CN111385844A

CN111385844A - Resource allocation method, device and equipment

Info

Publication number: CN111385844A
Application number: CN201811640819.9A
Authority: CN
Inventors: 常俊仁
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2020-07-07
Anticipated expiration: 2038-12-29
Also published as: WO2020135558A1; CN111385844B

Abstract

The embodiment of the application provides a resource allocation method. The method comprises the following steps: the method comprises the steps that first terminal equipment receives first information broadcasted by a target cell, wherein the first information comprises N pieces of sidelink SL resource indication information and N pieces of region effective information, each piece of SL resource indication information in the N pieces of SL resource indication information is used for indicating SL resources, the N pieces of region effective information are in one-to-one correspondence with the N pieces of SL resource indication information, each piece of region effective information in the N pieces of region effective information is used for indicating an available region of the corresponding SL resources, the available region indicated by each piece of region effective information comprises at least two regions, N is a positive integer greater than or equal to 1, and the first terminal equipment is one terminal equipment in a terminal equipment group; and the first terminal equipment determines a target SL resource according to the first information, wherein the target SL resource is the SL resource indicated by one of the N SL resource indication information. The technical scheme realizes the cross-region SL communication between the terminals.

Description

Resource allocation method, device and equipment

Technical Field

The present application relates to the field of communications, and in particular, to a method, an apparatus, and a device for resource configuration.

Background

In a vehicle networking (V2X) system, the link used for direct communication between different end devices may be referred to as a Sidelink (SL).

For terminal devices in idle or inactive state, the SL resource configuration used by them is broadcasted by cells, which belong to network devices. Currently, SL resources allocated by network devices may be available in one area. A plurality of cells may be included in one area. All cells in the area of the terminal equipment can use the same SL resources for SL communication. However, when the terminal device moves from one area to another area, the first terminal device may not be able to continue to use the SL resource in the previous area to communicate with the terminal device located in the previous area. For example, assuming that the SL resource 1 is valid in the first area, the terminal device 1 and the terminal device 2 are two terminal devices that perform SL communication. After the terminal device 1 moves from the first area to the second area, the terminal device 1 may no longer be able to communicate with the terminal device 2 using the SL resource 1, or even if the terminal device 1 is able to communicate with the terminal device 2 using the SL resource 1, the service quality thereof may be difficult to satisfy the predetermined requirement.

Disclosure of Invention

The application provides a resource allocation method and related equipment, which can support communication between terminal equipment in cross-regions.

In a first aspect, an embodiment of the present application provides a resource allocation method, including: a first terminal device receives first information broadcasted by a target cell, wherein the target cell belongs to a network device, the first information includes N pieces of SL resource indication information and N pieces of region validity information, each piece of SL resource indication information in the N pieces of SL resource indication information is used for indicating an SL resource, the N pieces of region validity information are in one-to-one correspondence with the N pieces of SL resource indication information, each piece of region validity information in the N pieces of region validity information is used for indicating an available region of the SL resource indicated by the corresponding SL resource indication information, the available region indicated by each piece of region validity information includes at least two regions, the at least two regions include a region where the network device is located, N is a positive integer greater than or equal to 1, and the first terminal device is one terminal device in a terminal device group; the first terminal equipment determines a target SL resource according to the first information, wherein the target SL resource is the SL resource indicated by one of the N SL resource indication information. The target cell broadcasts effective SL resources in at least two areas, and the terminal located in the area range of the network equipment can interact with the terminals in other areas, thereby realizing cross-area SL communication.

In a possible implementation manner of the first aspect, the method further includes: the first terminal device determines target SL occupation indication information, wherein the target SL occupation indication information is used for indicating that the target SL resource determined by the first terminal device is used; the first terminal device sends the target SL occupation indication information to the network device. The terminal device feeds back the SL resources used by the first terminal device to the network device, and the network device can acquire the number of the terminal device groups using the SL resources, so that the network device can comprehensively schedule the service conditions of the SL resources, can timely discover the bad conditions such as resource congestion and low resource utilization rate, can timely adjust the bad conditions, and is favorable for maintaining the network environment.

In a possible implementation manner of the first aspect, the first information further includes Y SL occupation indication information, where the Y SL occupation indication information has a corresponding relationship with the N SL resource indication information, each SL occupation indication information in the Y SL occupation indication information is used to indicate that a corresponding SL resource is used, and Y is a positive integer greater than or equal to 1; the first terminal device determines target SL occupation indication information, including: the first terminal device determines the target SL occupation indication information from the Y SL occupation indication information. The network device configures and broadcasts SL occupation indication information corresponding to SL resources, and the first terminal device can use information with small data volume, small information interference and low congestion rate, such as specific signals, channels and bit values, to feed back the SL resources used by the first terminal device, so that the resource utilization rate is improved, and resource congestion is avoided.

In a possible implementation manner of the first aspect, the Y SL occupation indication information is N SL occupation indication information, and the N SL occupation indication information and the N SL resource indication information are in one-to-one correspondence.

In a possible implementation manner of the first aspect, the Y SL occupation indication messages correspond to Y SL resource indication messages of the N SL resource indication messages one to one.

In a possible implementation manner of the first aspect, one of the Y SL occupancy indication information corresponds to at least one of the N SL resource indication information.

In a possible implementation manner of the first aspect, each of the Y SL occupancy indication information includes at least one SL occupancy identifier, and each of the at least one SL occupancy identifier corresponds to one member number; the first terminal device sends target SL occupation indication information to the network device, including: the first terminal equipment determines a target SL occupation identification from the target SL occupation indication information, and the number of members corresponding to the target SL occupation identification is matched with the number of members of a terminal equipment group where the first terminal equipment is located; the first terminal equipment sends the target SL occupation identification to the network equipment. The terminal device may feed back the number of terminal devices using the SL resource to the network device using the SL occupation identifier configured by the network device. The network equipment can integrally schedule the SL resources according to the number of the SL resource use members, timely discover the bad conditions such as resource congestion and low resource utilization rate, and can timely adjust the bad conditions, thereby being beneficial to maintaining the network environment.

In a possible implementation manner of the first aspect, the method further includes: the first terminal equipment determines target SL release indication information, wherein the target SL release indication information is used for indicating the first terminal equipment to release the target SL resources; the first terminal equipment sends the target SL release indication information to the network equipment. The terminal indicates the network device that the target SL resource is released through the target SL release indication information, so that the network device can obtain the service condition of the target SL resource in real time, and the network device can adjust the resource load.

In a possible implementation manner of the first aspect, the first information further includes Z SL release indication information, where the Z SL release indication information has a corresponding relationship with the N SL resource indication information, each SL release indication information in the Z SL release indication information is used to indicate that a corresponding SL resource is released, and Z is a positive integer greater than or equal to 1; the first terminal equipment determines target SL release indication information, and the method comprises the following steps: the first terminal equipment determines the target SL release indication information from the Z SL release indication information. The network equipment configures and broadcasts SL release indication information corresponding to SL resources, and the first terminal equipment can use information with small data volume, small information interference and low congestion rate, such as specific signals, channels, bit values and the like, to feed back the SL resources released by the first terminal equipment, so that the resource utilization rate is improved, and resource congestion is avoided.

In a possible implementation manner of the first aspect, the Z SL release indication messages are N SL release indication messages, and the N SL release indication messages are in one-to-one correspondence with the N SL resource indication messages.

In a possible implementation manner of the first aspect, the Z SL release indication messages correspond to Z SL resource indication messages of the N SL resource indication messages one to one.

In a possible implementation manner of the first aspect, one of the Z SL release indication information corresponds to at least one of the N SL resource indication information. In a possible implementation manner of the first aspect, each of the Z SL release indication information includes at least one SL release identifier, and each of the at least one SL release identifier corresponds to one member number; the first terminal equipment sends target SL release indication information to the network equipment, and the target SL release indication information comprises the following steps: the first terminal equipment determines a target SL release identification from the target SL release indication information, and the number of members corresponding to the target SL release identification is matched with the number of members of a terminal equipment group where the first terminal equipment is located; the first terminal equipment sends the target SL release identification to the network equipment. The terminal device may feed back the number of terminal devices releasing the SL resource to the network device using the SL occupation identifier configured by the network device. The network equipment can comprehensively schedule the SL resources according to the number of the members released by the SL resources and adjust the resource load in time.

In a possible implementation manner of the first aspect, before the first terminal device acquires the first information broadcast by the target cell, the method further includes: the first terminal equipment determines to reselect from a first cell to a second cell, wherein the first cell belongs to a first area, the second cell belongs to a second area, and the second cell is the target cell; and the first terminal equipment determines the service area of the first terminal equipment as the second area according to the area information or the cell information broadcasted by the second cell. After the terminal device moves from one area to another area, the terminal device triggers the action of acquiring the effective SL resources in at least two areas, so that on one hand, the energy consumption of acquiring the cross-area SL resources by the terminal device can be reduced, on the other hand, the competition between the terminal device which is only interacted in the area and the terminal which is interacted in the cross-area can be avoided, and the utilization rate of the SL resources is improved.

In a possible implementation manner of the first aspect, the determining, by the first terminal device, that the service area of the first terminal device is the second area according to the area information or the cell information broadcast by the second cell, where the area information includes an identifier of the second area includes: and the first terminal equipment determines the service area of the first terminal equipment as the second area according to the identifier of the second area. The terminal equipment can determine that the terminal equipment moves from one area to another area through the area identification, and the data volume of the area identification is less, so that the occupied network resource is less, and the probability of network congestion is reduced.

In a possible implementation manner of the first aspect, the area information includes a second cell identifier list, where the second cell identifier list includes identifiers of all cells located within the second area; the determining, by the first terminal device, the service area of the first terminal device as the second area according to the area information or the cell information broadcasted by the second cell, includes: and the first terminal equipment determines the service area of the first terminal equipment as the second area under the condition that the second cell identification list does not comprise the identification of the first cell. The terminal equipment can determine the change of the area information through the marks of the cells and the cell list, and the complexity of identifying the area information by the terminal equipment is reduced. The terminal device stores the identifier of the first cell, and judges whether the area update occurs or not through a second cell identifier list issued by the network device, and the information amount stored by the terminal device is small.

In a possible implementation manner of the first aspect, the determining, by the first terminal device, that the service area of the first terminal device is the second area according to the area information or the cell information broadcasted by the second cell, where the cell information is an identifier of the second cell, includes: and the first terminal device determines the service area of the first terminal device as the second area under the condition that the first area cell identification list does not include the identification of the second cell, wherein the first area cell identification list includes the identifications of all cells located in the range of the first area. The terminal equipment can determine the change of the area information through the marks of the cells and the cell list, and the complexity of identifying the area information by the terminal equipment is reduced. The terminal equipment stores the first cell identification list, and judges whether area updating occurs or not through the identification of the second cell issued by the network equipment, the data volume issued by the network equipment is small, and network congestion is avoided.

In a possible implementation manner of the first aspect, the determining, by the first terminal device, a target SL resource according to the first information includes: the first terminal device determines target SL resource indication information according to the first information, wherein the target SL resource indication information is used for indicating the target SL resource, and the available area of the target SL resource at least comprises the first area and the second area; and the first terminal equipment determines the target SL resource according to the target SL resource indication information.

In a possible implementation manner of the first aspect, the method further includes: and the first terminal equipment sends the target SL resource indication information to second terminal equipment, wherein the second terminal equipment is any terminal equipment in the terminal equipment group except the first terminal equipment. The first terminal device sends the target SL resource indication information to other terminal devices of the terminal device group, so that the other terminal devices can use the SL resource indicated by the target SL resource indication information, and the signaling interaction of the other terminal devices for acquiring the target SL resource is reduced.

In a possible implementation manner of the first aspect, the target area valid information includes an identifier of the first area, and the target area valid information is used to indicate an available area of the target SL resource. The effective area information does not include the identifier of the area where the network equipment is located, and does not affect the first terminal equipment to acquire the information of the SL resource available area, thereby reducing the waste of signaling resources.

In a possible implementation manner of the first aspect, the target area valid information includes a first cell identification list, where the first cell identification list includes identifications of all cells located within the first area, and the target area valid information is used to indicate an available area of the target SL resource. The effective area information does not include the cell list of the area where the network equipment is located, and does not influence the first terminal equipment to acquire the information of the available area of the SL resources, thereby reducing the waste of signaling resources.

In a second aspect, an embodiment of the present application provides a resource allocation method, including: the network device generates first information, wherein the first information includes N SL resource indication information and N area validity information, each of the N SL resource indication information is used to indicate an SL resource, the N area validity information is in one-to-one correspondence with the N SL resource indication information, each of the N area validity information is used to indicate an available area of the SL resource indicated by the corresponding SL resource indication information, the available area indicated by each of the area validity information includes at least two areas, the at least two areas include an area where the network device is located, and N is a positive integer greater than or equal to 1; the network device broadcasts the first information in a target cell, which belongs to the network device. The target cell broadcasts effective SL resources in at least two areas, and the terminal located in the area range of the network equipment can interact with the terminals in other areas, thereby realizing cross-area SL communication.

In one possible implementation manner of the second aspect, the method further includes: the network device receives target SL occupation indication information sent by the terminal device, wherein the target SL occupation indication information is used for indicating that the target SL resource determined by the first terminal device is used. The network equipment receives the target SL occupation indication information sent by the terminal equipment, and can acquire the number of the terminal equipment groups using the SL resources, so that the network equipment can comprehensively schedule the service condition of the SL resources, can timely discover the bad conditions such as resource congestion and low resource utilization rate, can timely adjust the bad conditions, and is favorable for maintaining the network environment.

In a possible implementation manner of the second aspect, the first information further includes Y SL occupation indication information, the Y SL occupation indication information has a corresponding relationship with the N SL resource indication information, each of the Y SL occupation indication information is used to indicate that the corresponding SL resource is used, and Y is a positive integer greater than or equal to 1. The network equipment configures and broadcasts SL indicating information corresponding to the SL resources, so that the terminal equipment can use information with small data volume, small information interference and low congestion rate such as specific signals, channels and bit values to feed back the SL resources used by the first terminal equipment, the resource utilization rate is improved, and resource congestion is avoided.

In a possible implementation manner of the second aspect, the Y SL occupation indication information is N SL occupation indication information, and the N SL occupation indication information and the N SL resource indication information are in one-to-one correspondence.

In a possible implementation manner of the second aspect, the Y SL occupation indication messages correspond to Y SL resource indication messages of the N SL resource indication messages in a one-to-one manner.

In a possible implementation manner of the second aspect, one of the Y SL occupancy indication information corresponds to at least one of the N SL resource indication information.

In a possible implementation manner of the second aspect, each of the Y SL occupancy indication information includes at least one SL occupancy identifier, and each of the at least one SL occupancy identifier corresponds to one member number; the network device receiving target SL occupation indication information sent by the terminal device comprises: the network equipment receives a target SL occupation identification sent by the first terminal equipment, and the number of members corresponding to the target SL occupation identification is matched with the number of members of a terminal equipment group where the first terminal equipment is located; the method further comprises the following steps: and the network equipment determines the number of the members of the terminal equipment group as the number of the members corresponding to the target SL occupation identifier. The network equipment can integrally schedule the SL resources according to the number of the SL resource use members, timely discover the bad conditions such as resource congestion and low resource utilization rate, and can timely adjust the bad conditions, thereby being beneficial to maintaining the network environment.

In one possible implementation manner of the second aspect, the method further includes: the network equipment receives target SL release indication information determined by the terminal equipment, wherein the target SL release indication information is used for indicating target SL resources released by the terminal equipment. The terminal indicates the network device that the target SL resource is released through the target SL release indication information, so that the network device can obtain the service condition of the target SL resource in real time, and the network device can adjust the resource load.

In a possible implementation manner of the second aspect, the first information further includes Z SL release indication information, where the Z SL release indication information has a corresponding relationship with the N SL resource indication information, each of the Z SL release indication information is used to indicate that a corresponding SL resource is released, and Z is a positive integer greater than or equal to 1. The network equipment configures and broadcasts SL release indication information corresponding to the SL resources, and the terminal equipment can feed back the SL resources released by the terminal equipment by using information with small data volume, small information interference and low congestion rate, such as specific signals, channels, bit values and the like, so that the resource utilization rate is improved, and resource congestion is avoided.

In a possible implementation manner of the second aspect, the Z SL release indication messages are N SL release indication messages, and the N SL release indication messages are in one-to-one correspondence with the N SL resource indication messages.

In a possible implementation manner of the second aspect, the Z SL release indication messages correspond to Z SL resource indication messages of the N SL resource indication messages in a one-to-one manner.

