WO2021000679A1

WO2021000679A1 - Communication method and device

Info

Publication number: WO2021000679A1
Application number: PCT/CN2020/093410
Authority: WO
Inventors: 张兴炜; 张莉莉; 黄海宁
Original assignee: 华为技术有限公司
Priority date: 2019-06-29
Filing date: 2020-05-29
Publication date: 2021-01-07
Also published as: CN112153705A; CN112153705B

Abstract

The present application relates to a communication method and device, capable of being applied to Internet of vehicles, such as V2X, LTE-V, and V2V. A first terminal device transmits first signaling to at least one second terminal device, wherein the first signaling is used for indicating time domain information and/or frequency domain information of a reserved resource, the time domain information is used for indicating a time duration occupied by the reserved resource, and the frequency domain information is used for indicating the frequency domain bandwidth of the reserved resource; the first terminal device transmits first service data or control information on the reserved resource. If other information is scheduled at present, the period or size or the like of the reserved resource may be identical to that of the resource occupied by the current scheduled information, or may also be different from that of the resource occupied by the current scheduled information. As long as the information of the reserved resource is indicated by means of the first signaling, the second terminal device can learn the position of the reserved resource, thereby improving the flexibility of resource reservation.

Description

Communication method and equipment

Cross references to related applications

This application claims the priority of a Chinese patent application filed with the State Intellectual Property Office of China, the application number is 201910581379.2, and the application name is "a communication method and equipment" on June 29, 2019, the entire content of which is incorporated into this application by reference in.

Technical field

This application relates to the field of communication technology, and in particular to a communication method and device.

Background technique

There are two modes of V2X resource allocation: mode three (mode 3) and mode four (mode 4).

Mode three is a centralized control method. In mode three, resources are allocated by a central control device (such as a base station or a relay station, etc.), and the resources are allocated to the terminal device as a signal sending end through scheduling. Unlike the mode that the base station only schedules resources once, in mode 3, the resources scheduled by the base station can also be used multiple times for the terminal equipment as the signal transmitter, which is similar to semi-persistent scheduling (SPS) The way. Centralized resource allocation is mainly for scenarios with network coverage.

The fourth mode is a distributed resource multiplexing method based on competition. The terminal equipment as the signal sending end obtains the transmission resources from the resource pool through competition. In a scenario with network coverage, the resource pool is a block of resources allocated by the base station, and each terminal device competes for a small block of resources in this block of resources. In a scenario where there is no network coverage, the resource pool is a predefined system bandwidth that can be obtained by terminal devices, and each terminal device competes for resources under the predefined system bandwidth. Among them, in mode four, the terminal device as the signal sender needs to monitor (sensing) resources before sending it to identify which resources have been occupied and which resources are available.

When the terminal device sends data, the sent data may be periodic data, and the terminal device needs to select a resource every time it sends data. The frequency of selection is high, which increases the complexity of the operation.

Summary of the invention

The embodiments of the present application provide a communication method and device to improve the flexibility of the reservation mechanism.

In a first aspect, a first communication method is provided. The method includes: a first terminal device sends first signaling to at least one second terminal device, where the first signaling is used to indicate time domain information of reserved resources and /Or frequency domain information, the time domain information is used to indicate the length of time occupied by the reserved resource, and the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource; the first terminal The device sends the first service data or control information on the reserved resource.

The method may be executed by a first communication device, and the first communication device may be a communication device or a communication device capable of supporting the communication device to implement the functions required by the method, such as a chip system. Exemplarily, the first communication device is a first terminal device. Exemplarily, the first terminal device is a first terminal device, or is a chip system set in the first terminal device for realizing the function of the terminal device, or is another device for realizing the function of the first terminal device part.

In the embodiment of the present application, the first terminal device can indicate the time domain information and/or frequency domain information of the reserved resource by sending the first signaling, and the second terminal device as the receiving end can learn the information of the reserved resource. Therefore, the first service data or control information can be received through the reserved resources at the correct location, and the resources can be directly reserved. There is no need for the first terminal device to select resources in each cycle, which reduces the complexity of the operation and also reduces The power consumption of terminal equipment due to resource selection. Through the method provided by the embodiments of this application, if other information is currently scheduled, the reserved resources may be the same as the period or size of the resources occupied by the currently scheduled information, or may not be the same, as long as the first message is passed. With the information indicating the reserved resources, the second terminal device can learn the location of the reserved resources, thereby improving the flexibility of resource reservation.

With reference to the first aspect, in a possible implementation manner of the first aspect, the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resource, including: the first The state of the first field included in the signaling is used to indicate the time domain information and/or frequency domain information of the reserved resource.

This is an explicit way of indicating, this way of indicating is relatively clear. The first field may be a newly added field in the first signaling, and is dedicated to information indicating reserved resources. Alternatively, the first field may also be an existing field in the first signaling, which is equivalent to multiplexing the existing field in the first signaling to indicate information about reserved resources.

With reference to the first aspect, in a possible implementation manner of the first aspect, the first signaling is further used to indicate one of the following information or any combination thereof:

The channel corresponding to the reserved resource;

The reserved resources are used for multiple transmissions of one transmission block;

The reserved resource is used for a single transmission of multiple transmission blocks;

The reserved resources are used for initial data transmission or data retransmission; or, the reserved resources are used for multicast services, broadcast services, or unicast services.

The first signaling may also indicate one or more of the above information, so that the content indicated by the first signaling is richer.

With reference to the first aspect, in a possible implementation manner of the first aspect, the time domain information is further used to indicate:

Time domain offset, where the time domain offset is the time interval between the time point when the first signaling is sent to the start time point of the reserved resource.

Through the time domain offset, the time domain location of the resource reserved by the second terminal device can be made clear.

A resource reservation period, where the reserved resources repeat in the time domain at intervals of the resource reservation period; and/or, the number of reservations, where the number of reservations is the reserved resource and the resource The reserved period is the number of times the interval is repeated in the time domain.

There is no restriction on the content included in the time domain information.

With reference to the first aspect, in a possible implementation manner of the first aspect, the first signaling does not include scheduling information of service data.

The first signaling may only be used to reserve resources, that is, only used to indicate information about reserved resources, and not used to schedule other service data.

With reference to the first aspect, in a possible implementation manner of the first aspect, the first signaling is also used to schedule second service data; the time domain information and/or the reserved resources Frequency domain information, including one of the following or any combination of the following:

The reserved resource has frequency hopping or no frequency hopping relative to the resource occupied by the second service data;

The position of the reserved resource is offset from the position of the resource occupied by the second service data, or there is no offset; or, the size of the reserved resource is relative to the second service The size of the resource occupied by the data has a scaling factor or has not changed.

The first signaling can also be used to schedule the second service data, which is equivalent to that the first signaling can be used to reserve resources and can also be used to schedule the second service data, and the utilization rate of the first signaling is relatively high. If the first signaling is also used to schedule the second service data, the first signaling will indicate the information of the resources occupied by the second service data. In this case, the first signaling does not need to directly indicate the reserved resources. Information, but by indicating the relationship between the resources occupied by the second service data and the reserved resources, the reserved resources can be indicated.

With reference to the first aspect, in a possible implementation of the first aspect, the relative time domain position of the reserved resource is the same as the relative time domain position of the first resource, and the frequency domain position of the reserved resource The frequency domain position of the first resource is the same, and the reserved resource is the same size as the first resource; or, the relative time domain position of the reserved resource and the relative time domain of the first resource The position has a first deviation, and/or the frequency domain position of the reserved resource and the frequency domain position of the first resource have a second deviation; and, the reserved resource and the frequency domain position of the first resource The same size

Wherein, the first resource is the resource occupied by the second service data, the relative time domain position of the first resource is the relative position of the time domain position of the first resource in a time unit, and the second resource The relative time domain position of the resource is the relative position in the time unit of the time domain position of the second resource.

If the relative position and size of the reserved resource and the first resource are the same, the second terminal device only needs to detect resources of the same size at the same frequency domain location, which can reduce the difficulty of detection by the second terminal device. Or, for example, within the time unit where the reserved resource is located, the position that is exactly the same as the relative position of the reserved resource is occupied by other resources, then the relative time domain position and/or of the reserved resource can be made The frequency domain position has a certain offset relative to the first resource, so that resource reservation can be completed, and there is an association relationship between the reserved resource and the first resource, so that the second terminal device can determine the reserved resource s position.

With reference to the first aspect, in a possible implementation manner of the first aspect, the first signaling further carries third information, and the third information is the MCS of the first service data, or the third The information is the difference between the MCS of the second service data and the MCS of the first service data.

If the sizes of the first service data and the second service data are different and the same size of resources is used for transmission, then the MCS of the first service data may be adjusted to adapt to the resources.

With reference to the first aspect, in a possible implementation manner of the first aspect, the first signaling further carries fourth information, and the fourth information is the scaling factor.

If the size of the reserved resources has a scaling factor relative to the size of the resources occupied by the second service data, the first signaling can carry the scaling factor, so that the second terminal device can determine the reserved resources according to the first signaling. The size of the resource.

With reference to the first aspect, in a possible implementation manner of the first aspect, the second service data is sent through a second resource; the reserved resource is selected from the second resource, and the second resource The third position of is associated with the first position of the reserved resource, where the first position is the position of the reserved resource in the resource pool, and the third position is the second The location of the resource in the resource pool.

The second service data occupies the second resource, which is scheduled in the first signaling, and other terminal devices can avoid the second resource by monitoring the first signaling. Then the position of the reserved resource is also located in the position of the second resource (the third resource is the resource whose relative position in the resource pool is the same as the relative position of the second resource in the resource pool), which can reduce the probability of resource conflicts, And the selection range of reserved resources has become larger and more flexible. For the second terminal device, the first information can be detected in the third resource, and the detection range is relatively small.

With reference to the first aspect, in a possible implementation of the first aspect, the time domain information is used to indicate the length of time occupied by the reserved resource, specifically:

The time domain information includes the time domain start position and time length of the reserved resource, or includes the time domain start position and time domain end position of the reserved resource.

For example, the time domain information may also include the time domain end position and time length of the reserved resources. The duration can be expressed as a specific duration, for example, the unit is milliseconds, etc., or can also be expressed as the number of symbols or the number of time slots.

With reference to the first aspect, in a possible implementation of the first aspect, the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource, specifically:

The frequency domain information includes the frequency domain start position and frequency domain bandwidth of the reserved resource, or includes the frequency domain start position and end position of the reserved resource.

For example, the time domain information may also include the time domain end position and time length of the reserved resources.

With reference to the first aspect, in a possible implementation manner of the first aspect, the first signaling is SCI, system message, RRC signaling, or MAC signaling.

The embodiment of the present application does not limit the type of the first signaling.

In a second aspect, a second communication method is provided, the method includes: a first terminal device determines a parameter of a first signaling according to reserved resources; the first terminal device sends the first signaling to at least one second terminal device , The first signaling satisfies the parameters of the first signaling, and the parameters of the first signaling are used to indicate time domain information and/or frequency domain information of the reserved resource, and the time domain information Is used to indicate the length of time occupied by the reserved resource, the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource; the first terminal device sends the first terminal device on the reserved resource One business data or control information.

The method may be executed by a first communication device, and the first communication device may be a communication device or a communication device capable of supporting the communication device to implement the functions required by the method, such as a chip system. Exemplarily, the first communication device is a first terminal device. Exemplarily, the first terminal device is the first terminal device, or is a chip system set in the first terminal device for realizing the function of the first terminal device, or is used for realizing the function of the first terminal device Other parts.

With reference to the second aspect, in a possible implementation manner of the second aspect, the parameter of the first signaling is further used to indicate one of the following information or any combination thereof:

The channel corresponding to the reserved resource;

With reference to the second aspect, in a possible implementation manner of the second aspect, in a possible implementation manner, the time domain information is further used to indicate:

With reference to the second aspect, in a possible implementation manner of the second aspect, the time domain information is further used to indicate:

With reference to the second aspect, in a possible implementation manner of the second aspect, the first signaling does not include scheduling information of service data.

With reference to the second aspect, in a possible implementation manner of the second aspect, the first signaling is also used to schedule second service data; the time domain information and/or the reserved resource Frequency domain information, including one of the following or any combination of the following:

With reference to the second aspect, in a possible implementation of the second aspect, the relative time domain position of the reserved resource is the same as the relative time domain position of the first resource, and the frequency domain position of the reserved resource The frequency domain position of the first resource is the same, and the reserved resource is the same size as the first resource; or, the relative time domain position of the reserved resource and the relative time domain of the first resource The position has a first deviation, and/or the frequency domain position of the reserved resource and the frequency domain position of the first resource have a second deviation; and, the reserved resource and the frequency domain position of the first resource The same size

With reference to the second aspect, in a possible implementation manner of the second aspect, the first signaling further carries third information, and the third information is the MCS of the first service data, or the third The information is the difference between the MCS of the second service data and the MCS of the first service data.

With reference to the second aspect, in a possible implementation manner of the second aspect, the first signaling further carries fourth information, and the fourth information is the scaling factor.

With reference to the second aspect, in a possible implementation manner of the second aspect, the second service data is sent through a second resource; the reserved resource is selected from the second resource, and the second resource The third position of is associated with the first position of the reserved resource, where the first position is the position of the reserved resource in the resource pool, and the third position is the second The location of the resource in the resource pool.

With reference to the second aspect, in a possible implementation of the second aspect, the time domain information is used to indicate the length of time occupied by the reserved resources, specifically:

With reference to the second aspect, in a possible implementation of the second aspect, the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource, specifically:

With reference to the second aspect, in a possible implementation manner of the second aspect, the first signaling is SCI, system message, RRC signaling, or MAC signaling.

Regarding the technical effects of the second aspect or various possible implementations of the second aspect, reference may be made to the introduction of the technical effects of the first aspect or the corresponding implementations of the first aspect.

In a third aspect, a third communication method is provided, the method includes: a second terminal device receives a first signaling from a first terminal device, the first signaling is used to indicate time domain information and/or reserved resources Or frequency domain information, the time domain information includes the length of time occupied by the reserved resource, the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource; the second terminal device is in the Receiving first service data or control information from the first terminal device on the reserved resource.

The method may be executed by a second communication device, and the second communication device may be a communication device or a communication device capable of supporting the communication device to implement the functions required by the method, such as a chip system. Exemplarily, the second communication device is a second terminal device. Exemplarily, the second terminal device is a second terminal device, or is a chip system set in the second terminal device for realizing the function of the second terminal device, or is used for realizing the function of the second terminal device Other parts.

With reference to the third aspect, in a possible implementation manner of the third aspect, the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resource, including:

The state of the first field included in the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resource.

With reference to the third aspect, in a possible implementation manner of the third aspect, the first signaling is further used to indicate one or any combination of the following information:

The channel corresponding to the reserved resource;

With reference to the third aspect, in a possible implementation manner of the third aspect, the time domain information is further used to indicate:

With reference to the third aspect, in a possible implementation manner of the third aspect, the first signaling does not include scheduling information of service data.

With reference to the third aspect, in a possible implementation manner of the third aspect, the first signaling is also used to schedule second service data; the time domain information and/or the reserved resources Frequency domain information, including one of the following or any combination of the following:

With reference to the third aspect, in a possible implementation manner of the third aspect, the relative time domain position of the reserved resource is the same as the relative time domain position of the first resource, and the frequency domain position of the reserved resource The frequency domain position of the first resource is the same, and the reserved resource is the same size as the first resource; or, the relative time domain position of the reserved resource and the relative time domain of the first resource The position has a first deviation, and/or the frequency domain position of the reserved resource and the frequency domain position of the first resource have a second deviation; and, the reserved resource and the frequency domain position of the first resource The same size

With reference to the third aspect, in a possible implementation manner of the third aspect, the first signaling further carries third information, and the third information is the MCS of the first service data, or the third The information is the difference between the MCS of the second service data and the MCS of the first service data.

With reference to the third aspect, in a possible implementation manner of the third aspect, the first signaling further carries fourth information, and the fourth information is the scaling factor.

With reference to the third aspect, in a possible implementation manner of the third aspect, the second service data is sent through a second resource; the reserved resource is selected from the second resource, and the second resource The third position of is associated with the first position of the reserved resource, where the first position is the position of the reserved resource in the resource pool, and the third position is the second The location of the resource in the resource pool.

With reference to the third aspect, in a possible implementation manner of the third aspect, the time domain information is used to indicate the length of time occupied by the reserved resources, specifically:

With reference to the third aspect, in a possible implementation manner of the third aspect, the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource, specifically:

With reference to the third aspect, in a possible implementation manner of the third aspect, the first signaling is SCI, system message, RRC signaling, or MAC signaling.

Regarding the technical effects of the third aspect or various possible implementations of the third aspect, reference may be made to the introduction of the technical effects of the first aspect or the corresponding implementations of the first aspect.

In a fourth aspect, a fourth communication method is provided. The method includes: a second terminal device receives a first signaling from a first terminal device, and a parameter of the first signaling includes at least one of the following parameters: The resource of the first signaling, the size of the first signaling, or the RNTI used to scramble the CRC of the first signaling, and the parameter of the first signaling is used to indicate the time domain of the reserved resource Information and/or frequency domain information, the time domain information is used to indicate the length of time occupied by the reserved resource, and the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource; The second terminal device receives the first service data or control information from the first terminal device on the reserved resource.

With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the parameter of the first signaling is further used to indicate one of the following information or any combination thereof:

The channel corresponding to the reserved resource;

With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, in a possible implementation manner, the time domain information is further used to indicate:

With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the time domain information is further used to indicate:

With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the first signaling does not include service data scheduling information.

With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the first signaling is also used to schedule second service data; the time domain information and/or the reserved resource Frequency domain information, including one of the following or any combination of the following:

With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the relative time domain position of the reserved resource is the same as the relative time domain position of the first resource, and the frequency domain position of the reserved resource The frequency domain position of the first resource is the same, and the reserved resource has the same size as the first resource; or, the relative time domain position of the reserved resource and the relative time domain of the first resource The position has a first deviation, and/or the frequency domain position of the reserved resource and the frequency domain position of the first resource have a second deviation; and the reserved resource and the frequency domain position of the first resource The same size

With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the first signaling further carries third information, and the third information is the MCS of the first service data, or the third The information is the difference between the MCS of the second service data and the MCS of the first service data.

With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the first signaling further carries fourth information, and the fourth information is the scaling factor.

With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the second service data is sent through a second resource; the reserved resource is selected from the second resource, and the second resource The third position of is associated with the first position of the reserved resource, where the first position is the position of the reserved resource in the resource pool, and the third position is the second The location of the resource in the resource pool.

With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the time domain information is used to indicate the length of time occupied by the reserved resources, specifically:

With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource, specifically:

With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the first signaling is SCI, system message, RRC signaling, or MAC signaling.

Regarding the technical effects of the fourth aspect or various possible implementation manners of the fourth aspect, reference may be made to the introduction of the technical effects of the second aspect or the corresponding implementation manners of the second aspect.

In a fifth aspect, a fifth communication method is provided. The method includes: a first terminal device sends first service data in a first resource, where the first service data includes M data blocks; Positive responses for N of the M data blocks, or no negative responses for N of the M data blocks, M and N are both positive integers, and M is greater than or equal to N; The first terminal device releases a third resource, the third resource is a resource reserved for the N data blocks, and the third resource does not include the corresponding N data blocks in the first resource Resource section.

The method may be executed by a third communication device, and the third communication device may be a communication device or a communication device capable of supporting the communication device to implement the functions required by the method, such as a chip system. Exemplarily, the third communication device is a first terminal device. Exemplarily, the third terminal device is the first terminal device, or is a chip system set in the first terminal device for realizing the function of the first terminal device, or is used for realizing the function of the first terminal device Other parts.

In the embodiment of the present application, after the first terminal device sends the service data, if it receives an ACK, indicating that the sent service data has been successfully received by the receiver, it does not need to continue to send the service data through reserved resources, so the first The terminal equipment can release these reserved resources in time, thereby reducing the waste of resources. And these reserved resources can be continuously used by other terminal devices, which improves the effective utilization of resources.

With reference to the fifth aspect, in a possible implementation manner of the fifth aspect, the method further includes: the first terminal device sends MN data blocks on a second resource, and the MN data blocks are the The remaining data blocks of the M data blocks except the N data blocks, the second resource is a resource reserved for the MN data blocks, and the second resource does not include the M data blocks The corresponding resource part in the first resource.

With reference to the fifth aspect, in a possible implementation manner of the fifth aspect, the third resource has an association relationship with the N positive responses.

For example, the third resource has an association relationship with N ACKs, so after receiving N ACKs, the first terminal device can determine the corresponding third resource. After receiving N ACKs, the second terminal device may also determine the corresponding third resource.

With reference to the fifth aspect, in a possible implementation manner of the fifth aspect, the third resource has an association relationship with the N positive responses, including:

The third resource has an association relationship with a fourth resource used to carry the N acknowledgements.

For the second terminal device, the ACK is received through the fourth resource. After receiving N ACKs, the second terminal device can determine the corresponding third resource based on the fourth resource. This provides the second terminal device with a determination A way of three resources.

With reference to the fifth aspect, in a possible implementation manner of the fifth aspect, the method further includes: the first terminal device receiving M-N negative acknowledgments for the M-N data blocks.

The third terminal device may successfully receive M-N data blocks, so the third terminal device may send M-N NACKs to the first terminal device. In addition, the second terminal device may also receive M-N NACKs, so that the second terminal device may determine that the resources corresponding to the M-N data blocks cannot be used.

With reference to the fifth aspect, in a possible implementation manner of the fifth aspect, the first service data corresponds to one transmission block, the transmission block includes the M data blocks, and the M data blocks are M One code block or M code block group, and one positive response or negative response corresponds to one code block or code block group.

With reference to the fifth aspect, in a possible implementation manner of the fifth aspect, the first service data corresponds to M transmission blocks, and the M transmission blocks are the M data blocks, and an affirmative or negative The response corresponds to a transmission block.

The first service data may be only one transmission block, or may also be multiple transmission blocks, and there is no specific limitation.

In a sixth aspect, a sixth communication method is provided. The method includes: a second terminal device receives N acknowledgements from a third terminal device, the N acknowledgements corresponding to the first For the N data blocks in the first service data of the terminal device, N is a positive integer; the second terminal device determines that the third resource associated with the N positive responses is an available resource.

The method may be executed by a fourth communication device, which may be a communication device or a communication device capable of supporting the communication device to implement the functions required by the method, such as a chip system. Exemplarily, the fourth communication device is a second terminal device. Exemplarily, the fourth terminal device is the second terminal device, or is a chip system set in the second terminal device for realizing the function of the second terminal device, or is used for realizing the function of the second terminal device Other parts.

With reference to the sixth aspect, in a possible implementation manner of the sixth aspect, the third resource is a resource reserved for the N data blocks.

With reference to the sixth aspect, in a possible implementation manner of the sixth aspect, the method further includes:

The second terminal device occupies the third resource to send second service data.

With reference to the sixth aspect, in a possible implementation manner of the sixth aspect, the second terminal device determining that the third resource associated with the N positive responses is an available resource includes:

The second terminal device determines that the third resource having an association relationship with the fourth resources corresponding to the N acknowledgements is an available resource, and the fourth resource is a resource that carries the N acknowledgements.

With reference to the sixth aspect, in a possible implementation manner of the sixth aspect, the first service data corresponds to a transmission block, and the transmission block includes M code blocks or code block groups, and an affirmative response or a negative response Corresponding to one code block or code block group, the N data blocks are N code blocks included in the M code blocks, or the N data blocks are N codes included in the M code block groups Block group, M is greater than N.

With reference to the sixth aspect, in a possible implementation manner of the sixth aspect, the first service data corresponds to M transmission blocks, and the N data blocks are N transmission blocks included in the M transmission blocks , A positive response or negative response corresponds to a transmission block.

Regarding the technical effects of the sixth aspect or various possible implementation manners of the sixth aspect, reference may be made to the introduction of the technical effects of the fifth aspect or the corresponding implementation manners of the fifth aspect.

In a seventh aspect, a communication device is provided, for example, the communication device is the aforementioned first terminal device. The first terminal device is configured to execute the foregoing first aspect or the method in any possible implementation manner of the first aspect. Specifically, the first terminal device may include a module for executing the method in the first aspect or any possible implementation of the first aspect, for example, including a processing module and a transceiver module. Exemplarily, the first terminal device is a communication device. Exemplarily, the communication device is a first terminal device. The transceiver module is configured to send first signaling to at least one second terminal device, and the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resource, and Time domain information is used to indicate the length of time occupied by the reserved resource, and the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource;

The transceiver module is also configured to send first service data or control information on the reserved resources.

With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the processing module is configured to determine reserved resources.

With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resource, including: the first The state of the first field included in the signaling is used to indicate the time domain information and/or frequency domain information of the reserved resource.

With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the first signaling is further used to indicate one or any combination of the following information:

The channel corresponding to the reserved resource;

With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the time domain information is further used to indicate:

With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the first signaling does not include scheduling information of service data.

With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the first signaling is also used to schedule second service data; the time domain information and/or the reserved resources Frequency domain information, including one of the following or any combination of the following:

With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the relative time domain position of the reserved resource is the same as the relative time domain position of the first resource, and the frequency domain position of the reserved resource The frequency domain position of the first resource is the same, and the reserved resource is the same size as the first resource; or, the relative time domain position of the reserved resource and the relative time domain of the first resource The position has a first deviation, and/or the frequency domain position of the reserved resource and the frequency domain position of the first resource have a second deviation; and, the reserved resource and the frequency domain position of the first resource The same size

With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the first signaling further carries third information, and the third information is the MCS of the first service data, or the third The information is the difference between the MCS of the second service data and the MCS of the first service data.

With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the first signaling further carries fourth information, and the fourth information is the scaling factor.

With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the second service data is sent through a second resource; the reserved resource is selected from the second resource, and the second resource The third position of is associated with the first position of the reserved resource, where the first position is the position of the reserved resource in the resource pool, and the third position is the second The location of the resource in the resource pool.

With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the time domain information is used to indicate the length of time occupied by the reserved resources, specifically:

With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource, specifically:

With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the first signaling is SCI, system message, RRC signaling, or MAC signaling.

Regarding the technical effects of the seventh aspect or various possible implementation manners of the seventh aspect, reference may be made to the introduction of the technical effects of the first aspect or the corresponding implementation manners of the first aspect.

