WO2023246745A1

WO2023246745A1 - Communication method and apparatus

Info

Publication number: WO2023246745A1
Application number: PCT/CN2023/101286
Authority: WO
Inventors: 吴越; 何泓利; 王碧钗; 李雪茹
Original assignee: 华为技术有限公司
Priority date: 2022-06-25
Filing date: 2023-06-20
Publication date: 2023-12-28
Also published as: CN117354950A

Abstract

The present application relates to a communication method and apparatus. The method comprises: a sending device sending first sidelink control information and first service data to a first receiving device at a first resource unit, wherein the first sidelink control information is associated with the first service data; and the sending device sending second sidelink control information and second service data to a second receiving device at the first resource unit, wherein the second sidelink control information is associated with the second service data, the priority of the second service data is higher than that of the first service data, and the resource position of the second sidelink control information is indicated by the first sidelink control information or indicated by resource pool configuration information. By means of the technical solution provided in the embodiments of the present application, a sending device can preempt the resources, which are originally allocated to first service data, in a first resource unit to send second service data, such that the second service data can be transmitted in a timely manner, thereby reducing a transmission time delay.

Description

A communication method and device

Cross-references to related applications

This application claims the priority of a Chinese patent application submitted to the State Intellectual Property Office of China on June 25, 2022, with application number 202210731695.5 and the application name "A Sidelink physical layer preemption method", the entire content of which is incorporated herein by reference. Pending application; this application claims priority for a Chinese patent application filed with the State Intellectual Property Office of China on August 8, 2022, with application number 202210943310.1 and application title "A communication method and device", the entire content of which is incorporated by reference. in this application.

Technical field

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

Background technique

Currently, during the communication process, the following scenario may occur: Device A has scheduled downlink transmission of time slot 1 for device B. During the transmission from device A to device B, the service data of device C reaches device A. At this time, device A has no schedulable resources for sending service data to device C. It can only wait until the data transmission of device B is completed before sending service data to device C. For example, it may be in the next time slot of time slot 1. Send service data to device C. The service data of device C may be delay-sensitive service data. Since the service data cannot be sent to device C in time, the transmission delay of the service data is large and cannot meet the needs of delay-sensitive services.

Contents of the invention

Embodiments of the present application provide a communication method and device for reducing data transmission delay.

A first aspect provides a first communication method, which method can be executed by a sending device, or by other devices including the function of the sending device, or by a chip system (or chip) or other functional module, the chip system or functional module The function of the sending device can be realized, and the chip system or functional module is, for example, provided in the sending device. The sending device is, for example, a terminal device. The method includes: sending first sideline control information and first service data to a first receiving device in a first resource unit, wherein the first sideline control information is associated with the first service data; in the first The resource unit sends second sideline control information and second service data to the second receiving device, the second sideline control information is associated with the second service data, and the priority of the second service data is higher than that of the second service data. A priority of service data, the resource location of the second sideline control information is indicated by the first sideline control information, or indicated by the resource pool configuration information.

In the embodiment of this application, the sending device can send the first service data and the second service data in the first resource unit. For example, the priority of the second service data is higher than the priority of the first service data, which is equivalent to the sending device can seize the first service data. The resources originally allocated to the first service data in a resource unit are used to send the second service data, so that the second service data can be transmitted in time and the transmission delay is reduced. In addition, the resource location of the second sideline control information may be indicated by the first sideline control information, or may be indicated by the resource pool configuration information, so that both the sending device and the receiving device can determine the resource location of the second sideline control information, to receive the second sideline control information at the correct resource location.

In an optional implementation, sending the second sideline control information and the second service data in the first resource unit includes: after sending the first sideline control information and the first service data , sending the second sideline control information and the second service data in the first resource unit. The sending device may seize part of the resources of the first service data when the first service data is already in the transmission state. Therefore, the sending device may use the preempted resources to send the second service data after sending the first sideline control information and the second service data. business data.

In an optional implementation, the second sideline control information includes first indication information, or the first sideline control information includes first indication information, wherein the first indication information is used to Indicate that some sub-resource units of the first resource unit are not used for transmission to the first receiving device. The sending device seizes some sub-resource units in the first resource unit to send the second service data. The first receiving device (the target receiving device of the first service data) may not know that some resources in the first resource unit have been preempted, which may cause some behaviors of the first receiving device to go wrong. Optionally, in this embodiment of the present application, the sending device may send first indication information, and the first indication information may indicate that some sub-resource units in the first resource unit are not used for transmission to the first receiving device, or the first indication information It may be indicated that the transmission of the first service data is interrupted, so that the first receiving device can clarify that some sub-resource units in the first resource unit are not used for transmission to the first receiving device according to the first indication information.

In an optional implementation, the first indication information included in the first side row control information includes one or more of the following: The starting time domain location information of the second service data in the first resource unit, the starting time domain location information of the second sideline control information, the identification of the first receiving device, or the The identifier of the second receiving device. The first indication information may indicate that resources are preempted by indicating the time domain resource location and/or the identification of the corresponding receiving device, and the indication method is relatively flexible.

In an optional implementation, the method further includes: sending third sideline control information and third service data in the second resource unit, where the third service data includes the first service data, and the The third side row control information is associated with the third service data. The third side row control information includes first indication information. The first indication information is used to indicate that some sub-resource units of the first resource unit are not used for Transmitted to the first receiving device, the second resource unit is located after the end of the first resource unit in the time domain. The sending device can indicate which resources have been preempted after the first resource unit ends. The third sideline control information is, for example, the sideline control information normally sent in the second resource unit. Then the first receiving device can follow the normal detection mechanism. When the third sideline control information is detected, there is no need to increase the detection process of the first receiving device, which is beneficial to saving power consumption of the first receiving device.

In an optional implementation, the first indication information includes starting time domain location information of the second service data in the first resource unit, and/or the second sidelink control information The starting time domain position information. The first indication information included in the third sideline control information may include (or indicate) the starting time domain position of the second service data and/or the second sideline control information, thereby enabling the first receiving device to determine exactly what is happening. What resources are being seized.

In an optional implementation, the resource pool configuration information is used to indicate at least one candidate resource, and the at least one candidate resource is used to send the second service data. The second sidelink control information is located in The resource belongs to the at least one candidate resource. The first receiving device and/or the second receiving device can detect the sidelink control information on the candidate resources, thereby eliminating the need to blindly detect the sidelink control information on too many resources, which is beneficial to saving power consumption of the receiving device.

In an optional implementation, the first resource unit includes a first sub-resource unit to an M-th sub-resource unit, where M is a positive integer, and the first sub-resource unit and the second sub-resource unit The contents of the units are repeated, and the starting time domain position of the second service data and/or the second sideline control information is located in the next sub-resource unit after the end of the first service data. It can be understood that only one AGC symbol is carried in the first resource unit, which can leave more resources to carry service data, which is beneficial to reducing the transmission delay of service data.

In an optional implementation manner, the transmission power of the first service data and the transmission power of the second service data are both the larger value of the first power and the second power, wherein the first The power is determined based on one or more of the path loss corresponding to the first receiving device, the priority of the first service data, or the path loss corresponding to the sending device, and the second power is determined based on the path loss corresponding to the first receiving device. One or more of the path loss corresponding to the second receiving device, the priority of the second service data, or the path loss corresponding to the sending device. For example, the sending device may adopt a unified power control method for the first service data and the second service data. In order to meet the transmission requirements of the two types of service data, larger power can be used to send the first service data and the second service data to improve the success rate of sending the service data.

In an optional implementation manner, the transmission power of the first service data and the transmission power of the second service data both satisfy the following relationship: P=min(max(P1′,P2′),P1″, P2″). Wherein, P represents the transmission power, P1′ represents the first power, and P2′ represents the second power. The first power is the transmission power corresponding to the first receiving device, and the second power is the transmission power corresponding to the second receiving device. The transmission power corresponding to the receiving device, P1″ represents the power threshold of the first receiving device, P2″ represents the power threshold of the second receiving device, max represents the maximum value, and min represents the minimum value. In this power control method, the power used takes into account not only the first power and the second power, but also the corresponding AGC input saturation power, making the determined transmit power more accurate.

In an optional implementation, the first resource unit includes first sub-resource unit to M-th sub-resource unit, the contents of the first sub-resource unit and the second sub-resource unit are repeated, and, The contents of the Nth sub-resource unit overlap with the N+1-th sub-resource unit, and the N+1-th sub-resource unit is the starting sub-resource unit of the second service data and/or the second sideline control information. , N and M are both positive integers, and N is less than M. It can be understood that the first resource unit can carry two AGC symbols, and the two AGC symbols respectively correspond to the first service data and the second service data. In this way, the power of the first service data and the second service data can be controlled separately, so that the transmission power is more in line with the requirements of the service data, which is beneficial to improving the transmission success rate of the two types of service data.

In an optional implementation, the transmission power of the first service data and the transmission power of the second service data satisfy the following relationship: Or, the transmission power of the first service data and the transmission power of the second service data satisfy the following relationship: Wherein, P1 represents the transmission power of the first service data, P2 represents the transmission power of the second service data, P1′ represents the first power, P2′ represents the second power, P _th represents the AGC dynamic range tolerance threshold, sign is a symbolic function. If the difference between the first power and the second power is small, for example, the absolute value of the difference between the two is less than the AGC dynamic range tolerance threshold, the first power can be used to send the first service data, and the second power can be used to send the second service data, so that the transmission power of the two service data can meet the needs of the respective receiving devices. If the difference between the first power and the second power is large, for example, the absolute value of the difference between the two is greater than the AGC dynamic range tolerance threshold, the two AGC symbols in the first resource unit may not indicate a transmission power with an excessive difference. , then the sending device can make corresponding adjustments to reduce the difference between the two sending powers, and use the adjusted sending power to send service data.

In an optional implementation, the method further includes: receiving first feedback information from the first receiving device in a third resource unit, the first feedback information being used to indicate whether the first service data The reception is successful, wherein the third resource unit is determined from a plurality of resource units according to the first value, and the plurality of resource units are resource units associated with the first resource unit and used for transmitting feedback information.

In an optional implementation, the third resource unit is determined from multiple resource units according to the first value, including: the location information of the third resource unit is as follows: i=(P _ID + M _ID + C) mod (R1) + A; where i is associated with the location information of the third resource unit, P _ID represents the source identifier of the sending device, and M _ID represents the first protocol of the first receiving device The layer is the destination identifier configured by the first receiving device, R1 represents the first value, and C is a non-negative integer. Optionally, the first protocol layer is the MAC layer of the first receiving device, or the RLC layer of the first receiving device, or it may be other protocol layers located above the RLC layer.

In an optional implementation, the method further includes: receiving second feedback information from the second receiving device in a fourth resource unit, the second feedback information being used to indicate whether the second service data The reception is successful, wherein the fourth resource unit is determined from a plurality of resource units according to the second value, and the plurality of resource units are resource units associated with the first resource unit and used for transmitting feedback information.

In an optional implementation, the fourth resource unit is determined from multiple resource units according to the second value, including: the location information of the fourth resource unit satisfies the following relationship: i=(P _ID +M _ID +C) mod (R2) + B; wherein, i is associated with the location information of the fourth resource unit, P _ID represents the source identifier of the sending device, and M _ID represents the second source identifier of the second receiving device. The protocol layer is a destination identifier configured by the second receiving device, R2 represents the second value, and C is a non-negative integer. Optionally, the second protocol layer is the MAC layer of the second receiving device, or the RLC layer of the second receiving device, or it may be other protocol layers located above the RLC layer.

In an optional implementation, A=0, B=R1; or, B=0, A=R2.

It can be understood that the first receiving device determines the resource unit used to send feedback information based on the first value, and the second receiving device determines the resource unit used to send feedback information based on the second value, which is equivalent to the first receiving device and the second receiving device. The receiving device determines the resource units in different ways, thereby reducing the probability that the determined resource units are the same and reducing the probability of collision in the feedback channel.

In a second aspect, a second communication method is provided, which method can be executed by the first receiving device, or by other devices including the function of the first receiving device, or by a chip system (or chip) or other functional modules, and the chip The system or functional module can realize the function of the first receiving device, and the chip system or functional module is, for example, provided in the first receiving device. The first receiving device is, for example, a terminal device. The method includes: receiving first sideline control information and first service data from a sending device in a first resource unit, wherein the first sideline control information is associated with the first service data, and the first receiving device is The target receiving device of the first service data. When the first resource unit receives second sideline control information from the sending device, it is determined according to the second sideline control information that some sub-resource units of the first resource unit are not used to send data to the first receiving device. Transmission, wherein the second sideline control information is associated with second service data, the priority of the second service data is higher than the priority of the first service data, and the resource location of the second sideline control information is given by The first sideline control information indicates, or indicates through resource pool configuration information; or, in the second resource unit, third sideline control information is received from the sending device, and the third sideline control information includes the first indication. Information, the first indication information is used to indicate that some sub-resource units of the first resource unit are not used for transmission to the first receiving device, and the second resource unit is located in the first resource unit in the time domain. After the end; or, the first sideline control information includes first indication information, the first indication information is used to indicate parts of the first resource unit The molecular resource unit is not used for transmission to the first receiving device.

