WO2022067807A1 - 通信方法和通信装置 - Google Patents

通信方法和通信装置 Download PDF

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Publication number
WO2022067807A1
WO2022067807A1 PCT/CN2020/119733 CN2020119733W WO2022067807A1 WO 2022067807 A1 WO2022067807 A1 WO 2022067807A1 CN 2020119733 W CN2020119733 W CN 2020119733W WO 2022067807 A1 WO2022067807 A1 WO 2022067807A1
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WIPO (PCT)
Prior art keywords
terminal device
information
network
instruct
terminal
Prior art date
Application number
PCT/CN2020/119733
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English (en)
French (fr)
Inventor
卢前溪
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to CN202080103640.9A priority Critical patent/CN116018876A/zh
Priority to PCT/CN2020/119733 priority patent/WO2022067807A1/zh
Priority to EP20955827.9A priority patent/EP4224928A4/en
Publication of WO2022067807A1 publication Critical patent/WO2022067807A1/zh
Priority to US18/147,349 priority patent/US20230189087A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/03Reselecting a link using a direct mode connection
    • H04W36/033Reselecting a link using a direct mode connection in pre-organised networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0055Transmission or use of information for re-establishing the radio link
    • H04W36/0061Transmission or use of information for re-establishing the radio link of neighbour cell information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/03Reselecting a link using a direct mode connection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/08Reselecting an access point
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02Terminal devices
    • H04W88/04Terminal devices adapted for relaying to or from another terminal or user
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the embodiments of the present application relate to communication technologies, and in particular, to a communication method and a communication device.
  • UE user equipment
  • UE-UTRAN user equipment-Universal Mobile Telecommunications Terrestrial Access Network
  • UE-UTRAN user equipment-Universal Mobile Telecommunications Terrestrial Access Network
  • PC5 direct-connected communication interface
  • D2D device-to-device
  • the indirect communication method can be adopted, that is, the relay communication can be realized through the communication architecture of the PC5 interface and the Uu interface .
  • the data of the user equipment (referred to as remote user equipment, or remote UE) can be transmitted to the relay user equipment (also referred to as relay UE) through the PC5 interface, and the relay UE then communicates with the relay UE through the relay UE.
  • the Uu interface between the network devices sends the data of the remote UE to the network.
  • Embodiments of the present application provide a communication method and a communication device, which can improve resource utilization and reduce power consumption of terminal equipment.
  • an embodiment of the present application may provide a communication method, and the method may be executed by a first terminal device or a module (eg, a chip) configured in (or used for) the first terminal device, and the method includes:
  • the first terminal device receives first information from the first network device, where the first information is used to instruct the first terminal device to switch to the second network device;
  • the first terminal device sends second information to the second terminal device, where the second information is used to instruct the second terminal device to switch to the second network device, wherein the first terminal device is the
  • the second terminal device provides a relay service.
  • the embodiments of the present application may provide a communication method, and the method may be executed by a second terminal device or a module (eg, a chip) configured in (or used for) the second terminal device, and the method includes:
  • the second terminal device receives second information from the first terminal device, where the second information is used to instruct the second terminal device to switch to the second network device, wherein the first terminal device is the first terminal device
  • Two terminal devices provide relay services.
  • the embodiments of the present application may provide a communication method, and the method may be executed by a first network device or a module (eg, a chip) configured in (or used for) the first network device, and the method includes:
  • the first network device sends first information and second information to the first terminal device, where the first information is used to instruct the first terminal device to switch to the second network device, and the second information is used to instruct the first terminal device to switch to the second network device.
  • Two terminal devices are switched to the second network device through the first terminal device, and the first terminal device provides a relay service for the second terminal device.
  • an embodiment of the present application can provide a communication device, the communication device is configured in the first terminal device or the communication device is the first terminal device, including:
  • a transceiver module configured to receive first information from a first network device, where the first information is used to instruct the first terminal device to switch to a second network device;
  • a processing module configured to determine switching to the second network device according to the first information
  • a transceiver module further configured to send second information to a second terminal device, where the second information is used to instruct the second terminal device to switch to the second network device, wherein the first terminal device is the The second terminal device provides a relay service.
  • an embodiment of the present application may provide a communication device, where the communication device is configured in a second terminal device or the communication device is a second terminal device, including:
  • a transceiver module configured to receive second information from a first terminal device, where the second information is used to instruct the second terminal device to switch to the second network device, wherein the first terminal device is the The second terminal device provides a relay service.
  • the processing module determines to switch to the second network device according to the second information.
  • an embodiment of the present application may provide a communication device, where the communication device is configured in a first network device or the communication device is a first network device, including:
  • a processing module that determines first information and second information, where the first information is used to instruct the first terminal device to switch to a second network device, and the second information is used to instruct the second terminal device to pass the the first terminal device is switched to the second network device;
  • the transceiver module is configured to send the first information and the second information to a first terminal device, and the first terminal device provides a relay service for the second terminal device.
  • the embodiments of the present application may further provide a terminal device, including:
  • processors memories, interfaces for communicating with network devices
  • the memory stores computer-executable instructions
  • the processor executes the computer-implemented instructions stored in the memory, so that the processor executes the communication method as provided in any one of the first aspect and/or the second aspect.
  • the embodiments of the present application may further provide a network device, including:
  • Processor memory, interface for communication with terminal equipment
  • the memory stores computer-executable instructions
  • the processor executes the computer-executable instructions stored in the memory, so that the processor executes the communication method as provided in any one of the third aspects.
  • embodiments of the present application provide a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, are used to implement the first aspect and the /or the communication method according to any one of the second aspect.
  • embodiments of the present application provide a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, are used to implement any of the methods described in the third aspect.
  • an embodiment of the present application provides a program, which, when the program is executed by a processor, is used to execute the communication method described in any one of the first aspect and/or the second aspect.
  • an embodiment of the present application further provides a program, which, when the program is executed by a processor, is used to execute the communication method described in any one of the third aspect above.
  • the above-mentioned processor may be a chip.
  • embodiments of the present application provide a computer program product, including program instructions, where the program instructions are used to implement the communication method according to any one of the first aspect and/or the second aspect.
  • an embodiment of the present application provides a computer program product, including program instructions, where the program instructions are used to implement the communication method described in any one of the third aspects.
  • an embodiment of the present application provides a chip, including: a processing module and a communication interface, where the processing module can execute the communication method according to any one of the first aspect and/or the second aspect.
  • the chip also includes a storage module (eg, memory), the storage module is used for storing instructions, the processing module is used for executing the instructions stored in the storage module, and the execution of the instructions stored in the storage module causes the processing module to execute the first step.
  • a storage module eg, memory
  • the storage module is used for storing instructions
  • the processing module is used for executing the instructions stored in the storage module
  • the execution of the instructions stored in the storage module causes the processing module to execute the first step.
  • an embodiment of the present application provides a chip, including: a processing module and a communication interface, where the processing module can execute the communication method described in any one of the third aspect.
  • the chip also includes a storage module (eg, memory), the storage module is used for storing instructions, the processing module is used for executing the instructions stored in the storage module, and the execution of the instructions stored in the storage module causes the processing module to perform the third aspect The communication method of any one.
  • a storage module eg, memory
  • the storage module is used for storing instructions
  • the processing module is used for executing the instructions stored in the storage module
  • the execution of the instructions stored in the storage module causes the processing module to perform the third aspect The communication method of any one.
  • FIG. 1 is a schematic diagram of a communication system architecture suitable for the application
  • FIG. 2 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 3 is another schematic flowchart of the communication method provided by the embodiment of the present application.
  • FIG. 4 is another schematic flowchart of the communication method provided by the embodiment of the present application.
  • FIG. 5 is a schematic block diagram of an example of a communication device of the present application.
  • FIG. 6 is a schematic structural diagram of an example of a terminal device of the present application.
  • FIG. 7 is a schematic structural diagram of an example of a network device of the present application.
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • WCDMA wideband code division Multiple access
  • general packet radio service general packet radio service, GPRS
  • long term evolution long term evolution
  • LTE long term evolution
  • LTE frequency division duplex frequency division duplex, FDD
  • TDD time division duplex
  • UMTS universal mobile telecommunications system
  • WiMAX worldwide interoperability for microwave access
  • a terminal in this embodiment of the present application may refer to a UE, an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal device, a wireless communication device, a user agent, or a user device.
  • the terminal device may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a wireless communication
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices, which are the general term for the intelligent design of daily wear and the development of wearable devices using wearable technology, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones.
  • the terminal device may also be a terminal device in an Internet of Things (IoT) system.
  • IoT Internet of Things
  • IoT is an important part of the future development of information technology, and its main technical feature is that items pass through communication technology Connect with the network, so as to realize the intelligent network of human-machine interconnection and interconnection of things.
  • the network device in this embodiment of the present application may be a device used to communicate with a terminal device, and the network device may be a base station (base transceiver station, BTS) in a GSM or CDMA system, or a base station (nodeB, BTS) in a WCDMA system NB), it can also be an evolved base station (evolutional nodeB, eNB or eNodeB) in the LTE system, it can also be a wireless controller in the cloud radio access network (cloud radio access network, CRAN) scenario, or the network device can It is a relay station, an access point, a vehicle-mounted device, and a network device in a 5G network or a network device in a future evolved PLMN network, etc., which are not limited in the embodiments of the present application.
  • BTS base transceiver station
  • nodeB, BTS base station
  • eNodeB evolved base station
  • CRAN cloud radio access network
  • the network device can It is a relay station, an access
  • the PC5 interface may be a reference point between two UEs, and may be used to complete signaling and data transmission, proximity service discovery, direct communication, etc. on the control plane and the user plane.
  • the PC5 interface may be used for short-range direct communication or direct connection communication between UEs, which may be referred to as PC5 communication or PC5 interface communication for short.
  • the UE communicating through the PC5 interface may be located within the network coverage or may be located outside the network coverage, and the network may be a 4G network or a 5G network, which is not specifically limited in this embodiment of the present application.
  • the Uu interface may be an interface between a UE and an access network device.
  • the access network equipment may be a base station in UMTS, an evolved base station (evolutional node B, eNodeB or eNB) in a 4G network, a next generation base station (next generation node base station, gNodeB or gNB) in a 5G network, or the base station in the subsequent evolution network, without limitation.
  • the communication may be referred to as Uu communication or Uu interface communication for short.
  • Figure 1 is a schematic diagram of a system architecture. As shown in Figure 1, the system framework may include the following network elements:
  • a terminal such as UE1-UE4 in FIG. 1 .
  • Radio access network (RAN) node A module, device or device that implements access network functions based on wireless communication technology can be called a RAN node.
  • the RAN node is mainly used to provide UE wireless access to the mobile network.
  • the interface can manage radio resources, provide access services for the UE, and then complete the forwarding of control signals and user data between the UE and the core network.
  • the RAN node can be a base station.
  • the radio access network used in the 5G system is the next generation radio access network (NG-RAN), and the RAN node in the 5G system is the gNB.
  • NG-RAN next generation radio access network
  • gNB next generation radio access network
  • Access and mobility management function (AMF): mainly used for mobility management and access management.
  • AMF can be used to implement other functions other than session management among the functions of a mobility management entity (mobility management entity, MME), for example, functions such as legal interception, or access authorization (or authentication), which can achieve
  • MME mobility management entity
  • functions such as legal interception, or access authorization (or authentication)
  • the AMF module, apparatus or device, etc. may be referred to as an AMF node.
  • Session management function mainly used for session management, UE's internet protocol (IP) address allocation and management, selection of manageable user plane functions, policy control, or charging function interfaces
  • IP internet protocol
  • SMF nodes The termination point and downlink data notification, configuration of routing information for user plane functions, etc., the modules, devices or devices that can implement the SMF.
  • PCF Policy control function
  • Unified data management used to handle user identification, access authentication, registration, or mobility management.
  • UPF User plane function
  • I-UPF intermediate-UPF
  • anchor UPF anchor-UPF
  • A-UPF anchor-UPF
  • the I-UPF is connected to the RAN
  • the A-UPF is the UPF of the session anchor
  • the A-UPF can also be called the PDU session anchor (PSA)
  • PSA PDU session anchor
  • Application function mainly supports interaction with the 3rd generation partnership project (3GPP) core network to provide services, such as influencing data routing decisions, policy control functions, or providing services to the network side Provide some services of third parties.
