CN115707118A - Resource sharing method and communication device - Google Patents

Resource sharing method and communication device Download PDF

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Publication number
CN115707118A
CN115707118A CN202110903305.3A CN202110903305A CN115707118A CN 115707118 A CN115707118 A CN 115707118A CN 202110903305 A CN202110903305 A CN 202110903305A CN 115707118 A CN115707118 A CN 115707118A
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China
Prior art keywords
terminal device
information
resource
time
data
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CN202110903305.3A
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Chinese (zh)
Inventor
黄海宁
黎超
张天虹
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN202110903305.3A priority Critical patent/CN115707118A/en
Priority to PCT/CN2022/107441 priority patent/WO2023011218A1/en
Publication of CN115707118A publication Critical patent/CN115707118A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/52—Allocation or scheduling criteria for wireless resources based on load
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/563—Allocation or scheduling criteria for wireless resources based on priority criteria of the wireless resources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The application discloses a resource sharing method and a communication device, wherein the method comprises the following steps: the first terminal device transmits the first instruction information to the second terminal device, and receives the first request information from the second terminal device, and transmits the second instruction information to the second terminal device. Wherein the first indication information is used for indicating a first resource of the first terminal device. The first request information may include one or more of the following information: first information, first time information, or first priority information. The second indication information includes one or more of the following information: third information, shared time information, offset information, or identification information. In this embodiment, when the second terminal device needs to share the first resource, the second terminal device may request sharing of the first resource through the first request information. The first terminal equipment responds to the first request information and indicates which resources in the first resources can be shared by the second terminal device, so that the reliability of the sideline data transmission of the second terminal equipment can be improved.

Description

Resource sharing method and communication device
Technical Field
The present application relates to the field of resource sharing technologies, and in particular, to a method and a communication device for resource sharing of a sidelink.
Background
The network device and the terminal device may share resources, and taking the example that the network device shares the channel resource allocated to the terminal device, the terminal device may notify the network device of the shared information, such as whether the channel resource can be shared or not, and the duration of the sharable channel resource. The network device may use the channel resource according to the shared information. In communication between a network device and a terminal device, the terminal device transmits information to the network device or receives information from the network device after receiving a Physical Downlink Control Channel (PDCCH) from the network device. Since the network device knows where the terminal device receives the PDCCH, the network device can explicitly share the starting location of the resource.
In some scenarios, however, the two communicating parties do not know in advance when the other party is sending information. For example, in Sidelink (SL), each other does not know when the other is transmitting information. If a method of sharing resources between a network device and a terminal device is used among a plurality of terminal devices in a sidelink, resource conflict may be caused.
Disclosure of Invention
The application provides a resource sharing method and a communication device, which are used for reducing or avoiding the conflict of resource sharing of a plurality of terminal devices in a sidelink.
In a first aspect, a resource sharing method may be performed by a first communication apparatus, which may be a communication device, such as a terminal device, or a communication apparatus capable of supporting a communication device to implement functions required by the method, such as a system on a chip. The following description will be given taking the communication apparatus as the first terminal device as an example. The method comprises the following steps:
the first terminal device sends the first indication information to the second terminal device, receives the first request information from the second terminal device, and sends the second indication information to the second terminal device. Wherein the first indication information is used for indicating a first resource of the first terminal device. The first request information may include one or more of the following information: first information, first time information, or first priority information. The first information is used to indicate that the second terminal device requests to use the first resource. The first time information is used for indicating the time domain length of a second resource, and the second resource is a part of the first resource. The first priority information is used for indicating the priority of data to be transmitted by the second terminal device. The second indication information includes one or more of the following information: third information, shared time information, offset information, or identification information. Wherein the third information is used to indicate whether the second terminal device is capable of using the first resource. The shared time information includes third time information indicating a time domain length of a third resource, which is a partial resource of the first resource. The offset information includes a first offset value used to determine a time domain starting position of the third resource. The identification information includes a first identification indicating the second terminal device.
In this scheme, the first terminal apparatus notifies the second terminal apparatus that the first terminal apparatus has a first resource that can be shared, for example, a Channel Occupancy Time (COT) of the first terminal apparatus. The COT can be understood as a time domain resource corresponding to the COT, a frequency domain resource corresponding to the COT, and a time frequency resource corresponding to the COT. When the second terminal device has a need to share the first resource, the second terminal device may request to share a part of the first resource, for example, the second resource, through the first request information. The first terminal device responds to the first request information, namely sends second indication information to the second terminal device to indicate that the second terminal device can share the first resource, so that the high priority and the service quality of the sideline data transmission of the second terminal device are improved, and the flexibility of resource utilization is improved. In addition, the second indication information indicates a starting time domain position and a time domain length of a third resource in the first resource, which are allowed to be shared by the second terminal device, so that resource conflict caused when the first resource is shared by other terminal devices is avoided.
In one possible implementation, the method further includes: the first terminal device transmits the first instruction information to the third terminal device, and receives the second request information from the third terminal device. Wherein the second request information comprises one or more of the following information: second information, second time information, or second priority information. The third information is used to indicate that the third terminal device requests to use the first resource. The second time information is used for indicating the time domain length of a fourth resource, and the fourth resource is a part of the first resource. The second priority information is used to indicate the priority of the data to be transmitted by the third terminal device. It is to be understood that the first terminal device may also inform a plurality of terminal devices that the first terminal device has the first resource that can be shared. Therefore, if a terminal device needing to share the first resource is selected from the plurality of terminal devices, the first resource of the first terminal device can be requested to be shared, so that the resource utilization rate is improved.
In one possible implementation, the method further includes: and sending second indication information to the third terminal device, wherein the third information is also used for indicating whether the third terminal device can use the first resource. The shared time information further includes fourth time information, where the fourth time information is used to indicate a time domain length of a fifth resource, and the fifth resource is a partial resource of the first resource. The offset information further comprises a second offset value, and the second offset value and/or the third time information is used for determining a time domain starting position of the fifth resource. The identification information further includes a second identification indicating a third terminal device. In this solution, the first terminal device further responds to the second request message of the third terminal device, that is, sends second indication message to the third terminal device, where the second indication message is used to indicate a starting time domain position and a time domain length allowing the third terminal device to share the fifth resource in the first resource, so as to avoid resource collision when the second terminal device and the third terminal device share the first resource.
In one possible implementation manner, the first terminal device sends the second indication information to the second terminal device, where the second indication information includes one or more of the following conditions: the priority of the data to be sent by the second terminal device is higher than that of the data sent by the first terminal device; the priority of the data to be sent by the second terminal device is higher than the first preset priority threshold. In the scheme, the first terminal device can determine whether to share the first resource to the second terminal device so as to meet the requirement of the second terminal device as much as possible, and simultaneously, the balance of channel sharing and channel access is ensured to a certain extent. For example, the priority of the data to be transmitted by the second terminal device is higher than the priority of the data transmitted by the first terminal device, and the first terminal device allows the second terminal device to share the first resource. The time delay requirement of the data to be sent of the second terminal device is met, and the reliability of the data to be sent with higher priority is improved. For another example, although the priority of the data to be transmitted by the second terminal device is higher than the priority of the data of the first terminal device, the latency requirement of the second terminal device may be looser than the latency requirement of the data transmitted by the first terminal device. If the second terminal device shares the first resource of the first terminal device, the remaining resource in the first resource may not meet the delay requirement of the data sent by the first terminal device. Therefore, when the priority of the data to be sent by the second terminal device is higher than the first preset priority threshold, the first resource of the first terminal device is shared, so as to ensure the balance of channel access and channel sharing as much as possible.
In a possible implementation manner, the time domain resource carrying the first request information is the same as the time domain resource carrying the hybrid automatic repeat request (HARQ). The frequency domain resource carrying the first request information is different from the frequency domain resource carrying the HARQ, and/or the code domain resource carrying the first request information is different from the code domain resource carrying the HARQ. In this scheme, the second terminal apparatus transmits the HARQ and the first request information by using a frequency division multiplexing or code division multiplexing method. The number of transceive transitions of the first terminal device may be reduced, thereby reducing the risk of failing to access the channel.
For example, the code domain resource carrying the first request information and the code domain resource carrying the HARQ are different, including: the first request information is transmitted using a first Cyclic Shift (CS), and the HARQ is transmitted using a second CS. The first CS and the second CS are different.
For example, the code domain resource carrying the first request information and the code domain resource carrying the HARQ are different, including: the first request information is transmitted using a first root sequence, and the HARQ is transmitted using a second root sequence. The first root sequence and the second root sequence are different.
Exemplarily, the frequency domain resource carrying the first request information and the frequency domain resource carrying the HARQ are different, including: the first request information is transmitted using a first Resource Block (RB), and the HARQ is transmitted using a second RB. The first RB and the second RB are different.
In a possible implementation manner, the time domain resource carrying the second indication information is the same as the time domain resource carrying the HARQ. And/or the code domain resource bearing the second indication information is different from the code domain resource bearing the HARQ.
In a second aspect, a resource sharing method is provided, which may be performed by a second communication apparatus, which may be a communication device, such as a terminal device, or a communication apparatus capable of supporting a communication device to implement functions required by the method, such as a system on a chip. The following description will be given taking the communication apparatus as the second terminal device as an example. The method comprises the following steps:
the second terminal device receives the first indication information from the first terminal device, and transmits the first request information to the first terminal device, and receives the second indication information from the first terminal device. Wherein the first indication information is used for indicating a first resource of the first terminal device. The first request information includes one or more of the following information: first information, first time information, or first priority information. The first information is used to indicate that the second terminal device requests to use the first resource. The first time information is used for indicating the time domain length of a second resource, and the second resource is a part of the first resource. The first priority information is used to indicate the priority of the data to be transmitted by the second terminal device. The second indication information includes one or more of the following information: third information, shared time information, offset information, or identification information. Wherein the third information is used to indicate whether the second terminal device is able to use the first resource. The shared time information includes third time information indicating a time domain length of a third resource, which is a partial resource of the first resource. The offset information includes a first offset value used to determine a time domain starting position of the third resource. The identification information includes a first identification indicating the second terminal device.
In a possible implementation, the third information is further used to indicate whether the third terminal device is capable of using the first resource. The shared time information further includes fourth time information, where the fourth time information is used to indicate a time domain length of a fifth resource, and the fifth resource is a partial resource of the first resource. The offset information further includes a second offset value, and the second offset value and/or the third time information are used to determine a time domain starting position of the fifth resource. The identification information further includes a second identification indicating a third terminal device.
In one possible implementation, one or more of the following is satisfied, and the second terminal device sends the first request information to the first terminal device: the second terminal device successfully receives the data from the first terminal device; the priority of the data to be sent by the second terminal device is higher than that of the data sent by the first terminal device; the priority of the data to be sent of the second terminal device is higher than a first preset priority threshold; the number of Listen Before Talk (LBT) failures performed by the second terminal device is greater than a second preset threshold, and the LBT failure is that the channel is not idle.
In a possible implementation manner, the time domain resource carrying the first request information is the same as the time domain resource carrying the HARQ. The frequency domain resource carrying the first request information is different from the frequency domain resource carrying the HARQ, and/or the code domain resource carrying the first request information is different from the code domain resource carrying the HARQ.
In a possible implementation manner, the time domain resource carrying the second indication information is the same as the time domain resource carrying the HARQ. And/or the code domain resource bearing the second indication information is different from the code domain resource bearing the HARQ.
With regard to the technical effects brought by the second aspect or various possible implementations of the second aspect, reference may be made to the description of the technical effects of the first aspect and various possible implementations of the first aspect, and details are not repeated here.
In a third aspect, a resource sharing method is provided, which may be performed by a first communication apparatus, which may be a communication device, such as a terminal device, or a communication apparatus capable of supporting a communication device to implement functions required by the method, such as a system on a chip. The following description will be given taking the communication apparatus as a first terminal device as an example. The method comprises the following steps:
the first terminal device sends first indication information to the second terminal device and receives first request information from the second terminal device; the first terminal device, upon receiving the first request message, stops transmitting data using the remaining resource of the first resource. The first indication information is used to indicate a first resource of the first terminal device, for example, an initial COT of the first terminal device. The first request information may include one or more of the following information: first information, first time information, or first priority information. The first information is used to indicate that the second terminal device requests use of the first resource. The first time information is used for indicating the time domain length of a second resource, and the second resource is a part of the first resource. The first priority information is used for indicating the priority of data to be transmitted by the second terminal device. In this solution, the first terminal device receives the first request information of the second terminal device, and if the first request information includes the first information, the remaining resource in the first resource may be shared to the second terminal device by default, that is, the remaining resource in the first resource is no longer used to transmit data. The second terminal device does not need to send the first time information and/or the first priority information, signaling overhead is reduced, signaling design is simple, the first terminal device does not use the remaining resources of the first resources any more, extra response signaling is not needed, and signaling interaction is reduced.
In a fourth aspect, a resource sharing method is provided, which may be performed by a second communication apparatus, which may be a communication device, such as a terminal device, or a communication apparatus capable of supporting a communication device to implement functions required by the method, such as a system-on-chip. The following description will be given taking the communication apparatus as the second terminal device as an example. The method comprises the following steps:
the second terminal device receives the first instruction information from the first terminal device and transmits the first request information to the first terminal device. Wherein the first indication information is used for indicating the first resource first request information of the first terminal device, and may include one or more of the following information: first information, first time information, or first priority information. The first information is used to indicate that the second terminal device requests to use the first resource. The first time information is used for indicating the time domain length of a second resource, and the second resource is a part of the first resource. The first priority information is used to indicate the priority of the data to be transmitted by the second terminal device. In this scheme, when the second terminal device has a requirement for sharing the first resource, the second terminal device may request to share the first resource, so as to improve the resource utilization rate.
In one possible implementation, one or more of the following are satisfied, and the second terminal device sends the first request information to the first terminal device: the second terminal device successfully receives the data sent by the first terminal device; the priority of the data to be sent by the second terminal device is higher than that of the data sent by the first terminal device; the priority value of the data to be sent of the second terminal device is higher than a first preset priority threshold; the number of times of LBT failure of the second terminal device is higher than a second preset threshold, and the result of the LBT failure is that the channel is not idle.
In a possible implementation manner, the time domain resource carrying the first request information is the same as the time domain resource carrying the HARQ, where the frequency domain resource carrying the first request information is different from the frequency domain resource carrying the HARQ, and/or the code domain resource carrying the first request information is different from the code domain resource carrying the HARQ.
With regard to the fourth aspect or the technical effects brought by various possible embodiments of the fourth aspect, reference may be made to the description of the technical effects of the embodiments of the third aspect, which is not described herein again.
In a fifth aspect, a resource sharing method is provided, which may be performed by a first communication apparatus, which may be a communication device, such as a terminal device, or a communication apparatus capable of supporting a communication device to implement functions required by the method, such as a system on a chip. The following description will be given taking the communication apparatus as a first terminal device as an example. The method comprises the following steps:
the first terminal device determines the third indication information and transmits the third indication information to the second terminal device. Wherein the third indication information includes shared time information and identification information. The shared time information includes fifth time information indicating a time domain length of the sixth resource. The sixth resource is a part of or all of the first resource of the first terminal apparatus. The sixth resource is used for the second terminal device to transmit data. The identification information includes a first identification indicating the second terminal device. In this scheme, the first terminal device may share the first resource to the second terminal device, and indicate which resources of the first resource are shared to the second terminal device, so as to improve resource utilization.
In one possible implementation manner, the sending, by the first terminal device, the third indication information to the second terminal device includes:
the first terminal device transmits the third instruction information to a plurality of terminal devices including the second terminal device and the third terminal device. Wherein the shared time information further includes sixth time information, and the sixth time information is used for indicating a time domain length of the seventh resource. The seventh resource is a part of or all of the first resource of the first terminal device, and the seventh resource is used for the third terminal device to transmit data. The identification information further includes a second identification for indicating the third terminal device. The third indication information further includes offset information, the offset information is used for determining a start position of the sixth resource, and the offset information and the shared time information are used for determining a time domain start position of the seventh resource. In this scheme, the first terminal device may decide which resources of the first resources are shared by the plurality of terminal devices, thereby avoiding resource conflicts when the terminal devices share the first resources.
In one possible implementation, the method further includes: the first terminal device receives the third request information from the second terminal device. The third request information is used to determine third indication information. The third request information includes priority information and/or latency information. The priority information is used for indicating the priority of the data to be transmitted by the second terminal device. The delay information is used to indicate a delay of the data to be transmitted by the second terminal device. In this scenario, the third request message may include some reference information, such as priority information, delay information, etc., for the first terminal device to decide which of the first resources to share for the second terminal device. In this way, reasonable resources can be shared for the second terminal device to meet the delay requirement of the second terminal device.
In one possible implementation manner, the first terminal device sends third indication information to the second terminal device, where the third indication information includes one or more of the following conditions: the first terminal device receives fourth indication information from the network equipment, wherein the fourth indication information is used for indicating that the second terminal device can share the first resource; the first terminal device does not receive the retransmission of the first data within a first time length after sending the HARQ message of the first data; and the HARQ message of the second data is not received in a second time length after the first terminal device sends the second data. In this scheme, the first terminal device may determine a scenario in which the first resource is shared with the second terminal device, so as to ensure fairness of resource sharing among the terminal devices as much as possible. For example, the first terminal device may not receive the retransmission of the first data within the first time period after the first terminal device transmits the HARQ message of the first data, that is, the second terminal device may not have available resources to transmit the retransmission data within the first time period, and the first terminal device may share the first resources with the second terminal device.
