A method and device for determining a sidelink logical channel identifier

Abstract

The present disclosure provides a method and apparatus for determining a sidelink logical channel identifier, which can be applied to mobile communication technology. The method comprises: determining a logical channel identifier associated with a primary path and a logical channel identifier associated with an auxiliary path corresponding to a sidelink radio bearer SLRB; wherein the logical channel associated with the primary path and the logical channel associated with the auxiliary path corresponding to the SLRB are mapped to different carriers or different carrier groups; and sending the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB to a second terminal device. Thus, when the PDCP multiplexing of the SLRB is activated, it can be ensured that the two data packets multiplexed by the PDCP are transmitted using different logical channels.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a method and device for determining a sidelink logical channel identifier. Background Art

[0002] In related technologies, sidelink communication has been introduced to support direct communication between terminal devices. Furthermore, packet data convergence protocol (PDCP) multiplexing involves sending a single packet repeatedly. This allows for repeated transmission, improving packet transmission reliability and reducing the latency of repeated transmissions, meeting high reliability and low latency requirements. However, ensuring that two PDCP-multiplexed packets are transmitted using different logical channels during sidelink communication remains a pressing issue. Summary of the Invention

[0003] An embodiment of a first aspect of the present disclosure provides a method for determining a sidelink logical channel identifier, which is applied to a first terminal device. The method includes:

[0004] Determine a logical channel identifier associated with a primary path and a logical channel identifier associated with an auxiliary path corresponding to a sidelink radio bearer SLRB; wherein the logical channel associated with the primary path and the logical channel associated with the auxiliary path corresponding to the SLRB are mapped to different carriers or different carrier groups;

[0005] The logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB are sent to the second terminal device.

[0006] A second aspect of the present disclosure provides another method for determining a sidelink logical channel identifier, which is applied to a network device. The method includes:

[0007] Determine a logical channel identifier associated with a primary path and a logical channel identifier associated with a secondary path corresponding to the SLRB; wherein the logical channel associated with the primary path and the logical channel associated with the secondary path corresponding to the SLRB are mapped to different carriers or different carrier groups;

[0008] Configuration information is sent to the first terminal device, wherein the configuration information includes the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB.

[0009] An embodiment of a third aspect of the present disclosure provides another method for determining a sidelink logical channel identifier, which is applied to a second terminal device. The method includes:

[0010] Receive the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB sent by the first terminal device; wherein the logical channel associated with the main path and the logical channel associated with the auxiliary path corresponding to the SLRB are mapped to different carriers or different carrier groups.

[0011] A fourth aspect of the present disclosure provides a communication device, including:

[0012] A processing module, configured to determine a logical channel identifier associated with a primary path and a logical channel identifier associated with an auxiliary path corresponding to a sidelink radio bearer SLRB; wherein the logical channel associated with the primary path and the logical channel associated with the auxiliary path corresponding to the SLRB are mapped to different carriers or different carrier groups;

[0013] The transceiver module is used to send the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB to the second terminal device.

[0014] A fifth aspect of the present disclosure provides another communication device, including:

[0015] A processing module, configured to determine a logical channel identifier associated with a primary path and a logical channel identifier associated with an auxiliary path corresponding to the SLRB; wherein the logical channel associated with the primary path and the logical channel associated with the auxiliary path corresponding to the SLRB are mapped to different carriers or different carrier groups;

[0016] A transceiver module is used to send configuration information to the first terminal device, wherein the configuration information includes the logical channel identifier associated with the main path corresponding to the SLRB and the logical channel identifier associated with the auxiliary path.

[0017] A sixth aspect of the present disclosure provides another communication device, including:

[0018] A transceiver module is used to receive the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB sent by the first terminal device; wherein the logical channel associated with the main path and the logical channel associated with the auxiliary path corresponding to the SLRB are mapped to different carriers or different carrier groups.

[0019] A seventh aspect of the present disclosure provides a communication device, which includes a processor. When the processor calls a computer program in a memory, the method described in the first aspect is executed.

[0020] An eighth aspect of the present disclosure provides another communication device, which includes a processor. When the processor calls a computer program in a memory, the method described in the second aspect is executed.

[0021] A ninth aspect of the present disclosure provides another communication device, which includes a processor. When the processor calls a computer program in a memory, the method described in the third aspect is executed.

[0022] An embodiment of the tenth aspect of the present disclosure provides a communication device, which includes a processor and a memory, in which a computer program is stored; the processor executes the computer program stored in the memory, so that the communication device executes the method described in the first aspect above.

[0023] An embodiment of the eleventh aspect of the present disclosure provides another communication device, which includes a processor and a memory, wherein the memory stores a computer program; the processor executes the computer program stored in the memory, so that the communication device executes the method described in the second aspect above.

[0024] The twelfth aspect embodiment of the present disclosure provides another communication device, which includes a processor and a memory, in which a computer program is stored; the processor executes the computer program stored in the memory so that the communication device executes the method described in the third aspect above.

[0025] A thirteenth aspect of the present disclosure provides another communication device, which includes a processor and an interface circuit. The interface circuit is used to receive code instructions and transmit them to the processor. The processor is used to run the code instructions to enable the device to execute the method described in the first aspect above.

[0026] An embodiment of the fourteenth aspect of the present disclosure provides another communication device, which includes a processor and an interface circuit. The interface circuit is used to receive code instructions and transmit them to the processor. The processor is used to run the code instructions to enable the device to execute the method described in the second aspect above.

[0027] A fifteenth aspect of the present disclosure provides another communication device, which includes a processor and an interface circuit. The interface circuit is used to receive code instructions and transmit them to the processor. The processor is used to run the code instructions to enable the device to execute the method described in the third aspect above.

[0028] An embodiment of the sixteenth aspect of the present disclosure provides a system for determining a sidelink logical channel identifier, the system comprising the communication device described in the fourth aspect, the communication device described in the fifth aspect, and the configuration information transmission device described in the sixth aspect, or the system comprising the communication device described in the seventh aspect, the communication device described in the eighth aspect, and the communication device described in the ninth aspect, or the system comprising the communication device described in the tenth aspect, the communication device described in the eleventh aspect, and the communication device described in the twelfth aspect, or the system comprising the communication device described in the thirteenth aspect, the communication device described in the fourteenth aspect, and the communication device described in the fifteenth aspect.

[0029] A seventeenth aspect of the present disclosure provides a computer-readable storage medium for storing instructions for the above-mentioned communication device. When the instructions are executed, the communication device executes the method described in the first aspect.

[0030] An eighteenth aspect embodiment of the present disclosure provides another computer-readable storage medium for storing instructions for the above-mentioned communication device, and when the instructions are executed, the communication device executes the method described in the second aspect.

[0031] The nineteenth aspect embodiment of the present disclosure provides another computer-readable storage medium for storing instructions for the above-mentioned communication device, and when the instructions are executed, the communication device executes the method described in the second aspect.

[0032] The twentieth aspect of the present disclosure further provides a computer program product comprising a computer program, which, when executed on a computer, enables the computer to execute the method described in the first aspect above.

