CN115988561A

CN115988561A - Communication method and device

Info

Publication number: CN115988561A
Application number: CN202111196242.9A
Authority: CN
Inventors: 许胜锋
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-10-14
Filing date: 2021-10-14
Publication date: 2023-04-18
Also published as: WO2023061152A1

Abstract

A communication method and device are used for reasonably determining a frequency spectrum mode of transmitting service data between a transmitting end and a receiving end. In the present application, the method comprises: the method comprises the steps that a first terminal device obtains service information of a first service; the first terminal device transmits service data of the first service in a first spectrum mode according to the service information of the first service, the service data of the first service is carried on a side link between the first terminal device and the second terminal device, and the first spectrum mode is an authorized spectrum mode, an unauthorized spectrum mode or an authorized spectrum and unauthorized spectrum mode.

Description

Communication method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communication method and apparatus.

Background

With the rapid development of mobile communication, the widespread use of new service types, such as video chat, virtual Reality (VR)/Augmented Reality (AR), and other data services, increases the bandwidth demand of users. Device-to-device (D2D) communication allows direct communication between terminal devices, and may share spectrum resources with cell users under the control of a cell network, effectively improving the utilization of spectrum resources. The D2D communication includes one-to-many communication (one to one communication) and one-to-one communication (one to one communication). One-to-many communication corresponds to multicast and broadcast communication, and one-to-one communication corresponds to unicast communication. In the one-to-one communication, if the distance between two terminal devices is smaller than a preset distance, the two terminal devices can establish a proximity service communication 5 (pc5) connection after discovering each other, and perform direct communication through the PC5 interface.

The two terminal devices can be respectively a sending end and a receiving end of the service data, and the sending end and the receiving end can mutually transmit the service data in an authorized spectrum mode, specifically, the authorized spectrum mode corresponds to the authorized spectrum, the sending end can determine authorized spectrum resources from the authorized spectrum, and then send the service data to the receiving end on the determined authorized spectrum resources. Due to the limited authorized spectrum, a realization mode that a sending end and a receiving end mutually transmit service data in an unauthorized spectrum mode is introduced at present.

Therefore, the spectrum mode for transmitting the service data between the sending end and the receiving end can be a licensed spectrum mode or an unlicensed spectrum mode, and how to reasonably determine the spectrum mode becomes a technical problem to be solved urgently.

Disclosure of Invention

The application provides a communication method and a communication device, which are used for reasonably determining a frequency spectrum mode of transmitting service data between a sending end and a receiving end.

In a first aspect, the present application provides a communication method, which may be performed by a first terminal device or a module (e.g., a chip) in the first terminal device, where the first terminal device may be a sending end of service data. The first terminal device performs the communication method as an example.

In one possible implementation, a method includes: the method comprises the steps that a first terminal device obtains service information of a first service; the first terminal device transmits service data of the first service in a first spectrum mode according to the service information of the first service, the service data of the first service is carried on a side link between the first terminal device and the second terminal device, and the first spectrum mode is an authorized spectrum mode, an unauthorized spectrum mode or an authorized spectrum and unauthorized spectrum mode.

In the above technical solution, the first terminal device may transmit the service data of the first service in the first spectrum manner and the second terminal device according to the service information of the first service, so that the service data may be transmitted between the first terminal device and the second terminal device in a spectrum manner more suitable for service characteristics, which is beneficial to better meeting service requirements and reasonably utilizing the authorized spectrum and the unauthorized spectrum.

In one possible implementation, the service information includes at least one of: a quality of service (QoS) parameter for the PC5, a service type, or a service identification.

In one possible implementation, the PC5QoS parameters of the first service include one or more of a PQI (collectively referred to as PC 5QI, where 5QI is a 5G QoS indicator) and a bit rate; the service type of the first service may include one or more of the following: video, voice, critical traffic.

In one possible implementation, the method further includes: and the first terminal equipment determines a first spectrum mode according to the service information. In the above technical solution, the first terminal device may determine the first spectrum mode corresponding to the service information of the first service after acquiring the service information of the first service, so that when the service data of the first service needs to be transmitted with the second terminal device, the service data is transmitted in the first spectrum mode.

In a possible implementation manner, the determining, by the first terminal device, the first spectrum mode according to the service information includes: and the first terminal equipment determines the first frequency spectrum mode according to the corresponding relation between the service information and the first frequency spectrum mode and the service information. In the above technical solution, the first terminal device includes a corresponding relationship between the service information of the first service and the first spectrum mode, and the first terminal device may determine the first spectrum mode according to the service information of the first service and the corresponding relationship.

In a possible implementation manner, the determining, by the first terminal device, the first spectrum manner according to the corresponding relationship between the service information and the first spectrum manner and the service information includes: the adjacent service layer of the first terminal equipment determines a first spectrum mode according to the corresponding relation between the service information and the first spectrum mode and the service information; or the access layer of the first terminal device determines the first spectrum mode according to the corresponding relation between the service information and the first spectrum mode and the service information. In the above technical solution, the first spectrum mode may be determined based on different functions of the adjacent service layer and the access layer in the first terminal device.

In a possible implementation manner, the determining, by the first terminal device, the first spectrum mode according to the service information includes: the first terminal equipment determines a second frequency spectrum mode according to the corresponding relation between the service information and the second frequency spectrum mode and the service information; the first terminal equipment determines a first spectrum mode according to the second spectrum mode and the first information; the second spectrum mode is a priority authorized spectrum mode or a priority unauthorized spectrum mode; the first information includes at least one of: a usage status of a licensed spectrum resource, a usage status of an unlicensed spectrum resource, a proposed spectrum mode, or a licensed spectrum mode.

In the above technical solution, the service information of the first service may further correspond to a second spectrum mode, where the second spectrum mode is a preferred authorized spectrum mode or a preferred unauthorized spectrum mode; the first terminal device may further determine the first spectrum mode by combining one or more of a usage state of the licensed spectrum resource, a usage state of the unlicensed spectrum resource, a proposed spectrum mode, or a licensed spectrum mode. In the method, the first terminal device can determine the first spectrum mode more flexibly and reasonably according to the spectrum mode suggested or authorized by the network side and the use state of the actual spectrum resource.

In one possible implementation, the method further includes: the first terminal device obtains one or more of the usage state of the authorized spectrum resource and the usage state of the unauthorized spectrum resource. In the above technical solution, the first terminal device may flexibly and reasonably determine the first spectrum mode according to one or more of the usage state of the authorized spectrum resource, the usage state of the unauthorized spectrum resource, and the second spectrum mode.

In one possible implementation, the method further includes: the first terminal device receives the first information. In the above technical solution, the first terminal device may obtain the first information from a network device (e.g., a radio access network device or a core network device), so that the first terminal device may flexibly and reasonably determine the first spectrum mode according to the first information and the second spectrum mode.

In a possible implementation manner, the first terminal device determines the second spectrum manner according to the corresponding relationship between the service information and the second spectrum manner and the service information; the first terminal device determines the first spectrum mode according to the second spectrum mode and the first information, and the method comprises the following steps: the adjacent service layer of the first terminal device determines a second spectrum mode according to the corresponding relation between the service information and the second spectrum mode and the service information; the access layer of the first terminal equipment determines a first spectrum mode according to the second spectrum mode and the first information; or, the adjacent service layer of the first terminal device determines the second spectrum mode according to the corresponding relation between the service information and the second spectrum mode and the service information; the adjacent service layer of the first terminal equipment determines a first spectrum mode according to the second spectrum mode and the first information; or, the access layer of the first terminal device determines the second spectrum mode according to the corresponding relationship between the service information and the second spectrum mode and the service information; and the access layer of the first terminal equipment determines the first spectrum mode according to the second spectrum mode and the first information. In the above technical solution, based on different functions of the adjacent service layer and the access layer in the first terminal device, the adjacent service layer or the access layer may determine the second spectrum mode first, and then determine the first spectrum mode according to the second spectrum mode and the first information; or, the neighboring service layer may determine the second spectrum mode first, and then the access layer determines the first spectrum mode according to the second spectrum mode and the first information.

In one possible implementation, the method further includes: and the first terminal equipment sends second information to the second terminal equipment, wherein the second information is used for indicating the first terminal equipment to transmit the service data of the first service in a first frequency spectrum mode. In the above technical solution, the first terminal device may indicate the first spectrum mode to the second terminal device, so that the first terminal device and the second terminal device may transmit the service data of the first service on the spectrum resource corresponding to the first spectrum mode, that is, the second terminal device only needs to receive the service data of the first service on the spectrum resource corresponding to the first spectrum mode, which is beneficial to reducing energy consumption of the second terminal device.

In a possible implementation manner, the first terminal device sends second information and a service identifier of the first service to the second terminal device, where the second information includes an identifier of the first spectrum mode. In a possible implementation manner, the second information includes an identifier of the first spectrum manner and a service identifier of the first service. In the above technical solution, the first terminal device may indicate the first spectrum mode and the first service to the second terminal device, so that the first terminal device and the second terminal device may transmit service data of the first service on a spectrum resource corresponding to the first spectrum mode.

In a possible implementation manner, in the case that the first spectrum mode is an unlicensed spectrum mode, or a licensed spectrum mode and an unlicensed spectrum mode, the method further includes: the method comprises the steps that a first terminal device determines a first unlicensed spectrum resource from unlicensed spectrum resources, and the first unlicensed spectrum resource is used for transmitting service data of a first service between the first terminal device and a second terminal device; the first terminal device sends the information of the first unlicensed spectrum resource to the second terminal device. In the above technical solution, the first terminal device may determine the first unlicensed spectrum resource from the unlicensed spectrum, and then the first terminal device sends information of the first unlicensed spectrum resource to the second terminal device, so that the second terminal device does not need to detect or receive service data from the first terminal device on all the unlicensed spectrum resources, which is beneficial to further reducing energy consumption of the second terminal device.

In one possible implementation, the traffic data of the first traffic is carried on a first QoS flow (QoS flow) in the sidelink. In the above technical solution, the sidelink between the first terminal device and the second terminal device includes multiple QoS flows, where the multiple QoS flows may carry service data corresponding to different service information, and the different QoS flows may correspond to different spectrum manners, thereby facilitating improvement of flexibility of service data transmission.

In one possible implementation, the method further comprises: and the first terminal equipment associates the first service to the first QoS flow according to the first frequency spectrum mode and the frequency spectrum mode corresponding to the first QoS flow. In one possible implementation, the method further comprises: and the first terminal equipment generates a first QoS flow according to the first spectrum mode. In the above technical solution, the first terminal device may associate the first service with the first QoS flow, so that when the first terminal device sends the service data of the first service to the second terminal device, the service data of the first service may be borne in the first QoS flow.

In a possible implementation manner, the first terminal device sends second information and an identifier of the first QoS flow to the second terminal device, where the second information includes the identifier of the first spectrum mode. In a possible implementation manner, the second information includes an identifier of the first spectrum manner and an identifier of the first QoS flow. In the above technical solution, the first terminal device may indicate the first spectrum manner and the first QoS flow to the second terminal device, so that the first terminal device and the second terminal device may transmit the first QoS flow on the spectrum resource corresponding to the first spectrum manner, where the first QoS flow carries service data of the first service.

In a second aspect, the present application provides a communication method, which may be performed by a first terminal device or a module (e.g., a chip) in the first terminal device, where the first terminal device may be a sending end of service data. The first terminal device performs the communication method as an example.

In one possible implementation, a method includes: the method comprises the steps that a first terminal device obtains a frequency spectrum mode signed by the first terminal device; the first terminal device transmits service data of a first service in a first spectrum mode according to a spectrum mode subscribed by the first terminal device, the service data of the first service is carried on a side link between the first terminal device and a second terminal device, and the first spectrum mode is an authorized spectrum mode or an unauthorized spectrum mode or an authorized spectrum mode and an unauthorized spectrum mode.

In the above technical solution, the first terminal device may transmit the service data of the first service in the first spectrum manner according to the spectrum manner subscribed by the first terminal device, so that the service data may be transmitted between the first terminal device and the second terminal device in the spectrum manner more suitable for the characteristics of the first terminal device, which is beneficial to better transmitting the service data and reasonably utilizing the authorized spectrum and the unauthorized spectrum.

In a possible implementation manner, the spectrum manner subscribed by the first terminal device includes at least one of the following: a licensed spectrum mode, an unlicensed spectrum mode, a licensed spectrum and unlicensed spectrum mode, a preferentially licensed spectrum mode, or a preferentially unlicensed spectrum mode.

In one possible implementation, the method further includes: the first terminal equipment determines a first spectrum mode according to the spectrum mode signed by the first terminal equipment. In the above technical solution, the first terminal device may determine the first spectrum mode, so that when the service data of the first service needs to be transmitted with the second terminal device, the transmission is performed in the first spectrum mode.

In a possible implementation manner, the determining, by the first terminal device, the first spectrum mode according to the spectrum mode subscribed by the first terminal device includes: the first terminal device determines a first spectrum mode according to the area information corresponding to the spectrum mode signed by the first terminal device and the first area information, wherein the first area information is used for representing the area where the first terminal device is located.

In the technical scheme, the first terminal equipment can determine the first frequency spectrum mode according to the area information corresponding to the frequency spectrum mode signed by the first terminal equipment and the area where the first terminal equipment is located, and the first frequency spectrum mode can be better and flexibly suitable for the terminal equipment in different areas.

In a possible implementation manner, determining, by the first terminal device, the first spectrum mode according to the area information corresponding to the spectrum mode subscribed by the first terminal device and the first area information includes: the method comprises the steps that an adjacent service layer of a first terminal device determines a first spectrum mode according to area information corresponding to a spectrum mode signed by the first terminal device and the first area information; or the access layer of the first terminal device determines the first spectrum mode according to the area information corresponding to the spectrum mode subscribed by the first terminal device and the first area information. In the above technical solution, the first spectrum mode may be determined based on different functions of the adjacent service layer and the access layer in the first terminal device.

In a possible implementation manner, the determining, by the first terminal device, the first spectrum manner according to the spectrum manner subscribed by the first terminal device includes: the first terminal equipment determines a second frequency spectrum mode according to the frequency spectrum mode signed by the first terminal equipment; the first terminal equipment determines a first spectrum mode according to the first information and the second spectrum mode; the second spectrum mode is a priority authorized spectrum mode or a priority unauthorized spectrum mode; the first information includes at least one of: a usage state of a licensed spectrum resource, a usage state of an unlicensed spectrum resource, a proposed spectrum mode, or a licensed spectrum mode.

In the above technical solution, the first terminal device may determine the first spectrum mode according to one or more of the usage state of the authorized spectrum resource, the usage state of the unlicensed spectrum resource, the proposed spectrum mode, or the authorized spectrum mode, and the second spectrum mode. In the method, the first terminal device can determine the first spectrum mode more flexibly and reasonably according to the spectrum mode suggested or authorized by the network side and the use state of the actual spectrum resource.

In one possible implementation, the method further comprises: the first terminal device acquires one or more of the usage state of the authorized spectrum resource and the usage state of the unauthorized spectrum resource. In the above technical solution, the first terminal device may flexibly and reasonably determine the first spectrum mode according to one or more of the usage state of the authorized spectrum resource, the usage state of the unauthorized spectrum resource, and the second spectrum mode.

In one possible implementation, the method further comprises: the first terminal device receives the first information. In the above technical solution, the first terminal device may obtain the first information from a network device (such as a radio access network device or a core network device), so that the first terminal device may flexibly and reasonably determine the first spectrum mode according to the first information and the second spectrum mode.

In a possible implementation manner, the first terminal device determines a second spectrum mode according to a spectrum mode signed by the first terminal device; the first terminal equipment determines a first spectrum mode according to the first information and the second spectrum mode, and the method comprises the following steps: the adjacent service layer of the first terminal equipment determines a second frequency spectrum mode according to the frequency spectrum mode signed by the first terminal equipment; the access layer of the first terminal equipment determines a first spectrum mode according to the second spectrum mode and the first information; or, the adjacent service layer of the first terminal device determines a second spectrum mode according to the spectrum mode signed by the first terminal device; the adjacent service layer of the first terminal equipment determines a first spectrum mode according to the second spectrum mode and the first information; or the access layer of the first terminal equipment determines a second spectrum mode according to the spectrum mode signed by the first terminal equipment; and the access layer of the first terminal equipment determines the first spectrum mode according to the second spectrum mode and the first information. In the above technical solution, based on different functions of the adjacent service layer and the access layer in the first terminal device, the adjacent service layer or the access layer may determine the second spectrum mode first, and then determine the first spectrum mode according to the second spectrum mode and the first information; or, the neighboring service layer may determine the second spectrum mode first, and then the access layer determines the first spectrum mode according to the second spectrum mode and the first information.

In one possible implementation, the method further includes: the first terminal equipment sends second information to the second terminal equipment; the second information is used for indicating the first terminal device to transmit the service data of the first service in the first spectrum mode. In the above technical solution, the first terminal device may indicate the first spectrum mode to the second terminal device, so that the first terminal device and the second terminal device may transmit the service data of the first service on the spectrum resource corresponding to the first spectrum mode, that is, the second terminal device only needs to receive the service data of the first service on the spectrum resource corresponding to the first spectrum mode, which is beneficial to reducing energy consumption of the second terminal device.