In an optional implementation, the first indication information included in the first sidelink control information includes one or more of the following: Starting time domain location information, starting time domain location information of the second sideline control information, the identification of the first receiving device, or the identification of the second receiving device, wherein the second receiving device is the The target receiving device of the second service data.

In an optional implementation, the first indication information included in the third sideline control information includes starting time domain location information of the second service data in the first resource unit, and /or the starting time domain position information of the second sideline control information.

In an optional implementation, receiving the second sideline control information from the sending device in the first resource unit includes: detecting the first candidate resource on at least one candidate resource indicated by the resource pool configuration information. Second sideline control information, the at least one candidate resource is used to send the second sideline control information and/or the second service data.

In an optional implementation, the first resource unit includes first sub-resource unit to M-th sub-resource unit, the contents of the first sub-resource unit and the second sub-resource unit are repeated, and, The starting time domain position of the second service data and/or the second sideline control information is located in the next sub-resource unit after the end of the first service data, and M is a positive integer.

In an optional implementation, the first resource unit includes first sub-resource unit to M-th sub-resource unit, the contents of the first sub-resource unit and the second sub-resource unit are repeated, and, The contents of the Nth sub-resource unit overlap with the N+1-th sub-resource unit, and the N+1-th sub-resource unit is the starting sub-resource unit of the second service data and/or the second sideline control information. , N and M are both positive integers, and N is less than M.

In an optional implementation, the method further includes: sending first feedback information to the sending device in a third resource unit, where the first feedback information is used to indicate whether the first service data is received successfully. , wherein the third resource unit is determined from a plurality of resource units according to the first value, and the plurality of resource units are resource units associated with the first resource unit and used for transmitting feedback information.

In an optional implementation, the third resource unit is determined from multiple resource units according to the first value, including: the location information of the third resource unit is as follows: i=(P _ID + M _ID + C) mod (R1) + A; where i is associated with the location information of the third resource unit, P _ID represents the source identifier of the sending device, and M _ID represents the first protocol of the first receiving device The layer is the destination identifier configured by the first receiving device, R1 represents the first value, and C is a non-negative integer.

In an optional implementation, A=0, or A=R2, and R2 represents the second value.

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

In a third aspect, a third communication method is provided, which method can be executed by the second receiving device, or by other devices including the function of the second receiving device, or by a chip system (or, chip) or other functional module, the chip The system or functional module can realize the function of the second receiving device, and the chip system or functional module is, for example, provided in the second receiving device. The second receiving device is, for example, a terminal device. The method includes: when the first resource unit receives second sideline control information and second service data from the sending device, and the second sideline control information and the second service data are located after the first sideline control information, The first sideline control information is associated with first service data, the target receiving device of the first service data is the first receiving device, the target receiving device of the second service data is the second receiving device, and the third receiving device The second side row control information is associated with the second service data, the priority of the second service data is higher than the priority of the first service data, and the resource location of the second side row control information is determined by the first service data. Indicated by sideline control information or through resource pool configuration information.

In an optional implementation, the second sideline control information includes first indication information, or the first sideline control information includes first indication information, wherein the first indication information is used to Indicate that some sub-resource units of the first resource unit are not used for transmission to the first receiving device.

In an optional implementation, the first sideline control information includes first indication information, and the first indication information includes one or more of the following: the second sidelink in the first resource unit. The starting time domain location information of the service data, the starting time domain location information of the second sideline control information, the identification of the first receiving device, or the identification of the second receiving device, wherein the first receiving device is the target receiving device for the first service data, and the second receiving device is the target receiving device for the second service data.

In an optional implementation, the first resource unit includes first sub-resource unit to M-th sub-resource unit, the contents of the first sub-resource unit and the second sub-resource unit are repeated, and, The second service data and/or the second side row control information The starting time domain position is located at the next sub-resource unit after the end of the first service data, and M is a positive integer.

In an optional implementation, the transmission power of the first service data and the transmission power of the second service data are both the larger value of the first power and the second power, and the first power is The transmit power corresponding to the first receiving device, and the second power is the transmit power corresponding to the second receiving device.

In an optional implementation, the method further includes: sending second feedback information to the sending device in the fourth resource unit, where the second feedback information is used to indicate whether the second service data is received successfully. , wherein the fourth resource unit is determined from a plurality of resource units according to the second value, and the plurality of resource units are resource units associated with the first resource unit and used for transmitting feedback information.

In an optional implementation, the fourth resource unit is determined from multiple resource units according to the second value, including: the location information of the fourth resource unit satisfies the following relationship: i=(P _ID +M _ID +C) mod (R2) + B; wherein, i is associated with the location information of the fourth resource unit, P _ID represents the source identifier of the sending device, and M _ID represents the second source identifier of the second receiving device. The protocol layer is a destination identifier configured by the second receiving device, R2 represents the second value, and C is a non-negative integer.

In an optional implementation, B=0, or B=R1, and R1 represents the first value.

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

A fourth aspect provides a communication device. The communication device may be the sending device described in any one of the above first to third aspects. The communication device has the function of the above-mentioned transmitting device. The communication device is, for example, a sending device, or a larger device including the sending device, or a functional module in the sending device, such as a baseband device or a chip system. In an optional implementation, the communication device includes a baseband device and a radio frequency device. In another optional implementation, the communication device includes a processing unit (sometimes also called a processing module) and a transceiver unit (sometimes also called a transceiver module). The transceiver unit can realize the sending function and the receiving function. When the transceiver unit realizes the sending function, it can be called a sending unit (sometimes also called a sending module). When the transceiver unit realizes the receiving function, it can be called a receiving unit (sometimes also called a sending module). receiving module). The sending unit and the receiving unit can be the same functional module, which is called the sending and receiving unit, and the functional module can realize the sending function and the receiving function; or the sending unit and the receiving unit can be different functional modules, and the sending and receiving unit is responsible for these functions. The collective name for functional modules.

In an optional implementation, the transceiver unit (or the sending unit) is configured to send the first sideline control information and the first service data to the first receiving device in the first resource unit, wherein, The first sideline control information is associated with the first service data; the transceiver unit (or the sending unit) is also configured to send the second sideline control to the second receiving device in the first resource unit. information and second service data, the second side row control information is associated with the second service data, the priority of the second service data is higher than the priority of the first service data, the second side row The resource location of the control information is indicated by the first sidelink control information or indicated by the resource pool configuration information.

In an optional implementation, the communication device further includes a storage unit (sometimes also referred to as a storage module), the processing unit is configured to be coupled with the storage unit and execute the program in the storage unit or Instructions enable the communication device to perform the function of the sending device described in any one of the above first to third aspects.

In a fifth aspect, a communication device is provided. The communication device may be the first receiving device described in any one of the above first to third aspects. The communication device has the function of the first receiving device. The communication device is, for example, a first receiving device, or a larger device including the first receiving device, or a functional module in the first receiving device, such as a baseband device or a chip system. In an optional implementation, the communication device includes a baseband device and a radio frequency device. In another optional implementation, the communication device includes a processing unit (sometimes also called a processing module) and a transceiver unit (sometimes also called a transceiver module). Regarding the implementation of the transceiver unit, please refer to the introduction in the fourth aspect.

In an optional implementation, the transceiver unit (or the receiving unit) is configured to receive the first sideline control information and the first service data from the sending device in the first resource unit, wherein the The first sideline control information is associated with the first service data, and the first receiving device is a target receiving device of the first service data. The transceiver unit (or the receiving unit) is further configured to receive second sideline control information from the sending device in the first resource unit, and determine the first sideline control information based on the second sideline control information. Some sub-resource units of the resource unit are not used for transmission to the first receiving device, where the second sideline control information is associated with second service data, The priority of the second service data is higher than the priority of the first service data, and the resource location of the second sideline control information is indicated by the first sideline control information or indicated by the resource pool configuration information. ; Or, the transceiver unit (or the receiving unit) is also configured to receive third side line control information from the sending device in the second resource unit, where the third side line control information includes the first indication information , the first indication information is used to indicate that some sub-resource units of the first resource unit are not used for transmission to the first receiving device, and the second resource unit is located at the end of the first resource unit in the time domain. or, the first sidelink control information includes first indication information, and the first indication information is used to indicate that some sub-resource units of the first resource unit are not used for transmission to the first receiving device.

In an optional implementation, the communication device further includes a storage unit (sometimes also called a storage module), the processing unit is configured to be coupled with the storage unit and execute the program in the storage unit or Instructions enable the communication device to perform the function of the first receiving device described in any one of the above first to third aspects.

A sixth aspect provides a communication device. The communication device may be the second receiving device described in any one of the above first to third aspects. The communication device has the function of the second receiving device. The communication device is, for example, a second receiving device, or a larger device including the second receiving device, or a functional module in the second receiving device, such as a baseband device or a chip system. In an optional implementation, the communication device includes a baseband device and a radio frequency device. In another optional implementation, the communication device includes a processing unit (sometimes also called a processing module) and a transceiver unit (sometimes also called a transceiver module). Regarding the implementation of the transceiver unit, please refer to the introduction in the fourth aspect.

In an optional implementation, the transceiver unit (or the receiving unit) is configured to receive second sideline control information and second service data from the sending device in the first resource unit, and the second The sideline control information and the second service data are located after the first sideline control information, the first sideline control information is associated with the first service data, and the target receiving device of the first service data is the first receiving device, The target receiving device of the second service data is the second receiving device, the second sideline control information is associated with the second service data, and the priority of the second service data is higher than that of the first service The priority of the data, the resource location of the second sideline control information is indicated by the first sideline control information, or indicated by the resource pool configuration information.

In an optional implementation, the communication device further includes a storage unit (sometimes also called a storage module), the processing unit is configured to be coupled with the storage unit and execute the program in the storage unit or Instructions enable the communication device to perform the function of the second receiving device described in any one of the above first to third aspects.

A seventh aspect provides a communication system, including a sending device and a first receiving device, wherein the sending device is used to perform the communication method as described in the first aspect, and the first receiving device is used to perform the communication method as described in the second aspect. the communication method described above.

Optionally, the communication system further includes a second receiving device, configured to perform the communication method described in the third aspect.

In an eighth aspect, a computer-readable storage medium is provided. The computer-readable storage medium is used to store a computer program or instructions. When the computer program or instructions are executed, the sending device or the first receiving device or the second receiving device in the above aspects are The method executed by the device is implemented.

A ninth aspect provides a computer program product containing instructions that, when run on a computer, enables the methods described in the above aspects to be implemented.

In a tenth aspect, a chip system is provided, including a processor and an interface. The processor is configured to call and run instructions from the interface, so that the chip system implements the methods of the above aspects.

Description of the drawings

Figure 1 is a schematic diagram of a communication network architecture used in an embodiment of the present application;

Figure 2 is a flow chart of a communication method provided by an embodiment of the present application;

Figure 3 is a schematic diagram of the resource preemption process in the embodiment of the present application;

Figure 4 is a schematic diagram of the location of the third side row control information in the embodiment of the present application;

Figure 5 is a schematic diagram of the location of the second side row control information in the embodiment of the present application;

Figure 6 is a schematic diagram of the location of the first side row control information in the embodiment of the present application;

Figure 7 is a schematic diagram of the time domain resources included in the first resource unit carrying AGC symbols in this embodiment of the present application;

Figure 8 is a schematic diagram of a device provided by an embodiment of the present application;

Figure 9 is a schematic diagram of yet another device provided by an embodiment of the present 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 described in further detail below with reference to the accompanying drawings.

In the embodiments of this application, the number of nouns means "singular noun or plural noun", that is, "one or more", unless otherwise specified. "At least one" means one or more, and "plurality" means two or more. "And/or" describes the relationship between associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural. The character "/" generally indicates that the related objects are in an "or" relationship. For example, A/B means: A or B. "At least one of the following" or similar expressions thereof refers to any combination of these items, including any combination of a single item (items) or a plurality of items (items). For example, at least one of a, b, or c means: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, c Can be single or multiple.

The ordinal words such as "first" and "second" mentioned in the embodiment of this application are used to distinguish multiple objects and are not used to limit the size, content, order, timing, priority or importance of multiple objects. For example, the first resource unit and the second resource unit can be the same resource unit, or they can be different resource units. Moreover, such names do not indicate the location, size, application scenarios, and priorities of the two resource units. level or importance. In addition, the numbering of steps in the various embodiments introduced in this application is only to distinguish different steps and is not used to limit the order between steps. For example, S201 may occur before S202, or may occur after S202, or may occur simultaneously with S202.