[0033] The twenty-first aspect embodiment of the present disclosure also provides another computer program product including a computer program, which, when executed on a computer, enables the computer to execute the method described in the second aspect above.

[0034] The twenty-second aspect embodiment of the present disclosure also provides another computer program product including a computer program, which, when executed on a computer, enables the computer to execute the method described in the second aspect above.

[0035] The twenty-third embodiment of the present disclosure provides a chip system, which includes at least one processor and an interface for supporting a communication device to implement the functions involved in the first aspect, for example, determining or processing at least one of the data and information involved in the above method. In one possible design, the chip system also includes a memory, which is used to store computer programs and data necessary for the communication device. The chip system can be composed of a chip, or it can include a chip and other discrete devices.

[0036] The embodiment of the twenty-fourth aspect of the present disclosure further provides another chip system, which includes at least one processor and an interface for supporting the communication device to implement the functions involved in the second aspect, for example, determining or processing at least one of the data and information involved in the above method. In one possible design, the chip system also includes a memory, which is used to store computer programs and data necessary for the communication device. The chip system can be composed of a chip or can include a chip and other discrete devices.

[0037] The twenty-fifth aspect of the present disclosure further provides a computer program, which, when executed on a computer, enables the computer to execute the method described in the first aspect above.

[0038] The twenty-sixth aspect embodiment of the present disclosure also provides another computer program, which, when executed on a computer, enables the computer to execute the method described in the second aspect above.

[0039] The twenty-seventh embodiment of the present disclosure further provides another computer program, which, when executed on a computer, enables the computer to execute the method described in the third aspect above. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the background technology, the drawings required for use in the embodiments of the present disclosure or the background technology will be described below.

[0041] Figure 1 A schematic diagram of the architecture of a communication system provided by an embodiment of the present disclosure;

[0042] Figure 2 A schematic diagram of a flow chart of a method for determining a sidelink logical channel identifier provided by an embodiment of the present disclosure;

[0043] Figure 3 A schematic flow chart of another method for determining a sidelink logical channel identifier provided by an embodiment of the present disclosure;

[0044] Figure 4 A schematic flow chart of another method for determining a sidelink logical channel identifier provided by an embodiment of the present disclosure;

[0045] Figure 5 A schematic flow chart of another method for determining a sidelink logical channel identifier provided by an embodiment of the present disclosure;

[0046] Figure 6 A schematic flow chart of another method for determining a sidelink logical channel identifier provided by an embodiment of the present disclosure;

[0047] Figure 7A schematic flow chart of another method for determining a sidelink logical channel identifier provided by an embodiment of the present disclosure;

[0048] Figure 8 A schematic flow chart of another method for determining a sidelink logical channel identifier provided by an embodiment of the present disclosure;

[0049] Figure 9 A schematic flow chart of another method for determining a sidelink logical channel identifier provided by an embodiment of the present disclosure;

[0050] Figure 10 A schematic flow chart of another method for determining a sidelink logical channel identifier provided by an embodiment of the present disclosure;

[0051] Figure 11 A schematic flow chart of another method for determining a sidelink logical channel identifier provided by an embodiment of the present disclosure;

[0052] Figure 12 A schematic flow chart of another method for determining a sidelink logical channel identifier provided by an embodiment of the present disclosure;

[0053] Figure 13 A schematic structural diagram of a communication device provided in an embodiment of the present disclosure;

[0054] Figure 14 A schematic structural diagram of another communication device provided in an embodiment of the present disclosure;

[0055] Figure 15 A schematic diagram of the structure of a chip provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0056] In order to better understand a method for determining a sidelink logical channel identifier disclosed in an embodiment of the present disclosure, the communication system to which the embodiment of the present disclosure is applicable is first described below.

[0057] See Figure 1 , Figure 1 This is a schematic diagram of the architecture of a communication system provided by an embodiment of the present disclosure. The communication system may include but is not limited to a network device and a terminal device. Figure 1 The number and form of devices shown are for example only and do not constitute a limitation on the embodiments of the present disclosure. In actual applications, two or more network devices and two or more terminal devices may be included. Figure 1 The communication system shown includes a network device 11 and a terminal device 12 as an example.

[0058] It should be noted that the technical solutions of the embodiments of the present disclosure can be applied to various communication systems, such as long-term evolution (LTE) systems, fifth-generation (5G) mobile communication systems, 5G new radio (NR) systems, or other future new mobile communication systems.

[0059] The network device 11 in the embodiment of the present disclosure is an entity on the network side for transmitting or receiving signals. For example, the network device 101 can be an evolved NodeB (eNB), a transmission point (TRP), a next generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system. The embodiment of the present disclosure does not limit the specific technology and specific device form adopted by the network device. The network device provided in the embodiment of the present disclosure can be composed of a centralized unit (CU) and a distributed unit (DU), wherein the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the network device, such as the base station, and the functions of some protocol layers are placed in the CU for centralized control, and the functions of the remaining part or all of the protocol layers are distributed in the DU, and the DU is centrally controlled by the CU.

[0060] The terminal device 12 in the embodiment of the present disclosure is an entity on the user side for receiving or transmitting signals, such as a mobile phone. The terminal device can also be called a terminal device (terminal), user equipment (UE), mobile station (MS), mobile terminal device (MT), etc. The terminal device can be a car with communication function, a smart car, a mobile phone, a wearable device, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in smart city (smart city), a wireless terminal device in smart home (smart home), etc. The embodiment of the present disclosure does not limit the specific technology and specific device form adopted by the terminal device.

[0061] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution provided by the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution provided by the embodiment of the present disclosure is also applicable to similar technical problems.

[0062] Related technologies have introduced sidelink communication to support direct communication between terminal devices. PDCP multiplexing involves retransmitting a data packet. This allows for repeated transmission, improving packet reliability and reducing the latency of repeated transmissions, meeting high reliability and low latency requirements. However, ensuring that two PDCP multiplexed data packets are transmitted using different logical channels during sidelink communication remains a pressing issue.

[0063] In the present disclosure, the first terminal device can determine the main path associated logical channel identifier and the auxiliary path associated logical channel identifier corresponding to the side link radio bearer (SLRB), wherein the main path associated logical channel and the auxiliary path associated logical channel are mapped to different carriers or different carrier groups, and the main path associated logical channel identifier and the auxiliary path associated logical channel identifier corresponding to the SLRB are sent to the second terminal device, thereby ensuring that the two data packets multiplexed by PDCP are transmitted using different logical channels.

[0064] A method and apparatus for determining a sidelink logical channel identifier provided by the present disclosure will be described in detail below with reference to the accompanying drawings.

[0065] See Figure 2 , Figure 2 This is a flow chart of a method for determining a sidelink logical channel identifier provided by an embodiment of the present disclosure, the method being executed by a first terminal device. Figure 2 As shown, the method may include but is not limited to the following steps:

[0066] Step 201: Determine the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB.

[0067] The logical channel identifier associated with the primary path may refer to the identifier of the logical channel used to transmit the original PDCP data packet, and the logical channel identifier associated with the secondary path may refer to the identifier of the logical channel used to transmit the copied PDCP data packet.