In an eighth aspect, a communication device is provided, for example, the communication device is the first terminal device as described above. The first terminal device is used to execute the foregoing second aspect or any possible implementation of the second aspect. Specifically, the first terminal device may include a module for executing the method in the second aspect or any possible implementation of the second aspect, for example, including a processing module and a transceiver module. Exemplarily, the first terminal device is a communication device. Exemplarily, the communication device is a first terminal device. Wherein, the processing module is configured to determine a parameter of the first signaling according to the reserved resources, and the parameter of the first signaling includes at least one of the following parameters: the resource carrying the first signaling, the The size of the first signaling, or the RNTI used to scramble the CRC of the first signaling;

The transceiver module is configured to send first signaling to at least one second terminal device, and a parameter of the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resource, and Time domain information is used to indicate the length of time occupied by the reserved resource, and the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource;

With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, the parameter of the first signaling is further used to indicate one of the following information or any combination thereof:

The channel corresponding to the reserved resource;

With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, in a possible implementation manner, the time domain information is further used to indicate:

With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, the time domain information is further used to indicate:

With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, the first signaling does not include scheduling information of service data.

With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, the first signaling is also used to schedule second service data; the time domain information and/or the reserved resources Frequency domain information, including one of the following or any combination of the following:

With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, the relative time domain position of the reserved resource is the same as the relative time domain position of the first resource, and the frequency domain position of the reserved resource The frequency domain position of the first resource is the same, and the reserved resource is the same size as the first resource; or, the relative time domain position of the reserved resource and the relative time domain of the first resource The position has a first deviation, and/or the frequency domain position of the reserved resource and the frequency domain position of the first resource have a second deviation; and, the reserved resource and the frequency domain position of the first resource The same size

With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, the first signaling further carries third information, and the third information is the MCS of the first service data, or the third The information is the difference between the MCS of the second service data and the MCS of the first service data.

With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, the first signaling further carries fourth information, and the fourth information is the scaling factor.

With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, the second service data is sent through a second resource; the reserved resource is selected from the second resource, and the second resource The third position of is associated with the first position of the reserved resource, where the first position is the position of the reserved resource in the resource pool, and the third position is the second The location of the resource in the resource pool.

With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, the time domain information is used to indicate the length of time occupied by the reserved resources, specifically:

With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource, specifically:

With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, the first signaling is SCI, system message, RRC signaling, or MAC signaling.

Regarding the technical effects of the eighth aspect or various possible implementation manners of the eighth aspect, reference may be made to the introduction of the technical effects of the second aspect or corresponding implementation manners of the second aspect.

In a ninth aspect, a communication device is provided, for example, the communication device is the aforementioned second terminal device. The first terminal device is configured to execute the foregoing third aspect or the method in any possible implementation manner of the third aspect. Specifically, the first terminal device may include a module for executing the third aspect or the method in any possible implementation manner of the third aspect, for example, including a processing module and a transceiver module. Exemplarily, the second terminal device is a communication device. Exemplarily, the communication device is a second terminal device. Wherein, the transceiver module is configured to receive first signaling from a first terminal device, and the first signaling is used to indicate time domain information and/or frequency domain information of reserved resources, and the time domain information Including the length of time occupied by the reserved resource, and the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource;

The transceiver module is further configured to receive first service data or control information from the first terminal device on the reserved resources.

With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the processing module is configured to determine the reserved resource according to the first signaling.

With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resource, including:

With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the first signaling is further used to indicate one or any combination of the following information:

The channel corresponding to the reserved resource;

With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the time domain information is further used to indicate:

With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the first signaling does not include service data scheduling information.

With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the first signaling is also used to schedule second service data; the time domain information and/or the reserved resource Frequency domain information, including one of the following or any combination of the following:

With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the relative time domain position of the reserved resource is the same as the relative time domain position of the first resource, and the frequency domain position of the reserved resource The frequency domain position of the first resource is the same, and the reserved resource is the same size as the first resource; or, the relative time domain position of the reserved resource and the relative time domain of the first resource The position has a first deviation, and/or the frequency domain position of the reserved resource and the frequency domain position of the first resource have a second deviation; and, the reserved resource and the frequency domain position of the first resource The same size

With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the first signaling further carries third information, and the third information is the MCS of the first service data, or the third The information is the difference between the MCS of the second service data and the MCS of the first service data.

With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the first signaling further carries fourth information, and the fourth information is the scaling factor.

With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the second service data is sent through a second resource; the reserved resource is selected from the second resource, and the second resource The third position of is associated with the first position of the reserved resource, where the first position is the position of the reserved resource in the resource pool, and the third position is the second The location of the resource in the resource pool.

With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the time domain information is used to indicate the length of time occupied by the reserved resources, specifically:

With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource, specifically:

With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the first signaling is SCI, system message, RRC signaling, or MAC signaling.

Regarding the technical effects of the ninth aspect or various possible implementations of the ninth aspect, reference may be made to the introduction of the third aspect or the technical effects of the corresponding implementations of the third aspect.

In a tenth aspect, a communication device is provided, for example, the communication device is the aforementioned second terminal device. The first terminal device is configured to execute the foregoing fourth aspect or the method in any possible implementation manner of the fourth aspect. Specifically, the first terminal device may include a module for executing the fourth aspect or the method in any possible implementation manner of the fourth aspect, for example, including a processing module and a transceiver module. Exemplarily, the second terminal device is a communication device. Exemplarily, the communication device is a second terminal device. Wherein, the transceiver module is configured to receive the first signaling from the first terminal device, and the parameters of the first signaling include at least one of the following parameters: a resource that carries the first signaling, and the first signaling The size of a signaling, or the RNTI used to scramble the CRC of the first signaling, and the parameters of the first signaling are used to indicate the time domain information and/or frequency domain information of the reserved resources, the Time domain information is used to indicate the length of time occupied by the reserved resource, and the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource;

With reference to the tenth aspect, in a possible implementation manner of the tenth aspect, the processing module is configured to determine the reserved resource according to a parameter of the first signaling.

With reference to the tenth aspect, in a possible implementation manner of the tenth aspect, the parameter of the first signaling is further used to indicate one of the following information or any combination thereof:

The channel corresponding to the reserved resource;

With reference to the tenth aspect, in a possible implementation manner of the tenth aspect, in a possible implementation manner, the time domain information is further used to indicate:

With reference to the tenth aspect, in a possible implementation manner of the tenth aspect, the time domain information is further used to indicate:

With reference to the tenth aspect, in a possible implementation manner of the tenth aspect, the first signaling does not include scheduling information of service data.

With reference to the tenth aspect, in a possible implementation manner of the tenth aspect, the first signaling is also used to schedule second service data; the time domain information and/or the reserved resources Frequency domain information, including one of the following or any combination of the following:

With reference to the tenth aspect, in a possible implementation manner of the tenth aspect, the relative time domain position of the reserved resource is the same as the relative time domain position of the first resource, and the frequency domain position of the reserved resource The frequency domain position of the first resource is the same, and the reserved resource is the same size as the first resource; or, the relative time domain position of the reserved resource and the relative time domain of the first resource The position has a first deviation, and/or the frequency domain position of the reserved resource and the frequency domain position of the first resource have a second deviation; and, the reserved resource and the frequency domain position of the first resource The same size

With reference to the tenth aspect, in a possible implementation manner of the tenth aspect, the first signaling further carries third information, and the third information is the MCS of the first service data, or the third The information is the difference between the MCS of the second service data and the MCS of the first service data.

With reference to the tenth aspect, in a possible implementation manner of the tenth aspect, the first signaling further carries fourth information, and the fourth information is the scaling factor.

With reference to the tenth aspect, in a possible implementation manner of the tenth aspect, the second service data is sent through a second resource; the reserved resource is selected from the second resource, and the second resource The third position of is associated with the first position of the reserved resource, where the first position is the position of the reserved resource in the resource pool, and the third position is the second The location of the resource in the resource pool.

With reference to the tenth aspect, in a possible implementation manner of the tenth aspect, the time domain information is used to indicate the length of time occupied by the reserved resources, specifically:

With reference to the tenth aspect, in a possible implementation manner of the tenth aspect, the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource, specifically:

With reference to the tenth aspect, in a possible implementation manner of the tenth aspect, the first signaling is SCI, system message, RRC signaling, or MAC signaling.

Regarding the technical effects of the tenth aspect or various possible implementation manners of the tenth aspect, reference may be made to the introduction of the technical effects of the fourth aspect or the corresponding implementation manners of the fourth aspect.

In an eleventh aspect, a communication device is provided, for example, the communication device is the first terminal device as described above. The first terminal device is used to execute the foregoing fifth aspect or any possible implementation method of the fifth aspect. Specifically, the first terminal device may include a module for executing the fifth aspect or the method in any possible implementation manner of the fifth aspect, for example, including a processing module and a transceiver module. Exemplarily, the first terminal device is a communication device. Exemplarily, the communication device is a first terminal device. Wherein, the transceiver module is configured to send first service data in a first resource, and the first service data includes M data blocks;

The transceiver module is further configured to receive an affirmative response for N of the M data blocks, or no negative response for N of the M data blocks, M and N All are positive integers, and M is greater than or equal to N;

The processing module is configured to release a third resource, where the third resource is a resource reserved for the N data blocks, and the third resource does not include the N data blocks in the first resource The corresponding resource part.

With reference to the eleventh aspect, in a possible implementation manner of the eleventh aspect, the transceiver module is further configured to send MN data blocks on the second resource, and the MN data blocks are the M In the data block, the remaining data blocks except for the N data blocks, the second resource is a resource reserved for the MN data blocks, and the second resource does not include the M data blocks in all the data blocks. The corresponding resource part in the first resource.

With reference to the eleventh aspect, in a possible implementation manner of the eleventh aspect, the third resource has an association relationship with the N positive responses.

With reference to the eleventh aspect, in a possible implementation manner of the eleventh aspect, the third resource has an association relationship with the N positive responses, including:

With reference to the eleventh aspect, in a possible implementation of the eleventh aspect, the transceiver module is further configured to receive M-N negative acknowledgments for the M-N data blocks.

With reference to the eleventh aspect, in a possible implementation manner of the eleventh aspect, the first service data corresponds to one transmission block, the transmission block includes the M data blocks, and the M data blocks There are M code blocks or M code block groups, and one positive response or negative response corresponds to one code block or code block group.

With reference to the eleventh aspect, in a possible implementation manner of the eleventh aspect, the first service data corresponds to M transmission blocks, the M transmission blocks are the M data blocks, and an acknowledgement Or a negative response corresponds to a transmission block.

Regarding the technical effects of the eleventh aspect or various possible implementations of the eleventh aspect, reference may be made to the introduction of the technical effects of the fifth aspect or the corresponding implementation manners of the fifth aspect.

In a twelfth aspect, a communication device is provided, for example, the communication device is the second terminal device as described above. The second terminal device is configured to execute the foregoing sixth aspect or the method in any possible implementation manner of the sixth aspect. Specifically, the first terminal device may include a module for executing the method in the sixth aspect or any possible implementation of the sixth aspect, for example, including a processing module and a transceiver module. Exemplarily, the second terminal device is a communication device. Exemplarily, the communication device is a second terminal device. Wherein, the transceiver module is configured to receive N positive responses from a third terminal device, and the N positive responses correspond to N in the first service data from the first terminal device received by the third terminal device. Data blocks, N is a positive integer;

The processing module is configured to determine that a third resource associated with the N positive responses is an available resource.

With reference to the twelfth aspect, in a possible implementation manner of the twelfth aspect, the third resource is a resource reserved for the N data blocks.

With reference to the twelfth aspect, in a possible implementation manner of the twelfth aspect, the processing module is further configured to occupy the third resource to send second service data.

With reference to the twelfth aspect, in a possible implementation manner of the twelfth aspect, the processing module is configured to determine that a third resource associated with the N positive responses is an available resource in the following manner:

It is determined that the third resource having an association relationship with the fourth resources corresponding to the N acknowledgements is an available resource, and the fourth resource is a resource that carries the N acknowledgements.

With reference to the twelfth aspect, in a possible implementation manner of the twelfth aspect, the first service data corresponds to a transmission block, and the transmission block includes M code blocks or code block groups, and an acknowledgement or The negative response corresponds to one code block or code block group, and the N data blocks are the N code blocks included in the M code blocks, or the N data blocks are N code block groups included in the M code block groups. A code block group, M is greater than N.

With reference to the twelfth aspect, in a possible implementation manner of the twelfth aspect, the first service data corresponds to M transmission blocks, and the N data blocks are N data included in the M transmission blocks Transmission block, one positive response or negative response corresponds to one transmission block.

Regarding the technical effects of the twelfth aspect or various possible implementations of the twelfth aspect, reference may be made to the introduction of the technical effects of the sixth aspect or the corresponding implementation manners of the sixth aspect.

In a thirteenth aspect, a communication device is provided. The communication device is, for example, the aforementioned first terminal device. The communication device includes a processor and a transceiver, and the processor and the transceiver are coupled with each other to implement the method described in the first aspect or various possible designs of the first aspect. Exemplarily, the communication device is a chip provided in a communication device. Exemplarily, the communication device is a first terminal device. Wherein, the transceiver is realized by, for example, an antenna, a feeder, a codec in the communication device, or, if the communication device is a chip set in the communication device, the transceiver is, for example, a communication interface in the chip. It is connected with the radio frequency transceiving component in the communication equipment to realize the transmission and reception of information through the radio frequency transceiving component. Wherein, the transceiver is configured to send first signaling to at least one second terminal device, and the first signaling is used to indicate time domain information and/or frequency domain information of reserved resources, and the time domain Information is used to indicate the length of time occupied by the reserved resource, and the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource;

The transceiver is also used to send first service data or control information on the reserved resources.

With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the processor is configured to determine reserved resources.

With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resource, including: The state of the first field included in the first signaling is used to indicate the time domain information and/or frequency domain information of the reserved resource.

With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the first signaling is further used to indicate one or any combination of the following information:

The channel corresponding to the reserved resource;

With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the time domain information is further used to indicate:

With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the first signaling does not include service data scheduling information.

With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the first signaling is also used to schedule second service data; the time domain information and/or the reserved resources The frequency domain information includes one of the following or any combination of the following multiple:

With reference to the thirteenth aspect, in a possible implementation of the thirteenth aspect, the relative time domain position of the reserved resource is the same as the relative time domain position of the first resource, and the frequency of the reserved resource The domain location is the same as the frequency domain location of the first resource, and the reserved resource is the same size as the first resource; or, the relative time domain location of the reserved resource is relative to the first resource The time domain position has a first deviation, and/or the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource; and, the reserved resource and the first The same size of resources;

With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the first signaling further carries third information, and the third information is the MCS of the first service data, or the The third information is the difference between the MCS of the second service data and the MCS of the first service data.

With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the first signaling further carries fourth information, and the fourth information is the scaling factor.

With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the second service data is sent through a second resource; the reserved resource is selected from the second resource, and the first 2. The third position of the resource is associated with the first position of the reserved resource, where the first position is the position of the reserved resource in the resource pool, and the third position is the The position of the second resource in the resource pool.

With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the time domain information is used to indicate the length of time occupied by the reserved resources, specifically:

With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource, specifically:

With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the first signaling is SCI, system message, RRC signaling, or MAC signaling.

Regarding the technical effects of the thirteenth aspect or various possible implementations of the thirteenth aspect, reference may be made to the introduction of the technical effects of the first aspect or the corresponding implementation manners of the first aspect.

In a fourteenth aspect, a communication device is provided. The communication device is, for example, the first terminal device described above. The communication device includes a processor and a transceiver, and the processor and the transceiver are coupled with each other to implement the method described in the foregoing second aspect or various possible designs of the second aspect. Exemplarily, the communication device is a chip provided in a communication device. Exemplarily, the communication device is a first terminal device. Wherein, the transceiver is realized by, for example, an antenna, a feeder, a codec in the communication device, or, if the communication device is a chip set in the communication device, the transceiver is, for example, a communication interface in the chip. It is connected with the radio frequency transceiving component in the communication equipment to realize the transmission and reception of information through the radio frequency transceiving component. Wherein, the processor is configured to determine a parameter of the first signaling according to reserved resources, and the parameter of the first signaling includes at least one of the following parameters: a resource that carries the first signaling, and The size of the first signaling, or the RNTI used to scramble the CRC of the first signaling;

The transceiver is configured to send first signaling to at least one second terminal device, and a parameter of the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resource, and Time domain information is used to indicate the length of time occupied by the reserved resource, and the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource;

With reference to the fourteenth aspect, in a possible implementation manner of the fourteenth aspect, the parameter of the first signaling is further used to indicate one of the following information or any combination thereof:

The channel corresponding to the reserved resource;

With reference to the fourteenth aspect, in a possible implementation manner of the fourteenth aspect, in a possible implementation manner, the time domain information is further used to indicate:

With reference to the fourteenth aspect, in a possible implementation manner of the fourteenth aspect, the time domain information is further used to indicate:

With reference to the fourteenth aspect, in a possible implementation manner of the fourteenth aspect, the first signaling does not include service data scheduling information.

With reference to the fourteenth aspect, in a possible implementation manner of the fourteenth aspect, the first signaling is also used to schedule second service data; the time domain information and/or the reserved resources The frequency domain information includes one of the following or any combination of the following multiple:

With reference to the fourteenth aspect, in a possible implementation manner of the fourteenth aspect, the relative time domain position of the reserved resource is the same as the relative time domain position of the first resource, and the frequency of the reserved resource The domain location is the same as the frequency domain location of the first resource, and the reserved resource is the same size as the first resource; or, the relative time domain location of the reserved resource is relative to the first resource The time domain position has a first deviation, and/or the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource; and, the reserved resource and the first The same size of resources;

With reference to the fourteenth aspect, in a possible implementation manner of the fourteenth aspect, the first signaling further carries third information, and the third information is the MCS of the first service data, or the The third information is the difference between the MCS of the second service data and the MCS of the first service data.

With reference to the fourteenth aspect, in a possible implementation manner of the fourteenth aspect, the first signaling further carries fourth information, and the fourth information is the scaling factor.

With reference to the fourteenth aspect, in a possible implementation manner of the fourteenth aspect, the second service data is sent through a second resource; the reserved resource is selected from the second resource, and the first 2. The third position of the resource is associated with the first position of the reserved resource, where the first position is the position of the reserved resource in the resource pool, and the third position is the The position of the second resource in the resource pool.

With reference to the fourteenth aspect, in a possible implementation manner of the fourteenth aspect, the time domain information is used to indicate the length of time occupied by the reserved resources, specifically:

With reference to the fourteenth aspect, in a possible implementation manner of the fourteenth aspect, the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource, specifically:

With reference to the fourteenth aspect, in a possible implementation manner of the fourteenth aspect, the first signaling is SCI, system message, RRC signaling, or MAC signaling.

Regarding the technical effects of the fourteenth aspect or various possible implementation manners of the fourteenth aspect, reference may be made to the introduction of the technical effects of the second aspect or the corresponding implementation manners of the second aspect.

In a fifteenth aspect, a communication device is provided. The communication device is, for example, the aforementioned second terminal device. The communication device includes a processor and a transceiver, and the processor and the transceiver are coupled with each other to implement the methods described in the foregoing third aspect or various possible designs of the third aspect. Exemplarily, the communication device is a chip provided in a communication device. Exemplarily, the communication device is a second terminal device. Wherein, the transceiver is realized by, for example, an antenna, a feeder, a codec in the communication device, or, if the communication device is a chip set in the communication device, the transceiver is, for example, a communication interface in the chip. It is connected with the radio frequency transceiving component in the communication equipment to realize the transmission and reception of information through the radio frequency transceiving component. Wherein, the transceiver is configured to receive first signaling from a first terminal device, and the first signaling is used to indicate time domain information and/or frequency domain information of reserved resources, and the time domain information Including the length of time occupied by the reserved resource, and the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource;

The transceiver is further configured to receive first service data or control information from the first terminal device on the reserved resources.

With reference to the fifteenth aspect, in a possible implementation manner of the fifteenth aspect, the processor is configured to determine the reserved resource according to the first signaling.

With reference to the fifteenth aspect, in a possible implementation manner of the fifteenth aspect, the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resource, including:

With reference to the fifteenth aspect, in a possible implementation manner of the fifteenth aspect, the first signaling is further used to indicate one or any combination of the following information:

The channel corresponding to the reserved resource;

With reference to the fifteenth aspect, in a possible implementation manner of the fifteenth aspect, the time domain information is further used to indicate:

With reference to the fifteenth aspect, in a possible implementation manner of the fifteenth aspect, the first signaling does not include scheduling information of service data.

With reference to the fifteenth aspect, in a possible implementation manner of the fifteenth aspect, the first signaling is also used to schedule second service data; the time domain information and/or the reserved resources The frequency domain information includes one of the following or any combination of the following multiple:

With reference to the fifteenth aspect, in a possible implementation manner of the fifteenth aspect, the relative time domain position of the reserved resource is the same as the relative time domain position of the first resource, and the frequency of the reserved resource The domain location is the same as the frequency domain location of the first resource, and the reserved resource is the same size as the first resource; or, the relative time domain location of the reserved resource is relative to the first resource The time domain position has a first deviation, and/or the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource; and, the reserved resource and the first The same size of resources;

With reference to the fifteenth aspect, in a possible implementation manner of the fifteenth aspect, the first signaling further carries third information, and the third information is the MCS of the first service data, or the The third information is the difference between the MCS of the second service data and the MCS of the first service data.

With reference to the fifteenth aspect, in a possible implementation manner of the fifteenth aspect, the first signaling further carries fourth information, and the fourth information is the scaling factor.

With reference to the fifteenth aspect, in a possible implementation manner of the fifteenth aspect, the second service data is sent through a second resource; the reserved resource is selected from the second resource, and the first 2. The third position of the resource is associated with the first position of the reserved resource, where the first position is the position of the reserved resource in the resource pool, and the third position is the The position of the second resource in the resource pool.

With reference to the fifteenth aspect, in a possible implementation manner of the fifteenth aspect, the time domain information is used to indicate the length of time occupied by the reserved resources, specifically:

With reference to the fifteenth aspect, in a possible implementation manner of the fifteenth aspect, the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource, specifically:

With reference to the fifteenth aspect, in a possible implementation manner of the fifteenth aspect, the first signaling is SCI, system message, RRC signaling, or MAC signaling.

Regarding the technical effects of the fifteenth aspect or various possible implementation manners of the fifteenth aspect, reference may be made to the introduction of the technical effects of the third aspect or the corresponding implementation manners of the third aspect.

In a sixteenth aspect, a communication device is provided. The communication device is, for example, the aforementioned second terminal device. The communication device includes a processor and a transceiver, and the processor and the transceiver are coupled with each other to implement the methods described in the foregoing fourth aspect or various possible designs of the fourth aspect. Exemplarily, the communication device is a chip provided in a communication device. Exemplarily, the communication device is a second terminal device. Wherein, the transceiver is realized by, for example, an antenna, a feeder, a codec in the communication device, or, if the communication device is a chip set in the communication device, the transceiver is, for example, a communication interface in the chip. It is connected with the radio frequency transceiving component in the communication equipment to realize the transmission and reception of information through the radio frequency transceiving component. Wherein, the transceiver is configured to receive the first signaling from the first terminal device, and the parameters of the first signaling include at least one of the following parameters: a resource that carries the first signaling, and the first signaling The size of a signaling, or the RNTI used to scramble the CRC of the first signaling, the parameters of the first signaling are used to indicate the time domain information and/or frequency domain information of the reserved resources, the Time domain information is used to indicate the length of time occupied by the reserved resource, and the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource;

With reference to the sixteenth aspect, in a possible implementation manner of the sixteenth aspect, the processor is configured to determine the reserved resource according to a parameter of the first signaling.

With reference to the sixteenth aspect, in a possible implementation manner of the sixteenth aspect, the parameter of the first signaling is further used to indicate one of the following information or any combination thereof:

The channel corresponding to the reserved resource;

With reference to the sixteenth aspect, in a possible implementation manner of the sixteenth aspect, in a possible implementation manner, the time domain information is further used to indicate:

With reference to the sixteenth aspect, in a possible implementation manner of the sixteenth aspect, the time domain information is further used to indicate:

With reference to the sixteenth aspect, in a possible implementation manner of the sixteenth aspect, the first signaling does not include scheduling information of service data.

With reference to the sixteenth aspect, in a possible implementation manner of the sixteenth aspect, the first signaling is also used to schedule second service data; the time domain information and/or the reserved resources The frequency domain information includes one of the following or any combination of the following multiple:

With reference to the sixteenth aspect, in a possible implementation manner of the sixteenth aspect, the relative time domain position of the reserved resource is the same as the relative time domain position of the first resource, and the frequency of the reserved resource The domain location is the same as the frequency domain location of the first resource, and the reserved resource is the same size as the first resource; or, the relative time domain location of the reserved resource is relative to the first resource The time domain position has a first deviation, and/or the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource; and, the reserved resource and the first The same size of resources;

With reference to the sixteenth aspect, in a possible implementation manner of the sixteenth aspect, the first signaling further carries third information, and the third information is the MCS of the first service data, or the The third information is the difference between the MCS of the second service data and the MCS of the first service data.

With reference to the sixteenth aspect, in a possible implementation manner of the sixteenth aspect, the first signaling further carries fourth information, and the fourth information is the scaling factor.

With reference to the sixteenth aspect, in a possible implementation manner of the sixteenth aspect, the second service data is sent through a second resource; the reserved resource is selected from the second resource, and the first 2. The third position of the resource is associated with the first position of the reserved resource, where the first position is the position of the reserved resource in the resource pool, and the third position is the The position of the second resource in the resource pool.

With reference to the sixteenth aspect, in a possible implementation manner of the sixteenth aspect, the time domain information is used to indicate the length of time occupied by the reserved resources, specifically:

With reference to the sixteenth aspect, in a possible implementation manner of the sixteenth aspect, the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource, specifically:

With reference to the sixteenth aspect, in a possible implementation manner of the sixteenth aspect, the first signaling is SCI, system message, RRC signaling, or MAC signaling.

Regarding the technical effects of the sixteenth aspect or various possible implementation manners of the sixteenth aspect, reference may be made to the introduction of the technical effects of the fourth aspect or the corresponding implementation manners of the fourth aspect.

In a seventeenth aspect, a communication device is provided. The communication device is, for example, the aforementioned first terminal device. The communication device includes a processor and a transceiver, and the processor and the transceiver are coupled with each other to implement the methods described in the fifth aspect or various possible designs of the fifth aspect. Exemplarily, the communication device is a chip provided in a communication device. Exemplarily, the communication device is a first terminal device. Wherein, the transceiver is realized by, for example, an antenna, a feeder, a codec in the communication device, or, if the communication device is a chip set in the communication device, the transceiver is, for example, a communication interface in the chip. It is connected with the radio frequency transceiving component in the communication equipment to realize the transmission and reception of information through the radio frequency transceiving component. Wherein, the transceiver is configured to send first service data in a first resource, and the first service data includes M data blocks;

The transceiver is further configured to receive an affirmative response to N data blocks of the M data blocks, or no negative response to N data blocks of the M data blocks, M and N All are positive integers, and M is greater than or equal to N;

The processor is configured to release a third resource, where the third resource is a resource reserved for the N data blocks, and the third resource does not include the N data blocks in the first resource The corresponding resource part.

