WO2024012347A1

WO2024012347A1 - Communication method and apparatus

Info

Publication number: WO2024012347A1
Application number: PCT/CN2023/106110
Authority: WO
Inventors: 刘云; 黎超; 焦瑞晟
Original assignee: 华为技术有限公司
Priority date: 2022-07-14
Filing date: 2023-07-06
Publication date: 2024-01-18

Abstract

Embodiments of the present application provide a communication method and apparatus. The method comprises: a first terminal device preempts a channel opportunity time COT to send request information to a network device, wherein the request information is used for requesting the network device to send indication information, and the indication information is used for determining to allocate a first resource in the COT to at least one second terminal device; and the first terminal device receives the indication information from the network device, and allocates the first resource to the at least one second terminal device on the basis of the indication information. According to the solution provided by the embodiments of the present application, the network device can be made to schedule a resource in an unlicensed spectrum for the terminal device, thereby improving system throughput and the spectrum utilization rate.

Description

Communication methods and devices

This application requires the priority of the Chinese patent application submitted to the State Intellectual Property Office of China on July 14, 2022, with the application number 202210832122.1 and the application name "A Sidelink Transmission Method", and requires that it be filed in August 2022 The priority of the Chinese patent application submitted to the State Intellectual Property Office of China with application number 202210963867.1 and the application title "Communication Method and Device" was submitted to the State Intellectual Property Office of China on March 11, the entire content of which is incorporated into this application by reference.

Technical field

The embodiments of the present application relate to the field of communication, and, more specifically, to communication methods and devices.

Background technique

During the sidelink (SL) transmission process of the new radio (new radio, NR) system, the terminal device needs to select the physical resources used to transmit data in the resource pool. As an implementation manner, the terminal device can select a physical resource for transmitting data in the resource pool according to the instruction information sent by the network device. Generally, the physical resources indicated by the network device to the terminal device are resources within the licensed spectrum. For resources in the unlicensed spectrum, terminal equipment can transmit data by seizing the channel or sharing the resources obtained by other terminal equipment preempting the channel. In order to improve system throughput and spectrum utilization, how to enable network equipment to schedule resources in unlicensed spectrum for terminal equipment is an issue worth considering.

Contents of the invention

Embodiments of the present application provide a communication method and device, which can enable network equipment to schedule resources in unlicensed spectrum for terminal equipment, improving system throughput and spectrum utilization.

The first aspect provides a communication method, which can be executed by a terminal device, or can also be executed by a component (such as a chip or circuit) of the terminal device, which is not limited. For convenience of description, the following description takes execution by a terminal device as an example.

The method includes: the first terminal device seizes the channel opportunity time COT, the first terminal device sends request information to the network device, the request information is used to request the network device to send indication information, the indication information is used to determine the first resource in the COT Assigned to at least one second terminal device, the first terminal device receives indication information from the network device.

Based on the above solution, after preempting the COT (the resources in the COT are resources in the unlicensed spectrum), the first terminal device requests the network device to allocate the remaining resources (ie, the first resources) transmitted by the first terminal device in the COT. Therefore, the first terminal device can share the first resource with the second terminal device based on the instruction information sent by the network device, thereby improving the throughput and spectrum utilization of the system. Moreover, the resources in the unlicensed spectrum scheduled by the network device to the second terminal device have been preempted by the first terminal device. Therefore, it can be avoided that the resources scheduled by the network device cannot be preempted by the first terminal device, resulting in a waste of resources in the indication information. The solution can also improve the success rate of the second terminal device accessing the shared resources.

Combined with the first aspect, in some implementations of the first aspect, the request information is carried in the scheduling request resource, the scheduling request resource corresponds to the first channel access priority, and the first channel access priority is greater than or equal to the channel of COT Access priority, the channel access priority corresponding to the service of at least one second terminal device to which resources are allocated is greater than or equal to the first channel access priority, or the channel access priority corresponding to the service of at least one second terminal device to which resources are allocated The channel access priority is greater than or equal to the channel access priority of the COT.

Based on the above solution, the network device is configured with scheduling request resources corresponding to different channel access priorities, so that terminal devices corresponding to channel access priorities of different services can send request information on the scheduling request resources corresponding to channel access priorities. , thereby avoiding sharing the first resource to a terminal device whose channel access priority corresponding to the service is lower than the channel access priority of the COT.

With reference to the first aspect, in some implementations of the first aspect, before the first terminal device receives the indication information from the network device, the method further includes: the first terminal device sends the first information to the network device, The first information is used to indicate at least one of the following: the end position of the time domain unit corresponding to the second resource in the COT, the second resource is used for transmission of the first terminal device, the side link identifier of the first terminal device, the first The transmission priority of the terminal device, or the channel access priority of the COT.

Based on the above solution, when the first information includes the end position of the time domain unit corresponding to the second resource, the network device can determine the time when the transmission of the first terminal device in the COT ends, that is, the available resources in the COT can be determined (the available resources can be understood (resources that can be scheduled for use by other terminal devices), and can further determine the timing of sending the indication information to avoid the indication information being received by the first terminal device after the first terminal device completes the transmission, resulting in a waste of the first resource. When the first information includes the side link identifier of the first terminal device, the network device can determine other terminal devices that have a transmission relationship with the first terminal device, so that the first resource can be preferentially allocated to the first terminal device that has a transmission relationship with the first terminal device. relationship terminal equipment. When the first information includes the transmission priority of the first terminal device or the channel access priority of the COT, the network device may avoid allocating the first resource to a low priority (transmission priority or service corresponding) when allocating the first resource. channel access priority) terminal equipment.

In connection with the first aspect, in some implementations of the first aspect, the indication information is received by the first terminal device before a first time, and the first time is based on the end position of the time domain unit corresponding to the second resource in the COT and the first The processing delay is determined.

Based on the above solution, the indication information needs to be received by the first terminal device before the first time. This can ensure that the first terminal device has time to process the indication information and share the first resource with other terminal devices in combination with the indication information.

With reference to the first aspect, in some implementations of the first aspect, the first processing delay includes a processing delay of indication information and a processing delay of resource indication information, and the resource indication information is used to indicate that the third terminal device transmits occupied resource, the third terminal device is one of the at least one second terminal device.

With reference to the first aspect, in some implementations of the first aspect, the indication information is received by the first terminal device at a second time, and the second time is determined based on the sending time of the request information and the second processing delay.

Based on the above solution, the first terminal device can receive the indication information at a fixed time domain position to avoid blind detection, thereby saving the power consumption of the first terminal device.

With reference to the first aspect, in some implementations of the first aspect, the indication information is used to indicate the end position of the time domain unit corresponding to the third resource, and the third resource includes the first resource.

Based on the above solution, the network device does not indicate the specific allocation of the first resource to the first terminal device, and the second terminal device can transmit resources in the first resource through the instruction of the network device.

With reference to the first aspect, in some implementations of the first aspect, the indication information includes any of the following: the end position of the time domain unit corresponding to the second resource in the COT and the end of the time domain unit corresponding to the third resource. Information on the number of time domain units between positions, time interval information between the time domain unit carrying request information and the end position of the time domain unit corresponding to the third resource, or time domain unit carrying indication information corresponding to the third resource The time interval information between the end positions of time domain units.

In conjunction with the first aspect, in some implementations of the first aspect, before the first terminal device receives the indication information from the network device, the method further includes: the first terminal device sending at least one of the following to the network device: with the first terminal device. The terminal device has information about the terminal device that has a transmission relationship, the reference signal receiving power information of the first terminal device, the reference signal receiving quality information of the first terminal device, and the service quality information of the first terminal device.

Based on the above solution, if the first terminal device sends information about the terminal device that has a transmission relationship with the first terminal device to the network device, the network device can determine the terminal device that has a transmission relationship with the first terminal device, so that the first terminal device can be prioritized. The resources are allocated to the terminal device that has a transmission relationship with the first terminal device. If the first terminal device sends the reference signal received power information, reception quality information, and service quality information of the first terminal device to the network device, the network device may preferentially allocate the first terminal device with high reference signal reception power/reception quality/service quality. Seize the available resources in the COT.

In connection with the first aspect, in some implementations of the first aspect, the indication information is also used to indicate at least one of the following: a side link identifier of at least one second terminal device, and at least one second terminal device occupying a third resource. time domain information, and frequency domain information of at least one second terminal device occupying the third resource.

Based on the above solution, the network device can indicate in the indication information which terminal devices are allocated the first resources, and can also indicate the time domain or frequency domain position of the allocated resources within the third resource, thereby reducing the processing on the first terminal device. the complexity.

Combined with the first aspect, in some implementations of the first aspect, the indication information includes time domain resource allocation TRIV, the TRIV indicates the time domain resource occupied by at least one second terminal device, and the starting position of the TRIV is any of the following: The time domain unit that carries the indication information; the end position of the time domain unit corresponding to the second resource in the COT, the second resource is used for transmission of the first terminal device; the time domain next to the end position of the time domain unit corresponding to the second resource unit; a time domain unit that carries a scheduling request corresponding to the first terminal device; or a time domain unit that carries a cache status report corresponding to the first terminal device.

Combined with the first aspect, in some implementations of the first aspect, the indication information includes TRIV, and the TRIV is used to indicate the first time domain resource. The time domain resources between the source location and the second time domain resource location, the first time domain resource location and the second time domain resource location are time domain resources occupied by the third terminal device for transmission, and the third terminal device is at least one second time domain resource. One of the terminal devices.

Based on the above solution, the network device can indicate multiple continuous time domain resources allocated to a second terminal device through TRIV.

With reference to the first aspect, in some implementations of the first aspect, the indication information further includes frequency domain resource allocation FRIV, the FRIV indicates the starting position and number of comb teeth, and the FRIV is used to determine the at least one first The frequency domain resources occupied by the second terminal device for transmission, and the number of bits occupied by the FRIV is determined based on the following formula:

in, Indicates the number of comb teeth.

With reference to the first aspect, in some implementations of the first aspect, the method further includes: the first terminal device generates or updates resource indication information based on the indication information, the first terminal device sends the resource indication information to the third terminal device, and the third terminal device The terminal device is one of at least one second terminal device, the resource indication information indicates a fourth resource, the fourth resource is used for transmission of the third terminal device, and the first resource includes a fourth resource.

In conjunction with the first aspect, in some implementations of the first aspect, the method further includes: the first terminal device updates COT information, and the COT information may indicate the number of remaining time domain units in the COT.

In conjunction with the first aspect, in some implementations of the first aspect, the first terminal device generates or updates resource indication information based on the indication information and at least one of the following: an upper limit of the number of time domain units corresponding to the COT, or at least one second The transmission priority of the terminal device.

With reference to the first aspect, in some implementations of the first aspect, the first terminal device allocates resources in the first resources to at least one second terminal device in order from high to low transmission priority based on the indication information. .

With reference to the first aspect, in some implementations of the first aspect, the method further includes: the first terminal device sending first feedback information to the network device, the first feedback information being used to feed back that the first terminal device has sent the resource indication. information.

In connection with the first aspect, in some implementations of the first aspect, if the indication information is received by the first terminal device after the first moment, the first terminal device does not generate or update the resource indication information based on the indication information. Based on the determination of the end position of the time domain unit corresponding to the second resource in the COT and the first processing delay, the method further includes: the first terminal device sends second feedback information to the network device, and the second feedback information is used to feed back to the first terminal device Resource indication information was not generated or updated.

With reference to the first aspect, in some implementations of the first aspect, when the transmission duration of the first terminal device is greater than or equal to the threshold value, the first terminal device sends the request information to the network device.

The second aspect provides a communication method, which can be executed by a terminal device, or can also be executed by a component (such as a chip or circuit) of the terminal device, which is not limited. For convenience of description, the following description takes execution by a terminal device as an example.

The method includes: the second terminal device receives resource indication information from the network device or the first terminal device, the resource indication information indicates a fourth resource, the fourth resource is a resource in the COT preempted by the first terminal device, and the second terminal device Data is transmitted on the fourth resource.

