CN114698041B

CN114698041B - Wireless communication method and device

Info

Publication number: CN114698041B
Application number: CN202011635528.8A
Authority: CN
Inventors: 邢玮俊; 吴问付
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2024-05-14
Anticipated expiration: 2040-12-31
Also published as: WO2022143103A1; CN114698041A

Abstract

The embodiment of the application provides a wireless communication method, which comprises the following steps: the method comprises the steps that a first base station sends first information to a second base station, wherein the first information is used for PC5 interface communication of a first terminal before a process of switching from the first base station to the second base station; the first base station receives first PC5 resource information, wherein the first PC5 resource information is used for representing first PC5 resources, and the first PC5 resources are used for PC5 interface communication of the first terminal in the process of switching from the first base station to the second base station; the first base station transmits the first PC5 resource information to the first terminal. Based on the above scheme, the second base station can allocate the first PC5 resource for communication to the first terminal under the condition of acquiring the first information of the first terminal, so that the condition that the PC5 resource allocated by the second base station is unsuitable is avoided.

Description

Wireless communication method and device

Technical Field

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

Background

In order to enrich the functionality of mobile networks, mobile networks have increased support for V2X communications. With the development of the next generation mobile network, future V2X communication can support more application scenarios of internet of vehicles, including vehicle group, sensor expansion, remote driving, automatic driving enhancement, and the like. The V2X communication may employ two communication modes: V2X communication scheme of Uu interface and V2X communication based on PC5 interface. The V2X communication based on the PC5 interface uses a communication resource of the PC5 interface, which may also be referred to as a side link resource. The side link resources are allocated by the base station.

Currently, when a base station allocates side link resources for V2X UE, qoS requirement information of services of V2X UE cannot be known, and thus, it may happen that the allocated resources cannot meet communication requirements of V2X UE. In addition, due to the moving characteristics of the vehicle, cell handover may frequently occur during the driving of the vehicle, and thus a plurality of base stations are required to perform resource coordination to allocate side link resources for the V2X UE. Multiple cells may use side link resources of the same frequency band. Thus, the problem of frequent resource switching of the vehicle due to mobility can be avoided, and the communication signaling overhead of the side link is reduced. Therefore, in the switching process of the PC5 interface, a method is designed to realize side chain resource optimization.

Disclosure of Invention

The embodiment of the application provides a wireless communication method and a device thereof, which enable a second base station (target base station) to configure PC5 communication resources for a target cell for terminal equipment in advance in the process of switching base stations of the terminal equipment, so as to avoid the problem that PC5 communication requirements among the terminal equipment possibly cannot be met due to the fact that the target base station cannot acquire PC5 interface information of the terminal equipment, and PC5 resources allocated by the terminal equipment in the process of switching the target base station.

In a first aspect, the present application provides a method of wireless communication, the method comprising: the method comprises the steps that a first base station sends first information to a second base station, wherein the first information is used for PC5 interface communication of a first terminal before a process of switching from the first base station to the second base station; the first base station receives first PC5 resource information, wherein the first PC5 resource information is used for representing first PC5 resources, and the first PC5 resources are used for PC5 interface communication of the first terminal in the process of switching from the first base station to the second base station; the first base station transmits the first PC5 resource information to the first terminal.

Through the technical scheme, the first base station sends the PC5 interface information (including QoS information, SLRB configuration, physical layer channel resource information, communication mode and the like) of the first terminal to the second base station, so that the second base station can configure PC5 communication resources for a destination cell for the first terminal in advance in the switching process of the first terminal, and the problem that PC5 communication requirements among terminal devices may not be met due to PC5 resources distributed by the second base station after the switching is avoided.

With reference to the first aspect, in certain implementations of the first aspect, the first PC5 resource includes at least one PC5 resource for PC5 interface communication by the first terminal during a handoff from the first base station to the second base station.

Specifically, when the first PC5 resource includes only one PC5 resource for the first terminal to perform PC5 interface communication in the process of switching the base station, the resource is selected for communication; when the first PC5 resource comprises at least two PC5 resources for the first terminal to perform PC5 interface communication in the process of switching the base station, determining one PC5 resource to perform communication according to the quality, priority and other factors of each PC5 resource in the first PC5 resource. The specific determination method is not limited herein.

With reference to the first aspect, in certain implementations of the first aspect, the first information includes at least one of: PC5 QoS information, second PC5 resource information; wherein the second PC5 resource information is used to characterize a second PC5 resource, the second PC5 resource comprising at least one PC5 resource for PC5 interface communication by the first terminal prior to a procedure of switching from the first base station to the second base station.

With reference to the first aspect, in certain implementation manners of the first aspect, the first base station sends first information, including: the first base station sends a first request message to the second base station, wherein the first request message comprises the first information, and the first request message is used for requesting the first terminal to be switched from the first base station to the second base station; the first base station receives first PC5 resource information, including: the first base station receives a first request response message from the second base station, the first request response message including the first PC5 resource information.

With reference to the first aspect, in certain implementation manners of the first aspect, the first base station sends first information, including: the first base station sending a second request message to an access and mobility management node, the second request message comprising the first information, the second request message being for requesting handover of the first terminal from the first base station to the second base station; the first base station receives first PC5 resource information, including: the first base station receives the second request response message from the access and mobility management node, the second request response message including the first PC5 resource information.

Through the technical scheme, the second base station can obtain the first information sent by the first base station through the forwarding of the first information between the first base station and the second base station by the access and mobility management node, and corresponding PC5 communication resources are prepared for the first terminal in advance.

With reference to the first aspect, in certain implementations of the first aspect, the first base station receives the first information from the first terminal.

With reference to the first aspect, in some implementations of the first aspect, the first base station sends indication information to the first terminal, where the indication information is used to indicate reporting the first information.

In a second aspect, there is provided a method of wireless communication, the method comprising: the second base station receives first information, wherein the first information is used for PC5 interface communication of the first terminal before the process of switching from the first base station to the second base station; and the second base station transmits first PC5 resource information according to the first information, wherein the first PC5 resource information is used for representing first PC5 resources, and the first PC5 resources are used for PC5 interface communication of the first terminal in the process of switching from the first base station to the second base station.

Through the technical scheme, the second base station receives the PC5 interface information (including QoS information, SLRB configuration, physical layer channel resource information, communication mode and the like) of the first terminal, so that the second base station can configure PC5 communication resources for a destination cell for the first terminal in advance in the switching process of the first terminal, and the problem that PC5 resources allocated by the second base station after switching possibly cannot meet the PC5 communication requirements among terminal devices is avoided.

With reference to the second aspect, in certain implementations of the second aspect, the first information includes at least one of: PC5QoS information, second PC5 resource information; wherein the second PC5 resource information is used to characterize a second PC5 resource, the second PC5 resource comprising at least one PC5 resource for PC5 interface communication by the first terminal prior to a procedure of switching from the first base station to the second base station.

With reference to the second aspect, in some implementations of the second aspect, the first PC5 resource includes at least one PC5 resource for PC5 interface communication by the first terminal during a handoff from the first base station to the second base station.

With reference to the second aspect, in some implementations of the second aspect, the second base station sends, according to the first information, first PC5 resource information, including: the second base station allocates the first PC5 resource to the first terminal according to the first information; the second base station transmits the first PC5 resource information.

By the scheme, the second base station allocates the first PC5 resource information to the first terminal under the condition that the second base station knows the first information of the first terminal, so that the problem that the PC5 resource information configured by the second base station for the first terminal is unsuitable can be avoided.

With reference to the second aspect, in some implementations of the second aspect, the first information includes the PC5 QoS information and the second PC5 resource information, and the second base station allocates the first PC5 resource to the first terminal according to the first information, including: the second base station determines third PC5 resource information according to the PC5 QoS information of the first terminal, wherein the third PC5 resource information is used for representing third PC5 resources; the second base station allocates the first PC5 resource to the first terminal according to the second PC5 resource information and the third PC5 resource, and the first PC5 resource is included in the second PC5 resource and the third PC5 resource.

It should be understood that the third PC5 resource information is PC5 resource information generated by the second base station according to the first information, and the first PC5 resource may be an intersection portion of the second PC5 resource information and the third PC5 resource information, or may be the third PC5 resource information and a portion of the second PC5 resource information, which is not limited herein.

With reference to the second aspect, in some implementations of the second aspect, the first information includes information of the second PC5 resource, and the second base station allocates the first PC5 resource to the first terminal according to the first information, including: the second base station allocates the first PC5 resource to the first terminal according to the second PC5 resource information, wherein the first PC5 resource is contained in the second PC5 resource.

With reference to the second aspect, in certain implementations of the second aspect, the second base station receives the first information, including: the second base station receives the first request information from the first base station, wherein the first request information comprises the first information, and the first request information is used for requesting the first terminal to be switched from the first base station to the second base station; the second base station sends first PC5 resource information according to the first information, and the method comprises the following steps: the second base station sends a first request response message to the first base station according to the first information, wherein the first request response message comprises the first PC5 resource information.

With reference to the second aspect, in certain implementations of the second aspect, the second base station receives the first information, including: the second base station receiving a second request message from an access and mobility management node, the second request message comprising the first information, the second request message requesting handover of the first terminal from the first base station to the second base station; the second base station sends first PC5 resource information according to the first information, and the method comprises the following steps: the second base station sends a second request response message to the access and mobility management node according to the first information, the second request response message including the first PC5 resource information.

With reference to the second aspect, in certain implementations of the second aspect, the second base station receives the PC5 QoS information from the first terminal, the PC5 QoS information being used for PC5 interface communication by the first terminal prior to a procedure of switching from the first base station to the second base station; and the second base station sends fourth PC5 resource information to the first terminal according to the PC5 QoS information, wherein the fourth PC5 resource information is used for representing fourth PC5 resources, and the fourth PC5 resource information is used for PC5 interface communication of the first terminal after the process of switching from the first base station to the second base station.

With reference to the second aspect, in some implementations of the second aspect, the fourth PC5 resource includes at least one PC5 resource for PC5 interface communication of the first terminal after a procedure of handover from the first base station to the second base station.

With reference to the second aspect, in some implementations of the second aspect, the fourth PC5 resource includes the first PC5 resource.