  • 3GPP 3rd generation partnership project
  • It can be understood as a third-party server, such as an application server in the Internet, that provides relevant service information, including providing service quality requirement information corresponding to the service to the PCF, and sending user plane data information of the service to the PSA-UPF.
  • the AF can also be a content provider (CP).
  • CP content provider
  • ProSe application server is a kind of AF.
  • Network exposure function which connects core network elements and external application servers, and provides services such as authentication and data forwarding when external application servers initiate service requests to the core network.
  • Data network A network used to provide data transmission, such as the Internet network.
  • Unified data repository It is used to provide storage and retrieval for PCF policies, storage and retrieval of open structured data, and user information storage for application function requests.
  • the UE accesses the network through the wireless air interface and obtains services, and the UE interacts with the RAN node through the air interface, and interacts with the AMF node through non-access stratum (NAS) messages.
  • the UPF node is responsible for the forwarding and reception of user data in the terminal.
  • the transmission resources and scheduling functions of the UPF node serving the terminal are managed and controlled by the SMF node.
  • the AMF node is mainly responsible for the signaling processing part, such as: access control, mobility management, attach and detach, and gateway selection, etc., and the AMF node can also provide services for the session of the terminal.
  • the SMF node is responsible for user plane node selection, user plane node redirection, Internet Protocol (IP) address allocation, bearer establishment, modification and release, and quality of service (QoS) control.
  • IP Internet Protocol
  • QoS quality of service
  • the network devices (for example, the first network device and the second network device) in this application may be the RAN nodes shown in FIG. 1 .
  • the relay terminal equipment that is providing the relay service for the remote terminal equipment needs to switch the network equipment providing the service, how to handle the communication connection relationship between the relay UE and the remote UE, there is no corresponding solution at present. Disconnect directly, and the remote terminal device will re-search for devices that can provide services. The relay terminal may cause handover due to poor communication quality with the current serving cell, but the communication quality with the remote terminal may still be high. The terminal provides relay services. Therefore, the present application proposes that when the relay terminal switches to serving cell, the remote terminal device can be notified to switch to the same target network device as the relay terminal. It is possible to prevent the remote terminal equipment from re-searching for the equipment providing the service due to the switching of the relay terminal equipment, which can improve the resource utilization rate and reduce the power consumption of the terminal equipment.
  • FIG. 2 is a schematic flowchart of a communication method 200 provided by an embodiment of the present application.
  • the first terminal device establishes direct connection communication (or sidelink communication) with the second terminal device, and the first terminal device provides a relay service for the second terminal device. That is to say, the first terminal device may serve as a relay terminal device (relay UE) to provide a relay service for the second terminal device that is a remote terminal device (remote UE).
  • the data of the second terminal device can be transmitted to the first terminal device through the PC5 interface, and the first terminal device then sends the data of the remote terminal device to the network through the Uu interface between the first terminal device and the first network device.
  • the first network device sends first information to the first terminal device, where the first information is used to instruct the first terminal device to switch to the second network device.
  • the first terminal device receives the first information from the first network device.
  • the first information is carried in a first handover message (or referred to as a first handover command) sent by the first network device to the first terminal device.
  • a first handover message (or referred to as a first handover command) sent by the first network device to the first terminal device.
  • the first network device sends the first handover message to the first terminal device. If the communication quality between the first terminal device and the first network device is degraded, and the cell signal quality of the second network device measured and reported by the first terminal device satisfies the handover condition of the first terminal device, the first network device determines that this The first terminal device switches to the second network device, and sends the first switching message to the first terminal device.
  • the first information may include an identifier of the second network device, and the first handover message may include relevant configuration information for accessing the second network device, etc., which is not limited in this application.
  • the first information may be a display indication switch or an implicit indication switch.
  • the first information directly instructs the first terminal device to switch to the second network device, and the first terminal device performs the switch after receiving the first information.
  • the first information implicitly indicates the handover may be that the first information includes a handover condition for handover to the second network device, and when the handover condition is satisfied, the first terminal device is handed over to the second network device, but this The application is not limited to this.
  • the switching of the first terminal device to the second network device can be specifically understood as the switching of the first terminal device to the cell managed by the second network device, and the cell managed by the second network device is regarded as the cell of the first terminal device. service area.
  • S220 The first terminal device sends second information to the second terminal device, where the second information is used to instruct the second terminal device to switch to the second network device.
  • the second terminal device receives the second information from the first terminal device.
  • the first network device sends the second information to the first terminal device, and the first terminal device forwards the second information to the second terminal device.
  • the second information is information relayed by the first network device to the second terminal device through the first terminal device. It is determined by the first network device whether to instruct the second terminal device to also switch to the second network device.
  • the first network device may determine that even if the first terminal device switches to the second terminal device, based on the location information of the first terminal device and the second terminal device, or the current communication quality between the first terminal device and the second terminal device The network device can still provide services for the second terminal device. Then the first network device sends the second information to the first terminal device to forward it to the second terminal device through the first terminal device, notifying the second terminal device to switch to the second network device through the first terminal device, that is, The second terminal device may obtain the network service of the second network device through the first terminal device. Alternatively, the first network device may also send the second information to the second terminal device according to other conditions, which is not limited in this application.
  • the second information may be carried in a second handover message sent by the first network device to the first terminal device, and the first terminal device forwards the second handover message to the second terminal device.
  • the second information is carried in the first handover message, and after receiving the first handover message, the first terminal device forwards the second information that needs to be sent to the second terminal device to the second terminal device.
  • the first terminal device determines to send the second information to the second terminal device according to the first information.
  • the first terminal device determines whether to instruct the second terminal device to switch to the second network device. If it is determined to instruct the second terminal device to switch to the second network device, the first terminal device generates the second information and sends it to the second terminal device.
  • the first terminal device determines to switch to the second network device.
  • the first terminal device may determine, according to the communication quality between the first terminal device and the second terminal device, that it can still switch to the second network device after switching to the second network device.
  • Provide a relay service for the second terminal device for example, although the communication quality between the first terminal device and the first network device deteriorates due to the mobile, but the communication quality between the first terminal device and the second terminal device still maintains a high level, the first terminal device may send a message to the second terminal device.
  • the second information notifies the second terminal device to switch to the second network device, that is, the second terminal device can obtain the network service of the second network device through the first terminal device.
  • the first terminal device may also determine whether to send the second information to the second terminal device according to the position information of the second terminal device or the relative position information between the first terminal device and the second terminal device, or other information, to which this application applies Not limited.
  • the second information specifically instructs the second terminal device to switch to the second network device through the first terminal device.
  • the remote terminal equipment in the case of switching of the relay terminal equipment, the remote terminal equipment can be notified to switch the network equipment providing the service according to the conditions, so that the relay terminal can continue to provide the relay service for the remote equipment, and it is possible to avoid the relay service caused by the relay.
  • the switching of the terminal equipment causes the remote terminal equipment to search for the equipment providing the service again, which can reduce the power consumption of the remote terminal equipment and avoid unnecessary waste of resources.
  • the first terminal device needs to be switched from the first network device to the second network device, some resources (for example, user plane (UP) configured by the first network device for the first terminal device and the second terminal device some resources) may not continue to be used.
  • UP user plane
  • how to switch to the second network device through the first terminal device may include but not limited to the following two implementations.
  • connection is re-established, and the resource configuration of the second network device is implemented through the connection re-establishment.
  • the protocol may specify that the relay terminal device (ie, the first terminal device) disconnects the communication connection with the remote terminal device (ie, the second terminal device) when the relay terminal device (ie, the first terminal device) receives the first information, or , the protocol specifies that the remote terminal device disconnects the communication connection with the relay terminal device after receiving the second information.
  • the first information is further used to instruct the first terminal device to disconnect the communication connection with the second terminal device, or the second information is further used to instruct the first terminal device to disconnect the communication connection with the second terminal device.
  • the second terminal device disconnects the communication connection with the first terminal device.
  • FIG. 3 is a schematic flowchart of another communication method 300 provided by an embodiment of the present application.
  • the communication connection may be a direct communication connection between the first terminal device and the second terminal device, such as a PC5 interface connection.
  • disconnecting the communication connection between the first terminal device and the second terminal device may include releasing part of communication resources, such as physical layer data communication resources, or reserving part of the resources.
  • the first terminal device may not release the related information of the second terminal device, and does not need to re-acquire after the connection is re-established. related information or access resources, etc., so that the second terminal device can request connection re-establishment in S320 according to the stored related information. It can avoid waste of resources and improve the efficiency of connection reconstruction.
  • the second terminal device disconnects the communication connection between the first terminal device and the second terminal device after receiving the second information.
  • the first terminal device disconnects the communication connection with the second terminal device after sending the second information, for example, stops detecting data information from the second terminal device, and stops providing data relay services for the terminal device.
  • the terminal device disconnects the communication connection with the second terminal device, for example, stops sending data information to the first terminal device, etc., but the present application is not limited to this.
  • the first terminal device sends third information to the second terminal device, which is used to instruct to disconnect the communication connection between the first terminal device and the second terminal device.
  • the third information or the like is sent to the second terminal device, but the present application is not limited to this.
  • the second terminal device sends fourth information to the first terminal device, which is used to instruct to disconnect the communication connection between the first terminal device and the second terminal device.
  • the third information and/or the fourth information is PC5 signaling (PC5 Signaling, PC5-S) or PC5 radio access control signaling (PC5 radio resource control, RRC).
  • PC5 signaling PC5 Signaling, PC5-S
  • PC5 radio access control signaling PC5 radio resource control, RRC
  • the first terminal device and the second terminal device reach a consensus on disconnecting the communication connection between the first terminal device and the second terminal device, which can avoid waste of resources.
  • the first terminal device switches to the second network device.
  • the first terminal device performs handover from the first network device to the second network device. That is, the first network device acts as the source network device of the first terminal device, and the first terminal device is switched from the first network device to the second network device which is the target network device.
  • a random access procedure for accessing the second network device is initiated by the first terminal device, such as sending a random access preamble sequence on a random access channel (random access channel, RACH) of the second network device to access the first terminal device.
  • RACH random access channel
  • the first terminal device After the second network device notifies the first terminal device of the corresponding network configuration through the RRC message, the first terminal device sends a handover completion confirmation message (Handover Confirmation, HO-confirm) to the second network device, thereby completing the transfer of the first terminal device to the second network device.
  • Switching of two network devices but the present application is not limited to this.
  • the second terminal device sends fifth information to the first terminal device, which is used for requesting to re-establish the communication connection between the first terminal device and the second terminal device.
  • the first terminal device receives the fifth information from the second terminal device. That is, the fifth information is used to establish the PC5 connection between the first terminal device and the second terminal device.
  • the fifth information is PC5 signaling (PC5 Signaling, PC5-S) or PC5 radio access control signaling (PC5 radio resource control, RRC).
  • the fifth information is carried in a connection re-establishment request (re-connect request) message.
  • PC5 signaling PC5 Signaling, PC5-S
  • PC5 radio access control signaling PC5 radio resource control, RRC
  • the fifth information is carried in a connection re-establishment request (re-connect request) message.
  • re-connect request connection re-establishment request
  • S330 may be executed before S320, or may be executed after S320.
  • the first terminal device sends sixth information to the second terminal device, which is used to indicate that the re-establishment of the communication connection between the first terminal device and the second terminal device is completed.
  • the second terminal device receives the sixth information from the first terminal device.
  • the first terminal device receives the fifth information for requesting connection re-establishment sent from the second terminal device
  • the first terminal device can communicate with the second terminal device.
  • the network device interacts to complete the relevant configuration for the first terminal device to provide the relay service for the second terminal device, and sends sixth information to the second terminal device to notify the second terminal device that the communication connection re-establishment is completed.
  • the second terminal device may determine that it can continue to communicate with the network through the relay service provided by the first terminal device.
  • the sixth information is carried in a connection re-establishment acknowledgment (re-connect ACK) message.
  • re-connect ACK connection re-establishment acknowledgment
  • the first terminal device further sends the relevant configuration information after the connection is re-established to the second terminal device.
  • the second terminal device After receiving the configuration information, the second terminal device communicates with the first terminal device according to the configuration information.
  • the second terminal device determines that the handover to the second network device is successful; or, in the case where the device does not receive the sixth information within the first time interval after the device receives the second information, the second terminal device determines that the handover to the second network device fails.