[0068] The logical channel associated with the primary path and the logical channel associated with the secondary path are mapped to different carriers or different carrier groups.

[0069] In the present disclosure, the logical channel associated with the main path and the logical channel associated with the auxiliary path corresponding to each SLRB can be determined. Since the identifier can represent the uniqueness of the logical channel, the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to each SLRB can also be determined.

[0070] In the present disclosure, the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB can be directly determined by the first terminal device, or can be determined by the first terminal device based on the configuration information sent by the network device, and the configuration information carries the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB.

[0071] Optionally, the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB may also be pre-configured.

[0072] Step 202: Send the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB to the second terminal device.

[0073] Among them, the second terminal device can be a terminal device that establishes a unicast connection with the first terminal device, or the second terminal device can also be a terminal device in the group where the second terminal device is located, or the second terminal device can also be a terminal device that receives broadcast services. This disclosure does not limit this.

[0074] In the present disclosure, the first terminal device can send the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB to the second terminal device to notify the second terminal device.

[0075] In an embodiment of the present disclosure, the first terminal device can determine the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB, wherein the logical channel associated with the main path and the logical channel associated with the auxiliary path corresponding to the SLRB are mapped to different carriers or different carrier groups, and the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB are sent to the second terminal device. Thus, when the PDCP multiplexing of the SLRB is activated, it can be ensured that the two data packets of the PDCP multiplexing are transmitted using different logical channels.

[0076] See Figure 3 , Figure 3 This is a flow chart of another method for determining a sidelink logical channel identifier provided by an embodiment of the present disclosure, which is executed by a first terminal device. Figure 3 As shown, the method may include but is not limited to the following steps:

[0077] Step 301: Select a logical channel identifier associated with a primary path corresponding to the SLRB from existing logical channel identifiers, and select a logical channel identifier associated with a secondary path corresponding to the SLRB from reserved logical channel identifiers.

[0078] In the present disclosure, the first terminal device can select the logical channel associated with the main path corresponding to the SLRB from the existing logical channels, and select the logical channel associated with the auxiliary path corresponding to the SLRB from the reserved logical channels. Since the identifier can represent the uniqueness of the logical channel, the first terminal device can select the logical channel identifier associated with the main path corresponding to the SLRB from the existing logical channel identifiers, and select the logical channel identifier associated with the auxiliary path corresponding to the SLRB from the reserved logical channel identifiers.

[0079] Among them, the logical channel associated with the main path corresponding to the SLRB and the logical channel associated with the auxiliary path are mapped to different carriers or different carrier groups. The logical channel identifiers associated with the main path corresponding to different SLRBs are different, and the logical channel identifiers associated with the auxiliary path corresponding to different SLRBs are different.

[0080] For example, the existing logical channels are identified as 1 to 10, and the reserved logical channels are identified as 11 to 20. The logical channel identified as 1 can be used as the logical channel associated with the main path corresponding to a certain SLRB, and the logical channel identified as 11 can be used as the logical channel associated with the auxiliary path corresponding to a certain SLRB. The logical channel identified as 2 can be used as the logical channel associated with the main path corresponding to another SLRB, and the logical channel identified as 12 can be used as the logical channel associated with the auxiliary path corresponding to another SLRB.

[0081] It should be noted that the above-mentioned existing logical channel identifiers, reserved logical channel identifiers, etc. are only examples and should not be regarded as limitations of the present disclosure.

[0082] Step 302: Send the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB to the second terminal device.

[0083] In the present disclosure, the second terminal device can be a terminal device that establishes a PC5-radio resource control (PC5-RRC) unicast connection with the first terminal device. Then the first terminal device can send the main path associated logical channel identifier and the auxiliary path associated logical channel identifier corresponding to the SLRB to the second terminal device based on PC5-RRC signaling, or it can also send the main path associated logical channel identifier and the auxiliary path associated logical channel identifier corresponding to the SLRB to the second terminal device through the sidelink media access control layer control element (SL MAC CE).

[0084] Among them, PC5-RRC signaling can be RRC reconfiguration sidelink signaling RRCReconfigurationSidelink signaling.

[0085] Optionally, the SL MAC CE may carry logical channel identifiers associated with the primary path and logical channel identifiers associated with the auxiliary path corresponding to one or more SLRBs.

[0086] Therefore, for unicast services, the first terminal device can notify the second terminal device SLRB that establishes a PC5-RRC unicast connection with the first terminal device of the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path through PC5-RRC signaling or SL MAC CE.

[0087] Optionally, the second terminal device may also be a terminal device within the group of the first terminal device, or the second terminal device may be a terminal device receiving broadcast services. In this case, the first terminal device may send the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB to the second terminal device via the SL MAC CE.

[0088] Optionally, the SL MAC CE may carry logical channel identifiers associated with the primary path and logical channel identifiers associated with the auxiliary path corresponding to one or more SLRBs.

[0089] Therefore, for multicast or broadcast services, the first terminal device can carry the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB through the SL MAC CE to notify other terminal devices in the group or the terminal device receiving the broadcast service.

[0090] See Figure 4 , Figure 4 This is a flow chart of another method for determining a sidelink logical channel identifier provided by an embodiment of the present disclosure, which is executed by a first terminal device. Figure 4 As shown, the method may include but is not limited to the following steps:

[0091] Step 401: Determine the logical channel identifier associated with the primary path and the logical channel identifier associated with the secondary path corresponding to the SLRB according to the hybrid automatic repeat request HARQ attribute of the logical channel.

[0092] The hybrid automatic repeat request (HARQ) attribute may include HARQ enablement and HARQ disablement.

[0093] In the present disclosure, the logical channel associated with the main path corresponding to the SLRB and the logical channel associated with the auxiliary path are mapped to different carriers or different carrier groups, the logical channel identifiers associated with the main path corresponding to different SLRBs are different, and the logical channel identifiers associated with the auxiliary path corresponding to different SLRBs are different. In the present disclosure, the first terminal device can determine the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB based on the HARQ attributes of the logical channel to ensure that the HARQ attributes of the logical channel associated with the main path and the HARQ attributes of the logical channel identifier associated with the auxiliary path are the same.

[0094] Among them, the HARQ attributes of the logical channel associated with the main path and the HARQ attributes of the logical channel identifier associated with the auxiliary path are the same. The HARQ attributes of the logical channel associated with the main path and the HARQ attributes of the logical channel associated with the auxiliary path can be both HARQ enabled, or the HARQ attributes of the logical channel associated with the main path and the HARQ attributes of the logical channel associated with the auxiliary path can be both HARQ disabled.

[0095] Optionally, the HARQ attribute of the logical channel associated with the main path is the same as the HARQ attribute of the logical channel identifier associated with the auxiliary path, or the HARQ attribute of the logical channel associated with the main path is default, while the HARQ attribute of the logical channel associated with the auxiliary path is HARQ enabled or HARQ disabled, or the HARQ attribute of the logical channel associated with the auxiliary path is default.

[0096] Step 402: Send the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB to the second terminal device.

[0097] In the present disclosure, step 402 can be implemented in any of the ways in the embodiments of the present disclosure, which is not limited in the embodiments of the present disclosure and will not be described in detail.