In a sixth aspect, a resource sharing method is provided, which may be performed by a second communication apparatus, which may be a communication device, such as a terminal device, or a communication apparatus capable of supporting a communication device to implement functions required by the method, such as a system on a chip. The following description will be given taking the communication apparatus as a second terminal device as an example. The method comprises the following steps:
the second terminal device receives the third indication information from the first terminal device and transmits data on the sixth resource according to the third indication information. Wherein the third indication information includes shared time information and identification information. The shared time information includes fifth time information, where the fifth time information is used to indicate a time domain length of sixth resources, and the sixth resources are part or all of the first resources of the first terminal apparatus. The identification information includes a first identification indicating the second terminal device.
In a possible implementation manner, the shared time information further includes sixth time information, and the sixth time information is used for indicating a time domain length of the seventh resource. The seventh resource is a part of or all of the first resource of the first terminal device, and the seventh resource is used for the third terminal device to transmit data. The identification information further includes a second identification indicating a third terminal device. The third indication information further includes offset information for determining a start position of the sixth resource. The offset information and the shared time information are used to determine a time domain starting position of the seventh resource.
In a possible implementation manner, the sending, by the second terminal device, data on the sixth resource according to the third indication information includes: and the LBT is carried out, the channel is idle, and data is sent on the sixth resource.
In one possible implementation, the method further includes: the second terminal device transmits the third request information to the first terminal device. The third request information is used to determine third indication information. The third request information includes priority information and/or latency information. The priority information is used for indicating the priority of the data to be transmitted by the second terminal device. The delay information is used to indicate a delay of the data to be transmitted by the second terminal device.
With regard to the technical effects brought by the sixth aspect or various possible embodiments of the sixth aspect, reference may be made to the description of the technical effects of the fifth aspect or various embodiments of the fifth aspect, and no further description is given here.
In a seventh aspect, an embodiment of the present application provides a communication device, where the communication device has a function of implementing the behavior in the method example of the first aspect, and for beneficial effects, reference may be made to the description of the first aspect and details are not repeated here. The communication device may be the first terminal device in the first aspect, or the communication device may be a device, such as a chip or a system of chips, capable of supporting the functions required by the first terminal device in the first aspect to implement the method provided by the first aspect.
In one possible design, the communication device includes corresponding means (means) or modules for performing the method of the first aspect. For example, the communication device: including a processing unit (also sometimes referred to as a processing module or processor) and/or a transceiver unit (also sometimes referred to as a transceiver module or transceiver). These units (modules) may perform corresponding functions in the method example of the first aspect, for specific reference, detailed description of the method example is given, and details are not repeated here.
Or, the communication apparatus has a function of implementing the behavior in the method example of the third aspect, and beneficial effects may refer to the description of the third aspect and are not described herein again. The communication device may be the first terminal device in the third aspect, or the communication device may be a device, such as a chip or a system of chips, capable of supporting the functions required by the first terminal device in the third aspect to implement the method provided by the third aspect.
In one possible design, the communication device includes corresponding means (means) or modules for performing the method of the third aspect. For example, the communication device: including a processing unit (also sometimes referred to as a processing module or processor) and/or a transceiving unit (also sometimes referred to as a transceiving module or transceiver). These units (modules) may perform corresponding functions in the method example of the third aspect, for specific reference, detailed description of the method example is given, and details are not repeated here.
Or, the communication apparatus has a function of implementing the behavior in the method example of the fifth aspect, and beneficial effects may be referred to the description of the fifth aspect and will not be described herein again. The communication device may be the first terminal device in the fifth aspect, or the communication device may be a device, such as a chip or a system-of-chips, capable of supporting the functions required by the first terminal device in the fifth aspect to implement the method provided by the fifth aspect.
In one possible design, the communication device includes corresponding means (means) or modules for performing the method of the fifth aspect. For example, the communication device: including a processing unit (also sometimes referred to as a processing module or processor) and/or a transceiver unit (also sometimes referred to as a transceiver module or transceiver). These units (modules) may perform corresponding functions in the method example of the fifth aspect, for specific reference, detailed description of the method example is given, and details are not repeated here.
In an eighth aspect, an embodiment of the present application provides a communication apparatus, where the communication apparatus has a function of implementing the behavior in the method example of the second aspect, and for beneficial effects, reference may be made to description of the second aspect and details are not repeated here. The communication device may be the second terminal device in the second aspect, or the communication device may be a device, such as a chip or a system-of-chips, capable of supporting the functions required by the second terminal device in the second aspect to implement the method provided by the second aspect.
In one possible design, the communication device includes corresponding means (means) or modules for performing the method of the second aspect. For example, the communication device: including a processing unit (also sometimes referred to as a processing module or processor) and/or a transceiving unit (also sometimes referred to as a transceiving module or transceiver). These units (modules) may perform corresponding functions in the method example of the second aspect, for specific reference, detailed description of the method example is omitted here for brevity.
Alternatively, the communication apparatus has a function of implementing the behavior in the method example of the fourth aspect, and for beneficial effects, reference may be made to the description of the third aspect, which is not described herein again. The communication device may be the second terminal device in the fourth aspect, or the communication device may be a device, such as a chip or a system of chips, capable of supporting the functions required by the second terminal device in the fourth aspect to implement the method provided by the fourth aspect.
In one possible design, the communication device includes corresponding means (means) or modules for performing the method of the fourth aspect. For example, the communication device: including a processing unit (also sometimes referred to as a processing module or processor) and/or a transceiving unit (also sometimes referred to as a transceiving module or transceiver). These units (modules) may perform corresponding functions in the method example of the fourth aspect, for specific reference, detailed description of the method example is omitted here for brevity.
Alternatively, the communication apparatus has a function of implementing the behavior in the method example of the above sixth aspect, and beneficial effects may be referred to the description of the fifth aspect and will not be described herein again. The communication device may be the second terminal device in the sixth aspect, or the communication device may be a device, such as a chip or a system of chips, capable of supporting the functions required by the second terminal device in the sixth aspect to implement the method provided by the sixth aspect.
In one possible design, the communication device comprises corresponding means (means) or modules for performing the method of the sixth aspect. For example, the communication device: including a processing unit (also sometimes referred to as a processing module or processor) and/or a transceiver unit (also sometimes referred to as a transceiver module or transceiver). These units (modules) may perform corresponding functions in the method example of the sixth aspect, for specific reference, detailed description of the method example is omitted here for brevity.
Ninth, an embodiment of the present application provides a communication device, which may be the communication device in the seventh or eighth aspect of the above embodiments, or a chip system provided in the communication device in the seventh or eighth aspect. The communication device comprises a communication interface, a processor and optionally a memory. Wherein the memory is adapted to store computer programs or instructions or data, the processor is coupled to the memory and the communication interface, and when the processor reads the computer programs or instructions or data, the processor causes the communication device to perform the method performed by the first terminal device in the above method embodiments or to perform the method performed by the second terminal device in the above method embodiments.
In a tenth aspect, an embodiment of the present application provides a communication apparatus including an input/output interface and a logic circuit. The input/output interface is used for inputting and/or outputting information. The logic circuitry is configured to perform the method of any one of the first to sixth aspects.
In an eleventh aspect, an embodiment of the present application provides a chip system, where the chip system includes a processor, and may further include a memory and/or a communication interface, and is configured to implement the method in the first aspect, the third aspect, or the fifth aspect. In one possible implementation, the system-on-chip further includes a memory to store a computer program. The chip system may be formed by a chip, and may also include a chip and other discrete devices.
In a twelfth aspect, an embodiment of the present application provides a chip system, where the chip system includes a processor, and may further include a memory and/or a communication interface, and is configured to implement the method in the second aspect, the fourth aspect, or the sixth aspect. In one possible implementation, the system-on-chip further includes a memory to store a computer program. The chip system may be formed by a chip, and may also include a chip and other discrete devices.
In a thirteenth aspect, an embodiment of the present application provides a communication system, where the communication system includes the communication apparatus in the seventh aspect for implementing the method in the first aspect, and the communication apparatus in the eighth aspect for implementing the method in the second aspect. Alternatively, the communication system comprises the communication device in the seventh aspect for implementing the method in the third aspect and the communication device in the eighth aspect for implementing the method in the fourth aspect. Alternatively, the communication system comprises the communication device in the seventh aspect for implementing the method in the fifth aspect and the communication device in the eighth aspect for implementing the method in the sixth aspect.
In a fourteenth aspect, the present application provides a computer-readable storage medium storing a computer program which, when executed, implements the method of any one of the first to sixth aspects.
In a fifteenth aspect, a computer program product is provided, the computer program product comprising: computer program code which, when executed, causes the method of any of the first to sixth aspects described above to be performed.
Advantageous effects of the seventh to fifteenth aspects and their implementations described above may be referred to the description of the first or third or fifth aspect or the advantageous effects of the first or third or fifth aspect and their implementations.
Drawings
Fig. 1 is an exemplary architecture diagram of a communication system to which embodiments of the present application are applicable;
fig. 2 is a schematic flowchart illustrating a first resource sharing method according to an embodiment of the present application;
fig. 3 is a schematic diagram illustrating state switching between data transmission and data reception of a first terminal device according to an embodiment of the present application;
fig. 4 is a schematic configuration diagram of resources for transmitting HARQ according to an embodiment of the present application;
fig. 5 is a schematic diagram of determining one candidate resource for transmitting HARQ from a candidate resource set for transmitting HARQ according to an embodiment of the present application;
fig. 6A is a schematic diagram illustrating that a first terminal device and a second terminal device share a first resource in an embodiment of the present application;
fig. 6B is another schematic diagram illustrating that a first terminal device and a second terminal device share a first resource in an embodiment of the present application;
fig. 7 is a flowchart illustrating a second resource sharing method according to an embodiment of the present application;
fig. 8A is a schematic diagram illustrating that a first terminal device and a second terminal device share a first resource in an embodiment of the present application;
fig. 8B is a schematic diagram illustrating that a first terminal device, a second terminal device, and a third terminal device share a first resource in an embodiment of the present application;
fig. 9A is a schematic diagram of a first structure of second indication information provided in an embodiment of the present application;
fig. 9B is a second structural diagram of second indication information provided in the embodiment of the present application;
fig. 9C is a third schematic structural diagram of second indication information provided in the embodiment of the present application;
FIG. 10 is a structural diagram of second indicating information provided by an embodiment of the present application;
fig. 11 is a flowchart illustrating a third resource sharing method according to an embodiment of the present application;
fig. 12 is a schematic structural diagram of a communication device according to an embodiment of the present application;
fig. 13 is a schematic structural diagram of a communication device according to an embodiment of the present application;
fig. 14 is a schematic structural 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 technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
In order to facilitate understanding of technical solutions provided by the embodiments of the present application, a part of technical terms related to the embodiments of the present application is first explained.
1) The network device is an access device that the terminal device accesses to the mobile communication system in a wireless manner, and includes a Radio Access Network (RAN) device, such as a base station. The network device may also refer to a device that communicates with the terminal device over the air interface. The network device may include an evolved Node B (eNB or e-NodeB) in a Long Term Evolution (LTE) system or an LTE-advanced (LTE-a) system. An eNB is a device deployed in a radio access network and meeting the fourth generation mobile communication technology (4G) standard, and provides a wireless communication function for a terminal device. The network device may also be a new radio controller (NR controller), which may be a enode B (gNB) in a 5G system, a centralized network element (centralized unit), a new radio base station, a radio remote module, a micro base station (also called a small station), a relay (relay), a distributed network element (distributed unit), a macro base station in various forms, a Transmission Reception Point (TRP), a Transmission Measurement Function (TMF), a Transmission Point (TP), or any other radio access device, and the embodiment of the present application is not limited thereto. The network device may also include a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home base station (e.g., home evolved NodeB or home Node B, HNB), a Base Band Unit (BBU), or a wireless fidelity (Wifi) Access Point (AP). The embodiments of the present application do not limit the specific technologies and the specific device forms used by the network devices. The network device may correspond to an eNB in a 4G system and correspond to a gNB in a 5G system.
In addition, the base station in the embodiment of the present application may include a Centralized Unit (CU) and a Distributed Unit (DU), and a plurality of DUs may be centrally controlled by one CU. The CU and the DU may be divided according to the protocol layer functions of the wireless network, for example, functions of a Packet Data Convergence Protocol (PDCP) layer and protocol layers above the PDCP layer are provided in the CU, and functions of protocol layers below the PDCP layer, for example, a Radio Link Control (RLC) layer and a Medium Access Control (MAC) layer, are provided in the DU. It should be noted that this division of the protocol layers is only an example, and may be divided in other protocol layers. The radio frequency device may be remote, not placed in the DU, or integrated in the DU, or partially remote and partially integrated in the DU, which is not limited in this embodiment of the present application. In addition, in some embodiments, the Control Plane (CP) and the user plane (user plane, UP) of the CU may be separated and implemented as separate entities, namely, a control plane CU entity (CU-CP entity) and a user plane CU entity (CU-UP entity). In the network architecture, the signaling generated by the CU may be sent to the terminal device through the DU, or the signaling generated by the UE may be sent to the CU through the DU. The DU may pass through the protocol layer encapsulation directly to the terminal device or CU without parsing the signaling. In the network architecture, a CU is divided into network devices on a RAN side, and in addition, the CU may also be divided into network devices on a Core Network (CN) side, which is not limited in the present application.
2) The terminal device has a wireless transceiving function and can transmit signals to the network equipment or receive signals from the network equipment. A terminal apparatus may include a User Equipment (UE), sometimes referred to as a terminal equipment, a terminal, an access station, a UE station, a distant station, a wireless communication device, or a user equipment, among others. In the embodiments of the present application, unless otherwise specified, the terminal device and the terminal apparatus are the same in the following. The terminal device is used for connecting people, objects, machines and the like, and can be widely used in various scenes, such as but not limited to the following scenes: cellular communication, D2D, V2X, machine-to-machine/machine-type communication (M2M/MTC), internet of things (IoT), virtual Reality (VR), augmented Reality (AR), industrial control (industrial control), unmanned driving (self), remote medical (remote medical), smart grid (smart grid), smart furniture, smart office, smart wearing, smart traffic, city (smart city), unmanned aerial vehicle, robot, and the like.
For example, the terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal, an Augmented Reality (AR) terminal, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a smart speaker in IoT network, a wireless terminal device in telemedicine, a wireless terminal device in smart grid, a wireless terminal device in transportation security, a wireless terminal device in smart city, or a wireless terminal device in smart home, and the like. By way of example and not limitation, in 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..
The terminal device may also include a relay (relay). Or, it is understood that any device capable of data communication with a base station may be considered a terminal device. The various terminal devices described above, if located on a vehicle (e.g. placed in or mounted in a vehicle), may be considered as vehicle-mounted terminal devices, also referred to as on-board units (OBUs), for example. The terminal device 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, on-board component, on-board chip, or on-board unit. Direct communication (PC 5) interface communication is supported between terminal devices, namely transmission through a sidelink is supported.
In addition, in this embodiment, the terminal device may refer to a device for implementing a function of the terminal, or may be a device capable of supporting the terminal device to implement the function, such as a chip system, and the device may be installed in the terminal device. The terminal device may also be a vehicle detector, for example. In the embodiment of the present application, the chip system may be formed by a chip, and may also include a chip and other discrete devices. In the technical solution provided in the embodiment of the present application, a device for implementing a function of a terminal is taken as an example of a terminal device, and the technical solution provided in the embodiment of the present application is described.
3) Sidelink (SL) refers to a link established between devices of the same type, and may also be referred to as a side link or a sidelink. Referred to herein as a sidelink. The devices of the same type may be links from the terminal device to the terminal device, links from the network device to the network device, links from the relay node to the relay node, and the like, which are not limited in this embodiment of the present application.
For the link between the terminal equipment and the terminal equipment, there is the third generation partnership project (3) rd generation partnership project,3 GPP) release-12/13 device to device (D2D) links, as well as vehicle to everything (V2X) links defined by 3GPP for internet of vehicles. V2X includes vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), vehicle-to-pedestrian (V2P) direct communication, and vehicle-to-network (V2N) or vehicle-to-any entity V2X link, including Rel-14/15. V2X also includes Rel-16 and subsequent releases of NR system based V2X links currently under investigation by 3GPP, etc. V2V refers to inter-vehicle communication; V2P refers to vehicle-to-person (including pedestrians, cyclists, drivers, or passengers) communication; V2I refers to vehicle to roadside infrastructure communications, such as vehicle to roadside units (RSUs) or Road Side Units (RSUs), and further a V2N may be included in V2I, V2N refers to vehicle to base station/network communications. Among them, RSUs include 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.
4) Listen Before Talk (LBT), which is a back-off mechanism for channel access, may enable multiple devices to share the same spectrum resource. There are two classes of LBT, one is based on fixed duration LBT. Another class is back-off based LBT. A fallback based LBT may be considered an unfixed duration based LBT. That is, the device randomly selects a value a in a contention window, and after detecting at least a idle slots, it can determine that the channel is in an idle state, so as to occupy the channel, otherwise, it needs to contend for the channel again. The idle time slot refers to a time slot in which the energy of a signal detected in a channel is lower than a preset threshold. Fallback based LBT is also called Type1 LBT.