In a possible implementation manner, the first terminal device sends second information to the second terminal device through a side link between the first terminal device and the second terminal device, where the second information includes an identifier of the first spectrum mode. In the above technical solution, the first terminal device may indicate the first spectrum mode to the second terminal device through a sidelink between the first terminal device and the second terminal device, so that the first terminal device and the second terminal device may transmit the service data of the first service through the sidelink on the spectrum resource corresponding to the first spectrum mode.

In a possible implementation manner, in the case that the first spectrum mode is an unlicensed spectrum mode, or a licensed spectrum mode and an unlicensed spectrum mode, the method further includes: the method comprises the steps that a first terminal device determines a first unlicensed spectrum resource from unlicensed spectrum resources, and the first unlicensed spectrum resource is used for transmitting service data of a first service between the first terminal device and a second terminal device; the first terminal device sends the information of the first unlicensed spectrum resource to the second terminal device. In the above technical solution, the first terminal device may determine the first unlicensed spectrum resource from the unlicensed spectrum, and then the first terminal device sends the information of the first unlicensed spectrum resource to the second terminal device, so that the second terminal device may not need to detect or receive service data from the first terminal device on all the unlicensed spectrum resources, which is beneficial to further reducing energy consumption of the second terminal device.

In a third aspect, the present application provides a communication method, which may be performed by a core network device or a module (e.g., a chip) in the core network device. The following describes an example in which the core network device performs the communication method.

In one possible implementation, a method includes: the core network equipment acquires the service information and the frequency spectrum mode corresponding to the service information, and sends the service information and the frequency spectrum mode corresponding to the service information to the first terminal equipment. In a possible implementation manner, the service information and the spectrum manner corresponding to the service information may be used by the first terminal device to determine the first spectrum manner, where the first spectrum manner is a licensed spectrum manner, an unlicensed spectrum manner, or a licensed spectrum manner and an unlicensed spectrum manner.

In the above technical scheme, the core network device can control different services to use different spectrum modes, and avoid the terminal device from using an inappropriate spectrum mode to transmit services.

In one possible implementation, the core network device may be a Policy Control Function (PCF) network element or a Unified Data Management (UDM) network element.

In a fourth aspect, the present application provides a communication method, which may be performed by a core network device or a module (e.g., a chip) in the core network device. The following description takes the core network device to execute the communication method as an example.

In one possible implementation, a method includes: the core network equipment acquires the frequency spectrum mode signed by the first terminal equipment and sends the frequency spectrum mode signed by the first terminal equipment to the first terminal equipment. In a possible implementation manner, the spectrum mode subscribed by the first terminal device may be used for the first terminal device to determine the first spectrum mode, where the first spectrum mode is a licensed spectrum mode, an unlicensed spectrum mode, or a licensed spectrum mode and an unlicensed spectrum mode.

In the above technical solution, the core network device may control the spectrum mode of the terminal device, and prevent the terminal device from transmitting the service in an unauthorized (or non-subscribed) spectrum mode.

In one possible implementation, the core network device may be a PCF network element or a UDM network element.

In a fifth aspect, an embodiment of the present application provides a communication apparatus, where the communication apparatus has a function of implementing the first aspect or the first terminal device in any possible implementation manner of the first aspect, and the apparatus may be a terminal device, and may also be a module (e.g., a chip) in the terminal device.

In one possible implementation, a communication device includes: the processing module is used for acquiring the service information of the first service; the processing module is further configured to control the transceiver module to transmit service data of the first service in a first spectrum manner according to the service information, where the service data of the first service is carried on a sidelink between the communication device and the second terminal device, and the first spectrum manner is an authorized spectrum manner, an unauthorized spectrum manner, or an authorized spectrum manner and an unauthorized spectrum manner.

In one possible implementation, the service information includes at least one of: PC5QoS parameters, service type, or service identification.

In one possible implementation, the processing module is further configured to: and determining a first frequency spectrum mode according to the service information.

In a possible implementation manner, the processing module is specifically configured to: and determining the first spectrum mode according to the corresponding relation between the service information and the first spectrum mode and the service information.

In a possible implementation manner, the processing module is specifically configured to: controlling an adjacent service layer to determine a first spectrum mode according to the corresponding relation between the service information and the first spectrum mode and the service information; or the control access layer determines the first spectrum mode according to the corresponding relation between the service information and the first spectrum mode and the service information.

In a possible implementation manner, the processing module is specifically configured to: determining a second frequency spectrum mode according to the corresponding relation between the service information and the second frequency spectrum mode and the service information; determining a first spectrum mode according to the second spectrum mode and the first information; the second spectrum mode is a priority authorized spectrum mode or a priority unauthorized spectrum mode; the first information includes at least one of: a usage status of a licensed spectrum resource, a usage status of an unlicensed spectrum resource, a proposed spectrum mode, or a licensed spectrum mode.

In one possible implementation, the processing module is further configured to: one or more of the usage state of the licensed spectrum resource and the usage state of the unlicensed spectrum resource are obtained.

In one possible implementation, the processing module is further configured to: and controlling the transceiver module to receive the first information.

In a possible implementation manner, the processing module is specifically configured to: controlling the adjacent service layer to determine a second frequency spectrum mode according to the corresponding relation between the service information and the second frequency spectrum mode and the service information; the control access layer determines a first spectrum mode according to the second spectrum mode and the first information; or, the control adjacent service layer determines the second frequency spectrum mode according to the corresponding relation between the service information and the second frequency spectrum mode and the service information; controlling the adjacent service layer to determine a first spectrum mode according to the second spectrum mode and the first information; or, the control access layer determines the second spectrum mode according to the corresponding relation between the service information and the second spectrum mode and the service information; and the control access layer determines the first frequency spectrum mode according to the second frequency spectrum mode and the first information.

In one possible implementation, the processing module is further configured to: controlling the transceiver module to send second information to the second terminal device; the second information is used for indicating the communication device to transmit the service data of the first service in the first frequency spectrum mode.

In a possible implementation manner, in a case that the first spectrum manner is an unlicensed spectrum manner, or a licensed spectrum manner and an unlicensed spectrum manner, the processing module is further configured to: determining a first unlicensed spectrum resource from the unlicensed spectrum resources, wherein the first unlicensed spectrum resource is used for transmitting service data of a first service between the communication device and the second terminal equipment; and controlling the transceiver module to send the information of the first unlicensed spectrum resource to the second terminal device.

In one possible implementation, the traffic data of the first traffic is carried on a first QoS flow in the sidelink.

In one possible implementation, the processing module is further configured to: and associating the first service to the first QoS flow according to the first spectrum mode and the spectrum mode corresponding to the first QoS flow.

In one possible implementation, the processing module is further configured to: and generating a first QoS flow according to the first spectrum mode.

In a sixth aspect, an embodiment of the present application provides a communication apparatus, where the communication apparatus has a function of implementing the first terminal device in any possible implementation manner of the second aspect or the second aspect, and the apparatus may be a terminal device, and may also be a module (e.g., a chip) in the terminal device.

In a possible implementation manner, the processing module is configured to obtain a spectrum mode subscribed by the communication device; the processing module is further configured to control the transceiver module to transmit service data of the first service in a first spectrum mode according to a spectrum mode subscribed by the communication device, where the service data of the first service is carried on a side link between the communication device and the second terminal device, and the first spectrum mode is an authorized spectrum mode, an unauthorized spectrum mode, or an authorized spectrum mode and an unauthorized spectrum mode.

In one possible implementation, the spectrum mode subscribed by the communication device includes at least one of: a licensed spectrum mode, an unlicensed spectrum mode, a licensed spectrum and unlicensed spectrum mode, a preferentially licensed spectrum mode, or a preferentially unlicensed spectrum mode.

In one possible implementation, the processing module is further configured to: and determining the first spectrum mode according to the spectrum mode subscribed by the communication device.

In a possible implementation manner, the processing module is specifically configured to: and determining a first spectrum mode according to the area information corresponding to the spectrum mode subscribed by the communication device and the first area information, wherein the first area information is used for representing the area where the communication device is located.

In a possible implementation manner, the processing module is specifically configured to: the control adjacent service layer determines a first spectrum mode according to the area information corresponding to the spectrum mode signed by the communication device and the first area information; or the control access layer determines the first spectrum mode according to the area information corresponding to the spectrum mode subscribed by the communication device and the first area information.

In a possible implementation manner, the processing module is specifically configured to: determining a second spectrum mode according to the spectrum mode signed by the communication device; determining a first spectrum mode according to the first information and the second spectrum mode; the second spectrum mode is a priority authorized spectrum mode or a priority unauthorized spectrum mode; the first information includes at least one of: a usage state of a licensed spectrum resource, a usage state of an unlicensed spectrum resource, a proposed spectrum mode, or a licensed spectrum mode.

In one possible implementation, the processing module is further configured to: one or more of the usage state of the licensed spectrum resources and the usage state of the unlicensed spectrum resources are obtained.

In a possible implementation manner, the processing module is specifically configured to: controlling an adjacent service layer to determine a second spectrum mode according to the spectrum mode signed by the communication device; the control access layer determines a first spectrum mode according to the second spectrum mode and the first information; or, controlling the adjacent service layer to determine a second spectrum mode according to the spectrum mode signed by the communication device; the control adjacent service layer determines a first frequency spectrum mode according to the second frequency spectrum mode and the first information; or, the control access layer determines a second spectrum mode according to the spectrum mode signed by the communication device; and the control access layer determines the first frequency spectrum mode according to the second frequency spectrum mode and the first information.

In one possible implementation, the processing module is further configured to: controlling the transceiver module to send second information to the second terminal device; the second information is used for indicating the communication device to transmit the service data of the first service in the first spectrum mode.

In a possible implementation manner, in the case that the first spectrum mode is an unlicensed spectrum mode, or a licensed spectrum mode and an unlicensed spectrum mode, the processing module is further configured to: determining a first unlicensed spectrum resource from the unlicensed spectrum resources, wherein the first unlicensed spectrum resource is used for transmitting service data of a first service between the communication device and the second terminal equipment; and controlling the transceiver module to send the information of the first unlicensed spectrum resource to the second terminal device.

In a seventh aspect, an embodiment of the present application provides a communication apparatus, where the communication apparatus has a function of implementing the core network device in any possible implementation manner of the third aspect or the third aspect, and the apparatus may be the core network device, and may also be a module (e.g., a chip) in the core network device.

In a possible implementation manner, the processing module is configured to acquire the service information and a spectrum manner corresponding to the service information, and control the transceiver module to send the service information and the spectrum manner corresponding to the service information to the first terminal device. In a possible implementation manner, the service information and the spectrum mode corresponding to the service information may be used by the first terminal device to determine the first spectrum mode, where the first spectrum mode is a licensed spectrum mode, an unlicensed spectrum mode, or a licensed spectrum mode and an unlicensed spectrum mode.

In an eighth aspect, an embodiment of the present application provides a communication apparatus, where the communication apparatus has a function of a core network device in any possible implementation manner of the fourth aspect or the fourth aspect, and the apparatus may be the core network device, and may also be a module (e.g., a chip) in the core network device.

In a possible implementation manner, the processing module is configured to acquire a spectrum mode subscribed by the first terminal device, and control the transceiver module to send the spectrum mode subscribed by the first terminal device to the first terminal device. In a possible implementation manner, the spectrum mode subscribed by the first terminal device may be used for the first terminal device to determine the first spectrum mode, where the first spectrum mode is a licensed spectrum mode, an unlicensed spectrum mode, or a licensed spectrum mode and an unlicensed spectrum mode.

In a ninth aspect, an embodiment of the present application provides a chip system, including: a processor coupled to a memory, the memory being configured to store a program or instructions, which, when executed by the processor, causes the system-on-chip to implement the method in the first aspect or any one of the possible implementations of the first aspect, or the method in the second aspect or any one of the possible implementations of the second aspect, or the method in the third aspect or any one of the possible implementations of the third aspect, or the method in any one of the possible implementations of the fourth aspect.

Optionally, the system-on-chip further comprises an interface circuit for interacting code instructions to the processor.

Optionally, the number of processors in the chip system may be one or more, and the processors may be implemented by hardware or software. When implemented in hardware, the processor may be a logic circuit, an integrated circuit, or the like. When implemented in software, the processor may be a general-purpose processor implemented by reading software code stored in a memory.

Optionally, the memory in the system on chip may also be one or more. The memory may be integral to the processor or may be separate from the processor. Illustratively, the memory may be a non-transitory processor, such as a read only memory ROM, which may be integrated on the same chip as the processor or may be separately provided on different chips.

In a tenth aspect, embodiments of the present application provide a computer-readable storage medium, on which a computer program or instructions are stored, which, when executed, cause a computer to perform the method of the first aspect or any one of the possible implementations of the first aspect, or perform the method of the second aspect or any one of the possible implementations of the second aspect, or perform the method of the third aspect or any one of the possible implementations of the third aspect, or perform the method of the fourth aspect or any one of the possible implementations of the fourth aspect.

In an eleventh aspect, embodiments of the present application provide a computer program product, which, when read and executed by a computer, causes the computer to perform the method in the first aspect or any one of the possible implementations of the first aspect, or perform the method in the second aspect or any one of the possible implementations of the second aspect, or perform the method in the third aspect or any one of the possible implementations of the third aspect, or perform the method in any one of the possible implementations of the fourth aspect or the fourth aspect.

In a twelfth aspect, an embodiment of the present application provides a communication system, where the communication system includes a core network device and a first terminal device, where the first terminal device is configured to execute the method in the first aspect or any one of the possible implementation manners of the first aspect, and the core network device is configured to execute the method in any one of the possible implementation manners of the third aspect or the third aspect;

or, the first terminal device is configured to execute the method in any possible implementation manner of the second aspect or the second aspect, and the core network device is configured to execute the method in any possible implementation manner of the fourth aspect or the fourth aspect.

Technical effects that can be achieved by any one of the fifth aspect to the twelfth aspect can be referred to the description of the related advantageous effects in the first aspect to the fourth aspect, and are not repeated herein.

Drawings

Fig. 1 is an architecture diagram of a communication system provided;

FIG. 2 is a schematic diagram of a provided 5G QoS model based on QoS flow;

fig. 3 is a QoS flow-based QoS model for D2D communication;

fig. 4 is a schematic flow chart of establishing a PC5 link;

fig. 5 is a flowchart illustrating a communication method provided in the present application;

fig. 6 is a schematic flow chart of service data transmission between UE1 and UE2 in a specific application scenario provided in the present application;

fig. 7 is a schematic flow chart of a ProSe layer determining a first spectrum manner provided by the present application;

fig. 8 is a schematic flowchart of a method for determining a first spectrum by an AS layer according to the present application;

fig. 9 is a schematic flowchart of a first spectrum determining manner by a ProSe layer and an AS layer provided in the present application;

fig. 10 is a schematic flow chart of another communication method provided in the present application;

fig. 11 is a schematic flowchart of a service data transmission process between UE1 and UE2 in another specific application scenario provided in the present application;

fig. 12 is a schematic flow chart of another ProSe layer determination of the first spectrum manner provided in the present application;

fig. 13 is a schematic structural diagram of a communication device provided in the present application;

fig. 14 is a schematic structural diagram of another communication device provided in the present application.

Detailed Description

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

Fig. 1 is a system architecture used in the communication method of the present application, and the network functions and entities included in the system mainly include: a terminal equipment (UE), a Radio Access Network (RAN) device, a User Plane Function (UPF) network element, a Data Network (DN), an access and mobility management function (AMF) network element, a Session Management Function (SMF) network element, a Network Exposure Function (NEF) network element, a Policy Control Function (PCF) network element, an Application Function (AF) network element, a network slice selection function (nff) network element, an authentication server function (AUSF) network element, an AUSF network element, a unified data management (udf) network element, a storage network function (NRF) network element, and a storage network function (NRF) network element.

Further, fig. 1 shows an interaction relationship between a network function and an entity and a corresponding interface, for example, an interaction between a terminal device and an AMF network element may be performed through an N1 interface, and an interaction Message is referred to as an N1 Message. Part of the interface can be realized by adopting a service interface.

The data stream of the user may be transmitted through a Protocol Data Unit (PDU) session established between the terminal device and the DN, and the specific transmission may be performed through the radio access network device and the UPF network element.

The network functions and entities are explained as follows:

the terminal equipment: may be a user device, a handheld terminal, a laptop, a cellular phone, a smart phone, a tablet, a handheld device, an AR device, a VR device, a machine type communication terminal, or other network accessible device. The terminal device and the radio access network device communicate with each other by using a certain air interface technology (e.g., new Radio (NR) or Long Term Evolution (LTE) technology). The terminal device and the terminal device may also communicate with each other by using a certain air interface technology (such as NR or LTE technology). In the communication of the internet of vehicles, a communication terminal uploaded by a vehicle can be used as a terminal device, and a Road Side Unit (RSU) can also be used as a terminal device. Load communication terminal on the unmanned aerial vehicle, also can regard as a terminal equipment.

A radio access network device: the method is mainly responsible for functions of wireless resource management, service quality management, data compression, encryption and the like on the air interface side. The radio access network equipment may include various forms of base stations, such as: macro base stations, micro base stations, relay stations, access points, etc. In systems using different radio access technologies, the names of devices with base station functionality may differ, for example, in NR systems, referred to as gnbs.