In a possible implementation manner of the second aspect, one of the Z SL release indication information corresponds to at least one of the N SL resource indication information.

In a possible implementation manner of the second aspect, each of the Z SL release indication information includes at least one SL release identifier, and each of the at least one SL release identifier corresponds to one member number; the network equipment receives target SL release indication information sent by the terminal equipment, and the method comprises the following steps: the network equipment receives a target SL release identifier sent by the terminal equipment, and the number of members corresponding to the target SL release identifier is matched with the number of members of a terminal equipment group in which the terminal equipment is located; the method further comprises the following steps: and the network equipment determines the number of the members of the terminal equipment group as the number of the members corresponding to the target SL release identifier. The network device receives the SL occupation identifier configured by the terminal device, and the network device can count the number of the terminal devices releasing SL resources. The network equipment can comprehensively schedule the SL resources according to the number of the members released by the SL resources and adjust the resource load in time.

In one possible implementation manner of the second aspect, the method further includes: the target cell broadcasts area information and/or cell information, where the area information includes an identifier of an area where the network device is located or a target cell identifier list, the target cell identifier list includes identifiers of all cells located within the area where the network device is located, and the cell information is a cell identifier belonging to the network device.

In one possible implementation manner of the second aspect, the method further includes: the network equipment determines that the use of the target SL resource meets a preset condition; the target cell stops broadcasting the target SL resource indication information and the target area validity information corresponding to the target SL resource indication information. When the network device determines that a certain SL resource has network congestion or other bad conditions, the network device may adjust the SL resource broadcast policy by stopping broadcasting, updating system information, or other manners, which is beneficial to maintaining the network environment.

In a possible implementation manner of the second aspect, the determining, by the network device, that the usage of the target SL resource satisfies a preset condition includes: the network equipment determines that the number of terminal equipment groups using the target SL resource is greater than or equal to a first preset threshold value; and/or the network equipment determines that the number of the terminal equipment using the target SL resource is greater than or equal to a second preset threshold value.

In one possible implementation manner of the second aspect, the method further includes: the network device generates second information, where the second information includes M SL resource indication information and M region validity information, where each SL resource indication information in the M SL resource indication information is used to indicate a SL resource, the SL resources indicated by the M SL resource indication information are different from the SL resources indicated by the N SL resource indication information, the M region validity information is in one-to-one correspondence with the M SL resource indication information, each region validity information in the M region validity information is used to indicate an available region of the SL resource indicated by the corresponding SL resource indication information, and M is a positive integer greater than or equal to 1; the network device broadcasts the second information in the target cell.

In a possible implementation manner of the second aspect, each of the area valid information includes an identifier of an adjacent area, and the adjacent area is an area except an area where the network device is located in an available area indicated by each of the area valid information. The effective area information does not include the identifier of the area where the network equipment is located, and does not affect the first terminal equipment to acquire the information of the SL resource available area, thereby reducing the waste of signaling resources.

In a possible implementation manner of the second aspect, the valid information of each area includes a cell identifier list of an adjacent area, where the cell identifier list of the adjacent area includes identifiers of all cells in a range of the adjacent area, and the adjacent area is an area, except for an area where the network device is located, in an available area indicated by the valid information of each area. The effective area information does not include the cell list of the area where the network equipment is located, and does not influence the first terminal equipment to acquire the information of the available area of the SL resources, thereby reducing the waste of signaling resources.

In a third aspect, an embodiment of the present application provides a communication apparatus, including: a receiving module, configured to receive first information broadcast by a target cell, where the target cell belongs to a network device, the first information includes N SL resource indication information and N area validity information, where each of the N SL resource indication information is used to indicate an SL resource, the N area validity information is in one-to-one correspondence with the N SL resource indication information, each of the N area validity information is used to indicate an available area of the SL resource indicated by the corresponding SL resource indication information, the available area indicated by each of the area validity information includes at least two areas, the at least two areas include an area where the network device is located, N is a positive integer greater than or equal to 1, and the communication device is one communication device in a communication device group; and a processing module, configured to determine a target SL resource according to the first information, where the target SL resource is an SL resource indicated by one of the N SL resource indication information.

In a possible implementation manner of the third aspect, the processing module is further configured to determine target SL occupation indication information, where the target SL occupation indication information is used to indicate that the target SL resource determined by the processing module is used; the apparatus further includes a sending module, configured to send the target SL occupation indication information to the network device.

In a possible implementation manner of the third aspect, the first information further includes Y SL occupation indication information, where the Y SL occupation indication information has a corresponding relationship with the N SL resource indication information, each SL occupation indication information in the Y SL occupation indication information is used to indicate that a corresponding SL resource is used, and Y is a positive integer greater than or equal to 1; the processing module is specifically configured to determine the target SL occupancy indication information from the Y SL occupancy indication information.

In a possible implementation manner of the third aspect, the Y SL occupation indication information is N SL occupation indication information, and the N SL occupation indication information and the N SL resource indication information are in one-to-one correspondence.

In a possible implementation manner of the third aspect, the Y SL occupation indication messages correspond to Y SL resource indication messages of the N SL resource indication messages in a one-to-one manner.

In a possible implementation manner of the third aspect, one of the Y SL occupancy indication information corresponds to at least one of the N SL resource indication information.

In a possible implementation manner of the third aspect, each of the Y SL occupancy indication information includes at least one SL occupancy identifier, and each of the at least one SL occupancy identifier corresponds to one member number; the processing module is further configured to determine a target SL occupation identifier from the target SL occupation indication information, where the number of members corresponding to the target SL occupation identifier matches the number of members of a communication device group in which the communication device is located; the sending module is specifically configured to: and sending the target SL occupation identification to the network equipment.

In a possible implementation manner of the third aspect, the processing module is further configured to determine target SL release indication information, where the target SL release indication information is used to instruct the processing module to release the target SL resource; the sending module is further configured to send the target SL release indication information to the network device.

In a possible implementation manner of the third aspect, the first information further includes Z SL release indication information, where the Z SL release indication information has a corresponding relationship with the N SL resource indication information, each of the Z SL release indication information is used to indicate that a corresponding SL resource is released, and Z is a positive integer greater than or equal to 1; the processing module is specifically configured to determine the target SL release indication information from the Z SL release indication information.

In a possible implementation manner of the third aspect, the Z SL release indication messages are N SL release indication messages, and the N SL release indication messages are in one-to-one correspondence with the N SL resource indication messages.

In a possible implementation manner of the third aspect, the Z SL release indication messages correspond to Z SL resource indication messages in the N SL resource indication messages in a one-to-one manner.

In a possible implementation manner of the third aspect, one of the Z SL release indication information corresponds to at least one of the N SL resource indication information.

In a possible implementation manner of the third aspect, each of the Z SL release indication information includes at least one SL release identifier, and each of the at least one SL release identifier corresponds to one member number; the sending module is specifically configured to determine a target SL release identifier from the target SL release indication information, where a member number corresponding to the target SL release identifier matches a member number of a communication device group in which the communication device is located; and sending the target SL release identification to the network equipment.

In a possible implementation manner of the third aspect, the processing module is further configured to determine to reselect from a first cell to a second cell, where the first cell belongs to a first area, the second cell belongs to a second area, and the second cell is the target cell; the processing module is further configured to determine a service area of the communication device as the second area according to the area information or cell information broadcasted by the second cell.

In a possible implementation manner of the third aspect, the area information includes an identifier of the second area, and the processing module is specifically configured to determine, according to the identifier of the second area, that the service area of the communication apparatus is the second area.

In a possible implementation manner of the third aspect, the area information includes a second cell identifier list, where the second cell identifier list includes identifiers of all cells located within the second area; the processing module is specifically configured to determine that the service area of the communication apparatus is the second area when it is determined that the identifier of the first cell is not included in the second cell identifier list.

In a possible implementation manner of the third aspect, the cell information is an identifier of the second cell, and the processing module is specifically configured to, when it is determined that the identifier of the second cell is not included in a first cell identifier list, determine that a service area of the communication apparatus is the second area, where the first cell identifier list includes identifiers of all cells located within a range of the first area.

In a possible implementation manner of the third aspect, the processing module is specifically configured to determine, according to the first information, target SL resource indication information, where the target SL resource indication information is used to indicate the target SL resource, and an available area of the target SL resource at least includes the first area and the second area; the processing module is specifically configured to determine the target SL resource according to the target SL resource indication information.

In a possible implementation manner of the third aspect, the sending module is specifically configured to send the target SL resource indication information to a second terminal device, where the second terminal device is any terminal device in the communication device group except for the communication device.

In a possible implementation manner of the third aspect, the target area valid information includes an identifier of the first area, and the target area valid information is used to indicate an available area of the target SL resource.

In a possible implementation manner of the third aspect, the target area validity information includes a first cell identification list, where the first cell identification list includes identifications of all cells located within the first area, and the target area validity information is used to indicate an available area of the target SL resource.

Alternatively, the communication apparatus of the third aspect may be a terminal device, or may be a component (e.g., a chip or a circuit, etc.) that is available for the terminal device.

In a fourth aspect, an apparatus for configuring resources is provided, the apparatus comprising: a processing module, configured to generate first information, where the first information includes N SL resource indication information and N area validity information, each of the N SL resource indication information is used to indicate a SL resource, the N area validity information is in one-to-one correspondence with the N SL resource indication information, each of the N area validity information is used to indicate an available area of the SL resource indicated by the corresponding SL resource indication information, the available area indicated by each area validity information includes at least two areas, the at least two areas include an area where the communication device is located, and N is a positive integer greater than or equal to 1; and the sending module is used for broadcasting the first information.

In a possible implementation manner of the fourth aspect, the apparatus further includes: a receiving module, configured to receive target SL occupation indication information sent by a terminal device, where the target SL occupation indication information is used to indicate a target SL resource determined by the terminal device.

In a possible implementation manner of the fourth aspect, the first information further includes Y SL occupation indication information, the Y SL occupation indication information has a corresponding relationship with the N SL resource indication information, each SL occupation indication information in the Y SL occupation indication information is used to indicate that the corresponding SL resource is used, and Y is a positive integer greater than or equal to 1.

In a possible implementation manner of the fourth aspect, the Y SL occupation indication information is N SL occupation indication information, and the N SL occupation indication information and the N SL resource indication information are in one-to-one correspondence.

In a possible implementation manner of the fourth aspect, the Y SL occupation indication messages correspond to Y SL resource indication messages of the N SL resource indication messages in a one-to-one manner.

In a possible implementation manner of the fourth aspect, one of the Y SL occupancy indication information corresponds to at least one of the N SL resource indication information.

In a possible implementation manner of the fourth aspect, each of the Y SL occupancy indication information includes at least one SL occupancy identifier, and each of the at least one SL occupancy identifier corresponds to one member number; the receiving module is specifically configured to receive a target SL occupation identifier sent by the terminal device, where the number of members corresponding to the target SL occupation identifier matches the number of members of a terminal device group in which the terminal device is located; the processing module is further configured to determine that the number of members of the terminal device group is the number of members corresponding to the target SL occupation identifier.

In a possible implementation manner of the fourth aspect, the receiving module is further configured to receive target SL release indication information determined by the terminal device, where the target SL release indication information is used to indicate a target SL resource released by the terminal device.

In a possible implementation manner of the fourth aspect, the first information further includes Z SL release indication information, where the Z SL release indication information has a corresponding relationship with the N SL resource indication information, each of the Z SL release indication information is used to indicate that a corresponding SL resource is released, and Z is a positive integer greater than or equal to 1.

In a possible implementation manner of the first aspect, one of the Z SL release indication information corresponds to at least one of the N SL resource indication information.

In a possible implementation manner of the fourth aspect, each of the Z SL release indication information includes at least one SL release identifier, and each of the at least one SL release identifier corresponds to one member number; the receiving module is specifically configured to receive a target SL release identifier sent by the terminal device, where the number of members corresponding to the target SL release identifier matches the number of members in a terminal device group in which the terminal device is located; the processing module is further configured to determine that the number of members of the terminal device group is the number of members corresponding to the target SL release identifier.

In a possible implementation manner of the fourth aspect, the sending module is further configured to broadcast area information and/or cell information, where the area information includes an identifier of an area where the communication apparatus is located or a target cell identifier list, the target cell identifier list includes identifiers of all cells located within the area where the communication apparatus is located, and the cell information is a cell identifier belonging to the communication apparatus.

In a possible implementation manner of the fourth aspect, the processing module is further configured to determine that the usage of the target SL resource satisfies a preset condition; the sending module is further configured to stop broadcasting the target SL resource indication information and the target area validity information corresponding to the target SL resource indication information.

In a possible implementation manner of the fourth aspect, the determining that the usage of the target SL resource satisfies a preset condition includes: determining that the number of terminal equipment groups using the target SL resource is greater than or equal to a first preset threshold; and/or determining that the number of terminal devices using the target SL resource is greater than or equal to a second preset threshold.

In a possible implementation manner of the fourth aspect, the processing module is further configured to generate second information, where the second information includes M SL resource indication information and M region validity information, where each of the M SL resource indication information is used to indicate a SL resource, the SL resource indicated by the M SL resource indication information is different from the SL resource indicated by the N SL resource indication information, the M region validity information is in one-to-one correspondence with the M SL resource indication information, each of the M region validity information is used to indicate an available region of the SL resource indicated by the corresponding SL resource indication information, and M is a positive integer greater than or equal to 1; the sending module is further configured to broadcast the first information.

Alternatively, the communication apparatus of the fourth aspect may be a network device, or may be a component (e.g., a chip or a circuit, etc.) for a network device.

In a fifth aspect, an embodiment of the present application provides a storage medium storing instructions for implementing the method according to the first aspect or any one of the possible implementation manners of the first aspect.

In a sixth aspect, the present application provides a storage medium storing instructions for implementing the method according to the second aspect or any one of the possible implementation manners of the second aspect.

In a seventh aspect, a computer-readable storage medium is provided, which stores program code, which, when run on a computer, causes the computer to perform the method of the first aspect or its various implementations.

In an eighth aspect, a computer-readable storage medium is provided, which stores program code, which, when run on a computer, causes the computer to perform the method of the second aspect or its various implementations.

In a ninth aspect, there is provided a chip system, wherein the chip system comprises at least one processor, and when program instructions are executed in the at least one processor, the functions of the communication apparatus in the third aspect or its various implementations are realized.

A tenth aspect provides a chip system, comprising at least one processor, wherein the program instructions, when executed in the at least one processor, cause the functions of the communication apparatus of the fourth aspect or its various implementations to be implemented.

Drawings

Fig. 1 is a schematic diagram of a V2X communication scenario.

Fig. 2 is a schematic diagram of a V2X network system architecture.

Fig. 3 is a schematic flowchart of a resource allocation method according to an embodiment of the present application.

Fig. 4 is a schematic flowchart of a resource allocation method according to an embodiment of the present application.

Fig. 5 is a schematic flowchart of a resource allocation method according to an embodiment of the present application.

Fig. 6 is a schematic flowchart of a resource allocation method according to an embodiment of the present application.

Fig. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present application.

Fig. 8 is a schematic structural diagram of a network device according to an embodiment of the present application.

Fig. 9 is a schematic configuration diagram of a communication apparatus according to an embodiment of the present application.

Fig. 10 is a schematic configuration diagram of a communication apparatus according to an embodiment of the present application.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

In the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a. b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c can be single or multiple. In addition, in the embodiments of the present application, the words "first", "second", and the like do not limit the number and the execution order. In addition, in the embodiments of the present application, words such as "301", "402", "503" are merely used for identification for convenience of description, and do not limit the order in which steps are performed.

It is noted that, in the present application, words such as "exemplary" or "for example" are used to mean exemplary, illustrative, or descriptive. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a global system for mobile communications (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a long term evolution (long term evolution, LTE) system, a LTE Frequency Division Duplex (FDD) system, a LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication system, a future fifth generation (5G) or New Radio (NR) system, and the like. In addition, the technical solution of the embodiment of the present invention may be applied to future-oriented communication technologies, and as long as a communication system adopting a new communication technology includes V2X communication, the technical solution provided by the embodiment of the present invention is applicable. The system architecture and the service scenario described in the embodiment of the present invention are for more clearly illustrating the technical solution of the embodiment of the present invention, and do not form a limitation on the technical solution provided in the embodiment of the present invention, and it can be known by those skilled in the art that the technical solution provided in the embodiment of the present invention is also applicable to similar technical problems along with the evolution of the network architecture and the appearance of a new service scenario.

