WO2022213847A1

WO2022213847A1 - Resource overlapping processing method and apparatus

Info

Publication number: WO2022213847A1
Application number: PCT/CN2022/083750
Authority: WO
Inventors: 杨帆; 黎超; 黄海宁; 张天虹
Original assignee: 华为技术有限公司
Priority date: 2021-04-06
Filing date: 2022-03-29
Publication date: 2022-10-13
Also published as: CN115190612A

Abstract

The present application provides a resource overlapping processing method and apparatus. The method comprises: a first auxiliary terminal device obtains sidelink control information of a first terminal device, the sidelink control information being used for indicating a first resource reserved by the first terminal device; the first auxiliary terminal device also obtains sidelink control information of a second terminal device, the sidelink control information indicating a second resource reserved by the second terminal device; the first resource overlaps with the second resource, i.e., the first resource conflicts with the second resource, and when a preset condition is satisfied, for example, the sidelink control information of the second terminal device is more important than the sidelink control information of the first terminal device, the first auxiliary terminal device sends to the first terminal device indication information for indicating that the first resource overlaps with other resources or indicating the first terminal device performing resource reselection. A sidelink resource conflict is fed back by means of an auxiliary terminal device, so that the sidelink resource conflict can be effectively avoided, thereby improving the quality of sidelink communication.

Description

A method and apparatus for handling resource overlap

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority of the Chinese patent application filed on April 6, 2021 with the application number of 202110366701.7 and the application title of "A method and device for processing resource overlap", the entire contents of which are incorporated herein by reference Applying.

technical field

The present application relates to the field of communication technologies, and in particular, to a method and apparatus for processing resource overlap.

Background technique

The 3rd generation partnership project (3GPP) introduced vehicle to vehicle (V2V) and vehicle to everything (vehicle to everything) in systems such as new radio (NR) systems. V2X) technology in order to extend the 3GPP platform to the automotive industry. In NR version 16 (release 16, Rel-16) V2X, two resource allocation methods are supported, one is resource allocation mode-1 (RA mode-1) based on network device scheduling, and the other is resource allocation mode-1 (RA mode-1) based on network device scheduling. One is resource allocation mode-2 (RA mode-2) based on perception and selection on preconfigured resources. When using RA mode-1 to allocate resources, the terminal device transmits the physical sidelink control channel (PSCCH) and/or the physical sidelink shared channel (physical sidelink shared channel) on the sidelink (sidelink), PSSCH) resources are scheduled and controlled by network equipment. When using RA mode-2 to allocate resources, the terminal device senses the resources available on the side link on the resources configured by the network device or on the pre-defined resources, and selects the resources for data transmission from the sensed available resources.

However, when using RA mode-2, if two different terminal devices transmit in the same time slot, they cannot perceive each other's resource occupancy. If the resources occupied by the two terminal devices when sending data are partially overlapping Or all overlapping will lead to resource conflict, and the receiver cannot correctly receive data on the overlapping resources, which will reduce the efficiency of the entire communication system.

SUMMARY OF THE INVENTION

The present application provides a method and apparatus for handling resource overlap, so as to reduce resource conflicts and improve the quality of communication resources.

In a first aspect, the present application provides a method for processing resource overlap. In the method, a first auxiliary terminal device obtains first information from the first terminal device, and the first information is used to indicate the first terminal device reserved by the first terminal device. a resource; the first auxiliary terminal device obtains second information from the second terminal device, and the second information is used to indicate the second resource reserved by the second terminal device; the first resource overlaps with the second resource and meets the preset condition When the first auxiliary terminal device sends third information or fourth information to the first terminal device, the third information is used to indicate that the first resource overlaps with other resources, and the fourth information is used to instruct the first terminal device to perform resource reselection .

Through the above method, the first resource overlaps with the second resource, and when the preset condition is satisfied, the first auxiliary terminal device sends indication information to the first terminal device to indicate that the first resource overlaps with other resources, or to indicate that the first resource overlaps with other resources. The terminal device performs resource reselection, so that the first terminal device can determine that the first resource is unavailable, so that data transmission is no longer performed through the first resource, which can effectively avoid sideline resource conflict, thereby improving the sideline communication quality.

In a second aspect, the present application provides a method for handling resource overlap. In the method, a first auxiliary terminal device obtains first information from the first terminal device, and the first information is used to indicate the first terminal device reserved by the first terminal device. A resource; the first auxiliary terminal device obtains second information from the second terminal device, and the second information is used to indicate the second resource reserved by the second terminal device; the first resource overlaps with the second resource, and the first auxiliary terminal The device sends third information or fourth information to the first terminal device, where the third information is used to indicate that the first resource overlaps with other resources, and the fourth information is used to instruct the first terminal device to perform resource reselection; wherein, in the time domain above, the start time of the third resource that carries the third information or the fourth information, the end time of the resource that carries the first message associated with the first information, and the end time of the resource that carries the second message associated with the second information The time intervals between them are all greater than or equal to the first duration.

With the above method, the first resource overlaps with the second resource, and the first auxiliary terminal device sends indication information to the first terminal device to indicate that the first resource overlaps with other resources, or instructs the first terminal device to perform resource reselection, This enables the first terminal device to determine that the first resource is unavailable, so that data transmission is no longer performed through the first resource, which can effectively avoid sideline resource conflict, thereby improving the sideline communication quality. At the same time, since the third resource used by the first auxiliary terminal device is greater than or equal to the first duration in the time domain, the end time of the resource carrying the first message and the end time of the resource carrying the second message, it can ensure that the first The auxiliary terminal device can have enough time to parse the first information and the second information.

With reference to the first aspect, in a possible design, the preset condition includes at least one of the following: Condition 1, in the time domain, the start time of the third resource carrying the third information or the fourth information, and the The time interval between the end time of the resource of the first message associated with the first message and the end time of the resource of the second message associated with the second message is greater than or equal to the first duration; Condition 2, in the time domain, the third The time interval between the end time of the resource and the start time of the first resource is greater than or equal to the second duration, and/or the time interval between the end time of the third resource and the start time of the second resource is greater than or equal to the second time interval duration.

Through the above method, when the first condition is satisfied, since the third resource used by the first auxiliary terminal device is greater than or equal to the first The time length can be ensured that the first auxiliary terminal device can have enough time to parse the first information and the second information. When the second condition is satisfied, it can be ensured that the first terminal device can have enough time to parse the third information or the fourth information after receiving the pending third information or the fourth information, and have enough time to reselect the resource.

With reference to the first aspect, in a possible design, the preset condition includes at least one of the following conditions: the priority of the first message associated with the first information is less than or equal to the priority of the second message associated with the second information; the first The priority of the message is greater than the priority of the second message, and it is determined that the second auxiliary terminal device corresponding to the second terminal device does not send information indicating resource overlap or send information indicating resource retransmission to the second terminal device; the second terminal device The device does not have a corresponding auxiliary terminal device; the priority of the first message is equal to the priority of the second message, and the third resource is located before the fourth resource, and the fourth resource is used to carry information indicating resource overlap to the second terminal device or Information indicating resource retransmission.

With reference to the second aspect, in a possible design, the method further includes: in the time domain, the time interval between the end moment of the third resource and the start moment of the first resource is greater than or equal to the second duration, and/or, The time interval between the end moment of the third resource and the start moment of the second resource is greater than or equal to the second duration.

With reference to the second aspect, in a possible design, it further includes meeting at least one of the following conditions: the priority of the first message associated with the first information is less than or equal to the priority of the second message associated with the second information; The priority of a message is greater than the priority of the second message, and it is determined that the second auxiliary terminal device corresponding to the second terminal device does not send information indicating resource overlap or send information indicating resource retransmission to the second terminal device; second The terminal device does not have a corresponding auxiliary terminal device; the priority of the first message is equal to the priority of the second message, and the third resource is located before the fourth resource, and the fourth resource is used to carry information indicating resource overlap to the second terminal device Or information indicating resource retransmission.

In a possible design, the first duration is equal to the sum of the duration required to process the first information and the second information and the duration required to prepare the third information.

Through this method, it can be ensured that the first auxiliary terminal device can have enough time to analyze the first information and the second information, and can have enough time to prepare to send the third information.

In combination with the first aspect or the second aspect, in a possible design, the second duration is equal to the sum of the duration required to process the third information and the duration required to complete the resource reselection, or the second duration is equal to the processing of the fourth information The sum of the time required and the time required to complete the resource reselection.

With this method, it can be ensured that after the first terminal device receives the pending third information or the fourth information, it can have enough time to parse the third information or the fourth information, and have enough time to reselect resources.

In combination with the first aspect or the second aspect, in a possible design, the second terminal equipment does not have a corresponding second auxiliary terminal equipment, including: the second terminal equipment does not support being assisted by other terminal equipment; or, the second terminal equipment The device supports being assisted by other end devices, but the second end device is not configured with the second auxiliary end device.

In combination with the first aspect or the second aspect, in a possible design, the second terminal device does not support being assisted by other terminal devices, and the second terminal device does not have the ability to check whether resources are preempted; or the second terminal device does not It supports being assisted by other terminal devices, and the resource preemption check is not enabled in the resource pool where the second resource is located.

With reference to the first aspect or the second aspect, in a possible design, the first information is associated with the first message, and the third resource is determined according to the first message; or, the third resource is determined by the first auxiliary terminal device.

If the third resource is determined according to the first message, the implementation complexity of the first auxiliary terminal device can be reduced, and the resource for sending information cannot be acquired in time. If the third resource is determined by the first auxiliary terminal device, the flexibility of sending the third information or the fourth information can be improved.

With reference to the first aspect or the second aspect, in a possible design, the first auxiliary terminal device is the destination terminal device of the first information; or, the first auxiliary terminal device is a terminal device that is associated with the first terminal device .

If the first auxiliary terminal device is the destination terminal device of the first information, since the first auxiliary terminal device originally needs to receive information or messages, the first auxiliary terminal device may determine the first auxiliary terminal device to pre-determine during the process of receiving the information or messages. Whether the reserved resources are occupied, it is more convenient for the first terminal device to determine whether there is a resource conflict. In addition, as a terminal device that needs to receive information or messages, the first auxiliary terminal device itself is more concerned about whether the data receiving resources and channel quality meet the receiving conditions than other terminal devices. Therefore, the terminal device that needs to receive information or messages is selected as the auxiliary terminal. Equipment is more efficient for the entire system.

In a third aspect, the present application provides a method for handling resource overlap. In the method, a first terminal device sends first information, and the first information indicates a first resource reserved by the first terminal device; The third information or fourth information of the first auxiliary terminal device, the third information is used to indicate that the first resource overlaps with other resources, and the fourth information is used to instruct the first terminal device to perform resource reselection; the third information or the fourth information The information is sent when a preset condition is met; the first terminal device performs resource reselection according to the third information or the fourth information.

In a fourth aspect, the present application provides a method for handling resource overlap. In the method, a first terminal device sends first information, and the first information indicates a first resource reserved by the first terminal device; the first terminal device receives information from The third information or fourth information of the first auxiliary terminal device, the third information is used to indicate that the first resource overlaps with other resources, and the fourth information is used to instruct the first terminal device to perform resource reselection; wherein, in the time domain , the start time of the third resource that carries the third information or the fourth information, the end time of the resource that carries the first message associated with the first information, and the end time of the resource that is associated with the second message that carries the second information. The time interval between the two is greater than or equal to the first duration; the first terminal device performs resource reselection according to the third information or the fourth information.

With reference to the third aspect, in a possible design, the preset condition includes at least one of the following: in the time domain, the start time of the third resource bearing the third information or the fourth information is associated with the first information bearing The time interval between the end time of the resource of the first message and the end time of the resource of the second message associated with the second message is greater than or equal to the first duration; the second information comes from the second terminal device; in the time domain , the time interval between the end moment of the third resource and the start moment of the first resource is greater than or equal to the second duration, and/or the time interval between the end moment of the third resource and the start moment of the second resource is greater than or is equal to the second duration; the second resource is reserved by the second terminal device.

With reference to the third aspect, in a possible design, the preset condition includes any of the following conditions: the priority of the first message associated with the first information is less than or equal to the priority of the second message associated with the second information, the second The information comes from the second terminal device; the priority of the first message is greater than the priority of the second message, and it is determined that the second auxiliary terminal device corresponding to the second terminal device does not send information indicating resource overlap to the second terminal device or sends an instruction to proceed Retransmission information of the resource; the second terminal device does not have a corresponding auxiliary terminal device; the priority of the first message is equal to the priority of the second message, and the third resource is located before the fourth resource, and the fourth resource is used to carry the The two terminal equipments indicate the information of resource overlap or the information that indicates to perform resource retransmission.

With reference to the fourth aspect, a possible design further includes: in the time domain, the time interval between the end moment of the third resource and the start moment of the first resource is greater than or equal to the second duration, and/or, The time interval between the end moment of the third resource and the start moment of the second resource is greater than or equal to the second duration.

With reference to the fourth aspect, in a possible design, it further includes meeting at least one of the following conditions: the priority of the first message associated with the first information is less than or equal to the priority of the second message associated with the second information; The priority of a message is greater than the priority of the second message, and it is determined that the second auxiliary terminal device corresponding to the second terminal device does not send information indicating resource overlap or send information indicating resource retransmission to the second terminal device; second The terminal device does not have a corresponding auxiliary terminal device; the priority of the first message is equal to the priority of the second message, and the third resource is located before the fourth resource, and the fourth resource is used to carry information indicating resource overlap to the second terminal device Or information indicating resource retransmission.

In combination with the third aspect or the fourth aspect, in a possible design, the first duration is equal to the sum of the duration required for processing the first information and the second information and the duration required for preparing the third information.

In combination with the third aspect or the fourth aspect, in a possible design, the second duration is equal to the sum of the duration required to process the third information and the duration required to complete the resource reselection, or the second duration is equal to the processing of the third information Or the sum of the time required for the fourth information and the time required to complete the resource reselection.

With reference to the third aspect or the fourth aspect, in a possible design, the second terminal device does not have a corresponding second auxiliary terminal device, including: the second terminal device does not support being assisted by other terminal devices; or, the second terminal device The device supports being assisted by other end devices, but the second end device is not configured to be assisted by other end devices.

