CN117460065A

CN117460065A - Communication method and device

Info

Publication number: CN117460065A
Application number: CN202210963867.1A
Authority: CN
Inventors: 刘云; 黎超; 焦瑞晟
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-07-14
Filing date: 2022-08-11
Publication date: 2024-01-26

Abstract

The embodiment of the application provides a communication method and device. The method comprises the following steps: the first terminal device preempting the channel opportunity time COT, sending request information to the network device, wherein the request information is used for requesting the network device to send indication information, the indication information is used for determining that first resources in the COT are allocated to at least one second terminal device, the first terminal device receives the indication information from the network device, and the first resources are allocated to the at least one second terminal device based on the indication information. According to the scheme provided by the embodiment of the application, the network equipment can schedule the resources in the unlicensed spectrum for the terminal equipment, and the throughput and the spectrum utilization rate of the system are improved.

Description

Communication method and device

The present application claims priority from the chinese patent application filed on day 14 of month 07 of 2022, filed under application number 202210832122.1, entitled "a method of transmission for side-links", the entire contents of which are incorporated herein by reference.

Technical Field

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

Background

In a Sidelink (SL) transmission procedure of a New Radio (NR) system, a terminal device needs to select a physical resource for transmitting data in a resource pool. As an implementation manner, the terminal device may select a physical resource for transmitting data in the resource pool according to the indication information sent by the network device. Typically, the physical resources indicated by the network device to the terminal device are resources within the licensed spectrum. For resources in the unlicensed spectrum, the terminal device may transmit data by preempting a channel or sharing resources obtained by other terminal devices preempting the channel. To improve system throughput and spectrum utilization, it is a considerable problem how to have network devices schedule resources within unlicensed spectrum for terminal devices.

Disclosure of Invention

The embodiment of the application provides a communication method and a communication device, which can enable network equipment to schedule resources in unlicensed spectrum for terminal equipment, and improve throughput and spectrum utilization rate of a system.

In a first aspect, a communication method is provided, which may be performed by a terminal device, or may also be performed by a component (e.g., a chip or a circuit) of the terminal device, which is not limited. For convenience of description, an example will be described below in terms of execution by the terminal device.

The method comprises the following steps: the first terminal device preempting the channel opportunity time COT, the first terminal device sending request information to the network device, the request information being used for requesting the network device to send indication information, the indication information being used for determining that first resources in the COT are allocated to at least one second terminal device, the first terminal device receiving the indication information from the network device.

Based on the above scheme, after the first terminal device seizes the COT (the resources in the COT are the resources in the unlicensed spectrum), the first terminal device in the COT is requested to be allocated to the network device to transmit the remaining resources (i.e., the first resources). Therefore, the first terminal equipment can share the first resource to the second terminal equipment based on the indication information sent by the network equipment, so that the throughput and the spectrum utilization rate of the system can be improved. And the resources in the unlicensed spectrum scheduled to the second terminal equipment by the network equipment are preempted by the first terminal equipment, so that the situation that the resources scheduled by the network equipment are not preempted by the first terminal equipment, so that the resource waste of the indication information is caused can be avoided, and the scheme can also improve the success rate of the access of the second terminal equipment on the shared resources.

With reference to the first aspect, in some implementations of the first aspect, the request information is carried in a scheduling request resource, where the scheduling request resource corresponds to a first channel access priority, and the first channel access priority is greater than or equal to a channel access priority of the COT, and a channel access priority corresponding to a service of at least one second terminal device of the allocated resource is greater than or equal to the first channel access priority, or a channel access priority corresponding to a service of at least one second terminal device of the allocated resource is greater than or equal to a channel access priority of the COT.

Based on the scheme, the network equipment is configured with the scheduling request resources corresponding to the different channel access priorities, so that the terminal equipment corresponding to the channel access priorities of different services can send request information on the scheduling request resources corresponding to the channel access priorities, and the first resource can be prevented from being shared to the terminal equipment corresponding to the services and having the channel access priority lower than the COT.

With reference to the first aspect, in certain implementation manners 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 first information to the network device, wherein the first information is used for indicating at least one of the following: and the second resource is used for the transmission of the first terminal equipment, the side uplink identification of the first terminal equipment, the transmission priority of the first terminal equipment or the channel access priority of the COT.

Based on the above scheme, when the first information includes the end position of the time domain unit corresponding to the second resource, the network device may determine the time when the transmission of the first terminal device ends in the COT, that is, may determine the available resource in the COT (the available resource may be understood as a resource that may be scheduled for other terminal devices to use), and may further determine the sending timing of the indication information, so as to avoid that the indication information is received by the first terminal device after the transmission of the first terminal device ends, thereby causing the waste of the first resource. When the first information includes a side-uplink identification of the first terminal device, the network device may determine other terminal devices having a transmission relationship with the first terminal device, so that the first resource may be preferentially allocated to the terminal devices having a transmission relationship with the first terminal device. When the first information includes a transmission priority of the first terminal device or a channel access priority of the COT, the network device may avoid allocation of the first resource to the terminal device of low priority (transmission priority or channel access priority corresponding to the service) when allocating the first resource.

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

Based on the scheme, the indication information needs to be received by the first terminal equipment before the first moment, so that the first terminal equipment can be ensured to have time to process the indication information, and the first resource is shared to other terminal equipment by combining 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, where the resource indication information is used to indicate resources occupied by transmission by a third terminal device, and the third terminal device is one of the at least one second terminal device.

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

Based on the scheme, the first terminal equipment can receive the indication information at the fixed time domain position, so that blind detection is avoided, and power consumption of the first terminal equipment is saved.

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

Based on the above scheme, the network device does not indicate the specific allocation situation of the first resource to the first terminal device, and the second terminal device can transmit the indication of the first resource through the network device.

With reference to the first aspect, in certain implementation manners of the first aspect, the indication information includes any one of the following: 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.

With reference to the first aspect, in certain implementation manners 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 at least one of the following to the network device: information of the terminal device having a transmission relation 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, service quality information of the first terminal device.

Based on the above scheme, if the first terminal device sends the information of the terminal device having a transmission relationship with the first terminal device to the network device, the network device may determine the terminal device having a transmission relationship with the first terminal device, so that the first resource may be preferentially allocated to the terminal device having a transmission relationship with the first terminal device. If the first terminal device sends the reference signal receiving power information, the receiving quality information and the service quality information of the first terminal device to the network device, the network device can allocate the available resources in the COT preempted by the first terminal device with high reference signal receiving power/receiving quality/service quality preferentially.

With reference to the first aspect, in certain implementation manners of the first aspect, the indication information is further used to indicate at least one of: and the side-link identification 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, and the frequency domain information of the third resource occupied by the at least one second terminal device.

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

With reference to the first aspect, in some implementations of the first aspect, the indication information includes a time domain resource allocation TRIV, where the TRIV indicates a time domain resource occupied by at least one second terminal device, and a starting position of the TRIV is any one of the following: a time domain unit carrying indication information; the end position of a time domain unit corresponding to a second resource in the COT, wherein the second resource is used for transmission of the first terminal equipment; a next time domain unit of the ending position of the time domain unit corresponding to the second resource; a time domain unit for bearing a scheduling request corresponding to the first terminal equipment; or a time domain unit carrying a buffer status report corresponding to the first terminal device.

With reference to the first aspect, in some implementations of the first aspect, the indication information includes a TRIV, where the TRIV is used to indicate a first time domain resource location and a second time domain resource location, and a time domain resource between the first time domain resource location and the second time domain resource location is a time domain resource occupied by transmission of a third terminal device, and the third terminal device is one of at least one second terminal device.

Based on the above scheme, the network device may indicate, by using the TRIV, a plurality of consecutive time domain resources allocated to one second terminal device.

With reference to the first aspect, in certain implementation manners of the first aspect, the indication information further includes a frequency domain resource allocation, FRIV, the FRIV indicating a start position and a number of comb teeth, the FRIV being used to determine frequency domain resources occupied by the at least one second terminal device transmission, and a number of bits occupied by the FRIV being determined based on the following formula:

wherein,indicating the number of teeth.

With reference to the first aspect, in certain 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 a third terminal device, the third 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 comprises the fourth resource.

With reference to the first aspect, in certain implementations of the first aspect, the method further includes: the first terminal device updates the COT information, which may indicate the number of time-domain units remaining in the COT.

With reference to the first aspect, in certain implementations of the first aspect, the first terminal device generates or updates the resource indication information based on the indication information and at least one of: the upper limit of the number of time domain units corresponding to the COT, or the transmission priority of at least one second 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 of transmission priority from high to low based on the indication information.

With reference to the first aspect, in certain implementations of the first aspect, the method further includes: the first terminal equipment sends first feedback information to the network equipment, wherein the first feedback information is used for feeding back the resource indication information sent by the first terminal equipment.

With reference to the first aspect, in some implementations of the first aspect, if the indication information is received by the first terminal device after the first time, the first terminal device does not generate or update the resource indication information based on the indication information, and the first time is determined based on an end position of a time domain unit corresponding to the second resource in the COT and the first processing delay, and the method further includes: the first terminal device sends second feedback information to the network device, wherein the second feedback information is used for feeding back that the first terminal device does not generate or update the resource indication information.

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

In a second aspect, a communication method is provided, which may be performed by a terminal device, or may also be performed by a component (e.g., a chip or a circuit) of the terminal device, which is not limited. For convenience of description, an example will be described below in terms of execution by the terminal device.