The LBT based on the fixed duration, that is, the device detects the fixed duration, and within the fixed duration, if the energy of the signal detected in the channel is lower than a preset threshold, the channel is considered to be in an idle state, so that the channel can be occupied, otherwise, the channel needs to be contended again. LBT based on fixed duration is divided into three types of LBT again, and the three types of LBT are Type2A LBT, type2B LBT and Type2C LBT. The Type2A LBT, the Type2B LBT, and the Type2C LBT are different in the fixed time period for detection (simply referred to as a detection fixed time period). Type2A LBT is within an interval (gap) of 25us, and the detection fixed time length is 9us. Type2B LBT is within 16us gap and the fixed duration of detection is at least 5us. And the Type2C LBT does not need to carry out LBT direct access channel under the condition that the gap is less than 16 us. The device can only use 584us for transmission at this time.
5) HARQ transmission is a common way to improve the reliability of the transmission. In HARQ transmission, that is, after the sender transmits information to the receiver for the first time, the receiver may send HARQ feedback information to the sender. The sending end determines whether to retransmit the information to the receiving end according to the received HARQ feedback information, and improves the transmission reliability of the information based on a Forward Error Correction (FEC) code. The HARQ feedback information includes an Acknowledgement (ACK) message or a Negative Acknowledgement (NACK) message. And after the transmitting end receives the NACK message from the receiving end, the transmitting end retransmits the information to the receiving end. For example, the receiving end receives information from the transmitting end, and when the receiving end fails to decode the information, i.e., fails to receive the information, the receiving end transmits a NACK message to the transmitting end. The transmitting end determines the NACK message from the receiving end and transmits the information to the receiving end again. The receiving end combines the information which is not successfully received in the initial transmission with the information which is received again in the retransmission, and decodes the information together. It is to be understood that HARQ is carried over PSFCH, and herein, as not specifically illustrated, resources used for transmitting PSFCH and resources used for transmitting HARQ may be replaced.
6) A Uu air interface, which may be abbreviated as Uu, is used for communication between a terminal device and an access network device. The Uu air interface may be understood as an interface between a universal UE and a network (universal UE to network interface). The transmission of the Uu air interface comprises uplink transmission and downlink transmission. Uplink transmission refers to the terminal device sending information to the network device. The information transmitted in the uplink may include a Physical Uplink Shared Channel (PUSCH), a Physical Uplink Control Channel (PUCCH), and the like. The PUSCH is used to carry uplink data, which may also be referred to as uplink data information. The PUCCH is used for carrying UCI fed back by the terminal equipment. Downlink transmission refers to the network device sending information to the terminal device. The downlink information may be downlink information or a downlink signal. The downlink information or downlink signal may include a Physical Downlink Shared Channel (PDSCH), a PDCCH, and the like. The PDSCH is used to carry downlink data (data), which may also be referred to as downlink data information. The PDCCH is used to carry Downlink Control Information (DCI).
7) "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated object, indicating that there may be three relationships, for example, a and/or B, which may indicate: 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 44. The contextual object is an "or" relationship. "at least one of the following" or similar expressions refer to any combination of the ten 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 terminal device and the second terminal device are only used for distinguishing different terminal devices, and do not indicate the difference of the priority or importance of the two terminal devices. In the embodiment of the application, if and if the replacement is carried out, if no special description is provided, "when 8230the" and "in the case of 8230the" can be replaced.
The foregoing describes some technical terms used in the embodiments of the present application, and the following describes the technical features used in the embodiments of the present application.
In the channel access process, the terminal device performs LBT, and after LBT succeeds, the terminal device accesses the channel and occupies a period of time, which may be referred to as a COT. The COT may be considered an initial COT of the terminal device. To improve resource utilization, the network device and the terminal device may share the COT. For example, the terminal device may send Uplink Control Information (UCI) to the network device, where the UCI includes COT sharing information. The COT sharing information may include information indicating whether to allow the COT sharing and may further include a duration of the COT sharing. The network device determines that the COT can be used according to the COT sharing information, and then transmits or receives data in the COT according to the time length of the shared COT. Communication between the network device and the terminal device, the terminal device transmits information to or receives information from the network device after receiving the PDCCH from the network device. That is, the network device serves as a controller, and the start position of the COT can be clearly shared. For example, the start position of the shared COT may be after the terminal device transmits a Configuration Grant (CG), the terminal device may automatically transmit a PUSCH, the terminal device may dynamically schedule a PUSCH transmission, or one gap of a PUSCH transmission on a configured resource.
There is also a need to improve resource utilization in possible scenarios, such as sidelink. For this reason, it is proposed to share the COT in the sidelink. However, the roles of the two communicating parties of the sidelink are the same, and each other does not know when the other party transmits data. If the method of sharing COT between network equipment and terminal equipment is used among a plurality of terminal equipment of a sidelink, resource conflict may be caused. Especially, when a plurality of terminal devices in the sidelink share the COT of one terminal device, the plurality of terminal devices preempt the COT of the terminal device, which is more likely to cause resource conflict.
In view of this, an embodiment of the present application provides a resource sharing method, in which a certain terminal device may actively notify other terminal devices of allowing sharing of a resource of the terminal device, for example, a COT, and indicate a starting position and a duration of allowing each terminal device to share the COT, so as to avoid resource conflict when the other terminal devices share the COT. Or, other terminal devices may actively request to share the COT of a certain terminal device, and the terminal device responds to the request of the other terminal device to inform the other terminal device of the start position and duration of allowing the COT to be shared, and may also avoid resource conflict caused when the other terminal device shares the COT. In the embodiment of the present application, a plurality of terminal devices share a COT as an example, and a frequency domain resource corresponding to the COT is not limited.
The resource sharing method provided by the embodiment of the application can be applied to various communication systems, for example: an LTE system, a 5G system, or a next generation communication system, such as a 6G system. Of course, the technical solution of the embodiment of the present application may also be applied to other communication systems as long as the communication system has a sidelink. In addition, the communication system may also be applied to future-oriented communication technologies, and the system described in the embodiment of the present application is for more clearly illustrating the technical solution of the embodiment of the present application, and does not form a limitation on the technical solution provided in the embodiment of the present application.
For example, please refer to fig. 1, which is a network architecture applied in the embodiment of the present application. Fig. 1 is an example of a network device including 2 terminal devices and 1 network device. The terminal devices in fig. 1 may communicate with or without a network infrastructure. For convenience of description, it is taken herein that the terminal device in fig. 1 is a vehicle-mounted terminal device, that is, it is taken as an example that the embodiment of the present application is applied to a V2X scene. The embodiment of the present application does not limit the specific form of the terminal device, and for example, the terminal device may also be a mobile phone.
In the following description, the resource sharing method provided in the embodiment of the present application is applied to the network architecture shown in fig. 1 and is applied to a transmission scenario of a sidelink 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 may be a terminal device or a communication device capable of supporting the terminal device to implement the functions required by the method, and may also be other communication devices, such as a system on a chip. The second communication device may be a terminal device or a communication device capable of supporting the terminal device to implement the functions required by the method, and may of course be other communication devices, such as a system on chip. And the implementation modes of the first communication device and the second communication device are not limited. For example, the first communication apparatus may be a certain terminal device, and the second communication apparatus is another terminal device; or the first communication means is a certain terminal device and the second communication means is a communication means capable of supporting the functions required by another terminal device to implement the method, etc.
In the following, it is exemplified that the method is performed by a first terminal device and a second terminal device, that is, that a first communication apparatus is a first terminal device and a second communication apparatus is a second terminal device. If the present embodiment is applied to the network architecture shown in fig. 1, both the first terminal device and the second terminal device described below may be terminal devices in the network architecture shown in fig. 1. It should be noted that the embodiment of the present application is only implemented by the first terminal device and the second terminal device, and is not limited to these two terminal devices. For example, the embodiments of the present application may be executed by more terminal devices. It should be understood that when more terminal devices are involved, the execution flow of each of the more terminal devices is the same. Hereinafter, at least one terminal device shares the COT of the first terminal device as an example. The first terminal device may actively share the initial COT to one or more terminal devices. One or more terminal devices may also actively request to share the COT of the first terminal device. The number of terminal devices actively sharing the COT of the first terminal device is different, and the behavior of the first terminal device is also different. For convenience of description, a method in which one terminal device requests to share the COT of the first terminal device is referred to as a first resource sharing method herein. A method in which at least one terminal device requests to share the COT of the first terminal device is referred to as a second resource sharing method. A method of actively sharing the COT by the first terminal device to at least one terminal device is referred to as a third resource sharing method.
It should be noted that, herein, the priority of the data is characterized by a priority value. The smaller the priority value of the data, the higher the priority of the data. For example, the priority value of the data may include {0,1,2,3,4,5,6,7}, the priority value of the data is 0, and the priority of the data is highest. For example, the priority of the data to be sent by the second terminal device is higher than the priority of the data sent by the first terminal device, that is, the priority value of the data to be sent by the second terminal device is smaller than the priority value of the data sent by the first terminal device (if there is no special description, the two are replaceable). The priority of the data to be sent by the second terminal device is higher than a certain priority threshold, that is, the priority value of the data to be sent by the second terminal device is smaller than a certain threshold.
In addition, the initial COT determined by the first terminal device is referred to as a first resource herein. It can be understood that the first resource is a time domain resource corresponding to the COT, or the first resource is a frequency domain resource corresponding to the COT, or the first resource is a time frequency resource corresponding to the COT. The frequency domain resource of the first resource may be PRB as a granularity and the subchannel as a granularity, and the present invention is not limited, and the frequency domain resource of the first resource is also not limited. The time domain unit of the COT may be a slot, a symbol, a subframe, and an absolute time (e.g., ms) without limitation in the present invention. It is understood that the first terminal device may transmit data to other terminal devices on the first resource, and the first terminal device finishes transmitting data to other terminal devices, and the first resource has available part of the resource. The other terminal device may request use of the first resource, i.e. request use of the part of the first resource. For convenience of description, hereinafter, the other terminal device requests to share a part of the first resource, which is referred to as the other terminal device requesting to share the first resource. That is, as not specifically stated, hereinafter, the request to share the first resource may be replaced with sharing a portion of the first resource. Of course, the time domain length of the resource requested to be shared by the other terminal device may be smaller than the time domain length of the portion of the resource in the first resource. In this case, the first resource has a remaining resource in addition to the resource shared to other terminal apparatuses. I.e. the remaining resources in the first resources may be considered to be resources in the first resources other than the part of the resources that the first terminal device has used and that are shared by other terminal devices.
Three resource sharing methods provided by the embodiments of the present application are respectively described below.
Please refer to fig. 2, which is a flowchart illustrating a first resource sharing method according to an embodiment of the present disclosure. The process shown in fig. 2 takes the second terminal device actively requesting to share the COT of the first terminal device as an example.
S201, the first terminal device sends first indication information to the second terminal device, and correspondingly, the second terminal device receives the first indication information.
The first indication information may indicate a first resource of the first terminal device, for example, an initial COT determined by LBT of the first terminal device in a channel access procedure. The first terminal device may transmit data or receive data on resources corresponding to the initial COT. The first terminal device can share the first resource with other terminal devices, so that the high priority and the service quality requirements of the sidestream data transmission of other terminal devices are improved. For example, the first terminal device may share the first resource to the second terminal device. However, the second terminal device is not aware of the first resources of the first terminal device. In this embodiment, the first terminal device may notify the second terminal device of the first resource of the first terminal device through the first indication information. Thus, the second terminal device may request the first terminal device for sharing the first resource of the first terminal device when the second terminal device has a need to share the first resource.
The sending mode of the first indication information includes the following several, and the embodiment of the present application does not limit how the first indication information is sent.
In the first transmission method, the first indication information may be carried in Sidelink Control Information (SCI). The first terminal device sends the first indication information to the second terminal device, which may also be considered as sending, by the first terminal device, an SCI to the second terminal device, where the SCI includes the first indication information. Optionally, a field in the SCI may be used to indicate the first indication information. The SCI may be a first-level SCI or a second-level SCI.
In a second transmission manner, the first indication information may be carried in a Media Access Control (MAC) Control Element (CE) or a PC5 Radio Resource Control (RRC) message.
In a third transmission manner, the first indication information may be carried in a Physical Sidelink Feedback Channel (PSFCH). The first terminal device sends the first indication information to the second terminal device, which may also be considered as that the first terminal device sends a PSFCH to the second terminal device, where the PSFCH includes the first indication information.
S202, the second terminal device sends first request information to the first terminal device, and correspondingly, the first terminal device receives the first request information.
The first request message may be for requesting sharing of a first resource of the first terminal device. The second terminal device may send a first request message to the first terminal device when it has a need to request sharing of the first resource of the first terminal device. For example, the second terminal device has data to send, and it may be understood that, for example, the second terminal device senses in the sideline resource pool through the LBT that the available resource is not monitored yet, and a sensing result within a certain time duration is that the channel is not idle, that is, the interference degree of channel sensing is higher than a certain threshold. For another example, the second terminal device LBT on the unlicensed spectrum, in a period of channel detection, the detection result is that the channel is not idle, that is, the channel interference level is higher than a certain threshold. It should be understood that when the second terminal device does not need to share the first resource of the first terminal device, the second terminal device does not need to send the first request information to the first terminal device, so as to reduce unnecessary signaling interaction and resource waste. The second terminal device may share the first resource of the first terminal device when one or more of the following conditions are satisfied. In other words, the second terminal device may transmit the first request information to the first terminal device when the second terminal device satisfies one or more of the following conditions.
Under the first condition, the priority of the data to be sent by the second terminal device is higher than the priority of the data sent by the first terminal device. That is, the priority of the data to be sent by the second terminal device is higher than the priority of the data sent by the first terminal device, and the second terminal device can send the first request information to the first terminal device, so that the time delay requirement of the data to be sent by the second terminal device is met, and the reliability of the data to be sent with higher priority is improved. It is understood that the priority of the data transmitted by the first terminal device is indicated by the SCI transmitted by the first terminal device, and the priority value indicated in the SCI is the priority value corresponding to the data transmitted by the first terminal device. The second terminal device can determine the priority of the data sent by the first terminal device according to the priority value indicated by the SCI.
And secondly, the second terminal device is an opposite terminal device of the first terminal device, that is, the first terminal device is used as a sending terminal, and the second terminal device is used as a receiving terminal of the first terminal device. It will be appreciated that the second terminal device successfully receives the data transmitted by the first terminal device, i.e. the second terminal device is able to successfully decode the data packet from the first terminal device. Since the transmission of the first terminal device is completed, the remaining resources in the first resources are not used continuously with a high probability. In this case, the second terminal device may request to use the remaining resources of the first resource, so as to improve the success rate of channel access.
And thirdly, the priority of the data to be sent of the second terminal device is higher than a first preset priority threshold. The first pre-set priority threshold may be a network device configuration or a pre-configured priority, or may be a pre-defined priority. For example, the first preset priority threshold may be a first priority. The priority value of the data to be sent by the second terminal device is higher than the first preset priority threshold, that is, the priority value of the data to be sent by the second terminal device is smaller than the first preset threshold. The first preset threshold may be a network device configured or preconfigured priority value or may be a predefined one of the priority values. For example, the first preset priority threshold may be a first priority value. Illustratively, the first priority value is "2". It is to be understood that if the priority value of the data to be transmitted by the second terminal device is less than 2, which represents a higher priority, the first resource of the first terminal device may be requested to be shared. In a possible scenario, although the priority of the data to be sent by the second terminal device is higher than the priority of the data of the first terminal device, if the data sent by the first terminal device is a tight delay service, after the first terminal device shares the first resource with the second terminal device, the remaining resource in the first resource may not meet the delay requirement of the data sent by the first terminal device. Therefore, the threshold for sharing the first resource is increased by setting the first preset priority threshold, so that the fairness of channel access and channel sharing is ensured to a certain extent. For example, when the priority of the data to be sent by the second terminal device is higher than the first preset priority threshold, the data to be sent by the second terminal device may be considered to be important, and in this case, the second terminal device may share the first resource of the first terminal device.
And fourthly, the number of times of LBT failure of the second terminal equipment is higher than a second preset threshold. LBT failure refers to the result of LBT being that the channel is not idle. Typically, the available resources are determined by LBT before the second terminal device transmits data. If the second terminal device performs LBT for multiple times, the results of the multiple LBT are that the channel is not idle, that is, no idle resource is available, so that the delay requirement and QoS of the data to be transmitted of the second terminal device cannot be met. In this case, the second terminal device may request to share the first resource of the first terminal device, so as to satisfy the delay requirement and QoS requirement of the data to be sent by the second terminal device. It is understood that the LBT performed by the second terminal device is a Type1 LBT.
The second terminal device may send the first request message to the first terminal device when the second terminal device satisfies any one of the first to fourth conditions. For example, the second terminal device may send the first request message to the first terminal device when the second terminal device satisfies condition one, condition two, condition three, or condition four. The second terminal device satisfies a plurality of conditions from the first condition to the fourth condition, and may send the first request information to the first terminal device. For example, the second terminal device satisfies the condition one and the condition three, and may send the first request information to the first terminal device. For example, the second terminal device may transmit the first request information to the first terminal device, if the second terminal device satisfies the condition one, the condition three, and the condition four.
Optionally, before the second terminal device sends the first request information, LBT of type2A, type2B or type2C may be performed. And when the LBT result is that the channel is idle, the second terminal equipment sends the first request information. If the LBT result is that the channel is not idle, the second terminal equipment does not send the first request information. The first request information may directly or indirectly indicate that the second terminal device requests to share the first resource of the first terminal device. Several implementations of the first request message are described below.