With reference to the seventeenth aspect, in a possible implementation manner of the seventeenth aspect, the transceiver is further configured to send MN data blocks on the second resource, and the MN data blocks are the M In the data block, the remaining data blocks except for the N data blocks, the second resource is a resource reserved for the MN data blocks, and the second resource does not include the M data blocks in all the data blocks. The corresponding resource part in the first resource.

With reference to the seventeenth aspect, in a possible implementation manner of the seventeenth aspect, the third resource has an association relationship with the N positive responses.

With reference to the seventeenth aspect, in a possible implementation manner of the seventeenth aspect, the third resource has an association relationship with the N positive responses, including:

With reference to the seventeenth aspect, in a possible implementation manner of the seventeenth aspect, the transceiver is further configured to receive M-N negative replies for the M-N data blocks.

With reference to the seventeenth aspect, in a possible implementation manner of the seventeenth aspect, the first service data corresponds to one transmission block, the transmission block includes the M data blocks, and the M data blocks There are M code blocks or M code block groups, and one positive response or negative response corresponds to one code block or code block group.

With reference to the seventeenth aspect, in a possible implementation manner of the seventeenth aspect, the first service data corresponds to M transmission blocks, the M transmission blocks are the M data blocks, and an acknowledgement Or a negative response corresponds to a transmission block.

Regarding the technical effects of the seventeenth aspect or various possible implementation manners of the seventeenth aspect, reference may be made to the introduction of the technical effects of the fifth aspect or the corresponding implementation manners of the fifth aspect.

In an eighteenth aspect, a communication device is provided. The communication device is, for example, the second terminal device as described above. The communication device includes a processor and a transceiver, and the processor and the transceiver are coupled with each other to implement the methods described in the sixth aspect or various possible designs of the sixth aspect. Exemplarily, the communication device is a chip provided in a communication device. Exemplarily, the communication device is a second terminal device. Wherein, the transceiver is realized by, for example, an antenna, a feeder, a codec in the communication device, or, if the communication device is a chip set in the communication device, the transceiver is, for example, a communication interface in the chip. It is connected with the radio frequency transceiving component in the communication equipment to realize the transmission and reception of information through the radio frequency transceiving component. Wherein, the transceiver is configured to receive N positive responses from a third terminal device, and the N positive responses correspond to N in the first service data from the first terminal device received by the third terminal device. Data blocks, N is a positive integer;

The processor is configured to determine that a third resource associated with the N positive responses is an available resource.

With reference to the eighteenth aspect, in a possible implementation manner of the eighteenth aspect, the third resource is a resource reserved for the N data blocks.

With reference to the eighteenth aspect, in a possible implementation manner of the eighteenth aspect, the processor is further configured to occupy the third resource to send second service data.

With reference to the eighteenth aspect, in a possible implementation manner of the eighteenth aspect, the processor is configured to determine that the third resource associated with the N positive responses is an available resource by the following method:

With reference to the eighteenth aspect, in a possible implementation manner of the eighteenth aspect, the first service data corresponds to a transmission block, and the transmission block includes M code blocks or code block groups, and an acknowledgement or The negative response corresponds to one code block or code block group, and the N data blocks are the N code blocks included in the M code blocks, or the N data blocks are N code block groups included in the M code block groups. A code block group, M is greater than N.

With reference to the eighteenth aspect, in a possible implementation manner of the eighteenth aspect, the first service data corresponds to M transmission blocks, and the N data blocks are N data included in the M transmission blocks. Transmission block, one positive response or negative response corresponds to one transmission block.

Regarding the technical effects of the eighteenth aspect or various possible implementation manners of the eighteenth aspect, reference may be made to the introduction of the technical effects of the sixth aspect or the corresponding implementation manners of the sixth aspect.

In a nineteenth aspect, a communication device is provided. The communication device may be the first terminal device in the above method design. Exemplarily, the communication device is a chip provided in a communication device. Exemplarily, the communication device is a first terminal device. The communication device includes: a memory for storing computer executable program codes; and a processor, which is coupled with the memory. The program code stored in the memory includes instructions, and when the processor executes the instructions, the communication device is caused to execute the foregoing first aspect or the method in any one of the possible implementation manners of the first aspect.

Wherein, the communication device may also include a communication interface, and the communication interface may be a transceiver in the first terminal device, for example, implemented by an antenna, a feeder, and a codec in the communication device, or if the communication device To be a chip set in the first terminal device, the communication interface may be an input/output interface of the chip, such as input/output pins.

In a twentieth aspect, a communication device is provided. The communication device may be the first terminal device in the above method design. Exemplarily, the communication device is a chip provided in a communication device. Exemplarily, the communication device is a first terminal device. The communication device includes: a memory for storing computer executable program codes; and a processor, which is coupled with the memory. The program code stored in the memory includes instructions, and when the processor executes the instructions, the communication device is caused to execute the foregoing second aspect or the method in any one of the possible implementation manners of the second aspect.

In a twenty-first aspect, a communication device is provided. The communication device may be the second terminal device in the above method design. Exemplarily, the communication device is a chip provided in a communication device. Exemplarily, the communication device is a first terminal device. The communication device includes: a memory for storing computer executable program codes; and a processor, which is coupled with the memory. The program code stored in the memory includes instructions, and when the processor executes the instructions, the communication device is caused to execute the foregoing third aspect or the method in any one of the possible implementation manners of the third aspect.

Wherein, the communication device may also include a communication interface, and the communication interface may be a transceiver in the second terminal device, for example, implemented by an antenna, a feeder, and a codec in the communication device, or if the communication device To be a chip set in the second terminal device, the communication interface may be an input/output interface of the chip, such as input/output pins.

In a twenty-second aspect, a communication device is provided. The communication device may be the second terminal device in the above method design. Exemplarily, the communication device is a chip provided in a communication device. Exemplarily, the communication device is a first terminal device. The communication device includes: a memory for storing computer executable program codes; and a processor, which is coupled with the memory. The program code stored in the memory includes instructions, and when the processor executes the instructions, the communication device is caused to execute the foregoing fourth aspect or any one of the possible implementation methods of the fourth aspect.

In a twenty-third aspect, a communication device is provided. The communication device may be the first terminal device in the above method design. Exemplarily, the communication device is a chip provided in a communication device. Exemplarily, the communication device is a first terminal device. The communication device includes: a memory for storing computer executable program codes; and a processor, which is coupled with the memory. The program code stored in the memory includes instructions, and when the processor executes the instructions, the communication device is caused to execute the foregoing fifth aspect or the method in any one of the possible implementation manners of the fifth aspect.

In a twenty-fourth aspect, a communication device is provided. The communication device may be the second terminal device in the above method design. Exemplarily, the communication device is a chip provided in a communication device. Exemplarily, the communication device is a second terminal device. The communication device includes: a memory for storing computer executable program codes; and a processor, which is coupled with the memory. The program code stored in the memory includes instructions, and when the processor executes the instructions, the communication device is caused to execute the method in the sixth aspect or any one of the possible implementation manners of the sixth aspect.

In a twenty-fifth aspect, a first communication system is provided, which includes the communication device according to the seventh aspect, the communication device according to the thirteenth aspect, or the communication device according to the nineteenth aspect, and the communication device including the ninth aspect The communication device according to aspect, the communication device according to the fifteenth aspect, or the communication device according to the twenty-first aspect.

According to a twenty-sixth aspect, a communication system is provided, which includes the communication device according to the eighth aspect, the communication device according to the fourteenth aspect, or the communication device according to the twentieth aspect, and includes the tenth aspect The communication device, the communication device according to the sixteenth aspect, or the communication device according to the 22nd aspect.

The communication system described in the twenty-fifth aspect and the communication system described in the twenty-sixth aspect may be the same communication system, or may be different communication systems.

In a twenty-seventh aspect, a communication system is provided, which includes the communication device according to the eleventh aspect, the communication device according to the seventeenth aspect, or the communication device according to the twenty-third aspect, and The communication device according to the twelfth aspect, the communication device according to the eighteenth aspect, or the communication device according to the twenty-fourth aspect.

In a twenty-eighth aspect, a computer storage medium is provided. The computer-readable storage medium stores instructions that, when run on a computer, cause the computer to execute the first aspect or any one of the possibilities of the first aspect. The method described in the design.

In a twenty-ninth aspect, a computer storage medium is provided. The computer-readable storage medium stores instructions that, when run on a computer, cause the computer to execute the second aspect or any one of the possibilities of the second aspect. The method described in the design.

In a thirtieth aspect, a computer storage medium is provided. The computer-readable storage medium stores instructions that, when run on a computer, cause the computer to execute the third aspect or any one of the possible designs of the third aspect. The method described in.

In a thirty-first aspect, a computer storage medium is provided. The computer-readable storage medium stores instructions that, when run on a computer, cause the computer to execute any one of the above-mentioned fourth aspect or the fourth aspect. The method described in the design.

In a thirty-second aspect, a computer storage medium is provided. The computer-readable storage medium stores instructions that, when run on a computer, cause the computer to execute any one of the above-mentioned fifth aspect or the fifth aspect. The method described in the design.

In a thirty-third aspect, a computer storage medium is provided. The computer-readable storage medium stores instructions that, when run on a computer, cause the computer to execute any one of the aforementioned sixth aspect or the sixth aspect. The method described in the design.

In a thirty-seventh aspect, a computer program product containing instructions is provided. The computer program product stores instructions that, when run on a computer, enable the computer to execute the first aspect or any one of the first aspects. The method described in the design.

In a thirty-eighth aspect, a computer program product containing instructions is provided. The computer program product stores instructions that, when run on a computer, cause the computer to execute any one of the second aspect or the second aspect described above. The method described in the design.

In a thirty-ninth aspect, a computer program product containing instructions is provided. The computer program product stores instructions that, when run on a computer, cause the computer to execute the third aspect or any one of the third aspects mentioned above. The method described in the design.

In a fortieth aspect, a computer program product containing instructions is provided. The computer program product stores instructions that, when run on a computer, cause the computer to execute any one of the foregoing fourth aspect or the fourth aspect. The method described in the design.

In a forty-first aspect, a computer program product containing instructions is provided. The computer program product stores instructions that, when run on a computer, enable the computer to execute any one of the fifth aspect or the fifth aspect above. The method described in the design.

In a forty-second aspect, a computer program product containing instructions is provided. The computer program product stores instructions that, when run on a computer, enable the computer to execute any one of the sixth aspect or the sixth aspect. The method described in the design.

Through the method provided by the embodiments of this application, if other information is currently scheduled, the reserved resources may be the same as the period or size of the resources occupied by the currently scheduled information, or may not be the same, as long as the first message is passed. With the information indicating the reserved resources, the second terminal device can learn the location of the reserved resources, thereby improving the flexibility of resource reservation.

Description of the drawings

Figure 1 is a schematic diagram of comparison of symbol lengths under three subcarrier spacings;

Figure 2 is a schematic diagram of several D2D coverage scenarios;

FIG. 3 is a schematic diagram of mode1 in the D2D communication process;

Figure 4 is a schematic diagram of several scenarios of V2X;

Fig. 5 is a schematic diagram of a way for the signal sending end to send SA and data in LTE V2X;

Fig. 6 is a schematic diagram of another way for the signal sending end to send SA and data in LTE V2X;

7A to 7E are schematic diagrams of several multiplexing modes of control information and data in V2X;

Figure 8 is a schematic diagram of a detection window and a selection window corresponding to a terminal device;

FIG. 9 is a schematic diagram of an application scenario of an embodiment of the application;

FIG. 10 is a flowchart of the first communication method provided by an embodiment of this application;

FIG. 11 is an example of indicating information of at least one first resource through first signaling in an embodiment of this application;

FIG. 12A is a first example of an association between reserved resources and a first resource in an embodiment of this application;

FIG. 12B is a second example of the association between the reserved resource and the first resource in the embodiment of this application;

FIG. 12C is a third example of the association between the reserved resource and the first resource in the embodiment of this application;

FIG. 12D is a fourth example of the association between the reserved resource and the first resource in the embodiment of this application;

FIG. 12E is a fifth example of the association between the reserved resource and the first resource in the embodiment of this application;

FIG. 13 is another example of indicating information of at least one first resource through first signaling in an embodiment of this application;

FIG. 14 is a flowchart of a second communication method provided by an embodiment of this application;

15 is a schematic diagram of resources reserved for service data in an embodiment of the application;

FIG. 16 is a schematic block diagram of a first terminal device provided by an embodiment of this application;

FIG. 17 is another schematic block diagram of the first terminal device according to an embodiment of this application;

FIG. 18 is a schematic block diagram of a second terminal device provided by an embodiment of this application;

FIG. 19 is another schematic block diagram of a second type of terminal device provided by an embodiment of this application;

20 is a schematic block diagram of a third terminal device provided by an embodiment of the application;

FIG. 21 is another schematic block diagram of a third terminal device provided by an embodiment of this application;

FIG. 22 is a schematic block diagram of a fourth terminal device according to an embodiment of this application;

FIG. 23 is another schematic block diagram of a fourth terminal device provided by an embodiment of this application;

FIG. 24 is a schematic block diagram of a communication device provided by an embodiment of this application;

FIG. 25 is another schematic block diagram of a communication device according to an embodiment of the application;

FIG. 26 is still another schematic block diagram of the communication device provided by an embodiment of the application.

Detailed ways

In order to make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

Hereinafter, some terms in the embodiments of the present application will be explained to facilitate the understanding of those skilled in the art.

1) Terminal devices, including devices that provide users with voice and/or data connectivity, such as handheld devices with wireless connection functions, or processing devices connected to wireless modems. The terminal device can communicate with the core network via a radio access network (RAN), and exchange voice and/or data with the RAN. The terminal equipment may include user equipment (UE), wireless terminal equipment, mobile terminal equipment, device-to-device communication (device-to-device, D2D) terminal equipment, V2X terminal equipment, machine-to-machine/machine-type communication ( machine-to-machine/machine-type communications, M2M/MTC) terminal equipment, Internet of things (IoT) terminal equipment, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station) , Remote station (remote station), access point (access point, AP), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), or user equipment (user device) etc. For example, it may include mobile phones (or "cellular" phones), computers with mobile terminal equipment, portable, pocket-sized, handheld, and mobile devices with built-in computers. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (personal digital assistants, etc.) PDA), and other equipment. It also includes restricted devices, such as devices with low power consumption, or devices with limited storage capabilities, or devices with limited computing capabilities. Examples include barcodes, radio frequency identification (RFID), sensors, global positioning system (GPS), laser scanners and other information sensing equipment.

As an example and not a limitation, in the embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices or smart wearable devices, etc. It is a general term for using wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes Wait. A wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones. Use, such as various smart bracelets, smart helmets, smart jewelry, etc. for physical sign monitoring.

The various terminal devices described above, if they are located on the vehicle (for example, placed in the vehicle or installed in the vehicle), can be considered as vehicle-mounted terminal equipment, for example, the vehicle-mounted terminal equipment is also called on-board unit (OBU). ). The terminal device of the embodiment of the present application may also be an on-board module, on-board module, on-board component, on-board chip, or on-board unit that is built into a vehicle as one or more components or units. Groups, on-board components, on-board chips, or on-board units can implement the method of the present application.

2) Network equipment, such as access network (AN) equipment, such as a base station (e.g., access point), may refer to equipment that communicates with wireless terminal equipment through one or more cells on the air interface in the access network Or, for example, a network device in a V2X technology is a roadside unit (RSU). The base station can be used to convert the received air frame and Internet Protocol (IP) packets to each other, as a router between the terminal device and the rest of the access network, where the rest of the access network may include an IP network. The RSU can be a fixed infrastructure entity that supports V2X applications, and can exchange messages with other entities that support V2X applications. The network equipment can also coordinate the attribute management of the air interface. For example, the network equipment may include the evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in the LTE system or the long term evolution-advanced (LTE-A), or may also include the 5G NR system The next generation node B (gNB) may also include the centralized unit (CU) and distributed unit (CU) in the cloud radio access network (Cloud RAN) system. DU), the embodiment of this application is not limited.

3) 5G, the fifth-generation mobile communication technology, 5G needs to have higher performance than 4G. 5G NR Rel-15 defines a new air interface access technology to support a user experience rate of 0.1 to 1Gbps, a connection density of one million per square kilometer, millisecond end-to-end delay, and tens of Tbps per square kilometer The traffic density is more than 500Km per hour and the peak rate of tens of Gbps. Among them, user experience rate, connection density and delay are the three most basic performance indicators of 5G. At the same time, 5G also needs to greatly improve the efficiency of network deployment and operation. Compared with 4G, the spectrum efficiency is improved by 5 to 15 times, and the energy efficiency and cost efficiency are improved by more than a hundred times.

The three major application scenarios and requirements of 5G include:

Enhanced mobile broadband (enhanced mobile broadband, eMBB);

Massive machine-type communications (mMTC);

Ultra-reliable and low-latency communications (URLLC).

Among them, the scenarios corresponding to URLLC include unmanned driving or industrial control, etc., which require low latency and high reliability. The specific requirement for low latency is end-to-end 0.5ms latency, air interface information exchange back and forth 1ms latency, and the specific requirement for high reliability is that the block error rate (BLER) reaches 10 ^-5 , that is, the data packet is correct The receiving ratio reaches 99.999%.

In the NR system, a variety of sub-carrier intervals are introduced, and different carriers or different parts of bandwidth (BWP) in a carrier can have different sub-carrier intervals. The baseline is 15kHz, the subcarrier spacing of each carrier can be 15kHz*2^n, n is an integer, from 3.75kHz, 7.5kHz to 480kHz, up to 8 types, of course, there are other possibilities in the future. Corresponding to different sub-carrier intervals, there are also different symbol lengths and time slot lengths. Refer to Figure 1 for a comparison of the symbol lengths under three subcarrier intervals, where f0, f1 and f2 represent the three subcarrier intervals. For example, f1 is twice that of f0, then the length of the symbol under f0 is f1. For example, f2 is twice the length of f1. Similarly, the length of the symbol under f1 is twice the length of the symbol under f2.

In the time domain, in an NR system, a time slot can be composed of at least one of downlink transmission, guard period (GP), and uplink transmission. Such a time slot structure is called a different time slot format indicator (SFI). Currently, there may be at most 256 time slot structures. Of course, the possibility of other time slot structures is not ruled out in the future.

In the frequency domain, since the single-carrier bandwidth of the NR system can reach 400MHz, the bandwidth part (BWP) is defined in a carrier. The base station can configure multiple terminal devices through radio resource control (RRC). A downlink (DL) BWP/uplink (UL) BWP, and a DL BWP and a UL BWP configured for the terminal device to be activated through the downlink control information (DCI), so in a carrier, the base station Multiple DL BWP/UL BWP can be configured for the terminal device, but at a time, there is only one activated DL BWP and one activated UL BWP. When the activated BWP needs to be switched, the base station switches the activated BWP from BWP1 to BWP2 through DCI. At present, it is believed that the DCI used for scheduling downlink can only indicate to switch the activated DL BWP. After receiving the DCI used for scheduling downlink, the terminal device switches to the new DL BWP to receive the physical downlink shared channel (PDSCH) ; The signaling used to schedule the uplink can only indicate to switch the activated UL BWP. After receiving the signaling used to schedule the uplink, the terminal device switches to the new UL BWP to send the physical uplink shared channel (PUSCH) .

The base station gNB in the NR system can share the frequency spectrum with the base station eNB in the LTE system. For example, on an uplink carrier, the base station gNB of the NR system can coexist with the base station eNB of the LTE system to form a co-frequency networking.

From the perspective of terminal devices, the terminal devices in the 5G system can support dual connectivity, that is, one terminal device can be connected to two base stations. Among them, when the terminal device is connected to the LTE base station and the NR base station at the same time, if the LTE base station is used as the primary base station and the NR base station is used as the secondary base station, the scenario is specifically called LTE-NR dual connectivity (EN-DC); and If the NR base station serves as the primary base station and the LTE base station serves as the secondary base station, this scenario is specifically called NR-LTE dual connectivity (NE-DC).

4) Device-to-device (D2D), in order to improve spectrum utilization and maximize the use of the radio frequency capabilities of existing terminal equipment, D2D communication link (also known as sidelink) considers reusing existing Spectrum resources of mobile communication networks. In order not to interfere with the terminal equipment of the existing network, D2D communication does not use the LTE-A downlink (downlink) link spectrum resources, but only reuses the LTE-A system uplink (uplink) link spectrum resources, because, The anti-interference ability of the base station is stronger than that of the terminal equipment. The D2D device is more likely to perform time division multiplexing on the uplink spectrum resources, so that it does not need to support simultaneous transmission and reception, and only needs to transmit or receive at a time. Among them, the downlink of LTE-A is the link from the eNB to the terminal equipment, and the uplink of LTE-A is the link from the terminal equipment to the eNB.

In Release-12/13, D2D scenarios can be divided into three types: with network coverage, partial network coverage, and no network coverage. As shown in Figure 2, the terminal device in Figure 2 is a UE as an example. In a network coverage scenario, the D2D device is within the coverage of the base station. For example, UE1 in Figure 2 is a UE with network coverage. In some network coverage scenarios, some D2D devices are within the coverage of the base station. For example, UE2 in Figure 2 is There are UEs with partial network coverage, and other D2D devices are not covered by the base station. For example, UE3, UE4, and UE5 in FIG. 2 are UEs without network coverage. Among them, if the terminal device can receive the signal from the network device, then the terminal device is a terminal device with network coverage; if the terminal device can receive the signal from the terminal device with network coverage, then the terminal device is part of the network coverage If the terminal device cannot receive the signal sent by the base station and the signal sent by the terminal device with network coverage, then the network device is a terminal device without network coverage.

The D2D communication process can be divided into two processes: the D2D device discovery process and the D2D device communication process. During the D2D device discovery process, the D2D device only sends the discovery signal, generally through the physical sidelink discovery channel (PSDCH) Send. After receiving the discovery signal, other D2D devices can shake hands with the D2D device that sent the discovery signal. In the communication process of D2D devices, D2D devices can send control signaling and data, such as scheduling assignment (scheduling assignment, SA). SA has different sidelink control information (SCI) formats to control Signaling is generally sent via PSCCH, and data is generally sent via PSSCH. It can be understood that the downlink control information can be called SA or SCI. Relative to the uplink (UL) and downlink (DL) in LTE, the link of D2D communication can be called a sidelink.

From the perspective of the signal sending end, there are currently two modes of resource allocation in the communication process of D2D devices. Mode 1 (mode1) is a centralized control method. D2D resources are allocated by a central control device (such as a base station or a relay station, etc.). The resources are allocated to the terminal device as a signal sending end through scheduling. The allocation method is mainly aimed at scenarios with network coverage. Mode 2 (mode 2) is a competition-based distributed resource multiplexing method. The terminal device as the signal sending end obtains transmission resources from the resource pool through competition. In a scenario with network coverage, the resource pool is a block of resources configured by the base station, and D2D devices compete for small blocks of resources in this block of resources. In a scenario where there is no network coverage, the resource pool is a predefined system resource that the D2D device can obtain, and the D2D device competes for resources under the predefined system resource.

Similar to the D2D device communication process, there are two types of resource allocation in the D2D device discovery process. Type 1 (type 1) is a competition-based distributed resource multiplexing method. The terminal device as the signal sending end obtains transmission resources from the resource pool through competition. In a scenario with network coverage, the resource pool is a block of resources configured by the base station, and D2D devices compete for small blocks of resources in this block of resources. In a scenario where there is no network coverage, the resource pool is a predefined system resource that the D2D device can obtain, and the D2D device competes for resources under the predefined system resource. Type 2 (type 2) is a centralized control method. D2D resources are allocated by a central control device (such as a base station or relay station, etc.). The resources are allocated to the terminal device as a signal sending end through scheduling. Centralized control resource allocation Mainly for scenarios with network coverage.

For the communication process of D2D devices, the signal sending end generally sends SA first. In the LTE system, it is stipulated that SA is sent twice. The SA carries data related information, and then the data is sent. In the LTE system, it is stipulated that the data is sent repeatedly 4 times. . Please refer to Figure 3, which is a schematic diagram of mode1. For example, block 1 and block 2 both indicate that the base station sends a D2D grant (grant), and D2D grant is used to schedule resources for sending SA and data, as represented by block 1 D2D grant schedules SA1 and the resources of data 0 to data 3 in the bottom row, and D2D grant schedules resources of SA2 and data 4 to data 5 in the bottom row in the bottom row. The same is true for mode2, except that there is no process for the base station to schedule resources. The resources used to send SA and data are determined by competition among the terminal equipment as the signal sending end. The signal receiving end first blindly checks the SA. If the SA is received correctly and the identification number (ID) carried in the SA matches at least one ID in the receiver’s ID list, it means that the SA is sent to the signal receiving end. The signal receiving end receives subsequent data according to the related information of the data carried in the SA.

SA has multiple formats, that is, sidelink control information (SCI) format, including SCI format 0 and SCI format 1. Taking SCI format 0 as an example, the fields included in SCI format 0 are shown in Table 1. Shown.

Table 1

5) V2X, in the Rel-14/15/16 version, V2X as a major application of D2D technology was successfully established. V2X will optimize the specific application requirements of V2X on the basis of the existing D2D technology. It is necessary to further reduce the access delay of V2X devices and solve the problem of resource conflicts.

V2X specifically includes three application requirements: V2V, V2P, and V2I/N, as shown in Figure 4. V2V refers to the communication between vehicles; V2P refers to the communication between vehicles and people (including pedestrians, cyclists, drivers, or passengers); V2I refers to the communication between vehicles and network equipment, such as RSU, and There is another type of V2N that can be included in V2I. V2N refers to the communication between the vehicle and the base station/network.

Among them, RSU includes two types: terminal type RSU, because it is located on the roadside, the terminal type RSU is in a non-mobile state, and there is no need to consider mobility; base station type RSU can provide timing synchronization for vehicles communicating with it And resource scheduling.

For LTE V2X communication, in order to ensure the delay requirement, the signal sending end may simultaneously send SA and data in one subframe, as shown in Figure 5. The receiving end of the signal blindly detects the SA first, and at the same time, it needs to buffer the data of the same subframe, because it is possible that the data scheduled by the SA is in the same subframe. If the SA is received correctly and the ID carried in the SA matches the ID of the signal receiving end, then The signal receiving end determines whether to demodulate or decode the data in the same subframe buffered or to receive data in the subsequent subframe according to the related information of the data carried in the SA. In the method shown in Figure 5, the resources used to send SA and the resources used to send data have their own resource pools. The part shown in the dashed box in Figure 5 is the resource pool of the SA, and the resources in the dashed box The remaining part outside the part is the data resource pool.