In a third aspect, a method of wireless communication is provided, the method comprising: the method comprises the steps that a first terminal receives first PC5 resource information from a first base station, wherein the first PC5 resource information is used for representing first PC5 resources, and the first PC5 resources are used for PC5 interface communication of the first terminal in the process of switching from the first base station to a second base station; and the first terminal performs PC5 interface communication in the process of switching from the first base station to the second base station according to the first PC5 resource information.

By the technical scheme, the first terminal receives the first PC5 resource information sent by the first base station, wherein the PC5 resource information is PC5 communication resources for the destination cell, which are configured for the first terminal by the second base station according to the PC5 interface information (including QoS information, SLRB configuration, physical layer channel resource information, communication mode and the like) of the first terminal, so that the problem that PC5 resources allocated by the second base station after switching possibly cannot meet the PC5 communication requirements among terminal devices is avoided.

With reference to the third aspect, in some implementations of the third aspect, when the first PC5 resource includes at least two PC5 resources for the first terminal to perform PC5 interface communication during handover from the first base station to the second base station, the first terminal performs PC5 interface communication during handover from the first base station to the second base station according to the first PC5 resource information, including: the first terminal selects one PC5 resource from the first PC5 resources; the first terminal uses the selected one of the PC5 resources to perform PC5 interface communications during a handoff from the first base station to the second base station.

With reference to the third aspect, in some implementations of the third aspect, the first terminal sends first information to the first base station, the first information being used for PC5 interface communication by the first terminal prior to a procedure of switching from the first base station to the second base station.

With reference to the third aspect, in some implementations of the third aspect, the first terminal receives indication information from the first base station, where the indication information is used to indicate reporting the first information.

With reference to the third aspect, in some implementations of the third aspect, the first terminal sends target resource information to the second terminal, where the target resource information is used to characterize the selected one PC5 resource.

With reference to the third aspect, in some implementations of the third aspect, the first terminal sends PC5QoS information to the second base station, the PC5QoS information being used for PC5 interface communication by the first terminal prior to a procedure of switching from the first base station to the second base station; the first terminal receives fourth PC5 resource information from the second base station, the fourth PC5 resource information being used to characterize a fourth PC5 resource, the fourth PC5 resource information being used for PC5 interface communication by the first terminal after a handoff procedure from the first base station to the second base station.

With reference to the third aspect, in some implementations of the third aspect, the fourth PC5 resource includes at least one PC5 resource for PC5 interface communication by the first terminal after a procedure of handover from the first base station to the second base station.

Specifically, when the fourth PC5 resource includes only one PC5 resource for PC5 interface communication after the first terminal completes switching base stations, then selecting the resource for communication; when the fourth PC5 resource includes at least two PC5 resources for the first terminal to perform PC5 interface communication after completing the base station handover, determining one PC5 resource to perform communication according to the quality, priority, and other factors of each PC5 resource in the fourth PC5 resource. The specific determination method is not limited herein.

With reference to the third aspect, in some implementations of the third aspect, the fourth PC5 resource includes the first PC5 resource.

In a fourth aspect, an apparatus for wireless communication is provided, the apparatus comprising:

A transmitting module for transmitting first information to a second base station, the first information being used for PC5 interface communication by a first terminal before a procedure of switching from the first base station to the second base station; the receiving module is used for receiving first PC5 resource information, the first PC5 resource information is used for representing first PC5 resources, and the first PC5 resources are used for PC5 interface communication of the first terminal in the process of switching from the first base station to the second base station; the sending module is further configured to send the first PC5 resource information to the first terminal.

Based on the beneficial effects of the above solution, reference may be made to the corresponding description of the first aspect, and for brevity, the disclosure is not repeated here.

With reference to the fourth aspect, in some implementations of the fourth aspect, the first PC5 resource includes at least one PC5 resource for PC5 interface communication by the first terminal during a handoff from the first base station to the second base station.

With reference to the fourth aspect, in certain implementations of the fourth aspect, the first information includes at least one of: PC5 QoS information, second PC5 resource information; wherein the second PC5 resource information is used to characterize a second PC5 resource, the second PC5 resource comprising at least one PC5 resource for PC5 interface communication by the first terminal prior to a procedure of switching from the first base station to the second base station.

With reference to the fourth aspect, in some implementations of the fourth aspect, the sending module is specifically configured to: transmitting a first request message to the second base station, the first request message including the first information, the first request message being for requesting handover of the first terminal from the first base station to the second base station; a first request response message is received from the second base station, the first request response message including the first PC5 resource information.

With reference to the fourth aspect, in some implementations of the fourth aspect, the sending module is further specifically configured to: transmitting a second request message to the access and mobility management node, the second request message including the first information, the second request message being for requesting handover of the first terminal from the first base station to the second base station; the second request response message is received from the access and mobility management node, the second request response message comprising the first PC5 resource information.

With reference to the fourth aspect, in some implementations of the fourth aspect, the receiving module is further specifically configured to: the first information is received from the first terminal.

With reference to the fourth aspect, in some implementations of the fourth aspect, the sending module is further specifically configured to: and sending indication information to the first terminal, wherein the indication information is used for indicating reporting the first information.

In a fifth aspect, an apparatus for wireless communication is provided, the apparatus comprising: a receiving module for receiving first information for a first terminal to perform PC5 interface communication before a procedure of switching from a first base station to the second base station; and the sending module is used for sending first PC5 resource information according to the first information, the first PC5 resource information is used for representing first PC5 resources, and the first PC5 resources are used for PC5 interface communication of the first terminal in the process of switching from the first base station to the second base station.

Based on the beneficial effects of the above solution, reference may be made to the corresponding description of the second aspect, and for brevity, the disclosure is not repeated here.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the first information includes at least one of: PC5QoS information, second PC5 resource information; wherein the second PC5 resource information is used to characterize a second PC5 resource, the second PC5 resource comprising at least one PC5 resource for PC5 interface communication by the first terminal prior to a procedure of switching from the first base station to the second base station.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the first PC5 resource includes at least one PC5 resource for PC5 interface communication by the first terminal during a handoff from the first base station to the second base station.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the apparatus further includes: the processing module is used for distributing the first PC5 resource to the first terminal according to the first information; the sending module is further configured to send the first PC5 resource information.

With reference to the fifth aspect, in certain implementation manners of the fifth aspect, the processing module is further configured to determine third PC5 resource information according to the PC5 QoS information, where the third PC5 resource information is used to characterize a third PC5 resource; and allocating the first PC5 resource to the first terminal according to the second PC5 resource information and the third PC5 resource, wherein the first PC5 resource is contained in the second PC5 resource and the third PC5 resource.

With reference to the fifth aspect, in some implementations of the fifth aspect, the processing module is further configured to allocate the first PC5 resource to the first terminal according to the second PC5 resource information, where the first PC5 resource is included in the second PC5 resource.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the receiving module is further configured to: receiving the first request message from the first base station, the first request message including the first information, the first request message being for requesting handover of the first terminal from the first base station to the second base station; the sending module is further configured to send a first request response message to the first base station according to the first information, where the first request response message includes the first PC5 resource information.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the receiving module is further configured to: receiving a second request message from an access and mobility management node, the second request message comprising the first information, the second request message being for requesting handover of the first terminal from the first base station to the second base station; the sending module is further configured to send a first request response message to the first base station according to the first information, where the first request response message includes the first PC5 resource information.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the receiving module is further configured to: receiving the PC5 QoS information from the first terminal, the PC5 QoS information being used for PC5 interface communication by the first terminal prior to a procedure of switching from the first base station to the second base station; the sending module is further configured to send, to the first terminal, fourth PC5 resource information according to the PC5 QoS information, where the fourth PC5 resource information is used to characterize a fourth PC5 resource, and the fourth PC5 resource information is used for PC5 interface communication after the first terminal performs a handoff procedure from the first base station to the second base station.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the fourth PC5 resource includes at least one PC5 resource for PC5 interface communication of the first terminal after a procedure of handover from the first base station to the second base station.

With reference to the fifth aspect, in some implementations of the fifth aspect, the fourth PC5 resource includes the first PC5 resource.

In a sixth aspect, an apparatus for wireless communication is provided, the apparatus comprising:

The receiving module is used for receiving first PC5 resource information from a first base station, wherein the first PC5 resource information is used for representing first PC5 resources, and the first PC5 resources are used for PC5 interface communication of the first terminal in the process of switching from the first base station to a second base station.

Based on the beneficial effects of the above solution, reference may be made to the corresponding description of the third aspect, and for brevity, the disclosure is not repeated here.

With reference to the sixth aspect, in certain implementation manners of the sixth aspect, when the first PC5 resource includes at least two PC5 resources for the first terminal to perform PC5 interface communication during a handoff from the first base station to the second base station, the apparatus further includes: the processing module is used for selecting one PC5 resource from the first PC5 resources; using the selected one of the PC5 resources, PC5 interface communication is conducted during a handoff from the first base station to the second base station.

With reference to the sixth aspect, in some implementations of the sixth aspect, the sending module is specifically configured to: first information is transmitted to the first base station, the first information being for PC5 interface communication by the first terminal prior to a handoff procedure from the first base station to the second base station.

With reference to the sixth aspect, in certain implementation manners of the sixth aspect, the receiving module is further specifically configured to: and receiving indication information from the first base station, wherein the indication information is used for indicating reporting the first information.

With reference to the sixth aspect, in some implementations of the sixth aspect, the sending module is further specifically configured to: transmitting target resource information to the second terminal, the target resource information being used to characterize the selected one of the PC5 resources

With reference to the sixth aspect, in certain implementation manners of the sixth aspect, the sending module is further specifically configured to send PC5 QoS information to the second base station, where the PC5 QoS information is used for PC5 interface communication by the first terminal before a procedure of switching from the first base station to the second base station; the receiving module is further specifically configured to receive fourth PC5 resource information from the second base station, where the fourth PC5 resource information is used to characterize a fourth PC5 resource, and the fourth PC5 resource information is used for PC5 interface communication of the first terminal after a procedure of switching from the first base station to the second base station.

With reference to the sixth aspect, in some implementations of the sixth aspect, the fourth PC5 resource includes at least one PC5 resource for PC5 interface communication of the first terminal after a procedure of handover from the first base station to the second base station.