[0098] In the embodiment of the present disclosure, the first terminal device can determine the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB based on the HARQ attribute of the logical channel, and send the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB to the second terminal device. In this way, it can be ensured that the logical channel associated with the main path and the logical channel associated with the auxiliary path have the same HARQ attribute.

[0099] See Figure 5 , Figure 5 This is a flow chart of another method for determining a sidelink logical channel identifier provided by an embodiment of the present disclosure, which is executed by a first terminal device. Figure 5 As shown, the method may include but is not limited to the following steps:

[0100] Step 501: Receive configuration information sent by a network device.

[0101] In the present disclosure, the network device can determine the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB, and send configuration information to the first terminal device. The configuration information may include the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB.

[0102] In the present disclosure, the configuration information may be radio bearer configuration information, that is, the radio bearer configuration information carries the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB.

[0103] In the present disclosure, the logical channels associated with the primary path and the logical channels associated with the secondary path corresponding to the SLRB are mapped to different carriers or different carrier groups.

[0104] Step 502: Determine the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB according to the configuration information.

[0105] In the present disclosure, the first terminal device can determine the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB based on the configuration information.

[0106] Step 503: Send the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB to the second terminal device through PC5-RRC signaling.

[0107] Among them, the second terminal device can be a terminal device that establishes a PC5-RRC unicast connection with the first terminal device.

[0108] In the present disclosure, the first terminal device can send the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB to the second terminal device through PC5-RRC signaling to notify the second terminal device of the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB.

[0109] Optionally, the first terminal device may also send the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB to the second terminal device through the SL MAC CE.

[0110] Optionally, the SL MAC CE may carry logical channel identifiers associated with the primary path and logical channel identifiers associated with the auxiliary path corresponding to one or more SLRBs.

[0111] In the embodiment of the present disclosure, the first terminal device can receive the configuration information sent by the network device, and determine the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB based on the configuration information, and send the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB to the second terminal device that establishes a unicast connection with the first terminal device through PC5-RRC signaling or SL MAC CE. In this way, for unicast services, it can be ensured that the two data packets multiplexed by PDCP are transmitted using different logical channels.

[0112] See Figure 6 , Figure 6 This is a flow chart of another method for determining a sidelink logical channel identifier provided by an embodiment of the present disclosure, which is executed by a first terminal device. Figure 6 As shown, the method may include but is not limited to the following steps:

[0113] Step 601: Receive configuration information sent by a network device.

[0114] Step 602: Determine the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB according to the configuration information.

[0115] In the present disclosure, steps 601 and 602 may be implemented in any of the embodiments of the present disclosure, and the embodiments of the present disclosure do not limit this and will not be described in detail.

[0116] Step 603: Send the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB to the second terminal device through the SL MAC CE.

[0117] The second terminal device may be a terminal device in the group where the first terminal device is located, or the second terminal device may be a terminal device that receives a broadcast service.

[0118] In the present disclosure, for multicast or broadcast services, the first terminal device can send the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB to other terminal devices in the group or terminal devices receiving broadcast services through the SL MAC CE, so as to notify other terminal devices in the group or terminal devices receiving broadcast services of the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB.

[0119] In an embodiment of the present disclosure, for multicast or broadcast services, a first terminal device may receive configuration information sent by a network device, determine the logical channel identifier associated with the primary path and the logical channel identifier associated with the secondary path corresponding to the SLRB based on the configuration information, and send the information to terminal devices in the group or terminal devices receiving broadcast services via the SL MAC CE. Thus, for multicast or broadcast services, it can be ensured that two data packets multiplexed by PDCP are transmitted using different logical channels.

[0120] See Figure 7 , Figure 7 This is a flow chart of another method for determining a sidelink logical channel identifier provided by an embodiment of the present disclosure, which is executed by a network device. Figure 7 As shown, the method may include but is not limited to the following steps:

[0121] Step 701: Determine the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB.

[0122] The logical channel associated with the primary path and the logical channel associated with the secondary path are mapped to different carriers or different carrier groups.

[0123] In the present disclosure, the network device may select a logical channel identifier associated with the primary path from existing logical channel identifiers, and select a logical channel identifier associated with the auxiliary path from reserved logical channel identifiers.

[0124] Optionally, the network device may also determine the logical channel identifier associated with the primary path and the logical channel identifier associated with the secondary path corresponding to the SLRB based on the HARQ attribute of the logical channel. The HARQ attribute of the logical channel may include HARQ enablement and HARQ disablement.

[0125] Step 702: Send configuration information to the first terminal device, wherein the configuration information includes a logical channel identifier associated with the primary path and a logical channel identifier associated with the auxiliary path corresponding to the SLRB.

[0126] The configuration information may be radio bearer configuration information, that is, the radio bearer configuration information carries a logical channel identifier associated with the primary path and a logical channel identifier associated with the secondary path corresponding to the SLRB.

[0127] In the present disclosure, the network device can send wireless bearer configuration information to the first terminal device, carrying the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB, and notify the first terminal device of the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB through the wireless bearer configuration information.

[0128] In an embodiment of the present disclosure, a network device can determine the logical channel identifier associated with the primary path and the logical channel identifier associated with the secondary path corresponding to the SLRB, and send configuration information to the first terminal device, wherein the configuration information includes the logical channel identifier associated with the primary path and the logical channel identifier associated with the secondary path corresponding to the SLRB. Thus, the first terminal device can determine the logical channel identifier associated with the primary path and the logical channel identifier associated with the secondary path corresponding to the SLRB based on the configuration information, thereby ensuring that the two data packets multiplexed by the PDCP are transmitted using different logical channels.

[0129] See Figure 8 , Figure 8 This is a flow chart of another method for determining a sidelink logical channel identifier provided by an embodiment of the present disclosure, which is executed by a network device. Figure 8 As shown, the method may include but is not limited to the following steps:

[0130] Step 801: Select a logical channel identifier associated with a primary path corresponding to the SLRB from existing logical channel identifiers, and select a logical channel identifier associated with an auxiliary path corresponding to the SLRB from reserved logical channel identifiers.

[0131] Among them, the logical channel identifiers associated with the main paths corresponding to different SLRBs are different, and the logical channel identifiers associated with the auxiliary paths corresponding to different SLRBs are different.

[0132] In the present disclosure, you can refer to the method in which the first terminal device determines the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path based on the existing logical channel identifier and the reserved channel identifier, so it will not be repeated here.

[0133] Step 802: Send configuration information to the first terminal device, wherein the configuration information includes a logical channel identifier associated with the primary path and a logical channel identifier associated with the auxiliary path corresponding to the SLRB.

[0134] In the present disclosure, step 802 can be implemented in any of the ways in the embodiments of the present disclosure, and the embodiments of the present disclosure do not limit this and will not be described in detail.

[0135] In the disclosed embodiment, the network device may select a logical channel identifier associated with the primary path corresponding to the SLRB from the existing logical channel identifiers, select a logical channel identifier associated with the secondary path corresponding to the SLRB from the reserved logical channel identifiers, and send configuration information to the first terminal device, wherein the configuration information includes the logical channel identifier associated with the primary path corresponding to the SLRB and the logical channel identifier associated with the secondary path. In this way, it can be ensured that the two data packets multiplexed by PDCP are transmitted using different logical channels.