In combination with the third aspect or the fourth aspect, in a possible design, the second terminal device does not support being assisted by other terminal devices, and the second terminal device does not have the ability to check whether resources are preempted; or the second terminal device does not It supports being assisted by other terminal devices, and the resource preemption check is not enabled in the resource pool where the second resource is located.

With reference to the third aspect or the fourth aspect, in a possible design, the first information is associated with the first message, and the third resource is determined according to the first message; or, the third resource is determined by the first auxiliary terminal device.

With reference to the third aspect or the fourth aspect, in a possible design, the first auxiliary terminal device is the destination terminal device of the first information; or, the first auxiliary terminal device is a terminal device that is associated with the first terminal device .

With reference to the third aspect or the fourth aspect, in a possible design, the first terminal device updates a candidate resource set of the first terminal device, the candidate resource set includes at least one resource, and the candidate resource set is used by the first terminal device to select from For resources for data transmission, the updated candidate resource set does not include the first resource.

With reference to the third aspect or the fourth aspect, in a possible design, after the first terminal device performs resource reselection according to the third information or the fourth information, the method further includes: the first terminal device sends fifth information, the fifth information Indicates a fifth resource for reselection by the first terminal device.

With reference to the third aspect or the fourth aspect, in a possible design, a candidate resource set is updated according to the third message, where the candidate resource set is a transmission resource candidate set of the first terminal device, and the updated The set of candidate resources does not include the first resource.

In combination with the third aspect or the fourth aspect, in a possible design, the first resource is excluded from the candidate resource set.

The method described in the third aspect or the fourth aspect corresponds to the method described in the first aspect or the second aspect. For the beneficial effects of the relevant technical features in the method described in the third aspect or the fourth aspect, reference may be made to the first aspect or the description of the second aspect, and details are not repeated here.

In a fifth aspect, the present application provides a method, in which the auxiliary terminal device receives the first sideline information from the third terminal device in the first time unit; receives the first sideline information from the fourth terminal device in the first time unit Second sideline information; the destination terminal device of the first sideline information is the fourth terminal device; or, the destination terminal device of the first sideline information is the fourth terminal device, and the destination terminal device of the second sideline information is the third terminal equipment; assisting the terminal equipment to send feedback information to the third terminal equipment, where the feedback information is used to instruct the third terminal equipment to perform resource reselection and send the first side to the fourth terminal equipment on the reselected resources row information; or the feedback information is used to instruct the third terminal device to exclude the resource corresponding to the first time unit in the candidate resource set.

With the above method, when the fourth terminal device is a half-duplex terminal device, it cannot receive the first sideline information while sending the second sideline information. Therefore, the auxiliary terminal device instructs the third terminal device to perform operations such as resource reselection through the feedback information, so that the third terminal device can determine that the first sideline information is not sent successfully, thereby improving the sideline communication efficiency.

In a possible design, the fourth terminal device is a half-duplex terminal device.

In a possible design, the feedback information is used to indicate that the fourth terminal device is a half-duplex terminal device.

In a sixth aspect, the present application provides a method, in which a third terminal device sends first sideline information to a fourth terminal device in a first time unit, and the first time unit is also used for the fourth The terminal device sends the second sideline information; the third terminal device receives feedback information from the fifth terminal device;

The feedback information is used to instruct the third terminal device to perform resource reselection and send the first sideline information to the fourth terminal device on the reselected resources; or the feedback information is used to instruct the third terminal device. The three terminal devices exclude the resource corresponding to the first time unit from the candidate resource set.

In a possible design, the third terminal device receives the second sideline information from the fourth terminal device, and the feedback information is also sent to the fourth terminal device.

In a seventh aspect, an embodiment of the present application provides a communication device, where the communication device may be an auxiliary terminal device, a module capable of implementing functions on the auxiliary terminal device side, or a chip that can be provided inside the auxiliary terminal device. The communication device has the function of implementing the first aspect or the second aspect. For example, the communication device includes a module or unit or means corresponding to performing some or all of the steps involved in the first aspect or the second aspect. , the functions or units or means may be implemented by software, or by hardware, or by executing corresponding software by hardware.

In a possible design, the communication device includes a processing unit and a communication unit, wherein the communication unit can be used to send and receive signals to realize communication between the communication device and other devices, for example, the communication unit is used to receive data from Configuration information of the first terminal device; the processing unit may be used to perform some internal operations of the communication apparatus. The functions performed by the processing unit and the communication unit may correspond to the operations involved in the first aspect or the second aspect.

In a possible design, the communication apparatus includes a processor, and may further include a transceiver, where the transceiver is used for transmitting and receiving signals, and the processor utilizes the transceiver to accomplish the above-mentioned first aspect or the second aspect method in any possible design or implementation. Wherein, the communication device may further include one or more memories, which are used for coupling with the processor, and the memories may store computer programs or instructions for implementing the functions involved in the first aspect or the second aspect. The processor can execute the computer programs or instructions stored in the memory, and when the computer programs or instructions are executed, make the communication apparatus implement any of the possible designs or implementations of the first aspect or the second aspect. method.

In one possible design, the communication device includes a processor, which may be operative to couple with the memory. The memory may store computer programs or instructions that implement the functions involved in the first aspect or the second aspect above. The processor can execute the computer programs or instructions stored in the memory, and when the computer programs or instructions are executed, make the communication apparatus implement any of the possible designs or implementations of the first aspect or the second aspect. method.

In a possible design, the communication device includes a processor and an interface circuit, wherein the processor is configured to communicate with other devices through the interface circuit, and execute any possible design or implementation of the first aspect or the second aspect above method in method.

In an eighth aspect, an embodiment of the present application provides a communication device, where the communication device may be a terminal device, a module capable of implementing functions on the side of the first terminal device, or a chip capable of being provided inside the first terminal device. The communication device has the function of implementing the third aspect or the fourth aspect. For example, the communication device includes a module or unit or means corresponding to performing part or all of the operations involved in the third aspect or the fourth aspect. Either unit or means may be implemented by software, or by hardware, or by executing corresponding software by hardware.

In a possible design, the communication device includes a processing unit and a communication unit, wherein the communication unit can be used to send and receive signals to implement communication between the communication device and other devices, for example, the communication unit is used to receive data from Uplink information of the first auxiliary terminal device; the processing unit may be used to perform some internal operations of the communication apparatus. The functions performed by the processing unit and the communication unit may correspond to the operations involved in the third aspect or the fourth aspect.

In a possible design, the communication apparatus includes a processor, and may further include a transceiver, where the transceiver is used for transmitting and receiving signals, and the processor utilizes the transceiver to accomplish the third aspect or the fourth aspect above method in any possible design or implementation. Wherein, the communication apparatus may further include one or more memories, the memories are used for coupling with the processor, and the memories may store computer programs or instructions for implementing the functions involved in the third aspect or the fourth aspect. The processor can execute the computer programs or instructions stored in the memory, and when the computer programs or instructions are executed, make the communication device implement any of the possible designs or implementations of the third aspect or the fourth aspect. method.

In one possible design, the communication device includes a processor, which may be operative to couple with the memory. The memory may store computer programs or instructions for implementing the functions involved in the third aspect or the fourth aspect above. The processor can execute the computer programs or instructions stored in the memory, and when the computer programs or instructions are executed, make the communication device implement any of the possible designs or implementations of the third aspect or the fourth aspect. method.

In a possible design, the communication device includes a processor and an interface circuit, wherein the processor is configured to communicate with other devices through the interface circuit, and execute any possible design or implementation of the third aspect or the fourth aspect above method in method.

It can be understood that, in the above third aspect or the fourth aspect, the processor may be implemented by hardware or by software. When implemented by hardware, the processor may be a logic circuit, an integrated circuit, etc.; when implemented by software When implemented, the processor may be a general-purpose processor, which is implemented by reading software codes stored in a memory. In addition, the above processors may be one or more, and the memory may be one or more. The memory may be integrated with the processor, or the memory may be provided separately from the processor. In a specific implementation process, the memory and the processor may be integrated on the same chip, or may be separately provided on different chips. The embodiment of the present application does not limit the type of the memory and the manner of setting the memory and the processor.

In a ninth aspect, embodiments of the present application provide a computer program product, which, when a computer reads and executes the computer program product, enables the computer to implement the method in any possible design of the first to sixth aspects.

In a tenth aspect, an embodiment of the present application provides a chip, where the chip includes a processor, and the processor is coupled to a memory and configured to read and execute a software program stored in the memory, so as to implement the above-mentioned first aspect to The method in any possible design of the sixth aspect.

In an eleventh aspect, a communication device is provided, comprising a processor and an interface circuit, the interface circuit is configured to receive signals from other communication devices other than the communication device and transmit to the processor or transfer signals from the processor Sent to other communication devices other than the communication device, the processor is configured to implement any one of the foregoing first to sixth aspects and any possible implementation manner of any one of the above-mentioned aspects through logic circuits or executing computer programs or instructions method in .

In a twelfth aspect, there is provided a communication apparatus, comprising a processor and a memory, the processor is coupled to the memory, the processor is configured to execute a computer program or instructions stored in the memory, so that the communication apparatus A method in any of the aforementioned first to sixth aspects, and any possible implementation of any of the aspects, is implemented.

In a thirteenth aspect, an embodiment of the present application provides a communication system, where the communication system includes the communication device described in the third aspect and the communication device described in the fourth aspect.

In a fourteenth aspect, an embodiment of the present application provides a computer-readable storage medium, where computer-readable instructions are stored in the computer storage medium, and when a computer reads and executes the computer-readable instructions, the computer enables the computer to implement the above-mentioned first The method in any one possible design of the first aspect to the sixth aspect.

Description of drawings

FIG. 1 is a schematic diagram of a communication architecture applicable to an embodiment of the present application;

FIG. 2 is a schematic flowchart of a method for processing resource overlap provided by an embodiment of the present application;

FIG. 3 is a schematic diagram of resource overlap provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of a signal coverage area provided by an embodiment of the present application;

FIG. 5(a) is a schematic diagram of resource overlapping provided by an embodiment of the present application;

FIG. 5(b) is a schematic diagram of a resource overlapping provided by an embodiment of the present application;

FIG. 6 is a schematic diagram of resource overlap provided by an embodiment of the present application;

FIG. 7 is a schematic diagram of resource overlapping provided by an embodiment of the present application;

FIG. 8 is a schematic diagram of resource overlapping provided by an embodiment of the present application;

FIG. 9 is a schematic diagram of resource overlapping provided by an embodiment of the present application;

FIG. 10 is a schematic diagram of resource overlap provided by an embodiment of the present application;

FIG. 11 is a schematic diagram of a resource overlapping provided by an embodiment of the present application;

FIG. 12 is a schematic diagram of resource overlap provided by an embodiment of the present application;

13 is a schematic flowchart of a feedback method provided by an embodiment of the present application;

FIG. 14 is a schematic diagram of resource overlap provided by an embodiment of the present application;

FIG. 15 is a schematic diagram of resource overlap provided by an embodiment of the present application;

FIG. 16 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 17 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Detailed ways

The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: long term evolution (long term evolution, LTE) frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD) system and NR systems, etc., are not limited here.

FIG. 1 is a schematic diagram of a network architecture to which an embodiment of the present application is applied. As shown in FIG. 1 , a network device may preconfigure multiple resources on a sidelink, and a terminal device may sense available resources among the above multiple resources, and select the resources among them for data transmission. In FIG. 1, an uplink and a downlink may be included between the terminal device and the network device; correspondingly, the link between the terminal device and the terminal device may be referred to as a side link.

In the side link, data can be directly transmitted between two terminal devices without first sending the data to the network device, and then the network device forwards it to another terminal device through the core network, which can greatly reduce the data delay.

In the side link, the resource selected by one terminal device may also be selected by other terminal devices at the same time. At this time, the resources selected by the two terminal devices overlap, that is, resource conflict, which will cause the receiver to fail to correctly locate the resource. Receive data. In this embodiment of the present application, resource overlap, resource conflict, and resource collision may represent the same meaning. If two resources overlap, it means that the two resources overlap in the time domain, frequency domain, and code domain. Resource overlap can be partial or complete. In the case of complete overlap, the resources in the time domain, frequency domain and code domain occupied by the two resources are all the same, and partial overlap indicates that some of the two resources are the same.

In the embodiment of the present application, by introducing auxiliary terminal equipment, when the resources selected by the terminal equipment conflict with the resources selected by other terminal equipment, when certain conditions are met, the auxiliary terminal equipment indicates to the auxiliary terminal equipment that the selected resources are the same as the resources selected by other terminal equipment. Other resources overlap or instruct them to perform resource reselection, so as to reduce the occurrence of data transmission failure due to overlapping resources, which can improve communication efficiency and resource utilization. The auxiliary terminal device may be a device with strong capability, or a roadside unit, which is not limited in this application.

In the embodiments of the present application, the terminal device is a device with a wireless transceiver function or a chip that can be provided in the device. The device with wireless transceiver function may also be referred to as user equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, remote station, remote terminal, mobile device, user terminal, user agent or user device. In practical applications, the terminal device in the embodiments of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiver function, and the like. In this application, the aforementioned device with wireless transceiver function and the chip that can be installed in the device are collectively referred to as terminal device.

In this embodiment of the present application, the network device may be a wireless access device in various modes in the wireless network, for example, the network device may be a RAN node that accesses the terminal device to the wireless network, and may also be referred to as a RAN device or a base station. Some examples of network equipment are: generation Node B (gNodeB), transmission reception point (TRP), evolved node B (evolved node B, eNB), radio network controller (radio network controller, RNC), node B (node B, NB), base station controller (BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved Node B, or home Node B, HNB ), base band unit (BBU), or wireless fidelity (wireless fidelity, Wi-Fi) access point (access point, AP), etc. In a network structure, the network device may be a centralized unit (centralized unit, CU) node, a distributed unit (distributed unit, DU) node, or a network device including a CU node and a DU node. As an example, the interface between the CU and the DU may be referred to as the F1 interface. Optionally, the CU node may be a CU-CP (control plane, control plane) node, a CU-UP (user plane, user plane) node, or a node including a CU-CP node and a CU-UP node. The interface between the DU and the CU-CP may be called the F1-C interface, and the interface between the DU and the CU-UP may be called the F1-U interface. In other possible cases, the network device may be other devices that provide wireless communication functions for the terminal device. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device. For convenience of description, in this embodiment of the present application, a device that provides a wireless communication function for a terminal device is referred to as a network device. In the embodiments of the present application, the apparatus for implementing the function of the network device may be a network device; it may be a module or unit that can be applied to the network device; or it may be a device capable of supporting the network device to implement the function, such as a chip system, which The apparatus can be installed in the network equipment or used in conjunction with the network equipment.