The method comprises the following steps: the second terminal equipment receives resource indication information from the network equipment or the first terminal equipment, the resource indication information indicates fourth resources, the fourth resources are resources in COT preempted by the first terminal equipment, and the second terminal equipment transmits data on the fourth resources.

The network device or the first terminal device can transmit the residual resources to the second terminal device for use in the COT preempted by the first terminal device, so that the throughput and the spectrum utilization rate of the system can be improved. And the network device or the first terminal device schedules the resources in the unlicensed spectrum to the second terminal device, which is preempted by the first terminal device, so that the success rate of the second terminal device accessing the scheduled resources can be improved.

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

In a third aspect, a communication method is provided, which may be performed by a network device, or may also be performed by a component (e.g., a chip or a circuit) of the network device, which is not limited thereto. For ease of description, the following description will be given by way of example as being executed by a network device.

The method comprises the following steps: the network device receives request information from the first terminal device, the request information is used for requesting the network device to send indication information, the indication information is used for determining that first resources in COT preempted by the first terminal device are allocated to at least one second terminal device, and the network device sends the indication information to the first terminal device.

Based on the above scheme, the network device may allocate the first terminal device in the COT to transmit the remaining resources (i.e., the first resources) at the request of the first terminal device, and indicate the allocation to the first terminal device. Therefore, the first terminal equipment can share the first resource to other terminal equipment based on the indication information sent by the network equipment, so that the throughput and the spectrum utilization rate of the system can be improved. And the resources in the unlicensed spectrum scheduled to other terminal equipment by the network equipment are preempted by the first terminal equipment, so that the resource waste of the indication information caused by the fact that the first terminal equipment cannot preempt the resources scheduled by the network equipment can be avoided, and the scheme can also improve the success rate of accessing the shared resources by other terminal equipment.

With reference to the third aspect, in some implementations of the third aspect, the request information is carried in a scheduling request resource, where the scheduling request resource corresponds to a first channel access priority, and the first channel access priority is greater than or equal to a channel access priority of the COT, and a channel access priority corresponding to a service of at least one second terminal device of the allocated resource is greater than or equal to the first channel access priority, or a channel access priority corresponding to a service of at least one second terminal device of the allocated resource is greater than or equal to a channel access priority of the COT.

With reference to the third aspect, in certain 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 first information from the first terminal device, the first information being used to indicate at least one of: the end position of a time domain unit corresponding to a second resource in the COT, wherein the second resource is used for transmission of the first terminal equipment; a side uplink identification of the first terminal device; a transmission priority of the first terminal device; or channel access priority of the COT.

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

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

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

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

With reference to the third aspect, in certain implementations of the third aspect, the indication information includes any one of: 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.

With reference to the third aspect, in certain 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: information of the terminal device having a transmission relation 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, service quality information of the first terminal device.

With reference to the third aspect, in certain implementations of the third aspect, the indication information is further used to indicate at least one of: a side-uplink identification of at least one second terminal device; time domain information of the third resource occupied by at least one second terminal device; and at least one second terminal device occupies the frequency domain information of the third resource.

With reference to the third aspect, in some implementations of the third aspect, the indication information includes a time domain resource allocation TRIV, where TRIV indicates a time domain resource occupied by at least one second terminal device, and a starting position of TRIV is any one of the following: a time domain unit carrying indication information; the end position of a time domain unit corresponding to a second resource in the COT, wherein the second resource is used for transmission of the first terminal equipment; a next time domain unit of the ending position of the time domain unit corresponding to the second resource; a time domain unit for bearing a scheduling request corresponding to the first terminal equipment; or a time domain unit carrying a buffer status report corresponding to the first terminal device.

With reference to the third aspect, in some implementations of the third aspect, the indication information includes a TRIV, where the TRIV is used to indicate a first time domain resource location and a second time domain resource location, and a time domain resource between the first time domain resource location and the second time domain resource location is a time domain resource occupied by transmission of a third terminal device, and the third terminal device is one of at least one second terminal device.

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

wherein,indicating the number of teeth.

With reference to the third aspect, in certain 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 indicating a fourth resource, the fourth resource being used for transmission by the third terminal device, the third terminal device being one of the at least one second terminal device, the first resource comprising the fourth resource.

With reference to the third aspect, in certain implementations of the third aspect, the method further includes: the network device receives scheduling request information from the second terminal device, the scheduling request information requesting resources for transmission.

Advantageous effects of the implementation manner of the third aspect described above may refer to descriptions of advantageous effects of the related implementation manner of the first aspect, and are not repeated here.

In a fourth aspect, a communication method is provided, which may be performed by a network device, or may also be performed by a component (e.g., a chip or a circuit) of the network device, which is not limited thereto. For ease of description, the following description will be given by way of example as being executed by a network device.

The method comprises the following steps: the network equipment generates indication information, the indication information is used for indicating resources occupied by the transmission of the second terminal equipment, the resources are contained in channel opportunity time COT occupied by the first terminal equipment, the resources comprise time domain resources and/or frequency domain resources, and the network equipment sends the indication information to the first terminal equipment.

Based on the above scheme, the network device may allocate the remaining resources (i.e., the first resources) for the first terminal device transmission in the COT to the second terminal device, and indicate the allocated resources to the first terminal device. Therefore, the first terminal equipment can share the first resource to other terminal equipment based on the indication information sent by the network equipment, so that the throughput and the spectrum utilization rate of the system can be improved.

With reference to the fourth aspect, in some implementations of the fourth aspect, the indication information includes a time domain resource allocation TRIV, where TRIV indicates a time domain resource occupied by the second terminal device, and a starting position of TRIV is any one of the following: a time domain unit carrying indication information; the end position of a time domain unit corresponding to a second resource in the COT, wherein the second resource is used for transmission of the first terminal equipment; a next time domain unit of the ending position of the time domain unit corresponding to the second resource; a time domain unit for bearing a scheduling request corresponding to the first terminal equipment; or a time domain unit carrying a buffer status report corresponding to the first terminal device.

With reference to the fourth aspect, in some implementations of the fourth aspect, the indication information includes a TRIV, where the TRIV is used to indicate a first time domain resource location and a second time domain resource location, and a time domain resource between the first time domain resource location and the second time domain resource location is a time domain resource occupied by the second terminal device transmission.

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

Wherein,indicating the number of teeth.

In a fifth aspect, a communication method is provided, which may be performed by a terminal device, or may also be performed by a component (e.g., a chip or a circuit) of the terminal device, which is not limited thereto. For convenience of description, an example will be described below in terms of execution by the terminal device.

The method comprises the following steps: the terminal equipment receives indication information from the network equipment, wherein the indication information is used for indicating resources occupied by the transmission of the second terminal equipment, the resources are contained in channel opportunity time COT preempted by the first terminal equipment, and the resources comprise time domain resources and/or frequency domain resources; the first terminal device preempts the COT.

Based on the scheme, the first terminal equipment can share the residual resources transmitted by the first terminal equipment in the COT preempted by the first terminal equipment to the second terminal equipment based on the indication of the network equipment, so that the throughput and the spectrum utilization rate of the system can be improved.

With reference to the fifth aspect, in some implementations of the fifth aspect, the indication information includes a time domain resource allocation TRIV, where TRIV indicates a time domain resource occupied by the second terminal device, and a starting position of TRIV is any one of the following: a time domain unit carrying indication information; the end position of a time domain unit corresponding to a second resource in the COT, wherein the second resource is used for transmission of the first terminal equipment; a next time domain unit of the ending position of the time domain unit corresponding to the second resource; a time domain unit for bearing a scheduling request corresponding to the first terminal equipment; or a time domain unit carrying a buffer status report corresponding to the first terminal device.

With reference to the fifth aspect, in some implementations of the fifth aspect, the indication information includes a TRIV, where the TRIV is used to indicate a first time domain resource location and a second time domain resource location, and a time domain resource between the first time domain resource location and the second time domain resource location is a time domain resource occupied by the second terminal device transmission.

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

wherein,indicating the number of teeth.

In a sixth aspect, a communication device is provided for performing the method of any of the possible implementations of the first to fifth aspects. In particular, the apparatus may comprise means and/or modules, such as a processing unit and/or a communication unit, for performing the method in any of the possible implementations of the first to fifth aspects.

In one implementation, the apparatus is a terminal device (e.g., a first terminal device, and also a second terminal device) or a network device. When the apparatus 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, the apparatus is a chip, a system-on-chip or a circuit for a terminal device (e.g., a first terminal device, and also e.g., a second terminal device) or a network device. When the apparatus is a chip, a system-on-chip or a circuit for a terminal device or a network device, the communication unit may be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin or a related circuit or the like on the chip, the system-on-chip or the circuit; the processing unit may be at least one processor, processing circuit or logic circuit, etc.

In a seventh aspect, there is provided a communication apparatus comprising: at least one processor configured to execute a computer program or instructions stored in a memory to perform a method according to any one of the possible implementations of the first to fifth aspects. Optionally, the apparatus further comprises a memory for storing a computer program or instructions. Optionally, the apparatus further comprises a communication interface through which the processor reads the computer program or instructions stored in the memory.

In one implementation, the apparatus is a terminal device (e.g., a first terminal device, and also a second terminal device) or a network device.

In another implementation, the apparatus is a chip, a system-on-chip or a circuit for a terminal device (e.g., a first terminal device, and also e.g., a second terminal device) or a network device.

