CN113574953B

CN113574953B - Wireless communication method and terminal device

Info

Publication number: CN113574953B
Application number: CN201980094216.XA
Authority: CN
Inventors: 卢前溪; 赵振山; 林晖闵
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2024-02-20
Anticipated expiration: 2039-09-30
Also published as: CN113574953A; WO2021062708A1

Abstract

The embodiment of the application provides a wireless communication method and terminal equipment, which can avoid the conflict of parameters configured by an originating device and a receiving device for unicast communication of a side link, thereby improving the unicast communication performance of the side link. The wireless communication method is applied to side link unicast communication between the terminal equipment and another terminal equipment, and comprises the following steps: the terminal device uses different logical channels for side-link unicast communication in different transmission directions and/or the terminal device uses different logical channels for side-link unicast communication in different transmission modes.

Description

Wireless communication method and terminal device

Technical Field

The embodiments of the present application relate to the field of communications, and more particularly, to a wireless communication method and a terminal device.

Background

A terminal device (e.g., a vehicle-mounted terminal) may communicate with other terminals on a side uplink or communicate with a network device on an uplink or downlink, however, for unicast communication on the side uplink, both an originating device and a receiving device may perform configuration of transmission parameters and reception parameters according to a base station where the originating device and the receiving device reside or their own preconfiguration information, which may cause a collision of configuration parameters, thereby affecting communication performance. For unicast communication of a side link, how to avoid the conflict between parameters configured by an originating device and a receiving device is a problem to be solved.

Disclosure of Invention

The embodiment of the application provides a wireless communication method and terminal equipment, which can avoid the conflict of parameters configured by an originating device and a receiving device for unicast communication of a side link, thereby improving the unicast communication performance of the side link.

In a first aspect, a wireless communication method is provided, the method being applied to side link unicast communication between a terminal device and another terminal device, the method comprising:

the terminal device uses different logical channels for side-link unicast communication in different transmission directions and/or the terminal device uses different logical channels for side-link unicast communication in different transmission modes.

In a second aspect, a terminal device is provided for performing the method of the first aspect or each implementation manner thereof.

Specifically, the terminal device comprises functional modules for performing the method of the first aspect or its implementation manner.

In a third aspect, a terminal device is provided comprising a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory and executing the method in the first aspect or various implementation manners thereof.

In a fourth aspect, there is provided an apparatus for implementing the method of the first aspect or each implementation thereof.

Specifically, the device comprises: a processor for calling and running a computer program from a memory, causing a device in which the apparatus is installed to perform the method as in the first aspect or implementations thereof described above.

In a fifth aspect, a computer-readable storage medium is provided for storing a computer program that causes a computer to perform the method of the first aspect or implementations thereof.

In a sixth aspect, a computer program product is provided, comprising computer program instructions for causing a computer to perform the method of the first aspect or implementations thereof.

In a seventh aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of the first aspect or implementations thereof described above.

By the technical scheme, the terminal equipment uses different logic channels for side link unicast communication in different transmission directions, and/or uses different logic channels for side link unicast communication in different transmission modes, so that the conflict of parameters configured by the transmitting end equipment and the receiving end equipment can be avoided for the side link unicast communication, and the side link unicast communication performance is improved.

Drawings

Fig. 1 is a schematic frame diagram of a transmission mode of an embodiment of the present application.

Fig. 2 is a schematic frame diagram of another transmission mode of an embodiment of the present application.

Fig. 3 is a schematic flow chart of a wireless communication method provided according to an embodiment of the present application.

Fig. 4 is a schematic diagram of logical channel configuration in different transmission directions according to an embodiment of the present application.

Fig. 5 is a schematic diagram of a logic channel configuration of a different transmission mode according to an embodiment of the present application.

Fig. 6 is a schematic block diagram of a terminal device according to an embodiment of the present application.

Fig. 7 is a schematic block diagram of a communication device provided according to an embodiment of the present application.

Fig. 8 is a schematic block diagram of an apparatus provided in accordance with an embodiment of the present application.

Fig. 9 is a schematic block diagram of a communication system provided according to an embodiment of the present application.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden for the embodiments herein, are intended to be within the scope of the present application.

The embodiments of the present application may be applicable to any terminal device-to-terminal device communication framework.

For example, vehicle-to-vehicle (Vehicle to Vehicle, V2V), vehicle-to-other devices (Vehicle to Everything, V2X), terminal-to-terminal (D2D), and the like.

The terminal in the embodiments of the present application may be any device or apparatus configured with a physical layer and a media access control layer, and the terminal device may also be referred to as an access terminal. Such as a User Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device having wireless communication capabilities, a computing device or other linear processing device connected to a wireless modem, an in-vehicle device, a wearable device, or the like. The embodiment of the present application will be described by taking an in-vehicle terminal as an example, but is not limited thereto.

Alternatively, in some embodiments of the present application, embodiments of the present application may be adapted to the third generation partnership project (3rd Generation Partnership Project,3GPP) defining two transmission modes, denoted respectively: mode a and mode B.

Fig. 1 is a schematic diagram of mode a of the embodiment of the present application. Fig. 2 is a schematic diagram of mode B of the embodiment of the present application.

In mode a shown in fig. 1, transmission resources of the in-vehicle terminals (in-vehicle terminals 121 and 122) are allocated by the base station 110, and the in-vehicle terminals transmit data on the side links according to the resources allocated by the base station 110. Specifically, the base station 110 may allocate resources for single transmission to the terminal, or may allocate resources for semi-static transmission to the terminal.

In mode B shown in fig. 2, the vehicle-mounted terminals (the vehicle-mounted terminal 131 and the vehicle-mounted terminal 132) adopt a transmission mode of interception (sensing) and reservation (reservation), and the vehicle-mounted terminal autonomously selects transmission resources on resources of the side links to perform data transmission.

The following specifically describes the in-vehicle terminal 131 as an example.

The vehicle-mounted terminal 131 acquires an available transmission resource set in a resource pool in a interception mode, and the vehicle-mounted terminal 131 randomly selects one transmission resource from the set to transmit data.

Because the service in the internet of vehicles system has a periodic characteristic, in the embodiment of the present application, the vehicle terminal 131 may also adopt a semi-static transmission manner. That is, after the vehicle-mounted terminal 131 acquires one transmission resource, the transmission resource is continuously used in a plurality of transmission periods, so as to reduce the probability of resource reselection and resource collision.

The vehicle-mounted terminal 131 may carry the information of the reserved secondary transmission resource in the control information of the present transmission, so that other terminals (for example, the vehicle-mounted terminal 132) may determine whether the resource is reserved and used by the user by detecting the control information of the user, thereby achieving the purpose of reducing the resource conflict.