Optionally, the foregoing DU, CU, CU-CP and CU-UP may be functional modules, hardware structures, or functional modules+hardware structures, which are not limited.

The network architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. The evolution of the architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

Some scenarios in the embodiments of the present application are described by taking the side link as an example. It should be noted that the solutions in the embodiments of the present application can also be applied to other scenarios, and the corresponding names can also use the names of corresponding functions in other scenarios. to replace.

In the embodiments of the present application, the interaction between the auxiliary terminal device and the terminal device is used as an example for description. The operations performed by the auxiliary terminal device may also be performed by a chip or module inside the auxiliary terminal device, and the operations performed by the terminal device may also be performed by the terminal device. Internal chip or module implementation.

As shown in FIG. 2 , a schematic flowchart of a method for processing resource overlap provided by an embodiment of the present application. In the process of FIG. 2 , the first terminal device and the second terminal device select resources as an example for description. The method provided in this embodiment of the present application can also be applied to a scenario where more than two terminal devices reserve resources. For details, please refer to this document. The description of the application will not be repeated here.

S201: The first terminal device sends first information, where the first information indicates the first resource reserved by the first terminal device.

The first resource may be determined by the first terminal device in the resource pool through resource allocation mode 2 RA mode-2. A resource pool is a time-frequency resource configured by a network device for communication between terminal devices. When the first terminal device uses the resource allocation method 2 to determine the first resource, the physical layer of the first terminal device will receive, decode and receive the control information, and in the resource selection window, exclude the resources that are not available in the resource pool and determine the candidate resources. set, and report the candidate resource set to the upper layer of the terminal device, such as the MAC layer. The upper layer of the terminal determines the first resource in the candidate resource set. The unavailable resources determined by the physical layer include: resources reserved by other terminal equipment, resources whose reference signal received power RSRP is higher than a certain threshold, and resources whose transmission priority is higher than its own transmission priority, the embodiment of this application is not limited.

In this embodiment of the present application, the first information is used to indicate one or more resources, and in addition to indicating the first resource, for example, a sixth resource may also be indicated. Both the first resource and the sixth resource are used for PSSCH transmission on the side link shared channel, and the sixth resource may be located before the first resource. For the convenience of description, the PSSCH transmission performed by the first terminal device in the sixth resource may be: It is called the first PSSCH transmission, the PSSCH transmission performed in the first resource may be called the second PSSCH transmission, and the content transmitted in the sixth resource may be called the first message. The first information includes time domain and frequency domain resource indication information, the indicated resources are located in one cycle, and the first information further includes period information, and the indicated resources are located in multiple cycles. When the indicated resource is located in one resource, the second PSSCH transmission carries the retransmission of the data of the first PSSCH transmission; when the indicated resource is located in a different period, the second PSSCH transmission carries the new data transmission.

Wherein, a resource indicated by the first information may also be a resource used for PSSCH transmission and PSCCH transmission, but the frequency domain resources of PSCCH are determined by base station configuration or pre-configuration, and the first information is only used to determine the time slot position of PSCCH , for the convenience of description, in this embodiment of the present application, only the resource indicated by the first information is referred to as the resource used for PSSCH transmission.

The sixth resource carrying the first message may be located in the same time slot as the resource carrying the first information, and the first resource indicated by the first information may be located in a time slot after the time slot where the first information is located.

In this embodiment of the present application, the transport block transmitted by the first terminal device in the sixth resource is referred to as the first message. Since the resource bearing the first message is indicated by the first information, it can be considered that the first message is scheduled by the first information, or the first information and the first message have an associated relationship.

In addition, the first information may also indicate the priority of the first message, and the priority of the first message may refer to the logical channel priority corresponding to the first message, or may refer to the priority of PSSCH transmission on the sixth resource. For example, the first information includes a priority, and the priority is used to indicate the priority of the first message. In a possible implementation manner, the priority may use a priority value (priority value) to indicate that the larger the priority value is, the smaller the priority of the first message is, for example, the priority value included in the first message and the priority value included in the second message. The included priority values are 2 and 3 respectively, then the priority corresponding to the priority value 2 is greater than the priority corresponding to the priority value 3.

In combination with the foregoing description, when the present application is applied to a side link, as shown in FIG. 3 , the first information may be side link control information (sidelink control information) transmitted through a physical sidelink control channel (physical sidelink control channel, PSCCH). information, SCI), the SCI can be called a first-level SCI (SCI format 1). The first-level SCI carries, but is not limited to, priority indication information, resource indication information, resource reservation period indication information and reserved bits. The priority indication information is used to indicate the priority of PSSCH transmission; the resource indication information includes indication information of time domain and frequency domain resources, indicating that at most 3 resources are reserved in 32 time slots, and the 3 resources are located in the same period The resource reservation period indication information is used to indicate the period of reserved resources; the reserved bit information may contain 1-bit indication information to indicate the terminal's support for the Rel-17 version protocol, or whether it supports being assisted by other terminals , or if other terminal assistance is currently available.

In Fig. 3, the first-level SCI sent by the first terminal device is represented by SCI 1. In addition, the SCI 2 in FIG. 3 is the first-level SCI sent by the second terminal device, that is, an example of the second information, and the following description can be referred to for details. The first information may be used to indicate the sixth resource for transmitting the first message, and to indicate the first resource. Wherein, the first message may include the data to be transmitted and the secondary SCI.

The secondary SCI (SCI format 2) is carried in the physical side row shared channel PSSCH. The secondary SCI includes, but is not limited to, the destination terminal identification (destination ID), the source terminal equipment identification (source ID), the communication range requirement (communication range requirement) and the zone identification (Zone ID). The terminal device can send a message to the target terminal device, and the target terminal device can judge whether the message is sent to itself through the destination ID. One achievable way is that the target terminal device compares the destination ID with the source ID, and if they are the same, it considers that the message is sent to itself. In addition, the terminal device can identify itself to send information through the source ID to ensure the integrity of the communication link. The communication range requirement is used to determine the communication range of the terminal device, which can also be understood as the effective signal coverage. The terminal device can use the zone ID to identify its own position, and receive the zone ID of other terminal devices to calculate the distance with other terminal devices, and further, determine the relative position of itself and other terminal devices, whether it is in the signal share reform area of other terminal devices the edge of.

In the side link, data is generally transmitted through a physical sidelink shared channel (PSSCH), so the sixth resource indicated by the first information may be PSSCH. Specifically, in FIG. 3, the sixth resource corresponds to PSSCH is denoted PSSCH 1-1 and is located in the same time slot as SCI 1.

In this embodiment of the present application, the first resource may be used to repeatedly transmit the first message, and may also be used to transmit other data. The first resource may include PSSCH (represented by PSSCH 1-2 in FIG. 3 ) for transmitting data and PSCCH for transmitting control information.

Optionally, the first terminal device may also indicate at least one of the following through the first information:

The protocol version supported by the first terminal device, for example, the protocol version supported by the first terminal device may include but not limited to the 3rd generation partnership project (the 3rd generation partnership project, 3GPP) version (release, Rel) 16 or Rel 17, etc.;

Whether the first terminal device supports being assisted by other terminal devices;

Whether the first terminal device is configured as an auxiliary terminal device, and the auxiliary terminal device is used to assist the first terminal device.

For example, when the first information is an SCI, the above-mentioned information may be indicated by a reserved bit (reserved bit) in the first-level SCI, or a new field may be introduced to indicate the above-mentioned information, which the embodiment of the present application does not limited. For example, as shown in Tables 1 to 3, whether the first terminal device supports the Rel-17 protocol version (as shown in Table 1) may be indicated by the most significant bit (most significant bit, MSB) in the reserved bits in the SCI. , or indicate whether to support being assisted by other terminal equipment (as shown in Table 2), or indicate whether to configure the first auxiliary terminal equipment (as shown in Table 3).

Table 1

According to Table 1, the value of the MSB in the reserved bits is 0, and the first terminal device is a terminal device that does not support Rel 17; the value of the MSB in the reserved bits is 1, indicating that the first terminal device supports Rel 17. terminal equipment. Vice versa, if the value of the MSB in the reserved bits is 1, the first terminal device is a terminal device that does not support Rel 17; the value of the MSB in the reserved bits is 0, indicating that the first terminal device supports Rel 17. terminal equipment. For the convenience of description, in the embodiment of the present application, the terminal device supporting Rel 16 may be referred to as Rel 16 terminal device for short, and the terminal device supporting Rel 17 may be referred to as Rel 17 terminal device for short.

Table 2

预留比特reserved bits	是否支持被辅助Whether to support being assisted
00	不支持被辅助Assisted not supported
11	支持被辅助Support is assisted

According to Table 2, the value of the MSB in the reserved bits is 0, which means that the first terminal device does not support being assisted by other terminal devices; the value of the MSB in the reserved bits is 1, which means that the first terminal device supports being assisted by other terminals. Equipment assistance. Vice versa, the value of the MSB in the reserved bits is 1, which means that the first terminal device does not support being assisted by other terminal devices; the value of the MSB in the reserved bits is 0, which means that the first terminal device supports being assisted by other terminals. Equipment assistance.

table 3

According to Table 3, the value of the MSB in the reserved bits is 0, indicating that the first terminal device is not configured to assist the terminal device; the MSB value in the reserved bits is 1, indicating that the first terminal device is configured to assist the terminal device. . Vice versa, the value of the MSB in the reserved bits is 1, indicating that the first terminal device is not configured to assist the terminal device; the value of the MSB in the reserved bits is 0, indicating that the first terminal device is configured to assist the terminal device. .

The above is just an example, and other manners may also be used to indicate, which will not be repeated here.

The protocol version supported by the first terminal device, whether it supports being assisted by other terminal devices, and whether it is configured to assist the terminal device, can also be indicated by the secondary SCI in the first message scheduled by the first information, for example, introduced by the secondary SCI. The new indication field indication is not repeated here.

In addition to the content described above, the first information may also indicate other content, which will not be illustrated one by one here.

S202: The second terminal device sends second information, where the second information indicates the second resource reserved by the second terminal device.

S201 and S202 may be executed sequentially or concurrently, and the execution sequence is specifically determined according to the actual situation, which is not limited in this embodiment of the present application.

The second resource may also be selected from a resource pool. The first resource and the second resource may be located in the same resource pool, or may be located in different resource pools, which is not limited in this embodiment of the present application.

In this embodiment of the present application, the second information is used to indicate one or more resources, and in addition to indicating the second resource, for example, the seventh resource may also be indicated. Both the second resource and the seventh resource are used for PSSCH transmission on the side link shared channel, and the seventh resource may be located before the second resource. For the convenience of description, the PSSCH transmission performed by the first terminal device in the seventh resource may be It is called the first PSSCH transmission, the PSSCH transmission performed in the second resource may be called the second PSSCH transmission, and the content transmitted in the seventh resource may be called the second message. The second information includes time domain and frequency domain resource indication information, the indicated resources are located in one cycle, and the first information further includes cycle information, and the indicated resources are located in multiple cycles. When the indicated resource is located in one resource, the second PSSCH transmission carries the retransmission of the data of the first PSSCH transmission; when the indicated resource is located in a different period, the second PSSCH transmission carries the new data transmission.

The seventh resource may be located in the same time slot as the resource of the second information, and the second resource may be located in a time slot after the time slot in which the second information is located.

In this embodiment of the present application, the TB transmitted by the first terminal device in the seventh resource is referred to as the first message. Since the resource bearing the first message is indicated by the first information, it may be considered that the first message is scheduled by the first information, or the first information is associated with the first message.

A resource indicated by the second information may also be a resource used for PSSCH transmission and PSCCH transmission, but the frequency domain resources of PSCCH are determined by base station configuration or pre-configuration, and the second information is only used to determine the time slot position of PSCCH. For convenience of description, in this embodiment of the present application, only the resources indicated by the second information are referred to as resources used for PSSCH transmission.

As shown in FIG. 3 , the second information may be the SCI transmitted through the PSCCH, and the SCI is represented by SCI 2 in FIG. 3 . That is, SCI 2 in Figure 3 represents the first-level SCI of the second terminal device. In FIG. 3, the seventh resource indicated by the second information is located in PSSCH 2-1, and is located in the same time slot as SCI 2. The seventh resource used for transmitting the second message can be used as PSSCH. Specifically, in FIG. 3 , the PSSCH corresponding to the seventh resource is represented as PSSCH 2-1.

The second resource indicated by the second information may be used to repeatedly transmit the second message, and may also be used to transmit other data. The second resource may include PSSCH (represented by PSSCH 2-2 in FIG. 3 ) for transmitting data and PSCCH for transmitting control information.

Similar to the first information, the second information may also indicate the priority of the second message, the second information may also indicate the protocol version supported by the second terminal device, whether the second terminal device supports being assisted by other terminal devices, and the second terminal device. Whether the device is configured with at least one item of the auxiliary terminal device may refer to the foregoing description of the first information for details, and details will not be repeated here.

Optionally, if the first terminal device is configured with the first auxiliary terminal device, the following process may also be included:

S203: The first auxiliary terminal device acquires the first information from the first terminal device, and acquires the second information from the second terminal device.

The first auxiliary device may listen to the wireless channel, for example, the PSCCH, so as to receive information such as the first information and the second information transmitted in the wireless channel.

The first auxiliary terminal device can also obtain information sent by other terminal devices. The embodiments of the present application take the first terminal device and the second terminal device as examples for description. When there are other terminal devices reserved resources, the embodiments of the present application provide The method is also applicable and will not be repeated here.