In order to reduce the peak-to-average power ratio (PAPR), for a terminal device, the resources used to send SA and the resources used to send data are preferably continuous in the frequency domain. So another method is to share the resource pool between SA and data. SA can be placed continuously with data in the frequency domain, as shown in Figure 6.

In NR V2X, multiple multiplexing methods of control information and data can be supported, such as the following 5 methods:

1. Time division multiplexing (TDM) mode, and the frequency domain bandwidth occupied by data and control information is the same, please refer to Figure 7A;

2. TDM mode, and the frequency domain bandwidth occupied by data and control information is different, but the start position of the frequency domain resource occupied by the data is the same as the start position of the frequency domain resource occupied by the control information. Refer to Figure 7B;

3. FDM mode, and the time domain length of data and control information is the same, please refer to Figure 7C;

4. Data and control information is an embedded multiplexing method, and the resources occupied by control information are located in the area of the resources occupied by data, or in other words, control information is a part of the resources multiplexed with data, refer to Figure 7D;

5. FDM mode, and the time domain length of the data and the control information are different, but the starting position of the data in the time domain is the same as the starting position of the control information in the time domain. Refer to Figure 7E.

6) The terms "system" and "network" in the embodiments of this application can be used interchangeably. "At least one" means one or more, and "plurality" means two or more. "And/or" describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone, where A, B can be singular or plural. The character "/" generally indicates that the associated objects are in an "or" relationship. "The following at least one item (a)" or similar expressions refers to any combination of these items, including any combination of a single item (a) or plural items (a). For example, at least one item (a) of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple .

And, unless otherwise stated, the ordinal numbers such as "first" and "second" mentioned in the embodiments of this application are used to distinguish multiple objects, and are not used to limit the order, timing, priority, or order of multiple objects. Importance. For example, the first priority criterion and the second priority criterion are only for distinguishing different criteria, but do not indicate the difference in content, priority, or importance of the two criteria.

Some concepts related to the embodiments of the present application are introduced as above, and the technical features of the embodiments of the present application are introduced below.

Similar to the D2D resource allocation mode, V2X resource allocation also has two modes: mode three (mode 3) and mode four (mode 4).

Mode 3 is similar to Mode 1, and both are centralized control methods. In mode three, resources are allocated by a central control device (such as a base station or a relay station, etc.), and the resources are allocated to the terminal device as a signal sending end through scheduling. Different from the mode that the base station only schedules resources once (one shot), in mode 3, the resources scheduled by the base station can also be used multiple times for the terminal equipment as the signal transmitter, which is similar to semi-persistent scheduling (semi-persistent scheduling). scheduling, SPS). Centralized resource allocation is mainly for scenarios with network coverage.

Mode 4 is similar to Mode 2, which is a distributed resource multiplexing method based on competition. The terminal device as the signal sending end obtains the transmission resources from the resource pool through competition. In a scenario with network coverage, the resource pool is a block of resources allocated by the base station, and each terminal device competes for a small block of resources in this block of resources. In a scenario where there is no network coverage, the resource pool is the predefined system bandwidth that terminal devices can obtain, and each terminal device competes for resources under the predefined system bandwidth. The difference between the terminal device as the signal sender in mode 2 and the completely random selection of resources in the resource pool is that in mode 4, the terminal device as the signal sender needs to monitor (sensing) resources before sending to identify which resources have been occupied , Which resources are available.

Mode 4 sensing technology includes energy detection and/or SA decoding (decoding), specifically, includes energy detection or SA decoding, or includes energy detection and SA decoding. Energy detection and SA decoding can be used alone or in combination. Energy detection, that is, the terminal device measures the energy of each resource unit in the resource pool, such as measuring the reference signal received power (RSRP) or reference signal received quality (RSRQ) of the resource. If the measurement result exceeds a certain threshold, then the corresponding resource is considered to be occupied, otherwise, the corresponding resource is considered to be an idle resource.

SA decoding means that the terminal device receives SA from other terminal devices in the resource pool, and then decodes the received SA. Since the SA contains the resource information of the data to be sent by the other terminal device, that is, the resource information occupied by the data to be sent by the other terminal device in the resource pool is indicated in the SA. Therefore, the terminal device can know the resources occupied by other terminal devices in the resource pool by decoding the SA of other terminal devices. If the terminal device successfully decodes the SA, it is considered that the corresponding resource is occupied. If the decoding is unsuccessful, it is considered that the other terminal device does not occupy resources in the resource pool. Terminal devices can only transmit data on resources that are not occupied in the resource pool.

Energy detection and/or SA decoding are performed in a fixed time window in the resource pool. In other words, the terminal device can continue to perform energy detection or SA decoding. When there is data to be sent, check the time window Then select the available resources. Referring to FIG. 8, the size of the time window (the detection window in FIG. 8) corresponding to energy detection and/or SA decoding may be 1s. When data arrives, that is, in Figure 8, there is a selection (or reselection) trigger at time n, and the terminal device looks at the detection result or decoding result in the detection window of n～(na), in order to be in [n+T1, In the selection window of n+T2], select available resources to send data. For example, the terminal device chooses to send SA at time n+c in [n+T1, n+T2], and send data at time n+d (data ).

Regarding V2X resource selection, there are currently three steps:

Step 1. The terminal device considers that the resources in the current resource pool are all available resources.

Step 2. The terminal device uses the SA decoding in the sensing technology to eliminate the occupied resources in the resource pool.

If there are still available resources after the exclusion, you can go to step 3. Or, if there are no available resources after the exclusion, the terminal device continues to perform energy detection on the resources that have been occupied. For a resource, if the detected energy value is less than the threshold value, the resource is an available resource, and if the detected energy value is not less than the threshold value, the resource is an unusable resource. The available resources of the terminal device can constitute a candidate resource set. If the total number of available resources of the terminal device is less than 20% of the total resources in the resource pool, increase the energy value threshold at intervals of 3dB, and repeat step 2 after the increase until the terminal device is available The total number of resources is greater than or equal to 20% of all resources in the resource pool.

Wherein, the threshold value is associated with the priority information of the V2X service. The higher the priority, the higher the threshold value, and vice versa, the smaller the threshold value. At present, there are a total of 8 priority levels in V2X, which are indicated by 3-bit signaling in SA. The terminal device decodes the SA from other terminal devices to obtain the priority of the service of the other terminal device, and compares it with the priority of the service of the terminal device to determine the threshold used. For example, an 8×8 priority comparison table can be obtained from 8 priorities. Each small square in the table represents a threshold value. There are 64 threshold values in total, and the value range of the threshold value is From [-128dBm] to [0dBm], take a value every 2dB.

In addition, in step 2, when the terminal device decodes the SA from other terminal devices, it can not only figure out the resource location occupied by the current data sent by other terminal devices, but also know what other terminal devices reserve for the next data transmission. Resource location. That is, if the terminal device 1 transmits the current SA in the transmission time interval (TTI) (n+c), other terminal devices can decode the SA and know the resource location currently occupied by the terminal device 1, and also know the terminal The reservation period of the frequency domain resources currently occupied by device 1, that is, the terminal device 1 sends the current data packet in TTI(n+d), and reserves the position of the period length of the interval P*i in the time domain as the next time The resource of sending the data packet, that is, the time domain resource location of the next sending data packet is TTI(n+d+P*i), where P=100, and the value range of i is [0,1,2,...10 ], i=0 means no resources are reserved, i=1 means the reserved period is 100*1, i=2 means the reserved period is 100*2, and so on, the maximum reserved period is 1000ms. The value of i is indicated by 4-bit signaling in SA.

Step 3 includes the following three sub-steps.

Step 3-0: The time that each terminal device occupies the resource is determined by a counter. When the terminal device starts to occupy resources, the counter is set to the maximum value, and then the value of the counter decreases with the passage of time. When the value of the counter decreases to 0, the terminal device randomly selects a probability value p. The value range is [0, 0.2, 0.4, 0.6, 0.8]. In addition, the terminal device also generates a random number and compares the random number with p to determine whether to continue using the currently occupied resources. For example, if the selected p=0.4, the terminal device compares 0.4 with the generated random number. If the random number is greater than or equal to p, the terminal device continues to use the current resource to send data, and the terminal device resets the counter value ( reset) is the maximum value, and the terminal device does not need to perform steps 3-1 and 3-2; or, if the random number is less than p, the terminal device reselects the resource in the resource pool. At this time, the terminal device performs step 3-1 And step 3-2.

Step 3-1: The terminal device sorts the available resources obtained in step 2 according to the energy value, and then selects a resource subset with the lowest energy value from the candidate resource set in the order of energy value from small to large. The size of the set is equal to 20% of all resources in the entire resource pool.

Step 3-2. The terminal device randomly selects a resource in the resource subset to send a data packet.

When the terminal device sends data, the data sent may be periodic data. Therefore, when the terminal device selects resources, in addition to selecting the resources used this time, it also needs to reserve the periodic data for subsequent needs Resources used. At present, when resources are reserved, the size of the reserved resources is fixed, and the reservation mechanism is not flexible enough.

In view of this, the technical solutions of the embodiments of the present application are provided. In the embodiment of the present application, the first terminal device can indicate the time domain information and/or frequency domain information of the reserved resource by sending the first signaling, and the second terminal device as the receiving end can learn the information of the reserved resource. Therefore, the first service data or control information can be received at the correct position through the reserved resources. Through the method provided by the embodiments of this application, if other information is currently scheduled, the reserved resources may be the same as the period or size of the resources occupied by the currently scheduled information, or may not be the same, as long as the first message is passed. With the information indicating the reserved resources, the second terminal device can learn the location of the reserved resources, thereby improving the flexibility of resource reservation.

The technical solutions provided in the embodiments of this application can be applied to D2D scenarios, which can be NR D2D scenarios or LTE D2D scenarios, etc., or can be applied to V2X scenarios, which can be NR V2X scenarios or LTE V2X scenarios, etc., or can also be It is applied to other scenarios or other communication systems, and there are no specific restrictions.

The following describes the network architecture applied by the embodiments of the present application. Please refer to FIG. 9, which is a network architecture applied in the embodiment of this application.

Figure 9 includes a network device and two terminal devices, namely terminal device 1 and terminal device 2. Both of these terminal devices can be connected to the network device, or only the terminal device 1 can be connected to the network device of the two terminal devices. The terminal device 2 is not connected to the network device, and the two terminal devices can also communicate through sidelink, that is, the terminal device 1 is a terminal device with network coverage, and the terminal device 2 is a terminal device with partial network coverage. Figure 9 takes as an example that only the terminal device 1 is connected to the network device. Of course, the number of terminal devices in Figure 9 is just an example. In actual applications, network devices can provide services for multiple terminal devices.

The network device in FIG. 9 is, for example, an access network device, such as a base station. Wherein the access network device in different systems corresponding to different devices, for example, in the fourth generation mobile communication technology (the 4 ^th generation, 4G) system, the eNB may correspond, a corresponding access network device 5G 5G in the system, For example, gNB.

The terminal device in FIG. 9 is a vehicle-mounted terminal device or a car as an example, but the terminal device in the embodiment of the present application is not limited to this.

Next, the technical solutions provided by the embodiments of the present application will be introduced in conjunction with the drawings.

An embodiment of the present application provides a communication method. Refer to FIG. 10, which is a flowchart of the method. In the following introduction process, the application of this method to the network architecture shown in FIG. 9 is taken as an example. In addition, the method can be executed by two communication devices, for example, the first communication device and the second communication device. Among them, the first communication device or the second communication device may be a network device or a communication device capable of supporting the network device to implement the functions required by the method, or may be a terminal device or a terminal device capable of supporting the functions required by the terminal device to implement the method. The communication device can of course also be other communication devices, such as a chip system. And there are no restrictions on the implementation of the first communication device or the second communication device. For example, the two communication devices can be implemented in the same form, for example, both can be implemented in the form of equipment, or the two communication devices can also be implemented as Different forms, for example, the first communication device is implemented in the form of a device, the second communication device is implemented in the form of a chip system, and so on. Among them, the network equipment is, for example, a base station.

For ease of introduction, in the following, the method is executed by the terminal device and the terminal device as an example, that is, the first communication device is the terminal device (for example, called the first terminal device), and the second communication device is the terminal device (for example, Referred to as the second terminal device) as an example. Because this embodiment is applied to the network architecture shown in FIG. 9 as an example, the first terminal device described below may be the terminal device 1 in the network architecture shown in FIG. 9, and the first terminal device described below may be The second terminal device may be the terminal device 2 in the network architecture shown in FIG. 9. In the following, multiple second terminal devices may be involved, and only one of the second terminal devices is illustrated in FIG. 9. In addition, the network device described in the following may be a network device in the network architecture shown in FIG. 9.

S101. The first terminal device determines reserved resources.

The reserved resources are used to send information in the future, and the information sent through the reserved resources may include service data or control information. When the first terminal device determines the reserved resources, it may not be sure what information the reserved resources are used to send, but only reserve the reserved resources for backup; or, the first terminal device may also explicitly reserve The reserved resources are set aside when the resources are used. For example, the first terminal device determines the reserved resources for the first information.

The first information may include one of the following or any combination thereof: service data (may be referred to as first service data), control information, or feedback information. For example, the first information includes only the first service data, or the first information includes only control information, or the first information includes only feedback information, or the first information includes only the first service data and control information, or the first information only includes control Information and feedback information, or the first information includes only first service data and feedback information, or the first information includes first service data, control information, and feedback information. The first service data is, for example, carried by a data channel, the data channel is, for example, a physical sidelink shared channel (PSSCH); the control information is, for example, carried by a control channel, and the control channel is, for example, a physical sidelink control. Channels (physical sidelink control channels, PSSCH), control information includes sidelink control information (sidelink control information, SCI), etc.; feedback information, for example, is carried by a feedback channel, and the feedback channel is, for example, a physical sidelink feedback channel (physical sidelink control information). sidelink feedback channel, PSFCH), the feedback information includes, for example, sidelink feedback control information (SFCI). More specifically, the feedback information may include positive acknowledgement (ACK) or negative acknowledgement (NACK) and the like. It can be understood that the reserved resources may correspond to at least one of a data channel, a control channel, or a feedback channel.

The first information is, for example, periodic information. For example, the first information is first service data, and the first service data is periodic service data. Therefore, the first terminal device can determine that the reserved resource is reserved multiple times. Or the first information may not be periodic information, but may need to be sent multiple times, the first terminal device may determine that the reserved resource includes multiple sub-resources, and the multiple sub-resources are aperiodic resources. In the case that the first information is periodic information, the resources reserved for different times may also be periodic resources, then the reserved resources can be considered as reserved resources for one period, which is equivalent to: The reserved resources are reserved multiple times.

If the reserved resources need to be reserved periodically, then the reservation times of the reserved resources are multiple times, which indicates that the number of reserved resources is multiple. Of course, the time domain of different reserved resources The information is different. Periodically reserved resources can be understood to mean that a reserved resource is reserved multiple times, which is equivalent to reserved multiple resources (each resource is called a reserved resource), and these multiple resources are Periodic resources. One reserved resource can be used to send the first information at one time, and multiple reserved resources can be used to send the first information at least once. In addition, if the first information is sent multiple times, the first information sent multiple times may be the same, or it can be understood that the information carried by multiple reserved resources is the same. For example, to improve coverage, the same information needs to be sent multiple times. Or, if the first information is sent multiple times, the first information sent multiple times may also be different, or it may be understood that the information carried by different reserved resources may be different. For example, the first information is service data. The service data corresponds to different transport blocks (TB). It can be considered that a reserved resource is used to carry one of the transport blocks. Then the different reserved resources carry The transmission blocks may be different, that is, the terminal device transmits each transmission block separately on the periodically reserved resources; or, the first information is service data, which corresponds to one transmission block, which can be considered as multiple reserved The resource is used to carry this transmission block, that is, the transmission block carried by different reserved resources is the same, but it can be different redundancy versions of the same transmission block, that is, the terminal equipment has more resources on the periodic reservation. Retransmit one transmission block at a time; or, the first information is service data, the service data corresponds to a transmission block, and the transmission block is divided into multiple code blocks or code block groups, and a reserved resource is used to carry it If a code block or code block group is selected, the code blocks or code block groups carried by different reserved resources may be different.

If the reserved resources are non-periodic, it can be considered that there is no concept of the number of reservations. At this time, it can be considered that the reserved resources include one or more sub-resources. One sub-resource can be used to send the first information at one time, and multiple sub-resources can be used to send the first information at least once. In addition, if the first information is sent multiple times, the first information sent multiple times may be the same, or it can be understood that the information carried by multiple sub-resources is the same. Or, if the first information is sent multiple times, the first information sent multiple times may also be different, or it is understood that the information carried by different sub-resources may be different. For example, the first information is service data. The service data corresponds to different transmission blocks. It can be considered that one sub-resource is used to carry one of the transmission blocks. Then the transmission blocks carried by different sub-resources may be different, that is, the terminal equipment Each transmission block is initially transmitted on the non-periodically reserved resources; or, the first information is service data, and the service data corresponds to one transmission block. It can be considered that multiple sub-resources are used to carry this transmission block, that is, different The transmission blocks carried by the sub-resources are the same, but can be different redundancy versions of the same transmission block, that is, the terminal device retransmits each transmission block on the non-periodically reserved resources; or, the first information is the service Data, the service data corresponds to a transmission block, and the transmission block is divided into multiple code blocks or code block groups, and one sub-resource is used to carry one of the code blocks or code block groups, then different sub-resources carry The code blocks or code block groups may be different.

The first information may include a transmission block. For example, if the transmission block needs to be repeatedly transmitted multiple times, the transmission block and the reserved resource can correspond one-to-one, which is equivalent to using multiple reserved resources periodically for the transmission block. The transmission block is sent at least once, or the transmission block is sent at least once using non-periodically reserved resources. Alternatively, the first information includes one transmission block, but the transmission block can be divided into multiple code blocks or code block groups, and the code blocks or code block groups correspond to the reserved resources one to one, and one reserved resource carries one code. The block or code block group is equivalent to using periodically reserved resources to send the transmission block once, or using non-periodically reserved resources to send the transmission block once. Alternatively, the first information may include multiple transmission blocks, for example, a one-to-one correspondence between periodically reserved resources and transmission blocks, one periodically reserved resource is used to carry one transmission block, and multiple periodically reserved resources The resource is used to carry at least one transmission block, which is equivalent to that multiple periodically reserved resources can be used for single transmission of at least one transmission block. Alternatively, the first information may include multiple transmission blocks, for example, aperiodic sub-resources and transmission blocks correspond one-to-one, one aperiodic sub-resource is used to carry one transmission block, and multiple aperiodic sub-resources are used To carry at least one transmission block, it is equivalent to multiple aperiodic sub-resources that can be used for a single transmission of at least one transmission block. Or, when the first information includes multiple transmission blocks, it is also possible that among the multiple periodically reserved resources, two or more reserved resources are used to carry the same transmission block, and there are also periodic pre- The reserved resources are used to carry different transport blocks. Or, when the first information includes multiple transmission blocks, it is also possible that two or more sub-resources are used to carry the same transmission block among the non-periodically reserved resources, and the other sub-resources are used to carry different transmissions. Piece.

The first information carried by the reserved resources may be initial transmission information or retransmission information, which is not specifically limited. Or, if multiple periodically reserved resources carry the same information, which is equivalent to sending the first information multiple times through multiple reserved resources, then if the first reserved resource carries the first information One piece of information is initial transmission information, and the first piece of information carried by other reserved resources is retransmission information. Or, if multiple aperiodic sub-resources carry the same information, which is equivalent to sending the first information multiple times through multiple sub-resources, then, if the first information carried by the first sub-resource is the initial transmission information , The first information carried by other sub-resources is retransmission information.

Sending the first information through the reserved resources may be broadcast, or multicast, or unicast, or in other words, the first information may be a broadcast service, a multicast service, or a unicast service.

Wherein, step 101 may be an optional step. The first terminal device may not perform step 101, and considers that all resources are available resources, and can be arbitrarily selected as reserved resources. Alternatively, the first terminal device may also determine that the resources in the current resource pool are available resources through step 1 in the V2X resource selection introduced above, and may select the resources in the resource pool as reserved resources. Alternatively, the first terminal device may also exclude the occupied resources in the resource pool through

steps

1 and 2 in the resource selection of V2X described above, and select resources in the resource pool as reserved resources from the remaining available resources. Alternatively, the first terminal device may also adjust the set of available resources in conjunction with step 3-1 in the resource selection of V2X described above, and select resources in the resource pool as reserved resources from the available resources.

S102. The first terminal device sends first signaling to at least one second terminal device, and at least one second terminal device receives the first signaling from the first terminal device (in FIG. 10, only one of the second terminal devices Signal). The first signaling is used to indicate the information of the reserved resources, or the parameters of the first signaling are used to indicate the information of the reserved resources. Wherein, the information of the reserved resource may include time domain information and/or frequency domain information of the reserved resource, and the time domain information is used to indicate the length of time occupied by the reserved resource. The frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource. For example, the time domain information may include the length of time occupied by reserved resources.

Optionally, the first signaling is used to indicate the information of the reserved resources, and may include the first signaling used to indicate whether to reserve resources. The first signaling indicates that no resources are reserved, or the first signaling indicates that resources are reserved, such as default resources are reserved.

Specifically, the information of the reserved resources may include time domain information or frequency domain information of the reserved resources, or the information of the reserved resources may include time domain information and frequency domain information of the reserved resources. After obtaining the time domain information and/or frequency domain information of the reserved resource, the second terminal device can determine the location of the reserved resource, so that the first information can be correctly received on the reserved resource. If the reserved resource is a periodic resource, the information of the reserved resource may include the information of the first reserved resource (in chronological order) among the plurality of reserved resources. That is to say, the information of the reserved resource may only include the time domain information and/or frequency domain information of the first reserved resource, and among the plurality of reserved resources, except for the first reserved resource The time-domain information of other reserved resources may be reflected by the number of reservations. In this case, it can be understood that the information of the reserved resource indicates one (or, one) reserved resource, and the reserved resource is reserved multiple times.

Alternatively, if the reserved resource is a periodic resource, the information of the reserved resource may also include time domain information and/or frequency domain information of multiple reserved resources. In this case, it can still be understood that one (or, one) reserved resource is reserved multiple times, but the information of the reserved resource includes the time domain information and/or the reserved resource each time. Frequency domain information. For example, the time domain information of reserved resources may include the time lengths of multiple reserved resources. For example, the frequency domain information of a reserved resource may include frequency domain information of multiple reserved resources.

If the reserved resource is an aperiodic resource, the information of the reserved resource may include time domain information and/or frequency domain information of all sub-resources included in the reserved resource. For example, the time domain information of the reserved resource may include the time domain length of each sub-resource included in the reserved resource, and may also include the time-domain starting position of each sub-resource. For example, the frequency domain information of the reserved resource may include the frequency domain information of each sub-resource included in the reserved resource.

The first signaling can be SCI, master information block (MIB), system information block (system information block, SIB), radio resource control (radio resource control, RRC) layer signaling, or media access control ( Medium access control (MAC) layer signaling and a combination of one or more signaling.

The frequency domain information of the reserved resource may indicate the frequency domain position of the reserved resource. For example, the frequency domain information of the reserved resource includes the frequency domain start position and frequency domain bandwidth of the reserved resource, or includes the reserved resource The start position and end position of the frequency domain, or the frequency domain bandwidth and end position of the frequency domain including reserved resources, or the frequency domain information may also include other types of information. Take the frequency domain information of the reserved resource including the frequency domain start position and frequency domain bandwidth of the reserved resource as an example. If the reserved resource is a periodic resource, and the reserved resource is reserved multiple times, and the frequency domain position of each reserved resource in the multiple reserved resources is the same, the reserved resource The frequency domain information only needs to include the overall frequency domain start position and frequency domain bandwidth of multiple reserved resources, which is equivalent to that the frequency domain information of the reserved resource only includes a frequency domain start position and a frequency domain Bandwidth, the second terminal device combined with the resource reservation period can determine the frequency domain position of each reserved resource among the multiple reserved resources.

Or, if the reserved resource is a non-periodic resource, and the number of sub-resources is greater than 1, and the frequency domain positions of different sub-resources in the multiple sub-resources are different, the frequency-domain information of the reserved resource may include multiple sub-resources. The frequency domain start position and frequency domain bandwidth of each sub-resource in the resource are equivalent to that the frequency domain information of the reserved resource includes multiple frequency domain start positions and at least one frequency domain bandwidth.

Or, if the reserved resource is a periodic resource, different reserved resources among the multiple reserved resources have different frequency domain positions, but the multiple reserved resources perform frequency hopping according to the first step length. The frequency domain information of the reserved resource may include the frequency domain start position and frequency domain bandwidth of the first reserved resource (in time sequence) among the plurality of reserved resources, and the first step length.

Or, if the reserved resource is a non-periodic resource, and the number of sub-resources is greater than 1, different sub-resources in multiple sub-resources have different frequency domain positions, but multiple sub-resources are frequency hopping according to the first step length , The frequency domain information of the sub-resources may include the frequency-domain start position and frequency-domain bandwidth of the first sub-resource (in time sequence) among the plurality of sub-resources, as well as the first step length.

In the embodiment of the present application, the time domain information of the reserved resource may include the length of time occupied by the reserved resource. For example, the time domain information of the reserved resource includes the time domain start position and time length of the reserved resource, or includes the time domain start position and time domain end position of the reserved resource, or includes the reserved resource information The length of time and the end position of the time domain, or the time domain information may also include other types of information. Optionally, the time-domain information of the reserved resource may also indicate a time-domain offset, and the time-domain offset is the time between the time point when the first device sends the first signaling to the start time point of the reserved resource Or the time interval between the time point when the second device receives the first signaling and the start time point of the reserved resource. For example, the time domain offset may be the time interval between the time when the first device finishes sending the first signaling and the start time of the reserved resource, or it may be the time when the first device starts to send the first signaling. The time interval between the time point and the start time point of the reserved resource, or it may be the time interval between the time point when the second device receives the first signaling and the start time point of the reserved resource, Or, it may be the time interval from the time point when the second device starts receiving the first signaling to the start time point of the reserved resource.