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

The operations such as transmitting and acquiring/receiving, etc. related to the processor may be understood as operations such as outputting and receiving, inputting, etc. by the processor, or may be understood as operations such as transmitting and receiving by the radio frequency circuit and the antenna, if not specifically stated, or if not contradicted by actual function or inherent logic in the related description, which is not limited in this application.

A ninth aspect provides a computer readable storage medium storing program code for execution by a device, the program code comprising instructions for performing the method of any one of the possible implementations of the first to fifth aspects.

In a tenth aspect, there is provided a computer program product containing instructions which, when run on a computer, cause the computer to perform the method of any one of the possible implementations of the first to fifth aspects described above.

Drawings

Fig. 1 is a schematic diagram of a network architecture according to an embodiment of the present application.

Fig. 2 is a schematic flow chart of scheduling resources in a mode 1 manner according to an embodiment of the present application.

Fig. 3 is a schematic diagram of time intervals between resources scheduled using a mode 1 method according to an embodiment of the present application.

Fig. 4 is an interaction flow chart of a communication method provided in an embodiment of the present application.

Fig. 5 is a schematic diagram of a second resource end location provided in an embodiment of the present application.

Fig. 6 is a schematic diagram of determining a transmission timing of indication information according to an embodiment of the present application.

Fig. 7 is another schematic diagram of determining a transmission opportunity of indication information according to an embodiment of the present application.

Fig. 8 is a schematic diagram of a positional relationship between a third resource and a first resource according to an embodiment of the present application.

Fig. 9 is a schematic diagram of updating the number of remaining timeslots in the COT by the first terminal device according to the embodiment of the present application.

Fig. 10 is a timing diagram between steps of a method 400 provided in an embodiment of the present application.

Fig. 11 is an interaction flow chart of another communication method provided in an embodiment of the present application.

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

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

Detailed Description

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

Fig. 1 is a network architecture provided in an embodiment of the present application.

The communication system 100 shown in fig. 1 comprises a network device 10 and at least one terminal device, e.g. a terminal device 20, a terminal device 21, in which communication system the terminal device 20 and the terminal device 21 can send upstream data/signals/information to the network device 10, and the network device 10 can send downstream data/signals/information to any one of the terminal device 20 and the terminal device 21. In addition, the terminal device 20 may also transmit data/signals/information with the terminal device 21.

The communication method provided in the embodiment of the present application may also relate to a device or a transmission node not shown in fig. 1, and of course, the communication method provided in the embodiment of the present application may also include only a part of devices or transmission nodes shown in fig. 1, which is not limited in the embodiment of the present application.

The network architecture applied to the embodiments of the present application is merely illustrative, and the network architecture to which the embodiments of the present application are applied is not limited, and any network architecture capable of implementing the functions of the respective devices described above is applicable to the embodiments of the present application.

The technical solution of the embodiment of the application can be applied to various communication systems, for example: long term evolution (long term evolution, LTE) systems, advanced long term evolution (LTE-a) systems, LTE frequency division duplex (frequency division duplex, FDD) systems, LTE time division duplex (time division duplex, TDD), wireless fidelity (wireless fidelity, wi-Fi) communication systems, universal mobile telecommunication systems (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX) communication systems, fifth generation (5th Generation,5G) systems or future evolution communication systems (e.g., 6G mobile communication systems), vehicle-to-other devices (vehicles-to-X V X), where V2X may include vehicle-to-internet (vehicle to network, V2N), vehicle-to-vehicle (vehicle to vehicle, V2V), vehicle-to-infrastructure (vehicle to infrastructure, V2I), vehicle-to-pedestrian (vehicle to pedestrian, V2P), etc., long term evolution technology for workshop communications (long term evolution-vehicle, LTE-V), vehicle networking, machine-type communications (machine type communication, MTC), internet of things (Internet of things, ioT), long term evolution for machine-to-machine (long term evolution-machine-M), machine-to-M (machine to machine, machine-M, etc.

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

Terminal equipment in the embodiment of the application: may also be referred to as a terminal, access terminal, subscriber unit, user Equipment (UE), subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or user equipment. A terminal device is a device that includes wireless communication functionality (providing voice/data connectivity to a user). For example, a handheld device having a wireless connection function, an in-vehicle device, or the like. The terminals in embodiments of the present application may be mobile phones (mobile phones), tablet computers (pad), computers with wireless transceiving functions, trains, airplanes, mobile internet devices (mobile internet device, MID), virtual Reality (VR) terminals, augmented reality (augmented reality, AR) terminals, wireless terminals in industrial control (industrial control) (e.g., robots, etc.), wireless terminals in the internet of vehicles (e.g., car devices, car modules, vehicles, etc.), wireless terminals in the unmanned aerial vehicle (self driving), wireless terminals in the telemedicine (remote medical), wireless terminals in the smart grid (smart grid), wireless terminals in the transportation security (transportation safety), wireless terminals in the smart city (smart city), wireless terminals in the smart city (smart home), cellular phones, cordless phones, session initiation protocols (session initiation protocol, SIP) phone, wireless local loop (wireless local loop, WLL) station, personal digital assistant (personal digital assistant, PDA), handheld device with wireless communication capability, computing device or other processing device connected to a wireless modem, in-vehicle device, wearable device, terminal in 5G network or terminal in future evolution network, etc. It will be appreciated that all or part of the functionality of the terminal device in this application may also be implemented by software functions running on hardware, or by virtualized functions instantiated on a platform (e.g. a cloud platform).

The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wearing and developing wearable devices by applying a wearable technology, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various 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 radio access network to provide wireless communication functionality for terminal devices. For example, the network device may be a radio access network (radio access network, RAN) node, also referred to as access network device, that accesses the terminal device to the wireless network.

The network devices include, but are not limited to: an evolved Node B (eNB), a radio network controller (radio network controller, RNC), a Node B (Node B, NB), a base station controller (base station controller, BSC), a base transceiver station (base transceiver station, BTS), a home evolved Node B, heNB, or home Node B, HNB), a baseBand unit (BBU), a server, a wearable device, an in-vehicle device, an Access Point (AP) in a WIFI system, a radio relay Node, a radio backhaul Node, a transmission point (transmission point, TP), or a transmission reception point (transmission and reception point, TRP), etc., may also be 5G, such as a gNB in an NR system, or a transmission point (TRP or TP), one or a group of antenna panels (including a plurality of antenna panels) of a base station in a 5G system, or may also be a network Node constituting a gNB or a 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, a balloon station, or the like. It will be appreciated that all or part of the functionality of the network device in this application may also be implemented by software functions running on hardware, or by virtualized functions instantiated on a platform (e.g. a cloud platform).

In some deployments, the gNB may include a Centralized Unit (CU) and DUs. The gNB may also include an active antenna unit (active antenna unit, AAU). The CU implements part of the functionality of the gNB and the DU implements part of the functionality of the gNB. For example, the CU is responsible for handling non-real time protocols and services, implementing the functions of the radio resource control (radio resource control, RRC), packet data convergence layer protocol (packet data convergence protocol, PDCP) layer. The DUs are responsible for handling physical layer protocols and real-time services, implementing the functions of the radio link control (radio link control, RLC), medium access control (media access control, MAC) and Physical (PHY) layers. The AAU realizes part of physical layer processing function, radio frequency processing and related functions of the active antenna. The information of the RRC layer is generated by the CU and finally becomes PHY layer information through PHY layer encapsulation of DU, or is converted from the information of the PHY layer. Thus, under this architecture, higher layer signaling, such as RRC layer signaling, may also be considered to be sent by DUs, or by dus+aaus. It is understood that the network device may be a device comprising one or more of a CU node, a DU node, an AAU node. In addition, the CU may be divided into network devices in an access network (radio access network, RAN), or may be divided into network devices in a Core Network (CN), which is not limited in this application.

The terms referred to in the present application are briefly described below, and the following examples are not repeated.

1. Side-uplink resource pool (resource pool)

In an NR system, the transmission of the side links is based on a resource pool. A resource pool is a logical concept, and a resource pool includes a plurality of (i.e., two or more, unless specifically stated otherwise, a plurality of references in this application) physical resources, any of which may be used to transmit data. For example, one resource pool includes one or more sub-channels (sub-channels), the frequency domain resources occupied by each sub-channel in one resource pool (such as the number of physical resource blocks (physical resource block, PRBs)) are the same, and the frequency domain resources occupied by the sub-channels belonging to different resource pools may be different.

The terminal device needs to select a physical resource for transmitting the data from the resource pool before transmitting the data.

2. Mode1 (Mode 1) Mode

The Mode that the terminal device is controlled by the network device when selecting resources in the resource pool is called Mode1 Mode, that is, the terminal device selects resources for transmitting data from the resource pool according to the indication information of the network device in Mode1 Mode.

The scheduling of resources in Mode1 may include the following steps shown in fig. 2:

(1) The network device transmits downlink control signaling, for example, downlink control information (downlink control information, DCI) 3_0, DCI3_0 includes a resource #1 scheduled to UE1, and UE1 uses the resource #1 to transmit data or signals to UE 2.