With reference to the sixth aspect, in some implementations of the sixth aspect, the fourth PC5 resource includes the first PC5 resource.

In a seventh aspect, a communication device is provided that includes a processor. The processor is coupled to the memory and operable to execute instructions in the memory to implement the communication method of the first aspect to the third aspect and any one of the possible implementation manners of the first aspect to the third aspect. Optionally, the communication device further comprises a memory. Optionally, the communication device further comprises a communication interface, and the processor is coupled with the communication interface, and the communication interface is used for inputting and/or outputting information. The information includes at least one of instructions and data.

In one implementation, the communication device is a terminal device. When the communication device is a terminal device, the communication interface may be a transceiver, or an input/output interface.

In another implementation, the communication device is a chip or a system-on-chip. When the communication device is a chip or a chip system, the communication interface may be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin, or related circuits on the chip or the chip system. The processor may also be embodied as processing circuitry or logic circuitry.

In another implementation, the communication device is a chip or a system of chips configured in a terminal device.

Alternatively, the transceiver may be a transceiver circuit. Alternatively, the input/output interface may be an input/output circuit.

In an eighth aspect, a communications apparatus is provided that includes a processor. The processor is coupled to the memory and operable to execute instructions in the memory to implement the communication method of the first aspect to the third aspect and any one of the possible implementation manners of the first aspect to the third aspect. Optionally, the communication device further comprises a memory. Optionally, the communication device further comprises a communication interface, and the processor is coupled with the communication interface, and the communication interface is used for inputting and/or outputting information. The information includes at least one of instructions and data.

In one implementation, the communication apparatus is a network device. When the communication apparatus is a network device, the communication interface may be a transceiver, or an input/output interface.

In another implementation, the communication device is a chip or a system of chips configured in a network device.

A ninth aspect provides a computer readable storage medium having stored thereon a computer program which, when executed by a communication apparatus, causes the communication apparatus to implement the first to third aspects and the communication method in any possible implementation of the first to third aspects.

In a tenth aspect, there is provided a computer readable storage medium having stored thereon a computer program which, when executed by a communication apparatus, causes the communication apparatus to implement the first to third aspects and the communication method in any possible implementation of the first to third aspects.

In an eleventh aspect, there is provided a computer program product comprising instructions which, when executed by a computer, cause a communication apparatus to implement the communication method provided by the first to third aspects.

In a twelfth aspect, there is provided a computer program product comprising instructions which, when executed by a computer, cause a communication apparatus to implement the communication method provided by the first to third aspects.

In a thirteenth aspect, a communication system is provided, comprising the aforementioned network device and terminal device.

Drawings

Fig. 1 shows a schematic diagram of a 5g v2x communication system suitable for use in embodiments of the present application.

Fig. 2 shows a schematic diagram of a radio access side suitable for use in an embodiment of the application.

Fig. 3 shows a schematic flow chart of unicast communication suitable for use in embodiments of the present application.

Fig. 4 shows a schematic flow chart of a cell handover for a terminal device adapted for this embodiment.

Fig. 5 shows a schematic flow chart of a method 500 of wireless communication provided by an embodiment of the present application.

Fig. 6 shows a schematic flow chart of a method 600 of wireless communication provided by an embodiment of the present application.

Fig. 7 shows a schematic block diagram of a communication device according to an embodiment of the application.

Fig. 8 shows a schematic architecture diagram of a communication device according to an embodiment of the application.

Fig. 9 shows a schematic architecture diagram of a communication device according to an embodiment of the application.

Fig. 10 shows a schematic architecture diagram of a communication device according to an embodiment of the application.

Detailed Description

The technical scheme of the application will be described below with reference to the accompanying drawings.

The Fifth Generation (5G) mobile communication technology is New Radio (NR), which is a global 5G standard designed based on a New air interface of orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM), and is also a very important cellular mobile technology base of the next Generation, and services of the 5G technology are very diverse and can face to enhanced mobile broadband (Enhanced Mobile Broadband, eMBB) services, ultra-Low-latency Low-Latency Communication, URLLC) services, and large-scale machine communication (MASSIVE MACHINE-Type Communication, mMTC) services, where mMTC services can be, for example, industrial wireless sensor network (Industrial Wireless Sensor Network, IWSN) services, video monitoring (Video Surveillance) services, and wearable (Wearables) services.

The technical scheme of the embodiment of the application can be applied to various communication systems, such as: global system for mobile communications (Global System of Mobile communication, GSM), code division multiple access (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, general Packet Radio Service (GPRS), long term evolution (Long Term Evolution, LTE) system, LTE frequency division duplex (Frequency Division Duplex, FDD) system, LTE time division duplex (Time Division Duplex, TDD), universal mobile telecommunications system (Universal Mobile Telecommunication System, UMTS), worldwide interoperability for microwave access (Worldwide Interoperability for Microwave Access, wiMAX) communication system, future fifth generation (5th Generation,5G) system or New Radio (NR), etc.

Generally, the number of connections supported by the conventional Communication system is limited and easy to implement, however, with the development of Communication technology, the mobile Communication system will support not only conventional Communication but also, for example, device-to-Device (D2D) Communication, machine-to-machine (Machine to Machine, M2M) Communication, machine type Communication (MACHINE TYPE Communication, MTC), internet of vehicles (Vehicle To Everything, V2X) Communication, for example, vehicle-to-vehicle (Vehicle to Vehicle, V2V) Communication, vehicle-to-infrastructure (Vehicle to Infrastructure, V2I) Communication, vehicle-to-pedestrian (Vehicle to Pedestrian, V2P) Communication, lane network (Vehicle to Network, V2N) Communication.

The main execution body of the wireless communication method of the present application may be a terminal device or a network device.

The terminal device may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, or a User Equipment. The terminal device may be a station (Staion, ST) in a WLAN, may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a Personal digital assistant (Personal DIGITAL ASSISTANT, PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a car networking terminal, a computer, a laptop computer, a handheld communication device, a handheld computing device, a satellite radio, a wireless modem card, a television Set Top Box (STB), a customer premises equipment (customer premise equipment, CPE) and/or other devices for communicating over a wireless system as well as next generation communication systems, such as a terminal device in a 5G network or a terminal device in a future evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.

By way of example, and not limitation, in embodiments of the present application, the terminal device may also be a wearable device. The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wear by applying wearable technology and developing wearable devices, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: the intelligent watch or the intelligent glasses and the like and only focus on certain application functions, can be matched with other equipment such as a smart phone for use, such as various intelligent bracelets, intelligent jewelry and the like for physical sign monitoring.

In addition, in the embodiment of the application, the terminal equipment can also be terminal equipment in an internet of things (Internet of Things, ioT) system, and the IoT is an important component of the development of future information technology, and the main technical characteristics are that the object is connected with the network through a communication technology, so that the man-machine interconnection and the intelligent network of the internet of things are realized.

The network device may include an access network device or a core network device, among others.

The Access network device may be a device used for communication with the mobile device, such as an Access network device, and the Access network device may be an Access Point (AP) in a WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, or a gNB in a New Radio, NR, system, or an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or an Access Point, or a roadside unit (Roadside Unit, RSU), or a vehicle device, a wearable device, and an Access network device in a future 5G network, or an Access network device in a future evolved PLMN network, or the like.

In addition, in the embodiment of the present application, the access network device provides a service for a cell, where the terminal device communicates with the access network device through a transmission resource (for example, a time-frequency resource, a frequency resource, or a spectrum resource) used by the cell, where the cell may be a cell corresponding to the access network device (for example, a base station), and the cell may belong to a macro base station or may belong to a base station corresponding to a small cell (SMALL CELL), where the small cell may include: urban cells (Metro cells), micro cells (Micro cells), pico cells (Pico cells), femto cells (Femto cells) and the like, and the small cells have the characteristics of small coverage area and low transmitting power and are suitable for providing high-rate data transmission services.

The core network device may be connected to a plurality of access network devices for controlling the access network devices, and may distribute data received from a network side (e.g., the internet) to the access network devices.

The functions and specific implementations of the terminal device, the access network device and the core network device listed above are only exemplary, and the present application is not limited thereto.

The terminal device or network device may include a hardware layer, an operating system layer running above the hardware layer, and an application layer running above the operating system layer. The hardware layer includes hardware such as a central processing unit (Central Processing Unit, CPU) and a memory (also referred to as a main memory). The operating system may be any one or more computer operating systems that implement business processes through processes (processes), such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer comprises applications such as a browser, an address book, word processing software, instant messaging software and the like. In addition, the embodiment of the present application is not particularly limited to the specific structure of the execution body of the method, and for example, the execution body of the method provided in the embodiment of the present application may be a terminal device or a network device, or a functional module in the terminal device or the network device that can call a program and execute the program.

Furthermore, various aspects or features of embodiments of the application may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used herein encompasses a computer program accessible from any computer-readable device, carrier, or media. For example, computer-readable media may include, but are not limited to: magnetic storage devices (e.g., hard disk, floppy disk or tape, etc.), optical disks (e.g., compact Disk (CD), digital versatile disk (DIGITAL VERSATILE DISC, DVD), etc.), smart cards, and flash Memory devices (e.g., erasable programmable read-Only Memory (EPROM), card, stick, or key drive, etc.). Additionally, various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" can include, without being limited to, wireless channels and various other media capable of storing, containing, and/or carrying instruction(s) and/or data.

It should be noted that, in this case, the application program executing the communication method according to the embodiment of the present application may be a different application program from the application program for controlling the receiving device to complete the action corresponding to the received data.

In order to enrich the functionality of mobile cellular networks, 3GPP (Third Generation Partnership Project ) has joined support for V2X communications, mainly serving security-like application messaging in the internet of vehicles. With the development of the next generation 5G mobile network, future 5G v2x communication can support more application scenarios of internet of vehicles, including vehicle group, sensor expansion, remote driving and automatic driving enhancement, and the like.