It should be noted that, in the New Radio (NR) vehicle to other devices (Vehicle to Everything, V2X), the user may be in a hybrid mode, and may use the mode a to acquire resources, and may use the mode B to acquire resources at the same time.

For configuration of unicast links, a symmetrical mode is adopted for configuration:

the UE1 carries out transmission parameter configuration on a bearer used for carrying out data transmission on the UE1 according to the resident base station or the preconfigured information of the UE1, and the corresponding UE2 carries out the configuration on the reception parameter of the bearer used for carrying out data reception according to the UE;

The UE2 carries out transmission parameter configuration on the bearer used for carrying out data transmission on the UE2 according to the information of the resident base station or the pre-configuration of the UE2, and the corresponding UE1 carries out the configuration of the receiving parameter on the bearer used for carrying out data reception according to the UE.

Based on the technical problems, the application designs a wireless communication method, which can avoid the conflict of parameters configured by the transmitting device and the receiving device.

Fig. 3 is a schematic flow chart of a wireless communication method 200 of an embodiment of the present application. The method 200 is applied to side link unicast communication between a terminal device and another terminal device. The terminal device shown in fig. 3 may be a vehicle-mounted terminal as shown in fig. 1 or fig. 2.

As shown in fig. 3, the method 200 may include some or all of the following:

s210, the terminal device uses different logical channels for side link unicast communication in different transmission directions, and/or uses different logical channels for side link unicast communication in different transmission modes.

Optionally, in an embodiment of the present application, the different transmission directions include:

the terminal equipment is used as a data transmitting end, or

The terminal device serves as a receiving end of the data.

Optionally, the data comprises at least one of:

service data adaptation protocol data units (Service Data Adaptation Protocol Protocol Data Unit, SDAP PDU), service data adaptation protocol service data units (Service Data Adaptation Protocol service data unit, SDAP SDU), packet data convergence protocol data units (Packet Data Convergence Protocol Protocol Data Unit, PDCP PDU), radio link control protocol data units (Radio Link Control Protocol Data Unit, RLC PDU), and medium access control protocol data units (Media Access Control Protocol Data Unit, MAC PDU).

Optionally, in an embodiment of the present application, the different transmission modes include a radio link control acknowledged mode (Radio Link Control Acknowledged Mode, RLC AM) and a radio link control unacknowledged mode (Radio Link Control Unacknowledged Mode, RLC UM).

Optionally, in this embodiment of the present application, the terminal device uses different logical channels for unicast communication of the side link in the different transmission directions according to a first correspondence, where the first correspondence reflects a correspondence between different logical channels and different transmission directions.

Optionally, the first correspondence is at least one of the following:

the first corresponding relation configured by the network equipment, the first corresponding relation configured by the terminal equipment, the first corresponding relation indicated by the upper layer and the first corresponding relation agreed by the protocol.

Note that, the upper layer indication may be, for example: the terminal device is a sender of a side-link PC5 signaling (PC 5-S), and the terminal device determines the first correspondence according to predefined relevant configuration parameters that can be used by the sender.

Optionally, in this embodiment of the present application, the terminal device uses different logical channels for unicast communication of the side link of the different transmission modes according to a second correspondence, where the second correspondence reflects a correspondence between different logical channels and different transmission modes.

Optionally, the second correspondence is at least one of the following:

the second corresponding relation configured by the network equipment, the second corresponding relation configured by the terminal equipment, the second corresponding relation indicated by the upper layer, and the second corresponding relation agreed by the protocol.

Note that, the upper layer indicates that the second correspondence may be, for example: the terminal equipment is a sending end of the PC5-S signaling, and the terminal equipment determines the second corresponding relation according to the predefined relevant configuration parameters which can be used by the sending end.

Alternatively, as example 1, the terminal device selects a first logical channel from the first set of logical channels for sidelink unicast communication.

Alternatively, in example 1, the first logical channel may be used for side link unicast communication for a first radio link control (Radio Link Control, RLC) mode, wherein the first RLC mode is RLC AM or RLC UM.

For example, the first RLC mode is RLC AM.

For another example, the first RLC mode is RLC UM.

Assuming that UE1 is a sender of a PC5-S signaling-direct communication request (direct_communication_request), UE1 determines a logical channel identification (Identity, ID) according to a range of logical channels that can be used by a predefined sender, and similarly since UE2 is a receiver of the PC5-S signaling-direct communication request (direct_communication_request), UE2 determines a logical channel ID according to a range of logical channels that can be used by a predefined receiver.

For example, the transmitting end may use logical channel ID ranges x to y, and the receiving end may use logical channel ID ranges w to z, and then the two UEs select specific IDs in the respective ID ranges for the side uplink bearers a and B, respectively, where x to y and w to z have no intersection.

Alternatively, in example 1, the terminal device may select a first logical channel from the first set of logical channels for side link unicast communication according to an indication of the network device.

Specifically, the terminal device receives first indication information sent by the network device, where the first indication information is used to instruct the terminal device to select an mth logical channel in the first logical channel set as the first logical channel, and m is a positive integer; and the terminal equipment selects the first logic channel from the first logic channel set according to the first indication information to carry out side link unicast communication.

Alternatively, in example 1, the terminal device may feed back the ID of the selected first logical channel to the counterpart device.

Specifically, the terminal device transmits second information including an identification ID of the first logical channel to the counterpart device through PC5 radio resource control (Radio Resource Control, RRC).

Optionally, in example 1, the terminal device may further send first configuration information to the peer device through PC5RRC, where the first configuration information is sending configuration information of the terminal device for the first logical channel. Thus, the peer device can perform transmission configuration for the first logical channel based on the first configuration information.

Optionally, the terminal device receives the first configuration information sent by the network device. I.e. the first configuration information is configured for the network device.

Optionally, the terminal device obtains a first mapping relationship from a system message of the network device or from pre-configuration information, where the first mapping relationship is a mapping relationship between a quality of service (Quality of Service, qoS) attribute and a sending configuration; and the terminal equipment determines the first configuration information according to the QoS attribute information and the first mapping relation.

For the terminal device in the idle state or the inactive state, the first mapping relationship may be obtained from a system message of the network device.

Alternatively, in example 1, in the case where the opposite terminal device selects the second logical channel for side link unicast communication, the terminal device may determine the transmission parameters of the second logical channel based on its implementation. For example, the terminal device performs transmission configuration for a second logical channel according to its own implementation, the second logical channel being a logical channel used by the peer device for side link unicast communication.