Illustratively, the DCI3_0 includes an information field (e.g., a time slot: a timer; sl-PSFCH-to-PUCCH field) for determining a time interval between steps, wherein the timer is used to define a time interval between the DCI3_0 and a resource #1 (a location of a physical direct link control channel (physical sidelink control channel, PSCCH)/a physical direct link shared channel (physical sidelink shared channel, PSSCH) shown in FIG. 3), the sl-PSFCH-to-PUCCH field is used to determine a time interval between a physical direct link feedback channel (physical sidelink feedback channel, PSFCH) and a physical uplink control channel (physical uplink control channel, PUCCH), and the time interval between a first resource and a physical side link feedback channel (physical sidelink feedback channel, PSFCH) may be determined based on information such as a PSFCH configuration period of a resource pool. It should be further noted that DCI3_0 carries a time interval between resources (e.g., PSCCH/PSSCH, PSFCH, PUCCH) for transmission, where the time domain position of the PSFCH/PUCCH may be determined based on the time domain position of the PSCCH/PSSCH.

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

(2) UE1 transmits signals or data to UE2 on resource # 1.

(3) UE2 replies feedback information to UE1 over the PSFCH.

(4) The UE1 replies feedback information to the network device through the PUCCH, where the feedback information indicates whether the UE1 transmits a signal or data to the UE2 successfully.

3. Mode2 (Mode 2) Mode

The manner in which the terminal device can autonomously select a resource for transmitting data from the resource pool is referred to as a Mode2 manner. I.e. the terminal device has the opportunity to autonomously decide the resource selection and the resource allocation, for example, the terminal device may exclude some occupied or more interfered resources according to the perceived occupation situation of the spectrum, and select to transmit the resources on the idle or less interfered resources.

4、SL-U

SL-U means that the resources within the unlicensed spectrum (unlicensed band) are used for sidelink transmission. Two access mechanisms are included, type 1 (Type 1) and Type 2 (Type 2).

Type 1 is suitable for the scenario of preempting the channel, and the UE needs to listen before talk (listen before talk, LBT) before transmitting data, i.e. the UE needs to monitor the channel before transmitting data, and the duration of LBT performed by UEs with different transmission priorities is different. Transmission priority may be understood as a transmission priority corresponding to a service, for example, the higher the delay requirement, the higher the transmission priority corresponding to a service.

Type 2 is suitable for sharing transmission resources which are preempted by the User Equipment (UE) in a Type 1 mode to other UE. For example, UE2 preempts a transmission opportunity for a period of time, i.e., channel opportunity time (channel occupancy time, COT), by Type 1, UE2 may transmit itself using the resources in the COT, or may instruct other UEs (e.g., UE 2) to transmit using the remaining resources in the COT. For example, UE1 preempts the COT and transmits resources in the COT, UE1 wants to share the remaining resources in the COT to UE2 through Type 2, and UE2 may occupy a channel corresponding to the COT at intervals after UE1 finishes transmitting, where the intervals may be 25 μs or 16 μs. That is, UE2 may perceive the channel corresponding to the COT after UE1 finishes transmitting, and if the channel is not occupied within 25 μs or 16 μs, UE2 occupies the channel.

As described above, in Mode 1, the resources indicated by the network device for the terminal device are resources in the licensed spectrum. In a similar manner to Mode 1, the network device may also indicate to the terminal device resources within the unlicensed spectrum for transmission by the terminal device.

In one possible implementation, after receiving a scheduling request (scheduling request, SR) sent by a terminal device, the network device sends indication information to the terminal device to indicate resources in an unlicensed spectrum for transmission by the terminal device. And the terminal equipment receives the indication information and then performs LBT, and after the channel occupation is successful, the terminal equipment uses the resources in the unlicensed spectrum indicated by the network equipment to transmit.

In this embodiment, in order to avoid that the network device seizes resources in the unlicensed spectrum, causing interference to the system, signaling or the like on the network device side is restricted to be transmitted on resources in the licensed spectrum. Therefore, the network device cannot ensure that the resources scheduled for the terminal device can be occupied by the terminal device, for example, the channel corresponding to the resources scheduled by the network device is busy or occupied by other terminal devices, in this case, the LBT failure of the terminal device is caused, so that the terminal device cannot occupy the resources in the unlicensed spectrum indicated by the network device, thereby causing waste of the scheduling signaling of the network device, and the transmission of the terminal device cannot be performed.

In view of this, the embodiments of the present application provide a communication method, which can enable a network device to schedule unlicensed resources for a terminal device, so as to improve throughput and spectrum utilization of a system.

Fig. 4 is a flowchart of a communication method according to an embodiment of the present application. The method 400 shown in fig. 4 includes the steps of:

s410, the first terminal device sends request information to the network device, where the request information is used to request the network device to send indication information, where the indication information is used to determine that the first resource in the COT is allocated to at least one second terminal device. Correspondingly, the network device receives the request information.

Before S410, the first terminal device may preempt the COT in the Type 1 manner, where the COT in S410 is the COT that the first terminal device has preempted, and the first resource in the COT (the first resource may be understood as a resource remaining in transmission by the first terminal device in the COT) is a resource in an unlicensed spectrum, and the second terminal device is another terminal device except the first terminal device.

Unlicensed spectrum is understood to be a well-known unlicensed band that may be used without application, e.g., unlicensed bands of 2.4GHz, 5.8GHz, etc.

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

For example, the threshold may be 4 slots when the subcarrier spacing is 15kHz, and 8 slots when the subcarrier spacing is 30kHz, which is not limited in this application.

In one possible implementation, the request information is carried in a scheduling request resource, where 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 of the allocated resources 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 of the allocated resources is greater than or equal to the channel access priority of the COT.

It will be appreciated that the scheduling request resource is a resource configured by the network device, and may be a periodic resource, specifically used for transmitting 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 (i.e., one scheduling request resource corresponds to at least two channel access priorities). Terminal devices of different transmission priorities send request information on different scheduling request resources. So that the network device can determine which transmission priority terminal devices to allocate the first resource to based on the scheduling request resource carrying the request information. The network device allocates the first resource following: the channel access priority corresponding to the service of the second terminal equipment allocated with the resources is greater than or equal to the first channel access priority, or the channel access priority corresponding to the service of the second terminal equipment allocated with the resources is greater than or equal to the channel access priority of the COT.

For example, the first terminal device may inform the network device COT of the channel access priority or the side-uplink identification of the first terminal device through RRC signaling. Different scheduling request resources correspond to different channel access priorities, after receiving request information borne by the scheduling request resources, the network equipment can determine indication information by combining information informed by RRC signaling, can realize the effect of quickly replying the indication information, and is particularly suitable for a scene with shorter transmission duration occupied by the first terminal equipment in COT.

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

In one possible implementation, the method 400 optionally further 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 second resource is used for the transmission of the first terminal equipment at the end position of the time domain unit corresponding to the second resource in the COT;

a side uplink identification of the first terminal device;

A transmission priority of the first terminal device; or (b)

Channel access priority (CPA) of COT.

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 in the COT, and the indication information can be sent to the first terminal device before the first terminal device ends in transmission, thereby avoiding wasting the resource.

Illustratively, the first information includes information #1 indicating an end position of a time domain unit corresponding to the second resource within the COT, where the information #1 may indicate a time interval (the time interval may be a number of time units or may be a time interval characterized by a time unit like milliseconds) between the end position and a transmission time of the request information/SR/buffer status report (buffer state report, BSR); or the information #1 may indicate the number of time domain units corresponding to the second resource in the COT and the position of the time domain units carrying the request information/SR/BSR within the COT, or the information #1 may indicate the number of time domain units corresponding to the second resource in the COT and the starting position of the COT on the time domain units.

The side-uplink identification of the first terminal device may be used for the network device to match a destination Identification (ID) corresponding to the destination index (destination index) of 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.

Illustratively, the side-link identification (sidelink ID) of the first terminal device may be: source ID (source ID) or destination ID (destnation ID), to which the present application is not limited.

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

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

It will be appreciated that the first information may be sent with the request information, or the first information may be sent after the request information, as this application is not limited in this regard. For example, after receiving the request information, the network device may send information to the first terminal device, where the first terminal device is required to send the first information, and the first terminal device sends the first information according to the requirement of the network device.

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

As shown in fig. 5, the second resource includes a slot #1, a slot #2, a slot #3, and a slot #4, where the end position of the slot #4 is the end position of the second resource, and the second resource is a resource in an unlicensed spectrum used for transmission by the first terminal device, it can be understood that the request information and the first information in S410 are transmitted through the resource in the licensed spectrum, and the request information and the first information may be sent as soon as possible after the first terminal device preemptively occupies the COT.

Optionally, the method 400 further comprises:

s412, the second terminal device sends scheduling request information to the network device, the scheduling request information requesting resources for transmission by the second terminal device. Correspondingly, the network device receives the scheduling request information.

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

It may be understood that the second terminal device may schedule resources, that is, allocate resources to the second terminal device and indicate the allocated resources to the second terminal device, and one or more second terminal devices may send scheduling request information to the network device, which is not limited in this application.

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

The transmission timing of the indication information may be as follows:

in a possible embodiment #1, the indication information is received by the first terminal device before a first time, where 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 start time of the last time domain unit (e.g. time slot) in the second resource.

The first processing delay comprises at least a processing delay of the indication information and a processing delay of resource indication information, the resource indication information being used for indicating resources occupied by transmission of a third terminal device, the third terminal device being one of the at least one second terminal device. Or the first processing delay may further include other delays besides the processing delay of the indication information and the processing delay of the resource indication information, which is not limited in this application.