To improve the safety and intelligence of the traffic system, the concept of the intelligent traffic system is gradually emerging. The intelligent transportation can utilize a new generation of communication network and data processing capacity, improve the overall efficiency of a transportation system, reduce energy loss and increase the safety and convenience of transportation. V2X is the key technology of the future intelligent transportation system. The vehicle-to-vehicle (V2V) communication mode, the vehicle-to-infrastructure (V2I) communication mode, the vehicle-to-passerby (V2P) communication mode, the vehicle-to-network (V2N) communication mode and other communication modes can obtain a series of traffic information such as real-time road conditions, road information, pedestrian information and the like, so that the driving safety is improved, the congestion is reduced, the traffic efficiency is improved, and the vehicle-mounted entertainment information and the like are provided.

Fig. 1 shows a V2X communication scenario, as shown in fig. 1, when the vehicles communicate with each other through V2V, the vehicles can broadcast information such as their own speed, driving direction, specific location, whether emergency brake is applied, etc. to the surrounding vehicles. The drivers of surrounding vehicles can better sense the traffic condition outside the sight distance by acquiring the information, so that the dangerous condition can be pre-judged and avoided. For V2I communication, besides the above-mentioned interaction of safety information, roadside infrastructure such as Road Side Unit (RSU) can also provide various service information and data network access for vehicles, such as parking charge, in-vehicle entertainment, etc., which greatly improves traffic intelligence.

New radio access technology (NR) is currently the mainstream wireless communication technology, which can support V2X communication with lower delay and higher reliability according to V2X service characteristics and new service requirements. Fig. 2 shows a V2X network system architecture diagram, in the V2X system shown in the figure, there are mainly two air interfaces, i.e., a communication interface (Uu port) between a terminal device and a network device and a communication interface (PC5 port) between a terminal device and a terminal device (e.g., terminal device a and terminal device B in fig. 2), where the Uu port is used for communication between the terminal device and the network device or a roadside unit, and the PC5 port is used for SL communication between the terminal device and the terminal device.

The PC5 port mainly supports two resource allocation modes. The mode 1(Model 1) mainly supports the connected terminal equipment, and the network equipment can allocate special resources through the special wireless network temporary identifier of the terminal equipment; the mode 2(Model 2) mainly aims at the connected terminal device and the idle or inactive terminal device, and the terminal device can acquire the contention resource through the system broadcast message, and the contention resource can be shared by more than one terminal device.

To achieve lower latency, higher reliability V2X communications, a plurality of terminal devices in a V2X system may be divided into terminal device groups. The group of terminal devices may communicate based on SL resources, e.g., group communication. The application scenario requires lower end-to-end delay and higher reliability in cooperative driving with a higher automation level, and the corresponding SL resource allocation also needs to be adapted to be able to maintain a certain level of quality of service (QoS) performance when the span range of the terminal device group is large.

It should be understood that, in the embodiment of the present application, the terminal device group may perform communication based on SL, where the terminal device group performs group communication based on SL resources.

For example, in a group communication scenario, the terminal device group may communicate with each other based on SL resources, including but not limited to unicast, multicast or broadcast, for example, one or more terminal devices in the terminal device group may communicate with any other one or more terminal devices in the terminal device group, and one or more terminal devices in the terminal device group may also communicate with any other one or more terminal devices outside the terminal device group, in other words, the case that any one or more terminal devices in the terminal device group communicate with any other one or more terminal devices may be categorized as a group communication scenario, where any other one or more terminal devices are not limited to belong to the terminal device group.

It should also be understood that, for convenience of understanding the technical solutions in the present application, in the embodiments of the present application, group communication is performed by using a terminal device group as an example for description, but the method in the embodiments of the present application is not limited to be applied to group communication. It should also be understood that the method of the embodiments of the present application is not limited to be applied to V2X communication, but may also be applied to Device-to-Device (D2D) communication.

The network device in the embodiment of the present application may be a device for communicating with a terminal device, the network device may be a Base Transceiver Station (BTS) in a global system for mobile communications (GSM) system or a Code Division Multiple Access (CDMA) system, may also be a base station (NodeB, side) in a Wideband Code Division Multiple Access (WCDMA) system, may also be an evolved NodeB (eNB, or eNodeB) in an LTE system, may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or may be a relay station, an access point, a vehicle-mounted device, a network device in a vehicle networking system, a road unit (RSU) in a future 5G network, or a network device in a future PLMN, and the like, the embodiments of the present application are not limited.

Terminal equipment in the embodiments of the present application may refer to user equipment, access terminals, subscriber units, subscriber stations, mobile stations, remote terminals, mobile devices, user terminals, wireless communication devices, user agents, or user devices. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved Public Land Mobile Network (PLMN), and the like, which are not limited in this embodiment.

In addition, various aspects or features of the present application may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used herein is intended to encompass a computer program accessible from any computer-readable device, carrier, or media. For example, computer-readable media can include but are not limited to magnetic storage devices (e.g., hard disk, floppy disk, magnetic strips, etc.), optical disks (e.g., Compact Disk (CD), Digital Versatile Disk (DVD), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROM), card, stick, or key drive, etc.). In addition, various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" can include, without being limited to, wireless channels and various other media capable of storing, containing, and/or carrying instruction(s) and/or data.

In the embodiment of the application, the terminal device or the network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a Central Processing Unit (CPU), a Memory Management Unit (MMU), and a memory (also referred to as a main memory). The operating system may be any one or more computer operating systems that implement business processing through processes (processes), such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer comprises applications such as a browser, an address list, word processing software, instant messaging software and the like. Furthermore, the embodiment of the present application does not particularly limit the specific structure of the execution main body of the method provided by the embodiment of the present application, as long as the communication can be performed according to the method provided by the embodiment of the present application by running the program recorded with the code of the method provided by the embodiment of the present application, for example, the execution main body of the method provided by the embodiment of the present application may be a terminal device or a network device, or a functional module capable of calling the program and executing the program in the terminal device or the network device.

The terminal device group may include a plurality of terminal devices, and the plurality of terminal devices in the terminal device group may all be in an idle state or an inactive state (or RRC idle state); or, some terminal devices in the terminal device group are in an idle state or an inactive state (or an RRC idle state), and some terminal devices are in a connected state (or a Radio Resource Control (RRC) connected state). In some scenarios (e.g., 5G NR V2X scenario), the group of terminal devices may be referred to as a queue (playon).

The terminal devices in the terminal device group can communicate with each other through SL, and one or more terminal devices in the terminal device group can also communicate with one or more other terminal devices outside the terminal device group through SL. For example, the first terminal device may communicate with any one or more of the other terminal devices based on SL, and any one or more of the other terminal devices may also communicate with each other, where the communication method includes but is not limited to unicast, multicast, or broadcast. Any one or more of the first terminal device or the other terminal devices may further communicate with another one or more terminal devices outside the terminal device group, which is not limited in this embodiment of the application. SL resources required for the group of terminal devices to perform group communication may be configured by the network device. For example, when the terminal device is in an idle state or an inactive state, the terminal device may acquire SL resources required for group communication of the terminal device group through system information broadcast of the network.

After the terminal equipment acquires the SL resources distributed by the network, group communication can be carried out based on the SL resources.

301, the network device generates first information, where the first information includes N SL resource indication information and N area validity information, each of the N SL resource indication information is used to indicate a SL resource, the N area validity information is in one-to-one correspondence with the N SL resource indication information, each of the N area validity information is used to indicate an available area of the SL resource indicated by the corresponding SL resource indication information, the available area indicated by each of the area validity information includes at least two areas, the at least two areas include an area where the network device is located, and N is a positive integer greater than or equal to 1.

The first information may be transmitted through system information. The first information may also be any information carried in system information. A region is a set of cells consisting of a plurality of cells. The SL resources being valid in at least two regions may refer to: the SL resources are preconfigured or pre-negotiated SL resources that are usable in both of the at least two regions. The SL resource may be a dedicated SL resource, or a SL resource determined by network device configuration or negotiation between network devices, which is not limited in this embodiment of the present application.

For convenience of description, in the embodiments of the present application, such SL resources in which the available region includes at least two regions may be referred to as cross-region SL resources. In other words, one cross-region SL resource may be available in at least two regions. The terminal device may communicate with other terminal devices in the at least two areas using the cross-region SL resource in the at least two areas where the cross-region SL resource is valid.

For example, assuming that the network device is located in area 1, SL resource 1 is the SL resource indicated by one of the SL resource indication information in the first information broadcast by the target cell belonging to the network device, and the available area of SL resource 1 includes area 1 and area 2. In this case, one terminal device in the area 1 may use the SL resource 1 to perform SL communication with other terminal devices in the area 1, and a terminal device may also use the SL resource 1 to perform SL communication with other terminal devices in the area 2.

Further, for convenience of description, the SL resources that are valid only in one region are referred to as region-level SL resources in the embodiment of the present application. In other words. An area-level SL resource is only available in the area where the target cell broadcasting the area-level SL resource is located. The terminal device may communicate with other terminal devices within the unique area using the area-level SL resources in the unique area where the area-level SL resources are available.

For example, assuming that the network device is located in area 2, SL resource 2 is an area level SL resource broadcast by the target cell, the target cell belongs to the network device, and SL resource 2 is only valid in area 2. In this case, one terminal device in the area 2 can perform SL communication with other terminal devices in the area 2 using the SL resource 2, and it is difficult for the terminal device to perform SL communication with other terminal devices in areas other than the area 2 using the SL resource 2. Also, when the terminal device moves to another area other than the area 2, it is difficult for the terminal device to perform SL communication using the SL resource 2.

Optionally, each of the N SL resource indication information may directly indicate one SL resource. The SL resources may be one or more of time-frequency resources, time-domain resources, frequency-domain resources, code-domain resources, spatial-domain resources, and the like. For example, the SL resource indication information may include an available frequency range, a time-frequency location, and the like. As another example, the SL resource indication information may include available time units. The time unit here may be a slot, a subframe, a mini-slot (mini-slot), etc. The embodiments of the present application do not limit this.

Optionally, the N SL resource indication information may also be N SL indexes, and each of the N SL indexes corresponds to one SL resource. In other words, different SL resources may correspond to different SL indexes. The network device and the terminal device may store a correspondence between the SL resource and the SL index. Thus, the network device can indicate the SL resource to the terminal device by sending the SL index.

The N SL resource indication information and the N region validity information are in one-to-one correspondence. One SL resource indication information and corresponding area valid information may be collectively referred to as SL resource configuration information. In other words, the first information may include N SL resource configuration information, and each resource configuration information of the N resource configuration information includes one SL resource indication information and one region validity information.

The N SL resource indication information and the N area validity information are in one-to-one correspondence, and there is a correspondence between the SL resource indicated by each of the N SL resource indication information and the area validity information corresponding to each of the SL resource indication information. In other words, each region valid information has a corresponding SL resource. For example, the SL resource indication information a corresponds to the area availability information a, and the SL resource a indicated by the SL resource indication information a corresponds to the area availability information a. In this case, the SL resource a may be used within the available area indicated by the area effective information a.

Optionally, there are various ways for the region valid information to indicate the available region of the SL resource across regions.

Optionally, in some embodiments, the area valid information may include an Identification (ID) of the available area. By indicating the ID of the area, the terminal device can directly determine the available range of the area valid information according to the ID of the area.

Optionally, in other embodiments, the area validity information may include IDs of all cells within the available area. The terminal device can indirectly determine the usable area by the ID of the cell. For example, the SL resource 1 is valid in the area 1 and the area 2, the cells belonging to the area 1 include the cell 1, the cell 2, and the cell 3, the cells belonging to the area 2 include the cell 4 and the cell 5, the area validity information 1 corresponding to the SL resource 1 includes the valid cell id list 1, and the valid cell id list 1 includes the ids of the cells 1 to 5. Thus, the terminal device may determine that the SL resource 1 is valid in the cell 1 to the cell 5 according to the valid cell identifier list. For example, if the terminal device reselects from cell 1 to cell 5, the terminal device may determine that SL communication can be performed with other terminal devices in area 1 and area 2 using SL resource 1 according to the valid cell identifier list 1.

Optionally, in some embodiments, the area valid information may indicate all available areas of the corresponding SL resource. For example, if the area validity information is the ID of the available area, the area validity information may include the identifiers of all areas in which the SL resource corresponding to the area validity information is valid. For example, the SL resource 1 is valid in the area 1 and the area 2, and the area validity information 1 corresponding to the SL resource 1 may include the ID of the area 1 and the ID of the area 2.

Optionally, in other embodiments, the area valid information may indicate an available area of the corresponding SL resource except for the network device. For convenience of description, in the embodiments of the present application, areas except for the area where the network device is located in the available area indicated by each area valid information are collectively referred to as adjacent areas. For example, assuming that the network device is located in area 1, the area 1 includes five cells from area 2 to area 6. SL resource 1 is valid in area 1 and area 2, and the adjacent area in area validity information 1 corresponding to SL resource 1 is area 2. SL resource 2 is valid in area 1 and area 3, and the adjacent area in area validity information 2 corresponding to SL resource 2 is referred to as area 3. The SL resource 3 is valid in the area 1, the area 4, the area 5, and the area 6, and the adjacent areas in the area valid information 3 corresponding to the SL resource 3 refer to the area 4 to the area 6. For example, if the area valid information is the ID of the available area, the area valid information 1 may only include the identifier of the area 2, but not include the identifier of the area 1; the area valid information 2 may include only the identification of the area 3, but not the identification of the area 1; the area effective information 3 may include only the identifications of the areas 4 to 6, not the identification of the area 1. The area effective information acquired by the terminal device is assumed to be area effective information 1. The terminal device acquires the area valid information 1 from the network device in the area 1, so that the terminal device can determine that the corresponding SL resource 1 is valid in the area 1. Since the area validity information 1 also includes the ID of the area 2, the terminal device can determine that the SL resource 1 is also valid in the area 2.

Similarly, if the area valid information includes the cell ID, the area valid information may include a cell identifier list of an adjacent area, where the cell identifier list of the adjacent area includes identifiers of all cells in the range of the adjacent area. For example, assuming that the network device is located in area 1, the SL resource 1 is valid in area 1 and area 2, and the area validity information 1 corresponding to the SL resource 1 only includes the cell id within area 2 and does not include the cell id within area 1.

Optionally, the target cell may broadcast the area-effective information of the area-level SL resources, where the area-effective information of the area-level SL resources only includes information indicating an identifier of an area where the network device is located. For example, the network device is located in the range of the area 1, and the area valid information corresponding to the area level SL resource 1 is the identifier of the area 1. For another example, the network device is located in the range of the area 2, and the area valid information corresponding to the area level SL resource 2 is the identifiers of all the cells in the range of the area 2.

302, the network device broadcasts the first information at a target cell, the target cell belonging to the network device. Correspondingly, the first terminal device receives the first information broadcast by the target cell, and the first terminal device is one terminal device in the terminal device group.

The terminal device group is a terminal device group, and the terminal device group at least comprises one terminal device except the first terminal device. The terminal device group may communicate with each other based on the sidelink resource, including but not limited to unicast, multicast or broadcast, for example, one or more terminals in the terminal device group may communicate with any other one or more terminals in the terminal device group, and one or more terminals in the terminal device group may also communicate with any other one or more terminals outside the terminal device group, in other words, the situation that any one or more terminals in the terminal device group communicate with any other one or more terminals may be categorized as a group communication scenario, where any other one or more terminals are not limited to belong to the terminal device group.

Optionally, the first terminal device may be any one terminal in the terminal device group, or may be a head terminal in the terminal device group, or may be a terminal reselected to a new area first among the terminals in the group. The head terminal may be a terminal responsible for group communication.

Optionally, the SL resource indicated by each SL resource indication information in the N SL resource indication information indications may be a resource shared by the terminal device group, or may include an SL resource corresponding to each terminal in the terminal device group (that is, the SL resource indicated by each SL resource indication information in the N SL resource indication information indications may include an independent SL resource corresponding to each terminal).

Optionally, the network device may broadcast the first information in the target cell in various manners. For example, the target cell may broadcast a message 1 and a message 2, where the message 1 carries N SL resource indication information, and the message 2 carries N area validity information. For another example, the target cell may broadcast N messages 3, where the message 3 carries 1 SL resource indication information and 1 corresponding area validity information.

303, the first terminal device determines a target SL resource according to the first information, where the target SL resource is an SL resource indicated by one of the N SL resource indication information.

Optionally, the first terminal device may determine the target SL resource in various forms. For example, the first terminal device uses the target SL resource for group communication. For another example, the first terminal device requests to use the target SL resource before using the target SL resource (may request from the network device or request from another terminal device to ensure that the target SL resource to be used is not used by another terminal device, so as to prevent communication interference, which is not limited in this application). For another example, the first terminal device determines that the target SL resource is to be used before using the target SL resource.

