WO2022077406A1

WO2022077406A1 - Scheduling method and related apparatus

Info

Publication number: WO2022077406A1
Application number: PCT/CN2020/121331
Authority: WO
Inventors: 何畅; 董蕾; 苏宏家; 郭文婷; 卢磊
Original assignee: 华为技术有限公司
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2022-04-21

Abstract

Provided is a scheduling method, comprising: a first terminal device sending a configuration message to a second terminal device, the configuration message comprising resource information of a first resource or an interval time, wherein the first resource is used for the second terminal device to send a sidelink-buffer status report (SL-BSR), and the interval time is used for instructing the second terminal device to send the SL-BSR by means of a second resource selected by the second terminal device itself within the interval time; and the first terminal device receiving the SL-BSR sent by the second terminal device according to the configuration message.

Description

Scheduling method and related device

technical field

The present application relates to the field of wireless communication technologies, and in particular, to a scheduling method and related devices.

Background technique

In the 5G New Radio (NR) technology, it supports the communication technology of the Internet of Vehicles (new radiovehicle-to-everything, referred to as NR-V2X). V2X communication includes communication between vehicles and anything in the outside world, such as vehicle-to-vehicle communication (Vehicle to Vehicle, referred to as V2V), vehicle-to-pedestrian communication (V2P for short), vehicle-to-infrastructure communication (vehicle to infrastructure, referred to as V2I), vehicle-to-network communication (vehicle to network, referred to as V2N).

The PC5 interface is an interface for communication between a user equipment (user equipment, UE) and the user equipment, and the transmission link in the PC5 interface is defined as a sidelink (sidelink, SL). The user equipment may be a vehicle or other user-side equipment. That is, PC5 can be used for NR-V2X. However, the resource scheduling scheme for SL in NR-V2X is currently unclear.

SUMMARY OF THE INVENTION

The present application provides a scheduling method and related apparatuses, which can realize that in the SL scenario, a terminal device with resource awareness capability configures and sends scheduling messages for other terminal devices.

In a first aspect, the present application provides a scheduling method, and the scheduling method includes:

The first terminal device sends a configuration message to the second terminal device, where the configuration message includes resource information of a first resource or the configuration message includes an interval time, and the first resource is used by the second terminal device to send a sidelink Road-transmission buffer status report SL-BSR, the interval time is used to instruct the second terminal device to send the SL-BSR through the second resource selected by itself within the interval time;

The first terminal device receives the SL-BSR sent by the second terminal device according to the configuration message.

In this way, in the technical solution of the present application, the first terminal device with the resource awareness capability can schedule the second terminal device to report (sidelink buffer status report, SL-BSR) through the configuration message, so that the first terminal device can report according to the second terminal device. The SL-BSR reported by the device selects resources for transmitting service data for the second terminal device.

In some embodiments, the sending the configuration message by the first terminal device to the second terminal device includes: the first terminal device sends the configuration message to the second terminal device through radio resource control of the PC5 interface.

In this way, when the second terminal device does not have the resource awareness capability, the first terminal can send a configuration message to the second terminal device through PC5-RRC, and schedule the second terminal to send the SL-BSR.

In some embodiments, the first resource is further used for the second terminal device to transmit auxiliary information, where the auxiliary information includes one or more of priority information or sub-channel size for transmitting service data. In this way, when the second terminal device does not have the resource awareness capability, the first terminal can send the configuration message including the resource information of the first resource to the second terminal device, so as to schedule the second terminal to use the first resource to send the SL -BSR and auxiliary information.

In some embodiments, the configuration message includes resource information of the first resource, and the method further includes: the first terminal device sends a resource reservation message in a broadcast or multicast manner, where the resource reservation message includes all resource information of the first resource, and the resource reservation message is used to prevent devices other than the second terminal device from using the first resource.

In this way, the first terminal device reserves the first resource through the resource reservation message, and among the terminal devices that receive the reservation message, the terminal devices other than the second terminal device will avoid using or reserve the first resource, which can effectively avoid resources Scheduling conflicts, and improve the reliability of the second terminal equipment to transmit the SL-BSR.

In some embodiments, the second resource is also used for the second terminal device to transmit auxiliary information, where the auxiliary information includes one or more of priority information or sub-channel size for transmitting service data. In this way, the first terminal sends a configuration message to the second terminal device, so as to schedule the second terminal to send the SL-BSR and auxiliary information by using the first resource.

In some embodiments, the auxiliary information is carried in a sidelink media access control control element (SL-MAC-CE).

In certain embodiments, the method further includes:

The first terminal device sends a scheduling message to the second terminal device within a first time period after the second terminal device sends the SL-BSR, where the scheduling message includes resource information of a third resource, and the first terminal device sends a scheduling message to the second terminal device. Three resources are used for the second terminal device to transmit service data.

In this way, the second terminal device can transmit service data according to the scheduling message.

In certain embodiments, the method further includes:

After the first time period after the second terminal device sends the SL-BSR, the first terminal device receives the SL-BSR sent by the second terminal device through a fourth resource, where the fourth resource is the The second terminal device selects randomly, or selects it according to the result of full resource perception or partial resource perception.

In this way, when the second terminal does not receive the scheduling message in time, it can select resources by itself to transmit the service data, so as to avoid untimely scheduling of the first terminal device or failure of signaling transmission between the first terminal device and the second terminal device. It is timely, which leads to a delay in the transmission of service data by the second terminal device using the SL.

In some embodiments, the method further includes: the first terminal device receives the SL-BSR sent by the second terminal device after a first time period after the second terminal device sends the SL-BSR BSR.

In some embodiments, the first terminal device is a group head terminal device, the second terminal device is a member terminal device, the scheduling message includes first-level sidelink control information SCI-1, the The scheduling message also includes one or more secondary sidelink control information SCI-2 corresponding to one or more member terminal devices, each of the one or more SCI-2 corresponding to a member terminal equipment; the SCI-1 is used to indicate that the scheduling information is used by the first terminal equipment to allocate resource information for transmitting services to the one or more member terminal equipments, and each SCI-2 includes the SCI-2 Resource information of the corresponding member terminal equipment for transmitting services.

