A method and apparatus for assistance information interaction

Abstract

The embodiment of the disclosure discloses an auxiliary information interaction method and device, which can be applied to a vehicle networking, V2X, V2V and the like, and the method comprises: a first terminal determines auxiliary information; wherein the auxiliary information is used to assist a second terminal to share acquired channel occupancy time (COT) with the first terminal, and the second terminal is a terminal initiating the shared COT; and the first terminal sends the auxiliary information to the second terminal. Through the implementation of the embodiment of the disclosure, the auxiliary information can be reported to the initiating terminal of the COT to assist the initiating terminal to share the preempted COT with the terminal reporting the auxiliary information, so that the initiating terminal can avoid sharing the preempted COT with the terminal that cannot use the COT, thereby supporting the responding terminal of the COT to use the shared COT to send the sidelink data to the initiating terminal of the COT, and avoiding the waste of the COT.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to an auxiliary information interaction method and apparatus. Background Technology

[0002] To support direct communication between terminals, a direct communication method (also called sidelink, SL) was introduced, with the interface between terminals being PC-5. Based on the correspondence between sending and receiving terminals, Sidelink supports three transmission modes: unicast, multicast, and broadcast.

[0003] For version R18 Sidelink, it supports operation in unlicensed spectrum. Sidelink communication can utilize unlicensed frequency bands, which are open and can be effectively used to improve performance and speed. Communication devices can compete for unlicensed frequency band resources to communicate.

[0004] Channel occupancy time (COT) sharing is a feature being discussed in Release 18, allowing terminals performing type 1 LBT (listen before talk) to preempt and share COT with other terminals. Type 1 LBT is based on a contention window, where the channel listening duration is determined by a random number until the random number equals 0 and the channel is idle. The terminal initiating COT sharing is called the COT-initiating UE, and the terminal using the shared COT is called the responding UE.

[0005] However, in the Sindlink-U (Sidelink-Unlicensed) scenario, how to enable the responding terminal to use the COT shared by the initiating terminal to avoid the waste of COT is an urgent problem to be solved. Summary of the Invention

[0006] This disclosure provides an auxiliary information interaction method and apparatus that can be applied to vehicle networks, such as vehicle-to-everything (V2X) communication, long term evolution-vehicle (LTE-V) communication, and vehicle-to-vehicle (V2V) communication. It can also be used in fields such as intelligent driving and intelligent connected vehicles. By reporting auxiliary information to the initiating terminal of the COT (Communication-Oriented Terminal), the initiating terminal is assisted in sharing the preempted COT with the terminal that reported the auxiliary information. This allows the responding terminal of the COT to use the shared COT to send sidelink data to the initiating terminal of the COT, thus avoiding the waste of COT.

[0007] In a first aspect, embodiments of this disclosure provide an auxiliary information interaction method, the method being executed by a first terminal, the method comprising:

[0008] Determine auxiliary information; wherein, the auxiliary information is used to assist the second terminal in sharing the acquired Channel Occupancy Time (COT) with the first terminal, and the second terminal is the terminal that initiates the sharing of COT;

[0009] The auxiliary information is sent to the second terminal.

[0010] In this technical solution, auxiliary information is sent by the first terminal to assist the initiating terminal of the shared COT in sharing the acquired COT with the first terminal (i.e., the responding terminal of the COT), so that the first terminal can use the shared COT to send data, thereby avoiding the waste of COT.

[0011] Secondly, this disclosure provides another auxiliary information interaction method, which is executed by a second terminal, and the method includes:

[0012] The system receives auxiliary information sent by a first terminal; wherein the auxiliary information is used to assist the second terminal in sharing the acquired Channel Occupancy Time (COT) with the first terminal, and the second terminal is the terminal that initiates the sharing of COT.

[0013] In this technical solution, the initiating terminal of the shared COT receives auxiliary information sent by the first terminal and shares the acquired COT with the first terminal (i.e., the responding terminal of the COT), so that the first terminal can use the shared COT to send data, thereby avoiding the waste of COT.

[0014] Thirdly, embodiments of this disclosure provide a configuration method, the method being executed by a network device, the method comprising:

[0015] Sending first configuration information to a first terminal, wherein the first configuration information includes a sending period for auxiliary information, the sending period being used to instruct the first terminal to periodically send the auxiliary information to a second terminal; wherein the auxiliary information is used to assist the second terminal in sharing the acquired Channel Occupancy Time (COT) with the first terminal, and the second terminal is the terminal that initiates the sharing of COT.

[0016] In this technical solution, the network device configures the auxiliary information sending period for the first terminal. The first terminal can periodically send auxiliary information according to the sending period to assist the COT initiating terminal in sharing the acquired COT with the first terminal (i.e., the COT responding terminal), so that the first terminal can use the shared COT to send data, thereby avoiding the waste of COT.

[0017] Fourthly, embodiments of this disclosure provide an auxiliary information interaction device. This auxiliary information interaction device has some or all of the functions of the first terminal described in the first aspect above. For example, the auxiliary information interaction device may have some or all of the functions in the embodiments of this disclosure, or it may have the functions of any one embodiment of this disclosure implemented individually. The functions can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

[0018] In one implementation, the auxiliary information interaction device may include a transceiver module and a processing module. The processing module is configured to support the auxiliary information interaction device in performing the corresponding functions described in the above method. The transceiver module supports communication between the auxiliary information interaction device and other devices. The auxiliary information interaction device may also include a storage module, which is coupled to the transceiver module and the processing module, and stores the necessary computer programs and data of the auxiliary information interaction device.

[0019] In one implementation, the processing module is used to determine auxiliary information; wherein the auxiliary information is used to assist the second terminal in sharing the acquired Channel Occupancy Time (COT) with the auxiliary information interaction device, and the second terminal is the terminal that initiates the sharing of COT; the transceiver module is used to send the auxiliary information to the second terminal.

[0020] In one implementation, the processing module is further configured to: determine the second terminal, wherein a unicast connection exists between the second terminal and the first terminal.

[0021] In one possible implementation, the reference signal received power (RSRP) of the unicast link between the second terminal and the first terminal is greater than or equal to a predetermined threshold; and / or the first terminal contains sidelink (SL) data to be sent to the second terminal.

[0022] In one implementation, the transceiver module is specifically used to: send the auxiliary information to the second terminal via multicast through a target address; wherein the target address is associated with a multicast service configured on the first terminal, and the first terminal and the second terminal are configured with the same multicast service; or, the target address is associated with a multicast service that the first terminal is interested in receiving and / or sending, and the first terminal and the second terminal receive and / or send the same multicast service.

[0023] In one implementation, the transceiver module is specifically configured to: broadcast the auxiliary information to the second terminal via a target address; wherein the target address is associated with a broadcast service configured for the first terminal, and the first terminal and the second terminal are configured with the same broadcast service; or, the target address is associated with a broadcast service that the first terminal is interested in receiving and / or sending, and the first terminal and the second terminal receive and / or send the same broadcast service.

[0024] In one implementation, the processing module is further configured to: determine the transmission period of the auxiliary information; the transceiver module is further configured to: periodically send the auxiliary information to the second terminal based on the transmission period.

[0025] In one possible implementation, the transceiver module is further configured to: receive first configuration information sent by the network device; the processing module is further configured to: determine the transmission period of the auxiliary information based on the first configuration information.

[0026] In one possible implementation, the processing module is further configured to: determine the sending period of the auxiliary information based on the auxiliary information interaction device.

[0027] In one possible implementation, the transceiver module is further configured to: receive second configuration information sent by the second terminal; the processing module is further configured to: determine the transmission period of the auxiliary information based on the second configuration information.

[0028] In one implementation, the processing module is further configured to: determine whether the conditions for triggering the reporting auxiliary information event are met.

[0029] In one possible implementation, the triggering condition is at least one of the following: the auxiliary information changes from the last transmitted auxiliary information; a unicast connection is initially established between the auxiliary information interaction device and the second terminal; a multicast service is initially established by the auxiliary information interaction device; or a broadcast service is initially established by the auxiliary information interaction device.

[0030] In one implementation, the transceiver module is further configured to: receive an auxiliary information request sent by the second terminal, the auxiliary information request being used to request the auxiliary information interaction device to send the auxiliary information to the second terminal.

[0031] In one possible implementation, the processing module is further configured to: determine that the auxiliary information request has been received; start a timer, wherein the timer is used to control the transmission of the auxiliary information; cancel the generation or transmission of the auxiliary information during the operation of the timer and if the auxiliary information is successfully transmitted; and stop the timer.

[0032] In one possible implementation, the processing module is further configured to: determine that the auxiliary information request has been received; start a timer, wherein the timer is used to control the transmission of the auxiliary information; determine that the timer has timed out; and cancel the generation or transmission of the auxiliary information.

[0033] In one implementation, the processing module is further configured to: determine that the allocation method of the link transmission resources on the auxiliary information interaction device side is network dynamic scheduling, and that the auxiliary information interaction device does not have available SL transmission resources for transmitting the auxiliary information; trigger a scheduling request SR, wherein the SR is used to request SL transmission resources for transmitting the auxiliary information.

[0034] In one implementation, the auxiliary information includes at least one of the following:

[0035] Business type;

[0036] Business cycle, which indicates the cycle in which business data arrives;

[0037] Time deviation, which indicates the offset of the arrival time of service data relative to the subframe with system frame number 0;

[0038] Data packet size;

[0039] The QoS (Quality of Service) flow identifier associated with the service type;

[0040] Business priorities;

[0041] The target address of the third terminal; the third terminal is another terminal that has a unicast connection with the auxiliary information interaction device, or another terminal that receives the same broadcast or multicast service with the auxiliary information interaction device.

[0042] In one implementation, the auxiliary information is carried by at least one of the following:

[0043] Communication interface PC5 Radio Resource Control (RRC) messages;

[0044] SL Media Access Control (MACCE) element;

[0045] Side Link Control Information (SCI).

[0046] As an example, the processing module can be a processor, the transceiver module can be a transceiver or a communication interface, and the storage module can be a memory.

[0047] Fifthly, embodiments of this disclosure provide another auxiliary information interaction device. This auxiliary information interaction device has some or all of the functions of the second terminal in the method example described in the second aspect above. For example, the auxiliary information interaction device may have some or all of the functions in the embodiments of this disclosure, or it may have the functions of implementing any one embodiment of this disclosure individually. The functions can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

[0048] In one implementation, the auxiliary information interaction device may include a transceiver module and a processing module. The processing module is configured to support the auxiliary information interaction device in performing the corresponding functions described in the above method. The transceiver module supports communication between the auxiliary information interaction device and other devices. The auxiliary information interaction device may also include a storage module, which is coupled to the transceiver module and the processing module, and stores the necessary computer programs and data of the auxiliary information interaction device.

[0049] In one implementation, the transceiver module is used to receive auxiliary information sent by a first terminal; wherein the auxiliary information is used to assist the auxiliary information interaction device in sharing the acquired Channel Occupancy Time (COT) with the first terminal, and the auxiliary information interaction device is a terminal that initiates the sharing of COT.

[0050] In one possible implementation, a unicast connection exists between the second terminal and the first terminal.

[0051] In one possible implementation, the reference signal received power (RSRP) of the unicast link between the first terminal and the second terminal is greater than or equal to a predetermined threshold; and / or, the first terminal contains sidelink (SL) data to be sent to the second terminal.

[0052] In one possible implementation, the transceiver module is specifically configured to: receive auxiliary information sent by the first terminal via multicast through a target address; wherein the target address is associated with a multicast service configured for the first terminal, and the first terminal and the second terminal are configured with the same multicast service; or, the target address is associated with a multicast service that the first terminal is interested in receiving and / or sending, and the first terminal and the second terminal receive and / or send the same multicast service.

[0053] In one possible implementation, the transceiver module is specifically configured to: receive auxiliary information broadcast by the first terminal via a target address; wherein the target address is associated with a broadcast service configured for the first terminal, and the first terminal and the second terminal are configured with the same broadcast service; or, the target address is associated with a broadcast service that the first terminal is interested in receiving and / or sending, and the first terminal and the second terminal receive and / or send the same broadcast service.

[0054] In one possible implementation, the transceiver module is specifically used to periodically receive auxiliary information sent by the first terminal.

[0055] In one possible implementation, the transceiver module is further configured to: send second configuration information to the first terminal, wherein the second configuration information includes the sending period of the auxiliary information.

[0056] In one implementation, the transceiver module is further configured to: send an auxiliary information request to the first terminal, the auxiliary information request being used to request the first terminal to send the auxiliary information to the auxiliary information interaction device.

