CN112153705A - Communication method and device - Google Patents
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Abstract
The application relates to a communication method and equipment, which can be applied to vehicle networking, such as V2X, LTE-V, V2V and the like. A first terminal device sends a first signaling to at least one second terminal device, wherein the first signaling is used for indicating time domain information and/or frequency domain information of reserved resources, the time domain information is used for indicating the time length occupied by the reserved resources, and the frequency domain information is used for indicating the frequency domain bandwidth of the reserved resources; and the first terminal equipment sends first service data or control information on the reserved resources. If other information is scheduled at present, the reserved resource can be the same as the period or size of the resource occupied by the currently scheduled information, or can be different from the period or size of the resource occupied by the currently scheduled information, and as long as the information of the reserved resource is indicated through the first signaling, the second terminal device can acquire the position of the reserved resource, so that the flexibility of resource reservation is improved.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a communication method and device.
Background
The resource allocation of V2X has two modes: mode three (mode 3) and mode four (mode 4).
Mode three is a centralized control method. In the third mode, resources are allocated by a central control device (e.g., a base station or a relay station), and the resources are allocated to a terminal device serving as a signal transmitting end in a scheduling manner. Unlike the mode i in which the base station schedules resources only once, in the mode iii, the resources scheduled by the base station can also be used for multiple times by the terminal device serving as the signal sending end, which is similar to the semi-persistent scheduling (SPS) mode. The centralized control type resource allocation is mainly aimed at the network coverage scene.
And the fourth mode is a distributed resource multiplexing method based on competition, and the terminal equipment serving as a signal sending end obtains sending resources from a resource pool in a competition mode. In a network coverage scenario, the resource pool is a whole resource separated by the base station, and each terminal device competes for a small resource in the whole resource. In a scenario without network coverage, the resource pool is a predefined system bandwidth that can be obtained by the terminal device, and each terminal device competes for resources under the predefined system bandwidth. In the fourth mode, the terminal device serving as the signal sender needs to listen (sending) to resources before sending, so as to identify which resources are already occupied and which resources are available.
When the terminal device sends data, the sent data may be periodic data, and the terminal device needs to select resources each time the data is sent, which increases the complexity of operation because the selection frequency is high.
Disclosure of Invention
The embodiment of the application provides a communication method and equipment, which are used for improving the flexibility of a reservation mechanism.
In a first aspect, a first communication method is provided, the method including: a first terminal device sends a first signaling to at least one second terminal device, wherein the first signaling is used for indicating time domain information and/or frequency domain information of reserved resources, the time domain information is used for indicating the time length occupied by the reserved resources, and the frequency domain information is used for indicating the frequency domain bandwidth of the reserved resources; and the first terminal equipment sends first service data or control information on the reserved resources.
The method may be performed by a first communication device, which may be a communication apparatus or a communication device, such as a system-on-a-chip, capable of supporting the communication apparatus to implement the functionality required for the method. Illustratively, the first communication device is a first terminal device. Illustratively, the first terminal device is a first terminal device, or a chip system provided in the first terminal device for implementing the function of the terminal device, or another component for implementing the function of the first terminal device.
In the embodiment of the present application, the first terminal device may indicate, by sending the first signaling, time domain information and/or frequency domain information of the reserved resource, and the second terminal device at the receiving end may obtain the information of the reserved resource, so that the first service data or the control information may be received at a correct position through the reserved resource, and the resource is directly reserved without the first terminal device selecting the resource in each period, which reduces complexity of operation and power consumption of the terminal device due to resource selection. By the method provided by the embodiment of the application, if other information is scheduled at present, the reserved resource can be the same as or different from the period or size of the resource occupied by the currently scheduled information, and as long as the information of the reserved resource is indicated by the first signaling, the second terminal device can acquire the position of the reserved resource, so that the flexibility of resource reservation is improved.
With reference to the first aspect, in a possible implementation manner of the first aspect, the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resources, and includes: the state of the first field included in the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resources.
This is an explicit indication, which is more explicit. The first field may be a field added in the first signaling, dedicated to information indicating reserved resources. Alternatively, the first field may be an existing field in the first signaling, which is equivalent to multiplexing the existing field in the first signaling to indicate the information of the reserved resources.
With reference to the first aspect, in a possible implementation manner of the first aspect, the first signaling is further configured to indicate one or any combination of the following information:
a channel corresponding to the reserved resource;
the reserved resources are for multiple transmissions of one transport block;
the reserved resource is for a single transmission of a plurality of transport blocks;
the reserved resources are used for data initial transmission or data retransmission; or, the reserved resource is used for multicast service, broadcast service or unicast service.
The first signalling may also indicate one or more of the above information, so that the content indicated by the first signalling is richer.
With reference to the first aspect, in a possible implementation manner of the first aspect, the time domain information is further used to indicate:
a time domain offset, which is a time interval from a time point of transmitting the first signaling to a starting time point of the reserved resource.
The time domain offset may enable the second terminal device to explicitly determine the time domain position of the reserved resource.
With reference to the first aspect, in a possible implementation manner of the first aspect, the time domain information is further used to indicate:
a resource reservation period, wherein the reserved resources are repeated in a time domain at intervals of the resource reservation period; and/or reserving the number of times, wherein the reserved number of times is the number of times that the reserved resources are repeated on the time domain at intervals of the resource reservation period.
There is no limitation on the content included in the time domain information.
With reference to the first aspect, in a possible implementation manner of the first aspect, the first signaling does not include scheduling information of service data.
The first signaling may be used only for reserving resources, i.e. only for information indicating reserved resources, and not for scheduling other traffic data.
With reference to the first aspect, in a possible implementation manner of the first aspect, the first signaling is further configured to schedule second service data; the time domain information and/or the frequency domain information of the reserved resources include one or any combination of the following items:
the reserved resource has frequency hopping or does not have frequency hopping relative to the resource occupied by the second service data;
The position of the reserved resource has an offset relative to the position of the resource occupied by the second service data, or has no offset; or, the size of the reserved resource has a scaling factor relative to the size of the resource occupied by the second service data, or has no change.
The first signaling may also be used to schedule the second service data, which is equivalent to that the first signaling may be used to reserve resources and may also be used to schedule the second service data, and the utilization rate of the first signaling is higher. If the first signaling is also used for scheduling the second service data, the first signaling may indicate information of resources occupied by the second service data, in which case the first signaling does not need to directly indicate information of reserved resources any more, but can indicate information of reserved resources by indicating a relationship between resources occupied by the second service data and reserved resources.
With reference to the first aspect, in a possible implementation manner of the first aspect, a relative time domain position of the reserved resource is the same as a relative time domain position of a first resource, a frequency domain position of the reserved resource is the same as a frequency domain position of the first resource, and sizes of the reserved resource and the first resource are the same; or, the relative time domain position of the reserved resource has a first deviation from the relative time domain position of the first resource, and/or the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource; the reserved resource and the first resource have the same size;
Wherein the first resource is a resource occupied by the second service data, the relative time domain position of the first resource is a relative position of the time domain position of the first resource in a time unit, and the relative time domain position of the second resource is a relative position of the time domain position of the second resource in the time unit.
The relative positions of the reserved resources and the first resources are the same and the size of the reserved resources and the first resources is the same, and the second terminal equipment only needs to detect the resources with the same size at the same frequency domain position, so that the difficulty of detection of the second terminal equipment can be reduced. Or, for example, in the time unit where the reserved resource is located, the position completely the same as the relative position of the reserved resource is occupied by other resources, so that the relative time domain position and/or frequency domain position of the reserved resource may have a certain offset with respect to the first resource, which may not only complete resource reservation, but also have an association relationship between the reserved resource and the first resource, so that the second terminal device may determine the position of the reserved resource.
With reference to the first aspect, in a possible implementation manner of the first aspect, the first signaling further carries third information, where the third information is an MCS of the first service data, or the third information is a difference between the MCS of the second service data and the MCS of the first service data.
If the first traffic data and the second traffic data are different in size and transmitted using the same-sized resource, it may be considered to adjust the MCS of the first traffic data to be suitable for the resource.
With reference to the first aspect, in a possible implementation manner of the first aspect, the first signaling further carries fourth information, and the fourth information is the scaling factor.
If the size of the reserved resource has a scaling factor relative to the size of the resource occupied by the second service data, the first signaling can carry the scaling factor, so that the second terminal device can determine the size of the reserved resource according to the first signaling.
With reference to the first aspect, in a possible implementation manner of the first aspect, the second service data is sent through a second resource; the reserved resource is selected from a second resource, and a third position of the second resource has an association relation with a first position of the reserved resource, wherein the first position is a position of the reserved resource in a resource pool, and the third position is a position of the second resource in the resource pool.
The second service data occupies the second resource, which is scheduled in the first signaling, and the other terminal devices can avoid the second resource by monitoring the first signaling. Then, the position of the reserved resource is also located in the position of the second resource (the third resource is a resource whose relative position in the resource pool is the same as the relative position of the second resource in the resource pool), so that the probability of resource conflict can be reduced, and the selection range of the reserved resource is increased to some extent, which is more flexible. For the second terminal device, the first information can be detected in the third resource, and the range of detection is smaller.
With reference to the first aspect, in a possible implementation manner of the first aspect, the time domain information is used to indicate a length of time occupied by the reserved resource, and specifically:
the time domain information includes a time domain starting position and a time length of the reserved resource, or includes a time domain starting position and a time domain ending position of the reserved resource.
For example, the time domain information may further include a time domain end position and a time length of the reserved resource, and the like. The duration may be expressed as a specific duration, e.g., in milliseconds, or may also be expressed as a number of symbols or a number of slots, etc.
With reference to the first aspect, in a possible implementation manner of the first aspect, the frequency domain information is used to indicate a frequency domain bandwidth of the reserved resource, and specifically:
the frequency domain information includes a frequency domain starting position and a frequency domain bandwidth of the reserved resource, or includes a frequency domain starting position and an end position of the reserved resource.
For example, the time domain information may further include a time domain end position and a time length of the reserved resource, and the like.
With reference to the first aspect, in a possible implementation manner of the first aspect, the first signaling is SCI, system message, RRC signaling, or MAC signaling.
The embodiment of the present application does not limit the type of the first signaling.
In a second aspect, a second communication method is provided, the method comprising: the first terminal equipment determines parameters of a first signaling according to the reserved resources; the first terminal device sends a first signaling to at least one second terminal device, wherein the first signaling meets the parameters of the first signaling, the parameters of the first signaling are used for indicating time domain information and/or frequency domain information of the reserved resources, the time domain information is used for indicating the time length occupied by the reserved resources, and the frequency domain information is used for indicating the frequency domain bandwidth of the reserved resources; and the first terminal equipment sends first service data or control information on the reserved resources.
The method may be performed by a first communication device, which may be a communication apparatus or a communication device, such as a system-on-a-chip, capable of supporting the communication apparatus to implement the functionality required for the method. Illustratively, the first communication device is a first terminal device. Illustratively, the first terminal device is a first terminal device, or a chip system provided in the first terminal device for implementing the function of the first terminal device, or another component for implementing the function of the first terminal device.
With reference to the second aspect, in a possible implementation manner of the second aspect, the parameter of the first signaling is further used to indicate one or any combination of the following information:
a channel corresponding to the reserved resource;
the reserved resources are for multiple transmissions of one transport block;
the reserved resource is for a single transmission of a plurality of transport blocks;
the reserved resources are used for data initial transmission or data retransmission; or, the reserved resource is used for multicast service, broadcast service or unicast service.
With reference to the second aspect, in a possible implementation manner of the second aspect, in a possible implementation manner, the time domain information is further used to indicate:
a time domain offset, which is a time interval from a time point of transmitting the first signaling to a starting time point of the reserved resource.
The time domain offset may enable the second terminal device to explicitly determine the time domain position of the reserved resource.
With reference to the second aspect, in a possible implementation manner of the second aspect, the time domain information is further used to indicate:
a resource reservation period, wherein the reserved resources are repeated in a time domain at intervals of the resource reservation period; and/or reserving the number of times, wherein the reserved number of times is the number of times that the reserved resources are repeated on the time domain at intervals of the resource reservation period.
With reference to the second aspect, in a possible implementation manner of the second aspect, the first signaling does not include scheduling information of service data.
With reference to the second aspect, in a possible implementation manner of the second aspect, the first signaling is further configured to schedule second service data; the time domain information and/or the frequency domain information of the reserved resources include one or any combination of the following items:
the reserved resource has frequency hopping or does not have frequency hopping relative to the resource occupied by the second service data;
the position of the reserved resource has an offset relative to the position of the resource occupied by the second service data, or has no offset; or, the size of the reserved resource has a scaling factor relative to the size of the resource occupied by the second service data, or has no change.
With reference to the second aspect, in a possible implementation manner of the second aspect, the relative time domain position of the reserved resource is the same as the relative time domain position of the first resource, the frequency domain position of the reserved resource is the same as the frequency domain position of the first resource, and the size of the reserved resource is the same as the size of the first resource; or, the relative time domain position of the reserved resource has a first deviation from the relative time domain position of the first resource, and/or the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource; the reserved resource and the first resource have the same size;
Wherein the first resource is a resource occupied by the second service data, the relative time domain position of the first resource is a relative position of the time domain position of the first resource in a time unit, and the relative time domain position of the second resource is a relative position of the time domain position of the second resource in the time unit.
With reference to the second aspect, in a possible implementation manner of the second aspect, the first signaling further carries third information, where the third information is an MCS of the first service data, or the third information is a difference between the MCS of the second service data and the MCS of the first service data.
With reference to the second aspect, in a possible implementation manner of the second aspect, the first signaling further carries fourth information, and the fourth information is the scaling factor.
With reference to the second aspect, in a possible implementation manner of the second aspect, the second service data is sent through a second resource; the reserved resource is selected from a second resource, and a third position of the second resource has an association relation with a first position of the reserved resource, wherein the first position is a position of the reserved resource in a resource pool, and the third position is a position of the second resource in the resource pool.
With reference to the second aspect, in a possible implementation manner of the second aspect, the time domain information is used to indicate a length of time occupied by the reserved resource, and specifically is:
the time domain information includes a time domain starting position and a time length of the reserved resource, or includes a time domain starting position and a time domain ending position of the reserved resource.
With reference to the second aspect, in a possible implementation manner of the second aspect, the frequency domain information is used to indicate a frequency domain bandwidth of the reserved resource, and specifically:
the frequency domain information includes a frequency domain starting position and a frequency domain bandwidth of the reserved resource, or includes a frequency domain starting position and an end position of the reserved resource.
With reference to the second aspect, in a possible implementation manner of the second aspect, the first signaling is SCI, system message, RRC signaling, or MAC signaling.
With regard to the technical effects of the second aspect or of various possible embodiments of the second aspect, reference may be made to the introduction to the technical effects of the respective embodiments of the first aspect or of the first aspect.
In a third aspect, a third method of communication is provided, the method comprising: the second terminal equipment receives a first signaling from the first terminal equipment, wherein the first signaling is used for indicating time domain information and/or frequency domain information of reserved resources, the time domain information comprises the time length occupied by the reserved resources, and the frequency domain information is used for indicating the frequency domain bandwidth of the reserved resources; and the second terminal equipment receives the first service data or the control information from the first terminal equipment on the reserved resources.
The method may be performed by a second communication device, which may be a communication apparatus or a communication device capable of supporting a communication apparatus to implement the functions required by the method, such as a system-on-a-chip. Illustratively, the second communication device is a second terminal device. The second terminal device is, for example, a second terminal device, or a chip system provided in the second terminal device for implementing a function of the second terminal device, or another component for implementing the function of the second terminal device.
With reference to the third aspect, in a possible implementation manner of the third aspect, the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resources, and includes:
the state of the first field included in the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resources.
With reference to the third aspect, in a possible implementation manner of the third aspect, the first signaling is further used to indicate one or any combination of the following information:
a channel corresponding to the reserved resource;
the reserved resources are for multiple transmissions of one transport block;
The reserved resource is for a single transmission of a plurality of transport blocks;
the reserved resources are used for data initial transmission or data retransmission; or, the reserved resource is used for multicast service, broadcast service or unicast service.
With reference to the third aspect, in a possible implementation manner of the third aspect, the time domain information is further used to indicate:
a time domain offset, which is a time interval from a time point of transmitting the first signaling to a starting time point of the reserved resource.
With reference to the third aspect, in a possible implementation manner of the third aspect, the time domain information is further used to indicate:
a resource reservation period, wherein the reserved resources are repeated in a time domain at intervals of the resource reservation period; and/or reserving the number of times, wherein the reserved number of times is the number of times that the reserved resources are repeated on the time domain at intervals of the resource reservation period.
With reference to the third aspect, in a possible implementation manner of the third aspect, the first signaling does not include scheduling information of service data.
With reference to the third aspect, in a possible implementation manner of the third aspect, the first signaling is further configured to schedule second service data; the time domain information and/or the frequency domain information of the reserved resources include one or any combination of the following items:
The reserved resource has frequency hopping or does not have frequency hopping relative to the resource occupied by the second service data;
the position of the reserved resource has an offset relative to the position of the resource occupied by the second service data, or has no offset; or, the size of the reserved resource has a scaling factor relative to the size of the resource occupied by the second service data, or has no change.
With reference to the third aspect, in a possible implementation manner of the third aspect, a relative time domain position of the reserved resource is the same as a relative time domain position of a first resource, a frequency domain position of the reserved resource is the same as a frequency domain position of the first resource, and sizes of the reserved resource and the first resource are the same; or, the relative time domain position of the reserved resource has a first deviation from the relative time domain position of the first resource, and/or the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource; the reserved resource and the first resource have the same size;
wherein the first resource is a resource occupied by the second service data, the relative time domain position of the first resource is a relative position of the time domain position of the first resource in a time unit, and the relative time domain position of the second resource is a relative position of the time domain position of the second resource in the time unit.
With reference to the third aspect, in a possible implementation manner of the third aspect, the first signaling further carries third information, where the third information is an MCS of the first service data, or the third information is a difference between the MCS of the second service data and the MCS of the first service data.
With reference to the third aspect, in a possible implementation manner of the third aspect, the first signaling further carries fourth information, and the fourth information is the scaling factor.
With reference to the third aspect, in a possible implementation manner of the third aspect, the second service data is sent through a second resource; the reserved resource is selected from a second resource, and a third position of the second resource has an association relation with a first position of the reserved resource, wherein the first position is a position of the reserved resource in a resource pool, and the third position is a position of the second resource in the resource pool.
With reference to the third aspect, in a possible implementation manner of the third aspect, the time domain information is used to indicate a length of time occupied by the reserved resource, and specifically:
the time domain information includes a time domain starting position and a time length of the reserved resource, or includes a time domain starting position and a time domain ending position of the reserved resource.
For example, the time domain information may further include a time domain end position and a time length of the reserved resource, and the like.
With reference to the third aspect, in a possible implementation manner of the third aspect, the frequency domain information is used to indicate a frequency domain bandwidth of the reserved resource, and specifically includes:
the frequency domain information includes a frequency domain starting position and a frequency domain bandwidth of the reserved resource, or includes a frequency domain starting position and an end position of the reserved resource.
For example, the time domain information may further include a time domain end position and a time length of the reserved resource, and the like.
With reference to the third aspect, in a possible implementation manner of the third aspect, the first signaling is SCI, system message, RRC signaling, or MAC signaling.
With regard to the technical effects of the third aspect or of various possible embodiments of the third aspect, reference may be made to the introduction of the technical effects of the respective embodiments of the first aspect or of the first aspect.
In a fourth aspect, a fourth communication method is provided, the method comprising: the second terminal equipment receives first signaling from the first terminal equipment, and the parameters of the first signaling comprise at least one of the following parameters: the resource of the first signaling is borne, the size of the first signaling, or the RNTI of the CRC for scrambling the first signaling, the parameter of the first signaling is used to indicate the time domain information and/or the frequency domain information of the reserved resource, the time domain information is used to indicate the time length occupied by the reserved resource, and the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource; and the second terminal equipment receives the first service data or the control information from the first terminal equipment on the reserved resources.
The method may be performed by a second communication device, which may be a communication apparatus or a communication device capable of supporting a communication apparatus to implement the functions required by the method, such as a system-on-a-chip. Illustratively, the second communication device is a second terminal device. The second terminal device is, for example, a second terminal device, or a chip system provided in the second terminal device for implementing a function of the second terminal device, or another component for implementing the function of the second terminal device.
With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the parameter of the first signaling is further used to indicate one or any combination of the following information:
a channel corresponding to the reserved resource;
the reserved resources are for multiple transmissions of one transport block;
the reserved resource is for a single transmission of a plurality of transport blocks;
the reserved resources are used for data initial transmission or data retransmission; or, the reserved resource is used for multicast service, broadcast service or unicast service.
With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, in a possible implementation manner, the time domain information is further used to indicate:
A time domain offset, which is a time interval from a time point of transmitting the first signaling to a starting time point of the reserved resource.
The time domain offset may enable the second terminal device to explicitly determine the time domain position of the reserved resource.
With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the time domain information is further used to indicate:
a resource reservation period, wherein the reserved resources are repeated in a time domain at intervals of the resource reservation period; and/or reserving the number of times, wherein the reserved number of times is the number of times that the reserved resources are repeated on the time domain at intervals of the resource reservation period.
With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the first signaling does not include scheduling information of service data.
With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the first signaling is further used to schedule second service data; the time domain information and/or the frequency domain information of the reserved resources include one or any combination of the following items:
the reserved resource has frequency hopping or does not have frequency hopping relative to the resource occupied by the second service data;
The position of the reserved resource has an offset relative to the position of the resource occupied by the second service data, or has no offset; or, the size of the reserved resource has a scaling factor relative to the size of the resource occupied by the second service data, or has no change.
With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, a relative time domain position of the reserved resource is the same as a relative time domain position of a first resource, a frequency domain position of the reserved resource is the same as a frequency domain position of the first resource, and sizes of the reserved resource and the first resource are the same; or, the relative time domain position of the reserved resource has a first deviation from the relative time domain position of the first resource, and/or the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource; the reserved resource and the first resource have the same size;
wherein the first resource is a resource occupied by the second service data, the relative time domain position of the first resource is a relative position of the time domain position of the first resource in a time unit, and the relative time domain position of the second resource is a relative position of the time domain position of the second resource in the time unit.
With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the first signaling further carries third information, where the third information is an MCS of the first service data, or the third information is a difference between the MCS of the second service data and the MCS of the first service data.
With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the first signaling further carries fourth information, and the fourth information is the scaling factor.
With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the second service data is sent through a second resource; the reserved resource is selected from a second resource, and a third position of the second resource has an association relation with a first position of the reserved resource, wherein the first position is a position of the reserved resource in a resource pool, and the third position is a position of the second resource in the resource pool.
With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the time domain information is used to indicate a time length occupied by the reserved resource, and specifically is:
the time domain information includes a time domain starting position and a time length of the reserved resource, or includes a time domain starting position and a time domain ending position of the reserved resource.
With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the frequency domain information is used to indicate a frequency domain bandwidth of the reserved resource, and specifically is:
the frequency domain information includes a frequency domain starting position and a frequency domain bandwidth of the reserved resource, or includes a frequency domain starting position and an end position of the reserved resource.
With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the first signaling is SCI, system message, RRC signaling, or MAC signaling.
With regard to the technical effects of the fourth aspect or of various possible embodiments of the fourth aspect, reference may be made to the introduction to the technical effects of the second aspect or of the respective embodiments of the second aspect.
In a fifth aspect, a fifth communication method is provided, the method comprising: a first terminal device sends first service data at a first resource, wherein the first service data comprises M data blocks; the first terminal equipment receives positive acknowledgements aiming at N data blocks in the M data blocks or does not receive negative acknowledgements aiming at the N data blocks in the M data blocks, wherein M and N are positive integers, and M is larger than or equal to N; and the first terminal equipment releases third resources, wherein the third resources are resources reserved for the N data blocks, and the third resources do not include resource parts corresponding to the N data blocks in the first resources.
The method may be performed by a third communication device, which may be a communication apparatus or a communication device capable of supporting a communication apparatus to implement the functions required by the method, such as a system-on-chip. Illustratively, the third communication device is a first terminal device. Illustratively, the third terminal device is the first terminal device, or a chip system provided in the first terminal device for implementing the function of the first terminal device, or another component for implementing the function of the first terminal device.
In the embodiment of the present application, after the first terminal device sends the service data, if the ACK is received, which indicates that the sent service data has been successfully received by the receiving party, the first terminal device does not need to continue to send the service data through the reserved resources, so that the first terminal device can timely release the reserved resources, thereby reducing the waste of resources. And the reserved resources can be continuously utilized by other terminal equipment, so that the effective utilization rate of the resources is improved.
With reference to the fifth aspect, in one possible implementation manner of the fifth aspect, the method further includes: the first terminal device sends M-N data blocks on second resources, wherein the M-N data blocks are the data blocks remaining in the M data blocks except the N data blocks, the second resources are resources reserved for the M-N data blocks, and the second resources do not include the corresponding resource parts of the M data blocks in the first resources.
With reference to the fifth aspect, in a possible implementation manner of the fifth aspect, the third resource has an association relationship with the N acknowledgements.
For example, the third resource has an association relationship with N ACKs, and the first terminal device may determine the corresponding third resource after receiving N ACKs. And after the second terminal device receives the N ACKs, the corresponding third resource may also be determined.
With reference to the fifth aspect, in a possible implementation manner of the fifth aspect, the associating relationship between the third resource and the N acknowledgements includes:
the third resource has an association relationship with a fourth resource for carrying the N acknowledgements.
For the second terminal device, the ACK is received through the fourth resource, and then after the second terminal device receives N ACKs, the corresponding third resource may be determined according to the fourth resource, which provides a way for the second terminal device to determine the third resource.
With reference to the fifth aspect, in one possible implementation manner of the fifth aspect, the method further includes: the first terminal device receives M-N negative acknowledgements for the M-N data blocks.
The third terminal device may be a successful reception for the M-N data blocks, so the third terminal device may send M-N NACKs to the first terminal device. In addition, the second terminal device may also receive M-N NACKs, so that the second terminal device may determine that resources corresponding to the M-N data blocks are unavailable.
With reference to the fifth aspect, in a possible implementation manner of the fifth aspect, the first service data corresponds to one transport block, the transport block includes the M data blocks, the M data blocks are M code blocks or M code block groups, and one acknowledgement or negative acknowledgement corresponds to one code block or one code block group.
With reference to the fifth aspect, in a possible implementation manner of the fifth aspect, the first service data corresponds to M transport blocks, the M transport blocks are the M data blocks, and one acknowledgement or negative acknowledgement corresponds to one transport block.
The first service data may be only one transport block, or may also be multiple transport blocks, which is not limited specifically.
In a sixth aspect, a sixth communication method is provided, the method comprising: the second terminal device receives N positive acknowledgements from a third terminal device, wherein the N positive acknowledgements correspond to N data blocks in first service data received by the third terminal device from the first terminal device, and N is a positive integer; the second terminal device determines that the third resource having an association relationship with the N acknowledgements is an available resource.
The method may be performed by a fourth communication device, which may be a communication apparatus or a communication device capable of supporting a communication apparatus to implement the functions required by the method, such as a system-on-chip. Illustratively, the fourth communication device is a second terminal device. Illustratively, the fourth terminal device is the second terminal device, or a chip system provided in the second terminal device for implementing the function of the second terminal device, or another component for implementing the function of the second terminal device.
With reference to the sixth aspect, in a possible implementation manner of the sixth aspect, the third resources are resources reserved for the N data blocks.
With reference to the sixth aspect, in one possible implementation of the sixth aspect, the method further includes:
and the second terminal equipment occupies the third resource to send second service data.
With reference to the sixth aspect, in a possible implementation manner of the sixth aspect, the determining, by the second terminal device, that a third resource having an association relationship with the N acknowledgements is an available resource includes:
the second terminal device determines that the third resource having an association relation with fourth resources corresponding to the N positive acknowledgements is an available resource, and the fourth resource is a resource carrying the N positive acknowledgements.
With reference to the sixth aspect, in a possible implementation manner of the sixth aspect, the first service data corresponds to a transport block, the transport block includes M code blocks or code block groups, an acknowledgement or a negative acknowledgement corresponds to one code block or code block group, the N data blocks are N code blocks included in the M code blocks, or the N data blocks are N code block groups included in the M code block groups, and M is greater than N.
With reference to the sixth aspect, in a possible implementation manner of the sixth aspect, the first service data corresponds to M transport blocks, the N data blocks are N transport blocks included in the M transport blocks, and one acknowledgement or negative acknowledgement corresponds to one transport block.
With regard to the technical effects of the sixth aspect or of the various possible embodiments of the sixth aspect, reference may be made to the introduction to the technical effects of the respective embodiments of the fifth aspect or of the fifth aspect.
A seventh aspect provides a communication device, for example, the communication device is the first terminal device as described above. The first terminal device is configured to perform the method of the first aspect or any possible implementation manner of the first aspect. In particular, the first terminal device may comprise means for performing the method of the first aspect or any possible implementation manner of the first aspect, for example, the means for processing and the means for transceiving. Illustratively, the first terminal device is a communication apparatus. Illustratively, the communication device is a first terminal device. The transceiver module is configured to send a first signaling to at least one second terminal device, where the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resource, the time domain information is used to indicate a time length occupied by the reserved resource, and the frequency domain information is used to indicate a frequency domain bandwidth of the reserved resource;
The transceiver module is further configured to send first service data or control information on the reserved resource.
With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the processing module is configured to determine reserved resources.
With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resources, and includes: the state of the first field included in the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resources.
With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the first signaling is further used to indicate one or any combination of the following information:
a channel corresponding to the reserved resource;
the reserved resources are for multiple transmissions of one transport block;
the reserved resource is for a single transmission of a plurality of transport blocks;
the reserved resources are used for data initial transmission or data retransmission; or, the reserved resource is used for multicast service, broadcast service or unicast service.
With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the time domain information is further used to indicate:
A time domain offset, which is a time interval from a time point of transmitting the first signaling to a starting time point of the reserved resource.
With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the time domain information is further used to indicate:
a resource reservation period, wherein the reserved resources are repeated in a time domain at intervals of the resource reservation period; and/or reserving the number of times, wherein the reserved number of times is the number of times that the reserved resources are repeated on the time domain at intervals of the resource reservation period.
With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the first signaling does not include scheduling information of traffic data.
The first signaling may be used only for reserving resources, i.e. only for information indicating reserved resources, and not for scheduling other traffic data.