  • the first time interval may be specified by a protocol or configured by a network.
  • the second terminal device After receiving the second information, the second terminal device starts a first timer (or may be other devices that measure time such as a counter, a timer, etc.), and the time duration of the first timer is the first time interval.
  • a first timer or may be other devices that measure time such as a counter, a timer, etc.
  • the time duration of the first timer is the first time interval.
  • the second terminal device determines that the handover to the second network device is successful, and stops the first timer; or, if the first timer After the timeout, the second terminal device determines that the handover to the second network device fails. That is, if the sixth information is not received during the running of the first timer, the second terminal device determines that the handover to the second network device fails.
  • the second terminal device may trigger the link re-establishment process again, such as sending a connection re-establishment message to the first terminal device again.
  • the second terminal device may search for a cell that can provide services for the second terminal device through a cell search process, and access the network through a random access process.
  • the second terminal device may search for other terminal devices that can provide relay communication services, establish a sidelink link with the terminal device, and communicate with the network through the terminal device, but the present application is not limited to this.
  • the second terminal device by limiting the time for the second terminal device to switch to the second network device through the first terminal device through the first time interval, it can be avoided that the first terminal device is not switched to the second network device through the first terminal device for a long time.
  • two terminal devices cannot communicate.
  • the second terminal device sends a handover complete message to the first terminal device, which is used to confirm that the handover of the second terminal device to the second network device is completed.
  • the first terminal device receives the handover complete message of the second terminal device.
  • the second terminal device may notify the second network device that the handover is completed through the first terminal device, so that a consensus is reached between the second terminal device and the second network device, so as to carry out subsequent communication.
  • the first terminal device sends the handover complete message to the second network device.
  • the second network device receives the handover complete message from the first terminal device.
  • the first terminal device forwards the handover complete message to the second network device, so that a consensus is reached between the second terminal device and the second network device, for subsequent communication.
  • the second terminal device sends confirmation information after receiving the sixth information of the first terminal device, and the first terminal device can determine, according to the confirmation information, that the second terminal device has completed the handover to the second network device, and use the handover complete message Notify the second network device, but the application is not limited to this.
  • the first terminal device and the second terminal device perform RLC re-establishment and/or MAC reconfiguration, and the resource configuration of the second network device is implemented through RLC re-establishment and/or MAC reconfiguration.
  • the network side reserves the control plane resources of the second terminal device. After the first terminal device switches to the second network device, the network reconfigures the user plane resources for the second terminal device.
  • the first terminal device and the second terminal device For the configured user plane resources, RLC re-establishment and/or MAC re-configuration are performed, but the present application is not limited to this.
  • the first terminal device after the first terminal device is switched to the second network device, the first terminal device re-establishes a direct communication connection with the second terminal device according to the configuration of the second network device, so as to realize the second terminal device Switch to the second network device through the first terminal device. It can realize that when the relay terminal device is switched, the remote terminal device is switched to the same network device through the relay terminal device, which can prevent the remote terminal device from re-searching for the device that provides the service due to the switching of the relay terminal device. The power consumption of the remote terminal equipment can be reduced, and unnecessary waste of resources can be avoided.
  • FIG. 4 is a schematic flowchart of another communication method 400 provided by an embodiment of the present application.
  • the protocol may specify that the relay terminal device (ie the first terminal device) perform RLC re-establishment and/or with the remote terminal device (ie the second terminal device) when the relay terminal device (ie the first terminal device) receives the first information.
  • the protocol specifies that the remote terminal device performs RLC re-establishment and/or MAC reconfiguration with the relay terminal device after receiving the second information.
  • the first information is further used to instruct the first terminal device to perform RLC re-establishment and/or MAC reconfiguration with the second terminal device, or the second information It is also used to instruct the second terminal device to perform RLC re-establishment and/or MAC reconfiguration with the first terminal device.
  • the first method or the second method is an optional method for implementing the switching of the second terminal device to the second network device through the first terminal device.
  • determine the method used If the switching mode is determined by the first network device, the first network device notifies the first terminal device through the first information or the second terminal device through the second information; if the switching mode is determined by the first terminal device, the first terminal device The terminal device notifies the second terminal device through the second information, but the present application is not limited to this.
  • the first terminal device is switched from the first network device to the second network device.
  • the first network device is used as the source network device of the first terminal device, and the first terminal device is switched from the first network device to the second network device which is the target network device.
  • a random access procedure for accessing the second network device is initiated by the first terminal device, such as sending a random access preamble sequence on the RACH of the second network device to access the second network device.
  • the first terminal device sends a handover completion confirmation message (Handover Confirmation, HO-confirm) to the second network device, thereby completing the transfer of the first terminal device to the second network device.
  • a handover completion confirmation message (Handover Confirmation, HO-confirm)
  • the first terminal device and the second terminal device perform RLC re-establishment and/or MAC re-configuration.
  • the first terminal device can interact with the second network device to complete the relevant configuration for the first terminal device to provide relay services for the second terminal device (for example, the second terminal device user plane configuration of the device, etc., but the application is not limited to this). Therefore, the first terminal device can perform RLC re-establishment (RLC re-establish) and/or MAC reconfiguration (MAC reset or MAC reconfiguration) with the second terminal device based on the relevant configuration of the relay service.
  • RLC re-establish RLC re-establish
  • MAC reconfiguration MAC reset or MAC reconfiguration
  • the first terminal device sends seventh information to the second terminal device, which is used to instruct the completion of switching the first terminal device to the second network device.
  • the second terminal device receives the seventh information from the first terminal device.
  • the second terminal device may determine that the first terminal device has completed the handover to the second network device. Therefore, it can be determined that the RLC re-establishment and/or the MAC re-configuration is completed, and the communication with the network can be continued through the relay service provided by the first terminal device.
  • the second terminal device determines that the handover to the second network device is successful; or, in the second terminal device In the case that the device does not receive the seventh information within the second time interval after the device receives the second information, the second terminal device determines that the handover to the second network device fails.
  • the second time interval may be specified by the protocol or configured by the network.
  • the second terminal device After receiving the second information, the second terminal device starts a second timer (or may be a counter, timer, or other device for measuring time), and the time duration of the second timer is the second time interval.
  • a second timer or may be a counter, timer, or other device for measuring time
  • the second terminal device determines that the handover to the second network device is successful, and stops the second timer; or, if the second timer If the timer expires, the second terminal device determines that switching to the second network device fails. That is, if the seventh information is not received during the running of the second timer, the second terminal device determines that the handover to the second network device fails.
  • the second terminal device may trigger a link re-establishment process, such as sending a connection re-establishment message to the first terminal device.
  • a link re-establishment process such as sending a connection re-establishment message to the first terminal device.
  • the second terminal device may search for a cell that can provide services for the second terminal device through a cell search process, and access the network through a random access process.
  • the second terminal device may search for other terminal devices that can provide relay communication services, establish a sidelink link with the terminal device, and communicate with the network through the terminal device, but the present application is not limited to this.
  • the second terminal device by limiting the time for the second terminal device to switch to the second network device through the first terminal device through the second time interval, it can be avoided that the first terminal device is not switched to the second network device through the first terminal device for a long time.
  • two terminal devices cannot communicate.
  • the second terminal device sends a handover complete message to the first terminal device, which is used to confirm that the handover of the second terminal device to the second network device is completed.
  • the first terminal device receives the handover complete message of the second terminal device.
  • the second terminal device may notify the second network device that the handover is completed through the first terminal device, so that a consensus is reached between the second terminal device and the second network device, so as to carry out subsequent communication.
  • the first terminal device sends the handover complete message to the second network device.
  • the second network device receives the handover complete message from the first terminal device.
  • the first terminal device after receiving the handover complete message from the second terminal device in S440, forwards the handover complete message to the second network device, so that the second terminal device and the second network device can communicate with each other. A consensus is reached between them for subsequent communication.
  • the second terminal device sends confirmation information after receiving the seventh information from the first terminal device, and the first terminal device may determine, according to the confirmation information, that the second terminal device has completed switching to the second network device, and The second network device is notified through the handover complete message.
  • the first terminal device after the first terminal device is switched to the second network device, the first terminal device performs RLC re-establishment and/or MAC re-configuration with the second terminal device according to the configuration of the second network device, so as to realize the first terminal device.
  • the two terminal devices are switched to the second network device through the first terminal device. It can realize that when the relay terminal device is switched, the remote terminal device is switched to the same network device through the relay terminal device, which can prevent the remote terminal device from re-searching for the device that provides the service due to the switching of the relay terminal device.
  • the power consumption of the remote terminal equipment can be reduced, and unnecessary waste of resources can be avoided.
  • Fig. 2, Fig. 3, Fig. 4 are examples of the embodiment.
  • all or part of the steps can be selected for implementation, and the order of the steps in the illustration can also be adjusted for implementation.
  • the execution of each step in the illustration The sequence may be determined by the logical relationship between the various steps, and it should be understood that the labels of the various steps should not constitute a limitation on the execution sequence. It is within the protection scope of the present application to perform some steps in the figures or to adjust the sequence of the steps for specific implementation.
  • FIG. 5 is a schematic block diagram of a communication apparatus provided by an embodiment of the present application.
  • the communication apparatus 500 may include a processing unit 510 and a transceiver unit 520 .
  • the communication apparatus 500 may correspond to a terminal device (eg, a first terminal device or a second terminal device) in the above method embodiments, or be configured (or used for) in a terminal device (eg, , the chip in the first terminal device or the second terminal device).
  • a terminal device eg, a first terminal device or a second terminal device
  • the communication apparatus 500 may correspond to a terminal device (eg, a first terminal device or a second terminal device) in the above method embodiments, or be configured (or used for) in a terminal device (eg, the chip in the first terminal device or the second terminal device).
  • the communication apparatus 500 may correspond to the first terminal device or the second terminal device in the methods 200 , 300 , and 400 according to the embodiments of the present application, and the communication apparatus 500 may include a device for executing FIG. 2 , FIG. 3 , and FIG. 4. A unit of the method performed by the first terminal device or the second terminal device in the methods 200, 300, and 400. In addition, each unit in the communication device 500 and the above-mentioned other operations and/or functions are to implement the corresponding processes of the methods 200 , 300 and 400 in FIG. 2 , FIG. 3 , and FIG. 4 , respectively.
  • the transceiver unit 520 in the communication apparatus 500 may be an input/output interface or circuit of the chip, and the processing in the communication apparatus 500 Unit 510 may be a processor in a chip.
  • the communication apparatus 500 may further include a processing unit 510, and the processing unit 510 may be configured to process instructions or data to implement corresponding operations.
  • the communication device 500 may further include a storage unit 530, the storage unit 530 may be used to store instructions or data, and the processing unit 510 may execute the instructions or data stored in the storage unit, so as to enable the communication device to implement corresponding operations , the transceiver unit 520 in the communication apparatus 500 in the communication apparatus 500 may correspond to the transceiver 610 in the terminal equipment 600 shown in FIG. 6 , and the storage unit 530 may correspond to the terminal equipment 600 shown in FIG. 6 . in the memory.
  • the transceiver unit 520 in the communication apparatus 500 may be implemented through a communication interface (such as a transceiver or an input/output interface), for example, it may correspond to the terminal shown in FIG. 6 .
  • the transceiver 610 in the device 600, the processing unit 510 in the communication device 500 may be implemented by at least one processor, for example, may correspond to the processor 620 in the terminal device 600 shown in FIG.
  • the processing unit 510 may be implemented by at least one logic circuit.
  • the communication apparatus 500 may correspond to a network device (eg, a first network device or a second network device) in the above method embodiments, for example, or be configured (or used for) a network A chip in a device (eg, a first network device or a second network device).
  • a network device eg, a first network device or a second network device
  • a network A chip in a device
  • the communication apparatus 500 may correspond to the first network device or the second network device in the methods 200 , 300 , and 400 according to the embodiments of the present application, and the communication apparatus 500 may include a device for executing FIG. 2 , FIG. 3 , and FIG. In the methods 200, 300, and 400 in 4, the unit of the method performed by the first network device or the unit of the method performed by the second network device.
  • each unit in the communication device 500 and the above-mentioned other operations and/or functions are to implement the corresponding processes of the methods 200 , 300 and 400 in FIG. 2 , FIG. 3 , and FIG. 4 , respectively.
  • the transceiver unit in the communication device 500 is an input/output interface or circuit in the chip
  • the processing unit in the communication device 500 510 may be a processor in a chip.