Fig. 1 is a diagram of a 5g v2x communication system architecture suitable for use in embodiments of the present application. As shown in fig. 1, within the 5G core network ring is a 5G core network element, and different network elements are connected by using a service interface. The UE adopts a PC5 interface to directly communicate, and the UE and the base station adopt Uu interface to communicate. Fig. 2 is a wireless access side frame pattern. As shown in fig. 2, the interfaces between the access network element or device and the access and mobility management function (ACCESS AND mobility management function, AMF) and the communication between the AMF and the access network element or device are performed through an N2 interface, the communication between the access network element or device and the access network element or device is performed through an Xn interface, the access network element or device of the UE under the control of the same AMF is switched to an Xn switch (there is a possibility of not replacing the AMF), and the access network element or device of the UE under the control of a different AMF is switched to an N2 switch (there is a possibility of replacing the AMF).

The access and mobility management function is one of the core network functions of the 5G core network, and is logically interconnected with gNodeB through an NG interface, and is mainly used for implementing the access management function.

Before V2X side link communication, the terminal device may configure side link radio bearers (Sidelink Radio Bearers, SLRB) corresponding to the traffic characteristic parameters. The traffic characteristic parameters may include quality of service (Quality of Service, qoS), among others. In the LTE system, qoS of the UE packet is guaranteed by PPPP (ProSe PerPacket Priority, near field communication packet priority) and PPPR (ProSe PER PACKET Reliability), near field communication packet Reliability. For each data packet, the PPPP and the PPPR are determined by the application layer, the PPPP and the PPPR can be integers from 1 to 8, the higher the number is, the lower the requirements on priority and reliability are, and when the application layer submits the data packet to the bottom layer for transmission, the PPPP and the PPPR of the data packet are set. And the mapping of the data packet to SLRB is completed by the terminal, and the specific mapping rule is determined by the terminal.

QoS may refer to a network that can provide better service capability for specified network communication by using various basic technologies, which is a security mechanism of the network and is a technology for solving problems such as network delay and congestion, and QoS guarantee is very important for a network with limited capacity.

The data flow based QoS model is used for link unicast, multicast and broadcast. For a UE in a radio resource control (Radio resource control, RRC) connected state, for a new PC5 QoS data flow, the UE may report QoS information of the data flow through RRC dedicated signaling, and the network device may provide SLRB configuration and configure a correspondence between the data flow and SLRB through RRC dedicated signaling based on the QoS information reported by the UE. For RRC idle state UEs, the network device may provide SLRB configuration and configure the mapping of PC5 QoS to SLRB via V2X dedicated system message blocks (System Information Block, SIBs). For out-of-coverage UEs, the SLRB configuration and the mapping of PC5 QoS to SLRB are preconfigured.

In the 5G system, qoS of terminal data packets is based on a QoS flow mechanism with guaranteed bit rate (guaranteed bit rate, GBR) or non-guaranteed bit rate (non-guaranteed bit rate, non-GBR), and an SDAP (SERVICE DATA Adaptation Protocol ) layer is introduced for accomplishing mapping of QoS flows to RBs. The PC5 QoS flows are identified by a QoS flow identification number (PC 5 QoS flow Identification, PFI), which PC5 QoS flows can be mapped to Access Stratum (AS) SLRB. One or more PC5 QoS flows may map to the same SLRB, but one PC5 QoS flow may only map to one SLRB. The QoS characteristics of the data packets on the same PC5 QoS flow are the same, and the mapping of PC5 QoS to PC5 QoS flows is done by the terminal device.

In the 3gpp R14 and following R15 standards, V2X communication based on the PC5 communication interface only adopts a broadcast communication mode to send V2X messages, and a specific communication flow is as follows:

The application layer of the V2X UE sends the broadcast message Packet to the Access Stratum (AS) through the V2X layer along with its QoS requirements, the Priority (PPPP) and reliability (ProSe Per-Packet Reliability, PPPR) of the Packet. And the V2X UE transmits the PPPP and the PPPR information to the base station along with the PC5 communication resource application, and the base station allocates a resource pool for the V2X UE according to the PPPP and the PPPR information. The resource pool concept here is: a set of time domain or frequency radio resources that the UE may use.

Currently, 3GPP has established communication flows for three PC5 communication modes, i.e., unicast, multicast (or referred to as multicast) and broadcast, respectively, taking unicast communication as an example, fig. 3 is a schematic flow chart of unicast communication suitable for use in an embodiment of the present application. As shown in fig. 3, the specific steps are as follows:

s301, the terminal equipment requests service authorization and supply to the base station and the 5G core network.

Wherein the terminal device can use the PC5 QoS rules and the PC5 QoS configuration file for service authorization and provisioning, and the PC5 QoS configuration file of each PC5 QoS flow is provided for the terminal device.

S302, the terminal equipment sends the data to be sent and the corresponding QoS requirements thereof from the application layer to the V2X layer.

The application layer of the terminal device may send the data packet to be sent and the QoS requirement corresponding to the data packet to the V2X layer.

S303, the terminal equipment maps the QoS requirement of the application layer into specific QoS parameters.

The QoS parameters are selected according to the requirements of V2X application of the application layer on V2X communication, and specifically include: delay, packet loss, bandwidth and distance (Range). Wherein, unlike traditional cellular communication (communication between handset and base station), qoS parameters are added with distance parameters, such as standardized PQI (PC 5 5G QoS Identifier,PC5 5G quality of service identifier) and other parameters such as rate, and the distance refers to the minimum communication distance that can ensure that the receiving node meets other QoS requirements (i.e. other QoS parameter indexes besides Range parameters). The V2X layer allocates these packets into respective PC5 QoS flows according to pre-configured QoS rules, each PC5 QoS flow being identified by a PFI (PC 5 QoS Flow Identifier, PC5 quality of service flow identification).

And S304, the terminal equipment sends the data packet, the PFI corresponding to the data packet and the QoS parameter corresponding to the PFI to the AS layer.

The V2X layer may send the data packet, the PFI corresponding to the data packet, and the QoS parameter corresponding to the PFI to the AS layer.

S305, the terminal device applies for PC5 communication resources to the base station.

After the AS layer receives the data packet to be sent by the upper layer and the QoS parameters corresponding to the data packet, the terminal device may apply for radio resources to the base station, and may carry QoS configuration information (including PFI, PQI corresponding to QoS flow, and other QoS parameters). The base station performs SLRB (Sidelink Radio Bearer ) configuration for the terminal device according to the QoS parameters, and sends configuration information to the terminal device.

Fig. 4 is a schematic flow chart of a cell handover performed by the terminal device according to the present embodiment. As shown in fig. 4, the specific steps are as follows:

S401, the terminal equipment sends a measurement report to the source base station.

The terminal device periodically transmits a measurement report (including information such as quality and strength of a radio resource channel used by the terminal device) by the Xiang Yuanji stations in the communication process, and the source base station can determine whether to initiate a handover procedure of the terminal device according to the measurement report transmitted by the terminal device.

S402, the source base station sends a switching request to the target base station.

The selection of the target base station may be based on the location of the terminal device, or the base station with the strongest detected signal strength in the measurement report reported by the terminal device, or the base station with a lower load is selected for load balancing between base stations, etc., which is not limited herein.

S403, the target base station sends switching feedback to the source base station.

After receiving the feedback request, the target base station may feed back a handover request to the source base station.

S404, the terminal equipment sends RRC reconnection instruction to the target base station.

The source base station may also send information about the additional resource pool to the terminal device.

S405, the terminal equipment and the target base station perform switching operation.

After receiving the RRC reconnection instruction, the terminal device may perform a handover operation from the source base station to the target base station.

S406, the terminal equipment sends RRC connection completion indication information to the target base station.

The RRC connection complete indication information is used to indicate that the terminal device and the target base station have completed RRC connection. S407, the target base station sends the new resource pool to the terminal equipment.

After the terminal device completes the switching operation from the source base station to the target base station, the target base station may allocate a communication resource pool of the PC5 interface for use in the coverage area of the target base station to the terminal device, and send the new resource pool to the terminal device.

In the above-mentioned switching process, there are mainly two resource pool allocation steps:

1. optionally, the source base station sends an additional resource pool to the terminal equipment along with the switching instruction for use in the switching process;

2. After the handover is completed, the target base station transmits a communication resource pool for the PC5 interface of the cell to the terminal device.

In addition, when the source base station sends a handover request to the target base station, the following information may be carried: an X2 signaling message (X2 is an interface between 4G base stations and corresponds to an Xn interface of 5G) of the terminal device at the source base station, an S1 signaling message (S1 is an interface between the 4G base station and a mobile management entity or a service gateway and corresponds to an NG interface of 5G), a target base station identifier, security key information, an RRC message, E-RAB information (E-UTRAN Radio Access Bearer, radio access bearer, including network layer and transport layer address information and QoS configuration information), and the like. It can be found that only relevant information of communication between the UE and the base station, that is, information of Uu (interface between the terminal equipment and the UTRAN) interface (e.g., radio bearer information of E-RAB being Uu), is included in the information, and no relevant bearer information of the PC5 is included.

In summary, when the target base station sends the new resource configuration to the terminal device, the PC5 QoS requirement information (i.e., PC5 QoS Profile, PC5 QoS configuration) of the service used by the terminal device cannot be obtained. Therefore, when the target base station allocates communication resources of the PC5 for the terminal device, a case may occur in which the allocated resources cannot meet the communication requirements of the terminal device.

On the other hand, due to the characteristics of the movement of the vehicle, a situation in which a cell switch occurs frequently during the running of the vehicle may occur.

In view of the above, unlike the Uu interface communication method, V2X communication based on PC5 uses side link resources, that is, by reasonably allocating resources, multiple base stations perform resource coordination, and multiple cells can use side link resources in the same frequency band. This avoids frequent resource switching problems for the vehicle due to mobility and reduces the communication signaling overhead of the side link (since when the transmitting node switches side link resources, it can send side link signaling messages to the opposite receiving node). Therefore, in the switching process of the PC5, a method is designed to realize the effect of optimizing the side link resources.

It should be understood that, in the embodiment of the present application, in order to distinguish between the source base station and the target base station, the first base station is referred to as a source base station, the second base station is referred to as a target base station, and the second terminal device is referred to as a peer terminal device.

Fig. 5 is a schematic flow chart of a method 500 for wireless communication according to an embodiment of the present application. The method 500 may include the following steps.

S501, the first base station sends first information to the second base station.

Wherein the first information may be used for the first terminal to perform PC5 interface communication prior to the procedure of switching from the first base station to the second base station.