The network device or the first terminal device can use the remaining resources transmitted by the first terminal device in the COT preempted by the first terminal device to the second terminal device, thereby improving the throughput and spectrum utilization of the system. Moreover, the resources in the unlicensed spectrum scheduled by the network device or the first terminal device to the second terminal device have been preempted by the first terminal device. Therefore, the success rate of the second terminal device accessing the scheduled resources can be improved.

With reference to the second aspect, in some implementations of the second aspect, the method further includes: the second terminal device sends scheduling request information to the network device, and the scheduling request information requests resources for transmission.

In the third aspect, a communication method is provided, which method can be executed by a network device, or can also be executed by a component of the network device (such as a chip or a circuit), which is not limited. For convenience of description, the following description takes execution by a network device as an example.

The method includes: the network device receives request information from the first terminal device, the request information is used to request the network device to send indication information, and the indication information is used to determine to allocate the first resource in the COT that the first terminal device has preempted to at least one The second terminal device and the network device send the indication information to the first terminal device.

Based on the above solution, the network device can allocate the remaining resources (ie, the first resources) transmitted by the first terminal device in the COT at the request of the first terminal device, and indicate the allocation to the first terminal device. Therefore, the first terminal device can share the first resource with other terminal devices based on the instruction information sent by the network device, thereby improving the throughput and spectrum utilization of the system. And the network equipment is scheduled to its The resources in the unlicensed spectrum of other terminal devices have been preempted by the first terminal device. Therefore, it can avoid that the resources scheduled by the network device cannot be preempted by the first terminal device, resulting in a waste of resources for indication information. This solution can also improve other terminal devices. The success rate of the device accessing the shared resource.

Combined with the third aspect, in some implementations of the third aspect, the request information is carried in the scheduling request resource, the scheduling request resource corresponds to the first channel access priority, and the first channel access priority is greater than or equal to the channel access of the COT. The channel access priority corresponding to the service of at least one second terminal device to which resources are allocated is greater than or equal to the first channel access priority, or the channel corresponding to the service of at least one second terminal device to which resources are allocated The access priority is greater than or equal to the channel access priority of COT.

With reference to the third aspect, in some implementations of the third aspect, before the network device sends the instruction information to the first terminal device, the method further includes: the network device receives the first information from the first terminal device, and the first information is Indicates at least one of the following: the end position of the time domain unit corresponding to the second resource in the COT, the second resource is used for the transmission of the first terminal equipment; the side link identifier of the first terminal equipment; the transmission of the first terminal equipment Priority; or COT channel access priority.

Combined with the third aspect, in some implementations of the third aspect, the indication information is received by the first terminal device before the first time, and the first time is based on the end position of the time domain unit corresponding to the second resource in the COT and the first time. The processing delay is determined.

In connection with the third aspect, in some implementations of the third aspect, the first processing delay includes a processing delay of the indication information and a processing delay of the resource indication information, and the resource indication information is used to indicate the third terminal device to transmit occupied resource, the third terminal device is one of the at least one second terminal device.

Combined with the third aspect, in some implementations of the third aspect, the indication information is received by the first terminal device at a second time, and the second time is determined based on the sending time of the request information and the second processing delay.

In conjunction with the third aspect, in some implementations of the third aspect, the indication information is used to indicate the end position of the time domain unit corresponding to the third resource, and the third resource includes the first resource.

In connection with the third aspect, in some implementations of the third aspect, the indication information includes any of the following: the end position of the time domain unit corresponding to the second resource in the COT and the end position of the time domain unit corresponding to the third resource. Information on the number of time domain units in the interval; information on the time interval between the time domain unit carrying the request information and the end position of the time domain unit corresponding to the third resource; or information on the time domain unit carrying the indication information and the time domain corresponding to the third resource. Information about the time interval between the end positions of domain units.

With reference to the third aspect, in some implementations of the third aspect, before the network device sends the indication information to the first terminal device, the method further includes: the network device receives at least one of the following from the first terminal device: and The first terminal device has information about the terminal device in the transmission relationship, the reference signal reception power information of the first terminal device, the reference signal reception quality information of the first terminal device, and the service quality information of the first terminal device.

In conjunction with the third aspect, in some implementations of the third aspect, the indication information is also used to indicate at least one of the following: a side link identifier of at least one second terminal device; at least one second terminal device occupying a third resource time domain information; frequency domain information of at least one second terminal device occupying the third resource.

Combined with the third aspect, in some implementations of the third aspect, the indication information includes time domain resource allocation TRIV, the TRIV indicates the time domain resource occupied by at least one second terminal device, and the starting position of the TRIV is any of the following: The time domain unit that carries the indication information; the end position of the time domain unit corresponding to the second resource in the COT, the second resource is used for transmission of the first terminal device; the time domain next to the end position of the time domain unit corresponding to the second resource unit; a time domain unit that carries a scheduling request corresponding to the first terminal device; or a time domain unit that carries a cache status report corresponding to the first terminal device.

Combined with the third aspect, in some implementations of the third aspect, the indication information includes TRIV, and the TRIV is used to indicate the first time domain resource location and the second time domain resource location, and the first time domain resource location and the second time domain resource location. The time domain resources between resource locations are the time domain resources occupied by the third terminal device for transmission, and the third terminal device is one of at least one second terminal device.

Combined with the third aspect, in some implementations of the third aspect, the indication information also includes frequency domain resource allocation FRIV, the FRIV indicates the starting position and number of comb teeth, and the FRIV is used to determine the transmission of the at least one second terminal device The occupied frequency domain resources and the number of bits occupied by FRIV are determined based on the following formula:

in, Indicates the number of comb teeth.

Combined with the third aspect, in some implementations of the third aspect, the method further includes: the network device sends resource indication information to the third terminal device, the resource indication information indicates a fourth resource, and the fourth resource is used for the third terminal device. transmission, the third terminal device is at least one One of the second terminal devices, the first resource includes the fourth resource.

Combined with the third aspect, in some implementations of the third aspect, the method further includes: the network device receives scheduling request information from the second terminal device, and the scheduling request information requests resources for transmission.

For the beneficial effects of the above implementation in combination with the third aspect, reference can be made to the description of the beneficial effects in the related implementation of the first aspect, and will not be described again here.

The fourth aspect provides a communication method, which can be executed by a network device, or can also be executed by a component of the network device (such as a chip or a circuit), which is not limited. For convenience of description, the following description takes execution by a network device as an example.

The method includes: the network device generates indication information, the indication information is used to indicate the resources occupied by the second terminal device for transmission, the resources are included in the channel opportunity time COT preempted by the first terminal device, and the resources include time domain resources and/or frequency domain resource, the network device sends instruction information to the first terminal device.

Based on the above solution, the network device can allocate the remaining resources (ie, the first resources) transmitted by the first terminal device in the COT to the second terminal device, and indicate the allocated resources to the first terminal device. Therefore, the first terminal device can share the first resource with other terminal devices based on the instruction information sent by the network device, thereby improving the throughput and spectrum utilization of the system.

Combined with the fourth aspect, in some implementations of the fourth aspect, the indication information includes time domain resource allocation TRIV, the TRIV indicates the time domain resource occupied by the second terminal device, and the starting position of the TRIV is any of the following: Bearer indication The time domain unit of the information; the end position of the time domain unit corresponding to the second resource in the COT, the second resource is used for transmission of the first terminal device; the time domain unit next to the end position of the time domain unit corresponding to the second resource; The time domain unit that carries the scheduling request corresponding to the first terminal device; or the time domain unit that carries the cache status report corresponding to the first terminal device.

Combined with the fourth aspect, in some implementations of the fourth aspect, the indication information includes TRIV, and the TRIV is used to indicate the first time domain resource location and the second time domain resource location, and the first time domain resource location and the second time domain resource location. The time domain resources between resource locations are the time domain resources occupied by the second terminal device for transmission.

Combined with the fourth aspect, in some implementations of the fourth aspect, the indication information also includes frequency domain resource allocation FRIV, FRIV indicates the starting position and number of comb teeth, and FRIV is used to determine the frequency domain occupied by the second terminal device for transmission Resource, the number of bits occupied by FRIV is determined based on the following formula:

in, Indicates the number of comb teeth.

In the fifth aspect, a communication method is provided, which method can be executed by a terminal device, or can also be executed by a component (such as a chip or circuit) of the terminal device, which is not limited. For convenience of description, the following description takes execution by a terminal device as an example.

The method includes: the terminal device receives indication information from the network device, the indication information is used to instruct the second terminal device to occupy resources for transmission, the resources are included in the channel opportunity time COT preempted by the first terminal device, and the resources include time domain resources and/or frequency domain resources; the first terminal device seizes the COT.

Based on the above solution, the first terminal device can share the remaining resources transmitted by the first terminal device in the COT that it has preempted to the second terminal device based on instructions from the network device, thereby improving the throughput and spectrum utilization of the system.

Combined with the fifth aspect, in some implementations of the fifth aspect, the indication information includes time domain resource allocation TRIV, the TRIV indicates the time domain resource occupied by the second terminal device, and the starting position of the TRIV is any of the following: The time domain unit that carries the indication information; the end position of the time domain unit corresponding to the second resource in the COT, the second resource is used for transmission of the first terminal device; the time domain next to the end position of the time domain unit corresponding to the second resource unit; a time domain unit that carries a scheduling request corresponding to the first terminal device; or a time domain unit that carries a cache status report corresponding to the first terminal device.

Combined with the fifth aspect, in some implementations of the fifth aspect, the indication information includes TRIV, and the TRIV is used to indicate the first time domain resource location and the second time domain resource location, and the first time domain resource location and the second time domain resource location. The time domain resources between resource locations are the time domain resources occupied by the second terminal device for transmission.

Combined with the fifth aspect, in some implementations of the fifth aspect, the indication information also includes frequency domain resource allocation FRIV, FRIV indicates the starting position and number of comb teeth, and FRIV is used to determine the frequency domain occupied by the second terminal device for transmission Resource, the number of bits occupied by FRIV is determined based on the following formula:

in, Indicates the number of comb teeth.

A sixth aspect provides a communication device, which is used to perform the method in any of the possible implementations of the first to fifth aspects. Specifically, the device may include units and/or modules for performing the method in any possible implementation of the first to fifth aspects, such as a processing unit and/or a communication unit.

In an implementation manner, the device is a terminal device (such as a first terminal device or a second terminal device) or a network device. When the device is a terminal device or a network device, the communication unit may be a transceiver, or an input/output interface; the processing unit may be at least one processor. Alternatively, the transceiver may be a transceiver circuit. Alternatively, the input/output interface may be an input/output circuit.

In another implementation manner, the device is a chip, chip system or circuit used in a terminal device (such as a first terminal device or a second terminal device) or a network device. When the device is a chip, chip system or circuit used for terminal equipment or network equipment, the communication unit may be an input/output interface, interface circuit, output circuit, input circuit, pin or circuit on the chip, chip system or circuit. Related circuits, etc.; the processing unit may be at least one processor, processing circuit or logic circuit, etc.

A seventh aspect provides a communication device, which includes: at least one processor configured to execute a computer program or instructions stored in a memory to perform the method in any of the possible implementations of the first to fifth aspects. Optionally, the device further includes a memory for storing computer programs or instructions. Optionally, the device further includes a communication interface, through which the processor reads the computer program or instructions stored in the memory.

In an implementation manner, the device is a terminal device (such as a first terminal device or a second terminal device) or a network device.

In another implementation manner, the device is a chip, chip system or circuit used in a terminal device (such as a first terminal device or a second terminal device) or a network device.

In an eighth aspect, the present application provides a processor for executing the methods provided in the first to fifth aspects.

For operations such as sending and getting/receiving involved in the processor, if there is no special explanation, or if it does not conflict with its actual role or internal logic in the relevant description, it can be understood as processor output, reception, input and other operations. , can also be understood as the transmitting and receiving operations performed by the radio frequency circuit and the antenna, which is not limited in this application.