In a first implementation form, the first request message may include first information, where the first information occupies 1 bit, and is used to indicate that the second terminal device requests to share the first resource of the first terminal device, or to indicate whether the second terminal device requests to share the first resource of the first terminal device. In this case, the first request message may be carried in the SCI. The value of the 1 bit is "0" and is used to indicate that the second terminal device requests to share the first resource of the first terminal device, and conversely, the value of the 1 bit is "1" and is used to indicate that the second terminal device does not request to share the first resource of the first terminal device. Or, the value of the 1 bit is "1" for indicating that the second terminal device requests to share the first resource of the first terminal device, and conversely, the value of the 1 bit is "0" for indicating that the second terminal device does not request to share the first resource of the first terminal device.
Implementation form three, the first request message may include first time information, which may be used to indicate a time domain length of a portion of the first resources (e.g., referred to as second resources) requested to be shared. The time domain length indicated by the first time information may be regarded as a time domain length that the second terminal device desires to share. In this implementation form, the second terminal device may be indirectly instructed to request to share the first resource of the first terminal device by the first time information. For example, if the time domain length indicated by the first time information is not 0, then it indicates that the second terminal device requests to share a part of the first resource, for example, the second resource, of the first resource of the first terminal device. It can be understood that, if the time domain length indicated by the first time information is not 0, the first terminal device may subsequently send data in the remaining resources of the first resource except the resource shared by the second terminal device, so as to improve the utilization rate of the resource as much as possible.
Optionally, the first time information may occupy N bits, where N is a positive integer. It will be appreciated that the N bits correspond to 2 N And (4) a state. This 2 N 1 of the states is used for indicating the second terminal equipment to request to share the first resource of the first terminal equipment, and the rest 2 N -1 state for indicating the time domain length of the second resource. Optionally, the N bits correspond to 2 N And (4) a state. This 2 N One of the states is used to indicate to the second terminal device that the first resource of the first terminal device is requested to be shared, 2 N Another of the states is for indicating that the second terminal device does not request to share the first resource of the first terminal device, and the rest 2 N -2 states for indicating a time domain length of the second resource.
In a fourth implementation form, the first request information may include first information and first time information, where the first information may be used to indicate that the first resource of the first terminal device is requested to be shared, and the first time information is used to indicate a time domain length of the second resource.
For example, the first request information may further include identification information, where the identification information corresponds to the second terminal device, and the identification information is used for the first terminal device to determine that the second terminal device requests the sharing of the first resource. By means of the identification information, the first terminal device can determine which terminal devices have the requirement and request for sharing the COT.
The embodiment of the present application does not limit how the first request information is sent to the first terminal device. For example, the first request message may be carried in the PSFCH or SCI. Alternatively, the first request message may be carried in the MAC CE and sent to the first terminal device together with the data sent by the second terminal device to the first terminal device. Or, the first request information and the HARQ transmitted by the second terminal device to the first terminal device are transmitted to the first terminal device together. Still alternatively, the first request message is carried in a PC5 RRC message.
The first terminal device may dynamically schedule a time-frequency resource used for the second terminal device to send the first request information. Correspondingly, the second terminal equipment sends the first request information on the time-frequency resource indicated by the first terminal equipment. For example, the first indication information may also be used to indicate time-frequency resources (time-domain resources and frequency-domain resources) used by the second terminal device to transmit the first request information. For another example, the set of candidate resources for the second terminal device to send the first request information may be preconfigured or the network device may be configured or predefined. The first indication information may be used to indicate one candidate resource in the candidate resource set. It should be understood that the candidate resource is a time-frequency resource for the second terminal device to transmit the first request information.
It will be appreciated that the first terminal device requires a switching time to switch from the transmitting state to the receiving state. Fig. 3 is a schematic diagram illustrating a state switching between data transmission and data reception of the first terminal device. During the switching time, the first terminal device cannot transmit or receive data. The switch time may include a transition duration from transmit to receive, a transition duration from receive to transmit. If the switching time is long, it may be caused that after performing LBT by other terminal devices, the switching time is determined to be idle resource, and after LBT is successful, the other terminal devices may consider that the channel is idle, so that the first resource is occupied by the other terminal devices. In order to reduce the probability that the switching time is preempted by other terminal equipment, the duration of the switching time can be shortened. However, if the terminal device needs to access the channel after LBT is successful after performing the transceiving conversion or the transceiving conversion, the channel may be lost. Therefore, in the embodiment of the present application, the time domain resource for the second terminal device to send the first request information is the same as the time domain resource for sending the HARQ, which can reduce the number of times of transceiving conversion of the first terminal device, thereby reducing the risk of failing to access the channel. For example, the second terminal device may transmit the HARQ and the first request information using frequency division multiplexing or code division multiplexing. That is, the time domain resource for transmitting the first request information is the same as the time domain resource for transmitting the HARQ, but the code domain resource for transmitting the first request information is different from the code domain resource for transmitting the HARQ. Or, the time domain resource for transmitting the first request information is the same as the time domain resource for transmitting the HARQ, but the frequency domain resource for transmitting the first request information is different from the frequency domain resource for transmitting the HARQ.
As an example, the code domain resource for transmitting the first request information and the code domain resource for transmitting the HARQ are different. For example, the Cyclic Shift (CS) used for transmitting the first request information is different, the root sequence used for transmitting the first request information and the HARQ is different, or the Orthogonal Cover Code (OCC) used for transmitting the first request information and the HARQ is different.
For example, the first request message occupies 1 bit. Assuming that the value of the 1 bit is '0', the sharing of the first resource is not requested; conversely, the value of the 1 bit is "1", indicating that the first resource is requested to be shared (table 1-1 takes this as an example). Please refer to table 1-1, which is a table of correspondence between the bit meaning of the first request information and the cyclic shift of the sequence used. Table 1-1 indicates, with the first request information, a cyclic shift m of a sequence used by the second terminal device to send the first request information requesting sharing of the first resource cs 6, the first request information indicates not to request to share the first resource, and the second terminal equipment sends the cyclic shift m of the sequence used by the first request information cs 0 is taken as an example.
TABLE 1-1
Figure BDA0003200732570000171
It should be noted that table 1 is only an example, and the embodiment of the present application does not limit the cyclic shift of the first request information and the sequence used by HARQ, and the specific meaning of 1 bit in table 1. For example, a value of 1 bit of "0" may indicate that sharing of the first resource is requested; instead, the 1-bit fetchThe value is "0" indicating that sharing of the first resource is requested. Cyclic shift m of sequence used by second terminal equipment for sending first request information cs May be 0, the first request information indicates that the first resource is not requested to be shared, and the second terminal device transmits a cyclic shift m of a sequence used by the first request information cs May be 0. That is, table 1-1 may also be Table 1-2, table 1-3 or Table 1-4.
Tables 1 to 2
Figure BDA0003200732570000181
Tables 1 to 3
Figure BDA0003200732570000182
Tables 1 to 4
Figure BDA0003200732570000183
For example, HARQ may also occupy 1 bit, and assuming that the value of the 1 bit is "0", it indicates that HARQ includes NACK; conversely, the value of the 1 bit is "1", which indicates that HARQ includes ACK. Please refer to table 2, which is a table of correspondence between the first request information and the bit meaning of HARQ and the cyclic shift of the used sequence.
TABLE 2
Figure BDA0003200732570000184
It should be noted that table 2 is only an example, and the cyclic shift of the first request information and the sequence used by HARQ is not limited in the embodiment of the present application. For example, NACK is denoted by 1 and ACK is denoted by 0, or sharing is not requested by 1 and sharing is requested by 0. "{0,0}", "{0,1}", "{1,0}" and cyclic shifts of 4 sequences correspond one to one, but the specific mapping manner is not limited.
As another example, the frequency domain resource transmitting the first request information and the frequency domain resource transmitting the HARQ are not the same. For example, the second terminal device transmits the first request information using a first Resource Block (RB), and transmits the HARQ using a second RB, where the first RB and the second RB are different. For another example, the second terminal device transmits the first request information using a first set of resource blocks, and transmits the HARQ using a second set of resource blocks, where the first set of resource blocks and the second set of resource blocks are different. The first terminal device distinguishes the HARQ from the first request information of the second terminal device according to different frequency domain resources.
The resource for transmitting HARQ may be a transmission resource periodically configured in the resource pool, or may be a transmission resource configured at a specific position in the COT with the start position of the COT as a reference point. I.e. resources for transmission of HARQ are periodically configured in the COT. For example, using the start position of the COT as a reference point, the kth slot in the COT is a resource for transmitting HARQ. Where K may be 1 or more values, referred to herein as a Pattern (Pattern). When there is more than one Pattern, the first terminal device may indicate a Pattern (Pattern) of the first resources, which may indicate the location of the HARQ resources in the first resources. The second terminal device may determine the resources to transmit HARQ according to the pattern.
The first terminal device may indicate, via a bitmap (bitmap), which Physical Resource Blocks (PRBs) on a symbol used for transmitting the PSFCH are available for transmitting HARQ and which PRBs are not used for transmitting HARQ. For example, a bit corresponding to a certain PRB takes a value of "1" to indicate that the PRB is used for transmitting HARQ, and correspondingly, a bit corresponding to a certain PRB takes a value of "0" to indicate that the PRB is not used for transmitting HARQ. Or, the bit corresponding to a certain PRB takes a value of "0" to indicate that the PRB is used to send the HARQ, and correspondingly, the bit corresponding to a certain PRB takes a value of "1" to indicate that the PRB is not used to send the HARQ. For convenience of description, the value of a bit corresponding to a certain PRB is "1" in the following, and the PRB is indicated to be used for transmitting HARQ as an example.
Specifically, the second terminal device determines the resource available for transmitting the PSFCH (HARQ) according to the time-frequency resource location of the PSSCH. Corresponding to the time-frequency resource of one PSSCH, there may be multiple candidate resources determined by the second terminal device, i.e., there may be multiple candidate resources for transmitting PSFCH (HARQ). The second terminal device may transmit HARQ using one of the plurality of candidate resources, and remaining candidate resources of the plurality of candidate resources except for the resource transmitting HARQ may be used to transmit the first request information.
In one possible implementation, the set of candidate resources for transmitting HARQ may be configured or preconfigured. The second terminal device may select one candidate resource from the candidate resource set for transmitting HARQ to transmit HARQ, and transmit the first request information in remaining resources other than the transmission HARQ resource. Likewise, the set of candidate resources for sending the first request information may be configured or preconfigured. The second terminal device may select one candidate resource from the set of candidate resources for transmitting the first request information to transmit the first request information.
Please refer to fig. 4, which is a schematic diagram illustrating the configuration of resources for HARQ transmission. Fig. 4 exemplifies that the time domain resource in the resource pool includes 6 slots, the frequency domain includes 8 PRBs, and the period of the configured PSFCH is 2. In fig. 4, the PRB indicated by "1" on the symbols (i.e., the 2 nd and 3 rd from last symbols) used for transmitting the PSFCH in the 2 nd, 4 th and 6 th slots is used for transmitting the HARQ, and the PRB indicated by "0" is not used for transmitting the HARQ. It is understood that the last of the 2 nd slot, the 4 th slot and the 6 th slot in fig. 4 is a gap (gap). In fig. 4, the duplication of the symbols used for transmitting the PSFCH refers to the repetition of the symbols used for transmitting the PSFCH. It is to be understood that the 3 rd last symbol of each of the 2 nd, 4 th and 6 th slots is a copy of the 2 nd last symbol.
In another possible implementation, the candidate resource set for transmitting HARQ may be based on time-frequency resources of the psch. For example, can be selected from
Figure BDA0003200732570000191
Is selected out
Figure BDA0003200732570000192
Between PSSCH slots associated with PRB and PSFCH slotsTime slot i and subchannel j. Wherein the content of the first and second substances,
Figure BDA0003200732570000193
Figure BDA0003200732570000194
0≤j<N subch . The allocated resources are sorted from the ascending order of i and then from the ascending order of j. Terminal equipment expectation
Figure BDA0003200732570000195
Is that
Figure BDA0003200732570000196
A multiple of (c).
Further, one candidate resource for transmission HARQ may be determined from the candidate resource set for transmission HARQ according to formula (1) as follows.
Figure BDA0003200732570000197
In the formula (1), P ID Is the physical layer source ID indicated in the second level SCI, which schedules the psch. M is a group of ID Is identification information of a terminal device receiving the PSSCH, which is indicated by a higher layer. When the broadcast type (cast type) in the second-level SCI is indicated as "01", it means that the HARQ feedback mode is multicast option 2, i.e., the receiving terminal device feeds back NACK only when it has not successfully decoded. In other cases, M ID Is 0.
Figure BDA00032007325700001911
And a candidate resource set which comprises a frequency domain dimension and a code domain dimension and corresponds to the PSSCH.
Figure BDA0003200732570000198
Wherein, the first and the second end of the pipe are connected with each other,
Figure BDA0003200732570000199
is 1 or
Figure BDA00032007325700001910
The number of subchannels used for pscch transmission.
Figure BDA0003200732570000201
Is the number of CS pairs.
Figure BDA0003200732570000202
A set of PSFCH candidate resources associated with the PSSCH resource.
Figure BDA0003200732570000203
Figure BDA0003200732570000204
Is a set of PRBs, N, used for transmitting HARQ subch The number of subchannels in the resource pool, where the resource pool is a time-frequency resource set that can be used for transmitting sidestream data.
Figure BDA0003200732570000205
The period of feedback for the PSFCH in the resource pool.
For example, please refer to fig. 5, which is a schematic diagram illustrating a candidate resource for transmission HARQ determined from a candidate resource set for transmission HARQ. Fig. 5 illustrates that the resource includes 3 sub-channels in the frequency domain, and the number j of the 3 sub-channels is 0,1,2 from bottom to top. Each subchannel includes 10 PRBs. The resource illustrated in fig. 5 includes 4 time slots in the time domain, and the number i of the 4 time slots is 0,1,2,3 from left to right. The minimum feedback timing from PSFCH to HARQ is 2, i.e. the data scheduling of slot 0 and slot 1 needs to be fed back on slot 3. Slot 0 is used for transmitting PSCCH or pscsch. Slot 0 and slot 1 need to be fed back in the time slot (e.g., slot 3) where a PSFCH is located, the last column in fig. 5 is the set of PRBs available for HARQ transmission in the PRBs in the resource pool, and the numbering sequence of the PRBs is from top to top in fig. 5, starting from 0. In FIG. 5, N subch Is the number of 3, and the number of the carbon atoms is 3,
Figure BDA0003200732570000206
is according to 2
Figure BDA0003200732570000207
It can be known that
Figure BDA0003200732570000208
Is 3.
Figure BDA0003200732570000209
Within the dashed box of 18 (illustrated in dashed lines in fig. 5) is a PRB indicated by bitmap 1, i.e. a PRB used for transmission of HARQ.
From
Figure BDA00032007325700002010
In select out
Figure BDA00032007325700002011
With respect to slot 0, subchannel 0, for example, assuming PSSCH transmission on slot 0, subchannel 0, the range of the corresponding PRB for HARQ transmission in slot 3 is [0,2 ] as calculated above](i.e., PRB0, PRB1 and PRB 2) (PRB indicated by the shaded portion in fig. 5). The determination method of the HARQ candidate resources corresponding to other subchannels and time slots is the same as above.
Optionally, frequency domain resources and code domain resources on symbols used for transmitting the PSFCH that are not used for transmitting the HARQ may be used for transmitting the first request information.
Similarly, the remaining resources excluding the resources actually used for transmission of HARQ in the candidate resource set for transmission of HARQ on the symbol used for transmission of PSFCH may be used for transmission of the first request information. That is, the candidate resource set for transmitting the first request message may also be determined according to the time-frequency resource of the psch. For example, the candidate resource set for transmitting the first request information may be determined according to the following formula (2).
Figure BDA00032007325700002012
In the formula (2), P ID Is the physical layer source ID indicated in the second level SCI, which schedules the PSSCH.
Figure BDA00032007325700002013
And a candidate resource set which comprises a frequency domain dimension and a code domain dimension and corresponds to the PSSCH.
Figure BDA00032007325700002014
Figure BDA00032007325700002015
Wherein the content of the first and second substances,
Figure BDA00032007325700002016
is 1 or
Figure BDA00032007325700002017
The number of subchannels used for psch transmission.
Figure BDA00032007325700002018
Is the number of CS pairs.
Figure BDA00032007325700002019
A set of PSFCH candidate resources associated with the PSSCH resource.
Figure BDA00032007325700002020
Figure BDA00032007325700002021
Is a PRB set used for sending the first resource request information (i.e. a subset of a PRB set whose bitmap indicates 0 in a symbol used for transmitting the PSFCH, or a subset of a PRB set whose bitmap indicates 0 in a COT internal frequency domain resource PRB corresponding to a symbol used for transmitting the PSFCH). N is a radical of hydrogen subch Is the number of sub-channels in the resource pool. The resource pool is a time-frequency resource set which can be used for sending side row data.