AMF network element: belongs to a core network element and is mainly responsible for: access control, mobility management, attach and detach, and gateway selection. In the case that the AMF network element provides a service for a session of the terminal device, a storage resource of a control plane may be specifically provided for the session, and the storage resource may be used to store an identifier of the session, an identifier of an SMF network element associated with the session, and the like.

SMF network element: the method is responsible for user plane network element selection, user plane network element redirection, internet Protocol (IP) address allocation, bearer establishment, modification and release, qoS control and the like.

UPF network element: and the terminal equipment is responsible for forwarding and receiving user data in the terminal equipment. For example, the UPF network element may receive user data from the DN and transmit the user data to the terminal device through the radio access network device; the UPF network element can also receive user data from the terminal equipment through the wireless access network equipment and forward the user data to the DN. The UPF network element provides the transmission resource and the scheduling function of the service for the terminal equipment.

NEF network element: for supporting The interaction of third Generation Partnership project (The 3rd Generation Partnership project,3 GPP) network and third party application security.

AF network element: the system is used for providing services, and can also provide some services of a third party to the network side.

PCF network element: the policy rules are responsible for policy control decisions, provide control plane functions, and traffic-based charging control functions, among others.

NSSF network element: the method is mainly responsible for network slice selection, and determines the network slice examples allowed to be accessed by the terminal equipment according to slice selection auxiliary information, subscription information and the like of the terminal equipment.

UDM network element: the method is mainly responsible for the subscription data management of the terminal equipment, including the storage and management of the terminal equipment identification, the access authorization of the terminal equipment and the like.

AUSF network element: 3GPP and non-3 GPP access authentication is supported.

NRF network element: registration and discovery of network functions is supported.

UDR network element: and storing and acquiring subscription data used by the UDM network element and the PCF network element.

It should be noted that each network element in the core network may also be referred to as a functional entity or device, and may be a network element implemented on dedicated hardware, a software instance running on dedicated hardware, or an instance of a virtualized function on an appropriate platform.

The architecture of the communication system shown in fig. 1 is not limited to include only the network elements shown in the figure, and may also include other devices not shown in the figure, which are not specifically listed herein. The embodiment of the present application does not limit the distribution form of each network element, and the distribution form shown in fig. 1 is only an example, and the present application is not limited.

The communication system shown in fig. 1 does not limit the communication system to which the embodiments of the present application can be applied. The communication system architecture shown in fig. 1 is a 5G system architecture, and optionally, the method in the embodiment of the present application is also applicable to various future communication systems, for example, a 6G or other communication networks.

For convenience of description, the network element shown in fig. 1 is taken as an example in the following of the present application, and the "XX network element" is directly and simply referred to as "XX", for example, the AMF network element is directly and simply referred to as "AMF", and the "radio access network device" is directly and simply referred to as "RAN". It should be understood that the names of all network elements in the present application are only used as examples, and may also be referred to as other names in future communications, or network elements referred to in the present application may also be replaced by other entities or devices with the same function in future communications, and the present application does not limit the present application.

To facilitate an understanding of the embodiments of the present application, a description will first be given of concepts and basic knowledge related to the embodiments of the present application.

1. 5G QoS management

In the 5G system, in order to guarantee the end-to-end service quality of the service, a 5G QoS model based on QoS flow is proposed, which can be seen in fig. 2. The 5G QoS model supports guaranteed bit rate (GRB) QoS flow (GBR QoS flow) and Non-guaranteed bit rate QoS flow (Non-GBR QoS flow), and receives the same transmission process (e.g., scheduling, admission threshold, etc.) using the same QoS flow-controlled packet.

For a terminal device, it may establish one or more PDU sessions with the 5G network; one or more QoS flows may be established per PDU session. Each QoS flow is identified by a QoS Flow Identifier (QFI) that uniquely identifies a QoS flow within a PDU session. One QoS flow is either GBR QoS flow or Non-GBR QoS flow, determined by the corresponding QoS profile.

For GBR QoS flow, the QoS profile corresponding to GBR QoS flow must contain the following QoS parameters: a 5G QoS indicator (5G QoS identifier, 5QI), allocation and Retention Priority (ARP), a Guaranteed Flow Bit Rate (GFBR), and a Maximum Flow Bit Rate (MFBR). Optionally, the QoS profile corresponding to the GBR QoS flow may further include QoS Notification Control (QNC). The GBR QoS flow is divided into GRB QoS flow requiring QNC and GBR QoS flow not requiring QNC according to whether the QoS configuration file contains QNC. For GBR QoS flow requiring QNC, when RAN detects that the corresponding QoS flow resource can not be satisfied, RAN informs SMF of the event and then informs PCF. Further, the SMF may initiate QoS flow deletion or modify the flow.

For Non-GBR QoS flow, the QoS configuration file corresponding to the Non-GBR QoS flow must contain the following QoS parameters: 5QI, ARP; optionally, the QoS configuration file corresponding to the Non-GBR QoS flow may further include a Reverse QoS Attribute (RQA).

Specifically, the QoS parameters are defined as follows:

5QI: is a scalar used for indexing to the corresponding 5G QoS characteristics; the 5QI is classified into a standardized 5QI, a preconfigured 5QI, and a dynamically assigned 5QI. For a standardized 5QI, there is a one-to-one correspondence with a set of standardized 5G QoS characteristics; for a preconfigured 5QI, a corresponding 5G QoS feature value is preconfigured at the access network node (AN); for dynamically allocated 5 QIs, the corresponding 5G QoS characteristics are included in the QoS profile sent to the AN. The QoS characteristic values include a resource type (resource type, which is classified into GBR and Non-GBR), a priority level (priority level), a packet delay budget (packet delay budget, which is understood as the delay from the terminal device to the UPF), a packet error probability (packet error rate), a maximum data burst size (maximum data burst volume), and an averaging window (averaging window, which can be used to calculate the rate corresponding to the GBR).

ARP: the method comprises the steps of (1) including priority level, preemption capability and preempted capability;

RQA: for indicating that the traffic transmitted using the corresponding QoS flow uses the reverse QoS;

and (3) QNC: used for instructing RAN whether to inform the network when GFBR can not be satisfied during the service life of QoS flow;

GFBR: represents the bit rate expected to be provided to the GBR QoS flow;

MFBR: the bit rate provided to GBR QoS flow, i.e. the maximum bit rate provided to GBR QoS flow, is limited. E.g., exceeding the bit rate, the packet may be dropped.

The 5G network may execute a management flow of QoS control through a signaling plane, and the SMF performs binding from Service Data Flow (SDF) to QoS flow based on QoS and service requirements. The SMF allocates a QoS flow identifier of a new QoS flow to the SDF according to a local policy or a Policy and Charging Control (PCC) rule sent by the PCF, and calculates a QoS configuration file and corresponding Packet Detection Rule (PDR) information. The PCC rules include two types: dynamic PCC rules and predefined PCC rules. The dynamic PCC rules are provided by the PCF to the SMF, and the predefined PCC rules are configured on the SMF. The PCC rules include service data flow detection, charging, and policy control (policy control). The service data flow detection correlation includes a service data flow template (SDF template, a data packet detected by the service data flow template in a PCC rule forms an SDF) and a template priority. The policy Control correlation includes Gate status (traffic data flow can be passed or dropped), authorized QoS parameters (5 QI, ARP, maximum bitrate, guaranteed bitrate, etc.), QNC, and Reflective QoS Control. Wherein, the maximum bitrate is the maximum bitrate of the service data stream, and the guaranteed bitrate is the guaranteed bitrate of the service data stream.

2. D2D QoS management

In 5G D2D communication, one or more PC5 links may be established between two terminal devices (which may be respectively denoted as UE1 and UE 2), and the PC5 link may be a PC5 unicast link. Further, each PC5 link corresponds to a pair of application Layer identifications (APP Layer IDs). Fig. 3 is a QoS model based on QoS flow in D2D communication exemplarily provided by the present application, where a PC5 link 1 corresponds to an application layer identifier 1 and an application layer identifier 2, where the application layer identifier 1 is an application layer identifier of a UE1, and the application layer identifier 2 is an application layer identifier of a UE2.

One or more QoS flows may be established in each PC5 link, as in the example shown in fig. 3, PC5QoS flow #1 to PC5QoS flow #3 are established in PC5 link 1. Further, each PC5QoS flow is identified by a PC5QoS flow identifier (PFI), and the PC5QoS flow identifier uniquely identifies one PC5QoS flow in the PC5 link. D2D QoS supports GBR QoS flow and Non-GBR QoS flow.

The PC5QoS parameters include PQI (PC 5 QI), PC5 flow bit rate (PC 5 flow bit rate), and PC5 link aggregated bit rate (PC 5 link aggregated bits). The PQI is a special 5QI, each PQI value corresponds to a QoS characteristic value in a one-to-one mode, and the QoS characteristic values comprise resource types, priority levels, data packet delay budgets, data packet error probabilities, maximum data burst volumes and average windows. The PC5 stream bit rate includes a guaranteed stream bit rate and a maximum stream bit rate, and the contents of the PC5QoS parameters can be referred to the related explanations in the above-mentioned 5G QoS management.

For QoS management in a D2D scenario, the terminal device may obtain QoS mapping configuration from the PCF in the registration process, and the QoS mapping configuration is included in the terminal device policy. The QoS mapping configuration comprises the following steps: configuring 1) corresponding relation between service types or service requirements (priority, reliability, time delay and the like) and PC5QoS parameters (such as PQI, MFBR/GFBR and the like); and (2) configuring the corresponding relation between the PC5QoS parameters and Side Link Radio Bearers (SLRBs). Wherein the PC5QoS parameters are network authorized PC5QoS parameters. The configuration 1) can be used for the terminal device under the network service and the non-network service, and the configuration 2) can be used for the terminal device under the non-network service. The PCF provides the authorized PC5QoS parameters to the terminal device and at the same time sends the authorized PC5QoS parameters to the RAN where the terminal device resides through the AMF. It is noted that the PC5QoS parameters sent to the terminal device and RAN are both PC5QoS parameters for direct communication between terminal devices. The PC5QoS parameters for direct communication between terminal devices may be understood as PC5 links for which the PC5QoS parameters are used for direct communication between terminal devices.

In the process of establishing a link or updating the link between terminal devices, PC5QoS flow information is negotiated, and PC5QoS flow is established. Different traffic with the same PC5QoS parameters are associated into the same PC5QoS flow. For each PC5QoS flow, the PC5QoS flow information comprises a PC5QoS flow identifier and PC5QoS parameter information corresponding to the PC5QoS flow identifier. And the terminal equipment deduces a QoS rule (QoS rule) which represents the corresponding relation between a PC5 data Packet Filter Set (PC 5 Packet Filter Set) and a PC5QoS flow identifier. The PC5 packet filtering set may include any combination of service type, source layer 2identifier (Source layer-2identifier, source L2 ID)/Destination layer 2identifier (Destination layer-2identifier, destination L2 ID), and application layer ID. The PC5 packet filtering set may be an IP packet filtering set including any combination of source/destination IP addresses, source/destination port numbers, and the like.

After the terminal device negotiates the PC5QoS parameter information, the terminal device provides the PC5QoS parameter information and link information (such AS a PC5 link ID (PC 5 link ID) or a destination layer 2 identifier) to the RAN under a network service, so that the terminal device obtains Access Stratum (AS) layer configuration (such AS logical channel configuration or radio bearer configuration) corresponding to the PC5QoS parameter from the RAN. RAN authorizes the PC5QoS parameter provided by the terminal equipment according to the authorized PC5QoS parameter acquired from PCF, and provides AS layer configuration after authorization is passed.

3. PC5 link establishment

A schematic flow chart of establishing a PC5 link between two terminal devices (which may be respectively denoted as UE1 and UE 2) in a 5G system is shown in fig. 4, where the PC5 link established between UE1 and UE2 may be a PC5 unicast link.

In step 401, ue1 sends a direct communication request message.

The direct communication request message includes the application layer identity of the UE2. Specifically, the UE1 transmits the direct communication request message, which may be a broadcast message, using the source layer 2 identity and the destination layer 2 identity. Wherein, the source layer 2 is identified as the layer 2 address allocated by the UE1, and the destination layer 2 is identified as the broadcasted layer 2 address. Before the UE1 transmits the direct communication request message, the UE2 determines a layer 2 address for receiving the direct communication request message, and configures the layer 2 address of the UE2 on the UE2 side.

Step 402, a secure channel is established between UE1 and UE2.

And step 403, the UE2 receives the direct communication request message broadcast by the UE1, determines that the direct communication request message comprises the application layer identification of the UE2, and the UE2 responds to the direct communication request message and sends a direct communication response message to the UE1. Illustratively, the direct communication response message may be a direct communication accept message. The source layer 2identifier corresponding to the direct communication response message is the layer 2 address allocated by the UE2 itself, and the destination layer 2identifier is the layer 2 address of the UE1 in step 401.

Optionally, in step 401 and step 403, PC5QoS flow information may also be negotiated between UE1 and UE2, and the PC5QoS flow information may include a PC5QoS flow identifier and PC5QoS parameter information corresponding to the PC5QoS flow identifier.

In step 404, after the PC5 link is established between the UE1 and the UE2, the UE1 and the UE2 may transmit service data to each other, where the service data may also be referred to as sidelink data, sidelink service data, proximity-based services (ProSe) data, or the like.

It should be noted that UE1 and UE2 also respectively allocate a PC5 link id to identify the PC5 link, where the PC5 link id is allocated separately for each terminal device and is only used interactively between layers inside the terminal device. Taking any one of the terminal devices, for example, UE1, AS an example, the UE1 includes a ProSe layer and an AS layer, and after the ProSe layer establishes a PC5 link with another terminal device (i.e., UE 2), the ProSe layer sends a PC5 link identifier, an identifier of a source layer 2 used by the PC5 link, and an identifier of a destination layer 2 to the AS layer. The AS layer stores the corresponding relation of the PC5 link identification, the source layer 2 identification and the destination layer 2 identification. After the ProSe layer establishes the PC5QoS flow, the PC5QoS flow identification and the corresponding PC5QoS parameter are sent to the AS layer, the AS layer stores the PC5QoS parameter corresponding to the PC5QoS flow identification, and the AS layer configuration (such AS logic channel configuration or wireless bearing configuration) is generated according to the PC5QoS parameter.

When UE1 sends a data packet, the ProSe layer determines a PC5 link identification and a PC5QoS flow identification corresponding to the data packet, carries the PC5 link identification and the PC5QoS flow identification with the data packet to the AS layer, the AS layer determines an active layer 2 identification and a target layer 2 identification according to the PC5 link identification, the AS layer determines AS layer configuration according to the PC5QoS flow identification, and the AS layer sends corresponding data by using the active layer 2 identification, the target layer 2 identification and the AS layer configuration. When the UE1 receives the data packet, the AS layer of the UE1 can receive the data packet sent by all terminal equipment, determine whether the destination layer 2identifier is the L2 ID allocated by the UE, if so, judge that the UE is the receiving end of the data, and submit the data to an upper layer for further processing; if not, the data packet is discarded.

4. Licensed, unlicensed, spectrum resources

Licensed spectrum (licensed spectrum): at present, public mobile communication networks all use authorized spectrum, are authorized by telecommunication or frequency management departments of various countries, and do not allow other technologies and networks to use in the authorized spectrum range so as to ensure the quality and the safety of the mobile network. The requirements such as service reliability can be guaranteed by authorizing the spectrum resource transmission service in the spectrum.

Unlicensed spectrum (unlicensed spectrum): the use of unlicensed spectrum is application-free and free of charge. Among them, technologies such as wireless fidelity (WiFi), zigbee (zigbee) and the like use unlicensed spectrum. The requirements such as service reliability and the like when the service is transmitted through the spectrum resources in the unlicensed spectrum are not easy to guarantee. In this application, unlicensed spectrum may also be referred to as unlicensed spectrum.

Spectrum resource (spectrum resource): refers to the frequency resource used for transmitting the radio electromagnetic wave, and can be a section of frequency spectrum resource or some specific frequency resource. For example, the spectrum resources in the licensed spectrum may be frequency resources in a 100MHz bandwidth of 3500MHz-3600MHz, and the spectrum resources in the unlicensed spectrum may be frequency resources in a 200MHz bandwidth of 5.15GHz-5.35 GHz.

After the PC5 link is established between the two terminal devices, the two terminal devices can transmit service data to each other through the sidelink. The communication method provided by the application can be used for reasonably determining the frequency spectrum mode, so that the two terminal devices can transmit the service data in the determined frequency spectrum mode.

In this application, the two terminal devices may be a first terminal device and a second terminal device, respectively, where the first terminal device may be a sending end of service data, and the second terminal device may be a receiving end of the service data. For convenience of description, the first terminal device is abbreviated as UE1 and the second terminal device is abbreviated as UE2 as follows.