With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the first signaling is further used to schedule second service data; the time domain information and/or the frequency domain information of the reserved resources include one or any combination of the following items:
the reserved resource has frequency hopping or does not have frequency hopping relative to the resource occupied by the second service data;
The position of the reserved resource has an offset relative to the position of the resource occupied by the second service data, or has no offset; or, the size of the reserved resource has a scaling factor relative to the size of the resource occupied by the second service data, or has no change.
With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, a relative time domain position of the reserved resource is the same as a relative time domain position of a first resource, a frequency domain position of the reserved resource is the same as a frequency domain position of the first resource, and sizes of the reserved resource and the first resource are the same; or, the relative time domain position of the reserved resource has a first deviation from the relative time domain position of the first resource, and/or the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource; the reserved resource and the first resource have the same size;
wherein the first resource is a resource occupied by the second service data, the relative time domain position of the first resource is a relative position of the time domain position of the first resource in a time unit, and the relative time domain position of the second resource is a relative position of the time domain position of the second resource in the time unit.
With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the first signaling further carries third information, where the third information is an MCS of the first service data, or the third information is a difference between the MCS of the second service data and the MCS of the first service data.
With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the first signaling further carries fourth information, and the fourth information is the scaling factor.
With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the second service data is sent through a second resource; the reserved resource is selected from a second resource, and a third position of the second resource has an association relation with a first position of the reserved resource, wherein the first position is a position of the reserved resource in a resource pool, and the third position is a position of the second resource in the resource pool.
With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the time domain information is used to indicate a length of time occupied by the reserved resource, and specifically includes:
the time domain information includes a time domain starting position and a time length of the reserved resource, or includes a time domain starting position and a time domain ending position of the reserved resource.
For example, the time domain information may further include a time domain end position and a time length of the reserved resource, and the like.
With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the frequency domain information is used to indicate a frequency domain bandwidth of the reserved resource, and specifically includes:
the frequency domain information includes a frequency domain starting position and a frequency domain bandwidth of the reserved resource, or includes a frequency domain starting position and an end position of the reserved resource.
For example, the time domain information may further include a time domain end position and a time length of the reserved resource, and the like.
With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the first signaling is SCI, system message, RRC signaling, or MAC signaling.
With regard to technical effects of the seventh aspect or of various possible embodiments of the seventh aspect, reference may be made to the introduction to the first aspect or to the technical effects of the respective embodiments of the first aspect.
An eighth aspect provides a communication device, for example, the communication device is the first terminal device as described above. The first terminal device is configured to perform the method of the second aspect or any possible implementation manner of the second aspect. In particular, the first terminal device may comprise means for performing the method of the second aspect or any possible implementation manner of the second aspect, for example, a processing means and a transceiver means. Illustratively, the first terminal device is a communication apparatus. Illustratively, the communication device is a first terminal device. The processing module is configured to determine a parameter of a first signaling according to a reserved resource, where the parameter of the first signaling includes at least one of the following parameters: a resource for carrying the first signaling, a size of the first signaling, or an RNTI for scrambling CRC of the first signaling;
The transceiver module is configured to send a first signaling to at least one second terminal device, where a parameter of the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resource, the time domain information is used to indicate a time length occupied by the reserved resource, and the frequency domain information is used to indicate a frequency domain bandwidth of the reserved resource;
the transceiver module is further configured to send first service data or control information on the reserved resource.
With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, the parameter of the first signaling is further used to indicate one or any combination of the following information:
a channel corresponding to the reserved resource;
the reserved resources are for multiple transmissions of one transport block;
the reserved resource is for a single transmission of a plurality of transport blocks;
the reserved resources are used for data initial transmission or data retransmission; or, the reserved resource is used for multicast service, broadcast service or unicast service.
With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, in a possible implementation manner, the time domain information is further used to indicate:
A time domain offset, which is a time interval from a time point of transmitting the first signaling to a starting time point of the reserved resource.
The time domain offset may enable the second terminal device to explicitly determine the time domain position of the reserved resource.
With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, the time domain information is further used to indicate:
a resource reservation period, wherein the reserved resources are repeated in a time domain at intervals of the resource reservation period; and/or reserving the number of times, wherein the reserved number of times is the number of times that the reserved resources are repeated on the time domain at intervals of the resource reservation period.
With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, the first signaling does not include scheduling information of service data.
With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, the first signaling is further used to schedule second service data; the time domain information and/or the frequency domain information of the reserved resources include one or any combination of the following items:
the reserved resource has frequency hopping or does not have frequency hopping relative to the resource occupied by the second service data;
The position of the reserved resource has an offset relative to the position of the resource occupied by the second service data, or has no offset; or, the size of the reserved resource has a scaling factor relative to the size of the resource occupied by the second service data, or has no change.
With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, a relative time domain position of the reserved resource is the same as a relative time domain position of a first resource, a frequency domain position of the reserved resource is the same as a frequency domain position of the first resource, and the size of the reserved resource is the same as the size of the first resource; or, the relative time domain position of the reserved resource has a first deviation from the relative time domain position of the first resource, and/or the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource; the reserved resource and the first resource have the same size;
wherein the first resource is a resource occupied by the second service data, the relative time domain position of the first resource is a relative position of the time domain position of the first resource in a time unit, and the relative time domain position of the second resource is a relative position of the time domain position of the second resource in the time unit.
With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, the first signaling further carries third information, where the third information is an MCS of the first service data, or the third information is a difference between the MCS of the second service data and the MCS of the first service data.
With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, the first signaling further carries fourth information, and the fourth information is the scaling factor.
With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, the second service data is sent through a second resource; the reserved resource is selected from a second resource, and a third position of the second resource has an association relation with a first position of the reserved resource, wherein the first position is a position of the reserved resource in a resource pool, and the third position is a position of the second resource in the resource pool.
With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, the time domain information is used to indicate a time length occupied by the reserved resource, and specifically is:
the time domain information includes a time domain starting position and a time length of the reserved resource, or includes a time domain starting position and a time domain ending position of the reserved resource.
With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, the frequency domain information is used to indicate a frequency domain bandwidth of the reserved resource, and specifically is:
the frequency domain information includes a frequency domain starting position and a frequency domain bandwidth of the reserved resource, or includes a frequency domain starting position and an end position of the reserved resource.
With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, the first signaling is SCI, system message, RRC signaling, or MAC signaling.
With regard to the technical effects of the eighth aspect or of various possible embodiments of the eighth aspect, reference may be made to the introduction to the technical effects of the second aspect or of the respective embodiments of the second aspect.
A ninth aspect provides a communication device, for example, a second terminal device as described above. The first terminal device is configured to perform the method in the third aspect or any possible implementation manner of the third aspect. In particular, the first terminal device may include means for performing the method of the third aspect or any possible implementation manner of the third aspect, for example, the means includes a processing means and a transceiver means. Illustratively, the second terminal device is a communication apparatus. Illustratively, the communication device is a second terminal device. The transceiver module is configured to receive a first signaling from a first terminal device, where the first signaling is used to indicate time domain information and/or frequency domain information of a reserved resource, the time domain information includes a time length occupied by the reserved resource, and the frequency domain information is used to indicate a frequency domain bandwidth of the reserved resource;
The transceiver module is further configured to receive first service data or control information from the first terminal device on the reserved resource.
With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the processing module is configured to determine the reserved resource according to the first signaling.
With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resources, and includes:
the state of the first field included in the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resources.
With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the first signaling is further used to indicate one or any combination of the following information:
a channel corresponding to the reserved resource;
the reserved resources are for multiple transmissions of one transport block;
the reserved resource is for a single transmission of a plurality of transport blocks;
the reserved resources are used for data initial transmission or data retransmission; or, the reserved resource is used for multicast service, broadcast service or unicast service.
With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the time domain information is further used to indicate:
a time domain offset, which is a time interval from a time point of transmitting the first signaling to a starting time point of the reserved resource.
With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the time domain information is further used to indicate:
a resource reservation period, wherein the reserved resources are repeated in a time domain at intervals of the resource reservation period; and/or reserving the number of times, wherein the reserved number of times is the number of times that the reserved resources are repeated on the time domain at intervals of the resource reservation period.
With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the first signaling does not include scheduling information of service data.
With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the first signaling is further configured to schedule second service data; the time domain information and/or the frequency domain information of the reserved resources include one or any combination of the following items:
the reserved resource has frequency hopping or does not have frequency hopping relative to the resource occupied by the second service data;
The position of the reserved resource has an offset relative to the position of the resource occupied by the second service data, or has no offset; or, the size of the reserved resource has a scaling factor relative to the size of the resource occupied by the second service data, or has no change.
With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the relative time domain position of the reserved resource is the same as the relative time domain position of the first resource, the frequency domain position of the reserved resource is the same as the frequency domain position of the first resource, and the size of the reserved resource is the same as the size of the first resource; or, the relative time domain position of the reserved resource has a first deviation from the relative time domain position of the first resource, and/or the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource; the reserved resource and the first resource have the same size;
wherein the first resource is a resource occupied by the second service data, the relative time domain position of the first resource is a relative position of the time domain position of the first resource in a time unit, and the relative time domain position of the second resource is a relative position of the time domain position of the second resource in the time unit.
With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the first signaling further carries third information, where the third information is an MCS of the first service data, or the third information is a difference between the MCS of the second service data and the MCS of the first service data.
With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the first signaling further carries fourth information, and the fourth information is the scaling factor.
With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the second service data is sent through a second resource; the reserved resource is selected from a second resource, and a third position of the second resource has an association relation with a first position of the reserved resource, wherein the first position is a position of the reserved resource in a resource pool, and the third position is a position of the second resource in the resource pool.
With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the time domain information is used to indicate a time length occupied by the reserved resource, and specifically includes:
the time domain information includes a time domain starting position and a time length of the reserved resource, or includes a time domain starting position and a time domain ending position of the reserved resource.
For example, the time domain information may further include a time domain end position and a time length of the reserved resource, and the like.
With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the frequency domain information is used to indicate a frequency domain bandwidth of the reserved resource, and specifically is:
the frequency domain information includes a frequency domain starting position and a frequency domain bandwidth of the reserved resource, or includes a frequency domain starting position and an end position of the reserved resource.
For example, the time domain information may further include a time domain end position and a time length of the reserved resource, and the like.
With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the first signaling is SCI, system message, RRC signaling, or MAC signaling.
With regard to the technical effects of the various possible embodiments of the ninth aspect or the ninth aspect, reference may be made to the introduction to the technical effects of the respective embodiments of the third aspect or the third aspect.
A tenth aspect provides a communication apparatus, for example, the communication apparatus is the second terminal apparatus as described above. The first terminal device is configured to perform the method of the fourth aspect or any possible implementation manner of the fourth aspect. In particular, the first terminal device may comprise means for performing the method of the fourth aspect or any possible implementation manner of the fourth aspect, for example, the means for processing and the means for transceiving. Illustratively, the second terminal device is a communication apparatus. Illustratively, the communication device is a second terminal device. The transceiver module is configured to receive a first signaling from a first terminal device, where a parameter of the first signaling includes at least one of the following parameters: the resource of the first signaling is borne, the size of the first signaling, or the RNTI of the CRC for scrambling the first signaling, the parameter of the first signaling is used to indicate the time domain information and/or the frequency domain information of the reserved resource, the time domain information is used to indicate the time length occupied by the reserved resource, and the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource;
The transceiver module is further configured to receive first service data or control information from the first terminal device on the reserved resource.
With reference to the tenth aspect, in a possible implementation manner of the tenth aspect, the processing module is configured to determine the reserved resources according to a parameter of the first signaling.
With reference to the tenth aspect, in a possible implementation manner of the tenth aspect, the parameter of the first signaling is further used to indicate one or any combination of the following information:
a channel corresponding to the reserved resource;
the reserved resources are for multiple transmissions of one transport block;
the reserved resource is for a single transmission of a plurality of transport blocks;
the reserved resources are used for data initial transmission or data retransmission; or, the reserved resource is used for multicast service, broadcast service or unicast service.
With reference to the tenth aspect, in a possible implementation manner of the tenth aspect, in a possible implementation manner, the time domain information is further used to indicate:
a time domain offset, which is a time interval from a time point of transmitting the first signaling to a starting time point of the reserved resource.
The time domain offset may enable the second terminal device to explicitly determine the time domain position of the reserved resource.
With reference to the tenth aspect, in a possible implementation manner of the tenth aspect, the time domain information is further used to indicate:
a resource reservation period, wherein the reserved resources are repeated in a time domain at intervals of the resource reservation period; and/or reserving the number of times, wherein the reserved number of times is the number of times that the reserved resources are repeated on the time domain at intervals of the resource reservation period.
With reference to the tenth aspect, in a possible implementation manner of the tenth aspect, the first signaling does not include scheduling information of service data.
With reference to the tenth aspect, in a possible implementation manner of the tenth aspect, the first signaling is further used for scheduling second service data; the time domain information and/or the frequency domain information of the reserved resources include one or any combination of the following items:
the reserved resource has frequency hopping or does not have frequency hopping relative to the resource occupied by the second service data;
the position of the reserved resource has an offset relative to the position of the resource occupied by the second service data, or has no offset; or, the size of the reserved resource has a scaling factor relative to the size of the resource occupied by the second service data, or has no change.
With reference to the tenth aspect, in a possible implementation manner of the tenth aspect, a relative time domain position of the reserved resource is the same as a relative time domain position of a first resource, a frequency domain position of the reserved resource is the same as a frequency domain position of the first resource, and the size of the reserved resource is the same as the size of the first resource; or, the relative time domain position of the reserved resource has a first deviation from the relative time domain position of the first resource, and/or the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource; the reserved resource and the first resource have the same size;
wherein the first resource is a resource occupied by the second service data, the relative time domain position of the first resource is a relative position of the time domain position of the first resource in a time unit, and the relative time domain position of the second resource is a relative position of the time domain position of the second resource in the time unit.
With reference to the tenth aspect, in a possible implementation manner of the tenth aspect, the first signaling further carries third information, where the third information is an MCS of the first service data, or the third information is a difference between the MCS of the second service data and the MCS of the first service data.
With reference to the tenth aspect, in a possible implementation manner of the tenth aspect, the first signaling further carries fourth information, and the fourth information is the scaling factor.
With reference to the tenth aspect, in a possible implementation manner of the tenth aspect, the second service data is sent through a second resource; the reserved resource is selected from a second resource, and a third position of the second resource has an association relation with a first position of the reserved resource, wherein the first position is a position of the reserved resource in a resource pool, and the third position is a position of the second resource in the resource pool.
With reference to the tenth aspect, in a possible implementation manner of the tenth aspect, the time domain information is used to indicate a time length occupied by the reserved resource, and specifically is:
the time domain information includes a time domain starting position and a time length of the reserved resource, or includes a time domain starting position and a time domain ending position of the reserved resource.
With reference to the tenth aspect, in a possible implementation manner of the tenth aspect, the frequency domain information is used to indicate a frequency domain bandwidth of the reserved resource, and specifically is:
The frequency domain information includes a frequency domain starting position and a frequency domain bandwidth of the reserved resource, or includes a frequency domain starting position and an end position of the reserved resource.
With reference to the tenth aspect, in a possible implementation manner of the tenth aspect, the first signaling is SCI, system message, RRC signaling, or MAC signaling.
With regard to the technical effects of the tenth aspect or of various possible embodiments of the tenth aspect, reference may be made to the introduction to the technical effects of the respective embodiments of the fourth aspect or of the fourth aspect.
In an eleventh aspect, a communication device is provided, for example, the communication device is the first terminal device as described above. The first terminal device is configured to perform the method of the fifth aspect or any possible implementation manner of the fifth aspect. In particular, the first terminal device may comprise means for performing the method of the fifth aspect or any possible implementation manner of the fifth aspect, for example, the means for processing and the means for transceiving. Illustratively, the first terminal device is a communication apparatus. Illustratively, the communication device is a first terminal device. The transceiver module is configured to send first service data in a first resource, where the first service data includes M data blocks;
The transceiver module is further configured to receive positive acknowledgements for N data blocks of the M data blocks, or receive no negative acknowledgements for N data blocks of the M data blocks, where M and N are positive integers, and M is greater than or equal to N;
the processing module is configured to release a third resource, where the third resource is a resource reserved for the N data blocks, and the third resource does not include a resource portion corresponding to the N data blocks in the first resource.
With reference to the eleventh aspect, in a possible implementation manner of the eleventh aspect, the transceiver module is further configured to transmit M-N data blocks on second resources, where the M-N data blocks are data blocks remaining in the M data blocks except the N data blocks, the second resources are resources reserved for the M-N data blocks, and the second resources do not include resource portions corresponding to the M data blocks in the first resources.
With reference to the eleventh aspect, in a possible implementation manner of the eleventh aspect, the third resource has an association relationship with the N acknowledgements.
With reference to the eleventh aspect, in a possible implementation manner of the eleventh aspect, the associating relationship between the third resource and the N acknowledgements includes:
The third resource has an association relationship with a fourth resource for carrying the N acknowledgements.
With reference to the eleventh aspect, in a possible implementation manner of the eleventh aspect, the transceiver module is further configured to receive M-N negative acknowledgements for the M-N data blocks.
With reference to the eleventh aspect, in a possible implementation manner of the eleventh aspect, the first traffic data corresponds to one transport block, the transport block includes the M data blocks, the M data blocks are M code blocks or M code block groups, and one acknowledgement or negative acknowledgement corresponds to one code block or one code block group.
With reference to the eleventh aspect, in a possible implementation manner of the eleventh aspect, the first service data corresponds to M transport blocks, the M transport blocks are the M data blocks, and one acknowledgement or negative acknowledgement corresponds to one transport block.
With regard to the technical effects of the various possible embodiments of the eleventh aspect or of the eleventh aspect, reference may be made to the introduction to the technical effects of the respective embodiments of the fifth aspect or of the fifth aspect.
A twelfth aspect provides a communication device, for example, the communication device is the second terminal device as described above. The second terminal device is configured to perform the method of the sixth aspect or any possible implementation manner of the sixth aspect. In particular, the first terminal device may comprise means for performing the method of the sixth aspect or any possible implementation manner of the sixth aspect, for example, the means for processing and the means for transceiving. Illustratively, the second terminal device is a communication apparatus. Illustratively, the communication device is a second terminal device. The receiving and sending module is configured to receive N acknowledgements from a third terminal device, where the N acknowledgements correspond to N data blocks in first service data received by the third terminal device from a first terminal device, and N is a positive integer;
And the processing module is used for determining that the third resource which has the association relation with the N positive answers is available.
With reference to the twelfth aspect, in a possible implementation manner of the twelfth aspect, the third resource is a resource reserved for the N data blocks.
With reference to the twelfth aspect, in a possible implementation manner of the twelfth aspect, the processing module is further configured to occupy the third resource to send second service data.
With reference to the twelfth aspect, in a possible implementation manner of the twelfth aspect, the processing module is configured to determine that a third resource having an association relationship with the N acknowledgements is an available resource by:
determining that the third resource having an association relation with fourth resources corresponding to the N positive acknowledgements is an available resource, wherein the fourth resource is a resource carrying the N positive acknowledgements.
With reference to the twelfth aspect, in a possible implementation manner of the twelfth aspect, the first traffic data corresponds to a transport block, the transport block includes M code blocks or code block groups, one acknowledgement or negative acknowledgement corresponds to one code block or code block group, the N data blocks are N code blocks included in the M code blocks, or the N data blocks are N code block groups included in the M code block groups, and M is greater than N.
With reference to the twelfth aspect, in a possible implementation manner of the twelfth aspect, the first service data corresponds to M transport blocks, the N data blocks are N transport blocks included in the M transport blocks, and one acknowledgement or negative acknowledgement corresponds to one transport block.
With regard to the technical effects of the twelfth aspect or of the various possible embodiments of the twelfth aspect, reference may be made to the introduction to the technical effects of the respective embodiments of the sixth aspect or of the sixth aspect.
In a thirteenth aspect, a communication device is provided, for example, a first terminal device as described above. The communication device comprises a processor and a transceiver coupled to each other for implementing the method as described in the first aspect or in the various possible designs of the first aspect. Illustratively, the communication means is a chip provided in the communication device. Illustratively, the communication device is a first terminal device. Wherein, the transceiver is implemented by an antenna, a feeder, a codec, etc. in the communication device, for example, or, if the communication device is a chip disposed in the communication device, the transceiver is, for example, a communication interface in the chip, and the communication interface is connected with a radio frequency transceiving component in the communication device to implement transceiving of information by the radio frequency transceiving component. The transceiver is configured to send a first signaling to at least one second terminal device, where the first signaling is used to indicate time domain information and/or frequency domain information of a reserved resource, the time domain information is used to indicate a time length occupied by the reserved resource, and the frequency domain information is used to indicate a frequency domain bandwidth of the reserved resource;
The transceiver is further configured to transmit first service data or control information on the reserved resources.
With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the processor is configured to determine reserved resources.
With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resources, and includes: the state of the first field included in the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resources.
With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the first signaling is further used to indicate one or any combination of the following information:
a channel corresponding to the reserved resource;
the reserved resources are for multiple transmissions of one transport block;
the reserved resource is for a single transmission of a plurality of transport blocks;
the reserved resources are used for data initial transmission or data retransmission; or, the reserved resource is used for multicast service, broadcast service or unicast service.
With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the time domain information is further used to indicate:
A time domain offset, which is a time interval from a time point of transmitting the first signaling to a starting time point of the reserved resource.
With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the time domain information is further used to indicate:
a resource reservation period, wherein the reserved resources are repeated in a time domain at intervals of the resource reservation period; and/or reserving the number of times, wherein the reserved number of times is the number of times that the reserved resources are repeated on the time domain at intervals of the resource reservation period.
With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the first signaling does not include scheduling information of traffic data.
The first signaling may be used only for reserving resources, i.e. only for information indicating reserved resources, and not for scheduling other traffic data.
With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the first signaling is further used to schedule second traffic data; the time domain information and/or the frequency domain information of the reserved resources include one or any combination of the following items:
the reserved resource has frequency hopping or does not have frequency hopping relative to the resource occupied by the second service data;
The position of the reserved resource has an offset relative to the position of the resource occupied by the second service data, or has no offset; or, the size of the reserved resource has a scaling factor relative to the size of the resource occupied by the second service data, or has no change.
With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, a relative time domain position of the reserved resource is the same as a relative time domain position of a first resource, a frequency domain position of the reserved resource is the same as a frequency domain position of the first resource, and sizes of the reserved resource and the first resource are the same; or, the relative time domain position of the reserved resource has a first deviation from the relative time domain position of the first resource, and/or the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource; the reserved resource and the first resource have the same size;
wherein the first resource is a resource occupied by the second service data, the relative time domain position of the first resource is a relative position of the time domain position of the first resource in a time unit, and the relative time domain position of the second resource is a relative position of the time domain position of the second resource in the time unit.
With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the first signaling further carries third information, where the third information is an MCS of the first service data, or the third information is a difference between the MCS of the second service data and the MCS of the first service data.
With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the first signaling further carries fourth information, and the fourth information is the scaling factor.
With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the second service data is sent through a second resource; the reserved resource is selected from a second resource, and a third position of the second resource has an association relation with a first position of the reserved resource, wherein the first position is a position of the reserved resource in a resource pool, and the third position is a position of the second resource in the resource pool.
With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the time domain information is used to indicate a length of time occupied by the reserved resource, and specifically is:
The time domain information includes a time domain starting position and a time length of the reserved resource, or includes a time domain starting position and a time domain ending position of the reserved resource.
For example, the time domain information may further include a time domain end position and a time length of the reserved resource, and the like.
With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the frequency domain information is used to indicate a frequency domain bandwidth of the reserved resource, and specifically:
the frequency domain information includes a frequency domain starting position and a frequency domain bandwidth of the reserved resource, or includes a frequency domain starting position and an end position of the reserved resource.
For example, the time domain information may further include a time domain end position and a time length of the reserved resource, and the like.
With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the first signaling is SCI, system message, RRC signaling, or MAC signaling.
With regard to the technical effects of the various possible embodiments of the thirteenth aspect or the thirteenth aspect, reference may be made to the introduction to the technical effects of the respective embodiments of the first aspect or the first aspect.
In a fourteenth aspect, a communication device is provided, for example, the first terminal device as described above. The communication device comprises a processor and a transceiver coupled to each other for implementing the method as described in the second aspect or in the various possible designs of the second aspect. Illustratively, the communication means is a chip provided in the communication device. Illustratively, the communication device is a first terminal device. Wherein, the transceiver is implemented by an antenna, a feeder, a codec, etc. in the communication device, for example, or, if the communication device is a chip disposed in the communication device, the transceiver is, for example, a communication interface in the chip, and the communication interface is connected with a radio frequency transceiving component in the communication device to implement transceiving of information by the radio frequency transceiving component. Wherein the processor is configured to determine a parameter of a first signaling according to the reserved resource, and the parameter of the first signaling includes at least one of the following parameters: a resource for carrying the first signaling, a size of the first signaling, or an RNTI for scrambling CRC of the first signaling;
The transceiver is configured to send a first signaling to at least one second terminal device, where a parameter of the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resource, the time domain information is used to indicate a time length occupied by the reserved resource, and the frequency domain information is used to indicate a frequency domain bandwidth of the reserved resource;
the transceiver is further configured to transmit first service data or control information on the reserved resources.
With reference to the fourteenth aspect, in a possible implementation manner of the fourteenth aspect, the parameter of the first signaling is further used to indicate one or any combination of the following information:
a channel corresponding to the reserved resource;
the reserved resources are for multiple transmissions of one transport block;
the reserved resource is for a single transmission of a plurality of transport blocks;
the reserved resources are used for data initial transmission or data retransmission; or, the reserved resource is used for multicast service, broadcast service or unicast service.
With reference to the fourteenth aspect, in a possible implementation manner of the fourteenth aspect, in a possible implementation manner, the time domain information is further used to indicate:
A time domain offset, which is a time interval from a time point of transmitting the first signaling to a starting time point of the reserved resource.
The time domain offset may enable the second terminal device to explicitly determine the time domain position of the reserved resource.
With reference to the fourteenth aspect, in a possible implementation manner of the fourteenth aspect, the time domain information is further used to indicate:
a resource reservation period, wherein the reserved resources are repeated in a time domain at intervals of the resource reservation period; and/or reserving the number of times, wherein the reserved number of times is the number of times that the reserved resources are repeated on the time domain at intervals of the resource reservation period.
With reference to the fourteenth aspect, in a possible implementation manner of the fourteenth aspect, the first signaling does not include scheduling information of traffic data.
With reference to the fourteenth aspect, in a possible implementation manner of the fourteenth aspect, the first signaling is further used to schedule second traffic data; the time domain information and/or the frequency domain information of the reserved resources include one or any combination of the following items:
the reserved resource has frequency hopping or does not have frequency hopping relative to the resource occupied by the second service data;
The position of the reserved resource has an offset relative to the position of the resource occupied by the second service data, or has no offset; or, the size of the reserved resource has a scaling factor relative to the size of the resource occupied by the second service data, or has no change.
With reference to the fourteenth aspect, in a possible implementation manner of the fourteenth aspect, a relative time domain position of the reserved resource is the same as a relative time domain position of a first resource, a frequency domain position of the reserved resource is the same as a frequency domain position of the first resource, and sizes of the reserved resource and the first resource are the same; or, the relative time domain position of the reserved resource has a first deviation from the relative time domain position of the first resource, and/or the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource; the reserved resource and the first resource have the same size;
wherein the first resource is a resource occupied by the second service data, the relative time domain position of the first resource is a relative position of the time domain position of the first resource in a time unit, and the relative time domain position of the second resource is a relative position of the time domain position of the second resource in the time unit.
With reference to the fourteenth aspect, in a possible implementation manner of the fourteenth aspect, the first signaling further carries third information, where the third information is an MCS of the first service data, or the third information is a difference between the MCS of the second service data and the MCS of the first service data.
With reference to the fourteenth aspect, in a possible implementation manner of the fourteenth aspect, the first signaling further carries fourth information, and the fourth information is the scaling factor.
With reference to the fourteenth aspect, in a possible implementation manner of the fourteenth aspect, the second service data is sent through a second resource; the reserved resource is selected from a second resource, and a third position of the second resource has an association relation with a first position of the reserved resource, wherein the first position is a position of the reserved resource in a resource pool, and the third position is a position of the second resource in the resource pool.
With reference to the fourteenth aspect, in a possible implementation manner of the fourteenth aspect, the time domain information is used to indicate a length of time occupied by the reserved resource, and specifically is:
The time domain information includes a time domain starting position and a time length of the reserved resource, or includes a time domain starting position and a time domain ending position of the reserved resource.
With reference to the fourteenth aspect, in a possible implementation manner of the fourteenth aspect, the frequency domain information is used to indicate a frequency domain bandwidth of the reserved resource, and specifically is:
the frequency domain information includes a frequency domain starting position and a frequency domain bandwidth of the reserved resource, or includes a frequency domain starting position and an end position of the reserved resource.
With reference to the fourteenth aspect, in a possible implementation manner of the fourteenth aspect, the first signaling is SCI, system message, RRC signaling, or MAC signaling.
With regard to the technical effects of the various possible embodiments of the fourteenth aspect or the fourteenth aspect, reference may be made to the introduction to the technical effects of the respective embodiments of the second aspect or the second aspect.
A fifteenth aspect provides a communication device, such as the second terminal device as described above. The communication device comprises a processor and a transceiver coupled to each other for implementing the method as described in the third aspect or in various possible designs of the third aspect. Illustratively, the communication means is a chip provided in the communication device. Illustratively, the communication device is a second terminal device. Wherein, the transceiver is implemented by an antenna, a feeder, a codec, etc. in the communication device, for example, or, if the communication device is a chip disposed in the communication device, the transceiver is, for example, a communication interface in the chip, and the communication interface is connected with a radio frequency transceiving component in the communication device to implement transceiving of information by the radio frequency transceiving component. The transceiver is configured to receive a first signaling from a first terminal device, where the first signaling is used to indicate time domain information and/or frequency domain information of a reserved resource, the time domain information includes a time length occupied by the reserved resource, and the frequency domain information is used to indicate a frequency domain bandwidth of the reserved resource;
The transceiver is further configured to receive first traffic data or control information from the first terminal device on the reserved resources.
With reference to the fifteenth aspect, in a possible implementation manner of the fifteenth aspect, the processor is configured to determine the reserved resource according to the first signaling.
With reference to the fifteenth aspect, in a possible implementation manner of the fifteenth aspect, the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resources, and includes:
the state of the first field included in the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resources.