  • the communication apparatus 500 may further include a processing unit 510, and the processing unit 510 may be configured to process instructions or data to implement corresponding operations.
  • the communication apparatus 500 may further include a storage unit 530, which may be used to store instructions or data, and the processing unit may execute the instructions or data stored in the storage unit 530 to enable the communication apparatus to implement corresponding operations.
  • the storage unit 530 in the communication apparatus 500 may correspond to the memory in the network device 700 shown in FIG. 7 .
  • the transceiver unit 520 in the communication apparatus 500 may be implemented through a communication interface (such as a transceiver or an input/output interface), for example, may correspond to the network shown in FIG. 7 .
  • the transceiver 710 in the device 700, the processing unit 510 in the communication device 500 may be implemented by at least one processor, for example, may correspond to the processor 720 in the network device 700 shown in FIG.
  • the processing unit 510 may be implemented by at least one logic circuit.
  • FIG. 6 is a schematic structural diagram of a terminal device 600 provided by an embodiment of the present application.
  • the terminal device 600 may be applied to the system as shown in FIG. 1 to perform the functions of the terminal device in the foregoing method embodiments.
  • the terminal device 600 includes a processor 620 and a transceiver 610 .
  • the terminal device 600 further includes a memory.
  • the processor 620, the transceiver 610 and the memory can communicate with each other through an internal connection path to transmit control and/or data signals, the memory is used to store computer programs, and the processor 620 is used to execute the computer in the memory. program to control the transceiver 610 to send and receive signals.
  • the above-mentioned processor 620 may be combined with the memory to form a processing device, and the processor 620 is configured to execute the program codes stored in the memory to realize the above-mentioned functions.
  • the memory can also be integrated in the processor 620 or independent of the processor 620 .
  • the processor 620 may correspond to the processing unit in FIG. 5 .
  • the transceiver 610 described above may correspond to the transceiver unit in FIG. 5 .
  • the transceiver 610 may include a receiver (or receiver, receiving circuit) and a transmitter (or transmitter, transmitting circuit). Among them, the receiver is used for receiving signals, and the transmitter is used for transmitting signals.
  • the terminal device 600 shown in FIG. 6 can implement various processes involving the terminal device in the embodiments of the methods 200 , 300 , and 400 in FIGS. 2 , 3 , and 4 .
  • the operations and/or functions of each module in the terminal device 600 are respectively to implement the corresponding processes in the foregoing method embodiments.
  • the above-mentioned processor 620 may be used to perform the actions described in the foregoing method embodiments that are implemented internally by the terminal device, and the transceiver 610 may be used to perform the operations described in the foregoing method embodiments that the terminal device sends to or receives from the network device. action.
  • the transceiver 610 may be used to perform the operations described in the foregoing method embodiments that the terminal device sends to or receives from the network device. action.
  • the above-mentioned terminal device 600 may further include a power supply for providing power to various devices or circuits in the terminal device.
  • the terminal device 600 may further include one or more of an input unit, a display unit, an audio circuit, a camera, a sensor, etc., and the audio circuit may also include a speaker, a microphone, etc. Wait.
  • FIG. 7 is a schematic structural diagram of a network device provided by an embodiment of the present application.
  • the network device 700 may be applied to the system shown in FIG. 1 to perform the functions of the network device in the foregoing method embodiments.
  • it may be a schematic diagram of a related structure of a network device.
  • the network device 700 shown in FIG. 7 can implement various processes involving the network device in the methods 200 , 300 , and 400 in FIGS. 2 , 3 , and 4 .
  • the operations and/or functions of each module in the network device 700 are respectively to implement the corresponding processes in the foregoing method embodiments.
  • the network device 700 shown in FIG. 7 is only a possible architecture of the network device, and should not constitute any limitation to the present application.
  • the methods provided in this application may be applicable to network devices of other architectures.
  • network equipment including CU, DU, and AAU, etc. This application does not limit the specific architecture of the network device.
  • An embodiment of the present application further provides a processing apparatus, including a processor and an interface, where the processor is configured to execute the method in any of the foregoing method embodiments.
  • the above-mentioned processing device may be one or more chips.
  • the processing device may be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on chip (SoC), or a It is a central processing unit (CPU), a network processor (NP), a digital signal processing circuit (DSP), or a microcontroller (microcontroller unit). , MCU), it can also be a programmable logic device (PLD) or other integrated chips.
  • FPGA field programmable gate array
  • ASIC application specific integrated circuit
  • SoC system on chip
  • MCU microcontroller unit
  • MCU programmable logic device
  • PLD programmable logic device
  • each step of the above-mentioned method can be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software.
  • the steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.
  • the software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art.
  • the storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware. To avoid repetition, detailed description is omitted here.
  • processor in this embodiment of the present application may be an integrated circuit chip, which has a signal processing capability.
  • each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software.
  • the aforementioned processors may be general purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components .
  • DSPs digital signal processors
  • ASICs application specific integrated circuits
  • FPGAs field programmable gate arrays
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
  • the software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art.
  • the storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.
  • the memory in this embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • Volatile memory may be random access memory (RAM), which acts as an external cache.