In a ninth aspect, a computer-readable storage medium is provided. The computer-readable medium stores a program code for device execution. The program code includes a method for executing any of the possible implementations of the above-mentioned first to fifth aspects. method.

In a tenth aspect, a computer program product containing instructions is provided. When the computer program product is run on a computer, it causes the computer to execute the method in any of the possible implementation modes of the first to fifth aspects.

Description of drawings

Figure 1 is a schematic diagram of a network architecture provided by an embodiment of the present application.

Figure 2 is a schematic flowchart of resource scheduling using Mode 1 provided by an embodiment of the present application.

Figure 3 is a schematic diagram of the time interval between resources using Mode 1 to schedule resources according to an embodiment of the present application.

Figure 4 is an interactive flow chart of a communication method provided by an embodiment of the present application.

Figure 5 is a schematic diagram of the end position of the second resource provided by the embodiment of the present application.

FIG. 6 is a schematic diagram of determining the sending timing of indication information provided by an embodiment of the present application.

FIG. 7 is another schematic diagram of determining the timing of sending indication information provided by an embodiment of the present application.

Figure 8 is a schematic diagram of the positional relationship between the third resource and the first resource provided by the embodiment of the present application.

Figure 9 is a schematic diagram of the first terminal device updating the number of remaining time slots in the COT provided by the embodiment of the present application.

Figure 10 is a schematic timing diagram between steps of the method 400 provided by the embodiment of the present application.

Figure 11 is an interactive flow chart of another communication method provided by an embodiment of the present application.

Figure 12 is a schematic block diagram of a communication device provided by an embodiment of the present application.

Figure 13 is a schematic block diagram of yet another communication device provided by an embodiment of the present application.

Detailed ways

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

Figure 1 is a network architecture provided by an embodiment of the present application.

The communication system 100 shown in Figure 1 includes a network device 10 and at least one terminal device, such as a terminal device 20 and a terminal device 21. In the communication system, the terminal device 20 and the terminal device 21 can send uplink data/signals/information to Network device 10. Network device 10 can send downlink data/signals/information to any terminal device among terminal device 20 and terminal device 21. In addition, the terminal device 20 can also transmit data/signals/information with the terminal device 21 .

The communication method provided by the embodiment of the present application may also involve equipment or transmission nodes not shown in Figure 1. Of course, the communication method provided by the embodiment of the present application may also include only some of the equipment or transmission nodes shown in Figure 1. The implementation of this application This example does not limit this.

The above network architecture applied to the embodiments of the present application is only an example. The network architecture applicable to the embodiments of the present application is not limited to this. Any network architecture that can realize the functions of each of the above devices is applicable to the embodiments of the present application.

The technical solutions of the embodiments of this application can be applied to various communication systems, such as: long term evolution (long term evolution, LTE) system, advanced long term evolution (LTE advanced, LTE-A) system, LTE frequency division duplex (frequency division) duplex (FDD) system, LTE time division duplex (TDD), wireless fidelity (Wi-Fi) communication system, universal mobile telecommunication system (UMTS), global interconnection microwave access (worldwide interoperability for microwave access, WiMAX) communication system, fifth generation (5th Generation, 5G) system or future evolved communication system (for example, 6G mobile communication system), vehicle-to-X V2X, Among them, V2X can include vehicle to network (V2N), vehicle to vehicle (V2V), vehicle to infrastructure (V2I), vehicle to pedestrian (V2P), etc. Workshop communication long-term evolution technology (long term evolution-vehicle, LTE-V), Internet of Vehicles, machine type communication (MTC), Internet of things (IoT), machine-to-machine communication long term evolution technology (long term evolution-machine, LTE-M), machine to machine (machine to machine, M2M), etc.

The terminal device may be a wireless terminal device capable of receiving network device scheduling and indication information. An end device may be a device that provides voice and/or data connectivity to a user, or a handheld device with wireless connectivity capabilities, or other processing device connected to a wireless modem.

The terminal equipment in the embodiment of this application: may also be called terminal, access terminal, user unit, user equipment (UE), user station, mobile station, mobile station, remote station, remote terminal, mobile device, user Terminal, wireless communication equipment, user agent or user device. An end device is a device that includes wireless communication capabilities (providing voice/data connectivity to the user). For example, handheld devices with wireless connection functions, or vehicle-mounted devices. The terminal in the embodiment of the present application can be a mobile phone (mobile phone), a tablet computer (pad), a computer with wireless transceiver functions, a train, an airplane, a mobile internet device (mobile internet device, MID), virtual reality (virtual reality, VR) terminals, augmented reality (AR) terminals, wireless terminals in industrial control (such as robots, etc.), wireless terminals in the Internet of Vehicles (such as vehicle-mounted equipment, vehicle equipment, vehicle-mounted modules, vehicles, etc. ), wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grid, wireless terminals in transportation safety, smart cities ( Wireless terminals in smart city, wireless terminals in smart city, wireless terminals in smart home, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local Wireless local loop (WLL) station, personal digital assistant (PDA), handheld device with wireless communication capabilities, computing device or other processing device connected to a wireless modem, vehicle-mounted device, wearable device, 5G Terminals in the network or terminals in future evolution networks, etc. It can be understood that all or part of the functions of the terminal device in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (such as a cloud platform).

Among them, wearable devices can also be called wearable smart devices. It is a general term for applying wearable technology to intelligently design daily wear and develop wearable devices, 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 devices are not just hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly defined wearable smart devices include full-featured, large-sized devices that can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, and those that only focus on a certain type of application function and need to cooperate with other devices such as smartphones. Use, such as various types of smart bracelets, smart jewelry, etc. for physical sign monitoring.

The network device may be a device in a wireless network. For example, the network device may be a device deployed in a wireless access network to provide wireless communication functions for terminal devices. For example, the network device may be a radio access network (RAN) node that connects the terminal device to the wireless network, and may also be called an access network device.

The network equipment includes but is not limited to: evolved Node B (eNB), wireless network controller (radio network controller, RNC), Node B (Node B, NB), base station controller (BSC), base transceiver station (BTS), home evolved NodeB (HeNB, or home Node B, HNB), baseband unit (BBU), server, wearable device, vehicle-mounted device, access point (AP), wireless relay node, wireless backhaul node, transmission point (transmission point) in the WIFI system , TP) or transmission and reception point (TRP), etc., it can also be 5G, such as gNB in the NR system, or transmission point (TRP or TP), one or a group of base stations in the 5G system (including Multiple antenna panels) antenna panels, or may also be network nodes that constitute a gNB or transmission point, such as a baseband unit (BBU), or a distributed unit (DU), etc. The base station may be a macro base station, a micro base station, a pico base station, a small station, a relay station or a balloon station, etc. It can be understood that all or part of the functions of the network device in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (such as a cloud platform).

In some deployments, gNB may include centralized units (CUs) and DUs. The gNB may also include an active antenna unit (AAU). CU implements some functions of gNB, and DU implements some functions of gNB. For example, CU is responsible for processing non-real-time protocols and services, implementing radio resource control (RRC), and packet data convergence protocol (PDCP) layer functions. DU is responsible for processing physical layer protocols and real-time services, and implementing the functions of the radio link control (RLC) layer, media access control (MAC) layer and physical (physical, PHY) layer. AAU implements some physical layer processing functions, radio frequency processing and active antenna related functions. The RRC layer information is generated by the CU, and will eventually be encapsulated by the PHY layer of the DU into PHY layer information, or converted from the PHY layer information. Therefore, under this architecture, high-level signaling, such as RRC layer signaling, can also be considered to be sent by DU, or sent by DU+AAU. It can be understood that the network device may be a device including one or more of a CU node, a DU node, and an AAU node. In addition, the CU can be divided into network equipment in the access network (radio access network, RAN), or the CU can be divided into network equipment in the core network (core network, CN), which is not limited in this application.

The terminology involved in this application is briefly explained below, and will not be described again in the following embodiments.

1. Sidelink resource pool (resouce pool)

In NR systems, sidelink transmission is based on resource pools. A resource pool is a logical concept. A resource pool includes multiple (unless otherwise stated, multiple in this application refers to two or more) physical resources, and any one of the physical resources can be used to transmit data. For example, a resource pool includes one or more subchannels. Each subchannel in a resource pool occupies the same frequency domain resources (such as the number of physical resource blocks (PRBs)). Subchannels belonging to different resource pools The frequency domain resources occupied by channels can be different.

Before transmitting data, the terminal device needs to select the physical resources used to transmit the data from the resource pool.

2. Mode 1 (Mode 1) method

The way in which the terminal device is controlled by the network device when selecting resources in the resource pool is called Mode 1. That is, in Mode 1, the terminal device selects the resource for transmitting data from the resource pool according to the instruction information of the network device.

When using Mode 1 to schedule resources, you can include the following steps as shown in Figure 2:

① The network device sends downlink control signaling, such as downlink control information (DCI) 3_0. DCI3_0 includes resource #1 scheduled for UE1. UE1 uses this resource #1 to send data or signals to UE2.

For example, DCI 3_0 includes an information field (such as time gap: timegap; sl-PSFCH-to-PUCCH field) for determining the time interval between each step, where timegap is used to define DCI 3_0 and resource #1 (Figure 3 The time interval between the location of the physical sidelink control channel (PSCCH)/physical sidelink shared channel (PSSCH) shown, sl-PSFCH-to- The PUCCH field is used to determine the time interval between the physical sidelink feedback channel (PSFCH) and the physical uplink control channel (PUCCH), and the first resource and the physical sidechain The time interval between physical sidelink feedback channels (PSFCH) can be determined based on information such as the PSFCH configuration cycle of the resource pool. In addition, it should be noted that DCI 3_0 carries the time interval between various resources used for transmission (such as PSCCH/PSSCH, PSFCH, PUCCH), where the time domain position of PSFCH/PUCCH can be determined based on the time domain position of PSCCH/PSSCH .

The physical downlink control channel (PDCCH) carries DCI 3_0. The time domain location of the PSSCH can be determined according to the "time gap" field, and the frequency domain resource assignment (frequency resource assignment) indicated by DCI 3_0. FRIV) and time domain resource assignment (TRIV) to determine the time-frequency location of resource #1, determine the time domain location of PSFCH based on the time domain location of resource #1, and then determine the time domain location of PSFCH based on the time domain location of PSFCH and DCI 3_0 The sl-PSFCH-to-PUCCH field determines the time domain position of the PUCCH, and the specific resource information of the PUCCH is determined by the PUCCH resource indicator in DCI 3_0.

②UE1 sends signals or data to UE2 on resource #1.

③UE2 replies feedback information to UE1 through PSFCH.

④UE1 replies with feedback information to the network device through PUCCH. The feedback information indicates whether UE1 is successful in sending signals or data to UE2.

3. Mode 2 (Mode 2) method

The method in which the terminal device can independently select resources for transmitting data from the resource pool is called Mode2. That is, the terminal device has the opportunity to independently decide on resource selection and resource allocation. For example, the terminal device can exclude some occupied or high-interference resources based on the perceived spectrum occupancy, and select idle or low-interference resources. Transport resources.

4.SL-U

SL-U means using resources within the unlicensed spectrum (unlicense band) for sidelink transmission. Includes two access mechanisms, Type 1 and Type 2.

Type 1 is suitable for channel preemption scenarios. The UE needs to perform listen before talk (LBT) before transmitting data, that is, the UE needs to listen to the channel before transmitting data. UEs with different transmission priorities perform LBT for different lengths of time. The transmission priority can be understood as the transmission priority corresponding to the service. For example, the higher the delay requirement, the higher the transmission priority corresponding to the service.

Type 2 is suitable for sharing the transmission resources obtained through Type 1 with other UEs. For example, UE2 grabs the transmission opportunity within a period of time through Type1, that is, the channel occupancy time (COT). UE2 can use the resources in the COT for transmission, or it can instruct other UEs (such as UE2) to use the COT. The remaining resources within are transmitted. For example, UE1 seizes the COT and transmits the resources in the COT. UE1 wants to share the remaining resources in the COT with UE2 through Type 2. UE2 can occupy the channel corresponding to the COT after a period of time after UE1 completes the transmission. This period of time can be 25μs or 16μs.