[0136] See Figure 9 , Figure 9 This is a flow chart of another method for determining a sidelink logical channel identifier provided by an embodiment of the present disclosure, which is executed by a network device. Figure 9 As shown, the method may include but is not limited to the following steps:

[0137] Step 901: Determine the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB according to the HARQ attribute of the logical channel.

[0138] In the present disclosure, you can refer to the method in which the first terminal device determines the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB based on the HARQ attribute of the logical channel, so it will not be repeated here.

[0139] Step 902: Send configuration information to the first terminal device, wherein the configuration information includes a logical channel identifier associated with the primary path and a logical channel identifier associated with the auxiliary path corresponding to the SLRB.

[0140] In the present disclosure, step 902 can be implemented in any of the ways in the embodiments of the present disclosure, and the embodiments of the present disclosure do not limit this and will not be described in detail.

[0141] In an embodiment of the present disclosure, the network device can determine the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB based on the HARQ attribute of the logical channel, and send configuration information to the first terminal device, wherein the configuration information includes the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB. In this way, it can be ensured that the logical channel associated with the primary path and the logical channel associated with the auxiliary path have the same HARQ attribute.

[0142] Optionally, for multicast or broadcast services, the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB can be specified in the protocol. When the PDCP multiplexing of a certain SLRB of the terminal device is activated, two PDCP multiplexed data packets can be transmitted according to the logical channel associated with the main path and the logical channel associated with the auxiliary path corresponding to the SLRB specified in the protocol.

[0143] Among them, the logical channel identifier associated with the main path corresponding to SLRB in the protocol can be selected from the logical channel identifiers associated with the main path reserved specifically for multicast or broadcast services in the existing logical channel identifiers, and the logical channel identifier associated with the auxiliary path corresponding to SLRB can be selected from the same number of logical channel identifiers associated with the auxiliary path reserved specifically for multicast or broadcast services in the reserved logical channel identifiers.

[0144] See Figure 10 , Figure 10 This is a flow chart of another method for determining a sidelink logical channel identifier provided by an embodiment of the present disclosure, which is executed by a second terminal device. Figure 10 As shown, the method may include but is not limited to the following steps:

[0145] Step 1001: Receive the logical channel identifier associated with the primary path and the logical channel identifier associated with the secondary path corresponding to the SLRB sent by the first terminal device.

[0146] The logical channel associated with the primary path and the logical channel associated with the secondary path are mapped to different carriers or different carrier groups.

[0147] In the present disclosure, the second terminal device can be a terminal device that establishes a unicast connection with the first terminal device, or the second terminal device can be a terminal device in the group where the second terminal device is located, or the second terminal device can be a terminal device that receives broadcast services. This disclosure does not limit this.

[0148] In the present disclosure, the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB can be directly determined by the first terminal device, or can be determined by the first terminal device based on the configuration information sent by the network device, and the configuration information carries the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB.

[0149] Optionally, the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB may also be pre-configured.

[0150] In an embodiment of the present disclosure, the second terminal device can receive the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB sent by the first terminal device. Thus, the second terminal device can obtain the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB notified by the first terminal device, so that when the PDCP multiplexing of the SLRB is activated, it can be ensured that the two data packets of PDCP multiplexing are transmitted on different logical channels.

[0151] See Figure 11 , Figure 11 This is a flow chart of another method for determining a sidelink logical channel identifier provided by an embodiment of the present disclosure, which is executed by a second terminal device. Figure 11 As shown, the method may include but is not limited to the following steps:

[0152] Step 1101: Receive the logical channel identifier associated with the primary path and the logical channel identifier associated with the secondary path corresponding to the SLRB sent by the first terminal device through PC5-RRC signaling.

[0153] Among them, the second terminal device can be a terminal device that establishes a PC5-RRC unicast connection with the first terminal device.

[0154] Optionally, the PC5-RRC signaling may be RRC reconfiguration sidelink signaling RRCReconfigurationSidelink signaling.

[0155] Optionally, the first terminal device may also send the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB to the second terminal device through the SL MAC CE.

[0156] Optionally, the SL MAC CE may carry logical channel identifiers associated with the primary path and logical channel identifiers associated with the auxiliary path corresponding to one or more SLRBs.

[0157] In the present disclosure, for the explanation of the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB, please refer to the above embodiments and will not be repeated here.

[0158] In the disclosed embodiment, a second terminal device that establishes a PC5-RRC unicast connection with a first terminal device can receive the logical channel identifier associated with the primary path and the logical channel identifier associated with the secondary path corresponding to the SLRB sent by the first terminal device via PC5-RRC signaling or SL MAC CE. Thus, for unicast services, it can be ensured that the two data packets multiplexed by PDCP are transmitted using different logical channels.

[0159] See Figure 12 , Figure 12 This is a flow chart of another method for determining a sidelink logical channel identifier provided by an embodiment of the present disclosure, which is executed by a second terminal device. Figure 12 As shown, the method may include but is not limited to the following steps:

[0160] Step 1201: Receive the logical channel identifier associated with the primary path and the logical channel identifier associated with the secondary path corresponding to the SLRB sent by the first terminal device through the SL MAC CE.

[0161] In the present disclosure, the second terminal device may be a terminal device in the group where the first terminal device is located, or the second terminal device may be a terminal device that receives a broadcast service.

[0162] Optionally, the SL MAC CE may carry logical channel identifiers associated with the primary path and logical channel identifiers associated with the auxiliary path corresponding to one or more SLRBs.

[0163] In the present disclosure, for the explanation of the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB, please refer to the above embodiments and will not be repeated here.

[0164] In the embodiment of the present disclosure, a second terminal device in the group to which the first terminal device belongs, or a second terminal device receiving a broadcast service, can receive the logical channel identifier associated with the primary path and the logical channel identifier associated with the secondary path corresponding to the SLRB sent by the first terminal device via the SL MAC CE. Thus, for multicast or broadcast services, it can be ensured that two data packets multiplexed by PDCP are transmitted using different logical channels.

[0165] See Figure 13 , Figure 13 A schematic structural diagram of a communication device provided in an embodiment of the present disclosure. Figure 13 The communication device 1300 shown may include a processing module 1301 and a transceiver module 1302. The transceiver module 1302 may include a sending module and / or a receiving module, the sending module is used to implement a sending function, and the receiving module is used to implement a receiving function. The transceiver module 1302 can implement the sending function and / or the receiving function.

[0166] It is understandable that the communication device 1300 may be a first terminal device, or a device in the first terminal device, or a device that can be used in conjunction with the first terminal device.

[0167] The communication device 1300 is on the first terminal device side, wherein:

[0168] The processing module 1301 is configured to determine a logical channel identifier associated with a primary path and a logical channel identifier associated with an auxiliary path corresponding to a sidelink radio bearer SLRB; wherein the logical channel associated with the primary path and the logical channel associated with the auxiliary path corresponding to the SLRB are mapped to different carriers or different carrier groups;

[0169] The transceiver module 1302 is used to send the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB to the second terminal device.