In a second aspect, an embodiment of the present application further provides a scheduling method, including:

The second terminal device receives a configuration message sent by the first terminal device, where the configuration message includes resource information of a first resource or the configuration message includes an interval time, and the first resource is used by the second terminal device to send a sideline link-transmission buffer status report SL-BSR, where the interval time is used to instruct the second terminal device to send the SL-BSR through the second resource selected by itself within the interval time;

The second terminal device sends the SL-BSR using the first resource.

In some embodiments, the receiving, by the second terminal device, the configuration message sent by the first terminal device includes:

The second terminal device receives the configuration message sent by the first terminal device to the second terminal device through PC5-RRC.

In some embodiments, the first resource is further used for the second terminal to send auxiliary information, where the auxiliary information includes one or more of priority information or sub-channel size for transmitting service data. In this way, the first terminal sends a configuration message to the second terminal device, so as to schedule the second terminal to send the SL-BSR and auxiliary information by using the first resource.

In certain embodiments, the method further includes:

The second terminal device receives scheduling information from the first terminal device within a first time period after sending the SL-BSR, the scheduling message includes resource information of a third resource, and the third resource is used for all The second terminal device transmits service data.

In certain embodiments, the method further includes:

If the second terminal device does not receive the scheduling information from the first terminal device within the first time period after sending the SL-BSR, the second terminal device uses the fourth resource to transmit service data, and the fourth The resource is randomly selected by the second terminal device, or selected according to the result of all or part of the resource perception.

In this way, when the second terminal device does not receive the scheduling message in time, it can select resources by itself to transmit service data, so as to avoid untimely scheduling of the first terminal device or signaling transmission between the first terminal device and the second terminal device. If it is not in time, the second terminal device will delay the transmission of service data by using the SL.

In certain embodiments, the method further includes:

If the second terminal device does not receive scheduling information from the first terminal device within a first time period after sending the SL-BSR, the second terminal device sends the SL-BSR to the first terminal device.

In this way, when the second terminal does not receive the scheduling message in time, the second terminal device sends the SL-BSR to the first terminal device again, so that the first terminal device sends the scheduling information to the second terminal device.

In certain embodiments, the method further includes:

If the second terminal device does not receive the scheduling information from the first terminal device within the first time period after sending the SL-BSR, the second terminal device keeps waiting to receive the scheduling information from the first terminal device.

In this way, a scheduling message can include resource information used for transmitting services of multiple member terminal devices, which can improve the sending efficiency of the scheduling message, thereby improving the resource efficiency.

In some embodiments, the one or more member terminal devices include the second terminal device, and the method further includes: the second terminal device communicates with the second terminal device according to the scheduling message Corresponding SCI-2, obtain resource information for transmitting service data.

In this way, each team member terminal device can obtain resource information for transmitting service data according to the SCI-2 corresponding to itself in the scheduling message.

In a third aspect, the present application also provides a scheduling device, including:

A sending unit, configured to send a configuration message to a second terminal device, where the configuration message includes resource information of a first resource or the configuration message includes an interval time, and the first resource is used for the second terminal device to send a sideline link-transmission buffer status report SL-BSR, where the interval time is used to instruct the second terminal device to send the SL-BSR through the second resource selected by itself within the interval time;

A receiving unit, configured to receive the SL-BSR sent by the second terminal device according to the configuration message.

In this way, in the technical solution of the present application, the first terminal device with the resource awareness capability can schedule the second terminal device to report the SL-BSR through the configuration message, so that the first terminal device can, according to the SL-BSR reported by the second terminal device, A resource for transmitting service data is selected for the second terminal device.

In some embodiments, in the aspect of sending the configuration message to the second terminal device, the sending unit is specifically configured to:

The configuration message is sent to the second terminal device through the radio resource control PC5-RRC of the PC5 interface.

In some embodiments, the first resource is further used for the second terminal device to transmit auxiliary information, where the auxiliary information includes one or more of priority information or sub-channel size for transmitting service data.

In some embodiments, the configuration message includes resource information of the first resource, and the sending unit is further configured to:

A resource reservation message is sent by broadcast or multicast, where the resource reservation message includes resource information of the first resource, and the resource reservation message is used to prevent devices other than the second terminal device from using the first resource. a resource.

In some embodiments, the second resource is also used for the second terminal device to transmit auxiliary information, where the auxiliary information includes one or more of priority information or sub-channel size for transmitting service data.

In some embodiments, the sending unit is also used for:

In some embodiments, the receiving unit is further configured to:

The first terminal device receives the SL-BSR sent by the second terminal device after a first time period after the second terminal device sends the SL-BSR.

In a fourth aspect, the present application also provides a scheduling device, comprising:

a receiving unit, configured to receive a configuration message sent by a first terminal device, where the configuration message includes resource information of a first resource or the configuration message includes an interval time, and the first resource is used for the sending side of the second terminal device uplink-transmission buffer status report SL-BSR, the interval time is used to instruct the second terminal device to send the SL-BSR through the second resource selected by itself within the interval time;

A sending unit, configured to send the SL-BSR by using the first resource.

In some embodiments, in terms of receiving the configuration message sent by the first terminal device, the receiving unit is specifically configured to:

In some embodiments, the first resource is further used for the second terminal to send auxiliary information, where the auxiliary information includes one or more of priority information or sub-channel size for transmitting service data.

In some embodiments, the receiving unit is further configured to:

In some embodiments, the sending unit is also used for:

In some embodiments, the one or more member terminal devices include the second terminal device, and the scheduling apparatus further includes a processing unit configured to correspond to the second terminal device according to the scheduling message SCI-2, to obtain resource information for transmitting business data.

In a fifth aspect, the present application provides a communication device, which is a terminal device or a network device, including a processor and a memory, the memory is used to store computer instructions, and the processor executes the computer program or instructions in the memory, so that the above-mentioned No. The method of any one of the embodiments of one aspect or the second aspect above is performed.