[0057] In one implementation, the auxiliary information includes at least one of the following:

[0058] Business type;

[0059] Business cycle, which indicates the cycle in which business data arrives;

[0060] Time deviation, which indicates the offset of the arrival time of service data relative to the subframe with system frame number 0;

[0061] Data packet size;

[0062] The QoS (Quality of Service) flow identifier associated with the service type;

[0063] Business priorities;

[0064] The target address of the third terminal; the third terminal is another terminal that has a unicast connection with the first terminal, or another terminal that receives the same broadcast or multicast services as the first terminal.

[0065] In one implementation, the auxiliary information is carried by at least one of the following:

[0066] PC5 Radio Resource Control (RRC) message;

[0067] SL Media Access Control (MACCE) element;

[0068] Side Link Control Information (SCI).

[0069] Sixthly, embodiments of this disclosure provide yet another network device that has some or all of the functions of the network device in the example described in the second aspect above. For example, the network device may have the functions of some or all of the embodiments in this disclosure, or it may have the functions of any one embodiment in this disclosure implemented individually. The functions may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

[0070] In one implementation, the network device may include a transceiver module and a processing module, the processing module being configured to support the network device in performing the corresponding functions described in the above methods. The transceiver module is used to support communication between the network device and other devices. The network device may also include a storage module, which is coupled to the transceiver module and the processing module, and stores the necessary computer programs and data of the network device.

[0071] In one implementation, the transceiver module is used to send first configuration information to a first terminal, wherein the first configuration information includes a transmission period for auxiliary information, and the transmission period is used to instruct the first terminal to periodically send the auxiliary information to a second terminal; wherein the auxiliary information is used to assist the second terminal in sharing the acquired Channel Occupancy Time (COT) with the first terminal, and the second terminal is the terminal that initiates the sharing of COT.

[0072] In one implementation, the transceiver module is further configured to: receive a scheduling request SR sent by the first terminal, the SR being used to request sidelink SL transmission resources for transmitting the auxiliary information; and the processing module is configured to allocate SL transmission resources to the first terminal, the SL transmission resources being used to transmit the auxiliary information.

[0073] In one implementation, the auxiliary information includes at least one of the following:

[0074] Business type;

[0075] Business cycle, which indicates the cycle in which business data arrives;

[0076] Time deviation, which indicates the offset of the arrival time of service data relative to the subframe with system frame number 0;

[0077] Data packet size;

[0078] The QoS (Quality of Service) flow identifier associated with the service type;

[0079] Business priorities;

[0080] The target address of the third terminal; the third terminal is another terminal that has a unicast connection with the first terminal, or another terminal that receives the same broadcast or multicast services as the first terminal.

[0081] In one implementation, the auxiliary information is carried by at least one of the following:

[0082] PC5 Radio Resource Control (RRC) message;

[0083] SL Media Access Control (MACCE) element;

[0084] Side Link Control Information (SCI).

[0085] In a seventh aspect, embodiments of this disclosure provide a communication device including a processor that, when the processor invokes a computer program in memory, executes the method described in the first aspect.

[0086] Eighthly, embodiments of this disclosure provide a communication device including a processor that, when the processor invokes a computer program in memory, executes the method described in the second aspect above.

[0087] Ninthly, embodiments of this disclosure provide a communication device including a processor that, when the processor invokes a computer program in memory, executes the method described in the third aspect above.

[0088] In a tenth aspect, embodiments of this disclosure provide a communication device including a processor and a memory, the memory storing a computer program; the processor executes the computer program stored in the memory to cause the communication device to perform the method described in the first aspect above.

[0089] Eleventhly, embodiments of this disclosure provide a communication device including a processor and a memory, the memory storing a computer program; the processor executes the computer program stored in the memory to cause the communication device to perform the method described in the second aspect above.

[0090] In a twelfth aspect, embodiments of this disclosure provide a communication device including a processor and a memory storing a computer program; the processor executes the computer program stored in the memory to cause the communication device to perform the method described in the third aspect above.

[0091] In a thirteenth aspect, embodiments of this disclosure provide a communication device including a processor and an interface circuit. The interface circuit is configured to receive code instructions and transmit them to the processor, which is configured to execute the code instructions to cause the device to perform the method described in the first aspect above.

[0092] In a fourteenth aspect, embodiments of this disclosure provide a communication device including a processor and an interface circuit. The interface circuit is configured to receive code instructions and transmit them to the processor, which is configured to execute the code instructions to cause the device to perform the method described in the second aspect above.

[0093] In a fifteenth aspect, embodiments of this disclosure provide a communication device including a processor and an interface circuit. The interface circuit is configured to receive code instructions and transmit them to the processor, which is configured to execute the code instructions to cause the device to perform the method described in the third aspect above.

[0094] In a sixteenth aspect, embodiments of this disclosure provide an auxiliary information interaction system, which includes the auxiliary information interaction device described in the fourth aspect, the auxiliary information interaction device described in the fifth aspect, and the network device described in the sixth aspect; or, the system includes 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 includes 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 includes 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.

[0095] In a seventeenth aspect, embodiments of this disclosure provide a computer-readable storage medium for storing instructions for use by the first terminal described above, which, when executed, cause the first terminal to perform the method described in the first aspect.

[0096] In an eighteenth aspect, embodiments of this disclosure provide a readable storage medium for storing instructions for use by the second terminal, which, when executed, cause the second terminal to perform the method described in the second aspect.

[0097] In a nineteenth aspect, embodiments of this disclosure provide a readable storage medium for storing instructions for use by the network device described above, which, when executed, cause the network device to perform the method described in the third aspect.

[0098] In a twentieth aspect, this disclosure also provides a computer program product including a computer program that, when run on a computer, causes the computer to perform the method described in the first aspect above.

[0099] In a twentieth aspect, this disclosure also provides a computer program product including a computer program that, when run on a computer, causes the computer to perform the method described in the second aspect above.

[0100] In a twentieth aspect, this disclosure also provides a computer program product including a computer program that, when run on a computer, causes the computer to perform the method described in the third aspect above.

[0101] In a twentieth aspect, this disclosure provides a chip system including at least one processor and an interface for supporting a first terminal in implementing the functions involved in the first aspect, such as determining or processing at least one of the data and information involved in the above methods. In one possible design, the chip system further includes a memory for storing computer programs and data necessary for the first terminal. The chip system may be composed of chips or may include chips and other discrete devices.

[0102] In a twentieth aspect, this disclosure provides a chip system including at least one processor and an interface for supporting a second terminal in implementing the functions involved in the second aspect, such as determining or processing at least one of the data and information involved in the above methods. In one possible design, the chip system further includes a memory for storing computer programs and data necessary for the second terminal. The chip system may be composed of chips or may include chips and other discrete devices.

[0103] In a twentieth aspect, this disclosure provides a chip system including at least one processor and an interface for supporting network devices in implementing the functions involved in the second aspect, such as determining or processing at least one of the data and information involved in the above methods. In one possible design, the chip system further includes a memory for storing computer programs and data necessary for the network device. The chip system may be composed of chips or may include chips and other discrete devices.

[0104] In a twentieth aspect, this disclosure provides a computer program that, when run on a computer, causes the computer to perform the method described in the first aspect above.

[0105] In a twentieth aspect, this disclosure provides a computer program that, when run on a computer, causes the computer to perform the method described in the second aspect above.

[0106] In a twentieth aspect, this disclosure provides a computer program that, when run on a computer, causes the computer to perform the method described in the third aspect above. Attached Figure Description

[0107] To more clearly illustrate the technical solutions in the embodiments or background art of this disclosure, the accompanying drawings used in the embodiments or background art of this disclosure will be described below.

[0108] Figure 1 This is a schematic diagram of the architecture of a communication system provided in an embodiment of this disclosure;

[0109] Figure 2 This is a flowchart illustrating an auxiliary information interaction method provided in an embodiment of this disclosure;

[0110] Figure 3 This is a flowchart illustrating another auxiliary information interaction method provided in this embodiment of the disclosure;

[0111] Figure 4 This is a flowchart illustrating a configuration method provided in an embodiment of this disclosure;

[0112] Figure 5 A flowchart illustrating another auxiliary information interaction method provided in this embodiment of the disclosure;

[0113] Figure 6 This is a schematic diagram of the structure of a communication device provided in an embodiment of this disclosure;

[0114] Figure 7 This is a schematic diagram of another communication device provided in an embodiment of this disclosure;

[0115] Figure 8 This is a schematic diagram of the structure of a chip provided in an embodiment of this disclosure. Detailed Implementation

[0116] The embodiments of this disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this disclosure, and should not be construed as limiting this disclosure. In the description of this disclosure, unless otherwise stated, " / " means "or," for example, A / B can mean A or B; "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist, for example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone.

[0117] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. The singular forms “a” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0118] It should be understood that although the terms first, second, third, etc., may be used to describe various information in embodiments of this disclosure, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, first information may also be referred to as second information without departing from the scope of embodiments of this disclosure, and similarly, second information may also be referred to as first information. Depending on the context, the words “if” and “suppose” as used herein may be interpreted as “when”, “when”, or “in response to a determination”.

[0119] To facilitate understanding, the terminology used in this application will be introduced first.

[0120] 1. Shared COT initiating terminal

[0121] The COT initiating UE refers to the terminal that initiates the COT sharing.

[0122] 2. Shared COT response terminal

[0123] A COT-responding UE refers to a terminal that uses the shared COT. For example, when a responding UE is the target receiving terminal of a COT-initiating terminal, it can share the COT. A responding UE being the target receiving terminal of a COT-initiating terminal means that the target address indicated in the Sidelink Control Information (SCI) of the initiating terminal initiating the shared COT is the address of the responding UE, and / or, the target terminal identifier indicated by the shared COT indication information in the SCI is the terminal identifier of the responding UE. As an example, the responding UE could be a responding user equipment. The responding UE of the shared COT can also be referred to as the target terminal of the shared COT.

[0124] 3. Sindlink-U (Sidelink-Unlicensed, unlicensed spectrum for sidelinks) scenario

[0125] The Sindlink-U scenario refers to sidelink communication that can utilize unlicensed frequency bands. Unlicensed frequency bands are open and can be effectively utilized to improve performance and speed. Communication devices can compete for these unlicensed frequency band resources to communicate.

[0126] Embodiments of this disclosure are described in detail below, with examples of embodiments illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this disclosure, and should not be construed as limiting this disclosure.

[0127] To support direct communication between terminals, a direct communication method (also called Sidelink, SL) is introduced, with the interface between terminals being PC-5. Based on the correspondence between sending and receiving terminals, three transmission modes are supported on the Sidelink: unicast, multicast, and broadcast. The sending terminal transmits Sidelink control information on the Physical Sidelink Control Channel (PSCCH) and the second-stage SCI on the Physical Sidelink Shared Channel (PSSCH), which carries the resource location, source identifier, and destination identifier of the transmitted data. For data packets with HARQ (Hybrid Automatic Repeat Request) feedback enabled, the receiving terminal provides HARQ-ACK (Hybrid Automatic Retransmission Request Acknowledgement) feedback to the PSSCH on the Physical Sidelink Feedback Channel (PSFCH).

[0128] Sidelink communication offers two resource allocation methods: dynamic scheduling by the network (mode 1) and autonomous selection by the UE from a network-configured or pre-configured resource pool (mode 2). Dynamic scheduling involves the network dynamically allocating sidelink transmission resources to the UE based on its cached data reports. Autonomous selection allows the UE to randomly select transmission resources from the network-configured or pre-configured resource pool. The network can configure multiple resource pools for a single BWP (Bandwidth Part). The specific allocation method used is configured by the network via RRC (Radio Resource Control) signaling.

[0129] Versions R16 / 17 of Sidelink support terminals operating in mode 1 reporting SL-BSR (Buffer Status Report) to network devices, assisting network devices in scheduling SL resources. SL-BSR includes periodic SL-BSR and regular SL-BSR. NR-U (also called 5G NR-U, 5G New Radio in Unlicensed Spectrum, License-free band 5G NR, operating on unlicensed frequency bands) is a 3GPP (3rd Generation Partnership Project) project in version R16, providing operators with the necessary technology to fully integrate unlicensed spectrum into 5G networks. NR-U supports uplink and downlink operations in unlicensed frequency bands. In NR-U, both downlink and uplink channel access rely on the listen-before-talk (LBT) feature. Radio devices or base stations must first "sense" the communication channel, detecting the absence of communication before any transmission. When a communication channel is an unlicensed wideband carrier (e.g., several hundred MHz), the LBT process relies on detecting energy levels across multiple sub-bands of the communication channel. LBT parameters (such as type / duration, clear channel assessment parameters, etc.) are configured by the base station on the radio equipment. LBT types include type 1 and type 2. Type 1 is based on a contention window, where the channel listening duration is determined by a random number until the random number equals 0 and the channel is idle. Type 2 is based on listening to the channel for a fixed period, such as 25µs, 16µs, etc. CAPC (channel access priority class) is an LBT-related parameter. Different CAPC values ​​affect priority during channel contention. A smaller CAPC value indicates a higher priority.