With reference to the fifteenth aspect, in a possible implementation manner of the fifteenth aspect, the first signaling is further used to indicate one or any combination of the following information:
a channel corresponding to the reserved resource;
the reserved resources are for multiple transmissions of one transport block;
the reserved resource is for a single transmission of a plurality of transport blocks;
the reserved resources are used for data initial transmission or data retransmission; or, the reserved resource is used for multicast service, broadcast service or unicast service.
With reference to the fifteenth aspect, in a possible implementation manner of the fifteenth aspect, the time domain information is further used to indicate:
a time domain offset, which is a time interval from a time point of transmitting the first signaling to a starting time point of the reserved resource.
With reference to the fifteenth aspect, in a possible implementation manner of the fifteenth aspect, the time domain information is further used to indicate:
a resource reservation period, wherein the reserved resources are repeated in a time domain at intervals of the resource reservation period; and/or reserving the number of times, wherein the reserved number of times is the number of times that the reserved resources are repeated on the time domain at intervals of the resource reservation period.
With reference to the fifteenth aspect, in a possible implementation manner of the fifteenth aspect, the first signaling does not include scheduling information of traffic data.
With reference to the fifteenth aspect, in a possible implementation manner of the fifteenth aspect, the first signaling is further used for scheduling second traffic data; the time domain information and/or the frequency domain information of the reserved resources include one or any combination of the following items:
the reserved resource has frequency hopping or does not have frequency hopping relative to the resource occupied by the second service data;
The position of the reserved resource has an offset relative to the position of the resource occupied by the second service data, or has no offset; or, the size of the reserved resource has a scaling factor relative to the size of the resource occupied by the second service data, or has no change.
With reference to the fifteenth aspect, in a possible implementation manner of the fifteenth aspect, a relative time domain position of the reserved resource is the same as a relative time domain position of a first resource, a frequency domain position of the reserved resource is the same as a frequency domain position of the first resource, and sizes of the reserved resource and the first resource are the same; or, the relative time domain position of the reserved resource has a first deviation from the relative time domain position of the first resource, and/or the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource; the reserved resource and the first resource have the same size;
wherein the first resource is a resource occupied by the second service data, the relative time domain position of the first resource is a relative position of the time domain position of the first resource in a time unit, and the relative time domain position of the second resource is a relative position of the time domain position of the second resource in the time unit.
With reference to the fifteenth aspect, in a possible implementation manner of the fifteenth aspect, the first signaling further carries third information, where the third information is an MCS of the first service data, or the third information is a difference between the MCS of the second service data and the MCS of the first service data.
With reference to the fifteenth aspect, in a possible implementation manner of the fifteenth aspect, the first signaling further carries fourth information, and the fourth information is the scaling factor.
With reference to the fifteenth aspect, in a possible implementation manner of the fifteenth aspect, the second traffic data is sent through a second resource; the reserved resource is selected from a second resource, and a third position of the second resource has an association relation with a first position of the reserved resource, wherein the first position is a position of the reserved resource in a resource pool, and the third position is a position of the second resource in the resource pool.
With reference to the fifteenth aspect, in a possible implementation manner of the fifteenth aspect, the time domain information is used to indicate a length of time occupied by the reserved resource, and specifically is:
The time domain information includes a time domain starting position and a time length of the reserved resource, or includes a time domain starting position and a time domain ending position of the reserved resource.
For example, the time domain information may further include a time domain end position and a time length of the reserved resource, and the like.
With reference to the fifteenth aspect, in a possible implementation manner of the fifteenth aspect, the frequency domain information is used to indicate a frequency domain bandwidth of the reserved resource, and specifically is:
the frequency domain information includes a frequency domain starting position and a frequency domain bandwidth of the reserved resource, or includes a frequency domain starting position and an end position of the reserved resource.
For example, the time domain information may further include a time domain end position and a time length of the reserved resource, and the like.
With reference to the fifteenth aspect, in a possible implementation manner of the fifteenth aspect, the first signaling is SCI, system message, RRC signaling, or MAC signaling.
With regard to the technical effects of the various possible embodiments of the fifteenth aspect or the fifteenth aspect, reference may be made to the introduction to the technical effects of the respective embodiments of the third aspect or the third aspect.
In a sixteenth aspect, a communication device is provided, for example, a second terminal device as described above. The communication device comprises a processor and a transceiver coupled to each other for implementing the method as described in the above fourth aspect or in various possible designs of the fourth aspect. Illustratively, the communication means is a chip provided in the communication device. Illustratively, the communication device is a second terminal device. Wherein, the transceiver is implemented by an antenna, a feeder, a codec, etc. in the communication device, for example, or, if the communication device is a chip disposed in the communication device, the transceiver is, for example, a communication interface in the chip, and the communication interface is connected with a radio frequency transceiving component in the communication device to implement transceiving of information by the radio frequency transceiving component. Wherein the transceiver is configured to receive a first signaling from a first terminal device, and a parameter of the first signaling includes at least one of the following parameters: the resource of the first signaling is borne, the size of the first signaling, or the RNTI of the CRC for scrambling the first signaling, the parameter of the first signaling is used to indicate the time domain information and/or the frequency domain information of the reserved resource, the time domain information is used to indicate the time length occupied by the reserved resource, and the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource;
The transceiver is further configured to receive first traffic data or control information from the first terminal device on the reserved resources.
With reference to the sixteenth aspect, in a possible implementation manner of the sixteenth aspect, the processor is configured to determine the reserved resource according to a parameter of the first signaling.
With reference to the sixteenth aspect, in a possible implementation manner of the sixteenth aspect, the parameter of the first signaling is further used to indicate one or any combination of the following information:
a channel corresponding to the reserved resource;
the reserved resources are for multiple transmissions of one transport block;
the reserved resource is for a single transmission of a plurality of transport blocks;
the reserved resources are used for data initial transmission or data retransmission; or, the reserved resource is used for multicast service, broadcast service or unicast service.
With reference to the sixteenth aspect, in a possible implementation manner of the sixteenth aspect, in a possible implementation manner, the time domain information is further used to indicate:
a time domain offset, which is a time interval from a time point of transmitting the first signaling to a starting time point of the reserved resource.
The time domain offset may enable the second terminal device to explicitly determine the time domain position of the reserved resource.
With reference to the sixteenth aspect, in a possible implementation manner of the sixteenth aspect, the time domain information is further used to indicate:
a resource reservation period, wherein the reserved resources are repeated in a time domain at intervals of the resource reservation period; and/or reserving the number of times, wherein the reserved number of times is the number of times that the reserved resources are repeated on the time domain at intervals of the resource reservation period.
With reference to the sixteenth aspect, in a possible implementation manner of the sixteenth aspect, the first signaling does not include scheduling information of traffic data.
With reference to the sixteenth aspect, in a possible implementation manner of the sixteenth aspect, the first signaling is further configured to schedule second traffic data; the time domain information and/or the frequency domain information of the reserved resources include one or any combination of the following items:
the reserved resource has frequency hopping or does not have frequency hopping relative to the resource occupied by the second service data;
the position of the reserved resource has an offset relative to the position of the resource occupied by the second service data, or has no offset; or, the size of the reserved resource has a scaling factor relative to the size of the resource occupied by the second service data, or has no change.
With reference to the sixteenth aspect, in a possible implementation manner of the sixteenth aspect, the relative time domain position of the reserved resource is the same as the relative time domain position of the first resource, the frequency domain position of the reserved resource is the same as the frequency domain position of the first resource, and the size of the reserved resource is the same as the size of the first resource; or, the relative time domain position of the reserved resource has a first deviation from the relative time domain position of the first resource, and/or the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource; the reserved resource and the first resource have the same size;
wherein the first resource is a resource occupied by the second service data, the relative time domain position of the first resource is a relative position of the time domain position of the first resource in a time unit, and the relative time domain position of the second resource is a relative position of the time domain position of the second resource in the time unit.
With reference to the sixteenth aspect, in a possible implementation manner of the sixteenth aspect, the first signaling further carries third information, where the third information is an MCS of the first service data, or the third information is a difference between the MCS of the second service data and the MCS of the first service data.
With reference to the sixteenth aspect, in a possible implementation manner of the sixteenth aspect, the first signaling further carries fourth information, and the fourth information is the scaling factor.
With reference to the sixteenth aspect, in a possible implementation manner of the sixteenth aspect, the second service data is sent through a second resource; the reserved resource is selected from a second resource, and a third position of the second resource has an association relation with a first position of the reserved resource, wherein the first position is a position of the reserved resource in a resource pool, and the third position is a position of the second resource in the resource pool.
With reference to the sixteenth aspect, in a possible implementation manner of the sixteenth aspect, the time domain information is used to indicate a length of time occupied by the reserved resource, and specifically:
the time domain information includes a time domain starting position and a time length of the reserved resource, or includes a time domain starting position and a time domain ending position of the reserved resource.
With reference to the sixteenth aspect, in a possible implementation manner of the sixteenth aspect, the frequency domain information is used to indicate a frequency domain bandwidth of the reserved resource, and specifically:
The frequency domain information includes a frequency domain starting position and a frequency domain bandwidth of the reserved resource, or includes a frequency domain starting position and an end position of the reserved resource.
With reference to the sixteenth aspect, in a possible implementation manner of the sixteenth aspect, the first signaling is SCI, system message, RRC signaling, or MAC signaling.
With regard to the technical effects of the various possible embodiments of the sixteenth aspect or the sixteenth aspect, reference may be made to the introduction to the technical effects of the respective embodiments of the fourth aspect or the fourth aspect.
A seventeenth aspect provides a communication device, such as the first terminal device described above. The communication device comprises a processor and a transceiver coupled to each other for implementing the method as described in the above fifth aspect or in various possible designs of the fifth aspect. Illustratively, the communication means is a chip provided in the communication device. Illustratively, the communication device is a first terminal device. Wherein, the transceiver is implemented by an antenna, a feeder, a codec, etc. in the communication device, for example, or, if the communication device is a chip disposed in the communication device, the transceiver is, for example, a communication interface in the chip, and the communication interface is connected with a radio frequency transceiving component in the communication device to implement transceiving of information by the radio frequency transceiving component. The transceiver is configured to transmit first service data on a first resource, where the first service data includes M data blocks;
The transceiver is further configured to receive positive acknowledgements for N of the M data blocks, or receive no negative acknowledgements for N of the M data blocks, where M and N are positive integers and M is greater than or equal to N;
the processor is configured to release a third resource, where the third resource is a resource reserved for the N data blocks, and the third resource does not include a resource portion corresponding to the N data blocks in the first resource.
With reference to the seventeenth aspect, in a possible implementation manner of the seventeenth aspect, the transceiver is further configured to transmit M-N data blocks on second resources, where the M-N data blocks are data blocks of the M data blocks except the N data blocks, the second resources are resources reserved for the M-N data blocks, and the second resources do not include corresponding resource portions of the M data blocks in the first resources.
With reference to the seventeenth aspect, in a possible implementation manner of the seventeenth aspect, the third resource has an association relationship with the N acknowledgements.
With reference to the seventeenth aspect, in a possible implementation manner of the seventeenth aspect, the third resource has an association relationship with the N acknowledgements, and includes:
The third resource has an association relationship with a fourth resource for carrying the N acknowledgements.
With reference to the seventeenth aspect, in a possible implementation manner of the seventeenth aspect, the transceiver is further configured to receive M-N negative acknowledgements for the M-N data blocks.
With reference to the seventeenth aspect, in a possible implementation manner of the seventeenth aspect, the first traffic data corresponds to one transport block, the transport block includes the M data blocks, the M data blocks are M code blocks or M code block groups, and one acknowledgement or negative acknowledgement corresponds to one code block or one code block group.
With reference to the seventeenth aspect, in a possible implementation manner of the seventeenth aspect, the first service data corresponds to M transport blocks, the M transport blocks are the M data blocks, and one acknowledgement or negative acknowledgement corresponds to one transport block.
With regard to the technical effects of the various possible embodiments of the seventeenth aspect or of the seventeenth aspect, reference may be made to the introduction to the technical effects of the respective embodiments of the fifth aspect or of the fifth aspect.
In an eighteenth aspect, a communication device is provided, for example, a second terminal device as described above. The communication device comprises a processor and a transceiver coupled to each other for implementing the method as described in the various possible designs of the sixth aspect or the sixth aspect described above. Illustratively, the communication means is a chip provided in the communication device. Illustratively, the communication device is a second terminal device. Wherein, the transceiver is implemented by an antenna, a feeder, a codec, etc. in the communication device, for example, or, if the communication device is a chip disposed in the communication device, the transceiver is, for example, a communication interface in the chip, and the communication interface is connected with a radio frequency transceiving component in the communication device to implement transceiving of information by the radio frequency transceiving component. The transceiver is configured to receive N acknowledgements from a third terminal device, where the N acknowledgements correspond to N data blocks in first service data received by the third terminal device from a first terminal device, and N is a positive integer;
The processor is configured to determine that a third resource having an association relationship with the N positive acknowledgements is an available resource.
With reference to the eighteenth aspect, in a possible implementation manner of the eighteenth aspect, the third resource is a resource reserved for the N data blocks.
With reference to the eighteenth aspect, in a possible implementation manner of the eighteenth aspect, the processor is further configured to occupy the third resource to transmit second service data.
With reference to the eighteenth aspect, in a possible implementation manner of the eighteenth aspect, the processor is configured to determine that a third resource having an association relationship with the N acknowledgements is an available resource by:
determining that the third resource having an association relation with fourth resources corresponding to the N positive acknowledgements is an available resource, wherein the fourth resource is a resource carrying the N positive acknowledgements.
With reference to the eighteenth aspect, in a possible implementation manner of the eighteenth aspect, the first traffic data corresponds to a transport block, the transport block includes M code blocks or code block groups, one acknowledgement or negative acknowledgement corresponds to one code block or code block group, the N data blocks are N code blocks included in the M code blocks, or the N data blocks are N code block groups included in the M code block groups, and M is greater than N.
With reference to the eighteenth aspect, in a possible implementation manner of the eighteenth aspect, the first service data corresponds to M transport blocks, the N data blocks are N transport blocks included in the M transport blocks, and one acknowledgement or negative acknowledgement corresponds to one transport block.
With regard to the technical effects of the various possible embodiments of the eighteenth aspect or of the eighteenth aspect, reference may be made to the introduction to the technical effects of the respective embodiments of the sixth aspect or of the sixth aspect.
In a nineteenth aspect, a communication device is provided. The communication device may be the first terminal device in the above method design. Illustratively, the communication means is a chip provided in the communication device. Illustratively, the communication device is a first terminal device. The communication device includes: a memory for storing computer executable program code; and a processor coupled with the memory. Wherein the program code stored by the memory comprises instructions which, when executed by the processor, cause the communication device to perform the method of the first aspect or any one of the possible embodiments of the first aspect.
Wherein the communication means may further comprise a communication interface, which may be a transceiver in the first terminal device, for example, implemented by an antenna, a feeder, a codec, etc. in the communication means, or, if the communication means is a chip provided in the first terminal device, the communication interface may be an input/output interface of the chip, for example, an input/output pin, etc.
In a twentieth aspect, a communication device is provided. The communication device may be the first terminal device in the above method design. Illustratively, the communication means is a chip provided in the communication device. Illustratively, the communication device is a first terminal device. The communication device includes: a memory for storing computer executable program code; and a processor coupled with the memory. Wherein the program code stored by the memory comprises instructions which, when executed by the processor, cause the communication device to perform the method of the second aspect or any one of the possible embodiments of the second aspect.
Wherein the communication means may further comprise a communication interface, which may be a transceiver in the first terminal device, for example, implemented by an antenna, a feeder, a codec, etc. in the communication means, or, if the communication means is a chip provided in the first terminal device, the communication interface may be an input/output interface of the chip, for example, an input/output pin, etc.
In a twenty-first aspect, a communications apparatus is provided. The communication device may be the second terminal device in the above method design. Illustratively, the communication means is a chip provided in the communication device. Illustratively, the communication device is a first terminal device. The communication device includes: a memory for storing computer executable program code; and a processor coupled with the memory. Wherein the program code stored by the memory comprises instructions which, when executed by the processor, cause the communication apparatus to perform the method of the third aspect or any one of the possible embodiments of the third aspect.
Wherein the communication means may further comprise a communication interface, which may be a transceiver in the second terminal device, for example, implemented by an antenna, a feeder, a codec, etc. in the communication means, or, if the communication means is a chip provided in the second terminal device, the communication interface may be an input/output interface of the chip, for example, an input/output pin, etc.
In a twenty-second aspect, a communications apparatus is provided. The communication device may be the second terminal device in the above method design. Illustratively, the communication means is a chip provided in the communication device. Illustratively, the communication device is a first terminal device. The communication device includes: a memory for storing computer executable program code; and a processor coupled with the memory. Wherein the program code stored by the memory comprises instructions which, when executed by the processor, cause the communication apparatus to perform the method of the fourth aspect or any one of the possible embodiments of the fourth aspect.
Wherein the communication means may further comprise a communication interface, which may be a transceiver in the second terminal device, for example, implemented by an antenna, a feeder, a codec, etc. in the communication means, or, if the communication means is a chip provided in the second terminal device, the communication interface may be an input/output interface of the chip, for example, an input/output pin, etc.
In a twenty-third aspect, a communications apparatus is provided. The communication device may be the first terminal device in the above method design. Illustratively, the communication means is a chip provided in the communication device. Illustratively, the communication device is a first terminal device. The communication device includes: a memory for storing computer executable program code; and a processor coupled with the memory. Wherein the program code stored by the memory comprises instructions which, when executed by the processor, cause the communication apparatus to perform the method of the fifth aspect or any one of the possible embodiments of the fifth aspect.
Wherein the communication means may further comprise a communication interface, which may be a transceiver in the first terminal device, for example, implemented by an antenna, a feeder, a codec, etc. in the communication means, or, if the communication means is a chip provided in the first terminal device, the communication interface may be an input/output interface of the chip, for example, an input/output pin, etc.
In a twenty-fourth aspect, a communication device is provided. The communication device may be the second terminal device in the above method design. Illustratively, the communication means is a chip provided in the communication device. Illustratively, the communication device is a second terminal device. The communication device includes: a memory for storing computer executable program code; and a processor coupled with the memory. Wherein the program code stored by the memory comprises instructions which, when executed by the processor, cause the communication device to perform the method of the sixth aspect or any one of the possible embodiments of the sixth aspect.
Wherein the communication means may further comprise a communication interface, which may be a transceiver in the second terminal device, for example, implemented by an antenna, a feeder, a codec, etc. in the communication means, or, if the communication means is a chip provided in the second terminal device, the communication interface may be an input/output interface of the chip, for example, an input/output pin, etc.
A twenty-fifth aspect provides a first communication system comprising the communication apparatus of the seventh aspect, the communication apparatus of the thirteenth aspect, or the communication apparatus of the nineteenth aspect, and comprising the communication apparatus of the ninth aspect, the communication apparatus of the fifteenth aspect, or the communication apparatus of the twenty-first aspect.
A twenty-sixth aspect provides a communication system comprising the communication apparatus of the eighth aspect, the communication apparatus of the fourteenth aspect, or the communication apparatus of the twentieth aspect, and comprising the communication apparatus of the tenth aspect, the communication apparatus of the sixteenth aspect, or the communication apparatus of the twenty-second aspect.
The communication system according to the twenty-fifth aspect and the communication system according to the twenty-sixth aspect may be the same communication system or may be different communication systems.
A twenty-seventh aspect provides a communication system comprising the communication apparatus of the eleventh aspect, the communication apparatus of the seventeenth aspect, or the communication apparatus of the twenty-fourth aspect, and comprising the communication apparatus of the twelfth aspect, the communication apparatus of the eighteenth aspect, or the communication apparatus of the twenty-fourth aspect.
A twenty-eighth aspect provides a computer storage medium having stored therein instructions that, when run on a computer, cause the computer to perform the method as set forth in the above first aspect or any one of the possible designs of the first aspect.
A twenty-ninth aspect provides a computer storage medium having stored therein instructions that, when executed on a computer, cause the computer to perform the method as set forth in the second aspect or any one of the possible designs of the second aspect.
A thirty-first aspect provides a computer storage medium having stored therein instructions that, when run on a computer, cause the computer to perform the method as set forth in the third aspect or any one of the possible designs of the third aspect.
In a thirty-first aspect, there is provided a computer storage medium having stored therein instructions that, when run on a computer, cause the computer to perform the method of the fourth aspect or any one of the possible designs of the fourth aspect.
A thirty-second aspect provides a computer storage medium having stored therein instructions that, when run on a computer, cause the computer to perform the method as set forth in the fifth aspect or any one of the possible designs of the fifth aspect.
A thirty-third aspect provides a computer storage medium having stored therein instructions that, when run on a computer, cause the computer to perform the method as set forth in the sixth aspect or any one of the possible designs of the sixth aspect.
A thirty-seventh aspect provides a computer program product comprising instructions stored thereon, which when run on a computer, cause the computer to perform the method of the first aspect or any one of the possible designs of the first aspect.
In a thirty-eighth aspect, there is provided a computer program product comprising instructions stored thereon, which when run on a computer, cause the computer to perform the method of the second aspect described above or any one of the possible designs of the second aspect.
In a thirty-ninth aspect, there is provided a computer program product comprising instructions stored thereon, which when run on a computer, cause the computer to perform the method of the third aspect or any one of the possible designs of the third aspect.
Fortieth aspect, there is provided a computer program product comprising instructions stored thereon, which when run on a computer, cause the computer to perform the method as set forth in the fourth aspect or any one of the possible designs of the fourth aspect.
Fortieth aspect, a computer program product is provided comprising instructions stored thereon, which when run on a computer, cause the computer to perform the method as set forth in any one of the possible designs of the fifth aspect or the fifth aspect described above.
A forty-second aspect provides a computer program product containing instructions stored thereon, which when run on a computer, cause the computer to perform the method of the sixth aspect or any one of the possible designs of the sixth aspect.
By the method provided by the embodiment of the application, if other information is scheduled at present, the reserved resource can be the same as or different from the period or size of the resource occupied by the currently scheduled information, and as long as the information of the reserved resource is indicated by the first signaling, the second terminal device can acquire the position of the reserved resource, so that the flexibility of resource reservation is improved.
Drawings
FIG. 1 is a diagram illustrating a comparison of symbol lengths at three subcarrier spacings;
FIG. 2 is a schematic diagram of several overlay scenarios of D2D;
FIG. 3 is a schematic diagram of mode1 of the D2D communication process;
FIG. 4 is a diagram of several scenarios of V2X;
fig. 5 is a schematic diagram of one way for a signal transmitting end to transmit SA and data in LTE V2X;
fig. 6 is a schematic diagram of another manner of sending SA and data by a signal sending end in LTE V2X;
fig. 7A to 7E are schematic diagrams of several multiplexing modes of control information and data in V2X;
fig. 8 is a schematic diagram of a detection window and a selection window corresponding to a terminal device;
fig. 9 is a schematic view of an application scenario according to an embodiment of the present application;
fig. 10 is a flowchart of a first communication method according to an embodiment of the present application;
fig. 11 is an example of information indicating at least one first resource through first signaling according to an embodiment of the present application;
Fig. 12A is a first example in which a reserved resource and a first resource have an association relationship in an embodiment of the present application;
fig. 12B is a second example in which the reserved resource and the first resource have an association relationship in the embodiment of the present application;
fig. 12C is a third example in which a reserved resource and a first resource have an association relationship in the embodiment of the present application;
fig. 12D is a fourth example in which the reserved resource and the first resource have an association relationship in the embodiment of the present application;
fig. 12E is a fifth example that the reserved resource and the first resource have an association relationship in the embodiment of the present application;
fig. 13 is another example of information indicating at least one first resource through first signaling in an embodiment of the present application;
fig. 14 is a flowchart of a second communication method provided in the embodiment of the present application;
fig. 15 is a schematic diagram of resources reserved for traffic data in an embodiment of the present application;
fig. 16 is a schematic block diagram of a first terminal device according to an embodiment of the present application;
fig. 17 is another schematic block diagram of a first terminal device according to an embodiment of the present application;
fig. 18 is a schematic block diagram of a second terminal device provided in an embodiment of the present application;
fig. 19 is another schematic block diagram of a second terminal device according to an embodiment of the present application;
Fig. 20 is a schematic block diagram of a third terminal device provided in an embodiment of the present application;
fig. 21 is another schematic block diagram of a third terminal device provided in an embodiment of the present application;
fig. 22 is a schematic block diagram of a fourth terminal device provided in an embodiment of the present application;
fig. 23 is another schematic block diagram of a fourth terminal device provided in an embodiment of the present application;
fig. 24 is a schematic block diagram of a communication device provided by an embodiment of the present application;
fig. 25 is another schematic block diagram of a communication device provided by an embodiment of the present application;
fig. 26 is a further schematic block diagram of a communication device according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.
Hereinafter, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.
1) Terminal equipment, including devices that provide voice and/or data connectivity to a user, may include, for example, handheld devices with wireless connection capability or processing devices connected to wireless modems. The terminal device may communicate with a core network via a Radio Access Network (RAN), exchanging voice and/or data with the RAN. The terminal device may include a User Equipment (UE), a wireless terminal device, a mobile terminal device, a device-to-device communication (D2D) terminal device, a V2X terminal device, a machine-to-machine/machine-type communication (M2M/MTC) terminal device, an internet of things (IoT) terminal device, a subscriber unit (subscriber unit), a subscriber station (subscriber state), a mobile station (mobile state), a remote station (remote state), an access point (access point, AP), a remote terminal (remote terminal), an access terminal (access terminal), a user terminal (user terminal), a user agent (user agent), or a user equipment (user device), etc. For example, mobile telephones (or so-called "cellular" telephones), computers with mobile terminal equipment, portable, pocket, hand-held, computer-included mobile devices, and the like may be included. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like. Also included are constrained devices, such as devices that consume less power, or devices that have limited storage capabilities, or devices that have limited computing capabilities, etc. Examples of information sensing devices include bar codes, Radio Frequency Identification (RFID), sensors, Global Positioning Systems (GPS), laser scanners, and the like.
By way of example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable equipment can also be called wearable smart device or intelligent wearable equipment etc. is the general term of using wearable technique to carry out intelligent design, develop the equipment that can dress to daily wearing, like glasses, gloves, wrist-watch, dress and shoes etc.. A wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, and can implement full or partial functionality without relying on a smart phone, such as: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets, smart helmets, smart jewelry and the like for monitoring physical signs.
The various terminal devices described above, if located on a vehicle (e.g., placed in or installed in the vehicle), may be considered to be vehicle-mounted terminal devices, which are also referred to as on-board units (OBUs), for example. The terminal device in the embodiment of the present application may also be an on-board module, an on-board component, an on-board chip, or an on-board unit that is built in the vehicle as one or more components or units, and the vehicle may implement the method of the present application through the built-in on-board module, the built-in component, the built-in chip, or the built-in unit.
2) Network devices, including, for example, Access Network (AN) devices, such as base stations (e.g., access points), may refer to devices in AN access network that communicate with wireless terminal devices over one or more cells over AN air interface, or, for example, network devices in one type of V2X technology are Road Side Units (RSUs). The base station may be configured to interconvert received air frames and Internet Protocol (IP) packets as a router between the terminal device and the rest of the access network, which may include an IP network. The RSU may be a fixed infrastructure entity supporting the V2X application and may exchange messages with other entities supporting the V2X application. The network device may also coordinate attribute management for the air interface. For example, the network device may include an evolved Node B (NodeB or eNB or e-NodeB) in an LTE system or an LTE-a (long term evolution-advanced), or may also include a next generation Node B (gNB) in a 5G NR system, or may also include a Centralized Unit (CU) and a Distributed Unit (DU) in a Cloud access network (Cloud RAN) system, which is not limited in the embodiments.
3)5G, i.e., the fifth generation mobile communication technology, 5G is required to have higher performance than 4G. The 5G NR Rel-15 defines a new air interface access technology to support the user experience rate of 0.1-1 Gbps, the connection density of one million per square kilometer, the end-to-end time delay of millisecond level, the flow density of dozens of Tbps per square kilometer, the mobility of more than 500Km per hour and the peak rate of dozens of Gbps. The user experience rate, the connection number density and the time delay are three basic performance indexes of 5G. Meanwhile, the efficiency of network deployment and operation needs to be greatly improved by 5G, compared with 4G, the frequency spectrum efficiency is improved by 5-15 times, and the energy efficiency and the cost efficiency are improved by more than one hundred times.
The three major application scenarios and requirements of 5G include:
enhanced mobile broadband (eMBB);
mass internet-of-things communication (mtc);
ultra-reliable and low-latency communications (URLLC).
The scenes corresponding to the URLLC include unmanned driving or industrial control, and the like, and low time delay and high reliability are required. The specific requirement of low delay is end-to-end 0.5ms delay, air interface information interaction returns to and fro 1ms delay, and the specific requirement of high reliability is that the block error rate (BLER) reaches 10 -5That is, the correct reception rate of the data packet reaches 99.999%.
In NR systems, various subcarrier spacings are introduced, and different carriers or different fractional Bandwidths (BWPs) in a carrier may have different subcarrier spacings. The baseline is 15kHz, and the subcarrier spacing for each carrier can be 15kHz 2 n, n being an integer from 3.75kHz, 7.5kHz up to 480kHz, up to 8, although other possibilities are not excluded. There are also different symbol lengths, slot lengths, corresponding to different subcarrier spacings. Referring to fig. 1, a comparison of symbol lengths at three subcarrier spacings may be shown, where f0, f1, and f2 represent three subcarrier spacings, e.g., f1 is twice as long as f0, and then the length of a symbol at f0 is twice as long as a symbol at f1, e.g., f2 is twice as long as f1, and similarly, the length of a symbol at f1 is twice as long as a symbol at f 2.
In the time domain, in the NR system, one timeslot may be composed of at least one of downlink transmission, Guard Period (GP), uplink transmission, and the like. The structure of such slots is called a different Slot Format (SFI), and at most 256 slot structures are currently possible, although the possibility of other slot structures in the future is not excluded.
In the frequency domain, since the single carrier bandwidth of the NR system may reach 400MHz, and thus a bandwidth part (BWP) is defined in one carrier, the base station may configure multiple Downlink (DL) BWPs/Uplink (UL) BWPs to the terminal device through Radio Resource Control (RRC), and activate one configured DL BWP and one configured UL BWP for the terminal device through Downlink Control Information (DCI), so that the base station may configure multiple DL BWPs/UL BWPs for the terminal device in one carrier, but only one activated DL BWP and one activated UL BWP are provided at one time. When active BWP requires handover, the base station switches the active BWP from BWP1 to BWP2 through DCI. Currently, it is considered that DCI for scheduling downlink can only indicate switching activated DL BWPs, and after receiving DCI for scheduling downlink, a terminal device switches to a new DL BWP to receive a Physical Downlink Shared Channel (PDSCH); the signaling for scheduling uplink can only indicate the UL BWP activated for handover, and after receiving the signaling for scheduling uplink, the terminal device switches to a new UL BWP to transmit a Physical Uplink Shared Channel (PUSCH).