In the following, some terms or concepts in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

In the embodiment of the present application, the terminal device is a device with wireless transceiver function, which can be a fixed device, a mobile device, a handheld device (such as a mobile phone), a wearable device, a vehicle-mounted device, or a wireless device built into the above device (such as , communication module, modem, or chip system, etc.). The terminal device is used to connect people, objects, machines, etc., and can be widely used in various scenarios, including but not limited to the following scenarios: cellular communication, device-to-device communication (device-to-device, D2D), car-to-everything (vehicle to everything, V2X), machine-to-machine/machine-type communications (M2M/MTC), Internet of things (IoT), virtual reality (VR) , augmented reality (AR), industrial control, self-driving, remote medical, smart grid, smart furniture, smart office, smart wear, smart transportation , terminal equipment for smart cities, drones, robots and other scenarios. The terminal equipment may sometimes be called user equipment (UE), terminal, access station, UE station, remote station, wireless communication equipment, or user device, etc. For convenience of description, in the embodiment of this application, the terminal device is described by taking a UE as an example.

The network equipment in the embodiment of the present application includes, for example, access network equipment and/or core network equipment. The access network device is a device with a wireless transceiver function and is used to communicate with the terminal device. The access network equipment includes but is not limited to base station (base transceiver station (BTS), Node B, eNodeB/eNB, or gNodeB/gNB), transceiver point (transmission reception point, TRP), third-generation cooperation Base stations for the subsequent evolution of the 3rd generation partnership project (3GPP), access nodes, wireless relay nodes, wireless backhaul nodes, etc. in wireless fidelity (Wi-Fi) systems. The base station may be: a macro base station, a micro base station, a pico base station, a small station, a relay station, etc. Multiple base stations can support networks with the same access technology or networks with different access technologies. A base station may contain one or more co-located or non-co-located transmission and reception points. The access network device may also be a wireless controller, a centralized unit (CU), and/or a distributed unit (DU) in a cloud radio access network (CRAN) scenario. The access network device may also be a server or the like. For example, the network equipment in vehicle to everything (V2X) technology can be a road side unit (RSU). The access network equipment is described below using a base station as an example. The base station can communicate with the terminal device or communicate with the terminal device through the relay station. Terminal devices can communicate with multiple base stations in different access technologies. The core network equipment is used to implement functions such as mobility management, data processing, session management, policy and billing. The names of devices that implement core network functions in systems with different access technologies may be different, and the embodiments of this application do not limit this. Taking the 5G system as an example, the core network equipment includes: access and mobility management function (AMF), session management function (SMF), policy control function (PCF) or User plane function (UPF), etc.

In the embodiment of the present application, the communication device used to implement the function of the network device may be a network device, or may be a device that can support the network device to implement the function, such as a chip system, and the device may be installed in the network device. In the technical solution provided by the embodiment of the present application, the technical solution provided by the embodiment of the present application is described by taking the device for realizing the functions of the network device being a network device as an example.

In this embodiment of the present application, the resource unit includes, for example, one or more of time domain resources, frequency domain resources, air domain resources, or code domain resources. The sub-resource unit is the result of further dividing the resource unit. Similarly, the sub-resource unit includes, for example, one or more of time domain resources, frequency domain resources, air domain resources or code domain resources. Take the resource unit and the sub-resource unit including time domain resources as an example. For example, the time domain resource included in a resource unit is a radio frame (RF), and the time domain resource included in a sub-resource unit is a subframe (subframe), time domain resource. slot, mini-slot, or orthogonal frequency division multiplexing (OFDM) symbol etc.; Or, the time domain resources included in one resource unit are subframes, and the time domain resources included in one subresource unit are time slots, mini-slots, or OFDM symbols, etc.; or, the time domain resources included in one resource unit are time domain resources. Slot or mini-slot, the time domain resources included in one sub-resource unit are OFDM symbols, etc.

The technical solution provided by the embodiments of this application can be applied to the fourth generation mobile communication technology (the 4th generation, 4G) system, such as the long term evolution (long term evolution, LTE) system, or can be applied to the 5G system, such as the NR system , or it can also be applied to the next generation mobile communication system or other similar communication systems, such as the sixth generation mobile communication technology (the 6th generation, 4G) system, etc., without specific restrictions. In addition, the technical solutions provided by the embodiments of this application can be applied to device-to-device (D2D) scenarios, such as NR-D2D scenarios, etc., or can be applied to vehicle to everything (V2X) scenarios, such as NR-V2X scenarios, etc. For example, it can be applied to the Internet of Vehicles, such as vehicle-to-everything (V2X), or it can be used in fields such as intelligent driving, assisted driving, or intelligent connected vehicles. If applied to a D2D scenario, both communicating parties may be UEs; if applied to a non-D2D scenario, one communicating party may be a UE and the other party may be a network device (such as an access network device), or both communicating parties may be network devices. . In the following introduction process, both communication parties are UEs as an example.

Reference may be made to FIG. 1 , which is a communication network architecture applicable to the embodiment of the present application. Figure 1 includes a sending device, a receiving device 1 and a receiving device 2. The sending device 1 can schedule the resource 1 for the receiving device 1 to send the data 1 to the receiving device 1 through the resource 1 . In addition, the sending device 1 can also seize some or all of the resources in the resource 1 to send the data 2 to the receiving device 2.

For example, the sending device, receiving device 1 and receiving device 2 are all UEs. The receiving device 1 and the receiving device 2 may be different devices, as shown in Figure 1; or the receiving device 1 and the receiving device 2 may be the same device.

In order to better introduce the embodiments of the present application, the methods provided by the embodiments of the present application are introduced below with reference to the accompanying drawings. Unless otherwise specified in the following text, the steps indicated by dotted lines in the drawings corresponding to various embodiments of the present application are all optional steps.

The embodiment of the present application provides a first communication method. Please refer to Figure 2, which is a flow chart of the method. This method can be applied to the network architecture shown in Figure 1. For example, the sending device involved in this method is the sending device in Figure 1, and the first receiving device involved in this method is the receiving device 1 in Figure 1. The second receiving device involved in the method is the receiving device 2 in Figure 1 .

S201. The sending device sends the first sideline control information and the first service data in the first resource unit.

The first side row control information may be associated with the first service data. For example, the first sideline control information includes scheduling information of the first service data, or the first sideline control information may indicate resources of the first service data. For example, the first sideline control information indicates that part or all of the available sub-resource units in the first resource unit are time domain resources used to transmit the first service data. The available sub-resource units refer to sub-resource units that can be used to transmit data. For the receiving device, the first service data can be received according to the first sideline control information. The first side link control information is, for example, side link control information (SCI), such as first level (1st stage) SCI or second level (2nd stage) SCI. If the first sidelink control information is the first level SCI, the first sidelink control information can be carried on the physical sidelink control channel (PSCCH); if the first sidelink control information is the second level SCI level SCI, the first sidelink control information can be carried on the physical sidelink shared channel (PSSCH).

The first service data is, for example, service data with a lower priority, or service data with a lower importance, or service data with a lower delay requirement.

S202. The sending device sends the second sideline control information and the second service data in the first resource unit. For example, after the sending device executes S201, or in other words, after the sending device sends the first sideline control information and the first service data in the first resource unit, the sending device may execute S202.

The second sideline control information may be associated with the second service data. For example, the second sideline control information includes scheduling information of the second service data, and the scheduling information may indicate (or schedule) the second service data. For example, the scheduling information may indicate resources for the second service data. For example, the scheduling information may indicate that some of the available sub-resource units within the first resource unit are time domain resources used to transmit the second service data. Alternatively, the scheduling information does not need to indicate the resource of the second service data. The receiving device (for example, the second receiving device) can determine the resource location of the second service data according to predefined rules. For example, the rule is specified by the protocol, configured by the access network device, or configured by the sending device, etc. For example, a predefined rule is that the starting time domain position of the second service data is the sum of the time domain position of the second sideline control information (such as the starting time domain position or the ending time domain position) and the first offset. , for example, the unit of the first offset is a sub-resource unit. As an example, the end time domain position of the second sideline control information is the second OFDM symbol in a time slot, the first offset is 0, and the predefined rule is the starting time domain position of the second service data. is the sum of the end time domain position of the second sideline control information and the first offset, then the receiving device can determine that the starting time domain position of the second service data is the OFDM symbol. Wherein, the time domain resources used to transmit the first service data are different from the time domain resources used to transmit the second service data. For the receiving device, the second service data can be received according to the second sideline control information. The second side row control information is, for example, the first level SCI or the second level SCI. Regarding the channel carrying the second side row control information, please refer to the channel carrying the first side row control information. Introduction to control information channels.

The second service data is, for example, service data with a higher priority, or service data with a higher importance, or service data with a higher delay requirement. For example, the second service data and the first service data satisfy one or more of the following: the priority of the second service data is higher than the priority of the first service data, and the importance of the second service data is higher than that of the first service data. Importance, the delay requirement of the second service data is higher than the delay requirement of the first service data. Among them, the higher the delay requirement, the smaller the transmission delay should be. Therefore, if the delay requirement of the second service data is higher than the delay requirement of the first service data, the transmission delay of the second service data is required to be smaller than that of the first service data. The transmission delay of the first service data, for example, the second service data is data of delay-sensitive services.

The resource location of the second sideline control information may be indicated by the first sideline control information, and the receiving device may determine the resource location of the second sideline control information based on the first sideline control information. Alternatively, the resource location of the second sidelink control information may also be indicated by resource pool configuration information. The resource pool configuration information may come from the access network device, for example, or may be preconfigured in the sending device and the receiving device. The resource pool configuration information can be used to configure the resource pool, and the sending device can select resources in the resource pool when sending information.

It can be understood that the sending device originally sends the first service data in the first resource unit, and the resources in the first resource unit are all used for the transmission of the first service data. And when the second service data arrives, in order to send the second service data in time, the sending device can seize the resources originally allocated to the first service data to send the second service data, so that the second service data can be transmitted in time and reduce the transmission time. time delay. In addition, the resource location of the second sideline control information may be indicated by the first sideline control information, or may be indicated by the resource pool configuration information, so that both the sending device and the receiving device can determine the resource location of the second sideline control information, to receive the second sideline control information at the correct resource location.

Refer to Figure 3, which is an example of the resource preemption process.

The sending device has completed the mapping of the media access control (MAC) protocol data unit (PDU) of the first service data to the physical channel. For example, the sending device has completed the mapping of the first service data from the media access control (media access control, MAC) protocol data unit (PDU) to the physical channel. For this, refer to S301 in Figure 3. In addition, the sending device has scheduled the first resource unit as a transmission resource for the first service data, and all sub-resource units in the first resource unit can be used to transmit the first service data. Among them, the first service data has completed the mapping from MAC PDU to the physical channel. It can be understood that the first service data has been mapped to a transport block (TB), the TB has been mapped to a modulation symbol, and the modulation symbol has also been mapped to a transport block (TB). Already mapped to the corresponding resource unit (resource element, RE). Therefore, S302 in Figure 3 is that the sending device sends the first service data, or in other words, the first service data is transmitted. For example, the sending device may send the first service data on the first resource unit. Wherein, the sending device may also send the first side row control information to correlate the first service data.

For example, during the transmission of the first service data, the sending device can determine whether a MAC service data unit (SDU) corresponding to other service data reaches the MAC layer. Please refer to S303. For example, in S303, the sending device determines whether a MAC SDU corresponding to high-priority service data reaches the MAC layer. If no MAC SDU corresponding to other service data reaches the MAC layer, S304 is executed, and the first service data continues to be transmitted. If there is a MAC SDU corresponding to other service data that reaches the MAC layer, for example, the MAC SDU corresponding to the second service data reaches the MAC layer, S305 can be executed to trigger a preemption request. For example, if the MAC SDU corresponding to the second service data reaches the MAC layer, the sending device can generate the MAC PDU corresponding to the second service data. The MAC PDU corresponding to the second service data does not have time to complete mapping to the physical channel. Therefore, the sending device can seize the resources originally called for the first service data to send the second service data. For example, in S305, the upper layer of the protocol layer of the sending device (such as the packet data convergence protocol (PDCP) layer or the radio link control (RLC) layer, etc.) can send a message to the MAC layer of the sending device. A preemption request is triggered to request to preempt resources scheduled for the first service data to transmit the second service data. Or the upper layer does not need to be triggered, and the MAC layer can determine on its own to seize the resources scheduled for the first service data to transmit the second service data.

Optionally, after receiving the trigger request (or the MAC layer determines on its own to seize the resources scheduled for the first service data to transmit the second service data), the MAC layer can execute S306 to determine whether the preemption conditions are met. For example, the preemption conditions include: the MAC PDU corresponding to the second service data can complete the mapping to the TB in the first resource unit, and/or the available sub-resource units in the first resource unit can complete the second sideline control information and Transfer of that terabyte. The available sub-resource units in the first resource unit include, for example, the remaining sub-resource units in the first resource unit except the sub-resource units that have been used to transmit the first service data. If the preemption conditions are met, resource preemption can be performed; if the preemption conditions are not met, resource preemption is not performed, for example, S304 can be continued. Through preemption conditions, the resource preemption process is made more reasonable.