[0130] It is worth noting that Channel Occupancy Time (COT) sharing is a feature being discussed in Release 18, allowing terminals performing Type 1 LBT (Listen Before Talk) to preempt and share COT with other terminals. However, there are certain requirements for terminals that can share COT. The terminal that initiates COT sharing is called the COT initiating UE, and the terminal using the shared COT is called the responding UE.

[0131] However, in the Sindlink-U (Sidelink-Unlicensed) scenario, how to enable the responding terminal to use the COT shared by the initiating terminal to avoid the waste of COT is an urgent problem to be solved.

[0132] To this end, embodiments of this disclosure provide an auxiliary information interaction method, configuration method, and apparatus. This method enables the initiating terminal to know the service information of the responding terminal through information interaction between the responding terminal and the initiating terminal of the shared COT. This assists the initiating terminal of the shared COT in sharing the acquired COT with the first terminal (i.e., the responding terminal of the COT), allowing the first terminal to use the shared COT to send data, thereby avoiding the waste of COT.

[0133] To better understand the auxiliary information interaction method, configuration method and apparatus disclosed in this disclosure, the communication system to which this disclosure is applicable will be described first.

[0134] Please see Figure 1 , Figure 1 This is a schematic diagram of the architecture of a communication system provided in an embodiment of the present disclosure. The communication system may include, but is not limited to, one network device and two terminals. Figure 1 The number and form of devices shown are for illustrative purposes only and do not constitute a limitation on the embodiments of this disclosure. In actual applications, it may include two or more network devices and three or more terminals. Figure 1 The communication system shown is an example including a network device 101 and two terminals (such as terminal 102 and terminal 103).

[0135] It should be noted that the technical solutions of this disclosure can be applied to various communication systems. For example, Long Term Evolution (LTE) systems, 5th Generation (5G) mobile communication systems, 5G New Radio (NR) systems, or other future new mobile communication systems. It should also be noted that the sidelink in this disclosure can also be referred to as a side link or a direct link.

[0136] The network device 101 in this embodiment is a network-side entity used for transmitting or receiving signals. For example, the network device 101 can be an evolved NodeB (eNB), a transmission reception 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. This disclosure does not limit the specific technology or device form used in the network device. The network device provided in this disclosure can be composed of a centralized unit (CU) and a distributed unit (DU). The CU can also be called a control unit. Using a CU-DU structure allows the protocol layer of a network device, such as a base station, to be separated. Some protocol layer functions are centrally controlled by the CU, while the remaining part or all protocol layer functions are distributed in the DU, which is centrally controlled by the CU.

[0137] In this embodiment, terminal 102 and terminal 103 are both user-side entities used to receive or transmit signals, such as mobile phones. It should be noted that the terminal in this embodiment can also be understood as user equipment or terminal equipment. That is, the terminal in this embodiment can also be called a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. The terminal can be a car with communication capabilities, a smart car, a mobile phone, a wearable device, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, and so on. The embodiments disclosed herein do not limit the specific technology or device form used in the terminal.

[0138] Optional. In this embodiment of the disclosure, the first terminal may refer to terminal 102, and the second terminal may refer to terminal 103. As an example, the number of first and second terminals mentioned in this embodiment of the disclosure may be one or more.

[0139] It is understood that the communication system described in the embodiments of this disclosure is for the purpose of more clearly illustrating the technical solutions of the embodiments of this disclosure, and does not constitute a limitation on the technical solutions provided in the embodiments of this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this disclosure are also applicable to similar technical problems.

[0140] The auxiliary information interaction method, configuration method and apparatus provided in this disclosure will be described in detail below with reference to the accompanying drawings.

[0141] Please see Figure 2 , Figure 2 This is a flowchart illustrating an auxiliary information interaction method provided in an embodiment of this disclosure. It should be noted that this method can be applied to unlicensed frequency bands (Sindlink-U) on the sidelink, and can be executed by a first terminal. Optionally, the first terminal can operate in transmission resource allocation mode 1 or mode 2. Figure 2 As shown, the method may include, but is not limited to, the following steps:

[0142] In step 201, auxiliary information is determined.

[0143] In one embodiment of this disclosure, the auxiliary information is used to assist the second terminal in sharing the acquired COT with the first terminal.

[0144] In the embodiments of this disclosure, the second terminal can be the terminal that initiates the shared COT, and the first terminal device can be the responding terminal of the shared COT. The responding terminal of the shared COT can also be referred to as the target terminal of the shared COT. Optionally, the first terminal can operate in transmission resource allocation mode 1 or mode 2, and the second terminal can also operate in transmission resource allocation mode 1 or mode 2.

[0145] In embodiments of this disclosure, the first terminal can determine the auxiliary information. In one possible implementation, the first terminal can determine the auxiliary information based on service type, service data arrival period and / or time, packet size, Quality of Service (QoS), service priority, etc. Alternatively, it can determine the auxiliary information based on service-related information between the first terminal and the third terminal, to assist the initiating terminal of the shared COT in sharing the preempted COT with the first terminal, so that the first terminal can use the shared COT. The third terminal can be another terminal with a unicast connection to the first terminal, or another terminal receiving the same broadcast or multicast service as the first terminal.

[0146] In one implementation, the auxiliary information may include, but is not limited to, at least one of the following 1) to 7):

[0147] 1) Service Type; whereby the service type may include the service type of the first terminal, or it may include the service type of the third terminal. The third terminal may be another terminal with a unicast connection to the first terminal, or another terminal receiving the same broadcast or multicast service as the first terminal. In this way, the first terminal provides its own service type to the initiating terminal of the shared COT, which assists the initiating terminal in combining the service type of the first terminal with the preempted COT to share with the first terminal, enabling the first terminal to use the COT to send data to the initiating terminal. Alternatively, the first terminal may provide the service type of the third terminal to the initiating terminal of the shared COT, which assists the initiating terminal in combining the service type of the third terminal (such as another terminal with a unicast (or multicast or broadcast) service with the first terminal device) to share the preempted COT with the first terminal, enabling the first terminal to use the COT to send data to the third terminal, or to share the preempted COT with the third terminal, enabling the third terminal to use the COT to send data, for example, to send data to the first terminal.

[0148] 2) Service Period: This service period indicates the period at which service data arrives. This service period can include the service period of the first terminal, or it can include the service period of the third terminal. In this way, the first terminal provides its own service period to the initiating terminal of the shared COT. This assists the initiating terminal in combining the service period of the first terminal with that of the first terminal to share the preempted COT with the first terminal, enabling the first terminal to use the COT to send data to the initiating terminal. Alternatively, the first terminal can provide the service period of the third terminal to the initiating terminal of the shared COT. This assists the initiating terminal in combining the service period of the third terminal (such as other terminals that have unicast (or multicast or broadcast) services with the first terminal's device) to share the preempted COT with the first terminal, enabling the first terminal to use the COT to send data to the third terminal, or to share the preempted COT with the third terminal, enabling the third terminal to use the COT to send data, for example, to send data to the first terminal.

[0149] 3) Time deviation, which indicates the offset of the arrival time of service data relative to subframe #0 of system frame number SFN#0.

[0150] 4) Data packet size.

[0151] 5) The Quality of Service (QoS) flow identifier associated with this service type.

[0152] 6) Business priority.

[0153] 7) The target address of the third terminal; the target address can be the layer 2 address of the third terminal.

[0154] As an example, the first terminal can obtain auxiliary information such as its service type, service period, time deviation, data packet size, QoS flow identifier associated with the service type, and service priority. This allows the initiating terminal to know or estimate the first terminal's service information based on this auxiliary information, thus assisting the initiating terminal in sharing the preempted COT with the first terminal. This ensures that the first terminal can use the shared COT and send data to the initiating terminal, thereby preventing the initiating terminal from sharing the preempted COT with a responding terminal that cannot use the COT.

[0155] As an example, the first terminal can obtain auxiliary information such as the service type, service period, time deviation, data packet size, QoS flow identifier associated with the service type, service priority, and target address of the third terminal. This allows the initiating terminal to know or estimate the service information of the third terminal associated with the first terminal based on this auxiliary information. This assists the initiating terminal in sharing the preempted COT with the first terminal, ensuring that the first terminal can use the shared COT to send data to other terminals besides the initiating terminal. Alternatively, it assists the initiating terminal in sharing the preempted COT with the third terminal, enabling the third terminal to use the COT to send data, for example, to the first terminal. This avoids the initiating terminal sharing the preempted COT with responding terminals that cannot use the COT.

[0156] In other words, the first terminal can notify the second terminal through auxiliary information about the service type and / or target address (such as Layer 2 address) of other destination terminals of the first terminal to support COT sharing. For example, the other destination terminals may be other terminals that have unicast connections with the first terminal, or other terminals that receive the same broadcast or multicast services as the first terminal.

[0157] In one implementation, the auxiliary information can be carried by at least one of the following: a PC5 RRC message used for communication between terminals; a SL Media Access Control (MACCE) element; or a SCI. As an example, the first terminal can send the auxiliary information via a PC5 RRC message, where the PC5 RRC message can be an RRCReconfigurationSidelink message. As another example, the first terminal can send the auxiliary information via SLMACCE, or it can also send the auxiliary information via SCI. Alternatively, as yet another example, the first terminal can send the auxiliary information via any two or three combinations of PC5 RRC messages, SLMACCE, and SCI. This disclosure does not limit or elaborate on these methods.

[0158] In step 202, auxiliary information is sent to the second terminal.

[0159] Optionally, after determining the auxiliary information, the first terminal may send the auxiliary information to the second terminal. The first terminal may send the auxiliary information in unicast, multicast, or broadcast format.

[0160] In some embodiments of this disclosure, the first terminal may transmit the auxiliary information in unicast form. In one possible implementation, the first terminal may determine the second terminal and send the auxiliary information to the second terminal. The second terminal may be a terminal with a unicast connection to the first terminal. Optionally, the reference signal received power (RSRP) of the unicast link between the second terminal and the first terminal is greater than or equal to a predetermined threshold; and / or, the first terminal contains sidelink (SL) data to be sent to the second terminal.

[0161] As an example, the first terminal may determine the second terminal by identifying a second terminal with which it has a unicast connection. For instance, the first terminal may identify one or more second terminals with which it has a unicast connection. Exemplarily, the first terminal may send the auxiliary information to one or more second terminals with which it has a unicast connection, or the first terminal may send the auxiliary information to all second terminals with which it has a unicast connection.

[0162] As another example, a first terminal can determine a second terminal with which it has a unicast connection and which meets certain conditions. For example, the first terminal can send the auxiliary information to the second terminal with which it has a unicast connection and which meets certain conditions. In embodiments of this disclosure, the conditions include: the RSRP of the unicast link between the second terminal and the first terminal is greater than or equal to a predetermined threshold; and / or, the first terminal has SL data to be sent to the second terminal. The SL data may include, but is not limited to, PSSCH and / or PSCCH data.

[0163] For example, the first terminal may send the auxiliary information to one or more second terminals that have a unicast connection with the first terminal and whose unicast link RSRP is greater than or equal to a predetermined threshold. Alternatively, the first terminal may send the auxiliary information to one or more second terminals, wherein the second terminals have a unicast connection with the first terminal and the first terminal contains SL data to be sent to the second terminals. Or, the first terminal may select one or more second terminals that have a unicast connection with the first terminal and send the auxiliary information to the selected second terminals.

[0164] In some embodiments of this disclosure, the first terminal may send the auxiliary information in a multicast format. In one possible implementation, the first terminal may send the auxiliary information to the second terminal via a target address in a multicast format; wherein the target address is associated with a multicast service configured for the first terminal, and the first terminal and the second terminal are configured with the same multicast service; or, the target address is associated with a multicast service that the first terminal is interested in receiving and / or sending, and the first terminal and the second terminal receive and / or send the same multicast service. As an example, the target address is the target address of the multicast service. Optionally, how the first terminal selects one or more target addresses can be left to the first terminal to implement. As an example, the first terminal may select one or more target addresses associated with multicast services to send the auxiliary information in a multicast format, wherein the second terminal, which receives the same multicast service as the first terminal, can receive the auxiliary information. When the second terminal receives the auxiliary information, it can understand or estimate the service information of the first terminal, and thus can combine the auxiliary information to share the preempted COT with the first terminal, such as sending a shared COT indication message to the first terminal, thereby enabling the first terminal to use the COT.