[0170] Optionally, the processing module 1301 is configured to:

[0171] Select the logical channel identifier associated with the main path corresponding to the SLRB from the existing logical channel identifiers, and select the logical channel identifier associated with the auxiliary path corresponding to the SLRB from the reserved logical channel identifiers; wherein, the logical channel identifiers associated with the main path corresponding to different SLRBs are different, and the logical channel identifiers associated with the auxiliary path corresponding to different SLRBs are different.

[0172] Optionally, the processing module 1301 is configured to:

[0173] According to the hybrid automatic repeat request HARQ attribute of the logical channel, the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB are determined.

[0174] Optionally, the HARQ attributes of the logical channel associated with the main path and the HARQ attributes of the logical channel associated with the auxiliary path are both HARQ enabled, or the HARQ attributes of the logical channel associated with the main path and the HARQ attributes of the logical channel associated with the auxiliary path are both HARQ disabled.

[0175] Optionally, the HARQ attribute of the logical channel associated with the primary path is default, the HARQ attribute of the logical channel associated with the auxiliary path is HARQ enabled or HARQ disabled, or the HARQ attribute of the logical channel associated with the auxiliary path is default.

[0176] Optionally, the transceiver module 1302 is configured to receive configuration information sent by a network device;

[0177] The processing module 1301 is configured to determine, according to the configuration information, a logical channel identifier associated with the primary path and a logical channel identifier associated with the auxiliary path corresponding to the SLRB.

[0178] Optionally, the configuration information is radio bearer configuration information.

[0179] Optionally, the transceiver module 1302 is configured to:

[0180] The logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB are sent to the second terminal device through PC5-RRC signaling, wherein the second terminal device is a terminal device that establishes a PC5-RRC unicast connection with the first terminal device.

[0181] Optionally, the transceiver module 1302 is configured to:

[0182] The logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB are sent to the second terminal device through the SL MAC CE, wherein the second terminal device is a terminal device that establishes a PC5-RRC unicast connection with the first terminal device.

[0183] Optionally, the transceiver module 1302 is configured to:

[0184] The logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB are sent to the second terminal device through the SL MAC CE, wherein the second terminal device is a terminal device in the group where the first terminal device is located, or the second terminal device is a terminal device receiving broadcast services.

[0185] In the present disclosure, the first terminal device can determine the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB, wherein the logical channel associated with the main path and the logical channel associated with the auxiliary path corresponding to the SLRB are mapped to different carriers or different carrier groups, and the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB are sent to the second terminal device. Thus, when the PDCP multiplexing of the SLRB is activated, it can be ensured that the two data packets of the PDCP multiplexing are transmitted using different logical channels.

[0186] It is understandable that the communication device 1300 may be a network device, a device in a network device, or a device that can be used in conjunction with a network device.

[0187] The communication device 1300 is on the network device side, wherein:

[0188] Processing module 1301 is configured to determine a logical channel identifier associated with a primary path and a logical channel identifier associated with a secondary path corresponding to the SLRB; wherein the logical channel associated with the primary path and the logical channel associated with the secondary path corresponding to the SLRB are mapped to different carriers or different carrier groups;

[0189] The transceiver module 1302 is used to send configuration information to the first terminal device, wherein the configuration information includes the logical channel identifier associated with the main path corresponding to the SLRB and the logical channel identifier associated with the auxiliary path.

[0190] Optionally, the processing module 1301 is configured to:

[0191] Select the logical channel identifier associated with the main path corresponding to the SLRB from the existing logical channel identifiers, and select the logical channel identifier associated with the auxiliary path corresponding to the SLRB from the reserved logical channel identifiers; wherein, the logical channel identifiers associated with the main path corresponding to different SLRBs are different, and the logical channel identifiers associated with the auxiliary path corresponding to different SLRBs are different.

[0192] Optionally, the processing module 1301 is configured to:

[0193] According to the hybrid automatic repeat request HARQ attribute of the logical channel, the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB are determined.

[0194] Optionally, the HARQ attributes of the logical channel associated with the main path and the HARQ attributes of the logical channel associated with the auxiliary path are both HARQ enabled, or the HARQ attributes of the logical channel associated with the main path and the HARQ attributes of the logical channel associated with the auxiliary path are both HARQ disabled.

[0195] Optionally, the HARQ attribute of the logical channel associated with the primary path is default, the HARQ attribute of the logical channel associated with the auxiliary path is HARQ enabled or HARQ disabled, or the HARQ attribute of the logical channel associated with the auxiliary path is default.

[0196] In the present disclosure, the network device can determine the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB, and send configuration information to the first terminal device, wherein the configuration information includes the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB. Thus, the first terminal device can determine the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB based on the configuration information, thereby ensuring that the two data packets multiplexed by PDCP are transmitted using different logical channels.

[0197] It is understandable that the communication device 1300 may be a second terminal device, or a device in the second terminal device, or a device that can be used in conjunction with the second terminal device.

[0198] The communication device 1300 is on the second terminal device side, wherein:

[0199] The transceiver module 1302 is used to receive the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB sent by the first terminal device; wherein the logical channel associated with the main path and the logical channel associated with the auxiliary path corresponding to the SLRB are mapped to different carriers or different carrier groups.

[0200] Optionally, the transceiver module 1302 is configured to:

[0201] Receive the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB sent by the first terminal device through PC5-RRC signaling, wherein the second terminal device is a terminal device that establishes a PC5-RRC unicast connection with the first terminal device.

[0202] Optionally, the transceiver module 1302 is configured to:

[0203] Receive the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB sent by the first terminal device through the SL MAC CE, wherein the second terminal device is a terminal device that establishes a PC5-RRC unicast connection with the first terminal device.

[0204] Optionally, the transceiver module 1302 is configured to:

[0205] Receive the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB sent by the first terminal device through the SL MAC CE, wherein the second terminal device is a terminal device within the group where the first terminal device is located, or the second terminal device is a terminal device receiving broadcast services.

[0206] See Figure 14 , Figure 14 A schematic structural diagram of another communication device provided in an embodiment of the present disclosure. Figure 14 In the embodiment, the communication device 1400 can be a network device, a terminal device, a chip, a chip system, or a processor that supports the network device to implement the above method, or a chip, a chip system, or a processor that supports the terminal device to implement the above method. The device can be used to implement the method described in the above method embodiment. For details, please refer to the description of the above method embodiment.

[0207] The communication device 1400 may include one or more processors 1401. The processor 1401 may be a general-purpose processor or a dedicated processor. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control the communication device (e.g., a base station, a baseband chip, a terminal device, a terminal device chip, a DU or CU, etc.), execute computer programs, and process computer program data.

[0208] Optionally, the communication device 1400 may further include one or more memories 1402, on which a computer program 1404 may be stored. The processor 1401 executes the computer program 1404 to cause the communication device 1400 to perform the method described in the above method embodiment. Optionally, the memory 1402 may also store data. The communication device 1400 and the memory 1402 may be provided separately or integrated together.