In a sixth aspect, the present application also provides a terminal device, the terminal device includes a processor, a memory, and a transceiver, the transceiver is used for receiving signals or sending signals; the memory is used for storing program codes; The calling program code performs the method of the first aspect or the second aspect. The memory is used to store computer programs or instructions, the processor is used to call and run the computer programs or instructions from the memory, and when the processor executes the computer programs or instructions in the memory, the communication device is made to perform the first aspect or the first aspect above. any one of the methods of the two aspects.

Optionally, there are one or more processors and one or more memories.

Optionally, the memory may be integrated with the processor, or the memory may be provided separately from the processor.

Optionally, the transceiver may include a transmitter (transmitter) and a receiver (receiver).

In a seventh aspect, the present application provides an apparatus, the apparatus includes a processor, the processor is coupled to a memory, and when the processor executes a computer program or instructions in the memory, the method of any one of the embodiments of the first aspect is executed. Optionally, the apparatus further includes a memory. Optionally, the apparatus further includes a communication interface to which the processor is coupled.

In an implementation manner, the apparatus is a terminal device. When the communication device is a terminal device, the communication interface may be a transceiver, or an input/output interface. Optionally, the transceiver may be a transceiver circuit. Alternatively, the input/output interface may be an input/output circuit.

In another implementation, the device is a chip or a system of chips. When the device is a chip or a chip system, the communication interface may be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin or a related circuit, etc. on the chip or a chip system. A processor may also be embodied as a processing circuit or a logic circuit.

In an eighth aspect, the present application provides a communication device, the communication device includes a processor and an interface circuit, the interface circuit is used to receive code instructions and transmit them to the processor; the processor runs the code instructions to execute the above-mentioned first aspect or the above-mentioned second aspect A method in any of the possible implementations of an aspect.

In a ninth aspect, the present application provides a system, where the system includes the above-mentioned terminal device and network device.

In a tenth aspect, the present application provides a computer program product, the computer program product includes: a computer program (also referred to as code, or instructions), when the computer program is run, the computer executes the above-mentioned first aspect or the above-mentioned second aspect A method in any of the possible implementations of an aspect.

In an eleventh aspect, the present application provides a computer-readable storage medium, where the computer-readable medium stores a computer program (also referred to as code, or instruction), when it runs on a computer, so that the computer executes the above-mentioned first aspect Or the method in any possible implementation manner of the second aspect above.

In a twelfth aspect, the present application further provides a chip, including: a processor and an interface for executing a computer program or instruction stored in a memory to execute any of the possible implementations of the first aspect or the second aspect. Methods.

Description of drawings

In order to illustrate the embodiments of the present application or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the embodiments.

FIG. 1 is a schematic diagram of a process for a terminal device to perceive resources according to an embodiment of the present application;

2A is a network architecture diagram of a communication network involved in the application;

FIG. 2B is a schematic structural diagram of a communication device according to an embodiment of the present application;

2C is a schematic structural diagram of a chip or a chip system involved in an embodiment of the present application;

FIG. 3 is a schematic diagram of a scenario of resource scheduling;

FIG. 4 is a schematic flowchart of a scheduling method involved in an embodiment of the present application;

FIG. 5A is another schematic flowchart of a scheduling method involved in an embodiment of the present application;

FIG. 5B is another schematic flowchart of the scheduling method involved in the embodiment of the present application;

5C is a schematic process diagram of a scheduling method involved in an embodiment of the present application;

FIG. 5D is still another schematic flowchart of the scheduling method involved in the embodiment of the present application;

FIG. 6 is still another schematic flowchart of the scheduling method involved in the embodiment of the present application;

FIG. 7 is a schematic structural diagram of a scheduling message involved in an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a scheduling apparatus according to an embodiment of the present application;

FIG. 9 is another schematic structural diagram of a scheduling apparatus according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described clearly and in detail below with reference to the accompanying drawings. Wherein, in the description of the embodiments of the present application, unless otherwise specified, “/” means or, for example, A/B can mean A or B; “and/or” in the text is only a description of an associated object The association relationship of , indicates that there can be three kinds of relationships, for example, A and/or B, can indicate that A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "plurality" refers to two or more than two.

Hereinafter, the terms "first" and "second" are only used for descriptive purposes, and should not be understood as implying or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first", "second" may expressly or implicitly include one or more of that feature. In the description of the embodiments of the present application, unless otherwise specified, "plurality" means two or more.

The technical solutions of the embodiments of the present application can be applied to various communication systems. For example: long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) system, 5th generation (5G) system Or a new radio (NR), or a next-generation communication system, such as 6G, etc. The 5G mobile communication system involved in this application includes a non-standalone (NSA) 5G mobile communication system or an independent network (standalone, SA) 5G mobile communication system. The technical solutions provided in this application can also be applied to future communication systems, such as the sixth generation mobile communication system. The communication system may also be a device-to-device (D2D) communication system, a machine-to-machine (M2M) communication system, an Internet of Things (IoT), an Internet of Vehicles communication system, or other communication systems. system.

Regarding resource allocation for SL transmission, there are two modes:

In mode 1 (mode 1) resource allocation mode, the time-frequency resources used for SL transmission are centrally scheduled by the gNB.

In the resource allocation mode in mode 2 (mode 2), the time-frequency resources used for SL transmission are obtained by the terminal device by sensing the occupancy of the surrounding time-frequency resources, and then selecting from the configured or pre-configured resource pool. In mode 2, the terminal device can select the time-frequency resource used for SL transmission based on its own perception; the terminal device with resource awareness capability can also assist other terminal devices to select the time-frequency resource used for SL transmission.