If the reserved resource is a periodic resource, and the time domain information of the reserved resource only includes the time length of the first reserved resource, the time domain offset may include the first terminal device sending the first signaling The time interval between the time point (or the time point when the second terminal device receives the first signaling) to the time point where the reserved resource is located (or the starting time point of the reserved resource). Alternatively, if the time domain information of the reserved resource includes the time length of multiple reserved resources, the time domain offset may include the time point at which the first terminal device sends the first signaling (or, the second terminal device The time interval between the time point when the first signaling is received) and the time point where the first reserved resource is located (or the start time point of the first reserved resource), then the second terminal device only It is necessary to obtain the time point when the first terminal device sends the first signaling (or the time point when the second terminal device receives the first signaling) to the location where the first reserved resource among the multiple reserved resources is located. The time interval between time points (or the start time point of the first reserved resource) can determine the time domain position of each reserved resource in the plurality of reserved resources.

If the reserved resource is an aperiodic resource, and the time domain information of the reserved resource only includes the time length of one sub-resource, the time domain offset may include the time point when the first terminal device sends the first signaling (Or, the time interval from the time point when the second terminal device receives the first signaling) to the time point where the sub-resource is located (or the starting time point of the sub-resource). Alternatively, if the time domain information of the reserved resource includes the time length of multiple sub-resources, the time domain offset may include the time point at which the first terminal device sends the first signaling (or the second terminal device receives the first signaling) A signaling time point) to the time point of the first sub-resource (or the start time point of the first sub-resource), then the second terminal device only needs to obtain the first terminal device to send The time point when the first signaling is finished (or the time point when the second terminal device receives the first signaling) to the time point where the first sub-resource of the multiple sub-resources is located (or the start of the first sub-resource) The time interval between the start time point) can determine the time domain position of each sub-resource in the multiple sub-resources.

Wherein, the unit of the time domain offset may be a slot or a symbol, or a combination of a slot and a symbol. The unit of the length of time occupied by a reserved resource can be a time slot or a symbol, or a combination of a time slot and a symbol. The unit of multiple resource reservation periods may be time slots or symbols, or may also be a combination of time slots and symbols. The symbols described in the embodiments of the present application may refer to orthogonal frequency division multiplexing (OFDM) symbols.

If the reserved resource is a periodic resource, then optionally, the time domain information of the reserved resource can also indicate one of the following or any combination of them: resource reservation period, the number of times the reserved resource is reserved , Or, the length of time occupied by one of the multiple reserved resources. Among them, if it is considered that one reserved resource is used for one transmission, the number of reservations of the reserved resource can be understood as the number of reserved resources. Among them, the reserved resources are repeated in the time domain at intervals of the resource reservation period. The number of reservations is the number of times the reserved resources are repeated in the time domain with the resource reservation period as the interval.

If the time domain information of the reserved resource only indicates the time domain information of the first reserved resource, the length of time occupied by the reserved resource is the length of time occupied by the first reserved resource. Or, if the time domain information of the reserved resource includes the time domain information of multiple reserved resources, then if the time length occupied by each reserved resource in the multiple reserved resources is the same, the pre- The time domain information of reserved resources only needs to include the length of time occupied by any one of the multiple reserved resources, and if different reserved resources among the multiple reserved resources are occupied If the time length of is different, then the time domain information of the multiple reserved resources may include the time length occupied by each reserved resource in the multiple reserved resources.

For example, please refer to FIG. 11, which is an example of indicating information of multiple reserved resources through the first signaling or the parameters of the first signaling. In FIG. 11, the function of implementing the first signaling through SCI is taken as an example, for example, the first signaling is SCI1. The part marked "\" in Fig. 11 represents reserved resources. In Fig. 11, only two reserved resources are drawn, and the reserved resources are periodic resources as an example. K in FIG. 11 represents the time domain offset, and K at this time is the moment when the first terminal device sends the first signaling (or the moment when the second terminal device receives the first signaling) to multiple reserved resources The time interval between the moments where the first reserved resource in. D represents the length of time occupied by a reserved resource. FIG. 11 is an example of the same length of time occupied by different reserved resources. P represents the resource reservation period.

In the embodiment of the present application, the first signaling may not be used for scheduling other information, or the first signaling may also be used for scheduling second information. The second information may include one or any combination of the following: service data, control information, or feedback information. For example, the second information only includes service data (may be called second service data), or the second information only includes control information, or the second information only includes feedback information, or the second information only includes second service data and control information, Either the second information only includes control information and feedback information, or the second information only includes second service data and feedback information, or the second information includes second service data, control information, and feedback information. If the first signaling is also used to schedule the second information, the first signaling may also indicate the time domain position or the frequency domain position of the second information, or indicate the time domain position and the frequency domain position of the second information. By sending the first signaling, the information of the reserved resources can be indicated, and the second information can also be scheduled, so that the reservation of resources and the scheduling of the second information do not need to be implemented through different signaling, which helps save signaling Overhead. For example, in FIG. 11, the part marked with "/" represents the information currently scheduled, that is, the information scheduled by the first signaling.

The second information and the first information may be the same type of information, for example, the first information and the second information are both business data, or the first information and the second information are both feedback information. Alternatively, the first information and the second information may also be different types of information, for example, the first information is feedback information, and the second information is business data, or the first information is business data, and the second information is control information.

In addition, if the first information and the second information are the same type of information, the content of the first information and the second information may be the same. For example, the first information and the second information are both business data, and the first information and the second information It is the same business data (the first business data and the second business data are the same business data). In this case, it can be understood that, in addition to the current scheduling of the second service data, the first terminal device also reserves the second service data because the second service data needs to be transmitted at least once. Multiple reserved resources. Or, if the first information and the second information are the same type of information, the content of the first information and the second information may also be different. For example, the first information and the second information are both business data, and the first information is, for example, the first information. Business data, the second information is the second business data, the first business data and the second business data are different; or, for example, the first information and the second information are both control information, the first information is for example the first control information, the second The information is second control information, and the first control information is different from the second control information. In this case, it can be considered that in addition to scheduling the second service data, the first terminal device may also determine the reserved resources for other service data (first service data) to be sent subsequently. Wherein, if the first information and the second information are both control information, then the first signaling is, for example, SCI, and the second signaling is also, for example, SCI, which is equivalent to that the reserved resources are resources for sending control information. It can be seen that the reserved resources in the embodiment of this application can be used to send the same service data as the currently scheduled service data (second service data), or it can also send service data different from the second service data. The way of retaining resources is more flexible. If the reserved resource is used to send service data different from the second service data, the size of the reserved resource and the size of the resource occupied by the second service data may be the same or different, and the embodiment of this application can be adopted The first signaling is used to indicate the time-domain information and/or frequency-domain information of the reserved resources. The second terminal device can clarify whether the size of the reserved resources is the same or different from the size of the resources occupied by the second service data The location of the reserved resources, so that the corresponding service data can be correctly received on the reserved resources. It can be seen that the resource reservation method provided by the embodiment of the present application is relatively flexible.

The reserved resources can be used to send the first information, and there are also first resources used to send the second information. For example, if the first signaling is SCI, the first signaling indicates reserved resources, and the first signaling also schedules second service data, the second service data is sent through the first resource, and the first terminal device also sends If the second signaling is used to schedule the first service data, the first service data is sent through reserved resources; or, the first signaling is SCI, and the first signaling indicates the reserved resources, The first signaling carries the second control information, and the second control information is sent through the first resource (or the first signaling is sent through the first resource), and the first terminal device also sends the second signaling. If the first control information is carried, the first control information is sent through the reserved resources. Then, the reserved resource and the first resource may have an association relationship.

The reserved resource and the first resource have an association relationship, which may include: the size of the reserved resource has an association relationship with the size of the first resource, or the first position of the reserved resource and the second position of the first resource have The association relationship, or, the size of the reserved resource has an association relationship with the size of the first resource, and the first position of the reserved resource and the second position of the first resource have an association relationship. Among them, the first position refers to the time-frequency position of the reserved resource, or the position of the reserved resource in the resource pool, and the second position refers to the time-frequency position of the first resource, or the time-frequency position of the first resource. The location in the resource pool.

As the first possible implementation manner in which the reserved resource and the first resource have an association relationship, the reserved resource and the first resource have the same size, and the relative time domain position of the reserved resource is the relative time domain of the first resource The positions are the same, and the frequency domain position of the reserved resource is the same as the frequency domain position of the first resource. Wherein, the relative time domain position of the reserved resource is the position of the time domain position of the reserved resource in the time unit, and the relative time domain position of the first resource is the position of the time domain position of the first resource in the time unit, The time unit is, for example, a time slot. If the relative positions of the reserved resources and the first resource are the same, the second terminal device only needs to detect at the same frequency domain position, which can reduce the difficulty of detection by the second terminal device.

For example, referring to Figure 12A, the reserved resource is located in time slot 3. The relative time domain position of the reserved resource refers to the position of the reserved resource in time slot 3. For example, the reserved resource is located in the first time slot of time slot 3. 4 symbols, the relative time domain position of the reserved resource refers to the 4th symbol. The box drawn with "/" in FIG. 12A indicates the location of reserved resources. For example, if the first resource is located in slot 0, the relative time domain position of the first resource refers to the position of the first resource in slot 0. For example, if the first resource is located in the fourth symbol of slot 0, the reserved resource The relative time domain position of is the 4th symbol. The box drawn with "\" in FIG. 12A indicates the location of the first resource. In this case, the relative time domain position of the reserved resource is the same as the relative time domain position of the first resource. In addition, the frequency domain position of the reserved resource is also the same as the frequency domain position of the first resource.

For example, if the first information is first service data, and the second information is second service data, and the size of the first service data and the second service data are the same, this method can be considered. Because the size of the first service data and the second service data are the same, the size of the required resources can also be the same. Therefore, the reserved resources can be made the same size as the first resource, and there is no need to use more resources as reserved resources. Resources. Moreover, the relative time domain position of the reserved resource is the same as the first resource, and the frequency domain position of the reserved resource can also be the same as the first resource, which makes it easier for the second terminal device to determine the position of the reserved resource, which can simplify Implementation of the second terminal device.

Or, for example, the first information is the first service data, and the second information is the second service data. The size of the first service data and the second service data are different. This method can also be considered to simplify the resource reservation mechanism. Then, because the size of the first service data and the second service data are different, if resources of the same size are used for transmission, you need to consider adjusting the modulation and coding scheme (MCS) of the first service data to match the resource Adapt. For example, if the size of the first service data is greater than the size of the second service data, the MCS corresponding to the first service data can be made larger than the MCS corresponding to the second service data, so that more bits can be transmitted with the same resource. Or, if the size of the first service data is smaller than the size of the second service data, the MCS corresponding to the first service data can be made smaller than the MCS corresponding to the second service data, so that fewer bits can be transmitted using the same resource, which helps Improve the transmission success rate. If the MCS of the first service data and the MCS of the second service data are different, then the first signaling or the second signaling may also carry third information, and the third information may be the MCS of the first service data, then the second terminal The device may directly obtain the MCS of the first service data according to the first signaling or the second signaling; or, the third information may also be the difference between the MCS of the second service data and the MCS of the first service data. In this way, The second terminal device obtains the MCS of the second service data according to the first signaling, and can determine the MCS of the first service data according to the third information.

Or, if the first information is the first control information and the second information is the second control information, the size of the control information is relatively stable and is not affected by the size of the service data, so the size of the reserved resource can be made the same as that of the first resource. The same size, no need to reserve more resources. Moreover, in this case, since the relative position of the reserved resource and the first resource is the same, the second terminal device may not need blind detection when receiving the first signaling, which helps to reduce the function of the second terminal device. Consumption.

In addition, if the first signaling is successfully sent, it indicates that the first resource corresponding to the first signaling does not conflict. Therefore, the control information can be continuously transmitted on the reserved resource associated with the first resource to reduce the probability of resource conflict.

As the second possible implementation manner in which the reserved resource and the first resource have an association relationship, the reserved resource has the same size as the first resource, and: the relative time domain position of the reserved resource is relative to the first resource The time domain position has a first deviation, or the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource, or the relative time domain position of the reserved resource and the relative time domain of the first resource The position has a first deviation, and the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource. In this way, the reserved resource is allowed to have a certain offset from the first resource. For example, in the time unit where the reserved resource is located, the position that is exactly the same as the relative position of the reserved resource is occupied by other resources, then the relative time domain position and/or frequency domain of the reserved resource can be made The position has a certain offset relative to the first resource, so that resource reservation can be completed, and there is an association relationship between the reserved resource and the first resource, so that the second terminal device can determine the position of the reserved resource .

For example, referring to Figure 12B, the reserved resource is located in time slot 3. The relative time domain position of the reserved resource refers to the position of the reserved resource in time slot 3. For example, the reserved resource is located in the first time slot of time slot 3. 4 symbols, the relative time domain position of the reserved resource refers to the 4th symbol. The box drawn with "/" in FIG. 12B indicates the location of reserved resources. For example, if the first resource is located in time slot 0, the relative time domain position of the first resource refers to the position of the first resource in time slot 0. For example, if the first resource is located in the third symbol of time slot 0, the position of the first resource is The relative time domain position refers to the third symbol. The box drawn with "\" in FIG. 12B indicates the location of the first resource. In this case, there is a first deviation between the relative time domain position of the reserved resource and the relative time domain position of the first resource, but FIG. 12B shows the frequency domain position of the reserved resource and the frequency domain position of the first resource. Take the same location as an example.

For example, if the first information is the first service data and the second information is the second service data, and the size of the first service data and the second service data are the same, this method can be considered. Because the size of the first service data and the second service data are the same, the size of the required resources can also be the same, so the reserved resources can be made the same size as the first resource, and there is no need to use more resources as reserved Resources.

Or, for example, the first information is the first service data, and the second information is the second service data. The size of the first service data and the second service data are different. This method can also be considered to simplify the resource reservation mechanism. In the same way, because the size of the first service data and the second service data are different, if the same size of resources is used for transmission, you need to consider adjusting the MCS of the first service data to adapt to the resources. The adjustment method can refer to the introduction above . If the MCS of the first service data and the MCS of the second service data are different, then the first signaling or the second signaling may also carry third information, and the third information may be the MCS of the first service data, then the second terminal The device may directly obtain the MCS of the first service data according to the first signaling or the second signaling; or, the third information may also be the difference between the MCS of the second service data and the MCS of the first service data. In this way, The second terminal device obtains the MCS of the second service data according to the first signaling, and can determine the MCS of the first service data according to the third information.

As a third possible implementation manner in which the reserved resource and the first resource have an association relationship, the size of the first resource and the second resource are different, and: the relative time domain position of the reserved resource and the relative time of the first resource The domain position has a first deviation, or the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource, or the relative time domain position of the reserved resource and the relative time domain position of the first resource There is a first deviation, and the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource. Wherein, the frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource, for example, it refers to the second deviation between the center frequency of the reserved resource and the center frequency of the first resource.

For example, if the first information is the first business data, the second information is the second business data, and the size of the first business data and the second business data are different, then you can consider adjusting the size of the resource to make the size of the resource more suitable for The size of the business data carried. For example, if the size of the first information is greater than the size of the second information, the size of the reserved resource may be greater than the size of the first resource, or if the size of the first information is smaller than the size of the second information, then the reserved resource The size of can be smaller than the size of the first resource. This can not only complete the transmission of business data, but also avoid waste of resources.

If the size of the reserved resource is smaller than the size of the first resource, then the second position of the first resource may include the first position of the reserved resource. Referring to FIG. 12C, for example, the first resource is located at the 3rd symbol and the 4th symbol of slot 0, and at the 7th subcarrier and the 8th subcarrier in the frequency domain. The box drawn with "\" in FIG. 12C indicates the location of the first resource. For example, the reserved resource is located at the 3rd symbol of slot 3 and at the 8th subcarrier in the frequency domain. The box drawn with "/" in Figure 12C indicates the location of the reserved resources. It can be seen from the relative position that the second position of the first resource (the 3rd symbol and the 4th symbol, and the 7th subcarrier and 8th subcarrier in the frequency domain, constitute the time-frequency resource) includes The first position of the reserved resource (time-frequency resource formed by the 3rd symbol and the 8th subcarrier in the frequency domain). If the first signaling is successfully sent, it indicates that the first resource corresponding to the first signaling does not conflict, and therefore, the control information can be continuously transmitted in the reserved resource located in the position corresponding to the first resource, thereby reducing the probability of resource conflict. Among them, if the size of the reserved resource is smaller than the size of the first resource, which areas of the first position of the reserved resource overlap with the first position of the first resource can be stipulated by agreement or by the first terminal Device Configuration.

Or, if the size of the reserved resource is greater than the size of the first resource, then the first position of the reserved resource may include the second position of the first resource. Referring to FIG. 12D, for example, the first resource is located at the 3rd symbol of slot 0 and at the 8th subcarrier in the frequency domain. The box drawn with "\" in FIG. 12D represents the location of the first resource. For example, the reserved resources are located in the third symbol of time slot 3, and located in the sixth subcarrier, the seventh subcarrier and the eighth subcarrier in the frequency domain. The box drawn with "/" in Figure 12D represents the location of the reserved resources. It can be seen from the relative position that the first position of the reserved resources (the 3rd symbol, and the 6th subcarrier, 7th subcarrier and 8th subcarrier in the frequency domain, constitute the time-frequency resource) includes The second position of the first resource (time-frequency resource formed by the 3rd symbol and the 8th subcarrier in the frequency domain). Among them, if the size of the reserved resource is greater than the size of the first resource, the first position of the reserved resource includes which areas besides the second position of the first resource, which can be stipulated by agreement, or by the first position Terminal device configuration. For example, the first terminal device may determine whether there is an area contiguous with the second position of the first resource in the time domain and/or in the frequency domain, and whether the overall area formed by the second position of the first resource and these areas is sufficient To accommodate reserved resources, if the overall area formed by the first location of the first resource and these areas is sufficient to accommodate the reserved resources, the first terminal device can determine the overall area formed by the first location of the first resource and these areas As the first position of reserved resources. The position occupied by the reserved resource and the second position of the first resource are continuous in the time domain and/or the frequency domain, so that the second terminal device can detect the second information. Or, if the overall area formed by the second location of the first resource and these areas is not enough to accommodate the reserved resources, the first terminal device may choose not to set the reserved resources, or the first terminal device may continue to determine The second position of the first resource is a discontinuous area in the time domain and/or the frequency domain, and a sufficient area and the second position of the first resource are selected as the first position of the reserved resource.

The first deviation is mentioned in the foregoing, that is, there may be a first deviation between the relative time domain position of the reserved resource and the relative time domain position of the first resource. Then, the first signaling or the second signaling may also carry the first deviation, so that the second terminal device can determine the relative time domain position of the reserved resource according to the first deviation and the relative time domain position of the first resource. Similarly, the second deviation is mentioned in the foregoing, that is, there may be a second deviation between the frequency domain position of the reserved resource and the frequency domain position of the first resource. Then, the first signaling or the second signaling may also carry a second deviation, so that the second terminal device can determine the frequency domain position of the reserved resource according to the second deviation and the relative time domain position of the first resource.

If the size of the reserved resource is different from the size of the first resource, the first signaling or the second signaling may also indicate the size of the reserved resource. For example, the first signaling or the second signaling further carries fourth information, and the fourth information is the ratio of the size of the reserved resource to the size of the first resource, and the ratio may also be referred to as a scaling factor. The second terminal device can determine the size of the first resource according to the first signaling, so that the size of the reserved resource can be determined according to the size of the first resource and the fourth information. Alternatively, the fourth information may not be the scaling factor, but directly the size of the reserved resource, which is more direct.

As a fourth possible implementation manner in which the reserved resource and the first resource have an association relationship, the first information is the first control information, the reserved resource is used to send the first signaling, and the second information is the second control information , The first resource is used to send the second signaling, and the second signaling also schedules the second service data. The second service data is sent through the second resource, for example, the reserved resource can be selected from the third resource. The fourth position of the resource is associated with the third position of the second resource, where the third position is the position of the second resource in the resource pool, and the fourth position is the position of the third resource in the resource pool. For example, the frequency domain position of the third resource is the same as the frequency domain position of the second resource, and the relative position of the third resource in the time unit is the same as the relative position of the second resource in the time unit. Among them, the frequency domain position can refer to a point or a frequency domain range. For example, the frequency domain position of the third resource may be a point, or the third resource occupies a certain bandwidth in the frequency domain, then the frequency domain position of the third resource is the frequency domain range. The size of the reserved resource may be the same as the size of the first resource, or may be different.

Referring to FIG. 12E, the first resource is the part marked with "\" in FIG. 12E, the second resource is the part marked with "/" in FIG. 12E, and the second resource includes the first resource. Then, the reserved resource can be selected from the third resource. The third resource is the blank part shown by the dashed box in FIG. 12E. It can be seen that the size of the third resource is the same as the size of the second resource, and the third resource is The relative position of the resource in the time unit is the same as the relative position of the second resource in the time unit. For example, the horizontal line indicates the reserved resources, and the reserved resources are located in the third resource. Fig. 12E takes an example that the size of the reserved resource is the same as the size of the first resource. The second service data occupies the second resource, which is scheduled in the first signaling, and other terminal devices can avoid the second resource by monitoring the first signaling. Then the position of the reserved resource is also located in the position of the second resource (the third resource is the resource whose relative position in the resource pool is the same as the relative position of the second resource in the resource pool), which can reduce the probability of resource conflicts, And the selection range of reserved resources has become larger and more flexible. For the second terminal device, the first information can be detected in the third resource, and the detection range is relatively small.

If the first signaling is also used to schedule the second service data, the parameters of the first signaling or the first signaling can also indicate whether there is currently other information scheduling. At this time, the first signaling or the first signaling The parameter can indicate the current schedule with other information. If the first signaling is only used for reserved resources and not used for scheduling other information (that is, the first signaling does not schedule any information), the first signaling or the parameters of the first signaling can also be used Indicates whether there is currently scheduling of other information. At this time, the first signaling or the parameters of the first signaling may indicate the current scheduling of no other information. Or, if the first signaling is only used for reserved resources and not for scheduling other information, neither the first signaling nor the parameters of the first signaling may indicate whether there is currently other information scheduling.

As an optional implementation manner, if the first signaling is also used to schedule the second service data, the time domain information and/or frequency information of the reserved resources indicated by the first signaling or the parameters of the first signaling The domain information may include one of the following or any combination thereof: the reserved resources have frequency hopping or no frequency hopping relative to the resources occupied by the second service data, and the position of the reserved resources is relative to the second service data location. The position of the occupied resource has an offset or no offset, or the size of the reserved resource has a scaling factor or does not change relative to the size of the resource occupied by the second service data. That is to say, if the first signaling schedules the second service data, the first signaling will indicate the information of the resources occupied by the second service data, for example, it will indicate the time domain position or frequency of the resources occupied by the second service data. At least one of the domain locations, the first signaling can also indirectly indicate the reserved resources by indicating the relationship between the reserved resources and the resources occupied by the second service data. The second terminal device can determine the reserved resources according to the resources occupied by the second service data indicated by the first signaling and the relationship between the reserved resources and the resources occupied by the second service data. Of course, if the first signaling is also used to schedule the second service data, the first signaling or the parameters of the first signaling can also directly indicate the time domain information and/or frequency domain information of the reserved resources, without indicating The relationship between the reserved resources and the resources occupied by the second service data is not specifically limited.

If the first signaling is also used to schedule the second service data, for example, the resource occupied by the second service data is called the second resource, the first signaling or the parameter of the first signaling may indicate that the reserved resource is relative to the second resource. Whether the resource is frequency hopping, correspondingly, it can also indicate whether the position of the reserved resource is offset or not changed relative to the position of the resource occupied by the second service data. The offset at this time can refer to the frequency domain. Offset. For example, if the frequency domain offset of the reserved resource relative to the second resource is not equal to 0, the first signaling or the parameter of the first signaling may indicate that the reserved resource has frequency hopping relative to the second resource, and It may further indicate the size of the frequency domain offset (or called the frequency hopping amount); or, if the frequency domain offset of the reserved resource with respect to the second resource is 0, the first signaling or the first signaling The parameter of may indicate that the reserved resource has no frequency hopping relative to the second resource. Wherein, if the frequency domain position of each reserved resource (or sub-resource) in the plurality of reserved resources (or sub-resources) is the same, the first signaling or the parameters of the first signaling only need It is enough to indicate whether a reserved resource (or sub-resource) is frequency hopping relative to the second resource; and if different reserved resources (or sub-resources) among the multiple reserved resources (or sub-resources) ) Is different in the frequency domain, the first signaling or the parameter of the first signaling may indicate that each of the multiple reserved resources (or sub-resources) is relative to the first 2. Whether the resource is frequency hopping. Wherein, the first signaling or the parameter of the first signaling may indicate whether the reserved resource (or sub-resource) is frequency hopping or non-frequency hopping relative to the second resource, if the reserved resource (or sub-resource) is indicated Relative to the second resource is frequency hopping, the specific frequency hopping amount and whether to hop to high frequency or low frequency, etc., can be pre-configured by the network equipment to each terminal device, or specified by agreement, or calculated by formula or It can be obtained by looking up the table, or can also be indicated by the first signaling or the parameters of the first signaling together.

For example, the first signaling indicates that the reserved resource (or sub-resource) is frequency hopping relative to the second resource, and the protocol specifies that the specific frequency hopping amount is 1 subcarrier, and the frequency hopping is to high frequency. After receiving the first signaling, the second terminal device can determine the frequency domain position of the second resource according to the indication of the first signaling, and then according to the indication of the first signaling and the provisions of the protocol, the reserved resource can be determined (Or sub-resource) is offset by one sub-carrier to the high frequency relative to the second resource, which also determines the frequency domain position of the reserved resource (or sub-resource). At this time, for example, the frequency domain positions of multiple reserved resources (or sub-resources) are the same.