In the embodiments of the present application, how to determine the corresponding auxiliary terminal device for a terminal device may be implemented in various manners. Implementation mode 1, the first auxiliary terminal device is the destination terminal device of the information or message sent by the first terminal device, that is, if the first terminal device needs to send information or messages to a terminal device, the terminal device can be used as the destination terminal device. The first auxiliary terminal device. Specifically, the first auxiliary terminal device receives the first-level SCI and the second-level SCI, obtains the destination terminal identification of the transmission by decoding the second-level SCI, and compares the destination terminal identification with its own source (source). An identifier (identifier, ID), if the two are the same, the first auxiliary terminal device is the message receiving terminal of the first terminal device, that is, the auxiliary terminal of the first device. Since the first auxiliary terminal device originally needs to receive information or messages, the first auxiliary terminal device can determine whether the resources reserved by the first terminal device are occupied during the process of receiving the information or messages, which is more beneficial to the first terminal device. Determine if there is a resource conflict. In addition, as a terminal device that needs to receive information or messages, the first auxiliary terminal device itself is more concerned about whether the data receiving resources and channel quality meet the receiving conditions than other terminal devices. Therefore, the terminal device that needs to receive information or messages is selected as the auxiliary terminal. Equipment is more efficient for the entire system.

In implementation manner 2, the first auxiliary terminal device is designated by a network device. For example, the network device may determine the terminal device that is closer to the first terminal device as the first auxiliary terminal device. In this way, it can be ensured that the first auxiliary terminal device can obtain the information or message sent by the first terminal device.

In a third implementation, the first auxiliary terminal device is a terminal device that is associated with the first terminal device. For example, a specific first identifier is preliminarily associated with the first terminal device, and the first assisting terminal device only assists the first terminal device with the specific first identifier, for example, the resources reserved by the first terminal device are assisted. conflict determination.

Optionally, a specific second identification can be associated with the first auxiliary device, and the first terminal device only accepts the assistance of the terminal with the specific second identification, for example, according to the terminal device with the specific second identification. resource conflict indication information or resource reselection indication information to perform resource reselection. The specific identification can be carried in the secondary SCI.

In the fourth implementation, the terminal equipment located at the edge of the signal coverage area of the assisted terminal equipment is used as the auxiliary terminal equipment. For example, as shown in FIG. 4 , the positional relationship between multiple terminal devices is illustrated. In FIG. 4 , the terminal device 3 is located at the edge of the signal coverage area of the terminal device 1 . At this time, the terminal device 3 can be used as an auxiliary terminal device of the terminal device 1 . If terminal equipment 2 also exists, as shown in Figure 4, if terminal equipment 2 is located outside the signal coverage area of terminal equipment 1, but terminal equipment 3 is located at the edge of the signal coverage area of terminal equipment 2, since terminal equipment 2 can simultaneously The signals from the terminal device 1 and the terminal device 2 are received to avoid the situation that the terminal device 1 cannot receive the signal of the terminal device 1 and cannot determine whether to select the same resource as the terminal device 2.

The above is just an example, and other cases will not be illustrated one by one.

In this embodiment of the present application, if the first resource and the second resource overlap, optionally, implementation manner 1, S204: the first auxiliary terminal device sends the third information or the fourth information to the first terminal device.

Implementation manner 2: The first auxiliary terminal device sends the sixth information or the seventh information to the second terminal device.

Implementation Mode 3: The first auxiliary terminal device sends the third information or the fourth information to the first terminal device, and sends the sixth information or the seventh information to the second terminal device.

Implementation Mode 4: The first auxiliary terminal device sends the third information or the fourth information to the first terminal device, and the second auxiliary terminal device sends the sixth information or the seventh information to the second terminal device.

The third information is used to indicate that the first resource overlaps with other resources, and the fourth information is used to instruct the first terminal device to perform resource reselection. The sixth information is used to indicate that the second resource overlaps with other resources, and the seventh information is used to instruct the second terminal device to perform resource reselection.

Wherein, the overlap between the first resource and the second resource may mean that the first resource and the second resource overlap partially or completely. The overlapping of the first resource and the second resource indicates that the resources reserved by the two terminal devices conflict, and the receiver cannot correctly receive data in the first resource or the second resource. When the two resources overlap, the two resources have the same part in the time domain and the frequency domain respectively. For example, the first resource occupies time slot 1 in the time domain and resource blocks (RBs) 1 to RB5 in the frequency domain; the second resource occupies time slot 1 in the time domain and RB3 to RB5 in the frequency domain RB8; since the first resource and the second resource are in the same time slot, and the occupied part of the RB is the same, the first resource and the second resource overlap.

The resource through which the first auxiliary terminal device sends the third information or the fourth information may be referred to as a third resource. The resource for the second auxiliary terminal device to send the sixth information or the seventh information may be referred to as the fourth resource. The third resource may be a preconfigured resource. Specifically, in the first implementation manner, the third resource is determined according to the first message scheduled by the first information or the resource carrying the first message. For example, the network device may configure multiple resources semi-statically, and each resource has a corresponding relationship with a resource in the resource pool. When the first terminal device indicates through the first information that a resource in the resource pool is used to transmit the first message , the first auxiliary terminal device may use the resource that has a corresponding relationship with the resource used for transmitting the first message as the third resource. There is a one-to-one correspondence between the resources sent by the sender of the data message and the resources used by the auxiliary terminal device to feedback whether there is a conflict. This correspondence may be pre-configured or pre-defined. When the auxiliary terminal device determines according to the first information After the time-frequency resources used for transmitting the first message, the corresponding resources used for feedback can be determined through the corresponding relationship. In this pre-configured or defined manner, there is no need for the auxiliary terminal device to determine the feedback resource by itself in real time, which helps to reduce the complexity of the auxiliary terminal device.

For example, the network device is configured with 4 resources, and the 4 resources can be shown in Table 4.

Table 4

资源的索引index of resources	时域资源time domain resources	频域资源frequency domain resources	码域资源 Code Domain Resources
11	时隙Oslot O	PRB_XPRB_X	循环移位对_Ycyclic shift pair_Y

22	时隙Oslot O	PRB_X+1PRB_X+1	循环移位对_Ycyclic shift pair_Y
33	时隙Oslot O	PRB_XPRB_X	循环移位对_Y+1Circular shift pair _Y+1
44	时隙Oslot O	PRB_X+1PRB_X+1	循环移位对_Y+1Circular shift pair _Y+1

In Table 4, each resource includes time domain resources, frequency domain resources and code domain resources, and each resource corresponds to an index. The corresponding relationship between the resources in the resource pool and the resources in Table 4 may be: the resources in the resource pool configured as {time slot N, sub-channel M} correspond to the resource with index 1, which is configured as {time slot N+1, sub-channel M} The resource of channel M} corresponds to the resource with index 2, which is configured as {timeslot N, subchannel M+1} corresponds to the resource with index 3, and is configured as {timeslot N+1, subchannel M+1}. The resource corresponds to the resource whose index is 4.

Assuming that the first terminal device transmits the first message through the resource configured as {time slot N+1, subchannel M}, then the first auxiliary terminal device can send the third information or the fourth information through the resource whose index is 2 in Table 4 .

For another example, the first message may also indicate the resource for sending the third information or the fourth information, for example, through the secondary SCI in the first message, and the first auxiliary terminal device may use the resource indicated by the first message. The third message or the fourth message is sent.

In the second implementation manner, the first auxiliary terminal device may autonomously determine the resources for sending the third information or the fourth information, for example, obtain resources from the resource pool through resource selection method 2, or randomly select resources from the resource pool.

In this embodiment of the present application, the first resource and the second resource overlap. In one case, the first auxiliary terminal device may directly send the third information or the fourth information, and/or the second auxiliary terminal device may directly send the third information or the fourth information. Six information or seventh information. In another case, the first auxiliary terminal device and the second auxiliary terminal device can respectively judge whether the preset condition is satisfied, and the first auxiliary terminal device sends the third information or the fourth information when it is determined that the preset condition is satisfied, In the case that the preset condition is not met, the third information or the fourth information is not sent; correspondingly, when the second auxiliary terminal device determines that the preset condition is met, the sixth information or the seventh information is sent, and if the preset condition is not met, the second auxiliary terminal device sends the sixth information or the seventh information. In the case of preset conditions, the sixth information or the seventh information is not sent.

In this embodiment of the present application, for the first auxiliary terminal device, the preset condition may be determined according to at least one of the priority indicated by the first information, the priority indicated by the second information, and the location of the third resource. For the first auxiliary terminal device, the preset condition may be determined according to at least one of the priority indicated by the first information, the priority indicated by the second information, and the location of the fourth resource. For example, taking the first auxiliary terminal device as an example, the preset condition may include at least one of the first condition and the second condition:

The first condition may include condition one or condition one and condition two. Specifically, condition one and condition two may be in the following forms:

Condition 1: In the time domain, the time interval between the start time of the third resource and the end time of the resource carrying the first message and the end time of the resource carrying the second message is greater than or equal to the first duration.

For example, as shown in FIG. 5( a ), it is a schematic diagram of the location relationship of multiple resources provided in this embodiment of the present application. The resource carrying the first message, that is, the sixth resource is located in PSSCH 1-1, the first resource indicated by the first information is located in PSSCH 1-2, and the first information is represented by SCI 1 in FIG. 5(a). The resource carrying the second message, that is, the seventh resource is located in PSSCH 2-1, the second resource indicated by the second information is located in PSSCH 2-2, and SCI 2 is used to represent the second information in FIG. 5(a). The time interval between the start time of the third resource and the end time of PSSCH 1-1 is T1-1; the time interval between the start time of the third resource and the end time of PSSCH 2-1 is T1-3. Both T1-1 and T1-3 need to be greater than or equal to the first duration.

Condition 1 can also be understood as the time interval between the latest time of the end time of the sixth resource and the end time of the seventh resource and the start time of the third resource needs to be greater than the first duration. As shown in Figure 5(a), the end time of the seventh resource is later than the end time of the sixth resource, then the time interval between the end time of the seventh resource and the start time of the third resource is greater than or equal to the first duration .

The specific value of the first duration can be determined according to the actual situation. For example, in implementation manner 1, the first duration is equal to the sum of the duration required to process the first information and/or the second information and the duration required to prepare the third information or the fourth information. In this case, after receiving the SCIs sent by the two sending terminal devices, the auxiliary terminal device can have enough time to process and determine whether the reserved resources indicated in the SCIs will collide. The processing of the first information may include at least one of the following operations: demodulating the first information; decoding the first information; decrypting the first information; filtering the first information, and other operations. Preparing the third information may include, but is not limited to, at least one of the following operations: generating a bit sequence or sequence corresponding to the third information; encoding the above bit sequence or sequence; determining the above bit sequence or resources for sequence mapping; mapping the above bit sequence or sequence, etc. In this implementation manner, when the first auxiliary terminal device determines that the first resource and the second resource overlap according to the first information and the second information, it determines that the third information or the fourth information needs to be sent. Whether the first auxiliary terminal device finally sends the third information or the fourth information, it also needs to determine whether the preset conditions are met, and if the preset conditions are met, the third information or the fourth information is sent.

In implementation manner 2, the first duration is equal to the sum of the duration required for processing the first message and the second message and the duration required for preparing the third information or the fourth information. In the third implementation, the first duration is equal to the sum of the duration required for processing the first information, the first message, the second information and the second message and the duration required for preparing the third information or the fourth information. In the second implementation or the third implementation, the first auxiliary terminal device determines that the first resource and the second resource overlap according to the first information and the second information, and determines that the recipient of the first message and the recipient of the second message are the same When a terminal device is used, it is determined that the third information or the fourth information needs to be sent; if it is determined that the first resource and the second resource overlap, but the receiver of the first message and the receiver of the second message are not the same Under certain conditions, the first auxiliary terminal device may not send the third information or the fourth information. Alternatively, in the second implementation or the third implementation, the first auxiliary terminal device determines that the first resource and the second resource overlap according to the first information and the second information, and determines that the first auxiliary terminal device is the source of the first message or the second message. The receiving terminal device determines to send the third or fourth information.

In implementation manner 4, the first duration is equal to the sum of the duration required for processing the second information and the second message and preparing the third information or the fourth information. In the fourth implementation, the second information is the information with a later start time in the first information and the second information, that is, the information with a later start time in the information in which the reserved resources conflict, and the first terminal device receives the information first. After receiving the first message, determine the resource reserved by the first message, and then receive the second message, determine that the resource reserved by the second message overlaps with the resource reserved by the first message, and determine the receiver of the first message and the second message. When the receiver of the message is the same terminal device, the third information or the fourth information is sent. Alternatively, it is determined that the resources reserved by the second information overlap with the resources reserved by the first information, and it is determined that the first auxiliary terminal device is a terminal device receiving the first message or the second message, and the third information or the fourth information is sent.

The first duration may be expressed in terms of symbols or time slots, or may be expressed in terms of absolute time, milliseconds. The first duration is related to one or more of the following factors: subcarrier spacing SCI and terminal equipment UE capability. The larger the subcarrier spacing, the larger the number of symbols or the number of time slots. The capabilities of the UE can be divided into multiple levels, and each level has a different number of symbols.

In addition, in the time domain, the terminal equipment generally uses time slots as the granularity during transmission, so the start time of the third resource may refer to the start time of the first time slot occupied by the third resource; The end time of , may refer to the end time of the last time slot occupied by the third resource. The same is true for the start time and end time of other resources, which will not be repeated here.

Condition 2: In the time domain, the time interval between the end time of the third resource and the start time of the first resource is greater than or equal to the second duration, and/or the end time of the third resource and the start time of the second resource The time interval between the moments is greater than or equal to the second duration. Wherein, when the second auxiliary terminal device determines whether to send the sixth information or the seventh information according to the preset condition, the third resource in the first condition and the second condition may be replaced with the fourth resource.

For example, with reference to the previous Figure 5(a), the time interval between the end time of the third resource and the start time of PSSCH 1-2 is T1-2, and T1-2 is greater than or equal to the second duration. Further optionally, the time interval between the end moment of the third resource and the start moment of the PSSCH 2-2 is T1-4, and T1-4 may also be greater than or equal to the second duration.

Condition 2 can also be understood as that the time interval between the earliest time of the start time of the first resource and the start time of the second resource and the end time of the third resource needs to be greater than the second duration. As shown in Figure 5(a), the start time of the second resource is earlier than the start time of the first resource, then the time interval between the start time of the second resource and the end time of the third resource is greater than or equal to the first time Two hours.