The base station gNB in the NR system may share a spectrum with the base station eNB in the LTE system, for example, on one uplink carrier, the base station gNB in the NR system may coexist with the base station eNB in the LTE system to form an intra-frequency network.
From the terminal equipment's perspective, the terminal equipment in a 5G system may support dual connectivity, i.e. one terminal equipment may be connected to two base stations. When the terminal device is connected to the LTE base station and the NR base station at the same time, if the LTE base station is used as a master base station and the NR base station is used as a slave base station, the scenario is specifically referred to as LTE-NR dual connectivity (EN-DC); whereas if the NR base station is the primary base station and the LTE base station is the secondary base station, this scenario is specifically referred to as NR-LTE dual connectivity (NE-DC).
4) In order to improve spectrum utilization and maximize the utilization of the radio frequency capability of the existing terminal devices, the D2D communication link (also referred to as sidelink) is considered to reuse the spectrum resources of the existing mobile communication network. In order not to interfere with terminal equipment of the existing network, D2D communication does not use the spectrum resources of the downlink (downlink) link of LTE-a, but only multiplexes the spectrum resources of the uplink (uplink) link of LTE-a system, because the interference rejection capability of the base station is stronger than that of the terminal equipment. The D2D devices are more likely to time-division multiplex on the uplink spectrum resources, so that simultaneous transceiving need not be supported, and only need to transmit or receive at one time. Wherein, the downlink of LTE-A is the link from eNB to terminal equipment, and the uplink of LTE-A is the link from terminal equipment to eNB.
In Release (Release) -12/13, the D2D scenario can be divided into 3 scenarios of network coverage, partial network coverage and no network coverage, as shown in fig. 2, where the terminal device in fig. 2 is exemplified by a UE. In a scenario with network coverage, the D2D device is in the coverage of a base station, for example, the UE1 in fig. 2 is a UE with network coverage, and in a scenario with partial network coverage, a part of the D2D device is in the coverage of the base station, for example, the UE2 in fig. 2 is a UE with partial network coverage, and another part of the D2D device is not in the coverage of the base station, for example, the UE3, the UE4, and the UE5 in fig. 2 are UEs without network coverage. If the terminal equipment can receive signals from the network equipment, the terminal equipment is the terminal equipment with network coverage; if the terminal equipment can receive signals from the terminal equipment with network coverage, the terminal equipment is the terminal equipment with partial network coverage; if the terminal equipment cannot receive the signal sent by the base station and the signal sent by the terminal equipment with network coverage, the network equipment is the terminal equipment without network coverage.
In the D2D device discovery process, the D2D device only transmits a discovery signal, generally, the discovery signal is transmitted through a Physical Sidelink Discovery Channel (PSDCH), and after receiving the discovery signal, the other D2D device may handshake with the D2D device that transmits the discovery signal. During communication of the D2D device, the D2D device may transmit control signaling, such as Scheduling Assignment (SA), with different Sidelink Control Information (SCI) formats, and data, which are typically transmitted via PSCCH. It is understood that the downlink control information may be referred to as SA, and may also be referred to as SCI. The link for D2D communication may be referred to as sidelink, as opposed to the Uplink (UL) and Downlink (DL) in LTE.
From the perspective of the signal transmitting end, there are two modes for resource allocation in the D2D device communication process. Mode one (mode1) is a centralized control method, where resources of D2D are allocated by one central control device (e.g., a base station, a relay station, etc.), and the resources are allocated to a terminal device serving as a signal transmitting end by a scheduling method, and the centralized control resource allocation method is mainly used in a scenario with network coverage. Mode two (mode 2) is a contention-based distributed resource multiplexing method, and a terminal device serving as a signal transmitting end acquires transmission resources from a resource pool in a contention manner. In a network coverage scenario, the resource pool is a whole block of resources configured by the base station, and the D2D device contends for a small block of resources in the whole block of resources. In the scenario without network coverage, the resource pool is a predefined system resource that can be obtained by the D2D device, and the D2D device competes for resources under the predefined system resource.
Similar to the D2D device communication process, there are two types of resource allocation for the D2D device discovery process. Type one (type 1) is a contention-based distributed resource multiplexing method, and a terminal device serving as a signal transmitting end acquires transmission resources from a resource pool in a contention manner. In a network coverage scenario, the resource pool is a whole block of resources configured by the base station, and the D2D device contends for a small block of resources in the whole block of resources. In the scenario without network coverage, the resource pool is a predefined system resource that can be obtained by the D2D device, and the D2D device competes for resources under the predefined system resource. Type two (type 2) is a centralized control type method, where resources of D2D are allocated by one central control device (e.g., a base station or a relay station), and the resources are allocated to a terminal device as a signal transmitting end by a scheduling method, and the centralized control type resource allocation mainly aims at a network coverage scenario.
For the D2D device communication process, generally, the signal sending end sends the SA first, and in the LTE system, it is specified that the SA is sent repeatedly 2 times, and the SA carries information related to data, and then the data is sent again, and in the LTE system, it is specified that the data is sent repeatedly 4 times. Referring to fig. 3, a schematic diagram of mode1 is shown, where, for example, both box 1 and box 2 indicate that the base station transmits a D2D grant (grant), and the D2D grant is used to schedule resources for transmitting SA and data, for example, the D2D grant shown in box 1 schedules resources of SA1 and data 0 to data 3 in the next row, and the D2D grant shown in box 2 schedules resources of SA2 and data 4 to data 5 in the next row. The same is true for mode2, except that there is no process for the base station to schedule resources, the resources for transmitting SA and data being determined by the terminal device contention as the signal transmitting end. The signal receiving terminal firstly blindly detects the SA, if the SA is correctly received and the identification number (ID) carried in the SA is matched with at least one ID in the ID list of the receiving party, the SA is indicated to be sent to the signal receiving terminal, and the signal receiving terminal receives subsequent data according to the related information of the data carried in the SA.
The SA has a plurality of formats, i.e., Sidelink Control Information (SCI) format (format), including SCI format 0 and SCI format 1, where SCI format 0 is taken as an example and includes fields as shown in table 1.
TABLE 1
5) V2X, in Rel-14/15/16 version, V2X established itself as a major application of D2D technology. The V2X optimizes the specific application requirements of V2X based on the existing D2D technology, and needs to further reduce the access delay of V2X devices and solve the problem of resource conflict.
The V2X specifically includes three application requirements of V2V, V2P and V2I/N, as shown in FIG. 4. V2V refers to inter-vehicle communication; V2P refers to vehicle-to-person communication (including pedestrians, cyclists, drivers, or passengers); V2I refers to vehicle to network device communication, such as RSU, and another V2N may be included in V2I, V2N refers to vehicle to base station/network communication.
Among them, the RSU includes two types: the RSU of the terminal type is in a non-mobile state because the RSU is distributed on the roadside, and the mobility does not need to be considered; the RSU, being of the base station type, can provide timing synchronization and resource scheduling to the vehicle with which it communicates.
For LTE V2X communication, in order to guarantee the delay requirement, the signal transmitting end may transmit SA and data simultaneously within one subframe, as shown in fig. 5. The signal receiving end firstly blindly detects the SA and needs to buffer the data of the same subframe at the same time, because the data scheduled by the SA is possibly in the same subframe, if the SA is correctly received and the ID carried in the SA is matched with the ID of the signal receiving end, the signal receiving end determines whether to demodulate or decode the buffered data in the same subframe or receive the data in the subsequent subframe according to the related information of the data carried in the SA. In the scheme shown in fig. 5, resources for transmitting the SA and resources for transmitting the data have respective resource pools, a portion shown by a dotted frame in fig. 5 is a resource pool of the SA, and the remaining portion other than the portion shown by the dotted frame is a resource pool of the data.
In order to reduce a peak to average power ratio (PAPR), it is preferable for a terminal device that resources for transmitting the SA and resources for transmitting data are contiguous in the frequency domain. So another method is to share the resource pool with the SA and the data, and the SA can be placed continuously with the data in the frequency domain, as shown in fig. 6.
In NR V2X, multiple multiplexing modes of control information and data can be supported, for example, the following 5 modes:
1. a Time Division Multiplexing (TDM) manner, and the frequency domain bandwidth occupied by the data and the control information is the same, refer to fig. 7A;
2. in a TDM manner, and the frequency domain bandwidth occupied by the data and the control information is different, but the starting position of the frequency domain resource occupied by the data is the same as the starting position of the frequency domain resource occupied by the control information, refer to fig. 7B;
3. FDM mode, and the data and control information have the same time domain length, refer to fig. 7C;
4. the data and the control information are in an embedded multiplexing manner, and the resource occupied by the control information is located in the area of the resource occupied by the data, or the control information is a part of the resource multiplexed with the data, which can be referred to fig. 7D;
5. for FDM, and the data and the control information have different time domain lengths, but the start position of the data in the time domain is the same as the start position of the control information in the time domain, refer to fig. 7E.
6) The terms "system" and "network" in the embodiments of the present application may be used interchangeably. "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.
And, unless stated to the contrary, the embodiments of the present application refer to the ordinal numbers "first", "second", etc., for distinguishing a plurality of objects, and do not limit the sequence, timing, priority, or importance of the plurality of objects. For example, the first priority criterion and the second priority criterion are only used for distinguishing different criteria, and do not represent the difference of the content, priority, importance, and the like of the two criteria.
Having described some of the concepts related to the embodiments of the present application, the following describes features of the embodiments of the present application.
Similar to the resource allocation pattern of D2D, there are also two patterns for resource allocation of V2X: mode three (mode 3) and mode four (mode 4).
Mode three is similar to mode one and is a centralized control method. In the third mode, resources are allocated by a central control device (e.g., a base station or a relay station), and the resources are allocated to a terminal device serving as a signal transmitting end in a scheduling manner. Unlike the mode one in which the base station schedules resources only once, in the mode three, the resources scheduled by the base station may also be used for multiple times for the terminal device serving as the signal transmitting end, which is a manner similar to semi-persistent scheduling (SPS). The centralized control type resource allocation is mainly aimed at the network coverage scene.
The mode four is similar to the mode two, and is a distributed resource multiplexing method based on contention, and a terminal device serving as a signal sending end obtains sending resources from a resource pool in a contention mode. In a network coverage scenario, the resource pool is a whole resource separated by the base station, and each terminal device competes for a small resource in the whole resource. In a scenario without network coverage, the resource pool is a predefined system bandwidth that can be obtained by the terminal device, and each terminal device competes for resources under the predefined system bandwidth. Unlike the mode two in which the terminal device serving as the signal sending end completely randomly selects resources in the resource pool, in the mode four, the terminal device serving as the signal sending end needs to monitor (sending) the resources before sending so as to identify which resources are already occupied and which resources are available.
The sensing technique of mode four includes energy detection and/or SA decoding (decoding), specifically, energy detection or SA decoding, or both. Energy detection and SA decoding, both of which may be used separately or in combination. Energy detection, i.e. the terminal device performs energy measurement on each resource unit in the resource pool, for example, measuring Reference Signal Received Power (RSRP) or Reference Signal Received Quality (RSRQ) of the resource. If the measurement exceeds a certain threshold, the corresponding resource is considered to be already occupied, otherwise the corresponding resource is considered to be a free resource.
And SA decoding, namely the terminal device receives the SAs from other terminal devices in the resource pool and then decodes the received SAs. The SA includes resource information of data to be sent by the other terminal device, that is, resource information occupied by the data to be sent by the other terminal device in the resource pool is indicated in the SA. Therefore, the terminal device can know the resources occupied by other terminal devices in the resource pool by decoding the SAs of other terminal devices. If the terminal equipment successfully decodes the SA, the corresponding resources are considered to be occupied, and if the decoding is unsuccessful, the other terminal equipment is considered not to occupy the resources in the resource pool. The terminal device can only transmit data on the resources which are not occupied in the resource pool.
The energy detection and/or SA decoding is performed in a time window of a fixed size in the resource pool, or the terminal device may perform the energy detection or SA decoding continuously, and when there is data to be transmitted, the terminal device checks the detection result or decoding result in the time window and selects an available resource. Referring to fig. 8, the size of a time window (detection window in fig. 8) corresponding to energy detection and/or SA decoding may be 1 s. When data arrives, that is, in fig. 8, there is a selection (or reselection) trigger at time n, the terminal device looks at the detection results or decoding results within the detection windows of n — (n-a) to select the available resources to transmit data within the selection window of [ n + T1, n + T2], for example, the terminal device selects to transmit SA at time n + c within [ n + T1, n + T2], and transmits data (data) at time n + d.
Regarding the resource selection of V2X, the resource selection is currently divided into three steps:
And 2, the terminal equipment eliminates the occupied resources in the resource pool by using SA decoding in the sending technology.
If there are more resources available remaining after the exclusion, step 3 may be performed. Alternatively, if no resources are available after the exclusion, the terminal device continues to perform energy detection on already occupied resources. For a resource, if the detected energy value is less than the threshold value, the resource is an available resource, and if the detected energy value is not less than the threshold value, the resource is an unavailable resource. The available resources of the terminal device may constitute a candidate set of resources. And if the total number of the available resources of the terminal equipment is less than 20% of all the resources in the resource pool, increasing the threshold value of the energy value at an interval with the step length of 3dB, and repeating the operation of the step 2 after the increase until the total number of the available resources of the terminal equipment is greater than or equal to 20% of all the resources in the resource pool.
Wherein, the threshold value is associated with the priority information of the V2X service, the higher the priority, the higher the threshold value, otherwise, the smaller the threshold value. There are currently a total of 8 priorities in V2X, indicated in the SA with 3 bit (bit) signaling. The terminal equipment decodes the SA from other terminal equipment to obtain the priority of the service of other terminal equipment, and compares the obtained priority with the priority of the service of the terminal equipment to determine the used threshold value. For example, an 8 × 8 priority comparison table is obtained from 8 priorities, each cell in the table represents a threshold, there are 64 thresholds in total, and the threshold ranges from [ -128dBm ] to [0dBm ], and every 2dB takes a value.
In addition, in step 2, when the terminal device decodes the SAs from other terminal devices, not only the resource location occupied by the current data sent by other terminal devices can be solved, but also the resource location reserved by other terminal devices for sending data next time can be known. That is, if the terminal device 1 transmits the current SA at a Transmission Time Interval (TTI) (n + c), other terminal devices solve the SA, know the resource location currently occupied by the terminal device 1, and also know the reservation period of the terminal device 1 for the currently occupied frequency domain resource, that is, the terminal device 1 transmits the current packet at TTI (n + d), the location of the period length of the reservation interval P i in the time domain is used as the resource for the next packet transmission, that is, the time domain resource location for the next packet transmission is TTI (n + d + P i), where P is 100, i has a value range of [0,1,2, ….10], i is 0 indicating no resource reservation, i is 1 indicating a reservation period of 100 x 1, i is 2 indicating a reservation period of 100 x 2, and so on, the maximum reservation period is 1000 ms. The value of i is indicated in SA with 4-bit signaling.
And step 3, comprising the following three substeps.
And 3-0, determining the time of the resource occupied by each terminal device by using a counter. When the terminal equipment starts to occupy the resources, the counter is set (setup) to be the maximum value, then the value of the counter is reduced according to the time lapse, when the value of the counter is reduced to 0, the terminal equipment randomly selects a probability value p, the value range of the probability value p is [0,0.2,0.4,0.6,0.8], in addition, the terminal equipment also generates a random number, and the random number is compared with the probability value p to determine whether to continuously use the currently occupied resources. For example, if p is 0.4, the terminal device compares 0.4 with the generated random number, and if the random number is greater than or equal to p, the terminal device continues to transmit data using the current resource while resetting (reset) the value of the counter to the maximum value, and the terminal device does not need to perform steps 3-1 and 3-2; or, if the random number is less than p, the terminal device reselects the resource in the resource pool, and at this time, the terminal device executes the step 3-1 and the step 3-2.
And 3-1, the terminal equipment sorts the available resources obtained in the step 2 according to the energy values, and then selects a resource subset with the lowest energy value from the candidate resource set according to the sequence of the energy values from small to large, wherein the resource subset is equal to 20% of all resources of the whole resource pool.
And 3-2, the terminal equipment randomly selects resources in the resource subset to send the data packet.
When the terminal device transmits data, the transmitted data may be periodic data, and therefore when the terminal device selects resources, resources that are subsequently required to be used by the periodic data need to be reserved in addition to the resources used this time. At present, when the resources are reserved, the size and the like of the reserved resources are fixed, and the reservation mechanism is not flexible enough.
In view of this, the technical solutions of the embodiments of the present application are provided. In this embodiment, the first terminal device may indicate, by sending the first signaling, time domain information and/or frequency domain information of the reserved resource, as the information that the second terminal device at the receiving end can acquire the reserved resource, so that the first service data or the control information can be received at a correct position through the reserved resource. By the method provided by the embodiment of the application, if other information is scheduled at present, the reserved resource can be the same as or different from the period or size of the resource occupied by the currently scheduled information, and as long as the information of the reserved resource is indicated by the first signaling, the second terminal device can acquire the position of the reserved resource, so that the flexibility of resource reservation is improved.
The technical solution provided in the embodiment of the present application may be applied to a D2D scenario, may be an NR D2D scenario, an LTE 2D scenario, or the like, or may be applied to a V2X scenario, an NR V2X scenario, an LTE V2X scenario, or the like, or may be applied to other scenarios or other communication systems, which is not limited specifically.
The network architecture applied in the embodiments of the present application is described below. Please refer to fig. 9, which illustrates a network architecture applied in the present embodiment.
Fig. 9 includes a network device and two terminal devices, which are respectively a terminal device 1 and a terminal device 2, where both of the two terminal devices may be connected to the network device, or only the terminal device 1 may be connected to the network device, and the terminal device 2 is not connected to the network device, and the two terminal devices may also communicate with each other through sidelink, that is, the terminal device 1 is a terminal device with network coverage, and the terminal device 2 is a terminal device with partial network coverage. Fig. 9 exemplifies that only the terminal device 1 is connected to the network device. Of course, the number of terminal devices in fig. 9 is only an example, and in practical applications, the network device may provide services for a plurality of terminal devices.
The network device in fig. 9 is, for example, an access network device, such as a base station. Wherein the access network equipment corresponds to different equipment on different systems, e.g. on the fourth generation mobile communication technology (the 4)thgeneration, 4G) system may correspond to an eNB, and in a 5G system corresponds to an access network device in 5G, for example, a gNB.
The terminal device in fig. 9 is a vehicle-mounted terminal device or a vehicle as an example, but the terminal device in the embodiment of the present application is not limited thereto.
The technical solution provided by the embodiments of the present application is described below with reference to the accompanying drawings.
An embodiment of the present application provides a communication method, please refer to fig. 10, which is a flowchart of the method. In the following description, the method is applied to the network architecture shown in fig. 9 as an example. In addition, the method may be performed by two communication devices, e.g. a first communication device and a second communication device. The first communication device or the second communication device may be a network device or a communication device capable of supporting the network device to implement the functions required by the method, or may be a terminal device or a communication device capable of supporting the terminal device to implement the functions required by the method, or may be other communication devices such as a system on chip. The implementation manner of the first communication apparatus or the second communication apparatus is not limited, for example, the two communication apparatuses may be implemented in the same form, for example, both implemented in the form of a device, or the two communication apparatuses may also be implemented in different forms, for example, the first communication apparatus is implemented in the form of a device, the second communication apparatus is implemented in the form of a system-on-chip, and so on. The network device is, for example, a base station.
For convenience of introduction, in the following, the method is taken as an example performed by a terminal device and a terminal device, that is, the first communication apparatus is a terminal device (for example, referred to as a first terminal device), and the second communication apparatus is a terminal device (for example, referred to as a second terminal device). Since this embodiment is applied to the network architecture shown in fig. 9 as an example, the first terminal device described below may be the terminal device 1 in the network architecture shown in fig. 9, and the second terminal device described below may be the terminal device 2 in the network architecture shown in fig. 9. In the following, a plurality of second terminal devices may be involved, of which only one is illustrated in fig. 9. Further the network devices described below may be network devices in the network architecture shown in fig. 9.
S101, the first terminal device determines reserved resources.
The reserved resources are for use in transmitting information in the future, and the information transmitted through the reserved resources may include traffic data or control information, etc. The first terminal device may not determine what information the reserved resource is used to transmit when determining the reserved resource, but merely leave the reserved resource for standby; alternatively, the first terminal device may reserve the reserved resource when the purpose of the reserved resource is clear, for example, the first terminal device determines the reserved resource for the first information.
The first information may include one or any combination of the following: traffic data (which may be referred to as first traffic data), control information, or feedback information. For example, the first information includes only the first service data, or the first information includes only the control information, or the first information includes only the feedback information, or the first information includes only the first service data and the control information, or the first information includes only the control information and the feedback information, or the first information includes only the first service data and the feedback information, or the first information includes the first service data, the control information, and the feedback information. The first service data is carried through a data channel, for example, the data channel is a physical sidelink shared channel (psch); the control information is carried, for example, by a control channel, for example, a physical sidelink control channel (psch), and the control information includes, for example, Sidelink Control Information (SCI); the feedback information is carried, for example, through a feedback channel, for example, a Physical Sidelink Feedback Channel (PSFCH), and the feedback information includes, for example, sidelink feedback information (SFCI). More specifically, the feedback information may include an Acknowledgement (ACK) or a Negative Acknowledgement (NACK), etc. It may be appreciated that the reserved resources may correspond to at least one of a data channel, a control channel, or a feedback channel.
The first information is, for example, periodic information, for example, the first information is first service data, and the first service data is periodic service data, so that the first terminal device may determine that the reserved number of times of the reserved resource is multiple times. Or the first information may not be periodic information, but may need to be transmitted multiple times, the first terminal device may determine that the reserved resources include a plurality of sub-resources, which are aperiodic resources. In the case that the first information is periodic information, the reserved resources of different times may also be periodic resources, and the reserved resources may be considered as reserved resources of one of the periods, which is equivalent to reserving the reserved resources multiple times.
If the reserved resources need to be periodically reserved, the number of times of reservation of the reserved resources is multiple, which indicates that the number of the reserved resources is multiple, and certainly, the time domain information of different reserved resources is different. The periodically reserved resource is understood to be a resource reserved a plurality of times, which is equivalent to reserving a plurality of resources (each resource is referred to as a reserved resource), and the plurality of resources are periodic resources. One reserved resource may be used for transmitting the first information at one time, and a plurality of reserved resources may be used for transmitting the first information at least once. In addition, if the first information is transmitted multiple times, the multiple times of transmission of the first information may be the same, or it is understood that the information carried by the multiple reserved resources is the same. For example, to improve coverage, the same information needs to be transmitted multiple times. Alternatively, if the first information is transmitted multiple times, the first information transmitted multiple times may also be different, or it is understood that the information carried by different reserved resources may be different. For example, the first information is service data, where the service data corresponds to different Transport Blocks (TBs), and it may be considered that one reserved resource is used for bearing one of the transport blocks, and then the transport blocks borne by different reserved resources may be different, that is, the terminal device initially transmits each transport block on the periodically reserved resource; or, the first information is service data, the service data corresponds to one transport block, and multiple reserved resources may be considered to be used for carrying the one transport block, that is, transport blocks carried by different reserved resources are the same, but may be different redundancy versions of the same transport block, that is, the terminal device retransmits one transport block multiple times on the periodically reserved resources; or, the first information is service data, the service data corresponds to a transport block, and the transport block is divided into a plurality of code blocks or code block groups, and one reserved resource is used for carrying one code block or one code block group, so that the code blocks or code block groups carried by different reserved resources may be different.
If the reserved resources are aperiodic, then there may be no notion of the number of reservations. At this time, it may be considered that the reserved resource includes one or more sub-resources. One sub-resource may be used to transmit the first information at one time, and a plurality of sub-resources may be used to transmit the first information at least once. In addition, if the first information is transmitted multiple times, the multiple times of transmission of the first information may be the same, or it is understood that the information carried by the multiple sub-resources is the same. Alternatively, if the first information is transmitted multiple times, the first information transmitted multiple times may also be different, or it is understood that the information carried by different sub-resources may be different. For example, the first information is service data, the service data corresponds to different transmission blocks, and it can be considered that one sub-resource is used for carrying one of the transmission blocks, and then the transmission blocks carried by the different sub-resources may be different, that is, the terminal device initially transmits each transmission block on the non-periodically reserved resource; or, the first information is service data, the service data corresponds to one transport block, and multiple sub-resources may be considered to be used for carrying the one transport block, that is, transport blocks carried by different sub-resources are the same, but may be different redundancy versions of the same transport block, that is, the terminal device retransmits each transport block on the non-periodically reserved resource; or, the first information is service data, the service data corresponds to a transport block, and the transport block is divided into a plurality of code blocks or code block groups, and one sub-resource is used for carrying one code block or one code block group, so that the code blocks or code block groups carried by different sub-resources may be different.
The first information may comprise a transport block, e.g. the transport block needs to be transmitted repeatedly a plurality of times, and the transport block and the reserved resources may correspond one to one, corresponding to the transport block may be transmitted at least once using a periodic plurality of reserved resources or at least once using an aperiodic reserved resource. Alternatively, the first information includes a transport block, but the transport block may be divided into a plurality of code blocks or code block groups, the code blocks or code block groups correspond to reserved resources one to one, one reserved resource carries one code block or code block group, and it is equivalent to transmit the transport block once using a periodically reserved resource or once using an aperiodic reserved resource. Alternatively, the first information may include a plurality of transport blocks, for example, a periodic reserved resource and a transport block are in a one-to-one correspondence, where one periodic reserved resource is used to carry one transport block, and a plurality of periodic reserved resources are used to carry at least one transport block, which is equivalent to that a plurality of periodic reserved resources may be used for a single transmission of at least one transport block. Alternatively, the first information may include a plurality of transport blocks, for example, aperiodic sub-resources and transport blocks are in one-to-one correspondence, one aperiodic sub-resource is used to carry one transport block, and a plurality of aperiodic sub-resources are used to carry at least one transport block, which is equivalent to that a plurality of aperiodic sub-resources may be used for a single transmission of at least one transport block. Or, when the first information includes a plurality of transport blocks, there may be two or more reserved resources in the plurality of periodic reserved resources for carrying the same transport block, and the remaining periodic reserved resources for carrying different transport blocks. Alternatively, when the first information includes a plurality of transport blocks, there may be two or more sub-resources in the non-periodically reserved resources for carrying the same transport block, and the other sub-resources for carrying different transport blocks.
The first information carried by the reserved resource may be initial transmission information or retransmission information, and is not limited specifically. Or, if the plurality of periodically reserved resources all carry the same information, which is equivalent to sending the first information through the plurality of reserved resources multiple times, if the first information carried by the first reserved resource is the initial transmission information, the first information carried by the other reserved resources is the retransmission information. Or, if the plurality of aperiodic sub-resources all carry the same information, which is equivalent to sending the first information through the plurality of sub-resources multiple times, if the first information carried by the first sub-resource is the initial transmission information, the first information carried by the other sub-resources is the retransmission information.
The first information is transmitted through the reserved resource, and may be transmitted in a broadcast manner, or may be transmitted in a multicast manner, or may be transmitted in a unicast manner, or the first information may be broadcast service, multicast service, or unicast service.
Step 101 may be an optional step, and the first terminal device may not perform step 101, consider all resources as available resources, and may arbitrarily select the available resources as reserved resources. Alternatively, the first terminal device may also determine that the resource in the current resource pool is an available resource through step 1 in the resource selection of V2X described above, and may select the resource in the resource pool as the reserved resource. Alternatively, the first terminal device may also select the resources in the resource pool as reserved resources from the remaining available resources by excluding occupied resources in the resource pool through step 1 and step 2 in the resource selection of V2X as described above. Alternatively, the first terminal device may further adjust the set of available resources in conjunction with step 3-1 of the resource selection of V2X as described above, and select resources in the resource pool from the available resources as reserved resources.
S102, a first terminal device sends a first signaling to at least one second terminal device, and the at least one second terminal device receives the first signaling from the first terminal device (only one of the second terminal devices is shown in fig. 10). The first signaling is used for indicating the reserved resource information, or the parameter of the first signaling is used for indicating the reserved resource information. The information of the reserved resource may include time domain information and/or frequency domain information of the reserved resource, where the time domain information is used to indicate a time length occupied by the reserved resource, and the frequency domain information is used to indicate a frequency domain bandwidth of the reserved resource. For example, the time domain information may include a length of time occupied by the reserved resources.
Optionally, the information indicating the reserved resource may include information indicating whether to reserve a resource. The first signaling indicates that no resources are reserved or the first signaling indicates that resources are reserved, e.g., default resources are reserved.
Specifically, the information of the reserved resource may include time domain information or frequency domain information of the reserved resource, or the information of the reserved resource may include time domain information and frequency domain information of the reserved resource. The second terminal device can determine the position of the reserved resource by obtaining the time domain information and/or the frequency domain information of the reserved resource, so that the first information can be correctly received in the reserved resource. The information of the reserved resources may comprise information of a first reserved resource (in time order) of the plurality of reserved resources, if the reserved resources are periodic resources. That is, the information of the reserved resource may include only the time domain information and/or the frequency domain information of the first reserved resource, and the time domain information of the other reserved resources except the first reserved resource among the plurality of reserved resources may be embodied by the number of reservations. It is understood for this case that the information of reserved resources indicates a reserved resource (or resources), and the reserved resource is reserved a plurality of times.
Alternatively, if the reserved resources are periodic resources, the information of the reserved resources may also include time domain information and/or frequency domain information of a plurality of reserved resources. It is still understood for this case that a reserved resource (or, a reserved resource) is reserved a plurality of times, but the information of the reserved resource includes time domain information and/or frequency domain information of the reserved resource each time. For example, the time domain information of the reserved resources may include time lengths of a plurality of reserved resources, and the like. For example, the frequency domain information of the reserved resources may include frequency domain information of a plurality of reserved resources.
If the reserved resource is an aperiodic resource, the information of the reserved resource may include time domain information and/or frequency domain information of all sub-resources included in the reserved resource. For example, the time domain information of the reserved resource may include a time domain length of each sub-resource included in the reserved resource, a time domain starting position of each sub-resource, and the like. For example, the frequency domain information of the reserved resources may include frequency domain information of each sub-resource included in the reserved resources.