Optionally, the first terminal device may determine the target SL resource according to the N SL resource indication information and the N region validity information.

In one example, the first terminal device excludes a part of SL resources according to the N pieces of region validity information, and determines a target SL resource from the remaining SL resources. In other words, the first terminal device may exclude the SL resource that may cause the communication to be invalid according to the N pieces of area validity information, and determine the target SL resource from the remaining SL resources. For example, the first information includes SL resource indication information 1 and SL resource indication information 2 indicating SL resource 1 and SL resource 2, respectively, and area validity information 1 and area validity information 2 corresponding to the SL resource indication information 1 and the SL resource indication information 2, respectively, where the available area of the SL resource 1 is area 1 and area 2, the available area of the SL resource 2 is area 2 and area 3, and the first terminal device is located within the area 2 and performs group communication with other terminal devices in the area 1; if the first terminal device uses the SL resource 2, it may cause the group communication with other terminal devices in the area 1 to be invalid, and the first terminal device may exclude the SL resource 2 according to the area validity information 1 and the area validity information 2, and determine that the SL resource 1 is the target SL resource.

Optionally, the first terminal device determines target SL resource indication information according to the N SL resource indication information, where the target SL resource indication information is used to indicate the target SL resource, and an available area indicated by target area validity information corresponding to the target SL resource indication information includes the first area and an area where the network device is located; and the first terminal equipment determines the target SL resource according to the target SL resource indication information.

In one example, the first terminal device may randomly determine one SL resource indication information as the target SL resource indication information from the N SL resource indication information. For example, the first information includes N SL resource indication information 1 to N, available areas of SL resources indicated by the N SL resource indication information are area 1 and area 2, and the first terminal device randomly determines one of the N SL resource indication information as the target SL resource indication information.

In an example, the first terminal device may select prejudged SL resource indication information from N SL resource indication information, determine whether the prejudged SL resource indication information would cause group communication to be invalid according to prejudged region validity information corresponding to the prejudged SL resource indication information, and if the group communication is valid, determine that a resource indicated by the prejudged SL resource indication information is a target SL resource; if the group communication is invalid, new prejudgment SL resource indication information is selected from the rest N-1 SL resource indication information until the selected prejudgment SL resource indication information does not cause the group communication to be invalid. For example, the first information includes N SL resource indication information 1 to N, where available areas of SL resources indicated by some of the N SL resource indication information are area 1 and area 2, available areas of SL resources indicated by the remaining SL resource indication information are area 2 and area 3, and the first terminal device is located in area 2 and performs group communication with other terminal devices within the range of area 1; the first terminal equipment randomly selects SL resource indication information K, judges whether the SL resource indicated by the SL resource indication information K causes group communication invalidation, and randomly selects one SL resource indication information again if the SL resource indicated by the SL resource indication information K causes the group communication invalidation; and if the group communication is effective, determining the SL resource indication information K as target SL resource indication information, and determining the target SL resource according to the target SL resource indication information.

Optionally, the first terminal device may determine, according to the N pieces of region validity information, that the SL resource corresponding to the N pieces of region validity information is a cross-region SL resource. In other words, the first terminal device may determine that a SL resource is a cross-regional SL resource rather than a regional SL resource according to the N pieces of regional valid information. For example, the region validity information 1 corresponding to the SL resource 1 indicates that the SL resource 1 is valid in the region 1 and the region 2, and the first terminal device may determine that the SL resource 1 is a cross-region SL resource.

Optionally, each of the N SL resource indication information may include 1 bit, and in a case where the bit is 1, the SL resource indication information may be indicated as a cross-region SL resource, and in a case where the bit is 0, the SL resource indication information may be indicated as a region-level SL resource.

Optionally, the first terminal device sends the target SL resource indication information to a second terminal device, where the second terminal device is any terminal device in the terminal device group except for the first terminal device. In other words, the first terminal device sends the target SL resource indication information to the other terminal devices of the terminal device group. The other terminal device may use the SL resource indicated by the target SL resource indication information. For example, after determining the target SL resource indication information, the first terminal device sends the target SL resource indication information to the second terminal device, and the second terminal device may obtain and use the target SL resource after receiving the target SL resource indication information.

Optionally, there may be multiple situations when the first terminal device acquires the cross-region SL resource. For example, the first terminal device periodically acquires the cross-region SL resource. For another example, the first terminal device randomly triggers the action of acquiring the cross-region SL resource.

Optionally, the first terminal device may determine whether to trigger an action of determining the target SL resource according to the location information of the first terminal device. In other words, when the first terminal device reselects to a cell of a new area, an action of acquiring the cross-area SL resources may be triggered.

In one example, the first terminal device learns in advance that the first terminal device is about to move from a first area to a second area according to a planned driving route, and the first terminal device may trigger an action of acquiring a cross-area SL resource, receive a first system message broadcast by the target cell, and acquire an SL resource that is valid in both the first area and the second area. In other words, in this case, the network device is a network device within the first area.

In one example, the first terminal device moves from a first area to a second area, and the first terminal device may obtain SL resources valid in both the first area and the second area from within the first information broadcast by the target cell. In other words, in this case, the network device is a network device within the second area.

In the embodiment of the application, the network device broadcasts effective SL resources in at least two areas in the target cell, and the terminal located in the area range of the network device can interact with the terminals in other areas, so that cross-area SL communication is realized.

401, the network device generates first information, where the first information includes N SL resource indication information and N area validity information, each of the N SL resource indication information is used to indicate a SL resource, the N area validity information is in one-to-one correspondence with the N SL resource indication information, each of the N area validity information is used to indicate an available area of the SL resource indicated by the corresponding SL resource indication information, the available area indicated by each of the area validity information includes at least two areas, the at least two areas include an area where the network device is located, and N is a positive integer greater than or equal to 1.

402, the network device broadcasts the first information at a target cell, the target cell belonging to the network device. Correspondingly, the first terminal device receives the first information broadcast by the target cell, and the first terminal device is one terminal device in the terminal device group.

And 403, the first terminal device determines a target SL resource according to the first information, where the target SL resource is an SL resource indicated by one of the N SL resource indication information.

The specific implementation manner of steps 401 to 403 may refer to steps 301 to 303 in the embodiment shown in fig. 3, and thus, details are not described herein.

404, the first terminal device determines target SL occupation indication information, where the target SL occupation indication information is used to indicate the target SL resource determined by the first terminal device.

Optionally, the target SL occupation indication information may include target SL resource indication information. In other words, the first terminal device receives the target SL resource indication information sent by the network device, and determines the target SL resource indication information as the target SL occupation indication information. Thus, the SL resource indicated by the target SL resource indication information can be indicated to the network device. For example, the first terminal device sends the target SL resource indication information to the network device, and then the network device may determine, according to the target SL resource indication information, that the SL resource indicated by the target SL resource indication information is occupied by the first terminal device.

Optionally, the target SL occupation indication information may include indication information indicating that the SL resource is only the target SL resource. In other words, the target SL occupancy indication information does not indicate SL resources other than the target SL resource. Alternatively, the target SL occupation indication information may directly indicate the target SL resources. The target SL resource may be one or more of a time-frequency resource, a time-domain resource, a frequency-domain resource, a code-domain resource, a space-domain resource, and the like, and the target SL occupation indication information may include an available frequency range, a time-frequency position, and the like. The target SL occupancy indication information may include time units. The time unit here may be a slot, a subframe, a mini-slot, etc. The embodiments of the present application do not limit this.

Optionally, the target SL occupation indication information may further include a SL index corresponding to the target SL resource. Different SL resources may correspond to different SL indexes. The network device and the first terminal device may store a correspondence between the SL resource and the SL index. Thus, the first terminal device may indicate the SL resource to the network device by sending the SL index.

Optionally, the first information further includes Y SL occupation indication information, where the Y SL occupation indication information has a corresponding relationship with the N SL resource indication information, each SL occupation indication information in the Y SL occupation indication information is used to indicate that a corresponding SL resource is used, and Y is a positive integer greater than or equal to 1; the first terminal device determines target SL occupation indication information, including: the first terminal device determines the target SL occupation indication information from the Y SL occupation indication information. In other words, the first terminal device determines the target SL occupation indication information from Y SL occupation indication information, where at least one of the Y SL occupation indication information is used to indicate the target SL resource. .

Optionally, the Y SL occupation indication information is N SL occupation indication information, and the N SL occupation indication information corresponds to the N SL resource indication information one to one. For example, the first information includes SL resource indication information 1, SL resource indication information 2, SL resource indication information 3, and SL occupation indication information 1, SL occupation indication information 2, and SL occupation indication information 3, where the SL resource indication information 1 corresponds to the SL occupation indication information 1, the SL resource indication information 2 corresponds to the SL occupation indication information 2, and the SL resource indication information 3 corresponds to the SL occupation indication information 3.

Optionally, the Y SL occupation indication information corresponds to Y SL resource indication information in the N SL resource indication information one to one. For example, the first information includes SL resource indication information 1, SL resource indication information 2, SL resource indication information 3, and SL occupation indication information 1 and SL occupation indication information 2, where the SL resource indication information 1 corresponds to the SL occupation indication information 1, and the SL resource indication information 2 corresponds to the SL occupation indication information 2.

Optionally, one of the Y SL occupation indication information corresponds to at least one of the N SL resource indication information. For example, the first information includes SL resource indication information 1, SL resource indication information 2, SL resource indication information 3, and SL occupation indication information 1, SL occupation indication information 2, SL occupation indication information 3, and SL occupation indication information 4, where the SL resource indication information 1 corresponds to the SL occupation indication information 1, the SL resource indication information 2 corresponds to the SL occupation indication information 2, and the SL resource indication information 3 corresponds to the SL occupation indication information 3 and the SL occupation indication information 4. The SL occupation indication information may include a dedicated random access preamble (preamble), or other information that may be used to indicate the SL resource used by the first terminal device, which is determined through network device configuration or negotiation between network devices.

Taking a preamble as an example, the Y pieces of SL occupation indication information may be preamble1, preamble2 … preamble I … preamble Y, where I is greater than or equal to 1 and less than or equal to Y, the Y preambles and the Y pieces of SL resource indication information have a corresponding relationship, the preamble I is one of the Y preambles, and the preamble I is used to indicate that the SL resource I is used. The first terminal equipment determines the preamble I from the Y preambles. In other words, the SL resource I indicated by the preamble I is the target SL resource. Thus, the first terminal device indicates the SL resource I to the network device by sending preamble I. Then, after receiving the preamble I, the network device may determine that the SL resource I is used by a terminal device group.

In one example, the Y SL occupancy indication information is configured for the network device. For example, the network device configures each SL occupation indication information of the Y SL occupation indication information to correspond to one SL index, and one SL index to correspond to one SL resource. The network device stores the corresponding relationship between the SL resource and the SL index. Thus, the first terminal device may indicate the target SL resource to the network device by sending the SL index.

Optionally, the target SL occupation indication information may include an occupation stamp indicating that the indicated SL resource of the SL occupation indication information is occupied. Taking preamble I in the above as an example, the first terminal device sends the preamble I and the occupation stamp to the network device, and the network device may determine that the SL resource I is occupied by the first terminal device according to the preamble I and the occupation stamp.

Optionally, each of the Y SL occupancy indication information includes at least one SL occupancy identifier, and each of the at least one SL occupancy identifier corresponds to one member number; the first terminal device sends target SL occupation indication information to the network device, including: the first terminal equipment determines a target SL occupation identification from the target SL occupation indication information, and the number of members corresponding to the target SL occupation identification is matched with the number of members of a terminal equipment group where the first terminal equipment is located; the first terminal equipment sends the target SL occupation identification to the network equipment.

Alternatively, the number of members may be a number, such as 11 members; the number of members may also be a range of values, such as 11-20 members.

The matching between the SL occupation identifier and the number of members in the terminal device group referred to in this embodiment may mean that the number of members corresponding to the SL occupation identifier is the same as the number of members in the terminal device group, for example, the number of members in the terminal device group where the first terminal device is located is 10, the number of members corresponding to one SL occupation identifier is 10, and then the number of members in the terminal device group is matched with the number of members corresponding to the SL occupation identifier.

The matching between the SL occupation identifier and the number of members in the terminal device group in the embodiment of the present application may also mean that the number of members in the terminal device group is within the range of the number of members corresponding to the SL occupation identifier. For example, if the number of members corresponding to one SL occupation identifier is 11 to 20 and one terminal device group includes 15 member devices, the number of members corresponding to the SL occupation identifier matches the number of members of the terminal device group.

Alternatively, each SL occupation identification of the at least one SL occupation identification may correspond to only one member number. In other words, the target SL occupation identity does not indicate other information than the number of members, such as target SL resources, etc. For example, there are a trans-regional SL resource 1 and a trans-regional SL resource 2, SL occupation indication information indicating the trans-regional SL resource 1 is SL occupation indication information 1, SL occupation indication information indicating the trans-regional SL resource 2 is SL occupation indication information 2, both the SL occupation indication information 1 and the SL occupation indication information 2 include a SL occupation identifier 1 and a SL occupation identifier 2, the number of members corresponding to the SL occupation identifier 1 may be 10, and the number of members corresponding to the SL occupation identifier 2 may be 20. Thus, for each SL occupancy identity, only the corresponding number of members may be indicated.

Optionally, each SL occupation identifier of the at least one SL occupation identifier may correspond to one member number, and may further indicate the SL resource indicated by the SL occupation indication information. In other words, the SL occupancy identity may indicate a unique SL resource. For example, there are a trans-regional SL resource 1 and a trans-regional SL resource 2, SL occupation indication information indicating the trans-regional SL resource 1 is SL occupation indication information 1, SL occupation indication information indicating the trans-regional SL resource 2 is SL occupation indication information 2, the SL occupation indication information 1 includes a SL occupation identifier 1 and a SL occupation identifier 2, the SL occupation indication information 2 includes a SL occupation identifier 3 and a SL occupation identifier 4, and the SL occupation identifier 1, the SL occupation identifier 2, the SL occupation identifier 3, and the SL occupation identifier 4 are different from each other. The number of members indicated by the SL occupation mark 1 is 1-10, the number of members indicated by the SL occupation mark 2 is 11-20, the number of members indicated by the SL occupation mark 3 is 21-30, and the number of members indicated by the SL occupation mark 4 is 31-40. Therefore, corresponding to each SL occupation identifier, one SL resource may be uniquely determined, and one member number may also be uniquely determined.

Taking preamble as an example, the at least one SL occupation identifier may be preamble1, preamble2 … preamble J … preamble P, where J is greater than or equal to 1 and is less than or equal to P, and P is an integer greater than or equal to 1; the preamble J is one of the P preambles, and corresponds to one member number. preamble J may represent a numerical value of the number of matched members, e.g., J; preamble J may also represent a range of member numbers that match, e.g., 10-20. And the first terminal equipment determines the preamble J from the P preambles, wherein the member number indicated by the preamble J is matched with the member number of the terminal equipment group where the first terminal equipment is located. preamble1 to preamble P each indicate that SL resource 1 is used. Then, after receiving preamble J, the network device may determine that SL resource 1 is used by a terminal device group, and the terminal device group includes 10 to 20 terminal devices.

405, the first terminal device sends the target SL occupation indication information to the network device. Correspondingly, the network device receives the target SL occupation indication information sent by the first terminal device.

406, the network device determines that the target SL resource is used by the first terminal device.

Optionally, the network device may determine that the target SL resource is used by the terminal device group where the first terminal device is located. For example, in a case where the first terminal device uses the target SL resource for group communication of the terminal device group, the network device may determine that the target SL resource is used by the terminal device group in which the first terminal device is located.

Optionally, the network device may determine, according to the target SL occupation indication information, a total sum of the number of terminal device groups using the target SL resource. In other words, in the case that only one terminal device in each terminal device group using the target SL resource sends the target SL occupation indication information to the network device, and each terminal device using the target SL resource uses the target SL resource for group communication, the network device may count the number of times the target SL occupation indication information is received, and determine the total number of terminal device groups using the target SL resource. For example, the network device receives the target SL occupation indication information 4 times, and the network device may determine that there are 4 terminal device groups using the target SL resource.

Optionally, the network device may determine, according to the target SL occupation identifier, a sum of the number of terminal devices using the target SL resource and a sum of the number of terminal device groups using the target SL resource.

In one example, in a case where the target SL occupation identity uniquely identifies the target SL resource but the number of members corresponding to the target SL occupation identity is a numerical range, the network device may determine the sum of the number of terminal device groups using the target SL resource. For example, the network device receives SL occupation identifier 1 for 4 times, the number of members corresponding to SL occupation identifier 1 is 10 to 25, the SL resource corresponding to SL occupation identifier 1 only has SL resource 1, the network device may determine that there are 4 terminal device groups using SL resource 1, and a total of 40 to 100 terminal devices use the target SL resource.