The specific value of the second duration may be determined according to the actual situation. For example, the second duration is equal to the sum of the duration of processing the third information or the fourth information and the duration required to complete the resource reselection. For another example, the specific value of the second duration may be as shown in Table 5.

table 5

子载波间隔subcarrier spacing	第二时长(单位为时隙)Second duration (unit is time slot)
15kHz15kHz	33
30kHz 30kHz	55
60kHz60kHz	99
120kHz120kHz	1717

In this embodiment of the present application, taking the first auxiliary terminal device as an example, the second condition in the preset conditions may include at least one of the following conditions:

The priority of the first message associated with the first information is less than or equal to the priority of the second message associated with the second information;

The priority of the first message is greater than the priority of the second message, and it is determined that the second auxiliary terminal device corresponding to the second terminal device does not send information indicating resource overlap or send information indicating resource retransmission to the second terminal device;

The second terminal device does not have a corresponding auxiliary terminal device;

The priority of the first message is equal to the priority of the second message, and the third resource is located before the fourth resource;

The fourth resource used by the second auxiliary terminal device to send the sixth information or the seventh information is not within the time range, and the time range is determined by the first duration and the second duration; combining As shown in Fig. 5(a), as shown in Fig. 5(b), the time range is from the end time of the sixth resource and the end time of the seventh resource, which is the latest end time plus the first duration, to the start of the first resource. The latest time of the start time and the start time of the second resource minus the time range of the second duration. The fourth resource is located within the time range, and all symbols including the occupied by the fourth resource are located within the time range.

Wherein, when the second auxiliary terminal device determines whether to send the sixth information or the seventh information according to a preset condition, the second condition may be modified as follows: the priority of the second message associated with the second information is less than or equal to the first information the priority of the associated first message; the priority of the second message is greater than the priority of the first message, and it is determined that the first auxiliary terminal device does not send information indicating resource overlap to the first terminal device or sends a message indicating resource retransmission to the first terminal device information; the first terminal device does not have a corresponding auxiliary terminal device; the priority of the second message is equal to the priority of the first message, and the fourth resource is located before the third resource; the third resource is not within the time range.

Wherein, determining that the second auxiliary terminal device corresponding to the second terminal device does not send information indicating resource overlap or sending information indicating resource retransmission to the second terminal device may mean that the first auxiliary terminal device determines that the second auxiliary terminal device A resource that satisfies the first condition above cannot be found, so that the sixth message or the seventh message cannot be sent. For example, if the sixth information or the seventh information is selected by the second auxiliary terminal device from periodic feedback resources preconfigured by the network device, the first auxiliary terminal device determines that these periodic feedback resources are The resource of the message or the time interval requirement of the resource carrying the second message does not meet the requirement of the first duration, that is, enough time is not reserved for the auxiliary device to detect and determine the resource overlap, or the distance from the reserved first resource or The duration of the second resource is less than the second duration, that is, there is not enough handover resources reserved for the second terminal device or the time required to resolve the conflict. At this time, the first auxiliary terminal device can determine that the second auxiliary terminal device will not send the second terminal to the second terminal. The device sends the sixth message or the seventh message.

The fact that the second terminal device does not have a corresponding second auxiliary terminal device may mean that the second terminal device does not support being assisted by other terminal devices. For example, if the second terminal device is a Rel-16 terminal device, it does not support being assisted by other terminal devices. Auxiliary; the second terminal device does not have a corresponding second auxiliary terminal device, which may also mean that the second terminal device supports being assisted by other terminal devices, but the second terminal device is not configured with a second auxiliary terminal device. In addition, when the second terminal device does not support being assisted by other terminal devices, if the second terminal device has the ability to check whether the resource is preempted, or the resource preemption check is enabled in the resource pool where the second resource (or the second terminal device) is located , then even if it is determined that the first condition is met, the first auxiliary terminal device may not send the third information or the fourth information. That is, if the third resource satisfies the first condition, the first auxiliary terminal device determines that the second terminal device does not have a corresponding second auxiliary terminal device, and the second terminal device does not have the ability to check whether the resource is preempted, or, If the resource preemption check is not enabled in the resource pool where the second resource (or the second terminal device) is located, the first auxiliary terminal device sends the third information or the fourth information; when the second terminal device has the ability to check whether the resource is preempted or, in the case where the resource preemption check is enabled in the resource pool where the second resource (or the second terminal device) is located, the first auxiliary terminal device may not send the third information or the fourth information.

Wherein, that the third resource is located before the fourth resource may mean that the frequency domain resource index of the third resource is smaller than the frequency domain resource index of the fourth resource. For example, if the third resource and the fourth resource are located in the same time slot, then It is considered that the resource with a smaller frequency domain resource index is in the front, and the resource with a larger frequency domain resource index is in the back.

S205: The first terminal device receives the third information or the fourth information from the first auxiliary terminal device.

Further optionally, the first terminal device may perform resource reselection. The first terminal device may also update the candidate resource set of the first terminal device, and the updated candidate resource set does not include the first resource. The candidate resource set includes at least one resource, and the candidate resource set is used by the first terminal device to select a resource for data transmission therefrom.

The physical layer of the first terminal device may update the set of candidate resources, and the physical layer of the first terminal device may report the updated candidate resource set to the media access control (media access control, MAC) layer of the first terminal device . Which resources the first terminal device specifically selects from the candidate resource set is determined by the MAC layer of the first terminal device.

After the first terminal device receives the third information or the fourth information, it may no longer send data through the first resource, and may also perform resource reselection. For example, the first terminal device sends fifth information, the fifth information indicates the fifth resource reserved by the first terminal device, and at this time, the first terminal device no longer transmits data through the first resource.

Optionally, if the second auxiliary terminal device is configured with the second auxiliary terminal device, the second auxiliary terminal device can also acquire the first information and the second information. When the first resource and the second resource overlap, the second auxiliary terminal device may determine whether to send the first resource to the second terminal device according to the priority indicated by the first information, the priority indicated by the second information, and the location of the fourth resource. For the sixth information or the seventh information, reference may be made to the foregoing description, and details are not repeated here.

The process of acquiring the first information and the second information is not limited. For example, the second auxiliary terminal device may perform detection in the resources in the resource pool configured by the network device, and if a signal is detected in any resource, it will receive the resource. in the signal.

As mentioned above, when the first resource and the second resource overlap, the first auxiliary terminal device may determine whether to send the third information or the fourth information according to the actual situation. In order to clearly describe the embodiments of the present application, different examples are used below to describe the situations in which the auxiliary terminal device needs to indicate resource overlap or resource reselection.

scene one:

As shown in FIG. 6 , it is a schematic diagram of a positional relationship of multiple resources provided in this embodiment of the present application. In FIG. 6, UE-B1 is the first terminal device, UE-B2 is the second terminal device, and their auxiliary terminal devices are UE-A1 and UE-A2 respectively, that is, the first auxiliary terminal device is UE-A1, and the second auxiliary terminal device is UE-A1. The auxiliary terminal equipment is UE-A2.

Optionally, UE-A1 may be the receiving UE of UE-B1, that is to say, the receiver of the first information sent by UE-B1 is UE-A1. Optionally, UE-A2 is the receiving UE of UE-B2. Both the first information and the second information are SCI. For the convenience of description, in scenario 1, the first information is represented by SCI 1, and the second information is represented by SCI 2.

Assuming that the priority value included in SCI 1 sent by UE-B1 is P1, and the priority value included in SCI 1 sent by UE-B2 is P2, the larger the priority value, the smaller the priority, such as the one included in SCI 1 The priority value and the priority value included in SCI 2 are 2 and 3 respectively, then the priority value corresponding to the priority value 2 is greater than the priority value corresponding to the priority value 3. This is just an example, and the higher the priority value, the higher the priority.

UE-B1 sends PSCCH 1-1 and PSSCH 1-1 in time slot P, wherein PSCCH 1-1 includes SCI 1, and SCI 1 indicates the sixth resource and the first resource. The sixth resource includes PSSCH 1-1, which is used to carry the first message; the first resource indicated by the first information is located in time slot m, and the first resource includes PSCCH 1-2 and PSSCH 1-2.

UE-B2 sends PSCCH 2-1 and PSSCH 2-1 in time slot Q, wherein PSCCH 2-1 includes SCI 2, and SCI 2 indicates the seventh resource and the second resource. The seventh resource includes PSSCH 2-1, which is used to carry the second message; the second resource indicated by the second information is located in time slot m, including PSCCH 2-2 and PSSCH 2-2. The time slot P and the time slot Q may be the same time slot. In FIG. 6 , the time slot P is located before the time slot Q as an example for description, and other situations will not be repeated.

By decoding SCI 1 in PSCCH 1-1 and SCI 2 in PSCCH 2-1, UE-A1 determines that the first resource reserved by UE-B1 and the second resource reserved by UE-B2 overlap in time slot m. Similarly, UE-A2 can determine the first resource reserved by UE-B1 and the second resource reserved by UE-B2.

It is assumed that the third resource used to carry the third information or the fourth information is located in the time slot P+L, and the fourth resource used to carry the sixth information or the seventh information is located in the time slot Q+L', and L' is greater than or equal to L , L' and L are both integers greater than 0. The following discusses the situations under which the first auxiliary terminal device or the second auxiliary terminal device needs to indicate resource overlap or resource reselection, respectively.

Example 1, P1≥P2 and Q<P+L.

In Example 1, P1≥P2 indicates that the priority indicated by the first information is less than or equal to the priority indicated by the second information, and at the same time, Q<P+L indicates that in the time domain, the third resource bit and the fourth resource are in the first information and after the second information. At this time, UE-A1 may determine that the second condition is satisfied, that is, the priority of the first message scheduled by the first information is less than or equal to the priority of the second message scheduled by the second information. Accordingly, UE-A2 may determine that the second condition is not satisfied.

Further, if the time intervals T1-1 and T1-3 are both greater than the first duration, and both T1-2 and T1-4 are greater than the second duration, then the third resource can be determined, that is, used to send the third information or the fourth information. resources, meet the first condition, then UE-A1 can determine that the preset condition is met, in this case, UE-A1 sends the third information or fourth information to UE-B1, UE-A2 does not need to send UE-B2 The sixth information or the seventh information; if the third resource does not meet the first condition, the UE-A1 does not send the third information or the fourth information.

Among them, T1-1 is the time interval between the start time of the third resource and the end time of PSSCH 1-1, and T1-3 is the time between the start time of the third resource and the end time of PSSCH 2-1 interval; T1-2 is the time interval between the end moment of the third resource and the start moment of PSSCH 1-2, and T1-4 is the time interval between the end moment of the third resource and the start moment of PSSCH 2-2.

Further, if the third resource does not meet the first condition, the UE-A2 sends the sixth information or the seventh information to the UE-B2 when the fourth resource meets the first condition. If the fourth resource does not satisfy the first condition, UE-A2 also does not need to send the sixth information or the seventh information to UE-B2.

If neither the third resource nor the fourth resource meets the first condition, UE-A1 and UE-A2 may not indicate resource overlap or perform resource reselection.

Example 2, P1<P2 and Q<P+L.

In example 2, P1<P2 indicates that the priority indicated by the first information is greater than the priority indicated by the second information, and Q<P+L indicates that in the time domain, the third resource and the fourth resource are located in the first information and the second information. after. At this time, UE-A2 may determine that the second condition is satisfied, that is, the priority of the second message scheduled by the second information is less than or equal to the priority of the first message scheduled by the first information. Correspondingly, UE-A1 may determine that the second condition is not satisfied.

If the fourth resource satisfies the first condition, the UE-A2 may determine that the preset condition is met, in which case the UE-A2 sends the sixth information or the seventh information to the UE-B2; if the fourth resource does not satisfy the first condition condition, UE-A2 does not send the sixth information or the seventh information.

Further, if the fourth resource does not meet the first condition, the UE-A1 sends the third information or the fourth information to the UE-B1 when the third resource meets the first condition. If the third resource does not satisfy the first condition, UE-A1 also does not need to send the third information or the fourth information to UE-B1.

In Example 3, it is assumed that UE-A1 and UE-A2 in Example 1 and Example 2 are the same UE, which is assumed to be referred to as UE-A. Then, the above processes are all completed by UE-A.

Specifically, when P1≥P2, if the third resource in the time slot P+L satisfies the first condition, UE-A sends the third information or the fourth information to UE-B1, otherwise, sends the sixth information to UE-B2 information or seventh information.

When P1<P2, if the fourth resource in the time slot Q+L' satisfies the first condition, UE-A sends the third information or the fourth information to UE-B2, otherwise it sends the sixth information or the fourth information to UE-B1 Seventh Information.

Scenario two:

As shown in FIG. 7 , UE-B1 is the first terminal device, UE-B2 is the second terminal device, and their auxiliary terminal devices are UE-A1 and UE-A2 respectively, that is, the first auxiliary terminal device is UE-A1, The second auxiliary terminal device is UE-A2.

Similar to Figure 6 in Scenario 1, the difference is that Q≥P+L, and other conditions are the same as Figure 6.

In this scenario, when the first resource and the second resource overlap, UE-A1 may determine that the preset condition is not met, so the third information or the fourth information is not sent. Specifically, since the third resource precedes the second information, UE-A1 cannot obtain resources that satisfy the first condition to send the third information or fourth information. Therefore, regardless of whether P1 is greater than P2, UE-A1 does not send the third information or fourth message.

In this scenario, the UE-A2 sends the sixth information or the seventh information when it is determined that the preset condition is met. Specifically, if the time interval between the start time of the time slot Q+L' where the fourth resource is located and the end time of the time slot Q where the second message is located is greater than the first duration, the time slot Q+L' The time interval between the start time and the end time of the time slot P where the first message is located is greater than the first duration, and the end time of the time slot Q+L' is different from the time slot m where the first resource and the second resource are located. If the time interval between the starting moments is greater than the second duration, then it can be determined that the fourth resource, that is, the resource used for sending the sixth information or the seventh information, satisfies the first condition, then UE-A1 can determine that the preset condition is met, The UE-A2 sends the sixth information or the seventh information to the UE-B2; if the fourth resource does not satisfy the first condition, the UE-A2 does not send the sixth information or the seventh information.