[0165] In some embodiments of this disclosure, the first terminal may broadcast the auxiliary information. In one possible implementation, the first terminal may broadcast the auxiliary information to the second terminal via a target address; wherein the target address is associated with a broadcast service configured for the first terminal, and the first terminal and the second terminal are configured with the same broadcast service; or, the target address is associated with a broadcast service that the first terminal is interested in receiving and / or sending, and the first terminal and the second terminal receive and / or send the same broadcast service. Optionally, how the first terminal selects one or more target addresses can be left to the first terminal to implement. As an example, the first terminal may select one or more target addresses associated with broadcast services to broadcast the auxiliary information, wherein the second terminal, which receives the same broadcast service as the first terminal, can receive the auxiliary information. When the second terminal receives the auxiliary information, it can understand or estimate the service information of the first terminal, and thus can combine the auxiliary information to share the preempted COT with the first terminal, such as sending a shared COT indication message to the first terminal, thereby enabling the first terminal to use the COT.

[0166] Optionally, in some embodiments of this disclosure, the auxiliary information supports periodic reporting. In one possible implementation, the first terminal determines the transmission period of the auxiliary information and, based on the transmission period, periodically sends the auxiliary information to the second terminal. Optionally, the transmission period can be obtained through network configuration, determined by the terminal, or configured by the second terminal.

[0167] As an example, the first terminal can receive first configuration information sent by the network device, which includes the transmission period. Based on this first configuration information, the first terminal can determine the transmission period of the auxiliary information. For instance, if the first terminal is in RRC connected state, it can obtain the first configuration information from the network device via dedicated RRC signaling and determine the transmission period of the auxiliary information based on this information. Alternatively, if the first terminal is in RRC idle or inactive state, it can obtain the first configuration information from the network device via SIB (System Information Block) and determine the transmission period of the auxiliary information based on this information. Or, if the first terminal is in OOC (out of coverage) state, it can obtain the transmission period of the auxiliary information through pre-configuration.

[0168] As another example, the first terminal can receive second configuration information sent by the second terminal, which includes the transmission period. Thus, the first terminal can determine the transmission period of the auxiliary information based on the second configuration information. For example, the second terminal can configure the transmission period via a PC5-RRC message, which can be an RRCReconfigurationSidelink. That is, the second terminal can carry the second configuration information via the PC5-RRC message. When the first terminal receives the PC5-RRC message carrying the second configuration information, it can determine the transmission period of the auxiliary information based on the second configuration information.

[0169] As another example, the first terminal can determine the sending cycle of the auxiliary information based on the first terminal.

[0170] It should be noted that the scheme of periodically sending this auxiliary information is applicable to unicast, multicast and broadcast services. This disclosure does not limit this, nor will it elaborate further.

[0171] Optionally, in some embodiments of this disclosure, the auxiliary information supports event-triggered reporting. In one possible implementation, the first terminal determines that the event triggering condition for reporting auxiliary information is met, and then sends the auxiliary information to the second terminal. The triggering condition can be at least one of the following: the auxiliary information has changed since the last reported auxiliary information; an initial unicast connection is established between the first terminal and the second terminal; or the first terminal initially establishes a multicast service or an initial broadcast service. That is, the event triggering condition for the auxiliary information includes, but is not limited to, at least one of the following: a change since the last reported auxiliary information; initial reporting, such as initial establishment of a unicast connection, initial establishment of a multicast service, initial establishment of a broadcast service, etc.

[0172] As an example, if the first terminal device determines that the auxiliary information to be sent this time has changed since the last auxiliary information sent, it will send the auxiliary information to be sent to the second terminal. In this way, the second terminal that receives the auxiliary information can share the acquired COT with the first terminal based on the auxiliary information to support COT sharing.

[0173] As another example, if the first terminal determines that an initial unicast connection has been established between the first terminal and the second terminal, it sends the auxiliary information to the second terminal to assist the second terminal in sharing the acquired COT with the first terminal, thereby supporting COT sharing.

[0174] As another example, if the first terminal determines that it is initially establishing a multicast service, it will send the auxiliary information to the second terminal via multicast through the target address of the multicast service. For example, if a higher layer initially establishes a multicast group, the higher layer can notify the AS (Access Layer) layer through internal implementation within the terminal. When the first terminal receives the multicast service, it sends the auxiliary information to the second terminal via multicast through the target address of the multicast service. The second terminal, which receives the same multicast service as the first terminal, can receive the auxiliary information. Based on this auxiliary information, the second terminal can share the acquired COT (Content on Target) with the first terminal to support COT sharing.

[0175] As another example, if the first terminal determines that it has initially established a broadcast service, it will send the auxiliary information to the second terminal via multicast through the target address of the broadcast service. For example, if a higher layer initially establishes a broadcast service, the higher layer can notify the AS layer through internal implementation within the terminal. If the first terminal receives the broadcast service, it will send the auxiliary information to the second terminal via multicast through the target address of the broadcast service. The second terminal, which receives the same broadcast service as the first terminal, can receive the auxiliary information. The second terminal can then share the acquired COT with the first terminal based on the auxiliary information to support COT sharing.

[0176] Optionally, in some embodiments of this disclosure, the auxiliary information supports request-based reporting. In one possible implementation, the first terminal receives an auxiliary information request sent by the second terminal, the auxiliary information request being used to request the first terminal to send the auxiliary information to the second terminal; the first terminal then sends the auxiliary information to the second terminal. It should be noted that the request-based reporting scheme for auxiliary information is only applicable to unicast services. When the first terminal receives an auxiliary information request from the second terminal, the first terminal triggers the reporting of auxiliary information to the second terminal.

[0177] As one example, the first terminal determines that it has received the auxiliary information request, starts a timer, which controls the transmission of the auxiliary information; during the timer's operation, if the auxiliary information is successfully transmitted, the first terminal cancels the generation or transmission of the auxiliary information; and stops the timer. As another example, the first terminal determines that it has received the auxiliary information request, starts a timer; determines that the timer has timed out; and cancels the generation or transmission of the auxiliary information.

[0178] In other words, the first terminal can control the transmission of the auxiliary information through a timer. When the auxiliary information request is received, the first terminal starts the timer. During the operation of the timer, if the auxiliary information is successfully transmitted, the first terminal cancels the auxiliary information and stops the timer. If the timer expires, the first terminal cancels the auxiliary information.

[0179] Here, "canceling auxiliary information" refers to removing auxiliary information. For example, upon confirming the receipt of an auxiliary information request, a timer is started, triggering the generation and transmission of auxiliary information. If the auxiliary information is triggered but a report for that auxiliary information has not yet been generated, the timer expires, and the auxiliary information needs to be canceled. That is, the first terminal cancels the auxiliary information, for example, by ending the generation operation of the report for that auxiliary information. Or, if the report for that auxiliary information has been generated but has not yet been sent, and the timer expires, the auxiliary information also needs to be canceled. That is, the first terminal cancels the auxiliary information, for example, by deleting the generated report for that auxiliary information. Or, there may be other situations that cause the timer to expire and the auxiliary information to not be successfully sent. In these cases, the first terminal needs to cancel the auxiliary information. This disclosure does not limit this, nor will it elaborate further. Again, for example, upon confirming the receipt of an auxiliary information request, a timer is started, triggering the generation and transmission of auxiliary information. If the auxiliary information is triggered during the timer's operation, and the report for that auxiliary information is generated and sent successfully, the auxiliary information needs to be canceled. That is, there is no need to retry sending the auxiliary information; the first terminal cancels the auxiliary information.

[0180] Optionally, in some embodiments of this disclosure, if the first terminal determines that the allocation method of the first terminal-side traversal transmission resources is a first allocation method, and the first terminal does not have available SL transmission resources for transmitting the auxiliary information, it can trigger a scheduling request (SR). The SR is used to request SL transmission resources for transmitting the auxiliary information. The first allocation method can be a network-dynamic scheduling method for traversal transmission resources (such as the mode 1 mode described above). For example, if the first terminal is operating in mode 1 (i.e., the allocation method of the first terminal-side traversal transmission resources is a network-dynamic scheduling method for traversal transmission resources), and there are no SL transmission resources for transmitting auxiliary information, the first terminal can trigger a scheduling request (SR) and report an SL-BSR to the network device to assist the network device in scheduling SL transmission resources so that the first terminal can use the SL transmission resources to transmit the auxiliary information.

[0181] It is worth noting that for a responding terminal to use the COT shared by the initiating terminal, the following two conditions must be met: Condition 1, the receiving terminal of the data packet sent by the responding terminal using the COT must include at least the initiating terminal of the COT or other terminals indicated by the shared COT indication information; Condition 2, there are also requirements for the CAPC of the responding terminal's data packet, requiring that the CAPC of the responding terminal's data packet within the shared COT is less than or equal to the CAPC carried by the initiating terminal in the shared COT indication information. Therefore, when these two conditions (i.e., conditions 1 and 2 above) are not met, the responding terminal cannot use the COT shared by the initiating terminal, resulting in a waste of the COT. To solve this problem, in this embodiment of the disclosure, a first terminal sends auxiliary information to the initiating terminal of the shared COT to assist the initiating terminal in sharing the acquired COT with the first terminal, so that the first terminal can be called the responding terminal of the COT. The second terminal (i.e., the initiating terminal of the shared COT) receives the auxiliary information and determines whether the first terminal can meet the conditions for using the shared COT (such as conditions 1 and 2 above). If the first terminal meets the conditions for using the shared COT, the initiating terminal can share the COT with the first terminal by sending a shared COT instruction message to the first terminal. This allows the first terminal to use the COT, preventing the initiating terminal from sharing the preempted COT with a responding terminal that cannot use the COT, thus avoiding the waste of the COT.

[0182] It is understood that the above embodiments describe the implementation of the auxiliary information interaction method of this disclosure from the perspective of a first terminal. This disclosure also proposes another auxiliary information interaction method, the implementation of which will be described below from the perspective of a second terminal. Please refer to... Figure 3 , Figure 3 This is a flowchart illustrating another auxiliary information interaction method provided in this disclosure. It should be noted that this method can be applied to unlicensed frequency bands (Sindlink-U) scenarios on the sidelink, and this method can be executed by a second terminal. For example... Figure 3 As shown, the method may include, but is not limited to, the following steps.

[0183] In step 301, the second terminal receives auxiliary information sent by the first terminal.

[0184] In one embodiment of this disclosure, the auxiliary information is used to assist the second terminal in sharing the acquired COT with the first terminal.

[0185] Optionally, the second terminal can operate in either mode 1 or mode 2 of the transmission resource allocation method, and the first terminal can also operate in either mode 1 or mode 2. Optionally, the second terminal can be the terminal that initiates the shared COT, and the first terminal device can be the responding terminal of the shared COT. The responding terminal of the shared COT can also be referred to as the target terminal of the shared COT.

[0186] In the embodiments of this disclosure, the first terminal can determine auxiliary information and send the auxiliary information to the second terminal. The implementation methods for the first terminal to determine and send the auxiliary information are described above. Figure 2 The description of the implementation method for the first terminal to determine and send the auxiliary information in the illustrated embodiment is not limited in this disclosure and will not be repeated here. The second terminal can receive the auxiliary information sent by the first terminal.

[0187] Optionally, the first terminal may send the auxiliary information in unicast, multicast, or broadcast format. In one possible implementation, the second terminal may receive the auxiliary information sent by the first terminal in unicast format; wherein a unicast connection exists between the second terminal and the first terminal. Optionally, the reference signal received power (RSRP) of the unicast link between the first terminal and the second terminal is greater than or equal to a predetermined threshold; and / or, the first terminal contains sidelink (SL) data to be sent to the second terminal.

[0188] In another possible implementation, the second terminal may receive auxiliary information sent by the first terminal in multicast format. As an example, the second terminal receives auxiliary information sent by the first terminal via multicast through a target address; wherein the target address is associated with a multicast service configured for the first terminal, and the first and second terminals are configured with the same multicast service; or, the target address is associated with a multicast service that the first terminal is interested in receiving and / or sending, and the first and second terminals receive and / or send the same multicast service.

[0189] In another possible implementation, the second terminal may receive auxiliary information broadcast by the first terminal. As an example, the second terminal receives auxiliary information broadcast by the first terminal via a target address; wherein the target address is associated with a broadcast service configured for the first terminal, and the first and second terminals are configured with the same broadcast service; or, the target address is associated with a broadcast service that the first terminal is interested in receiving and / or transmitting, and the first and second terminals receive and / or transmit the same broadcast service.