Mode 2 includes 4 sub-modes:

Sub-mode a (Mode 2(a)): The terminal device selects the time-frequency resources used for SL transmission based on its own perception. In Mode2(a), as shown in FIG. 1 , a schematic diagram of the process of perceiving resources by a terminal device, the process of perceiving resources by a terminal device includes the following steps:

(1), in time slot n, the upper layer of the UE triggers the physical layer to select time-frequency resources for the primary sidelink physical layer control channel (Physical Sidelink Control Channel, PSCCH)/PSSCH transmission, and provides high-level parameters, the high-level parameters Including the identification of the resource pool, the priority of the PSCCH/sidelink physical layer shared channel (Physical Sidelink Share Channel, PSSCH) transmission once;

(2) The UE monitors the Sidelink Control Information (SCI) sent by other UEs in the resource pool within the sensing window [n-T ₀ ,n-T _proc,0 ];

(3) The UE perceives the use of time-frequency resources within the selection window [n+T ₁ , n+T ₂ ] according to the listening result, excluding the reason that it has been reserved for use by other UEs, or may be occupied by other UEs, etc. For the time-frequency resources that cannot be used, the set of remaining candidate single-slot resources is denoted as S _A ;

(4), the physical layer of the UE reports the set _SA to the upper layer of the UE;

(5) The upper layer of the UE obtains the time-frequency resources used for the one PSCCH/ _PSSCH transmission according to the set SA.

Sub-mode b (Mode 2(b)): Terminal equipment with resource awareness also assists other terminal equipment in selecting time-frequency resources used for SL transmission.

Sub-mode c (Mode 2(c)): The terminal device selects the time-frequency resources used for SL transmission according to one or more SL transmission patterns in the configured or pre-configured resource pool.

Sub-mode d (Mode 2(d)): The time-frequency resources used by the terminal equipment for SL transmission are determined and selected by the terminal equipment with resource scheduling capability.

In sub-modes b, c, and d, the terminal device may perceive resources in the manner in which the terminal perceives resources in sub-mode a.

As shown in FIG. 2A , FIG. 2A is a network architecture diagram of a communication network involved in an embodiment of the application, where the communication network includes a first terminal device and a second terminal device. The first terminal device can be understood as a terminal device used to assist the second terminal device to select time-frequency resources used for SL transmission; the second terminal device can be understood as a terminal device that needs to use time-frequency resources for SL transmission.

In this embodiment of the present application, the first terminal device and/or the second terminal device may be a mobile phone, a tablet computer, a computer with a wireless transceiver function, a virtual reality terminal, an augmented reality terminal, a wireless terminal in industrial control, an unmanned vehicle Wireless terminals in remote surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, etc. The first terminal device and the second terminal device may be the same type of terminal device, or may be different terminal devices. For example, the first terminal pole device may be a mobile phone, and the second terminal device may be a wireless terminal in unmanned driving. For another example, the first terminal and the second terminal are both wireless terminals that may be unmanned.

As an example and not a limitation, in the embodiments of this application, a wearable device may also be referred to as a wearable smart device, which is a general term for intelligently designing daily wearable devices and developing wearable devices using wearable technology, such as glasses, Gloves, watches, clothing and shoes, etc. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets, smart jewelry, etc. for physical sign monitoring.

In addition, in the embodiment of the present application, the terminal may also be a terminal in an internet of things (IoT) system. IoT is an important part of the future development of information technology. connection, so as to realize the intelligent network of human-machine interconnection and the interconnection of things. In the embodiments of the present application, the IOT technology can achieve massive connections, deep coverage, and terminal power saving through, for example, a narrow band (narrow band, NB) technology.

In addition, in the embodiment of the present application, the terminal may also include sensors such as smart printers, train detectors, and gas stations, and the main functions include collecting data (part of the terminals), receiving control information and downlink data of access network devices, and sending electromagnetic waves. , and transmit uplink data to the access network equipment.

The related functions of the first terminal device and the second terminal device in the embodiments of the present application may be implemented by the terminal device 200 in FIG. 2B . FIG. 2B is a schematic structural diagram of a communication apparatus 200 provided by an embodiment of the present application. As shown in FIG. 2B , the communication apparatus 200 may include: a processor 201 , a transceiver 205 , and optionally a memory 202 .

The transceiver 205 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, etc., for implementing a transceiver function. The transceiver 205 may include a receiver and a transmitter, the receiver may be called a receiver or a receiving circuit, etc., for implementing a receiving function; the transmitter may be called a transmitter or a transmitting circuit, etc., for implementing a transmitting function.

Stored in memory 202 may be a computer program or software code or instructions 204, which may also be referred to as firmware. The processor 201 can control the MAC layer and the PHY layer by running the computer program or software code or instruction 203 therein, or by calling the computer program or software code or instruction 204 stored in the memory 202, so as to realize the following aspects of the present application. The signal transmission method provided by the embodiment. Wherein, the processor 201 can be a central processing unit (central processing unit, CPU), and the memory 202 can be, for example, a read-only memory (read-only memory, ROM), or a random access memory (random access memory, RAM).

The processor 201 and transceiver 205 described in this application may be implemented in integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application specific integrated circuits (ASICs), printed circuits board (printed circuit board, PCB), electronic equipment, etc.

The above-mentioned communication apparatus 200 may further include an antenna 206, and each module included in the communication apparatus 200 is only for illustration, which is not limited in this application.

As mentioned above, the communication apparatus 200 described in the above embodiments may be network equipment or terminal equipment, but the scope of the communication apparatus described in this application is not limited thereto, and the structure of the communication apparatus may not be limited by FIG. 2B . The communication apparatus may be a stand-alone device or may be part of a larger device. For example, the implementation form of the communication device may be:

(1) Independent integrated circuit IC, or chip, or, chip system or subsystem; (2) A set of one or more ICs, optionally, the IC set may also include storage for storing data and instructions components; (3) modules that can be embedded in other devices; (4) receivers, smart terminals, wireless devices, handsets, mobile units, in-vehicle devices, cloud devices, artificial intelligence devices, etc.; (5) others, etc. .

For the case where the implementation form of the communication device is a chip or a chip system, reference may be made to the schematic structural diagram of the chip shown in FIG. 2C . The chip shown in Figure 2C includes a processor and an interface. The number of processors may be one or more, and the number of interfaces may be multiple. Interfaces are used for signal reception and transmission. Optionally, the chip or chip system may include memory. The memory is used to store the necessary program instructions and data of the chip or chip system.