Figure BDA00032007325700002022
The period for sending the first request message in the resource pool. The period of the first request information transmission may be a period of HARQ transmission. Optionally, N subch The number of frequency domain resources and frequency domain resources corresponding to the COTThe source may be a PRB or may be a subchannel. Wherein a subchannel is M PRBs, M being configured by the network device or being pre-configured or pre-defined. In the alternative,
Figure BDA00032007325700002023
the number of slots for transmitting the PSSCH corresponding to the HARQ resource location is N _ PSFCH.
It may be appreciated that the set of candidate resources for transmitting the first request information and the set of candidate resources for transmitting the HARQ may be the same. In this case, the resource for transmitting the first request information and the resource for transmitting the HARQ may be distinguished using frequency domain or code domain resources. For example, the resource for transmitting the first request information and the resource for transmitting the HARQ may be determined by the following formula (3).
Figure BDA00032007325700002024
In the formula (3), P ID Is the physical layer source ID indicated in the second level SCI, which schedules the psch. M is a group of ID Is identification information of a terminal device receiving the PSSCH, which is indicated by a higher layer. When the broadcast type (cast type) in the second-level SCI is indicated as "01", it means that the HARQ feedback mode is multicast option 2, i.e., the receiving terminal device feeds back NACK only when there is no successful decoding. In other cases, M ID Is 0.Δ may be 1 or a predefined or network device configured or network device preconfigured value.
Figure BDA0003200732570000211
And the PSSCH is corresponding to a candidate resource set comprising a frequency domain dimension and a code domain dimension.
Figure BDA0003200732570000212
Wherein, the first and the second end of the pipe are connected with each other,
Figure BDA0003200732570000213
is 1 or
Figure BDA0003200732570000214
The number of sub-channels used for PSSCH transmission.
Figure BDA0003200732570000215
Is the number of CS pairs.
Figure BDA0003200732570000216
A set of PSFCH candidate resources associated with the PSSCH resource.
Figure BDA0003200732570000217
Figure BDA0003200732570000218
Is a PRB set, N, for transmitting HARQ subch The number of sub-channels in the resource pool, which is a time-frequency resource set that can be used for sending side row data.
Figure BDA0003200732570000219
The period of feedback for the PSFCH in the resource pool.
The second terminal device determines a resource for sending the first request information, and sends the first request information to the first terminal device to request to share the first resource of the first terminal device.
S203, the first terminal equipment receives the first request information and stops using the first resource.
The first terminal device receives the first request message and determines whether the second terminal device requests to share the first resource of the first terminal device. If the second terminal device requests to share the first resource of the first terminal device. The first terminal device may share all remaining resources of the first resource to the second terminal device for use. That is, the first terminal device does not use all of the remaining resources in the first resource any more, that is, does not use all of the remaining resources in the first resource to transmit data.
For example, when the first terminal device receives the first request message, it may be default that the second terminal device requests to share the first resource of the first terminal device.
For example, the first terminal device may determine whether the second terminal device requests to share the first resource of the first terminal device according to the content included in the first request information. For example, the first request information includes only the first information, and the first terminal device may determine whether the second terminal device requests to share the first resource of the first terminal device according to the first information. For another example, the first request information includes first time information, and the first terminal device determines, according to the first time information, that the second terminal device requests to share a second resource in the first resources. It is to be understood that if the time domain length of the second resource indicated by the first time information is smaller than the time domain length of the remaining resources of the first resource except the resources already used by the first terminal device. I.e. the first resource is shared to the second terminal device, in addition to the second resource, there are also remaining resources. The first terminal equipment can subsequently use the residual resource to send data so as to improve the utilization rate of the resource as much as possible and can share the first resource more flexibly.
Referring to fig. 6A, a schematic diagram of a first terminal device and a second terminal device sharing a first resource is shown. Fig. 6A takes the example that the first terminal device receives the first request message and does not continue to use the first resource to transmit data. And the first terminal equipment does not use the rest resource in the first resource to send data subsequently. In fig. 6A, a first terminal device transmits data on a first resource. And when the first terminal equipment receives the first request information, the remaining resources in the first resources are shared to the second terminal equipment by default. The second terminal device may transmit data on the second resource, e.g. the second terminal device transmits data to the first terminal device on the second resource. The first terminal device may stop transmitting data in remaining resources of the first resources other than the resources used by the first terminal device and receive data from the second terminal device on the second resources.
Referring to fig. 6B, another schematic diagram of the first terminal device and the second terminal device sharing the first resource is shown. In fig. 6B, the first terminal device transmits data on the first resource, as in fig. 6A. And when the first terminal equipment receives the first request information, the remaining resources in the first resources are shared to the second terminal equipment by default. The second terminal device may send data on the second resource, e.g. the second terminal device sends data to the first terminal device on the second resource. The difference from fig. 6A is that, in fig. 6B, the second terminal device carries the time domain length of the second resource requested by the first terminal device when sending the first request information. The first terminal device may determine that the first resource has the remaining resources in addition to the second resource according to the time domain length of the second resource. After receiving the data on the second resource, the first terminal device subsequently transmits the data on the remaining resource.
After the second terminal device sends the first request message, the second terminal device may send data to the first terminal device using the remaining resources in the first resources. Further, to improve the data transmission reliability of the second terminal device, the second terminal device may perform LBT of type2A, type2B or type2C type before using the remaining resources in the first resources. And when the LBT result is that the channel is idle, the second terminal equipment uses the residual resource in the first resource to send data.
In the flow shown in fig. 2, the second terminal device requests to share the first resource, and the first terminal device allows the second terminal device to share the first resource by default. Namely, the first terminal equipment receives the first request information from the second terminal equipment and stops using the residual resource of the first resource. For the first terminal device there may also be data to be transmitted urgently. If the first resource is shared to the second terminal device by default, the normal service of the first terminal device will be affected. In addition, if all of the plurality of terminal devices request the first terminal device to share the first resource, and all of the first terminal devices allow the plurality of terminal devices to share the first resource, there may be a resource conflict caused by the plurality of terminal devices seizing the first resource of the first terminal device at the same time. Therefore, the embodiment of the present application provides a second resource sharing method. In a second resource sharing method, a first terminal device may determine whether to allow other terminal devices to share a first resource, so as to reduce resource conflicts and reduce the impact on the transmission service of the first terminal device.
It should be noted that the execution order of S201 and S202 is not limited in the embodiment of the present application. That is, S201 may be performed before S202, or may be performed after S202.
Please refer to fig. 7, which is a flowchart illustrating a second resource sharing method according to an embodiment of the present application. The flow shown in fig. 7 takes at least one terminal device sharing the resource of the first terminal device as an example.
S701, the first terminal device sends first indication information to at least one terminal device, and correspondingly, the at least one terminal device receives the first indication information respectively.
The first indication information may be used to indicate the first resource of the first terminal device, that is, the COT initialized by the first terminal device. The specific implementation of the first indication information may refer to the related content of the foregoing S201, and is not described herein again.
The first terminal device may send the first indication information to one or more terminal devices. For example, the first terminal device may transmit the first indication information to the second terminal device. For another example, the first terminal device may transmit the first indication information to the second terminal device and the third terminal device. The terminal device receiving the first indication information may acquire the first resource of the first terminal device. It is to be understood that the first end device may send the first indication information to the at least one end device in a unicast or multicast manner. The third terminal device is not necessarily present in fig. 7 and is therefore illustrated in fig. 7 by a dashed line.
If the first terminal device sends the first indication information to the second terminal device, the second terminal device may request the first terminal device to share the first resource. If the first terminal device sends the first indication information to the second terminal device and the third terminal device, the second terminal device and the third terminal device can respectively request the first terminal device to share the first resource correspondingly. It should be noted that the second terminal device or the third terminal device may not know the first resource of the first terminal device in advance, and may request the first terminal device to share the resource of the first terminal device. That is, S701 is not a step that is necessarily performed, and is therefore illustrated by a broken line in fig. 7.
S702, the second terminal device sends the first request information to the first terminal device, and the first terminal device receives the first request information accordingly.
The first request information may be for requesting sharing of a first resource of the first terminal device. The second terminal device may send a first request message to the first terminal device when it has a need to request sharing of the first resource of the first terminal device. The specific implementation of the first request message may refer to the related content of the foregoing S202, which is not described herein again.
S703, the first terminal device sends the second indication information to the second terminal device, and the second terminal device receives the second indication information accordingly.
The first terminal device receives the first request information, determines whether to share the first resource to the second terminal device, that is, whether to allow the second terminal device to use the first resource, and transmits response information, such as second indication information, for the first request information to the second terminal device. For example, the first terminal device may determine whether the second terminal device satisfies one or more of the conditions one through four of the contents of fig. 2 described above. The first terminal device may determine to share the first resource to the second terminal device if the second terminal device satisfies one or more of conditions one through four.
The second indication information may be carried in the SCI. The first terminal device sends the first indication information to the second terminal device, which may also be considered as that the first terminal device sends an SCI to the second terminal device, where the SCI includes the second indication information. For example, the second indication information may be carried in the first-level SCI of the SCIs, may also be carried in the second-level SCI of the SCIs, or may be carried in the first-level SCI and the second-level SCI, which is not limited in this embodiment. Alternatively, the second indication information may be in SCI format. Alternatively, the second indication information may be carried in a physical sidelink shared channel (psch) in a manner of a second-level SCI or MAC CE. The first terminal device transmits the second indication information to the second terminal device, which may also be considered as transmitting a PSSCH to the second terminal device, where the PSSCH includes the second indication information. Alternatively, the first terminal device may indicate the response message with 1 bit in the SCI. Alternatively, the first terminal device may indicate the second indication information with 1 bit in the SCI.
The second indication information may indicate that the second terminal device is not allowed to use the first resource if the first terminal device does not allow the second terminal device to use the first resource. If the first terminal device allows the second terminal device to use the first resource, the first terminal device may determine which of the first resources the second terminal device is allowed to use in order to meet the requirements of the second terminal device as much as possible. The implementation form of the second indication information is different according to the content to be indicated by the second indication information. Several implementations of the second indication information are described below.
For example, the second indication information may include second information that may be used to indicate whether the second terminal device is capable of using the first resource. If the second information indicates that the second terminal device is capable of using the first resource, the second terminal device may default to using the remaining resources of the first resource. And after receiving the first request message, the first terminal equipment stops using the residual resource of the first resource. The second terminal device transmits data using the remaining resources in the first resources.
For example, the second indication information may include second information and second time information. The second information may be used to indicate whether the second terminal device is able to use the first resource. The second time information may be used to indicate a time domain length of a part of the first resources (e.g., referred to as third resources) that are allowed to be shared. The second terminal device may transmit data on the third resource. Optionally, the second terminal device sends data to the first terminal device on the third resource. The second terminal device may use the resource corresponding to the time domain length indicated by the second time information to transmit data, and accordingly, the first terminal device does not use the resource corresponding to the time domain length indicated by the second time information to transmit data any more. If the first resource has available remaining resources in addition to the third resource, the subsequent first terminal device may send data on the remaining resources, thereby improving the utilization flexibility of resources and improving the flexibility of sharing resources by the plurality of terminal devices. In possible implementations, a set or list of multiple time domain lengths may be predefined or configured by the network device. The second time information may comprise a value in the set indicating a time domain length. Alternatively, the second time information may comprise a row index in the list for indicating a time domain length.
Optionally, the second indication information may include second time information. In this case, the second time information may occupy M bits, where M is a positive integer. It can be understood that M bits correspond to 2 M And (4) a state. These 2 M 1 of the states may be used to indicate that the second terminal device may share the first resource, i.e. may use the remaining resources of the first resource. In this case, the second terminal device may use all of the remaining resources in the first resources. And after receiving the first request message, the first terminal equipment stops using the residual resource in the first resource. Alternatively, 2 may be used M Another one of the states indicates that the second terminal device may not use the remaining resources of the first resources.
In addition, even though the first terminal device allows the second terminal device to share the first resource, the time domain length of the resource (i.e., the third resource) that the first terminal device allows the second terminal device to share may be the same as or different from the time domain length of the second resource. That is, the time domain length of the third resource indicated by the second time information may be the same as or different from the time domain length of the second resource indicated by the first time information.
For example, the second indication information may include second information, second time information, and offset information. The offset information may be used to indicate a time domain starting position of the third resource. For example, the offset information includes a first offset value that can be used to indicate an offset between a time domain starting position of the third resource and a time domain starting position at which the second indication information is received. Alternatively, the first offset value may be used to indicate an offset between a time domain start position of the third resource and a time domain end position at which the second indication information is received. The second terminal device may determine the position of the third resource (i.e., the time domain starting position of the third resource and the time domain ending position of the third resource) according to the first offset value and the second time information, and then transmit data on the third resource. In possible implementations, a set or list of multiple offset values may be predefined or configured by the network device. The first offset may comprise a value in the set. Alternatively, the first offset may comprise a row index in the list. Or the first offset value is a fixed value. The fixed value may be network device configuration, pre-configured or pre-defined. Alternatively, the first offset value may be 0. It should be noted that, in this document, the time unit of the offset may be a slot, a subframe, a symbol, an absolute time, and the like. For example, herein, the offset value may be in units of slots.
Referring to fig. 8A, a schematic diagram of the first terminal device and the second terminal device sharing the first resource is shown. Fig. 8A illustrates that when the first terminal device receives the first request message, it may be determined whether the second terminal device is allowed to share the first resource according to the first priority information or the first time information in the first request message. The first terminal device may determine to allow the second terminal device to share the first resource if the priority indicated by the first priority information is higher than the priority of the data transmitted by the first terminal device. Further, the first terminal device may determine, according to the first time information, to allow the second terminal device to share a third resource in the first resource. The second terminal device may transmit data on the third resource. The first terminal device can receive data on the third resource without using the third resource to transmit data. Fig. 8A takes as an example that the first terminal device receives data from the second terminal device at the third resource. It is to be understood that the interval between the third resource and the time domain end position where the first terminal device sends the second indication information, that is, the first offset value may be 0 or may not be 0.
It will be appreciated that there may be a plurality of terminal devices requesting to share the first resource of the first terminal device. The first terminal device may share the remaining resources of the first resource to the plurality of terminal devices. In order to distinguish the locations where the resources shared to the respective terminal devices are located, the second indication information may further include identification information. For example, the first terminal device shares the third resource to the second terminal device, and the identification information may include an identification corresponding to the second terminal device, for example, the first identification. That is, the first identifier may be used to indicate the second terminal device, and it may also be understood that the first identifier may be used to indicate that the second terminal device is capable of using the first resource of the first terminal device. It can be understood that, if the second terminal device is a peer device of the first terminal device, the first resource is shared only with the second terminal device. The second indication information may not include the identification information, i.e. not include the first identification. The second terminal device receives the second indication information, and may default that the third resource is shared with the second terminal device.
S704, the third terminal device sends the second request information to the first terminal device, and the first terminal device receives the second request information accordingly.
The third terminal device may send the second request information to the first terminal device when it has a need to request sharing of the first resource of the first terminal device. The second request information may include one or more of third information, third time information, and second priority information, similar to the first request information. Wherein the third information is used for indicating that the third terminal equipment requests to use the first resource. The third time information is used to indicate a time domain length of requesting to share a part of the first resources (e.g., referred to as a fourth resource). The second priority information is used for indicating the priority of data to be sent by the third terminal device.
The second request message may also be carried in the PSFCH or SCI. Or, the second request message may be carried in the second-level SCI or MAC CE, and sent to the first terminal device together with the data sent by the third terminal device to the first terminal device. Or, the second request information and the HARQ transmitted by the third terminal device to the first terminal device are transmitted to the first terminal device together. If no special description exists, the third terminal device sends the second request information, and the second terminal device sends the first request information. The specific implementation and the sending manner of the second request message may refer to the related content of the foregoing S202, and are not described herein again.
It should be noted that, S702 and S704 are executed by the second terminal device and the third terminal device, respectively, and therefore the execution order is not limited. In addition, S704 may be executed before S703, or may be executed after S703.
S705, the first terminal device sends second indication information to the third terminal device, and correspondingly, the third terminal device receives the second indication information.
Similar to the second terminal device, the first terminal device may also send indication information to the third terminal device, indicating whether the first terminal device allows the third terminal device to share the first resource. For example, the first terminal device may also send the second indication information to the third terminal device. The second information in the second indication information is also used for indicating whether the third terminal equipment can use the first resource. The third terminal equipment receives the second indication information, and can determine whether the first resource can be used according to the second information in the second indication information.
In a possible scenario, if the first terminal device allows the second terminal device and the third terminal device to share the first resource, however, the first terminal device does not indicate which of the first resources the second terminal device and the third terminal device may use. In this scenario, after the second terminal device and the third terminal device receive the second indication information, the second terminal device and the third terminal device may compete to use the first resource, which may cause resource conflict. Therefore, if the first terminal device allows the third terminal device to share the first resource, the first terminal device further needs to indicate which of the first resources the third terminal device is allowed to share, so as to reduce resource conflicts.
For example, the second indication information may further include fourth time information. The fourth time information may be used to indicate a time domain length of a part of the first resource (for example, referred to as a fifth resource) that the third terminal device is allowed to share. The third terminal device may transmit data on the fifth resource. Optionally, the third terminal device sends data to the first terminal device on the fifth resource. The time domain length of the fifth resource may be the same as or different from the time domain length of the fourth resource, which is not limited in this embodiment of the present application.