The service data transmitted by UE1 and UE2 may be referred to as service data of the first service; the spectrum mode of the UE1 and the UE2 for transmitting the service data of the first service may be referred to as a first spectrum mode, and the first spectrum mode may be a licensed spectrum mode, an unlicensed spectrum mode, or a licensed spectrum and unlicensed spectrum (licensed spectrum and unlicensed spectrum) mode. Specifically, when the first spectrum mode is the authorized spectrum mode, the UE1 and the UE2 may transmit service data of the first service through the authorized spectrum; when the first spectrum mode is an unlicensed spectrum mode, the UE1 and the UE2 can transmit service data of a first service through the unlicensed spectrum; when the first spectrum mode is a licensed spectrum mode and an unlicensed spectrum mode, the UE1 and the UE2 may transmit service data of the first service through the licensed spectrum and the unlicensed spectrum. For example, UE1 may implement transmission of traffic data of the first traffic with UE2 by using both the licensed spectrum and the unlicensed spectrum based on a Carrier Aggregation (CA) manner.

Fig. 5 illustrates a communication method of the present application, in which UE1 may transmit service data of a first service in a first spectrum manner with UE2 according to service information of the first service, which is described in detail below.

In step 501, the ue1 obtains service information of the first service.

Optionally, when the application layer of the UE1 initiates the request of the first service, the application layer of the UE1 may generate service information of the first service, and send the service information of the first service to the ProSe layer of the UE1. Accordingly, the ProSe layer of UE1 may obtain the service information of the first service from the application layer of UE1.

Wherein the service information of the first service may include at least one of the following (1) to (3):

(1) PC5QoS parameters for a first service

The PC5QoS parameters of the first service may include one or more of the following: PQI of the first service, or bit rate of the first service.

(2) Service type of first service

Wherein the service type of the first service may include one or more of the following: video, voice, or critical service (ProSe service), proSe service type (ProSe service type), provider Service Identifier (PSID), or intelligent transportation systems application identifier (ITS-AID). The ProSe service type may be used to identify a service whose service type is ProSe.

(3) Service identification of a first service

The service identifier of the first service may be a ProSe identifier (ProSe identifier) or a stream description (traffic descriptor) of the first service.

The flow description of the first service may be an IP description (IP descriptor) corresponding to the first service, or a domain description (domain descriptor), where the domain description is, for example, a Fully Qualified Domain Name (FQDN).

And step 502, the UE1 adopts a first spectrum mode to transmit the service data of the first service with the UE2 according to the service information of the first service.

The UE1 and the UE2 transmit the service data of the first service, which may be understood that the service data of the first service is carried on the sidelink between the UE1 and the UE2. In the present application, the sidelink between UE1 and UE2 may be a PC5 link (PC 5 link), a Layer 2link (Layer-2 link), or a PC5 unicast link (PC 5 unicast link).

In the above technical solution, the UE1 may transmit the service data of the first service with the UE2 in the first spectrum mode according to the service information of the first service, so that the UE1 and the UE2 may transmit the service data in the spectrum mode more suitable for the service characteristics, which is beneficial to better meet the service requirement and reasonably utilize the licensed spectrum and the unlicensed spectrum.

Optionally, in a first implementation scenario of the foregoing embodiment, the method further includes: the UE1 determines the first spectrum mode according to the service information of the first service.

Specifically, the UE1 may determine the first spectrum mode according to the correspondence between the service information and the spectrum mode and the service information of the first service. As follows, the corresponding relationship between the service information and the spectrum mode is explained first:

the spectrum mode in the correspondence may include one or more of the following: a licensed spectrum mode, an unlicensed spectrum mode, a licensed spectrum and unlicensed spectrum mode, a prioritized licensed spectrum mode, or a prioritized unlicensed spectrum mode. The licensed spectrum manner, the unlicensed spectrum manner, the licensed spectrum manner, and the unlicensed spectrum manner can all be referred to the description related to the first spectrum manner, and the priority licensed spectrum manner and the priority unlicensed spectrum manner are explained as follows:

the preferred licensed spectrum manner may be understood as that UE1 and UE2 may transmit the service data in the licensed spectrum manner or in the unlicensed spectrum manner, but preferentially transmit the service data in the licensed spectrum manner. For example, UE1 may first determine whether to transmit the service data in the authorized spectrum manner, and if so, transmit the service data in the authorized spectrum manner; otherwise, the UE1 may transmit the service data in an unlicensed spectrum. For the implementation manner in which the UE1 determines whether to transmit the service data in the authorized spectrum manner, reference may be made to the following embodiments.

The unlicensed spectrum is prioritized, and it is understood that UE1 and UE2 may transmit service data in the unlicensed spectrum or in the licensed spectrum, but preferentially transmit service data in the unlicensed spectrum. For example, UE1 may determine whether to transmit service data in an unlicensed spectrum manner, and if so, transmit the service data in the unlicensed spectrum manner; otherwise, the UE1 may transmit the service data in the authorized spectrum manner. For the implementation manner in which the UE1 determines whether to transmit the service data in the unlicensed spectrum, reference may be made to the following embodiments.

The service information in the corresponding relationship may include one or more of a PC5QoS parameter, a service type, and a service identifier, and the specific description may refer to the description in the service information of the first service, which is not described herein again.

Based on the service information in the corresponding relationship being a PC5QoS parameter, or a service type, or a service identifier, three possible implementation manners are exemplarily explained as follows:

in a 1 st possible implementation manner, the service information in the correspondence may be a PC5QoS parameter.

The service information in the correspondence may specifically be PQI in the PC5QoS parameters, that is, PQI may correspond to a spectrum mode. As explained in connection with the example exemplarily shown in table 1, the table 1 includes 5 pieces of service information, and the 5 pieces of service information may specifically include PQI =90, PQI =91, PQI =58, PQI =59, and PQI =70. Further, each service information (i.e., each PQI) may correspond to a respective spectrum mode, for example, PQI =90 corresponds to a licensed spectrum mode, and for example, PQI =59 corresponds to a prioritized unlicensed spectrum mode.

TABLE 1

Service information	Frequency spectrum mode
		PQI＝90	Licensed spectrum approach
PQI＝91	Priority licensed spectrum mode
		PQI＝58	Unlicensed spectrum mode
PQI＝59	Prioritized unlicensed spectrum mode
		PQI＝70	Licensed and unlicensed spectrum modes

It should be noted that table 1 is only an exemplary explanation, and each service information in the corresponding relationship may further include a plurality of PQIs, for example, the service information includes PQI =90 and PQI =91, and the PQI =90 and PQI =91 may correspond to a licensed spectrum manner; for example, the traffic information includes PQI =58 and PQI =59, and the PQI =58 and PQI =59 may correspond to an unlicensed spectrum; or, the service information in the correspondence may also be a PQI interval, for example, the service information includes a PQI interval [90-93], the PQI interval [90-93] may correspond to a licensed spectrum manner, for example, the service information includes a PQI interval [58-60], and the PQI interval [58-60] corresponds to an unlicensed spectrum manner. Or, each service information in the correspondence may correspond to multiple spectrum manners, for example, PQI =90 may correspond to a licensed spectrum manner, or a licensed spectrum and an unlicensed spectrum manner; PQI =91 may correspond to a prioritized licensed spectrum approach, or a licensed spectrum approach and an unlicensed spectrum approach. It should be noted that the description is also applicable to the following related examples in tables 2 to 5, that is, the correspondence relationships in tables 2 to 5 are also exemplary descriptions and do not limit the present application.

In addition, the service information in the correspondence may specifically be a bit rate in the PC5QoS parameter, that is, the bit rate may correspond to a spectrum manner. For example, the GBR may correspond to a licensed spectrum mode, or a preferentially licensed spectrum mode, or a licensed spectrum mode and an unlicensed spectrum mode; as another example, the Non-GBR may correspond to an unlicensed spectrum mode, or a prioritized unlicensed spectrum mode, etc.

In a 2 nd possible implementation manner, the service information in the correspondence may be a service type, that is, the service type may correspond to a spectrum manner. Exemplarily, the service type in the correspondence relationship may include a video, a key service, a ProSe service type, and a service provider service identifier, where the video may correspond to an unlicensed spectrum mode, or a preferred unlicensed spectrum mode, or a licensed spectrum and an unlicensed spectrum mode; the key service can correspond to a licensed spectrum mode, or a priority licensed spectrum mode, or a licensed spectrum and an unlicensed spectrum mode; the ProSe service type may correspond to a prioritized unlicensed spectrum approach; the service business identification may correspond to a licensed spectrum mode, or a preferred licensed spectrum mode.

The example shown in table 2 is explained, and includes 5 pieces of service information, where the 5 pieces of service information may be video 1, video 2, key service 1, proSe service type 1, and service provider service identifier 1, respectively, for example, in table 2, video 1 corresponds to an unlicensed spectrum mode, and video 2 corresponds to a prioritized unlicensed spectrum mode.

TABLE 2

Service information	Frequency spectrum mode
		Video
1	Unlicensed spectrum mode
		Video
2	Prioritized unlicensed spectrum mode
		Key business
1	Licensed and unlicensed spectrum modes
		ProSe service type 1	Prioritized unlicensed spectrum mode
Service business identification 1	Priority licensed spectrum mode

In a 3rd possible implementation manner, the service information in the correspondence may be a service identifier, that is, the service identifier may correspond to a spectrum manner. For example, the service identifier in the corresponding relationship may include a flow description. With reference to the corresponding relationship explanation exemplarily shown in table 3, table 3 includes 5 pieces of service information, and the 5 pieces of service information may be respectively flow description 1 to flow description 5, where flow description 1 corresponds to a licensed spectrum manner, flow description 2 corresponds to an unlicensed spectrum manner, and flow description 3 corresponds to a licensed spectrum and an unlicensed spectrum manner, etc.

TABLE 3

Service information	Frequency spectrum mode
		Description of the flow 1	Licensed spectrum approach
Description of the flow 2	Unlicensed spectrum mode
		Stream description
3	Licensed and unlicensed spectrum modes
		Stream description
4	Priority licensed spectrum mode
		Stream description
5	Prioritized unlicensed spectrum mode

It should be noted that the service information in the correspondence may further include a plurality of parameters, such as a QoS parameter of the PC5, a service type, and a service identifier. Illustratively, the service information in the correspondence may include the PC5QoS parameter and the service type, or include the PC5QoS parameter, the service type and the service identifier, and so on. As follows, the service information in the correspondence relationship includes a PC5QoS parameter and a service type, where the PC5QoS parameter is PQI, and the service type is video or a key service, as an example, for explanation, specifically, refer to the following 4 th possible implementation manner and 5 th possible implementation manner.

In a 4 th possible implementation, the PC5QoS parameters and the traffic type may correspond to their own spectrum patterns, respectively. Explained with reference to the correspondence exemplarily shown in table 4, the table 4 includes 5 pieces of service information, the 5 pieces of service information include 3 PC5QoS parameters and 2 service types, the 3 PC5QoS parameters are specifically PQI =90, PQI =91, and PQI =58, and the 2 service types are specifically video 1 and key service 1. Further, each service information (PC 5QoS parameter or service type) may correspond to a respective spectrum mode, for example, PQI =90 corresponds to a licensed spectrum mode, and for example, video 1 corresponds to an unlicensed spectrum mode.

TABLE 4

Service information	Frequency spectrum mode
		PQI＝90	Licensed spectrum approach
PQI＝91	Priority licensed spectrum mode
		PQI＝58	Unlicensed spectrum mode
Video
	1	Unlicensed spectrum mode
Key business
	1	Licensed spectrum approach

In a possible implementation manner of the 5 th, the service information in the correspondence relationship includes a PC5QoS parameter and a service type, and the PC5QoS parameter and the service type may correspond to a spectrum manner together. As explained in connection with the correspondence exemplarily shown in table 5, the table 5 includes 2 pieces of service information, which may be respectively denoted as PQI =90 and key service 1, and PQI =91 and video 1. Further, PQI =90 and critical service 1 may correspond to a licensed spectrum approach; PQI =91 and video may correspond to licensed and unlicensed spectrum modes.

TABLE 5

Service information	Frequency spectrum mode
		PQI =90 and critical service 1	Licensed spectrum approach
PQI =91 and video 1	Licensed and unlicensed spectrum modes

Of course, the 1 st to 5 th possible implementations of the correspondence relationship are only used for explaining the correspondence relationship in the present application, and are not limited to the definition of the present application, and the correspondence relationship in the present application may be in other forms.

The above correspondence may be pre-configured in the UE1, or obtained by the UE1 from an application server, or obtained by the UE1 from a core network device (e.g., PCF), without limitation.

For example, UE1 may obtain the corresponding relationship from the PCF during registration. Specifically, UE1 sends 5G proximity service capability (5G ProSe capability) to AMF, AMF transfers the 5G proximity service capability to PCF, and PCF sends the correspondence to UE1 in response to the 5G proximity service capability. Further, the corresponding relationship may be generated by the PCF, or obtained by the PCF from the AF or UDR.

Based on the above description about the corresponding relationship, two specific implementation scenarios that the UE1 determines the first spectrum manner according to the corresponding relationship between the service information and the spectrum manner and the service information of the first service are explained as follows:

in a first specific implementation scenario, the UE1 may determine the first spectrum manner according to the corresponding relationship between the service information of the first service and the first spectrum manner, and the service information of the first service.

It is interpreted that the service information of the first service in the corresponding relationship corresponds to the authorized spectrum mode, the unauthorized spectrum mode, or the authorized spectrum and unauthorized spectrum modes, and the UE1 may use the spectrum mode corresponding to the service information of the first service in the corresponding relationship as the first spectrum mode.

With reference to the example in table 1, the service information of the first service includes PQI =90, and then the UE1 may determine that the first spectrum mode is the authorized spectrum mode according to PQI =90 and the corresponding relationship; or, in combination with the example in table 2, the service information of the first service includes video 1, so that UE1 may determine that the first spectrum mode is the unlicensed spectrum mode according to video 1 and the corresponding relationship; or, in combination with the example in table 3, the service information of the first service includes the flow description 1, so that the UE1 may determine that the first spectrum mode is the authorized spectrum mode according to the flow description 1 and the corresponding relationship.

In this application, the ProSe layer of the UE1 may obtain the service information of the first service from the application layer, and obtain a corresponding relationship between the service information and the spectrum mode. In a first specific implementation scenario, the UE1 determines the first spectrum mode may be implemented by a ProSe layer or an AS layer of the UE1, and reference may be made to the following two modes:

the method comprises the steps that a ProSe layer determines a first spectrum mode according to service information and a corresponding relation of a first service;

and secondly, the AS layer acquires the service information and the corresponding relation of the first service from the ProSe layer, and determines the first spectrum mode according to the service information and the corresponding relation of the first service.

In a second specific implementation scenario, the UE1 determines the second spectrum mode according to the correspondence between the service information of the first service and the second spectrum mode, and the service information of the first service; and the UE1 determines the first spectrum mode according to the second spectrum mode and the first information.

The interpretation is that the service information of the first service in the corresponding relationship corresponds to a priority authorized spectrum mode or a priority unauthorized spectrum mode, and the UE1 can determine a second spectrum mode according to the service information of the first service and the corresponding relationship, where the second spectrum mode is a priority authorized spectrum mode or a priority unauthorized spectrum mode.

With reference to the example in table 1, the service information of the first service includes PQI =91, and then UE1 may determine the second spectrum mode as the preferred authorized spectrum mode according to PQI =91 and the corresponding relationship; or, in combination with the example in table 2, the service information of the first service includes video 2, so that UE1 may determine that the second spectrum mode is the preferential unlicensed spectrum mode according to the video 2 and the corresponding relationship; or, in combination with the example in table 3, the service information of the first service includes the flow description 4, so that the UE1 may determine that the second spectrum mode is the priority authorized spectrum mode according to the flow description 4 and the corresponding relationship.

Further, the UE1 may determine the first spectrum mode according to the second spectrum mode and the first information.

Wherein the first information may include at least one of the following (a) to (d):

(a) Usage status of licensed spectrum resources: may include usage and/or idleness of licensed spectrum resources;

(b) Usage status of unlicensed spectrum resources: may include usage and/or idleness of unlicensed spectrum resources;

(c) The proposed spectral approach: i.e. a spectrum mode proposed by a network device (such as RAN or core network device) to the UE1, wherein the proposed spectrum mode may be a licensed spectrum mode, an unlicensed spectrum mode, or one or more of a licensed spectrum mode and an unlicensed spectrum mode; or the like, or, alternatively,

(d) Licensed spectrum mode: or referred to as an allowed spectrum mode, that is, a licensed spectrum mode authorized or allowed to be used by the UE1 by a network device (such as RAN or core network device), where the licensed spectrum mode may be a licensed spectrum mode, an unlicensed spectrum mode, or one or more of a licensed spectrum mode and an unlicensed spectrum mode.

In this way, the UE1 may determine the first spectrum mode more flexibly and reasonably according to one or more of the usage state of the authorized spectrum resource, the usage state of the unlicensed spectrum resource, the suggested spectrum mode, and the authorized spectrum mode, in combination with the second spectrum mode.

Further, the UE may obtain the first information in two possible ways:

possibility 1, ue1 may receive first information from a network device.

Wherein the first information may include at least one of the following (a) to (d): the method includes (a) a usage state of a licensed spectrum resource, (b) a usage state of an unlicensed spectrum resource, (c) a proposed spectrum pattern, and (d) a licensed spectrum pattern.

Specifically, UE1 may receive first information from a network device. The first information may be acquired after the UE1 requests the network device, or the first information may be actively sent to the UE1 by the network device. The network device may be a RAN or a core network device, such as a PCF.