That is, UE2 can sense the channel corresponding to the COT after UE1 completes the transmission. If the channel is not occupied within 25μs or 16μs, UE2 will occupy the channel.

As mentioned above, in Mode 1, the resources indicated by the network device to the terminal device are resources within the authorized spectrum. Similar to Mode 1, network equipment can also indicate resources in the unlicensed spectrum to terminal equipment for transmission by the terminal equipment.

In one possible implementation, after receiving the scheduling request (SR) sent by the terminal device, the network device sends indication information to the terminal device to indicate that resources in the unlicensed spectrum are used for transmission by the terminal device. The terminal device performs LBT after receiving the indication information. After successfully occupying the channel, it uses the resources in the unlicensed spectrum indicated by the network device for transmission.

In this embodiment, in order to prevent network equipment from seizing resources in the unlicensed spectrum and causing interference to the system, signaling on the network equipment side is restricted to resources within the licensed spectrum. Therefore, the network device cannot guarantee that the resources scheduled for the terminal device will be occupied by the terminal device. For example, the channel corresponding to the resource scheduled by the network device is busy or occupied by other terminal devices. In this case, the LBT of the terminal device will fail, thereby causing the terminal device to fail. The terminal device cannot occupy the resources in the unlicensed spectrum indicated by the network device, resulting in a waste of scheduling signaling by the network device, and transmission by the terminal device cannot be performed.

In view of this, embodiments of the present application provide a communication method that enables network devices to schedule unlicensed resources for terminal devices and improve system throughput and spectrum utilization.

Figure 4 is a flow interaction diagram of a communication method provided by an embodiment of the present application. The method 400 shown in Figure 4 includes the following steps:

S410. The first terminal device sends request information to the network device. The request information is used to request the network device to send instruction information. The instruction information is used to determine to allocate the first resource in the COT to at least one second terminal device. Correspondingly, the network device receives the request information.

Before S410, the first terminal device can preempt the COT through Type 1 method. The COT in S410 is the COT that the first terminal device has preempted, and the first resource in the COT (the first resource can be understood as the first terminal device in the COT The remaining resources for transmission) are resources within the unlicensed spectrum, and the second terminal device is a terminal device other than the first terminal device.

Unlicensed spectrum can be understood as a recognized unlicensed frequency band. Unlicensed frequency bands can be used without application, such as 2.4GHz, 5.8GHz and other unlicensed frequency bands.

In one possible implementation, when the transmission duration of the first terminal device is greater than or equal to the threshold value, the first terminal device sends the request information to the network device.

For example, when the subcarrier spacing is 15 kHz, the threshold value may be 4 time slots. When the subcarrier spacing is 30 kHz, the threshold value may be 8 time slots. This application does not limit this.

In one possible implementation, the request information is carried in a scheduling request resource, and the scheduling request resource corresponds to a first channel access priority, and the first channel access priority is greater than or equal to the channel access priority of the COT. The channel access priority corresponding to the service of at least one second terminal device to which resources are allocated is greater than or equal to the first channel access priority, or the channel access priority corresponding to the service of at least one second terminal device to which resources are allocated The channel access priority level is greater than or equal to the above-mentioned COT.

It can be understood that the scheduling request resource is a resource configured by the network device, may be a periodic resource, and is specifically used to send request information similar to the request information in S410. Different scheduling request resources correspond to different channel access priorities. One scheduling request resource corresponds to one channel access priority, or one scheduling request resource corresponds to one channel access priority range (that is, one scheduling request resource corresponds to at least two channel access priority). Terminal devices with different transmission priorities send request information on different scheduling request resources. This allows the network device to determine which transmission priority terminal devices to allocate the first resource to based on the scheduling request resource carrying the request information. When the network device allocates the first resource, the channel access priority corresponding to the service of the second terminal device to which the resource is allocated is greater than or equal to the first channel access priority, or the service corresponding to the second terminal device to which the resource is allocated corresponds to The channel access priority of the COT is greater than or equal to the channel access priority of the above-mentioned COT.

For example, the first terminal device may inform the network device COT of the channel access priority or the sidelink identifier of the first terminal device and other information through RRC signaling. Different scheduling request resources correspond to different channel access priorities. After receiving the request information carried by the scheduling request resource, the network device can determine the indication information based on the information notified by RRC signaling, which can achieve the effect of the network device quickly replying to the indication information. , is especially suitable for scenarios where the transmission time occupied by the first terminal device in the COT is short.

If the network device does not configure scheduling request resources corresponding to different channel access priorities, the first terminal device or the network device may subsequently allocate the first resources to the second terminal device based on the channel access priority allocation corresponding to the COT.

One possible implementation, optionally, method 400 also includes:

S411. The first terminal device sends first information to the network device, where the first information is used to indicate at least one of the following:

The end position of the time domain unit corresponding to the second resource in the above-mentioned COT, the second resource is used for transmission of the first terminal device;

The side link identification of the first terminal equipment;

The transmission priority of the first terminal device; or

COT's channel access priority (channel access priority, CPA).

Among them, the first terminal device sends the end position of the time domain unit corresponding to the second resource in the COT to the network device, so that the network device can know the end position of the first terminal device's transmission in the COT, so that it can be used before the end of the first terminal device's transmission. Send the instruction information to the first terminal device to avoid waste of resources.

For example, the first information includes information #1 indicating the end position of the time domain unit corresponding to the second resource in the COT. Information #1 can indicate the end position and the request information/SR/buffer state report (buffer state report, BSR) The time interval of the sending moment (the time interval can be the number of time units, or it can be a time interval represented by a time unit similar to milliseconds); or information #1 can indicate the number of time domain units corresponding to the second resource in the COT number, and the position of the time domain unit carrying the request information/SR/BSR in the COT, or information #1 can indicate the number of time domain units corresponding to the second resource in the COT, and the starting point of the COT on the time domain unit. starting position.

The side link identifier of the first terminal device can be used by the network device to match the destination identifier (ID) corresponding to the destination index (destination index) on the second terminal device side. The destination index on the second terminal device side may be sent by the second terminal device to the network device.

For example, the sidelink ID (sidelink ID) of the first terminal device may be: source ID (source ID) or destination ID (destnation ID), and this application does not limit this.

The channel access priority of the COT can be used when the network device allocates the first resource.

For example, if the channel access priority of the COT is CAPC#1 (channel access priority class), the network device can allocate the first resource to the terminal device whose channel access priority is higher than or equal to CAPC#1.

It can be understood that the first information can be sent together with the request information, or the first information can be sent after the request information, and this application does not limit this. For example, after receiving the request information, the network device can send information to the first terminal device, requesting the first terminal device to send the first information, and the first terminal device sends the first information at the request of the network device.

In a possible implementation, the request information and/or the first information may be included in the SR or BSR.

As shown in Figure 5, the second resource includes time slot #1, time slot #2, time slot #3, and time slot #4. The end position of time slot #4 is the end position of the second resource. The second resource is Resources within the unlicensed spectrum used for transmission by the first terminal device. It can be understood that the request information and the above-mentioned first information in S410 are transmitted through resources within the licensed spectrum, and the request information and the above-mentioned first information can be transmitted by the first terminal device. Send it as soon as possible after seizing the COT. This application does not limit the sending timing of the request information and the above-mentioned first information.

Optionally, method 400 also includes:

S412: The second terminal device sends scheduling request information to the network device, where the scheduling request information requests resources for transmission by the second terminal device. Correspondingly, the network device receives the scheduling request information.

For example, after receiving the scheduling request information, the network device can know the transmission requirements of the second terminal device, and can subsequently schedule resources for the second terminal device based on the requirements.

It can be understood that scheduling resources for the second terminal device means allocating resources to the second terminal device and indicating the allocated resources to the second terminal device. There may be one or more second terminal devices that send scheduling request information to the network device. This application does not limit this.

S420: The network device sends instruction information to the first terminal device. Correspondingly, the first terminal device receives the indication information. The indication information may be carried in DCI.

The timing of sending the instruction information has the following possible implementation methods:

Possible implementation #1: the indication information is received by the first terminal device before the first time, and the first time is determined based on the end position of the time domain unit corresponding to the second resource in the COT and the first processing delay.

The end position of the time domain unit corresponding to the second resource in the COT can be understood as the starting moment of the last time domain unit (eg, time slot) in the second resource.

For example, the first processing delay includes at least the processing delay of the indication information and the processing delay of the resource indication information. The resource indication information is used to indicate the resources occupied by the third terminal device for transmission. The third terminal device is at least one of the first terminal devices. One of the two terminal devices. Or the first processing delay may also include other delays in addition to the processing delay of the indication information and the processing delay of the resource indication information, which is not limited by this application.

As shown in Figure 6, if time slot #4 is the last transmission time slot of the first terminal device, a control channel can be sent at the starting time of time slot #4, and the control channel can carry resource indication information. Then the first terminal device needs to send updated or generated resource indication information at the starting time of time slot #4. The starting time of time slot #4 can be understood as the end position of the time domain unit corresponding to the second resource.

The calculation formula of the first processing delay is as follows:

First processing delay = processing delay of indication information + processing delay of resource indication information

Therefore, the first time = the starting time of time slot #4 - the first processing delay.

It should be noted that according to the provisions of the protocol, control information is generally sent at the starting time of each time slot, so the starting time of the last time slot (time slot #4) is used as the reference here. It can be understood that the last timing of sending control information is used as the basis.

The processing delay of the indication information is, for example, the time required for the first terminal device to receive and decode the indication information, such as the processing delay of DCI. The processing delay of the resource indication information includes the update delay of the resource indication information or the generation delay of the resource indication information. For example, if the first terminal device has generated resource indication information to indicate sharing some of the first resources with UE2 before receiving the indication information, and after receiving and decoding the indication information, the first terminal device determines that it still needs to Some of the first resources are shared with UE2. At this time, the resource indication information needs to be updated. The time required to update the resource indication information is the update delay of the resource indication information. For another example, if the first terminal device does not generate resource indication information to indicate sharing some of the first resources to UE2 before receiving the indication information, and after receiving and decoding the indication information, the first terminal device determines that it needs to Some of the first resources are shared with UE2. At this time, resource indication information needs to be generated. The time required to generate the resource indication information is the generation delay of the resource indication information.

That is to say, the indication information must be received by the first terminal device before the first time at the latest, so that the first terminal device can have time to process the indication information and generate or update the resource indication information.

If the first information includes the end position of the time domain unit corresponding to the second resource in the COT, the network device can determine the first time based on the end position, and send the indication information before the first time, or the network device can consider the transmission of the indication information. delay, if the transmission delay is T1, the network device sends the indication information at time #1.

For example, time #1 = first time - T1.

Alternatively, the first terminal device notifies the network device of the first time in the request information, so that the network device sends the indication information at or before time #1 based on the first time and the transmission delay of the indication information.

It should be noted that in possible implementation #1, if the indication information is received by the first terminal device before the first moment, it indicates that the One terminal device has time to process the indication information and update or generate the resource indication information before the transmission ends. That is, the remaining resources in the COT can be shared with other terminal devices before the first terminal device completes the transmission, thereby avoiding COT interruption.

Possible implementation #2: the indication information is received by the first terminal device at a second time, and the second time is determined based on the sending time of the request information and the second processing delay.

For example, the second processing delay includes at least the processing delay of the request information and the delay of generating the indication information based on the request information. The processing delay of the request information is, for example, the time required for the network device to receive and decode the request information, based on The delay in generating the instruction information from the request information is, for example, the time it takes for the network device to decode the request information and generate the instruction information based on the content of the request information. Or the second processing delay may also include other delays besides the above-mentioned delay, which is not limited by this application. Alternatively, the second processing delay may be predefined or preconfigured, which is not limited by this application.