  • RAM random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous DRAM
  • SDRAM double data rate synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM synchronous link dynamic random access memory
  • direct rambus RAM direct rambus RAM
  • the present application also provides a computer program product, the computer program product includes: computer program code, when the computer program code is executed by one or more processors, makes the device including the processor The method in the above embodiment is performed.
  • the present application further provides a computer-readable storage medium, where the computer-readable storage medium stores program codes, and when the program codes are executed by one or more processors, the processing includes the processing
  • the device of the controller executes the method in the above-mentioned embodiment.
  • the present application further provides a system, which includes the aforementioned one or more network devices.
  • the system may further include one or more of the aforementioned terminal devices.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are only illustrative.
  • the division of the modules is only a logical function division. In actual implementation, there may be other division methods.
  • multiple modules may be combined or integrated into Another system, or some features can be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of modules may be in electrical, mechanical or other forms.
  • the processor may be a central processing unit (English: Central Processing Unit, referred to as: CPU), or other general-purpose processors, digital signal processors (English: Digital Signal Processor, referred to as: DSP), application specific integrated circuit (English: Application Specific Integrated Circuit, referred to as: ASIC) and so on.
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the aforementioned program can be stored in a readable memory.
  • the steps including the above method embodiments are executed; and the aforementioned memory (storage medium) includes: read-only memory (English: read-only memory, abbreviated as: ROM), RAM, flash memory, hard disk, Solid state drive, magnetic tape (English: magnetic tape), floppy disk (English: floppy disk), optical disc (English: optical disc) and any combination thereof.

Abstract

本申请实施例提供一种通信方法和通信装置,该方法包括:第一终端设备接收来自第一网络设备的第一信息,该第一信息用于指示该第一终端设备切换至第二网络设备;该第一终端设备向第二终端设备发送第二信息,该第二信息用于指示该第二终端设备切换至该第二网络设备,其中,该第一终端设备为该第二终端设备提供中继服务。能够提高资源利用率,减小终端设备功率消耗。

Description

通信方法和通信装置 技术领域
本申请实施例涉及通信技术,尤其涉及一种通信方法和通信装置。
背景技术
在通信领域,用户设备(user equipment,UE)除了可以通过蜂窝通信接口即用户设备-通用移动通信系统陆地接入网络(UE-UTRAN,Uu)接口进行通信外,还可以通过直连通信接口即基于近场的业务通信(接口)5(proximity-based service communication(interface)5,PC5)接口直接进行用户设备之间的通信,PC5接口可用于数据面和控制面的信息传输等。例如,设备到设备(device-to-device,D2D)通信允许用户设备之间直接进行通信,可以在小区网络的控制下与小区终端共享频谱资源,有效地提高频谱资源利用率。
当用户设备处于网络覆盖之外或用户设备与无线接入网(random access network,RAN)间通信质量差时,可以采用非直接通信方式,即通过PC5接口和Uu接口的通信架构实现中继通信。具体地,该用户设备(称为远端用户设备,或远端UE)的数据可以通过PC5接口传递至中继用户设备(也可以称为中继UE),中继UE再通过中继UE与网络设备之间的Uu接口将远端UE的数据发送至网络。目前仍缺乏针对提供中继服务的UE发生移动时的移动性管理方案。例如,当中继UE因发生移动而需要切换连接的网络设备时,如何处理中继UE与远端UE之间的通信连接关系等。
发明内容
本申请实施例提供了一种通信方法和通信装置,能够提高资源利用率,减小终端设备功率消耗。
第一方面,本申请实施例可提供一种通信方法,该方法可以由第一终端设备或配置于(或用于)第一终端设备的模块(如芯片)执行,该方法包括:
第一终端设备接收来自第一网络设备的第一信息,所述第一信息用于指示所述第一终端设备切换至第二网络设备;
所述第一终端设备向第二终端设备发送第二信息,所述第二信息用于指示所述第二终端设备切换至所述第二网络设备,其中,所述第一终端设备为所述第二终端设备提供中继服务。
第二方面,本申请实施例可提供一种通信方法,该方法可以由第二终端设备或配置于(或用于)第二终端设备的模块(如芯片)执行,该方法包括:
第二终端设备接收来自第一终端设备的第二信息,所述第二信息用于指示所述第二终端设备切换至所述第二网络设备,其中,所述第一终端设备为所述第二终端设备提供中继服务。
第三方面,本申请实施例可提供一种通信方法,该方法可以由第一网络设备或配置于(或用于)第一网络设备的模块(如芯片)执行,该方法包括:
第一网络设备向第一终端设备发送第一信息和第二信息,所述第一信息用于指示所述第一终端设备切换至第二网络设备,所述第二信息用于指示所述第二终端设备通过所述第一终端设备切换至所述第二网络设备,所述第一终端设备为所述第二终端设备提供中继服务。
第四方面,本申请实施例可提供一种通信装置,该通信装置配置于第一终端设备或 该通信装置为第一终端设备,包括:
收发模块,用于接收来自第一网络设备的第一信息,所述第一信息用于指示所述第一终端设备切换至第二网络设备;
处理模块,用于根据第一信息确定切换至第二网络设备;
收发模块,还用于向第二终端设备发送第二信息,所述第二信息用于指示所述第二终端设备切换至所述第二网络设备,其中,所述第一终端设备为所述第二终端设备提供中继服务。
第五方面,本申请实施例可提供一种通信装置,该通信装置配置于第二终端设备或该通信装置为第二终端设备,包括:
收发模块,用于接收来自第一终端设备的第二信息,所述第二信息用于指示所述第二终端设备切换至所述第二网络设备,其中,所述第一终端设备为所述第二终端设备提供中继服务。
处理模块,根据第二信息,确定切换至所述第二网络设备。
第六方面,本申请实施例可提供一种通信装置,该通信装置配置于第一网络设备或该通信装置为第一网络设备,包括:
处理模块,确定第一信息和第二信息,所述第一信息用于指示所述第一终端设备切换至第二网络设备,所述第二信息用于指示所述第二终端设备通过所述第一终端设备切换至所述第二网络设备;
收发模块,用于向第一终端设备发送第一信息和第二信息,所述第一终端设备为所述第二终端设备提供中继服务。
第七方面,本申请实施例还可提供一种终端设备,包括:
处理器、存储器、与网络设备进行通信的接口;
所述存储器存储计算机执行指令;
所述处理器执行所述存储器存储的计算机执行指令,使得所述处理器执行如第一方面和/或第二方面任一项提供的通信方法。
第八方面,本申请实施例还可提供一种网络设备,包括:
处理器、存储器、与终端设备进行通信的接口;
所述存储器存储计算机执行指令;
所述处理器执行所述存储器存储的计算机执行指令,使得所述处理器执行如第三方面任一项提供的通信方法。
第九方面,本申请实施例提供一种计算机可读存储介质,所述计算机可读存储介质中存储有计算机执行指令,当所述计算机执行指令被处理器执行时用于实现如第一方面和/或第二方面任一项所述的通信方法。
第十方面,本申请实施例提供一种计算机可读存储介质,所述计算机可读存储介质中存储有计算机执行指令,当所述计算机执行指令被处理器执行时用于实现如第三方面任一项所述的通信方法。
第十一方面,本申请实施例提供一种程序,当该程序被处理器执行时,用于执行如上如第一方面和/或第二方面任一项所述的通信方法。
第十二方面,本申请实施例还提供一种程序,当该程序被处理器执行时,用于执行如上第三方面任一项所述的通信方法。
可选地,上述处理器可以为芯片。
第十三方面,本申请实施例提供一种计算机程序产品,包括程序指令,程序指令用于实现如第一方面和/或第二方面任一项所述的通信方法。
第十四方面,本申请实施例提供一种计算机程序产品,包括程序指令,程序指令用于实现第三方面任一项所述的通信方法。
第十五方面,本申请实施例提供了一种芯片,包括:处理模块与通信接口,该处理模块能执行如第一方面和/或第二方面任一项所述的通信方法。
进一步地,该芯片还包括存储模块(如,存储器),存储模块用于存储指令,处理模块用于执行存储模块存储的指令,并且对存储模块中存储的指令的执行使得处理模块执行如第一方面和/或第二方面任一项所述的通信方法。
第十六方面,本申请实施例提供了一种芯片,包括:处理模块与通信接口,该处理模块能执行第三方面任一项所述的通信方法。
进一步地,该芯片还包括存储模块(如,存储器),存储模块用于存储指令,处理模块用于执行存储模块存储的指令,并且对存储模块中存储的指令的执行使得处理模块执行第三方面任一项所述的通信方法。
附图说明
图1是适用于本申请的通信系统架构的示意图;
图2是本申请实施例提供的通信方法的一个示意性流程图;
图3是本申请实施例提供的通信方法的另一个示意性流程图;
图4是本申请实施例提供的通信方法的另一个示意性流程图;
图5是本申请的通信装置的一例的示意性框图;
图6是本申请的终端设备的一例的示意性结构图;
图7是本申请的网络设备的一例的示意性结构图。
具体实施方式
下面将结合附图,对本申请中的技术方案进行描述。
本申请实施例的技术方案可以应用于各种通信系统,例如:全球移动通信系统(global system for mobile communications,GSM)、码分多址接入(code division multiple access,CDMA)系统、宽带码分多址接入(wideband code division multiple access,WCDMA)系统、通用分组无线业务(general packet radio service,GPRS)、长期演进(long term evolution,LTE)系统、LTE频分双工(frequency division duplex,FDD)系统、LTE时分双工(time division duplex,TDD)、通用移动通信系统(universal mobile telecommunications system,UMTS)、全球微波接入互操作性(worldwide interoperability for microwave access,WiMAX)通信系统、第五代(5th generation,5G)系统或新无线(new radio,NR)等。
本申请实施例中的终端可以指UE、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端设备、无线通信设备、用户代理或用户装置。终端设备还可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol,SIP)电话、无线本地环路(wireless local loop,WLL)站、个人数字处理(personal digital assistant,PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备,5G网络中的终端设备或者未来演进的公用陆地移动移动网(public land mobile network,PLMN)中的终端设备等,本申请实施例对此并不限定。
作为示例而非限定,在本申请实施例中,该终端设备还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备,是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称,如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上,或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备,更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能,例如:智能手表或智能眼镜等,以及只专注于某一类应用功能,需要和其它设备如智能 手机配合使用,如各类进行体征监测的智能手环、智能首饰等。
此外,在本申请实施例中,终端设备还可以是物联网(internet of things,IoT)系统中的终端设备,IoT是未来信息技术发展的重要组成部分,其主要技术特点是将物品通过通信技术与网络连接,从而实现人机互连,物物互连的智能化网络。
本申请实施例中的网络设备可以是用于与终端设备通信的设备,该网络设备可以是GSM或CDMA系统中的基站(base transceiver station,BTS),也可以是WCDMA系统中的基站(nodeB,NB),还可以是LTE系统中的演进型基站(evolutional nodeB,eNB或eNodeB),还可以是云无线接入网(cloud radio access network,CRAN)场景下的无线控制器,或者该网络设备可以为中继站、接入点、车载设备、以及5G网络中的网络设备或者未来演进的PLMN网络中的网络设备等,本申请实施例并不限定。