The first signaling may be a combination of one or more of SCI, Master Information Block (MIB), System Information Block (SIB), Radio Resource Control (RRC) layer signaling, or Medium Access Control (MAC) layer signaling.
The frequency domain information of the reserved resource may indicate a frequency domain position of the reserved resource, for example, the frequency domain information of the reserved resource includes a frequency domain starting position and a frequency domain bandwidth of the reserved resource, or includes a frequency domain starting position and an end position of the reserved resource, or includes a frequency domain bandwidth and a frequency domain end position of the reserved resource, or the frequency domain information may also include other types of information. Take the frequency domain information of the reserved resources including the frequency domain starting position and the frequency domain bandwidth of the reserved resources as an example. If the reserved resource is a periodic resource, the reserved times of the reserved resource are multiple times, and the frequency domain position of each reserved resource in the plurality of reserved resources is the same, the frequency domain information of the reserved resource only needs to include the frequency domain starting position and the frequency domain bandwidth of the whole plurality of reserved resources, which is equivalent to the fact that the frequency domain information of the reserved resource only includes one frequency domain starting position and one frequency domain bandwidth, and the frequency domain position of each reserved resource in the plurality of reserved resources can be determined by the second terminal device in combination with the resource reservation period.
Or, if the reserved resource is an aperiodic resource, and the number of the sub-resources is greater than 1, and the frequency domain positions of different sub-resources in the plurality of sub-resources are different, the frequency domain information of the reserved resource may include a frequency domain starting position and a frequency domain bandwidth of each sub-resource in the plurality of sub-resources, which is equivalent to that the frequency domain information of the reserved resource includes a plurality of frequency domain starting positions and at least one frequency domain bandwidth.
Alternatively, if the reserved resources are periodic resources, the frequency domain locations of different reserved resources of the plurality of reserved resources are different, but the plurality of reserved resources are frequency hopped according to the first step size, the frequency domain information of the reserved resources may include the frequency domain starting location and the frequency domain bandwidth of the first reserved resource (in time order) of the plurality of reserved resources, and include the first step size.
Alternatively, if the reserved resource is an aperiodic resource, and the number of sub-resources is greater than 1, the frequency domain positions of different sub-resources in the plurality of sub-resources are different, but the plurality of sub-resources are frequency hopped according to the first step size, the frequency domain information of the sub-resources may include the frequency domain starting position and the frequency domain bandwidth of the first sub-resource (in time order) in the plurality of sub-resources, and include the first step size.
In this embodiment, the time domain information of the reserved resource may include a time length occupied by the reserved resource. For example, the time domain information of the reserved resource includes a time domain starting position and a time domain length of the reserved resource, or includes a time domain starting position and a time domain ending position of the reserved resource, or includes a time domain length and a time domain ending position of the reserved resource, or the time domain information may also include other types of information. Optionally, the time domain information of the reserved resource may further indicate a time domain offset, where the time domain offset is a time interval from a time point when the first device sends the first signaling to a starting time point of the reserved resource, or a time interval from a time point when the second device receives the first signaling to a starting time point of the reserved resource. For example, the time domain offset may be a time interval from a time point when the first device finishes transmitting the first signaling to a starting time point of the reserved resource, or may be a time interval from a time point when the first device starts transmitting the first signaling to a starting time point of the reserved resource, or may be a time interval from a time point when the second device receives the first signaling to a starting time point of the reserved resource, or may be a time interval from a time point when the second device starts receiving the first signaling to a starting time point of the reserved resource.
If the reserved resource is a periodic resource and the time domain information of the reserved resource only includes the time length of the first reserved resource, the time domain offset may include a time interval from a time point when the first terminal device has sent the first signaling (or a time point when the second terminal device receives the first signaling) to a time point when the reserved resource is located (or a starting time point of the reserved resource). Or, if the time domain information of the reserved resource includes time lengths of a plurality of reserved resources, the time domain offset may include a time interval from a time point when the first terminal device has sent the first signaling (or a time point when the second terminal device receives the first signaling) to a time point when the first reserved resource is located (or a starting time point of the first reserved resource), and the second terminal device may determine the time domain position of each of the plurality of reserved resources by obtaining the time interval from the time point when the first terminal device has sent the first signaling (or the time point when the second terminal device receives the first signaling) to the time point when the first reserved resource is located (or the starting time point of the first reserved resource).
Whereas, if the reserved resource is an aperiodic resource and the time domain information of the reserved resource includes only the time length of one sub-resource, the time domain offset may include a time interval from a time point when the first terminal device has transmitted the first signaling (or, a time point when the second terminal device receives the first signaling) to a time point when the sub-resource is located (or, a starting time point of the sub-resource). Or, if the time domain information of the reserved resource includes the time lengths of the multiple sub-resources, the time domain offset may include a time interval from a time point when the first terminal device finishes sending the first signaling (or a time point when the second terminal device receives the first signaling) to a time point when the first sub-resource is located (or a starting time point of the first sub-resource), and the second terminal device may determine the time domain position of each of the multiple sub-resources by obtaining the time interval from the time point when the first terminal device finishes sending the first signaling (or the time point when the second terminal device receives the first signaling) to the time point when the first sub-resource of the multiple sub-resources is located (or the starting time point of the first sub-resource).
The unit of the time domain offset may be a slot (slot) or a symbol, or may also be a combination of a slot and a symbol. The unit of the time length occupied by one reserved resource may be a slot or a symbol, or may be a combination of a slot and a symbol. The unit of the plurality of resource reservation periods may be a slot or a symbol, or may be a combination of a slot and a symbol. The symbol according to the embodiment of the present application may be an Orthogonal Frequency Division Multiplexing (OFDM) symbol.
If the reserved resource is a periodic resource, optionally, the time domain information of the reserved resource may further indicate one or any combination of the following: a resource reservation period, a number of reservations of a reserved resource, or a length of time occupied by a reserved resource of the plurality of reserved resources. If a reserved resource is considered to be used for one transmission, the number of times of reservation of the reserved resource can be understood as the number of reserved resources. Wherein the reserved resources are repeated in the time domain at intervals of a resource reservation period. And the reserved times are the times that the reserved resources are repeated in the time domain at intervals of the resource reservation period.
If the time domain information of the reserved resource only indicates the time domain information of the first reserved resource, the time length occupied by the reserved resource is the time length occupied by the first reserved resource. Or, if the time domain information of the reserved resource includes the time domain information of the plurality of reserved resources, if the time length occupied by each reserved resource in the plurality of reserved resources is the same, the time domain information of the reserved resource only needs to include the time length occupied by any reserved resource in the plurality of reserved resources, and if the time lengths occupied by different reserved resources in the plurality of reserved resources are different, the time domain information of the plurality of reserved resources may include the time length occupied by each reserved resource in the plurality of reserved resources.
For example, please refer to fig. 11, which is an example of information indicating a plurality of reserved resources through the first signaling or a parameter of the first signaling. In fig. 11, a function of implementing the first signaling through SCI is taken as an example, for example, the first signaling is SCI 1. The portion marked "\\" in fig. 11 indicates reserved resources, and only two reserved resources are shown in fig. 11, taking as an example that the reserved resources are periodic resources. K in fig. 11 represents a time domain offset, where K is a time interval from a time when the first terminal device finishes sending the first signaling (or a time when the second terminal device receives the first signaling) to a time when a first reserved resource of the plurality of reserved resources is located. D denotes the length of time occupied by one reserved resource, and fig. 11 is an example in which the lengths of time occupied by different reserved resources are the same. P denotes a resource reservation period.
In the embodiment of the present application, the first signaling may not be used for scheduling other information, or the first signaling may also be used for scheduling the second information. The second information may include one or any combination of the following: traffic data, control information, or feedback information. For example, the second information includes only service data (which may be referred to as second service data), or the second information includes only control information, or the second information includes only feedback information, or the second information includes only second service data and control information, or the second information includes only control information and feedback information, or the second information includes only second service data and feedback information, or the second information includes second service data, control information and feedback information. The first signaling may also indicate a time domain position or a frequency domain position of the second information, or indicate a time domain position and a frequency domain position of the second information, if the first signaling is also used for scheduling the second information. By sending the first signaling, the information of the reserved resource can be indicated, and the second information can also be scheduled, so that the reservation of the resource and the scheduling of the second information are not required to be realized through different signaling, and the signaling overhead is saved. For example, in fig. 11, a portion where "/" is drawn indicates information that is currently scheduled, that is, information scheduled by the first signaling.
The second information and the first information may be the same type of information, for example, the first information and the second information are both service data, or the first information and the second information are both feedback information. Alternatively, the first information and the second information may be different types of information, for example, the first information is feedback information, the second information is service data, or the first information is service data, and the second information is control information.
In addition, if the first information and the second information are the same type of information, the contents of the first information and the second information may be the same, for example, the first information and the second information are both service data, and the first information and the second information are the same service data (the first service data and the second service data are the same service data). In this case, it can be understood that, in addition to the second service data being currently scheduled, the first terminal device also reserves a plurality of reserved resources for the second service data because the second service data requires at least one transmission. Or, if the first information and the second information are the same type of information, the contents of the first information and the second information may also be different, for example, the first information and the second information are both service data, the first information is, for example, first service data, the second information is second service data, and the first service data and the second service data are different; alternatively, for example, the first information and the second information are both control information, the first information is, for example, first control information, the second information is second control information, and the first control information and the second control information are different. In this case, it may be considered that the first terminal device may determine the reserved resource for other traffic data (first traffic data) to be transmitted later, in addition to scheduling the second traffic data. If the first information and the second information are both control information, the first signaling is, for example, SCI, and the second signaling is, for example, also SCI, which corresponds to that the reserved resources are resources for transmitting the control information. It can be seen that the reserved resource in the embodiment of the present application may be used to send service data that is the same as currently scheduled service data (second service data), or may also be used to send service data that is different from the second service data, and the manner of reserving the resource is flexible. If the reserved resource is used for sending service data different from the second service data, the size of the reserved resource may be the same as or different from the size of the resource occupied by the second service data, but in the embodiment of the present application, the time domain information and/or the frequency domain information of the reserved resource may be indicated through the first signaling, and the second terminal device can specify the position of the reserved resource no matter whether the size of the reserved resource is the same as or different from the size of the resource occupied by the second service data, so that the corresponding service data can be correctly received in the reserved resource. Therefore, the resource reservation mode provided by the embodiment of the application is flexible.
The reserved resources may be used for transmitting the first information and in addition the first resources for transmitting the second information. For example, the first signaling is SCI, the first signaling indicates a reserved resource, and in addition, the first signaling also schedules second service data, and then the second service data is sent through the first resource, and in addition, the first terminal device also sends the second signaling, and the second signaling is used for scheduling the first service data, and then the first service data is sent through the reserved resource; or, the first signaling is SCI, the first signaling indicates the reserved resource, the first signaling carries the second control information, the second control information is sent through the first resource (or the first signaling is sent through the first resource), in addition, the first terminal device also sends the second signaling, the second signaling carries the first control information, and the first control information is sent through the reserved resource. Then, the reserved resource and the first resource may have an association relationship.
The reserved resource and the first resource have an association relationship, which may include: the size of the reserved resource has an association relation with the size of the first resource, or the first position of the reserved resource has an association relation with the second position of the first resource, or the size of the reserved resource has an association relation with the size of the first resource, and the first position of the reserved resource has an association relation with the second position of the first resource. The first position refers to a time-frequency position of the reserved resource or a position of the reserved resource in the resource pool, and the second position refers to a time-frequency position of the first resource or a position of the first resource in the resource pool.
As a first possible implementation manner that the reserved resource and the first resource have an association relationship, the size of the reserved resource is the same as that of the first resource, the relative time domain position of the reserved resource is the same as that of the first resource, and the frequency domain position of the reserved resource is the same as that of the first resource. The relative time domain position of the reserved resource is the position of the time domain position of the reserved resource in a time unit, and the relative time domain position of the first resource is the position of the time domain position of the first resource in the time unit, for example, a time slot. The relative positions of the reserved resources and the first resources are the same, and the second terminal equipment only needs to detect in the same frequency domain position, so that the difficulty of detecting the second terminal equipment can be reduced.
For example, referring to fig. 12A, if the reserved resource is located in slot 3, the relative time domain location of the reserved resource refers to the location of the reserved resource in slot 3, for example, if the reserved resource is located in the 4 th symbol of slot 3, the relative time domain location of the reserved resource refers to the 4 th symbol. The box in fig. 12A where "/" is drawn indicates the location of the reserved resource. For example, if the first resource is located in slot 0, the relative time domain position of the first resource refers to the position of the first resource in slot 0, for example, if the first resource is located in the 4 th symbol of slot 0, the relative time domain position of the reserved resource refers to the 4 th symbol. The box in FIG. 12A, in which "\\" is drawn, represents the location of the first resource. In this case, the relative time-domain position of the reserved resource is the same as the relative time-domain position of the first resource. In addition, the frequency domain position of the reserved resource is also the same as the frequency domain position of the first resource.
For example, the first information is first service data, the second information is second service data, and the first service data and the second service data have the same size, this may be considered. Since the size of the first service data is the same as that of the second service data, the size of the required resource can be the same, so that the reserved resource can be the same as that of the first resource, and more resources are not required to be reserved. Moreover, the relative time domain position of the reserved resource is the same as the first resource, and the frequency domain position of the reserved resource can also be the same as the first resource, so that the second terminal device can determine the position of the reserved resource more conveniently, and the implementation of the second terminal device can be simplified.
Or, for example, the first information is first service data, the second information is second service data, and the sizes of the first service data and the second service data are different, which may also be considered to be adopted to simplify the resource reservation mechanism. Then, since the sizes of the first service data and the second service data are different, if the same-sized resource is used for transmission, it is necessary to consider adjusting a Modulation and Coding Scheme (MCS) of the first service data to be suitable for the resource. For example, if the size of the first service data is larger than that of the second service data, the MCS corresponding to the first service data may be made larger than that corresponding to the second service data, so that more bits (bits) may be transmitted with the same resource. Or, if the size of the first service data is smaller than that of the second service data, the MCS corresponding to the first service data may be smaller than that corresponding to the second service data, so that fewer bits are transmitted using the same resource, which is beneficial to improving the transmission success rate. If the MCS of the first service data is different from the MCS of the second service data, the first signaling or the second signaling may also carry third information, where the third information may be the MCS of the first service data, and the second terminal device may directly obtain the MCS of the first service data according to the first signaling or the second signaling; or, the third information may also be a difference between the MCS of the second service data and the MCS of the first service data, so that the second terminal device obtains the MCS of the second service data according to the first signaling, and then determines the MCS of the first service data according to the third information.
Or, if the first information is the first control information and the second information is the second control information, the size of the control information is relatively stable and is not affected by the size of the service data, so that the size of the reserved resource can be the same as that of the first resource, and more resources do not need to be reserved. In this case, since the relative positions of the reserved resources and the first resources are the same, blind detection may not be needed when the second terminal device receives the first signaling, which is beneficial to reducing power consumption of the second terminal device.
In addition, if the first signaling is successfully sent, it indicates that the first resource corresponding to the first signaling does not conflict, so that the control information can be continuously transmitted in the reserved resource having an association relationship with the first resource, and the probability of resource conflict is reduced.
As a second possible implementation manner that the reserved resource and the first resource have an association relationship, the size of the reserved resource and the first resource are the same, and: the relative time domain position of the reserved resource has a first deviation from the relative time domain position of the first resource, or the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource, or the relative time domain position of the reserved resource has a first deviation from the relative time domain position of the first resource, so that the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource. In this way, the reserved resources are allowed to have a certain offset from the first resources. For example, in the time unit where the reserved resource is located, the position completely the same as the relative position of the reserved resource is occupied by other resources, so that the relative time domain position and/or frequency domain position of the reserved resource has a certain offset with respect to the first resource, thus not only completing resource reservation, but also having an association relationship between the reserved resource and the first resource, which is convenient for the second terminal device to determine the position of the reserved resource.
For example, referring to fig. 12B, if the reserved resource is located in slot 3, the relative time domain position of the reserved resource refers to the position of the reserved resource in slot 3, for example, if the reserved resource is located in the 4 th symbol of slot 3, the relative time domain position of the reserved resource refers to the 4 th symbol. The box in fig. 12B where "/" is drawn indicates the location of the reserved resource. For example, if the first resource is located in slot 0, the relative time domain position of the first resource refers to the position of the first resource in slot 0, for example, if the first resource is located in the 3 rd symbol of slot 0, the relative time domain position of the first resource refers to the 3 rd symbol. The box in FIG. 12B, in which "\" is drawn, represents the location of the first resource. In this case, there is a first deviation between the relative time domain position of the reserved resource and the relative time domain position of the first resource, but fig. 12B exemplifies that the frequency domain position of the reserved resource and the frequency domain position of the first resource are the same.
For example, the first information is first service data, the second information is second service data, and the first service data and the second service data have the same size, this may be considered. Since the size of the first service data is the same as that of the second service data, the size of the required resource can be the same, so that the reserved resource can be the same as that of the first resource, and more resources are not required to be reserved.
Or, for example, the first information is first service data, the second information is second service data, and the sizes of the first service data and the second service data are different, which may also be considered to be adopted to simplify the resource reservation mechanism. Similarly, since the sizes of the first service data and the second service data are different, if the same size of resources are used for transmission, the MCS of the first service data needs to be adjusted to be suitable for the resources, and the adjustment method can refer to the foregoing description. If the MCS of the first service data is different from the MCS of the second service data, the first signaling or the second signaling may also carry third information, where the third information may be the MCS of the first service data, and the second terminal device may directly obtain the MCS of the first service data according to the first signaling or the second signaling; or, the third information may also be a difference between the MCS of the second service data and the MCS of the first service data, so that the second terminal device obtains the MCS of the second service data according to the first signaling, and then determines the MCS of the first service data according to the third information.
As a third possible implementation manner that the reserved resource and the first resource have an association relationship, the first resource and the second resource are different in size, and: the relative time domain position of the reserved resource has a first deviation from the relative time domain position of the first resource, or the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource, or the relative time domain position of the reserved resource has a first deviation from the relative time domain position of the first resource, and the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource. Wherein, the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource, for example, the center frequency of the reserved resource has a second deviation from the center frequency of the first resource.
For example, if the first information is first service data, the second information is second service data, and the sizes of the first service data and the second service data are different, the size of the resource may be considered to be adjusted, so that the size of the resource is more suitable for the size of the service data carried. For example, if the size of the first information is larger than the size of the second information, the size of the reserved resources may be larger than the size of the first resources, or if the size of the first information is smaller than the size of the second information, the size of the reserved resources may be smaller than the size of the first resources. Therefore, the transmission of the service data can be completed, and the waste of resources can be avoided.
The second location of the first resource may comprise the first location of the reserved resource if the size of the reserved resource is smaller than the size of the first resource. Referring to fig. 12C, for example, the first resource is located at the 3 rd symbol and the 4 th symbol of the slot 0 and at the 7 th subcarrier and the 8 th subcarrier in the frequency domain. The box in FIG. 12C, in which "\" is drawn, represents the location of the first resource. For example, the reserved resource is located at the 3 rd symbol of slot 3 and at the 8 th subcarrier in the frequency domain. The box in fig. 12C where "/" is drawn indicates the location of the reserved resource. It can be seen that, from the relative position, the second position of the first resource (the time-frequency resource formed by the 3 rd symbol and the 4 th symbol, and the 7 th subcarrier and the 8 th subcarrier in the frequency domain) is the first position including the reserved resource (the time-frequency resource formed by the 3 rd symbol and the 8 th subcarrier in the frequency domain). If the first signaling is successfully sent, it indicates that the first resource corresponding to the first signaling does not conflict, so that the control information can be continuously transmitted in the reserved resource located in the position corresponding to the first resource, and the probability of resource conflict is reduced. Wherein, if the size of the reserved resource is smaller than the size of the first resource, the first location of the reserved resource overlaps with which regions of the first location of the first resource, which may be specified by a protocol or configured by the first terminal device.
Alternatively, if the size of the reserved resource is greater than the size of the first resource, then the first location of the reserved resource may comprise the second location of the first resource. Referring to fig. 12D, for example, the first resource is located at the 3 rd symbol of slot 0 and at the 8 th subcarrier in the frequency domain. The box in FIG. 12D in which "\" is drawn represents the location of the first resource. For example, the reserved resources are located at the 3 rd symbol of the slot 3 and at the 6 th, 7 th and 8 th subcarriers in the frequency domain. The box in fig. 12D in which "/" is drawn indicates the location of the reserved resource. As can be seen from the relative position, the first position of the reserved resource (the 3 rd symbol, and the time-frequency resource formed by the 6 th subcarrier, the 7 th subcarrier and the 8 th subcarrier in the frequency domain) is the second position including the first resource (the time-frequency resource formed by the 3 rd symbol and the 8 th subcarrier in the frequency domain). Wherein, if the size of the reserved resource is larger than the size of the first resource, the first location of the reserved resource comprises which regions in addition to the second location of the first resource, may be specified by a protocol, or may be configured by the first terminal device. For example, the first terminal device may determine whether there are regions contiguous to the second location of the first resource in the time domain and/or in the frequency domain, and whether an overall region of the second location of the first resource and the regions is sufficient to accommodate the reserved resource, and if the overall region of the first location of the first resource and the regions is sufficient to accommodate the reserved resource, the first terminal device may determine the overall region of the first location of the first resource and the regions as the first location of the reserved resource. And the position occupied by the reserved resource is continuous with the second position of the first resource in the time domain and/or the frequency domain, so that the second terminal equipment can detect the second information conveniently. Alternatively, if the total area formed by the second position of the first resource and the areas is not enough to accommodate the reserved resource, the first terminal device may choose not to set the reserved resource, or the first terminal device may continue to determine an area discontinuous in the time domain and/or the frequency domain from the second position of the first resource, and choose a sufficient area and the second position of the first resource as the first position of the reserved resource.
In the foregoing, it is mentioned that the first deviation, i.e. there may be a first deviation between the relative time domain position of the reserved resources and the relative time domain position of the first resources. Then, the first signaling or the second signaling may also carry the first offset, so that the second terminal device may determine the relative time domain position of the reserved resource according to the first offset and the relative time domain position of the first resource. Likewise, a second deviation is mentioned in the foregoing, i.e. there may be a second deviation between the frequency domain position of the reserved resource and the frequency domain position of the first resource. Then, the first signaling or the second signaling may also carry a second offset, so that the second terminal device may determine the frequency domain location of the reserved resource according to the second offset and the relative time domain location of the first resource.
The first signaling or the second signaling may also indicate the size of the reserved resources if the size of the reserved resources is different from the size of the first resources. For example, the first signaling or the second signaling also carries fourth information, where the fourth information is a ratio of the size of the reserved resource to the size of the first resource, and the ratio may also be referred to as a scaling factor. And the second terminal equipment can determine the size of the first resource according to the first signaling, so that the size of the reserved resource can be determined according to the size of the first resource and the fourth information. Alternatively, the fourth information may not be a scaling factor but directly the size of the reserved resource, which is more direct.
As a fourth possible implementation manner that the reserved resource and the first resource have an association relationship, the first information is first control information, the reserved resource is used for sending a first signaling, the second information is second control information, the first resource is used for sending a second signaling, the second signaling also schedules second service data, the second service data is sent through the second resource, for example, then, the reserved resource may be selected from third resources, a fourth position of the third resource has an association relationship with a third position of the second resource, where the third position is a position of the second resource in the resource pool, and the fourth position is a position of the third resource in the resource pool. For example, the frequency domain location of the third resource is the same as the frequency domain location of the second resource, and the relative location of the third resource in the time unit is the same as the relative location of the second resource in the time unit. The frequency domain position may refer to a point or a frequency domain range. For example, the frequency domain location of the third resource may be a point, or the third resource occupies a certain bandwidth in the frequency domain, and then the frequency domain location of the third resource is the frequency domain range. The reserved resources may be the same size as the first resources or may be different.
Referring to FIG. 12E, the first resource is part of the drawing "\" in FIG. 12E, the second resource is part of the drawing "/" in FIG. 12E, and the second resource includes the first resource. Then, the reserved resource can be selected from the third resource, which is a blank portion shown by a dotted line box in fig. 12E, and it can be seen that the size of the third resource is the same as the size of the second resource, and the relative position of the third resource in the time unit is the same as the relative position of the second resource in the time unit. For example, the portion with the horizontal line represents the reserved resource, and the reserved resource is located within the third resource. Fig. 12E exemplifies that the reserved resource has the same size as the first resource. The second service data occupies the second resource, which is scheduled in the first signaling, and the other terminal devices can avoid the second resource by monitoring the first signaling. Then, the position of the reserved resource is also located in the position of the second resource (the third resource is a resource whose relative position in the resource pool is the same as the relative position of the second resource in the resource pool), so that the probability of resource conflict can be reduced, and the selection range of the reserved resource is increased to some extent, which is more flexible. For the second terminal device, the first information can be detected in the third resource, and the range of detection is smaller.
If the first signaling is also used for scheduling the second service data, the first signaling or the parameter of the first signaling may further indicate whether there is currently scheduling of other information, and at this time, the parameter of the first signaling or the first signaling may indicate that there is currently scheduling of other information. If the first signaling is only used for reserved resources and not used for scheduling other information (that is, the first signaling does not schedule any information), the parameter of the first signaling or the first signaling may also indicate whether there is currently scheduling of other information, and at this time, the parameter of the first signaling or the first signaling may indicate that there is currently scheduling of no other information. Alternatively, if the first signaling is only used for reserved resources and not for scheduling other information, neither the first signaling nor the parameters of the first signaling may indicate whether there is currently scheduling of other information.
As an optional implementation manner, if the first signaling is also used for scheduling the second service data, the time domain information and/or the frequency domain information of the reserved resource indicated by the parameter of the first signaling or the first signaling may include one or any combination of the following: the reserved resource has frequency hopping or no frequency hopping relative to the resource occupied by the second service data, the position of the reserved resource has an offset or no offset relative to the position of the resource occupied by the second service data, or the size of the reserved resource has a scaling factor or no change relative to the size of the resource occupied by the second service data. That is, if the first signaling schedules the second service data, the first signaling may indicate information of a resource occupied by the second service data, for example, may indicate at least one of a time domain position or a frequency domain position of the resource occupied by the second service data, and the first signaling may also indirectly indicate the reserved resource by indicating a relationship between the reserved resource and the resource occupied by the second service data. The second terminal device can determine the reserved resource according to the resource occupied by the second service data indicated by the first signaling and the relationship between the reserved resource and the resource occupied by the second service data. Of course, if the first signaling is also used for scheduling the second service data, the parameter of the first signaling or the first signaling may also directly indicate the time domain information and/or the frequency domain information of the reserved resource, and does not need to indicate the relationship between the reserved resource and the resource occupied by the second service data, which is not limited specifically.
If the first signaling is also used for scheduling the second service data, for example, a resource occupied by the second service data is referred to as a second resource, a parameter of the first signaling or the first signaling may indicate whether the reserved resource hops frequency relative to the second resource, and correspondingly, may also indicate whether the position of the reserved resource has an offset relative to the position of the resource occupied by the second service data or does not change, where the offset at this time may be a frequency domain offset. For example, if the frequency domain offset of the reserved resource with respect to the second resource is not equal to 0, the first signaling or the parameter of the first signaling may indicate that the reserved resource has frequency hopping with respect to the second resource, and may further indicate the size of the frequency domain offset (or referred to as the frequency hopping amount); alternatively, the first signaling or a parameter of the first signaling may indicate that the reserved resources are not frequency hopped with respect to the second resources if the frequency domain offset of the reserved resources with respect to the second resources is 0. If the frequency domain position of each reserved resource (or sub-resource) in the plurality of reserved resources (or sub-resources) is the same, the parameter of the first signaling or the first signaling only needs to indicate whether one reserved resource (or sub-resource) is subjected to frequency hopping relative to the second resource; and if the frequency domain locations of different reserved resources (or sub-resources) of the plurality of reserved resources (or sub-resources) are different, the parameter of the first signaling or the first signaling may indicate whether each reserved resource (or sub-resource) of the plurality of reserved resources (or sub-resources) hops relative to the second resource. The first signaling or the parameter of the first signaling may indicate whether the reserved resource (or the sub-resource) is frequency hopping or not frequency hopping with respect to the second resource, and if the reserved resource (or the sub-resource) is frequency hopping with respect to the second resource, the specific frequency hopping amount, whether the frequency hopping is to high frequency or low frequency, and the like may be configured in advance to each terminal device by the network device, or specified by a protocol, or obtained by formula calculation or table lookup, or may also be indicated by the first signaling or the parameter of the first signaling.
For example, the first signaling indicates that the reserved resource (or sub-resource) is frequency hopped with respect to the second resource, and the protocol specifies that the specific hopping amount is 1 sub-carrier and that it is frequency hopped to high frequencies. After receiving the first signaling, the second terminal device may determine the frequency domain location of the second resource according to the indication of the first signaling, and then determine that the reserved resource (or sub-resource) is shifted by one subcarrier at a high frequency with respect to the second resource according to the indication of the first signaling and the specification of the protocol, which determines the frequency domain location of the reserved resource (or sub-resource). At this time, for example, the frequency domain positions of the plurality of reserved resources (or, sub-resources) are the same.