If the preemption condition is met, S307 may be executed, and the sending device interrupts (or interrupts) the transmission of the first service data. For example, when the transmission is interrupted, the first service data has been transmitted on some sub-resource units in the first resource unit, and then the first service data will no longer be transmitted on the remaining sub-resource units in the first resource unit. After that, S308 can be executed, and the sending device completes the MAC of the second service data. The PDU is mapped on the physical channel and the second service data is sent. For example, if the sending device preempts one or more sub-resource units within the first resource unit, the sending device may send the second service data on the one or more sub-resource units. The sending device may also send second sideline control information to correlate the second service data. For example, the second sideline control information may also be sent on one or more sub-resource units preempted by the sending device.

Optionally, since the transmission of the first service data is interrupted, the sending device can also cache the first service data to retransmit the first service data. For this, refer to S309. For example, the sending device may store the first service data in a hybrid automatic repeat request (HARQ) cache area. The sending device sends the first service data in the first resource unit, for example, through the HARQ process corresponding to the HARQ process number a. Then, when retransmitting the first service data, the HARQ process corresponding to the HARQ process number a can also be used for retransmission. For example, the sending device retransmits the first service data in the resource unit after the end of the first resource unit. For example, the resource unit is the next resource unit adjacent to the first resource unit, or the resource unit includes time domain resources and The time domain resources included in the first resource unit are separated by one or more time slots. Optionally, the sending device can indicate in which time slot the retransmission is performed. For example, the sending device can indicate the time slot in which the retransmission is performed through the SCI. Among them, part of the first service data may have been transmitted in the first resource unit, and the remaining part is interrupted. When the first receiving device (the target receiving device of the first service data) decodes the first service data, it decodes the first service data as a whole. Therefore, when retransmitting, the sending device can retransmit the complete first service data. A service data, so that the first receiving device can decode successfully.

According to Figure 3, it can be seen that the sending device seizes some sub-resource units in the first resource unit to send the second service data. The first receiving device may not know that some resources in the first resource unit are preempted, which may cause some behaviors of the first receiving device to be incorrect. Optionally, in this embodiment of the present application, the sending device may send first indication information, and the first indication information may indicate that some sub-resource units in the first resource unit are not used for transmission to the first receiving device, or the first indication information It may be indicated that the transmission of the first service data is interrupted, so that the first receiving device can clarify that some sub-resource units in the first resource unit are not used for transmission to the first receiving device according to the first indication information. The sending device can send this information in different ways, as shown below.

1. The first method of sending the first instruction information.

The sending device sends third side line control information, and the third side line control information includes the first indication information. The third side row control information is, for example, the first level SCI or the second level SCI. Regarding the channel carrying the third sideline control information, reference may be made to the previous introduction to the channel carrying the first sideline control information.

For example, the sending device may send the third sideline control information in the second resource unit. The second resource unit is located after the end of the first resource unit in the time domain. For example, the second resource unit is adjacent to the first resource unit in the time domain. The next resource unit next to the neighbor. Equivalently, the sending device first sends the first service data and the second service data on the first resource unit, and then indicates the resource preemption situation in the second resource unit. For example, the second resource unit can transmit the third service data, and the third side line control information can be associated with the third service data. For example, the third side line control information includes the scheduling information of the third service data, or the third side line control information can Indicates the resource of the third business data. Optionally, the third service data may be the retransmitted first service data. For example, the third service data includes the first service data, indicating that the third service data is a retransmission of the first service data. For another example, the HARQ process number included (or indicated) in the third sideline control information may be the same as the HARQ process number included (or indicated) in the first sideline control information, and the new data included in the third sideline control information The indication (new data indicator, NDI) may be the same as the NDI included in the first sideline control information, or may indicate that the third service data is a retransmission of the first service data. For another example, the first service data and the third service data correspond to the same transport block (TB), which may also indicate that the third service data is a retransmission of the first service data.

Refer to Figure 4, which is a schematic diagram of the location of the third side row control information. Figure 4 takes as an example that the time domain resource included in a resource unit is a time slot, the time domain resource included in a sub-resource unit is an OFDM symbol, and the sidelink control information is carried on the PSSCH. The first time slot (time slot n1) in Figure 4 is, for example, the time domain resource included in the first resource unit, and the 0th OFDM symbol in the first time slot is, for example, automatic gain control (AGC). Symbols, the 1st OFDM symbol to the 6th OFDM symbol are, for example, used to transmit the first service data, where the PSSCH of the first OFDM symbol can carry SCI, and the SCI is, for example, the first sideline control information. The 7th OFDM symbol also takes the AGC symbol as an example. The 8th to 12th OFDM symbols are used to transmit the second service data, for example. The PSSCH of the 8th OFDM symbol can carry the SCI, and the SCI is, for example, the second Lateral control information. In addition, the last OFDM symbol is, for example, a guard symbol.

The second time slot (time slot n2) in FIG. 4 is, for example, a time domain resource included in the second resource unit. For example, the PSSCH in the second time slot can carry the third service data. It can be seen that the PSSCH of the first OFDM symbol of the second time slot carries the SCI, which is, for example, the third sideline control information. The time slot n1 and the time slot n2 may be adjacent time slots, or the two time slots may be separated by one or more time slots.

The first indication information included in the third sidelink control information, for example, includes (or indicates) one or more of the following: starting time domain location information of the second service data in the first resource unit, second sidelink control The starting time domain location information of the information, the ending time domain location of the first service data, the sub-resource unit used to transmit the second service data in the first resource unit (or, the sub-resource unit used to transmit the second service data in the first resource unit set), sub-resource units within the first resource unit that are not used to transmit the first service data, or the location where the second service data is associated with the AGC symbol. It can be understood that the first indication information included in the third sidelink control information includes starting time domain location information of the preempted resource in the first resource unit. Among them, the time domain location information (such as the starting time domain location information or the ending time domain location information) included in the third sideline control information may be the time information of the time domain location, or may also be the time domain location information to which the time domain location belongs. The index of the sub-resource unit.

The second service data may occupy one or more sub-resource units within the first resource unit, and the starting time domain position of the second service data is, for example, the first sub-resource unit among the one or more sub-resource units. The starting time domain position is, for example, the time domain position of OFDM symbol 8 in the first time slot in Figure 4. The understanding of the starting time domain position of the second side row control information is also similar. The first sub-resource unit among the one or more sub-resource units is, for example, the earliest arriving sub-resource unit in the time domain among the one or more sub-resource units.

The first service data may occupy at least one sub-resource unit in the first resource unit, for example, occupy 2 or 3 sub-resource units. The end time domain position of the first service data is, for example, the end time domain position of the last sub-resource unit in the at least one sub-resource unit, for example, the time domain position of OFDM symbol 6 in the first time slot in Figure 4 .

The position of the second service data associated with the AGC symbol is, for example, the time domain position of the AGC symbol associated with the second service data, such as the time domain position of OFDM symbol 7 in the first time slot in Figure 4 . The AGC symbol associated with the service data can be understood as that the AGC symbol is used by the target receiving device of the service data to adjust the AGC gain to receive the second service data.

Optionally, the starting time domain position of the service data and the starting time domain position of the sidelink control information associated with the service data may be the same. For example, referring to Figure 4, the PSSCH of the 8th OFDM symbol of the first time slot (time slot n) carries the second side row control information. In addition, the PSSCH can also carry the second service data, that is, the second The starting time domain position of the sidelink control information is the same as the starting time domain position of the second service data. Therefore, whether the first indication information indicates the starting time domain position of the second service data or the starting time domain position of the second sideline control information, the receiving device (for example, the first receiving device) can use this to Determine the starting time domain position of the second service data and the starting time domain position of the second sideline control information, that is, determine the starting time domain position of the preempted resource.

Alternatively, if the first indication information includes end time domain location information of the first service data, the receiving device (for example, the first receiving device) may determine the second time domain location information based on whether the first resource unit includes an AGC symbol associated with the second service data. The starting time domain position of the service data and/or the second sideline control information. For example, the first resource unit includes an AGC symbol associated with the second service data, then the receiving device may determine that the end time domain position of the first service data is shifted backward by 2 sub-resource units and is the second service data and/or The starting time domain position of the second sideline control information. For example, the end time domain position of the first service data is the time domain position of OFDM symbol 6 in the first time slot in Figure 4, then the receiving device can determine the time domain position of OFDM symbol 8 in the first time slot in Figure 4 The position is the starting time domain position of the second service data and/or the second sideline control information. Alternatively, if the first resource unit does not include the AGC symbol associated with the second service data, the receiving device may determine that the end time domain position of the first service data is shifted backward by 1 sub-resource unit as the second service data. and/or the starting time domain position of the second sideline control information. For example, the end time domain position of the first service data is the time domain position of OFDM symbol 6 in the first time slot in Figure 4, then the receiving device can determine the time domain position of OFDM symbol 7 in the first time slot in Figure 4 The position is the starting time domain position of the second service data and/or the second sideline control information.

Alternatively, if the first indication information includes the position of the second service data associated with the AGC symbol, the receiving device (for example, the first receiving device) can determine the second service data and/or the second side according to the time domain position of the AGC symbol. The starting time domain position of the row control information. For example, the position associated with the second service data and the AGC symbol is the time domain position of OFDM symbol 7 in the first time slot (time slot n) in Figure 4, then the receiving device can determine the time domain position of OFDM symbol 7 in the first time slot in Figure 4. The time domain position of OFDM symbol 8 is the starting time domain position of the second service data and/or the second sideline control information.

The first indication information includes the starting time domain position information of the preempted resource, which indicates that starting from the starting time domain position until the end of the available sub-resource units in the first resource unit, all sub-resource units in between are available. For carrying the second service data, the receiving device can determine all preempted sub-resource units in the first resource unit accordingly. The available sub-resource units in the first resource unit refer to resources that can be used to transmit data, such as PSSCH. For example, the starting time domain position of the second service data and/or the second sidelink control information is determined according to the first indication information to be the time domain position of OFDM symbol 8 in the first time slot in Figure 4, and within one time slot The last symbol is a guard symbol and cannot be used to transmit data, then the receiving device can determine that OFDM symbols 8 to 12 in the first time slot are preempted resources.

Alternatively, if the first indication information indicates a sub-resource unit within the first resource unit used to transmit the second service data, or indicates that the first resource unit Sub-resource units in the source unit that are not used to transmit the first service data. For example, one indication method is that the first indication information is implemented in the form of a bitmap. The number of bits included in the bitmap is the same as the number of sub-resource units included in the first resource unit. The number of resource units is equal, and the bits included in the bitmap correspond one-to-one to the sub-resource units in the first resource unit. If the value of a bit in the bitmap is "1", it means that the corresponding sub-resource unit is used to transmit the first service data, or to transmit data to the first receiving device; if the value of a bit in the bitmap is "0", indicating that the corresponding sub-resource unit is not used to transmit the first service data, or is not used to transmit data to the first receiving device. Or, if the value of a bit in the bitmap is "0", it means that the corresponding sub-resource unit is used to transmit the first service data, or used to transmit data to the first receiving device; if the value of a bit in the bitmap is "1", indicating that the corresponding sub-resource unit is not used to transmit the first service data, or is not used to transmit data to the first receiving device. Then the first receiving device can determine the preempted resources in the first resource unit based on the bitmap.

Optionally, for example, if the third sideline control information is SCI, a new field may be introduced in the SCI, for example, called a first field, and the first field may be used to carry the first indication information. In this case, the SCI including the first indication information can be regarded as the SCI of the new format.

If the second resource unit is used to transmit third service data, the third sideline control information may also include other information in addition to the first indication information. For example, the third sideline control information may also include one or more of the following: the identification of the first receiving device, the HARQ process number corresponding to the third service data, and the redundancy version (RV) corresponding to the third service data. number, or, new data indicator (NDI). The identification of the first receiving device may be, for example, the identity number (ID) of the first receiving device, or the address of the first receiving device, or the like. In this embodiment of the present application, the identification of the receiving device includes, for example, the destination identification of the receiving device and/or the destination address information of the receiving device. For example, the identification of the first receiving device may include the destination identification of the first receiving device and/or the destination address information of the first receiving device; the identification of the second receiving device may include the destination identification of the second receiving device and/or the second receiving device. The destination address information of the device. The destination identification of the receiving device is, for example, the destination identity number (ID) of the receiving device.

The HARQ process number corresponding to the third service data and the HARQ process number corresponding to the first service data may be the same HARQ process number. The RV number corresponding to the third service data and the RV number corresponding to the first service data may be the same RV number or different RV numbers. If the second resource unit is used to retransmit the first service data, the NDI may indicate non-new data, indicating that the current data is retransmitted.

The first receiving device may receive the third sideline control information. For example, the first receiving device may receive the SCI including the first indication information. The third sideline control information can be sent at the beginning of the second resource unit (refer to Figure 4), and the receiving device generally detects the SCI at the beginning of the time slot. For the first receiving device, it is received through the normal detection mechanism. The third side row control information, such as receiving SCI. If the first receiving device determines that the SCI is a new format SCI, the first receiving device may determine the preempted resources in the first resource unit according to the first indication information. In addition, the first receiving device may also determine based on one or more of the identification of the first receiving device included in the SCI, the HARQ process number corresponding to the third service data, the RV number corresponding to the third service data, or the NDI. What is transmitted in the second resource unit is the retransmitted first service data.