Specifically, before the process of switching the first base station to the second base station, it may be understood that the first terminal has not yet started switching between base stations, for example, in conjunction with fig. 4, before step 405.

Optionally, the first information includes at least one of PC5 QoS information and second PC5 resource information.

Wherein the PC5 QoS information is used for the first terminal to perform PC5 interface communication before the procedure of switching from the first base station to the second base station, and the PC5 QoS information includes a distance parameter in addition to the standardized PQI and other parameters such as a rate, where the distance refers to a minimum communication distance that can ensure that the receiving node meets other QoS requirements (i.e., other QoS parameter indexes except Range parameters). The second PC5 resource information is used to characterize the second PC5 resource, for example, the second PC5 resource may be SLRB configuration information and a corresponding SLRB identifier, where the SLRB configuration may include RLC (Radio link control ) layer configuration (retransmission mechanism, etc.), medium access control (MEDIA ACCESS control, MAC) layer configuration (communication band mapping, radio resource scheduling information, etc.), physical layer configuration (information about a used radio channel band, etc.), and the SLRB configuration information may include logical channel identification information, MAC layer scheduling data to physical layer band identification information, etc., which is not limited herein.

Wherein the second PC5 resource may comprise at least one PC5 resource for PC5 interface communication by the first terminal prior to the procedure of handover from the source base station to the target base station. The second PC5 resource may be allocated by the first base station for the first terminal. The second PC5 resource may be a resource pool, which may include one or more PC5 resources.

Wherein the PC5 resource may be used to carry data of the PC5 interface. Specifically, the PC5 resource may be a communication band of a physical layer, without limitation. The communication band may be a combination (i.e., resource pool) of a plurality of communication bands, or may be a specific communication band, without limitation.

It should be noted that, the first base station may configure the second PC5 resource (i.e., the resource pool) for the first terminal by means of static configuration or dynamic configuration. Further, when the first terminal transmits data of a certain service, the first terminal may select a communication band from the second PC5 resource to be used for carrying the data of the service according to the QoS requirement (parameter) corresponding to the service.

In one possible implementation of step S501, the first base station may send a first request message to the second base station, where the first request message is used to request that the first terminal be handed over from the first base station to the second base station.

Wherein the first request message may include the first information.

Optionally, the first base station may send the second PC5 resource to the first terminal, where the second PC5 resource acquired by the first terminal from the first base station includes 8 different communication frequency bands, and may determine whether the frequency band is occupied according to an occupancy rate (a time ratio in which a received power of a certain frequency band is greater than a certain threshold value in a unit time) of listening to the 8 frequency bands in the wireless information, or determine whether the frequency band may meet a QoS requirement according to detecting a channel quality of the frequency band (for example, there may be corresponding received power thresholds for QoS requirements of a certain communication distance, and different communication distances may correspond to different received power thresholds). And 1 out of 8 communication bands may be selected for communication according to a certain criterion (the present application is not limited thereto).

It should be understood that when the second PC5 resource includes only one PC5 resource for the first terminal to perform PC5 interface communication before the process of switching from the source base station to the target base station, the resource is the PC5 resource for the first terminal to perform PC5 interface communication before the process of switching from the source base station to the target base station; or, when the second PC5 resources include at least two PC5 resources for PC5 interface communication by the first terminal before the process of switching from the source base station to the target base station, then one PC5 resource is selected from the second PC5 resources as the PC5 resource for PC5 interface communication by the first terminal before the process of switching from the source base station to the target base station, for example, the PC5 resource with the best quality or the highest priority in the second PC5 resources is selected, which is not limited in this application.

For example, the PC5 resource information of the first terminal may be included in a transparent RRC container (TRANSPARENT RRC container) for Uu interface handover, which may further include: the ID of the second base station, the communication interface capability information of the first terminal, the QoS flow and QoS parameter configuration information of Uu interface, and the like.

Optionally, the first base station acquires the first information by receiving the first information sent by the first terminal. Specifically, the first base station may send indication information to the first terminal to instruct the first terminal to report the first information.

In another possible implementation, when the first terminal performs handover between base stations through the core network, the first base station may send a second request message to the access and mobility management node. Wherein the second request message may comprise the first information, and the second request message may be used to request handover of the first terminal from the first base station to the second base station.

S502, the second base station sends first PC5 resource information to the first base station according to the first information.

After the second base station receives the first information, the second base station may determine the first PC5 resource information according to the first information, and then send the first PC5 resource information to the first base station.

Specifically, the second base station may determine the first PC5 resource information according to the PC5 QoS information or the second PC5 resource information included in the first information. For example, when the first information includes PC5 QoS information and second PC5 resource information, firstly, the second base station determines third PC5 resource information according to the PC5 QoS information, where the third PC5 resource information is used to characterize a third PC5 resource, and the third PC5 resource includes at least one PC5 resource that satisfies the PC5 QoS information, secondly, the second base station may allocate the first PC5 resource to the first terminal through the second PC5 resource and the third PC5 resource, where the first PC5 resource may be an intersection part of the second PC5 resource information and the third PC5 resource information, or may be the third PC5 resource information and part of the second PC5 resource information, and the application is not limited herein; or when the first information only comprises the second PC5 resource information, the second base station can allocate the first PC5 resource to the first terminal according to the second PC5 resource information, wherein the first PC5 resource is contained in the second PC5 resource; or when the first information includes only PC5 QoS information, the second base station may allocate the first PC5 resource to the first terminal according to the PC5 QoS information.

The first PC5 resource information is used to characterize a first PC5 resource, where the first PC5 resource is used for PC5 interface communication in a process of switching from the first base station to the second base station by the first terminal, and the process of switching from the first base station to the second base station by the first terminal may take reconfiguration from RRC connection as a starting point and finishing RRC connection with the second base station as an ending point. For example, in connection with fig. 4, in the process of steps 405 to 406.

It should be appreciated that the first PC5 resource information may be SLRB configuration information and corresponding SLRB identification. Specifically, the SLRB configuration may include a radio link control layer configuration (e.g., retransmission mechanism, logical channel configuration, etc.), a MAC layer configuration (e.g., communication band mapping, radio resource scheduling information, etc.), a physical layer configuration (information about a used radio channel band, etc.), SLRB configuration information may include logical channel identification information, MAC layer scheduling data to a frequency band identification information of a physical layer, etc., and the present application is not limited herein.

When there is a QoS requirement of the PC5, the resources included in the third PC5 resource satisfy the QoS requirement. For example, when the QoS requirements include a guaranteed stream bit rate (Guaranteed flow bit rate, GFBR), the third PC5 resource may at least guarantee support for a transmission rate corresponding to the GFBR value; when the QoS requirement includes the transmission distance, the third PC5 resource may ensure that other QoS parameters within the transmission distance value are satisfied, for example, the QoS parameter is pqi=1, and when the transmission distance (Range) =500 meters, the QoS requirement is that data transmission of 500 meters may ensure a packet delay budget of 20ms and a packet error rate of 10 ^-4.

In one manner of possible implementation, the second base station may send a first request response message to the first base station, the first request response message including the first PC5 resource information.

When the first terminal performs handover between base stations through the core network, the second base station receives a second request message from the access and mobility management node, the second request message including first information, and sends a second request response message to the access and mobility management node according to the first information, the second request response message including first PC5 resource information.

Through the scheme, the second base station can acquire the PC5 resource before the base station is switched by the first terminal, and the second base station determines the first PC5 resource, namely the PC5 resource for the first terminal to communicate in the base station switching process, so that the second base station can allocate the PC5 resource for the first terminal in advance for communication.

S503, the first base station sends the first PC5 resource information to the first terminal.

The first base station may send the first PC5 resource information to the first terminal after receiving the first PC5 resource information sent by the second base station.

Further, after receiving the first PC5 resource information, the first terminal may select one PC5 resource from the first PC5 resources characterized by the first PC5 resource information as a target PC5 resource, and further perform PC5 interface communication in a process of switching the first terminal from the first base station to the second base station through the target PC5 resource. In addition, the first terminal may also send the first PC5 resource information to the second terminal, so that the first terminal and the second terminal communicate through the first PC5 resource in a process of switching the first terminal from the first base station to the second base station.

It should be noted that the first PC5 resource may include at least one PC5 resource for the first terminal to perform PC5 interface communication during the handover from the first base station to the second base station.

Illustratively, when the first PC5 resource includes only one PC5 resource for PC5 interface communication by the first terminal in the process of switching from the first base station to the second base station, then the first terminal uses the resource for communication; or when the first PC5 resource includes at least two PC5 resources for the first terminal to perform PC5 interface communication during the handover from the first base station to the second base station, the first terminal may select one PC5 resource from the first PC5 resources for the first terminal to perform PC5 interface communication during the handover from the first base station to the second base station. Specifically, each PC5 resource may be selected according to a quality or priority of each PC5 resource in the first PC5 resources, which is not limited herein.

It should be understood that when the first terminal is about to transmit data of a certain service, the first terminal may select one PC5 resource from the first PC5 resources for carrying the data of the service according to a QoS requirement (parameter) corresponding to the data. For example, assuming that the first PC5 resource includes 8 different communication frequency bands, the first terminal may determine whether the frequency band is occupied according to listening to the occupancy rate of the 8 frequency bands in the wireless information, or determine whether the frequency band may meet the QoS requirement according to detecting the channel quality of the frequency band. And 1 out of 8 communication bands may be selected for communication according to a certain criterion (the present application is not limited thereto).

It should also be appreciated that when the first terminal performs a handover between base stations through the core network, the first base station receives a second request response message from the access and mobility management node, the second request response message including the first PC5 resource information.

Alternatively, the second base station may receive PC5QoS information from the first terminal, the PC5QoS information being used for PC5 interface communication by the first terminal before the process of switching from the first base station to the second base station, and the second base station transmitting fourth PC5 resource information to the first terminal according to the PC5QoS information, the fourth PC5 resource information being used for characterizing a fourth PC5 resource, the fourth PC5 resource information being used for PC5 communication by the first terminal after the process of switching from the first base station to the second base station. For example, in connection with fig. 4, after step 406.