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

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

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

First time = start time of slot # 4-first processing delay.

Since control information is generally transmitted at the start time of each slot according to the protocol, the start time of the last slot (slot # 4) is used as a reference. It is understood that the last timing of transmitting the control information is used as a reference.

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, for example, the processing delay of DCI. The processing delay of the resource indication information comprises 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 the resource indication information before receiving the indication information, and the first terminal device determines that the first terminal device needs to share part of the resources in the first resource to the UE2 after receiving and decoding the indication information, the resource indication information needs to be updated at this time, and the time required for updating the resource indication information is the update delay of the resource indication information. For another example, if the first terminal device does not generate the resource indication information before receiving the indication information, and the first terminal device determines that the partial resource in the first resource needs to be shared to the UE2 after receiving and decoding the indication information, the time required for generating the resource indication information is the generation delay of the resource indication information.

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

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

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

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

It should be noted that, in the possible embodiment #1, if the indication information is received by the first terminal device before the first time, it indicates that the first terminal device is ready to process the indication information before the end of transmission and update or generate the resource indication information, that is, the resource remaining in the COT can be shared with other terminal devices before the end of transmission of the first terminal device, so as to avoid the interruption of the COT.

In a possible embodiment #2, the indication information is received by the first terminal device at a second time determined based on the transmission time of the request information and the second processing delay.

The second processing delay includes at least a processing delay of the request information, for example, a time required for the network device to receive and decode the request information, and a delay of generating the indication information based on the request information, for example, a time after the network device decodes the request information, and generates the indication information based on a content of the request information. Or the second processing delay may further include other delays besides the above delay, which is not limited in this application, or the second processing delay may be predefined or preconfigured, which is not limited in this application.

As shown in fig. 7, the first terminal device transmits request information on slot # 1.

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

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

Illustratively:

second time = transmission time of request information + second processing delay, or

Second time = reception time of the request information + second processing delay.

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

It should be noted that, in the possible embodiment #2, the first terminal device may predict the time of receiving the indication information based on the sending time of the request information, so as to receive the indication information at the predicted time, and avoid blind detection of the first terminal device, so that this embodiment may save power consumption of blind detection or monitoring of the first terminal device.

The following embodiments are presented with respect to the content of the instruction information:

in a possible embodiment #1, the indication information is used to indicate an end position of a time domain unit corresponding to a third resource, where the third resource includes the first resource.

It may be appreciated that the indication information indicates a location of one time domain unit, where the location of the time domain unit is a last time domain unit of a time domain unit corresponding to a third resource (the third resource is a resource that is added on the basis of the second resource and indicated by the network device), and the third resource and the first resource may correspond to one end location, or the third resource and the first resource may not correspond to one end location, as shown in fig. 8, which is not limited in this application.

Illustratively, the indication information includes any one of:

the number information of the time domain units between the end positions of the time domain units corresponding to the second resources and the end positions of the time domain units corresponding to the third resources;

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 (b)

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 embodiment, the network device needs to inform the second terminal device of the allocated resources of the location of the resources allocated thereto in the first resources, the second terminal device of the allocated resources having been made aware of which resources can be transmitted on.

For example, the network device may determine, according to the location of the resource allocated by the network device to the second terminal device, a time domain resource for transmitting DCI to the second terminal device, where the DCI is, for example, DCI 3_0, and DCI 3_0 includes an information domain, and is used by the second terminal device to determine a time interval between PSCCHs/PSSCH, PSFCH, PUCCH, which may be referred to in the related content of Mode 1, and this application is not limited.

Possible embodiment #2, the indication information is used to indicate at least one of the following: and the side-link identification 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, and the frequency domain information of the third resource occupied by the at least one second terminal device.

The indication information indicates an example of time domain information of the second terminal device occupying the third resource:

example #1, the indication information includes a time domain resource allocation TRIV and a side-link identifier of the second terminal device, where TRIV indicates a time domain resource occupied by each second terminal device. The starting position of the TRIV is any one of the following: the method comprises the steps of carrying a time domain unit of indication information, an end position of a time domain unit corresponding to a second resource, a next time domain unit of the end position of the time domain unit corresponding to the second resource, carrying a time domain unit of a scheduling request corresponding to a first terminal device, or carrying a time domain unit of a buffer status report corresponding to the first terminal device.

For example, the indication information indicates that resources are allocated to 2 second terminal apparatuses (ue#2 and ue#3), the indication information including { ue#2id, triv2; ue#3id, triv3}. In the following, different indication manners of TRIV2 are described by taking TRIV2 to indicate the time domain resource of ue#2 as an example, and manners of TRIV3 to indicate the time domain resource of ue#3 are similar, and are not described again.

Mode 1: TRIV2 indicates the position of a slot, and the terminal device may determine the specific position of the slot based on the start position of TRIV and the interval indicated by TRIV 2.

It can be appreciated that in mode 1, the network device occupies one slot for the resources allocated by ue#2.

Mode 2: TRIV2 indicates a position of a time slot, and the terminal device may determine a first time domain resource position and a second time domain resource position according to TRIV2, where the first time domain resource position is the start position of TRIV, and the second time domain resource position may be determined based on an interval indicated by TRIV 2.

It can be appreciated that in mode 2, the resources allocated by the network device for ue#2 occupy a plurality of time slots, i.e., time slots between the first time domain resource location and the second time domain resource location. It will be appreciated that the network device and the first terminal device may pre-define the first time domain resource location without the TRIV2 itself indicating.

Mode 3: TRIV2 indicates that the two-slot position terminal device may determine the third time domain resource location and the fourth time domain resource location according to TRIV 2. Specifically, the terminal device determines the third time domain resource position according to the start position of TRIV and the interval between the third time domain resource position indicated by TRIV2 and the start position, and determines the fourth time domain resource position according to the start position of TRIV and the interval between the fourth time domain resource position indicated by TRIV2 and the start position.

It can be appreciated that in mode 3, the resources allocated by the network device to the ue#2 occupy a plurality of time slots, that is, the time slots in which the third time domain resource location and the fourth time domain resource location are located (i.e., 2 time slots), or all time slots between the third time domain resource location and the fourth time domain resource location.

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

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

Example #3, the indication information indicates the IDs of the second terminal apparatuses and the number of resources each second terminal apparatus occupies in the third resource.

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

The indication information indicates an example of frequency domain information of the second terminal device occupying the third resource:

example #4, the indication information further includes a frequency domain resource allocation, FRIV, indicating a starting position and number of comb teeth (interference), the FRIV being used to determine frequency domain resources occupied by the at least one second terminal device transmission, the number of bits occupied by the FRIV being determined based on the following formula:

Wherein,indicating the number of teeth.

For example, the frequency domain resources on one slot are occupied by a plurality of second terminal devices, each of which occupies one or more comb teeth. The indication information needs to indicate the location of the frequency domain resource occupied by each second terminal device in addition to the location of the time domain resource occupied by the second terminal device.

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

Mode 2: the indication information indicates a starting position of a subchannel (sub-channel) occupied by each second terminal device and the number of occupied subchannels.

In modes 1 and 2, the number of bits occupied by the FRIV can be calculated according to the above formula, for example, 5 combs at 15kHz, 4 or 11 combs at 30kHz, and 6 or 7.

It will be appreciated that the indication information may be a combination of two items of { UE ID, TRIV }, or a combination of three items of { UE ID, TRIV, FRIV }, as the case may be. For example, when the frequency domain resource in one time slot is occupied by 1 second terminal device, the indication information is a combination of two items of { UE ID, TRIV }, and when the frequency domain resource in one time slot is occupied by 2 or more second terminal devices, the indication information is a combination of three items of { UE ID, TRIV, FRIV }.

It is also understood that the possible embodiment #2 and the possible embodiment #1 may be combined, that is, the content indicated by the indication information may be a combination of the content indicated by the indication information in the two embodiments.

In a possible embodiment #3, the indication information is used to indicate, in addition to the end position of the time domain unit corresponding to the third resource: at least one side-link identification of the second terminal device, at least one of: at least one resource required by the second terminal device, and a transmission priority of the 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 the transmission use of the first terminal device, so that the third resource indicated by the network device is more likely to exceed the COT preempted by the first terminal device. If the first terminal equipment determines that the third resource exceeds the COT based on the indication information, the first terminal equipment exceeding the COT resource can be ignored, namely the duration corresponding to the resources allocated by the first terminal equipment to all the second terminal equipment cannot exceed the upper limit of the resources.

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

For example: the upper resource 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 equipment allocates resources for all the second terminal equipment, the first terminal equipment can allocate resources for the second terminal equipment corresponding to the side uplink identifier indicated by the indication information, if the indication information also indicates the resources required by at least one second terminal equipment, the first terminal equipment can allocate corresponding resources according to the number of the resources required by each second terminal equipment, or if the indication information also indicates the transmission priority of at least one second terminal equipment, the first terminal equipment can allocate resources for the second terminal equipment with high transmission priority according to the transmission priority.

Optionally, the method 400 further comprises:

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

information of a terminal device in transmission relation to the first terminal device, reference signal received power (reference signal receiving power, RSRP) information of the first terminal device, reference signal received quality (reference signal received quality, RSRQ) information of the first terminal device, quality of service (quality of service, qoS) information of the first terminal device.