As shown in Figure 7, the first terminal device sends request information on time slot #1.

The calculation formula of the second processing delay is as follows:

The second processing delay = the processing delay of the request information + the delay of generating the indication information based on the request information

Example:

The second time = the sending time of the request information + the second processing delay, or

The second time = the time when the request information is received + the second processing delay.

The first terminal device may predict the second time based on the sending time of the request information, and thereby receive the indication information based on the second time and the transmission delay of the indication information.

It should be noted that in possible implementation #2, the first terminal device can estimate the time to receive the indication information based on the sending time of the request information, thereby receiving the indication information at the expected time to avoid blind detection by the first terminal device. Therefore This implementation manner can save the power consumption of blind detection or monitoring of the first terminal device.

Regarding the content of the instruction information, the following implementation methods are available:

Possible implementation #1, the indication information is used to indicate the end position of the time domain unit corresponding to the third resource, and the third resource includes the first resource.

It can be understood that the indication information indicates the location of a time domain unit, and the location of the time domain unit is the time domain unit corresponding to the third resource (the third resource is the resource added on the basis of the second resource indicated by the network device). In the last time domain unit, the third resource and the first resource may correspond to an end position, or the third resource and the first resource may not correspond to an end position, as shown in Figure 8. This application does not limit this.

For example, the indication information includes any of the following:

Information on the number of time domain units between the end position of the time domain unit corresponding to the second resource and the end position of the time domain unit corresponding to the third resource;

The time interval information between the time domain unit carrying the request information and the end position of the time domain unit corresponding to the third resource; or

Time interval information between the time domain unit carrying the indication information and the end position of the time domain unit corresponding to the third resource.

In this implementation, the network device needs to inform the second terminal device to which the resource is allocated the location of the resource allocated to it in the first resource, so that the second terminal device to which the resource is allocated knows which resources can be transmitted.

For example, the network device may determine the time domain resource to send the DCI to the second terminal device according to the location of the resource allocated by the network device to the second terminal device. The DCI, such as DCI 3_0, includes an information field for the second terminal device to determine. For details about the time interval between PSCCH/PSSCH, PSFCH and PUCCH, please refer to the relevant content of the Mode 1 mode mentioned above. This application does not limit this.

Possible implementation #2, the indication information is used to indicate at least one of the following: a sidelink identifier of at least one second terminal device, time domain information of at least one second terminal device occupying a third resource, at least one second Frequency domain information of the third resource occupied by the terminal device.

An example of time domain information indicating that the second terminal device occupies the third resource:

Example #1, the indication information includes a time domain resource allocation TRIV and a sidelink identifier of the second terminal device. The TRIV indicates the time domain resource occupied by each second terminal device. The starting position of TRIV is any of the following: the time domain unit carrying the indication information, the end position of the time domain unit corresponding to the second resource, the time domain unit next to the end position of the time domain unit corresponding to the second resource, the time domain unit carrying The time domain unit of the scheduling request corresponding to the first terminal device, or the time domain unit carrying the cache status report corresponding to the first terminal device.

For example, the indication information indicates that resources are allocated to two second terminal devices (UE#2 and UE#3), and the indication information includes {UE#2ID, TRIV2; UE#3ID, TRIV3}. The following uses TRIV2 to indicate the time domain resources of UE#2 as an example to describe different indication methods of TRIV2. The method of TRIV3 indicating the time domain resources of UE#3 is similar and will not be described again.

Method 1: TRIV2 indicates the location of a time slot, and the terminal device can determine the specific location of the time slot based on the starting position of TRIV and the interval indicated by TRIV2.

It can be understood that in mode 1, the resources allocated by the network device to UE#2 occupy one time slot.

Method 2: TRIV2 indicates the position of a time slot. The terminal device can determine the first time domain resource position and the second time domain resource position according to TRIV2. The first time domain resource position is the starting position of the above-mentioned TRIV. The second time domain resource position The location can be determined based on the interval indicated by TRIV2.

It can be understood that in mode 2, the resources allocated by the network device to UE#2 occupy multiple time slots, and the multiple time slots are the time slots between the first time domain resource location and the second time domain resource location. It can be understood that the network device and the first terminal device can agree on the location of the first time domain resource in advance, without the need for TRIV2 itself to indicate.

Method 3: TRIV2 indicates the location of two time slots. The terminal device can determine the third time domain resource location and the fourth time domain resource location based on TRIV2. Specifically, the terminal device determines the third time domain resource position according to the starting position of TRIV and the interval between the third time domain resource position indicated by TRIV2 and the starting position, and determines the third time domain resource position according to the starting position of TRIV and the fourth time domain resource indicated by TRIV2. The distance between the position and the starting position determines the fourth time domain resource position.

It can be understood that in mode 3, the resources allocated by the network device to UE#2 occupy multiple time slots, which are the time slots where the third time domain resource position and the fourth time domain resource position are located (i.e., 2 time slots). slot), or all time slots between the third time domain resource position and the fourth time domain resource position.

Example #2, the indication information indicates the ID of the second terminal device corresponding to each time domain unit in the third resource and the order of resources occupied by the second terminal device in the third resource.

For example, the third resource has 6 time slots and is allocated to 3 second terminal devices (UE#2, UE#3, UE#4), and the network device allocates 2 time slots to the 3 second terminal devices respectively, then The indication information indicates UE#2UE#2UE#3UE#3UE#4UE#4, and the first terminal device determines the resources allocated to each second terminal device based on the indication information.

Example #3, the indication information indicates the ID of the second terminal device and the number of resources occupied by each second terminal device in the third resource.

For example, the third resource has 6 time slots and is allocated to 3 second terminal devices (UE#2, UE#3, UE#4), and the network device allocates 2 time slots to the 3 second terminal devices respectively, then The indication information indicates UE#2:2, UE#3:2, and UE#4:2. The first terminal device determines the resources allocated to each second terminal device based on the indication information.

An example of frequency domain information indicating that the second terminal device occupies the third resource:

Example #4, the indication information also includes frequency domain resource allocation FRIV, FRIV indicates the starting position and number of comb teeth (interlace), FRIV is used to determine the frequency domain resources occupied by at least one second terminal device for transmission, and the bits occupied by FRIV The number is determined based on the following formula:

in, Indicates the number of comb teeth.

For example, frequency domain resources on one time slot are occupied by multiple second terminal devices, and each second terminal device occupies one or more comb teeth. At this time, in addition to indicating the location of the time domain resources occupied by the second terminal equipment, the indication information also needs to indicate the location of the frequency domain resources occupied by each second terminal equipment.

Method 1: The indication information indicates the ID of the second terminal device corresponding to each comb tooth.

Method 2: The indication information indicates the starting position of the subchannel (subchannel) occupied by each second terminal device and the number of occupied subchannels.

In Mode 1 and Mode 2, the number of bits occupied by FRIV can be calculated according to the above formula. For example, there are 5 comb teeth at 15kHz, and the number of bits occupied by FRIV is 4. There are 10 or 11 comb teeth at 30kHz, and the number of bits occupied by FRIV is The number is 6 or 7.

It can be understood that the indication information can be a combination of two items in {UE ID, TRIV}, or a combination of three items in {UE ID, TRIV, FRIV}, depending on the situation. For example, when the frequency domain resource in one time slot is occupied by one second terminal device, the indication information is a combination of two items in {UE ID, TRIV}. The frequency domain resource in one time slot is occupied by two or more second terminal devices. When the second terminal device is occupied, the indication information is a combination of three items in {UE ID, TRIV, FRIV}.

It can also be understood that possible implementation #2 and possible implementation #1 can be combined, that is, the content indicated by the indication information can be a combination of the content indicated respectively by the indication information in the above two implementations.

Possible implementation #3, in addition to indicating the end position of the time domain unit corresponding to the third resource, the indication information is also used to indicate: a side link identifier of at least one second terminal device and at least one of the following: at least A second terminal device requires resources, at least Transmission priority of a second terminal device.

In this embodiment, the network device cannot determine the maximum duration of the COT preempted by the first terminal device and/or the duration of transmission used by the first terminal device. Therefore, the third resource indicated by the network device is likely to exceed the COT preempted by the first terminal device. COT. If the first terminal device determines that the third resource exceeds the COT based on the indication information, the first terminal device can ignore the resources that exceed the COT, that is, the duration corresponding to the resources allocated by the first terminal device to all second terminal devices cannot exceed the resource upper limit.

The resource upper limit is determined based on the maximum duration of the COT preempted by the first terminal device and the transmission duration of the first terminal device.

For example: the resource upper limit = the maximum duration of the COT preempted by the first terminal device - the transmission duration of the first terminal device.

When the first terminal device allocates resources to all second terminal devices, it may allocate resources to the second terminal device corresponding to the sidelink identifier indicated by the indication information, if the indication information also indicates resources required by at least one second terminal device, Then the first terminal device can allocate corresponding resources according to the number of resources required by each second terminal device, or if the indication information also indicates the transmission priority of at least one second terminal device, the first terminal device can allocate corresponding resources according to the transmission priority. Resources are allocated first to the second terminal device with a higher transmission priority.

Optionally, method 400 also includes:

The first terminal device sends at least one of the following to the network device:

Information about the terminal equipment that has a transmission relationship with the first terminal equipment, reference signal receiving power (RSRP) information of the first terminal equipment, reference signal receiving quality (RSRQ) of the first terminal equipment Information, quality of service (QoS) information of the first terminal device.

It can be understood that the above information can be sent together with the request information, or can be sent after the request information, or the above information can be maintained periodically. If the above information is maintained periodically by the network device, and the above information does not change during the maintenance cycle, the first terminal device does not need to send it. If the above information changes during the maintenance cycle, the first terminal device needs to send the changed above information.

The network device may determine which second terminal devices to preferentially allocate the first resource to based on information about terminal devices that have a transmission relationship with the first terminal device. For example, both UE#2 and UE#3 send scheduling request information to the network device to request allocation of resources for transmission. The second terminal device that has a transmission relationship with the first terminal device is UE#2, and UE#2 and UE#3 have the same transmission priority. For example, the value of the transmission priority can be 0-7. The transmission priorities of UE#2 and UE#3 are both 5. At this time, the network device can allocate the first resource to UE#2 first. .

Based on the reference signal receiving power information of the first terminal device, the reference signal receiving quality information of the first terminal device, and the service quality information of the first terminal device, the network device prioritizes the first allocation of reference signal receiving power/reception quality/service quality. The terminal device seizes the available resources in the COT.

For example, the first terminal device #1 sends a request message to the network device, requesting the network device to allocate the resource #A in the preempted COT #1. The resource #A transmits the remaining resources in the COT #1 for the first terminal device #1. resource, the first terminal device #2 sends a request message to the network device, requesting the network device to allocate the preempted resource #B in COT#2, and the resource #B transmits the remaining resources in COT#2 for the first terminal device #2 , if the RSRP/RSRQ/service quality of the first terminal device #1 is higher than that of the first terminal device #2, the network device allocates resource #A first.

For example, the network device obtains the QoS when the first terminal device #1 uses resources in COT #1 for transmission, and the network device preferentially allocates resource #A to the second terminal device corresponding to the service that matches the QoS. Or the network device obtains the RSRP when the first terminal device #1 uses resources in COT #1 for transmission, and the network device preferentially allocates resource #A to the second terminal device corresponding to the service that matches the RSRP.

Optionally, method 400 also includes:

S430', the first terminal device updates COT information, and the COT information may indicate the number of remaining time domain units in the COT.

In a possible implementation, the first terminal device updates COT information based on the indication information.