[0209] Optionally, the communication device 1400 may further include a transceiver 1405 and an antenna 1406. The transceiver 1405 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, etc., and is configured to implement transceiver functions. The transceiver 1405 may include a receiver and a transmitter. The receiver may be referred to as a receiver or a receiving circuit, etc., and is configured to implement a receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., and is configured to implement a transmitting function.

[0210] Optionally, the communication device 1400 may further include one or more interface circuits 1407. The interface circuit 1407 is configured to receive code instructions and transmit the code instructions to the processor 1401. The processor 1401 executes the code instructions to enable the communication device 1400 to perform the method described in the above method embodiment.

[0211] The communication device 1400 is a first terminal device: the processor 1401 is used to execute Figure 2 Step 201 in Figure 3 Step 301 in Figure 4 Step 401 in Figure 5 Step 502 in; Figure 6 The communication device 1400 is a network device: the transceiver 1405 is used to perform Figure 7 Step 702 in; Figure 8 Step 802 in Figure 9 Step 902 in .

[0212] In one implementation, processor 1401 may include a transceiver for implementing receiving and transmitting functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing the receiving and transmitting functions may be separate or integrated. The transceiver circuit, interface, or interface circuit may be used for reading and writing code / data, or may be used for transmitting or delivering signals.

[0213] In one implementation, processor 1401 may store a computer program 1403. Computer program 1403, when executed on processor 1401, may cause communication device 1400 to perform the method described in the above method embodiment. Computer program 1403 may be embedded in processor 1401, in which case processor 1401 may be implemented by hardware.

[0214] In one implementation, the communication device 1400 may include a circuit that can implement the functions of sending, receiving, or communicating in the aforementioned method embodiments. The processor and transceiver described in the present disclosure can be implemented on an integrated circuit (IC), an analog IC, a radio frequency integrated circuit RFIC, a mixed signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), N-type metal oxide semiconductor (nMetal-oxide-semiconductor, NMOS), P-type metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (bipolar junction transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0215] The communication device described in the above embodiments may be a network device or a terminal device, but the scope of the communication device described in this disclosure is not limited thereto, and the structure of the communication device may not be limited thereto. Figure 14 The communication device may be an independent device or may be part of a larger device. For example, the communication device may be:

[0216] (1) An independent integrated circuit (IC), or chip, or chip system or subsystem;

[0217] (2) a collection of one or more ICs, optionally including a storage component for storing data and computer programs;

[0218] (3) ASIC, such as modem;

[0219] (4) Modules that can be embedded in other devices;

[0220] (5) Receivers, terminal devices, intelligent terminal devices, cellular phones, wireless devices, handheld devices, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, etc.;

[0221] (6)Others, etc.

[0222] For the case where the communication device may be a chip or a chip system, see Figure 15 Schematic diagram of the chip structure shown. Figure 15 The chip 1500 shown includes a processor 1501 and an interface 1503. There may be one or more processors 1501, and there may be more than one interface 1503.

[0223] For the case where the chip is used to implement the functions of the first terminal device in the embodiment of the present disclosure:

[0224] Interface 1503, used to execute Figure 2 Step 202 in; Figure 3 Step 302 in Figure 4 Step 402; Figure 5 Step 501 and step 503; Figure 6 Step 601, step 603, etc.

[0225] Interface 1503, used to execute Figure 10 Step 1001 in Figure 11 Step 1101 in Figure 12 Step 1201 etc.

[0226] For the case where the chip is used to implement the functions of the network device in the embodiments of the present disclosure:

[0227] Interface 1503, used to execute Figure 7 Step 702 in; Figure 8 Step 802 in Figure 9 Step 902 in .

[0228] Optionally, the chip further includes a memory 1502, which is used to store necessary computer programs and data.

[0229] Those skilled in the art will also appreciate that the various illustrative logical blocks and steps listed in the embodiments of the present disclosure may be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented by hardware or software depends on the specific application and the design requirements of the entire system. Those skilled in the art may use various methods to implement the described functionality for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of the present disclosure.

[0230] The present disclosure also provides a readable storage medium having instructions stored thereon, which implement the functions of any of the above method embodiments when executed by a computer.

[0231] The present disclosure also provides a computer program product, which implements the functions of any of the above method embodiments when executed by a computer.

[0232] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented using software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0233] Those skilled in the art will understand that the various numerical numbers such as first and second involved in the present disclosure are only for the convenience of description and are not used to limit the scope of the embodiments of the present disclosure, and also indicate the order of precedence.

[0234] The at least one in the present disclosure can also be described as one or more, and the multiple can be two, three, four or more, which is not limited in the present disclosure. In the embodiments of the present disclosure, for a technical feature, the technical features in the technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", and there is no order of precedence or size between the technical features described by "first", "second", "third", "A", "B", "C" and "D".

[0235] The correspondences shown in the tables of the present disclosure can be configured or predefined. The values ​​of the information in each table are merely examples and can be configured to other values, which are not limited by the present disclosure. When configuring the correspondences between information and parameters, it is not necessarily required to configure all the correspondences shown in each table. For example, in the tables of the present disclosure, the correspondences shown in certain rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables may also adopt other names that can be understood by the communication device, and the values ​​or representations of the parameters may also adopt other values ​​or representations that can be understood by the communication device. When implementing the above tables, other data structures may also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables, etc.

Claims

1. A method for determining a sidelink logical channel identifier, characterized in that: Executed by a first terminal device, the method includes: Determine a logical channel identifier associated with a primary path and a logical channel identifier associated with an auxiliary path corresponding to a sidelink radio bearer SLRB; wherein the logical channel associated with the primary path and the logical channel associated with the auxiliary path corresponding to the SLRB are mapped to different carriers or different carrier groups; Sending the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB to the second terminal device; The determining of the logical channel identifier associated with the primary path and the logical channel identifier associated with the secondary path corresponding to the sidelink radio bearer SLRB includes: According to the hybrid automatic repeat request HARQ attribute of the logical channel, the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB are determined to ensure that the HARQ attribute of the logical channel associated with the main path and the HARQ attribute of the logical channel associated with the auxiliary path are the same.

2. The method according to claim 1, wherein The determining of the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB includes: The logical channel identifier associated with the main path corresponding to the SLRB is selected from the existing logical channel identifiers, and the logical channel identifier associated with the auxiliary path corresponding to the SLRB is selected from the reserved logical channel identifiers; wherein, the logical channel identifiers associated with the main path corresponding to different SLRBs are different, and the logical channel identifiers associated with the auxiliary path corresponding to different SLRBs are different.

3. The method according to claim 1, wherein The HARQ attributes of the logical channel associated with the primary path and the HARQ attributes of the logical channel associated with the secondary path are both HARQ enabled, or the HARQ attributes of the logical channel associated with the primary path and the HARQ attributes of the logical channel associated with the secondary path are both HARQ disabled.

4. The method according to claim 1, wherein The HARQ attribute of the logical channel associated with the primary path is default, the HARQ attribute of the logical channel associated with the auxiliary path is HARQ enabled or HARQ disabled, or the HARQ attribute of the logical channel associated with the auxiliary path is default.