在本申请实施例中,PC5接口可以为两个UE之间的参考点,可以用于完成控制面和用户面的信令和数据传输、临近服务发现、直接通信等。PC5接口可以用于UE之间的近距离直接通信或直连通信,可以简称为PC5通信或PC5接口通信。通过PC5接口通信的UE可以位于网络覆盖范围内,也可以位于网络覆盖范围之外,该网络可以是4G网络,也可以是5G网络,本申请实施例对此不做具体限定。
在本申请实施例中,Uu接口可以为UE与接入网设备之间的接口。其中,该接入网设备可以为UMTS中的基站,4G网络中的演进型基站(evolutional node B,eNodeB或eNB),5G网络中的下一代基站(next generation node base station,gNodeB或gNB),或后续演进网络中的基站,不予限制。当两个或多个UE之间通过接入网节点进行通信时,该通信可以简称为Uu通信或Uu接口通信。
图1是一种系统架构的示意图。如图1所示,该系统框架可以包括下列网元:
1、终端,如图1中的UE1-UE4。
2、无线接入网(radio access network,RAN)节点:基于无线通信技术实现接入网络功能的模块、装置或设备等可以称为RAN节点,RAN节点主要用于提供UE无线接入移动网络的接口,能够管理无线资源,为UE提供接入服务,进而完成控制信号和用户数据在UE和核心网之间的转发,例如RAN节点可以是基站等。在5G系统中采用的无线接入网为下一代无线接入网(next generation radio access network,NG-RAN),该5G系统中的RAN节点为gNB。
3、接入和移动性管理功能(access and mobility management function,AMF):主要用于移动性管理和接入管理等。具体地,AMF可以用于实现移动性管理实体(mobility management entity,MME)的功能中除会话管理之外的其它功能,例如,合法监听、或接入授权(或鉴权)等功能,能够实现该AMF的模块、装置或设备等可以称为AMF节点。
4、会话管理功能(session management function,SMF):主要用于会话管理、UE的网络互连协议(internet protocol,IP)地址分配和管理、选择可管理用户平面功能、策略控制、或收费功能接口的终结点以及下行数据通知、为用户面功能配置路由信息等,能够实现该SMF的模块、装置或设备等可以称为SMF节点。
5、策略控制功能(policy control function,PCF):用于指导网络行为的统一策略框架,为控制平面功能网元(例如AMF,SMF网元等)提供策略规则信息等,能够实现该PCF的模块、装置或设备等可以称为PCF节点。
6、统一数据管理(unified data management,UDM):用于处理用户标识、接入鉴权、注册、或移动性管理等。
7、用户面功能(user plane function,UPF):用于分组路由和转发、或用户面数据的服务质量(quality of service,QoS)处理等。UPF具体分为中间-UPF(intermediate-UPF,I-UPF)和锚点UPF(anchor-UPF,A-UPF)。其中,I-UPF与RAN连接,A-UPF为会 话锚点的UPF,A-UPF又可以称为PDU会话锚点(PDU session anchor,PSA),能够实现该UPF的模块、装置或设备等可以称为UPF节点。
8、应用功能(application function,AF):主要支持与第三代合作伙伴计划(3rd generation partnership project,3GPP)核心网交互来提供服务,例如,影响数据路由决策、策略控制功能、或者向网络侧提供第三方的一些服务。可理解为第三方服务器,例如,Internet中的应用服务器,提供相关业务信息,包括向PCF提供业务对应的服务质量需求信息,以及向PSA-UPF发送业务的用户面数据信息。AF也可以是内容提供商(content provider,CP)。例如,ProSe应用服务器即为一种AF。
9、网络能力开放功能(network exposure function,NEF),连接核心网网元与外部应用服务器,对外部应用服务器向核心网发起业务请求时提供认证与数据转发等服务。
10、数据网络(data network,DN):用于提供传输数据的网络,例如,Internet网络等。
11、统一数据存储库(unified data repository,UDR):用于为PCF策略提供存储和检索,开放的结构化数据的存储和检索和应用功能请求的用户信息存储等。
其中,UE(例如,UE1、UE4)通过无线空口接入网络并获得服务,UE通过空口和RAN节点进行交互,通过非接入层(non-access stratum,NAS)消息和AMF节点进行交互。UPF节点负责终端中用户数据的转发和接收。UPF节点的为终端提供服务的传输资源和调度功能由SMF节点管理控制。AMF节点主要负责信令处理部分,例如:接入控制、移动性管理、附着与去附着以及网关选择等功能,且AMF节点还可以在为终端的会话提供服务的情况下,会为该会话提供控制面的存储资源,以存储会话标识、与会话标识关联的SMF网元标识等。SMF节点负责用户面节点选择,用户面节点重定向,因特网协议(internet protocol,IP)地址分配,承载的建立、修改和释放以及服务质量(quality of service,QoS)控制。当远端终端(例如,图1中的UE2)可以通过中继终端进行辅助,例如图1中,UE2可以通过UE1进行辅助,通过远端终端与中继终端之间的通信,以及中继终端与RAN节点之间的通信来实现远端终端和RAN节点之间的通信。
需要说明的是,本申请中的网络设备(例如,第一网络设备和第二网络设备)可以是图1所示的RAN节点。
需要说明的是,本申请实施例的说明书、权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象,而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换,以便这里描述的本申请的实施例例如能够以除了在这里图示或描述的那些以外的顺序实施。此外,术语“包括”和“具有”以及他们的任何变形,意图在于覆盖不排他的包含,例如,包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元,而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
为使本申请实施例的目的、技术方案和优点更加清楚,下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。
当正在为远端终端设备提供中继服务的中继终端设备需要切换提供服务的网络设备时,如何处理中继UE与远端UE之间的通信连接关系,目前还没有相应的解决方案,若直接断开连接,远端终端设备将重新搜索能够提供服务的设备。中继终端可能由于与当前服务小区之间的通信质量变差而导致切换,但与远端终端之间的通信质量可能仍然较高,在中继终端完成切换网络设备后也许仍然能为远端终端提供中继服务。 因此,本申请提出在中继终端发生服务小区切换的情况下,可以通知远端终端设备切换至与中继终端相同的目标网络设备。能够避免因中继终端设备发生切换,造成远端终端设备重新搜索提供服务的设备,能够提高资源利用率,减小终端设备的功率消耗。
图2是本申请实施例提供的通信方法200的一个示意性流程图。
在图2所示的实施例中,第一终端设备与第二终端设备建立了直连通信(或侧行链路通信),第一终端设备为第二终端设备提供中继服务。也就是说,该第一终端设备可以作为中继终端设备(relay UE)为作为远端终端设备(remote UE)的第二终端设备提供中继服务。该第二终端设备的数据可以通过PC5接口传递至第一终端设备,第一终端设备再通过第一终端设备与第一网络设备之间的Uu接口将远端终端设备的数据发送至网络。
S210,第一网络设备向第一终端设备第一信息,该第一信息用于指示第一终端设备切换至第二网络设备。
相应地,第一终端设备接收来自第一网络设备的该第一信息。
作为示例非限定,该第一信息承载在第一网络设备向第一终端设备发送的第一切换消息(或者称为第一切换命令)中。例如,当第一终端设备满足切换条件时,第一网络设备向第一终端设备发送该第一切换消息。如第一终端设备与第一网络设备之间的通信质量下降,且第一终端设备测量并上报的第二网络设备的小区信号质量满足第一终端设备的切换条件,第一网络设备确定将该第一终端设备切换至第二网络设备,并向第一终端设备发送该第一切换消息。可选地,第一信息可以包括第二网络设备的标识,第一切换消息可以包括用于接入第二网络设备的相关配置信息等,本申请对此不做限定。
可选地,该第一信息可以是显示指示切换也可以是隐式指示切换。
例如,第一信息直接指示第一终端设备切换至第二网络设备,第一终端设备接收到该第一信息后执行切换。或者,第一信息隐式指示切换可以是,该第一信息包括切换至第二网络设备的切换条件,在该切换条件被满足的情况下,第一终端设备切换至第二网络设备,但本申请不限于此。
需要说明的是,本申请中第一终端设备切换至第二网络设备具体可以理解为第一终端设备切换至第二网络设备管理的小区,将第二网络设备管理的小区作为第一终端设备的服务小区。
S220,第一终端设备向第二终端设备发送第二信息,该第二信息用于指示第二终端设备切换至第二网络设备。
相应地,第二终端设备接收来自第一终端设备的该第二信息。
一种实施方式中,第一网络设备向第一终端设备发送第二信息,第一终端设备将该第二信息转发给第二终端设备。
也就是说,该第二信息为第一网络设备通过第一终端设备中继给第二终端设备的信息。由第一网络设备确定是否指示第二终端设备也切换至第二网络设备。
例如,第一网络设备可以基于第一终端设备和第二终端设备的位置信息,或,当前第一终端设备与第二终端设备之间的通信质量情况,确定第一终端设备即使切换至第二网络设备仍能为第二终端设备提供服务。则第一网络设备向第一终端设备发送该第二信息,以通过第一终端设备转发给第二终端设备,通知第二终端设备通过第一终端设备切换至第二网络设备,也就是说,第二终端设备可以通过第一终端设备获取第二网络设备的网络服务。或者第一网络设备还可以根据其他条件发送该第二信息给第二终端设备,本申请对此不做限定。
可选地,该第二信息可以承载在第一网络设备向第一终端设备发送的第二切换消息中,第一终端设备将该第二切换消息转发给第二终端设备。或者,该第二信息承载在 第一切换消息中,第一终端设备接收到该第一切换消息后,将其中需要发送给第二终端设备的该第二信息转发给第二终端设备。
另一种实施方式中,第一终端设备根据第一信息,确定向第二终端设备发送该第二信息。
也就是说,由第一终端设备确定是否指示第二终端设备切换至第二网络设备。若确定指示第二终端设备切换至第二网络设备,则第一终端设备生成第二信息,并发送给第二终端设备。
例如,第一终端设备接收到第一信息后,确定将切换至第二网络设备。然而,第一终端设备当正在为第二终端设备提供中继服务,第一终端设备可以根据第一终端设备与第二终端设备之间的通信质量确定能够在切换至第二网络设备后,仍为第二终端设备提供中继服务。如第一终端设备虽然因移动与第一网络设备之间的通信质量变差,而与第二终端设备之间的通信质量仍然保持较高水平,则第一终端设备可以向第二终端设备发送第二信息,通知第二终端设备切换至第二网络设备,也就是说,第二终端设备可以通过第一终端设备获取第二网络设备的网络服务。或者,第一终端设备还可以根据第二终端设备的位置信息或第一终端设备与第二终端设备的相对位置信息,或其他信息确定是否向第二终端设备发送第二信息,本申请对此不做限定。
可选地,第二信息具体指示第二终端设备通过第一终端设备切换至第二网络设备。
根据上述方案,在中继终端设备发生切换的情况下,可以根据条件通知远端终端设备切换提供服务的网络设备,使得中继终端能够为远端设备继续提供中继服务,能够避免因中继终端设备发生切换,造成远端终端设备重新搜索提供服务的设备,能够减小远端终端设备的功耗,避免不必要的资源浪费。
由于第一终端设备需要由第一网络设备切换至第二网络设备,因此,由第一网络设备为第一终端设备、第二终端设备配置的一些资源(例如,用户面(user plane,UP)的一些资源)可能不能继续使用,在第二终端设备接收到第二信息后,如何通过第一终端设备切换至第二网络设备,可以包括但不限于以下两种实施方式。
下面结合图3和图4分别介绍这两种实施方式。
方式一
第一终端设备和第二终端设备断开连接后进行连接重建立,通过连接重建立实现第二网络设备的资源配置。
一种实施方式中,可以由协议规定中继终端设备(即第一终端设备)接收到第一信息的情况下断开与远端终端设备(即第二终端设备)之间的通信连接,或者,协议规定远端终端设备接收到第二信息后断开与中继终端设备之间的通信连接。
另一种实施方式中,所述第一信息还用于指示所述第一终端设备断开与所述第二终端设备之间的通信连接,或者,所述第二信息还用于指示所述第二终端设备断开与所述第一终端设备之间的通信连接。
图3是本申请实施例提供的另一个通信方法300的示意性流程图。
S310,第一终端设备和第二终端设备断开通信连接。
该通信连接可以是第一终端设备和第二终端设备之间的直连通信连接,如PC5接口连接。
可选地,第一终端设备和第二终端设备断开通信连接,可以包括释放部分通信资源,例如物理层数据通信资源,也可以保留部分资源。
例如,第一终端设备可以不释放第二终端设备的相关信息,重建立连接后不需要重新获取,第二终端设备可以保存第一终端设备相关信息以及重新建立连接的相关信息,如同步信号的相关信息或接入资源等,以便第二终端设备能够根据存储的相关信息在S320中请求连接重建立。能够避免资源浪费,提高连接重建的效率。
一种实施方式中,第一终端设备发送第二信息后,第二终端设备接收到第二信息后,执行断开第一终端设备和第二终端设备之间的通信连接。
例如,第一终端设备发送第二信息后断开与第二终端设备之间的通信连接,如停止检测来自第二终端设备的数据信息,停止为终端设备提供数据的中继服务等,第二终端设备接收到该第二信息后断开与第二终端设备之间的通信连接,如停止向第一终端设备发送数据信息等,但本申请不限于此。
另一种实施方式中,第一终端设备向第二终端设备发送第三信息,用于指示断开第一终端设备与第二终端设备之间的通信连接。
例如,由第一终端设备确定切换开始后,向第二终端设备发送第三信息等,但本申请不限于此。
另一种实施方式中,第二终端设备向第一终端设备发送第四信息,用于指示断开第一终端设备与第二终端设备之间的通信连接。
作为示例非限定,该第三信息和/或第四信息为PC5信令(PC5Signaling,PC5-S)或PC5无线接入控制信令(PC5 radio resource control,RRC)。
根据上述方案,通过第三信息或第四信息,使得第一终端设备和第二终端设备对断开第一终端设备与第二终端设备之间的通信连接达成共识,能够避免资源浪费。
S320,第一终端设备切换至第二网络设备。
第一终端设备执行由第一网络设备切换至第二网络设备。即第一网络设备作为第一终端设备的源网络设备,第一终端设备由第一网络设备切换至作为目标网络设备的第二网络设备。
例如,由第一终端设备发起接入第二网络设备的随机接入过程,如在第二网络设备的随机接入信道(random access channel,RACH)发送随机接入前导码序列,以接入第二网络设备。在第二网络设备通过RRC消息通知第一终端设备相应的网络配置后,第一终端设备向第二网络设备发送切换完成确认消息(handover comfirmation,HO-confirm),从而完成第一终端设备向第二网络设备的切换,但本申请不限于此。
S330,第二终端设备向第一终端设备发送第五信息,用于请求重建立第一终端设备和第二终端设备之间的通信连接。
相应地,第一终端设备接收来自第二终端设备的第五信息。也就是说,该第五信息用于建立第一终端设备与第二终端设备之间的PC5连接。