The examples of this application do not limit the protection scope and applicability of the claims. Those skilled in the art may make adaptive changes to the functions and deployment of the elements involved in the present application, or omit, substitute or add various processes or components as appropriate, without departing from the scope of the embodiments of the present application.

The first terminal device has the resource perception capability, and the second terminal device may or may not have the perception capability.

The first terminal device may also be referred to as a head terminal device, and the second terminal device may be referred to as a member terminal device.

Based on the resource allocation mode of Mode 2(d) of Mode 2, when the member terminal device has data to send, the member terminal device first sends a data transmission request to the group head terminal device. After the group head terminal device receives the transmission request, it sends a scheduling message of the resource selected according to the resources it perceives to the group member terminal device. The group member terminal equipment transmits service data according to the resources indicated by the scheduling message sent by the group head terminal equipment. For example, as shown in the schematic diagram of the scenario shown in FIG. 3 , the communication system includes one group head terminal device and three group member terminal devices. The three group member terminal devices are terminal device A, terminal device B, and terminal device C, respectively. The group head terminal equipment can schedule the group member equipment to perform SL transmission according to the perceived resources. As shown in Figure 3, the group head terminal equipment can schedule the group member terminal equipment to use resource 1 for SL transmission, the group member terminal equipment B to use the resource 2 for SL transmission, and the group member terminal equipment C to use the resource according to the perceived resources. 3. Perform SL transmission.

However, in the related art, there is no solution on how a terminal device with resource awareness capability implements a solution for configuring resources for other terminal devices.

The present application provides a detailed scheduling scheme for a terminal device with resource awareness capability to configure and send related scheduling messages to other terminal devices. The technical solution of the present application will be described in detail below with reference to the embodiments of the scheduling method of the present application.

As shown in the schematic flowchart shown in FIG. 4 , based on the network architecture shown in FIG. 1 , the scheduling method in the embodiment of the present application includes:

402. The first terminal device sends a configuration message to the second terminal device, where the configuration message is used to schedule the second terminal to send a sidelink-transmission buffer status report (sidelink buffer status report, SL-BSR);

Correspondingly, the second terminal device receives the configuration message.

The first terminal device has the resource perception capability, and the second terminal device may or may not have the perception capability. The first terminal device may also be referred to as a head terminal device or a scheduling terminal device, and the second terminal device may be referred to as a member terminal device or a group member terminal device.

The first terminal device may send a configuration message to the second terminal device through a radio resource control (radio resource control, RRC) PC5-RRC connection of the PC5 interface.

It should be understood that the first terminal device needs to configure resources for transmitting service data for the second terminal device according to the SL-BSR reported by the second terminal device. For the two possible situations of whether the second terminal device selects the resources for the SL-BSR by itself, the present application provides scheme 1 and scheme 2 respectively.

Scheme 1 corresponds to the situation in which the second terminal device does not select resources for sending the SL-BSR by itself. In solution 1, the first terminal device senses the resources and schedules the second terminal device to transmit the SL-BSR. In this case, the configuration message includes resource information of the first resource. The first resource is used for the second terminal device to send the sidelink-transmission buffer status report SL-BSR. For example, the first terminal device may use, but is not limited to, use the manner in which the terminal device perceives resources in the above sub-mode a to sense resources, and select the first resources from them.

Scheme 2 corresponds to the situation in which the second terminal device selects resources for sending the SL-BSR by itself. In solution 2, the first terminal device schedules the interval time at which the second terminal device reports the SL-BSR. In this case, the configuration message includes a gap time (gap). The interval time is used to instruct the second terminal device to send the SL-BSR through the second resource selected by itself within the interval time.

Optionally, the first resource is also used for the second terminal device to transmit auxiliary information.

Optionally, the interval time is further used to instruct the second terminal device to send auxiliary information related to resource scheduling to the first terminal device within the interval time.

The second terminal device transmits the SL-BSR and the auxiliary information in the same signaling. The auxiliary information is auxiliary information used to assist the first terminal device in resource scheduling. The auxiliary information includes at least one of priority information or sub-channel size of the transmission traffic. The auxiliary information may be carried in a sidelink media access control layer control element (sidelink media access control control element, SL-MAC-CE).

The specific message carried in the auxiliary information may be pre-configured or configured in a configuration message.

404. The second terminal device sends the SL-BSR to the first terminal according to the configuration message.

Correspondingly, the first terminal device receives the SL-BSR from the second terminal device.

For example, the first terminal device may use, but is not limited to, use the manner in which the terminal device perceives resources in the above sub-mode a to sense resources, and then select the second terminal device to select resources for transmitting service data.

The technical solutions of the present application are described in detail below with respect to the above-mentioned solution 1 and solution 2 respectively.

As shown in the schematic flowchart shown in FIG. 5A , based on the above solution 1, in the case that the second terminal device does not select resources for sending SL-BSR by itself, the scheduling method includes the following steps:

501. The first terminal device sends a configuration message to the second terminal device;

The configuration message is used to schedule the second terminal to send the sidelink-transmission buffer status report SL-BSR; the configuration message includes resource information of the first resource.

502. The first terminal device sends a resource reservation message in the form of broadcast or multicast;

The resource reservation message includes resource information of the first resource, and the resource reservation message is used to prevent devices other than the second terminal device from using the first resource.

It can be understood that the resource reservation message is used to reserve the first resource, so as to prevent the terminal device other than the second terminal device from using or reserving the first resource.

503. The second terminal device sends the SL-BSR to the first terminal according to the configuration message.

Specifically, the second terminal device sends the SL-BSR to the first terminal device by using the first resource.

Optionally, the second terminal device further sends auxiliary information to the first terminal device by using the first resource, where the auxiliary information is used to assist the first terminal device in scheduling resources. Optionally, the auxiliary information includes at least one of priority information for reporting the SL-BSR and subchannel size.

It can be seen that, in this embodiment, the first terminal device reserves the first resource through the resource reservation message, and among the terminal devices that receive the reservation message, the terminal devices other than the second terminal device will avoid using or reserve the first resource. resources, can effectively avoid resource scheduling conflicts, and improve the reliability of the second terminal equipment to transmit the SL-BSR.