Alternatively, in example 1, in the case where the opposite terminal device selects the second logical channel for the side link unicast communication, the terminal device may determine the transmission parameter of the second logical channel based on the transmission configuration information for the second logical channel fed back by the opposite terminal device. For example, the terminal device receives second configuration information sent by the opposite terminal device, where the second configuration information is sending configuration information of the opposite terminal device for a second logical channel, and the second logical channel is a logical channel used by the opposite terminal device for unicast communication of the side link; and the terminal equipment performs transmission configuration for the second logic channel according to the second configuration information.

Optionally, in example 1, the terminal device sends third information to the network device, the third information including an ID of the second logical channel and/or the second configuration information.

Alternatively, in example 1, in the case where the opposite terminal device selects the second logical channel for the side link unicast communication, the terminal device may determine the transmission parameter of the second logical channel based on the transmission configuration information for the second logical channel indicated by the network device.

For example, the terminal device receives fourth information sent by the network device, where the fourth information is used to configure a sending parameter for a second logical channel, and the second logical channel is a logical channel used by the peer device for unicast communication of the side link; and the terminal equipment performs transmission configuration for the second logic channel according to the fourth information.

Optionally, in example 1, the terminal device receives fourth information sent by the network device, the fourth information including a transmission configuration for the second logical channel.

Optionally, in example 1, the terminal device obtains a second mapping relationship from a system message of the network device or from preconfigured information, where the second mapping relationship is a mapping relationship between QoS attributes and a sending configuration; and the terminal equipment performs transmission configuration for the second logic channel according to the QoS attribute information and the second mapping relation.

Alternatively, as example 2, the terminal device receives first information sent by the peer device through PC5RRC signaling, the first information including an ID of a second logical channel, the second logical channel being a logical channel used by the peer device for side link unicast communication; and the terminal equipment selects a first logical channel from the logical channels except the second logical channel in the first logical channel set to perform side link unicast communication.

Alternatively, in example 2, the terminal device may select the first logical channel from the logical channels other than the second logical channel in the first logical channel set for side link unicast communication according to an instruction of the network device.

Specifically, the terminal device receives second indication information sent by the network device, where the second indication information is used to instruct the terminal device to select an nth logical channel from logical channels except the second logical channel in the first logical channel set as the first logical channel, and n is a positive integer; and the terminal equipment selects the first logical channel from the logical channels except the second logical channel in the first logical channel set according to the second indication information to perform side link unicast communication.

Alternatively, in example 2, the terminal device may feed back the ID of the selected first logical channel to the counterpart device.

Specifically, the terminal device transmits second information to the peer device through the PC5RRC, the second information including the ID of the first logical channel.

Optionally, in example 2, the terminal device may further send first configuration information to the peer device through PC5RRC, where the first configuration information is the sending configuration information of the terminal device for the first logical channel. Thus, the peer device can perform transmission configuration for the first logical channel based on the first configuration information.

Optionally, the terminal device obtains a first mapping relationship from a system message of the network device or from pre-configuration information, where the first mapping relationship is a mapping relationship between QoS attribute and transmission configuration; and the terminal equipment determines the first configuration information according to the QoS attribute information and the first mapping relation.

Alternatively, in example 2, in the case where the opposite terminal device selects the second logical channel for side link unicast communication, the terminal device may determine the transmission parameters of the second logical channel based on its implementation. For example, the terminal device performs transmission configuration for a second logical channel according to its own implementation, the second logical channel being a logical channel used by the peer device for side link unicast communication.

Alternatively, in example 2, in the case where the peer device selects the second logical channel for the side link unicast communication, the terminal device may determine the transmission parameter of the second logical channel based on the transmission configuration information for the second logical channel fed back by the peer device. For example, the terminal device receives second configuration information sent by the opposite terminal device, where the second configuration information is sending configuration information of the opposite terminal device for a second logical channel, and the second logical channel is a logical channel used by the opposite terminal device for unicast communication of the side link; and the terminal equipment performs transmission configuration for the second logic channel according to the second configuration information.

Optionally, in example 2, the terminal device sends third information to the network device, the third information including an ID of the second logical channel and/or the second configuration information.

Alternatively, in example 2, in the case where the opposite terminal device selects the second logical channel for the side link unicast communication, the terminal device may determine the transmission parameter of the second logical channel based on the transmission configuration information for the second logical channel indicated by the network device.

Optionally, in example 2, the terminal device receives fourth information sent by the network device, the fourth information including a transmission configuration for the second logical channel.

Optionally, in example 2, the terminal device obtains a second mapping relationship from a system message of the network device or from the preconfigured information, where the second mapping relationship is a mapping relationship between QoS attributes and a sending configuration; and the terminal equipment performs transmission configuration for the second logic channel according to the QoS attribute information and the second mapping relation.

Alternatively, as example 3, the terminal device receives first information sent by the peer device through PC5RRC signaling, the first information including an ID of a second logical channel, and the second logical channel being a logical channel used by the peer device for side link unicast communication for the first RLC mode; and the terminal equipment selects a first logic channel from the first logic channel set according to the ID of the second logic channel to perform side link unicast communication aiming at the second RLC mode.

Alternatively, in example 3, if the second RLC mode is the same as the first RLC mode,

the terminal device selects the first logical channel from the first set of logical channels for side link unicast communication for the second RLC mode.

For example, the identity of the first logical channel is the same as the identity of the second logical channel.

Optionally, the terminal device receives third indication information sent by the network device, where the third indication information is used to instruct the terminal device to select a q-th logical channel in the first logical channel set as the first logical channel, and q is a positive integer; and the terminal equipment selects the first logic channel from the first logic channel set according to the third indication information to perform side link unicast communication aiming at the second RLC mode.

Alternatively, in example 3, if the second RLC mode is different from the first RLC mode,

the terminal device selects a first logical channel from the first set of logical channels except for the second logical channel for side link unicast communication for the second RLC mode.

Optionally, the terminal device receives fourth indication information sent by the network device, where the fourth indication information is used to instruct the terminal device to select a p-th logical channel from the logical channels except the second logical channel in the first logical channel set as the first logical channel, and p is a positive integer; and the terminal equipment selects the first logic channel from the first logic channel set according to the fourth indication information to perform side link unicast communication aiming at the second RLC mode.

Alternatively, in example 3, the terminal device may feed back the ID of the selected first logical channel to the counterpart device.

Optionally, in example 3, the terminal device may further send first configuration information to the peer device through PC5RRC, where the first configuration information is the sending configuration information of the terminal device for the first logical channel. Thus, the peer device can perform transmission configuration for the first logical channel based on the first configuration information.