The offset information in the second indication information may further include a second offset value, which may be used to indicate an offset between the time domain starting position of the fifth resource and the time domain starting position at which the second indication information is received. Or the second offset value may be used to indicate that the time domain starting position of the fifth resource and the time domain ending position of the third resource are offset, and the third terminal device may determine the time domain starting position of the fifth resource according to the second offset value and the second time information, and then send data on the fifth resource. If the second offset value is 0, the third terminal device may determine the starting time domain position of the fifth resource according to the second time information. It can be understood that, if there are remaining resources in the first resource besides the third resource and the fifth resource, the first terminal device may subsequently transmit data in the remaining resources, so as to improve the utilization rate of the resources, and enable the plurality of terminal devices to more efficiently and flexibly share the resources.
Referring to fig. 8B, a schematic diagram of the first terminal device, the second terminal device and the third terminal device sharing the first resource is shown. Similarly as in fig. 8A, the first terminal device receives the second request information from the third terminal device, and may determine whether to allow the third terminal device to share the first resource according to the second priority information or the third time information in the second request information. The first terminal device may determine to allow the third terminal device to share the first resource if the priority indicated by the second priority information is higher than the priority of the data transmitted by the first terminal device. Further, the first terminal device may determine, according to the third time information, to allow the second terminal device to share a fifth resource of the first resources. The second terminal device may transmit data at the fifth resource. The first terminal device can receive data on the fifth resource without using the fifth resource to transmit data. Fig. 8B exemplifies that the first terminal device receives data from the third terminal device at the fifth resource. It is to be understood that the interval between the time domain start position of the fifth resource and the time domain end position of the third resource, i.e. the second offset value, may be 0 or may not be 0.
The identification information in the second indication information may further include a second identification, where the second identification is used to indicate the third terminal device. It may also be understood that the second identifier is used to indicate that the third terminal device is able to use the first resource of the first terminal device. The identification information of the terminal device includes, but is not limited to, the following.
First, the identification information may be an identification of the terminal device. Fig. 9A is a schematic structural diagram of the second indication information. Fig. 9A illustrates that x terminal devices share the first resource, and offset values corresponding to the x terminal devices are 0, respectively.
Second, the identification information may be a member identification of a group in which the terminal device is located. Fig. 9B is a schematic structural diagram of the second indication information. The difference from fig. 9A is that, in fig. 9B, the identification information of the terminal device is the member identification of the group in which the terminal device is located. In this case, the second indication information may be transmitted in a multicast manner.
Third, the identification information may include a source identification and a destination identification. The source identifier and the destination identifier correspond to a pair of terminal devices. For example, the source identifier corresponds to a first terminal device, and the destination identifier corresponds to a terminal device that is allowed to use the first resource. Fig. 9C is a schematic structural diagram of the second indication information. The difference from fig. 9A and 9B is that in fig. 9C, the identification information of the terminal device is a source identification and a destination identification.
It should be noted that fig. 7 exemplifies that the second terminal device and the third terminal device request to share the first resource of the first terminal device. The number of the terminal devices requesting to share the first resource of the first terminal device is not limited in the embodiments of the present application. It is to be understood that the terminal device requesting to share the first resource of the first terminal device has at least 3 terminal devices, then any of the at least 3 terminal devices may perform steps similar to the second terminal device or the third terminal device. Correspondingly, the second information in the second indication information sent by the first terminal device may indicate whether each of the at least 3 terminal devices may share the first resource. The second indication information may include time information corresponding to at least 3 terminal devices, which may be collectively referred to as shared time information. That is, the second indication information includes shared time information including the second time information and the fourth time information, and may further include more time information. By analogy, the offset information in the second indication information may comprise more offset values, the identification information in the second indication information also comprising more identification information. And will not be described in detail herein.
And each terminal device receives the second indication information and determines whether the first resource can be shared according to the second information. If the first resource can be shared, determining a time domain starting position of the resource which can be shared and a time domain length of the resource which can be shared according to the sharing time information and/or the identification information. For example, each terminal device determines the time domain start position of the resource that can be shared and the time domain length of the resource that can be shared according to the sequence from Least Significant Bit (LSB) to Most Significant Bit (MSB) of the received shared time information, the offset information, and the identification information. For example, the source ID and destination ID corresponding to the second terminal device are 1 st from LSB to MSB, and the resource occupied by the second terminal device is the time domain length indicated by the first time information offset from the position where the second indication information is received. That is, the time domain start position of the resource occupied by the second terminal device is the offset + (N-1) × duration from the end time domain position of receiving the second indication information. N is the number of identification information from LSB to MSB, and N is an integer greater than or equal to 1. duration is the time domain length indicated by the time information corresponding to N.
For example, please refer to fig. 10, which is a schematic structural diagram of the second indication information. In fig. 10, the offset information in the second indication information includes offset values corresponding to the x terminal devices, the identification information includes respective identifications of the x terminal devices, and the shared time information includes time information corresponding to the x terminal devices. Take x =2, that is, terminal device 2 is the second terminal device as an example. The terminal device 2 receives the second indication information, may determine the starting position of the third resource according to the first offset value, and then determine the time domain starting position of the third resource according to the first offset value and the time domain starting position at which the second indication information is received. And determining the time domain ending position of the third resource according to the time domain starting position of the third resource and the time domain length indicated by the second time information in the shared time information. It should be understood that the third terminal device may determine the position of the fifth resource according to the second offset value and the time domain length indicated by the second time information. By analogy, the terminal device x may determine the location of the sharable resource according to the xth offset value and the time domain length indicated by the time information x-1. The terminal device, the offset value, the identification information, and the time information are in a one-to-one correspondence, which is not described herein again. It should be noted that the offset values, the identifiers of the terminal devices, and the arrangement positions of the time information in fig. 9A, 9B, 9C, and 10 are merely illustrative, and this is not limited in this embodiment of the present application.
After receiving the second indication information, each terminal device may not perform LBT when sharing resources in the first resources according to the second indication information. In consideration of the transceiving conversion time between the first terminal device transmission and the other terminal device transmission, the resource shared to the other terminal device may be occupied by another terminal device considering that the channel is idle. In this case, the remaining resources of the first resource are no longer reliable for other terminal devices sharing the first resource. Therefore, the receiving and transmitting conversion time or the transmitting and receiving conversion time can be reduced as much as possible, and the COT initialized by the first terminal equipment is ensured not to be interrupted. Alternatively, the other terminal device may determine whether to use the sharable resource according to the result of LBT. If the result of LBT is that the channel is free, other terminal devices may use sharable resources. If the LBT result is that the channel is not idle, other terminal equipment does not access the channel. It is understood that here the LBT may be type2ALBT, type2B LBT or type2C LBT.
Note that if S704 is not executed in fig. 7, S705 is not executed either, and thus it is illustrated by a dotted line in fig. 7. The first terminal device may transmit the second indication information in a multicast manner if the second terminal device and the third terminal device belong to the same group.
In this embodiment, the first terminal device may determine whether to allow other terminal devices to share the resource of the first terminal device based on the request information of one or more terminal devices, and determine which resources of the first resources are shared to the terminal device. This may reduce resource conflicts caused by a plurality of terminal devices competing to share the first resource. In addition, the first terminal device determines the resources sharable by other terminal devices according to the priority information in the request information of other terminal devices and the expected shared time domain length or resources, so that the delay requirements and the QoS requirements of other terminal devices can be met.
As described above in the flow of fig. 2 and fig. 7, the other terminal device requests to share the first resource of the first terminal device, and the first terminal device informs whether the other terminal device is allowed to share the first resource in response to the request of the other terminal device. And if the first terminal equipment allows the plurality of terminal equipment to share the first resource, the process of sharing the first resource by each terminal equipment is also informed. It is described below that the first terminal device may actively share the first resource with other devices.
Please refer to fig. 11, which is a flowchart illustrating a third resource sharing method according to an embodiment of the present application. The process shown in fig. 11 takes the first terminal device actively sharing the first resource of the first terminal device with other terminal devices as an example.
S1101, the first terminal device sends third indication information to the second terminal device, and correspondingly, the second terminal device receives the third indication information.
The first terminal device may actively share the COT initialized by the first terminal device to one terminal device, for example, a second terminal device. The second terminal device may transmit data on a part of the first resources allowed to be used by the first terminal device when the data needs to be transmitted. The first terminal device may also actively share the COT initialized by the first terminal device to a plurality of terminal devices. For example, the first terminal device may actively share the COT initialized by the first terminal device to the second terminal device and the third terminal device. Thus, when the second terminal device needs to transmit data, the second terminal device can transmit data on part of the first resources allowed to be used by the second terminal device by the first terminal device. And when the third terminal equipment needs to send the data, the third terminal equipment sends the data on part of the first resources which are allowed to be used by the third terminal equipment by the first terminal equipment.
Take the example that the first terminal device actively shares the COT initialized by the first terminal device to the second terminal device. The first terminal device may send third indication information to the second terminal device, where the third indication information may be used to indicate whether the first terminal device allows the second terminal device to use the first resource (i.e., the initialized COT of the first terminal device). There are various transmission modes of the third indication information, and the embodiment of the present application does not limit how the third indication information is transmitted.
Illustratively, the third indication information may be carried in the SCI. The first terminal device sends the third indication information to the second terminal device, which may also be considered as sending, by the first terminal device, an SCI to the second terminal device, where the SCI includes the third indication information. Optionally, a field in the SCI may be used to indicate the third indication information. The SCI may be a first-level SCI or a second-level SCI.
For example, the third indication information may be carried in the PSFCH. The first terminal device sends the third indication information to the second terminal device, which may also be considered as that the first terminal device sends a PSFCH to the second terminal device, where the PSFCH includes the third indication information. Alternatively, the third indication information may be carried in a MAC CE or PC5 RRC message. The first terminal device sends the third indication information to the second terminal device, which may also be considered as that the first terminal device sends a MAC CE to the second terminal device, where the MAC CE includes the third indication information. The third indication information may indicate whether the one or more terminal devices are allowed to use the first resource using 1 bit. For example, a different SCI format may be used to indicate whether the first resource is shared. Alternatively, the CRC scrambling code of a different SCI may be used to indicate whether the first resource is shared. Alternatively, the RNTI scrambling code of a different SCI may be used to indicate whether the first resource is shared. It can be understood that the first terminal device actively shares the first resource to the plurality of terminal devices, and the first terminal device may send the third indication information in a multicast manner.
The third indication information further comprises identification information to indicate the terminal device sharing the first resource, if the third indication information indicates that the first resource can be shared. It is to be understood that the identification information corresponds to the terminal device sharing the first resource. It may also be understood that the identification information indicates that terminal devices sharing the first resource are able to use the first resource. For example, the terminal device sharing the first resource is the second terminal device, and the identification information corresponds to the second terminal device. For another example, the terminal devices sharing the first resource are the second terminal device and the third terminal device, and the identification information corresponds to the second terminal device and the third terminal device. It will be appreciated that if the first terminal device shares the first resource to more terminal devices, the identification information may accordingly also include the identities of the more terminal devices. The specific implementation of the identification information of the terminal device may refer to the related content of S504, which is not described herein again. If the first terminal device shares the first resource to the second terminal device, the second terminal device is an opposite terminal device of the first terminal device, and the third indication information may not include the identification information.
Similar to the second indication information in fig. 7, if the first terminal device shares the first resource to a plurality of terminal devices, however, the first terminal device does not indicate which of the first resource can be used by the second terminal device and the third terminal device. In this scenario, after the plurality of terminal devices receive the second indication information, the plurality of terminal devices contend to use the first resource, which may cause resource conflict. For this reason, if the first terminal device allows multiple terminal devices to share the first resource, the first terminal device further needs to indicate which of the first resources the respective terminal devices are allowed to share, so as to reduce resource conflict.
For example, the third indication information further includes shared time information to indicate which of the first resources the first terminal device allows other terminal devices to use. For example, the first terminal device shares the first resource with the second terminal device, and accordingly, the shared time information includes fifth time information, and the fifth time information is used to indicate a time domain length of a sixth resource in the first resource. The second terminal device may transmit data on the sixth resource. For another example, the first terminal device shares the first resource to the second terminal device and the third terminal device, and accordingly, the shared time information includes fifth time information and sixth time information. The fifth time information is used to indicate a time domain length of the sixth resource. The sixth time information is used to indicate a time domain length of a seventh resource in the first resources. The third terminal device may transmit data at the seventh resource. A set or list of multiple time domain lengths may be predefined or configured by the network device. A time information may comprise a value in the set. Alternatively, one time information may include an index of a row in the list. It is to be understood that, if the time domain lengths of the resources shared by the first terminal device to the respective terminal devices are the same, the time domain lengths may be predetermined to be a fixed length, and the third indication information may not include time information.
The third indication information further includes offset information. The offset information may include one or more offset values, and the shared time information determines a time domain start position of a resource that can be used by each terminal device. In possible implementations, a set or list of multiple offset values may be predefined or configured by the network device. The first offset may comprise a value in the set. Alternatively, the first offset may comprise a row index in the list. In consideration of the transceiving conversion time between the first terminal device transmission and the other terminal device transmission, the resource shared to the other terminal device may be occupied by another terminal device considering that the channel is idle. In this case, the remaining resources of the first resource are no longer reliable for other terminal devices sharing the first resource. Therefore, the receiving and transmitting conversion time or the transmitting and receiving conversion time can be reduced as much as possible, and the COT initialized by the first terminal equipment is ensured not to be interrupted.
In the third indication information, the flags in the flag information may be sorted from LSB to MSB, and the offset value and the time information corresponding to the flag information are sorted in the order of the flag information. Similar to fig. 10, each terminal device receives the third indication information, and determines a time domain start position of the resource that can be shared and a time domain length of the resource that can be shared according to the shared time information and/or the identification information.
In this embodiment, after receiving the third indication information, the other terminal devices may not perform LBT when sharing the resource in the first resource according to the third indication information. Alternatively, the other terminal device may determine whether to use the sharable resource according to the result of LBT. If the result of LBT is that the channel is free, other terminal devices may use sharable resources. If the LBT result is that the channel is not idle, other terminal equipment does not access the channel. It is understood that here the LBT may be type2A LBT, type2B LBT or type2C LBT.
It can be understood that, without negotiation, the first terminal device cannot determine whether there is data to be sent by another terminal device, and cannot determine whether the resource shared by the first terminal device for another terminal device meets the requirement of sending delay of another terminal device. This may cause the other terminal devices not to use the resource shared by the first terminal device to the other terminal devices, and thus the resource may be occupied by another terminal device as an idle resource, which may result in interruption of the first resource. Therefore, other terminal devices which need to share the first terminal device may provide some auxiliary information for the first terminal device, so that the first terminal device reasonably allocates shared resources for the other terminal devices by using the auxiliary information as a reference, so as to meet the transmission requirements of each terminal device and the QoS requirements of transmission data as much as possible. The further terminal device may be a terminal device in the sidelink, and may also be a terminal device of another system.
S1100a, the second terminal device sends the third request information to the first terminal device, and correspondingly, the first terminal device receives the third request information.
The third request information may be used by the first terminal device to determine the third indication information. The third request message may include one or more of the following: priority information, delay information, and resource information. The priority information may be used to indicate the priority of data to be sent by the second terminal device. The delay information may be used to indicate a delay of the data to be transmitted by the second terminal device. The delay of the data to be sent by the second terminal device may be understood as a remaining delay of the data to be sent by the second terminal device, for example, a duration of the data to be sent by the second terminal device is 10ms, but the data to be sent by the second terminal device starts to be sent from the 3 rd ms, and then the remaining delay of the data to be sent by the second terminal device is 7ms. For example, the delay information may be a Packet Delay Budget (PDB). The resource information may be used to indicate frequency domain resources used by the second terminal device.
S1100b, the third terminal device sends a fourth request message to the first terminal device, and the first terminal device receives the fourth request message accordingly.
It is understood that other terminal devices, like the second terminal device, may send request information like the third request information to the first terminal device. For example, the third terminal device transmits the fourth request information to the first terminal device. The content included in the fourth request message and the sending manner may refer to the related content of the third request message, which is not described herein again. The first terminal device may receive request information from a plurality of terminal devices and determine whether to share the first resource for the plurality of terminal devices. Further, a starting time domain position and a time domain length of a resource shared by the plurality of terminal devices, respectively, are determined so as to make the first resource uninterrupted as much as possible. It should be noted that S1100a and S1100b are not necessarily steps to be executed, and are illustrated by broken lines in fig. 11.
Taking the first terminal device may determine whether to share the first resource for the second terminal device according to the third request information, there may be the following cases.
In case one, after the first terminal device sends the HARQ, the retransmission data is not received within the first duration. This may be the case when the second terminal device has no available resources to transmit the retransmitted data for the first duration. The first terminal device may share the first resource to the second terminal device. That is, after the first terminal device sends the HARQ, the first terminal device sends the third indication information to the second terminal device if the retransmission data is not received within the first time duration. The first time length may be calculated from an end time or a start time of the first terminal device transmitting HARQ. For example, if the first duration is in units of slots, the first duration is calculated from the slot in which the HARQ is transmitted. The first time period may be configured or predefined or preconfigured by the network device. The first duration may be an absolute time, or may also be a time period, a time window, or a time interval, which is not limited in this embodiment of the present application.
In case two, after the first terminal device sends the data, the HARQ for the data is not received within the second duration. This case may consider that the second terminal device has no available resources to transmit HARQ for the second duration. The first terminal device may share the first resource to the second terminal device. That is, after the first terminal device sends the data, the HARQ of the data is not received within the second duration, and the first terminal device sends the third indication information to the second terminal device. It can be understood that the second duration is similar to the first duration, and for specific implementation, reference may be made to the related content of the first duration, which is not described herein again.