[0190] Optionally, in some embodiments of this disclosure, the auxiliary information supports periodic reporting. In one possible implementation, the first terminal determines the transmission period of the auxiliary information and periodically sends the auxiliary information based on the transmission period. The second terminal can periodically receive the auxiliary information sent by the first terminal. Optionally, the transmission period can be obtained through network configuration, determined by the terminal, or configured by the second terminal. It should be noted that the scheme of periodically sending the auxiliary information is applicable to unicast services, multicast services, and broadcast services, but this disclosure does not limit it and will not elaborate further.

[0191] Optionally, in some embodiments of this disclosure, the second terminal may send second configuration information to the first terminal, wherein the second configuration information includes the sending period of the auxiliary information. In this way, the first terminal can determine the sending period of the auxiliary information based on the second configuration information, and the first terminal can periodically send the auxiliary information to the second terminal based on the sending period.

[0192] Optionally, in some embodiments of this disclosure, the auxiliary information supports request-based reporting. In one possible implementation, the second terminal may send an auxiliary information request to the first terminal, which requests the first terminal to send the auxiliary information to the second terminal; the second terminal receives the auxiliary information sent by the first terminal. It should be noted that the request-based reporting scheme for auxiliary information is only applicable to unicast services. When the first terminal receives the auxiliary information request from the second terminal, the first terminal triggers the reporting of auxiliary information to the second terminal.

[0193] In one implementation, the auxiliary information may include, but is not limited to, at least one of the following:

[0194] 1) Service Type; whereby the service type may include the service type of the first terminal, or it may include the service type of the third terminal. The third terminal may be another terminal with a unicast connection to the first terminal, or another terminal receiving the same broadcast or multicast service as the first terminal. In this way, the first terminal provides its own service type to the initiating terminal of the shared COT, which assists the initiating terminal in combining the service type of the first terminal with the preempted COT to share with the first terminal, enabling the first terminal to use the COT to send data to the initiating terminal. Alternatively, the first terminal may provide the service type of the third terminal to the initiating terminal of the shared COT, which assists the initiating terminal in combining the service type of the third terminal (such as another terminal with a unicast (or multicast or broadcast) service with the first terminal device) to share the preempted COT with the first terminal, enabling the first terminal to use the COT to send data to the third terminal, or to share the preempted COT with the third terminal, enabling the third terminal to use the COT to send data, for example, to send data to the first terminal.

[0195] 2) Service Period: This service period indicates the period at which service data arrives. This service period can include the service period of the first terminal, or it can include the service period of the third terminal. In this way, the first terminal provides its own service period to the initiating terminal of the shared COT. This assists the initiating terminal in combining the service period of the first terminal with that of the first terminal to share the preempted COT with the first terminal, enabling the first terminal to use the COT to send data to the initiating terminal. Alternatively, the first terminal can provide the service period of the third terminal to the initiating terminal of the shared COT. This assists the initiating terminal in combining the service period of the third terminal (such as other terminals that have unicast (or multicast or broadcast) services with the first terminal's device) to share the preempted COT with the first terminal, enabling the first terminal to use the COT to send data to the third terminal, or to share the preempted COT with the third terminal, enabling the third terminal to use the COT to send data, for example, to send data to the first terminal.

[0196] 3) Time deviation, which indicates the offset of the arrival time of service data relative to subframe #0 of system frame number SFN#0.

[0197] 4) Data packet size.

[0198] 5) The Quality of Service (QoS) flow identifier associated with this service type.

[0199] 6) Business priority.

[0200] 7) The target address of the third terminal; the target address can be the layer 2 address of the third terminal.

[0201] As an example, the first terminal can obtain auxiliary information such as its service type, service period, time deviation, data packet size, QoS flow identifier associated with the service type, and service priority. This allows the initiating terminal to know or estimate the first terminal's service information based on this auxiliary information, thus assisting the initiating terminal in sharing the preempted COT with the first terminal. This ensures that the first terminal can use the shared COT and send data to the initiating terminal, thereby preventing the initiating terminal from sharing the preempted COT with a responding terminal that cannot use the COT.

[0202] As an example, the first terminal can obtain auxiliary information such as the service type, service period, time deviation, data packet size, QoS flow identifier associated with the service type, service priority, and target address of the third terminal. This allows the initiating terminal to know or estimate the service information of the third terminal associated with the first terminal based on this auxiliary information. This assists the initiating terminal in sharing the preempted COT with the first terminal, ensuring that the first terminal can use the shared COT to send data to other terminals besides the initiating terminal. Alternatively, it assists the initiating terminal in sharing the preempted COT with the third terminal, enabling the third terminal to use the COT to send data, for example, to the first terminal. This avoids the initiating terminal sharing the preempted COT with responding terminals that cannot use the COT.

[0203] In other words, the first terminal can notify the second terminal through auxiliary information about the service type and / or target address (such as Layer 2 address) of other destination terminals of the first terminal to support COT sharing. For example, the other destination terminals may be other terminals that have unicast connections with the first terminal, or other terminals that receive the same broadcast or multicast services as the first terminal.

[0204] In one implementation, the auxiliary information can be carried by at least one of the following: a PC5 RRC message; SLMACCE; or SCI. As an example, the first terminal can send the auxiliary information via a PC5 RRC message, where the PC5 RRC message can be an RRCReconfigurationSidelink message. As another example, the first terminal can send the auxiliary information via SLMACCE, or it can also send the auxiliary information via SCI. Alternatively, as yet another example, the first terminal can send the auxiliary information via any two or three combinations of PC5 RRC messages, SLMACCE, and SCI. This disclosure does not limit or elaborate on these methods.

[0205] By implementing the embodiments of this disclosure, the second terminal (i.e., the initiating terminal of the COT) receives auxiliary information sent by the first terminal and shares the acquired COT with the first terminal (i.e., the responding terminal of the COT) to support COT sharing, so that the first terminal can use the shared COT to send data, thereby avoiding the waste of COT.

[0206] It is understood that the above embodiments describe the implementation of the auxiliary information interaction method of this disclosure from the perspective of the first terminal and the second terminal. This disclosure also proposes a configuration method, the implementation of which will be described below from the perspective of the network device. Please refer to... Figure 4 , Figure 4 This is a flowchart illustrating a configuration method provided in an embodiment of this disclosure. It should be noted that this method can be applied to unlicensed frequency bands (Sindlink-U) on the sidelink, and the method can be executed by a network device. Figure 4 As shown, the method may include, but is not limited to, the following steps.

[0207] In step 401, first configuration information is sent to the first terminal.

[0208] In one embodiment of this disclosure, the first configuration information includes a transmission period for auxiliary information, which is used to instruct the first terminal to periodically send the auxiliary information to the second terminal; wherein the auxiliary information is used to assist the second terminal in sharing the acquired Channel Occupancy Time (COT) with the first terminal, and the second terminal is the terminal that initiates the sharing of COT.

[0209] Optionally, the second terminal can operate in either mode 1 or mode 2 of the transmission resource allocation method, and the first terminal can also operate in either mode 1 or mode 2. Optionally, the second terminal can be the terminal that initiates the shared COT, and the first terminal device can be the responding terminal of the shared COT. The responding terminal of the shared COT can also be referred to as the target terminal of the shared COT.

[0210] In embodiments of this disclosure, a network device can send first configuration information to a first terminal. Upon receiving the first configuration information, the first terminal can determine the transmission period of the auxiliary information based on the first configuration information. Based on the transmission period, the first terminal can periodically send the auxiliary information to a second terminal. This auxiliary information assists the second terminal in sharing the acquired Channel Occupancy Time (COT) with the first terminal. Upon receiving the auxiliary information, the second terminal can share the acquired COT with the first terminal based on the auxiliary information, enabling the first terminal to act as a responding terminal for the COT. Upon receiving the auxiliary information, the second terminal can determine whether the first terminal meets the conditions for sharing the COT (conditions 1 and 2). If the first terminal meets the conditions for sharing the COT, the COT initiating terminal can share the COT with the first terminal, i.e., send a shared COT indication message to the first terminal. This allows the first terminal to use the COT, preventing the initiating terminal from sharing its preempted COT with a responding terminal that cannot use it, thus avoiding the waste of COT.

[0211] In the embodiments of this disclosure, the implementation methods for the first terminal to send auxiliary information and the second terminal to receive auxiliary information can be referred to the above. Figure 2 and Figure 3 The description of the illustrated embodiments is not intended to limit the scope of this disclosure, nor will it be repeated here.

[0212] Optionally, in some embodiments of this disclosure, if the first terminal determines that the allocation method of the first terminal-side traversal transmission resources is network dynamic scheduling of traversal transmission resources (such as the mode 1 mode described above), and the first terminal does not have available SL transmission resources for transmitting the auxiliary information, then a scheduling request SR can be triggered. The SR is used to request SL transmission resources for transmitting the auxiliary information. The network device can receive the scheduling request SR sent by the first terminal, which is used to request SL transmission resources for transmitting the auxiliary information; the network device allocates SL transmission resources to the first terminal, and the SL transmission resources are used to transmit the auxiliary information.

[0213] In one implementation, the auxiliary information may include, but is not limited to, at least one of the following:

[0214] 1) Service Type; whereby the service type may include the service type of the first terminal, or it may include the service type of the third terminal. The third terminal may be another terminal with a unicast connection to the first terminal, or another terminal receiving the same broadcast or multicast service as the first terminal. In this way, the first terminal provides its own service type to the initiating terminal of the shared COT, which assists the initiating terminal in combining the service type of the first terminal with the preempted COT to share with the first terminal, enabling the first terminal to use the COT to send data to the initiating terminal. Alternatively, the first terminal may provide the service type of the third terminal to the initiating terminal of the shared COT, which assists the initiating terminal in combining the service type of the third terminal (such as another terminal with a unicast (or multicast or broadcast) service with the first terminal device) to share the preempted COT with the first terminal, enabling the first terminal to use the COT to send data to the third terminal, or to share the preempted COT with the third terminal, enabling the third terminal to use the COT to send data, for example, to send data to the first terminal.

[0215] 2) Service Period: This service period indicates the period at which service data arrives. This service period can include the service period of the first terminal, or it can include the service period of the third terminal. In this way, the first terminal provides its own service period to the initiating terminal of the shared COT. This assists the initiating terminal in combining the service period of the first terminal with that of the first terminal to share the preempted COT with the first terminal, enabling the first terminal to use the COT to send data to the initiating terminal. Alternatively, the first terminal can provide the service period of the third terminal to the initiating terminal of the shared COT. This assists the initiating terminal in combining the service period of the third terminal (such as other terminals that have unicast (or multicast or broadcast) services with the first terminal's device) to share the preempted COT with the first terminal, enabling the first terminal to use the COT to send data to the third terminal, or to share the preempted COT with the third terminal, enabling the third terminal to use the COT to send data, for example, to send data to the first terminal.

[0216] 3) Time deviation, which indicates the offset of the arrival time of service data relative to subframe #0 of system frame number SFN#0.

[0217] 4) Data packet size.

[0218] 5) The Quality of Service (QoS) flow identifier associated with this service type.

[0219] 6) Business priority.

[0220] 7) The target address of the third terminal; the target address can be the layer 2 address of the third terminal.

[0221] As an example, the first terminal can obtain auxiliary information such as its service type, service period, time deviation, data packet size, QoS flow identifier associated with the service type, and service priority. This allows the initiating terminal to know or estimate the first terminal's service information based on this auxiliary information, thus assisting the initiating terminal in sharing the preempted COT with the first terminal. This ensures that the first terminal can use the shared COT and send data to the initiating terminal, thereby preventing the initiating terminal from sharing the preempted COT with a responding terminal that cannot use the COT.

[0222] As an example, the first terminal can obtain auxiliary information such as the service type, service period, time deviation, data packet size, QoS flow identifier associated with the service type, service priority, and target address of the third terminal. This allows the initiating terminal to know or estimate the service information of the third terminal associated with the first terminal based on this auxiliary information. This assists the initiating terminal in sharing the preempted COT with the first terminal, ensuring that the first terminal can use the shared COT to send data to other terminals besides the initiating terminal. Alternatively, it assists the initiating terminal in sharing the preempted COT with the third terminal, enabling the third terminal to use the COT to send data, for example, to the first terminal. This avoids the initiating terminal sharing the preempted COT with responding terminals that cannot use the COT.