Alternatively, in example 3, in the case where the opposite terminal device selects the second logical channel for side link unicast communication, the terminal device may determine the transmission parameters of the second logical channel based on its implementation. For example, the terminal device performs transmission configuration for a second logical channel according to its own implementation, the second logical channel being a logical channel used by the peer device for side link unicast communication.

Alternatively, in example 3, in the case where the peer device selects the second logical channel for the side link unicast communication, the terminal device may determine the transmission parameter of the second logical channel based on the transmission configuration information for the second logical channel fed back by the peer device. For example, the terminal device receives second configuration information sent by the opposite terminal device, where the second configuration information is sending configuration information of the opposite terminal device for a second logical channel, and the second logical channel is a logical channel used by the opposite terminal device for unicast communication of the side link; and the terminal equipment performs transmission configuration for the second logic channel according to the second configuration information.

Optionally, in example 3, the terminal device sends third information to the network device, the third information including an ID of the second logical channel and/or the second configuration information.

Alternatively, in example 3, in the case where the opposite terminal device selects the second logical channel for the side link unicast communication, the terminal device may determine the transmission parameter of the second logical channel based on the transmission configuration information for the second logical channel indicated by the network device. For example, the terminal device receives fourth information sent by the network device, where the fourth information is used to configure a sending parameter for a second logical channel, and the second logical channel is a logical channel used by the peer device for unicast communication of the side link; and the terminal equipment performs transmission configuration for the second logic channel according to the fourth information.

Optionally, in example 3, the terminal device receives fourth information sent by the network device, the fourth information including a transmission configuration for the second logical channel.

Optionally, in example 3, the terminal device obtains a second mapping relationship from a system message of the network device or from the preconfigured information, where the second mapping relationship is a mapping relationship between QoS attributes and a sending configuration; and the terminal equipment performs transmission configuration for the second logic channel according to the QoS attribute information and the second mapping relation.

The following describes the scheme of the wireless communication method 200 in combination with the first embodiment to the second embodiment.

In the first embodiment, the logic channel division in different transmission directions can be specifically performed by selecting the logic channel according to the flow 1 a-1 f shown in fig. 4:

ue1 obtains the parameter configuration of the side uplink bearer a for the SDAP PDU transmission from the camped base station 1 or pre-configuration 1.

Ue1 performs logical channel selection.

Since UE1 is the sender of PC5-S signaling, UE1 determines the logical channel ID from the range of logical channels that the predefined sender can use.

For example, if the sender can use the logical channel ID range x to y, the UE1 selects the logical channel a in x to y to perform the side link unicast communication.

In the selection process, the UE1 may select the logical channel a in combination with the indication information issued by the network device, for example, the network device may indicate what logical channel ID in the range x-y is the logical channel a, so as to further limit the logical channel selection of the UE 1.

UE1 informs UE2 of the selected logical channel a through PC5-RRC and informs UE2 of the transmission parameter configuration of the corresponding logical channel a.

Ue2 performs logical channel selection.

Alternatively, since UE2 is the recipient of PC5-S signaling, UE2 determines the logical channel ID from the range of logical channels that the predefined recipient can use.

For example, if the receiver can use the logical channel ID range w to z, the UE 2 selects the logical channel B from w to z to perform the side link unicast communication.

In the selection process, the UE 2 may select the logical channel B in combination with the indication information issued by the network device, for example, the network device may indicate what logical channel ID in the range w to z is the logical channel B, thereby further limiting the logical channel selection of the UE 2.

Ue 2 transmits logical channel a and the transmission parameter configuration of logical channel a to base station 2.

The 1f UE 2 performs transmission parameter configuration for the logical channel a.

Optionally, UE 2 performs the relevant transmission configuration for logical channel a according to the transmission parameter configuration of logical channel a sent by UE 1.

Optionally, the UE 2 performs relevant transmission configuration for the logical channel a according to the parameter configuration of the logical channel a issued by the network device.

Optionally, UE 2 performs the relevant transmission configuration for logical channel a according to its implementation.

It should be noted that, UE 1 may also perform the related actions of UE 2, and correspondingly, UE 2 may also perform the related actions of UE 1.

In the second embodiment, the logic channel division of different RLC modes may be specifically performed by logic channel selection according to the flow 2 a-2 f shown in fig. 5:

2a. Ue1 obtains from the camped base station 1 or pre-configuration 1 the parameter configuration of the side uplink bearer a for the SDAP PDU transmission.

Ue1 performs logical channel selection for the first RLC mode.

Since UE1 is the sender of PC5-S signaling, UE1 determines the logical channel ID for the first RLC mode from the range of logical channels that the predefined sender can use.

For example, the sender may use the logical channel ID range x to y, and then UE1 selects logical channel a in x to y for side link unicast communication for the first RLC mode.

For example, UE1 first selects logical channel a and sends it to UE 2, UE 2 finds that RLC AM is used on logical channel a, if UE 2 also uses RLC AM, UE 2 may also use logical channel a (and if a is in the range w-z), otherwise UE 2 needs to select another logical channel in the range w-z.

UE1 informs UE 2 of the selected logical channel a through PC5-RRC and informs UE 2 of the transmission parameter configuration of the corresponding logical channel a.

Ue2 performs logical channel selection for the second RLC mode.

For example, if the receiver can use the logical channel ID range w to z, the UE2 selects the logical channel B from w to z to perform the side link unicast communication.

In the selection process, the UE2 may select the logical channel B in combination with the indication information issued by the network device, for example, the network device may indicate what logical channel ID in the range w to z is the logical channel B, thereby further limiting the logical channel selection of the UE 2.

Ue2 transmits logical channel a and the transmission parameter configuration of logical channel a to base station 2.

Ue2 performs transmission parameter configuration for logical channel a.

Optionally, UE2 performs the relevant transmission configuration for logical channel a according to the transmission parameter configuration of logical channel a sent by UE 1.

Optionally, the UE2 performs relevant transmission configuration for the logical channel a according to the parameter configuration of the logical channel a issued by the network device.

Optionally, UE2 performs the relevant transmission configuration for logical channel a according to its implementation.

It should be noted that, UE 1 may also perform the related actions of UE2, and correspondingly, UE2 may also perform the related actions of UE 1.

Therefore, in the embodiment of the application, the terminal device uses different logic channels for side link unicast communication in different transmission directions, and/or uses different logic channels for side link unicast communication in different transmission modes, so that for side link unicast communication, the conflict of parameters configured by the transmitting device and the receiving device can be avoided, and the side link unicast communication performance is improved.