In one example, in a case where the target SL occupation identifier uniquely identifies the target SL resource and the number of members corresponding to the target SL occupation identifier is a numerical value, the network device may determine a sum of the number of terminal devices using the target SL resource and a sum of the number of terminal device groups using the target SL resource. For example, the network device receives the target SL occupation identifier 4 times, the number of members corresponding to the target SL occupation identifier is 10, and the network device may determine that 4 sets of terminal devices use the target SL resource, and a total of 40 terminal devices use the target SL resource.

The method for the network device to determine that the target SL resource is used by the terminal device may refer to the foregoing description of the target SL occupation indication information, which is not described herein again for brevity.

The first terminal device feeds back the SL resources used by the first terminal device to the network device, so that the network device can be helped to comprehensively schedule the service conditions of the SL resources, can timely discover the bad conditions such as resource congestion and low resource utilization rate, can timely adjust the bad conditions, and is favorable for maintaining the network environment. The specific implementation manner of how the network device performs maintenance according to the feedback information SL resource from the first terminal device may be referred to step 407 and step 408.

And 407, the network device determines that the use of the target SL resource satisfies a preset condition.

Optionally, the determining, by the network device, that the usage of the target SL resource satisfies a preset condition includes: the network equipment determines that the number of terminal equipment groups using the target SL resource is greater than or equal to a first preset threshold value; and/or the network equipment determines that the number of terminal equipment using the target SL resource is greater than or equal to a second preset threshold.

Alternatively, each SL resource may have a time-of-use limit. The usage time herein may refer to a time period in which the SL resource may be used, for example, 2 hours, 4 hours, etc., or may be a time period in which the SL resource may be used, for example, 17 to 24 points, 8 to 18 points, etc. The network device determining that the usage of the target SL resource satisfies a preset condition may include: the network device determines that the usage time of the target SL exceeds a preset usage time.

For convenience of description, the present application takes "the number of terminal device groups using the target SL resource is greater than or equal to a first preset threshold" as a preset condition 1, takes "the number of terminal devices using the target SL resource is greater than or equal to a second preset threshold" as a preset condition 2, and takes "the time of using the target SL resource exceeds a preset use time" as a preset condition 3.

Alternatively, the preset condition may be at least one of preset conditions 1, 2, and 3. For example, the preset conditions may be any combination of preset conditions 1, 2, and 3. For another example, the preset condition may be one of preset conditions 1, 2, and 3.

408, the target cell stops broadcasting the target SL resource indicator and the target area validity information corresponding to the target SL resource indicator.

In other words, the target cell may change from broadcasting the N SL resource indicators and the N area availability information to broadcasting the N-1 SL resource indicators and the N-1 area availability information. The target SL resource is not included in the N-1 SL resource indication messages, and the target area effective message is not included in the N-1 area effective messages. For example, before the network device determines that the SL resource 1 meets the preset condition, the N SL resource indication information includes SL resource indication information 1 and SL resource indication information 2. After the network device determines that the SL resource 1 meets the preset condition, the target cell stops broadcasting the SL resource indication information 1 corresponding to the SL resource 1 and the corresponding area validity information, and the network device determines that the second information includes the SL resource indication information 2 and the corresponding area validity information.

Optionally, the network device may generate second information, where the second information includes M SL resource indication information and M area validity information, where each SL resource indication information in the M SL resource indication information is used to indicate a SL resource, the SL resources indicated by the M SL resource indication information are different from the SL resources indicated by the N SL resource indication information, the M area validity information is in one-to-one correspondence with the M SL resource indication information, each area validity information in the M area validity information is used to indicate an available area of the SL resource indicated by the corresponding SL resource indication information, and M is a positive integer greater than or equal to 1; the network device broadcasts the second information in the target cell.

Optionally, the SL resources indicated by the M SL resource indication information may be partially different from the SL resources indicated by the N SL resource indication information. In other words, some of the SL resources indicated by the M SL resource indication information are the same as some of the SL resources indicated by the N SL resource indication information. The network device may also determine a new SL resource and region validity information indicating an available range of the new SL resource. For example, before the network device determines that the SL resource 1 meets the preset condition, the N SL resource indication messages include SL resource indication message 1 and SL resource indication message 2, and corresponding area validity information. After the network device determines that the SL resource 1 meets the preset condition, the target cell stops broadcasting the SL resource indication information 1 corresponding to the SL resource 1 and the corresponding area validity information, and the network device determines that the second information includes SL resource indication information 2 and SL resource indication information 3 and the corresponding area validity information.

501, a first terminal device determines to reselect from a first cell to a second cell, where the first cell belongs to a first area, the second cell belongs to a second area, the second cell is one of network devices, and the second cell is a target cell.

Optionally, the first terminal device obtains the identifier of the first cell within the range of the first cell. After the first terminal device reselects the second cell, the first terminal device obtains the identifier of the second cell within the range of the second cell. The first terminal device may compare the identifier of the first cell with the identifier of the second cell, and determine that the first terminal device reselects from the first cell to the second cell when it is determined that the obtained cell identifier is different from the original cell identifier.

502, the second cell broadcasts area information and/or cell information, where the area information includes an identifier of an area where the network device is located or a second cell identifier list, the second cell identifier list includes identifiers of all cells located within an area range where the network device is located, the cell information is a cell identifier belonging to the second cell, and the area where the network device is located is the second area.

503, the first terminal device determines the service area of the first terminal device as the second area according to the area information or the cell information broadcasted by the second cell.

Optionally, the determining, by the first terminal device, the service area of the first terminal device as the second area according to the area information or the cell information broadcast by the second cell, where the area information includes the identifier of the second area, includes: and the first terminal equipment determines the service area of the first terminal equipment as the second area according to the identifier of the second area. In a case where the first terminal device holds the identifier of the first area, the first terminal device may determine that the first terminal device is changed from the first area to the second area.

In one example, a first terminal device reselects from a first cell to a second cell, the first cell belonging to a first area and the second cell belonging to a second area. The second terminal device is located within the range of the second cell. The second cell broadcasts the identifier of the second area, and the first terminal device may determine that the service area of the first terminal device is changed from the first area to the second area when the identifier of the first area is stored in the first terminal device. The second terminal device does not reselect from the first cell to the second cell, or does not store the identifier of the first area, and the second terminal device may determine that the service area of the second terminal device is the second area.

Optionally, the area information includes a second cell identifier list, where the second cell identifier list includes identifiers of all cells located in the second area range; the determining, by the first terminal device, the service area of the first terminal device as the second area according to the area information or the cell information broadcasted by the second cell, includes: and the first terminal equipment determines the service area of the first terminal equipment as the second area under the condition that the second cell identification list does not comprise the identification of the first cell. In other words, after the first terminal device reselects to the second cell, the first terminal device retains the identity of the first cell, the first terminal device matches the identity of the first cell with the second cell identity list, and in a case that it is determined that the identity of the first cell is not included in the second cell identity list, it is determined that the service area of the first terminal device is changed from the first area to the second area.

For example, the second cell identification list includes cell identifications cell 1 and cell 2, the first terminal device reserves an ID of the first cell as cell 3, the first terminal device may determine that the first cell does not exist in the second cell identification list, and the first terminal device may determine that a service area of the first terminal device is changed from the first area to the second area.

Optionally, the determining, by the first terminal device according to the area information or the cell information broadcast by the second cell, that the service area of the first terminal device is the second area includes: and the first terminal device determines the service area of the first terminal device as the second area under the condition that the first area cell identification list does not include the identification of the second cell, wherein the first area cell identification list includes the identifications of all cells located in the range of the first area. In other words, after the first terminal device reselects to the second cell, the first terminal device maintains the first cell identity list, and the first terminal device matches the identity of the second cell with the first cell identity list, and determines that the service area of the first terminal device is changed from the first area to the second area.

For example, the identifier of the second cell is cell 3, the first terminal device reserves a first cell identifier list, the first cell identifier list includes cell 1 and cell 2, the first terminal device may determine that the ID of the second cell does not exist in the first cell identifier list, and the first terminal device may determine that the service area of the first terminal device is changed from the first area to a new area.

And 504, the network device generates first information, where the first information includes N SL resource indication information and N area validity information, each of the N SL resource indication information is used to indicate a SL resource, the N area validity information is in one-to-one correspondence with the N SL resource indication information, each of the N area validity information is used to indicate an available area of the SL resource indicated by the corresponding SL resource indication information, the available area indicated by each of the area validity information includes at least two areas, the at least two areas include an area where the network device is located, and N is a positive integer greater than or equal to 1.

505, the second cell broadcasts the first information. Correspondingly, the first terminal device receives the first information broadcast by the second cell, and the first terminal device is one terminal device in the terminal device group.

506, the first terminal device determines a target SL resource according to the first information, where the target SL resource is an SL resource indicated by one of the N SL resource indication information.

The specific implementation manner of steps 504 to 506 can refer to steps 301 to 303 in the embodiment shown in fig. 4, and thus, detailed description is not necessary here.

507, the first terminal device determines target SL occupation indication information, where the target SL occupation indication information is used to indicate the target SL resource determined by the first terminal device;

508, the first terminal device sends the target SL occupation indication information to the network device. Correspondingly, the network equipment receives target SL occupation indication information sent by the first terminal equipment;

509, the network device determines that the target SL resource is used by the first terminal device.

The specific implementation manner of steps 507 to 509 may refer to steps 404 to 406 in the embodiment shown in fig. 5, and thus, details are not described herein.

In this embodiment of the present application, after the first terminal device moves from one area to another area, the first terminal device may trigger to acquire the indication information of the SL resources available in multiple areas, so as to facilitate interaction with other terminal devices still in the original area, and avoid invalid interaction.

601, the network device generates first information, where the first information includes N SL resource indication information and N area validity information, each of the N SL resource indication information is used to indicate a SL resource, the N area validity information is in one-to-one correspondence with the N SL resource indication information, each of the N area validity information is used to indicate an available area of the SL resource indicated by the corresponding SL resource indication information, the available area indicated by each of the area validity information includes at least two areas, the at least two areas include an area where the network device is located, and N is a positive integer greater than or equal to 1.

The network device broadcasts the first information at a target cell 602, which belongs to the network device. Correspondingly, the first terminal device receives the first information broadcast by the target cell, and the first terminal device is one terminal device in the terminal device group.

603, the first terminal device determines a target SL resource according to the first information, where the target SL resource is an SL resource indicated by one of the N SL resource indication information.

The specific implementation manner of steps 601 to 603 may refer to steps 301 to 303 in the embodiment shown in fig. 3, and thus, details are not needed here.

604, the first terminal device determines target SL release indication information, where the target SL release indication information is used to indicate the first terminal device to release the target SL resource.

Optionally, the target SL release indication information may include target SL resource indication information. In other words, the first terminal device receives the target SL resource indication information sent by the network device, and determines the target SL resource indication information as the target SL occupation indication information. Thus, the SL resource indicated by the target SL resource indication information can be indicated to the network device. For example, the first terminal device sends the target SL resource indication information to the network device, and then the network device may determine, according to the target SL resource indication information, that the SL resource indicated by the target SL resource indication information is released by the first terminal device.

Optionally, the target SL release indication information may include indication information that the indicated SL resource is only the target SL resource. In other words, the target SL release indication information does not indicate SL resources other than the target SL resource. Alternatively, the target SL release indication information may directly indicate the target SL resources. The target SL resource may be one or more of a time-frequency resource, a time-domain resource, a frequency-domain resource, a code-domain resource, a space-domain resource, and the like, and the target SL release indication information may include an available frequency range, a time-frequency position, and the like. The target SL release indication information may include time units. The time unit here may be a slot, a subframe, a mini-slot, etc. The embodiments of the present application do not limit this.

Optionally, the target SL release indication information may further include a SL index corresponding to the target SL resource. Different SL resources may correspond to different SL indexes. The network device and the first terminal device may store a correspondence between the SL resource and the SL index. Thus, the first terminal device may indicate the SL resource to the network device by sending the SL index.

Optionally, the first information further includes Z SL release indication information, where the Z SL release indication information has a corresponding relationship with the N SL resource indication information, each SL release indication information in the Z SL release indication information is used to indicate that a corresponding SL resource is used, and Z is a positive integer greater than or equal to 1; the first terminal equipment determines target SL release indication information, and the method comprises the following steps: the first terminal equipment determines the target SL release indication information from the Z SL release indication information. In other words, the first terminal device determines the target SL release indication information from Z SL release indication information, where at least one of the Z SL release indication information is used to indicate the target SL resource.

Optionally, the Z SL release indication information is N SL release indication information, and the N SL release indication information corresponds to the N SL resource indication information one to one. For example, the first information includes SL resource indication information 1, SL resource indication information 2, SL resource indication information 3, and SL release indication information 1, SL release indication information 2, and SL release indication information 3, where the SL resource indication information 1 corresponds to the SL release indication information 1, the SL resource indication information 2 corresponds to the SL release indication information 2, and the SL resource indication information 3 corresponds to the SL release indication information 3.

Optionally, the Z SL release indication information corresponds to Z SL resource indication information in the N SL resource indication information one to one. For example, the first information includes SL resource indication information 1, SL resource indication information 2, SL resource indication information 3, and SL release indication information 1, SL release indication information 2, where the SL resource indication information 1 corresponds to the SL release indication information 1, and the SL resource indication information 2 corresponds to the SL release indication information 2.

Optionally, one of the Z SL release indication information corresponds to at least one of the N SL resource indication information. For example, the first information includes SL resource indication information 1, SL resource indication information 2, SL resource indication information 3, and SL release indication information 1, SL release indication information 2, SL release indication information 3, and SL release indication information 4, where the SL resource indication information 1 corresponds to the SL release indication information 1, the SL resource indication information 2 corresponds to the SL release indication information 2, and the SL resource indication information 3 corresponds to the SL release indication information 3 and the SL release indication information 4.

The SL release indication information may include a dedicated random access preamble (preamble), or other information that may be used to indicate the SL resource used by the first terminal device, which is determined through network device configuration or negotiation between network devices.

Taking a preamble as an example, the Z pieces of SL release indication information may be preamble1, preamble2 … preamble I … preamble Z, where I is greater than or equal to 1 and less than or equal to Z, the Z preambles and the Z pieces of SL resource indication information have a corresponding relationship, the preamble I is one of the Z preambles, and the preamble I is used for indicating that the SL resource I is used. The first terminal equipment determines the preamble I from the Z preambles. In other words, the SL resource I indicated by the preamble I is the target SL resource. Thus, the first terminal device indicates the SL resource I to the network device by sending preamble I. Then, after receiving the preamble I, the network device may determine that the SL resource I is released by the first terminal device.

In one example, the Z SL release indication information is configured for the network device. For example, the network device configures each SL release indication information of the Z SL release indication information to correspond to one SL index, and one SL index to correspond to one SL resource. The network device stores the corresponding relationship between the SL resource and the SL index. Thus, the first terminal device may indicate the target SL resource to the network device by sending the SL index.

Optionally, the target SL release indication information may include a release stamp, where the release stamp is used to indicate that the SL resource indicated by the SL release indication information is released. Taking preamble I in the above as an example, the first terminal device sends the preamble I and the release stamp to the network device, and the network device may determine that the SL resource I is released by the first terminal device according to the preamble I and the release stamp.

Optionally, the target SL release indication information may also be used to indicate that the target SL resource is released by the terminal device group where the first terminal device is located. Similarly, the situation of indicating that the target SL resource is released by the first terminal device is similar, and therefore, the detailed description is not needed here.

Optionally, each of the Z SL release indicators includes at least one SL release identifier, and each of the at least one SL release identifier corresponds to one member number; the method further comprises the following steps: the first terminal device determines that all terminal devices of the terminal device group release the first terminal device to send target SL release instruction information to the network device, including: the first terminal equipment determines a target SL release identification from the target SL release indication information, and the number of members corresponding to the target SL release identification is matched with the number of members of a terminal equipment group where the first terminal equipment is located; the first terminal equipment sends the target SL release identification to the network equipment.

The matching of the SL release identifier and the number of members of the terminal device group referred to in this embodiment may mean that the number of members corresponding to the SL release identifier is the same as the number of members of the terminal device group, for example, the number of members of the terminal device group where the first terminal device is located is 10, and the number of members corresponding to one SL release identifier is 10, so that the number of members of the terminal device group is matched with the number of members corresponding to the SL release identifier.