If the first signaling is also used for scheduling the second traffic data, e.g. the resource occupied by the second traffic data is referred to as the second resource, the parameter of the first signaling or the first signaling may also be used to indicate whether the size of the reserved resource changes relative to the size of the second resource. For example, if the reserved resource and the second resource are the same size, the first signaling or the parameter of the first signaling may indicate that the reserved resource does not change relative to the size of the second resource; alternatively, if the reserved resource and the second resource are of different sizes, the first signaling or a parameter of the first signaling may indicate that there is a change in the reserved resource with respect to the size of the second resource, and may further indicate a scaling factor. In this regard, the parameter of the first signaling or the first signaling indicates whether the size of the reserved resource is changed relative to the size of the second resource, which can also be described as the parameter of the first signaling or the first signaling indicates that the size of the reserved resource has a scaling factor or is not changed relative to the size of the second resource. Wherein, if the size of each reserved resource (or sub-resource) in the plurality of reserved resources (or sub-resources) is the same, the parameter of the first signaling or the first signaling only needs to indicate whether the size of one reserved resource (or sub-resource) is changed relative to the size of the second resource; whereas if the size of different reserved resources (or sub-resources) of the plurality of reserved resources (or sub-resources) is different, the parameter of the first signaling or the first signaling may indicate whether there is a change in the size of each reserved resource (or sub-resource) of the plurality of reserved resources (or sub-resources) relative to the size of the second resource. The parameter of the first signaling or the first signaling may indicate whether the size of the reserved resource (or the sub-resource) is changed or not with respect to the size of the second resource, and if the size of the reserved resource (or the sub-resource) is changed with respect to the size of the second resource, specific variation and variation manner (for example, time domain variation or frequency domain variation, and variation direction (for example, high frequency variation or low frequency variation) may be configured in advance to each terminal device by the network device, or specified by a protocol, or may be carried in the first signaling or the parameter of the first signaling. If only the time domain is changed, the frequency domain scaling factor can be configured to be 0, or the frequency domain scaling factor is not configured; alternatively, only the frequency domain is changed, the time domain scaling factor may be configured to be 0, or the time domain scaling factor may not be configured. In addition, the configured time domain scaling factor may be an absolute variation indicating that the reserved resource (or sub-resource) is shifted with respect to the time domain position of the second resource, or may also be an absolute variation indicating that the position of the reserved resource (or sub-resource) in the time unit is shifted with respect to the position of the second resource in the time unit. For example, the scaling factor indicates that the reserved resource (or, sub-resource) is shifted backward by one time domain symbol with respect to the time domain position of the second resource, which may mean that the reserved resource (or, sub-resource) is shifted backward by one time domain symbol with respect to the time domain position of the second resource, or, the second resource is located in time unit 1, one reserved resource is located in time unit 2, which means that the reserved resource (or, sub-resource) is shifted backward by one time domain symbol with respect to the time domain position of the second resource in time unit 1, which means that the reserved resource (or, sub-resource) is located in time unit 2. The time unit is, for example, a time slot or a time domain symbol.
If the first signaling is also used for scheduling the second traffic data, for example, the resource occupied by the second traffic data is referred to as the second resource, the first signaling or the parameter of the first signaling may indicate that the position of the reserved resource has an offset or does not change with respect to the position of the second resource, where the offset may include a time domain offset, or a frequency domain offset, or both a time domain offset and a frequency domain offset. For example, if the time domain location of the reserved resource and the second resource are the same (which is referred to herein as relative time domain location, and may be understood as the location of the resource in the resource pool, or the location of the resource in a time unit, such as a time slot), the parameter of the first signaling or the first signaling may indicate that the time domain location of the reserved resource is unchanged relative to the time domain location of the second resource; alternatively, if the time domain location of the reserved resource and the time domain location of the second resource are different (also referred to herein as relative time domain locations), the first signaling or a parameter of the first signaling may indicate the reserved resource has a time domain offset with respect to the size of the second resource, and may further indicate the time domain offset. The same is true for the frequency domain location, e.g., if the frequency domain location of the reserved resource and the second resource are the same, the first signaling or the parameter of the first signaling may indicate that the location of the reserved resource is unchanged with respect to the location of the second resource; alternatively, if the frequency domain location of the reserved resource and the frequency domain location of the second resource are different, the first signaling or the parameter of the first signaling may indicate that the reserved resource has a frequency domain offset with respect to the size of the second resource, and may further indicate the frequency domain offset. If the time domain position of each reserved resource (or sub-resource) in the plurality of reserved resources (or sub-resources) is the same, the parameter of the first signaling or the first signaling only needs to indicate that the time domain position of one reserved resource (or sub-resource) has an offset or no offset relative to the time domain position of the second resource; whereas, if the time domain location of a different reserved resource (or sub-resource) of the plurality of reserved resources (or sub-resources) is different, the parameter of the first signaling or the first signaling may indicate that the time domain location of each reserved resource (or sub-resource) of the plurality of reserved resources (or sub-resources) is offset or not offset with respect to the time domain location of the second resource. If the frequency domain position of each reserved resource (or sub-resource) in the plurality of reserved resources (or sub-resources) is the same, the parameter of the first signaling or the first signaling only needs to indicate that the frequency domain position of one reserved resource (or sub-resource) has an offset or no offset relative to the frequency domain position of the second resource; whereas, if the frequency domain location of different reserved resources (or sub-resources) of the plurality of reserved resources (or sub-resources) is different, the parameter of the first signaling or the first signaling may indicate that the frequency domain location of each reserved resource (or sub-resource) of the plurality of reserved resources (or sub-resources) is offset or not changed with respect to the frequency domain location of the second resource. In addition, if the parameter of the first signaling or the first signaling may indicate that the reserved resource (or the sub-resource) has a frequency domain offset with respect to the size of the second resource, a specific offset direction, for example, whether the resource is offset towards a high frequency or a low frequency, may be configured in advance to each terminal device by the network device, or may be specified by a protocol, or may be carried in the parameter of the first signaling or the first signaling together. Similarly, if the parameter of the first signaling or the first signaling may indicate that the reserved resource (or the sub-resource) has a time domain offset with respect to the size of the second resource, a specific offset direction, for example, a forward offset or a backward offset, may be configured in advance to each terminal device by the network device, or be specified by a protocol, or may be carried in the parameter of the first signaling or the first signaling together.
For example, the parameter of the first signaling may indicate that the time domain position of the reserved resource (or, the sub-resource) has a time domain offset relative to the time domain position of the second resource, and the network device configures the time domain offset to be 1 symbol, and the time domain is changed backwards in time sequence. In addition, the parameter of the first signaling indicates that the reserved resource (or, sub-resource) has frequency hopping with respect to the second resource, and further indicates that the size of the frequency domain offset is 1 sub-carrier, and the frequency domain is changed to a high frequency. After the second terminal device receives the first signaling, the time domain position and the frequency domain position of the second resource may be determined according to the indication of the parameter of the first signaling, and then according to the indication of the parameter of the first signaling and the pre-configuration of the network device, the time domain position of the reserved resource (or sub-resource) may be determined to be shifted backward by one time domain symbol with respect to the time domain position of the second resource, and be shifted high-frequency by one subcarrier with respect to the frequency domain position of the second resource, where, of course, the reserved resource (or sub-resource) may be one of a plurality of reserved resources (or sub-resources).
For another example, please refer to fig. 13, which is an example of information indicating reserved resources through the first signaling. In fig. 13, a function of implementing the first signaling through SCI is taken as an example, for example, the first signaling is SCI 1. The portion marked "\\" in fig. 11 indicates reserved resources, and only two reserved resources are shown in fig. 13, taking as an example that the reserved resources are periodic resources. K in fig. 13 represents a time domain offset, where K is a time interval from a time when the first terminal device finishes sending the first signaling (or a time when the second terminal device receives the first signaling) to a time when a first reserved resource of the plurality of reserved resources is located. D denotes the length of time occupied by one reserved resource, and fig. 13 exemplifies that the lengths of time occupied by different reserved resources are the same. P denotes a plurality of resource reservation periods. In addition, the first signaling further indicates that the size of the reserved resource is changed relative to the size of the second resource and indicates a scaling factor, the scaling factor indicates that the size of the reserved resource is twice the size of the second resource, the protocol specifies that the frequency domain change mode extends towards a high frequency direction on a frequency domain, and the first signaling further indicates that the reserved resource hops towards the high frequency direction, and the hopping amount is one subcarrier. The second terminal device can thus determine the frequency domain position of the reserved resource and determine the time domain position of the reserved resource in the time unit. In addition, the reserved resources can also implement frequency hopping among a plurality of reserved resources in addition to frequency hopping relative to the resources occupied by the currently scheduled information, and refer to the portion marked "\" in fig. 13.
As can be seen from the above description, the parameter of the first signaling or the first signaling may directly indicate the time domain position and/or the frequency domain position of the reserved resource, or may indicate the time domain position and/or the frequency domain position of the reserved resource by indicating the information of the resource occupied by the second service data and indicating the relationship between the resource occupied by the second service data and the reserved resource, which is more flexible.
In order to consider indicating more content to the second terminal device, as an optional implementation, the first signaling or the parameter of the first signaling is further used to indicate one or any combination of the following information: the reserved resources are used for multiple transmissions of a transmission block, the reserved resources are used for single transmission of a plurality of transmission blocks, the reserved resources are used for data initial transmission or data retransmission, or the reserved resources are used for multicast service, broadcast service or unicast service.
The channel corresponding to the reserved resource may include at least one of a data channel, a control channel, or a feedback channel. If each of the plurality of reserved resources (or sub-resources) corresponds to the same channel, the parameter of the first signaling or the first signaling only needs to indicate the one channel, or if different reserved resources (or sub-resources) of the plurality of reserved resources (or sub-resources) correspond to different channels, the parameter of the first signaling or the first signaling may indicate a plurality of channels, or the parameter of the first signaling or the first signaling may indicate a correspondence between the reserved resources (or sub-resources) and the channels. And indicating the information of the channel corresponding to the reserved resource to the second terminal equipment, so that the second terminal equipment is facilitated to receive the corresponding channel in the reserved resource.
If the second terminal device is informed whether the plurality of reserved resources (or sub-resources) are for multiple transmissions of one transport block or for a single transmission of a plurality of transport blocks, it is facilitated for the second terminal device to correctly receive the corresponding transport block at the plurality of reserved resources (or sub-resources). For example, if a plurality of reserved resources (or sub-resources) are used for multiple transmissions of one transport block, the second terminal device may combine the received information after receiving corresponding information from the plurality of reserved resources (or sub-resources) to obtain the transport block.
The first signaling or the parameter of the first signaling may further indicate whether the reserved resources are used for data retransmission or data initial transmission. For example, the first signaling is also used for scheduling second information, for example, second traffic data, and the first information, for example, first traffic data. The first service data is, for example, a retransmission of the second service data, and the first signaling or a parameter of the first signaling may indicate that the reserved resource is for a data retransmission. Or, the first signaling is further used to schedule second information, the second information is, for example, second service data, the first information is, for example, first service data, and the first service data and the second service data are different service data, that is, the first service data is initial transmission data, and then a parameter of the first signaling or the first signaling may indicate that the reserved resource is used for initial transmission of data. In this case, of course, if the reserved resources are periodic resources, the number of times of reservation is greater than 1, and each reserved resource is used to carry the first service data itself, which is equivalent to that the first service data is transmitted through a plurality of reserved resources for a plurality of times, the first service data is data initial transmission for the first reserved resource, but is data retransmission for other reserved resources. Or, if the reserved resource is an aperiodic resource, the reserved resource includes sub-resources whose reservation times is greater than 1, and each sub-resource is used to carry the first service data itself, which is equivalent to that the first service data is transmitted through a plurality of sub-resources for a plurality of times, then the first service data is data initial transmission for the first sub-resource, but is data retransmission for other sub-resources. And indicating data initial transmission or data retransmission, which is beneficial to the second terminal equipment to decode the received service data and other operations. For example, the reserved resource is used for data retransmission, and the second terminal device may perform combining decoding with the first service data received multiple times to obtain a combining gain.
In addition, before each time the first service data is transmitted (i.e. each time the reserved resource is used), the first terminal device may also transmit a second signaling to the second terminal device, where the second signaling is used for scheduling the first service data. It is to be understood that the reserved resources are only reserved and that a reservation does not indicate that it is not necessarily used, and that the first terminal device may schedule a reserved resource by sending a second signaling if it is to use the reserved resource, and the reserved resource scheduled by the second signaling is the reserved resource to be used. Since there may be a plurality of reserved resources (or sub-resources), the first service data may be transmitted at least once, if the first service data is initial transmission data and the plurality of reserved resources (or sub-resources) are used for single transmission of a plurality of transport blocks, for example, the transport blocks and the reserved resources (or sub-resources) are in a one-to-one correspondence relationship, each reserved resource (or sub-resource) may be considered to be used for transmitting the first service data once, for different reserved resources (or sub-resources), for example, one reserved resource (or sub-resource) is used for retransmitting the first service data for the first time, the retransmission sequence number is 1, another reserved resource (or sub-resource) is used for retransmitting the first service data for the second time, the retransmission sequence number is 2. For the convenience of distinction, the second signaling may carry a corresponding retransmission sequence number, and a second signaling may be used to schedule a reserved resource (or sub-resource), so that the second signaling may carry the retransmission sequence number corresponding to the reserved resource (or sub-resource).
The first signaling or the parameter of the first signaling may further indicate that the reserved resource is information for a multicast service, a broadcast service, or a unicast service. Generally, if there are a plurality of reserved resources (or sub-resources), the reserved resources (or sub-resources) should be uniformly used for multicast service, broadcast service, or unicast service, so that it is only necessary to uniformly indicate that the reserved resources are used for multicast service, broadcast service, or unicast service; but it is also possible that different reserved resources (or sub-resources) of the plurality of reserved resources (or sub-resources) are used for different types of traffic, it is also possible to indicate that each reserved resource (or sub-resource) of the plurality of reserved resources (or sub-resources) is used for multicast traffic, broadcast traffic or unicast traffic, respectively. Therefore, the second terminal equipment can be informed that the information carried by the reserved resources is sent to one terminal equipment or a plurality of terminal equipments, and the information informed to the second terminal equipment can be richer.
The first signaling indicates the information of the reserved resources, and one way may be that the first signaling includes a first field, and the state of the first field is used to indicate the information of the reserved resources.
The parameter of the first signaling indicates information of the reserved resource, for example, the parameter of the first signaling may include one or any combination of the following: a resource carrying the first signaling, a size of the first signaling, or an RNTI for scrambling a CRC of the first signaling.
Equivalently, the above four ways can be used to indicate the information of the reserved resources, and the information of the reserved resources can include any combination of one or more of the following: the method comprises the steps of reserving time domain information of resources, reserving frequency domain information of the resources and a channel corresponding to the reserved resources, wherein the reserved resources are used for multiple transmissions of one transmission block, the reserved resources are used for single transmissions of a plurality of transmission blocks, the reserved resources are used for data initial transmission or data retransmission, and the reserved resources are used for multicast services, broadcast services or unicast services. When the first terminal device indicates the information of the reserved resource, any combination of one or more of the above four manners may be adopted, and it may be understood that the first terminal device may indicate the information of the reserved resource by using the first signaling or a parameter of the first signaling, or may indicate the information of the reserved resource by using the first signaling and the parameter of the first signaling. For example, information indicating reserved resources only by a state of a first field included in the first signaling; or, only the information of the reserved resource is indicated by the resource carrying the first signaling; or, only the information of the reserved resource is indicated by the size of the first signaling; or, the information of the reserved resource is indicated only by the RNTI of the CRC for scrambling the first signaling; or, the information of the reserved resource is indicated through the state of the first field included in the first signaling, and the information of the reserved resource is indicated through the resource carrying the first signaling; or, the information of the reserved resource is indicated by the state of the first field included in the first signaling, and the information of the reserved resource is indicated by the size of the first signaling; or, the information of the reserved resource is indicated by a state of a first field included in the first signaling, and the information of the reserved resource is indicated by an RNTI for a CRC which scrambles the first signaling; or, the information of the reserved resource is indicated through the state of the first field included in the first signaling, the information of the reserved resource is indicated through the resource bearing the first signaling, and the information of the reserved resource is indicated through the size of the first signaling; or, the information of the reserved resource is indicated by the state of the first field included in the first signaling, the information of the reserved resource is indicated by the resource carrying the first signaling, and the information of the reserved resource is indicated by the RNTI used for scrambling the CRC of the first signaling; or, the information of the reserved resource is indicated by the resource carrying the first signaling, the information of the reserved resource is indicated by the size of the first signaling, and the information of the reserved resource is indicated by the RNTI of the CRC used for scrambling the first signaling; or, information indicating reserved resources by a state of a first field included by the first signaling, information indicating reserved resources by a size of the first signaling, and information indicating reserved resources by an RNTI of a CRC for scrambling the first signaling are included; or, the information of the reserved resource is indicated by the state of the first field included in the first signaling, the information of the reserved resource is indicated by the resource carrying the first signaling, the information of the reserved resource is indicated by the size of the first signaling, and the information of the reserved resource is indicated by the RNTI used for scrambling the CRC of the first signaling. Alternatively, the first terminal device may include other manners besides at least one manner as above, or may include other manners instead of any manner as above, or the first terminal device may not indicate the information of the reserved resources through the first signaling or the parameter of the first signaling, but indicate the information of the reserved parameters through other manners.
The four modes can be divided into two large categories, an explicit indication mode and an implicit indication mode, which are described below.
1. Explicit indication means.
For example, the information indicating the reserved resources through the state of the first field included in the first signaling may be regarded as an explicit indication.
The first signaling may include a first field, and information of the reserved resources may be indicated by a state of the first field. The first field may occupy one or more bits (bits), and the more the number of bits occupied by the first field, the more detailed information of the indicated reserved resource may be.
The first field may be a field added in the first signaling, dedicated to information indicating reserved resources. Alternatively, the first field may be an existing field in the first signaling, which is equivalent to multiplexing the existing field in the first signaling to indicate the information of the reserved resources. If the first field is an existing field in the first signaling, the first field is, for example, an unused field in the first signaling, and all states of the first field can be used for information indicating reserved resources. Alternatively, if the first field is an existing field in the first signaling, and a partial state of the first field may have been used, the unused state of the first field may be utilized to indicate information of the reserved resources. The state of the first field described herein may refer to a value of the first field, or one value of the first field corresponds to one state.
For example, the first signaling is SCI, the SCI includes a 4-bit resource reservation field, and the 10 states of the resource reservation field are 0001 to 1010 already occupied, which are used to indicate different periods of 1 to 10 slots. Then, the resource reservation field may be used as the first field, and the information of the reserved resource may be indicated by using the five states 1011, 1100, 0000, 1101, and 1110 of the resource reservation field which are not occupied, and in addition, the state 1111 of the resource reservation field may be continued as the reservation, or the state 1111 may also be used to indicate the information of the reserved resource. For example, the interpretation of the various states of SCI can be found in table 2:
TABLE 2
It is introduced that the information of the reserved resources may include a plurality of types, and when the state of the first field is used to indicate the information of the reserved resources, each of the states may be used to indicate one type of information of the reserved resources, and different states may indicate different information of the reserved resources, which is clear. Alternatively, each state may be used to indicate a plurality of kinds of information of the reserved resource, and the number of information indicated by different states may be the same or different, so that different states may indicate different combinations of information of the reserved resource, which may help to save the state of the first field, or may help to improve the utilization rate of the state of the first field. Or, each of the partial states of the first field may indicate one kind of information of the reserved resource, each of the remaining partial states of the first field may indicate a plurality of kinds of information of the reserved resource, and the number of information indicated by different states may be the same or different, which is more flexible.
Take the information indicating the reserved resource by using the five states 1011, 1100, 0000, 1101, and 1110 of the resource reservation field which are not occupied, and continue the state 1111 of the resource reservation field as the reservation as an example. For example, 1011 this state is used to indicate that the resource reservation period is 0.5 slot, 1100 this state is used to indicate that the resource reservation period is 0.2 slot, 0000 this state is used to indicate the number of reservations of the reserved resource, 1101 this state is used to indicate that the reserved resource is for multiple transmissions of a transport block, and 1110 this state is used to indicate that there is no scheduling of other information currently.
Or 1011 the state indicating that the resource reservation period is 0.5 time slot, the time domain offset of the reserved resource is 1 time slot, and the reserved times of the reserved resource is 10 times, 1100 the state indicating that the reserved times of the reserved resource is 10 times, the time length occupied by one of the reserved resources is 0.5 time slot, and the channel corresponding to the reserved resource is PSSCH, 0000 the state indicating that the reserved times of the reserved resource is 8 times, the resource reservation period is 0.2 time slot, the time length occupied by one of the reserved resources is 0.2 time slot, and the reserved resource has frequency hopping with respect to the resource occupied by the currently scheduled information, 1101 the state indicating that the reserved times of the reserved resource is 6 times, the size of the reserved resource has a scaling factor with respect to the size of the resource occupied by the currently scheduled information, and, And the reserved resources are for data retransmission, 1110 this state is used to indicate that the length of time occupied by one of the reserved resources is 0.3 slots, the time domain offset of the reserved resources is 1 slot, and the reserved resources are for unicast traffic.
Of course, the relationship between the above states and the indicated contents is only some examples, and there is no particular limitation on what information of the reserved resources is indicated by which states of the first field, how much information of the reserved resources is indicated by one state of the first field, and the like.
In addition, as described above, the first signaling is SCI and the first field is the resource reservation field, in practical applications, the first signaling may be other signaling, and the first field may be different accordingly. Alternatively, even if the first signaling is SCI, the first field may be other fields in the SCI, which is not limited.
Of course, the explicit indication may include other ways besides the above-mentioned ways, and is not limited in particular.
2. The manner is implicitly indicated.
In bar 1, a display indication mode is described, and an implicit indication mode is described below. The implicit indication may be indicated not by information carried in the first signaling but by another method. For example, the information indicating the reserved resource through the resource carrying the first signaling, the information indicating the reserved resource through the size of the first signaling, and the information indicating the reserved resource through the RNTI of the CRC for scrambling the first signaling may all be regarded as implicit indication. That is, the manner of indicating the information of the reserved resource by the parameter of the first signaling may be regarded as an implicit indication manner.
As a first optional manner, the information of the reserved resources is indicated by the resources carrying the first signaling. The first terminal device may use different resources when transmitting the first signaling, so that different content may be indicated by the different resources. The first signaling uses a certain resource to send the first signaling, and may indicate one kind of information of the reserved resource, or may indicate multiple kinds of information of the reserved resource, and the number of the indicated information of the reserved resource is not limited. For example, if the first terminal device sends the first signaling on resource 1, it indicates that the reserved resource is used for data initial transmission, if the first terminal device sends the first signaling on resource 2, it indicates that the reserved resource is used for data retransmission and the resource reservation period is 0.2 slots, if the first terminal device sends the first signaling on resource 3, it indicates that the resource reservation period is 0.5 slots and the time domain offset of the reserved resource is 1 slot, and so on. The relationship between the resources and the indicated content as described above is only some examples, and there is no particular limitation on what information indicates the reserved resources when the first signaling is transmitted through a certain resource.
The resource carrying the first signaling may be described from the perspective of physical resources, or may be described from the perspective of logical resources. The physical resources may include at least one of time domain resources, frequency domain resources, code domain resources, spatial domain resources, or power domain resources. The frequency domain resource, for example, includes at least one of an index of a Resource Block (RB), a number of RBs, a subchannel index, or an identification of RBs in a subchannel. The time domain resource, for example, includes at least one of a symbol position (including a start symbol or a stop symbol), a number of symbols, a slot position (including a start slot or a stop slot), or a number of slots. The code domain resources, for example, include at least one of a root sequence, a mask, a scrambling code, a cyclic shift, or a comb. The spatial domain resource includes, for example, at least one of a codeword, a stream (stream), a layer (layer), the number of antennas, an antenna port number, or the number of antenna ports. The power domain resources, for example, include at least one of a power value, a power range, a power offset, or a power threshold. For example, two resources are considered to be different if at least one of the time domain resources, frequency domain resources, code domain resources, spatial domain resources, or power domain resources of the two resources are different. For example, the time domain resource, the frequency domain resource, the code domain resource, and the space domain resource of resource 1 and resource 2 are all the same, and the power value, the power range, and the power offset in the power domain resource are all the same, but the power thresholds are different, then resource 1 and resource 2 are considered to be different.
The logical resources, for example, include at least one of a set of search spaces, a set of candidate locations, or a set of control resources. For example, two resources are considered to be different if at least one of the set of search spaces, candidate locations, or the set of control resources are different. For example, if the candidate locations and control resource sets for resource 1 and resource 2 are the same, but the search space sets are different, then resource 1 and resource 2 are considered different.
As a second alternative, the information of the reserved resources may be indicated by the size of the first signaling. For example, different lengths of the first signaling may indicate different content. For example, the length of the first signaling may be divided into a plurality of intervals according to the first threshold, each interval may be used for indicating information of reserved resources, and the information of reserved resources indicated by different intervals may be different. For example, if the length of the first signaling is smaller than the first threshold, the resource reservation period is indicated to be 0.5 time slots; if the length of the first signaling is equal to the first threshold, indicating that the time domain offset of the reserved resource is 2 time slots and the reserved resource is used for data retransmission; if the length of the first signaling is greater than the first threshold, indicating that the size of the reserved resource has a scaling factor relative to the size of the resource occupied by the current scheduling information, the channel corresponding to the reserved resource is PSCCH, and the reserved resource is used for multicast service.
Alternatively, the interval may not be divided, and different contents may be indicated as long as the length of the first signaling is different. For example, the length of the first signaling is a first length, which indicates that the resource reservation period is 0.2 slots and the time domain offset of the reserved resource is 1 slot; the length of the first signaling is a second length, and the resource reservation period is indicated to be 0.5 time slot; the length of the first signaling is a third length, which indicates that the size of the reserved resource is unchanged relative to the size of the resource occupied by the currently scheduled information, and that the reserved resource is for a broadcast service, and so on.
As a third alternative, the information of the reserved resources is indicated by the RNTI used for scrambling the CRC of the first signaling. Then, different RNTIs for scrambling the CRC of the first signaling are different, and different contents can be indicated. For example, the RNTI used for scrambling the CRC of the first signaling is the first RNTI, indicating that the time domain offset of the reserved resource is 1 slot; the RNTI for scrambling the CRC of the first signaling is the second RNTI, indicating that the resource reservation period is 0.2 slots, and so on. The RNTI used for scrambling the CRC of the first signaling may include one or more of the following RNTIs: cell radio network temporary identifier (C-RNTI), temporary cell radio network temporary identifier (TC-RNTI), configured scheduling radio network temporary identifier (CS-RNTI), semi-persistent channel status indicator (semi-persistent channel state information, SP-CSI-RNTI), modulation and coding scheme (modulation and coding scheme, C-RNTI), system information (system information, SI) -RNTI, Random Access (RA) -RNTI, paging (P) -RNTI, Interrupt (INT) -RNTI, Slot Format Indicator (SFI) -RNTI, transmit power control physical shared channel RNTI (TC-uplink shared channel), slot format indicator (slot format indicator, SFI) -RNTI), TPC-PUSCH-RNTI), transmission power control physical uplink control channel RNTI (TPC-PUCCH-RNTI), or transmission power control sounding reference signal RNTI (TPC-SRS-RNTI), and the like.
The three implicit indication manners described above can be applied separately, for example, the first terminal device may indicate the information of the reserved resource by the RNTI used for scrambling the CRC of the first signaling, or indicate the information of the reserved resource by the size of the first signaling. Alternatively, any two or three of the three implicit indications above may be applied in combination. For example, the first terminal device indicates the information of the reserved resource by carrying the resource of the first signaling, the size of the first signaling, and the RNTI used for scrambling the CRC of the first signaling, and then the information of the indicated reserved resource may be different if only one of the three is different. For example, a first terminal device sends a first signaling through resource 1, where the size of the first signaling is a first value, and an RNTI used for scrambling CRC of the first signaling is the first RNTI, which indicates that a resource reservation period is 1 slot and a time domain offset of a reserved resource is 2 slots; or, the first terminal device sends the first signaling through the resource 2, the size of the first signaling is a first value, the RNTI used for scrambling the CRC of the first signaling is the first RNTI, and the resource reservation period is indicated to be 0.5 time slots; or, the first terminal device sends the first signaling through the resource 2, where the size of the first signaling is the second value, the RNTI used for scrambling the CRC of the first signaling is the second RNTI, the time length occupied by one reserved resource in the reserved resources is indicated to be 0.2 time slot, the reserved times of the reserved resources are 10 times, the reserved resources have frequency hopping relative to the resources occupied by the currently scheduled service data, and the reserved resources are used for data retransmission, and so on.
Of course, the implicit indication means may include other means besides the ones described above, and is not limited specifically.
S103, the first terminal device sends the first service data on the reserved resource, and the second terminal device receives the first service data from the first terminal device on the reserved resource, or the first terminal device sends the control information on the reserved resource, and the second terminal device receives the control information from the first terminal device on the reserved resource.
The second terminal device may determine the information of the reserved resource according to the first signaling or the parameter of the first signaling. The information of which way the second terminal device determines the reserved resources at all depends on which way the first terminal device indicates the information of the reserved resources. For example, if the first terminal device indicates the information of the reserved resource through the state of the first field included in the first signaling, the second terminal device determines the information of the reserved resource according to the state of the first field included in the first signaling; or, the first terminal device indicates the information of the reserved resource through the resource carrying the first signaling and the size of the first signaling, and the second terminal device determines the information of the reserved resource according to the resource carrying the first signaling and the size of the first signaling, and so on. The content indicated by the first terminal device, i.e. the content that the second terminal device can determine.
For example, the first terminal device indicates the information of the reserved resource through the state of the first field included in the first signaling, the state of the first field is 1011, and indicates that the resource reservation period is 0.5 time slots, the time domain offset of the reserved resource is 1 time slot, and the number of times of reservation of the reserved resource is 10. Then, after receiving the first signaling, the second terminal device may determine that the resource reservation period is 0.5 time slots, the time domain offset of the reserved resource is 1 time slot, and the number of times of reservation of the reserved resource is 10 times according to the state of the first field being 1011.
Or, the first terminal device indicates the information of the reserved resource by carrying the resource of the first signaling and the size of the first signaling, the resource carrying the first signaling is resource 1, the size of the first signaling is a first value, and the resource reservation period is indicated to be 1 time slot and the time domain offset of the reserved resource is indicated to be 2 time slots. Then the second terminal device receives the first signaling, and according to the resource receiving the first signaling (the second terminal device receives the first signaling in resource 1) and the size of the first signaling being the first value, it can determine that the resource reservation period is 1 slot and the time domain offset of the reserved resource is 2 slots.
The indication mode of the first terminal device and the determination mode of the corresponding second terminal device may be configured by the network device, or determined by negotiation between the first terminal device and the second terminal device, or specified by a protocol.
In this embodiment of the present application, a first terminal device may indicate information of a reserved resource through a first signaling or a parameter of the first signaling, and a second terminal device at a receiving end may obtain the information of the reserved resource, so that first service data or control information may be received through the reserved resource at a correct position. By the method provided by the embodiment of the application, if other information is scheduled at present, the reserved resource can be the same as or different from the period or size of the resource occupied by the currently scheduled information, and as long as the information of the reserved resource is indicated by the first signaling or the parameter of the first signaling, the second terminal device can acquire the position of the reserved resource, so that the flexibility of resource reservation is improved.