Fig. 6 shows a schematic block diagram of a terminal device 300 according to an embodiment of the present application. As shown in fig. 6, the terminal device 300 is configured to perform side link unicast communication with another terminal device, and the terminal device 300 includes:

a communication unit 310 for side-link unicast communication using different logical channels for different transmission directions and/or the communication unit 310 is further for side-link unicast communication using different logical channels for different transmission modes.

Optionally, the different transmission directions include:

the terminal device acts as a data transmitting end, or,

the terminal device serves as a receiving end of the data.

Optionally, the data comprises at least one of:

SDAP PDU, SDAP SDU, PDCP PDU, RLC PDU, and MAC PDU.

Optionally, the different transmission modes include RLC AM and RLC UM.

Optionally, the communication unit 310 is specifically configured to:

and according to the first corresponding relation, using different logic channels for unicast communication of the side links in different transmission directions, wherein the first corresponding relation reflects the corresponding relation between the different logic channels and the different transmission directions.

Optionally, the first correspondence is at least one of the following:

Optionally, the communication unit 310 is specifically configured to:

and according to a second corresponding relation, using different logic channels for unicast communication of the side links of the different transmission modes, wherein the second corresponding relation reflects the corresponding relation between the different logic channels and the different transmission modes.

Optionally, the second correspondence is at least one of the following:

Optionally, the communication unit 310 is further configured to:

and selecting a first logical channel from the first logical channel set for side link unicast communication.

Optionally, the communication unit 310 is further configured to:

and selecting a first logic channel from the first logic channel set for side link unicast communication, wherein the first logic channel is used for side link unicast communication aiming at a first RLC mode, and the first RLC mode is RLC AM or RLC UM.

Optionally, the communication unit 310 is specifically configured to:

receiving first indication information sent by network equipment, wherein the first indication information is used for indicating the terminal equipment to select an mth logical channel in the first logical channel set as the first logical channel, and m is a positive integer;

and selecting the first logic channel from the first logic channel set according to the first indication information to perform side link unicast communication.

Optionally, the communication unit 310 is further configured to:

receiving first information sent by opposite terminal equipment through PC5RRC signaling, wherein the first information comprises an ID of a second logic channel, and the second logic channel is a logic channel used by the opposite terminal equipment for unicast communication of a side link;

and selecting a first logical channel from the logical channels except the second logical channel in the first logical channel set for side link unicast communication.

Optionally, the communication unit 310 is specifically configured to:

receiving second indication information sent by the network equipment, wherein the second indication information is used for indicating the terminal equipment to select an nth logical channel from logical channels except the second logical channel in the first logical channel set as the first logical channel, and n is a positive integer;

and selecting the first logical channel from the logical channels except the second logical channel in the first logical channel set according to the second indication information to perform side link unicast communication.

Optionally, the communication unit 310 is further configured to:

receiving first information sent by opposite terminal equipment through PC5RRC signaling, wherein the first information comprises an ID of a second logic channel, and the second logic channel is a logic channel used by the opposite terminal equipment for unicast communication aiming at a side link of a first RLC mode;

and selecting a first logical channel from the first logical channel set according to the ID of the second logical channel to perform side link unicast communication aiming at the second RLC mode.

Optionally, if the second RLC mode is the same as the first RLC mode,

the communication unit 310 specifically is configured to:

the first logical channel is selected from the first set of logical channels for side link unicast communication for the second RLC mode.

Optionally, the identity of the first logical channel is the same as the identity of the second logical channel.

Optionally, the communication unit 310 is specifically configured to:

receiving third indication information sent by the network device, where the third indication information is used to instruct the terminal device to select a q-th logical channel in the first logical channel set as the first logical channel, and q is a positive integer;

and selecting the first logic channel from the first logic channel set according to the third indication information to perform side link unicast communication aiming at the second RLC mode.

Optionally, if the second RLC mode is different from the first RLC mode,

the communication unit 310 specifically is configured to:

and selecting a first logical channel from the first logical channel set except the second logical channel to perform side link unicast communication for the second RLC mode.

Optionally, the communication unit 310 is specifically configured to:

receiving fourth indication information sent by the network device, where the fourth indication information is used to instruct the terminal device to select a p-th logical channel from logical channels except the second logical channel in the first logical channel set as the first logical channel, and p is a positive integer;

And selecting the first logic channel from the first logic channel set according to the fourth indication information to perform side link unicast communication aiming at the second RLC mode.

Optionally, the communication unit 310 is further configured to send second information to the peer device through the PC5RRC, where the second information includes the ID of the first logical channel.

Optionally, the communication unit 310 is further configured to send first configuration information to the peer device through PC5RRC, where the first configuration information is the sending configuration information of the terminal device for the first logical channel.

Optionally, the communication unit 310 is further configured to receive the first configuration information sent by the network device.

Optionally, the terminal device 300 further includes: a processing unit 320, wherein:

the communication unit 310 is further configured to obtain a first mapping relationship from a system message of the network device or from pre-configuration information, where the first mapping relationship is a mapping relationship between QoS attributes and a sending configuration;

the processing unit 320 is configured to determine the first configuration information according to QoS attribute information and the first mapping relationship.

Optionally, the terminal device 300 further includes:

the processing unit 320 is configured to perform, according to its implementation, a transmission configuration for a second logical channel, where the second logical channel is a logical channel used by the peer device for side link unicast communication.

Optionally, the terminal device 300 further comprises a processing unit 320,

the communication unit 310 is further configured to receive second configuration information sent by the peer device, where the second configuration information is sending configuration information of the peer device for a second logical channel, and the second logical channel is a logical channel used by the peer device for unicast communication of a side link;

the processing unit 320 is further configured to perform a transmission configuration for the second logical channel according to the second configuration information.

Optionally, the communication unit 310 is further configured to send third information to the network device, where the third information includes the ID of the second logical channel and/or the second configuration information.

Optionally, the terminal device 300 further comprises a processing unit 320,

the communication unit 310 is further configured to receive fourth information sent by the network device, where the fourth information is used to configure a transmission parameter for a second logical channel, and the second logical channel is a logical channel used by the peer device for unicast communication of the side link;

the processing unit 320 is configured to perform transmission configuration for the second logical channel according to the fourth information.

Optionally, the communication unit 310 is further configured to receive fourth information sent by the network device, where the fourth information includes a sending configuration for the second logical channel.

Optionally, the terminal device 300 further includes: the processing unit 320 is configured to process the data,

the communication unit 310 is further configured to obtain a second mapping relationship from a system message of the network device or from the preconfiguration information, where the second mapping relationship is a mapping relationship between QoS attributes and a sending configuration;

the processing unit 320 is configured to perform transmission configuration for the second logical channel according to the QoS attribute information and the second mapping relationship.