It will be appreciated that the above information may be sent with the request information, or may be sent after the request information, or the above information may be maintained periodically. If the above information is periodically maintained by the network device, the first terminal device does not need to transmit if the above information does not change in the maintenance period, and the first terminal device needs to transmit the above information after the change if the above information changes in the maintenance period.

The network device may determine which second terminal devices to allocate the first resources preferentially based on the information of the terminal devices having a transmission relation with the first terminal device. For example, both ue#2 and ue#3 send scheduling request information to the network device requesting allocation of resources for transmission, the second terminal device having a transmission relation with the first terminal device is ue#2, and the transmission priorities of ue#2 and ue#3 are the same, for example, the transmission priorities may be 0-7, and the transmission priorities of ue#2 and ue#3 are both 5, at which time the network device may preferentially allocate the first resources to ue#2.

The network device preferentially allocates available resources in the COT preempted by the first terminal device with high reference signal receiving power/receiving quality/service quality 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.

For example, the first terminal device #1 sends request information to the network device, requests the network device to allocate resources #a in the preempted COT #1, where the resources #a are resources remaining in the transmission of the first terminal device #1 in the COT #1, the first terminal device #2 sends request information to the network device, requests the network device to allocate resources #b in the preempted COT #2, where the resources #b are resources remaining in the transmission of the first terminal device #2 in the COT #2, and 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 preferentially allocates the resources #a.

For example, the network device acquires QoS when the first terminal device #1 uses the resource transmission in the COT #1, and the network device preferentially allocates the resource #a to the second terminal device corresponding to the service matching the QoS. Or the network device acquires the RSRP when the first terminal device #1 uses the resource in the COT #1 for transmission, and the network device preferentially allocates the resource #a to the second terminal device corresponding to the service matched with the RSRP.

Optionally, the method 400 further comprises:

s430', the first terminal device updates the COT information, which may indicate the number of time-domain units remaining in the COT.

In one possible embodiment, the first terminal device updates the COT information based on the indication information.

For example, if the number of remaining time slots in the COT is n (the number of remaining time slots in the COT is the number of time slots remaining in the current COT, for example, the first terminal device needs to use 6 time slots for transmission and does not share the COT to other terminal devices currently, then the COT includes 6 time slots, if the first terminal device receives the indication information in the 3 rd time slot, then the number of remaining time slots in the COT is 4, and the number of remaining time slots includes the time slot for receiving the indication information); the third resource indicated by the indication information is that 3 time slots are additionally added at the end position of the second resource (i.e. the resource used by the first terminal device for transmission), namely the indication information indicates that 3 time slots after the second resource are shared to other terminal devices, if the indication information is effective after k time slots, the number of remaining time slots indicated by the updated COT information on the effective time slots is n-k+3. The k slots may be understood as the time required to decode the indication information after receiving the indication information, and k may be greater than or equal to 1. The time slots in effect are understood as: after decoding the indication information, the number of time slots remaining in the COT is updated based on the indication information, and the time slot of the number of time slots remaining in the COT is the effective time slot based on the indication information.

For example, as shown in fig. 9, the maximum duration of the COT preempted by the first terminal device is 8 slots, the first terminal device uses 6 slots for transmission, the third resource indicated by the indication information is received in the 3 rd slot (slot # 3) as 2 slots (i.e. slot #7 and slot # 8) added on the basis of the 6 slots, if the indication information is valid in the 4 th slot (slot # 4), the remaining duration in the COT is updated in the slot #4, and the first terminal device indicates the remaining number of slots in the COT to other terminal devices through the control channel in the slot #4 as 5, and the other terminal devices can demodulate the control channel to determine the remaining number of slots in the COT. In slot #5, the first terminal device indicates to the other terminal devices that the number of slots remaining in the COT is 4 through the control channel, and so on. Updating the number of remaining time slots in the COT per time slot may enable other terminal devices to determine the time domain position where the COT ends, thereby saving the perceived power consumption of other terminal devices, and enabling unrelated terminal devices (i.e., second terminal devices not allocated resources) not to perceive on the remaining time slots in the COT.

For example, instead of considering the number of remaining slots in the COT when the first terminal receives the indication information, the number of remaining slots in the COT may be determined by updating the COT information according to the slot when the indication information is valid or by updating the COT information according to the slot of the first terminal. If the number of remaining time slots before updating 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 to other terminal equipment, the updated COT information is the remaining m+p time slots. If the maximum duration of the COT preempted by the first terminal equipment is 8 time slots, the transmission of the first terminal equipment needs to occupy 4 time slots, and the first terminal equipment receives indication information which indicates that 2 time slots in COT resources are shared to the second terminal equipment; before the first terminal equipment analyzes the indication information, the COT information sent by the first terminal equipment is the remaining 4 time slots in the 1 st time slot, and the COT information sent by the first terminal equipment is the remaining 3 time slots in the 2 nd time slot; then the first terminal analyzes the indication information to acquire that COT is prolonged by 2 time slots, the COT information in the 3 rd time slot is the remaining 2 time slots before the COT information is updated, and the first terminal equipment updates the COT information in the 3 rd time slot according to the indication information, wherein the updated COT information is the remaining 2+2 time slots (namely 4 time slots).

Optionally, the method 400 further comprises:

and S430, the first terminal equipment updates or generates the resource indication information.

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

For example, if the first terminal device has generated the resource indication information before receiving the indication information, and the first terminal device determines that the part of the resources in the first resource needs to be shared to the UE2 or the UE3 according to the indication information after receiving the indication information, the resource indication information needs to be updated. For another example, if the first terminal device does not generate the resource indication information before receiving the indication information, and the first terminal device determines that the part of the resources in the first resource need to be shared to other UEs (e.g. UE 2) according to the indication information after receiving the indication information, then the resource indication information needs to be generated.

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

For example, the first terminal device updates or generates the resource indication information based on the number of remaining time slots in the COT, which 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 in transmission, the indication information indicates that the third resource is increased by 3 time slots on the basis of 6 time slots, that is, the third resource indicated by the network device exceeds one time slot of the COT, at this time, the first terminal device determines that the resource allocation of the second terminal device is still 8 time slots occupied by the COT, and the resource allocation on the time slot exceeding the COT is negligible for the first terminal device, that is, the sum of the time slot used by the first terminal device in transmission and the time slot allocated to the second terminal device cannot exceed 8 time slots.

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

For example, the indication information indicates that the first terminal device shares the first resource with the UE2 and the UE3, and the transmission priority of the UE3 is higher than that of the UE2, and if the first terminal device has generated the resource indication information a before receiving the indication information, to indicate that the first resource is shared with the UE2, the first terminal device may update the resource indication information a to indicate that the first resource is shared with the UE3. If the first terminal device does not generate the resource indication information before receiving the indication information, the first terminal device may generate the resource indication information a, to indicate that the resource a in the first resource is shared to the UE2, generate the resource indication information B, to indicate that the resource B in the first resource is shared to the UE3, and the number of resources in the resource B may be greater than the number of resources in the resource a; or the first terminal device generates resource indication information a, indicating that the first resources are all shared to the UE3.

If in S420, the content of the indication information is the possible embodiment #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 of the second terminal devices can use through the resource indication information.

If the content of the indication information is the possible embodiment #2 in S420, the indication information only includes the side uplink identifier of the at least one second terminal device, and the first terminal device may autonomously allocate the resource in the first resource for the at least one second terminal device in the order from the high to the low transmission priority based on the indication information. When the first terminal device autonomously allocates the first resource, the transmission priority of the second terminal device may be considered, and the duration to be transmitted of the second terminal device may also be considered.

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

For example, 3 slots are left in the COT except for the transmission duration of the first terminal device, the indication information indicates that ue#2 occupies 3 slots, the transmission priority of ue#2 is lower, ue#3 occupies 2 slots, and the priority of ue#3 is higher. At this time, the first terminal device may allocate 2 slots to ue#3, 1 slot to ue#2, or # allocate 2 slots to ue#3 without allocating resources to ue#2.

It should be noted that S430 'and S430 may be performed simultaneously or may not be performed simultaneously, and the sequence of S430' and S430 is not limited in this application.

Optionally, the method 400 further comprises:

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 of the third terminal device, and the first resource comprises the fourth resource.

The resource instruction information transmitted in S440 is the resource instruction information updated or generated in S430. The third terminal device is one of the at least one second terminal device, which is shown in fig. 4 as one of the third terminal devices.

Illustratively, the first terminal device determines to allocate the first resource to ue#2 and ue#3, the first terminal device transmits resource indication information #1 to ue#2, the resource indication information #1 indicating resource #1, the resource #1 being used for transmission of ue#2. The first terminal apparatus transmits resource indication information #2 to UE #3, the resource indication information #2 indicating resource #2, the resource #2 being used for transmission of UE #3, and the resource #1 and the resource #2 being included in the first resource. The transmission of ue#2 may be a transmission between ue#2 and the first terminal device, or may be a transmission between ue#2 and other terminal devices, and the transmission of ue#3 is similar, which is not limited in this application.

It should be noted that S440 and S430 may be performed simultaneously or may not be performed simultaneously, and the sequence of S440 and S430 is not limited in this application.

Optionally, the method 400 further comprises:

s441, the first terminal device sends first feedback information to the network device, where the first feedback information is used to feedback 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.

The first feedback information is carried in PUCCH, for example.

Optionally, if the indication information is received by the first terminal device after the first time, the first terminal device does not update or generate the resource indication information based on the indication information, and the 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 feed back that the first terminal device does not update or generate the resource indication information. Correspondingly, the network device receives the second feedback information.