The matching between the SL release identifier and the number of members of the terminal device group in the embodiment of the present application may also mean that the number of members of the terminal device group is within the range of the number of members corresponding to the SL release identifier. For example, if the number of members corresponding to one SL release identifier is 11 to 20 and one terminal device group includes 15 member devices, the number of members corresponding to the SL release identifier matches the number of members of the terminal device group.

Alternatively, each SL release identity of the at least one SL release identity may correspond to only one member number. In other words, the target SL release flag does not indicate other information than the number of members, such as target SL resources, etc. For example, there are a trans-regional SL resource 1 and a trans-regional SL resource 2, SL release indication information indicating the trans-regional SL resource 1 is SL release indication information 1, SL release indication information indicating the trans-regional SL resource 2 is SL release indication information 2, both the SL release indication information 1 and the SL release indication information 2 include a SL release identifier 1 and a SL release identifier 2, the number of members corresponding to the SL release identifier 1 may be 10, and the number of members corresponding to the SL release identifier 2 may be 20. Thus, for each SL release identity, only the corresponding number of members may be indicated.

Optionally, each SL release identifier of the at least one SL release identifier may further indicate the SL resource indicated by the SL release indication information, in addition to corresponding to one member number. In other words, the SL release identity may indicate a unique SL resource. For example, there are a trans-regional SL resource 1 and a trans-regional SL resource 2, SL release indication information indicating the trans-regional SL resource 1 is SL release indication information 1, SL release indication information indicating the trans-regional SL resource 2 is SL release indication information 2, the SL release indication information 1 includes a SL release identifier 1 and a SL release identifier 2, the SL release indication information 2 includes a SL release identifier 3 and a SL release identifier 4, and the SL release identifier 1, the SL release identifier 2, the SL release identifier 3, and the SL release identifier 4 are different from each other. The number of members indicated by the SL release mark 1 is 1-10, the number of members indicated by the SL release mark 2 is 11-20, the number of members indicated by the SL release mark 3 is 21-30, and the number of members indicated by the SL release mark 4 is 31-40. Therefore, for each SL release id, one SL resource may be uniquely determined, or one member number may be uniquely determined.

Taking preamble as an example, the at least one SL release identifier may be preamble1, preamble2 … preamble F … preamble L, where F is greater than or equal to 1 and is less than or equal to L, and L is an integer greater than or equal to 1; the preamble F is one of the L preambles, and corresponds to one member number. preamble F may represent a numerical value of the number of matched members, e.g., F; preamble F may also represent a range of member numbers that match, e.g., 10-20. The first terminal device determines the preamble F from the L preambles, and the member number indicated by the preamble F is matched with the member number of the terminal device group where the first terminal device is located. preamble1 to preamble L all indicate that SL resource 1 is released by the first terminal device. Then, after receiving the preamble F, the network device may determine that the SL resource 1 is released by a terminal device group, and the terminal device group includes 10 to 20 terminal devices.

Optionally, the first terminal device determines that the service area of each terminal device of the terminal device group is the area where the first terminal device is located, or the first terminal device determines that each terminal device of the terminal device group releases the target SL resource. In other words, after the first terminal device determines that all terminal devices of the terminal device group can release the target SL resource for group communication, the first terminal device sends the SL release identifier to the network device, where the SL release identifier is used to indicate the number of members of the terminal device group that release the target SL resource.

Optionally, the first terminal device may determine that all terminal devices in the terminal device group release the target SL resource by receiving feedback of other terminal devices in the terminal device group except the first terminal device. For example, there are 3 terminal devices in the terminal device group, where terminal device 1 receives feedback information sent by terminal device 2 and terminal device 3, and terminal device 1 may determine that all terminal devices in the terminal device group release the target SL resource according to the number of times of receiving the feedback information being 2.

Optionally, the first terminal device may determine that the service areas of all the terminal devices in the terminal device group are the area where the first terminal device is located by receiving the feedback of other terminal devices in the terminal device group except the first terminal device, so as to determine that all the terminal devices in the terminal device group release the target SL resource.

Optionally, each of the Z SL release indicators includes at least one SL release identifier, and each of the at least one SL release identifier corresponds to one member number; the method further comprises the following steps: the first terminal device determines that all terminal devices of the terminal device group release the first terminal device to send target SL release instruction information to the network device, including: the first terminal equipment determines a target SL release identifier from the target SL release indication information, wherein the target SL release identifier is used for indicating the number of members releasing the target SL resources in the terminal equipment group; the first terminal equipment sends the target SL release identification to the network equipment. In other words, the terminal device may count the number of terminal devices in the terminal device group that release the target SL resource, and indicate the number of terminal devices in the terminal device group that release the target SL resource to the network device through the target SL release identifier. That is, the terminal device may notify the network device that part of the terminal devices in the terminal device group release the target SL resource.

The manner in which the other terminal device in the terminal device group determines that the service area of the other terminal device is the area where the first terminal device is located may refer to steps 501 to 503 in the embodiment shown in fig. 5, which is not described herein again.

Optionally, after determining that the service areas of all the terminal devices in the terminal device group are the areas where the first terminal device is located, the first terminal device may obtain a target area SL resource broadcasted by a cell for SL communication with the terminal device group, where the cell is a cell reselected by the first terminal device.

Optionally, the first terminal device may obtain the SL resource indication information of the target area, where the SL resource indication information of the target area is used to indicate SL resources of the target area, and send the SL resource indication information of the target area to other terminal devices of the terminal device group.

605, the first terminal device sends the target SL release indication information to the network device. Accordingly, the network device receives the target SL release indication information determined by the first terminal device.

606, the network device determines that the target SL resource is released by the first terminal device.

Optionally, the network device may determine, according to the target SL release indication information, a total of the number of terminal devices that release the target SL resource. In other words, in the case that each terminal device releasing the target SL resource sends the target SL release indication information to the network device, the network device may count the number of times the target SL release indication information is received, and determine the total number of terminal devices releasing the target SL resource. For example, the network device receives the target SL release indication information 4 times, and the network device may determine that there are 4 terminal devices releasing the target SL resources.

Optionally, the network device may determine that the target SL resource is released by the terminal device group in which the first terminal device is located.

Optionally, the network device may determine, according to the target SL release indication information, a total number of terminal device groups that release the target SL resource. In other words, when only one terminal device in each terminal device group releasing the target SL resource sends the target SL release indication information to the network device, and each terminal device releasing the target SL resource releases the target SL resource, the network device may count the number of times the target SL release indication information is received, and determine the total number of terminal device groups releasing the target SL resource. For example, the network device receives the target SL release indication information 4 times, and the network device may determine that there are 4 terminal device groups to release the target SL resource.

Optionally, the network device may determine, according to the target SL release identifier, a sum of the number of terminal devices that release the target SL resource and a sum of the number of terminal device groups that release the target SL resource.

In one example, in a case where the target SL release identifier uniquely identifies the target SL resource but the number of members corresponding to the target SL release identifier is a numerical range, the network device may determine the sum of the number of terminal device groups releasing the target SL resource. For example, the network device receives SL release identifier 1 for 4 times, the number of members corresponding to SL release identifier 1 is 10 to 25, the SL resource corresponding to SL release identifier 1 only has SL resource 1, the network device may determine that there are 4 groups of terminal devices releasing SL resource 1, and there are 40 to 100 total terminal devices releasing the target SL resource.

In one example, in a case that the target SL release identifier does not uniquely identify the target SL resource, but the number of members corresponding to the target SL release identifier is a numerical value, the network device may determine the sum of the number of terminal devices releasing the SL resource. For example, the network device receives the target SL release identifier 4 times, the number of members corresponding to the target SL release identifier is 10, the network device may determine that a total of 4 terminal device groups release SL resources indicated by the N SL resource indication information broadcasted by the target cell, and the total number of terminal devices is 40, and the network device may determine, according to the SL release indication information sent by the 4 terminal device groups, the SL resources released by the 4 terminal device groups and the number of terminal device members releasing each SL resource.

In one example, in a case that the target SL release identifier uniquely identifies the target SL resource and the number of members corresponding to the target SL release identifier is a numerical value, the network device may determine a sum of the number of terminal devices releasing the target SL resource and a sum of the number of terminal device groups releasing the target SL resource. For example, the network device receives the target SL release identifier 4 times, the number of members corresponding to the target SL release identifier is 10, the network device may determine that there are 4 terminal device groups to release the target SL resource, and there are 40 terminal devices to release the target SL resource.

The method for the network device to determine that the target SL resource is released by the terminal device may refer to the foregoing description of the target SL release indication information, which is not described herein again for brevity.

The first terminal device feeds back the SL resource used by the first terminal device to the network device, and feeds back the SL resource to the network device when releasing the SL resource, and the network device can confirm the use condition of the SL resource in real time. The first terminal device and the method for feeding back the SL resource used by the first terminal device to the network device may refer to steps 607 to 609.

607, the first terminal device determines target SL occupation indication information, where the target SL occupation indication information is used to indicate the target SL resource determined by the first terminal device.

608, the first terminal device sends the target SL occupation indication information to the network device. Correspondingly, the network device receives the target SL occupation indication information sent by the first terminal device.

609, the network device determines that the target SL resource is used by the first terminal device.

The specific implementation of steps 607 to 609 can refer to steps 404 to 406 in the embodiment shown in fig. 4, and thus, detailed description is not necessary here.

The following takes the V2V scenario as an example, and further describes the technical solution of the present application. It is understood that these specific examples are only for helping those skilled in the art to better understand the technical solutions of the present application, and are not intended to limit the technical solutions of the present application.

Suppose that the systems collectively include: the terminal device group comprises a terminal device group 1, a network device 1 and a network device 2, wherein the terminal device group 1 comprises a vehicle 1, a vehicle 2 and a vehicle 3, the network device 1 is located in a first area, the network device 2 is located in a second area, the first area is a first area within the range of the first area, and the second area is a second area within the range of the second area. Since the description is given by taking V2V as an example, the terminal device may be a vehicle, or a vehicle-mounted communication apparatus. The following description will be made by taking a vehicle as an example. In this case, the terminal device group 1 may become a vehicle fleet 1, the terminal device 1 may be referred to as a vehicle 1, the terminal device 2 may be referred to as a vehicle 2, and the terminal device 3 may be referred to as a vehicle 3.

In the first case, the vehicles 1 in the fleet 1 may acquire the SL resources across the area before moving from the first area to the second area.

Assuming that a vehicle 1 in the platoon 1 is the first vehicle in the platoon 1 to move from a first area to a second area, the vehicle 1 may determine that the area in which it is to move is the second area before moving to the second area. The vehicle 1 may set a driving route in advance. The vehicle may determine to move from zone 1 to zone 2 according to a preset driving route.

The vehicle 1 may obtain the first information 1 broadcast by the cell 1, which cell 1 belongs to the network device 1. The first information 1 includes 3 SL resource indication information and 3 area validity information, where the SL resource indication information 1 is used to indicate the SL resource 1, the SL resource 1 is valid in the first area and the second area, the area validity information 1 includes a second cell identifier list, and the indicated available area is the first area and the second area; the SL resource indication information 2 is used for indicating the SL resource 2, the SL resource 2 is valid in the first area and the third area, the area validity information 2 includes the ID of the first area and the ID of the third area, and the indicated available areas are the first area and the third area; the SL resource indication information 3 is used to indicate the SL resource 3, the SL resource 3 is valid in the first area, the second area, and the third area, the area validity information 3 includes the ID of the second area and the ID of the third area, and the indicated available areas are the first area, the second area, and the third area.

The vehicle 1 may determine that the SL resource 1 or the SL resource 3 is the target SL resource based on the first information 1 and the fact that the vehicle 1 has determined that it is going to move from the first area to the second area.

The target SL resource is taken as SL resource 1 as an example and explained below.

Alternatively, the vehicle 1 may determine that the target SL resource indication information indicating the target SL resource is SL resource indication information 1. The vehicle 1 may send the SL resource indication 1 to a vehicle 2, for example, the vehicle 2 may be the closest vehicle to the vehicle 1 in the platoon 1. After the vehicle 2 acquires the SL resource indication information 1, the vehicle 2 can use the SL resource 1 indicated by the SL resource indication information 1. Optionally, the vehicle 1 or the vehicle 2 may also send the SL resource indication information 1 to more vehicles in the fleet 1, so that more vehicles may use the SL resource 1.

Alternatively, the vehicle 1 determines the target SL occupancy indication information. Specific contents of the SL occupancy indication information and a specific implementation manner of how the vehicle 1 determines the SL occupancy indication information can be referred to the above embodiments, and need not be described herein again.

The vehicle 1 has not yet reselected from the first cell to the second cell, and the vehicle 1 may pre-empt the SL resource 1 before moving to the second area. At this time, the vehicle 1 may transmit the target SL occupancy indication information to the network device 1.

The network device 1 may determine that the SL resource 1 is used by the fleet 1 after receiving the target SL occupancy indication information.

Optionally, the first information 1 further includes 3 SL occupation indication information, that is, SL occupation indication information 1, SL occupation indication information 2, and SL occupation indication information 3, where the SL occupation indication information 1 corresponds to the SL resource indication information 1. The vehicle 1 may determine that the target SL occupancy indication information is the SL occupancy indication information 1. The network device 1 may determine that the SL resource 1 is used by the fleet 1 after receiving the SL occupancy indication information 1. The 3 SL occupancy indication information may be preamble11, preamble12, preamble13, respectively.

The vehicle group 2 includes vehicles 4 and 5. The vehicle 4 transmits SL occupancy indication information 1 to the network device 1. The network device 1 may determine that the number of the fleet using the SL resource 1 is 2 according to the SL occupancy indication information 1 sent by the vehicle 1 and the vehicle 2.

Optionally, the vehicle 1 determines that the number of members in the fleet 1 is 15. The SL occupation indication information 1 comprises 3 SL occupation identifications, the number of the members corresponding to the SL occupation identification 1 is 11-20, the number of the members corresponding to the SL occupation identification 2 is 21-30, and the number of the members corresponding to the SL occupation identification 3 is 31-40. The vehicle 1 determines the SL occupancy identifier 1 as a target SL occupancy identifier from the 3 SL occupancy identifiers; the vehicle 1 sends the target SL occupancy identity, i.e. sends the SL occupancy identity 1, to the network device 1. The network device 1 receives the target SL occupation identifier, namely SL occupation identifier 1, sent by the vehicle 1, and determines that the number of members of the fleet 1 is 11-20. The 3 SL occupancy identities may be preamble11, preamble12, preamble13, respectively.

Optionally, the SL occupation indication information 2 corresponds to the SL resource indication information 2 to indicate the SL resource 2, where the SL occupation indication information 2 includes 3 SL occupation identifiers, the number of members corresponding to the SL occupation identifier 4 is 11, the number of members corresponding to the SL occupation identifier 5 is 12, and the number of members corresponding to the SL occupation identifier 6 is 13 to 20. The SL occupation indication information 3 corresponds to the SL resource indication information 3 and indicates the SL resource 3, the SL occupation indication information 3 includes 2 SL occupation identifiers, the number of members corresponding to the SL occupation identifier 7 is 20, and the number of members corresponding to the SL occupation identifier 8 is 21-30. For example, if the network device 1 receives the SL occupancy identifier 7 sent by the vehicle 2, the network device 1 may determine that the number of members in the fleet 1 is 11, and the SL resource used by the fleet 1 is the SL resource 3. As another example, when the network device 1 receives the SL occupancy identifiers 7 sent by the vehicle 4 and the vehicle 1, the network device 1 may determine that the number of fleets using the SL resource 3 is 2 and the number of members of vehicles using the SL resource 3 is 40.

Alternatively, the network device 1 may determine whether the use of the SL resource 1 satisfies a preset condition. In case that a preset condition is satisfied, the cell 1 stops broadcasting the SL resource indicator 1 and the area availability information 1.

Optionally, the preset condition may include at least one of the following preset conditions:

presetting a condition 1, wherein the number of fleets using SL resources 1 is greater than or equal to a first preset threshold;

a preset condition 2 where the number of vehicles using the SL resource 1 is greater than or equal to a second preset threshold;

the preset condition 3 is that the time for using the SL resource 1 exceeds a preset use time.

For the preset condition 1, the network device 1 may count the number of all fleets using the SL resource 1, for example, count the number of times the SL occupancy indication information 1 is received. When the network device 1 determines that the number of the fleet using the SL resource 1 exceeds a first preset threshold, the cell 1 stops broadcasting the SL resource indication information 1 and the area validity information 1.