It should be understood that the terminal device 300 according to the embodiment of the present application may correspond to the terminal device in the embodiment of the method of the present application, and the foregoing and other operations and/or functions of each unit in the terminal device 300 are respectively for implementing the corresponding flow of the terminal device in the method 200 shown in fig. 3, which is not described herein for brevity.

Fig. 7 is a schematic structural diagram of a communication device 400 provided in an embodiment of the present application. The communication device 400 shown in fig. 7 comprises a processor 410, from which the processor 410 may call and run a computer program to implement the method in the embodiments of the present application.

Optionally, as shown in fig. 7, the communication device 400 may also include a memory 420. Wherein the processor 410 may call and run a computer program from the memory 420 to implement the methods in embodiments of the present application.

Wherein the memory 420 may be a separate device from the processor 410 or may be integrated into the processor 410.

Optionally, as shown in fig. 7, the communication device 400 may further include a transceiver 430, and the processor 410 may control the transceiver 430 to communicate with other devices, and in particular, may send information or data to other devices, or receive information or data sent by other devices.

Among other things, transceiver 430 may include a transmitter and a receiver. Transceiver 430 may further include antennas, the number of which may be one or more.

Optionally, the communication device 400 may be specifically a network device in the embodiment of the present application, and the communication device 400 may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the communication device 400 may be specifically a terminal device in the embodiment of the present application, and the communication device 400 may implement a corresponding flow implemented by the terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

Fig. 8 is a schematic structural view of an apparatus of an embodiment of the present application. The apparatus 500 shown in fig. 8 includes a processor 510, and the processor 510 may call and run a computer program from a memory to implement the methods in the embodiments of the present application.

Optionally, as shown in fig. 8, the apparatus 500 may further comprise a memory 520. Wherein the processor 510 may call and run a computer program from the memory 520 to implement the methods in embodiments of the present application.

Wherein the memory 520 may be a separate device from the processor 510 or may be integrated into the processor 510.

Optionally, the apparatus 500 may further comprise an input interface 530. The processor 510 may control the input interface 530 to communicate with other devices or chips, and in particular, may obtain information or data sent by other devices or chips.

Optionally, the apparatus 500 may further comprise an output interface 540. Wherein the processor 510 may control the output interface 540 to communicate with other devices or chips, and in particular may output information or data to other devices or chips.

Optionally, the apparatus may be applied to a network device in the embodiments of the present application, and the apparatus may implement a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity.

Optionally, the apparatus may be applied to a terminal device in the embodiment of the present application, and the apparatus may implement a corresponding flow implemented by the terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

Alternatively, the device mentioned in the embodiments of the present application may also be a chip. For example, a system-on-chip or a system-on-chip, etc.

Fig. 9 is a schematic block diagram of a communication system 600 provided by an embodiment of the present application. As shown in fig. 9, the communication system 600 includes a terminal device 610 and a network device 620.

The terminal device 610 may be used to implement the corresponding functions implemented by the terminal device in the above method, which are not described herein for brevity.

It should be appreciated that the processor of an embodiment of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application 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 a method disclosed in connection with the embodiments of the present application may be embodied directly in hardware, in a decoded processor, or in a combination of hardware and software modules in a decoded processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memory is exemplary but not limiting, and for example, the memory in the embodiments of the present application may be Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), direct RAM (DR RAM), and the like. That is, the memory in embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

Embodiments of the present application also provide a computer-readable storage medium for storing a computer program.

Optionally, the computer readable storage medium may be applied to a network device in the embodiments of the present application, and the computer program causes a computer to execute a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity.

Optionally, the computer readable storage medium may be applied to a terminal device in an embodiment of the present application, and the computer program causes a computer to execute a corresponding procedure implemented by the terminal device in each method of the embodiment of the present application, which is not described herein for brevity.

Embodiments of the present application also provide a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to a network device in the embodiments of the present application, and the computer program instructions cause the computer to execute corresponding flows implemented by the network device in the methods in the embodiments of the present application, which are not described herein for brevity.

Optionally, the computer program product may be applied to a terminal device in an embodiment of the present application, and the computer program instructions cause the computer to execute a corresponding procedure implemented by the terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to a network device in the embodiments of the present application, and when the computer program runs on a computer, the computer is caused to execute a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity.

Optionally, the computer program may be applied to a terminal device in the embodiments of the present application, and when the computer program runs on a computer, the computer is caused to execute a corresponding flow implemented by the terminal device in each method in the embodiments of the present application, which is not described herein for brevity.

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 solution. 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 will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown 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 may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in 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. For such understanding, the technical solutions of the present application may be embodied in essence or in a part contributing to the prior art or in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely 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 think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to 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 wireless communication method, wherein the method is applied to side link unicast communication between a terminal device and another terminal device, the method comprising:

the terminal equipment uses different logic channels for side link unicast communication in different transmission directions, and/or uses different logic channels for side link unicast communication in different transmission modes;

the method further comprises the steps of:

the terminal equipment receives first information sent by opposite terminal equipment through PC5 RRC signaling, wherein the first information comprises an ID of a second logic channel, and the second logic channel is a logic channel used by the opposite terminal equipment for unicast communication of a side link aiming at a first RLC mode;

the terminal equipment selects a first logic channel from a first logic channel set according to the ID of the second logic channel to perform side link unicast communication aiming at a second RLC mode; if the second RLC mode is different from the first RLC mode, the terminal device receives fourth indication information sent by the network device, where the fourth indication information is used to instruct the terminal device to select a p-th logical channel from logical channels other than the second logical channel in the first logical channel set as the first logical channel, and p is a positive integer; and the terminal equipment selects the first logical channel from the first logical channel set according to the fourth indication information to perform side link unicast communication aiming at the second RLC mode.

2. The method of claim 1, wherein the different transmission directions comprise:

the terminal device serves as a data transmitting end, or,

the terminal equipment is used as a receiving end of the data.

3. The method of claim 2, wherein the data comprises at least one of:

service data adaptation protocol data unit SDAP PDU, service data adaptation protocol service data unit SDAP SDU, packet data convergence protocol data unit PDCP PDU, radio link control protocol data unit RLC PDU, and medium access control protocol data unit MAC PDU.

4. The method of claim 1, wherein the different transmission modes include a radio link control acknowledged mode RLC AM and a radio link control unacknowledged mode RLC UM.

5. The method of claim 1, wherein the terminal device uses different logical channels for side-link unicast communications in different transmission directions, comprising:

and the terminal equipment uses different logic channels for unicast communication of the side links in different transmission directions according to a first corresponding relation, wherein the first corresponding relation reflects the corresponding relation between the different logic channels and the different transmission directions.