In addition, there is a second receiving device, which is the target receiving device of the second service data. Optionally, since the second receiving device also detects the SCI according to the normal mechanism, the second receiving device can also detect the third sideline control information. For example, the second receiving device can receive the SCI including the first indication information. For example, if the second receiving device determines that the target receiving device indicated by the SCI is not the second receiving device (for example, the identity of the target receiving device included in the SCI is not the identity of the second receiving device), it can discard the SCI, and the second receiving device The receiving device also does not have to receive data within the second resource unit.

In the first sending mode, the first receiving device can detect and receive the first sideline control information, and based on decoding the first sideline control information, the first receiving device determines the target receiving device included in the first sideline control information. The identifier is the same as the identifier of the first receiving device, then it can be determined that the first sideline control information is to schedule resources for the first service data, and the target receiving device of the first service data is the first receiving device, so the first receiving device can Receive first service data. Optionally, since the first receiving device cannot identify which sub-resource unit within the first resource unit is an AGC symbol, the first receiving device will also receive the AGC symbol (for example, the OFDM symbol in time slot n shown in Figure 4 7). The first receiving device may receive the second sideline control information but does not have to decode the second sideline control information. In addition, in the first manner, the first sidelink control information may indicate that all available sub-resource units within the first resource unit are time domain resources used for transmitting the first service data. Therefore, after receiving the first sideline control information, the first receiving device receives data on all available sub-resource units within the first resource unit. Taking Figure 4 as an example, all available sub-resource units within the first resource unit For example, it includes OFDM symbols 2 to OFDM symbols 6 and OFDM symbols 8 to OFDM symbols 12 in FIG. 4 . Among them, the first receiving device will uniformly decode the data received in the first resource unit. For example, the first receiving device will decode the data received in the first resource unit as one TB. These data include both the first service data and Includes second business data. Since the second service data and the first service data are respectively mapped to different TBs, the first receiving device may fail to decode the data received in the first resource unit. As mentioned earlier, the sending device can The first service data is retransmitted in the second resource unit, and when the first service data is retransmitted, the first service data can be retransmitted as a whole, so the first receiving device can successfully decode the retransmitted first service data, The reception success rate of the first receiving device is improved.

For the second receiving device, the second sideline control information can be detected and received; in addition, the second receiving device can detect the first sideline control information. If the second receiving device detects the first sideline control information, based on decoding the first sideline control information, the second receiving device determines the identity of the target receiving device included in the first sideline control information and the identity of the second receiving device. different (taking the first receiving device and the second receiving device as different receiving devices as an example), it can be determined that the first sideline control information is to schedule resources for the first service data, and the target receiving device of the first service data is not the third receiving device. There is a second receiving device, so the second receiving device may not receive the first service data. According to the decoding of the second sideline control information, the second receiving device determines that the identity of the target receiving device included in the second sideline control information is the same as the identity of the second receiving device, then it can be determined that the second sideline control information is The second service data schedules resources, and the target receiving device of the second service data is the second receiving device, so the second receiving device can receive the second service data.

In the first sending mode, the first receiving device only needs to detect the side-link control information according to the normal detection mechanism. There is no need to increase the number of detections of the first receiving device, which is conducive to simplifying the implementation of the first receiving device and saving power consumption.

2. The second method of sending the first instruction information.

In the second transmission mode, the second sideline control information may include the first indication information. For example, the second sideline control information can schedule the second service data, for example, including the scheduling information of the second service data. Optionally, the scheduling information of the second service data included in the second sideline control information can be used as the first indication. information. In this case, the second sideline control information can schedule the second service data normally, and there is no need to add additional information as the first indication information in the second sideline control information, which can save signaling overhead.

Reference may be made to FIG. 5 , which is a schematic diagram of the location of the second side row control information. Figure 5 takes as an example that the time domain resource included in a resource unit is a time slot, the time domain resource included in a sub-resource unit is an OFDM symbol, and the sidelink control information is carried on the PSSCH. The time slot n1 shown in FIG. 5 is, for example, a time domain resource included in the first resource unit. The 0th OFDM symbol in the time slot is, for example, an AGC symbol. The 1st to 6th OFDM symbols are, for example, used for transmission. The first service data, in which the PSSCH of the first OFDM symbol may carry SCI, where the SCI is, for example, first sideline control information. The 7th OFDM symbol also takes the AGC symbol as an example. The 8th to 12th OFDM symbols are used to transmit the second service data, for example. The PSSCH of the 8th OFDM symbol can carry the SCI, and the SCI is, for example, the second Sideline control information, the second sideline control information may include first indication information. In addition, the last OFDM symbol is, for example, a guard symbol. In Figure 5, time slot n1 and time slot n2 may be adjacent time slots, or the two time slots may be separated by one or more time slots.

For the receiving device (for example, the first receiving device), based on the decoding of the second sideline control information, it can be determined that a sub-resource unit in the first resource unit is scheduled to other service data (for example, the second service data), Thus, it can be determined that these sub-resource units are preempted. In the embodiment of the present application, the detection mechanism of the first receiving device can be changed. For example, the first receiving device originally only detects the SCI at the beginning of the time slot, and can receive the first sideline control information through this detection process. In the embodiment of the present application, in addition to detecting the SCI at the beginning of the time slot, the first receiving device can also detect the SCI on the candidate resources. Through this detection process, the second sideline control information can be received. One resource unit may include at least one candidate resource, and the receiving device may detect SCI on all or part of the candidate resources included in one resource unit. A candidate resource includes, for example, one or more sub-resource units. The candidate resources may be used to transmit the second service data and/or SCI. For example, the second sidelink control information is carried on the candidate resource.

Optionally, candidate resources can be configured by resource pool configuration information. For example, the resource pool configuration information may indicate at least one candidate resource within a resource unit, and the configuration may be applied to different resource units. In the second sending mode, the first receiving device can detect the SCI on the candidate resource; and in the first sending mode or the second sending mode, in addition, the third type of the first indication information will be introduced later. In the sending mode, the second receiving device can detect SCI on the candidate resources. For example, a receiving device detects SCI on the first candidate resource in a resource unit. If SCI is detected, it may no longer detect SCI on subsequent candidate resources in the resource unit. If SCI is not detected or If the decoding of the SCI fails, the SCI can be continuously detected on the next candidate resource in the resource unit until all candidate resources in the resource unit are detected, or until the SCI is detected in the resource unit.

Because the receiving device needs to detect SCI on the candidate resources, optionally, if the number of at least one candidate resource is greater than 1, then two adjacent candidate resources can be separated by m sub-resource units, for example, m is greater than or equal to 2. integer. If the receiving device does not detect SCI on one candidate resource or fails to decode the SCI, it can continue to detect on the next candidate resource. The reason why m sub-resource units are spaced between two adjacent candidate resources is to allow the receiving device enough time to receive and decode the SCI to determine whether to continue detection on the next candidate resource.

In addition, in addition to detecting SCI on the candidate resources, the receiving device also needs to detect SCI at the beginning of the time slot. Then optionally, the first sub-resource unit in a resource unit is the same as the first candidate in the resource unit. Resources can be separated by k sub-resource units, for example k is an integer greater than or equal to 2. Setting k is also to allow enough time for the receiving device to receive and decode the SCI. Optionally, the first sub-resource unit in a resource unit is, for example, the first sub-resource unit of the resource unit in the time domain. For example, the time domain resource included in a resource unit is a time slot, then the time domain resource unit is a time slot. The first sub-resource unit in a slot refers to the OFDM symbol with index 0 in the slot; alternatively, the first sub-resource unit in a resource unit can also be the first sub-resource unit in the resource unit except the AGC symbol. Sub-resource unit, for example, the time domain resource included in a resource unit is a time slot, and the OFDM symbol with index 0 in the time slot is an AGC symbol, then the first sub-resource unit in the time slot except the AGC symbol is Refers to the OFDM symbol with index 1 in this time slot. Taking Figure 5 as an example, Figure 5 takes as an example that the first sub-resource unit in a resource unit is the first sub-resource unit in the resource unit except the AGC symbol. For example, k=3, and OFDM symbol 0 in this time slot is an AGC symbol, then OFDM symbol 4 in this time slot can be used as the first candidate resource in this time slot. In addition, for example, m=3, then OFDM symbol 7 and OFDM symbol 10 in the time slot can be used as two other candidate resources included in the time slot, that is, the time slot can include 3 candidate resources. Optionally, if OFDM symbol 13 is used as a guard symbol, OFDM symbol 13 may not be used as a candidate resource; or, if OFDM symbol 13 is not used as a guard symbol, OFDM symbol 13 may also be used as another candidate resource.

Among them, m and k may be equal or unequal. For example, m can be configured by the access network device. For example, the access network device can be configured through resource pool configuration information, or determined through negotiation between the sending device and the receiving device, or configured by the sending device, or can be predefined through a protocol, etc. k may be configured by the access network device. For example, the access network device may be configured through resource pool configuration information, or may be determined through negotiation between the sending device and the receiving device, or may be configured by the sending device, or may be predefined by a protocol, etc. The configuration methods of m and k can be the same or different.

3. The third method of sending the first instruction information.

The first two sending methods can apply the resource preemption process shown in Figure 3. For example, the MAC layer of the sending device determines the preemption after the first service data is transmitted at the physical layer, and may not be able to determine which resources in the first resource unit are to be preempted when sending the first sideline control information. In this case, the aforementioned the first sending method or the second sending method. It is also possible that the MAC layer of the sending device determines the preemption before the first service data is transmitted at the physical layer (for example, the higher layer triggers a preemption request to the MAC layer, or the MAC layer determines on its own to preempt the resources scheduled for the first service data). transmit the second service data), and when sending the first sideline control information (or at the beginning of the first resource unit), the sub-resource unit that needs to be preempted in the first resource unit can be determined, and when the first service data is in the physical layer If the generation of the first sideline control information and the mapping of the physical layer can be re-completed before transmission, the third transmission method can be applied.

In the third transmission mode, the first sideline control information may include first indication information. Reference may be made to FIG. 6 , which is a schematic diagram of the location of the first side row control information. Figure 6 takes as an example that the time domain resource included in a resource unit is a time slot, the time domain resource included in a sub-resource unit is an OFDM symbol, and the sidelink control information is carried on the PSSCH. The time slot n1 shown in FIG. 6 is, for example, a time domain resource included in the first resource unit. The 0th OFDM symbol in the time slot is, for example, an AGC symbol. The 1st to 6th OFDM symbols are, for example, used for transmission. The first service data, in which the PSSCH of the first OFDM symbol may carry SCI, where the SCI is, for example, first sideline control information, and the second sideline control information may include first indication information. The 7th OFDM symbol also takes the AGC symbol as an example. The 8th to 12th OFDM symbols are used to transmit the second service data, for example. The PSSCH of the 8th OFDM symbol can carry the SCI, and the SCI is, for example, the second Lateral control information. In addition, the last OFDM symbol is, for example, a guard symbol. In Figure 6, time slot n1 and time slot n2 may be adjacent time slots, or the two time slots may be separated by one or more time slots.

The first indication information included in the first sidelink control information may include one or more of the following: starting time domain location information of the second service data in the first resource unit, starting point of the second sidelink control information Time domain location information, the end time domain location of the first service data, the location associated with the second service data and the AGC symbol, the identity of the first receiving device, or the identity of the second receiving device. The time-domain location information (such as the starting time-domain location information or the ending time-domain location information) included in the first sideline control information may be the time information of the time-domain location, or it may also be the sub-section to which the time-domain location belongs. The index of the resource unit. For understanding of the above information, please refer to the corresponding content in the first sending method mentioned above.

For example, the first sideline control information may include scheduling information of the first service data, the identity of the first receiving device, and the identity of the second receiving device. Taking the first sideline control information as an SCI as an example, a new field can be introduced in the SCI, for example, called a second field. The second field can be used to carry (or include) the identity of the second receiving device. For example, the first sideline control information also includes a fourth field, which is used to carry (or include) the identity of the first receiving device. For the receiving device, if the detected SCI includes the second field, it can be determined that the device corresponding to the device identifier carried in the second field is the device that has preempted the resource. In this case, the first sideline control information does not need to indicate the resource of the second service data, which can reduce the overhead of the first sideline control information.

For the first receiving device, if the first sideline control information is detected, it may be determined whether the identification of the receiving device included in the fourth field of the first sideline control information is the identification of the first receiving device, and may Determine the second field packet of the first sideline control information Whether the included identification of the receiving device is the identification of the first receiving device. If the identity of the receiving device included in the fourth field is the identity of the first receiving device, the first receiving device may receive the first service data according to the schedule of the first sideline control information. If the identity of the receiving device included in the second field is not the identity of the first receiving device, for example, the first receiving device and the second receiving device are different devices, the first receiving device may not receive the second service data, or, The first receiving device may no longer detect sideline control information in the first resource unit (for example, no longer detect sideline control information on candidate resources), nor may it receive the second service data. And if the identification of the receiving device included in the second field of the first sideline control information is the identification of the first receiving device, for example, the first receiving device and the second receiving device are the same device, then the first receiving device In a resource unit, sideline control information can be detected on the candidate resource. For example, if the second sideline control information is detected, the second service data can be received according to the scheduling of the second sideline control information.