And in case three, the network equipment instructs the first terminal equipment to share the first resource. For example, the network device sends fourth indication information to the first terminal device, where the fourth indication information is used to indicate that the first terminal device shares the first resource. And the first terminal equipment receives the fourth indication information and sends third indication information.
In the embodiment of the present application, the number of terminal devices that can share the first resource may be predefined or preconfigured or the network device may configure. And the first terminal equipment indicates the initial time domain position and the time domain duration of the shared resource for the plurality of terminal equipment according to the number. The terminal device that can share the first resource may be a peer device of the first terminal device.
According to the embodiment of the application, the first terminal device actively shares the first resource to the plurality of terminal devices. The third indication information transmitted by the first terminal device may include identification information of the plurality of terminal devices. The plurality of terminal devices may determine a starting time domain position and a time domain length of the sharable resource based on the respective identification information. Therefore, the resource conflict probability of a plurality of terminal devices accessing the channel simultaneously in the side link can be reduced. In addition, a plurality of terminal devices jointly and continuously occupy the channel for a period of time, and channel interruption is avoided as much as possible, so that the data transmission delay of each terminal device is reduced.
In the embodiments provided by the present application, the method provided by the embodiments of the present application is introduced from the perspective of interaction between the first terminal device and the second terminal device, respectively. In order to implement the functions in the method provided by the embodiment of the present application, the first terminal device and the second terminal device may include a hardware structure and/or a software module, and the functions are implemented in the form of a hardware structure, a software module, or a hardware structure plus a software module. Whether any of the above functions is implemented as a hardware structure, a software module, or a combination of a hardware structure and a software module depends upon the particular application and design constraints imposed on the technical solution.
The embodiment of the application provides a communication device based on the same inventive concept as the method embodiment. The following describes a communication device for implementing the above method in the embodiment of the present application with reference to the drawings.
As shown in fig. 12, which is a possible exemplary block diagram of a communication apparatus according to the present application, the communication apparatus 1200 may correspondingly implement the functions or steps implemented by the first terminal device or the second terminal device in the foregoing method embodiments. The communication device may include a processing module 1210 and a transceiver module 1220. Optionally, a storage module may be included, which may be used to store instructions (code or programs) and/or data. The processing module 1210 and the transceiver module 1220 may be coupled with the storage module, for example, the transceiver module 1220 may read instructions (codes or programs) and/or data in the storage module to implement the corresponding method. The modules can be arranged independently, or can be partially or completely integrated.
It should be understood that the transceiver module 1220 may be a processor or a controller, such as a general purpose Central Processing Unit (CPU), a general purpose processor, a Digital Signal Processing (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. The transceiver module 1220 is an interface circuit of the apparatus for receiving signals from other apparatuses. For example, when the device is implemented in the form of a chip, the transceiving module 1220 is an interface circuit of the chip for receiving a signal from another chip or device, or an interface circuit of the chip for transmitting a signal to another chip or device.
The communication apparatus 1200 may be the first terminal device or the second terminal device in the above embodiments, and may also be a chip located in the first terminal device or the second terminal device. For example, when the communication apparatus 1200 is a first terminal device or a second terminal device, the processing module 1210 may be a processor, for example, and the transceiving module 1220 may be a transceiver, for example. Optionally, the transceiver may comprise radio frequency circuitry and the storage unit may be, for example, a memory. For example, when the communication apparatus 1200 is a chip for a network device, a terminal device or a location management device, the processing module 1210 may be a processor, and the transceiver module 1220 may be an input/output interface, a pin or a circuit, for example. The processing module 1210 can execute computer executable instructions stored in a storage unit, optionally, the storage unit is a storage unit in the chip, such as a register, a cache, and the like, and the storage unit can also be a storage unit located outside the chip in the network device, the terminal device, or the location management device, such as a read-only memory (ROM) or another type of static storage device that can store static information and instructions, a Random Access Memory (RAM), and the like.
In some possible implementations, the communication apparatus 1200 can correspondingly implement the behavior and the function of the first terminal device in the foregoing method embodiments. The communication apparatus 1200 may be the first terminal device, a component (e.g., a chip or a circuit) applied in the first terminal device, or a chip set in the first terminal device or a part of the chip for performing the related method function.
For example, the transceiver module 1220 may be used to perform all receiving or transmitting operations performed by the first terminal device in the embodiment shown in fig. 2. Such as S201, S202 in the embodiment shown in fig. 2, and/or other processes for supporting the techniques described herein. The processing module 1210 may be used to perform all operations except transceiving operations performed by the first terminal device in the embodiment shown in fig. 2. Such as S203 in the embodiment shown in fig. 2, and/or other processes for supporting the techniques described herein.
In some embodiments, the transceiving module 1220 is configured to transmit the first indication information to the second terminal device, and receive the first request information from the second terminal device; the transceiving module 1220 receives the first request message, and the processing module 1210 determines to stop using the first resource. The first indication information is used to indicate a first resource of the first terminal device, for example, an initial COT of the first terminal device. The first request information may include one or more of the following information: first information, first time information, or first priority information. The first information is used to indicate that the second terminal device requests to use the first resource. The first time information is used for indicating the time domain length of a second resource, and the second resource is a part of the first resource. The first priority information is used to indicate the priority of the data to be transmitted by the second terminal device.
For example, the transceiver module 1220 may be used to perform all receiving or transmitting operations performed by the first terminal device in the embodiment shown in fig. 7. Such as S701, S702, S703, and/or other processes for supporting the techniques described herein, in the embodiment shown in fig. 7. Processing module 1210 may be used to perform all operations except transceiving operations performed by the first terminal device in the embodiment shown in fig. 7, and/or other processes to support the techniques described herein.
In some embodiments, the transceiver module 1220 is configured to send the first indication information to the second terminal device, and receive the first request information from the second terminal device and send the second indication information to the second terminal device. Wherein the first indication information is used for indicating a first resource of the first terminal device. The first request information may include one or more of the following information: first information, first time information, or first priority information. The first information is used to indicate that the second terminal device requests use of the first resource. The first time information is used for indicating the time domain length of a second resource, and the second resource is a part of the first resource. The first priority information is used for indicating the priority of data to be transmitted by the second terminal device. The second indication information includes one or more of the following information: third information, shared time information, offset information, or identification information. Wherein the third information is used to indicate whether the second terminal device is able to use the first resource. The shared time information includes third time information indicating a time domain length of a third resource, which is a partial resource of the first resource. The offset information includes a first offset value used to determine a time domain starting position of the third resource. The identification information includes a first identification indicating the second terminal device.
As an alternative implementation, the transceiver module 1220 is further configured to send the first indication information to the third terminal device, and receive the second request information from the third terminal device. Wherein the second request information comprises one or more of the following information: second information, second time information, or second priority information. The third information is used to indicate that the third terminal device requests to use the first resource. The second time information is used for indicating the time domain length of a fourth resource, and the fourth resource is a part of the first resource. The second priority information is used to indicate the priority of the data to be transmitted by the third terminal device.
As an optional implementation manner, the transceiver module 1220 is further configured to send second indication information to the third terminal device, where the third information is further configured to indicate whether the third terminal device is capable of using the first resource. The shared time information further includes fourth time information, where the fourth time information is used to indicate a time domain length of a fifth resource, and the fifth resource is a partial resource of the first resource. The offset information further includes a second offset value, and the second offset value and/or the third time information are used to determine a time domain starting position of the fifth resource. The identification information further includes a second identification for indicating the third terminal device.
As an alternative implementation manner, the transceiving module 1220 is configured to send second indication information to the second terminal device, where the second indication information includes one or more of the following conditions, and the transceiving module 1220 sends the second indication information to the second terminal device: the priority of the data to be sent by the second terminal device is higher than that of the data sent by the first terminal device; the priority of the data to be sent by the second terminal device is higher than the first preset priority threshold.
As an optional implementation manner, the time domain resource carrying the first request information is the same as the time domain resource carrying the HARQ. The frequency domain resource carrying the first request information is different from the frequency domain resource carrying the HARQ.
As an optional implementation manner, the time domain resource carrying the first request information is the same as the time domain resource carrying the HARQ. And the code domain resource for bearing the first request information is different from the code domain resource for bearing the HARQ.
For example, the transceiver module 1220 may be used to perform all receiving or transmitting operations performed by the first terminal device in the embodiment shown in fig. 11. Such as S1100a, S1100b, S1101 in the embodiment shown in fig. 11 and/or other processes for supporting the techniques described herein. Processing module 1210 may be used to perform all operations performed by the first terminal device in the embodiment shown in fig. 11, except transceiving operations, and/or other processes to support the techniques described herein.
In some embodiments, the processing module 1210 is configured to determine the third indication information. The transceiving module 1220 is configured to send third indication information to the second terminal device. Wherein the third indication information includes shared time information and identification information. The shared time information includes fifth time information indicating a time domain length of the sixth resource. The sixth resource is a part of or all of the first resource of the first terminal apparatus. The sixth resource is used for the second terminal device to transmit data. The identification information includes a first identification indicating the second terminal device.
As an optional implementation manner, the transceiving module 1220 sends the third indication information to the second terminal device, including:
and transmitting the third indication information to a plurality of terminal devices including the second terminal device and the third terminal device. Wherein the shared time information further includes sixth time information, and the sixth time information is used for indicating a time domain length of the seventh resource. The seventh resource is a part of or all of the first resource of the first terminal device, and the seventh resource is used for the third terminal device to transmit data. The identification information further includes a second identification indicating a third terminal device. The third indication information further includes offset information, the offset information is used for determining a starting position of the sixth resource, and the offset information and the shared time information are used for determining a time domain starting position of the seventh resource.
As an alternative implementation, the transceiver module 1220 is further configured to receive a third request message from the second terminal device. The third request information is used to determine third indication information. The third request information includes priority information and/or latency information. The priority information is used for indicating the priority of the data to be transmitted by the second terminal device. The delay information is used to indicate a delay of the data to be transmitted by the second terminal device.
As an optional implementation manner, the transceiver module 1220 sends the third indication information to the second terminal device, where the third indication information includes one or more of the following conditions, and the transceiver module 1220 sends the third indication information to the second terminal device: the first terminal device receives fourth indication information from the network equipment, wherein the fourth indication information is used for indicating that the second terminal device can share the first resource; the first terminal device does not receive the retransmission of the first data within a first time length after sending the HARQ message of the first data; and the first terminal device does not receive the HARQ message of the second data in a second time length after the second data is sent.
In some possible embodiments, the communication apparatus 1200 can correspondingly implement the behavior and function of the second terminal device in the foregoing method embodiments. For example, the communication apparatus 1200 may be the second terminal device, a component (e.g., a chip or a circuit) applied in the second terminal device, or a chip set in the second terminal device or a part of the chip for performing the related method function.
For example, the transceiving module 1220 may be used to perform all receiving or transmitting operations performed by the second terminal device in the embodiment shown in fig. 2. Such as S201, S202 in the embodiment shown in fig. 2, and/or other processes for supporting the techniques described herein. The processing module 1210 is configured to perform all operations performed by the second terminal device, except transceiving operations, as in the embodiment illustrated in fig. 2, and/or other processes to support the techniques described herein.
In some embodiments, the transceiver module 1220 is configured to receive a first indication message from a first terminal device and send a first request message to the first terminal device. Wherein the first indication information is used for indicating the first resource of the first terminal device, and the first request information may include one or more of the following information: first information, first time information, or first priority information. The first information is used to indicate that the second terminal device requests to use the first resource. The first time information is used for indicating the time domain length of a second resource, and the second resource is a part of the first resource. The first priority information is used for indicating the priority of data to be transmitted by the second terminal device.
As an alternative implementation manner, the transceiver module 1220 sends the first request message to the first terminal device when one or more of the following conditions are satisfied: the second terminal device successfully receives the data sent by the first terminal device; the priority of the data to be sent by the second terminal device is higher than that of the data sent by the first terminal device; the priority value of the data to be sent of the second terminal device is higher than a first preset priority threshold; the number of times of LBT failure of the second terminal device is higher than a second preset threshold, and the result of the LBT failure is that the channel is not idle.
As an optional implementation manner, the time domain resource carrying the first request information is the same as the time domain resource carrying the HARQ, and the frequency domain resource carrying the first request information is different from the frequency domain resource carrying the HARQ.
As an optional implementation manner, the time domain resource carrying the first request information is the same as the time domain resource carrying the HARQ, and the code domain resource carrying the first request information is different from the code domain resource carrying the HARQ.
For another example, the transceiver module 1220 may be used to perform all receiving or transmitting operations performed by the second terminal device in the embodiment shown in fig. 7. Such as S701, S702, S703 and/or other processes for supporting the techniques described herein in the embodiment shown in fig. 7. The processing module 1210 is configured to perform all operations performed by the second terminal device, except transceiving operations, in the embodiment illustrated in fig. 7, and/or other processes to support the techniques described herein.
In some embodiments, the transceiver module 1220 is configured to receive the first indication information from the first terminal device, send the first request information to the first terminal device, and receive the second indication information from the first terminal device. The first indication information is used for indicating a first resource of the first terminal device. The first request information includes one or more of the following information: first information, first time information, or first priority information. The first information is used to indicate that the second terminal device requests use of the first resource. The first time information is used for indicating the time domain length of a second resource, and the second resource is a part of the first resource. The first priority information is used to indicate the priority of the data to be transmitted by the second terminal device. The second indication information includes one or more of the following information: third information, shared time information, offset information, or identification information. Wherein the third information is used to indicate whether the second terminal device is able to use the first resource. The shared time information includes third time information, where the third time information is used to indicate a time domain length of a third resource, and the third resource is a partial resource in the first resource. The offset information includes a first offset value used to determine a time domain starting position of the third resource. The identification information includes a first identification indicating the second terminal device.
As an optional implementation manner, the third information is further used for indicating whether the third terminal device can use the first resource. The shared time information further includes fourth time information, where the fourth time information is used to indicate a time domain length of a fifth resource, and the fifth resource is a partial resource of the first resource. The offset information further comprises a second offset value, and the second offset value and/or the third time information is used for determining a time domain starting position of the fifth resource. The identification information further includes a second identification for indicating the third terminal device.
As an alternative implementation manner, the transceiving module 1220 sends the first request message to the first terminal device when one or more of the following conditions are met: the second terminal device successfully receives the data from the first terminal device; the priority of the data to be sent by the second terminal device is higher than that of the data sent by the first terminal device; the priority of the data to be sent by the second terminal device is higher than a first preset priority threshold; the number of times of LBT failure of the second terminal device is larger than a second preset threshold, and the LBT failure is that the channel is not idle.
As an optional implementation manner, the time domain resource carrying the first request information is the same as the time domain resource carrying the HARQ, and the frequency domain resource carrying the first request information is different from the frequency domain resource carrying the HARQ. Or the time domain resource carrying the first request information is the same as the time domain resource carrying the HARQ, and the code domain resource carrying the first request information is different from the code domain resource carrying the HARQ.
As an optional implementation manner, the time domain resource carrying the second indication information is the same as the time domain resource carrying the HARQ, and the frequency domain resource carrying the second indication information is different from the frequency domain resource carrying the HARQ. Or the time domain resource carrying the second indication information is the same as the time domain resource carrying the HARQ, and the code domain resource carrying the second indication information is different from the code domain resource carrying the HARQ.
As another example, the transceiving module 1220 may be used to perform all receiving or transmitting operations performed by the second terminal device in the embodiment shown in fig. 11. Such as S1100a, S1100b, S1101 in the embodiment shown in fig. 11 and/or other processes for supporting the techniques described herein. Processing module 1210 may be used to perform all operations except transceiving operations performed by a second terminal device in the embodiment shown in fig. 11, and/or other processes to support the techniques described herein.
In some embodiments, the transceiving module 1220 receives a third indication from the first terminal device and transmits data on a sixth resource according to the third indication. Wherein the third indication information includes shared time information and identification information. The shared time information includes fifth time information indicating a time domain length of sixth resources, where the sixth resources are some or all of the first resources of the first terminal device. The identification information includes a first identification indicating the second terminal device.
As an optional implementation manner, the shared time information further includes sixth time information, and the sixth time information is used to indicate a time domain length of the seventh resource. The seventh resource is a part of or all of the first resource of the first terminal device, and the seventh resource is used for the third terminal device to transmit data. The identification information further includes a second identification for indicating the third terminal device. The third indication information further includes offset information for determining a start position of the sixth resource. The offset information and the shared time information are used to determine a time domain starting position of the seventh resource.
As an optional implementation manner, the transceiver module 1220 sends data on the sixth resource according to the third indication information, including: as a result of the LBT, the channel is idle, and the transceiver module 1220 transmits data on the sixth resource.
As an alternative implementation, the transceiver module 1220 is further configured to send the third request message to the first terminal device. The third request information is used to determine third indication information. The third request information includes priority information and/or latency information. The priority information is used for indicating the priority of data to be sent by the second terminal device. The delay information is used to indicate a delay of the data to be transmitted by the second terminal device.
It should be understood that the processing module 1210 in the embodiments of the present application may be implemented by a processor or a processor-related circuit component, and the transceiver module 1220 may be implemented by a transceiver or a transceiver-related circuit component or a communication interface.