Wherein the fourth PC5 resource may comprise at least one PC5 resource for PC5 interface communication of the first terminal after a procedure of handover from the first base station to the second base station. Optionally, the fourth PC5 resource includes the first PC5 resource. After receiving the information of the fourth PC5 resource, the first terminal may select one PC5 resource information for communication by using factors such as quality and priority of the PC5 resource in the fourth PC5 resource, and the specific selection manner is not limited herein.

Through the scheme, the second base station acquires the PC5 QoS information of the first terminal, the second base station judges whether the first terminal can continue to use SLRB configuration of the first base station in the covered cell, and SLRB configuration which can be used continuously and the first PC5 resource, namely the fourth PC5 resource information, distributed by the second base station for the first terminal are sent to the first terminal. Therefore, after the first terminal completes the handover, part or all of the original SLRB configuration can be continuously used, so that excessive resource overhead for signaling interaction or notification with the second terminal caused by changing the PC5 communication resource is reduced.

Fig. 6 is a schematic flow chart of a method 600 of wireless communication according to an embodiment of the present application. The method 600 may include the following steps.

S601, the first base station transmits instruction information to the first terminal.

The indication information is used for indicating the first terminal to report the first information. For the description of the first information, reference may be made to the description related to the first information in S501, which is not repeated herein for brevity.

S602, the first terminal sends first information to the first base station.

S603, the first terminal sends measurement information to the first base station.

Alternatively, the first terminal may report the measurement information to the first base station. Specifically, the first terminal may periodically send measurement information to the first base station during communication.

The measurement information may include information such as quality and strength of a radio resource channel used by the first terminal.

The first base station can select the second base station for the first terminal according to the measurement information reported by the first terminal, and the application does not limit the selection conditions of the specific second base station, so that the first terminal performs a switching process from the first base station to the second base station.

It should be understood that when the first terminal does not perform handover between base stations through the core network, steps S604 to S606 are performed, and steps S607 to S611 are not performed; or when the first terminal performs handover between base stations through the core network, steps S607 to S611 are performed, and S604 to S606 are not performed.

S604, the first base station transmits the first information to the second base station.

Wherein the first base station may send the first information to the second base station after receiving the first information. Optionally, the first base station may determine, according to measurement information sent by the first terminal, that the first terminal has a requirement for performing cell switching, and send the first information to the second base station.

In one manner of possible implementation, the first base station may send a first request message to the second base station, where the first request message is used to request handover of the first terminal from the first base station to the second base station, and the first request message includes the first information.

S605, the second base station allocates the first PC5 resource.

The second base station may allocate the first PC5 resource to the first terminal according to the first information, where the description of the first PC5 resource and the first PC5 resource information may refer to the description related to S502, and for brevity, the disclosure is not repeated here.

S606, the second base station sends the first PC5 resource information to the first base station.

S607, the first base station transmits the first information to the access and mobility management node.

After receiving the first information, the first base station may send the first information to the access and mobility management node, optionally, the first base station determines that the first terminal may perform cell handover according to measurement information sent by the first terminal, and sends the first information to the access and mobility management node.

In one way of possible implementation, the first base station may send a second request message to the access and mobility management node, the second request message being for requesting handover of the first terminal from the first base station to the second base station, the second request message comprising the first information.

S608, the access and mobility management node sends the first information to the second base station.

S609, the second base station allocates the first PC5 resource.

And S610, the second base station sends the first PC5 resource information to the access and mobility management node according to the first information.

Wherein the second base station may send a second request response message to the access and mobility management node, the second request response message comprising the first PC5 resource information.

S611, the access and mobility management node sends the first PC5 resource information to the first base station.

S612, the first base station sends the first PC5 resource information to the first terminal.

S613, the first terminal device determines the first target PC5 resource information.

The first target PC5 resource information is used to characterize a first target PC5 resource, and after receiving the first PC5 resource information, the first terminal may select one PC5 resource from the first PC5 resource information, as the first target PC5 resource, for the first terminal device to perform PC5 interface communication in a process of switching from the first base station to the second base station. For a specific method for selecting the first target PC5 resource, reference may be made to the description related to selecting one PC5 resource from the first PC5 resources in S503, which is not repeated herein for brevity.

S614, the first terminal transmits PC5 QoS information to the second base station.

Wherein the PC5 QoS information is used for the PC5 interface communication by the first terminal before the process of switching from the first base station to the second base station, and the PC5 QoS information is added with a distance parameter besides the standardized PQI and other parameters such as a rate, where the distance refers to a minimum communication distance that can ensure that the receiving node meets other QoS requirements (i.e., other QoS parameter indexes except Range parameters). Optionally, the first terminal and the second base station may perform RRC connection to complete time synchronization and other operations. And, after completing the RRC connection, the first terminal may transmit RRC connection completion indication information to the second base station.

In one possible implementation, the first terminal may send an RRC connection reconfiguration message to the second base station, the RRC connection reconfiguration message including PC5 QoS information.

S615, the first terminal transmits the first target PC5 resource information to the second terminal.

The first terminal and the second terminal can communicate in the process of switching the first terminal from the first base station to the second base station through the first target PC5 resource by sending the first target PC5 resource information to the second terminal through the first terminal.

Based on the above scheme, in the process of cell switching of the first terminal, the first base station sends the PC5 interface information (including QoS information, SLRB configuration, communication mode, etc.) of the first terminal to the second base station, so that the second base station can configure PC5 communication resources for the destination cell for the first terminal in advance in the process of cell switching of the first terminal, and the PC5 resources allocated by the second base station after the cell switching of the first terminal can meet the PC5 communication requirements among terminal devices.

And S616, the second base station sends fourth PC5 resource information to the first terminal according to the PC5 QoS information.

Wherein the fourth PC5 resource information is used to characterize a fourth PC5 resource, the fourth PC5 resource information being used for PC5 interface communication by the first terminal after the procedure of switching from the first base station to the second base station, the fourth PC5 resource may include at least one PC5 resource for PC5 interface communication by the first terminal after the procedure of switching from the first base station to the second base station. Optionally, the fourth PC5 resource includes the first PC5 resource. The first terminal is after the first terminal has established an RRC connection with the second base station after the process of switching from the first base station to the second base station. For example, in connection with fig. 4, after step 406.

S617, the first terminal device determines the second target PC5 resource information.

The second target PC5 resource information is used to characterize a second target resource, and the first terminal may select one PC5 resource from the fourth PC5 resource as the second target PC5 resource, where the second target PC5 resource is used for the first terminal to perform PC5 interface communication after the process of switching from the first base station to the second base station.

Illustratively, when the fourth PC5 resource includes only one PC5 resource for PC5 interface communication of the first terminal after the procedure of switching from the first base station to the second base station, selecting the PC5 resource as the second target PC5 resource for communication; or when the fourth PC5 resource includes at least two PC5 resources for the first terminal to perform PC5 interface communication after the process of switching from the first base station to the second base station, the first terminal may select one PC5 resource from the fourth PC5 resources as the second target PC5 resource for the first terminal to perform PC5 interface communication after the process of switching from the first base station to the second base station, and specifically, may select the second target PC5 resource according to the quality or priority of each PC5 resource in the fourth PC5 resource, which is not limited herein.

It should be understood that when the first terminal is about to transmit data of a certain service, the first terminal may select one PC5 resource from the fourth PC5 resources for carrying the data of the service according to a QoS requirement (parameter) corresponding to the data. For example, assuming that the fourth PC5 resource includes 8 different communication frequency bands, the first terminal may determine whether the frequency band is occupied according to listening to the occupancy rate of the 8 frequency bands in the wireless information, or determine whether the frequency band may meet the QoS requirement according to detecting the channel quality of the frequency band. And 1 out of 8 communication bands may be selected for communication according to a certain criterion (the present application is not limited thereto).

S618, the first terminal sends the second target PC5 resource information to the second terminal.

Wherein, by the first terminal sending the second target PC5 resource information to the second terminal, the first terminal and the second terminal can communicate using the second target PC5 resource after the process of switching the first terminal from the first base station to the second base station.

S619, fourth PC5 resource information is stored.

Optionally, the second base station may store the fourth PC5 resource information, so that the PC5 resource information of the first terminal may be directly used in the next handoff process between base stations.

Based on the above scheme, the second base station acquires the PC5 interface information of the first terminal including SLRB configuration of the first terminal, and the second base station determines whether the first terminal can continue to use SLRB configuration of the first base station in the cell covered by the second base station, and sends the PC5 interface communication resources allocated to the first terminal along with the second base station, which can continue to use SLRB configuration, to the first terminal. Therefore, after the first terminal finishes the switching, the original SLRB configuration can be continuously used, so that the resource overhead for carrying out signaling interaction or notification with the second terminal due to changing the PC5 communication resource is reduced.

The various embodiments described herein may be separate solutions or may be combined according to inherent logic, which fall within the scope of the present application.

It should be understood that, in the foregoing embodiments of the methods and operations implemented by the terminal device, the methods and operations implemented by the network device may also be implemented by a component (e.g., a chip or a circuit) that may be used in the terminal device, or the methods and operations implemented by the network device may also be implemented by a component (e.g., a chip or a circuit) that may be used in the network device.

The method provided by the embodiment of the application is described in detail above with reference to fig. 5 and 6. The following describes in detail the communication device provided in the embodiment of the present application with reference to fig. 7 to 10. It should be understood that the descriptions of the apparatus embodiments and the descriptions of the method embodiments correspond to each other, and thus, descriptions of details not described may be referred to the above method embodiments, which are not repeated herein for brevity.

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

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

Fig. 7 is a schematic block diagram of a communication device provided by an embodiment of the present application. The communication device 700 includes a receiving unit 710, a transmitting unit 720, and a processing unit 730. The receiving unit 710 may implement a received communication function, the transmitting unit 720 may implement a transmitted communication function, and the processing unit may generate a dead line processed communication function. The receiving unit 710 and the transmitting unit 720 may also be referred to as communication interfaces or communication units.

Optionally, the communication device 700 may further include a storage unit, where the storage unit may be used to store instructions and/or data, and the processing unit 730 may read the instructions and/or data in the storage unit, so that the communication device implements the foregoing method embodiments.

It is to be appreciated that the processing unit 730 of the communication device 700 may be implemented by at least one processor or processor-related circuit. The receiving unit 710 and the transmitting unit 720 may be implemented by a transceiver or transceiver-related circuits. The receiving unit 710 and the transmitting unit 720 may also be referred to as communication units or communication interfaces. The memory unit may be implemented by at least one memory.