See in particular the following three examples:

example 1, ue1 may receive a suggested spectrum mode from a RAN. In one specific implementation, the RAN may determine the proposed spectrum mode according to the usage state of the licensed spectrum or the unlicensed spectrum resource in the serving cell of the UE1, and send the proposed spectrum mode to the UE1. For example, the RAN knows that, in the serving cell of the UE1, the vacancy rate of the authorized spectrum resource is less than or equal to the first vacancy rate threshold, and the RAN suggests the spectrum mode to the UE1 as an unlicensed spectrum mode; or, the RAN knows that the idle rate of the authorized spectrum resource in the serving cell of the UE1 is greater than the first idle rate threshold, and the spectrum mode proposed by the RAN to the UE1 is the authorized spectrum mode.

Example 2, UE1 may receive a usage status of licensed spectrum resources from the RAN, and/or UE1 may receive a usage status of unlicensed spectrum resources from the RAN.

Example 3, ue1 may receive a licensed spectrum mode from a RAN or core network device. It should be understood that the RAN or core network device may also indicate that the UE1 cannot use one or more spectrum manners, for example, the spectrum manner that the RAN authorizes the UE1 is a licensed spectrum manner, that is, the RAN indicates to the UE1 that the UE1 cannot use an unlicensed spectrum manner, or cannot use both a licensed spectrum manner and an unlicensed spectrum manner. In another implementation, the licensed spectrum scheme may be replaced by a forbidden or unlicensed spectrum scheme, and the licensed spectrum scheme is described as an example as follows.

Possibly 2, the ue1 may monitor the resources in the resource pool to obtain the first information.

Wherein the first information may include at least one of the following (a) or (b): (a) A usage state of licensed spectrum resources, (b) a usage state of unlicensed spectrum resources.

See in particular the following two examples:

example 1, ue1 may monitor licensed spectrum resources in a resource pool for usage and/or idleness of the licensed spectrum resources. For example, the resource pool includes a licensed spectrum resource of 10MHz, UE1 monitors that the licensed spectrum resource of 1MHz can be used or is idle, and UE1 determines that the usage rate of the licensed spectrum resource is 90% or the idle rate of the licensed spectrum resource is 10%.

Example 2, ue1 may monitor unlicensed spectrum resources in a resource pool to obtain a usage rate and/or a vacancy rate of the unlicensed spectrum resources. For example, the resource pool includes unlicensed spectrum resources of 50MHz, UE1 monitors that 10MHz of unlicensed spectrum resources are available or free, and UE1 determines that the usage rate of the unlicensed spectrum resources is 40% or the free rate of the unlicensed spectrum resources is 60%.

In this application, the UE1 determines the first spectrum mode according to the second spectrum mode and the first information, which includes at least the following examples:

example 1, when the second spectrum manner is the priority licensed spectrum manner and the vacancy rate of the licensed spectrum resource is greater than the first vacancy rate threshold, the UE1 determines that the first spectrum manner is the licensed spectrum manner.

Example 2, when the second spectrum method is the priority unlicensed spectrum method and the idle rate of the unlicensed spectrum resource is greater than the second idle rate threshold, the UE1 determines that the first spectrum method is the unlicensed spectrum method.

Example 3, if the second spectrum method is the priority licensed spectrum method and the proposed spectrum method is the licensed spectrum method, the UE1 determines that the first spectrum method is the licensed spectrum method.

Example 4, when the second spectrum scheme is the preferential unlicensed spectrum scheme and the proposed spectrum scheme is the unlicensed spectrum scheme, the UE1 determines that the first spectrum scheme is the unlicensed spectrum scheme.

Example 5, when the second spectrum method is the priority licensed spectrum method and the licensed spectrum method is the licensed spectrum method, the UE1 determines that the first spectrum method is the licensed spectrum method.

Example 6, when the second spectrum scheme is the prioritized unlicensed spectrum scheme and the licensed spectrum scheme is the unlicensed spectrum scheme, the UE1 determines that the first spectrum scheme is the unlicensed spectrum scheme.

Of course, there may be a case where the second spectrum mode conflicts with the first information in the present application, and see examples 7 to 9.

Example 7, the second spectrum scheme is a licensed spectrum scheme with priority, but in case the proposed spectrum scheme is an unlicensed spectrum scheme, the UE1 may compare the priority of the two, for example, the priority of the second spectrum scheme is higher than the priority of the proposed spectrum scheme, and then the UE1 may determine that the first spectrum scheme is a licensed spectrum scheme. Alternatively, based on the proposed spectrum approach, UE1 may determine that the first spectrum approach is an unlicensed spectrum approach.

In example 8, the second spectrum scheme is a preferentially licensed spectrum scheme, but the licensed spectrum scheme is an unlicensed spectrum scheme, and the UE1 may determine that the first spectrum scheme is the unlicensed spectrum scheme.

Example 9, in the case that the second spectrum mode is the preferential licensed spectrum mode but the vacancy rate of the licensed spectrum resource is less than or equal to the first vacancy rate threshold, the UE1 may determine that the first spectrum mode is the unlicensed spectrum mode.

It should be noted that examples 1 to 9 merely illustrate how the UE1 determines the first spectrum manner according to the second spectrum manner and the first information, and other implementation manners exist in the present application, and are not described herein again.

In this application, the ProSe layer of the UE1 may obtain the service information of the first service from the application layer, and obtain a corresponding relationship between the service information and the spectrum mode. The AS layer of UE1 may receive the first information from the RAN or the core network device, or monitor the unlicensed spectrum resources and/or the licensed spectrum resources in the resource pool to obtain the first information.

In a second specific implementation scenario, the determining of the first spectrum manner may be specifically implemented by a ProSe layer or an AS layer of the UE1, and reference may be made to the following three manners:

the method comprises the steps that a ProSe layer determines a second frequency spectrum mode according to service information and a corresponding relation of a first service; the AS layer acquires a second spectrum mode from the ProSe layer, and determines a first spectrum mode according to the second spectrum mode and the first information;

the ProSe layer determines a second spectrum mode according to the service information and the corresponding relation of the first service; the ProSe layer acquires first information from the AS layer, and determines a first spectrum mode according to the second spectrum mode and the first information;

the AS layer acquires the service information and the corresponding relation of the first service from the ProSe layer, and determines a second spectrum mode according to the service information and the corresponding relation of the first service; and the AS layer determines the first spectrum mode according to the second spectrum mode and the first information.

Optionally, in the second implementation scenario of the foregoing embodiment, after obtaining the service information of the first service, the UE1 may transmit the service data of the first service to the UE2 by using the first spectrum manner (without determining the first spectrum manner according to the service information of the first service). In this implementation scenario, the service information of the first service may be a service identifier of the first service, for example, the service identifier 1 is bound to an authorized spectrum manner, the service identifier 2 is bound to an unauthorized spectrum manner, and the service identifier 3 is bound to an authorized spectrum and an unauthorized spectrum manner. Thus, if the UE1 needs to send the service data of a certain service, the service data is directly transmitted to the UE2 according to the spectrum mode bound to the service, for example, the service identifier of the first service is the service identifier 1, and then the UE1 transmits the service data of the first service with the UE2 in the authorized spectrum mode.

Optionally, in a third implementation scenario of the foregoing embodiment, the method further includes: UE1 sends second information to UE 2; the second information is used for instructing the UE1 to transmit the service data of the first service in the first spectrum manner.

Based on the different information carried in the second information, there may be two possible examples as follows:

in the 1 st possible example, the second information includes an identifier of the first spectrum mode, the UE1 sends the second information and a service identifier of the first service to the UE2, and accordingly, the UE2 may transmit the service data of the first service in the first spectrum mode according to the identifier of the first spectrum mode included in the second information and the service identifier of the first service.

In the 2 nd possible example, the second information includes a service identifier of the first service and an identifier of the first spectrum mode, the UE1 sends the second information to the UE2, and accordingly, the UE2 may transmit the service data of the first service in the first spectrum mode according to the service identifier of the first service and the identifier of the first spectrum mode included in the second information.

The second information may be carried in a PC5 signaling message, which PC5 signaling message may be transmitted over the sidelink between UE1 and UE2. As explained in the 2 nd possible example:

the second information may be a notification message, which may be used to notify the UE2 to: the UE1 transmits service data of a first service with the UE2 in a first spectrum mode.

Alternatively, the second information may also be a request message, which may be used by UE1 to request UE2 to: whether the service data of the first service can be transmitted by the first spectrum mode. After receiving the request message, UE2 sends a response message, which may be an accept response or a reject response, to UE1.

Wherein the acceptance response may be used to instruct UE2 to accept the transmission of the service data with UE1 in the first spectrum manner; the reject response may be used to instruct UE2 to reject transmission of traffic data with UE1 in the first spectrum manner. For example, the response message may be 1 bit, for example, if the 1 bit takes a value of 1, the response message indicates an acceptance response, and if the 1 bit takes a value of 0, the response message indicates a rejection response. Illustratively, the request message or the response message may be a PC5 signaling message, the PC5 signaling message is transmitted through a sidelink between the UE1 and the UE2, the request message is a direct communication request (direct communication request) message, and the response message is a direct communication accept (direct communication accept) message.

In a possible manner, the UE2 may also determine a spectrum manner (which may be referred to as a third spectrum manner) for transmitting the service data of the first service according to the service information and the corresponding relationship of the first service. The UE2 may determine whether to transmit the service data of the first service with the UE1 in the first spectrum mode according to the third spectrum mode, the identifier of the first spectrum mode in the request message, and the service identifier of the first service, and then the UE2 sends a rejection response or an acceptance response to the UE1.

It can be understood here that the UE2 may also be preconfigured with a corresponding relationship between the service information and the spectrum mode, the corresponding relationship preconfigured in the UE2 may be the same as or different from the corresponding relationship preconfigured in the UE1, and correspondingly, the third spectrum mode determined by the UE2 may be the same as or different from the first spectrum mode indicated by the UE1. For example, the first spectrum mode determined by the UE1 is a licensed spectrum mode, and the third spectrum mode determined by the UE2 is also a licensed spectrum mode. UE1 sends a request message to UE2, UE2 determines that the third spectrum mode is the same as the first spectrum mode according to the first spectrum mode identification and the first service identification in the request message, and UE2 sends an acceptance response to UE1.

In addition, the response message sent by the UE2 to the UE1 may also include an identifier of a third spectrum mode, so that the UE2 may notify the UE1 that the current UE2 may transmit the service data of the first service with the UE1 in the third spectrum mode. For example, the first spectrum mode determined by the UE1 is a licensed spectrum mode, and the third spectrum mode determined by the UE2 is also a licensed spectrum mode. The UE1 may send a request message to the UE2, where the request message includes a service identifier of the first service and an identifier of the first spectrum mode, where the identifier of the first spectrum mode is used to indicate an authorized spectrum mode. After receiving the request message, the UE2 sends a response message to the UE1, where the response message includes a service identifier of the first service and an identifier of the third spectrum mode, and the identifier of the third spectrum mode is also used to indicate the authorized spectrum mode. Accordingly, the UE1 determines, according to the response message, that the UE2 can transmit the service data of the first service with the UE1 in the first spectrum manner (i.e., the authorized spectrum manner).

It should be added that, when the first spectrum mode is the unlicensed spectrum mode or the licensed spectrum mode and the unlicensed spectrum mode, the UE1 may send not only the second information to the UE2, but also information of the first unlicensed spectrum resource to the UE2, where the information of the first unlicensed spectrum resource may be used to instruct the UE1 and the UE2 to transmit the service data of the first service through the first unlicensed spectrum resource. Accordingly, after receiving the second information, UE2 may listen to the first unlicensed spectrum resource to receive the traffic data of the first traffic from UE1.

In this implementation manner, the unlicensed spectrum may include a plurality of unlicensed frequency bands, the UE1 may select one of the unlicensed frequency bands from the plurality of unlicensed frequency bands, and the UE1 sends an identifier or a number of the unlicensed frequency band to the UE2, where the unlicensed frequency band is a first unlicensed spectrum resource, and the identifier or the number of the unlicensed frequency band is information of the first unlicensed spectrum resource. For example, the unlicensed frequency spectrum includes an unlicensed frequency band 1 (e.g., 5.15GHz-5.35 GHz), and an unlicensed frequency band 2 (e.g., 5.725GHz-5.85 GHz), and UE1 may select the unlicensed frequency band 1 as a first unlicensed frequency spectrum resource, and then UE1 sends an identifier or a number of the unlicensed frequency band 1 to UE2.

In the process that the UE1 selects one of the unlicensed frequency bands from the plurality of unlicensed frequency bands, the UE1 may randomly select one of the plurality of unlicensed frequency bands; or the UE1 obtains the usage rate and/or the idle rate of the spectrum resource in each unlicensed frequency band, and selects one unlicensed frequency band with a relatively low usage rate or a relatively high idle rate from the usage rates and/or the idle rates. In another example, UE1 may further determine a resource location of a first unlicensed spectrum resource from a plurality of unlicensed bands of the unlicensed spectrum, and send the resource location of the first unlicensed spectrum resource to UE2. In addition, UE1 may also send information of the first unlicensed spectrum resource to UE2 without sending second information to UE2, and accordingly, UE2 receives service data of the first service from UE1 according to the information of the first unlicensed spectrum resource.

In this way, the UE2 can listen to only whether there is service data of the first service on the first unlicensed spectrum resource, without listening to all resources on the unlicensed spectrum, thereby contributing to reducing the energy consumption of the UE2.

In addition, the sidelink between UE1 and UE2 may include multiple QoS flows, and the traffic data transmitted between UE1 and UE2 may be carried in one QoS flow (which may be referred to as a first QoS flow) in the sidelink. In this case, the transmission of the service data of the first service between the UE1 and the UE2 by using the first spectrum manner may be understood as: and the UE1 and the UE2 adopt a first spectrum mode to transmit a first QoS flow in the sidelink, wherein the first QoS flow carries service data of a first service. In this way, a plurality of QoS flows between the UE1 and the UE2 may respectively carry service data corresponding to different service information, and the different QoS flows may correspond to different spectrum manners, thereby contributing to improving flexibility of service data transmission.

In this implementation, the UE1 may associate the first service to the first QoS flow according to the first spectrum mode and the spectrum mode corresponding to the first QoS flow, so that when the UE1 sends the service data of the first service to the UE2, the service data of the first service may be borne in the first QoS flow.

Wherein, UE1 associates the first service to the first QoS flow, and specifically there may be two possible ways as follows:

it is pre-explained that the QoS flow included in the sidelink of UE1 and UE2 may correspond to respective spectrum manners, for example, a certain QoS flow corresponds to a licensed spectrum manner, or corresponds to an unlicensed spectrum manner, or corresponds to a licensed spectrum and an unlicensed spectrum manner. The spectrum mode corresponding to the QoS flow indicates that the QoS flow is transmitted by using the spectrum mode. For example, if the spectrum mode corresponding to the QoS flow is a licensed spectrum mode, the QoS flow is transmitted by using the licensed spectrum mode.

In a first possible manner, the UE1 may determine whether a QoS flow corresponding to (or associated with) the first spectrum manner exists in the QoS flows included in the sidelink according to the first spectrum manner and spectrum manners respectively corresponding to the QoS flows in the sidelink. If yes, selecting QoS flow corresponding to the first spectrum mode as first QoS flow; and if the QoS flow does not exist, generating a new QoS flow according to the first frequency spectrum mode, wherein the new QoS flow corresponds to the first frequency spectrum mode and is the first QoS flow. UE1 then associates the first traffic to this first QoS flow.

In a second possible manner, UE1 may generate a first QoS flow according to the first spectrum manner, where the first QoS flow corresponds to (or is associated with) the first spectrum manner. UE1 then associates the first traffic to this first QoS flow.

In this application, the first QoS flow corresponds to the first spectrum mode, and there may be two examples as follows:

in an example, the frequency spectrum mode corresponding to the first QoS flow is the same as the first frequency spectrum mode, for example, the frequency spectrum mode corresponding to the first QoS flow is a licensed frequency spectrum mode, and the first frequency spectrum mode is also a licensed frequency spectrum mode; or the frequency spectrum mode corresponding to the first QoS flow is an unauthorized frequency spectrum mode, and the first frequency spectrum mode is also an unauthorized frequency spectrum mode; or, the spectrum manner corresponding to the first QoS flow is a licensed spectrum manner and an unlicensed spectrum manner, and the first spectrum manner is also a licensed spectrum manner and an unlicensed spectrum manner, and so on, the UE1 may determine that the first QoS flow corresponds to the first spectrum manner.

In another example, the spectrum manner corresponding to the first QoS flow includes a first spectrum manner, for example, the spectrum manner corresponding to the first QoS flow is an authorized spectrum manner and an unauthorized spectrum manner, and the first spectrum manner is an authorized spectrum manner; or the spectrum mode corresponding to the first QoS flow is an authorized spectrum mode and an unauthorized spectrum mode, the first spectrum mode is an unauthorized spectrum mode, and the UE1 may determine that the first QoS flow corresponds to the first spectrum mode.

It should be further noted that the first QoS flow not only corresponds to the first spectrum mode, but also needs to satisfy the PC5QoS parameters of the first service.