For example, when the first terminal device receives the indication information later than the first time instant, the indication information is processed or updated or generated, and the resource indication information is updated or generated, the first terminal device may understand that the updated or generated resource indication information is sent to the third terminal device before the end of the COT, 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 already close to the end, and the third terminal device cannot transmit on the resource indicated by the resource indication information.

The second feedback information is illustratively carried on the PUCCH.

Optionally, the method 400 further comprises:

and S450, the network equipment sends resource indication information to the third terminal equipment, wherein the resource indication information indicates fourth resources, the fourth resources are used for transmission of the third terminal equipment, and the first resources comprise fourth resources.

Similar to S440, a detailed description is omitted here.

Alternatively, 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 indicates that the second terminal device has successfully transmitted using the fourth resource.

It is understood that S440 and S450 may be selected, i.e., method 400 includes S440 or S450. Or the method 400 includes S440 and S450, which is not limited in this application.

It should be appreciated that fig. 10 illustrates an example of a timing between steps of the method 400, and that other timings (e.g., the UE2 may transmit the third feedback information (PUCCH illustrated in fig. 10) through the PUCCH before S441 or S442, or S450 may precede S430, etc.) are other than this, which is not a limitation of the present application.

In fig. 10, a first terminal device is illustrated as UE1, a second terminal device is illustrated as UE2, a network device is illustrated as gNB, a COT preempted by UE1 is illustrated as 6 slots, interactions between gNB and UE1, gNB and UE2 use resources in an licensed spectrum, resources in an unlicensed spectrum are used for slots #1- #6, slots #1- #4 are used for UE1 transmission, and slots #5 and #6 are used for UE2 transmission.

In addition, S420 may not depend on S410, i.e. the network device may first send the indication information to the first terminal device, which then preempts the COT, which is described below with reference to fig. 11.

By the method 400, after the first terminal device preempts the COT, the first terminal device requests the network device to allocate the first terminal device transmission remaining resources (i.e., the first resources) in the COT. Therefore, the first terminal equipment can share the first resource to other terminal equipment based on the indication information sent by the network equipment, so that the throughput and the spectrum utilization rate of the system can be improved. And the resources in the unlicensed spectrum scheduled to the second terminal equipment by the network equipment are preempted by the first terminal equipment, so that the situation that the resources scheduled by the network equipment are not preempted by the first terminal equipment, so that the resource waste of the indication information is caused can be avoided, and the scheme can also improve the success rate of the access of the second terminal equipment on the shared resources.

Fig. 11 is an interaction flow chart of another communication method provided in an embodiment of the present application. The method 1100 illustrated in fig. 11 includes the steps of:

s1110, the network device sends, to the first terminal device, indication information, where the indication information is used to indicate resources occupied by the second terminal device for transmission, where the resources are included in a channel opportunity time COT to be preempted by the first terminal device, and the resources include time domain resources and/or frequency domain resources. And the corresponding first terminal equipment receives the indication information.

In a possible implementation manner, the indication information includes TRIV, and how the TRIV indicates the time domain resource occupied by the second terminal device specifically may be described with reference to the related content in S420, which is not described herein.

In a possible implementation manner, the indication information includes a FRIV, and how the FRIV indicates the frequency domain resource occupied by the second terminal device specifically may be described with reference to the related content in S420, which is not described herein.

Optionally, the method 1100 further comprises:

s1120, the first terminal equipment preempts the COT.

In one possible implementation manner, after receiving the indication information, the first terminal device preemptively uses the COT in a Type 1 mode, uses the second resources in the COT to transmit, and allocates the first resources to at least one second terminal device based on the indication information.

The method for allocating the first resource to the at least one second terminal device by the first terminal device may refer to descriptions of related contents in the method 400, where the first resource and the second resource are the same as the first resource and the second resource in the method 400, and are not described herein.

Optionally, the method 1100 further includes other steps, for example, the method 1100 further includes steps similar to S412, S430', S440, S441, S442, S450, and when the steps are included, how the terminal device (e.g., the first terminal device or the second terminal device) and the network device perform the steps may refer to relevant content in the method 400, which is not repeated.

Based on the method 1100, the network device may allocate resources in the unlicensed spectrum to the second terminal device, and the first terminal device may share the remaining resources of its own transmission to the second terminal device based on the indication information sent by the network device, so as to improve throughput and spectrum utilization of the system.

In the embodiment of the present application, the transmission of the device a may be understood as the transmission of the device a, or may be understood as the reception of the device a, which is not limited in this application.

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

In this application, "indicated" may be indicated explicitly and/or implicitly. For example, the implicit indication may be based on a location and/or a resource used for the transmission; the explicit indication may be based on one or more parameters, and/or one or more indices, and/or one or more bit patterns it represents.

It will be appreciated that some optional features of the various embodiments of the application may not be dependent on or combined with other features in some circumstances, and are not limited.

The solutions in the embodiments of the present application may be reasonably used in combination, and the explanation or explanation of each term appearing in the embodiments may be referred to or explained with each other in each embodiment, which is not limited thereto.

It will be further appreciated that in the various method embodiments described above, the methods and operations performed by the terminal device (e.g., the first terminal device, the second terminal device) or the network device may also be performed by component parts of the terminal device or the network device (e.g., a chip, a system-on-a-chip, a processor, or a circuit).

It should be understood that the term "and/or" in this application is merely an association relationship describing the associated object, and indicates that three relationships may exist, for example, a and/or B may indicate: there are three cases, a alone, a and B together, and B alone, wherein a, B may be singular or plural. In addition, the character "/" herein generally indicates that the associated object is an "or" relationship, but may also indicate an "and/or" relationship, and may be understood by referring to the context.

In the present application, "at least one item" means one item or a plurality of items, and "at least two items" and "a plurality of items" mean two items or more than two items. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b, or c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or plural.

Method embodiments of the present application are described above with reference to the accompanying drawings, and device embodiments of the present application are described below. It will be appreciated that the description of the method embodiments and the description of the apparatus embodiments may correspond to each other and that accordingly, non-described parts may be referred to the previous method embodiments.

The above description has been presented mainly from the point of interaction between the network elements. It will be appreciated that each network element, e.g. the transmitting device or the receiving device, in order to implement the above-mentioned functions, comprises corresponding hardware structures and/or software modules for performing each function. Those of skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The embodiment of the application may divide the function modules of the transmitting end device or the receiving end device according to the above method example, for example, each function module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated modules may be implemented in hardware or in software functional modules. It should be noted that, in the embodiment of the present application, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation. The following description will take an example of dividing each functional module into corresponding functions.

Fig. 12 is a schematic block diagram of a communication device provided in an embodiment of the present application. The apparatus 1200 includes a transceiver unit 1210. The transceiving unit 1210 may be used to implement a corresponding communication function. The transceiving unit 1210 may also be referred to as a communication interface or a communication unit.

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

Optionally, the apparatus 1200 further includes a storage unit, where the storage unit may be configured to store instructions and/or data, and the processing unit 1220 may read the instructions and/or data in the storage unit, so that the apparatus implements the actions of the communication device in the foregoing method embodiments.

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

The apparatus 1200 may implement steps or processes corresponding to those performed by the first terminal device in the method embodiment according to the embodiment of the present application, and the apparatus 1200 may include a unit for performing the method performed by the first terminal device in the embodiment shown in fig. 4.

In another design, the apparatus 1200 may be a network device in the foregoing embodiment, or may be a component (such as a chip) of a network device. The apparatus 1200 may implement steps or processes performed by the network device in the above method embodiment, where the transceiver unit 1210 may be configured to perform operations related to the transceiver of the network device in the above method embodiment, and the processing unit 1220 may be configured to perform operations related to the processing of the network device in the above method embodiment.

The apparatus 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 apparatus 1200 may include a unit for performing the method performed by the network device in the embodiment shown in fig. 4.

Fig. 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, the processor 13120 being coupled to a memory 1320, the memory 1320 being for storing computer programs or instructions and/or data, the processor 13120 being for executing the computer programs or instructions stored by the memory 1320 or for reading data stored by the memory 1320 to perform the methods in the method embodiments above.

In some embodiments, the processor 13120 is one or more.

In some embodiments, memory 1320 is one or more.

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

In some embodiments, as shown in fig. 13, the apparatus 1300 further comprises a transceiver 1330, the transceiver 1330 for receiving and/or transmitting signals. For example, the processor 13120 is configured to control the transceiver 1330 to receive and/or transmit signals.

As an option, the apparatus 1300 is configured to implement the operations performed by a device (e.g., a first terminal device, and also e.g., a network device) in the above method embodiments.

It should be appreciated that the processors referred to in the embodiments of the present application may be central processing units (central processing unit, CPU), but may also be other general purpose processors, digital signal processors (digital signal processor, DSP), application specific integrated circuits (application specific integrated circuit, ASIC), off-the-shelf programmable gate arrays (field programmable gate array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It should also be understood that the memories mentioned in the embodiments of the present application may be volatile memories and/or nonvolatile memories. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM). For example, RAM may be used as an external cache. By way of example, and not limitation, RAM includes the following forms: static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and direct memory bus 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, discrete hardware components, the memory (storage module) may be integrated into the processor.