The communication apparatus 700 may be configured to perform the actions performed by the terminal device in the above method embodiment, where the communication apparatus 700 may be the terminal device or a component configurable in the terminal device, the receiving unit 710 is configured to perform the operations related to the reception on the terminal device side in the above method embodiment, the sending unit 720 is configured to perform the operations related to the transmission on the terminal device side in the above method embodiment, and the processing unit 730 is configured to perform the operations related to the processing on the terminal device side in the above method embodiment.

Or the communication apparatus 700 may be configured to perform the actions performed by the network device in the above method embodiment, where the communication apparatus 700 may be the network device or a component configurable in the network device, the receiving unit 710 is configured to perform the operations related to the receiving on the network device side in the above method embodiment, and the sending unit 720 is configured to perform the operations related to the sending on the network device side in the above method embodiment.

As a design, the communication device 700 is configured to perform the actions performed by the first terminal in the embodiment shown in fig. 5, and the receiving unit 710 is configured to: s503.

As an example, the communication device 700 is configured to perform the actions performed by the first terminal in the embodiment shown in fig. 6, and the receiving unit 710 is configured to: s601, S610, S613; the transmitting unit 720 is configured to: s602, S603, S611, S612, S614; the processing unit 730 is configured to: s613, S617.

As yet another example, the communication apparatus 700 is configured to perform the actions performed by the second terminal in the embodiment shown in fig. 6, and the receiving unit 710 is configured to: s612 and S614.

The communication device 700 may implement steps or processes performed corresponding to the first terminal or the second terminal in the method 500 and the method 600 according to the embodiment of the present application, and the communication device 700 may include units for performing the method 500 in fig. 5 and the method performed by the first terminal or the second terminal in the method 600 in fig. 6. And, each unit in the communication device 700 and the other operations and/or functions described above are respectively for implementing the corresponding flows of the method 500 in fig. 5 and the method 600 in fig. 6.

Wherein, when the communication device 700 is used to perform the method 500 in fig. 5, the receiving unit 710 may be used to perform step 503 in the method 500.

When the communication device 700 is used as a first terminal for performing the method 600 in fig. 6, the receiving unit 710 may be used for performing the steps 601, 610, 613 in the method 600, the transmitting unit 720 may be used for performing the steps 602, 603, 611, 612, 614 in the method 600, and the processing unit 730 may be used for performing the steps 612, 614 in the method 600.

When the communication device 700 is used as a second terminal for performing the method 600 in fig. 6, the receiving unit 710 may be used for performing the steps 612, 614 in the method 600.

It should be understood that the specific process of each unit performing the corresponding steps has been described in detail in the above method embodiments, and is not described herein for brevity.

As another design, the communication device 700 is configured to perform the actions performed by the first base station in the embodiment shown in fig. 5, and the receiving unit 710 is configured to: s502; the transmitting unit 720 is configured to: s501, S503.

As an example, the communication device 700 is configured to perform the actions performed by the second base station in the embodiment shown in fig. 5, and the receiving unit 710 is configured to: s501; the transmitting unit 720 is configured to: s502.

As yet another example, the communication apparatus 700 is configured to perform the actions performed by the first base station in the embodiment shown in fig. 6, and the receiving unit 710 is configured to: s602, S603, S605, S609; the transmitting unit 720 is configured to: s601, S604, S606, S610.

As yet another example, the communication apparatus 700 is configured to perform the actions performed by the second base station in the embodiment shown in fig. 6, and the receiving unit 710 is configured to: s604, S607, S611; the transmitting unit 720 is configured to: s605, S608, S613; the processing unit 730 is configured to: s605, S609.

The communication device 700 may implement steps or processes corresponding to those performed by the first base station or the second base station in the method 500 and the method 600 according to the embodiment of the present application, and the communication device 700 may include units for performing the method 500 in fig. 5 and the method performed by the first base station or the second base station in the method 600 in fig. 6. And, each unit in the communication device 700 and the other operations and/or functions described above are respectively for implementing the corresponding flows of the method 500 in fig. 5 and the method 600 in fig. 6.

As shown in fig. 8, the embodiment of the application further provides a communication device 800. The communication device 800 comprises a processor 810, the processor 810 being coupled to a memory 820, the memory 820 being for storing computer programs or instructions and/or data, the processor 810 being for executing the computer programs or instructions and/or data stored by the memory 820, such that the method in the above method embodiments is performed.

Optionally, the communication device 800 includes one or more processors 810.

Optionally, as shown in fig. 8, the communication device 800 may further include a memory 820.

Optionally, the communication device 800 may include one or more memories 820.

Alternatively, the memory 820 may be integrated with the processor 810 or provided separately.

Optionally, as shown in fig. 8, the communication device 800 may further comprise a transceiver 830, where the transceiver 830 is used for receiving and/or transmitting signals. For example, the processor 810 is configured to control the transceiver 830 to receive and/or transmit signals.

As an aspect, the communication apparatus 800 is configured to implement the operations performed by the first terminal or the second terminal in the above method embodiment.

For example, the processor 810 is configured to implement the operations related to the processing performed by the first terminal or the second terminal in the above method embodiment, and the transceiver 830 is configured to implement the operations related to the transceiving performed by the first terminal or the second terminal in the above method embodiment.

Alternatively, the communication apparatus 800 is configured to implement the operations performed by the first base station or the second base station in the above method embodiment.

For example, the processor 810 is configured to implement the operations related to the processing performed by the first base station or the second base station in the above method embodiment, and the transceiver 830 is configured to implement the operations related to the transceiving performed by the first base station or the second base station in the above method embodiment.

The embodiment of the application also provides a communication device 900, and the communication device 900 can be a terminal device or a chip. The communication device 900 may be configured to perform the operations performed by the first terminal and the second terminal in the above-described method embodiments.

Fig. 9 shows a simplified schematic diagram of a terminal device when the communication device 900 is a terminal device. As shown in fig. 9, the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input-output device. The processor is mainly used for processing communication protocols and communication data, controlling the terminal equipment, executing software programs, processing data of the software programs and the like. The memory is mainly used for storing software programs and data. The radio frequency circuit is mainly used for converting a baseband signal and a radio frequency signal and processing the radio frequency signal. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used for receiving data input by a user and outputting data to the user. It should be noted that some kinds of terminal apparatuses may not have an input/output device.

When data is transmitted, the processor carries out baseband processing on the data to be transmitted and then outputs a baseband signal to the radio frequency circuit, and the radio frequency circuit carries out radio frequency processing on the baseband signal and then transmits the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data. For ease of illustration, only one memory and processor are shown in fig. 9, and in an actual end device product, one or more processors and one or more memories may be present. The memory may also be referred to as a storage medium or storage device, etc. The memory may be provided separately from the processor or may be integrated with the processor, as the embodiments of the application are not limited in this respect.

In the embodiment of the application, the antenna and the radio frequency circuit with the receiving and transmitting functions can be regarded as a receiving and transmitting unit of the terminal equipment, and the processor with the processing function can be regarded as a processing unit of the terminal equipment.

As shown in fig. 9, the terminal device includes a transceiving unit 910 and a processing unit 920. The transceiver unit 910 may also be referred to as a transceiver, transceiver device, etc. The processing unit 920 may also be referred to as a processor, a processing board, a processing module, a processing device, etc.

Alternatively, the device for implementing the receiving function in the transceiver unit 910 may be regarded as a receiving unit, and the device for implementing the transmitting function in the transceiver unit 910 may be regarded as a transmitting unit, i.e., the transceiver unit 910 includes a receiving unit and a transmitting unit. The transceiver unit may also be referred to as a transceiver, transceiver circuitry, or the like. The receiving unit may also be referred to as a receiver, or receiving circuit, among others. The transmitting unit may also sometimes be referred to as a transmitter, or a transmitting circuit, etc.

It should be understood that fig. 9 is only an example and not a limitation, and the above-described terminal device including the transceiving unit and the processing unit may not depend on the structure shown in fig. 9.

When the communication device 900 is a chip, the chip includes a transceiver unit and a processing unit. The receiving and transmitting unit can be an input and output circuit or a communication interface; the processing unit may be an integrated processor or microprocessor or an integrated circuit on the chip.

The embodiment of the application also provides a communication device 1000, and the communication device 1000 can be a network device or a chip. The communications apparatus 1000 can be configured to perform the operations performed by the network device in the method embodiments described above.

When the communication apparatus 1000 is a network device, it is a base station, for example. Fig. 10 shows a simplified schematic of a base station architecture. The base station includes 1010 part and 1020 part. The 1010 part is mainly used for receiving and transmitting radio frequency signals and converting the radio frequency signals and baseband signals; the 1020 part is mainly used for baseband processing, control of the base station, and the like. Section 1010 may be generally referred to as a transceiver unit, transceiver circuitry, or transceiver, etc. The portion 1020 is typically a control center of the base station, and may be generally referred to as a processing unit, and is configured to control the base station to perform the processing operations on the network device side in the foregoing method embodiment.

The transceiver unit of section 1010, which may also be referred to as a transceiver or transceiver, includes an antenna and radio frequency circuitry, wherein the radio frequency circuitry is configured to perform radio frequency processing. Alternatively, the device for implementing the receiving function in the 1010 part may be regarded as a receiving unit, and the device for implementing the transmitting function may be regarded as a transmitting unit, i.e. the 1010 part includes the receiving unit and the transmitting unit. The receiving unit may also be referred to as a receiver, or a receiving circuit, etc., and the transmitting unit may be referred to as a transmitter, or a transmitting circuit, etc.

Portions 1020 may include one or more boards, each of which may include one or more processors and one or more memories. The processor is used for reading and executing the program in the memory to realize the baseband processing function and control of the base station. If there are multiple boards, the boards can be interconnected to enhance processing power. As an alternative implementation manner, the multiple boards may share one or more processors, or the multiple boards may share one or more memories, or the multiple boards may share one or more processors at the same time.

For example, in one implementation, the transceiver unit of section 1010 is configured to perform the steps related to the transceiving performed by the first base station and the second base station in the embodiment illustrated in fig. 5; 1020 are used in part to perform the steps associated with the processing performed by the first base station and the second base station in the embodiment shown in fig. 6.