When the service information of the first service includes the PC5QoS parameter of the first service, the UE1 may first determine the first spectrum manner according to the PC5QoS parameter of the first service and the correspondence, and then select, from the sidelink, a QoS flow that corresponds to the first spectrum manner and satisfies the PC5QoS parameter of the first service, as the first QoS flow.

Further, the UE1 may associate services corresponding to the same PC5QoS parameter into the same QoS flow, and it can also be understood that if different services correspond to the same PC5QoS parameter, the different services may be associated into the same QoS flow, and the same QoS flow may carry service data corresponding to the different services, respectively.

When the service information of the first service includes the service type of the first service, the UE1 may first determine the first spectrum manner according to the service type of the first service and the correspondence, and then select, from the sidelink, a QoS flow that corresponds to the first spectrum manner and satisfies the PC5QoS parameter of the first service, as the first QoS flow.

Further, under the condition that different types of services correspond to the same PC5QoS parameter, the different types of services may also correspond to different first spectrum manners, that is, may be associated to different QoS flows, and it can also be understood that different services that can be associated to the same QoS flow need to have the same PC5QoS parameter and the same correspondence between the service type and the spectrum manner.

In this possible manner, the second information may include an identifier of the first spectrum manner, the UE1 sends the second information and an identifier of the first QoS flow to the UE2, and correspondingly, the UE2 may transmit the first QoS flow in the first spectrum manner according to the identifier of the first spectrum manner included in the second information and the identifier of the first QoS flow. Or, the second information includes an identifier of the first QoS flow and an identifier of the first spectrum mode, the UE1 sends the second information to the UE2, and accordingly, the UE2 may transmit the first QoS flow in the first spectrum mode according to the identifier of the first QoS flow and the identifier of the first spectrum mode included in the second information. Further, the first QoS flow may specifically be a PC5QoS flow.

Optionally, in step 502, the UE1 transmits service data of the first service with the UE2 in the first spectrum manner, specifically, the UE1 requests the RAN for a spectrum resource corresponding to the first spectrum manner, and then the UE1 sends the service data of the first service to the UE2 according to the requested spectrum resource; or, UE1 listens to and seizes the spectrum resource corresponding to the first spectrum mode, and then UE1 sends the service data of the first service to UE2 according to the spectrum resource that is listened to and seized. Accordingly, the UE2 may perform detection on the spectrum resource corresponding to the first spectrum mode to receive the service data of the first service from the UE1. The following examples illustrate two implementations of UE1 using the first spectrum method and UE2 transmitting the service data of the first service:

in implementation 1, when the first spectrum mode is an authorized spectrum mode, UE1 sends resource request information to RAN, where the resource request information is used to request authorized spectrum resources for transmitting service data of the first service between UE1 and UE2. Correspondingly, the RAN allocates the authorized spectrum resource to the UE1 according to the resource request information, and indicates the resource location (e.g., time-frequency resource location information) of the authorized spectrum resource to the UE1. And the UE1 sends the service data of the first service to the UE2 on the authorized spectrum resource corresponding to the resource position. In this implementation, if the UE1 fails to request the RAN for the authorized spectrum resources, the RAN may further allocate the unlicensed spectrum resources to the UE1, and the UE1 transmits the service data of the first service with the UE2 based on the unlicensed spectrum resources allocated by the RAN.

In implementation mode 2, when the first spectrum mode is the unlicensed spectrum mode, UE1 listens to the unlicensed spectrum resources in the preemption resource pool, and determines the resource location of the unlicensed spectrum resources for transmitting the service data of the first service. And the UE1 and the UE2 transmit the service data of the first service on the unauthorized frequency spectrum resource corresponding to the resource position.

Optionally, before step 502, the UE1 may also send the PC5QoS parameters and link information to the RAN, where the link information is, for example, a PC5 link identification or a destination layer 2 identification. RAN sends AS layer configuration to UE1 according to PC5QoS parameter and link information. Specifically, the RAN authorizes the PC5QoS parameter provided by the UE according to the authorized PC5QoS parameter acquired from the PCF, and sends the PC5QoS parameter and the AS layer configuration corresponding to the link information to the UE1 after the authorization is passed. In this step, UE1 may further send an identifier of the first spectrum mode to RAN, and RAN determines whether to reserve authorized spectrum resources or unauthorized spectrum resources for UE1 and UE2 to transmit the service data of the first service according to the identifier of the first spectrum mode.

To better explain the embodiment of the present application, fig. 6 is an implementation manner of UE1 and UE2 transmitting service data of a first service in a specific application scenario exemplarily provided by the present application.

In step 601, ue1 sends 5G proximity services capability to the PCF. Specifically, UE1 sends the 5G proximity services capability to the PCF via the AMF in the registration procedure.

Step 602, pcf sends the correspondence between service information and spectrum mode to UE1. Specifically, the PCF sends the correspondence between the service information and the spectrum mode to the UE1 through the AMF.

In step 603, the ran broadcasts the first information. Correspondingly, UE1 receives the first information. This step can also be replaced by: UE1 requests the first information from RAN, and RAN sends the first information to UE1.

Step 604, ue1 determines the first spectrum mode according to the service information of the first service.

Illustratively, the UE1 determines the first spectrum mode according to the correspondence between the service information and the spectrum mode and the service information of the first service.

For another example, the UE1 determines the second spectrum mode according to the corresponding relationship between the service information and the spectrum mode and the service information of the first service; and the UE1 determines the first spectrum mode according to the second spectrum mode and the first information.

Step 605, UE1 sends a request message to UE2, where the request message includes an identifier of the first QoS flow and an identifier of the first spectrum mode.

And step 606, the UE2 responds to the request message of the UE1 and sends a response message to the UE1, wherein the response message comprises the identifier of the first QoS flow and the identifier of the first frequency spectrum mode. It is understood that the response message is used to indicate that UE2 accepts to transmit the first QoS flow with UE1 via the first spectrum manner.

In step 607, ue1 sends an information report to RAN, where the information report includes an identifier of the first spectrum mode, a PC5QoS parameter, and link information, such as a PC5 link identifier or a destination layer 2 identifier. The RAN stores an identification of the first spectrum mode, PC5QoS parameters and link information.

Step 608, the RAN sends the AS layer configuration to UE1.

Step 609, UE1 transmits a first QoS flow with UE2 by using a first spectrum mode, where the first QoS flow carries service data of the first service.

It should be noted that step 603 is an optional step, and in the correspondence between the service information and the spectrum method, if the service information of the first service corresponds to the second spectrum method, the RAN may send the first information to the UE1.

In addition, in step 602, the PCF may further send the authorized spectrum mode of the UE1 to the UE1, specifically, in the correspondence relationship between the service information and the spectrum mode, if the service information of the first service corresponds to the second spectrum mode, the PCF may send the authorized spectrum mode of the UE1 to the UE1, where the authorized spectrum mode is the first information. The first information is used for the UE1 to determine the first spectrum means in step 604.

It should also be noted that what is not described in detail in fig. 6 can be referred to the description of the embodiment related to fig. 5.

Specifically, the contents not described in detail in step 601 can be referred to as described in step 501.

Details not described in detail in steps 602 to 604 may be referred to in the description of the related embodiment for determining the first spectrum pattern in step 502.

Details not described in detail in steps 605 and 606 can be found in the description of the related embodiment of negotiating the first spectrum mode between UE1 and UE2 in step 502.

The content not described in detail in steps 607 to 609 can refer to the description in the related embodiment that UE1 and UE2 transmit the service data of the first service in the first spectrum manner in step 502.

Based on different functions of the ProSe layer and the AS layer, fig. 7 to 9 are various implementations of the present application for UE1 and UE2 to transmit service data of the first service.

It should be noted that, in the various implementations shown in fig. 7 to fig. 9, mainly the ProSe layer and the AS layer in UE1 are explained, UE2 may also include the ProSe layer and the AS layer (not shown in the figures), and the interaction between the ProSe layer and the AS layer in UE2 may be referred to the interaction between the ProSe layer and the AS layer in UE1.

For convenience of description, the ProSe layer and the AS layer below may be understood AS both the ProSe layer and the AS layer of the UE1.

As in the flow exemplarily shown in fig. 7, the ProSe layer may determine the first spectrum pattern according to the service information of the first service.

In step 701, the as layer sends first information to the ProSe layer. Step 701 is an optional step, and when the first service information corresponds to the second spectrum manner, the AS layer may send the first information to the ProSe layer.

Step 702, the prose layer determines a first spectrum mode according to the service information of the first service.

In a specific example, the ProSe layer determines the first spectrum mode according to the correspondence between the service information of the first service and the first spectrum mode and the service information of the first service.

In another specific example, the ProSe layer determines the second spectrum mode according to the correspondence between the service information of the first service and the second spectrum mode and the service information of the first service; the ProSe layer further determines a first spectrum mode according to the second spectrum mode and the first information.

Step 703, the prose layer associates the first QoS flow with the first spectrum mode according to the service information of the first service and the first spectrum mode. And the ProSe layer sends the identifier of the first QoS flow and the identifier of the first spectrum mode to the AS layer.

And step 704, the AS layer correspondingly stores the identifier of the first QoS flow and the identifier of the first spectrum mode.

Step 705, the prose layer sends the service data of the first service and the identifier of the first QoS flow to the AS layer.

In step 706, the as layer determines the first spectrum mode according to the identifier of the first QoS flow.

And 707, the as layer transmits a first QoS flow with the UE2 through the first spectrum mode, where the first QoS flow carries service data of the first service.

It should be noted that the details not described in detail in the flow shown in fig. 7 can be referred to the description in the embodiment related to fig. 5.

Specifically, the content not described in detail in step 701 and step 702 can be referred to the description in the related embodiment of determining the first spectrum pattern in step 502.

Details not described in step 703 and step 704 may be found in the description of the related embodiment regarding the association of the first QoS flow and the first spectrum pattern by the UE1 in step 502.

Details not described in step 705 to step 707 may be referred to in step 502 regarding the description of the related embodiment in which UE1 and UE2 transmit the service data of the first service in the first spectrum manner.

In the technical scheme, the ProSe layer determines a first frequency spectrum mode according to the service information of the first service and sends an identifier of the first QoS flow and an identifier of the first frequency spectrum mode to the AS layer; and sending the service data of the first service and the identifier of the first QoS flow to the AS layer. Correspondingly, the AS layer may transmit a first QoS flow with the UE2 in the first spectrum manner, where the first QoS flow carries service data of the first service. Thus, the functional division of the ProSe layer and the AS layer is clear.

AS in the flow exemplarily shown in fig. 8, the AS layer may determine the first spectrum manner according to the service information of the first service.

Step 801, the prose layer sends first configuration information and second configuration information to the AS layer, where the first configuration information may include a QoS flow identifier and a PC5QoS parameter corresponding to the QoS flow identifier, and the second configuration information may include a correspondence between service information and a spectrum mode. The first configuration information and the second configuration information may be carried in the same message or in different messages.

Step 802, the prose layer sends service information of the first service to the AS layer.

And 803, the AS layer determines a first spectrum mode according to the service information of the first service.

In a specific example, the AS layer determines the first spectrum mode according to the corresponding relationship between the service information of the first service and the first spectrum mode and the service information of the first service.

In another specific example, the AS layer determines the second spectrum mode according to the corresponding relationship between the service information of the first service and the second spectrum mode and the service information of the first service; the AS layer further determines the first frequency spectrum mode according to the second frequency spectrum mode and the first information.

And step 804, the AS layer associates the first QoS flow with the first spectrum mode according to the service information of the first service and the first spectrum mode. And the AS layer correspondingly stores the identifier of the first QoS flow and the identifier of the first spectrum mode.

In step 805, the prose layer sends the AS layer the service data of the first service and the identifier of the first QoS flow.

In step 806, the as layer determines the first spectrum mode according to the identifier of the first QoS flow.

In step 807, the as layer transmits a first QoS flow with the UE2 in the first spectrum manner, where the first QoS flow carries service data of the first service.

It should be noted that details not described in detail in the flow shown in fig. 8 can be referred to the description in the embodiment related to fig. 5.

Specifically, the content not described in detail in steps 801 to 803 may be referred to the description in the related embodiment regarding the determination of the first spectrum pattern in step 502.

Details not described in detail in step 804 may be found in the description of the related embodiment regarding the association of the first QoS flow and the first spectrum pattern by the UE1 in step 502.

Details not described in step 805 to step 807 can be found in the description of the related embodiment in step 502, where UE1 and UE2 transmit the traffic data of the first service in the first spectrum manner.

In the above technical solution, the AS layer obtains the correspondence between the service information and the spectrum mode from the ProSe layer, and obtains the service information of the first service from the ProSe layer, and then the AS layer may determine the first spectrum mode according to the correspondence between the service information and the spectrum mode and the service information of the first service. As such, the ProSe layer does not need to participate in the spectrum-wise determination process.

AS in the exemplary flow shown in fig. 9, the ProSe layer may determine the second spectrum manner according to the service information of the first service, and the AS layer further determines the first spectrum manner according to the second spectrum manner and the first information.

In step 901, the prose layer sends first configuration information to the AS layer, where the first configuration information may include a QoS flow identifier and a PC5QoS parameter corresponding to the QoS flow identifier.

And step 902, the prose layer determines the second spectrum mode according to the corresponding relation between the service information of the first service and the second spectrum mode and the service information of the first service.

Step 903, the prose layer indicates the second spectrum mode to the AS layer.

And 904, the AS layer determines the first spectrum mode according to the second spectrum mode and the first information.

Step 905, the as layer associates the first QoS flow with the first spectrum mode according to the service information of the first service and the first spectrum mode. And the AS layer correspondingly stores the identifier of the first QoS flow and the identifier of the first spectrum mode.

Step 906, the prose layer sends the service data of the first service and the identification of the first QoS flow to the AS layer.

In step 907, the as layer determines a first spectrum mode according to the identifier of the first QoS flow.

And 908, the as layer transmits a first QoS flow with the UE2 through the first spectrum manner, where the first QoS flow carries service data of the first service.

It should be noted that the details not described in detail in the flow shown in fig. 9 can be referred to the description in the embodiment related to fig. 5.

Specifically, the content not described in detail in steps 901 to 904 can be referred to the description in the related embodiment of determining the first spectrum pattern in step 502.

Details not described in detail in step 905 may be found in the description of the related embodiment regarding the association of the first QoS flow and the first spectrum pattern by the UE1 in step 502.

Details not described in step 906 to step 908 can be found in the description of the related embodiment of step 502 regarding UE1 and UE2 transmitting the service data of the first service through the first spectrum manner.

In the above technical solution, the ProSe layer determines the second spectrum mode according to the service information of the first service, and the AS layer determines the first spectrum mode according to the second spectrum mode and the first information. AS such, the AS layer does not need to provide the first information to the ProSe layer.

Fig. 10 illustrates another communication method of the present application, in which UE1 may transmit service data of a first service in a first spectrum manner with UE2 according to a spectrum manner subscribed to by UE1, which is described in detail below.

And step 1001, the UE1 acquires the spectrum mode subscribed by the UE1.

The spectrum mode subscribed by the UE1 may include one or more of the following spectrum modes: a licensed spectrum mode, an unlicensed spectrum mode, a prioritized licensed spectrum mode, a prioritized unlicensed spectrum mode, or a licensed spectrum and unlicensed spectrum mode.

The spectrum mode subscribed to may also be understood as a licensed spectrum mode, that is, the spectrum mode that the UE1 may obtain the authorization from the network device to the UE1 (or the network device allows the UE1 to use).

Further, the UE1 may also obtain region information corresponding to a spectrum mode subscribed by the UE1, and it can be understood that the spectrum modes available for the UE in different regions are different, for example, the authorized spectrum mode corresponds to the region 1, and the UE1 uses the authorized spectrum mode in the region 1; the unlicensed spectrum mode corresponds to region 2, the ue1 uses the unlicensed spectrum mode in region 2, and so on.

In one possible approach, the spectrum approach to UE1 subscription may be that UE1 receives from the PCF. Illustratively, during the registration process, UE1 sends 5G proximity service capability to the AMF, which forwards the 5G proximity service capability to the PCF. The PCF sends the spectrum mode subscribed by UE1 to UE1 in response to the 5G proximity services capability. The spectrum mode subscribed by UE1 may be generated by PCF, or obtained by PCF from UDR or AF. In another implementation, the spectrum scheme subscribed to by UE1 may also be acquired by the UE from the UDM, or preconfigured by UE1. The UE1 may also obtain the area information corresponding to the spectrum mode subscribed by the UE1 through any one of the above modes, which is not described again.

And step 1002, the UE1 adopts a first frequency spectrum mode to transmit the service data of the first service with the UE2 according to the frequency spectrum mode signed by the UE1.

In the above technical solution, the UE1 and the UE2 may transmit the service data in a spectrum manner more suitable for the UE1 characteristics, which is beneficial to better transmit the service data and reasonably utilize the licensed spectrum and the unlicensed spectrum.

Optionally, in the implementation scenario 1 of the foregoing embodiment, the method further includes: the UE1 determines a first spectrum mode according to the spectrum mode subscribed by the UE1. This is illustrated in two cases as follows:

in case that UE1 subscribes to one spectrum approach:

if the UE1 signs a licensed spectrum mode, or signs an unlicensed spectrum mode, or signs a licensed spectrum mode and an unlicensed spectrum mode, the UE1 may determine the UE1 signs a spectrum mode as the first spectrum mode. For example, UE1 signs up for the licensed spectrum mode, UE1 may determine that the licensed spectrum mode is the first spectrum mode.