Scenario three:

As shown in FIG. 8 , UE-B1 is the first terminal device, UE-B2 is the second terminal device, and the auxiliary terminal device of UE-B2 is UE-A2, that is, the second auxiliary terminal device is UE-A2. It is assumed that the first terminal device does not have a corresponding first auxiliary terminal device, for example, the first terminal device is a Rel-16 terminal device. Other parameters in FIG. 8 may be similar to those in FIG. 7 , and details are not described herein again.

In this scenario, since UE-B1 does not have auxiliary terminal equipment, the auxiliary terminal equipment of UE-B2 is required, that is, UE-A2 determines to send the sixth information or the seventh information when the preset conditions are met.

Example 1, P1<P2.

In Example 1, P1<P2 indicates that the priority indicated by the first information is greater than the priority indicated by the second information. At this time, UE-A2 may determine that the second condition is satisfied, that is, the priority of the second message scheduled by the second information is less than or equal to the priority of the first message scheduled by the first information. Correspondingly, UE-A1 may determine that the second condition is not satisfied.

At this time, if the fourth resource satisfies the first condition, the UE-A2 determines that the preset condition is met, then when the first resource and the second resource overlap, the UE-A2 sends the sixth information or the seventh information to the UE-B2; if If the fourth resource does not meet the first condition, UE-A2 determines that the preset condition is not met, and UE-A2 does not send the sixth information or the seventh information.

Example 2, P1≥P2.

P1≥P2 indicates that the priority indicated by the first information is less than or equal to the priority indicated by the second information.

method one:

Since UE-B1 does not have auxiliary terminal equipment, UE-A2 can also determine whether to send the sixth information or seventh information.

If UE-A1 does not have the ability to check whether the resource is preempted, or the resource preemption check is not enabled in the resource pool where UE-A1 is located, at this time, UE-A2 can determine that the second condition is satisfied, and the fourth resource satisfies the first condition , UE-A2 sends sixth information or seventh information to UE-B2, otherwise UE-A2 does not send sixth information or seventh information.

Among them, the function of resource preemption check can be pre-configured on the resource pool by the base station configuration or the protocol, and the terminal equipment sending or receiving on the resource pool needs to enable and disable the function of resource preemption check according to the configuration of this function, and the auxiliary terminal device can read The configuration information of the resource pool where the first terminal device is located determines whether the resource preemption function is enabled and whether the first terminal device can perform resource preemption check.

If the auxiliary terminal equipment is the receiving terminal equipment of the first terminal equipment, then a unicast link can be established between them, and the terminal UE capabilities can be exchanged with each other, for example, through the side link PC5-radio resource control (radio resource control, RRC) signaling In this way, the auxiliary terminal device can know whether the first terminal device can support being assisted, or whether it can perform resource preemption detection.

If the first terminal device has the ability to check whether the resource is preempted, or the resource preemption check is enabled in the resource pool where the first terminal device is located, at this time, UE-A2 may not determine that the second condition is satisfied, then UE-A2 may not Send a sixth message or a seventh message.

Method Two:

Regardless of whether UE-A1 has the ability to check whether resources are preempted, or whether resource preemption is enabled in the resource pool where UE-A1 is located, when the fourth resource satisfies the first condition, UE-A2 sends UE-B2 the first Sixth information or seventh information, otherwise UE-A2 does not send the sixth or seventh information.

Scenario four:

Scenario 4 is similar to scenario 3, except that in scenario 3, UE-B1 does not have a corresponding auxiliary terminal device, while in scenario 4, UE-B2 does not have a corresponding auxiliary terminal device. As shown in FIG. 9 , UE-B1 is the first terminal device, UE-B2 is the second terminal device, and the auxiliary terminal device of UE-B1 is UE-A1, that is, the first auxiliary terminal device is UE-A1. It is assumed that the second terminal device does not have a corresponding second auxiliary terminal device, for example, the second terminal device is a Rel-16 terminal device. Other parameters of Q<P+L, in FIG. 9 may be similar to those in FIG. 6 , which will not be repeated here.

In this scenario, since UE-B2 does not have auxiliary terminal equipment, the auxiliary terminal equipment of UE-B1 is required, that is, UE-A1 determines to send the third information or the fourth information when the preset conditions are met.

Example 1, P1<P2.

In Example 1, the priority indicated by the first information is greater than the priority indicated by the second information.

At this time, if the fourth resource satisfies the first condition, the UE-A2 sends the third information or the fourth information to the UE-B2, otherwise the UE-A2 does not send the third information or the fourth information.

Example 2, P1≥P2.

method one:

If the second terminal device does not have the ability to check whether the resource is preempted, or the resource preemption check is not enabled in the resource pool where the second terminal device is located, then when the third resource satisfies the first condition, UE-A1 sends to UE-B1 The third information or the fourth information, otherwise the UE-A1 does not send the third information or the fourth information.

If the second terminal device has the ability to check whether the resource is preempted, or the resource preemption check is enabled in the resource pool where the second terminal device is located, UE-A1 may not send the third information or the fourth information.

Method Two:

Regardless of whether the second terminal device has the ability to check whether the resource is preempted, or whether the resource preemption check is enabled in the resource pool where the second terminal device is located, when the third resource satisfies the first condition, UE-A1 sends the first request to UE-B1. The third information or the fourth information, otherwise the UE-A1 does not send the third information or the fourth information.

Scenario five:

As shown in FIG. 10 , UE-B1 is the first terminal device, UE-B2 is the second terminal device, and the auxiliary terminal device of UE-B1 is UE-A1, that is, the first auxiliary terminal device is UE-A1. It is assumed that the second terminal device does not have a corresponding second auxiliary terminal device, for example, the second terminal device is a Rel-16 terminal device. In Figure 10, Q≥P+L, the third resource is determined according to the first message, that is, the third resource is the resource indicated by the first message, or the resource corresponding to the resource carrying the first message, and other parameters can be the same as those shown in Fig. 10. 6 is similar and will not be repeated here.

In scenario 5, since UE-B2 does not have auxiliary terminal equipment, the auxiliary terminal equipment of UE-B1 is required, that is, UE-A1 determines to send the third information or the fourth information when the preset condition is met.

Since Q≥P+L, that is, the realization P+L where the third resource is located is located before the realization Q where the second information (ie SCI 2) is located, when UE-A1 receives SCI 2, the third resource has missed the , the third information or the fourth information can no longer be sent through the third resource. At this time, UE-A1 needs to independently select a resource that meets the first condition. In Figure 10, it is assumed that UE-A1 autonomously selects a resource that meets the first condition. Between the time slot Q and the time slot m, the UE-A1 can send the third information or the fourth information to the UE-B1 through the resource.

If the UE-A1 cannot obtain the resource satisfying the first condition, the UE-A1 does not send the third information or the fourth information.

In another implementation manner, if the second terminal device has the ability to check whether the resource is preempted, or the resource preemption check is enabled in the resource pool where the second terminal device is located, UE-A1 may not send the third information or the first Four information.

As shown in FIG. 11 , when the receiver of the first terminal device (UE-B1) message and the receiver of the second terminal device (UE-B2) are the same terminal device, that is, the first message and the first message associated with the first information The destination terminal of the second message associated with the two information is the same terminal device. For example, when the third terminal device is used, the third terminal device can be used as the auxiliary terminal device (UE-A) of the first terminal device and the second terminal device. In this case, the third terminal device as the recipient assists both terminal devices at the same time. As the receiver of the message, UE-A is more concerned about whether the messages from UE-B1 and UE-B2 can be successfully received, and whether the resources of the corresponding sideline information will conflict, compared with other terminal devices. Therefore, considering the overall efficiency , it is more reasonable and efficient for the third terminal device to assume the role of the auxiliary terminal device.

The first information sent by UE-B1 is SCI, the first information is carried in PSCCH, the first information is associated with the first message, the first message carries sideline data to be transmitted, the first message is carried in PSSCH, and the first information The association with the first message can be understood as the first information indicating the transmission resources of the first message. For example, the first information indicates the initial transmission resources and retransmission resources of the first message. When there is a second retransmission, the The first piece of information, ie, the SCI, may also indicate the resources for secondary retransmission. In addition, the first information may also indicate the priority of the first message. The first information may carry a priority value (Priority Value). The higher the priority value, the lower the priority, or the higher the priority value, the higher the priority. For example, the first information carries several bits used to indicate the priority value, such as 3 bits, 010 represents the priority value 2, 110 represents the priority value 6, when the priority value and the priority are positively correlated, 010 corresponds to The priority of the data is higher than the corresponding data priority of 110.

Similarly, the second information sent by UE-B2 indicates the transmission resource and data priority of the second message carrying sideline data.

As the receiver of UE-B1 and UE-B2, UE-A represents the destination terminal identity carried in the SCI sent by UE-B1 and UE-B2, that is, the destination ID is the identity of UE-A. UE-A passes the destination terminal in the SCI. The ID determines whether the SACI-related data is sent to itself.

UE-A monitors the SCI on the sideline data control channel, first detects the SCI of UE-B1, for example, monitors the SCI of UE-B1 in time slot P, and judges the UE-B1 according to the destination terminal identifier carried in the SCI of UE-B1. B1 is the data sender and itself is the data receiver, and judges the time-frequency domain resource where the data sent by UE-B1 is located according to the information carried in the SCI.

UE-A continues to monitor the SCI on the sideline data control channel, and monitors the SCI of UE-B2 at a certain time. For example, it monitors the SCI of UE-B2 in time slot Q. As shown in Figure 11, time slot Q is in time slot Q. is located after time slot P. UE-A judges the time domain resource where the data sent by UE-B2 is located according to the information carried in the SCI of UE-B2, and judges the time-frequency domain resources where UE-B1 wants to send the first message and the time-frequency domain resource where UE-B2 wants to send the second message. Time-frequency domain resources overlap. The way of overlapping can be partial overlap or complete overlap, whichever overlap has a greater impact on the transmission of information. During the information transmission process, UE-A, as the data receiver, receives information from two different UEs on the same block of time-frequency resources. The first message of B1 cannot successfully receive the second message from UE-B2. Therefore, UE-A needs to feed back the information of resource conflict and avoid the result of resource conflict.

UE-A detects the SCI of UE-B1 in time slot P, detects the SCI of UE-B2 in the subsequent time slot Q, and makes a judgment of resource conflict after time slot Q, and considers that UE-A processes the monitored data. The time required for the SCI and the information to be fed back is the first duration, and the UE-A can send the resource conflict indication to the sender at the earliest after the first duration T_CI of the time slot Q.

There are two ways to feedback resource conflicts:

A: Send third information to the sender, where the third information is used to indicate that the sender's reserved resources conflict with the reserved resources of other senders;

B: Send fourth information to the sender, where the fourth information is used to instruct the sender to perform resource reselection, so as to avoid an upcoming resource conflict.

UE-A determines to which UE-B the resource conflict information is fed back based on the priorities of the two sending information to be sent by the UE.

UE-A sends a resource indication to one of UE-B1 and UE-B2, which can avoid resource conflict, save unnecessary signaling overhead, and avoid two UEs reselection at the same time. of resources.

When the priority of the first message sent by UE-B1 is higher than the priority of the second message sent by UE-B2, the priority is to ensure the successful sending of the first message, and UE-A sends the third message or the fourth message to UE-B2. Information indicating resource conflicts.

When the priority of the first message sent by UE-B1 is low, UE-A sends a resource conflict indication to UE-B1.

When the data priorities indicated by the respective SCIs of UE-B1 and UE-B2 are the same, UE-A1 indicates any UE-B resource conflict, that is, sends a resource conflict indication to UE-B1 or UE-B2, and sends the resource conflict indication to UE-B1 or UE-B2. The manner includes sending the third information or the fourth information.

For example, when the priority of the information sent by UE-B1 is low, UE-B1 receives the third information from UE-A, and UE-B1 can choose to perform resource reselection, that is, select other resources to send sideline information , for example, select other resources in the resource pool, or UE-B1 can abandon this data transmission in the current cycle, and re-select resources in the next cycle.

As mentioned above, UE-A can send a resource conflict indication to the sender at the earliest after the first duration T_CI of time slot Q. When UE-A determines the feedback resource for feeding back the third information or the fourth information, it also needs to take into account the transmission The resource switching time of the sender, that is, a certain period of time needs to be reserved for the sender, for example, the second duration T_3, so that the sender can re-select non-conflicting sending resources.

The resource for feeding back the third information or the fourth information may be configured in a semi-static manner, for example, it may be configured by a network device, and a resource for sending a conflict indication is periodically configured in the resource pool. Or the time-frequency resources used for feedback have a corresponding relationship with the time-frequency resources used by the sender to send the SCI, and the corresponding relationship may be predetermined or pre-configured. For example, in the time domain, the resources used for feedback conflict indication and the resources for sending SCI may differ by a fixed time length, such as L time slots, that is, as shown in FIG. 11 , the feedback resources of UE-B1 are located in P+L time slots, The feedback resource of UE-B2 is located in the Q+L time slot, and UE-A needs to reserve a second duration of resource switching time for the sending UE when feeding back.

Therefore, UE-A can send the resource conflict indication to the sender at the earliest after the first time duration T_CI of time slot Q, and UE-A needs to send the resource conflict indication to the sender at the latest before the second time duration T_3 before time slot m. Therefore, when the feedback resources of UE-B1 and UE-B2 both meet the above time requirements, UE-A can select the earlier time-frequency resource for feedback, which is beneficial to the sender for subsequent resource switching. Otherwise, when one of the feedback resources of UE-B1 and UE-B2 satisfies the above-mentioned time requirement, UE-A selects the time-frequency resource that meets the condition for feedback.

UE-B1 and UE-B2 may be terminal devices having the same function, for example, both terminal devices of the Rel-17 protocol version. The distinction between Rel-16 UE and Rel-17 UE can be judged by using the 1-bit identifier carried in the reserved bit in the SCI.

In the previous example, it is described that the first information indicates two resources: the sixth resource and the first resource, the sixth resource is used for the first transmission, and the first resource is used for the second transmission. The first message of the second transmission is sent at the same time. Between two transmissions, according to the analysis of the first information in the first transmission, it can be known whether the first resource used in the second transmission overlaps with other resources.