Consider again a scenario. After the first terminal device sends the first information through the first resource, the second terminal device may send an Acknowledgement (ACK) to the first terminal device if the first information is successfully received, and may send or not send a Negative Acknowledgement (NACK) to the first terminal device if the first information is not successfully received. For example, in the at least one first resource, information carried by a part of the first resources is the same, and the information may be part of information included in the first information, or it is also possible that information carried by the at least one first resource is the same, and each of the at least one first resource carries the first information. Then, after the first terminal device transmits information (which may be part of the information included in the first information or may be the first information) through one or more first resources therein, if an ACK is received from the second terminal device, it indicates that the information has been successfully transmitted without retransmission. However, if the at least one first resource also includes the first resource reserved for the information, the first terminal device may continue to transmit the information to the second terminal device through the first resources, which is already redundant for the second terminal device, and this also results in a waste of resources.
In view of this, the present application provides a second communication method. In the communication method, the first terminal equipment can timely release reserved resources which are not required to be used continuously, so that the waste of the resources is reduced, and the effective utilization rate of the resources is improved.
Please refer to fig. 14, which is a flowchart of the method. In the following description, the method is applied to the network architecture shown in fig. 9 as an example. In addition, the method may be performed by two communication devices, e.g. a first communication device and a second communication device. The first communication device or the second communication device may be a network device or a communication device capable of supporting the network device to implement the functions required by the method, or may be a terminal device or a communication device capable of supporting the terminal device to implement the functions required by the method, or may be other communication devices such as a system on chip. The implementation manner of the first communication apparatus or the second communication apparatus is not limited, for example, the two communication apparatuses may be implemented in the same form, for example, both implemented in the form of a device, or the two communication apparatuses may also be implemented in different forms, for example, the first communication apparatus is implemented in the form of a device, the second communication apparatus is implemented in the form of a system-on-chip, and so on. The network device is, for example, a base station.
For convenience of introduction, in the following, the method is taken as an example performed by a terminal device and a terminal device, that is, the first communication apparatus is a terminal device (for example, referred to as a first terminal device), and the second communication apparatus is a terminal device (for example, referred to as a second terminal device). Since this embodiment is applied to the network architecture shown in fig. 9 as an example, the first terminal device described below may be the terminal device 1 in the network architecture shown in fig. 9, and the second terminal device described below may be the terminal device 2 in the network architecture shown in fig. 9. In the following, a plurality of second terminal devices may be involved, of which only one is illustrated in fig. 9. Further the network devices described below may be network devices in the network architecture shown in fig. 9.
S141, a first terminal device sends first service data in a first resource, where the first service data includes M data blocks.
The first resource is, for example, a resource reserved by the first terminal device for the first service data.
For example, the first terminal device reserves a plurality of resources for the first service data, the first resource belongs to the plurality of resources, and M is a positive integer. In this embodiment of the application, the resource reservation mechanism introduced in the embodiment shown in fig. 10 may be applied, and then, after reserving a plurality of resources, how the first terminal device informs the terminal device serving as the receiver of the first service data of information of the plurality of resources may refer to the related description of the embodiment shown in fig. 10. Alternatively, the resource reservation mechanism applied in the embodiment of the present application may also be existing, and is not limited specifically.
For example, if the receiver of the first service data is the third terminal device, the first terminal device may send the first service data to the third terminal device through the first resource of the multiple resources. It can be understood that the first resource includes M sub-resources, one sub-resource is used for carrying one data block, and M sub-resources can carry M data blocks. The M data blocks may all be the same or may be different.
S142, the third terminal device sends N positive acknowledgements corresponding to N of the M data blocks to the first terminal device, the first terminal device receives the N positive acknowledgements corresponding to N of the M data blocks, and the second terminal device also receives the N positive acknowledgements corresponding to N of the M data blocks. Or, the third terminal device does not send N negative acknowledgements corresponding to N of the M data blocks to the first terminal device, the first terminal device does not receive the N negative acknowledgements corresponding to N of the M data blocks, and in addition, the second terminal device also does not receive the N negative acknowledgements corresponding to N of the M data blocks. N is a positive integer, and M is greater than N.
If the embodiment of the present application is applied to a scenario with only negative acknowledgement (NACK only), the receiving end only sends NACK to the transmitting end, and if data reception is successful, the receiving end does not send ACK to the transmitting end, so that if the third terminal device does not send N NACKs to the first terminal device, and the first terminal device does not receive N NACKs from the third terminal device, it indicates that the corresponding N data blocks have been successfully received by the third terminal device.
The first terminal device sends the first service data to the third terminal device through the first resource, and receives N ACKs, which indicates that the N data blocks sent by the first terminal device have been successfully received by the third terminal device, and the N data blocks correspond to the N ACKs.
S143, the first terminal device releases a third resource, where the third resource is a resource reserved for the N data blocks, and the third resource does not include a resource portion corresponding to the N data blocks in the first resource.
For example, the plurality of resources reserved by the first terminal device for the first service data may include other resources in addition to the first resource, and the other resources may be located after the first resource in terms of time. For example, the first service data is periodic service data, the first terminal device may reserve a plurality of periodic resources for the first service data, and the first resource is a resource of one of the periods. In addition, in the multiple periods of resources reserved for the first service data, the content carried by the resource of each period may be the same, for example, the first resource is used to carry M data blocks, and the second resource reserved for the first service data is also used to carry the same M data blocks, which is equivalent to repeatedly transmitting the M data blocks multiple times.
After the first terminal device sends the M data blocks through the first resource, it has received N ACKs corresponding to the N data blocks from the third terminal device, or has not received N NACKs corresponding to the N data blocks from the third terminal device, which indicates that the third terminal device has successfully received the N data blocks, and therefore it is not necessary to continue sending the N data blocks to the third terminal device. In this case, resources for transmitting the N data blocks included in the plurality of resources reserved for the first traffic data may be released.
Therefore, the first terminal device may release the third resources corresponding to the N data blocks, where the third resources corresponding to the N data blocks may include all or part of the resources that are reserved for the N data blocks and that have not been used yet. The third resource may correspond to a resource of the first resources for carrying N data blocks, for example, the third resource and the resource of the first resources for carrying N data blocks are both resources reserved for N data blocks. That is to say, the first terminal device reserves third resources and resources for carrying N data blocks in the first resources for N data blocks, and after the first terminal device transmits M data blocks through the first resources, the first terminal device receives N ACKs from the third terminal device, or does not receive N NACKs from the third terminal device, so that the first terminal device does not need to transmit N data blocks through the third resources, and can release the third resources. Whereas for M-N data blocks (the remaining ones of the M data blocks except for the N data blocks), the first terminal device may not receive M-N ACKs from the third terminal device, or may receive M-N NACKs from the third terminal device, the first terminal device may continue to transmit the M-N data blocks on the second resources, which are resources reserved for the M-N data blocks, and the second resources do not include resources in the first resources that carry the M-N data blocks (because the resources in the first resources that carry the M-N data blocks have been used).
The third resource corresponding to the N data blocks released by the first terminal device may be a frequency domain resource occupied by the N data blocks in the next reservation period, or may be a resource mapped by some calculation rules, for example, the last N or the first N of the M resources are released. The resources released by the first terminal device are those whose energy is less than the threshold value at the time of detection by the other terminal devices, and thus are available to the other terminal devices. The first terminal device releases the third resource, which can be understood as that the first terminal device does not use the third resource. Since the first terminal device releases the third resource, and only the third resource is no longer utilized, there may be no further operation, therefore, the "first terminal device releases the third resource" in S143 may also be replaced with: and the first terminal equipment transmits the M-N data blocks on second resources, wherein the M-N data blocks are the rest data blocks except the N data blocks in the M data blocks, the second resources are reserved for the M-N data blocks, and the second resources do not comprise the corresponding resource parts of the M data blocks in the first resources.
Referring to fig. 15, taking the example that three periods of resources are reserved for transmitting the first traffic data, three portions A, B, C in fig. 15 represent the three periods of reserved resources, and the three periods of reserved resources are reserved for the first traffic data. For example, a denotes a first resource, which may carry M data blocks. The resource denoted by B may also carry the same M data blocks, and the resource denoted by C may also carry the same M data blocks. For example, after the first terminal device sends M data blocks through the first resource indicated by a, and receives N ACKs from the third terminal device, the first terminal device may release the resource indicated by B and the resource indicated by C, which are used for carrying the resources of N data blocks. And among the resources indicated by the B and the resources indicated by the C, the resources for carrying the M-N data blocks may not be released, and the first terminal device may continue to transmit the M-N data blocks by using the resources.
In addition, the third resource corresponds to N data blocks, which correspond to N ACKs (or N NACKs that are not received), so the third resource also corresponds to N ACKs (or N NACKs that are not received).
S144, the second terminal device determines that the third resource associated with the N ACKs is available.
The third terminal device sends N ACKs to the first terminal device, and these N ACKs may not only be received by the first terminal device, but also be received by other terminal devices, for example, the second terminal device also receives these N ACKs. Of course, if the third terminal device does not send N NACKs to the first terminal device, then neither the first terminal device nor the other terminal devices will receive N NACKs.
For other terminal devices than the first terminal device, for example the second terminal device, the second terminal device needs to determine which resources are the third resources. The second terminal device determines the third resource associated with the N ACKs (or N NACKs that are not received), and one way of determining the third resource may be that the second terminal device determines the resource associated with the fourth resource as the third resource. A resource having an association with the fourth resource, that is, a resource having an association with N ACKs (or N NACKs that are not received). And the third resource is the resource reserved for the N data blocks. The fourth resource is a resource for the third terminal device to send N ACKs to the first terminal device, and the first terminal device may receive N ACKs on the fourth resource, or the second terminal device may receive N ACKs on the fourth resource.
For example, an association relationship between the resource for carrying the ACK and the reserved resource corresponding to the ACK may be established in advance, for example, the association relationship may be specified by a protocol, or configured by a network device, and the like. In this way, when the third terminal device sends the ACK to the first terminal device, the resource that has an association relationship with the reserved resource (i.e., the third resource) corresponding to the ACK may be selected to send the ACK, so that the second terminal device may determine the corresponding third resource according to the fourth resource that carries the ACK after receiving the N ACKs. The association relationship between the resources for sending ACK and the released resources (or the reserved resources corresponding to the ACK) is established, so that the third terminal device can determine the reserved resources corresponding to the ACK, that is, determine the released resources, according to the resources for receiving ACK.
After the second terminal device receives the N ACKs, it may be determined that the third resources corresponding to the N ACKs are released. Equivalently, it is determined that the third resource is an available resource. Then the second terminal device may select some or all of the third resources to transmit when transmitting the traffic data.
In addition, the first terminal device sends the first service data to the third terminal device through the first resource, and for N data blocks, the third terminal device feeds back ACK or does not feed back NACK, and for M-N data blocks, the third terminal device may feed back NACK or may not feed back ACK, that is, the third terminal device sends M-N NACKs to the first terminal device, or may not send M-N ACKs to the first terminal device. After the first terminal equipment receives the M-N NACKs or does not receive the M-N ACKs, the first terminal equipment knows that the M-N data blocks are not successfully received by the third terminal equipment, and then reserved resources corresponding to the M-N data blocks cannot be released, and the M-N data blocks can be continuously retransmitted through the resources to enhance the coverage of the M-N data blocks, so that the receiving success rate of the third terminal equipment for the M-N data blocks is improved as much as possible.
For the second terminal device, no processing may be performed if M-N ACKs are not received. Or if the M-N NACKs are received, it can be determined that the reserved resources corresponding to the M-N NACKs are not released, and the second terminal device does not use the reserved resources, so as to reduce the probability of collision.
Wherein S143 may occur before S144, or S143 may occur after S144, or S143 and S144 may also occur simultaneously.
In the embodiment of the present application, the first traffic data may correspond to a transport block, and the transport block includes M code blocks, for example, then the M code blocks may be regarded as the M data blocks, and one ACK or one NACK corresponds to one code block. Or, the transport block includes M code block groups, for example, then the M code block groups may be regarded as the M data blocks, and one ACK or one NACK corresponds to one code block group.
Alternatively, the first service data may correspond to a plurality of transport blocks, and then M transport blocks may be regarded as said M data blocks, and one ACK or one NACK corresponds to one transport block.
In the embodiment of the present application, after the first terminal device sends the service data, if the ACK is received, which indicates that the sent service data has been successfully received by the receiving party, the first terminal device does not need to continue to send the service data through the reserved resources, so that the first terminal device can timely release the reserved resources, thereby reducing the waste of resources. And the reserved resources can be continuously utilized by other terminal equipment, so that the effective utilization rate of the resources is improved.
The following describes an apparatus for implementing the above method in the embodiment of the present application with reference to the drawings. Therefore, the above contents can be used in the subsequent embodiments, and the repeated contents are not repeated.
Fig. 16 is a schematic block diagram of a communication device 1600 provided in an embodiment of the present application. Exemplarily, the communication apparatus 1600 is, for example, the terminal apparatus 1600.
The terminal device 1600 includes a processing module 1610 and a transceiving module 1620. Illustratively, the terminal apparatus 1600 may be a terminal device, and may also be a chip applied in the terminal device or other combined devices, components, and the like having the functions of the terminal device. The transceiver module 1620 may be a transceiver when the terminal device is a terminal device, and may include an antenna, a radio frequency circuit, and the like, and the processing module 1610 may be a processor, such as a baseband processor, and one or more Central Processing Units (CPUs) may be included in the baseband processor. When the terminal device is a component having the above-described terminal function, the transceiving module 1620 may be a radio frequency unit, and the processing module 1610 may be a processor, such as a baseband processor. When the terminal device is a chip system, the transceiver module 1620 may be an input/output interface of the chip system (e.g., a baseband chip), and the processing module may be a processor of the chip system, and may include one or more central processing units.
The processing module 1610 may be configured to perform all operations performed by the first terminal device in the embodiment shown in fig. 10, such as S101, except transceiving operations, and/or other processes for supporting the techniques described herein. The transceiving module 1620 may be configured to perform all transceiving operations performed by the first terminal device in the embodiment shown in fig. 10, e.g., S102 and S103, and/or other processes for supporting the techniques described herein.
A transceiver module 1620, configured to send a first signaling to at least one second terminal device, where the first signaling is used to indicate time domain information and/or frequency domain information of a reserved resource, the time domain information is used to indicate a time length occupied by the reserved resource, and the frequency domain information is used to indicate a frequency domain bandwidth of the reserved resource;
the transceiver module 1620 is further configured to transmit the first service data or the control information on the reserved resource.
As an optional implementation, the processing module 1610 is configured to determine reserved resources.
As an optional implementation manner, the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resources, and includes: the state of the first field included in the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resources.
As an optional implementation, the first signaling is further used to indicate one or any combination of the following information:
a channel corresponding to the reserved resource;
the reserved resources are for multiple transmissions of one transport block;
the reserved resource is for a single transmission of a plurality of transport blocks;
the reserved resources are used for data initial transmission or data retransmission; or, the reserved resource is used for multicast service, broadcast service or unicast service.
As an optional implementation, the time domain information is further used to indicate:
a time domain offset, which is a time interval from a time point of transmitting the first signaling to a starting time point of the reserved resource.
As an optional implementation, the time domain information is further used to indicate:
a resource reservation period, wherein the reserved resources are repeated in a time domain at intervals of the resource reservation period; and/or reserving the number of times, wherein the reserved number of times is the number of times that the reserved resources are repeated on the time domain at intervals of the resource reservation period.
As an optional implementation manner, the first signaling does not include scheduling information of the service data.
As an optional implementation manner, the first signaling is further used for scheduling second service data; the time domain information and/or the frequency domain information of the reserved resources include one or any combination of the following items:
the reserved resource has frequency hopping or does not have frequency hopping relative to the resource occupied by the second service data;
the position of the reserved resource has an offset relative to the position of the resource occupied by the second service data, or has no offset; or, the size of the reserved resource has a scaling factor relative to the size of the resource occupied by the second service data, or has no change.
As an optional implementation manner, the relative time domain position of the reserved resource is the same as the relative time domain position of the first resource, the frequency domain position of the reserved resource is the same as the frequency domain position of the first resource, and the size of the reserved resource is the same as the size of the first resource; or, the relative time domain position of the reserved resource has a first deviation from the relative time domain position of the first resource, and/or the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource; the reserved resource and the first resource have the same size;
Wherein the first resource is a resource occupied by the second service data, the relative time domain position of the first resource is a relative position of the time domain position of the first resource in a time unit, and the relative time domain position of the second resource is a relative position of the time domain position of the second resource in the time unit.
As an optional implementation manner, the first signaling further carries third information, where the third information is an MCS of the first service data, or the third information is a difference between the MCS of the second service data and the MCS of the first service data.
As an optional implementation manner, the first signaling further carries fourth information, and the fourth information is the scaling factor.
As an optional implementation manner, the second service data is sent through a second resource;
the reserved resource is selected from a third resource, the frequency domain position of the third resource is the same as the frequency domain position of the second resource, and the relative position of the third resource in a time unit is the same as the relative position of the second resource in the time unit.
As an optional implementation manner, the time domain information is used to indicate a time length occupied by the reserved resource, and specifically includes:
The time domain information includes a time domain starting position and a time length of the reserved resource, or includes a time domain starting position and a time domain ending position of the reserved resource.
As an optional implementation manner, the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource, and specifically includes:
the frequency domain information includes a frequency domain starting position and a frequency domain bandwidth of the reserved resource, or includes a frequency domain starting position and an end position of the reserved resource.
As an optional implementation manner, the first signaling is SCI, system message, RRC signaling, or MAC signaling.
Or, the processing module 1610 is configured to determine a parameter of the first signaling according to the reserved resource, where the parameter of the first signaling includes at least one of the following parameters: a resource for carrying the first signaling, a size of the first signaling, or an RNTI for scrambling CRC of the first signaling;
a transceiver module 1620, configured to send a first signaling to at least one second terminal device, where a parameter of the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resource, the time domain information is used to indicate a time length occupied by the reserved resource, and the frequency domain information is used to indicate a frequency domain bandwidth of the reserved resource;
The transceiver module 1620 is further configured to transmit the first service data or the control information on the reserved resource.
As an optional implementation, the parameter of the first signaling is further used to indicate one or any combination of the following information:
a channel corresponding to the reserved resource;
the reserved resources are for multiple transmissions of one transport block;
the reserved resource is for a single transmission of a plurality of transport blocks;
the reserved resources are used for data initial transmission or data retransmission; or, the reserved resource is used for multicast service, broadcast service or unicast service.
As an optional implementation, the time domain information is further used to indicate:
a time domain offset, which is a time interval from a time point of transmitting the first signaling to a starting time point of the reserved resource.
As an optional implementation, the time domain information is further used to indicate:
a resource reservation period, wherein the reserved resources are repeated in a time domain at intervals of the resource reservation period; and/or reserving the number of times, wherein the reserved number of times is the number of times that the reserved resources are repeated on the time domain at intervals of the resource reservation period.
As an optional implementation manner, the first signaling does not include scheduling information of the service data.
As an optional implementation manner, the first signaling is further used for scheduling second service data; the time domain information and/or the frequency domain information of the reserved resources include one or any combination of the following items:
the reserved resource has frequency hopping or does not have frequency hopping relative to the resource occupied by the second service data;
the position of the reserved resource has an offset relative to the position of the resource occupied by the second service data, or has no offset; or, the size of the reserved resource has a scaling factor relative to the size of the resource occupied by the second service data, or has no change.
As an optional implementation manner, the relative time domain position of the reserved resource is the same as the relative time domain position of the first resource, the frequency domain position of the reserved resource is the same as the frequency domain position of the first resource, and the size of the reserved resource is the same as the size of the first resource; or, the relative time domain position of the reserved resource has a first deviation from the relative time domain position of the first resource, and/or the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource; the reserved resource and the first resource have the same size;
Wherein the first resource is a resource occupied by the second service data, the relative time domain position of the first resource is a relative position of the time domain position of the first resource in a time unit, and the relative time domain position of the second resource is a relative position of the time domain position of the second resource in the time unit.
As an optional implementation manner, the first signaling further carries third information, where the third information is an MCS of the first service data, or the third information is a difference between the MCS of the second service data and the MCS of the first service data.
As an optional implementation manner, the first signaling further carries fourth information, and the fourth information is the scaling factor.
As an optional implementation manner, the second service data is sent through a second resource;
the reserved resource is selected from a third resource, the frequency domain position of the third resource is the same as the frequency domain position of the second resource, and the relative position of the third resource in a time unit is the same as the relative position of the second resource in the time unit.
As an optional implementation manner, the time domain information is used to indicate a time length occupied by the reserved resource, and specifically includes:
The time domain information includes a time domain starting position and a time length of the reserved resource, or includes a time domain starting position and a time domain ending position of the reserved resource.
As an optional implementation manner, the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource, and specifically includes:
the frequency domain information includes a frequency domain starting position and a frequency domain bandwidth of the reserved resource, or includes a frequency domain starting position and an end position of the reserved resource.
As an optional implementation manner, the first signaling is SCI, system message, RRC signaling, or MAC signaling.
It should be understood that the processing module 1610 in the embodiments of the present application may be implemented by a processor or a processor-related circuit component, and the transceiver module 1620 may be implemented by a transceiver or a transceiver-related circuit component.
As shown in fig. 17, an embodiment of the present application further provides a communication apparatus 1700. Exemplarily, the communication apparatus 1700 is, for example, a terminal apparatus 1700. Illustratively, the terminal apparatus 1700 may be a communication device, such as a terminal device, or may also be a chip system or the like. The terminal device 1700 includes a processor 1710, a memory 1720 and a transceiver 1730, wherein the memory 1720 stores instructions or programs and the processor 1710 is configured to execute the instructions or programs stored in the memory 1720. When the instructions or programs stored in the memory 1720 are executed, the processor 1710 is configured to perform the operations performed by the processing module 1610 in the above embodiments, and the transceiver 1730 is configured to perform the operations performed by the transceiver module 1620 in the above embodiments.
It should be understood that terminal apparatus 1600 or terminal apparatus 1700 according to the embodiment of the present application may implement the function of the first terminal device in the embodiment shown in fig. 10, and the operation and/or function of each module in terminal apparatus 1600 or terminal apparatus 1700 are respectively for implementing the corresponding flow in the embodiment shown in fig. 10, and are not described herein again for brevity.
Fig. 18 is a schematic block diagram of a communication device 1800 according to an embodiment of the present application. Exemplarily, the communication apparatus 1800 is, for example, a terminal apparatus 1800.
The terminal apparatus 1800 includes a processing module 1810 and a transceiver module 1820. The terminal device 1800 may be a terminal device, a chip applied in the terminal device, or other combined devices, components, etc. having the functions of the terminal device. The transceiver module 1820 may be a transceiver when the terminal device is a terminal device, and may include an antenna, a radio frequency circuit, and the like, and the processing module 1810 may be a processor, such as a baseband processor, which may include one or more CPUs therein. When the terminal device is a component having the above terminal function, the transceiver module 1820 may be a radio frequency unit, and the processing module 1810 may be a processor, such as a baseband processor. When the terminal device is a chip system, the transceiver module 1820 may be an input/output interface of the chip system (e.g., a baseband chip), and the processing module may be a processor of the chip system and may include one or more central processing units.
The processing module 1810 may be configured to perform all operations, except transceiving operations, performed by the second terminal device in the embodiment shown in fig. 10, such as determining a time domain location and/or a frequency domain location of a reserved resource according to the first signaling or a parameter of the first signaling, and/or other procedures for supporting the techniques described herein. The transceiving module 1820 may be configured to perform all transceiving operations performed by the second terminal device in the embodiment illustrated in fig. 10, e.g., S102 and S103, and/or other processes for supporting the techniques described herein.
A transceiver module 1820, configured to receive a first signaling from a first terminal device, where the first signaling is used to indicate time domain information and/or frequency domain information of a reserved resource, where the time domain information includes a time length occupied by the reserved resource, and the frequency domain information is used to indicate a frequency domain bandwidth of the reserved resource;
the transceiver module 1820 is further configured to receive first traffic data or control information from the first terminal device on the reserved resource.
As an optional implementation, the processing module 1810 is configured to determine the reserved resource according to the first signaling.
As an optional implementation manner, the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resources, and includes:
the state of the first field included in the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resources.
As an optional implementation, the first signaling is further used to indicate one or any combination of the following information:
a channel corresponding to the reserved resource;
the reserved resources are for multiple transmissions of one transport block;
the reserved resource is for a single transmission of a plurality of transport blocks;
the reserved resources are used for data initial transmission or data retransmission; or, the reserved resource is used for multicast service, broadcast service or unicast service.
As an optional implementation, the time domain information is further used to indicate:
a time domain offset, which is a time interval from a time point of transmitting the first signaling to a starting time point of the reserved resource.
As an optional implementation, the time domain information is further used to indicate:
a resource reservation period, wherein the reserved resources are repeated in a time domain at intervals of the resource reservation period; or, reserving the number of times, where the number of times of reservation is the number of times that the reserved resource is repeated in the time domain at intervals of the resource reservation period.
As an optional implementation manner, the first signaling does not include scheduling information of the service data.
As an optional implementation manner, the first signaling is further used for scheduling second service data; the time domain information and/or the frequency domain information of the reserved resources include one or any combination of the following items:
the reserved resource has frequency hopping or does not have frequency hopping relative to the resource occupied by the second service data;
the position of the reserved resource has an offset relative to the position of the resource occupied by the second service data, or has no offset; or, the size of the reserved resource has a scaling factor relative to the size of the resource occupied by the second service data, or has no change.
As an optional implementation manner, the relative time domain position of the reserved resource is the same as the relative time domain position of the first resource, the frequency domain position of the reserved resource is the same as the frequency domain position of the first resource, and the size of the reserved resource is the same as the size of the first resource; or, the relative time domain position of the reserved resource has a first deviation from the relative time domain position of the first resource, and/or the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource; the reserved resource and the first resource have the same size;
Wherein the first resource is a resource occupied by the second service data, the relative time domain position of the first resource is a relative position of the time domain position of the first resource in a time unit, and the relative time domain position of the second resource is a relative position of the time domain position of the second resource in the time unit.
As an optional implementation manner, the first signaling further carries third information, where the third information is an MCS of the first service data, or the third information is a difference between the MCS of the second service data and the MCS of the first service data.
As an optional implementation manner, the first signaling further carries fourth information, and the fourth information is the scaling factor.
As an optional implementation manner, the second service data is sent through a second resource;
the reserved resource is selected from a third resource, the frequency domain position of the third resource is the same as the frequency domain position of the second resource, and the relative position of the third resource in a time unit is the same as the relative position of the second resource in the time unit.
As an optional implementation manner, the time domain information is used to indicate a time length occupied by the reserved resource, and specifically includes:
The time domain information includes a time domain starting position and a time length of the reserved resource, or includes a time domain starting position and a time domain ending position of the reserved resource.
As an optional implementation manner, the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource, and specifically includes:
the frequency domain information includes a frequency domain starting position and a frequency domain bandwidth of the reserved resource, or includes a frequency domain starting position and an end position of the reserved resource.
As an optional implementation manner, the first signaling is SCI, system message, RRC signaling, or MAC signaling.
Or, the transceiver module 1820 is configured to receive a first signaling from a first terminal device, where a parameter of the first signaling includes at least one of the following parameters: the resource of the first signaling is borne, the size of the first signaling, or the RNTI of the CRC for scrambling the first signaling, the parameter of the first signaling is used to indicate the time domain information and/or the frequency domain information of the reserved resource, the time domain information is used to indicate the time length occupied by the reserved resource, and the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource;
The transceiver module 1820 is further configured to receive first traffic data or control information from the first terminal device on the reserved resource.
As an optional implementation, the processing module 1810 is configured to determine the reserved resource according to a parameter of the first signaling.
As an optional implementation, the parameter of the first signaling is further used to indicate one or any combination of the following information:
a channel corresponding to the reserved resource;
the reserved resources are for multiple transmissions of one transport block;
the reserved resource is for a single transmission of a plurality of transport blocks;
the reserved resources are used for data initial transmission or data retransmission; or, the reserved resource is used for multicast service, broadcast service or unicast service.
As an optional implementation, the time domain information is further used to indicate:
a time domain offset, which is a time interval from a time point of transmitting the first signaling to a starting time point of the reserved resource.
As an optional implementation, the time domain information is further used to indicate:
a resource reservation period, wherein the reserved resources are repeated in a time domain at intervals of the resource reservation period; or, reserving the number of times, where the number of times of reservation is the number of times that the reserved resource is repeated in the time domain at intervals of the resource reservation period.
As an optional implementation manner, the first signaling does not include scheduling information of the service data.
As an optional implementation manner, the first signaling is further used for scheduling second service data; the time domain information and/or the frequency domain information of the reserved resources include one or any combination of the following items:
the reserved resource has frequency hopping or does not have frequency hopping relative to the resource occupied by the second service data;
the position of the reserved resource has an offset relative to the position of the resource occupied by the second service data, or has no offset; or, the size of the reserved resource has a scaling factor relative to the size of the resource occupied by the second service data, or has no change.
As an optional implementation manner, the relative time domain position of the reserved resource is the same as the relative time domain position of the first resource, the frequency domain position of the reserved resource is the same as the frequency domain position of the first resource, and the size of the reserved resource is the same as the size of the first resource; or, the relative time domain position of the reserved resource has a first deviation from the relative time domain position of the first resource, and/or the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource; the reserved resource and the first resource have the same size;
Wherein the first resource is a resource occupied by the second service data, the relative time domain position of the first resource is a relative position of the time domain position of the first resource in a time unit, and the relative time domain position of the second resource is a relative position of the time domain position of the second resource in the time unit.
As an optional implementation manner, the first signaling further carries third information, where the third information is an MCS of the first service data, or the third information is a difference between the MCS of the second service data and the MCS of the first service data.
As an optional implementation manner, the first signaling further carries fourth information, and the fourth information is the scaling factor.
As an optional implementation manner, the second service data is sent through a second resource;
the reserved resource is selected from a third resource, the frequency domain position of the third resource is the same as the frequency domain position of the second resource, and the relative position of the third resource in a time unit is the same as the relative position of the second resource in the time unit.
As an optional implementation manner, the time domain information is used to indicate a time length occupied by the reserved resource, and specifically includes:
The time domain information includes a time domain starting position and a time length of the reserved resource, or includes a time domain starting position and a time domain ending position of the reserved resource.
As an optional implementation manner, the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource, and specifically includes:
the frequency domain information includes a frequency domain starting position and a frequency domain bandwidth of the reserved resource, or includes a frequency domain starting position and an end position of the reserved resource.
As an optional implementation manner, the first signaling is SCI, system message, RRC signaling, or MAC signaling.
It should be understood that the processing module 1810 may be implemented by a processor or a processor-related circuit component and the transceiver module 1820 may be implemented by a transceiver or a transceiver-related circuit component in the embodiments of the present application.