For the second receiving device, if the first sideline control information is detected and the first sideline control information is determined to be sideline control information in a new format (for example, including the second field), the second receiving device may determine the first sideline control information. Whether the identification of the receiving device included in the second field is the identification of the second receiving device. If the identity of the receiving device included in the second field is not the identity of the second receiving device, the second receiving device may not receive the second service data, or the second receiving device may no longer detect it in the first resource unit. Sidelink control information (for example, sidelink control information is not detected on the candidate resources), and the second service data is not received. And if the identification of the receiving device included in the second field is the identification of the second receiving device, then the second receiving device can detect sideline control information on the candidate resource in the first resource unit, for example, the second sideline is detected. control information, the second service data can be received according to the schedule of the second sideline control information.

For another example, the first sideline control information may include the scheduling information of the first service data, the identity of the first receiving device, and the information of the preempted resources (for example, the starting time domain location information of the second service data, the second sideline One or more of the starting time domain position information of the control information, the ending time domain position of the first service data, or the position of the second service data associated with the AGC symbol). Taking the first sideline control information as an SCI as an example, a new field can be introduced into the SCI, for example, called a third field. The third field can be used to carry (or include) information about preempted resources. For example, the third field may include first indication information, and the first indication information may indicate the preempted resource. For an introduction to the first instruction information, please refer to the previous article. For the receiving device, if the detected SCI includes the third field, the resource location indicated by the third field can be determined.

For the first receiving device, if the first sideline control information is detected, it may be determined whether the identification of the receiving device included in the fourth field of the first sideline control information is the identification of the first receiving device. If the identity of the receiving device included in the fourth field is the identity of the first receiving device, the first receiving device may receive the first service data according to the schedule of the first sideline control information. Since the first sideline control information does not include the identification of the second receiving device and the first receiving device cannot determine the target receiving device corresponding to the preempted resource, the first receiving device can use the preempted resource in the first resource unit. If the sideline control information is detected, for example, the second sideline control information is detected. For example, the second sideline control information includes the identification of the second receiving device, then the first receiving device can determine whether the identification included in the second sideline control information is is the identification of the first receiving device. If the identifier included in the second sideline control information is not the identifier of the first receiving device, for example, the second receiving device and the first receiving device are different devices, the first receiving device may not receive the second service data; or, If the identifier included in the second sideline control information is the identifier of the first receiving device, for example, the second receiving device and the first receiving device are the same device, the first receiving device can schedule according to the second sideline control information. Receive second service data.

For the second receiving device, if the first sideline control information is detected and the first sideline control information is determined to be sideline control information in a new format (for example, including a third field), then the first resource unit may The sideline control information is detected on the preempted resource, and subsequent processing is similar to that of the first receiving device. Alternatively, the second receiving device may not need to determine whether the first sideline control information is sideline control information in a new format, but may adopt the same processing method as the first receiving device.

For another example, the first sideline control information may also include information about the preempted resources and the identification of the second receiving device. For example, the first sideline control information may include a second field and a third field, and the second field may Including the identification of the second receiving device, the third field may include information about the preempted resource. For the first receiving device, the resource location indicated by the third field may be determined, or the identity of the target receiving device included in the second field may be determined. If the first receiving device determines that the identity of the target receiving device included in the second field is different from the identity of the first receiving device (for example, the first receiving device and the second receiving device are different devices), the first receiving device may not need to Detecting side-link control information on the preempted resources can reduce the number of times the first receiving device detects side-link control information and save power consumption of the first receiving device. For the second receiving device, the resource location indicated by the third field may be determined, or the identification of the receiving device included in the second field may be determined. If the second receiving device determines that the identity of the receiving device included in the second field is the same as the identity of the second receiving device, the second receiving device may detect sideline control information on the preempted resource, for example, detecting the second sideline control information, the second receiving device can determine whether the identity of the target receiving device included in the second sideline control information is the identity of the second receiving device. If the identity of the second receiving device is not the identity of the target receiving device included in the second sideline control information, the second receiving device may not receive the second service data; or if the identity of the second receiving device is the identity of the second side The line control information includes the identification of the target receiving device, then The second receiving device may receive the second service data according to the schedule of the second sideline control information.

Regarding the first indication information, the embodiment of the present application provides the above three optional sending methods. In actual application, the corresponding method can be selected according to the situation, which is more flexible, or which method to choose can also be predefined by the protocol.

In this embodiment of the present application, the sending device needs to send the first service data and the second service data, which involves the issue of power control. Optionally, the sending device may use the same power control scheme for the first service data and the second service data. For example, the first service data and the second service data may be sent using the same sending power. For example, the first resource unit includes the first sub-resource unit to the M-th sub-resource unit, and M is a positive integer. In this case, the first sub-resource unit in the first resource unit is a repetition of the second sub-resource unit. , and the starting time domain position of the second service data and/or the second sideline control information is located in the next sub-resource unit after the end of the first service data. Optionally, when the repetition of a sub-resource unit is involved, the sub-resource unit may also be called a sub-time unit. For example, the first sub-resource unit in the first resource unit is a repetition of the second sub-resource unit, which can also be understood as the first sub-time unit in the first time unit is a repetition of the second sub-time unit. Among them, the first sub-resource unit is a repetition of the second sub-resource unit. It can be understood that the contents of the first sub-resource unit and the second sub-resource unit are repeated, or it can be understood that the first sub-resource unit carries AGC symbols. . The starting time domain position of the second service data and/or the second sideline control information is located in the next sub-resource unit after the end of the first service data. It can be understood that after the end of the first service data, the first resource unit There is no AGC symbol in the first resource unit, or it can be understood that there is only one AGC symbol in the first resource unit, which is located on the first sub-resource unit of the first resource unit. For example, refer to FIG. 7 , which is a schematic diagram of the time domain resources included in the first resource unit. For example, the time domain resource included in the first resource unit is a time slot and the sub-resource unit is an OFDM symbol. For example, the time slot is a time slot. Gap n. As can be seen from Figure 7, this time slot only includes one AGC symbol, which is the 0th OFDM symbol. The first service data ends on the 6th OFDM symbol. The next sub-resource unit after the end of the first service data is the 7th OFDM symbol. The 7th OFDM symbol does not carry AGC symbols, but carries the second service. The data and the second sideline control information, that is, the 7th OFDM symbol is the starting time domain position of the second service data and the second sideline control information.

Under this power control scheme, for example, the transmission power of the first service data (or the transmission power of the second service data, in which case they are equal) can use the larger value of the first power and the second power. The first power is, for example, the transmit power corresponding to the first receiving device, and the second power is, for example, the transmit power corresponding to the second receiving device. Optionally, the first power may be determined based on one or more of the first receiving device, the first service data, or the sending device. For example, the first power may be determined based on one or more of the path loss corresponding to the first receiving device, the priority of the first service data, or the path loss corresponding to the sending device. The path loss corresponding to the first receiving device is, for example, the path loss between the sending device and the first receiving device; the path loss corresponding to the sending device is, for example, the path loss between the access network device and the sending device. For example, if the first service data is unicast data, the first power may be determined according to the path loss corresponding to the first receiving device and/or the priority of the first service data. For another example, if the first service data is multicast data or broadcast data, the first power may be determined according to the path loss corresponding to the sending device and/or the priority of the first service data.

The implementation of the second power is also similar. Optionally, the second power may be determined based on one or more of the second receiving device, the second service data, or the sending device. For example, the second power may be determined based on one or more of the path loss corresponding to the second receiving device, the priority of the second service data, or the path loss corresponding to the sending device. The path loss corresponding to the second receiving device is, for example, the path loss between the sending device and the second receiving device; the path loss corresponding to the sending device is, for example, the path loss between the access network device and the sending device. For example, if the second service data is unicast data, the second power may be determined according to the path loss corresponding to the second receiving device and/or the priority of the second service data. For another example, if the second service data is multicast data or broadcast data, the second power may be determined according to the path loss corresponding to the sending device and/or the priority of the second service data.

Or, under this power control scheme, the transmission power of the first service data and the transmission power of the second service data can satisfy the following relationship:
P＝min(max(P1′,P2′),P1″,P2″) (Formula 1)

Among them, P represents the transmission power, P1′ represents the first power, and P2′ represents the second power. P1″ represents the power threshold of the first receiving device, and P2″ represents the power threshold of the second receiving device. max(x,y) means taking the maximum value between a and b, min(x,y) means taking the minimum value between a and b. The power threshold of the receiving device is, for example, the saturated power input to the AGC of the receiving device. It can be understood that when a sending device sends data to a receiving device, the sending power should be less than or equal to the power threshold of the receiving device.

Or, under this power control scheme, the transmission power of the first service data and the transmission power of the second service data can satisfy the following relationship:
P＝min(max(P1′,P2′),P2″) (Formula 2)

For explanations of parameters, please refer to the previous article. If the power threshold corresponding to the second receiving device is larger and the power threshold corresponding to the first receiving device is smaller, if formula 1 is followed, the final selected transmit power will be smaller, which may affect the transmission of the second service data, that is, , Only smaller transmission power can be used to send the second service data, which may affect the transmission quality of the second service data. In order to ensure the transmission of high-priority services, Formula 2 may not consider the power threshold of the first receiving device, but only consider the power threshold of the second receiving device to ensure the transmission quality of the second service data as much as possible.

Alternatively, the sending device may adopt different power control schemes for the first service data and the second service data. For example, the first service data and the second service data may be sent using respective sending powers. In this case, the transmission power of the first service data and the transmission power of the second service data may or may not be equal. For example, the first resource unit includes the first sub-resource unit to the M-th sub-resource unit, then the first sub-resource unit in the first resource unit is a repetition of the second sub-resource unit (or in other words, the first sub-resource unit Duplicates the content of the second sub-resource unit), and the N-th sub-resource unit in the first resource unit is a duplication of the N+1-th sub-resource unit (or in other words, the N-th sub-resource unit and the N+1-th sub-resource The content of the unit is repeated), N and M are both positive integers, and N is less than M. Optional, when it comes to the repetition of sub-resource units, the sub-resource unit can also be called a sub-time unit. For example, the first sub-time unit within the first time unit is a repetition of the second sub-time unit, and the N-th sub-time unit is a repetition of the N+1-th sub-time unit. It can be understood that the first resource unit may include two AGC symbols, which are carried in the first sub-resource unit and the N-th sub-resource unit respectively. The N+1th sub-resource unit is the starting sub-resource unit of the second service data and/or the second sideline control information. For example, this is the case in either Figure 4 or Figure 5. The first sub-resource unit is, for example, the 0th OFDM symbol in the first time slot of Figure 4, or the 0th OFDM symbol in the time slot shown in Figure 5. OFDM symbol; the Nth sub-resource unit is, for example, the 7th OFDM symbol in the first time slot in Figure 4, or the 7th OFDM symbol in the time slot shown in Figure 5.

For example, the transmission power of the first service data and the transmission power of the second service data can satisfy the following relationship:

Among them, P _th represents the AGC dynamic range tolerance threshold. sign(x) is a sign function, for example, if x is greater than 0, then sign(x)=1; if x is equal to 0, then sign(x)=0; if x is less than 0, then sign(x)=-1. |y| means taking the absolute value of y. For explanations of other parameters, please refer to the previous article.

Alternatively, the transmission power of the first service data and the transmission power of the second service data may satisfy the following relationship:

For explanations of the parameters, please refer to the previous article.

If the difference between the first power and the second power is small, for example, the absolute value of the difference between the two is less than the AGC dynamic range tolerance threshold, the first power can be used to send the first service data, and the second power can be used to send the second service data, so that the transmission power of the two service data can meet the needs of the respective receiving devices. If the difference between the first power and the second power is large, for example, the absolute value of the difference between the two is greater than the AGC dynamic range tolerance threshold, the two AGC symbols in the first resource unit may not indicate a transmission power with an excessive difference. , then the sending device can make corresponding adjustments to reduce the difference between the two sending powers, and use the adjusted sending power to send service data.

After receiving the service data, the receiving device can send feedback information to the sending device to indicate the success or failure of receiving the service data. For example, one kind of feedback information is hybrid automatic repeat request (HARQ)-response (ACK). In sideline communication, the receiving device can determine the sequence number of the feedback channel, and the resource location of the feedback channel can be determined based on the sequence number. The feedback channel is, for example, a physical sidelink feedback channel (PSFCH). If according to the existing solution, since the first service data and the second service data are transmitted in the same resource unit, the sequence number determined by the first receiving device and the sequence number determined by the second receiving device may be the same, which may cause PSFCH A conflict occurs. In view of this, embodiments of the present application provide a new solution for determining the resource unit where the PSFCH is located.