In an optional embodiment, as shown in the schematic flowchart of FIG. 5B , the scheduling method further includes:

504. The second terminal device detects whether a scheduling message from the first terminal device is received within a first time period after sending the SL-BSR;

The scheduling message includes resource information of the third resource, and the third resource is used for the second terminal device to transmit service data.

The first duration may be the duration specified by the standard, or the duration configured by the first terminal device through the configuration message in step 501, or may be the duration preconfigured by the communication system. This application does not limit the configuration scheme of the first duration.

It should be understood that, as shown in FIG. 5C , after receiving the SL-BSR reported by the second terminal device, the first terminal device will send a scheduling message to the second terminal within the first time period. Or, after receiving the SL-BSR and the auxiliary information reported by the second terminal device, the first terminal device will send the scheduling message to the second terminal within the first time period.

For example, the first terminal device may use, but is not limited to, use the manner in which the terminal device perceives the resources in the foregoing sub-mode a to sense the resources, and select the third resource therefrom.

505. If yes, the second terminal device transmits the service data by using the resource indicated by the resource information in the scheduling message.

506. If not, the second terminal device randomly selects resources to transmit service data.

Specifically, the second terminal device may transmit service data to the third terminal device.

The third terminal device and the first terminal device may be the same terminal device, or may be different terminal devices.

That is to say, if the second terminal device does not receive the scheduling message from the first terminal device within the first time period, resources will be randomly selected to transmit service data.

In this way, in the solution of the present application, the second terminal device detects whether it has received the scheduling message from the first terminal within the first time period after sending the SL-BSR, and if it does not receive it, it randomly selects resources to transmit service data to avoid Due to the untimely scheduling of the first terminal equipment or the untimely signaling transmission between the first terminal equipment and the second terminal equipment, the second terminal equipment delays the transmission of service data by using the SL.

In another optional embodiment, as shown in the schematic flowchart shown in FIG. 5D , the scheduling method includes steps 501-505, and step 507: the second terminal device sends the SL-BSR again.

In this way, if the second terminal device detects that it has not received the scheduling message from the first terminal within the first time period after sending the SL-BSR, the second terminal device sends the SL-BSR to the first terminal device again to request the first terminal The device performs resource scheduling and sends scheduling messages.

It should be understood that if the second terminal device detects that the scheduling message from the first terminal is not received within the first time period after sending the SL-BSR, the second terminal device may also continue to wait. The second terminal device detects that the scheduling message from the first terminal is not received within the first time period after sending the SL-BSR. There are many possible processing methods of the second terminal device, which are not specifically limited in this application.

As shown in the schematic flowchart shown in FIG. 6, based on the above solution 2, in the case that the second terminal selects the resources for sending the SL-BSR by itself, the scheduling method includes the following steps:

601. The first terminal device sends a configuration message to the second terminal device;

The configuration message is used to schedule the second terminal to send the sidelink-transmission buffer status report SL-BSR; the configuration message includes a gap time (gap). The interval time is used to instruct the second terminal device to send the SL-BSR through the second resource selected by itself within the interval time.

602. The second terminal device sends the SL-BSR to the first terminal device within the interval in the configuration message.

Correspondingly, the second terminal device receives the SL-BSR from the first terminal device within the interval in the configuration message.

Optionally, the second terminal device further sends auxiliary information to the first group of terminal devices within the interval, where the auxiliary information is used to assist the first terminal device in scheduling resources. Optionally, the auxiliary information includes at least one of priority information for reporting the SL-BSR and subchannel size.

603. The second terminal device detects whether a scheduling message from the first terminal device is received within a first time period after sending the SL-BSR;

For the relevant description and explanation of the first duration, please refer to the relevant description in the above-mentioned embodiments corresponding to FIG. 5A to FIG. 5C , and the description will not be repeated here.

604. If yes, the second terminal device transmits the service data by using the resource indicated by the resource information in the scheduling message.

605. If not, the second terminal device selects a resource to transmit service data.

Optionally, the second terminal device may select a resource to transmit service data by randomly selecting. The second terminal device may also select resources by itself to transmit service data according to a result of full sensing or partial sensing of resources.

In this way, when the second terminal device does not receive a scheduling message from the first terminal device within the first time period after sending the SL-BSR, the second terminal device selects resources for transmitting service data by itself, which can ensure that the second terminal device It can transmit in a more timely manner, can improve the utilization efficiency of the overall resources, reduce the waiting time of scheduling messages, thus improve the service transmission efficiency of SL, and effectively avoid the untimely scheduling of the first terminal equipment or the connection between the first terminal equipment and the second terminal equipment. The signaling transmission between the devices is not timely, which leads to a delay in the transmission of service data by the second terminal device using the SL.

Based on the foregoing embodiment, the embodiment of the present application further provides a structure of a scheduling message.

The scheduling message is sent by one group head terminal device to multiple member terminal devices.

The scheduling message includes first-level sidelink control information (SCI), and multiple second-level SCIs. The first-level SCI can be recorded as SCI-1, and the second-level SCI can be recorded as SCI-2.

SCI-1 is used to indicate to devices in the network system that the resources indicated in SCI-2 are reserved. SCI-1 can also be used to indicate the resource scheduling type of the scheduling message.

For example, SCI-1 includes 1 bit to indicate the resource scheduling type of the scheduling message and to indicate that the resources indicated in SCI-2 are reserved. "1" can be used to indicate that the resource scheduling type of the scheduling message is mode2 and that the resource indicated in SCI-2 is reserved. Alternatively, "1" may be used to indicate that the resource scheduling type of the scheduling message is a specific sub-mode (eg, sub-mode d) in mode2 and that the resource indicated in SCI-2 is reserved. In other words, "1" indicates that the resource scheduling type of the scheduling message is a specific sub-mode (eg, sub-mode d) in mode2 and indicates that SCI-2 is used for member terminal devices to obtain corresponding resource scheduling information.