For the preset condition 2, the network device 1 may count the number of all vehicles using the SL resource 1, for example, count the number of times the SL occupancy identifier 1, the SL occupancy identifier 2, and the SL occupancy identifier 3 are received, and determine the number of all vehicles using the SL resource 1. The number of all vehicles may be a specific number, or may be a range of numbers. When the number of all vehicles is a numerical value, the network device 1 determines that the number of the fleet using the SL resource 1 exceeds a first preset threshold, and the cell 1 stops broadcasting the SL resource indication information 1 and the area validity information 1. When the number of all vehicles is a numerical value, the network device 1 determines that the maximum value or the minimum value or the middle value of the numerical range of the fleet using the SL resource 1 exceeds a first preset threshold value, and the cell 1 stops broadcasting the SL resource indication information 1 and the area validity information 1.

For the preset condition 3, the network device 1 may count a time difference from a time when the cell 1 broadcasts the SL resource indication information 1 for the first time or a time when the SL occupancy indication information 1 sent by the vehicle is received for the first time to a current time. When the time difference is greater than the preset using time, the cell 1 stops broadcasting the SL resource indicator 1 and the area validity information 1.

Optionally, the network device 1 generates second information 1, where the second information 1 includes 3 SL resource indication information and 3 area validity information, where an SL resource 2 corresponding to the SL resource indication information 2 is valid in the first area and the third area, the area validity information 2 includes an ID of the first area and an ID of the third area, and the indicated available area is the first area and the third area; the SL resource 3 corresponding to the SL resource indication information 3 is valid in the first area, the second area and the third area, the area valid information 3 includes the ID of the second area and the ID of the third area, and the indicated available areas are the first area, the second area and the third area; the SL resource 4 corresponding to the SL resource indication information 4 is valid in the first area and the second area, the area valid information 4 includes the second cell identifier list, and the indicated available area is the first area and the second area. That is, the cell 1 broadcasts new SL resource indication information 4 and new area availability information 4 instead of the original SL resource indication information 1 and area availability information 1.

Accordingly, the network device 2 generates the second information 2, and the SL resource indication information 1 and the area validity information 1 are no longer included in the second information 2. That is, the cell 2 belonging to the network device 2 stops broadcasting the SL resource indication information 1 and the area availability information 1 having a correspondence relationship with the SL resource 1.

As the vehicle 1 moves, the vehicle 1 reselects from the first cell to the second cell. After the vehicle 1 reselects the second cell, the vehicle may determine that the service area in which the vehicle is located is changed from the first area to the second area. The vehicle 1 may also transmit the target occupancy indication information to the network device 2 at this time.

Optionally, the network device 2 may also determine whether the use of the SL resource 1 satisfies a preset condition. In case that a preset condition is satisfied, the cell 2 stops broadcasting the SL resource indicator 1 and the area availability information 1. How the network device 2 determines whether the SL resource 1 satisfies the preset condition is the same as the specific implementation manner of how the network device 1 determines whether the SL resource 1 satisfies the preset condition, and the specific implementation manner of how the network device 2 maintains the SL resource after determining that the preset condition is satisfied is the same as the specific implementation manner of how the network device 1 maintains the SL resource after determining that the preset condition is satisfied, which is not described herein again.

In the second case, the SL resource across the area is acquired in the case where the vehicle 1 in the vehicle fleet 1 has moved from the first area to the second area.

Specifically, the vehicle 1 determines to reselect from a first cell to a second cell, and determines to change the service area of the vehicle from the first area to the second area according to the area information and/or cell information broadcast by the cell 2, and the cell 2 belongs to the network device 2.

The vehicle 1 may acquire the first information 2 broadcast by the cell 2. The first information 2 includes 3 SL resource indication information and 3 area validity information, where the SL resource 1 corresponding to the SL resource indication information 1 is valid in the first area and the second area, the area validity information 1 includes a first cell identifier list, and the indicated available area is the first area and the second area; the SL resource 2 corresponding to the SL resource indication information 2 is valid in the second area and the third area, the area valid information 2 includes the ID of the second area and the ID of the third area, and the indicated available area is the second area and the third area; the SL resource 3 corresponding to the SL resource indication information 3 is valid in the first area, the second area, and the third area, the area validity information 3 includes the ID of the second area and the ID of the third area, and the indicated available areas are the first area, the second area, and the third area.

The vehicle 1 may determine that the SL resource 1 or the SL resource 3 is the target SL resource based on the first information 2 and the movement of the vehicle 1 from the first area to the second area that the vehicle 1 has determined.

The vehicle 1 may transmit the target SL occupancy indication information to the network device 2. The network device 2 may determine that the SL resource 1 is used by the fleet 1 after receiving the target SL occupancy indication information.

Further, the platoon 2 comprises vehicles 4, 5. The vehicle 4 transmits SL occupancy indication information 1 to the network device 2. The network device 2 may determine that the number of the fleet using the SL resource 1 is 2 according to the SL occupancy indication information 1 sent by the vehicle 1 and the vehicle 2.

Optionally, the vehicle 1 determines that the number of members in the fleet 1 is 15. The SL occupation indication information 1 comprises 3 SL occupation identifications, the number of the members corresponding to the SL occupation identification 1 is 11-20, the number of the members corresponding to the SL occupation identification 2 is 21-30, and the number of the members corresponding to the SL occupation identification 3 is 31-40. The vehicle 1 determines the SL occupancy identifier 1 as a target SL occupancy identifier from the 3 SL occupancy identifiers; the vehicle 1 sends the target SL occupancy identity, i.e. sends the SL occupancy identity 1, to the network device 2. The network device 2 receives the target SL occupation identifier, namely the SL occupation identifier 1, sent by the vehicle 1, and determines that the number of members of the fleet 1 is 11-20. The 3 SL occupancy identities may be preamble21, preamble22, preamble23, respectively.

Optionally, the SL occupation indication information 2 corresponds to the SL resource indication information 2 to indicate the SL resource 2, where the SL occupation indication information 2 includes 3 SL occupation identifiers, the number of members corresponding to the SL occupation identifier 4 is 11, the number of members corresponding to the SL occupation identifier 5 is 12, and the number of members corresponding to the SL occupation identifier 6 is 13 to 20. The SL occupation indication information 3 corresponds to the SL resource indication information 3 and indicates the SL resource 3, the SL occupation indication information 3 includes 2 SL occupation identifiers, the number of members corresponding to the SL occupation identifier 7 is 20, and the number of members corresponding to the SL occupation identifier 8 is 21-30. For example, if the network device 2 receives the SL occupancy identifier 7 sent by the vehicle 2, the network device 2 may determine that the number of members in the fleet 1 is 11, and the SL resource used by the fleet 1 is the SL resource 3. As another example, the network device 2 receives the SL occupancy identifiers 7 sent by the vehicle 4 and the vehicle 1, and the network device may determine that the number of fleets using the SL resource 3 is 2 and the number of members of vehicles using the SL resource 3 is 22.

Optionally, the vehicle 1 may determine the target SL release instruction information and send the target SL release instruction information to the network device 2 when the target SL resource is released or is about to be released. Specific contents of the SL release indication information and a specific implementation manner of how the vehicle 1 determines the SL release indication information can be referred to the above embodiments, and need not be described herein again.

The vehicle 1 may transmit the target SL release instruction information to the network device 2. The network device 2 may determine that the SL resource 1 is released by the vehicle 1 after receiving the target SL release instruction information.

Optionally, after receiving the target SL release instruction information, the network device 2 may determine that the SL resource 1 is released by the vehicle 1. In this case, the vehicle 1 needs to confirm that all members of the fleet 1 release the SL resource 1. For a specific implementation manner of confirming that all members in the fleet release the SL resource, reference may be made to the above embodiments, and details are not needed here.

Optionally, the first information 1 further includes 3 SL release indication information, that is, SL release indication information 1, SL release indication information 2, and SL release indication information 3, where SL release indication information 1 corresponds to SL resource indication information 1. The vehicle 1 may determine that the target SL release instruction information is the SL release instruction information 1. The network device 1 may determine that the SL resource 1 is released by the vehicle 1 or that the SL resource is released by the fleet 1 after receiving the SL release instruction information 1. The 3 SL release indication information may be preamble31, preamble32, preamble33, respectively.

Further, the platoon 2 comprises vehicles 4, 5. The vehicle 4 transmits SL release instruction information 1 to the network device 2. The network device 2 may determine the number of vehicles releasing the SL resource 1 to be 2 or may determine the number of fleets releasing the SL resource 1 to be 2 according to the SL release indication information 1 sent by the vehicle 1 and the vehicle 2.

Optionally, the vehicle 1 determines that the number of members in the fleet 1 is 15. The SL release indication information 1 comprises 3 SL release identifications, the number of the members corresponding to the SL release identification 1 is 11-20, the number of the members corresponding to the SL release identification 2 is 21-30, and the number of the members corresponding to the SL release identification 3 is 31-40. The vehicle 1 determines the SL release identifier 1 as a target SL release identifier from the 3 SL release identifiers; the vehicle 1 sends the target SL release flag, i.e., sends the SL release flag 1, to the network device 2. The network device 2 receives the target SL release identifier, namely the SL release identifier 1, sent by the vehicle 1, determines that the number of members of the fleet 1 is 11-20, and confirms that the fleet 1 releases the target SL resource 1. The 3 SL release flags may be preamble41, preamble42, preamble43, respectively.

Optionally, the SL release indication information 2 corresponds to the SL resource indication information 2 and indicates the SL resource 2, where the SL release indication information 2 includes 3 SL release identifiers, the number of members corresponding to the SL release identifier 4 is 11, the number of members corresponding to the SL release identifier 5 is 12, and the number of members corresponding to the SL release identifier 6 is 13 to 20. The SL release indication information 3 corresponds to the SL resource indication information 3 and indicates the SL resource 3, the SL release indication information 3 includes 2 SL release identifiers, the number of members corresponding to the SL release identifier 7 is 20, and the number of members corresponding to the SL release identifier 8 is 21-30. For example, if the network device 2 receives the SL release identifier 7 sent by the vehicle 2, the network device 2 may determine that the number of members in the fleet 1 is 20, and the SL resource released by the fleet 1 is the SL resource 3. As another example, when the network device 2 receives the SL release identifiers 7 sent by the vehicle 4 and the vehicle 1, the network device may determine that the number of the fleet releasing the SL resource 3 is 2 and the number of the vehicle members releasing the SL resource 3 is 40.

Optionally, if the network device 2 receives the SL release identifier 7 sent by the vehicle 4, it may be determined that 20 vehicles in the platoon 2 release the SL resource 3, and the 20 vehicles may be part of the vehicles in the platoon 2.

Alternatively, the network device 2 may send an indication message to the network device 1 indicating that the SL resource 1 is released by the vehicle 1 or the platoon 1. The specific implementation of the indication can be referred to the above embodiments, and need not be described herein.

Alternatively, the network device 2 may determine whether the use of the SL resource 1 satisfies a preset condition. In case that a preset condition is satisfied, the cell 2 stops broadcasting the SL resource indicator 1 and the area availability information 1.

For the preset condition 1, the network device 2 may count the number of all fleets using the SL resource 1, for example, count the number of times the SL occupancy indication information 1 is received. When the network device 2 determines that the number of the fleet using the SL resource 1 exceeds a first preset threshold, the cell 2 stops broadcasting the SL resource indication information 1 and the area validity information 1.

For the preset condition 2, the network device 2 may count the number of all vehicles using the SL resource 1, for example, count the number of times the SL occupancy identifier 1, the SL occupancy identifier 2, and the SL occupancy identifier 3 are received, and determine the number of all vehicles using the SL resource 1. The number of all vehicles may be a specific number, or may be a range of numbers. When the number of all vehicles is a numerical value, the network device 2 determines that the number of the fleet using the SL resource 1 exceeds a first preset threshold, and the cell 2 stops broadcasting the SL resource indication information 1 and the area validity information 1. When the number of all vehicles is a numerical value, the network device 2 determines that the maximum value or the minimum value or the middle value of the numerical range of the fleet using the SL resource 1 exceeds a first preset threshold value, and the cell 2 stops broadcasting the SL resource indication information 1 and the area validity information 1.

For the preset condition 3, the network device 2 may count a time difference from a time when the cell 2 first broadcasts the SL resource indication information 1 or a time when the SL occupancy indication information 1 sent by the vehicle is first received to a current time. When the time difference is greater than the preset using time, the cell 2 stops broadcasting the SL resource indicator 1 and the area availability information 1.

Optionally, the network device 2 generates second information 2, where the second information 2 includes 3 SL resource indication information and 3 area validity information, where the SL resource 2 corresponding to the SL resource indication information 2 is valid in the first area and the third area, the area validity information 2 includes an ID of the first area and an ID of the third area, and the indicated available area is the first area and the third area; the SL resource 3 corresponding to the SL resource indication information 3 is valid in the first area, the second area and the third area, the area valid information 3 includes the ID of the second area and the ID of the third area, and the indicated available areas are the first area, the second area and the third area; the SL resource 4 corresponding to the SL resource indication information 4 is valid in the first area and the second area, the area valid information 4 includes the second cell identifier list, and the indicated available area is the first area and the second area. That is, the cell 2 broadcasts new SL resource indication information 4 and new area availability information 4 instead of the original SL resource indication information 1 and area availability information 1.

Accordingly, the network device 1 generates the second information 1, and the SL resource indication information 1 and the area validity information 1 are no longer included in the second information 1. That is, the cell 1 stops broadcasting the SL resource indication information 1 and the area available information 1 associated with the SL resource 1.

Method embodiments of the present application are described above in detail with reference to fig. 3 to 6, and apparatus embodiments of the present application are described in detail with reference to fig. 7 to 10. It is to be understood that the description of the method embodiments corresponds to the description of the apparatus embodiments, and therefore reference may be made to the preceding method embodiments for parts not described in detail.

Fig. 7 is a schematic structural diagram of a communication device provided in an embodiment of the present application. The communication device may be a terminal device, or may be a component (e.g., a chip or a circuit) that can be used in a terminal device. As shown in fig. 7, the communication apparatus 700 may include a receiving module 701 and a processing module 702.

A receiving module 701 for a first terminal device to receive first information broadcasted by a target cell, the target cell belongs to a network device, the first information comprises N SL resource indication information and N area effective information, wherein each of the N SL resource indication information is used for indicating SL resources, the N pieces of region effective information correspond to the N pieces of SL resource indication information one by one, each of the N pieces of region effective information is used for indicating an available region of SL resources indicated by the corresponding SL resource indication information, the available area indicated by each area valid information includes at least two areas, the at least two areas include an area where the network device is located, N is a positive integer greater than or equal to 1, and the first terminal device is one terminal device in a terminal device group.

The processing module 702 is configured to determine a target SL resource according to the first information, where the target SL resource is an SL resource indicated by one of the N SL resource indication information.

The receiving module 701 may be implemented by a receiver. The processing module 702 may be implemented by a processor. Specific functions and advantageous effects of the receiving module 701 and the processing module 702 can refer to the methods shown in fig. 3 to fig. 6, and are not described herein again.

In a possible embodiment, a communication device is also provided, which may be a terminal device or a component (e.g., a chip or a circuit) that can be used for a terminal device. The communication device may include a processor and a transceiver, and optionally, may also include a memory. Wherein the processor may be configured to implement the corresponding functions and operations of the processing module described above. The memory can be used for storing execution instructions or application program codes, and is controlled by the processor to execute, so as to implement the communication method provided by the above embodiment of the application; and/or may be used to temporarily store some data and instruction information, etc. The memory may exist independently of the processor, in which case the memory may be coupled to the processor via a communication line. In yet another possible design, the memory may be integrated with the processor, and the embodiment of the present application is not limited thereto.

Fig. 8 is a schematic structural diagram of a network device according to an embodiment of the present application. The communication device may be a network device or may be a component (e.g., a chip or a circuit) that may be used in a network device. As shown in fig. 8, the communication apparatus 800 may include a processing module 801 and a transmitting module 802.

A processing module 801, configured to generate first information, where the first information includes N SL resource indication information and N area validity information, each of the N SL resource indication information is used to indicate a SL resource, the N area validity information is in one-to-one correspondence with the N SL resource indication information, each of the N area validity information is used to indicate an available area of the SL resource indicated by the corresponding SL resource indication information, the available area indicated by each of the area validity information includes at least two areas, the at least two areas include an area where the network device is located, and N is a positive integer greater than or equal to 1.

A sending module 802, configured to broadcast the first information.

The processing module 801 may be implemented by a processor. The transmitting module 802 may be implemented by a transmitter. Specific functions and advantageous effects of the sending module 801 and the processing module 802 can refer to the methods shown in fig. 3 to fig. 6, and are not described herein again.