5. The method according to claim 1, wherein The determining of the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB includes: Receive configuration information sent by network devices; According to the configuration information, the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB are determined.

6. The method according to claim 5, wherein The configuration information is radio bearer configuration information.

7. The method according to any one of claims 1 to 6, wherein The sending the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB to the second terminal device includes: The logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB are sent to the second terminal device through PC5-RRC signaling, wherein the second terminal device is a terminal device that establishes a PC5-RRC unicast connection with the first terminal device.

8. The method according to any one of claims 1 to 6, wherein The sending the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB to the second terminal device includes: The logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB are sent to the second terminal device through the SL MAC CE, wherein the second terminal device is a terminal device that establishes a PC5-RRC unicast connection with the first terminal device.

9. The method according to any one of claims 1 to 6, wherein The sending the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB to the second terminal device includes: The logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB are sent to the second terminal device through the SL MAC CE, wherein the second terminal device is a terminal device in the group where the first terminal device is located, or the second terminal device is a terminal device receiving broadcast services.

10. A method for determining a sidelink logical channel identifier, characterized in that: Executed by a network device, the method includes: Determine a logical channel identifier associated with a primary path and a logical channel identifier associated with a secondary path corresponding to the SLRB; wherein the logical channel associated with the primary path and the logical channel associated with the secondary path corresponding to the SLRB are mapped to different carriers or different carrier groups; Sending configuration information to the first terminal device, wherein the configuration information includes a logical channel identifier associated with the primary path and a logical channel identifier associated with the auxiliary path corresponding to the SLRB; The determining of the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB includes: According to the hybrid automatic repeat request HARQ attribute of the logical channel, the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB are determined to ensure that the HARQ attribute of the logical channel associated with the main path and the HARQ attribute of the logical channel associated with the auxiliary path are the same.

11. The method according to claim 10, wherein The determining of the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB includes: Select the logical channel identifier associated with the main path corresponding to the SLRB from the existing logical channel identifiers, and select the logical channel identifier associated with the auxiliary path corresponding to the SLRB from the reserved logical channel identifiers; wherein, the logical channel identifiers associated with the main path corresponding to different SLRBs are different, and the logical channel identifiers associated with the auxiliary path corresponding to different SLRBs are different.

12. The method according to claim 10, wherein The HARQ attributes of the logical channel associated with the primary path and the HARQ attributes of the logical channel associated with the secondary path are both HARQ enabled, or the HARQ attributes of the logical channel associated with the primary path and the HARQ attributes of the logical channel associated with the secondary path are both HARQ disabled.

13. The method according to claim 10, wherein The HARQ attribute of the logical channel associated with the primary path is default, the HARQ attribute of the logical channel associated with the auxiliary path is HARQ enabled or HARQ disabled, or the HARQ attribute of the logical channel associated with the auxiliary path is default.

14. A method for determining a sidelink logical channel identifier, characterized in that: Executed by a second terminal device, the method includes: Receive the main path associated logical channel identifier and the auxiliary path associated logical channel identifier corresponding to the SLRB sent by the first terminal device; wherein, the main path associated logical channel corresponding to the SLRB and the auxiliary path associated logical channel are mapped to different carriers or different carrier groups, and the main path associated logical channel identifier and the auxiliary path associated logical channel identifier corresponding to the SLRB are determined according to the hybrid automatic repeat request HARQ attribute of the logical channel to ensure that the HARQ attribute of the logical channel associated with the main path and the HARQ attribute of the logical channel associated with the auxiliary path are the same.

15. The method according to claim 14, wherein The receiving the primary path associated logical channel identifier and the secondary path associated logical channel identifier corresponding to the SLRB sent by the first terminal device includes: Receive the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB sent by the first terminal device through PC5-RRC signaling, wherein the second terminal device is a terminal device that establishes a PC5-RRC unicast connection with the first terminal device.

16. The method according to claim 15, wherein The receiving the primary path associated logical channel identifier and the secondary path associated logical channel identifier corresponding to the SLRB sent by the first terminal device includes: Receive the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB sent by the first terminal device through the SL MAC CE, wherein the second terminal device is a terminal device that establishes a PC5-RRC unicast connection with the first terminal device.

17. The method according to claim 15, wherein The receiving the primary path associated logical channel identifier and the secondary path associated logical channel identifier corresponding to the SLRB sent by the first terminal device includes: Receive the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB sent by the first terminal device through the SL MAC CE, wherein the second terminal device is a terminal device within the group where the first terminal device is located, or the second terminal device is a terminal device receiving broadcast services.

18. A communication device, characterized in that: include: A processing module, configured to determine a logical channel identifier associated with a primary path and a logical channel identifier associated with an auxiliary path corresponding to a sidelink radio bearer SLRB; wherein the logical channel associated with the primary path and the logical channel associated with the auxiliary path corresponding to the SLRB are mapped to different carriers or different carrier groups; A transceiver module, configured to send the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB to the second terminal device; The determining of the logical channel identifier associated with the primary path and the logical channel identifier associated with the secondary path corresponding to the sidelink radio bearer SLRB includes: According to the hybrid automatic repeat request HARQ attribute of the logical channel, the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB are determined to ensure that the HARQ attribute of the logical channel associated with the main path and the HARQ attribute of the logical channel associated with the auxiliary path are the same.

19. A communication device, characterized in that: include: A processing module, configured to determine a logical channel identifier associated with a primary path and a logical channel identifier associated with an auxiliary path corresponding to the SLRB; wherein the logical channel associated with the primary path and the logical channel associated with the auxiliary path corresponding to the SLRB are mapped to different carriers or different carrier groups; A transceiver module, configured to send configuration information to the first terminal device, wherein the configuration information includes a logical channel identifier associated with the primary path and a logical channel identifier associated with the auxiliary path corresponding to the SLRB; The determining of the logical channel identifier associated with the primary path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB includes: According to the hybrid automatic repeat request HARQ attribute of the logical channel, the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB are determined to ensure that the HARQ attribute of the logical channel associated with the main path and the HARQ attribute of the logical channel associated with the auxiliary path are the same.

20. A communication device, characterized in that: include: A transceiver module is used to receive the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB sent by the first terminal device; wherein the logical channel associated with the main path corresponding to the SLRB and the logical channel associated with the auxiliary path are mapped to different carriers or different carrier groups, and the logical channel identifier associated with the main path and the logical channel identifier associated with the auxiliary path corresponding to the SLRB are determined according to the hybrid automatic repeat request HARQ attribute of the logical channel to ensure that the HARQ attribute of the logical channel associated with the main path and the HARQ attribute of the logical channel associated with the auxiliary path are the same.

21. A communication device, characterized in that: The device includes a processor and a memory, wherein a computer program is stored in the memory, and the processor executes the computer program stored in the memory so that the device performs the method according to any one of claims 1 to 9, or performs the method according to any one of claims 10 to 13, or performs the method according to any one of claims 14 to 17.

22. A computer-readable storage medium storing instructions, which, when executed, implement the method according to any one of claims 1 to 9, or the method according to any one of claims 10 to 13, or the method according to any one of claims 14 to 17.

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