[0223] In other words, the first terminal can notify the second terminal through auxiliary information about the service type and / or target address (such as Layer 2 address) of other destination terminals of the first terminal to support COT sharing. For example, the other destination terminals may be other terminals that have unicast connections with the first terminal, or other terminals that receive the same broadcast or multicast services as the first terminal.

[0224] In one implementation, the auxiliary information can be carried by at least one of the following: a PC5 RRC message; SLMACCE; or SCI. As an example, the first terminal can send the auxiliary information via a PC5 RRC message, where the PC5 RRC message can be an RRCReconfigurationSidelink message. As another example, the first terminal can send the auxiliary information via SLMACCE, or it can also send the auxiliary information via SCI. Alternatively, as yet another example, the first terminal can send the auxiliary information via any two or three combinations of PC5 RRC messages, SLMACCE, and SCI. This disclosure does not limit or elaborate on these methods.

[0225] By implementing the embodiments of this disclosure, the network device configures a transmission period for auxiliary information for the first terminal. The first terminal can periodically send auxiliary information to the second terminal according to this transmission period, assisting the COT initiating terminal in sharing the acquired COT with the first terminal (i.e., the COT responding terminal). The second terminal (i.e., the COT sharing initiating terminal) receives the auxiliary information and determines whether the first terminal meets the conditions for using the shared COT (such as conditions 1 and 2 mentioned above). If the first terminal meets the conditions for using the shared COT, the shared COT initiating terminal can share the COT with the first terminal, i.e., send a shared COT indication message to the first terminal. This allows the first terminal to use the shared COT to send data, thus avoiding the waste of the COT.

[0226] Please see Figure 5 , Figure 5 This is a flowchart illustrating another auxiliary information interaction method provided in an embodiment of this disclosure. It should be noted that this method can be executed by a communication system, which includes a first terminal, a second terminal, and a network device. The interaction process of this communication system may include, but is not limited to, the following steps.

[0227] In step 501, the first terminal determines auxiliary information.

[0228] In one embodiment of this disclosure, the auxiliary information is used to assist the second terminal in sharing the acquired COT with the first terminal.

[0229] In the embodiments of this disclosure, step 501 can be implemented in any of the above embodiments, and no limitation is made here, nor will it be described in detail.

[0230] In step 502, the first terminal sends the auxiliary information.

[0231] Optionally, in some embodiments of this disclosure, the auxiliary information supports periodic reporting. In one possible implementation, step 502 may include, but is not limited to, the following steps: Step 5021, the network device may send first configuration information to the first terminal, the first configuration information including the sending period of the auxiliary information; Step 5022, the first terminal receives the first configuration information; Step 5023, the sending period of the auxiliary information is determined according to the first configuration information; Step 5024, the auxiliary information is periodically sent to the second terminal based on the sending period. It should be noted that steps 5021 and 5022 may be performed before step 501, or steps 5021 and 5022 may be performed after step 502, or steps 5021 and 5022 may be performed simultaneously with step 501. This disclosure does not limit this.

[0232] In the embodiments of this disclosure, step 502 can be implemented in any of the above embodiments, and no limitation is made here, nor will it be described in detail.

[0233] In step 503, the second terminal receives auxiliary information sent by the first terminal.

[0234] In the embodiments of this disclosure, step 503 can be implemented in any of the above embodiments, and no limitation is made here, nor will it be described in detail.

[0235] In step 504, the second terminal shares the acquired COT with the first terminal based on the auxiliary information.

[0236] In one implementation, the second terminal receives the auxiliary information and determines whether the first terminal can meet the conditions for using the shared COT (such as conditions 1 and 2 mentioned above). If the first terminal meets the conditions for using the shared COT, the COT initiating terminal can share the COT with the first terminal, that is, send a shared COT indication message to the first terminal. This allows the COT to be shared with the first terminal that meets the conditions, thus enabling the first terminal to use the COT. This avoids the initiating terminal sharing the preempted COT with a responding terminal that cannot use the COT, thereby avoiding the waste of the COT.

[0237] In the embodiments provided above, the methods provided by the present disclosure have been described from the perspectives of a first terminal, a second terminal, and a network device, respectively. To implement the functions of the methods provided in the embodiments of the present disclosure, the first terminal, the second terminal, and the network device may include hardware structures and software modules, implementing the above functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. One of the above functions can be executed in the form of hardware structures, software modules, or a combination of hardware structures and software modules.

[0238] Please see Figure 6 This is a schematic diagram of the structure of a communication device 60 provided in an embodiment of this disclosure. Figure 6 The communication device 60 shown may include a transceiver module 601 and a processing module 602. The transceiver module 601 may include a sending module and / or a receiving module. The sending module is used to implement the sending function, and the receiving module is used to implement the receiving function. The transceiver module 601 can implement both sending and / or receiving functions.

[0239] The communication device 60 can be an auxiliary information interaction device, which can be a terminal device (such as the first terminal in the aforementioned method embodiments), a device within a terminal device, or a device compatible with the terminal device. Alternatively, the communication device 60 can be an auxiliary information interaction device, which can be a terminal device (such as the second terminal in the aforementioned method embodiments), a device within a terminal device, or a device compatible with the terminal device. Alternatively, the communication device 60 can be a network device, a device within a network device, or a device compatible with the network device.

[0240] The communication device 60 is an auxiliary information interaction device, which can be a terminal device (such as the first terminal in the aforementioned method embodiment): processing module 602, used to determine auxiliary information; wherein, the auxiliary information is used to assist the second terminal in sharing the acquired Channel Occupancy Time (COT) with the auxiliary information interaction device, and the second terminal is the terminal that initiates the sharing of COT; transceiver module 601, used to send auxiliary information to the second terminal.

[0241] In one implementation, the processing module 602 is further configured to: determine a second terminal, wherein the second terminal has a unicast connection with the auxiliary information interaction device.

[0242] In one possible implementation, the reference signal received power (RSRP) of the unicast link between the second terminal and the auxiliary information interaction device is greater than or equal to a predetermined threshold; and / or the auxiliary information interaction device contains sidelink (SL) data to be sent to the second terminal.

[0243] In one implementation, the transceiver module 601 is specifically used to: send auxiliary information to the second terminal via multicast through a target address; wherein the target address is associated with a multicast service configured on the auxiliary information interaction device, and the auxiliary information interaction device and the second terminal are configured with the same multicast service; or, the target address is associated with a multicast service that the auxiliary information interaction device is interested in receiving and / or sending, and the auxiliary information interaction device and the second terminal receive and / or send the same multicast service.

[0244] In one implementation, the transceiver module 601 is specifically used to: broadcast auxiliary information to a second terminal via a target address; wherein the target address is associated with a broadcast service configured on the auxiliary information interaction device, and the auxiliary information interaction device and the second terminal are configured with the same broadcast service; or, the target address is associated with a broadcast service that the auxiliary information interaction device is interested in receiving and / or sending, and the auxiliary information interaction device and the second terminal receive and / or send the same broadcast service.

[0245] In one implementation, the processing module 602 is further configured to: determine the transmission period of auxiliary information; the transceiver module 601 is further configured to: periodically send auxiliary information to the second terminal based on the transmission period.

[0246] In one possible implementation, the transceiver module 601 is further configured to: receive first configuration information sent by the network device; and the processing module 602 is further configured to: determine the sending period of auxiliary information based on the first configuration information.

[0247] In one possible implementation, the processing module 602 is further configured to: determine the sending period of auxiliary information based on the auxiliary information interaction device.

[0248] In one possible implementation, the transceiver module 601 is further configured to: receive second configuration information sent by the second terminal; and the processing module 602 is further configured to: determine the sending period of auxiliary information based on the second configuration information.

[0249] In one implementation, the processing module 602 is further configured to: determine whether the conditions for triggering the reporting auxiliary information event are met.

[0250] In one possible implementation, the triggering condition is at least one of the following: the auxiliary information changes from the last transmitted auxiliary information; a unicast connection is initially established between the auxiliary information interaction device and the second terminal; a multicast service is initially established by the auxiliary information interaction device; or a broadcast service is initially established by the auxiliary information interaction device.

[0251] In one implementation, the transceiver module 601 is further configured to: receive an auxiliary information request sent by the second terminal, the auxiliary information request being used to request the auxiliary information interaction device to send auxiliary information to the second terminal.

[0252] In one possible implementation, the processing module 602 is further configured to: determine that an auxiliary information request has been received; start a timer, wherein the timer is used to control the transmission of auxiliary information; cancel the generation or transmission of auxiliary information during the operation of the timer and if the auxiliary information is successfully transmitted; and stop the timer.

[0253] In one possible implementation, the processing module 602 is further configured to: determine that the auxiliary information request has been received; start a timer, wherein the timer is used to control the transmission of the auxiliary information; determine that the timer has timed out; and cancel the generation or transmission of the auxiliary information.

[0254] In one implementation, the processing module 602 is further configured to: determine that the allocation method of the link transmission resources on the auxiliary information interaction device side is the network dynamic scheduling method, and that the auxiliary information interaction device does not have available SL transmission resources for transmitting auxiliary information; trigger a scheduling request SR, the SR being used to request SL transmission resources for transmitting auxiliary information.

[0255] In one implementation, the auxiliary information includes at least one of the following: service type; service period, which indicates the period during which service data arrives; time offset, which indicates the offset of the service data arrival time relative to subframe #0 of system frame number SFN#0; data packet size; QoS flow identifier associated with the service type; service priority; target address of the third terminal; the third terminal is another terminal that has a unicast connection with the auxiliary information interaction device, or another terminal that receives the same broadcast or multicast service with the auxiliary information interaction device.

[0256] In one implementation, auxiliary information is carried through at least one of the following: a PC5 radio resource control (RRC) message; a Media Access Control (MACCE) element; or a sidelink control information (SCI).

[0257] The communication device 60 is an auxiliary information interaction device, which can be a terminal device (such as the second terminal in the aforementioned method embodiment): the transceiver module 601 is used to receive auxiliary information sent by the first terminal; wherein, the auxiliary information is used to assist the auxiliary information interaction device in sharing the acquired Channel Occupancy Time (COT) with the first terminal, and the auxiliary information interaction device is the terminal that initiates the sharing of COT.

[0258] In one possible implementation, a unicast connection exists between the auxiliary information interaction device and the first terminal.

[0259] In one possible implementation, the reference signal received power (RSRP) of the unicast link between the first terminal and the auxiliary information interaction device is greater than or equal to a predetermined threshold; and / or, the first terminal contains sidelink (SL) data to be sent to the auxiliary information interaction device.

[0260] In one possible implementation, the transceiver module 601 is specifically configured to: receive auxiliary information sent by the first terminal via a target address in multicast mode; wherein the target address is associated with a multicast service configured for the first terminal, and the first terminal and the auxiliary information interaction device are configured with the same multicast service; or, the target address is associated with a multicast service that the first terminal is interested in receiving and / or sending, and the first terminal and the auxiliary information interaction device receive and / or send the same multicast service.

[0261] In one possible implementation, the transceiver module 601 is specifically configured to: receive auxiliary information broadcast by the first terminal via a target address; wherein the target address is associated with a broadcast service configured for the first terminal, and the first terminal and the auxiliary information interaction device are configured with the same broadcast service; or, the target address is associated with a broadcast service that the first terminal is interested in receiving and / or sending, and the first terminal and the auxiliary information interaction device receive and / or send the same broadcast service.

[0262] In one possible implementation, the transceiver module 601 is specifically used to periodically receive auxiliary information sent by the first terminal.

[0263] In one possible implementation, the transceiver module 601 is further configured to: send second configuration information to the first terminal, wherein the second configuration information includes the sending period of auxiliary information.

[0264] In one implementation, the transceiver module 601 is further configured to: send an auxiliary information request to the first terminal, the auxiliary information request being used to request the first terminal to send auxiliary information to the auxiliary information interaction device.

[0265] In one implementation, the auxiliary information includes at least one of the following: service type; service period, which indicates the period during which service data arrives; time offset, which indicates the offset of the service data arrival time relative to subframe #0 of system frame number SFN#0; data packet size; QoS flow identifier associated with the service type; service priority; target address of the third terminal; the third terminal is another terminal that has a unicast connection with the first terminal, or another terminal that receives the same broadcast or multicast service as the first terminal.

[0266] In one implementation, auxiliary information is carried by at least one of the following: PC5 Radio Resource Control (RRC) message; SL Media Access Control (MACCE) element; and Sidelink Control Information (SCI).