On the other hand, the first information may indicate resources for multiple transmissions. When the maximum number of reserved resources indicated by the configured first information is 2, the first information reserves the resources currently transmitted (for example, the sixth resource) and can reserve the resources for the next transmission (for example, the first resource); when it is 3, the first information reserves the resources for the current transmission (for example, the sixth resource) and can reserve the resources for the next two transmissions ( such as the first resource and the eighth resource). Then, when performing the resource overlap indication, the auxiliary terminal device only performs the indication when the resources of the next PSCCH/PSSCH transmission conflict.

For example, UE-B1 is the first terminal device, UE-B2 is the second terminal device, and their auxiliary terminal devices are UE-A1 and UE-A2 respectively, that is, the first auxiliary terminal device is UE-A1, and the second auxiliary terminal device is UE-A1. The device is UE-A2. The first information sent by UE-B 1 and the second information sent by UE-B 2 are both SCI. For the convenience of description, the first information is represented by SCI 1, and the second information is represented by SCI 2. The priority value included in the SCI 1 sent by UE-B1 is P1, and the priority value included in the SCI 1 sent by UE-B2 is P2.

The SCI 1 sent by UE-B1 indicates 3 resources, namely resource 1 to resource 3, where resource 1 is used for the initial transmission (ie, the first transmission), and resource 2 and resource 3 are reserved for the subsequent two transmissions. resources, namely the first retransmission (ie the second transmission) and the second retransmission (ie the third transmission).

The SCI 2 sent by UE-B2 indicates 3 resources, namely resource 4 to resource 6, where resource 4 is used for the initial transmission (ie, the first transmission), and resource 5 and resource 6 are reserved for the subsequent two transmissions. resources, namely the first retransmission (ie the second transmission) and the second retransmission (ie the third transmission). It is assumed that resources 1 to 6 are respectively configured with corresponding indication resources, which are indication resource 1 to indication resource 6, respectively.

UE-A1 receives SCI 1 sent by UE-B1 and SCI 2 sent by UE-B2, and determines according to SCI 1 and SCI 2 that resource 2 reserved by UE-B1 and resource 5 reserved by UE-B2 overlap, then UE-A1 sends overlap indication information on indicated resource 1 corresponding to the first transmission resource, and the overlap indication information indicates the resource of the second transmission, that is, resource 2 overlaps with other resources;

If resource 3 and resource 6 overlap, that is, the resources of the third transmission overlap, UE-A1 may send the overlap indication information on the indicated resource corresponding to the resource of the second transmission (that is, indication resource 2), the overlap indication information indicates The resources transmitted for the third time overlap with other resources, that is, resource 3 overlaps with other resources.

When the second transmission resources (resource 2 and resource 5) do not overlap, and the third transmission resources (resource 3 and resource 6) overlap, UE-A1 can indicate the resource corresponding to the second transmission resource (ie, indicate the Overlap indication information is sent on resource 2), and no overlap indication information is sent on the indication resource corresponding to the first transmission resource (ie, indication resource 1). For example, as shown in FIG. 12 , it is a schematic diagram of the location relationship of multiple resources provided in this embodiment of the present application. In FIG. 12, resource 2 and resource 5 do not overlap, and resource 3 and resource 6 overlap. UE-A1 may only send a conflict indication on indicated resource 2 and not on indicated resource 1.

The advantage and purpose of this is that it can decide whether to send the conflict indication information according to the feedback of the previous transmission of the hybrid automatic repeat request (HARQ).

When the auxiliary terminal equipment UE-A1 is the receiving UE, if UE-A1 has successfully received and decoded the PSCCH and PSSCH sent by UE-B1 when it receives the second transmission, that is, UE-A1 decodes SCI 1 and resource 2. TB, UE-A1 can feed back an acknowledgement (ACK) to UE-B1 to confirm correct reception, but does not send overlap indication information to save signaling overhead. When UE-A1 fails to receive and decode the PSSCH sent by UE-B1, and neither successfully decodes the TB in resource 2, UE-A1 can feed back a negative acknowledgement (NACK) to UE-B1 to indicate a reception error, The overlap indication information is sent at the same time, or only the overlap indication information is sent.

In this embodiment of the present application, a method is also provided, which can be used for half-duplex indication. Due to the limitation of the capabilities of the terminal equipment, it cannot send and receive at the same time, that is to say, the terminal equipment cannot receive when sending, and vice versa. Therefore, terminal equipment that cannot support simultaneous transmission and reception is called half-duplex terminal equipment. When a half-duplex terminal equipment sends information, other terminal equipment also sends information to it, which is called a half-duplex terminal equipment. labor problem.

As shown in FIG. 13 , a schematic flowchart of a method provided in an embodiment of the present application includes:

S1301: The third terminal device sends the first sideline information to the fourth terminal device in the first time unit.

The destination terminal device of the first sideline information is the fourth terminal device. The specific content of the first sideline information is not limited in this application. The first time unit may be a time slot or a symbol, which is not limited in this application.

S1302: The fourth terminal device sends the second sideline information in the first time unit.

The specific content of the second sideline information is not limited in this application. The fourth terminal device may be a half-duplex terminal device.

S1303: The auxiliary terminal device sends feedback information to the third terminal device.

In an implementation manner, the auxiliary terminal device may receive the first sideline information from the third terminal device in the first time unit, and receive the second sideline information from the fourth terminal device in the first time unit.

In an implementation manner, the time interval between the start time of the feedback information and the end time of the first sideline information is greater than or equal to the third duration. The third duration is the sum of the duration of the auxiliary terminal device processing the first sideline information and the duration of preparing the feedback information.

In this embodiment of the present application, the destination terminal device of the second sideline information may be a third terminal device, or may be another terminal device. When the destination terminal device of the second sideline information is the third terminal device, the auxiliary terminal device may also send feedback information to the fourth terminal device. Wherein, the time interval between the start time of the feedback information and the end time of the second sideline information is greater than or equal to the third duration.

Optionally, S1304: The third terminal device performs resource reselection or excludes the resource corresponding to the first time unit from the candidate resource set.

For example, in combination with the foregoing description, as shown in FIG. 14 , it is assumed that UE-B1 corresponds to the fourth terminal device in FIG. 13 , UE-B2 corresponds to the third terminal device in FIG. 13 , and UE-A corresponds to FIG. In the auxiliary terminal device in 13, UE-B1 is a half-duplex terminal device, that is, UE-B1 cannot receive information when sending information, and cannot send information when receiving information. If UE-B2 sends the first sideline information to UE-B1, for example, the first sideline information is sent in PSCCH or PSSCH or a physical sidelink feedback channel (physical sidelink feedback channel, PSFCH). At the same time, at the same time (time period or time unit), in time slot N, UE-B1 is sending second sideline information to terminal equipment other than UE-B2, such as PSCCH or PSSCH or PSFCH. The second sideline information, that is to say, the information sent by the two UEs overlaps in the time domain, so UE-B1 cannot receive and send information at the same time due to the limitation of half-duplex. Therefore, UE-B1 cannot receive the first sideline information sent by UE-B2 to UE-B1.

In order to ensure the reliability of transmission, the auxiliary terminal equipment, such as UE-A, can send feedback information to the sending UE among the two terminal equipments, that is, send a half-duplex indication or a resource reselection indication, wherein the half-duplex indication is used for In order to instruct the terminal device to have a half-duplex problem, the resource reselection instruction is used to instruct the terminal device that sends the information to select resources and resend the information. Among the two terminal devices UE, UE-B2 sends information to UE-B1, but UE-B1 does not send information to UE-B2, so the sending UE is UE-B2, and the receiving UE is UE-B1. Note that the transmission type used by UE-B1 and UE-B2 is not limited here. It can be unicast, multicast and broadcast. When UE-B2 uses unicast, the receiving UE is UE-B1; multicast or broadcast is used. , UE-B1 is one of the receiving UEs.

After UE-B2 receives the half-duplex indication or the resource reselection indication, it will choose to retransmit the information, and delete the resource from the candidate resource set.

The resource bearing the half-duplex indication or the resource reselection indication should satisfy the time constraint of the first condition in the foregoing embodiment.

When UE-B1 and UE-B2 send information to each other, and the two UEs are each other's sending UEs, UE-A needs to send a half-duplex indication to the two sending UEs respectively. If the resources for sending the half-duplex indication to UE-B1 and UE-B overlap in the time domain, and the half-duplex indication information cannot be sent to both UEs at the same time due to the capability limitation of UE-A, then UE-A can send the half-duplex indication to UE-B1 and UE-B. The UE with a higher transmission priority sends an indication. If the priorities are the same, an indication is sent to the UE with the smaller frequency domain resource index, such as PRB index, subchannel index, or smaller.

Referring to Figure 14, as shown in Figure 15, when the destination terminal device of the second sideline information is the third terminal device, UE-A needs to send a half-duplex indication or a resource reselection indication to UE-B1 and UE-B2 respectively, However, since UE-A cannot feed back to two UEs at the same time, when the priority value P1 included in the second sideline information is greater than the priority value P2 included in the first sideline information, if the priority value is larger, the priority The smaller the value, the priority of UE-B2 transmission is higher than the priority of UE-B1, then UE-A sends a half-duplex indication or a resource reselection indication to UE-B2. The reason is to retransmit higher-priority services to ensure the reliability of high-priority services.

In the above embodiments provided by the present application, the methods provided by the embodiments of the present application are respectively introduced from the perspective of interaction between various devices. In order to realize the functions in the methods provided by the above embodiments of the present application, the network device or the terminal device may include a hardware structure and/or a software module, and implement the above functions in the form of a hardware structure, a software module, or a hardware structure plus a software module . Whether one of the above functions is performed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution.

The division of modules in the embodiments of the present application is schematic, and is only a logical function division, and there may be other division manners in actual implementation. In addition, each functional module in each embodiment of the present application may be integrated into one processor, or may exist physically alone, or two or more modules may be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules.

Similar to the above concept, as shown in FIG. 16 , an embodiment of the present application further provides an apparatus 1600 for implementing the functions of the network device or the terminal device in the above method. For example, the apparatus may be a software module or a system-on-chip. In this embodiment of the present application, the chip system may be composed of chips, or may include chips and other discrete devices. The apparatus 1600 may include: a processing unit 1601 and a communication unit 1602 .

In this embodiment of the present application, the communication unit may also be referred to as a transceiver unit, and may include a sending unit and/or a receiving unit, which are respectively configured to perform the sending and receiving steps of the network device or the terminal device in the above method embodiments.

Hereinafter, the communication apparatus provided by the embodiments of the present application will be described in detail with reference to FIG. 16 to FIG. 17 . It should be understood that the description of the apparatus embodiment corresponds to the description of the method embodiment. Therefore, for the content not described in detail, reference may be made to the above method embodiment, which is not repeated here for brevity.

A communication unit may also be referred to as a transceiver, transceiver, transceiver, or the like. The processing unit may also be referred to as a processor, a processing single board, a processing module, a processing device, and the like. Optionally, the device for implementing the receiving function in the communication unit 1602 may be regarded as a receiving unit, and the device for implementing the sending function in the communication unit 1602 may be regarded as a transmitting unit, that is, the communication unit 1602 includes a receiving unit and a transmitting unit. A communication unit may also sometimes be referred to as a transceiver, transceiver, or transceiver circuit, or the like. The receiving unit may also sometimes be referred to as a receiver, receiver, or receiving circuit, or the like. The transmitting unit may also sometimes be referred to as a transmitter, a transmitter, or a transmitting circuit, or the like.

When the communication apparatus 1600 performs the function of the first auxiliary terminal device in the flow shown in FIG. 2 in the above embodiment:

a communication unit, configured to acquire first information from a first terminal device, where the first information is used to indicate a first resource reserved by the first terminal device; acquire second information from a second terminal device, the The second information is used to indicate the second resource reserved by the second terminal device;

A letter processing unit, used for the first resource and the second resource to overlap, and when a preset condition is met, send third information or fourth information to the first terminal device through the above-mentioned communication unit, the third The information is used to indicate that the first resource overlaps with other resources, and the fourth information is used to instruct the first terminal device to perform resource reselection.

When the communication apparatus 1600 performs the function of the first terminal device in the flow shown in FIG. 2 in the above embodiment:

a communication unit, configured to send first information, where the first information indicates the first resource reserved by the first terminal device; receive third information or fourth information from the first auxiliary terminal device, the third information It is used to indicate that the first resource overlaps with other resources, and the fourth information is used to instruct the first terminal device to perform resource reselection; the third information or the fourth information is when a preset condition is met. sent;

A processing unit, configured to perform resource reselection according to the third information or the fourth information.

When the communication apparatus 1600 performs the function of assisting the terminal device in the process shown in FIG. 13 in the above embodiment:

The auxiliary terminal device receives the first sideline information from the third terminal device in the first time unit; receives the second sideline information from the fourth terminal device in the first time unit; the destination terminal device of the first sideline information is the first sideline information. four terminal devices; or, the destination terminal device of the first sideline information is the fourth terminal device, and the destination terminal device of the second sideline information is the third terminal device; the auxiliary terminal device sends feedback information to the third terminal device, the said The feedback information is used to instruct the third terminal device to perform resource reselection and send the first sideline information to the fourth terminal device on the reselected resources; or the feedback information is used to instruct the third terminal The device excludes the resource corresponding to the first time unit from the candidate resource set.

When the communication apparatus 1600 performs the function of the third terminal device in the process shown in FIG. 13 in the above embodiment:

The third terminal device sends the first sideline information to the fourth terminal device in the first time unit, and the first time unit is also used for the fourth terminal device to send the second sideline information; the third terminal device receives Feedback information from the fifth terminal device;

The above is just an example, and the processing unit 1601 and the communication unit 1602 may also perform other functions. For more detailed description, refer to the related description in the method embodiment shown in FIG. 2 or 13 , which will not be repeated here.

FIG. 17 shows an apparatus 1700 provided in this embodiment of the present application. The apparatus shown in FIG. 17 may be a hardware circuit implementation of the apparatus shown in FIG. 16 . The communication apparatus can be applied to the flow chart shown above to perform the functions of the terminal device or the network device in the above method embodiments. For convenience of explanation, FIG. 17 only shows the main components of the communication device.