For example, the first receiving device may determine a resource unit for sending feedback information according to the first value. The first resource unit may be associated with multiple resource units for transmitting feedback information, and the first receiving device may determine a resource unit from the multiple resource units according to the first value to send the feedback information, for example, the first receiving device determines is the third resource unit, and what is sent is the first feedback information; the second receiving device can also determine a resource unit from the plurality of resource units according to the second value to send the feedback information, for example, the second receiving device determines The fourth resource unit sends the second feedback information. Among them, the resource unit used to transmit feedback information may appear periodically. For example, the resource unit including PSFCH may appear periodically, then it can be based on the end position (or starting position) of the first resource unit in the time domain. The second offset is added to obtain a time domain position, and the resource unit for transmitting feedback information that is closest to the time domain position can be used as the resource unit for transmitting feedback information associated with the first resource unit. The second offset is predefined, for example, by the protocol. For example, the frequency domain resource of the first resource unit carries the PSSCH, and the frequency domain resources of multiple resource units can carry the PSFCH. It can also be understood that the PSSCH is associated with multiple PSFCHs.

For example, the first value is configured by the resource pool configuration information; or the first value can also be determined through negotiation between the sending device and the second receiving device, for example, when the sending device and the second receiving device establish a communication connection; or the first value can also be determined through negotiation. Can be configured by the sending device, or can be predefined by the protocol. For example, the second value is configured by the resource pool configuration information; or the second value can also be determined through negotiation between the sending device and the second receiving device, for example, when the sending device and the second receiving device establish a communication connection; or the second value can also be determined through negotiation. Can be configured by the sending device, or can be predefined by the protocol. The first value and the second value may be configured in the same manner, for example, both are configured by the resource pool configuration information, or the first value and the second value may be configured in different ways, with no specific limitation.

Optionally, the location information of the third resource unit may satisfy the following relationship:
i＝(P _ID +M _ID +C)mod(R1)+A (Formula 5)

Wherein, i is associated with the location information of the third resource unit, for example, i is the sequence number of the PSFCH determined by the first receiving device. P _ID represents the source identification of the sending device. M _ID represents the first protocol layer of the first receiving device and/or the identity configured by the sending device for the first receiving device, or M _ID =0. R1 represents the first value, and mod represents the modulo operation. A=0, or A=R2, R2 represents the second value, and C is a non-negative integer, which can be determined according to the resource pool configuration information, or negotiated when the sending device establishes a communication connection with the second receiving device.

Optionally, the location information of the fourth resource unit may satisfy the following relationship:
j＝(P _ID +M _ID +C)mod(R2)+B (Formula 6)

Where, j is associated with the location information of the fourth resource unit, for example, j is the sequence number of the PSFCH determined by the second receiving device. P _ID represents the source identification of the sending device. M _ID represents the second protocol layer of the second receiving device and/or the identity configured by the sending device for the second receiving device, or M _ID =0. For example, R1+R2=R, and R may be determined based on the resource pool configuration information and the first resource unit. B=R1, or, B=0. Optionally, if A=0, then B=R1; or, if B=0, then A=R2. In this way, the third resource unit and the fourth resource unit may be different from the same resource unit.

It can be seen that since the first receiving device and the second receiving device determine the resource units in different ways, the probability that the determined resource units are the same is reduced, and the probability of PSFCH collision is reduced.

In the embodiment of this application, the sending device can send the first service data and the second service data in the first resource unit. For example, the priority of the second service data is higher than the priority of the first service data, which is equivalent to the sending device can seize the first service data. The resources originally allocated to the first service data in a resource unit are used to send the second service data, so that the second service data can be transmitted in time and the transmission delay is reduced. In addition, the sending device can indicate the resource preemption situation to the receiving device, so that the first receiving device can clearly understand that resources are preempted, thereby making it clear which data on the resources are the first service data, which can improve the success rate of data reception.

Figure 8 shows a schematic structural diagram of a communication device provided by an embodiment of the present application. The communication device 800 may be the sending device or the circuit system of the sending device in the embodiment shown in FIG. 2, and is used to implement the method corresponding to the sending device in the above method embodiment. Alternatively, the communication device 800 may be the circuit system of the first receiving device in the embodiment shown in FIG. 2, used to implement the method corresponding to the first receiving device in the above method embodiment. Alternatively, the communication device 800 may be the circuit system of the second receiving device in the embodiment shown in FIG. 2, used to implement the method corresponding to the first receiving device in the above method embodiment. For specific functions, please refer to the description in the above method embodiment. Among them, for example, one circuit system is a chip system.

The communication device 800 includes at least one processor 801 . The processor 801 can be used for internal processing of the device to implement certain control processing functions. Optionally, processor 801 includes instructions. Optionally, processor 801 can store data. Alternatively, different processors may be independent devices, may be located in different physical locations, and may be located on different integrated circuits. Alternatively, different processors may be integrated into one or more processors, for example, on one or more integrated circuits.

Optionally, communication device 800 includes one or more memories 803 for storing instructions. Optionally, the memory 803 may also store data. The processor and memory can be provided separately or integrated together.

Optionally, the communication device 800 includes a communication line 802 and at least one communication interface 804. Among them, because the memory 803, the communication line 802 and the communication interface 804 are all optional, they are all represented by dotted lines in FIG. 8 .

Optionally, the communication device 800 may also include a transceiver and/or an antenna. The transceiver may be used to send information to or receive information from other devices. The transceiver may be called a transceiver, a transceiver circuit, an input/output interface, etc., and is used to implement the transceiver function of the communication device 800 through an antenna. Optionally, the transceiver includes a transmitter and a receiver. For example, the transmitter can be used to generate a radio frequency signal from a baseband signal, and the receiver can be used to convert the radio frequency signal into a baseband signal.

The processor 801 may include a general central processing unit (CPU), a microprocessor, an application specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present application. circuit.

Communication line 802 may include a path that carries information between the above-mentioned components.

Communication interface 804 uses any device such as a transceiver for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), Cable access network, etc.

Memory 803 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (random access memory (RAM)) or other type that can store information and instructions. A dynamic storage device can also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disk storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be used by a computer Any other medium for access, but not limited to this. The memory 803 may exist independently and be connected to the processor 801 through the communication line 802. Alternatively, the memory 803 can also be integrated with the processor 801 .

Among them, the memory 803 is used to store computer execution instructions for executing the solution of the present application, and is controlled by the processor 801 for execution. The processor 801 is configured to execute computer execution instructions stored in the memory 803, thereby implementing the steps performed by the sending device described in the embodiment shown in Figure 2, or to implement the first reception described in the embodiment shown in Figure 2 The steps performed, or the steps performed to implement the second reception described in the embodiment shown in FIG. 2 .

Optionally, the computer-executed instructions in the embodiments of the present application may also be called application codes, which are not specifically limited in the embodiments of the present application.

In specific implementation, as an embodiment, the processor 801 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 8 .

In specific implementation, as an embodiment, the communication device 800 may include multiple processors, such as the processor 801 and the processor 805 in FIG. 8 . Each of these processors may be a single-CPU processor or a multi-CPU processor. A processor here may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).

When the device shown in Figure 8 is a chip, such as a chip of a sending device, a chip of a first receiving device, or a chip of a second receiving device, then the chip includes a processor 801 (which may also include a processor 805), Communication line 802 and communication interface 804, optionally, may include memory 803. Specifically, the communication interface 804 may be an input interface, a pin or a circuit, etc. Memory 803 may be a register, cache, etc. The processor 801 and the processor 805 may be a general CPU, a microprocessor, an ASIC, or one or more integrated circuits for controlling program execution of the communication method of any of the above embodiments.

Embodiments of the present application can divide the device into functional modules according to the above method examples. For example, each functional module can be divided into corresponding functional modules, or two or more functions can be integrated into one processing module. The above integrated modules can be implemented in the form of hardware or software function modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical function division. In actual implementation, there may be other division methods. For example, in the case of dividing each functional module corresponding to each function, FIG. 9 shows a schematic diagram of a device. The device 900 may be the sending device or the first receiving device or the second receiving device involved in the above method embodiments. The device is either a chip in the sending device or a chip in the first receiving device or a chip in the second receiving device. The device 900 includes a sending unit 901, a processing unit 902 and a receiving unit 903.

It should be understood that the device 900 can be used to implement the steps performed by the sending device or the first receiving device or the second receiving device in the communication method of the embodiment of the present application. For relevant features, refer to the embodiment shown in Figure 2 above. Here No longer.

Optionally, the functions/implementation processes of the sending unit 901, the receiving unit 903 and the processing unit 902 in Figure 9 can be implemented by the processor 801 in Figure 8 calling computer execution instructions stored in the memory 803. Alternatively, the function/implementation process of the processing unit 902 in Figure 9 can be implemented by the processor 801 in Figure 8 calling the computer execution instructions stored in the memory 803. The functions/implementation of the sending unit 901 and the receiving unit 903 in Figure 9 The process can be implemented through the communication interface 804 in Figure 8.

Optionally, when the device 900 is a chip or a circuit, the functions/implementation processes of the sending unit 901 and the receiving unit 903 can also be implemented through pins or circuits.

This application also provides a computer-readable storage medium, which stores a computer program or instructions. When the computer program or instructions are run, the sending device or the first receiving device or the The method executed by the second receiving device. In this way, the functions described in the above embodiments can be implemented in the form of software functional units and sold or used as independent products. Based on this understanding, the technical solution of the present application essentially or contributes to the technical solution or the part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a number of instructions. so that a computer device (that can All or part of the steps of the methods described in various embodiments of this application can be executed using a personal computer, server, or network device, etc. Storage media include: U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk and other media that can store program code.

This application also provides a computer program product. The computer program product includes: computer program code. When the computer program code is run on a computer, it causes the computer to execute any of the foregoing method embodiments by the sending device or the first receiving device. or a method performed by a second receiving device.

Embodiments of the present application also provide a processing device, including a processor and an interface; the processor is configured to execute the method executed by the sending device or the first receiving device or the second receiving device involved in any of the above method embodiments.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, e.g., the computer instructions may be transferred from a website, computer, server, or data center Transmission to another website, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more available media integrated. The available media may be magnetic media (eg, floppy disk, hard disk, magnetic tape), optical media (eg, DVD), or semiconductor media (eg, solid state disk (SSD)), etc.

The various illustrative logic units and circuits described in the embodiments of the present application can be programmed by general-purpose processors, digital signal processors (digital signal processors, DSPs), application specific integrated circuits (ASICs), and field programmable A field-programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to implement or operate the functions described. The general-purpose processor may be a microprocessor. Alternatively, the general-purpose processor may also be any conventional processor, controller, microcontroller or state machine. A processor may also be implemented as a combination of computing devices, such as a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors combined with a digital signal processor core, or any other similar configuration. accomplish.

The steps of the method or algorithm described in the embodiments of this application can be directly embedded in hardware, a software unit executed by a processor, or a combination of the two. The software unit can be stored in RAM, flash memory, ROM, erasable programmable read-only memory (EPROM), EEPROM, register, hard disk, removable disk, CD-ROM or any other form in the field in the storage medium. For example, the storage medium can be connected to the processor, so that the processor can read information from the storage medium and can store and write information to the storage medium. Optionally, the storage medium can also be integrated into the processor. The processor and the storage medium can be installed in the ASIC, and the ASIC can be installed in the terminal device. Optionally, the processor and the storage medium may also be provided in different components in the terminal device.

These computer program instructions may also be loaded onto a computer or other programmable data processing device, causing a series of operating steps to be performed on the computer or other programmable device to produce computer-implemented processing, thereby executing on the computer or other programmable device. Instructions provide steps for implementing the functions specified in a process or processes of a flowchart diagram and/or a block or blocks of a block diagram.

The content in the various embodiments of this application can be referenced to each other. If there are no special instructions or logical conflicts, the terminology and/or descriptions between different embodiments are consistent and can be referenced to each other. The technical features in different embodiments New embodiments can be formed based on their internal logical relationships.

It can be understood that in the embodiment of the present application, the sending device or the first receiving device or the second receiving device can perform some or all of the steps in the embodiment of the present application. These steps or operations are only examples. In the embodiment of the present application, the Other operations or variations of various operations can be performed. In addition, various steps may be performed in a different order than those presented in the embodiments of the present application, and it may not be necessary to perform all operations in the embodiments of the present application.