If the UE1 signs a subscription priority authorized spectrum mode or signs a subscription priority unauthorized spectrum mode (i.e., the second spectrum mode), the UE1 may determine the first spectrum mode according to the second spectrum mode and the first information. For example, the UE1 signs up for the priority authorized spectrum mode (i.e., the second spectrum mode), the vacancy rate of the authorized spectrum resource included in the first information is greater than the first vacancy rate threshold, and the UE1 may select the authorized spectrum mode (i.e., the first spectrum mode) according to the vacancy rate of the authorized spectrum resource and the priority authorized spectrum mode.

In the case where the UE1 subscribes to multiple spectrum systems:

the UE1 may determine the first spectrum mode from a plurality of spectrum modes subscribed to by the UE1. Specifically, there may be two examples as follows:

in an example, the UE1 may determine the first spectrum manner from a plurality of spectrum manners subscribed by the UE1 according to the first area information and the area information corresponding to the spectrum manner subscribed by the UE1. The first area information may be used to characterize the area where the UE1 is located. UE1 may determine the first area information according to the area where UE1 is located, or UE1 receives the first area information from the RAN. In this way, the UE1 can better determine the first spectrum mode adapted to the area where the UE1 is located.

Further, the region information corresponding to the spectrum manner may be of a cell granularity, and the region information corresponding to the spectrum manner may include one or more cells; or, the area information corresponding to the spectrum manner may also be of Tracking Area (TA) granularity, and the area information corresponding to the spectrum manner may include one or more TAs.

The first area information may be cell-granular, the first area information may be used to indicate in which cell the UE1 is; alternatively, the first area information may also be of TA granularity, and the first area information may be used to indicate in which TA the UE1 is.

For example, the UE1 may subscribe to multiple licensed spectrum mode, unlicensed spectrum mode, licensed spectrum mode, and unlicensed spectrum mode, for example, the licensed spectrum mode corresponds to TA #1, the unlicensed spectrum mode corresponds to TA #2, and the licensed spectrum mode and the unlicensed spectrum mode correspond to TA #3. The UE1 may determine the first region information according to the region where the UE1 is located, for example, the first region information is TA #1, and the UE1 may select the licensed spectrum manner (i.e., the first spectrum manner) according to the first region information (i.e., TA # 1) and the region information corresponding to the spectrum manner subscribed to by the UE1. For another example, if the first area information is the cell #1, and the cell #1 belongs to the TA #1, the UE1 may select the licensed spectrum scheme (i.e., the first spectrum scheme) according to the first area information (i.e., the cell # 1) and the area information corresponding to the spectrum scheme subscribed to by the UE1.

In the above example, the UE1 may further subscribe to a preferred licensed spectrum manner and a preferred unlicensed spectrum manner, for example, the preferred licensed spectrum manner corresponds to TA #4, the preferred unlicensed spectrum manner corresponds to TA #5, the UE1 may further determine first region information according to a region where the UE1 is located, for example, the first region information indicates TA #4, and the UE1 may select the preferred licensed spectrum manner (i.e., the second spectrum manner) according to the first region information and the region information corresponding to the spectrum manner subscribed by the UE1. In this case, the UE1 may further determine the first spectrum pattern according to the second spectrum pattern and the first information.

Certainly, the UE1 may further subscribe to one or more of a licensed spectrum manner, an unlicensed spectrum manner, a licensed spectrum manner, and an unlicensed spectrum manner, and one or more of a subscription priority licensed spectrum manner and a priority unlicensed spectrum manner, and the implementation manner in which the UE1 determines the first spectrum manner from the subscribed spectrum manner is similar to that described above.

In another example, the UE1 randomly determines a spectrum pattern from spectrum patterns subscribed to by the UE, where the determined spectrum pattern may be the first spectrum pattern or the second spectrum pattern. Under the condition that the determined spectrum mode is the second spectrum mode, the UE1 may further determine the first spectrum mode according to the second spectrum mode and the first information.

Then, UE1 may transmit the service data of the first service with UE2 by using the determined first spectrum manner.

Further, the ProSe layer of UE1 may obtain a spectrum scheme subscribed by UE1. The AS layer may receive the first information from the RAN or the core network device, or monitor the unlicensed spectrum resources and/or the licensed spectrum resources in the resource pool to obtain the first information.

The determining of the first spectrum manner may be specifically implemented by the ProSe layer or the AS layer of the UE1, and may refer to the following five manners:

the method comprises the steps that 1, a ProSe layer determines a first spectrum mode according to a spectrum mode signed by UE1, area information corresponding to the spectrum mode signed by the UE1 and first area information; the first area information may be received by the AS layer from the RAN, or the AS layer is determined according to the area where UE1 is located, and accordingly, the ProSe layer may obtain the first area information from the AS layer. Or in other examples, the first region information may be determined by the ProSe layer according to the region where the UE1 is located.

The method comprises the steps that a mode 2 is that an AS layer receives a spectrum mode signed by UE1 from a ProSe layer and area information corresponding to the spectrum mode signed by the UE1, and the AS layer determines a first spectrum mode according to the spectrum mode signed by the UE1, the area information corresponding to the spectrum mode signed by the UE1 and the first area information; wherein the first area information may be received by the AS layer from the RAN, or the AS layer is determined according to the area where the UE1 is located; or in other examples, the first area information may be determined by the ProSe layer according to the area where the UE1 is located, and accordingly, the first area information may be obtained by the AS layer from the ProSe layer.

Mode 3, the ProSe layer determines a second spectrum mode according to the spectrum mode signed by the UE 1; the AS layer receives a second spectrum mode from the ProSe layer and determines a first spectrum mode according to the second spectrum mode and the first information.

Mode 4, the ProSe layer determines a second spectrum mode according to the spectrum mode subscribed by the UE 1; and the ProSe layer receives the first information from the AS layer, and determines the first spectrum mode according to the second spectrum mode and the first information.

The mode 5, the AS layer receives a frequency spectrum mode signed by the UE1 from the ProSe layer, and the AS layer determines a second frequency spectrum mode according to the frequency spectrum mode signed by the UE 1; and the AS layer determines the first spectrum mode according to the second spectrum mode and the first information.

In this embodiment of the application, for the specific description of the first information, the UE1 obtaining the first information, and the UE1 determining the first spectrum manner according to the second spectrum manner and the first information, reference may be made to the description in the implementation manner for determining the first spectrum manner in step 502 above, and details are not repeated.

Optionally, in the implementation scenario of the second embodiment 2, if the UE1 signs a spectrum mode, and the signed spectrum mode is a licensed spectrum mode, an unlicensed spectrum mode, or a licensed spectrum mode and an unlicensed spectrum mode, the UE1 may directly transmit the service data of the first service with the UE2 by using the spectrum mode signed by the UE1.

Optionally, the method further includes: the UE1 sends second information to the UE2, where the second information is used to instruct the UE1 to transmit the service data of the first service in the first spectrum manner, which may be specifically described in step 502 with reference to the second information.

It should be added that, when the first spectrum manner is the unlicensed spectrum manner, or the first spectrum manner and the unlicensed spectrum manner are both used, the UE1 may send not only the second information to the UE2, but also send information of the first unlicensed spectrum resource to the UE2, which may specifically refer to the description about the information of the first unlicensed spectrum resource in step 502.

In addition, the UE1 may also bind the first spectrum mode with a sidelink between the UE1 and the UE2, that is, the UE1 and the UE2 transmit the service data of the first service through the sidelink, and the sidelink may occupy a spectrum resource corresponding to the first spectrum mode. In a specific implementation, the UE1 sends the second information to the UE2 through the sidelink between the UE1 and the UE2, where the second information includes an identifier of the first spectrum mode, and correspondingly, the UE2 may bind the sidelink between the UE1 and the UE2 with the first spectrum mode according to the identifier of the first spectrum mode included in the second information.

In the implementation of the present application, UE1 may transmit service data in the sidelink with UE2 through a spectrum resource corresponding to the first spectrum mode, and it can also be understood that the sidelink may include one or more QoS flows, and the one or more QoS flows may all be transmitted through the spectrum resource corresponding to the first spectrum mode.

To better explain the embodiment of the present application, fig. 11 is a diagram illustrating an implementation manner of transmitting service data of a first service by UE1 and UE2 in another specific application scenario provided by an example of the present application.

In step 1101, ue1 sends the 5G proximity services capability to the PCF. Specifically, UE1 sends the 5G proximity services capability to the PCF via the AMF in the registration procedure.

Step 1102, PCF sends UE1 signed spectrum mode and UE1 signed spectrum mode corresponding area information to UE1. Optionally, the PCF sends, to the UE1 through the AMF, area information corresponding to the spectrum mode subscribed to the UE1 and the spectrum mode subscribed to the UE1 in response to the 5G proximity service capability.

In step 1103, the ran broadcasts the first information. Accordingly, UE1 receives the first information. This step can also be replaced by: UE1 requests the first information from RAN, and RAN sends the first information to UE1.

And 1104, the UE1 determines a first spectrum mode according to the spectrum mode subscribed by the UE1 and the first area information.

For example, the UE1 determines the first spectrum mode according to the spectrum mode subscribed by the UE1, the area information corresponding to the spectrum mode subscribed by the UE1, and the first area information.

For another example, the UE1 determines the second spectrum mode according to the spectrum mode subscribed by the UE1, the area information corresponding to the spectrum mode subscribed by the UE1, and the first area information; the UE1 determines the first spectrum mode according to the second spectrum mode and the first information.

Step 1105, UE1 sends a request message to UE2 via the sidelink between UE1 and UE2, the request message including an identification of the first spectrum mode.

Step 1106, UE2 sends an accept response to UE1 in response to the request message of UE1.

Step 1107, ue1 sends an information report to RAN, where the information report includes the identifier of the first spectrum mode, the PC5QoS parameter and link information, such as the PC5 link identifier or the destination layer 2 identifier. The RAN stores an identification of the first spectrum mode, PC5QoS parameters and link information.

In step 1108, the RAN sends the AS layer configuration to UE1.

Step 1109, UE1 transmits service data of the first service with UE2 in the first spectrum manner.

It should be noted that step 1103 is an optional step, and in a case that the spectrum scheme subscribed to by UE1 includes one or more of a preferred licensed spectrum scheme and a preferred unlicensed spectrum scheme, UE1 may receive the first information from the RAN. This first information is used for the UE1 to determine the first spectral manner in step 1104.

It should also be noted that details not described in detail in fig. 11 can be referred to the description of the embodiment related to fig. 10.

Specifically, the contents not described in detail in step 1101 and step 1102 may be referred to as described in step 1001.

The details of step 1103 and step 1104 that are not described in detail can be referred to the descriptions in step 1002 regarding the related embodiment of determining the first spectrum manner.

Details not described in step 1105 and step 1106 may refer to the description in step 1002 in the related embodiment of negotiating the first spectrum manner between UE1 and UE2.

For the content not described in detail in step 1107 to step 1109, reference may be made to the description in the related embodiment in step 1002, where UE1 and UE2 transmit service data in the first spectrum manner.

Based on different functions of the ProSe layer and the AS layer, fig. 12 is an implementation manner of the present application for UE1 and UE2 to transmit service data of the first service. Fig. 12 mainly illustrates the ProSe layer and the AS layer in UE1, UE2 may also include the ProSe layer and the AS layer (not shown in the figure), and the interaction between the ProSe layer and the AS layer in UE2 can be referred to the interaction between the ProSe layer and the AS layer in UE1. For convenience of description, the ProSe layer and the AS layer below may be understood AS both the ProSe layer and the AS layer of the UE1.

As in the flow exemplarily shown in fig. 12, the ProSe layer may determine the first spectrum pattern according to the spectrum pattern subscribed by the UE1.

Step 1201, the as layer sends the first information to the ProSe layer. Step 1201 is an optional step.

Step 1202, the prose layer determines a first spectrum mode according to the spectrum mode subscribed by the UE1.

In a specific example, the ProSe layer determines the first spectrum mode according to a spectrum mode subscribed by the UE1.

In another specific example, the ProSe layer determines the second spectrum mode according to the spectrum mode subscribed by the UE 1; and the ProSe layer determines the first spectrum mode according to the second spectrum mode and the first information.

Wherein the ProSe layer may acquire the first area information from the AS layer.

Step 1203, the prose layer associates the sidelink between UE1 and UE2 with the first spectrum mode. The ProSe layer sends, to the AS layer, a first link identifier and an identifier of a first spectrum mode, where the first link identifier is used to identify a sidelink between the UE1 and the UE2, and the first link identifier is, for example, a PC5 link identifier or a destination layer 2identifier of the PC5 link.

And in step 1204, the AS layer correspondingly stores the first link identification and the identification of the first spectrum mode.

Step 1205, the prose layer sends the service data of the first service and the first link identifier to the AS layer.

And in step 1206, the AS layer determines a first spectrum mode according to the first link identifier.

Step 1207, the AS layer transmits the service data of the first service to the UE2 by the first spectrum mode, wherein the service data of the first service is carried on the sidelink between the UE1 and the UE2.

It should be noted that the details not described in detail in fig. 12 can be referred to the description of the embodiment related to fig. 10.

Specifically, the contents not described in detail in step 1201 and step 1202 can be referred to the description in the related embodiment of determining the first spectrum pattern in step 1002.

Details not described in step 1203 and step 1204 may be referred to the description in step 1002 in the related embodiment regarding the association of UE1 with the sidelink and the first spectrum pattern between UE1 and UE2.

Details not described in step 1205 to step 1207 may be referred to in the description of the related embodiment where UE1 and UE2 transmit traffic data in the first spectrum manner in step 1002.

In the above technical solution, the ProSe layer determines the first spectrum mode according to the spectrum mode subscribed by the UE1, and sends the first link identifier and the identifier of the first spectrum mode to the AS layer. Subsequently, the ProSe layer sends the service data of the first service and the first link identifier to the AS layer, and correspondingly, the AS layer may send the service data of the first service to the UE2 in the first spectrum manner, where the service data of the first service is carried on the side link between the UE1 and the UE2. Thus, the functional division of the ProSe layer and the AS layer is clear.

In addition, in the application, the AS layer may determine the first spectrum mode according to the spectrum mode subscribed by the UE1, or the ProSe layer may determine the second spectrum mode according to the spectrum mode subscribed by the UE1, the ProSe layer indicates the second spectrum mode to the AS layer, and then the AS layer determines the first spectrum mode according to the first spectrum mode and the first information. The implementation manners in fig. 12, fig. 8, or fig. 9 may be combined specifically, and are not described herein again.

Based on the above and the same concept, fig. 13 and 14 are schematic structural diagrams of a possible communication device provided by the present application. These communication apparatuses may be configured to implement the function of the first terminal device or the core network device in the foregoing method embodiment, so that the advantageous effects of the foregoing method embodiment may also be achieved.

In this application, the communication apparatus may be a terminal device, or a module (e.g. a chip) in the terminal device, and the communication apparatus is, for example, a UE in fig. 1. The communication device may also be a core network device, or a module (e.g., a chip) in the core network device, such as the PCF or UDM in fig. 1.

As shown in fig. 13, the communication apparatus 1300 includes a processing module 1301 and a transceiver module 1302.

When the communication apparatus 1300 is used to implement the functions of the first terminal device (such as UE 1) in the method embodiments shown in fig. 5 to 9:

in a possible implementation manner, the processing module 1301 is configured to obtain service information of the first service; the processing module 1301 is further configured to control the transceiver module 1302 to transmit service data of the first service in a first frequency spectrum manner according to the service information, where the service data of the first service is carried on a sidelink between the communication apparatus 1300 and the second terminal device, and the first frequency spectrum manner is a licensed frequency spectrum manner, an unlicensed frequency spectrum manner, or a licensed frequency spectrum manner and an unlicensed frequency spectrum manner.

In one possible implementation, the processing module 1301 is further configured to: and determining a first spectrum mode according to the service information.

In a possible implementation manner, the processing module 1301 is specifically configured to: and determining the first spectrum mode according to the corresponding relation between the service information and the first spectrum mode and the service information.

In a possible implementation manner, the processing module 1301 is specifically configured to: the control adjacent service layer determines a first frequency spectrum mode according to the corresponding relation between the service information and the first frequency spectrum mode and the service information; or the control access layer determines the first spectrum mode according to the corresponding relation between the service information and the first spectrum mode and the service information.

In a possible implementation manner, the processing module 1301 is specifically configured to: determining a second spectrum mode according to the corresponding relation between the service information and the second spectrum mode and the service information; determining a first spectrum mode according to the second spectrum mode and the first information; the second spectrum mode is a priority authorized spectrum mode or a priority unauthorized spectrum mode; the first information includes at least one of: a usage state of a licensed spectrum resource, a usage state of an unlicensed spectrum resource, a proposed spectrum mode, or a licensed spectrum mode.

In one possible implementation, the processing module 1301 is further configured to: one or more of the usage state of the licensed spectrum resource and the usage state of the unlicensed spectrum resource are obtained.

In one possible implementation, the processing module 1301 is further configured to: the control transceiving module 1302 receives the first information.