For example, if the first terminal device receives the indication information, the number of remaining time slots in the COT is n (the number of remaining time slots in the COT is the number of remaining time slots in the current COT, for example, the first terminal device needs to use 6 time slots for transmission , and the COT is not currently shared with other terminal devices, then the COT includes 6 time slots at this time. If the first terminal device receives the indication information in the third time slot, the number of remaining time slots in the COT is 4, and the remaining The number of time slots includes the time slot for receiving the indication information); the third resource indicated by the indication information is to add 3 additional time slots at the end of the second resource (i.e., the resource used by the first terminal device for transmission), that is, the indication information Indicates to share the 3 time slots after the second resource with other terminal equipment. If the indication information takes effect after k time slots, the number of remaining time slots represented by the updated COT information on the effective time slot is n-k +3. The k time slots can be understood as the time required to decode the indication information after receiving the indication information, and k can be greater than or equal to 1. The effective time slot is understood as: after decoding the indication information, the number of remaining time slots in the COT will be updated based on the indication information. The time slot in which the number of remaining time slots in the COT is updated based on the indication information is the effective time slot.

For example, as shown in Figure 9, the maximum duration of the COT preempted by the first terminal device is 8 time slots, and the first terminal device uses 6 time slots for transmission. time slots, the third resource indicated by the indication information received in the third time slot (time slot #3) is 2 additional time slots (i.e., time slot #7 and time slot #8) based on the 6 time slots. ; Indicates that the number of remaining time slots in the COT is 5. Other terminal equipment can demodulate the control channel to determine the number of remaining time slots in the COT. In time slot #5, the first terminal device indicates to other terminal devices through the control channel that the number of remaining time slots in the COT is 4, and so on. Updating the number of remaining time slots in the COT in each time slot allows other terminal devices to determine the time domain position of the end of the COT, thereby saving the perceived power consumption of other terminal devices and allowing unrelated terminal devices (i.e. not allocated The second terminal device of the resource) does not sense the remaining time slots in the COT.

For example, the number of remaining time slots in the COT when the first terminal receives the indication information may not be considered, but the COT information may be updated based on the time slot when the indication information takes effect or the COT information may be updated based on the time slot of the first terminal device. To determine the number of remaining time slots in the COT. If the number of remaining time slots before the update corresponding to the time slot in which the indication information takes effect is m, and the indication information indicates that p time slots are shared with other terminal devices, then the updated COT information is the remaining m+p time slots. For example, the maximum duration of the COT preempted by the first terminal device is 8 time slots, and the transmission of the first terminal device needs to occupy 4 time slots. The first terminal device receives the instruction information, which indicates that 2 of the COT resources will be used. time slots are shared with the second terminal device; before the first terminal device parses the indication information, in the first time slot, the COT information sent by the first terminal device is the remaining 4 time slots, and in the second time slot, the COT information sent by the first terminal device is the remaining 4 time slots. The COT information sent by a terminal device is the remaining 3 time slots; then the first terminal parses the indication information and learns that the COT has been extended by 2 time slots. Before updating the COT information, the COT information in the 3rd time slot is the remaining time slots. 2 time slots, the first terminal device updates the COT information according to the indication information in the third time slot, and the updated COT information is the remaining 2+2 time slots (that is, 4 time slots).

Optionally, method 400 also includes:

S430. The first terminal device updates or generates resource indication information.

In a possible implementation, the first terminal device updates or generates resource indication information based on the indication information.

For example, if the first terminal device has generated resource indication information to indicate sharing some of the first resources to UE2 before receiving the indication information, and after receiving the indication information, the first terminal device determines that more resources are needed according to the indication information. Some of the first resources are shared with UE2 or UE3. At this time, the resource indication information needs to be updated. For another example, if the first terminal device does not generate resource indication information to indicate sharing some of the first resources with other UEs before receiving the indication information, and after receiving the indication information, the first terminal device determines the need based on the indication information. To share some of the first resources with other UEs (such as UE2), resource indication information needs to be generated.

In another possible implementation, the first terminal device updates or generates resource indication information based on the indication information and at least one of the following: the upper limit of the number of time domain units corresponding to the above-mentioned COT, or the transmission priority of at least one second terminal device .

For example, the first terminal device updates or generates resource indication information based on the number of remaining time slots in the COT, and the number of remaining time slots in the COT is determined based on the indication information and the upper limit of the number of time domain units corresponding to the COT.

For example, the maximum duration of the COT preempted by the first terminal device is 8 time slots, the first terminal device uses 6 time slots for transmission, and the indication information indicates that the third resource is to add 3 time slots on the basis of 6 time slots. That is, the third resource indicated by the network device exceeds the COT by one time slot. At this time, the first terminal device still determines the resource allocation of the second terminal device according to the 8 time slots occupied by the COT. The resource allocation on the time slot exceeding the COT is the first. The terminal equipment can be ignored, that is, the sum of the time slots used by the first terminal equipment for transmission and the time slots allocated to the second terminal equipment cannot exceed 8 time slots.

By way of example, the first terminal device updates or generates the resource indication information based on the indication information and the transmission priority of at least one second terminal device.

For example, the indication information instructs the first terminal device to share the first resource with UE2 and UE3. The transmission priority of UE3 is higher than that of UE2. If the first terminal device has generated resource indication information A before receiving the indication information, the indication information will be shared with the first resource. If the resource is shared with UE2, the first terminal device may update the resource indication information A to indicate sharing the first resource with UE3. If the first terminal device does not generate resource indication information before receiving the indication information, it can generate resource indication information A to instruct resource A in the first resource to be shared with UE2, and generate resource indication information B to instruct resource A in the first resource to be shared with UE2. Resource B is shared with UE3, and the number of resources in resource B may be greater than the number of resources in resource A; or the first terminal device generates resource indication information A, instructing to share all the first resources with UE3.

If in S420, the content of the indication information is possible implementation #1, that is, the network device only indicates the end position of the third resource, and does not indicate the position of the resource occupied by each second terminal device. At this time, the network device may indicate the location of the resources that each second terminal device can use through resource indication information.

If in S420, the content of the indication information is possible implementation manner #2, the indication information only includes the side row of at least one second terminal device. link identification, the first terminal device can autonomously allocate resources in the first resource to at least one second terminal device in order of transmission priority from high to low based on the indication information. When the first terminal device autonomously allocates the first resource, in addition to considering the transmission priority of the second terminal device, the first terminal device may also consider the waiting transmission time of the second terminal device.

It can be understood that the sum of the durations corresponding to the resources allocated by the first terminal device to all second terminal devices cannot exceed the resource upper limit. The resource upper limit = the maximum duration of the COT preempted by the first terminal device - the transmission duration of the first terminal device.

For example, there are 3 time slots left in the COT except the transmission duration of the first terminal device. The indication information indicates that UE#2 occupies 3 time slots. UE#2 has a lower transmission priority and indicates UE#3 occupies 2 time slots. slot, UE#3 has a higher priority. At this time, the first terminal device may allocate 2 time slots to UE#3 and 1 time slot to UE#2, or #allocate 2 time slots to UE#3 and not allocate resources to UE#2.

It should be noted that S430' and S430 may be performed at the same time or not at the same time. This application does not limit the order of S430' and S430.

Optionally, method 400 also includes:

S440: The first terminal device sends resource indication information to the third terminal device. The resource indication information indicates a fourth resource. The fourth resource is used for transmission by the third terminal device, and the first resource includes a fourth resource.

The resource indication information sent in S440 is the resource indication information updated or generated in S430. The third terminal device is one of the at least one second terminal device, and the second terminal device shown in FIG. 4 is one of the third terminal devices.

For example, the first terminal device determines to allocate the first resource to UE#2 and UE#3, and the first terminal device sends resource indication information #1 to UE#2, and the resource indication information #1 indicates resource #1, and resource #1 Used for transmission of UE#2. The first terminal device sends resource indication information #2 to UE#3. The resource indication information #2 indicates resource #2. Resource #2 is used for transmission of UE#3. Resource #1 and resource #2 are included in the first resource. The transmission of UE#2 may be the transmission between UE#2 and the first terminal device, or the transmission between UE#2 and other terminal devices. The transmission of UE#3 is also similar, and this application does not limit this.

It should be noted that S440 and S430 may be performed at the same time or not at the same time. This application does not limit the order of S440 and S430.

Optionally, method 400 also includes:

S441. The first terminal device sends first feedback information to the network device. The first feedback information is used to feed back that the first terminal device has sent updated or generated resource indication information to the third terminal device. Correspondingly, the network device receives the first feedback information.

For example, the first feedback information is carried on the PUCCH.

Optionally, if the indication information is received by the first terminal device after the first moment, the first terminal device does not update or generate resource indication information based on the indication information. Method 400 further includes:

S442: The first terminal device sends second feedback information to the network device, where the second feedback information is used to feedback that the first terminal device has not updated or generated resource indication information. Correspondingly, the network device receives the second feedback information.

For example, the time when the first terminal device receives the indication information is later than the first moment, and there is no time to process the indication information or no time to update or generate the resource indication information. The lack of time to update or generate the resource indication information can be understood to mean that there is no time to update the indication information before the end of the COT. The updated or generated resource indication information is sent to the third terminal device, or even if the updated or generated resource indication information is sent to the third terminal device before the end of the COT, the COT is close to the end and the third terminal device cannot use the resource. Transmit on the resource indicated by the instruction information.

For example, the second feedback information is carried on the PUCCH.

Optionally, method 400 also includes:

S450: The network device sends resource indication information to the third terminal device. The resource indication information indicates a fourth resource. The fourth resource is used for transmission of the third terminal device, and the first resource includes a fourth resource.

Similar to S440, we won’t go into details here.

Optionally, after S440 or S450, the second terminal device that receives the resource indication information may send third feedback information to the network device, where the third feedback information indicates that the second terminal device has received the resource indication information, or the third feedback information The information indicates that the second terminal device successfully transmitted using the fourth resource.

It can be understood that one of S440 and S450 can be selected, that is, the method 400 includes S440 or S450. Or the method 400 includes S440 and S450, which is not limited by this application.

It should be understood that FIG. 10 shows an example of the timing sequence between various steps of the method 400. In addition, there are other timing sequences (such as UE2 may send the third feedback information through PUCCH before S441 or S442 (the PUCCH in the example of Figure 10), or S450 may be before S430, etc.), this application does not limit this.

In Figure 10, the first terminal device is exemplified by UE1, the second terminal device is exemplified by UE2, the network device is exemplified by gNB, the COT preempted by UE1 is exemplified by 6 time slots, and the interactive use between gNB and UE1, gNB and UE2 are the resources in the licensed spectrum, the resources in timeslot #1 to timeslot #6 are the resources in the unlicensed spectrum, timeslots #1 to timeslot #4 are used for UE1 transmission, timeslots #5 and timeslots #6 are Transmitted on UE2.

In addition, S420 may not depend on S410, that is, the network device may first send the instruction information to the first terminal device, and then the first terminal device may seize the COT. This situation will be introduced below through Figure 11.

Through method 400, after preempting the COT, the first terminal device requests the network device to allocate the remaining resources (ie, the first resources) transmitted by the first terminal device in the COT. Therefore, the first terminal device can share the first resource with other terminal devices based on the instruction information sent by the network device, thereby improving the throughput and spectrum utilization of the system. Moreover, the resources in the unlicensed spectrum scheduled by the network device to the second terminal device have been preempted by the first terminal device. Therefore, it can be avoided that the resources scheduled by the network device cannot be preempted by the first terminal device, resulting in a waste of resources in the indication information. The solution can also improve the success rate of the second terminal device accessing the shared resources.

Figure 11 is an interactive flow chart of another communication method provided by an embodiment of the present application. The method 1100 illustrated in Figure 11 includes the following steps:

S1110. The network device sends indication information to the first terminal device. The indication information is used to instruct the second terminal device to occupy resources for transmission. The resources are included in the channel opportunity time COT that the first terminal device will seize. The resources include time domain resources. and/or frequency domain resources. The corresponding first terminal device receives the indication information.

In one possible implementation, the indication information includes TRIV. For how TRIV specifically indicates the time domain resources occupied by the second terminal device, please refer to the relevant content description in S420, which will not be described again.

In one possible implementation, the indication information includes FRIV. For details about how the FRIV indicates the frequency domain resources occupied by the second terminal device, please refer to the relevant content description in S420, which will not be described again.