As shown in FIG. 17 , the communication device 1700 includes a processor 1710 and an interface circuit 1720 . The processor 1710 and the interface circuit 1720 are coupled to each other. It can be understood that the interface circuit 1720 can be a transceiver, a pin, an interface circuit or an input/output interface. Optionally, the communication device 1700 may further include a memory 1730 for storing instructions executed by the processor 1710 or input data required by the processor 1710 to execute the instructions or data generated after the processor 1710 executes the instructions.

When the communication apparatus 1700 is used to implement the method shown in FIG. 2 or 13 , the processor 1710 is used to implement the function of the above-mentioned processing unit 1601 , and the interface circuit 1720 is used to implement the function of the above-mentioned communication unit 1602 .

When the above communication device is a chip applied to a terminal device, the terminal device chip implements the functions of the terminal device in the above method embodiments. The terminal device chip receives information from other modules (such as a radio frequency module or an antenna) in the terminal device, and the information is sent by the network device to the terminal device; or, the terminal device chip sends information to other modules (such as a radio frequency module or an antenna) in the terminal device antenna) to send information, the information is sent by the terminal equipment to the network equipment.

When the above communication device is a chip applied to a network device, the network device chip implements the functions of the network device in the above method embodiments. The network device chip receives information from other modules (such as a radio frequency module or an antenna) in the network device, and the information is sent by the terminal device to the network device; or, the network device chip sends information to other modules in the network device (such as a radio frequency module or an antenna). antenna) to send information, the information is sent by the network equipment to the terminal equipment.

It can be understood that the processor in the embodiments of the present application may be a central processing unit, and may also be other general-purpose processors, digital signal processors, application-specific integrated circuits, or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. A general-purpose processor may be a microprocessor or any conventional processor.

The memory in the embodiments of the present application may be random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, registers, hard disks, A removable hard disk or any other form of storage medium known in the art.

As will be appreciated by those skilled in the art, the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, etc.) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the present application. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions The apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

A method for handling resource overlap, comprising:

The first auxiliary terminal device acquires first information from the first terminal device, where the first information is used to indicate the first resource reserved by the first terminal device;

obtaining, by the first auxiliary terminal device, second information from a second terminal device, where the second information is used to indicate a second resource reserved by the second terminal device;

The first resource and the second resource overlap, and when a preset condition is met, the first auxiliary terminal device sends third information or fourth information to the first terminal device, where the third information is used for Indicates that the first resource overlaps with other resources, and the fourth information is used to instruct the first terminal device to perform resource reselection.
The method according to claim 1, wherein the preset condition includes at least one of the following:

In the time domain, the start time of the third resource that carries the third information or the fourth information, the end time of the resource that carries the first message associated with the first information, and the end time of the resource that carries the second information The time intervals between the end moments of the resources of the second message associated with the information are all greater than or equal to the first duration;

In the time domain, the time interval between the end time of the third resource and the start time of the first resource is greater than or equal to the second duration, and/or the end time of the third resource and the first time The time interval between the start moments of the two resources is greater than or equal to the second duration.
The method according to claim 1 or 2, wherein the preset condition includes any one of the following conditions:

The priority of the first message associated with the first information is less than or equal to the priority of the second message associated with the second information;

The priority of the first message is greater than the priority of the second message, and it is determined that the second auxiliary terminal device corresponding to the second terminal device does not send information indicating resource overlap or send an instruction to the second terminal device Information for resource retransmission;

The second terminal device does not have a corresponding auxiliary terminal device;

The priority of the first message is equal to the priority of the second message, and the third resource is located before the fourth resource, and the fourth resource is used to carry information indicating resource overlap to the second terminal device Or information indicating resource retransmission.
The method according to claim 2, wherein the first duration is equal to the sum of the duration required for processing the first information and the second information and the duration required for preparing the third information.
The method according to claim 2 or 4, wherein the second duration is equal to the sum of the duration required to process the third information and the duration required to complete resource reselection, or the second duration is equal to The sum of the time required to process the fourth information and the time required to complete the resource reselection.
The method according to claim 3, wherein the second terminal device does not have a corresponding second auxiliary terminal device, comprising:

The second terminal device does not support being assisted by other terminal devices;

Alternatively, the second terminal device supports being assisted by other terminal devices, but the second terminal device is not configured with the second auxiliary terminal device.
The method according to claim 6, wherein the second terminal device does not support being assisted by other terminal devices, and the second terminal device does not have the ability to check whether resources are preempted; or

The second terminal device does not support being assisted by other terminal devices, and the resource preemption check is not enabled in the resource pool where the second resource is located.
The method according to any one of claims 1 to 7, wherein the first information is associated with a first message, and the third resource is determined according to the first message;

Alternatively, the third resource is determined by the first auxiliary terminal device.
The method according to any one of claims 1 to 8, wherein the first auxiliary terminal device is a destination terminal device of the first information;

Or, the first auxiliary terminal device is a terminal device that has an associated relationship with the first terminal device.
A method for handling resource overlap, comprising:

The first terminal device sends first information, where the first information indicates the first resource reserved by the first terminal device;

The first terminal device receives third information or fourth information from the first auxiliary terminal device, where the third information is used to indicate that the first resource overlaps with other resources, and the fourth information is used to indicate that the first resource overlaps with other resources. The first terminal device performs resource reselection; the third information or the fourth information is sent when a preset condition is met;

The first terminal device performs resource reselection according to the third information or the fourth information.
The method according to claim 10, wherein the preset condition includes at least one of the following:

In the time domain, the start time of the third resource that carries the third information or the fourth information, the end time of the resource that carries the first message associated with the first information, and the end time of the resource that carries the second information The time intervals between the end moments of the resources of the second message are all greater than or equal to the first duration; the second information comes from the second terminal device;

In the time domain, the time interval between the end time of the third resource and the start time of the first resource is greater than or equal to the second duration, and/or the end time of the third resource and the first time The time interval between the start moments of the two resources is greater than or equal to the second duration; the second resource is reserved by the second terminal device.
The method according to claim 10 or 11, wherein the preset condition includes any one of the following conditions:

The priority of the first message associated with the first information is less than or equal to the priority of the second message associated with the second information, and the second information is from the second terminal device;

The priority of the first message is greater than the priority of the second message, and it is determined that the second auxiliary terminal device corresponding to the second terminal device does not send information indicating resource overlap or send an instruction to the second terminal device Information for resource retransmission;

The second terminal device does not have a corresponding auxiliary terminal device;

The priority of the first message is equal to the priority of the second message, and the third resource is located before the fourth resource, and the fourth resource is used to carry information indicating resource overlap to the second terminal device Or information indicating resource retransmission.
The method according to claim 11, wherein the first duration is equal to the sum of the duration required for processing the first information and the second information and the duration required for preparing the third information.
The method according to claim 11 or 13, wherein the second duration is equal to the sum of the duration required to process the third information and the duration required to complete resource reselection, or the second duration is equal to The sum of the time required to process the third information or the fourth information and the time required to complete the resource reselection.
The method according to claim 12, wherein the second terminal device does not have a corresponding second auxiliary terminal device, comprising:

The second terminal device does not support being assisted by other terminal devices;

Alternatively, the second terminal device supports being assisted by other terminal devices, but the second terminal device is not configured to be assisted by other terminal devices.
The method according to claim 15, wherein the second terminal device does not support being assisted by other terminal devices, and the second terminal device does not have the ability to check whether resources are preempted;

Or the second terminal device does not support being assisted by other terminal devices, and the resource preemption check is not enabled in the resource pool where the second resource is located.
The method according to any one of claims 10 to 16, wherein the first information is associated with a first message, and the third resource is determined according to the first message;

Alternatively, the third resource is determined by the first auxiliary terminal device.
The method according to any one of claims 10 to 17, wherein the first auxiliary terminal device is a destination terminal device of the first information;

Or, the first auxiliary terminal device is a terminal device that has an associated relationship with the first terminal device.
The method according to any one of claims 10 to 18, wherein the method further comprises:

The first terminal device updates a candidate resource set of the first terminal device, the candidate resource set includes at least one resource, and the candidate resource set is used for the first terminal device to select resources for data transmission from, and the candidate resource set includes at least one resource. The updated candidate resource set does not include the first resource.
The method according to any one of claims 10 to 19, wherein after the first terminal device performs resource reselection according to the third information or the fourth information, the method further comprises:

The first terminal device sends fifth information, where the fifth information indicates a fifth resource reselected by the first terminal device.
A communication device, comprising:

a communication unit, configured to acquire first information from a first terminal device, where the first information is used to indicate a first resource reserved by the first terminal device; acquire second information from a second terminal device, the The second information is used to indicate the second resource reserved by the second terminal device;

A letter processing unit, used for the first resource and the second resource to overlap, and when a preset condition is met, send third information or fourth information to the first terminal device through the above-mentioned communication unit, the third The information is used to indicate that the first resource overlaps with other resources, and the fourth information is used to instruct the first terminal device to perform resource reselection.
The device according to claim 21, wherein the preset condition comprises at least one of the following:

In the time domain, the start time of the third resource that carries the third information or the fourth information, the end time of the resource that carries the first message associated with the first information, and the end time of the resource that carries the second information The time intervals between the end moments of the resources of the second message associated with the information are all greater than or equal to the first duration;

In the time domain, the time interval between the end time of the third resource and the start time of the first resource is greater than or equal to the second duration, and/or the end time of the third resource and the first time The time interval between the start moments of the two resources is greater than or equal to the second duration.
The device according to claim 21 or 22, wherein the preset condition includes any one of the following conditions:

The priority of the first message is greater than the priority of the second message, and it is determined that the second auxiliary terminal device corresponding to the second terminal device does not send information indicating resource overlap or send an instruction to the second terminal device Information for resource retransmission;

The second terminal device does not have a corresponding auxiliary terminal device;

The priority of the first message is equal to the priority of the second message, and the third resource is located before the fourth resource, and the fourth resource is used to carry information indicating resource overlap to the second terminal device Or information indicating resource retransmission.
The apparatus according to claim 22, wherein the first duration is equal to the sum of the duration required for processing the first information and the second information and the duration required for preparing the third information.
The apparatus according to claim 22 or 24, wherein the second duration is equal to the sum of the duration required to process the third information and the duration required to complete resource reselection, or the second duration is equal to The sum of the time required to process the fourth information and the time required to complete the resource reselection.
The apparatus according to any one of claims 21 to 25, wherein the first information is associated with a first message, and the third resource is determined according to the first message;

Alternatively, the third resource is determined by the first auxiliary terminal device.
The apparatus according to any one of claims 21 to 26, wherein the apparatus is a destination terminal device of the first information;

Or, the apparatus is a terminal device that has an associated relationship with the first terminal device.
A communication device, comprising:

a communication unit, configured to send first information, where the first information indicates the first resource reserved by the first terminal device; receive third information or fourth information from the first auxiliary terminal device, the third information It is used to indicate that the first resource overlaps with other resources, and the fourth information is used to instruct the first terminal device to perform resource reselection; the third information or the fourth information is when a preset condition is met. sent;

A processing unit, configured to perform resource reselection according to the third information or the fourth information.
The device according to claim 28, wherein the preset condition includes at least one of the following:

In the time domain, the start time of the third resource that carries the third information or the fourth information, the end time of the resource that carries the first message associated with the first information, and the end time of the resource that carries the second information The time intervals between the end moments of the resources of the second message are all greater than or equal to the first duration; the second information comes from the second terminal device;

In the time domain, the time interval between the end time of the third resource and the start time of the first resource is greater than or equal to the second duration, and/or the end time of the third resource and the first time The time interval between the start moments of the two resources is greater than or equal to the second duration; the second resource is reserved by the second terminal device.
The device according to claim 28 or 29, wherein the preset condition includes any one of the following conditions:

The priority of the first message associated with the first information is less than or equal to the priority of the second message associated with the second information; the second information is from the second terminal device;

The priority of the first message is greater than the priority of the second message, and it is determined that the second auxiliary terminal device corresponding to the second terminal device does not send information indicating resource overlap or send an instruction to the second terminal device Information for resource retransmission;

The second terminal device does not have a corresponding auxiliary terminal device;

The priority of the first message is equal to the priority of the second message, and the third resource is located before the fourth resource, and the fourth resource is used to carry information indicating resource overlap to the second terminal device Or information indicating resource retransmission.
The apparatus according to claim 29, wherein the first duration is equal to the sum of the duration required for processing the first information and the second information and the duration required for preparing the third information.
The apparatus according to claim 29 or 31, wherein the second duration is equal to the sum of the duration required to process the third information and the duration required to complete resource reselection, or the second duration is equal to The sum of the time required to process the fourth information and the time required to complete the resource reselection.
The apparatus according to any one of claims 28 to 32, wherein the first information is associated with a first message, and the third resource is determined according to the first message;

Alternatively, the third resource is determined by the first auxiliary terminal device.
The apparatus according to any one of claims 28 to 33, wherein the first auxiliary terminal device is a destination terminal device of the first information;

Or, the first auxiliary terminal device is a terminal device that has an associated relationship with the first terminal device.
The device according to any one of claims 28 to 34, wherein the processing unit is further configured to:

updating the candidate resource set of the first terminal device, where the candidate resource set includes at least one resource, the candidate resource set is used for the first terminal device to select resources from which to perform data transmission, and the updated candidate resource The collection does not include the first resource.
A communication device, characterized by comprising a processor and an interface circuit, the interface circuit being configured to receive signals from other communication devices other than the communication device and transmit to the processor or transfer signals from the processor The signal is sent to other communication devices than the communication device, and the processor implements the method according to any one of claims 1 to 20 by executing a computer program or instructions.
A computer-readable storage medium, characterized in that, a computer program or instruction is stored in the storage medium, and when the computer program or instruction is run on a computer, the implementation of any one of claims 1 to 9 is realized. , or as claimed in any one of claims 10 to 20.
A computer program product, characterized in that it includes a computer program or instruction, which, when the computer program or instruction is run on a computer, implements the method as claimed in any one of claims 1 to 9, or as claimed in claim 10 The method of any one of to 20.