作为示例非限定,该第五信息为PC5信令(PC5Signaling,PC5-S)或PC5无线接入控制信令(PC5 radio resource control,RRC)。可选地,该第五信息承载在连接重建立请求(re-connect request)消息中。需要说明的是,本申请对S330和S320的执行顺序不做限定,根据具体实施S330可以在S320之前执行,也可以在S320之后执行。
S340,第一终端设备向第二终端设备发送第六信息,用于指示第一终端设备和第二终端设备之间的通信连接重建立完成。
相应地,第二终端设备接收来自第一终端设备的第六信息。在第一终端设备接收到来自第二终端设备发送的用于请求连接重建立的第五信息的情况下,当第一终端设备完成切换至第二网络设备后,第一终端设备可以与第二网络设备进行交互,完成第一终端设备为第二终端设备提供中继服务的相关配置,并向第二终端设备发送第六信息,以通知第二终端设备通信连接重建立完成。第二终端设备接收到第六信息后,可以确定能够继续通过第一终端设备提供的中继服务与网络进行通信。
作为示例非限定,该第六信息承载在连接重建立确认(re-connect ACK)消息中。
可选地,第一终端设备还向第二终端设备发送连接重建立后的相关配置信息。
第二终端设备接收到该配置信息后,根据该配置信息与第一终端设备进行通信。
可选地,在第二终端设备接收到第二信息后的第一时间间隔内接收到该第六信息的 情况下,第二终端设备确定成功切换至第二网络设备;或者,在第二终端设备接收到第二信息后的第一时间间隔内未接收到该第六信息的情况下,第二终端设备确定切换至第二网络设备失败。可选地,该第一时间间隔可以是协议规定的或网络配置的。
可选地,第二终端设备在接收到第二信息后启动第一计时器(或者可以是计数器、定时器等其他计量时间的器件),第一计时器的计时时长为第一时间间隔。
在第二终端设备接收到该第六信息,且第一计时器未超时的情况下,第二终端设备确定成功切换至第二网络设备,并停止第一计时器;或者,若第一计时器超时第二终端设备确定切换至第二网络设备失败。也就是说,在第一计时器运行期间未接收到第六信息的情况下,第二终端设备确定切换至第二网络设备失败。
在第二终端设备确定切换至第二网络设备失败后,第二终端设备可以再次触发链接重建立过程,如再次向第一终端设备发送连接重建立消息。或者,第二终端设备可以通过小区搜索过程,搜索能够为第二终端设备提供服务的小区,并通过随机接入过程接入网络。再或者,第二终端设备可以搜索能够提供中继通信服务的其他终端设备,与该终端设备建立侧行链路链接,通过终端设备与网络进行通信,但本申请不限于此。
根据上述方案,通过第一时间间隔限制第二终端设备通过第一终端设备切换至第二网络设备的时间,能够避免因长时间未完成通过第一终端设备切换至第二网络设备,而使得第二终端设备无法通信的情况。
可选地,S350,第二终端设备向第一终端设备发送切换完成消息,用于确认完成第二终端设备切换至第二网络设备。
相应地,第一终端设备接收第二终端设备的切换完成消息。
第二终端设备在与第一终端设备的连接重建立完成后,可以通过第一终端设备通知第二网络设备切换完成,以使第二终端设备和第二网络设备之间达成共识,从而进行后续通信。
可选地,S360,第一终端设备向第二网络设备发送该切换完成消息。
相应地,第二网络设备接收来自第一终端设备的该切换完成消息。
例如,第一终端设备在S350中接收到来自的第二终端设备该切换完成消息后,向第二网络设备转发该切换完成消息,以使第二终端设备和第二网络设备之间达成共识,从而进行后续通信。或者,第二终端设备在接收第一终端设备的第六信息后发送确认信息,第一终端设备可以根据该确定信息,确定第二终端设备完成切换至第二网络设备,并通过该切换完成消息通知第二网络设备,但本申请不限于此。
方式二
第一终端设备和第二终端设备进行RLC重建立和/或MAC重配置,通过RLC重建立和/或MAC重配置实现第二网络设备的资源配置。
例如,网络侧保留第二终端设备的控制面资源,在第一终端设备切换至第二网络设备后,网络为第二终端设备重配置用户面资源,第一终端设备和第二终端设备根据重配置的用户面资源,进行RLC重建立和/或MAC重配置,但本申请不限于此。
根据上述方案,在第一终端设备完成切换至第二网络设备后,第一终端设备根据第二网络设备时的配置,与第二终端设备进行直连通信连接重建立,以实现第二终端设备通过第一终端设备切换至第二网络设备。能够实现在中继终端设备发生切换的情况下,远端终端设备通过中继终端设备切换至同一网络设备,能够避免因中继终端设备发生切换,造成远端终端设备重新搜索提供服务的设备,能够减小远端终端设备的功耗,避免不必要的资源浪费。
图4是本申请实施例提供的另一个通信方法400的示意性流程图。
一种实施方式中,可以由协议规定中继终端设备(即第一终端设备)接收到第一信息的情况下进行与远端终端设备(即第二终端设备)之间的RLC重建立和/或MAC重 配置,或者,协议规定远端终端设备接收到第二信息后进行与中继终端设备之间的RLC重建立和/或MAC重配置。
另一种实施方式中,所述第一信息还用于指示所述第一终端设备进行与所述第二终端设备之间的RLC重建立和/或MAC重配置,或,所述第二信息还用于指示所述第二终端设备进行与所述第一终端设备之间的RLC重建立和/或MAC重配置。
例如,上述方式一还是该方式二为实现第二终端设备通过第一终端设备切换至第二网络设备的可选方式,可以由第一网络设备和/或第一终端设备根据第二终端设备的情况,确定所采用的方式。若由第一网络设备确定切换方式,则由第一网络设备通过第一信息通知第一终端设备或通过第二信息通知第二终端设备,若由第一终端设备确定切换方式,则由第一终端设备通过第二信息通知第二终端设备,但本申请不限于此。
S410,第一终端设备由第一网络设备切换至第二网络设备。
第一网络设备作为第一终端设备的源网络设备,第一终端设备由第一网络设备切换至作为目标网络设备的第二网络设备。
例如,由第一终端设备发起接入第二网络设备的随机接入过程,如在第二网络设备的RACH发送随机接入前导码序列,以接入第二网络设备。在第二网络设备通过RRC消息通知第一终端设备相应的网络配置后,第一终端设备向第二网络设备发送切换完成确认消息(handover comfirmation,HO-confirm),从而完成第一终端设备向第二网络设备的切换,但本申请不限于此。
S420,第一终端设备和第二终端设备进行RLC重建立和/或MAC重配置。
当第一终端设备完成切换至第二网络设备后,第一终端设备可以与第二网络设备进行交互,完成第一终端设备为第二终端设备提供中继服务的相关配置(例如,第二终端设备的用户面配置等,但本申请不限于此)。从而第一终端设备可以基于该中继服务的相关配置,与第二终端设备进行RLC重建立(RLC re-establish)和/或MAC重配置(MAC reset或MAC reconfiguration)。
S430,第一终端设备向第二终端设备发送第七信息,用于指示完成第一终端设备切换至第二网络设备。
相应地,第二终端设备接收来自第一终端设备的该第七信息。
第二终端设备接收到第七信息后,可以确定第一终端设备完成切换至第二网络设备。从而可以确定RLC重建立完成和/或MAC重配置完成,能够继续通过第一终端设备提供的中继服务与网络进行通信。
可选地,在第二终端设备接收到第二信息后的第二时间间隔内接收到该第七信息的情况下,第二终端设备确定成功切换至第二网络设备;或者,在第二终端设备接收到第二信息后的第二时间间隔内未接收到该第七信息的情况下,第二终端设备确定切换至第二网络设备失败。可选地,该第二时间间隔可以是协议规定的或网络配置的。
可选地,第二终端设备在接收到第二信息后启动第二计时器(或者可以是计数器、定时器等其他计量时间的器件),第二计时器的计时时长为第二时间间隔。
在第二终端设备接收到该第七信息,且该第二计时器未超时的情况下,第二终端设备确定成功切换至第二网络设备,并停止第二计时器;或者,若第二计时器超时,第二终端设备确定切换至第二网络设备失败。也就是说,在第二计时器运行期间未收到第七信息的情况下,第二终端设备确定切换至第二网络设备失败。
在第二终端设备确定切换至第二网络设备失败后,第二终端设备可以触发链接重建立过程,如向第一终端设备发送连接重建立消息。或者,第二终端设备可以通过小区搜索过程,搜索能够为第二终端设备提供服务的小区,并通过随机接入过程介入网络。再或者,第二终端设备可以搜索能够提供中继通信服务的其他终端设备,与该终端设备建立侧行链路链接,通过终端设备与网络进行通信,但本申请不限于此。根据上述 方案,通过第二时间间隔限制第二终端设备通过第一终端设备切换至第二网络设备的时间,能够避免因长时间未完成通过第一终端设备切换至第二网络设备,而使得第二终端设备无法通信的情况。
可选地,S440,第二终端设备向第一终端设备发送切换完成消息,用于确认完成第二终端设备切换至第二网络设备。
相应地,第一终端设备接收第二终端设备的切换完成消息。
第二终端设备在与第一终端设备的连接重建立完成后,可以通过第一终端设备通知第二网络设备切换完成,以使第二终端设备和第二网络设备之间达成共识,从而进行后续通信。
可选地,S450,第一终端设备向第二网络设备发送该切换完成消息。
相应地,第二网络设备接收来自第一终端设备的该切换完成消息。
一种实施方式中,第一终端设备在S440中接收到来自的第二终端设备该切换完成消息后,向第二网络设备转发该切换完成消息,以使第二终端设备和第二网络设备之间达成共识,从而进行后续通信。
另一种实施方式中,第二终端设备在接收第一终端设备的第七信息后发送确认信息,第一终端设备可以根据该确认信息,确定第二终端设备完成切换至第二网络设备,并通过该切换完成消息通知第二网络设备。
根据上述方案,在第一终端设备完成切换至第二网络设备后,第一终端设备根据第二网络设备时的配置,与第二终端设备进行RLC重建立和/或MAC重配置,以实现第二终端设备通过第一终端设备切换至第二网络设备。能够实现在中继终端设备发生切换的情况下,远端终端设备通过中继终端设备切换至同一网络设备,能够避免因中继终端设备发生切换,造成远端终端设备重新搜索提供服务的设备,能够减小远端终端设备的功耗,避免不必要的资源浪费。
需要说明的是,图2、图3、图4是实施例在具体实施中可以选择其中的全部或部分步骤进行实施,还可以调整图示中步骤的顺序进行实施,图示中各步骤的执行顺序可以由各个步骤之间的逻辑关系决定,应理解,各个步骤的标号不应对执行顺序构成限定作用。执行图示中的部分步骤或调整步骤的顺序进行具体实施,均落在本申请的保护范围内。
以上,结合图2至图4详细说明了本申请实施例提供的方法。以下,结合图5至图7详细说明本申请实施例提供的装置。
图5是本申请实施例提供的通信装置的示意性框图。如图5所示,该通信装置500可以包括处理单元510和收发单元520。
在一种可能的设计中,该通信装置500可对应于上文方法实施例中的终端设备(例如,第一终端设备或第二终端设备),或者配置于(或用于)终端设备(例如,第一终端设备或第二终端设备)中的芯片。
应理解,该通信装置500可对应于根据本申请实施例的方法200、300、400中的第一终端设备或第二终端设备,该通信装置500可以包括用于执行图2、图3、图4、中的方法200、300、400中第一终端设备或第二终端设备执行的方法的单元。并且,该通信装置500中的各单元和上述其他操作和/或功能分别为了实现图2、图3、图4、中的方法200、300、400的相应流程。
还应理解,该通信装置500为配置于(或用于)终端设备中的芯片时,该通信装置500中的收发单元520可以为芯片的输入/输出接口或电路,该通信装置500中的处理单元510可以为芯片中的处理器。
可选地,通信装置500还可以包括处理单元510,该处理单元510可以用于处理指令或者数据,以实现相应的操作。
可选地,通信装置500还可以包括存储单元530,该存储单元530可以用于存储指令或者数据,处理单元510可以执行该存储单元中存储的指令或者数据,以使该通信装置实现相应的操作,该通信装置500中的该通信装置500中的收发单元520为可对应于图6中示出的终端设备600中的收发器610,存储单元530可对应于图6中示出的终端设备600中的存储器。
应理解,各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明,为了简洁,在此不再赘述。
还应理解,该通信装置500为终端设备时,该通信装置500中的收发单元520为可通过通信接口(如收发器或输入/输出接口)实现,例如可对应于图6中示出的终端设备600中的收发器610,该通信装置500中的处理单元510可通过至少一个处理器实现,例如可对应于图6中示出的终端设备600中的处理器620,该通信装置500中的处理单元510可通过至少一个逻辑电路实现。
在另一种可能的设计中,该通信装置500可对应于上文方法实施例中的网络设备(例如,第一网络设备或第二网络设备),例如,或者配置于(或用于)网络设备(例如,第一网络设备或第二网络设备)中的芯片。
应理解,该通信装置500可对应于根据本申请实施例的方法200、300、400中的第一网络设备或第二网络设备,该通信装置500可以包括用于执行图2、图3、图4中的方法200、300、400中第一网络设备执行的方法的单元或第二网络设备执行的方法的单元。并且,该通信装置500中的各单元和上述其他操作和/或功能分别为了实现图2、图3、图4中的方法200、300、400的相应流程。
还应理解,该通信装置500为配置于(或用于)网络设备中的芯片时,该通信装置500中的收发单元为芯片中的输入/输出接口或电路,该通信装置500中的处理单元510可为芯片中的处理器。
可选地,通信装置500还可以包括处理单元510,该处理单元510可以用于处理指令或者数据,以实现相应的操作。
可选地,通信装置500还可以包括存储单元530,该存储单元可以用于存储指令或者数据,处理单元可以执行该存储单元530中存储的指令或者数据,以使该通信装置实现相应的操作。该通信装置500中的存储单元530为可对应于图7中示出的网络设备700中的存储器。
应理解,各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明,为了简洁,在此不再赘述。
还应理解,该通信装置500为网络设备时,该通信装置500中的收发单元520为可通过通信接口(如收发器或输入/输出接口)实现,例如可对应于图7中示出的网络设备700中的收发器710,该通信装置500中的处理单元510可通过至少一个处理器实现,例如可对应于图7中示出的网络设备700中的处理器720,该通信装置500中的处理单元510可通过至少一个逻辑电路实现。
图6是本申请实施例提供的终端设备600的结构示意图。该终端设备600可应用于如图1所示的系统中,执行上述方法实施例中终端设备的功能。如图所示,该终端设备600包括处理器620和收发器610。可选地,该终端设备600还包括存储器。其中,处理器620、收发器610和存储器之间可以通过内部连接通路互相通信,传递控制和/或数据信号,该存储器用于存储计算机程序,该处理器620用于执行该存储器中的该计算机程序,以控制该收发器610收发信号。
上述处理器620可以和存储器可以合成一个处理装置,处理器620用于执行存储器中存储的程序代码来实现上述功能。具体实现时,该存储器也可以集成在处理器620中,或者独立于处理器620。该处理器620可以与图5中的处理单元对应。
上述收发器610可以与图5中的收发单元对应。收发器610可以包括接收器(或称接收机、接收电路)和发射器(或称发射机、发射电路)。其中,接收器用于接收信号,发射器用于发射信号。
应理解,图6所示的终端设备600能够实现图2、图3、图4中的方法200、300、400实施例中涉及终端设备的各个过程。终端设备600中的各个模块的操作和/或功能,分别为了实现上述方法实施例中的相应流程。具体可参见上述方法实施例中的描述,为避免重复,此处适当省略详细描述。
上述处理器620可以用于执行前面方法实施例中描述的由终端设备内部实现的动作,而收发器610可以用于执行前面方法实施例中描述的终端设备向网络设备发送或从网络设备接收的动作。具体请见前面方法实施例中的描述,此处不再赘述。
可选地,上述终端设备600还可以包括电源,用于给终端设备中的各种器件或电路提供电源。
除此之外,为了使得终端设备的功能更加完善,该终端设备600还可以包括输入单元、显示单元、音频电路、摄像头和传感器等中的一个或多个,该音频电路还可以包括扬声器、麦克风等。