If the first signaling is also used to schedule the second service data, for example, the resource occupied by the second service data is called the second resource, the first signaling or the parameters of the first signaling can also be used to indicate the reserved resources Whether the size has changed relative to the size of the second resource. For example, if the size of the reserved resource and the second resource are the same, the first signaling or the parameter of the first signaling may indicate that the size of the reserved resource does not change with respect to the second resource; or, if the reserved resource If the size of the second resource is different from that of the second resource, the first signaling or the parameter of the first signaling may indicate that the reserved resource has a change in the size of the second resource, and may further indicate the scaling factor. From this perspective, the parameters of the first signaling or the first signaling indicate whether the size of the reserved resource changes relative to the size of the second resource. It can also be described as the first signaling or the first signaling The parameter indicates that the size of the reserved resource has a scaling factor or no change relative to the size of the second resource. Wherein, if the size of each reserved resource (or sub-resource) in the plurality of reserved resources (or sub-resources) is the same, the first signaling or the first signaling parameter only needs to indicate one Whether the size of the reserved resource (or sub-resource) changes relative to the size of the second resource; and if there are different reserved resources (or, Sub-resources) are different in size, the first signaling or the parameters of the first signaling may indicate that the size of each reserved resource (or sub-resource) in the multiple reserved resources (or sub-resources) is relatively Whether there is a change in the size of the second resource. Wherein, the first signaling or the parameter of the first signaling may indicate whether the size of the reserved resource (or sub-resource) has changed or not changed relative to the size of the second resource, if the reserved resource (or, The size of the sub-resource has changed relative to the size of the second resource, the specific amount of change and the change method (for example, time domain change or frequency domain change, and direction of change (for example, change to high frequency or low frequency) Etc.), etc., may be pre-configured by the network device to each terminal device, or specified by a protocol, or may also be carried in the first signaling or the parameters of the first signaling together. Among them, if there is only a time domain change, the frequency domain scaling factor can be configured to be 0, or no frequency domain scaling factor can be configured; or, if only the frequency domain is changed, the time domain scaling factor can be configured to be 0, or no time domain scaling factor can be configured . In addition, the configured time-domain scaling factor can be an absolute change amount indicating the offset of the reserved resource (or sub-resource) relative to the time domain position of the second resource, or it can also be an indication of the reserved resource The position of the (or sub-resource) in the time unit, relative to the position of the second resource in the time unit, by the amount of change. For example, the scaling factor indicates that the time domain position of the reserved resource (or sub-resource) relative to the second resource is shifted backward by one time domain symbol, which may mean that the reserved resource (or sub-resource) is relative to the second resource. The time domain position of the resource is shifted backward by one time domain symbol, or the second resource is located in time unit 1, and a reserved resource is located in time unit 2. This means that the reserved resource (or sub-resource) is in time unit The time domain position in 2 is shifted backward by one time domain symbol relative to the time domain position of the second resource in time unit 1. The time unit is, for example, a time slot or a time domain symbol.

If the first signaling is also used to schedule the second service data, for example, the resource occupied by the second service data is called the second resource, the first signaling or the parameter of the first signaling may indicate that the position of the reserved resource is relative to The position of the second resource has an offset or does not change, where the offset may include a time domain offset, or a frequency domain offset, or a time domain offset and a frequency domain offset. For example, if the time domain position of the reserved resource and the second resource are the same (here refers to the relative time domain position, it can be understood as the position of the resource in the resource pool, or the position of the resource in the time unit, for example, Is a time slot), the first signaling or the parameter of the first signaling may indicate that the time domain position of the reserved resource does not change relative to the time domain position of the second resource; or, if the time domain position of the reserved resource Different from the time domain position of the second resource (here also refers to the relative time domain position), the first signaling or the parameter of the first signaling may indicate the time domain offset of the reserved resource relative to the size of the second resource, And can further indicate the time domain offset. The same is true for the frequency domain position. For example, if the frequency domain position of the reserved resource and the second resource are the same, the first signaling or the parameter of the first signaling may indicate that the position of the reserved resource is relative to the second resource. The position of the reserved resource has not changed; or, if the frequency domain position of the reserved resource is different from the frequency domain position of the second resource, the parameter of the first signaling or the first signaling may indicate the reserved resource relative to the second resource The size has a frequency domain offset, and can further indicate the frequency domain offset. Wherein, if the time domain position of each reserved resource (or sub-resource) in the multiple reserved resources (or sub-resources) is the same, the first signaling or the parameters of the first signaling only need Indicate that the time domain position of a reserved resource (or sub-resource) has an offset or no offset relative to the time domain position of the second resource; and if multiple reserved resources (or sub-resources) The time domain positions of different reserved resources (or sub-resources) in) are different, the first signaling or the parameter of the first signaling may indicate each of the multiple reserved resources (or sub-resources) The time domain position of each reserved resource (or sub-resource) has an offset or no offset relative to the time domain position of the second resource. If the frequency domain position of each reserved resource (or sub-resource) in the multiple reserved resources (or sub-resources) is the same, then the first signaling or the first signaling parameter only needs to indicate one The frequency domain position of the reserved resource (or sub-resource) has an offset or no offset relative to the frequency domain position of the second resource; and if there are multiple reserved resources (or sub-resources) The frequency domain positions of different reserved resources (or sub-resources) are different, the first signaling or the parameter of the first signaling may indicate each of the multiple reserved resources (or sub-resources). The frequency domain position of the reserved resource (or sub-resource) has an offset or no change relative to the frequency domain position of the second resource. In addition, if the first signaling or the parameters of the first signaling can indicate that the reserved resource (or sub-resource) has a frequency-domain offset relative to the size of the second resource, then the specific offset direction is, for example, to The high-frequency offset or the low-frequency offset may be pre-configured by the network device for each terminal device, or specified by a protocol, or may also be carried in the first signaling or the parameters of the first signaling together. In the same way, if the first signaling or the parameters of the first signaling can indicate the size of the reserved resource (or sub-resource) relative to the second resource by the time domain offset, then the specific offset direction is, for example, the previous Whether the backward offset or the backward offset may be pre-configured by the network device to each terminal device, or specified by a protocol, or may also be carried in the first signaling or the parameters of the first signaling together.

For example, the parameter of the first signaling may indicate the time domain offset of the reserved resource (or sub-resource) relative to the time domain position of the second resource, and the network device is configured with the time domain offset of 1 symbol, the time domain changes backward in chronological order. In addition, the parameter of the first signaling indicates that the reserved resource (or sub-resource) has frequency hopping relative to the second resource, and further indicates that the magnitude of the frequency domain offset is 1 sub-carrier, and the frequency domain is high frequency Variety. Then, after receiving the first signaling, the second terminal device can determine the time domain position and frequency domain position of the second resource according to the indication of the parameters of the first signaling, and then according to the indication of the parameters of the first signaling and the network device Configuration, it can be determined that the time domain position of the reserved resource (or sub-resource) is shifted backward by one time domain symbol relative to the time domain position of the second resource, and the frequency domain position of the second resource is shifted to the high frequency Offset by one subcarrier, of course, the reserved resource (or subresource) described here may be one of multiple reserved resources (or subresources).

For another example, please refer to FIG. 13, which is an example of indicating the information of reserved resources through the first signaling. In FIG. 13, the function of implementing the first signaling through SCI is taken as an example. For example, the first signaling is SCI1. The part marked with "\" in Figure 11 represents reserved resources. Figure 13 only shows two reserved resources, and the reserved resources are periodic resources as an example. K in FIG. 13 represents the time domain offset, at this time K is the time when the first terminal device sends the first signaling (or the time when the second terminal device receives the first signaling) to multiple reserved resources The time interval between the moments where the first reserved resource in. D represents the length of time occupied by a reserved resource. FIG. 13 is an example of the same length of time occupied by different reserved resources. P represents multiple resource reservation periods. In addition, the first signaling also indicates that the size of the reserved resource has changed relative to the size of the second resource, and indicates a scaling factor, which indicates that the size of the reserved resource is twice the size of the second resource, and the agreement stipulates The frequency domain change method is to extend to the high frequency direction in the frequency domain, and the first signaling also indicates that the reserved resource is frequency hopping relative to the second resource, and the agreement stipulates that the frequency hopping is to the high frequency direction, and the frequency hopping amount is One subcarrier. Therefore, the second terminal device can determine the frequency domain position of the reserved resource and determine the time domain position of the reserved resource in a time unit. In addition, in addition to the frequency hopping of the reserved resources relative to the resources occupied by the currently scheduled information, frequency hopping can also be implemented among multiple reserved resources. Refer to the part marked "\" in FIG. 13.

It can be seen from the above introduction that the first signaling or the parameters of the first signaling can directly indicate the time domain position and/or frequency domain position of the reserved resource, or it can also be indicated by the information indicating the resource occupied by the second service data , And indicating the relationship between the resources occupied by the second service data and the reserved resources to indicate the time domain position and/or frequency domain position of the reserved resources, in a more flexible manner.

In order to consider indicating more content to the second terminal device, as an optional implementation manner, the first signaling or the parameters of the first signaling are also used to indicate one of the following information or any combination thereof: The channel corresponding to the reserved resource, the reserved resource is used for multiple transmissions of one transmission block, the reserved resource is used for the single transmission of multiple transmission blocks, and the reserved resource is used for initial data transmission or Data retransmission, or, the reserved resources are used for multicast, broadcast, or unicast services.

The channel corresponding to the reserved resource may include at least one of a data channel, a control channel, or a feedback channel. If each of the multiple reserved resources (or sub-resources) corresponds to the same channel, the first signaling or the parameters of the first signaling only need to indicate this One channel is sufficient, or, if different reserved resources (or sub-resources) among multiple reserved resources (or sub-resources) correspond to different channels, then the first signaling or the first signaling The parameter of may indicate multiple channels, or the first signaling or the parameter of the first signaling may indicate the correspondence between reserved resources (or sub-resources) and channels. Indicating the information of the channel corresponding to the reserved resource to the second terminal device helps the second terminal device to receive the corresponding channel on the reserved resource.

If you inform the second terminal device whether multiple reserved resources (or sub-resources) are used for multiple transmissions of one transport block or for single transmission of multiple transport blocks, it will help the second terminal One reserved resource (or sub-resource) correctly receives the corresponding transmission block. For example, if multiple reserved resources (or sub-resources) are used for multiple transmissions of one transmission block, the second terminal device receives corresponding information after the multiple reserved resources (or sub-resources) The received information can be combined to obtain the transmission block.

The first signaling or the parameters of the first signaling may also indicate whether the reserved resources are used for data retransmission or data initial transmission. For example, the first signaling is also used to schedule second information, the second information is, for example, second service data, and the first information is, for example, first service data. For example, the first service data is the retransmission of the second service data, then the first signaling or the parameters of the first signaling may indicate that the reserved resources are used for data retransmission. Alternatively, the first signaling is also used to schedule second information, the second information is, for example, second service data, the first information is, for example, first service data, and the first service data and the second service data are different service data. That is, the first service data is the initial transmission data, and the first signaling or the parameters of the first signaling may indicate that the reserved resources are used for the initial transmission of data. Of course, in this case, if the reserved resource is a periodic resource, the number of reservations is greater than 1, and each reserved resource is used to carry the first service data itself, which is equivalent to the first service data passing through multiple The reserved resource is transmitted multiple times, then the first service data is the initial data transmission for the first reserved resource, but it is the data retransmission for the other reserved resources. Or, if the reserved resources are non-periodic resources, the reserved resources include sub-resource reservation times greater than 1, and each sub-resource is used to carry the first service data itself, which is equivalent to passing the first service data If multiple sub-resources are transmitted multiple times, then the first service data for the first sub-resource is the initial data transmission, but for the other sub-resources it is the data retransmission. Indicate initial data transmission or data retransmission, which is beneficial for the second terminal device to perform operations such as decoding the received service data. For example, the reserved resources are used for data retransmission, and the second terminal device can combine and decode the first service data received multiple times to obtain a combined gain.

In addition, before each transmission of the first service data (that is, each time the reserved resources are used), the first terminal device may also send second signaling to the second terminal device. The second signaling is used to schedule the first Business data. It can be understood that the reserved resource is only reserved, and reservation does not mean that it will be used. If the first terminal device wants to use a reserved resource, it can schedule the reserved resource by sending second signaling. Resources, the reserved resources scheduled through the second signaling are reserved resources to be used. Because there may be multiple reserved resources (or sub-resources), the first service data may be sent at least once. Then, if the first service data is the initial transmission data, and multiple reserved resources (or, sub-resources) ) Is used for a single transmission of multiple transmission blocks. For example, there is a one-to-one correspondence between a transmission block and a reserved resource (or sub-resource). Then, each reserved resource (or sub-resource) can be considered For sending the first service data once, for different reserved resources (or sub-resources), the corresponding retransmission sequence numbers of the first service data are different, for example, a reserved resource (or , Sub-resource) is used to retransmit the first service data for the first time, the retransmission sequence number is 1, and another reserved resource (or sub-resource) is used to retransmit the first service data for the second time. The serial number is 2. In order to facilitate the distinction, the second signaling can carry the corresponding retransmission sequence number, and a second signaling can be used to schedule a reserved resource (or sub-resource), then the second signaling can carry the reservation The retransmission sequence number corresponding to the resource (or sub-resource).

The first signaling or the parameters of the first signaling may also indicate that the reserved resources are information for multicast services, broadcast services, or unicast services. Generally speaking, if there are multiple reserved resources (or sub-resources), the multiple reserved resources (or sub-resources) should be used for multicast, broadcast, or unicast services in a unified manner. It is only necessary to uniformly indicate whether the reserved resources are used for multicast services, broadcast services, or unicast services; however, it is also possible that different reserved resources (or sub-resources) among multiple reserved resources (or sub-resources) , Sub-resources) are used for different types of services, then it can also indicate that each of the multiple reserved resources (or sub-resources) is used for multicast services, Broadcast service or unicast service. In this way, the second terminal device can be notified whether the information carried by the reserved resource is sent to one terminal device or multiple terminal devices, and the information notified to the second terminal device can be more abundant.

The first signaling indicates the information of the reserved resource. One way may be that the first signaling includes a first field, and the state of the first field is used to indicate the information of the reserved resource.

The parameters of the first signaling indicate the information of the reserved resources. For example, the parameters of the first signaling may include one of the following or any combination of the following: the resource carrying the first signaling, the size of the first signaling, Or, the RNTI used to scramble the CRC of the first signaling.

Equivalently, the above four methods can be used to indicate the information of reserved resources, and the information of reserved resources can include any combination of one or more of the following: time domain information of reserved resources, reservation The frequency domain information of the resource, the channel corresponding to the reserved resource, the reserved resource is used for multiple transmissions of one transmission block, and the reserved resource is used for single transmission of multiple transmission blocks. Resources are used for initial data transmission or data retransmission, and reserved resources are used for multicast services, broadcast services, or unicast services. When the first terminal device indicates the information of the reserved resource, it can use any combination of one or more of the above four methods. It can be understood that the first terminal device can use the first signaling or the first information. The parameters of the command are used to indicate the information of the reserved resources, and the first signaling and the parameters of the first signaling may also be used to indicate the information of the reserved resources. For example, the information of reserved resources is indicated only by the state of the first field included in the first signaling; or, the information of reserved resources is indicated only by the resource carrying the first signaling; or, the information of the reserved resources is indicated only by the first message. The size of the command indicates the information of the reserved resource; or, only the RNTI used to scramble the CRC of the first signaling indicates the information of the reserved resource; or, the state of the first field included in the first signaling Information indicating the reserved resources, and information indicating the reserved resources through the resources carrying the first signaling; or, indicating the reserved resources through the state of the first field included in the first signaling, and through The size of the first signaling indicates the information of the reserved resource; or, the information of the reserved resource is indicated by the state of the first field included in the first signaling, and the CRC used to scramble the first signaling RNTI indicates information about reserved resources; or, indicates information about reserved resources through the state of the first field included in the first signaling, indicates information about reserved resources through resources that carry the first signaling, and through The size of the first signaling indicates the information of the reserved resource; or, the state of the first field included in the first signaling indicates the information of the reserved resource, and the resource carrying the first signaling indicates the reserved resource The information indicating the reserved resources through the RNTI used to scramble the CRC of the first signaling; or the information indicating the reserved resources through the resource carrying the first signaling, and the size of the first signaling Information indicating the reserved resources, and information indicating the reserved resources through the RNTI used to scramble the CRC of the first signaling; or, including the information indicating the reserved resources through the state of the first field included in the first signaling The resource information, the information indicating the reserved resources through the size of the first signaling, and the information indicating the reserved resources through the RNTI used to scramble the CRC of the first signaling; or, the information included in the first signaling The state of the first field indicates the information of the reserved resource, the resource that carries the first signaling indicates the information of the reserved resource, the size of the first signaling indicates the information of the reserved resource, and the The RNTI scrambling the CRC of the first signaling indicates information about reserved resources. Alternatively, the first terminal device indicates the reserved resource information through the first signaling or the parameters of the first signaling, in addition to at least one of the above methods, it may also include other methods, or, It does not include any of the above methods, but includes other methods. Alternatively, the first terminal device may not indicate the reserved resource information through the first signaling or the parameters of the first signaling, but through other methods. The mode indicates the information of reserved parameters.

The above four methods can be divided into two major categories: explicit indication mode and implicit indication mode, which will be introduced separately below.

1. Explicit instructions.

For example, the information indicating the reserved resources through the state of the first field included in the first signaling can be regarded as an explicit indication manner.

The first signaling may include a first field, and the information of the reserved resource may be indicated by the state of the first field. The first field may occupy one or more bits. The more bits the first field occupies, the more detailed information about the indicated reserved resources may be.

The first field may be a newly added field in the first signaling, and is dedicated to information indicating reserved resources. Alternatively, the first field may also be an existing field in the first signaling, which is equivalent to multiplexing the existing field in the first signaling to indicate information about reserved resources. If the first field is an existing field in the first signaling, then the first field is, for example, an unused field in the first signaling, and all the states of the first field can be used to indicate reserved resources Information. Alternatively, if the first field is an existing field in the first signaling, part of the state of the first field may have been used, and the unused state of the first field may be used to indicate information about reserved resources. The state of the first field mentioned here may refer to the value of the first field, or in other words, a value of the first field corresponds to a state.

For example, for example, the first signaling is SCI, and the SCI contains a 4-bit resource reservation field. The 10 states of the resource reservation field 0001 to 1010 are already occupied, which are used to indicate 1 to 10 time slots Different cycles. Then, the resource reservation field can be used as the first field, and the five states 1011, 1100, 0000, 1101, and 1110 that are not occupied by the resource reservation field are used to indicate the information of the reserved resources. In addition, the resource reservation The state of 1111 in the reserved field continues to be reserved, or the state of 1111 can also be used to indicate information about reserved resources. For example, the explanation of various states of SCI can refer to Table 2:

Table 2

As mentioned above, the reserved resource information may include multiple types. Then, when the state of the first field is used to indicate the reserved resource information, each state can be used to indicate a kind of information about the reserved resource. , Different states can indicate different information of reserved resources, and this indication method is clearer. Alternatively, each of the states can be used to indicate a variety of information about reserved resources, and the amount of information indicated by different states can be the same or different, so different states can indicate different information about reserved resources This method helps to save the state of the first field, or in other words, helps to improve the utilization of the state of the first field. Alternatively, each state in the partial state of the first field may indicate a kind of information about the reserved resource, and each state in the remaining partial states of the first field may indicate a variety of information about the reserved resource, and different The quantity of information indicated by the status can be the same or different, which is more flexible.

Take the five states 1011, 1100, 0000, 1101, and 1110 that are not occupied by the resource reservation field to indicate the information of the reserved resources, and the state of 1111 in the resource reservation field is continued as a reservation as an example. For example, the state of 1011 is used to indicate that the resource reservation period is 0.5 timeslots, the state of 1100 is used to indicate that the resource reservation period is 0.2 timeslots, and the state 0000 is used to indicate the number of times reserved resources are reserved, 1101 This status is used to indicate that the reserved resource is used for multiple transmissions of one transport block, and the status 1110 is used to indicate that there is no other information currently scheduled.

Or, the state 1011 is used to indicate that the resource reservation period is 0.5 timeslots, the time domain offset of the reserved resources is 1 timeslot, and the number of times the reserved resources are reserved is 10 times. The state 1100 is used To indicate that the number of reservations of the reserved resource is 10 times, the time length occupied by one of the reserved resources is 0.5 time slots, and the channel corresponding to the reserved resource is PSSCH, which is in the state of 0000 It is used to indicate that the number of reservations of the reserved resource is 8, the resource reservation period is 0.2 timeslots, the time length occupied by one of the reserved resources is 0.2 timeslots, and the reservation The resources of the have frequency hopping relative to the resources occupied by the currently scheduled information. The status 1101 is used to indicate that the reserved resources are reserved for 6 times, and the size of the reserved resources is relative to the resources occupied by the currently scheduled information. The size of has a scaling factor, and the reserved resources are used for data retransmission. The status of 1110 is used to indicate that the time length occupied by one of the reserved resources is 0.3 timeslots and reserved resources. The time domain offset is 1 time slot, and the reserved resources are used for unicast services.

Of course, the relationship between the above state and the indicated content is just some examples. For which state of the first field is used to indicate what information about the reserved resource, and for a state of the first field, it indicates the reserved resource. There are no specific restrictions on how many kinds of information there are.

In addition, as above, the first signaling is the SCI and the first field is the resource reservation field as an example. In practical applications, the first signaling can also be other signaling, and the first field will be different accordingly. . Or, even if the first signaling is an SCI, the first field can also be other fields in the SCI, and there is no restriction on this.

Of course, the explicit indication method may include other methods besides the methods described above, and the specific method is not limited.

2. Implicit instructions.

The display instruction method is introduced in Article 1, and the implicit instruction method is introduced below. The so-called implicit indication method may be that the indication is not performed through the information carried in the first signaling, but is indicated through other methods. For example, the information of the reserved resource is indicated by the resource carrying the first signaling, the information of the reserved resource is indicated by the size of the first signaling, and the reservation is indicated by the RNTI used to scramble the CRC of the first signaling The three methods can be considered as implicit instructions. That is to say, the manner of indicating the information of the reserved resource through the parameter of the first signaling can be considered as an implicit indicating manner.

As a first optional manner, the information of the reserved resource is indicated by the resource carrying the first signaling. The first terminal device can use different resources when sending the first signaling, so that different resources can be used to indicate different content. Wherein, the first signaling uses a certain resource to send the first signaling, which may indicate a kind of information about reserved resources, or may indicate a variety of information about reserved resources, for information about the indicated reserved resources The number is not limited. For example, if the first terminal device sends the first signaling on resource 1, it indicates that the reserved resource is used for initial data transmission, and if the first terminal device sends the first signaling on resource 2, it indicates the reserved resource It is used for data retransmission and the resource reservation period is 0.2 timeslots. If the first terminal device sends the first signaling on resource 3, it indicates that the resource reservation period is 0.5 timeslots and the reserved resources The time domain offset is 1 time slot, and so on. The above-mentioned relationship between the resource and the indicated content is just some examples, and there is no specific limitation on what information is indicated for the reserved resource when the first signaling is sent through a certain resource.

The resource that carries the first signaling can be described from the perspective of physical resources or from the perspective of logical resources. The physical resources may include at least one of time domain resources, frequency domain resources, code domain resources, space domain resources, or power domain resources. The frequency domain resources, for example, include at least one of the index of a resource block (RB), the number of RBs, the index of a subchannel, or the identification of an RB in the subchannel. The time domain resource, for example, includes at least one of the symbol position (including the start symbol or the end symbol), the number of symbols, the slot position (including the start slot or the end slot), or the number of slots. Code domain resources, for example, include at least one of root sequence, mask, scrambling code, cyclic shift, or comb tooth. The spatial resources, for example, include at least one of a codeword, a stream, a layer, the number of antennas, an antenna port number, or the number of antenna ports. The power domain resources, for example, include at least one of power value, power range, power offset, or power threshold. For example, if at least one of the time domain resources, frequency domain resources, code domain resources, space domain resources, or power domain resources of two resources is different, it is considered that the two resources are different. For example, the time domain resources, frequency domain resources, code domain resources, and space resources of resource 1 and resource 2 are the same, and the power value, power range, and power offset in the power domain resources are the same, but the power thresholds are different, then Think that resource 1 and resource 2 are different.

Logical resources, for example, include at least one of a search space set, a candidate location, or a control resource set. For example, if at least one of the search space sets, candidate positions, or control resource sets of two resources is different, the two resources are considered to be different. For example, if the candidate locations and control resource sets of resource 1 and resource 2 are the same, but the search space sets are different, it is considered that resource 1 and resource 2 are different.

As a second optional manner, the information of reserved resources may be indicated by the size of the first signaling. For example, if the length of the first signaling is different, different contents can be indicated. For example, the length of the first signaling may be divided into multiple intervals according to the first threshold, and each interval may be used to indicate information about reserved resources, and the information about reserved resources indicated by different intervals may be different . For example, if the length of the first signaling is less than the first threshold, it indicates that the resource reservation period is 0.5 time slots; and if the length of the first signaling is equal to the first threshold, it indicates the time domain offset of the reserved resources Two time slots and reserved resources are used for data retransmission; if the length of the first signaling is greater than the first threshold, it indicates that the size of the reserved resources is relative to the size of the resources occupied by the currently scheduled information The scaling factor, the channel corresponding to the reserved resources are PSCCH, and the reserved resources are used for multicast services.

Or, the interval may not be divided, as long as the length of the first signaling is different, different content can be indicated. For example, the length of the first signaling is the first length, indicating that the resource reservation period is 0.2 time slots, and the time domain offset of the reserved resources is 1 time slot; the length of the first signaling is the second length , Indicating that the resource reservation period is 0.5 time slots; the length of the first signaling is the third length, indicating that the size of the reserved resource has not changed relative to the size of the resource occupied by the currently scheduled information, and the reserved resource It is used for broadcasting business, etc.

As a third optional manner, the information of the reserved resources is indicated by the RNTI used to scramble the CRC of the first signaling. Then, if the RNTI used to scramble the CRC of the first signaling is different, different content can be indicated. For example, the RNTI used to scramble the CRC of the first signaling is the first RNTI, and the time domain offset indicating the reserved resources is 1 time slot; the RNTI used to scramble the CRC of the first signaling is the second RNTI indicates that the resource reservation period is 0.2 time slots, and so on. The RNTI used to scramble the CRC of the first signaling may include one or more of the following RNTIs: cell radio network temporary identifier (C-RNTI), and temporary cell radio network temporary identifier ( temporary cell radio network temporary identity (TC-RNTI), configure scheduling radio network temporary identification (configured scheduling RNTI, CS-RNTI), semi-persistent channel state indication wireless network temporary identification (semi-persistent channel state information RNTI, SP-CSI- RNTI), modulation and coding scheme (MCS)-C-RNTI, system information (SI)-RNTI, random access (RA)-RNTI, paging (paging, P) -RNTI, interruption (INT) -RNTI, slot format indicator (SFI) -RNTI, transmit power control physical uplink shared channel RNTI (transmit power control physical uplink shared channel RNTI, TPC-PUSCH-RNTI) , Transmit power control physical uplink control channel RNTI (transmit power control physical uplink control channel RNTI, TPC-PUCCH-RNTI), or transmit power control sounding reference signal RNTI (transmit power control sounding reference signal RNTI, TPC-SRS-RNTI) Wait.