Each SCI-2 corresponds to a member terminal device. The scheduling information of each member terminal device is carried in the scheduling message received by the member terminal device, in the SCI-2 corresponding to the second terminal device. For example, in this application, the scheduling message includes resource information of the third resource used by the second terminal device to transmit service data, then each second terminal device can obtain the third resource from the SCI-2 corresponding to the second terminal device. The second terminal device transmits the resource information of the third resource of the service data.

For example, the group member terminal devices include terminal device A, terminal device B, and terminal device C. As shown in Fig. 7 is a schematic structural diagram of a scheduling message, the scheduling message sent by the first terminal device to terminal device A, terminal device B, and terminal device C includes SCI-1, and SCI-1 is used to send devices in the network system Indicates that the resources indicated in SCI-2 are reserved. The scheduling message sent by the first terminal device to terminal device A, terminal device B, and terminal device C further includes SCI-2 corresponding to terminal device A, SCI-2 corresponding to terminal device B, and SCI-2 corresponding to terminal device C . The SCI-2 corresponding to the terminal device A includes the resource information of the resources that the terminal device A transmits service data; the SCI-2 corresponding to the terminal device B includes the resource information of the resources that the terminal device B transmits service data; the SCI-2 corresponding to the terminal device C Including resource information of the resource that the terminal device C transmits the service data.

Optionally, each SCI-2 may further include the identifier of the member terminal device corresponding to the SCI-2. In this way, the member terminal equipment can identify its corresponding SCI-2 according to the identifier in the SCI-2, and obtain its own resource scheduling information.

Alternatively, the SCI-1 may include indication information indicating the correspondence between each SCI-2 and each member terminal device.

It should be understood that the present application does not limit the indication manner of indicating the correspondence between each SCI-2 and each second terminal device in the scheduling message.

The configuration message in any of the foregoing embodiments may also be understood as a scheduling message. Therefore, the configuration message in any of the above embodiments may also adopt the above structure.

Each SCI-2 corresponds to a second terminal device. The scheduling information for sending the SL-BSR corresponding to each terminal device is carried in the scheduling message received by the second terminal device, in the SCI-2 corresponding to the second terminal device.

For example, the second terminal device includes terminal device A, terminal device B, and terminal device C. The configuration message sent by the first terminal device to terminal device A, terminal device B and terminal device C includes SCI-1, and SCI-1 is used to indicate to devices in the network system that the resources indicated in SCI-2 are reserved. The configuration message sent by the first terminal device to terminal device A, terminal device B, and terminal device C further includes the SCI-2 corresponding to terminal device A, the SCI-2 corresponding to terminal device B, and the SCI-2 corresponding to terminal device C . The SCI-2 corresponding to the terminal device A includes the resource information of the first resource that the terminal device A sends the SL-BSR or includes the interval time for scheduling the terminal device A to send the SL-BSR; the SCI-2 corresponding to the terminal device B includes the information sent by the terminal device B. The resource information of the first resource of the SL-BSR may include the time interval at which the terminal device B sends the SL-BSR; The interval at which the terminal device C sends the SL-BSR.

Optionally, the auxiliary information in the foregoing embodiment may be carried in SCI-1 or SCI-2 of the configuration message.

FIG. 8 is a schematic structural diagram of a scheduling apparatus. In a third aspect, an embodiment of the present application further provides a scheduling apparatus 800, including:

A sending unit 801, configured to send a configuration message to a second terminal device, where the configuration message includes resource information of a first resource or the configuration message includes an interval time, and the first resource is used for the sending side of the second terminal device uplink-transmission buffer status report SL-BSR, the interval time is used to instruct the second terminal device to send the SL-BSR through the second resource selected by itself within the interval time;

A receiving unit 802, configured to receive the SL-BSR sent by the second terminal device according to the configuration message.

In some embodiments, in the aspect of sending the configuration message to the second terminal device, the sending unit 801 is specifically configured to:

In some embodiments, the configuration message includes resource information of the first resource, and the sending unit 801 is further configured to:

In some embodiments, the second resource is further used for the second terminal device to transmit auxiliary information, where the auxiliary information includes one or more of priority information or sub-channel size for transmitting service data.

In some embodiments, the sending unit 801 is further configured to:

In some embodiments, the receiving unit 802 is further configured to:

As shown in the schematic structural diagram of the scheduling device as shown in FIG. 9, the present application further provides a scheduling device 900, including:

A receiving unit 901, configured to receive a configuration message sent by a first terminal device, where the configuration message includes resource information of a first resource or the configuration message includes an interval time, and the first resource is used for sending by the second terminal device Sidelink-transmission buffer status report SL-BSR, the interval time is used to instruct the second terminal device to send the SL-BSR through the second resource selected by itself within the interval time;

A sending unit 902, configured to send the SL-BSR by using the first resource.

In some embodiments, in terms of receiving the configuration message sent by the first terminal device, the receiving unit 901 is specifically configured to:

In some embodiments, the receiving unit 901 is further configured to:

In some embodiments, the sending unit 902 is further configured to:

If the second terminal device does not receive the scheduling information from the first terminal device within the first time period after sending the SL-BSR, the second terminal device uses the fourth resource to transmit service data, and the fourth The resource is randomly selected by the second terminal device, or selected according to the result of all resource sensing or partial resource sensing.

In some embodiments, the sending unit 902 is further configured to:

The present application provides a computer-readable storage medium, where computer instructions are stored in the computer-readable storage medium, and the computer instructions instruct a terminal device to execute the scheduling method in any of the foregoing embodiments.

It should be understood that the processor mentioned in the embodiments of the present application may be a central processing unit (Central Processing Unit, CPU), and may also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application-specific integrated circuits ( Application Specific Integrated Circuit, ASIC), off-the-shelf Programmable Gate Array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It should also be understood that the memory mentioned in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Wherein, the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically programmable read-only memory (Erasable PROM, EPROM). Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory may be Random Access Memory (RAM), which acts as an external cache. By way of illustration and not limitation, many forms of RAM are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synchlink DRAM, SLDRAM) ) and direct memory bus random access memory (Direct Rambus RAM, DR RAM).

It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components, the memory (storage module) is integrated in the processor.

It should be noted that the memory described herein is intended to include, but not be limited to, these and any other suitable types of memory.