[0267] The communication device 60 is a network device: the transceiver module 601 is used to send first configuration information to the first terminal, wherein the first configuration information includes a transmission period for auxiliary information, and the transmission period is used to instruct the first terminal to periodically send auxiliary information to the second terminal; wherein the auxiliary information is used to assist the second terminal in sharing the acquired Channel Occupancy Time (COT) with the first terminal, and the second terminal is the terminal that initiates the sharing of COT.

[0268] In one implementation, the transceiver module 601 is further configured to: receive a scheduling request SR sent by the first terminal, the SR being used to request sidelink SL transmission resources for transmitting auxiliary information; and the processing module 602 is configured to allocate SL transmission resources to the first terminal, the SL transmission resources being used for transmitting auxiliary information.

[0269] In one implementation, the auxiliary information includes at least one of the following: service type; service period, which indicates the period during which service data arrives; time offset, which indicates the offset of the service data arrival time relative to subframe #0 of system frame number SFN#0; data packet size; QoS flow identifier associated with the service type; service priority; target address of the third terminal; the third terminal is another terminal that has a unicast connection with the first terminal, or another terminal that receives the same broadcast or multicast service as the first terminal.

[0270] In one implementation, auxiliary information is carried by at least one of the following: PC5 Radio Resource Control (RRC) message; SL Media Access Control (MACCE) element; and Sidelink Control Information (SCI).

[0271] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0272] Please see Figure 7 , Figure 7 This is a schematic diagram of another communication device 70 provided in this embodiment. The communication device 70 can be a network device, a terminal device (such as the first terminal and the second terminal in the foregoing method embodiments), a chip, chip system, or processor that supports the network device in implementing the above methods, or a chip, chip system, or processor that supports the terminal device in implementing the above methods. This device can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0273] The communication device 70 may include one or more processors 701. The processor 701 may be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control the communication device (e.g., base station, baseband chip, terminal equipment, terminal equipment chip, DU or CU, etc.), execute computer programs, and process data from the computer programs.

[0274] Optionally, the communication device 70 may further include one or more memories 702, on which a computer program 704 may be stored. The processor 701 executes the computer program 704 to cause the communication device 70 to perform the methods described in the above method embodiments. Optionally, the memory 702 may also store data. The communication device 70 and the memory 702 may be provided separately or integrated together.

[0275] Optionally, the communication device 70 may also include a transceiver 705 and an antenna 706. The transceiver 705 may be referred to as a transceiver unit, transceiver, or transceiver circuit, etc., and is used to implement the transmission and reception functions. The transceiver 705 may include a receiver and a transmitter. The receiver may be referred to as a receiver or receiving circuit, etc., and is used to implement the receiving function; the transmitter may be referred to as a transmitter or transmitting circuit, etc., and is used to implement the transmitting function.

[0276] Optionally, the communication device 70 may further include one or more interface circuits 707. The interface circuits 707 are used to receive code instructions and transmit them to the processor 701. The processor 701 executes the code instructions to cause the communication device 70 to perform the methods described in the above method embodiments.

[0277] The communication device 70 is a terminal device (such as the first terminal in the aforementioned method embodiment): the processor 701 is used to execute Figure 2 Step 201 in the middle; or execute Figure 5 Steps 501 and 5023 are described in the text. Transceiver 705 is used to perform... Figure 2 Step 202 in the middle; or execute Figure 5 Steps 502, 5022, and 5024 in the process.

[0278] Communication device 70 is a terminal device (such as the second terminal in the aforementioned method embodiment): transceiver 705 is used to perform... Figure 3 Step 301 in the middle; or execute Figure 5 Step 503; processor 701 is used to execute Figure 5 Step 504 in the process.

[0279] Communication device 70 is a network device: transceiver 705 is used to perform... Figure 4 Step 401 in the middle; or execute Figure 5 Step 5021 in the process.

[0280] In one implementation, the processor 701 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 receiving and transmitting functions may be separate or integrated. The aforementioned transceiver circuit, interface, or interface circuit can be used for reading and writing code / data, or it can be used for transmitting or relaying signals.

[0281] In one implementation, processor 701 may store a computer program that runs on processor 701, causing communication device 70 to perform the methods described in the above method embodiments. The computer program may be embedded in processor 701; in this case, processor 701 may be implemented in hardware.

[0282] In one implementation, the communication device 70 may include circuitry capable of performing the functions of transmitting, receiving, or communicating as described in the foregoing method embodiments. The processor and transceiver described in this disclosure can be implemented on integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application-specific integrated circuits (ASICs), printed circuit boards (PCBs), electronic devices, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductors (CMOS), n-metal-oxide-semiconductor (NMOS), positive-channel metal oxide semiconductors (PMOS), bipolar junction transistors (BJTs), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0283] The communication device described in the above embodiments may be a network device or a terminal device (such as the first terminal and the second terminal in the foregoing method embodiments), but the scope of the communication device described in this disclosure is not limited thereto, and the structure of the communication device may vary. Figure 7 The communication device may be a standalone device or part of a larger device. For example, the communication device may be:

[0284] (1) Independent integrated circuit IC, or chip, or chip system or subsystem;

[0285] (2) A collection of one or more ICs, optionally including storage components for storing data and computer programs;

[0286] (3) ASIC, such as modem;

[0287] (4) Modules that can be embedded in other devices;

[0288] (5) Receivers, terminal equipment, smart terminal equipment, cellular phones, wireless equipment, handheld devices, mobile units, vehicle-mounted equipment, network equipment, cloud equipment, artificial intelligence equipment, etc.

[0289] (6) Others, etc.

[0290] For cases where the communication device can be a chip or a chip system, please refer to [link / reference]. Figure 8 The diagram shows the structure of the chip. Figure 8 The chip shown includes a processor 801 and an interface 802. There can be one or more processors 801, and multiple interfaces 802.

[0291] For cases where the chip is used to implement the functions of the terminal device (such as the first terminal in the aforementioned method embodiments) in this disclosure:

[0292] The processor 801 is used to determine auxiliary information; wherein the auxiliary information is used to assist the second terminal in sharing the acquired COT with the communication device, and the second terminal is the terminal that initiates the sharing of COT; the interface 802 is used to send auxiliary information to the second terminal.

[0293] In one implementation, the processor 801 is further configured to: determine a second terminal, wherein the second terminal has a unicast connection with the communication device.

[0294] In one possible implementation, the reference signal received power RSRP of the unicast link between the second terminal and the communication device is greater than or equal to a predetermined threshold; and / or there is sidelink SL data in the communication device to be sent to the second terminal.

[0295] In one implementation, interface 802 is specifically used to: send auxiliary information to a second terminal via multicast through a target address; wherein the target address is associated with a multicast service configured on the communication device, and the communication device and the second terminal are configured with the same multicast service; or, the target address is associated with a multicast service that the communication device is interested in receiving and / or sending, and the communication device and the second terminal receive and / or send the same multicast service.

[0296] In one implementation, interface 802 is specifically used to: broadcast auxiliary information to a second terminal via a target address; wherein the target address is associated with a broadcast service configured on the communication device, and the communication device and the second terminal are configured with the same broadcast service; or, the target address is associated with a broadcast service that the communication device is interested in receiving and / or sending, and the communication device and the second terminal receive and / or send the same broadcast service.

[0297] In one implementation, the processor 801 is further configured to: determine the transmission period of auxiliary information; and the interface 802 is further configured to: periodically transmit auxiliary information to the second terminal based on the transmission period.

[0298] In one possible implementation, interface 802 is further configured to: receive first configuration information sent by the network device; processor 801 is further configured to: determine the transmission period of auxiliary information based on the first configuration information.

[0299] In one possible implementation, the processor 801 is also used to: determine the transmission period of auxiliary information based on the communication device.

[0300] In one possible implementation, interface 802 is further configured to: receive second configuration information sent by the second terminal; processor 801 is further configured to: determine the sending period of auxiliary information based on the second configuration information.

[0301] In one implementation, the processor 801 is further configured to: determine whether the conditions for triggering the reporting auxiliary information event are met.

[0302] In one possible implementation, the triggering condition is at least one of the following: the auxiliary information changes from the last transmitted auxiliary information; a unicast connection is initially established between the communication device and the second terminal; the communication device initially establishes a multicast service; or the communication device initially establishes a broadcast service.

[0303] In one implementation, interface 802 is further configured to: receive an auxiliary information request sent by a second terminal, the auxiliary information request being used to request the communication device to send auxiliary information to the second terminal.

[0304] In one possible implementation, the processor 801 is further configured to: determine that an auxiliary information request has been received; start a timer, wherein the timer is used to control the transmission of auxiliary information; cancel the generation or transmission of auxiliary information during the operation of the timer and if the auxiliary information is successfully transmitted; and stop the timer.

[0305] In one possible implementation, the processor 801 is further configured to: determine that an auxiliary information request has been received; start a timer, wherein the timer is used to control the transmission of auxiliary information; determine that the timer has timed out; and cancel the generation or transmission of auxiliary information.

[0306] In one implementation, the processor 801 is further configured to: determine that the allocation method of the link transmission resources on the communication device side is the network dynamic scheduling method, and that the communication device does not have available SL transmission resources for transmitting auxiliary information; trigger a scheduling request SR, wherein the SR is used to request SL transmission resources for transmitting auxiliary information.

[0307] In one implementation, the auxiliary information includes at least one of the following: service type; service period, which indicates the period during which service data arrives; time offset, which indicates the offset of the service data arrival time relative to subframe #0 of system frame number SFN#0; data packet size; QoS flow identifier associated with the service type; service priority; target address of the third terminal; the third terminal is another terminal that has a unicast connection with the communication device, or another terminal that receives the same broadcast or multicast service as the communication device.

[0308] In one implementation, auxiliary information is carried through at least one of the following: PC5 radio resource control (RRC) messages between terminals; SL media access control (MACCE) control element; and sidelink control information (SCI).

[0309] For cases where the chip is used to implement the functions of the terminal device (such as the second terminal in the aforementioned method embodiments) in this disclosure:

[0310] Interface 802 is used to receive auxiliary information sent by the first terminal; wherein, the auxiliary information is used to assist the communication device in sharing the acquired Channel Occupancy Time (COT) with the first terminal, and the communication device is the terminal that initiates the sharing of COT.

[0311] In one possible implementation, a unicast connection exists between the communication device and the first terminal.

[0312] In one possible implementation, the reference signal received power RSRP of the unicast link between the first terminal and the communication device is greater than or equal to a predetermined threshold; and / or, the first terminal contains side link SL data to be sent to the communication device.

[0313] In one possible implementation, interface 802 is specifically used to: receive auxiliary information sent by the first terminal via multicast through a target address; wherein the target address is associated with a multicast service configured for the first terminal, and the first terminal and the communication device are configured with the same multicast service; or, the target address is associated with a multicast service that the first terminal is interested in receiving and / or sending, and the first terminal and the communication device receive and / or send the same multicast service.

[0314] In one possible implementation, interface 802 is specifically used to: receive auxiliary information broadcast by the first terminal via a target address; wherein the target address is associated with a broadcast service configured for the first terminal, and the first terminal and the communication device are configured with the same broadcast service; or, the target address is associated with a broadcast service that the first terminal is interested in receiving and / or sending, and the first terminal and the communication device receive and / or send the same broadcast service.

[0315] In one possible implementation, interface 802 is specifically used to periodically receive auxiliary information sent by the first terminal.

[0316] In one possible implementation, interface 802 is further used to: send second configuration information to the first terminal, wherein the second configuration information includes the sending period of auxiliary information.

[0317] In one implementation, interface 802 is further used to: send an auxiliary information request to the first terminal, the auxiliary information request being used to request the first terminal to send auxiliary information to the communication device.

[0318] In one implementation, the auxiliary information includes at least one of the following: service type; service period, which indicates the period during which service data arrives; time offset, which indicates the offset of the service data arrival time relative to subframe #0 of system frame number SFN#0; data packet size; QoS flow identifier associated with the service type; service priority; target address of the third terminal; the third terminal is another terminal that has a unicast connection with the first terminal, or another terminal that receives the same broadcast or multicast service as the first terminal.

[0319] In one implementation, auxiliary information is carried by at least one of the following: PC5 Radio Resource Control (RRC) message; SL Media Access Control (MACCE) element; and Sidelink Control Information (SCI).

[0320] For cases where the chip is used to implement the functions of the network device in the embodiments of this disclosure:

[0321] Interface 802 is used to send first configuration information to a first terminal, wherein the first configuration information includes a transmission period for auxiliary information, and the transmission period is used to instruct the first terminal to periodically send auxiliary information to a second terminal; wherein the auxiliary information is used to assist the second terminal in sharing the acquired Channel Occupancy Time (COT) with the first terminal, and the second terminal is the terminal that initiates the sharing of COT.