The three implicit indication methods described above can be applied separately. For example, the first terminal device can indicate the reserved resource information through the RNTI used to scramble the CRC of the first signaling, or indicate the size of the first signaling Information about reserved resources. Or, any two or three of the above three implicit indication methods can be applied in combination. For example, the first terminal device indicates the information of the reserved resource through the resource carrying the first signaling, the size of the first signaling, and the RNTI used to scramble the CRC of the first signaling, then, among the three As long as one is different, the information of the indicated reserved resources can be different. For example, the first terminal device sends the first signaling through resource 1, the size of the first signaling is the first value, and the RNTI used to scramble the CRC of the first signaling is the first RNTI, which indicates that the resource reservation period is The time domain offset of 1 time slot and reserved resources is 2 time slots; or, the first terminal device sends the first signaling through resource 2, and the size of the first signaling is the first value, which is used for adding The RNTI that scrambles the CRC of the first signaling is the first RNTI, which indicates that the resource reservation period is 0.5 time slots; or, the first terminal device sends the first signaling through resource 2, and the size of the first signaling is the second Value, the RNTI used to scramble the CRC of the first signaling is the second RNTI, which indicates that the length of time occupied by one of the reserved resources is 0.2 time slots, and the number of times the reserved resources are reserved For 10 times, the reserved resources relative to the resources occupied by the currently scheduled service data include frequency hopping, and reserved resources for data retransmission, and so on.

Of course, the implicit indication method may include other methods besides the ones described above, and the specific method is not limited.

S103. The first terminal device sends the first service data on the reserved resource, and the second terminal device receives the first service data from the first terminal device on the reserved resource, or, The terminal device sends control information on the reserved resource, and the second terminal device receives the control information from the first terminal device on the reserved resource.

The second terminal device may determine the reserved resource information according to the first signaling or the parameters of the first signaling. The method according to which the second terminal device determines the reserved resource information depends on the method used by the first terminal device to indicate the reserved resource information. For example, if the first terminal device indicates the information of the reserved resource through the state of the first field included in the first signaling, the second terminal device determines the reserved resource according to the state of the first field included in the first signaling. Resource information; or, if the first terminal device indicates the reserved resource information through the resource carrying the first signaling and the size of the first signaling, the second terminal device will use the resource carrying the first signaling, and The size of the first signaling determines the information of reserved resources, and so on. The content indicated by the first terminal device is the content that can be determined by the second terminal device.

For example, the first terminal device indicates the information of reserved resources through the state of the first field included in the first signaling. The state of the first field is 1011, indicating that the resource reservation period is 0.5 time slots and the reserved resources The time domain offset of is 1 time slot, and the reserved resources are reserved 10 times. Then, after the second terminal device receives the first signaling, it can determine that the resource reservation period is 0.5 timeslots and the time domain offset of the reserved resources is 1 timeslot according to the state of the first field as 1011, and The reserved resources are reserved 10 times.

Alternatively, the first terminal device indicates the information of the reserved resource through the resource carrying the first signaling and the size of the first signaling, the resource carrying the first signaling is resource 1, and the size of the first signaling is the first signaling. A value indicating that the resource reservation period is 1 time slot and the time domain offset of the reserved resource is 2 time slots. Then the second terminal device receives the first signaling, and based on the resource for receiving the first signaling (the second terminal device receives the first signaling at resource 1) and the size of the first signaling is the first value, the resource pre-determination can be determined. The retention period is 1 time slot, and the time domain offset of the reserved resources is 2 time slots.

The indication method of the first terminal device and the corresponding determination method of the second terminal device may be configured by the network device, or determined through negotiation between the first terminal device and the second terminal device, or specified by an agreement.

In the embodiment of the present application, the first terminal device can indicate the information of the reserved resource through the first signaling or the parameter of the first signaling, and the second terminal device as the receiving end can obtain the information of the reserved resource, so that it can Receive the first service data or control information through the reserved resources at the correct location. Through the method provided by the embodiments of this application, if other information is currently scheduled, the reserved resources may be the same as the period or size of the resources occupied by the currently scheduled information, or may not be the same, as long as the first message is passed. If the parameter of the first signaling indicates the information of the reserved resource, the second terminal device can learn the position of the reserved resource, thereby improving the flexibility of resource reservation.

Consider another scenario. The hybrid automatic repeat request (HARQ) mechanism can be used between the first terminal device and the second terminal device. After the first terminal device sends the first information through the first resource, if the second terminal device responds to the first If the information is successfully received, an acknowledgement (ACK) may be sent to the first terminal device, and if the reception of the first information is unsuccessful, it may be sent to the first terminal device or a negative acknowledgement (NACK). For example, in at least one first resource, the information carried by some of the first resources is the same, and the information may be part of the information included in the first information, or it is also possible that the information carried by at least one first resource is the same , Then each first resource in the at least one first resource carries first information. Then, after the first terminal device sends information through one or more of the first resources (the information may be part of the information included in the first information, or may also be the first information), if it receives information from the second terminal The ACK from the device indicates that the information has been sent successfully, and there is no need to send it again. However, if at least one first resource also includes the first resource reserved for the information, the first terminal device will continue to send the information to the second terminal device through these first resources. For the second terminal device , This is already redundant sending, which also leads to a waste of resources.

In view of this, the embodiment of the present application provides a second communication method. In this communication method, the first terminal device can timely release reserved resources that do not need to be used continuously, thereby reducing resource waste and improving effective utilization of resources.

Please refer to Figure 14 for a flowchart of this method. In the following introduction process, the application of this method to the network architecture shown in FIG. 9 is taken as an example. In addition, the method can be executed by two communication devices, for example, the first communication device and the second communication device. Among them, the first communication device or the second communication device may be a network device or a communication device capable of supporting the network device to implement the functions required by the method, or may be a terminal device or a terminal device capable of supporting the functions required by the terminal device to implement the method. The communication device can of course also be other communication devices, such as a chip system. And there are no restrictions on the implementation of the first communication device or the second communication device. For example, the two communication devices can be implemented in the same form, for example, both can be implemented in the form of equipment, or the two communication devices can also be implemented as Different forms, for example, the first communication device is implemented in the form of a device, the second communication device is implemented in the form of a chip system, and so on. Among them, the network equipment is, for example, a base station.

S141. The first terminal device sends first service data in the first resource, where the first service data includes M data blocks.

The first resource is, for example, a resource reserved by the first terminal device for the first service data.

For example, the first terminal device reserves multiple resources for the first service data, the first resource belongs to the multiple resources, and M is a positive integer. The embodiment of this application can apply the resource reservation mechanism introduced in the embodiment shown in FIG. 10, then after reserving multiple resources, how does the first terminal device notify the information of the multiple resources as the reception of the first service data For the terminal device of the party, refer to the related introduction of the embodiment shown in FIG. 10. Alternatively, the resource reservation mechanism applied in the embodiment of the present application may also be an existing one, and there is no specific limitation.

For example, the recipient of the first service data is the third terminal device, and the first terminal device may send the first service data to the third terminal device through the first resource among the multiple resources. It can be understood that the first resource includes M sub-resources, one sub-resource is used to carry one data block, and the M sub-resources can carry M data blocks. The M data blocks may all be the same or different.

S142. The third terminal device sends N acknowledgements corresponding to N data blocks in the M data blocks to the first terminal device, and the first terminal device receives N data blocks corresponding to the M data blocks. In addition, the second terminal device also receives the N acknowledgements corresponding to the N data blocks in the M data blocks. Or, the third terminal device does not send N negative responses corresponding to N data blocks among the M data blocks to the first terminal device, and the first terminal device does not receive the N negative responses corresponding to the M data blocks. The N negative acknowledgments of the N data blocks, and in addition, the second terminal device has not received the N negative acknowledgments corresponding to the N data blocks of the M data blocks. N is a positive integer, and M is greater than N.

Among them, if the embodiment of this application is applied to a NACK only scenario, the receiving end will only send NACK to the sending end, and if the data is successfully received, the receiving end will not send ACK to the sending end. Therefore, If the third terminal device does not send N NACKs to the first terminal device and the first terminal device does not receive N NACKs from the third terminal device, it indicates that the corresponding N data blocks have been successfully received by the third terminal device.

The first terminal device sent the first service data to the third terminal device through the first resource, and received N ACKs, indicating that the N data blocks sent by the first terminal device were successfully received by the third terminal device. The data block corresponds to N ACKs.

S143. The first terminal device releases a third resource, where the third resource is a resource reserved for the N data blocks, and the third resource does not include the corresponding N data blocks in the first resource. Resource section.

For example, among the multiple resources reserved by the first terminal device for the first service data, in addition to the first resource, other resources may also be included, and the other resources may be located behind the first resource in time. For example, if the first service data is periodic service data, the first terminal device may reserve multiple periods of resources for the first service data, and the first resource is one period of resources. In addition, among the resources of multiple cycles reserved for the first service data, the content carried by the resources of each cycle may be the same. For example, the first resource is used to carry M data blocks and is the first service data. The reserved second resource is also used to carry the same M data blocks, which is equivalent to repeatedly sending the M data blocks multiple times.

After the first terminal device sends M data blocks through the first resource, it has received N ACKs corresponding to N data blocks from the third terminal device, or has not received N data blocks from the third terminal device The N NACKs of the block indicate that the third terminal device has successfully received the N data blocks, so there is no need to continue to send N data blocks to the third terminal device. In this case, the resources used for sending N data blocks included in the multiple resources reserved for the first service data can be released.

Therefore, the first terminal device can release the third resources corresponding to the N data blocks, and the third resources corresponding to the N data blocks may include all or part of the resources reserved for the N data blocks and not yet used. Resources. The third resource may correspond to the resource used to carry N data blocks in the first resource. For example, the third resource and the resource used to carry N data blocks in the first resource are reserved for N data blocks. resource of. That is, the first terminal device reserves the third resource for the N data blocks and the resource used to carry the N data blocks in the first resource. After the first terminal device sends M data blocks through the first resource, N ACKs from the third terminal device are received, or N NACKs from the third terminal device are not received, so the first terminal device does not need to send N data blocks through the third resource and can release the third resource. For MN data blocks (the remaining data blocks except for the N data blocks in the M data blocks), the first terminal device may not receive the MN ACK from the third terminal device, or may have received the MN ACK from the third terminal device. MN NACK of the terminal device, the first terminal device can continue to send MN data blocks on the second resource. The second resource is a resource reserved for MN data blocks, and the second resource does not include the bearer in the first resource. Resources of MN data blocks (because the resources carrying MN data blocks in the first resource have been used).

The third resource corresponding to the N data blocks released by the first terminal device may be the frequency domain resource occupied by the N data blocks of the next reserved period, or it may be a resource mapped by some calculation rules, for example, M The last N or the first N of the resources are released. When the resources released by the first terminal device are detected by other terminal devices, the energy is less than the threshold, so these resources are available resources for other terminal devices. Where the first terminal device releases the third resource, it can be understood that the first terminal device will not use the third resource. Because the first terminal device releases the third resource, but no longer uses the third resource, there may be no further operations. Therefore, the "first terminal device releases the third resource" described in S143 can also be replaced with: the first terminal The device sends MN data blocks on the second resource. The MN data blocks are the remaining data blocks among the M data blocks except for the N data blocks. The second resource is the resource reserved for the MN data blocks, and The second resource does not include the resource part corresponding to the M data blocks in the first resource.

Refer to Figure 15, taking the resources reserved for three cycles to send the first service data as an example. The three parts A, B, and C in Figure 15 represent the reserved resources of these three cycles. These three cycles The reserved resources are reserved for the first service data. For example, A represents the first resource, and the first resource may carry M data blocks. The resource indicated by B may also carry the same M data blocks, and the resource indicated by C may also carry the same M data blocks. For example, after the first terminal device transmits M data blocks through the first resource indicated by A, and receives N ACKs from the third terminal device, the first terminal device can release the resources indicated by B and the resources indicated by C , The resource used to carry N data blocks. Among the resources denoted by B and C, the resources used to carry M-N data blocks may not be released, and the first terminal device may use these resources to continue to send M-N data blocks.

In addition, the third resource corresponds to N data blocks, and N data blocks correspond to N ACKs (or N ACKs that are not received), so the third resource also corresponds to N ACKs (or N ACKs that are not received). NACK) corresponds.

S144. The second terminal device determines that the third resource associated with the N ACKs is an available resource.

The third terminal device sends N ACKs to the first terminal device. These N ACKs may not only be received by the first terminal device, but can also be received by other terminal devices. For example, the second terminal device also received the N ACKs. . Of course, if the third terminal device does not send N NACKs to the first terminal device, neither the first terminal device nor other terminal devices will receive the N NACKs.

For other terminal devices except the first terminal device, for example, the second terminal device, the second terminal device needs to determine which resources are the third resources. The second terminal device determines the third resource associated with N ACKs (or N NACKs that have not been received). One way of determining may be that the second terminal device determines that the resource associated with the fourth resource is the third resource. Resources. A resource that has an association relationship with the fourth resource, that is, a resource that has an association relationship with N ACKs (or N NACKs that are not received). The third resource is the resource reserved for N data blocks. The fourth resource is a resource for the third terminal device to send N ACKs to the first terminal device, the first terminal device receives N ACKs on the fourth resource, and the second terminal device may also receive N ACKs on the fourth resource.

For example, an association relationship between the resource used to carry the ACK and the reserved resource corresponding to the ACK may be established in advance. For example, the association relationship may be stipulated by a protocol or configured by a network device. In this way, when the third terminal device sends an ACK to the first terminal device, it can select a resource associated with the reserved resource (that is, the third resource) corresponding to the ACK to send the ACK, so that the second terminal device is receiving N After an ACK, the corresponding third resource can be determined according to the fourth resource carrying the ACK. Establish an association relationship between the resource used to send the ACK and the released resource (or the reserved resource corresponding to the ACK), so that the third terminal device can determine the preset corresponding to the ACK according to the resource receiving the ACK. The reserved resources are the resources that are determined to be released.

After receiving the N ACKs, the second terminal device can determine that the third resource corresponding to the N ACKs is released. It is equivalent to determining that the third resource is an available resource. Then, when the second terminal device sends service data, it can select part or all of the resources in the third resource for sending.

In addition, the first terminal device sends the first service data to the third terminal device through the first resource. For the N data blocks, the third terminal device feeds back ACK, or does not feed back NACK, and for MN data blocks among them, Data block, the third terminal device may or may not feedback an ACK, that is, the third terminal device has sent MN NACKs to the first terminal device, or it may not have sent MN ACKs to the first terminal device . If the first terminal device receives MN NACKs or does not receive MN ACKs, it knows that MN data blocks have not been successfully received by the third terminal device, then the reserved resources corresponding to the MN data blocks cannot be released, but It is possible to continue to retransmit the MN data blocks through these resources to enhance the coverage of the MN data blocks, thereby maximizing the success rate of receiving the MN data blocks by the third terminal device.

For the second terminal device, if M-N ACKs are not received, no processing may be performed. Or, if M-N NACKs are received, it can be determined that the reserved resources corresponding to the M-N NACKs have not been released, and the second terminal device will not use this part of the resources to reduce the probability of collision.

Among them, S143 can occur before S144, or S143 can occur after S144, or S143 and S144 can also occur simultaneously.

In the embodiment of the present application, the first service data may correspond to one transmission block, and the transmission block includes, for example, M code blocks, then the M code blocks can be considered as the M data blocks, one ACK or one NACK Corresponds to a code block. Or, if the transmission block includes M code block groups, for example, the M code block groups can be regarded as the M data blocks, and one ACK or one NACK corresponds to one code block group.

Alternatively, the first service data may correspond to multiple transmission blocks, and the M transmission blocks may be considered as the M data blocks, and one ACK or one NACK corresponds to one transmission block.

In the embodiment of the present application, after the first terminal device sends the service data, if it receives an ACK, indicating that the sent service data has been successfully received by the receiver, it does not need to continue to send the service data through the reserved resources. A terminal device can release these reserved resources in time, thereby reducing resource waste. And these reserved resources can be continuously used by other terminal devices, which improves the effective utilization of resources.

The device used to implement the foregoing method in the embodiments of the present application will be described below with reference to the accompanying drawings. Therefore, the above content can all be used in the subsequent embodiments, and the repeated content will not be repeated.

FIG. 16 is a schematic block diagram of a communication device 1600 according to an embodiment of the application. Exemplarily, the communication device 1600 is a terminal device 1600, for example.

The terminal device 1600 includes a processing module 1610 and a transceiver module 1620. Exemplarily, the terminal device 1600 may be a terminal device, or may be a chip applied in the terminal device or other combination devices, components, etc. having the above-mentioned terminal device functions. When the terminal device is a terminal device, the transceiver module 1620 may be a transceiver, which may include an antenna and a radio frequency circuit, etc., and the processing module 1610 may be a processor, such as a baseband processor. The baseband processor may include one or more central processing units ( central processing unit, CPU). When the terminal device is a component with the above terminal function, the transceiver module 1620 may be a radio frequency unit, and the processing module 1610 may be a processor, such as a baseband processor. When the terminal device is a chip system, the transceiver module 1620 may be an input/output interface of the chip system (for example, a baseband chip), and the processing module may be a processor of the chip system, and may include one or more central processing units.

Wherein, the processing module 1610 may be used to perform all the operations performed by the first terminal device in the embodiment shown in FIG. 10 except for the transceiving operation, such as S101, and/or other operations used to support the technology described herein. process. The transceiver module 1620 may be used to perform all the transceiver operations performed by the first terminal device in the embodiment shown in FIG. 10, such as S102 and S103, and/or other processes used to support the technology described herein.

The transceiver module 1620 is configured to send first signaling to at least one second terminal device, where the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resource, and the time domain information is used to Indicating the length of time occupied by the reserved resource, and the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource;

The transceiver module 1620 is further configured to send first service data or control information on the reserved resources.

As an optional implementation manner, the processing module 1610 is configured to determine reserved resources.

As an optional implementation manner, the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resources, including: the information of the first field included in the first signaling The status is used to indicate the time domain information and/or frequency domain information of the reserved resource.

As an optional implementation manner, the first signaling is also used to indicate one or any combination of the following information:

The channel corresponding to the reserved resource;

As an optional implementation manner, the time domain information is also used to indicate:

As an optional implementation manner, the first signaling does not include service data scheduling information.

As an optional implementation manner, the first signaling is also used to schedule second service data; the time domain information and/or the frequency domain information of the reserved resources include the following items Or any combination of the following:

As an optional implementation manner, the relative time domain position of the reserved resource is the same as the relative time domain position of the first resource, and the frequency domain position of the reserved resource and the frequency domain of the first resource The location is the same, and the size of the reserved resource and the first resource are the same; or, the relative time domain position of the reserved resource has a first deviation from the relative time domain position of the first resource, and/or , The frequency domain position of the reserved resource has a second deviation from the frequency domain position of the first resource; and the reserved resource and the first resource have the same size;

As an optional implementation manner, the first signaling further carries third information, and the third information is the MCS of the first service data, or the third information is the information of the second service data. The difference between the MCS and the MCS of the first service data.

As an optional implementation manner, the first signaling further carries fourth information, and the fourth information is the scaling factor.

As an optional implementation manner, the second service data is sent through a second resource;

The reserved resource is selected from a third resource, the frequency domain position of the third resource is the same as the frequency domain position of the second resource, and the relative position of the third resource in the time unit is The relative positions of the second resources in the time unit are the same.

As an optional implementation manner, the time domain information is used to indicate the length of time occupied by the reserved resources, specifically:

As an optional implementation manner, the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource, specifically:

As an optional implementation manner, the first signaling is SCI, system message, RRC signaling, or MAC signaling.

Alternatively, the processing module 1610 is configured to determine a parameter of the first signaling according to reserved resources, where the parameter of the first signaling includes at least one of the following parameters: a resource that carries the first signaling, and the first signaling The size of a signaling, or the RNTI used to scramble the CRC of the first signaling;

The transceiver module 1620 is configured to send first signaling to at least one second terminal device. The parameters of the first signaling are used to indicate the time domain information and/or frequency domain information of the reserved resource. Domain information is used to indicate the length of time occupied by the reserved resource, and the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource;

As an optional implementation manner, the parameters of the first signaling are also used to indicate one of the following information or any combination thereof:

The channel corresponding to the reserved resource;

It should be understood that the processing module 1610 in the embodiment of the present application may be implemented by a processor or processor-related circuit components, and the transceiver module 1620 may be implemented by a transceiver or transceiver-related circuit components.

As shown in FIG. 17, an embodiment of the present application also provides a communication device 1700. Illustratively, the communication device 1700 is, for example, a terminal device 1700. Exemplarily, the terminal device 1700 may be a communication device, such as a terminal device, or may also be a chip system or the like. The terminal device 1700 includes a processor 1710, a memory 1720, and a transceiver 1730. The memory 1720 stores instructions or programs, and the processor 1710 is configured to execute instructions or programs stored in the memory 1720. When the instructions or programs stored in the memory 1720 are executed, the processor 1710 is used to perform the operations performed by the processing module 1610 in the foregoing embodiment, and the transceiver 1730 is used to perform the operations performed by the transceiver module 1620 in the foregoing embodiment.

It should be understood that the terminal device 1600 or the terminal device 1700 according to the embodiment of the present application can realize the function of the first terminal device in the embodiment shown in FIG. 10, and the operation of each module in the terminal device 1600 or the terminal device 1700 and/ The or functions are respectively to implement the corresponding process in the embodiment shown in FIG. 10, and for the sake of brevity, details are not described herein again.

FIG. 18 is a schematic block diagram of a communication device 1800 according to an embodiment of the application. Exemplarily, the communication device 1800 is, for example, a terminal device 1800.

The terminal device 1800 includes a processing module 1810 and a transceiver module 1820. Exemplarily, the terminal device 1800 may be a terminal device, or may be a chip applied to the terminal device or other combination devices, components, etc. having the above-mentioned terminal device functions. When the terminal device is a terminal device, the transceiver module 1820 may be a transceiver, which may include an antenna and a radio frequency circuit, and the processing module 1810 may be a processor, such as a baseband processor. The baseband processor may include one or more CPUs. When the terminal device is a component with the above terminal function, the transceiver module 1820 may be a radio frequency unit, and the processing module 1810 may be a processor, such as a baseband processor. When the terminal device is a chip system, the transceiver module 1820 may be an input/output interface of a chip system (such as a baseband chip), and the processing module may be a processor of the chip system, and may include one or more central processing units.

Among them, the processing module 1810 can be used to perform all operations performed by the second terminal device in the embodiment shown in FIG. 10 except for receiving and sending operations, for example, determining the reservation according to the first signaling or the parameters of the first signaling. The operation of the time domain position and/or frequency domain position of the resource, and/or other processes used to support the techniques described herein. The transceiver module 1820 may be used to perform all the transceiver operations performed by the second terminal device in the embodiment shown in FIG. 10, such as S102 and S103, and/or other processes used to support the technology described herein.

The transceiver module 1820 is configured to receive first signaling from a first terminal device, where the first signaling is used to indicate time domain information and/or frequency domain information of reserved resources, and the time domain information includes the The length of time occupied by the reserved resource, where the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource;

The transceiver module 1820 is further configured to receive first service data or control information from the first terminal device on the reserved resources.

As an optional implementation manner, the processing module 1810 is configured to determine the reserved resource according to the first signaling.

As an optional implementation manner, the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resources, including:

The channel corresponding to the reserved resource;

Resource reservation period, where the reserved resources repeat in the time domain at intervals of the resource reservation period; or, the number of reservations, the number of reservations being the reserved resource with the resource reservation The period is the number of times the interval repeats in the time domain.

Alternatively, the transceiver module 1820 is configured to receive first signaling from a first terminal device, and the parameters of the first signaling include at least one of the following parameters: a resource that carries the first signaling, and the first signaling The size of the signaling, or the RNTI used to scramble the CRC of the first signaling, the parameters of the first signaling are used to indicate the time domain information and/or frequency domain information of the reserved resources, and the time Domain information is used to indicate the length of time occupied by the reserved resource, and the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource;

As an optional implementation manner, the processing module 1810 is configured to determine the reserved resources according to the parameters of the first signaling.

The channel corresponding to the reserved resource;

It should be understood that the processing module 1810 in the embodiment of the present application may be implemented by a processor or processor-related circuit components, and the transceiver module 1820 may be implemented by a transceiver or transceiver-related circuit components.

As shown in FIG. 19, an embodiment of the present application also provides a communication device 1900. Illustratively, the communication device 1900 is a terminal device 1900, for example. Exemplarily, the terminal device 1900 may be a communication device, such as a terminal device, or may also be a chip system or the like. The terminal device 1900 includes a processor 1910, a memory 1920, and a transceiver 1930. The memory 1920 stores instructions or programs, and the processor 1910 is configured to execute instructions or programs stored in the memory 1920. When the instructions or programs stored in the memory 1920 are executed, the processor 1910 is used to perform the operations performed by the processing module 1810 in the foregoing embodiment, and the transceiver 1930 is used to perform the operations performed by the transceiver module 1820 in the foregoing embodiment.

It should be understood that the terminal device 1800 or the terminal device 1900 according to the embodiment of the present application can realize the function of the second terminal device in the embodiment shown in FIG. 10, and the operation of each module in the terminal device 1800 or the terminal device 1900 and/ The or functions are respectively to implement the corresponding process in the embodiment shown in FIG. 10, and for the sake of brevity, details are not described herein again.

FIG. 20 is a schematic block diagram of a communication device 2000 according to an embodiment of the application. Illustratively, the communication device 2000 is, for example, a terminal device 2000.

The terminal device 2000 includes a processing module 2010 and a transceiver module 2020. Exemplarily, the terminal device 2000 may be a terminal device, or a chip applied in the terminal device, or other combination devices, components, etc. having the above-mentioned terminal device functions. When the terminal device is a terminal device, the transceiver module 2020 may be a transceiver, which may include an antenna and a radio frequency circuit, etc., and the processing module 2010 may be a processor, such as a baseband processor, which may include one or more CPUs. When the terminal device is a component with the above terminal function, the transceiver module 2020 may be a radio frequency unit, and the processing module 2010 may be a processor, such as a baseband processor. When the terminal device is a chip system, the transceiver module 2020 may be an input/output interface of a chip system (such as a baseband chip), and the processing module may be a processor of the chip system, and may include one or more central processing units.

Wherein, the processing module 2010 may be used to perform all operations other than the transceiving operation performed by the first terminal device in the embodiment shown in FIG. 14, such as S143, and/or other operations used to support the technology described herein. process. The transceiving module 2020 may be used to perform all the transceiving operations performed by the first terminal device in the embodiment shown in FIG. 14, such as S141 and S142, and/or other processes used to support the technology described herein.

The transceiver module 2020 is configured to send first service data in the first resource, where the first service data includes M data blocks;

The transceiver module 2020 is configured to receive an affirmative response to the N data blocks of the M data blocks, or no negative response to the N data blocks of the M data blocks, both M and N A positive integer, and M is greater than or equal to N;

The processing module 2010 is configured to release a third resource, where the third resource is a resource reserved for the N data blocks, and the third resource does not include the corresponding N data blocks in the first resource Resource section.