In a possible implementation manner, the processing module 1301 is specifically configured to: controlling the adjacent service layer to determine a second frequency spectrum mode according to the corresponding relation between the service information and the second frequency spectrum mode and the service information; the control access layer determines a first spectrum mode according to the second spectrum mode and the first information; or, the control adjacent service layer determines the second spectrum mode according to the corresponding relation between the service information and the second spectrum mode and the service information; controlling the adjacent service layer to determine a first spectrum mode according to the second spectrum mode and the first information; or, the control access layer determines the second spectrum mode according to the corresponding relation between the service information and the second spectrum mode and the service information; and the control access layer determines the first spectrum mode according to the second spectrum mode and the first information.

In one possible implementation, the processing module 1301 is further configured to: the transceiver module 1302 is controlled to send second information to the second terminal device; the second information is used to instruct the communication device 1300 to transmit the service data of the first service in the first spectrum manner.

In a possible implementation manner, when the first spectrum mode is an unlicensed spectrum mode, or a licensed spectrum and an unlicensed spectrum mode, the processing module 1301 is further configured to: determining a first unlicensed spectrum resource from the unlicensed spectrum resources, where the first unlicensed spectrum resource is used for transmitting service data of a first service between the communication apparatus 1300 and the second terminal device; the control transceiver module 1302 transmits information of the first unlicensed spectrum resource to the second terminal device.

In one possible implementation, the processing module 1301 is further configured to: and associating the first service to the first QoS flow according to the first spectrum mode and the spectrum mode corresponding to the first QoS flow.

In one possible implementation, the processing module 1301 is further configured to: and generating a first QoS flow according to the first spectrum mode.

When the communication apparatus 1300 is used to implement the functions of the first terminal device (such as UE 1) in the method embodiments shown in fig. 10 to 12:

in a possible implementation manner, the processing module 1301 is configured to obtain a spectrum scheme subscribed to by the communication apparatus 1300; the processing module 1301 is further configured to control the transceiver module 1302 to transmit service data of the first service in a first spectrum mode according to the spectrum mode subscribed by the communications apparatus 1300, where the service data of the first service is carried on a sidelink between the communications apparatus 1300 and the second terminal device, and the first spectrum mode is a licensed spectrum mode, an unlicensed spectrum mode, or a licensed spectrum and an unlicensed spectrum mode.

In one possible implementation, the spectrum scheme subscribed to by the communication device 1300 includes at least one of: a licensed spectrum mode, an unlicensed spectrum mode, a licensed spectrum and unlicensed spectrum mode, a preferred licensed spectrum mode, or a preferred unlicensed spectrum mode.

In one possible implementation, the processing module 1301 is further configured to: the first spectrum scheme is determined according to the spectrum scheme subscribed to by the communication apparatus 1300.

In a possible implementation manner, the processing module 1301 is specifically configured to: the first spectrum mode is determined according to the area information corresponding to the spectrum mode subscribed by the communication device 1300 and the first area information, wherein the first area information is used for representing the area where the communication device 1300 is located.

In a possible implementation manner, the processing module 1301 is specifically configured to: controlling the neighboring service layer to determine a first spectrum mode according to the area information corresponding to the spectrum mode subscribed by the communication device 1300 and the first area information; or the control access stratum determines the first spectrum mode according to the area information corresponding to the spectrum mode subscribed by the communication device 1300 and the first area information.

In a possible implementation manner, the processing module 1301 is specifically configured to: determining a second spectrum mode according to the spectrum mode subscribed by the communication device 1300; determining a first spectrum mode according to the first information and the second spectrum mode; the second spectrum mode is a priority authorized spectrum mode or a priority unauthorized spectrum mode; the first information includes at least one of: a usage status of a licensed spectrum resource, a usage status of an unlicensed spectrum resource, a proposed spectrum mode, or a licensed spectrum mode.

In one possible implementation, the processing module 1301 is further configured to: one or more of the usage state of the licensed spectrum resources and the usage state of the unlicensed spectrum resources are obtained.

In a possible implementation manner, the processing module 1301 is specifically configured to: controlling the adjacent service layer to determine a second spectrum mode according to the spectrum mode subscribed by the communication device 1300; the control access layer determines a first spectrum mode according to the second spectrum mode and the first information; or, the control neighboring service layer determines the second spectrum mode according to the spectrum mode subscribed by the communication device 1300; controlling the adjacent service layer to determine a first spectrum mode according to the second spectrum mode and the first information; or, the control access stratum determines the second spectrum mode according to the spectrum mode subscribed by the communication device 1300; and the control access layer determines the first spectrum mode according to the second spectrum mode and the first information.

In a possible implementation manner, in the case that the first spectrum manner is an unlicensed spectrum manner, or a licensed spectrum and an unlicensed spectrum manner, the processing module 1301 is further configured to: determining a first unlicensed spectrum resource from the unlicensed spectrum resources, where the first unlicensed spectrum resource is used for transmitting service data of a first service between the communication apparatus 1300 and the second terminal device; the control transceiver module 1302 transmits information of the first unlicensed spectrum resource to the second terminal device.

When the communication apparatus 1300 is used to implement the functions of the core network device (such as PCF) in the method embodiments shown in fig. 5 to fig. 9: in a possible implementation manner, the processing module 1301 is configured to acquire the service information and a spectrum manner corresponding to the service information, and control the transceiver module 1302 to send the service information and the spectrum manner corresponding to the service information to the first terminal device. In a possible implementation manner, the service information and the spectrum mode corresponding to the service information are used by the first terminal device to determine the first spectrum mode, where the first spectrum mode is a licensed spectrum mode, an unlicensed spectrum mode, or a licensed spectrum mode and an unlicensed spectrum mode.

When the communications apparatus 1300 is used to implement the functions of the core network device (such as PCF) in the method embodiments shown in fig. 10 to fig. 12: in a possible implementation manner, the processing module 1301 is configured to acquire a spectrum mode subscribed by the first terminal device, and control the transceiver module 1302 to send the spectrum mode subscribed by the first terminal device to the first terminal device. In a possible implementation manner, the spectrum mode subscribed by the first terminal device is used for the first terminal device to determine the first spectrum mode, where the first spectrum mode is a licensed spectrum mode, an unlicensed spectrum mode, or a licensed spectrum and an unlicensed spectrum mode.

As shown in fig. 14, which is a device 1400 provided in the embodiment of the present application, the device shown in fig. 14 may be implemented as a hardware circuit of the device shown in fig. 13. The apparatus may be adapted to the flow chart shown above, and perform the functions of the first terminal device or the second terminal device in the above method embodiment.

For ease of illustration, fig. 14 shows only the main components of the device.

Apparatus 1400 shown in fig. 14 comprises a communication interface 1410, a processor 1420, and a memory 1430, wherein memory 1430 is used to store program instructions and/or data. The processor 1420 may operate in conjunction with the memory 1430. Processor 1420 may execute program instructions stored in memory 1430. When the instructions or programs stored in the memory 1430 are executed, the processor 1420 is configured to perform the operations performed by the processing module 1301 in the above embodiments, and the communication interface 1410 is configured to perform the operations performed by the transceiver module 1302 in the above embodiments.

A memory 1430 is coupled to the processor 1420. The coupling in the embodiments of the present application is an indirect coupling or a communication connection between devices, units or modules, and may be an electrical, mechanical or other form for information interaction between the devices, units or modules. At least one of the memories 1430 may be included in the processor 1420.

In embodiments of the present application, the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface. In the embodiment of the present application, when the communication interface is a transceiver, the transceiver may include an independent receiver and an independent transmitter; a transceiver that integrates transceiving functions, or a communication interface may also be used.

The device 1400 may also include communication lines 1440. Wherein communication interface 1410, processor 1420 and memory 1430 may be interconnected by communication lines 1440; the communication line 1440 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication lines 1440 may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 14, but this is not intended to represent only one bus or type of bus.

Based on the foregoing and the same conception, embodiments of the present application provide a computer-readable storage medium, on which a computer program or instructions are stored, which, when executed, cause a computer to perform the method of the first terminal device (e.g., UE 1) in the method embodiments related to fig. 5 to 12 described above, or perform the method of the core network device (e.g., PCF) in the method embodiments related to fig. 5 to 12 described above.

Based on the foregoing and the same conception, embodiments of the present application provide a computer program product, which when read and executed by a computer, causes the computer to execute the method of the first terminal device (e.g., UE 1) in the method embodiments related to fig. 5 to 12 described above, or execute the method of the core network device (e.g., PCF) in the method embodiments related to fig. 5 to 12 described above.

Based on the foregoing and the same conception, an embodiment of the present application provides a communication system, where the communication system includes a core network device and a first terminal device, the first terminal device is configured to execute the method in the method embodiment related to fig. 5 to 9, and the core network device is configured to execute the method in the method embodiment related to fig. 5 to 9;

or, the first terminal device is configured to execute the method in the method embodiment related to fig. 10 to fig. 12, and the core network device is configured to execute the method in the method embodiment related to fig. 10 to fig. 12.

It is to be understood that the various numerical references referred to in the embodiments of the present application are merely for convenience of description and distinction and are not intended to limit the scope of the embodiments of the present application. The sequence numbers of the above processes do not mean the execution sequence, and the execution sequence of the processes should be determined by the functions and the inherent logic.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A method of communication, comprising:

the method comprises the steps that a first terminal device obtains service information of a first service;

and the first terminal equipment transmits the service data of the first service in a first frequency spectrum mode according to the service information, wherein the service data of the first service is borne on a side link between the first terminal equipment and a second terminal equipment, and the first frequency spectrum mode is a licensed frequency spectrum mode, an unlicensed frequency spectrum mode or a licensed frequency spectrum and unlicensed frequency spectrum mode.

2. The method of claim 1, wherein the traffic information comprises at least one of: the proximity service communication 5 quality of service PC5QoS parameter, service type, or service identification.

3. The method of claim 1 or 2, wherein the method further comprises:

and the first terminal equipment determines the first spectrum mode according to the service information.

4. The method of claim 3, wherein the determining, by the first terminal device, the first spectrum mode according to the service information comprises:

and the first terminal equipment determines the first spectrum mode according to the corresponding relation between the service information and the first spectrum mode and the service information.

5. The method of claim 4, wherein the determining, by the first terminal device, the first spectrum mode according to the correspondence between the service information and the first spectrum mode and the service information comprises:

the adjacent service layer of the first terminal equipment determines the first spectrum mode according to the corresponding relation between the service information and the first spectrum mode and the service information; or

And the access layer of the first terminal equipment determines the first spectrum mode according to the corresponding relation between the service information and the first spectrum mode and the service information.

6. The method of claim 3, wherein the determining, by the first terminal device, the first spectrum mode according to the service information comprises:

the first terminal equipment determines a second spectrum mode according to the corresponding relation between the service information and the second spectrum mode and the service information;

the first terminal equipment determines the first spectrum mode according to the second spectrum mode and the first information;

the second spectrum mode is a priority authorized spectrum mode or a priority unauthorized spectrum mode;

the first information includes at least one of: a usage state of a licensed spectrum resource, a usage state of an unlicensed spectrum resource, a proposed spectrum mode, or a licensed spectrum mode.

7. The method of claim 6, wherein the method further comprises:

the first terminal device obtains one or more of the usage state of the authorized spectrum resource and the usage state of the unauthorized spectrum resource.

8. The method of claim 6, wherein the method further comprises:

and the first terminal equipment receives the first information.

9. The method according to any one of claims 6 to 8, wherein the first terminal device determines a second spectrum mode according to a corresponding relationship between the service information and the second spectrum mode and the service information; the determining, by the first terminal device, the first spectrum mode according to the second spectrum mode and the first information includes:

the adjacent service layer of the first terminal equipment determines a second spectrum mode according to the corresponding relation between the service information and the second spectrum mode and the service information; the access layer of the first terminal device determines the first spectrum mode according to the second spectrum mode and the first information; or the like, or a combination thereof,

the adjacent service layer of the first terminal equipment determines a second frequency spectrum mode according to the corresponding relation between the service information and the second frequency spectrum mode and the service information; the adjacent service layer of the first terminal device determines the first spectrum mode according to the second spectrum mode and the first information; or the like, or a combination thereof,

the access layer of the first terminal equipment determines a second spectrum mode according to the corresponding relation between the service information and the second spectrum mode and the service information; and the access layer of the first terminal equipment determines the first spectrum mode according to the second spectrum mode and the first information.

10. The method of any of claims 1 to 9, further comprising:

the first terminal equipment sends second information to the second terminal equipment;

the second information is used for instructing the first terminal device to transmit the service data of the first service in the first spectrum mode.

11. The method according to any one of claims 1 to 10, wherein in case that the first spectrum mode is an unlicensed spectrum mode, or a licensed spectrum mode and an unlicensed spectrum mode, the method further comprises:

the first terminal device determines a first unlicensed spectrum resource from unlicensed spectrum resources, where the first unlicensed spectrum resource is used for transmitting service data of the first service between the first terminal device and the second terminal device;

and the first terminal equipment sends the information of the first unlicensed spectrum resource to the second terminal equipment.

12. The method according to any of claims 1 to 11, wherein traffic data of said first traffic is carried on a first quality of service, qoS, flow in said sidelink.

13. The method of claim 12, wherein the method further comprises:

and the first terminal equipment associates the first service to the first QoS flow according to the first spectrum mode and the spectrum mode corresponding to the first QoS flow.

14. The method of claim 12, wherein the method further comprises:

and the first terminal equipment generates the first QoS flow according to the first spectrum mode.

15. A method of communication, comprising:

a first terminal device acquires a frequency spectrum mode signed by the first terminal device;

the first terminal device transmits the service data of the first service in a first spectrum mode according to the spectrum mode signed by the first terminal device, the service data of the first service is carried on a side link between the first terminal device and a second terminal device, and the first spectrum mode is an authorized spectrum mode, an unauthorized spectrum mode or an authorized spectrum mode and an unauthorized spectrum mode.

16. The method of claim 15, wherein the spectrum mode subscribed to by the first terminal device comprises at least one of: a licensed spectrum mode, an unlicensed spectrum mode, a licensed spectrum and unlicensed spectrum mode, a preferentially licensed spectrum mode, or a preferentially unlicensed spectrum mode.

17. The method of claim 15 or 16, further comprising:

and the first terminal equipment determines the first spectrum mode according to the spectrum mode signed by the first terminal equipment.

18. The method of claim 17, wherein the determining, by the first terminal device, the first spectrum mode according to the spectrum mode subscribed by the first terminal device, comprises:

the first terminal device determines the first spectrum mode according to the area information corresponding to the spectrum mode signed by the first terminal device and the first area information, wherein the first area information is used for representing the area where the first terminal device is located.

19. The method of claim 18, wherein the determining, by the first terminal device, the first spectrum mode according to the area information corresponding to the spectrum mode subscribed by the first terminal device and the first area information, comprises:

the adjacent service layer of the first terminal equipment determines the first spectrum mode according to the area information corresponding to the spectrum mode signed by the first terminal equipment and the first area information; or

And the access layer of the first terminal equipment determines the first spectrum mode according to the area information corresponding to the spectrum mode signed by the first terminal equipment and the first area information.

20. The method of claim 17, wherein the determining, by the first terminal device, the first spectrum mode according to the spectrum mode subscribed by the first terminal device comprises:

the first terminal equipment determines a second frequency spectrum mode according to the frequency spectrum mode signed by the first terminal equipment;

the first terminal equipment determines the first spectrum mode according to the first information and the second spectrum mode;

the first information includes at least one of: a usage status of a licensed spectrum resource, a usage status of an unlicensed spectrum resource, a proposed spectrum mode, or a licensed spectrum mode.

21. The method of claim 20, wherein the method further comprises:

22. The method of claim 20, wherein the method further comprises:

and the first terminal equipment receives the first information.

23. The method according to any one of claims 20 to 22, wherein the first terminal device determines a second spectrum mode according to a spectrum mode subscribed by the first terminal device; the first terminal device determining the first spectrum mode according to the first information and the second spectrum mode, including:

the adjacent service layer of the first terminal equipment determines the second frequency spectrum mode according to the frequency spectrum mode signed by the first terminal equipment; the access layer of the first terminal device determines the first spectrum mode according to the second spectrum mode and the first information; or the like, or, alternatively,

the adjacent service layer of the first terminal equipment determines the second frequency spectrum mode according to the frequency spectrum mode signed by the first terminal equipment; the adjacent service layer of the first terminal device determines the first spectrum mode according to the second spectrum mode and the first information; or the like, or, alternatively,

the access layer of the first terminal equipment determines the second spectrum mode according to the spectrum mode signed by the first terminal equipment; and the access layer of the first terminal equipment determines the first spectrum mode according to the second spectrum mode and the first information.

24. The method of any of claims 15 to 23, further comprising:

25. The method according to any one of claims 15 to 24, wherein in case that the first spectrum mode is an unlicensed spectrum mode, or a licensed spectrum mode and an unlicensed spectrum mode, the method further comprises:

26. A communications apparatus comprising a processor and a memory, the memory being configured to store instructions, the processor being configured to execute the instructions stored in the memory to implement the method of any of claims 1 to 14 or the method of any of claims 15 to 25.

27. A computer-readable storage medium, having stored therein instructions which, when executed by a communication apparatus, carry out the method of any of claims 1 to 14 or the method of any of claims 15 to 25.