It should be understood that, in various embodiments of the present application, the size of the sequence numbers of the above-mentioned processes does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, and should not be dealt with in the embodiments of the present application. implementation constitutes any limitation.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example 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 performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods, for example, multiple units or components may be combined or integrated. to another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

Units described as separate components may or may not be physically separated, and components shown as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

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

The functions, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods of the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

The steps in the method of the embodiment of the present application may be adjusted, combined and deleted in sequence according to actual needs.

The modules in the apparatus of the embodiment of the present application may be combined, divided and deleted according to actual needs.

As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand: The technical solutions described in the embodiments are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

A scheduling method, comprising:

The first terminal device sends a configuration message to the second terminal device, where the configuration message includes resource information of a first resource or the configuration message includes an interval time, and the first resource is used by the second terminal device to send a sidelink Road-transmission buffer status report SL-BSR, the interval time is used to instruct the second terminal device to send the SL-BSR through the second resource selected by itself within the interval time;

The first terminal device receives the SL-BSR sent by the second terminal device according to the configuration message.
The method according to claim 1, wherein the sending, by the first terminal device, a configuration message to the second terminal device comprises:

The first terminal device sends a configuration message to the second terminal device through the radio resource control PC5-RRC of the PC5 interface.
The method according to claim 1, wherein the first resource is further used for the second terminal device to transmit auxiliary information, and the auxiliary information includes one of priority information for transmitting service data or sub-channel size. one or more.
The method according to claim 1 or 2, wherein the configuration message includes resource information of the first resource, and the method further comprises:

The first terminal device sends a resource reservation message in a broadcast or multicast manner, where the resource reservation message includes resource information of the first resource, and the resource reservation message is used to prevent the second terminal device from The device uses the first resource.
The method according to claim 1, wherein the second resource is further used for the second terminal device to transmit auxiliary information, and the auxiliary information includes one of priority information for transmitting service data or sub-channel size. one or more.
The method according to claim 3 or 5, wherein the auxiliary information is carried in a sidelink medium access control layer control element SL-MAC-CE.
The method according to any one of claims 1-6, wherein the method further comprises:

The first terminal device sends a scheduling message to the second terminal device within a first time period after the second terminal device sends the SL-BSR, where the scheduling message includes resource information of a third resource, and the first terminal device sends a scheduling message to the second terminal device. Three resources are used for the second terminal device to transmit service data; or

After the first time period after the second terminal device sends the SL-BSR, the first terminal device receives the SL-BSR sent by the second terminal device through a fourth resource, where the fourth resource is the The second terminal device is randomly selected, or selected according to the result of all resource perception or resource part perception; or

The first terminal device receives the SL-BSR sent by the second terminal device after a first time period after the second terminal device sends the SL-BSR.
The method according to claim 7, wherein the first terminal device is a group head terminal device, the second terminal device is a member terminal device, and the scheduling message includes first-level sidelink control information SCI-1, the scheduling message further includes one or more second-level sidelink control information SCI-2 corresponding to one or more member terminal devices, each of the one or more SCI-2 SCI-2 corresponds to one member terminal device; the SCI-1 is used to indicate that the scheduling information is used by the first terminal device to allocate resource information for transmitting services to the one or more member terminal devices, and each SCI- 2. Include resource information of the member terminal equipment corresponding to the SCI-2 for transmitting services.
A scheduling method, comprising:

The second terminal device receives a configuration message sent by the first terminal device, where the configuration message includes resource information of a first resource or the configuration message includes an interval time, and the first resource is used by the second terminal device to send a sideline link-transmission buffer status report SL-BSR, where the interval time is used to instruct the second terminal device to send the SL-BSR through the second resource selected by itself within the interval time;

The second terminal device sends the SL-BSR using the first resource.
The method according to claim 9, wherein the receiving, by the second terminal device, the configuration message sent by the first terminal device comprises:

The second terminal device receives the configuration message sent by the first terminal device to the second terminal device through PC5-RRC.
The method according to claim 9, wherein the first resource is further used for the second terminal to send auxiliary information, the auxiliary information including one of priority information for transmitting service data or sub-channel size or more.
The method according to claim 9, wherein the second resource is further used for the second terminal device to transmit auxiliary information, and the auxiliary information includes one of priority information for transmitting service data or subchannel size one or more.
The method according to claim 11 or 12, wherein the auxiliary information is carried in a sidelink medium access control layer control element SL-MAC-CE.
The method according to claims 9-13, wherein the method further comprises:

The second terminal device receives scheduling information from the first terminal device within a first time period after sending the SL-BSR, the scheduling message includes resource information of a third resource, and the third resource is used for all the second terminal device transmits service data; or

If the second terminal device does not receive the scheduling information from the first terminal device within the first time period after sending the SL-BSR, the second terminal device uses the fourth resource to transmit service data, and the fourth The resource is randomly selected by the second terminal device, or is selected according to the result of all or part of the resource perception; or

If the second terminal device does not receive the scheduling information from the first terminal device within the first time period after sending the SL-BSR, the second terminal device sends the SL-BSR to the first terminal device; or

If the second terminal device does not receive the scheduling information from the first terminal device within the first time period after sending the SL-BSR, the second terminal device keeps waiting to receive the scheduling information from the first terminal device.
The method according to claim 14, wherein the first terminal device is a group head terminal device, the second terminal device is a member terminal device, and the scheduling message includes first-level sidelink control information SCI-1, the scheduling message further includes one or more second-level sidelink control information SCI-2 corresponding to one or more member terminal devices, each of the one or more SCI-2 SCI-2 corresponds to one member terminal device; the SCI-1 is used to indicate that the scheduling information is used by the first terminal device to allocate resource information for transmitting services to the one or more member terminal devices, and each SCI- 2. Include resource information of the member terminal equipment corresponding to the SCI-2 for transmitting services.
The method according to claim 15, wherein the one or more member terminal devices include the second terminal device, and the method further comprises:

The second terminal device acquires resource information for transmitting service data according to the SCI-2 corresponding to the second terminal device in the scheduling message.