As an optional implementation manner, the transceiver module 2020 is further configured to send MN data blocks on the second resource, where the MN data blocks are in addition to the N data blocks among the M data blocks For the remaining data blocks, the second resource is a resource reserved for the MN data blocks, and the second resource does not include resource parts corresponding to the M data blocks in the first resource.

As an optional implementation manner, the third resource has an association relationship with the N positive responses.

As an optional implementation manner, the third resource has an association relationship with the N positive responses, including:

As an optional implementation manner, the transceiver module 2020 is further configured to receive M-N negative responses to the M-N data blocks.

As an optional implementation manner, the first service data corresponds to one transmission block, the transmission block includes the M data blocks, and the M data blocks are M code blocks or M code block groups , A positive response or negative response corresponds to a code block or code block group.

As an optional implementation manner, the first service data corresponds to M transmission blocks, the M transmission blocks are the M data blocks, and one positive response or negative response corresponds to one transmission block.

It should be understood that the processing module 2010 in the embodiments of the present application may be implemented by a processor or processor-related circuit components, and the transceiver module 2020 may be implemented by a transceiver or transceiver-related circuit components.

As shown in FIG. 21, an embodiment of the present application also provides a communication device 2100. Illustratively, the communication device 2100 is a terminal device 2100, for example. Exemplarily, the terminal device 2100 may be a communication device, such as a terminal device, or may also be a chip system or the like. The terminal device 2100 includes a processor 2110, a memory 2120, and a transceiver 2130. The memory 2120 stores instructions or programs, and the processor 2110 is configured to execute instructions or programs stored in the memory 2120. When the instructions or programs stored in the memory 2120 are executed, the processor 2110 is configured to execute the operations performed by the processing module 2010 in the foregoing embodiment, and the transceiver 2130 is configured to execute the operations performed by the transceiver module 2020 in the foregoing embodiment.

It should be understood that the terminal device 2000 or the terminal device 2100 according to the embodiment of the present application can realize the function of the first terminal device in the embodiment shown in FIG. 14, and the operation of each module in the terminal device 2000 or the terminal device 2100 and/ The or functions are respectively to implement the corresponding process in the embodiment shown in FIG. 14, and for the sake of brevity, details are not repeated here.

FIG. 22 is a schematic block diagram of a communication device 2200 according to an embodiment of the application. Illustratively, the communication device 2200 is, for example, a terminal device 2200.

The terminal device 2200 includes a processing module 2210 and a transceiver module 2220. Exemplarily, the terminal device 2000 may be a terminal device, or a chip applied in the terminal device, or other combination devices, components, etc. having the above-mentioned terminal device functions. When the terminal device is a terminal device, the transceiver module 2220 may be a transceiver, which may include an antenna and a radio frequency circuit, and the processing module 2210 may be a processor, such as a baseband processor, which may include one or more CPUs. When the terminal device is a component with the aforementioned terminal functions, the transceiver module 2220 may be a radio frequency unit, and the processing module 2210 may be a processor, such as a baseband processor. When the terminal device is a chip system, the transceiver module 2220 may be an input/output interface of a chip system (such as a baseband chip), and the processing module may be a processor of the chip system, and may include one or more central processing units.

Wherein, the processing module 2210 may be used to perform all operations other than the transceiving operation performed by the second terminal device in the embodiment shown in FIG. 14, such as S144, and/or other operations used to support the technology described herein. process. The transceiving module 2220 may be used to perform all transceiving operations performed by the second terminal device in the embodiment shown in FIG. 14, such as S142, and/or other processes used to support the technology described herein.

The transceiver module 2220 is configured to receive N positive responses from a third terminal device, where the N positive responses correspond to N data blocks in the first service data from the first terminal device received by the third terminal device , N is a positive integer;

The processing module 2210 is configured to determine that the third resource associated with the N acknowledgements is an available resource.

As an optional implementation manner, the third resource is a resource reserved for the N data blocks.

As an optional implementation manner, the processing module 2210 is further configured to occupy the third resource to send the second service data through the transceiver module 2220.

As an optional implementation manner, the processing module 2210 is configured to determine that the third resource associated with the N positive responses is an available resource in the following manner:

As an optional implementation manner, the first service data corresponds to one transmission block, the transmission block includes M code blocks or code block groups, and one positive response or negative response corresponds to one code block or code block group, The N data blocks are N code blocks included in the M code blocks, or the N data blocks are N code block groups included in the M code block groups, and M is greater than N.

As an optional implementation manner, the first service data corresponds to M transmission blocks, the N data blocks are N transmission blocks included in the M transmission blocks, and one positive response or negative response corresponds to one Transmission block.

It should be understood that the processing module 2210 in the embodiment of the present application may be implemented by a processor or processor-related circuit components, and the transceiver module 2220 may be implemented by a transceiver or transceiver-related circuit components.

As shown in FIG. 23, an embodiment of the present application also provides a communication device 2300. Illustratively, the communication device 2300 is, for example, a terminal device 2300. Exemplarily, the terminal device 2300 may be a communication device, such as a terminal device, or may also be a chip system or the like. The terminal device 2300 includes a processor 2310, a memory 2320, and a transceiver 2330. The memory 2320 stores instructions or programs, and the processor 2310 is configured to execute instructions or programs stored in the memory 2120. When the instructions or programs stored in the memory 2320 are executed, the processor 2310 is used to perform the operations performed by the processing module 2210 in the foregoing embodiment, and the transceiver 2330 is used to perform the operations performed by the transceiver module 2220 in the foregoing embodiment.

It should be understood that the terminal device 2200 or the terminal device 2300 according to the embodiment of the present application can realize the function of the second terminal device in the embodiment shown in FIG. 14, and the operation and/or operation of each module in the terminal device 2200 or the terminal device 2300 The or functions are respectively to implement the corresponding process in the embodiment shown in FIG. 14, and for the sake of brevity, details are not repeated here.

The embodiment of the present application also provides a communication device, which may be a terminal device or a circuit. The communication apparatus can be used to perform actions performed by the first terminal device or the second terminal device in the method embodiment shown in FIG. 10, or perform actions performed by the first terminal device or the first terminal device in the method embodiment shown in FIG. Action performed by the second terminal device.

When the communication device is a terminal device, FIG. 24 shows a simplified structural diagram of the terminal device. As shown in Figure 24, the terminal equipment includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device. The processor is mainly used to process the communication protocol and communication data, and to control the terminal device, execute the software program, and process the data of the software program. The memory is mainly used to store software programs and data. The radio frequency circuit is mainly used for the conversion of baseband signal and radio frequency signal and the processing of radio frequency signal. The antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal devices may not have input and output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data. For ease of description, only one memory and processor are shown in FIG. 24. In actual terminal equipment products, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or storage device. The memory may be set independently of the processor, or may be integrated with the processor, which is not limited in the embodiment of the present application.

In the embodiments of the present application, the antenna and radio frequency circuit with the transceiving function can be regarded as the transceiving unit of the terminal device, and the processor with the processing function can be regarded as the processing unit of the terminal device. As shown in FIG. 24, the terminal device includes a transceiver unit 2410 and a processing unit 2420. The transceiver unit may also be referred to as a transceiver, a transceiver, a transceiver, and so on. The processing unit may also be called a processor, a processing board, a processing module, a processing device, and so on. Optionally, the device for implementing the receiving function in the transceiver unit 2410 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiver unit 2410 can be regarded as the sending unit, that is, the transceiver unit 2410 includes a receiving unit and a sending unit. The transceiver unit may sometimes be called a transceiver, a transceiver, or a transceiver circuit. The receiving unit may sometimes be called a receiver, receiver, or receiving circuit. The transmitting unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit.

It should be understood that the transceiving unit 2410 is used to perform the sending and receiving operations on the first terminal device side in the method embodiment shown in FIG. 10, and the processing unit 2420 is used to perform the first terminal device in the method embodiment shown in FIG. Other operations on the device side except for sending and receiving operations.

For example, in an implementation manner, the transceiving unit 2410 is configured to perform all the transceiving steps on the first terminal device side in the embodiment shown in FIG. 10, such as S102 and S103. The processing unit 2420 is configured to perform other operations on the side of the first terminal device in the embodiment shown in FIG. 10 except for the receiving and sending operations, such as S101, and/or other processes for supporting the technology described herein.

Alternatively, the transceiving unit 2410 is configured to execute the sending operation and receiving operation on the second terminal device side in the method embodiment shown in FIG. 10, and the processing unit 2420 is configured to execute the second terminal device in the method embodiment shown in FIG. Other operations besides sending and receiving operations.

For example, in an implementation manner, the transceiving unit 2410 is configured to perform all the transceiving steps on the second terminal device side in the embodiment shown in FIG. 10, such as S102 and S103. The processing unit 2420 is configured to perform other operations on the side of the second terminal device in the embodiment shown in FIG. 10 except for the receiving and sending operations, for example, when determining the reserved resources according to the first signaling or the parameters of the first signaling Domain location and/or frequency domain location operations, and/or other processes used to support the techniques described herein.

Alternatively, the transceiving unit 2410 is configured to execute the sending operation and receiving operation on the first terminal device side in the method embodiment shown in FIG. 14, and the processing unit 2420 is configured to execute the first terminal device in the method embodiment shown in FIG. Other operations besides sending and receiving operations.

For example, in an implementation manner, the transceiving unit 2410 is configured to perform all the transceiving steps on the first terminal device side in the embodiment shown in FIG. 14, such as S141 and S142. The processing unit 2420 is configured to perform other operations on the side of the first terminal device in the embodiment shown in FIG. 14 besides the transceiving operation, such as S143, and/or other processes for supporting the technology described herein.

Alternatively, the transceiving unit 2410 is configured to perform the sending and receiving operations on the second terminal device side in the method embodiment shown in FIG. 14, and the processing unit 2420 is configured to perform the second terminal device in the method embodiment shown in FIG. Other operations besides sending and receiving operations.

For example, in an implementation manner, the transceiving unit 2410 is configured to perform all the transceiving steps on the second terminal device side in the embodiment shown in FIG. 14, such as S142. The processing unit 2420 is configured to perform other operations on the side of the second terminal device in the embodiment shown in FIG. 14 except for the receiving and sending operations, such as S144, and/or other processes for supporting the technology described herein.

When the communication device is a chip, the chip includes a transceiver unit and a processing unit. Among them, the transceiver unit may be an input/output circuit or a communication interface; the processing unit is a processor or microprocessor or integrated circuit integrated on the chip.

When the communication device in the embodiment of the present application is a terminal device, the device shown in FIG. 25 may be referred to. As an example, the device can perform functions similar to the processor 2510 in FIG. 25. In FIG. 9, the device includes a processor 2510, a data sending processor 2520, and a data receiving processor 2530. The processing module 1610 in the foregoing embodiment may be the processor 2510 in FIG. 25 and complete corresponding functions; the transceiver module 1620 in the foregoing embodiment may be the sending data processor 2520 in FIG. 25, and/or receiving data The processor 2530. Alternatively, the processing module 1810 in the foregoing embodiment may be the processor 2510 in FIG. 25 and perform corresponding functions; the transceiver module 1820 in the foregoing embodiment may be the data sending processor 2520 in FIG. 25, and/or Receive data processor 2530. Alternatively, the processing module 2010 in the foregoing embodiment may be the processor 2510 in FIG. 25 and complete corresponding functions; the transceiver module 2020 in the foregoing embodiment may be the sending data processor 2520 in FIG. 25, and/or Receive data processor 2530. Alternatively, the processing module 2210 in the foregoing embodiment may be the processor 2510 in FIG. 25 and complete corresponding functions; the transceiver module 2220 in the foregoing embodiment may be the sending data processor 2520 in FIG. 25, and/or Receive data processor 2530.

Although the channel encoder and the channel decoder are shown in FIG. 25, it can be understood that these modules do not constitute a restrictive description of this embodiment, and are only illustrative.

Fig. 26 shows another form of this embodiment. The processing device 2600 includes modules such as a modulation subsystem, a central processing subsystem, and a peripheral subsystem. The communication device in this embodiment can be used as a modulation subsystem therein. Specifically, the modulation subsystem may include a processor 2603 and an interface 2604. Among them, the processor 2603 completes the function of the aforementioned processing module 1610, and the interface 2604 completes the function of the aforementioned transceiver module 1620. Alternatively, the processor 2603 completes the function of the aforementioned processing module 1810, and the interface 2604 completes the function of the aforementioned transceiver module 1820. Alternatively, the processor 2603 completes the function of the aforementioned processing module 2010, and the interface 2604 completes the function of the aforementioned transceiver module 2020. Alternatively, the processor 2603 completes the function of the aforementioned processing module 2210, and the interface 2604 completes the function of the aforementioned transceiver module 2220. As another variation, the modulation subsystem includes a memory 2606, a processor 2603, and a program stored on the memory 2606 and running on the processor. The processor 2603 executes the program to implement the method shown in FIG. 10 In the example, the method on the first terminal device side or the second terminal device side, or the method on the first terminal device side or the second terminal device side in the method embodiment shown in FIG. 14 is implemented when the program is executed. It should be noted that the memory 2606 can be non-volatile or volatile, and its location can be located inside the modulation subsystem or in the processing device 2600, as long as the memory 2606 can be connected to the The processor 2603 is fine.

The embodiment of the present application also provides a first communication system. The communication system may include the first terminal device involved in the embodiment shown in FIG. 10 and the second terminal device involved in the embodiment shown in FIG. 10 described above. The first terminal device is, for example, the terminal device 1600 in FIG. 16 or the terminal device 1700 in FIG. 17, and the second terminal device is, for example, the terminal device 1800 in FIG. 18 or the terminal device 1900 in FIG. 5. For example, the first terminal device may be used to perform all operations performed by the first terminal device in the embodiment shown in FIG. 10, such as S101 to S103 in the embodiment shown in FIG. 10, and/or used to support the Other processes of the described technology. The second terminal device can be used to perform all operations performed by the second terminal device in the embodiment shown in FIG. 10, such as S102 and S103 in the embodiment shown in FIG. 10, according to the first signaling or the first signaling The parameters determine the operation of the time domain position and/or frequency domain position of the reserved resource, and/or other processes used to support the techniques described herein.

The embodiment of the present application also provides a second communication system. The communication system may include the first terminal device involved in the embodiment shown in FIG. 14 and the second terminal device involved in the embodiment shown in FIG. 14 described above. The first terminal device is, for example, the terminal device 2000 in FIG. 20 or the terminal device 2100 in FIG. 21, and the second terminal device is, for example, the terminal device 2200 in FIG. 22 or the terminal device 2300 in FIG. 23. For example, the first terminal device can be used to perform all operations performed by the first terminal device in the embodiment shown in FIG. 14, such as S141 to S143 in the embodiment shown in FIG. 14, and/or used to support the Other processes of the described technology. The second terminal device can be used to perform all operations performed by the second terminal device in the embodiment shown in FIG. 14, such as S142 and S144 in the embodiment shown in FIG. 14, and/or used to support the operations described herein Other processes of technology.

The first communication system and the second communication system may be the same communication system, or may also be different communication systems.

The embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, it can realize that the embodiment shown in FIG. 10 provided by the foregoing method embodiment is related to the first terminal device. The process.

The embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, it can realize that the embodiment shown in FIG. 10 provided by the above method embodiment is related to the second terminal device. The process.

The embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, it can realize that the embodiment shown in FIG. 14 provided by the foregoing method embodiment is related to the first terminal device. The process.

The embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, it can realize that the embodiment shown in FIG. 14 provided by the foregoing method embodiment is related to the second terminal device. The process.

The embodiment of the present application also provides a computer program product containing instructions, which when executed, execute the method on the first terminal device side in the method embodiment shown in FIG. 10.

The embodiment of the present application also provides a computer program product containing instructions, which when executed, execute the method on the second terminal device side in the method embodiment shown in FIG. 10.

The embodiment of the present application also provides a computer program product containing instructions, which when executed, execute the method on the first terminal device side in the method embodiment shown in FIG. 14.

The embodiment of the present application also provides a computer program product containing instructions, which when executed, execute the method on the second terminal device side in the method embodiment shown in FIG. 14.

It should be understood that the processor mentioned in the embodiments of this application may be a CPU, other general-purpose processors, digital signal processors (digital signal processors, DSP), application specific integrated circuits (ASICs), ready-made Field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.

It should also be understood that the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electronic Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM) ) And direct memory bus random access memory (direct rambus RAM, DR RAM).

It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, the memory (storage module) is integrated in the processor.

It should be noted that the memories described herein are intended to include, but are not limited to, these and any other suitable types of memories.

It should be understood that, in the various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, rather than corresponding to the embodiments of the present application. The implementation process constitutes any limitation.

A person of ordinary skill in the art may be aware that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the above-described system, device, and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, the functional units in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program code .

The above are only specific implementations of the application, but the scope of protection of the embodiments of the application is not limited thereto. Any person skilled in the art can easily think of changes within the technical scope disclosed in the embodiments of the application. Or replacement should be covered within the scope of protection of this application. Therefore, the protection scope of the embodiments of the present application shall be subject to the protection scope of the claims.

Claims

A communication method, characterized in that it comprises:

The first terminal device sends first signaling to at least one second terminal device, where the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resources, and the time domain information is used to indicate all The length of time occupied by the reserved resource, and the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource;

The first terminal device sends first service data or control information on the reserved resource.
The method according to claim 1, wherein the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resource, and comprises:

The state of the first field of the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resource.
The method according to claim 1 or 2, wherein the first signaling is further used to indicate one or any combination of the following information:

The channel corresponding to the reserved resource;

The reserved resources are used for multiple transmissions of one transmission block;

The reserved resource is used for a single transmission of multiple transmission blocks;

The reserved resources are used for initial data transmission or data retransmission; or,

The reserved resources are used for multicast services, broadcast services or unicast services.
A communication method, characterized in that it comprises:

The first terminal device determines the parameters of the first signaling according to the reserved resources, and the parameters of the first signaling include at least one of the following parameters: resources that carry the first signaling, Size, or RNTI used to scramble the CRC of the first signaling;

The first terminal device sends first signaling to at least one second terminal device, and a parameter of the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resource, and the time Domain information is used to indicate the length of time occupied by the reserved resource, and the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource;

The first terminal device sends first service data or control information on the reserved resource.
The method according to claim 4, wherein the parameter of the first signaling is further used to indicate one of the following information or any combination thereof:

The channel corresponding to the reserved resource;

The reserved resources are used for multiple transmissions of one transmission block;

The reserved resource is used for a single transmission of multiple transmission blocks;

The reserved resources are used for initial data transmission or data retransmission; or,

The reserved resources are used for multicast services, broadcast services or unicast services.
The method according to any one of claims 1 to 5, wherein the time domain information is further used to indicate:

Time domain offset, where the time domain offset is the time interval between the time point when the first signaling is sent to the start time point of the reserved resource.
The method according to any one of claims 1 to 6, wherein the time domain information is further used to indicate:

A resource reservation period, where the reserved resources repeat in the time domain at intervals of the resource reservation period; and/or,

The number of reservations, where the number of reservations is the number of times the reserved resource is repeated in the time domain with the resource reservation period as an interval.
The method according to any one of claims 1 to 7, wherein the first signaling does not include scheduling information of service data.
The method according to any one of claims 1 to 7, wherein the first signaling is also used to schedule second service data; the time domain information of the reserved resources and/or the Frequency domain information, including one of the following or any combination of the following:

The reserved resource has frequency hopping or no frequency hopping relative to the resource occupied by the second service data;

The position of the reserved resource has an offset relative to the position of the resource occupied by the second service data, or there is no offset; or,

The size of the reserved resource has a scaling factor or no change relative to the size of the resource occupied by the second service data.
The method according to claim 9, wherein:

The relative time domain position of the reserved resource is the same as the relative time domain position of the first resource, the frequency domain position of the reserved resource is the same as the frequency domain position of the first resource, and the reserved resource The size of the resource and the first resource are the same; or,

The relative time domain position of the reserved resource has a first deviation from the relative time domain position of the first resource, and/or the frequency domain position of the reserved resource and the frequency domain position of the first resource have a A second deviation; and, the size of the reserved resource and the first resource are the same;

Wherein, the first resource is the resource occupied by the second service data, the relative time domain position of the first resource is the relative position of the time domain position of the first resource in a time unit, and the second resource The relative time domain position of the resource is the relative position in the time unit of the time domain position of the second resource.
The method of claim 10, wherein:

The first signaling also carries third information, and the third information is the MCS of the first service data, or the third information is the MCS of the second service data and the MCS of the first service data. The difference between MCS.
The method according to claim 9 or 10, wherein:

The first signaling also carries fourth information, and the fourth information is the scaling factor.
The method according to claim 9 or 10, wherein the second service data is sent through a second resource;

The reserved resource is selected from a third resource, the frequency domain position of the third resource is the same as the frequency domain position of the second resource, and the relative position of the third resource in the time unit is The relative positions of the second resources in the time unit are the same.
The method according to any one of claims 1 to 13, wherein the time domain information is used to indicate the length of time occupied by the reserved resources, specifically:

The time domain information includes the time domain start position and time length of the reserved resource, or includes the time domain start position and time domain end position of the reserved resource.
The method according to any one of claims 1 to 14, wherein the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource, specifically:

The frequency domain information includes the frequency domain start position and frequency domain bandwidth of the reserved resource, or includes the frequency domain start position and end position of the reserved resource.
The method according to any one of claims 1 to 15, wherein the first signaling is SCI, system message, RRC signaling, or MAC signaling.
A terminal device, characterized in that it comprises:

The transceiver module is configured to send first signaling to at least one second terminal device, where the first signaling is used to indicate time domain information and/or frequency domain information of reserved resources, and the time domain information is used to indicate The length of time occupied by the reserved resource, and the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource;

The transceiver module is also configured to send first service data or control information on the reserved resources.
The terminal device according to claim 17, wherein the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resource, and comprises:

The state of the first field of the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resource.
The terminal device according to claim 17 or 18, wherein the first signaling is also used to indicate one or any combination of the following information:

The channel corresponding to the reserved resource;

The reserved resources are used for multiple transmissions of one transmission block;

The reserved resource is used for a single transmission of multiple transmission blocks;

The reserved resources are used for initial data transmission or data retransmission; or,

The reserved resources are used for multicast services, broadcast services or unicast services.
A terminal device, characterized in that it comprises:

The processing module is configured to determine the parameters of the first signaling according to the reserved resources, and the parameters of the first signaling include at least one of the following parameters: the resource carrying the first signaling, the first signaling Or the RNTI used to scramble the CRC of the first signaling;

The transceiver module is configured to send first signaling to at least one second terminal device, and a parameter of the first signaling is used to indicate time domain information and/or frequency domain information of the reserved resource, and the time domain Information is used to indicate the length of time occupied by the reserved resource, and the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource;

The transceiver module is also configured to send first service data or control information on the reserved resources.
The terminal device according to claim 20, wherein the parameters of the first signaling are further used to indicate one of the following information or any combination thereof:

The channel corresponding to the reserved resource;

The reserved resources are used for multiple transmissions of one transmission block;

The reserved resource is used for a single transmission of multiple transmission blocks;

The reserved resources are used for initial data transmission or data retransmission; or,

The reserved resources are used for multicast services, broadcast services or unicast services.
The terminal device according to any one of claims 17 to 21, wherein the time domain information is further used to indicate:

Time domain offset, where the time domain offset is the time interval between the time point when the first signaling is sent to the start time point of the reserved resource.
The terminal device according to any one of claims 17-22, wherein the time domain information is further used to indicate:

A resource reservation period, where the reserved resources repeat in the time domain at intervals of the resource reservation period; and/or,

The number of reservations, where the number of reservations is the number of times the reserved resource is repeated in the time domain with the resource reservation period as an interval.
The terminal device according to any one of claims 17 to 23, wherein the first signaling does not include scheduling information of service data.
The terminal device according to any one of claims 17 to 23, wherein the first signaling is also used to schedule second service data; the time domain information and/or the time domain information of the reserved resources The frequency domain information includes one of the following or any combination of the following:

The reserved resource has frequency hopping or no frequency hopping relative to the resource occupied by the second service data;

The position of the reserved resource has an offset relative to the position of the resource occupied by the second service data, or there is no offset; or,

The size of the reserved resource has a scaling factor or no change relative to the size of the resource occupied by the second service data.
The terminal device according to claim 25, wherein:

The relative time domain position of the reserved resource is the same as the relative time domain position of the first resource, the frequency domain position of the reserved resource is the same as the frequency domain position of the first resource, and the reserved resource The size of the resource and the first resource are the same; or,

The relative time domain position of the reserved resource has a first deviation from the relative time domain position of the first resource, and/or the frequency domain position of the reserved resource and the frequency domain position of the first resource have a A second deviation; and, the size of the reserved resource and the first resource are the same;

Wherein, the first resource is the resource occupied by the second service data, the relative time domain position of the first resource is the relative position of the time domain position of the first resource in a time unit, and the second resource The relative time domain position of the resource is the relative position in the time unit of the time domain position of the second resource.
The terminal device according to claim 26, wherein:

The first signaling also carries third information, and the third information is the MCS of the first service data, or the third information is the MCS of the second service data and the MCS of the first service data. The difference between MCS.
The terminal device according to claim 25 or 26, wherein:

The first signaling also carries fourth information, and the fourth information is the scaling factor.
The terminal device according to claim 25 or 26, wherein the second service data is sent through a second resource;

The reserved resource is selected from a third resource, the frequency domain position of the third resource is the same as the frequency domain position of the second resource, and the relative position of the third resource in the time unit is The relative positions of the second resources in the time unit are the same.
The terminal device according to any one of claims 17-29, wherein the time domain information is used to indicate the length of time occupied by the reserved resource, specifically:

The time domain information includes the time domain start position and time length of the reserved resource, or includes the time domain start position and time domain end position of the reserved resource.
The terminal device according to any one of claims 17 to 30, wherein the frequency domain information is used to indicate the frequency domain bandwidth of the reserved resource, specifically:

The frequency domain information includes the frequency domain start position and frequency domain bandwidth of the reserved resource, or includes the frequency domain start position and end position of the reserved resource.
The terminal device according to any one of claims 17 to 31, wherein the first signaling is SCI, system message, RRC signaling, or MAC signaling.
A computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program runs on a computer, the computer executes any one of claims 1-16 The method described.
A communication device, characterized in that the communication device includes:

Memory: used to store instructions;

The processor is configured to call and run the instructions from the memory, so that the communication device is installed to implement the method according to any one of claims 1-16.
A computer program product, characterized in that the computer program product comprises a computer program, and when the computer program is run on a computer, the computer is caused to execute the method according to any one of claims 1-16.