Optionally, method 1100 also includes:

S1120, the first terminal device seizes the COT.

In one possible implementation, after receiving the indication information, the first terminal device seizes the COT in Type 1 mode and uses the second resource in the COT for transmission. The first terminal device allocates the first resource to at least one third resource based on the indication information. 2. Terminal equipment.

The method for the first terminal device to allocate the first resource to at least one second terminal device may refer to the description of the relevant content in the method 400. The first resource and the second resource are the same as the first resource and the second resource in the method 400, no longer Repeat.

Optionally, the method 1100 also includes other steps. For example, the method 1100 also includes steps similar to S412, S430, S430', S440, S441, S442, S450, etc. When the above steps are included, the terminal device (for example, the first terminal For how to perform the above steps on the device or the second terminal device) and the network device, please refer to the relevant content in method 400, which will not be described again.

Based on the method 1100, the network device can allocate resources in the unlicensed spectrum to the second terminal device, and the first terminal device can share the remaining resources of its transmission with the second terminal device based on the instruction information sent by the network device, thereby improving the system performance. throughput and spectrum utilization.

In the embodiment of this application, transmission by device A can be understood as sending by device A, or can also be understood as receiving by device A. This application does not limit this.

The dotted steps in the above flow chart are optional steps, and the order of each step is determined according to the internal logic of the method. The sequence numbers shown in the above flow chart are only examples and do not limit the order of the steps in this application.

In this application, "indicate" may indicate explicitly and/or implicitly. Illustratively, an implicit indication may be based on the location and/or resources used for transmission; an explicit indication may be based on one or more parameters, and/or one or more indexes, and/or one or more of the bit pattern.

It can be understood that some optional features in the embodiments of the present application may not depend on other features in certain scenarios, or may be combined with other features in certain scenarios without limitation.

The solutions in the various embodiments of the present application can be used in reasonable combinations, and the explanations or descriptions of various terms appearing in the embodiments can be referred to or explained in each embodiment, without limitation.

It can also be understood that in the above method embodiments, the methods and operations implemented by the terminal device (such as the first terminal device, the second terminal device) or the network device can also be implemented by components of the terminal device or the network device (such as chips, chip system, processor or circuit) to achieve.

It should be understood that the term "and/or" in this application is only an association relationship describing associated objects, indicating that three relationships can exist. For example, A and/or B can mean: A alone exists, and A and A exist simultaneously. B, there are three cases of B alone, among which A and B can be singular or plural. In addition, the character "/" in this article generally indicates that the related objects are an "or" relationship, but it may also indicate an "and/or" relationship. For details, please refer to the previous and later contexts for understanding.

In this application, "at least one item" refers to one item or multiple items, "at least two items" and "multiple items" refer to two items or multiple items. Two or more items. "At least one of the following" or similar expressions thereof refers to any combination of these items, including any combination of a single item (items) or a plurality of items (items). For example, at least one of a, b, or c can mean: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c can be single or multiple .

The method embodiments of the embodiments of the present application are described above with reference to the accompanying drawings, and the device embodiments of the embodiments of the present application are described below. It can be understood that the description of the method embodiments and the description of the device embodiments may correspond to each other. Therefore, for parts not described, please refer to the previous method embodiments.

The above mainly introduces the solution provided by the embodiment of the present application from the perspective of interaction between various network elements. It can be understood that, in order to implement the above functions, each network element, such as a transmitting end device or a receiving end device, includes a corresponding hardware structure and/or software module for performing each function. Those skilled in the art should realize that the present application can be implemented in the form of hardware or a combination of hardware and computer software with the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein. Whether a function is performed by hardware or computer software driving the hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each specific application, but such implementations should not be considered beyond the scope of this application.

Embodiments of the present application can divide the transmitting end device or the receiving end device into functional modules according to the above method examples. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module. middle. The above integrated modules can be implemented in the form of hardware or software function modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical function division. In actual implementation, there may be other division methods. The following is an example of dividing each functional module according to each function.

Figure 12 is a schematic block diagram of a communication device provided by an embodiment of the present application. The device 1200 includes a transceiver unit 1210. The transceiver unit 1210 may be used to implement corresponding communication functions. The transceiver unit 1210 may also be called a communication interface or a communication unit.

Optionally, the device 1200 further includes a processing unit 1220. The processing unit 1220 may be used for data processing.

Optionally, the device 1200 also includes a storage unit, which can be used to store instructions and/or data, and the processing unit 1220 can read the instructions and/or data in the storage unit, so that the device implements each of the foregoing method embodiments. actions of communication equipment.

In one design, the device 1200 may be the first terminal device in the aforementioned embodiment, or may be a component (such as a chip) of the first terminal device. The device 1200 can implement steps or processes corresponding to those performed by the first terminal device in the above method embodiment, wherein the transceiver unit 1210 can be used to perform operations related to the transceiver of the first terminal device in the above method embodiment, and the processing unit 1220 may be used to perform operations related to processing of the first terminal device in the above method embodiment.

The device 1200 can implement steps or processes corresponding to the execution of the first terminal device in the method embodiment according to the embodiment of the present application. The device 1200 can include a step for executing the first terminal device in the embodiment shown in Figure 4. method unit.

In another design, the device 1200 may be the network device in the aforementioned embodiment, or may be a component of the network device (such as a chip). The device 1200 can implement steps or processes corresponding to those performed by the network device in the above method embodiment, wherein the transceiver unit 1210 can be used to perform operations related to the transceiver of the network device in the above method embodiment, and the processing unit 1220 can be used to perform Operations related to processing of the network device in the above method embodiment.

The device 1200 may implement steps or processes corresponding to those performed by the network device in the method embodiment according to the embodiment of the present application, and the device 1200 may include a unit for executing the method performed by the network device in the embodiment shown in FIG. 4 .

Figure 13 is a schematic block diagram of yet another communication device provided by an embodiment of the present application. The apparatus 1300 includes a processor 13120 coupled to a memory 1320 for storing computer programs or instructions and/or data, and the processor 13120 for executing computer programs or instructions stored in the memory 1320, or reading the memory 1320 The stored data is used to execute the methods in the above method embodiments.

In some embodiments, there are one or more processors 13120.

In some embodiments, there are one or more memories 1320.

In some embodiments, the memory 1320 is integrated with the processor 13120, or is provided separately.

In some embodiments, as shown in Figure 13, the device 1300 also includes a transceiver 1330, which is used for signal reception and /or send. For example, the processor 13120 is used to control the transceiver 1330 to receive and/or transmit signals.

As a solution, the device 1300 is used to implement operations performed by a device (such as a first terminal device, or a network device) in each of the above method embodiments.

It should be understood that the processor mentioned in the embodiments of this application may be a central processing unit (CPU), or other general-purpose processor, digital signal processor (DSP), or application-specific integrated circuit (ASIC). 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, etc.

It should also be understood that the memory mentioned in the embodiments of the present application may be a volatile memory and/or a non-volatile memory. Among them, non-volatile memory can be read-only memory (ROM), programmable ROM (PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically removable memory. Erase electrically programmable read-only memory (EPROM, EEPROM) or flash memory. Volatile memory can be random access memory (RAM). For example, RAM can be used as an external cache. By way of example and not limitation, RAM includes the following forms: static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (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 device, discrete gate or transistor logic device, or discrete hardware component, the memory (storage module) can be integrated in the processor.

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

Embodiments of the present application also provide a computer-readable storage medium on which are stored computer instructions for implementing the methods executed by devices (such as first terminal devices, and network devices) in each of the above method embodiments.

Embodiments of the present application also provide a computer program product that includes instructions that, when executed by a computer, implement the methods executed by a device (such as a first terminal device or a network device) in each of the above method embodiments.

For explanations of relevant content and beneficial effects of any of the devices provided above, please refer to the corresponding method embodiments provided above, and will not be described again here.

In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the 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 can be integrated into another system, or some features can be ignored, or not implemented. In addition, the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. For example, the computer may be a personal computer, a server, or a network device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, e.g., the computer instructions may be transferred from a website, computer, server, or data center Transmission to another website, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more available media integrated. The available media may be magnetic media (such as floppy disks, hard disks, magnetic tapes), optical media (such as DVDs), or semiconductor media (such as solid state disks (SSD)), etc. For example, the aforementioned available media include but Not limited to: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program code.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application. should be covered by the scope of protection of this application Inside. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A communication method, characterized by including:

The first terminal device seizes the channel opportunity time COT;

The first terminal device sends request information to the network device, the request information is used to request the network device to send instruction information, the instruction information is used to determine to allocate the first resource in the COT to at least one second Terminal Equipment;

The first terminal device receives the indication information from the network device.
The method according to claim 1, characterized in that the request information is carried in a scheduling request resource, the scheduling request resource corresponds to a first channel access priority, and the first channel access priority is greater than or equal to the Describe the channel access priority of COT,

The channel access priority corresponding to the service of the at least one second terminal device to which resources are allocated is greater than or equal to the first channel access priority, or

The channel access priority corresponding to the service of the at least one second terminal device to which resources are allocated is greater than or equal to the channel access priority of the COT.
The method according to claim 1 or 2, characterized in that, before the first terminal device receives the indication information from the network device, the method further includes:

The first terminal device sends first information to the network device, where the first information is used to indicate at least one of the following:

The end position of the time domain unit corresponding to the second resource in the COT, the second resource is used for transmission of the first terminal device;

The side link identifier of the first terminal device;

The transmission priority of the first terminal device; or

The channel access priority of the COT.
The method according to any one of claims 1 to 3, characterized in that the indication information is received by the first terminal device before a first time, and the first time is based on the second resource in the COT. The end position of the corresponding time domain unit and the first processing delay are determined.
According to the method of claim 4, the first processing delay includes the processing delay of the indication information and the processing delay of the resource indication information, and the resource indication information is used to indicate the resources occupied by the third terminal device for transmission, so The third terminal device is one of the at least one second terminal device.
The method according to any one of claims 1 to 3, characterized in that the indication information is received by the first terminal device at a second time, and the second time is based on the sending time of the request information and The second processing delay is determined.
The method according to any one of claims 1 to 6, characterized in that the indication information is used to indicate the end position of the time domain unit corresponding to a third resource, and the third resource includes the first resource.
The method according to claim 7, characterized in that the indication information includes any of the following:

Information on the number of time domain units between the end position of the time domain unit corresponding to the second resource and the end position of the time domain unit corresponding to the third resource in the COT;

Time interval information between the time domain unit carrying the request information and the end position of the time domain unit corresponding to the third resource; or

Time interval information between the time domain unit carrying the indication information and the end position of the time domain unit corresponding to the third resource.
The method according to any one of claims 1 to 8, characterized in that, before the first terminal device receives the indication information from the network device, the method further includes:

The first terminal device sends at least one of the following to the network device:

Information about the terminal device that has a transmission relationship with the first terminal device, reference signal reception power information of the first terminal device, reference signal reception quality information of the first terminal device, services of the first terminal device Quality information.
The method according to any one of claims 1 to 9, characterized in that the indication information is also used to indicate at least one of the following:

The side link identifier of the at least one second terminal device;

The time domain information of the third resource occupied by the at least one second terminal device;

The at least one second terminal device occupies the frequency domain information of the third resource.
The method according to any one of claims 1 to 10, characterized in that the indication information includes time domain resource allocation TRIV, the TRIV indicates the time domain resource occupied by the at least one second terminal device, and the The starting position of TRIV is any of the following:

A time domain unit carrying the indication information;

The end position of the time domain unit corresponding to the second resource in the COT, the second resource is used for transmission of the first terminal device;

The next time domain unit at the end position of the time domain unit corresponding to the second resource;

The time domain unit that carries the scheduling request corresponding to the first terminal device; or