In one possible embodiment, a communication device is also provided, which may be a network device or a component (e.g., a chip or a circuit) that can be used in a network device. The communication device may include a transceiver and a processor, and optionally, a memory. The transceiver may be configured to implement corresponding functions and operations corresponding to the receiving module and the sending module, and the processor may be configured to implement corresponding functions and operations of the processing module. The memory can be used for storing execution instructions or application program codes, and is controlled by the processor to execute, so as to implement the communication method provided by the above embodiment of the application; and/or may be used to temporarily store some data and instruction information, etc. The memory may exist independently of the processor, in which case the memory may be coupled to the processor via a communication line. In yet another possible design, the memory may be integrated with the processor, and the embodiment of the present application is not limited thereto.

Fig. 9 is a block diagram of a terminal device according to an embodiment of the present invention. As shown in fig. 9, the terminal apparatus 900 includes a processor 901, a memory 902, a radio frequency circuit, an antenna, and an input-output device. The processor 901 may be used to process communication protocols and communication data, and to control the terminal device, execute software programs, process data of the software programs, and the like. The memory 902 is used primarily for storing software programs and data. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user. It should be noted that some kinds of terminal devices may not have input/output devices.

When data needs to be transmitted, the processor 901 outputs a baseband signal to the radio frequency circuit after performing baseband processing on the data to be transmitted, and the radio frequency circuit performs radio frequency processing on the baseband signal and then transmits the radio frequency signal to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data. For ease of illustration, only one memory and processor are shown in FIG. 9. In an actual end device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be provided independently of the processor, or may be integrated with the processor, which is not limited in this embodiment.

In the embodiment of the present application, the antenna and the radio frequency circuit having the transceiving function may be regarded as the transceiver 903 of the terminal device, and the processor having the processing function may be regarded as the processing unit of the terminal device. A transceiver may also be referred to as a transceiver unit, transceiver, transceiving means, etc. A processing unit may also be referred to as a processor, a processing board, a processing module, a processing device, or the like. Alternatively, a device in the transceiver 903 for implementing a receiving function may be regarded as a receiving unit, and a device in the transceiver 903 for implementing a transmitting function may be regarded as a transmitting unit, that is, the transceiver 903 includes a receiving unit and a transmitting unit. A receiving unit may also be referred to as a receiver, a receiving circuit, or the like. A transmitting unit may also sometimes be referred to as a transmitter, or a transmitting circuit, etc.

The processor 901, the memory 902 and the transceiver 903 communicate with each other via internal connection paths to transfer control and/or data signals

The method disclosed in the above embodiments of the present invention may be applied to the processor 901, or implemented by the processor 901. The processor 901 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 901.

The processor described in the embodiments of the present application may be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may be located in a Random Access Memory (RAM), a flash memory, a read-only memory (ROM), a programmable ROM, an electrically erasable programmable memory, a register, or other storage media that are well known in the art. The storage medium is located in a memory, and a processor reads instructions in the memory and combines hardware thereof to complete the steps of the method.

Optionally, in some embodiments, the memory 902 may store instructions for performing the method performed by the terminal device in the method illustrated in fig. 3. The processor 901 may execute the instructions stored in the memory 902 to complete the steps performed by the terminal device in the method shown in fig. 3 in combination with other hardware (e.g. the transceiver 903), and specific working procedures and beneficial effects may refer to the description in the embodiment shown in fig. 3.

Optionally, in some embodiments, the memory 902 may store instructions for performing the method performed by the terminal device in the method illustrated in fig. 4. The processor 901 may execute the instructions stored in the memory 902 to complete the steps performed by the terminal device in the method shown in fig. 4 in combination with other hardware (e.g. the transceiver 903), and specific working procedures and beneficial effects may refer to the description in the embodiment shown in fig. 4.

Optionally, in some embodiments, the memory 902 may store instructions for performing a method performed by the terminal device, such as the method illustrated in fig. 5. The processor 901 may execute the instructions stored in the memory 902 to complete the steps performed by the terminal device in the method shown in fig. 5 in combination with other hardware (e.g. the transceiver 903), and specific working procedures and beneficial effects may refer to the description in the embodiment shown in fig. 5.

Optionally, in some embodiments, the memory 902 may store instructions for performing the method performed by the terminal device in the method illustrated in fig. 6. The processor 901 may execute the instructions stored in the memory 902 to complete the steps performed by the terminal device in the method shown in fig. 6 in combination with other hardware (e.g. the transceiver 903), and specific working procedures and beneficial effects may refer to the description in the embodiment shown in fig. 6.

The embodiment of the application also provides a chip, which comprises a transceiver unit and a processing unit. The transceiver unit can be an input/output circuit and a communication interface; the processing unit is a processor or a microprocessor or an integrated circuit integrated on the chip. The chip can execute the method of the terminal device in the method embodiment.

The embodiment of the present application further provides a computer-readable storage medium, on which instructions are stored, and when executed, the instructions perform the method of the terminal device in the above method embodiment.

Embodiments of the present application further provide a computer program product containing instructions, where the instructions, when executed, perform the method of the terminal device in the foregoing method embodiments.

Fig. 10 is a block diagram of a network device provided in accordance with an embodiment of the present invention. The network device 1000 shown in fig. 10 includes: a processor 1001, a memory 1002, and a transceiver 1003. The processor 1001, the memory 1002, and the transceiver 1003 communicate with each other via internal connection paths, passing control and/or data signals.

The method disclosed by the embodiment of the invention can be applied to the processor 1001 or can be implemented by the processor 1001. The processor 1001 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 1001. The processor 1001 may be a general-purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may be located in a Random Access Memory (RAM), a flash memory, a read-only memory (ROM), a programmable ROM, an electrically erasable programmable memory, a register, or other storage media that are well known in the art. The storage medium is located in the memory 1002, and the processor 1001 reads the instructions in the memory 1002 and performs the steps of the method in combination with the hardware.

Optionally, in some embodiments, the memory 1002 may store instructions for performing a method performed by a network device, such as the method illustrated in fig. 3. The processor 1001 may execute the instructions stored in the memory 1002 to perform the steps of the network device in the method shown in fig. 3 in combination with other hardware (e.g., the transceiver 1003), and the specific working process and beneficial effects can be referred to the description in the embodiment shown in fig. 3.

Optionally, in some embodiments, the memory 1002 may store instructions for performing a method performed by a network device, such as the method illustrated in fig. 4. The processor 1001 may execute the instructions stored in the memory 1002 to perform the steps of the network device in the method shown in fig. 4 in combination with other hardware (e.g., the transceiver 1003), and the specific working process and beneficial effects can be referred to the description in the embodiment shown in fig. 4.

Optionally, in some embodiments, the memory 1002 may store instructions for performing a method performed by a network device, such as the method illustrated in fig. 5. The processor 1001 may execute the instructions stored in the memory 1002 to perform the steps of the network device in the method shown in fig. 5 in combination with other hardware (e.g., the transceiver 1003), and the specific working process and beneficial effects can be referred to the description in the embodiment shown in fig. 5.

Optionally, in some embodiments, the memory 1002 may store instructions for performing a method performed by a network device, such as the method illustrated in fig. 6. The processor 1001 may execute the instructions stored in the memory 1002 to perform the steps of the network device in the method shown in fig. 6 in combination with other hardware (e.g., the transceiver 1003), and the specific working process and beneficial effects can be referred to the description in the embodiment shown in fig. 6.

The embodiment of the application also provides a chip, which comprises a transceiver unit and a processing unit. The transceiver unit can be an input/output circuit and a communication interface; the processing unit is a processor or a microprocessor or an integrated circuit integrated on the chip. The chip may perform the method performed by the network device in the above embodiments.

As another form of the present embodiment, there is provided a computer-readable storage medium having stored thereon instructions that, when executed, perform the method of the network device in the above-described method embodiment.

As another form of the present embodiment, there is provided a computer program product containing instructions that, when executed, perform the method of the network device in the above-described method embodiment.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

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

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for resource allocation, comprising:

a first terminal device receives first information broadcasted by a target cell, wherein the target cell belongs to a network device, the first information includes N pieces of side link SL resource indication information and N pieces of region validity information, each of the N pieces of SL resource indication information is used for indicating an SL resource, the N pieces of region validity information are in one-to-one correspondence with the N pieces of SL resource indication information, each of the N pieces of region validity information is used for indicating an available region of the SL resource indicated by the corresponding SL resource indication information, the available region indicated by each of the region validity information includes at least two regions, the at least two regions include a region where the network device is located, N is a positive integer greater than or equal to 1, and the first terminal device is one terminal device in a terminal device group;

and the first terminal equipment determines a target SL resource according to the first information, wherein the target SL resource is the SL resource indicated by one of the N SL resource indication information.

2. The method of claim 1, wherein the method further comprises:

the first terminal equipment determines target SL occupation indication information, wherein the target SL occupation indication information is used for indicating that the target SL resources determined by the first terminal equipment are used;

and the first terminal equipment sends the target SL occupation indication information to the network equipment.

3. The method of claim 2, wherein the first information further includes Y SL occupation indication information having a correspondence relationship with the N SL resource indication information, each of the Y SL occupation indication information is used to indicate that a corresponding SL resource is used, Y is a positive integer greater than or equal to 1;

the first terminal equipment determines target SL occupation indication information, and the method comprises the following steps:

and the first terminal equipment determines the target SL occupation indication information from the Y SL occupation indication information.

4. The method of claim 3, wherein each of the Y SL occupancy indication information comprises at least one SL occupancy identifier, each of the at least one SL occupancy identifier corresponding to one number of members;

the first terminal device sends target SL occupation indication information to the network device, including:

the first terminal equipment determines a target SL occupation identification from the target SL occupation indication information, and the number of members corresponding to the target SL occupation identification is matched with the number of members of a terminal equipment group where the first terminal equipment is located;

and the first terminal equipment sends the target SL occupation identification to the network equipment.

5. The method according to any of claims 1 to 4, wherein before the first terminal device acquires the first information broadcasted by the target cell, the method further comprises:

the first terminal equipment determines to reselect from a first cell to a second cell, wherein the first cell belongs to a first area, the second cell belongs to a second area, and the second cell is the target cell;

and the first terminal equipment determines the service area of the first terminal equipment as the second area according to the area information or the cell information broadcasted by the second cell.

6. The method of claim 5, wherein the region information includes an identification of the second region,

the determining, by the first terminal device, that the service area of the first terminal device is the second area according to the area information or the cell information broadcasted by the second cell, includes:

and the first terminal equipment determines the service area of the first terminal equipment as the second area according to the identifier of the second area.

7. The method of claim 5, wherein the area information comprises a second cell identity list comprising identities of all cells located within the second area;

and the first terminal equipment determines that the service area of the first terminal equipment is the second area under the condition that the second cell identification list does not include the identification of the first cell.

8. The method of claim 5, wherein the cell information is an identity of the second cell,

and the first terminal equipment determines that the service area of the first terminal equipment is the second area under the condition that the first area cell identification list does not include the identification of the second cell, wherein the first area cell identification list includes the identifications of all cells located in the range of the first area.

9. The method according to any of claims 5 to 8, wherein the determining, by the first terminal device, a target SL resource according to the first information comprises:

the first terminal equipment determines target SL resource indication information according to the first information, wherein the target SL resource indication information is used for indicating the target SL resource, and the available area of the target SL resource at least comprises the first area and the second area;

and the first terminal equipment determines the target SL resource according to the target SL resource indication information.

10. The method of claim 9, wherein the method further comprises: and the first terminal equipment sends the target SL resource indication information to second terminal equipment, wherein the second terminal equipment is any terminal equipment in the terminal equipment group except the first terminal equipment.

11. The method of claim 9 or 10, wherein target area validity information includes an identification of the first area, the target area validity information indicating an available area for the target SL resources.

12. The method of claim 9 or 10, wherein target area validity information comprises a first list of cell identities, the first list of cell identities comprising identities of all cells within the first area, the target area validity information indicating an available area for the target SL resources.

13. A method for resource allocation, comprising:

the method comprises the steps that a network device generates first information, wherein the first information comprises N pieces of SL resource indication information and N pieces of region effective information, each piece of SL resource indication information in the N pieces of SL resource indication information is used for indicating SL resources, the N pieces of region effective information are in one-to-one correspondence with the N pieces of SL resource indication information, each piece of region effective information in the N pieces of region effective information is used for indicating an available region of SL resources indicated by the corresponding SL resource indication information, the available region indicated by each piece of region effective information comprises at least two regions, the at least two regions comprise a region where the network device is located, and N is a positive integer greater than or equal to 1;

and the network equipment broadcasts the first information in a target cell, wherein the target cell belongs to the network equipment.

14. The method of claim 13, wherein the method further comprises:

the network equipment receives target SL occupation indication information sent by terminal equipment, wherein the target SL occupation indication information is used for indicating target SL resources determined by the terminal equipment.

15. The method of claim 14, wherein the first information further includes Y SL occupation indication information, the Y SL occupation indication information having a correspondence relationship with the N SL resource indication information, each of the Y SL occupation indication information being used to indicate that a corresponding SL resource is used, Y being a positive integer greater than or equal to 1.

16. The method of claim 15, wherein each of the Y SL occupancy indication information comprises at least one SL occupancy identity, each of the at least one SL occupancy identity corresponding to one number of members;

the network device receiving target SL occupation indication information sent by the terminal device includes:

the network equipment receives a target SL occupation identification sent by the terminal equipment, and the number of members corresponding to the target SL occupation identification is matched with the number of members of a terminal equipment group in which the terminal equipment is located;

the method further comprises the following steps:

and the network equipment determines the number of the members of the terminal equipment group as the number of the members corresponding to the target SL occupation identifier.

17. The method of any of claims 13 to 16, further comprising:

the target cell broadcasts area information and/or cell information, the area information includes an identifier of an area where the network device is located or a target cell identifier list, the target cell identifier list includes identifiers of all cells located within the area range where the network device is located, and the cell information is a cell identifier belonging to the network device.

18. The method of any of claims 13 to 17, further comprising:

the network equipment determines that the use of the target SL resource meets a preset condition;

and the target cell stops broadcasting the target SL resource indication information and the target area effective information corresponding to the target SL resource indication information.

19. The method of claim 18, wherein the network device determining that the use of the target SL resource satisfies a preset condition comprises:

the network equipment determines that the number of terminal equipment groups using the target SL resources is greater than or equal to a first preset threshold value; and/or

And the network equipment determines that the number of the terminal equipment using the target SL resource is greater than or equal to a second preset threshold value.

20. The method of claim 18 or 19, wherein the method further comprises:

the network device generates second information, where the second information includes M SL resource indication information and M region validity information, where each of the M SL resource indication information is used to indicate an SL resource, the SL resources indicated by the M SL resource indication information are different from the SL resources indicated by the N SL resource indication information, the M region validity information is in one-to-one correspondence with the M SL resource indication information, each of the M region validity information is used to indicate an available region of the SL resource indicated by the corresponding SL resource indication information, and M is a positive integer greater than or equal to 1;

and the network equipment broadcasts the second information in a target cell.

21. The method according to any one of claims 13 to 20, wherein each of the area valid information includes an identification of an adjacent area, and the adjacent area is an area except for an area where the network device is located in an available area indicated by each of the area valid information.

22. The method according to any one of claims 13 to 20, wherein the each area valid information includes a cell identification list of an adjacent area, the cell identification list of the adjacent area includes identifications of all cells within a range of the adjacent area, and the adjacent area is an area except for an area where the network device is located in an available area indicated by the each area valid information.

23. A terminal device, characterized in that it comprises means for carrying out the method according to any one of claims 1 to 12.

24. A network device comprising means for performing the method of any of claims 13 to 22.

25. A communication apparatus, characterized in that the communication apparatus comprises: at least one processor and a communication interface for the communication device to interact with other communication devices, which when executed in the at least one processor causes the communication device to implement the functionality of the method according to any one of claims 1 to 12 on the first terminal device.

26. A communication apparatus, characterized in that the communication apparatus comprises: at least one processor and a communication interface for the communication device to interact with other communication devices, the program instructions, when executed in the at least one processor, causing the communication device to implement the functions on the network apparatus in the method according to any one of claims 13 to 22.

27. A computer program storage medium, characterized in that the computer readable medium has stored program code which, when run on a computer, causes the computer to perform the method according to any one of claims 1 to 12.

28. A computer program storage medium, characterized in that the computer readable medium has stored program code which, when run on a computer, causes the computer to perform the method of any one of claims 13 to 22.

29. A chip system, characterized in that the chip system comprises at least one processor, which when executed in the at least one processor causes the functionality of the method according to any one of claims 1 to 12 on the first terminal device to be implemented.

30. A chip system, characterized in that the chip system comprises at least one processor, which when program instructions are executed in the at least one processor causes the functions in the method according to any of claims 13 to 22 on the network device to be implemented.