For example, in yet another implementation, the transceiver unit of section 1010 is configured to perform the steps related to the transceiving performed by the first base station and the second base station in the embodiment illustrated in fig. 6; 1020 are used in part to perform the steps associated with the processing performed by the first base station and the second base station in the embodiment shown in fig. 6.

It should be understood that fig. 10 is only an example and not a limitation, and the above-described network device including the transceiving unit and the processing unit may not depend on the structure shown in fig. 10.

When the communication device 1000 is a chip, the chip includes a transceiver unit and a processing unit. The receiving and transmitting unit can be an input and output circuit and a communication interface; the processing unit is an integrated processor or microprocessor or integrated circuit on the chip.

The embodiment of the application also provides a computer readable storage medium, on which computer instructions for implementing the method executed by the terminal device or the method executed by the network device in the above method embodiment are stored.

For example, the computer program when executed by a computer, makes the computer implement the method executed by the terminal device or the method executed by the network device in the above-described method embodiment.

The embodiment of the application also provides a computer program product containing instructions, which when executed by a computer, cause the computer to implement the method executed by the terminal device or the method executed by the network device in the above method embodiment.

The embodiment of the application also provides a communication system which comprises the network equipment and the terminal equipment in the embodiment.

It will be clearly understood by those skilled in the art that, for convenience and brevity, explanation and beneficial effects of the relevant content in any of the above-mentioned communication devices may refer to the corresponding method embodiments provided above, and are not repeated here.

In an embodiment of the present application, the terminal device or the network device may include a hardware layer, an operating system layer running above the hardware layer, and an application layer running above the operating system layer. The hardware layer may include a central processing unit (central processing unit, CPU), a memory management unit (memory management unit, MMU), and a memory (also referred to as a main memory). The operating system of the operating system layer may be any one or more computer operating systems that implement business processing through processes (processes), for example, a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or windows operating system, etc. The application layer may include applications such as a browser, address book, word processor, instant messaging software, and the like.

The embodiment of the present application is not particularly limited to the specific structure of the execution body of the method provided by the embodiment of the present application, as long as communication can be performed by the method provided according to the embodiment of the present application by running a program in which codes of the method provided by the embodiment of the present application are recorded. For example, the execution body of the method provided by the embodiment of the present application may be a terminal device or a network device, or a functional module in the terminal device or the network device that can call a program and execute the program.

Various aspects or features of the application may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used herein may encompass a computer program accessible from any computer-readable device, carrier, or media.

Among other things, computer readable storage media can be any available media that can be accessed by a computer or data storage devices such as servers, data centers, etc. that contain one or more integration of the available media. Usable (or computer readable) media may include, for example, but are not limited to: magnetic media or magnetic storage devices (e.g., floppy disks, hard disks (e.g., removable disks), magnetic tape), optical media (e.g., compact Discs (CDs), digital versatile discs (DIGITAL VERSATILE DISC, DVDs), etc.), smart cards and flash memory devices (e.g., erasable programmable read-only memories (EPROMs), cards, sticks, or key drives, etc.), or semiconductor media (e.g., solid-state disks (SSDs) etc.), U-discs, read-only memories (ROMs), random access memories (random access memory, RAMs), etc., various media that may store program code.

Various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to: wireless channels, and various other media capable of storing, containing, and/or carrying instruction(s) and/or data.

It should be appreciated that the processor referred to in the embodiments of the present application may be a central processing unit (central processing unit, CPU), but may also be other general purpose processors, digital signal processors (DIGITAL SIGNAL processors, DSPs), application Specific Integrated Circuits (ASICs), off-the-shelf programmable gate arrays (field programmable GATE ARRAY, FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It should also be understood that the memory referred to in embodiments of the present application may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an erasable programmable ROM (erasable PROM), an electrically erasable programmable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM). For example, RAM may be used as an external cache. By way of example, and not limitation, RAM may include the following forms: static random access memory (STATIC RAM, SRAM), dynamic random access memory (DYNAMIC RAM, DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (double DATA RATE SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (ENHANCED SDRAM, ESDRAM), synchronous link dynamic random access memory (SYNCHLINK DRAM, SLDRAM) and direct memory bus random access memory (direct rambus RAM, DR RAM).

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

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

In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the above-described division of units is merely a logical function division, and there may be another division manner in actual implementation, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Furthermore, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.

The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units can be selected according to actual needs to realize the scheme provided by the application.

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

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.

When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. For example, the computer may be a personal computer, a server, or a network device, etc. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, for example, by wired (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)), or wireless (e.g., infrared, wireless, microwave, etc.) means from one website, computer, server, or data center. With respect to computer readable storage media, reference may be made to the description above.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present application should be included in the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims and the specification.

Claims

1. A method of wireless communication, comprising:

The second base station receives first information, wherein the first information is used for PC5 interface communication of the first terminal before the process of switching from the first base station to the second base station;

The second base station sends first PC5 resource information according to the first information, the first PC5 resource information is used for representing first PC5 resources, and the first PC5 resources are used for PC5 interface communication of the first terminal in the process of switching from the first base station to the second base station;

The second base station receives PC5 QoS information from the first terminal, wherein the PC5 QoS information is used for PC5 interface communication of the first terminal before a process of switching from the first base station to the second base station;

The second base station sends fourth PC5 resource information to the first terminal according to the PC5 QoS information, the fourth PC5 resource information is used for representing fourth PC5 resources, and the fourth PC5 resource information is used for PC5 interface communication of the first terminal after the process of switching from the first base station to the second base station;

Wherein the fourth PC5 resource includes at least one PC5 resource for PC5 interface communication by the first terminal after a procedure of switching from the first base station to the second base station, and the fourth PC5 resource includes the first PC5 resource.

2. The method of claim 1, wherein the first information comprises at least one of: PC5QoS information, second PC5 resource information;

wherein the second PC5 resource information is used to characterize a second PC5 resource, and the second PC5 resource includes at least one PC5 resource for PC5 interface communication by the first terminal prior to a procedure of switching from the first base station to the second base station.

3. A method according to claim 1 or 2, characterized in that the first PC5 resource comprises at least one PC5 resource for PC5 interface communication by the first terminal during a handover from the first base station to the second base station.

4. The method of claim 2, wherein the second base station transmitting first PC5 resource information according to the first information, comprises:

the second base station allocates the first PC5 resource to the first terminal according to the first information;

And the second base station transmits the first PC5 resource information.

5. The method of claim 4, wherein the first information includes the PC5 QoS information and the second PC5 resource information, and wherein the second base station allocates the first PC5 resource to the first terminal according to the first information, comprising:

The second base station determines third PC5 resource information according to the PC5 QoS information, wherein the third PC5 resource information is used for representing third PC5 resources;

the second base station allocates the first PC5 resource to the first terminal according to the second PC5 resource information and the third PC5 resource, wherein the first PC5 resource is contained in the second PC5 resource and the third PC5 resource.

6. The method of claim 4, wherein the first information includes the second PC5 resource information, and wherein the second base station allocates the first PC5 resource to the first terminal according to the first information, comprising:

and the second base station allocates the first PC5 resource to the first terminal according to the second PC5 resource information, wherein the first PC5 resource is contained in the second PC5 resource.

7. The method according to claim 1 or 2, wherein the second base station receives the first information, comprising:

The second base station receives first request information from the first base station, wherein the first request information comprises the first information, and the first request information is used for requesting the first terminal to be switched from the first base station to the second base station;

The second base station sends first PC5 resource information according to the first information, and the method comprises the following steps:

And the second base station sends a first request response message to the first base station according to the first information, wherein the first request response message comprises the first PC5 resource information.

8. The method according to claim 1 or 2, wherein the second base station receives the first information, comprising:

The second base station receiving a second request message from an access and mobility management node, the second request message including the first information, the second request message being for requesting handover of the first terminal from the first base station to the second base station;

And the second base station sends a second request response message to the access and mobility management node according to the first information, wherein the second request response message comprises the first PC5 resource information.

9. A method of wireless communication, comprising:

The method comprises the steps that a first terminal receives first PC5 resource information from a source base station, wherein the first PC5 resource information is used for representing first PC5 resources, and the first PC5 resources are used for PC5 interface communication in the process of switching from the first base station to a second base station;

The first terminal performs PC5 interface communication in the process of switching from the first base station to the second base station according to the first PC5 resource information;

The first terminal sends PC5 QoS information to the second base station, wherein the PC5 QoS information is used for PC5 interface communication before the first terminal is switched to the second base station from the first base station;

the first terminal receives fourth PC5 resource information from the second base station, wherein the fourth PC5 resource information is used for representing fourth PC5 resources, and the fourth PC5 resource information is used for PC5 interface communication of the first terminal after the process of switching from the first base station to the second base station;

10. The method of claim 9, wherein when the first PC5 resource comprises at least two PC5 resources for the first terminal to perform PC5 interface communication during a handoff from the first base station to the second base station;

The first terminal performs PC5 interface communication in the process of switching from the first base station to the second base station according to the first PC5 resource information, including:

The first terminal selects one PC5 resource from the first PC5 resources;

And the first terminal uses the selected one PC5 resource to perform PC5 interface communication in the process of switching from the first base station to the second base station.

11. The method according to claim 9 or 10, characterized in that the method further comprises:

the first terminal sends first information to the first base station, the first information being used for PC5 interface communication by the first terminal prior to a handoff procedure from the first base station to a second base station.

12. The method of claim 11, wherein the method further comprises:

The first terminal receives indication information from the first base station, wherein the indication information is used for indicating reporting of the first information.

13. The method according to claim 10, wherein the method further comprises:

And the first terminal sends target resource information to the second terminal, wherein the target resource information is used for representing the selected one PC5 resource.

14. An apparatus for wireless communication, comprising:

a memory for storing computer instructions;

A processor for executing computer instructions stored in the memory, to cause the apparatus for wireless communication to perform the method of any one of claims 1 to 8 or the method of any one of claims 9 to 13.

15. A computer readable storage medium, having stored thereon a computer program which, when executed by an apparatus for wireless communication, causes the apparatus for wireless communication to perform the method of any of claims 1 to 8 or the method of any of claims 9 to 13.