6. The method of claim 5, wherein the first correspondence is at least one of:

the first corresponding relation configured by the network equipment, the first corresponding relation configured by the terminal equipment, the first corresponding relation indicated by an upper layer, and the first corresponding relation agreed by a protocol.

7. The method of claim 1, wherein the terminal device uses different logical channels for side-link unicast communications for different transmission modes, comprising:

and the terminal equipment uses different logic channels for unicast communication of the side links of the different transmission modes according to a second corresponding relation, wherein the second corresponding relation reflects the corresponding relation between the different logic channels and the different transmission modes.

8. The method of claim 7, wherein the second correspondence is at least one of:

9. The method according to claim 1, wherein the method further comprises:

And the terminal equipment selects a first logic channel from the first logic channel set to perform side link unicast communication.

10. The method according to claim 1, wherein the method further comprises:

the terminal equipment selects a first logic channel from a first logic channel set to perform side link unicast communication, wherein the first logic channel is used for controlling the side link unicast communication of an RLC mode aiming at a first wireless link, and the first RLC mode is RLC AM or RLC UM.

11. The method of claim 9, wherein the terminal device selecting a first logical channel from a first set of logical channels for sidelink unicast communication comprises:

the terminal equipment receives first indication information sent by network equipment, wherein the first indication information is used for indicating the terminal equipment to select an mth logical channel in the first logical channel set as the first logical channel, and m is a positive integer;

and the terminal equipment selects the first logic channel from the first logic channel set according to the first indication information to perform side link unicast communication.

12. The method according to claim 1, wherein the method further comprises:

The terminal equipment receives first information sent by opposite terminal equipment through PC5 RRC signaling, wherein the first information comprises an ID of a second logic channel, and the second logic channel is a logic channel used by the opposite terminal equipment for unicast communication of a side link;

and the terminal equipment selects a first logical channel from the logical channels except the second logical channel in the first logical channel set to perform side link unicast communication.

13. The method of claim 12, wherein the terminal device selecting a first logical channel from a first set of logical channels for side link unicast communications from among the logical channels other than the second logical channel, comprises:

the terminal equipment receives second indication information sent by network equipment, wherein the second indication information is used for indicating the terminal equipment to select an nth logical channel from logical channels except the second logical channel in the first logical channel set as the first logical channel, and n is a positive integer;

and the terminal equipment selects the first logical channel from the logical channels except the second logical channel in the first logical channel set according to the second indication information to perform side link unicast communication.

14. The method of claim 1, wherein if the second RLC mode is the same as the first RLC mode,

the terminal device selects a first logic channel from a first logic channel set according to the ID of the second logic channel to perform side link unicast communication aiming at a second RLC mode, and the terminal device comprises:

the terminal device selects the first logical channel from the first logical channel set to perform side link unicast communication for the second RLC mode.

15. The method of claim 14, wherein the identity of the first logical channel is the same as the identity of the second logical channel.

16. The method of claim 14, wherein the terminal device selecting the first logical channel from the first set of logical channels for side link unicast communication for the second RLC mode comprises:

the terminal equipment receives third indication information sent by the network equipment, wherein the third indication information is used for indicating the terminal equipment to select a q-th logical channel in the first logical channel set as the first logical channel, and q is a positive integer;

And the terminal equipment selects the first logical channel from the first logical channel set according to the third indication information to perform side link unicast communication aiming at the second RLC mode.

17. The method of claim 1, wherein if the second RLC mode is different from the first RLC mode,

the terminal device selects a first logical channel from the first logical channel set except the second logical channel to perform side link unicast communication for the second RLC mode.

18. The method according to any one of claims 9 to 17, further comprising:

the terminal equipment sends second information to the opposite terminal equipment through the side-link radio resource control PC5 RRC, wherein the second information comprises the identification ID of the first logic channel.

19. The method according to any one of claims 9 to 17, further comprising:

the terminal equipment sends first configuration information to opposite terminal equipment through PC5 RRC, wherein the first configuration information is the sending configuration information of the terminal equipment aiming at the first logic channel.

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

and the terminal equipment receives the first configuration information sent by the network equipment.

21. The method of claim 19, wherein the method further comprises:

the terminal equipment acquires a first mapping relation from system information of network equipment or from pre-configuration information, wherein the first mapping relation is a mapping relation between a quality of service (QoS) attribute and a sending configuration;

and the terminal equipment determines the first configuration information according to the QoS attribute information and the first mapping relation.

22. The method according to any one of claims 9 to 17, further comprising:

and the terminal equipment performs transmission configuration for a second logic channel according to the realization of the terminal equipment, wherein the second logic channel is a logic channel used for unicast communication of the side link by the opposite terminal equipment.

23. The method according to any one of claims 9 to 17, further comprising:

the terminal equipment receives second configuration information sent by the opposite terminal equipment, wherein the second configuration information is the sending configuration information of the opposite terminal equipment aiming at a second logic channel, and the second logic channel is a logic channel used by the opposite terminal equipment for unicast communication of a side link;

And the terminal equipment performs transmission configuration for the second logic channel according to the second configuration information.

24. The method of claim 23, wherein the method further comprises:

the terminal device sends third information to the network device, wherein the third information comprises the ID of the second logic channel and/or the second configuration information.

25. The method according to any one of claims 9 to 17, further comprising:

the terminal equipment receives fourth information sent by the network equipment, wherein the fourth information is used for configuring a sending parameter aiming at a second logic channel, and the second logic channel is a logic channel used by opposite terminal equipment for side link unicast communication;

and the terminal equipment performs transmission configuration for the second logic channel according to the fourth information.

26. The method according to any one of claims 9 to 17, further comprising:

the terminal device receives fourth information sent by the network device, wherein the fourth information comprises a sending configuration aiming at the second logic channel.

27. The method according to any one of claims 9 to 17, further comprising:

The terminal equipment acquires a second mapping relation from system information of network equipment or from pre-configuration information, wherein the second mapping relation is a mapping relation between QoS attributes and transmission configuration;

and the terminal equipment performs transmission configuration for the second logic channel according to the QoS attribute information and the second mapping relation.