Fig. 13 shows a communication apparatus 1300 provided in this embodiment of the present application, where the communication apparatus 1300 may be a first terminal device, and is capable of implementing a function of the first terminal device in the method provided in this embodiment of the present application. Alternatively, the communications apparatus 1300 may be a second terminal device, and is capable of implementing a function of the second terminal device in the method provided in this embodiment; the communication apparatus 1300 may also be an apparatus capable of supporting the first terminal device to implement the corresponding functions in the method provided in the embodiment of the present application, or an apparatus capable of supporting the second terminal device to implement the corresponding functions in the method provided in the embodiment of the present application. The communication device 1300 may be a chip system. In the embodiment of the present application, the chip system may be composed of a chip, and may also include a chip and other discrete devices.
In a hardware implementation, the transceiver module 1220 may be a transceiver, and the transceiver is integrated in the communication device 1300 to form the communication interface 1310.
The communications apparatus 1300 includes at least one processor 1320 configured to implement or support the communications apparatus 1300 to implement the functions of the first terminal device or the second terminal device in the method provided by the embodiment of the present application. For details, reference is made to the detailed description in the method example, which is not repeated herein.
The communications apparatus 1300 can also include at least one memory 1330 for storing program instructions and/or data. A memory 1330 is coupled to the processor 1320. The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, and may be in an electrical, mechanical or other form, which is used for information interaction between the devices, units or modules. The processor 1320 may operate in conjunction with the memory 1330. Processor 1320 may execute program instructions and/or data stored in memory 1330 to cause communications device 1300 to implement a corresponding method. At least one of the at least one memory may be included in the processor. Note that the memory 1330 is not necessarily required, and is illustrated with a dotted line in fig. 13.
The communications apparatus 1300 can also include a communication interface 1310 for communicating with other devices over a transmission medium, such that the apparatus used in the communications apparatus 1300 can communicate with other devices. Exemplarily, when the communication apparatus is a first terminal device, the other device is a second terminal device; or, when the communication device is the second terminal device, the other device is the first terminal device. Processor 1320 may transceive data using communication interface 1310. The communication interface 1310 may specifically be a transceiver.
The embodiment of the present application does not limit the specific connection medium among the communication interface 1310, the processor 1320, and the memory 1330. In fig. 13, the memory 1330, the processor 1320, and the communication interface 1310 are connected by a bus 1340, which is indicated by a thick line in fig. 13, and the connection manner among other components is only for illustrative purpose and is not limited thereto. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 13, but this is not intended to represent only one bus or type of bus.
In the present embodiment, the processor 1320 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or discrete hardware components, and may implement or perform the methods, steps, and logic blocks disclosed in the present embodiment. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor.
In the embodiment of the present application, the memory 1330 may be a non-volatile memory, such as a Hard Disk Drive (HDD) or a solid-state drive (SSD), and may also be a volatile memory (RAM), for example, a random-access memory (RAM). The memory is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such. The memory in the embodiments of the present application may also be circuitry or any other device capable of performing a storage function for storing program instructions and/or data.
The communication device in the above embodiments may be a terminal or a circuit, or may be a chip applied to a terminal or other combined device or component having the above terminal function. When the communication device is a terminal, the transceiver module may be a transceiver, and may include an antenna, a radio frequency circuit, and the like, and the processing module may be a processor, for example: a CPU. When the communication device is a component having the above terminal functions, the transceiver module may be a radio frequency unit, and the processing module may be a processor. When the communication device is a system on a chip, the communication device may be an FPGA, an ASIC, a system on chip (SoC), a CPU, a Network Processor (NP), a DSP, a Micro Controller Unit (MCU), a Programmable Logic Device (PLD), or other integrated chip. The processing module may be a processor of a system-on-chip. The transceiver module or the communication interface may be an input-output interface or an interface circuit of the chip system. For example, the interface circuit may be a code/data read/write interface circuit. The interface circuit can be used for receiving code instructions (the code instructions are stored in the memory, can be directly read from the memory, or can also be read from the memory through other devices) and transmitting the code instructions to the processor; the processor may be configured to execute the code instructions to perform the methods in the above-described method embodiments. Also for example, the interface circuit may be a signal transmission interface circuit between the communication processor and the transceiver.
For example, the communication device in the above embodiments may be a chip, which includes a logic circuit and an input/output interface, and may further include a memory. The input/output interface may be configured to receive code instructions (the code instructions are stored in the memory, and may be read directly from the memory, or may also be read from the memory via other devices) and transmit the code instructions to the logic circuit; the logic circuit may be configured to execute the code instructions to perform the method in the above method embodiment. Alternatively, the input/output interface may be a signal transmission interface circuit between the logic circuit and the transceiver.
Fig. 14 shows a simplified schematic diagram of a terminal device. For ease of understanding and illustration, in fig. 14, the terminal device is exemplified by a mobile phone. As shown in fig. 14, 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 vehicle-mounted unit, 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 mainly used for receiving data input by users and outputting data to the users. It should be noted that some kinds of apparatuses 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 device, 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. 14. In an actual 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 of the present application.
In the embodiment of the present application, the antenna and the rf circuit having the transceiving function may be regarded as a transceiving unit of the apparatus, and the processor having the processing function may be regarded as a processing unit of the apparatus. As shown in fig. 14, the apparatus includes a transceiving unit 1410 and a processing unit 1420. The transceiving unit 1410 may also be referred to as a transceiver, a transceiving device, etc. The processing unit 1420 may also be referred to as a processor, processing board, processing module, processing device, or the like. Alternatively, a device for implementing a receiving function in the transceiving unit 1410 may be regarded as a receiving unit, and a device for implementing a transmitting function in the transceiving unit 1410 may be regarded as a transmitting unit, that is, the transceiving unit 1410 includes a receiving unit and a transmitting unit. Transceiver unit 1410 may also sometimes be referred to as a transceiver, or a transceiver circuit, etc. 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 1410 is configured to perform the transmitting operation and the receiving operation of the first terminal device or the second terminal device in the foregoing method embodiments, and the processing unit 1420 is configured to perform other operations besides the transceiving operation on the first terminal device or the second terminal device in the foregoing method embodiments.
For example, in one implementation, transceiving unit 1410 may be configured to perform transceiving operations performed by the first terminal device in the embodiments illustrated in fig. 2 or fig. 7 or fig. 11, and/or other processes to support the techniques described herein. Processing unit 1420 may be used to perform all operations except transceiving operations performed by the first terminal device in the embodiment shown in fig. 2, and/or other processes to support the techniques described herein. For example, in one implementation, transceiving unit 1410 may be configured to perform transceiving operations performed by a second terminal device in the embodiments illustrated in fig. 2 or fig. 7 or fig. 11, and/or other processes to support the techniques described herein. Processing unit 1420 may be used to perform all operations performed by the second terminal device in the embodiment shown in fig. 2, except transceiving operations, and/or other processes to support the techniques described herein.
When the communication device is a chip-like device or circuit, the device may include a transceiving unit and a processing unit. The transceiver unit may be an input/output circuit and/or a communication interface; the processing unit is an integrated processor or microprocessor or integrated circuit.
The embodiment of the present application further provides a communication system, and specifically, the communication system includes a plurality of terminal devices, or may further include a network device, or may further include more terminal devices. Illustratively, the communication system includes a plurality of terminal devices for implementing the related functions of fig. 2 or fig. 7 or fig. 11 described above. These multiple terminal devices are used to implement the functions of the first terminal device or the second terminal device described above in connection with fig. 2, 7, or 11, respectively. For details, please refer to the related description in the above method embodiments, which is not repeated herein.
Also provided in an embodiment of the present application is a computer-readable storage medium, which includes instructions that, when executed on a computer, cause the computer to perform the method performed by the first terminal device or the second terminal device in fig. 2 or fig. 7 or fig. 11.
Also provided in an embodiment of the present application is a computer program product including instructions that, when executed on a computer, cause the computer to perform the method performed by the first terminal device or the second terminal device in fig. 2 or fig. 7 or fig. 11.
The embodiment of the present application provides a chip system, where the chip system includes a processor and may further include a memory, and is configured to implement the function of the first terminal device or the second terminal device in the foregoing method. The chip system may be formed by a chip, and may also include a chip and other discrete devices.
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 logical blocks and steps (step) 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 can be clearly understood by those skilled in the art that, for convenience and simplicity 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 type of logical functional division, and other divisions may be realized in practice, for example, multiple 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.
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: a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk or an optical disk, and various media capable of storing program codes.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (23)

1. A method for resource sharing, comprising:
sending first indication information to a second terminal device, wherein the first indication information is used for indicating first resources of a first terminal device;
receiving first request information from the second terminal device, wherein the first request information comprises one or more of the following information: first information, first time information, or first priority information; wherein the first information is used to indicate that the second terminal device requests to use the first resource; the first time information is used for indicating the time domain length of a second resource, and the second resource is a part of the first resource; the first priority information is used for indicating the priority of data to be sent by the second terminal device;
sending second indication information to the second terminal device, wherein the second indication information comprises one or more of the following information: third information, shared time information, offset information, or identification information; wherein the third information is used to indicate whether the second terminal device is capable of using the first resource; the shared time information comprises third time information, the third time information is used for indicating the time domain length of a third resource, and the third resource is a part of the first resource; the offset information comprises a first offset value, and the first offset value is used for determining a time domain starting position of the third resource; the identification information includes a first identification indicating the second terminal device.
2. The method of claim 1, wherein the method further comprises:
transmitting the first indication information to a third terminal device;
receiving second request information from the third terminal device, the second request information including one or more of the following information: second information, second time information, or second priority information; wherein the second information is for indicating that the third terminal device requests use of the first resource; the second time information is used for indicating the time domain length of a fourth resource, and the fourth resource is a part of the first resource; the second priority information is used for indicating the priority of data to be sent by the third terminal device.
3. The method of claim 2, wherein the method further comprises:
transmitting the second indication information to the third terminal device, wherein the third information is further used for indicating whether the third terminal device can use the first resource;
the shared time information further includes fourth time information, where the fourth time information is used to indicate a time domain length of a fifth resource, and the fifth resource is a partial resource in the first resource;
the offset information further comprises a second offset value, and the second offset value and/or the third time information is used for determining a time domain starting position of the fifth resource;
the identification information further includes a second identification indicating the third terminal device.
4. The method of claim 2 or 3, wherein sending the second indication information to the second terminal device comprises: transmitting the second indication information to the second terminal device, satisfying one or more of:
the first priority information indicates a priority higher than that of data transmitted by the first terminal apparatus;
the priority indicated by the first priority information is higher than a first preset priority threshold.
5. The method of any one of claims 1 to 4,
the time domain resource bearing the first request information is the same as the time domain resource bearing the hybrid automatic repeat request HARQ, and the frequency domain resource bearing the first request information is different from the frequency domain resource bearing the HARQ.
6. The method according to any of claims 1-4, wherein the time domain resources carrying the first request information and the time domain resources carrying hybrid automatic repeat request HARQ are the same, and the code domain resources carrying the first request information and the code domain resources carrying HARQ are different.
7. A method for resource sharing, comprising:
receiving first indication information from a first terminal device, wherein the first indication information is used for indicating first resources of the first terminal device;
transmitting first request information to the first terminal device, the first request information including one or more of the following information: first information, first time information, and first priority information; wherein the first information is used to indicate that a second terminal device requests to use the first resource; the first time information is used for indicating the time domain length of a second resource, and the second resource is a part of the first resource; the first priority information is used for indicating the priority of data to be sent by the second terminal device;
receiving second indication information from the first terminal device, wherein the second indication information comprises one or more of the following information: third information, shared time information, offset information, or identification information; wherein the third information is used to indicate whether the second terminal device is capable of using the first resource; the shared time information includes third time information, where the third time information is used to indicate a time domain length of a third resource, and the third resource is a partial resource in the first resource; the offset information comprises a first offset value, and the first offset value is used for determining a time domain starting position of the third resource; the identification information includes a first identification indicating the second terminal device.
8. The method of claim 7, wherein the third information is further used to indicate whether a third terminal device is able to use the first resource;
the shared time information further includes fourth time information, where the fourth time information is used to indicate a time domain length of a fifth resource, and the fifth resource is a partial resource in the first resource;
the offset information further includes a second offset value, and the second offset value and/or third time information are used to determine a time domain starting position of the fifth resource;
the identification information further includes a second identification for indicating the third terminal device.
9. The method of claim 7 or 8, wherein one or more of the following is satisfied, and wherein the first request information is sent by the second terminal device to the first terminal device:
the second terminal device successfully receives the data from the first terminal device;
the priority of the data to be sent by the second terminal device is higher than that of the data sent by the first terminal device;
the priority of the data to be sent by the second terminal device is higher than a first preset priority threshold;
the number of Listen Before Talk (LBT) failures of the second terminal device is larger than a second preset threshold, and the LBT failures are that the channel is not idle.
10. The method according to any of claims 7-9, wherein the time domain resources carrying the first request information and the time domain resources carrying hybrid automatic repeat request HARQ are the same, and the frequency domain resources carrying the first request information and the frequency domain resources carrying HARQ are different.
11. The method according to any of claims 7-9, wherein the time domain resources carrying the first request information and the time domain resources carrying hybrid automatic repeat request HARQ are the same, and the code domain resources carrying the first request information and the code domain resources carrying HARQ are different.
12. A method for resource sharing, comprising:
determining third indication information, where the third indication information includes shared time information and identification information, where the shared time information includes fifth time information, the fifth time information is used to indicate a time domain length of a sixth resource, the sixth resource is a part of or all of a first resource of a first terminal apparatus, and the sixth resource is used for a second terminal apparatus to send data; the identification information comprises a first identification used for indicating the second terminal device;
and transmitting the third indication information to the second terminal device.
13. The method of claim 12, wherein transmitting the third indication information to the second terminal device comprises:
transmitting the third indication information to a plurality of terminal devices, the plurality of terminal devices including the second terminal device and a third terminal device; wherein the content of the first and second substances,
the shared time information further includes sixth time information, where the sixth time information is used to indicate a time domain length of a seventh resource, where the seventh resource is a part of or all of the first resource of the first terminal device, and the seventh resource is used for the third terminal device to send data;
the identification information further comprises a second identification for indicating the third terminal device;
the third indication information further includes offset information, the offset information is used to determine a start position of the sixth resource, and the offset information and the shared time information are used to determine a time domain start position of the seventh resource.
14. The method of claim 12 or 13, wherein the method further comprises:
receiving third request information from the second terminal device, wherein the third request information is used for determining the third indication information, and the third request information includes one or more of the following information:
priority information for indicating a priority of data to be transmitted by the second terminal device;
and the time delay information is used for indicating the time delay of the data to be sent of the second terminal device.
15. The method according to any of claims 12-14, wherein sending the third indication information to the second terminal device comprises: transmitting the third indication information to the second terminal device satisfying one or more of:
receiving fourth indication information from a network device, wherein the fourth indication information is used for indicating that the first terminal device can share the first resource;
the retransmission of the first data is not received in a first time length after the HARQ message of the first data is sent;
and after the second data is sent, the HARQ message of the second data is not received in a second time length.
16. A method for resource sharing, comprising:
receiving third indication information from a first terminal device, where the third indication information includes shared time information and identification information, where the shared time information includes fifth time information, the fifth time information is used to indicate a time domain length of a sixth resource, the sixth resource is a part of or all of a first resource of the first terminal device, and the sixth resource is used for the second terminal device to send data; the identification information comprises a first identification, and the first identification is used for indicating the second terminal device;
and transmitting data on the sixth resource according to the third indication information.
17. The method of claim 16, wherein the shared time information further comprises sixth time information indicating a time domain length of seventh resources, the seventh resources being some or all of the first resources of the first terminal apparatus, the seventh resources being used for a third terminal apparatus to transmit data;
the identification information further comprises a second identification for indicating the third terminal device;
the third indication information further includes offset information, where the offset information is used to determine a starting position of the sixth resource, and the offset information and the shared time information are used to determine a time domain starting position of the seventh resource.
18. The method of claim 16 or 17, wherein transmitting data on the sixth resource according to the third indication information comprises:
and transmitting data on the sixth resource when the channel is idle as a result of performing listen before talk LBT.
19. The method of any one of claims 16-18, further comprising:
sending third request information to the first terminal device, wherein the third request information is used for determining the third indication information, and the third request information includes one or more of the following information:
priority information for indicating a priority of data to be transmitted by the second terminal device;
and the time delay information is used for indicating the time delay of the data to be sent of the second terminal device.
20. A communication apparatus, comprising a processor and a communication interface, and a memory, the processor coupled with the communication interface to invoke computer instructions in the memory to cause the communication apparatus to perform the method of any of claims 1-6 or to cause the communication apparatus to perform the method of any of claims 12-15.
21. A communication apparatus, comprising a processor and a communication interface, and a memory, the processor coupled with the communication interface to invoke computer instructions in the memory to cause the communication apparatus to perform the method of any of claims 7-11 or to cause the communication apparatus to perform the method of any of claims 16-19.
22. A computer-readable storage medium having stored thereon computer instructions which, when executed, cause the computer to perform the method of any one of claims 1-6 or cause the computer to perform the method of any one of claims 12-15.
23. A computer-readable storage medium having stored thereon computer instructions which, when executed, cause the computer to perform the method of any one of claims 7-11 or cause the computer to perform the method of any one of claims 16-19.
CN202110903305.3A 2021-08-06 2021-08-06 Resource sharing method and communication device Pending CN115707118A (en)

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