[0322] In one implementation, interface 802 is further configured to: receive a scheduling request SR sent by a first terminal, the SR being used to request sidelink SL transmission resources for transmitting auxiliary information; and processor 801 is configured to allocate SL transmission resources to the first terminal, the SL transmission resources being used for transmitting auxiliary information.

[0323] In one implementation, the auxiliary information includes at least one of the following: service type; service period, which indicates the period during which service data arrives; time offset, which indicates the offset of the service data arrival time relative to subframe #0 of system frame number SFN#0; data packet size; QoS flow identifier associated with the service type; service priority; target address of the third terminal; the third terminal is another terminal that has a unicast connection with the first terminal, or another terminal that receives the same broadcast or multicast service as the first terminal.

[0324] In one implementation, auxiliary information is carried by at least one of the following: PC5 Radio Resource Control (RRC) message; SL Media Access Control (MACCE) element; and Sidelink Control Information (SCI).

[0325] Optionally, the chip also includes a memory 803, which is used to store necessary computer programs and data.

[0326] Those skilled in the art will also understand that the various illustrative logical blocks and steps listed in the embodiments of this disclosure can be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented in hardware or software depends on the specific application and the overall system design requirements. Those skilled in the art can implement the described functionality using various methods for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of this disclosure.

[0327] This disclosure also provides a system for determining sidelink duration, the system comprising the aforementioned... Figure 6 The embodiments include a communication device as a terminal device (such as the first terminal in the aforementioned method embodiments) and a communication device as a terminal device (such as the second terminal in the aforementioned method embodiments), or the system includes the aforementioned Figure 7 The embodiments include a communication device as a terminal device (such as the first terminal in the aforementioned method embodiments) and a communication device as a terminal device (such as the second terminal in the aforementioned method embodiments).

[0328] This disclosure also provides a system for determining sidelink duration, the system comprising the aforementioned... Figure 6The embodiments include a communication device as a terminal device (such as the first terminal in the aforementioned method embodiments), a communication device as a terminal device (such as the second terminal in the aforementioned method embodiments), and a communication device as a network device; or, the system includes the aforementioned... Figure 7 The embodiments include a communication device as a terminal device (such as the first terminal in the aforementioned method embodiments), a communication device as a terminal device (such as the second terminal in the aforementioned method embodiments), and a communication device as a network device.

[0329] This disclosure also provides a readable storage medium having instructions stored thereon that, when executed by a computer, implement the functions of any of the above method embodiments.

[0330] This disclosure also provides a computer program product that, when executed by a computer, implements the functions of any of the above method embodiments.

[0331] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as 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 this 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 transferred from one computer-readable storage medium to another. For example, the computer program can be transferred from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVDs)), or semiconductor media (e.g., solid-state disks (SSDs)).

[0332] Those skilled in the art will understand that the various numerical designations such as "first," "second," etc., used in this disclosure are merely for the convenience of description and are not intended to limit the scope of the embodiments of this disclosure, nor do they indicate the order of events.

[0333] At least one of the features described in this disclosure can also be described as one or more, and multiple features can be two, three, four or more, and this disclosure does not impose any limitations. In the embodiments of this disclosure, for a technical feature, the technical features in that technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", etc., and there is no sequential order or size order among the technical features described by "first", "second", "third", "A", "B", "C" and "D".

[0334] The correspondences shown in the tables of this disclosure can be configured or predefined. The values ​​of the information in each table are merely examples and can be configured to other values; this disclosure is not limiting. When configuring the correspondences between information and parameters, it is not necessarily required to configure all the correspondences shown in each table. For example, the correspondences shown in some rows of the tables in this disclosure may not be configured. Furthermore, appropriate modifications and adjustments can be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the headers of the above tables can also use other names that the communication device can understand, and the values ​​or representations of the parameters can also be other values ​​or representations that the communication device can understand. In the implementation of the above tables, other data structures can 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.

[0335] The predefined terms in this disclosure can be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0336] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0337] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0338] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. An auxiliary information interaction method, characterized in that, The method is executed by a first terminal, and the method includes: Determine auxiliary information; wherein, the auxiliary information is used to assist the second terminal in sharing the acquired Channel Occupancy Time (COT) with the first terminal, and the second terminal is the terminal that initiates the sharing of COT; Send the auxiliary information to the second terminal; The method further includes: The system receives an auxiliary information request sent by the second terminal, the auxiliary information request being used to request the first terminal to send the auxiliary information to the second terminal.

2. The method as described in claim 1, characterized in that, The method further includes: The second terminal is determined, wherein the second terminal and the first terminal are connected via unicast.

3. The method as described in claim 2, characterized in that, The reference signal received power (RSRP) of the unicast link between the second terminal and the first terminal is greater than or equal to a predetermined threshold; and / or The first terminal contains sidelink SL data to be sent to the second terminal.

4. The method as described in claim 1, characterized in that, Sending the auxiliary information to the second terminal includes: The auxiliary information is sent to the second terminal via multicast through the target address; Wherein, the target address is associated with the multicast service configured on the first terminal, and the first terminal and the second terminal are configured with the same multicast service; or, The target address is associated with the multicast service that the first terminal is interested in receiving and / or sending, and the first terminal and the second terminal receive and / or send the same multicast service.

5. The method as described in claim 1, characterized in that, Sending the auxiliary information to the second terminal includes: The auxiliary information is broadcast to the second terminal via the target address; Wherein, the target address is associated with the broadcast service configured on the first terminal, and the first terminal and the second terminal are configured with the same broadcast service; or, The target address is associated with the broadcast service that the first terminal is interested in receiving and / or sending, and the first terminal and the second terminal receive and / or send the same broadcast service.

6. The method as described in claim 1, characterized in that, Sending the auxiliary information to the second terminal includes: Determine the transmission period of the auxiliary information; Based on the transmission period, the auxiliary information is periodically sent to the second terminal.

7. The method as described in claim 6, characterized in that, Determining the transmission period of the auxiliary information includes: Receive first configuration information sent by the network device, and determine the transmission period of the auxiliary information based on the first configuration information; or... The sending period of the auxiliary information is determined based on the first terminal; or... The system receives second configuration information sent by the second terminal and determines the sending period of the auxiliary information based on the second configuration information.

8. The method as described in claim 1, characterized in that, The method further includes: Determine if the conditions for triggering the reporting of auxiliary information event are met.

9. The method as described in claim 8, characterized in that, The triggering condition is at least one of the following: The auxiliary information has changed since the last auxiliary information was sent; An initial unicast connection is established between the first terminal and the second terminal; The first terminal initially establishes a multicast service or initially establishes a broadcast service.

10. The method as described in claim 1, characterized in that, The method further includes: It is confirmed that the assistance information request has been received; Start a timer, wherein the timer is used to control the transmission of the auxiliary information; If the auxiliary information is successfully sent during the timer's operation, the generation or transmission of the auxiliary information is cancelled. Stop the timer.

11. The method as described in claim 1, characterized in that, The method further includes: It is confirmed that the assistance information request has been received; Start a timer, wherein the timer is used to control the transmission of the auxiliary information; Determine that the timer has timed out; Cancel the generation or transmission of the auxiliary information.

12. The method according to any one of claims 1 to 11, characterized in that, The method further includes: It is determined that the allocation method of the traverse transmission resources on the first terminal side is the network dynamic scheduling method, and the first terminal does not have any available SL transmission resources for sending the auxiliary information; A scheduling request (SR) is triggered, which requests SL transmission resources for transmitting the auxiliary information.

13. The method according to any one of claims 1 to 11, characterized in that, The auxiliary information includes at least one of the following: Business type; Business cycle, which indicates the cycle in which business data arrives; Time deviation, which indicates the offset of the arrival time of service data relative to the subframe with system frame number 0; Data packet size; Service type associated QoS flow identifier; Business priorities; The target address of the third terminal; the third terminal is another terminal that has a unicast connection with the first terminal, or another terminal that receives the same broadcast or multicast services as the first terminal.

14. The method according to any one of claims 1 to 11, characterized in that, The auxiliary information is carried through at least one of the following: Communication interface PC5 Radio Resource Control (RRC) messages; SL Media Access Control Element (MAC CE); Side Link Control Information (SCI).

15. A method for assisting information interaction, characterized in that, The method is executed by a second terminal, and the method includes: Receive auxiliary information sent by the first terminal; wherein, the auxiliary information is used to assist the second terminal in sharing the acquired Channel Occupancy Time (COT) with the first terminal, and the second terminal is the terminal that initiates the sharing of COT; The method further includes: A request for auxiliary information is sent to the first terminal, the request for auxiliary information being used to request the first terminal to send the auxiliary information to the second terminal.

16. The method as described in claim 15, characterized in that, The second terminal and the first terminal are connected via unicast.

17. The method as described in claim 16, characterized in that, The reference signal received power (RSRP) of the unicast link between the first terminal and the second terminal is greater than or equal to a predetermined threshold; and / or The first terminal contains sidelink SL data to be sent to the second terminal.

18. The method as described in claim 15, characterized in that, The auxiliary information received from the first terminal includes: Receive auxiliary information sent by the first terminal via multicast through the target address; Wherein, the target address is associated with the multicast service configured on the first terminal, and the first terminal and the second terminal are configured with the same multicast service; or, The target address is associated with the multicast service that the first terminal is interested in receiving and / or sending, and the first terminal and the second terminal receive and / or send the same multicast service.

19. The method as described in claim 15, characterized in that, The auxiliary information received from the first terminal includes: Receive auxiliary information broadcast by the first terminal via the target address; Wherein, the target address is associated with the broadcast service configured on the first terminal, and the first terminal and the second terminal are configured with the same broadcast service; or, The target address is associated with the broadcast service that the first terminal is interested in receiving and / or sending, and the first terminal and the second terminal receive and / or send the same broadcast service.

20. The method as described in claim 15, characterized in that, The auxiliary information received from the first terminal includes: It periodically receives auxiliary information sent by the first terminal.

21. The method as described in claim 20, characterized in that, The method further includes: Send second configuration information to the first terminal, wherein the second configuration information includes the sending period of the auxiliary information.

22. The method according to any one of claims 15 to 21, characterized in that, The auxiliary information includes at least one of the following: Business type; Business cycle, which indicates the cycle in which business data arrives; Time deviation, which indicates the offset of the arrival time of service data relative to the subframe with system frame number 0; Data packet size; Service type associated QoS flow identifier; Business priorities; The target address of the third terminal; the third terminal is another terminal that has a unicast connection with the first terminal, or another terminal that receives the same broadcast or multicast services as the first terminal.

23. The method according to any one of claims 15 to 21, characterized in that, The auxiliary information is carried through at least one of the following: Communication interface PC5 Radio Resource Control (RRC) messages; SL Media Access Control Element (MAC CE); Side Link Control Information (SCI).

24. An auxiliary information interaction device, characterized in that, The device is applied to a first terminal, and the device includes: A processing module is used to determine auxiliary information; wherein the auxiliary information is used to assist the second terminal in sharing the acquired Channel Occupancy Time (COT) with the device, and the second terminal is the terminal that initiates the sharing of COT. The transceiver module is used to send the auxiliary information to the second terminal; The transceiver module is also used for: The system receives an auxiliary information request sent by the second terminal, the auxiliary information request being used to request the first terminal to send the auxiliary information to the second terminal.

25. An auxiliary information interaction device, characterized in that, The device is applied to a second terminal, and the device includes: A transceiver module is used to receive auxiliary information sent by a first terminal; wherein the auxiliary information is used to assist the device in sharing the acquired Channel Occupancy Time (COT) with the first terminal, and the device is a device that initiates the sharing of COT. The transceiver module is also used for: A request for auxiliary information is sent to the first terminal, the request for auxiliary information being used to request the first terminal to send the auxiliary information to the second terminal.

26. A communication device, characterized in that, The device includes a processor and a memory, the memory storing a computer program, the processor executing the computer program stored in the memory to cause the device to perform the method as described in any one of claims 1 to 14.

27. A communication device, characterized in that, The device includes a processor and a memory, the memory storing a computer program, the processor executing the computer program stored in the memory to cause the device to perform the method as described in any one of claims 15 to 23.

28. A communication system, characterized in that, include: A first terminal is configured to perform the method as described in any one of claims 1 to 14; A second terminal is used to perform the method as described in any one of claims 15 to 23.

29. A computer-readable storage medium for storing instructions that, when executed, cause the method of any one of claims 1 to 14 to be implemented.

30. A computer-readable storage medium for storing instructions that, when executed, cause the method of any one of claims 15 to 23 to be implemented.

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