28. A terminal device for side link unicast communication with another terminal device, the terminal device comprising:

a communication unit, configured to use different logical channels for side link unicast communication in different transmission directions, and/or use different logical channels for side link unicast communication in different transmission modes;

the communication unit is further configured to:

receiving first information sent by opposite terminal equipment through PC5 RRC signaling, wherein the first information comprises an ID of a second logic channel, and the second logic channel is a logic channel used by the opposite terminal equipment for unicast communication of a side link aiming at a first RLC mode;

selecting a first logical channel from a first logical channel set according to the ID of the second logical channel to perform side link unicast communication aiming at a second RLC mode; wherein, if the second RLC mode is different from the first RLC mode, the communication unit is specifically configured to: receiving fourth indication information sent by network equipment, wherein the fourth indication information is used for indicating the terminal equipment to select a p-th logical channel from logical channels except the second logical channel in the first logical channel set as the first logical channel, and p is a positive integer; and selecting the first logic channel from the first logic channel set according to the fourth indication information to perform side link unicast communication aiming at the second RLC mode.

29. The terminal device of claim 28, wherein the different transmission directions include:

the terminal device serves as a data transmitting end, or,

the terminal equipment is used as a receiving end of the data.

30. The terminal device of claim 29, wherein the data comprises at least one of:

31. The terminal device according to claim 28, wherein the different transmission modes include a radio link control acknowledged mode RLC AM and a radio link control unacknowledged mode RLC UM.

32. Terminal device according to claim 28, characterized in that the communication unit is specifically adapted to:

and according to a first corresponding relation, using different logic channels for unicast communication of the side links in different transmission directions, wherein the first corresponding relation reflects the corresponding relation between the different logic channels and the different transmission directions.

33. The terminal device of claim 32, wherein the first correspondence is at least one of:

34. Terminal device according to claim 28, characterized in that the communication unit is specifically adapted to:

35. The terminal device of claim 34, wherein the second correspondence is at least one of the following:

36. The terminal device of claim 28, wherein the communication unit is further configured to:

37. The terminal device of claim 28, wherein the communication unit is further configured to:

and selecting a first logic channel from the first logic channel set to perform side link unicast communication, wherein the first logic channel is used for controlling the side link unicast communication of an RLC mode aiming at a first wireless link, and the first RLC mode is RLC AM or RLC UM.

38. The terminal device according to claim 36, wherein the communication unit is specifically configured to:

39. The terminal device of claim 28, wherein the communication unit is further configured to:

receiving first information sent by opposite terminal equipment through PC5 RRC signaling, wherein the first information comprises an ID of a second logic channel, and the second logic channel is a logic channel used by the opposite terminal equipment for unicast communication of a side link;

And selecting a first logical channel from the logical channels except the second logical channel in the first logical channel set to perform side link unicast communication.

40. The terminal device of claim 39, wherein the communication unit is specifically configured to:

receiving second indication information sent by network equipment, wherein the second indication information is used for indicating the terminal equipment to select an nth logical channel from logical channels except the second logical channel in the first logical channel set as the first logical channel, and n is a positive integer;

41. The terminal device of claim 28, wherein, if the second RLC mode is the same as the first RLC mode,

the communication unit is specifically configured to:

and selecting the first logical channel from the first logical channel set for side link unicast communication for the second RLC mode.

42. The terminal device of claim 41, wherein the identity of the first logical channel is the same as the identity of the second logical channel.

43. The terminal device of claim 41, wherein the communication unit is specifically configured to:

receiving third indication information sent by network equipment, wherein the third indication information is used for indicating the terminal equipment to select a q-th logical channel in the first logical channel set as the first logical channel, and q is a positive integer;

and selecting the first logical channel from the first logical channel set according to the third indication information to perform side link unicast communication aiming at the second RLC mode.

44. The terminal device of claim 28, wherein, if the second RLC mode is different from the first RLC mode,

the communication unit is specifically configured to:

and selecting a first logical channel from the first logical channel set except the second logical channel to perform side link unicast communication aiming at the second RLC mode.

45. The terminal device according to any of the claims 36 to 44, characterized in that said communication unit is further adapted to send second information to a peer device via a side-uplink radio resource control, PC5, RRC, said second information comprising an identification, ID, of said first logical channel.

46. The terminal device according to any of the claims 36 to 44, wherein the communication unit is further configured to send first configuration information to a peer device through a PC5 RRC, the first configuration information being sending configuration information of the terminal device for the first logical channel.

47. The terminal device of claim 46, wherein the communication unit is further configured to receive the first configuration information sent by a network device.

48. The terminal device of claim 46, wherein the terminal device further comprises: a processing unit, wherein:

the communication unit is further configured to obtain a first mapping relationship from a system message of the network device or from pre-configuration information, where the first mapping relationship is a mapping relationship between a quality of service QoS attribute and a sending configuration;

the processing unit is configured to determine the first configuration information according to QoS attribute information and the first mapping relationship.

49. The terminal device according to any of the claims 36 to 44, characterized in that the terminal device further comprises:

and the processing unit is used for carrying out transmission configuration on a second logic channel according to the implementation of the processing unit, wherein the second logic channel is a logic channel used for side link unicast communication by the opposite terminal equipment.

50. The terminal device according to any of the claims 36 to 44, characterized in that the terminal device further comprises a processing unit,

the communication unit is further configured to receive second configuration information sent by the peer device, where the second configuration information is sending configuration information of the peer device for a second logical channel, and the second logical channel is a logical channel used by the peer device for unicast communication of a side link;

the processing unit is further configured to perform transmission configuration for the second logical channel according to the second configuration information.

51. The terminal device of claim 50, wherein the communication unit is further configured to send third information to a network device, the third information including an ID of the second logical channel and/or the second configuration information.

52. The terminal device according to any of the claims 36 to 44, characterized in that the terminal device further comprises a processing unit,

the communication unit is further configured to receive fourth information sent by the network device, where the fourth information is used to configure a sending parameter for a second logical channel, and the second logical channel is a logical channel used by the peer device for unicast communication of the side link;

And the processing unit is used for carrying out transmission configuration for the second logic channel according to the fourth information.

53. The terminal device according to any of the claims 36 to 44, wherein the communication unit is further configured to receive fourth information sent by a network device, the fourth information comprising a transmission configuration for the second logical channel.

54. The terminal device according to any of the claims 36 to 44, characterized in that the terminal device further comprises: the processing unit is used for processing the processed data,

the communication unit is further configured to obtain a second mapping relationship from a system message of the network device or from pre-configuration information, where the second mapping relationship is a mapping relationship between QoS attributes and a sending configuration;

and the processing unit is used for carrying out transmission configuration for the second logic channel according to the QoS attribute information and the second mapping relation.

55. A terminal device, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory, performing the method of any of claims 1 to 27.

56. An apparatus, comprising: a processor for calling and running a computer program from a memory, causing a device in which the apparatus is installed to perform the method of any one of claims 1 to 27.

57. A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 27.