It should also be noted that the memory described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

The embodiments of the present application also provide a computer readable storage medium having stored thereon computer instructions for implementing the method performed by the device (e.g., the first terminal device, and also e.g., the network device) in the above method embodiments.

Embodiments of the present application also provide a computer program product containing instructions that, when executed by a computer, implement a method performed by a device (e.g., a first terminal device, and also e.g., a network device) in the above method embodiments.

The explanation and beneficial effects of the related content in any of the above-mentioned devices can refer to the corresponding method embodiments provided above, and are not repeated here.

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

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, 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 loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. For example, the computer may be a personal computer, a server, or a network device, etc. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, for example, by wired (e.g., coaxial cable, optical fiber, digital Subscriber Line (DSL)), or wireless (e.g., infrared, wireless, microwave, etc.). 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 an integration of one or more available media. For example, the aforementioned usable media include, but are not limited to, U disk, removable hard disk, read-only memory (ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other various media that can store program code.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of communication, comprising:

the first terminal equipment preempts the channel opportunity time COT;

the first terminal equipment sends request information to network equipment, wherein the request information is used for requesting the network equipment to send indication information, and the indication information is used for determining that first resources in the COT are allocated to at least one second terminal equipment;

the first terminal device receives the indication information from the network device.

2. The method of claim 1, wherein the request information is carried on a scheduling request resource, the scheduling request resource corresponding to a first channel access priority, the first channel access priority being greater than or equal to a channel access priority of the COT,

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

And the channel access priority corresponding to the service of the at least one second terminal equipment allocated with the resources is greater than or equal to the channel access priority of the COT.

3. 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 comprises:

the first terminal device sends first information to the network device, wherein the first information is used for indicating at least one of the following:

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

a side uplink identification of the first terminal device;

the transmission priority of the first terminal equipment; or (b)

And the channel access priority of the COT.

4. A method according to any one of claims 1 to 3, wherein the indication information is received by the first terminal device before a first time instant, the first time instant being determined based on an end position of a time domain unit corresponding to a second resource within the COT and a first processing delay.

5. The method of claim 4, the first processing delay comprising a processing delay of the indication information and a processing delay of resource indication information, the resource indication information being used to indicate resources occupied by a third terminal device transmission, the third terminal device being one of the at least one second terminal device.

6. A 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 instant, which is determined based on the transmission time instant of the request information and a second processing delay.

7. The method according to any one of claims 1 to 6, wherein the indication information is used to indicate an end position of a time domain unit corresponding to a third resource, the third resource comprising the first resource.

8. The method of claim 7, wherein the indication information comprises any one of:

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;

And carrying 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.

9. The method according to any of claims 1 to 8, characterized in that before the first terminal device receives the indication information from the network device, the method further comprises:

information of a terminal device having a transmission relation with the first terminal device, reference signal receiving power information of the first terminal device, reference signal receiving quality information of the first terminal device, and service quality information of the first terminal device.

10. The method according to any one of claims 1 to 9, wherein the indication information is further used to indicate at least one of:

a side uplink identification of the at least one second terminal device;

the at least one second terminal device occupies time domain information of a third resource;

and the at least one second terminal device occupies the frequency domain information of the third resource.

11. The method according to any of claims 1 to 10, wherein the indication information comprises a time domain resource allocation TRIV, the TRIV indicating time domain resources occupied by the at least one second terminal device, the starting position of the TRIV being any of:

a time domain unit for carrying the indication information;

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

a time domain unit for bearing a scheduling request corresponding to the first terminal equipment; or (b)

And carrying a time domain unit of the buffer status report corresponding to the first terminal equipment.

12. The method according to any of claims 1 to 11, wherein the indication information comprises a TRIV for indicating a first time domain resource location and a second time domain resource location, the time domain resource between the first time domain resource location and the second time domain resource location being a time domain resource occupied by a third terminal device transmission, the third terminal device being one of the at least one second terminal device.

13. The method of any of claims 1-12, wherein the indication information further comprises a frequency domain resource allocation, FRIV, the FRIV indicating a starting position and a number of comb teeth, the FRIV being used to determine frequency domain resources occupied by the at least one second terminal device transmission, the number of bits occupied by the FRIV being determined based on the following formula:

wherein,indicating the number of teeth.

14. The method according to any one of claims 1 to 13, further comprising:

The first terminal equipment 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, the fourth resource is used for transmission of the third terminal device, and the first resource includes the fourth resource.

15. The method of claim 14, wherein the first terminal device generates or updates resource indication information based on the indication information, comprising:

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

the upper limit of the number of the time domain units corresponding to the COT; or (b)

And the transmission priority of the at least one second terminal device.

16. The method according to any of claims 1 to 15, wherein the first terminal device allocates resources of the first resources to the at least one second terminal device in order of transmission priority from high to low based on the indication information.

17. The method according to any one of claims 14 to 16, further comprising:

The first terminal equipment sends first feedback information to the network equipment, wherein the first feedback information is used for feeding back that the first terminal equipment has sent the resource indication information.

18. A method according to any one of claims 1 to 3, wherein if the indication information is received by the first terminal device after a first time instant, the first terminal device does not update or generate resource indication information based on the indication information, the first time instant being determined based on an end position of a time domain unit corresponding to a second resource within the COT and a first processing delay, the method further comprising:

and the first terminal equipment sends second feedback information to the network equipment, wherein the second feedback information is used for feeding back that the first terminal equipment does not update or generates resource indication information.

19. The method according to any of claims 1 to 18, wherein the first terminal device sends the request information to the network device when a transmission time period of the first terminal device is greater than or equal to a threshold value.

20. A method of communication, comprising:

the network equipment receives request information from first terminal equipment, wherein the request information is used for requesting the network equipment to send indication information, and the indication information is used for determining that first resources in channel opportunity time COT preempted by the first terminal equipment are allocated to at least one second terminal equipment;

And the network equipment sends the indication information to the first terminal equipment.

21. The method of claim 20, wherein the request information is carried on a scheduling request resource, the scheduling request resource corresponding to a first channel access priority, the first channel access priority being greater than or equal to a channel access priority of the COT,

22. 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 comprises:

the network device receives first information from the first terminal device, the first information being used to indicate at least one of:

A side uplink identification of the first terminal device;

the transmission priority of the first terminal equipment; or (b)

And the channel access priority of the COT.

23. The method according to any of the claims 20 to 22, wherein the indication information is received by the first terminal device before a first time instant, the first time instant being determined based on an end position of a time domain unit corresponding to a second resource within the COT and a first processing delay.

24. The method of claim 23, wherein the first processing delay comprises a processing delay of the indication information and a processing delay of resource indication information, the resource indication information being used to indicate resources occupied by a third terminal device transmission, the third terminal device being one of the at least one second terminal device.

25. The method according to any of claims 20 to 22, wherein the indication information is received by the first terminal device at a second time instant, the second time instant being determined based on the transmission time of the request information and a second processing delay.

26. 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, the third resource comprising the first resource.

27. The method of claim 26, wherein the indication information comprises any one of:

28. The method according to any of claims 20 to 27, wherein before the network device sends the indication information to the first terminal device, the method further comprises:

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

29. The method according to any one of claims 20 to 28, wherein the indication information is further used to indicate at least one of:

A side uplink identification of the at least one second terminal device;

30. The method according to any of the claims 20 to 29, wherein the indication information comprises a time domain resource allocation TRIV, the TRIV indicating time domain resources occupied by the at least one second terminal device, the starting position of the TRIV being any of:

a time domain unit for carrying the indication information;

31. The method according to any of the claims 20 to 30, wherein the indication information comprises a TRIV for indicating a first time domain resource location and a second time domain resource location, the time domain resource between the first time domain resource location and the second time domain resource location being a time domain resource occupied by a third terminal device transmission, the third terminal device being one of the at least one second terminal device.

32. The method of any of claims 20-31, wherein the indication information further comprises a frequency domain resource allocation, FRIV, the FRIV indicating a starting position and a number of comb teeth, the FRIV being used to determine frequency domain resources occupied by the at least one second terminal device transmission, the number of bits occupied by the FRIV being determined based on the following equation:

wherein,indicating the number of teeth.

33. The method according to any one of claims 20 to 32, further comprising:

the network device sends resource indication information to a third terminal device, the resource indication information indicating a fourth resource, the fourth resource being used for transmission by the third terminal device, the third terminal device being one of the at least one second terminal device, the first resource comprising the fourth resource.

34. The method according to any one of claims 20 to 33, further comprising:

the network device receives scheduling request information from a second terminal device, the scheduling request information requesting resources for transmission.

35. A communication device, characterized in that the device comprises means for performing the steps of the method according to any of claims 1 to 19 or the device comprises means for performing the steps of the method according to any of claims 20 to 34.

36. A communications device, the device comprising a processor coupled to a memory, the memory storing instructions that, when executed by the processor, cause the communications device to perform the method of any one of claims 1 to 19 or to perform the method of any one of claims 20 to 34.

37. A communication device comprising logic circuitry to couple with an input/output interface through which data is transmitted to perform the method of any one of claims 1 to 19 or to perform the method of any one of claims 20 to 34.

38. A computer readable storage medium for storing a computer program which, when run on a computer, causes the computer to perform the method of any one of claims 1 to 19 or to perform the method of any one of claims 20 to 34.

39. A computer program product, the computer program product comprising: computer program code which, when executed, implements the method of any of claims 1 to 19 or performs the method of any of claims 20 to 34.