A time domain unit that carries the cache status report corresponding to the first terminal device.
The method according to any one of claims 1 to 11, characterized in that the indication information includes TRIV, TRIV is used to indicate a first time domain resource location and a second time domain resource location, and the first time domain resource location The time domain resource between the resource location and the second time domain resource location is the time domain resource occupied by a third terminal device for transmission, and the third terminal device is one of the at least one second terminal device.
The method according to any one of claims 1 to 12, characterized in that the indication information also includes frequency domain resource allocation FRIV, the FRIV indicates the starting position and number of comb teeth, and the FRIV is used to determine The frequency domain resources occupied by the transmission of the at least one second terminal device, and the number of bits occupied by the FRIV are determined based on the following formula:

in, Indicates the number of comb teeth.
The method according to any one of claims 1 to 13, characterized in that the method further includes:

The first terminal device generates or updates resource indication information based on the indication information;

The first terminal device sends the resource indication information to a third terminal device, the third terminal device is one of the at least one second terminal device, the resource indication information indicates a fourth resource, and the third terminal device is one of the at least one second terminal device. Four resources are used for transmission of the third terminal device, and the first resource includes the fourth resource.
The method of claim 14, wherein the first terminal device generates or updates resource indication information based on the indication information, including:

The first terminal device generates or updates resource indication information based on the indication information and at least one of the following:

The upper limit of the number of time domain units corresponding to the COT; or

The transmission priority of the at least one second terminal device.
The method according to any one of claims 1 to 15, characterized in that, based on the indication information, the first terminal device transmits data to the at least one second terminal device in order from high to low transmission priority. Allocate resources among the first resources.
The method according to any one of claims 14 to 16, characterized in that the method further includes:

The first terminal device sends first feedback information to the network device, where the first feedback information is used to feed back that the first terminal device has sent the resource indication information.
The method according to any one of claims 1 to 3, characterized in that if the indication information is received by the first terminal device after the first moment, the first terminal device does not Information updates or generates resource indication information. The first moment is determined based on the end position of the time domain unit corresponding to the second resource in the COT and the first processing delay. The method further includes:

The first terminal device sends second feedback information to the network device, where the second feedback information is used to feedback that the first terminal device has not updated or generated resource indication information.
The method according to any one of claims 1 to 18, characterized in that when the transmission duration of the first terminal device is greater than or equal to a threshold value, the first terminal device sends the data to the network device. Describe request information.
A communication method, characterized by including:

The network device receives request information from the first terminal device. The request information is used to request the network device to send indication information. The indication information is used to determine the channel opportunity time COT that the first terminal device has preempted. The first resource is allocated to at least one second terminal device;

The network device sends the indication information to the first terminal device.
The method according to claim 20, characterized in that the request information is carried in a scheduling request resource, the scheduling request resource corresponds to a first channel access priority, and the first channel access priority is greater than or equal to the Describe the channel access priority of COT,

The channel access priority corresponding to the service of the at least one second terminal device to which resources are allocated is greater than or equal to the first channel access priority, or

The channel access priority corresponding to the service of the at least one second terminal device to which resources are allocated is greater than or equal to the channel access priority of the COT.
The method according to claim 20 or 21, characterized in that, before the network device sends the indication information to the first terminal device, the method further includes:

The network device receives first information from the first terminal device, where the first information is used to indicate at least one of the following:

The end position of the time domain unit corresponding to the second resource in the COT, the second resource is used for transmission of the first terminal device;

The side link identifier of the first terminal device;

The transmission priority of the first terminal device; or

The channel access priority of the COT.
The method according to any one of claims 20 to 22, characterized in that the indication information is received by the first terminal device before a first time, and the first time is based on the second resource in the COT. The end position of the corresponding time domain unit and the first processing delay are determined.
The method of claim 23, wherein the first processing delay includes a processing delay of the indication information and a processing delay of resource indication information, and the resource indication information is used to indicate transmission occupancy of the third terminal device. resources, and the third terminal device is one of the at least one second terminal device.
The method according to any one of claims 20 to 22, characterized in that the indication information is received by the first terminal device at a second time, and the second time is based on the sending time of the request information and The second processing delay is determined.
The method according to any one of claims 20 to 25, wherein the indication information is used to indicate an end position of a time domain unit corresponding to a third resource, and the third resource includes the first resource.
The method according to claim 26, characterized in that the indication information includes any of the following:

Information on the number of time domain units between the end position of the time domain unit corresponding to the second resource and the end position of the time domain unit corresponding to the third resource in the COT;

Time interval information between the time domain unit carrying the request information and the end position of the time domain unit corresponding to the third resource; or

Time interval information between the time domain unit carrying the indication information and the end position of the time domain unit corresponding to the third resource.
The method according to any one of claims 20 to 27, characterized in that, before the network device sends the indication information to the first terminal device, the method further includes:

The network device receives at least one of the following from the first terminal device:

Information about the terminal device that has a transmission relationship with the first terminal device, reference signal reception power information of the first terminal device, reference signal reception quality information of the first terminal device, services of the first terminal device Quality information.
The method according to any one of claims 20 to 28, characterized in that the indication information is also used to indicate at least one of the following:

The side link identifier of the at least one second terminal device;

The time domain information of the third resource occupied by the at least one second terminal device;

The at least one second terminal device occupies the frequency domain information of the third resource.
The method according to any one of claims 20 to 29, characterized in that the indication information includes time domain resource allocation TRIV, the TRIV indicates the time domain resource occupied by the at least one second terminal device, and the The starting position of TRIV is any of the following:

A time domain unit carrying the indication information;

The end position of the time domain unit corresponding to the second resource in the COT, the second resource is used for transmission of the first terminal device;

The next time domain unit at the end position of the time domain unit corresponding to the second resource;

The time domain unit that carries the scheduling request corresponding to the first terminal device; or

A time domain unit that carries the cache status report corresponding to the first terminal device.
The method according to any one of claims 20 to 30, characterized in that the indication information includes TRIV, TRIV is used to indicate a first time domain resource location and a second time domain resource location, and the first time domain resource location resource location and the second time domain resource location. The time domain resources are time domain resources occupied by a third terminal device for transmission, and the third terminal device is one of the at least one second terminal device.
The method according to any one of claims 20 to 31, characterized in that the indication information also includes frequency domain resource allocation FRIV, the FRIV indicates the starting position and number of comb teeth, and the FRIV is used to determine The frequency domain resources occupied by the transmission of the at least one second terminal device, and the number of bits occupied by the FRIV are determined based on the following formula:

in, Indicates the number of comb teeth.
The method according to any one of claims 20 to 32, characterized in that the method further includes:

The network device sends resource indication information to the third terminal device, the resource indication information indicates a fourth resource, the fourth resource is used for transmission of the third terminal device, and the third terminal device is the at least one One of the second terminal devices, the first resource includes the fourth resource.
The method according to any one of claims 20 to 33, characterized in that the method further includes:

The network device receives scheduling request information from the second terminal device, and the scheduling request information requests resources for transmission.
A communication method, characterized by including:

The network device generates indication information. The indication information is used to instruct the second terminal device to occupy resources for transmission. The resources are included in the channel opportunity time COT preempted by the first terminal device. The resources include time domain resources and/or frequency resources. domain resources;

The network device sends the indication information to the first terminal device.
The method according to claim 35, wherein the indication information includes a time domain resource allocation TRIV, the TRIV indicates the time domain resource occupied by the second terminal device, and the starting position of the TRIV is any of the following: One item:

A time domain unit carrying the indication information;

The end position of the time domain unit corresponding to the second resource in the COT, the second resource is used for transmission of the first terminal device;

The next time domain unit at the end position of the time domain unit corresponding to the second resource;

The time domain unit that carries the scheduling request corresponding to the first terminal device; or

A time domain unit that carries the cache status report corresponding to the first terminal device.
The method according to claim 35 or 36, characterized in that the indication information includes TRIV, the TRIV is used to indicate a first time domain resource location and a second time domain resource location, and the first time domain resource location The time domain resources between the second time domain resource position and the second time domain resource position are the time domain resources occupied by the second terminal device for transmission.
The method according to any one of claims 35 to 37, characterized in that the indication information also includes frequency domain resource allocation FRIV, the FRIV indicates the starting position and number of comb teeth, and the FRIV is used to determine The frequency domain resources occupied by the second terminal device for transmission, and the number of bits occupied by the FRIV are determined based on the following formula:

in, Indicates the number of comb teeth.
A communication method, characterized by including:

The second terminal device receives resource indication information from the network device or the first terminal device, where the resource indication information indicates a fourth resource, and the fourth resource is a resource within the channel opportunity time COT preempted by the first terminal device;

The second terminal device transmits data on the fourth resource.
The method of claim 39, further comprising:

The second terminal device sends scheduling request information to the network device, where the scheduling request information requests resources for transmission.
A communication method, characterized by including:

The first terminal device receives indication information from the network device. The indication information is used to instruct the second terminal device to occupy resources for transmission. The resources are included in the channel opportunity time COT preempted by the first terminal device. The resources Including time domain resources and/or frequency domain resources;

The first terminal device preempts the COT.
The method according to claim 41, characterized in that the indication information includes time domain resource allocation TRIV, the TRIV indicates the time domain resource occupied by the second terminal device, and the starting position of the TRIV is any of the following: One item:

A time domain unit carrying the indication information;

The end position of the time domain unit corresponding to the second resource in the COT, the second resource is used for transmission of the first terminal device;

The next time domain unit at the end position of the time domain unit corresponding to the second resource;

The time domain unit that carries the scheduling request corresponding to the first terminal device; or

A time domain unit that carries the cache status report corresponding to the first terminal device.
The method according to claim 41 or 42, characterized in that the indication information includes TRIV, the TRIV is used to indicate a first time domain resource location and a second time domain resource location, and the first time domain resource location The time domain resources between the second time domain resource position and the second time domain resource position are the time domain resources occupied by the second terminal device for transmission.
The method according to any one of claims 41 to 43, characterized in that the indication information also includes frequency domain resource allocation FRIV, the FRIV indicates the starting position and number of comb teeth, and the FRIV is used to determine The frequency domain resources occupied by the second terminal device for transmission, and the number of bits occupied by the FRIV are determined based on the following formula:

in, Indicates the number of comb teeth.
A communication device, characterized in that the device includes a unit for performing the steps of the method according to any one of claims 1 to 19, or the device includes a unit for performing the steps of any one of claims 20 to 34. A unit for the steps of the method, or the device includes a unit for performing the steps of the method as claimed in any one of claims 35 to 38, or the device includes a unit for performing the steps of the method as claimed in claim 39 or 40 Means for the steps of the method, or the apparatus comprises means for performing the steps of the method according to any one of claims 41 to 44.
A communication device, characterized in that the device includes a processor, the processor is coupled to a memory, the memory stores instructions, and when the instructions are executed by the processor, the communication device executes the instructions as claimed in the claim. The method of any one of claims 1 to 19, or performing the method of any one of claims 20 to 34, or performing the method of any one of claims 35 to 38, or performing The method of claim 39 or 40, or performing the method of any one of claims 41 to 44.
A communication device, characterized in that the device includes a logic circuit, the logic circuit is used to couple with an input/output interface and transmit data through the input/output interface to perform any one of claims 1 to 19 The method described in the item, or performing the method described in any one of claims 20 to 34, or performing the method described in any one of claims 35 to 38, or performing the method described in claim 39 or 40 method, or perform the method according to any one of claims 41 to 44.
A computer-readable storage medium, characterized in that the computer-readable storage medium is used to store a computer program. When the computer program is run on a computer, it causes the computer to execute any one of claims 1 to 19. The method described in the item, or performing the method described in any one of claims 20 to 34, or performing the method described in any one of claims 35 to 38, or performing the method described in claim 39 or 40 method, or perform the method according to any one of claims 41 to 44.
A computer program product, characterized in that the computer program product includes: computer program code. When the computer program code is run, the method as described in any one of claims 1 to 19 is implemented, or the method as described in any one of claims 1 to 19 is executed. The method of any one of claims 20 to 34, or performing the method of any one of claims 35 to 38, or performing the method of claims 39 or 40, or performing claim 41 The method described in any one of to 44.