As shown in fig. 19, an embodiment of the present application further provides a communication device 1900. Illustratively, the communication device 1900 is, for example, a terminal device 1900. Illustratively, the terminal apparatus 1900 may be a communication device, such as a terminal device, or may also be a chip system or the like. The terminal device 1900 includes a processor 1910, a memory 1920, and a transceiver 1930, wherein the memory 1920 stores instructions or programs and the processor 1910 is configured to execute the instructions or programs stored in the memory 1920. When the instructions or programs stored in the memory 1920 are executed, the processor 1910 is configured to perform the operations performed by the processing module 1810 in the above embodiments, and the transceiver 1930 is configured to perform the operations performed by the transceiver 1820 in the above embodiments.
It should be understood that the terminal device 1800 or the terminal device 1900 according to the embodiment of the present application may implement the function of the second terminal apparatus in the embodiment shown in fig. 10, and the operations and/or functions of the respective modules in the terminal device 1800 or the terminal device 1900 are respectively for implementing the corresponding flows in the embodiment shown in fig. 10, and are not described herein again for brevity.
Fig. 20 is a schematic block diagram of a communication device 2000 according to an embodiment of the present application. Illustratively, the communication device 2000 is, for example, a terminal device 2000.
The terminal device 2000 includes a processing module 2010 and a transceiver module 2020. The terminal device 2000 may be a terminal device, or may be a chip applied in the terminal device, or other combined devices, components, and the like having the functions of the terminal device. The transceiver module 2020 may be a transceiver when the terminal device is a terminal equipment, may include an antenna, a radio frequency circuit, and the like, and the processing module 2010 may be a processor, such as a baseband processor, which may include one or more CPUs therein. When the terminal device is a component having the above terminal function, the transceiver module 2020 may be a radio frequency unit, and the processing module 2010 may be a processor, such as a baseband processor. When the terminal device is a chip system, the transceiver module 2020 may be an input/output interface of the chip system (e.g., a baseband chip), and the processing module may be a processor of the chip system and may include one or more central processing units.
Processing module 2010 may be configured to perform all operations performed by the first terminal device in the embodiment shown in fig. 14, except for transceiving operations, e.g., S143, and/or other processes to support the techniques described herein. The transceiver module 2020 may be used to perform all transceiving operations performed by the first terminal device in the embodiment shown in fig. 14, e.g., S141 and S142, and/or other processes for supporting the techniques described herein.
A transceiver module 2020, configured to transmit first service data on a first resource, where the first service data includes M data blocks;
a transceiver module 2020, configured to receive positive acknowledgements for N data blocks of the M data blocks, or receive no negative acknowledgements for N data blocks of the M data blocks, where M and N are positive integers, and M is greater than or equal to N;
a processing module 2010, configured to release a third resource, where the third resource is a resource reserved for the N data blocks, and the third resource does not include a resource portion of the N data blocks corresponding to the first resource.
As an optional implementation manner, the transceiver module 2020 is further configured to transmit M-N data blocks on a second resource, where the M-N data blocks are remaining data blocks of the M data blocks except for the N data blocks, the second resource is a resource reserved for the M-N data blocks, and the second resource does not include a corresponding resource portion of the M data blocks in the first resource.
As an optional implementation, the third resource has an association relationship with the N positive acknowledgements.
As an optional implementation, the associating relationship between the third resource and the N positive acknowledgements includes:
the third resource has an association relationship with a fourth resource for carrying the N acknowledgements.
As an alternative embodiment, the transceiver module 2020 is further configured to receive M-N negative acknowledgements for the M-N data blocks.
As an optional implementation, the first service data corresponds to one transport block, the transport block includes the M data blocks, the M data blocks are M code blocks or M code block groups, and one acknowledgement or negative acknowledgement corresponds to one code block or one code block group.
As an optional implementation manner, the first service data corresponds to M transport blocks, the M transport blocks are the M data blocks, and one acknowledgement or negative acknowledgement corresponds to one transport block.
It should be understood that the processing module 2010 in the embodiments of the present application may be implemented by a processor or a processor-related circuit component, and the transceiver module 2020 may be implemented by a transceiver or a transceiver-related circuit component.
As shown in fig. 21, an embodiment of the present application further provides a communication device 2100. Illustratively, the communication device 2100 is, for example, a terminal device 2100. Illustratively, the terminal apparatus 2100 may be a communication device, such as a terminal device, or may also be a chip system or the like. The terminal device 2100 comprises a processor 2110, a memory 2120 and a transceiver 2130, wherein the memory 2120 stores instructions or programs, and the processor 2110 is configured to execute the instructions or programs stored in the memory 2120. When the instructions or programs stored in the memory 2120 are executed, the processor 2110 is configured to perform the operations performed by the processing module 2010 in the above-described embodiment, and the transceiver 2130 is configured to perform the operations performed by the transceiver module 2020 in the above-described embodiment.
It should be understood that the terminal device 2000 or the terminal device 2100 according to the embodiment of the present application may implement the function of the first terminal device in the embodiment shown in fig. 14, and the operations and/or functions of the respective modules in the terminal device 2000 or the terminal device 2100 are respectively for implementing the corresponding flows in the embodiment shown in fig. 14, and are not described herein again for brevity.
Fig. 22 is a schematic block diagram of a communication apparatus 2200 provided in an embodiment of the present application. Exemplarily, the communication apparatus 2200 is, for example, a terminal apparatus 2200.
The terminal device 2200 includes a processing module 2210 and a transceiver module 2220. The terminal device 2000 may be a terminal device, or may be a chip applied in the terminal device, or other combined devices, components, and the like having the functions of the terminal device. The transceiving module 2220 may be a transceiver when the terminal apparatus is a terminal device, and may include an antenna, a radio frequency circuit, and the like, and the processing module 2210 may be a processor, for example, a baseband processor, and one or more CPUs may be included in the baseband processor. When the terminal device is a component having the above terminal function, the transceiving module 2220 may be a radio frequency unit, and the processing module 2210 may be a processor, for example, a baseband processor. When the terminal device is a chip system, the transceiver module 2220 may be an input/output interface of the chip system (e.g., a baseband chip), and the processing module may be a processor of the chip system, and may include one or more central processing units.
Among other things, processing module 2210 may be used to perform all operations performed by the second terminal device in the embodiment shown in fig. 14, except for transceiving operations, e.g., S144, and/or other processes for supporting the techniques described herein. The transceiving module 2220 may be used to perform all transceiving operations performed by the second terminal device in the embodiment illustrated in fig. 14, e.g., S142, and/or other processes to support the techniques described herein.
A transceiver module 2220, configured to receive N acknowledgements from a third terminal device, where the N acknowledgements correspond to N data blocks in the first service data received by the third terminal device from the first terminal device, and N is a positive integer;
a processing module 2210, configured to determine that a third resource having an association relationship with the N positive acknowledgements is an available resource.
As an optional implementation, the third resource is a resource reserved for the N data blocks.
As an optional implementation manner, the processing module 2210 is further configured to occupy the third resource, so as to transmit the second service data through the transceiver module 2220.
As an alternative embodiment, the processing module 2210 is configured to determine that the third resource having an association relationship with the N positive acknowledgements is an available resource by:
determining that the third resource having an association relation with fourth resources corresponding to the N positive acknowledgements is an available resource, wherein the fourth resource is a resource carrying the N positive acknowledgements.
As an optional implementation, the first service data corresponds to a transport block, the transport block includes M code blocks or code block groups, and an acknowledgement or a negative acknowledgement corresponds to one code block or code block group, where the N data blocks are N code blocks included in the M code blocks, or the N data blocks are N code block groups included in the M code block groups, and M is greater than N.
As an optional implementation manner, the first service data corresponds to M transport blocks, the N data blocks are N transport blocks included in the M transport blocks, and one acknowledgement or negative acknowledgement corresponds to one transport block.
It should be understood that the processing module 2210 in the embodiments of the present application may be implemented by a processor or processor-related circuit component, and the transceiver module 2220 may be implemented by a transceiver or transceiver-related circuit component.
As shown in fig. 23, the present embodiment also provides a communication device 2300. Illustratively, the communication device 2300 is, for example, a terminal device 2300. Illustratively, the terminal device 2300 may be a communication device, such as a terminal device, or may also be a system-on-chip or the like. The terminal device 2300 includes a processor 2310, a memory 2320 and a transceiver 2330, wherein the memory 2320 stores instructions or programs and the processor 2310 is configured to execute the instructions or programs stored in the memory 2120. When the instructions or programs stored in the memory 2320 are executed, the processor 2310 is configured to perform the operations performed by the processing module 2210 in the above-described embodiment, and the transceiver 2330 is configured to perform the operations performed by the transceiver module 2220 in the above-described embodiment.
It should be understood that the terminal apparatus 2200 or the terminal apparatus 2300 according to the embodiment of the present application may implement the function of the second terminal device in the embodiment shown in fig. 14, and the operations and/or functions of the respective modules in the terminal apparatus 2200 or the terminal apparatus 2300 are respectively for implementing the corresponding processes in the embodiment shown in fig. 14, and are not described herein again for brevity.
The embodiment of the application also provides a communication device, and the communication device can be terminal equipment or a circuit. The communication apparatus may be configured to perform the actions performed by the first terminal device or the second terminal device in the method embodiment shown in fig. 10, or perform the actions performed by the first terminal device or the second terminal device in the method embodiment shown in fig. 14.
When the communication apparatus is a terminal device, fig. 24 shows a schematic structural diagram of a simplified terminal device. As shown in fig. 24, the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input-output device. The processor is mainly used for processing communication protocols and communication data, controlling the terminal equipment, executing software programs, processing data of the software programs and the like. The memory is used primarily for storing software programs and data. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user. It should be noted that some kinds of terminal devices may not have input/output devices.
When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs baseband signals to the radio frequency circuit, and the radio frequency circuit performs radio frequency processing on the baseband signals and sends the radio frequency signals to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data. For ease of illustration, only one memory and processor are shown in FIG. 24. In an actual end device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be provided independently of the processor, or may be integrated with the processor, which is not limited in this embodiment.
In the embodiment of the present application, the antenna and the radio frequency circuit having the transceiving function may be regarded as a transceiving unit of the terminal device, and the processor having the processing function may be regarded as a processing unit of the terminal device. As shown in fig. 24, the terminal device includes a transceiving unit 2410 and a processing unit 2420. A transceiver unit may also be referred to as a transceiver, a transceiving device, etc. A processing unit may also be referred to as a processor, a processing board, a processing module, a processing device, or the like. Optionally, a device in the transceiving unit 2410 for implementing the receiving function may be regarded as a receiving unit, and a device in the transceiving unit 2410 for implementing the transmitting function may be regarded as a transmitting unit, that is, the transceiving unit 2410 includes a receiving unit and a transmitting unit. A transceiver unit may also sometimes be referred to as a transceiver, transceiving circuitry, or the like. A receiving unit may also be referred to as a receiver, a receiving circuit, or the like. A transmitting unit may also sometimes be referred to as a transmitter, or a transmitting circuit, etc.
It should be understood that the transceiving unit 2410 is configured to perform the transmitting operation and the receiving operation on the first terminal device side in the method embodiment shown in fig. 10, and the processing unit 2420 is configured to perform other operations besides the transceiving operation on the first terminal device side in the method embodiment shown in fig. 10.
For example, in one implementation, the transceiving unit 2410 is configured to perform all transceiving steps on the first terminal device side in the embodiment shown in fig. 10, such as S102 and S103. A processing unit 2420 configured to perform other operations, such as S101, besides the transceiving operation, on the first terminal device side in the embodiment shown in fig. 10, and/or other procedures for supporting the techniques described herein.
Alternatively, the transceiving unit 2410 is configured to perform the transmitting operation and the receiving operation on the second terminal device side in the method embodiment shown in fig. 10, and the processing unit 2420 is configured to perform other operations besides the transceiving operation on the second terminal device side in the method embodiment shown in fig. 10.
For example, in one implementation, the transceiving unit 2410 is configured to perform all transceiving steps on the second terminal device side in the embodiment shown in fig. 10, such as S102 and S103. A processing unit 2420, configured to perform other operations besides transceiving operations on the second terminal device side in the embodiment shown in fig. 10, for example, an operation of determining a time domain location and/or a frequency domain location of a reserved resource according to the first signaling or a parameter of the first signaling, and/or other procedures for supporting the techniques described herein.
Alternatively, the transceiving unit 2410 is configured to perform the transmitting operation and the receiving operation on the first terminal device side in the method embodiment shown in fig. 14, and the processing unit 2420 is configured to perform other operations besides the transceiving operation on the first terminal device side in the method embodiment shown in fig. 14.
For example, in one implementation, the transceiving unit 2410 is configured to perform all transceiving steps on the first terminal device side in the embodiment shown in fig. 14, for example, S141 and S142. A processing unit 2420, configured to perform other operations besides the transceiving operation, for example, S143, on the first terminal device side in the embodiment shown in fig. 14, and/or other procedures for supporting the techniques described herein.
Alternatively, the transceiving unit 2410 is configured to perform the transmitting operation and the receiving operation on the second terminal device side in the method embodiment shown in fig. 14, and the processing unit 2420 is configured to perform other operations besides the transceiving operation on the second terminal device side in the method embodiment shown in fig. 14.
For example, in one implementation, the transceiving unit 2410 is configured to perform all transceiving steps on the second terminal device side in the embodiment shown in fig. 14, for example, S142. A processing unit 2420 configured to perform other operations, such as S144, besides the transceiving operation, on the second terminal device side in the embodiment shown in fig. 14, and/or other procedures for supporting the techniques described herein.
When the communication device is a chip, the chip includes a transceiver unit and a processing unit. The transceiver unit can be an input/output circuit and a communication interface; the processing unit is a processor or a microprocessor or an integrated circuit integrated on the chip.
When the communication device in the embodiment of the present application is a terminal device, reference may be made to the device shown in fig. 25. As an example, the device may perform functions similar to processor 2510 in FIG. 25. In fig. 9, the apparatus includes a processor 2510, a transmit data processor 2520, and a receive data processor 930. The processing module 1610 in the above embodiments may be the processor 2510 in fig. 25, and performs the corresponding functions; the transceiver module 1620 in the above embodiments may be the sending data processor 2520 and/or the receiving data processor 2530 in fig. 25. Alternatively, the processing module 1810 in the above embodiments may be the processor 2510 in fig. 25, and perform corresponding functions; the transceiver module 1820 in the above-described embodiments may be the transmit data processor 2520 and/or the receive data processor 2530 in fig. 25. Alternatively, the processing module 2010 in the above embodiment may be the processor 2510 in fig. 25 and perform the corresponding functions; the transceiver module 2020 in the above embodiments may be the transmit data processor 2520 and/or the receive data processor 2530 in fig. 25. Alternatively, the processing module 2210 in the above embodiments may be the processor 2510 in fig. 25 and perform corresponding functions; the transceiver module 2220 in the above-described embodiments may be the transmission data processor 2520 and/or the reception data processor 2530 in fig. 25.
Although fig. 25 shows a channel encoder and a channel decoder, it is understood that these blocks are not limitative and only illustrative to the present embodiment.
Fig. 26 shows another form of the present embodiment. The processing device 2600 includes modules such as a modulation subsystem, a central processing subsystem, and peripheral subsystems. The communication device in this embodiment may serve as a modulation subsystem therein. In particular, the modulation subsystem may include a processor 2603 and an interface 2604. The processor 2603 performs the functions of the processing module 1610, and the interface 2604 performs the functions of the transceiver module 1620. Alternatively, the processor 2603 performs the functions of the processing module 1810, and the interface 2604 performs the functions of the transceiver module 1820. Alternatively, the processor 2603 may perform the functions of the processing module 2010 and the interface 2604 may perform the functions of the transceiver 2020. Alternatively, the processor 2603 performs the functions of the processing module 2210, and the interface 2604 performs the functions of the transceiver module 2220. As another variation, the modulation subsystem includes a memory 2606, a processor 2603, and a program stored in the memory 2606 and executable on the processor, where the processor 2603 implements the method of the first terminal device side or the second terminal device side in the method embodiment shown in fig. 10 when executing the program, or implements the method of the first terminal device side or the second terminal device side in the method embodiment shown in fig. 14 when executing the program. It should be noted that the memory 2606 may be non-volatile or volatile, and may be located within the modulation subsystem or within the processing device 2600, as long as the memory 2606 is coupled to the processor 2603.
The embodiment of the application also provides a first communication system. The communication system may include the first terminal device according to the embodiment shown in fig. 10 and the second terminal device according to the embodiment shown in fig. 10. The first terminal device is, for example, terminal apparatus 1600 in fig. 16 or terminal apparatus 1700 in fig. 17, and the second terminal device is, for example, terminal apparatus 1800 in fig. 18 or terminal apparatus 1900 in fig. 5. For example, the first terminal device may be configured to perform all operations performed by the first terminal device in the embodiment shown in fig. 10, e.g., S101-S103 in the embodiment shown in fig. 10, and/or other processes for supporting the techniques described herein. The second terminal device may be configured to perform all operations performed by the second terminal device in the embodiment shown in fig. 10, such as S102 and S103 in the embodiment shown in fig. 10, determine a time domain location and/or a frequency domain location of reserved resources according to the first signaling or parameters of the first signaling, and/or other processes for supporting the techniques described herein.
The embodiment of the application also provides a second communication system. The communication system may include the first terminal device according to the embodiment shown in fig. 14 and the second terminal device according to the embodiment shown in fig. 14. The first terminal device is, for example, terminal apparatus 2000 in fig. 20 or terminal apparatus 2100 in fig. 21, and the second terminal device is, for example, terminal apparatus 2200 in fig. 22 or terminal apparatus 2300 in fig. 23, and the like. For example, the first terminal device may be configured to perform all operations performed by the first terminal device in the embodiment shown in fig. 14, such as S141-S143 in the embodiment shown in fig. 14, and/or other processes for supporting the techniques described herein. The second terminal device may be used to perform all operations performed by the second terminal device in the embodiment shown in fig. 14, such as S142 and S144 in the embodiment shown in fig. 14, and/or other processes for supporting the techniques described herein.
The first communication system and the second communication system may be the same communication system or may be different communication systems.
The embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, can implement the process related to the first terminal device in the embodiment shown in fig. 10 and provided by the foregoing method embodiment.
The embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, can implement the process related to the second terminal device in the embodiment shown in fig. 10 and provided by the foregoing method embodiment.
An embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, may implement the process related to the first terminal device in the embodiment shown in fig. 14 and provided in the foregoing method embodiment.
An embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, can implement the process related to the second terminal device in the embodiment shown in fig. 14 and provided in the foregoing method embodiment.
The present application further provides a computer program product containing instructions, which when executed, perform the method on the first terminal device side in the method embodiment shown in fig. 10.
An embodiment of the present application further provides a computer program product containing instructions, where the instructions are executed to perform the method on the second terminal device side in the method embodiment shown in fig. 10.
An embodiment of the present application further provides a computer program product containing instructions, where the instructions are executed to perform the method on the first terminal device side in the method embodiment shown in fig. 14.
An embodiment of the present application further provides a computer program product containing instructions, where the instructions are executed to perform the method on the second terminal device side in the method embodiment shown in fig. 14.
It should be understood that the processor mentioned in the embodiments of the present application may be a CPU, and may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
It will also be appreciated that the memory referred to in the embodiments of the application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM, enhanced SDRAM, SLDRAM, Synchronous Link DRAM (SLDRAM), and direct rambus RAM (DR RAM).
It should be noted that when the processor is a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, the memory (memory module) is integrated in the processor.
It should be noted that the memory described herein is intended to comprise, without being limited to, these and any other suitable types of memory.
It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above description is only for the specific implementation of the present application, but the scope of the embodiments of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the embodiments of the present application, and all the changes or substitutions should be covered by the scope of the present application. Therefore, the protection scope of the embodiments of the present application shall be subject to the protection scope of the claims.
Claims (35)
1. A method of communication, comprising:
a first terminal device sends a first signaling to at least one second terminal device, wherein the first signaling is used for indicating time domain information and/or frequency domain information of reserved resources, the time domain information is used for indicating the time length occupied by the reserved resources, and the frequency domain information is used for indicating the frequency domain bandwidth of the reserved resources;
and the first terminal equipment sends first service data or control information on the reserved resources.
2. The method of claim 1, wherein the first signaling is used for indicating time domain information and/or frequency domain information of the reserved resources, and comprises:
the state of the first field of the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resources.
3. The method according to claim 1 or 2, wherein the first signaling is further used for indicating one or any combination of the following information:
a channel corresponding to the reserved resource;
the reserved resources are for multiple transmissions of one transport block;
the reserved resource is for a single transmission of a plurality of transport blocks;
The reserved resources are used for data initial transmission or data retransmission; or the like, or, alternatively,
the reserved resources are for multicast traffic, broadcast traffic or unicast traffic.
4. A method of communication, comprising:
the first terminal equipment determines parameters of first signaling according to the reserved resources, wherein the parameters of the first signaling comprise at least one of the following parameters: a resource for carrying the first signaling, a size of the first signaling, or an RNTI for scrambling CRC of the first signaling;
the first terminal device sends a first signaling to at least one second terminal device, wherein parameters of the first signaling are used for indicating time domain information and/or frequency domain information of the reserved resources, the time domain information is used for indicating the time length occupied by the reserved resources, and the frequency domain information is used for indicating the frequency domain bandwidth of the reserved resources;
and the first terminal equipment sends first service data or control information on the reserved resources.
5. The method of claim 4, wherein the parameter of the first signaling is further used to indicate one or any combination of the following information:
a channel corresponding to the reserved resource;
The reserved resources are for multiple transmissions of one transport block;
the reserved resource is for a single transmission of a plurality of transport blocks;
the reserved resources are used for data initial transmission or data retransmission; or the like, or, alternatively,
the reserved resources are for multicast traffic, broadcast traffic or unicast traffic.
6. The method according to any of claims 1 to 5, wherein the time domain information is further used to indicate:
a time domain offset, which is a time interval from a time point of transmitting the first signaling to a starting time point of the reserved resource.
7. The method according to any of claims 1 to 6, wherein the time domain information is further used to indicate:
a resource reservation period, wherein the reserved resources are repeated in a time domain at intervals of the resource reservation period; and/or the presence of a gas in the gas,
and reserving the number of times, wherein the reserved number of times is the number of times that the reserved resource is repeated on the time domain at intervals of the resource reservation period.
8. The method according to any of claims 1 to 7, wherein the first signaling does not include scheduling information of traffic data.
9. The method according to any of claims 1 to 7, wherein the first signaling is further used for scheduling second traffic data; the time domain information and/or the frequency domain information of the reserved resources include one or any combination of the following items:
The reserved resource has frequency hopping or does not have frequency hopping relative to the resource occupied by the second service data;
the position of the reserved resource has an offset relative to the position of the resource occupied by the second service data, or has no offset; or the like, or, alternatively,
the size of the reserved resource has a scaling factor relative to the size of the resource occupied by the second service data, or has no change.
10. The method of claim 9,
the relative time domain position of the reserved resource is the same as the relative time domain position of a first resource, the frequency domain position of the reserved resource is the same as the frequency domain position of the first resource, and the size of the reserved resource is the same as that of the first resource; or the like, or, alternatively,
the relative time domain position of the reserved resource has a first deviation from the relative time domain position of the first resource, and/or the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource; the reserved resource and the first resource have the same size;
wherein the first resource is a resource occupied by the second service data, the relative time domain position of the first resource is a relative position of the time domain position of the first resource in a time unit, and the relative time domain position of the second resource is a relative position of the time domain position of the second resource in the time unit.
11. The method of claim 10,
the first signaling also carries third information, where the third information is the MCS of the first service data, or the third information is a difference between the MCS of the second service data and the MCS of the first service data.
12. The method according to claim 9 or 10,
the first signaling also carries fourth information, and the fourth information is the scaling factor.
13. The method of claim 9 or 10, wherein the second traffic data is transmitted via a second resource;
the reserved resource is selected from a third resource, the frequency domain position of the third resource is the same as the frequency domain position of the second resource, and the relative position of the third resource in a time unit is the same as the relative position of the second resource in the time unit.
14. The method according to any one of claims 1 to 13, wherein the time domain information is used to indicate a time length occupied by the reserved resource, and specifically includes:
the time domain information includes a time domain starting position and a time length of the reserved resource, or includes a time domain starting position and a time domain ending position of the reserved resource.
15. The method according to any one of claims 1 to 14, wherein the frequency domain information is used to indicate a frequency domain bandwidth of the reserved resource, and specifically is:
the frequency domain information includes a frequency domain starting position and a frequency domain bandwidth of the reserved resource, or includes a frequency domain starting position and an end position of the reserved resource.
16. The method according to any of claims 1-15, wherein the first signaling is SCI, system message, RRC signaling or MAC signaling.
17. A terminal device, comprising:
a transceiver module, configured to send a first signaling to at least one second terminal device, where the first signaling is used to indicate time domain information and/or frequency domain information of a reserved resource, the time domain information is used to indicate a time length occupied by the reserved resource, and the frequency domain information is used to indicate a frequency domain bandwidth of the reserved resource;
the transceiver module is further configured to send first service data or control information on the reserved resource.
18. The terminal apparatus of claim 17, wherein the first signaling is used for indicating time domain information and/or frequency domain information of the reserved resources, and comprises:
The state of the first field of the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resources.
19. A terminal device according to claim 17 or 18, wherein said first signalling is further used to indicate one or any combination of the following information:
a channel corresponding to the reserved resource;
the reserved resources are for multiple transmissions of one transport block;
the reserved resource is for a single transmission of a plurality of transport blocks;
the reserved resources are used for data initial transmission or data retransmission; or the like, or, alternatively,
the reserved resources are for multicast traffic, broadcast traffic or unicast traffic.
20. A terminal device, comprising:
a processing module, configured to determine a parameter of a first signaling according to a reserved resource, where the parameter of the first signaling includes at least one of the following parameters: a resource for carrying the first signaling, a size of the first signaling, or an RNTI for scrambling CRC of the first signaling;
a transceiver module, configured to send a first signaling to at least one second terminal device, where a parameter of the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resource, the time domain information is used to indicate a time length occupied by the reserved resource, and the frequency domain information is used to indicate a frequency domain bandwidth of the reserved resource;
The transceiver module is further configured to send first service data or control information on the reserved resource.
21. The terminal apparatus according to claim 20, wherein the parameter of the first signaling is further used to indicate one or any combination of the following information:
a channel corresponding to the reserved resource;
the reserved resources are for multiple transmissions of one transport block;
the reserved resource is for a single transmission of a plurality of transport blocks;
the reserved resources are used for data initial transmission or data retransmission; or the like, or, alternatively,
the reserved resources are for multicast traffic, broadcast traffic or unicast traffic.
22. A terminal device according to any of claims 17 to 21, wherein the time domain information is further configured to indicate:
a time domain offset, which is a time interval from a time point of transmitting the first signaling to a starting time point of the reserved resource.
23. A terminal device according to any of claims 17 to 22, wherein the time domain information is further configured to indicate:
a resource reservation period, wherein the reserved resources are repeated in a time domain at intervals of the resource reservation period; and/or the presence of a gas in the gas,
And reserving the number of times, wherein the reserved number of times is the number of times that the reserved resource is repeated on the time domain at intervals of the resource reservation period.
24. A terminal device according to any of claims 17 to 23, wherein the first signalling does not include scheduling information for traffic data.
25. A terminal device according to any of claims 17 to 23, wherein the first signalling is further arranged to schedule second traffic data; the time domain information and/or the frequency domain information of the reserved resources include one or any combination of the following items:
the reserved resource has frequency hopping or does not have frequency hopping relative to the resource occupied by the second service data;
the position of the reserved resource has an offset relative to the position of the resource occupied by the second service data, or has no offset; or the like, or, alternatively,
the size of the reserved resource has a scaling factor relative to the size of the resource occupied by the second service data, or has no change.
26. The terminal apparatus according to claim 25,
the relative time domain position of the reserved resource is the same as the relative time domain position of a first resource, the frequency domain position of the reserved resource is the same as the frequency domain position of the first resource, and the size of the reserved resource is the same as that of the first resource; or the like, or, alternatively,
The relative time domain position of the reserved resource has a first deviation from the relative time domain position of the first resource, and/or the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource; the reserved resource and the first resource have the same size;
wherein the first resource is a resource occupied by the second service data, the relative time domain position of the first resource is a relative position of the time domain position of the first resource in a time unit, and the relative time domain position of the second resource is a relative position of the time domain position of the second resource in the time unit.
27. The terminal device according to claim 26,
the first signaling also carries third information, where the third information is the MCS of the first service data, or the third information is a difference between the MCS of the second service data and the MCS of the first service data.
28. A terminal device according to claim 25 or 26,
the first signaling also carries fourth information, and the fourth information is the scaling factor.
29. The terminal device according to claim 25 or 26, wherein the second traffic data is transmitted via a second resource;
The reserved resource is selected from a third resource, the frequency domain position of the third resource is the same as the frequency domain position of the second resource, and the relative position of the third resource in a time unit is the same as the relative position of the second resource in the time unit.
30. The terminal device according to any one of claims 17 to 29, wherein the time domain information is used to indicate a time length occupied by the reserved resource, and specifically includes:
the time domain information includes a time domain starting position and a time length of the reserved resource, or includes a time domain starting position and a time domain ending position of the reserved resource.
31. The terminal device according to any one of claims 17 to 30, wherein the frequency domain information is used to indicate a frequency domain bandwidth of the reserved resource, and specifically is:
the frequency domain information includes a frequency domain starting position and a frequency domain bandwidth of the reserved resource, or includes a frequency domain starting position and an end position of the reserved resource.
32. A terminal device according to any of claims 17 to 31, wherein the first signalling is SCI, System message, RRC signalling or MAC signalling.
33. A computer-readable storage medium, characterized in that it stores a computer program which, when run on a computer, causes the computer to perform the method according to any one of claims 1 to 16.
34. A communication apparatus, characterized in that the communication apparatus comprises:
a memory: for storing instructions;
a processor configured to retrieve and execute the instructions from the memory, so that the communications apparatus is installed to implement the method of any one of claims 1 to 16.
35. A computer program product, characterized in that it comprises a computer program which, when run on a computer, causes the computer to carry out the method according to any one of claims 1 to 16.
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| PCT/CN2020/093410 WO2021000679A1 (en) | 2019-06-29 | 2020-05-29 | Communication method and device |
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| CN201910581379.2A CN112153705B (en) | 2019-06-29 | 2019-06-29 | Communication method and device |
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| CN112153705B (en) | 2024-04-09 |
| WO2021000679A1 (en) | 2021-01-07 |
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