Claims

A communication method, characterized in that it is applied to a sending device, and the method includes:

Send first sideline control information and first service data to the first receiving device in the first resource unit, where the first sideline control information is associated with the first service data;

The first resource unit sends second sideline control information and second service data to the second receiving device, wherein the second sideline control information is associated with the second service data, and the second service data is The priority is higher than the priority of the first service data, and the resource location of the second sideline control information is indicated by the first sideline control information or indicated by the resource pool configuration information.
The method according to claim 1, characterized in that sending second sideline control information and second service data in the first resource unit includes:

After sending the first sideline control information and the first service data, the second sideline control information and the second service data are sent in the first resource unit.
The method according to claim 1 or 2, characterized in that the second side row control information includes first indication information, or the first side row control information includes first indication information, wherein the second side row control information includes first indication information. An indication information is used to indicate that some sub-resource units of the first resource unit are not used for transmission to the first receiving device.
The method according to claim 3, characterized in that the first indication information included in the first sidelink control information includes one or more of the following: the second resource unit in the first resource unit. The starting time domain location information of the service data, the starting time domain location information of the second sideline control information, the identification of the first receiving device, or the identification of the second receiving device.
The method according to claim 1 or 2, characterized in that, the method further includes:

The third side row control information and the third service data are sent in the second resource unit, the third service data includes the first service data, the third side row control information is associated with the third service data, and the The third sideline control information includes first indication information, the first indication information is used to indicate that some sub-resource units of the first resource unit are not used for transmission to the first receiving device, and the second resource unit is In the time domain, it is located after the end of the first resource unit.
The method according to claim 5, characterized in that the first indication information includes starting time domain location information of the second service data in the first resource unit, and/or the second side The starting time domain position information of the row control information.
The method according to any one of claims 1 to 6, characterized in that the resource pool configuration information is used to indicate at least one candidate resource, and the at least one candidate resource is used to send the second service data, and the The resource where the second sidelink control information is located belongs to the at least one candidate resource.
The method according to any one of claims 1 to 7, characterized in that the first resource unit includes a first sub-resource unit to an M-th sub-resource unit, where M is a positive integer, and the first The content of the sub-resource unit overlaps with that of the second sub-resource unit, and the starting time domain position of the second service data and/or the second sideline control information is located in the next sub-resource after the end of the first service data. unit.
The method according to claim 8, characterized in that the transmission power of the first service data and the transmission power of the second service data are both larger values of the first power and the second power, wherein the The first power is determined based on one or more of the path loss corresponding to the first receiving device, the priority of the first service data, or the path loss corresponding to the sending device, and the second power It is determined based on one or more of the path loss corresponding to the second receiving device, the priority of the second service data, or the path loss corresponding to the sending device.
The method according to claim 8, characterized in that the transmission power of the first service data and the transmission power of the second service data satisfy the following relationship:
P＝min(max(P1′,P2′),P1″,P2″)

Wherein, P represents the transmission power, P1′ represents the first power, and P2′ represents the second power. The first power is the transmission power corresponding to the first receiving device, and the second power is the transmission power corresponding to the second receiving device. The transmission power corresponding to the receiving device, P1″ represents the power threshold of the first receiving device, P2″ represents the power threshold of the second receiving device, max represents the maximum value, and min represents the minimum value.
The method according to any one of claims 1 to 7, characterized in that the first resource unit includes a first sub-resource unit to an M-th sub-resource unit, and the first sub-resource unit and the second sub-resource unit The content of the resource unit is repeated, and the N-th sub-resource unit and the N+1-th sub-resource unit are repeated, and the N+1-th sub-resource unit is the second service data and/or the second side row. The starting sub-resource unit of the control information, N and M are both positive integers, and N is less than M.
The method according to claim 11, characterized in that:

The transmission power of the first service data and the transmission power of the second service data satisfy the following relationship:

Or, the transmission power of the first service data and the transmission power of the second service data satisfy the following relationship:

Wherein, P1 represents the transmission power of the first service data, P2 represents the transmission power of the second service data, P1′ represents the first power, P2′ represents the second power, P th represents the AGC dynamic range tolerance threshold, sign is a symbolic function.
The method according to any one of claims 1 to 12, characterized in that the method further includes:

In the third resource unit, first feedback information is received from the first receiving device, and the first feedback information is used to indicate whether the first service data is received successfully, wherein the third resource unit is based on the first value. Determined from a plurality of resource units, the plurality of resource units are resource units associated with the first resource unit and used for transmitting feedback information.
The method according to claim 13, characterized in that the third resource unit is determined from a plurality of resource units according to the first value, including:

The position information of the third resource unit has the following relationship: i=(P ID +M ID +C)mod(R1)+A;

Wherein, i is associated with the location information of the third resource unit, P ID represents the source identifier of the sending device, and M ID represents the destination identifier configured for the first receiving device by the first protocol layer of the first receiving device. , R1 represents the first value, and C is a non-negative integer.
The method according to claim 13 or 14, characterized in that the method further includes:

In the fourth resource unit, second feedback information is received from the second receiving device, and the second feedback information is used to indicate whether the second service data is received successfully, wherein the fourth resource unit is based on the second value. Determined from a plurality of resource units, the plurality of resource units are resource units associated with the first resource unit and used for transmitting feedback information.
The method of claim 15, wherein the fourth resource unit is determined from a plurality of resource units according to the second value, including:

The location information of the fourth resource unit satisfies the following relationship:
i=(P ID +M ID +C)mod(R2)+B;

Wherein, i is associated with the location information of the fourth resource unit, P ID represents the source identifier of the sending device, and M ID represents the destination identifier configured for the second receiving device by the second protocol layer of the second receiving device. , R2 represents the second value, and C is a non-negative integer.
The method according to claim 16, characterized in that:
A=0, B=R1; or,
B=0, A=R2.
A communication method, characterized in that it is applied to a first receiving device, and the method includes:

The first resource unit receives first sideline control information and first service data from the sending device, wherein the first sideline control information is associated with the first service data, and the first receiving device is the first The target receiving device for business data;

When the first resource unit receives second sideline control information from the sending device, it is determined according to the second sideline control information that some sub-resource units of the first resource unit are not used to send data to the first receiving device. Transmission, wherein the second sideline control information is associated with second service data, the priority of the second service data is higher than the priority of the first service data, and the resource location of the second sideline control information is given by The first sidelink control information indicates, or indicates through resource pool configuration information; or,

In the second resource unit, third sideline control information is received from the sending device. The third sideline control information includes first indication information, and the first indication information is used to indicate part of the first resource unit. The resource unit is not used for transmission to the first receiving device, and the second resource unit is located after the end of the first resource unit in the time domain; or,

The first sideline control information includes first indication information, and the first indication information is used to indicate that some sub-resource units of the first resource unit are not used for transmission to the first receiving device.
The method according to claim 18, characterized in that the first indication information included in the first sidelink control information includes one or more of the following: the second resource unit in the first resource unit. The starting time domain location information of the service data, the starting time domain location information of the second sideline control information, the identification of the first receiving device, or the identification of the second receiving device, wherein the second receiving device A target receiving device for the second service data.
The method according to claim 18, characterized in that the first indication information included in the third sidelink control information includes a starting time domain position of the second service data in the first resource unit. information, and/or the start of the second sideline control information Time domain location information.
The method according to any one of claims 18 to 20, characterized in that receiving the second sideline control information from the sending device in the first resource unit includes:

Detecting the second sideline control information on at least one candidate resource indicated by the resource pool configuration information, the at least one candidate resource being used to send the second sideline control information and/or the second service data .
The method according to any one of claims 18 to 21, characterized in that the first resource unit includes a first sub-resource unit to an M-th sub-resource unit, and the first sub-resource unit and the second sub-resource unit The content of the resource unit is repeated, and the starting time domain position of the second service data and/or the second sideline control information is located in the next sub-resource unit after the end of the first service data, and M is a positive integer.
The method according to any one of claims 18 to 21, characterized in that the first resource unit includes a first sub-resource unit to an M-th sub-resource unit, and the first sub-resource unit and the second sub-resource unit The content of the resource unit is repeated, and the N-th sub-resource unit and the N+1-th sub-resource unit are repeated, and the N+1-th sub-resource unit is the second service data and/or the second side row. The starting sub-resource unit of the control information, N and M are both positive integers, and N is less than M.
The method according to any one of claims 18 to 23, characterized in that the method further includes:

In the third resource unit, first feedback information is sent to the sending device, and the first feedback information is used to indicate whether the first service data is received successfully, wherein the third resource unit is obtained from multiple sources according to the first value. Determined among the resource units, the plurality of resource units are resource units associated with the first resource unit and used for transmitting feedback information.
The method according to claim 24, characterized in that the third resource unit is determined from a plurality of resource units according to the first value, including:

The position information of the third resource unit has the following relationship: i=(P ID +M ID +C)mod(R1)+A;

Wherein, i is associated with the location information of the third resource unit, P ID represents the source identifier of the sending device, and M ID represents the destination identifier configured for the first receiving device by the first protocol layer of the first receiving device. , R1 represents the first value, and C is a non-negative integer.
The method according to claim 25, characterized in that A=0, or A=R2, and R2 represents the second value.
A communication method, characterized in that it is applied to a second receiving device, and the method includes:

After the first resource unit receives the second sideline control information and the second service data from the sending device, the second sideline control information and the second service data are located after the first sideline control information, the first side The row control information is associated with the first service data, the target receiving device of the first service data is the first receiving device, the target receiving device of the second service data is the second receiving device, and the second side row control The information is associated with the second service data, the priority of the second service data is higher than the priority of the first service data, and the resource location of the second sideline control information is determined by the first sideline control information. Indicated, or indicated by resource pool configuration information.
The method of claim 27, wherein the second sideline control information includes first indication information, or the first sideline control information includes first indication information, wherein the first indication The information is used to indicate that some sub-resource units of the first resource unit are not used for transmission to the first receiving device.
The method according to claim 27, characterized in that the first sidelink control information includes first indication information, and the first indication information includes one or more of the following: all data in the first resource unit The starting time domain location information of the second service data, the starting time domain location information of the second sideline control information, the identification of the first receiving device, or the identification of the second receiving device, wherein the first receiving device A receiving device is a target receiving device for the first service data, and the second receiving device is a target receiving device for the second service data.
The method according to any one of claims 27 to 29, characterized in that receiving the second sideline control information from the sending device in the first resource unit includes:

Detecting the second sideline control information on at least one candidate resource indicated by the resource pool configuration information, the at least one candidate resource being used to send the second sideline control information and/or the second service data .
The method according to any one of claims 27 to 30, characterized in that the first resource unit includes a first sub-resource unit to an M-th sub-resource unit, and the first sub-resource unit and the second sub-resource unit The content of the resource unit is repeated, and the starting time domain position of the second service data and/or the second sideline control information is located in the next sub-resource unit after the end of the first service data, and M is a positive integer.
The method according to claim 31, characterized in that, the transmission power of the first service data and the transmission power of the second service data are both the larger value of the first power and the second power, and the The first power is the transmit power corresponding to the first receiving device, and the second power is the transmit power corresponding to the second receiving device.
The method according to any one of claims 27 to 30, characterized in that the first resource unit includes a first sub-resource unit to an M-th sub-resource unit, and the first sub-resource unit and the second sub-resource unit The content of the resource unit is repeated, and the N-th sub-resource unit and the N+1-th sub-resource unit are repeated, and the N+1-th sub-resource unit is the second service data and/or the second side row. The starting sub-resource unit of the control information, N and M are both positive integers, and N is less than M.
The method according to any one of claims 27 to 33, characterized in that the method further includes:

In the fourth resource unit, second feedback information is sent to the sending device, and the second feedback information is used to indicate whether the second service data is received successfully, wherein the fourth resource unit is obtained from multiple sources according to the second value. Determined among the resource units, the plurality of resource units are resource units associated with the first resource unit and used for transmitting feedback information.
The method of claim 34, wherein the fourth resource unit is determined from a plurality of resource units according to the second value, including:

The location information of the fourth resource unit satisfies the following relationship: i=(P ID +M ID +C)mod(R2)+B;

Wherein, i is associated with the location information of the fourth resource unit, P ID represents the source identifier of the sending device, and M ID represents the destination identifier configured for the second receiving device by the second protocol layer of the second receiving device. , R2 represents the second value, and C is a non-negative integer.
The method according to claim 35, characterized in that B=0, or B=R1, and R1 represents the first value.
A communication device, characterized in that it includes a processor and a memory, the memory is coupled to the processor, and the processor is used to execute the method according to any one of claims 1 to 17, or to execute the method as described in any one of claims 1 to 17. The method according to any one of claims 18 to 26, or used to perform the method according to any one of claims 27 to 36.
A computer-readable storage medium, characterized in that the computer-readable storage medium is used to store a computer program. When the computer program is run on a computer, it causes the computer to execute any one of claims 1 to 17. The method may cause the computer to perform the method described in any one of claims 18 to 26, or cause the computer to perform the method described in any one of claims 27 to 36.
A chip system, characterized in that the chip system includes:

A processor and an interface. The processor is configured to call and run instructions from the interface. When the processor executes the instructions, the method as claimed in any one of claims 1 to 17 is implemented, or the method as claimed in the claim is implemented. The method according to any one of claims 18 to 26, or the method according to any one of claims 27 to 36.
A computer program product, characterized in that the computer program product includes a computer program, which when the computer program is run on a computer, causes the computer to execute the method according to any one of claims 1 to 17, or The computer is caused to perform the method as described in any one of claims 18 to 26, or the computer is caused to perform the method as described in any one of claims 27 to 36.