图7是本申请实施例提供的网络设备的结构示意图,该网络设备700可应用于如图1所示的系统中,执行上述方法实施例中网络设备的功能。例如可以为网络设备的相关结构的示意图。
应理解,图7所示的网络设备700能够实现图2、图3、图4中的方法200、300、400中涉及网络设备的各个过程。网络设备700中的各个模块的操作和/或功能,分别为了实现上述方法实施例中的相应流程。具体可参见上述方法实施例中的描述,为避免重复,此处适当省略详细描述。
应理解,图7所示出的网络设备700仅为网络设备的一种可能的架构,而不应对本申请构成任何限定。本申请所提供的方法可适用于其他架构的网络设备。例如,包含CU、DU和AAU的网络设备等。本申请对于网络设备的具体架构不作限定。
本申请实施例还提供了一种处理装置,包括处理器和接口;该处理器用于执行上述任一方法实施例中的方法。
应理解,上述处理装置可以是一个或多个芯片。例如,该处理装置可以是现场可编程门阵列(field programmable gate array,FPGA),可以是专用集成芯片(application specific integrated circuit,ASIC),还可以是系统芯片(system on chip,SoC),还可以是中央处理器(central processor unit,CPU),还可以是网络处理器(network processor,NP),还可以是数字信号处理电路(digital signal processor,DSP),还可以是微控制器(micro controller unit,MCU),还可以是可编程控制器(programmable logic device,PLD)或其他集成芯片。
在实现过程中,上述方法的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成,或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器,闪存、只读存储器,可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器,处理器读取存储器中的信息,结合其硬件完成上述方法的步骤。为避免重复,这里不再详细描述。
应注意,本申请实施例中的处理器可以是一种集成电路芯片,具有信号的处理能力。在实现过程中,上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开 的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成,或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器,闪存、只读存储器,可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器,处理器读取存储器中的信息,结合其硬件完成上述方法的步骤。
可以理解,本申请实施例中的存储器可以是易失性存储器或非易失性存储器,或可包括易失性和非易失性存储器两者。其中,非易失性存储器可以是只读存储器(read-only memory,ROM)、可编程只读存储器(programmable ROM,PROM)、可擦除可编程只读存储器(erasable PROM,EPROM)、电可擦除可编程只读存储器(electrically EPROM,EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory,RAM),其用作外部高速缓存。通过示例性但不是限制性说明,许多形式的RAM可用,例如静态随机存取存储器(static RAM,SRAM)、动态随机存取存储器(dynamic RAM,DRAM)、同步动态随机存取存储器(synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM,DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM,SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM,DR RAM)。应注意,本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本申请实施例提供的方法,本申请还提供一种计算机程序产品,该计算机程序产品包括:计算机程序代码,当该计算机程序代码由一个或多个处理器执行时,使得包括该处理器的装置执行上述实施例中的方法。
根据本申请实施例提供的方法,本申请还提供一种计算机可读存储介质,该计算机可读存储介质存储有程序代码,当该程序代码由一个或多个处理器运行时,使得包括该处理器的装置执行上述实施例中的方法。
根据本申请实施例提供的方法,本申请还提供一种系统,其包括前述的一个或多个网络设备。还系统还可以进一步包括前述的一个或多个终端设备。
在本申请所提供的几个实施例中,应该理解到,所揭露的设备和方法,可以通过其它的方式实现。例如,以上所描述的设备实施例仅仅是示意性的,例如,该模块的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个模块可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,模块的间接耦合或通信连接,可以是电性,机械或其它的形式。
在上述终端设备和网络设备的具体实现中,应理解,处理器可以是中央处理单元(英文:Central Processing Unit,简称:CPU),还可以是其他通用处理器、数字信号处理器(英文:Digital Signal Processor,简称:DSP)、专用集成电路(英文:Application Specific Integrated Circuit,简称:ASIC)等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请所公开的方法的步骤可以直接体现为硬件处理器执行完成,或者用处理器中的硬件及软件模块组合执行完成。
实现上述各方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成。前述的程序可以存储于一可读取存储器中。该程序在执行时,执行包括上述各方法实施例的步骤;而前述的存储器(存储介质)包括:只读存储器(英文:read-only memory,简称:ROM)、RAM、快闪存储器、硬盘、固态硬盘、磁带(英文:magnetic tape)、软盘(英文:floppy disk)、光盘(英文:optical disc)及其任意组合。
以上所述,仅为本发明的具体实施方式,但本发明的保护范围并不局限于此,任 何熟悉本技术领域的技术人员在本发明揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本发明的保护范围之内。因此,本发明的保护范围应以所述权利要求的保护范围为准。

Claims (67)

  1. 一种通信方法,其特征在于,包括:
    第一终端设备接收来自第一网络设备的第一信息,所述第一信息用于指示所述第一终端设备切换至第二网络设备;
    所述第一终端设备向第二终端设备发送第二信息,所述第二信息用于指示所述第二终端设备切换至所述第二网络设备,其中,所述第一终端设备为所述第二终端设备提供中继服务。
  2. 根据权利要求1所述的方法,其特征在于,所述方法还包括:
    所述第一终端设备接收来自所述第一网络设备的所述第二信息。
  3. 根据权利要求1所述的方法,其特征在于,所述第一终端设备向第二终端设备发送第二信息之前,所述方法还包括:
    所述第一终端设备根据所述第一信息,确定向所述第二终端设备发送所述第二信息。
  4. 根据权利要求1至3中任一项所述的方法,其特征在于,所述方法还包括:
    所述第一终端设备向所述第二终端设备发送第三信息,所述第三信息用于指示断开所述第一终端设备与所述第二终端设备之间的通信连接。
  5. 根据权利要求4所述的方法,其特征在于,所述第一信息还用于指示所述第一终端设备断开与所述第二终端设备之间的通信连接。
  6. 根据权利要求1至3中任一项所述的方法,其特征在于,所述方法还包括:
    所述第一终端设备接收来自所述第二终端设备的第四信息,所述第四信息用于指示断开所述第一终端设备与所述第二终端设备之间的通信连接。
  7. 根据权利要求6所述的方法,其特征在于,所述第二信息还用于指示所述第二终端设备断开与所述第一终端设备之间的通信连接。
  8. 根据权利要求1至7中任一项所述的方法,其特征在于,所述方法还包括:
    所述第一终端设备接收来自所述第二终端设备的第五信息,所述第五信息用于请求重建立所述第一终端设备和所述第二终端设备之间的通信连接。
  9. 根据权利要求8所述的方法,其特征在于,所述方法还包括:
    所述第一终端设备与所述第二网络设备建立通信连接后,所述第一终端设备向所述第二终端设备发送第六信息,所述第六信息用于指示所述第一终端设备和所述第二终端设备之间的通信连接建立完成。
  10. 根据权利要求1至3中任一项所述的方法,其特征在于,所述方法还包括:
    所述第一终端设备与所述第二终端设备进行无线链路控制RLC重建立和/或媒体接入控制MAC重配置。
  11. 根据权利要求10所述的方法,其特征在于,所述第一信息还用于指示所述第一终端设备进行所述第一终端设备与所述第二终端设备之间的RLC重建立或MAC重配置,和/或,所述第二信息还用于指示所述第二终端设备进行所述第一终端设备与所述第二终端设备之间的RLC重建立或MAC重配置。
  12. 根据权利要求1至11中任一项所述的方法,其特征在于,所述方法还包括:
    所述第一终端设备向所述第二终端设备发送第七信息,所述第七信息用于指示完成所述第一终端设备切换至所述第二网络设备。
  13. 根据权利要求1至12中任一项所述的方法,其特征在于,所述方法还包括:
    所述第一终端设备接收来自所述第二终端设备的切换完成消息,所述切换完成消息用于确认完成所述第二终端设备切换至所述第二网络设备;
    所述第一终端设备向所述第二网络设备发送所述切换完成消息。
  14. 一种通信方法,其特征在于,包括:
    第二终端设备接收来自第一终端设备的第二信息,所述第二信息用于指示所述第二 终端设备切换至第二网络设备,其中,所述第一终端设备为所述第二终端设备提供中继服务。
  15. 根据权利要求14所述的方法,其特征在于,所述方法还包括:
    所述第二终端设备接收来自所述第一终端设备发送第三信息,所述第三信息用于指示断开所述第一终端设备与所述第二终端设备之间的通信连接。
  16. 根据权利要求14所述的方法,其特征在于,所述方法还包括:
    所述第二终端设备向所述第一终端设备发送第四信息,所述第四信息用于指示断开所述第一终端设备与所述第二终端设备之间的通信连接。
  17. 根据权利要求16所述的方法,其特征在于,所述第二信息还用于指示所述第二终端设备断开所述第一终端设备与所述第二终端设备之间的通信连接。
  18. 根据权利要求16或17所述的方法,其特征在于,所述方法还包括:
    所述第二终端设备向所述第一终端设备发送第五信息,所述第五信息用于请求重建立所述第一终端设备和所述第二终端设备之间的通信连接。
  19. 根据权利要求14至18中任一项所述的方法,其特征在于,所述方法还包括:
    所述第二终端设备接收来自所述第一终端设备的第六信息,所述第六信息用于指示所述第一终端设备和所述第二终端设备之间的通信连接建立完成。
  20. 根据权利要求14至19中任一项所述的方法,其特征在于,所述方法还包括:
    所述第二终端设备向所述第一终端设备发送切换完成消息,所述切换完成消息用于确认完成所述第二终端设备切换至所述第二网络设备。
  21. 根据权利要求14至20中任一项所述的方法,其特征在于,所述方法还包括:
    所述第二终端设备接收到所述第二信息后启动第一计时器,所述第一计时器的计时时长为第一时间间隔。
  22. 根据权利要求21所述的方法,其特征在于,所述方法还包括:
    在所述第二终端设备接收到第六信息,且所述第一计时器未超时的情况下,所述第二终端设备停止所述第一计时器,其中,所述第六信息用于指示所述第一终端设备和所述第二终端设备之间的通信连接建立完成。
  23. 根据权利要求21或22所述的方法,其特征在于,所述方法还包括:
    若第一定时器超时,所述第二终端设备确定所述第二终端设备切换至所述第二网络设备失败。
  24. 根据权利要求14所述的方法,其特征在于,所述方法还包括:
    所述第二终端设备与所述第一终端设备进行无线链路控制RLC重建立和/或媒体接入控制MAC重配置。
  25. 根据权利要求24所述的方法,其特征在于,所述第二信息还用于指示所述第二终端设备与所述第一终端设备进行RLC重建立和/或MAC重配置。
  26. 根据权利要求24或25所述的方法,其特征在于,所述方法还包括:
    所述第二终端设备接收来自所述第一终端设备的第七信息,所述第七信息用于指示完成所述第一终端设备切换至所述第二网络设备。
  27. 根据权利要求24至26中任一项所述的方法,其特征在于,所述方法还包括:
    所述第二终端设备向所述第一终端设备发送切换完成消息,所述切换完成消息用于确认完成所述第二终端设备切换至所述第二网络设备。
  28. 根据权利要求24至27中任一项所述的方法,其特征在于,所述方法还包括:
    所述第二终端设备接收到所述第二信息后启动第二计时器,所述第二计时器的计时时长为第二时间间隔。
  29. 根据权利要求28所述的方法,其特征在于,所述方法还包括:
    在所述第二终端设备接收到第七信息,且所述第二计时器未超时的情况下,所述第 二终端设备停止所述第二计时器,其中,所述第七信息用于指示完成所述第一终端设备切换至所述第二网络设备。
  30. 根据权利要求28或29所述的方法,其特征在于,所述方法还包括:
    若所述第二计时器超时,所述第二终端设备确定所述第二终端设备切换至所述第二网络设备失败。
  31. 一种通信方法,其特征在于,包括:
    第一网络设备向第一终端设备发送第一信息和第二信息,所述第一信息用于指示所述第一终端设备切换至第二网络设备,所述第二信息用于指示第二终端设备通过所述第一终端设备切换至所述第二网络设备,所述第一终端设备为所述第二终端设备提供中继服务。
  32. 一种通信装置,其特征在于,包括:
    收发模块,用于接收来自第一网络设备的第一信息,所述第一信息用于指示第一终端设备切换至第二网络设备;
    处理模块,用于根据所述第一信息,确定切换至所述第二网络设备;
    所述收发模块还用于向第二终端设备发送第二信息,所述第二信息用于指示所述第二终端设备切换至所述第二网络设备,其中,所述第一终端设备为所述第二终端设备提供中继服务。
  33. 根据权利要求32所述的装置,其特征在于,
    所述收发模块还用于接收来自所述第一网络设备的所述第二信息。
  34. 根据权利要求32所述的装置,其特征在于,在所述收发单元先所述第二终端设备发送所述第二信息之前,
    所述处理模块还用于根据所述第一信息,确定向所述第二终端设备发送所述第二信息。
  35. 根据权利要求32至34中任一项所述的装置,其特征在于,
    所述收发模块还用于向所述第二终端设备发送第三信息,所述第三信息用于指示断开所述第一终端设备与所述第二终端设备之间的通信连接。
  36. 根据权利要求35所述的装置,其特征在于,所述第一信息还用于指示所述第一终端设备断开与所述第二终端设备之间的通信连接。
  37. 根据权利要求32至34中任一项所述的装置,其特征在于,
    所述收发模块还用于接收来自所述第二终端设备的第四信息,所述第四信息用于指示断开所述第一终端设备与所述第二终端设备之间的通信连接。
  38. 根据权利要求37所述的装置,其特征在于,所述第二信息还用于指示所述第二终端设备断开与所述第一终端设备之间的通信连接。
  39. 根据权利要求32至38中任一项所述的装置,其特征在于,
    所述收发模块还用于接收来自所述第二终端设备的第五信息,所述第五信息用于请求重建立所述第一终端设备和所述第二终端设备之间的通信连接。
  40. 根据权利要求39所述的装置,其特征在于,
    所述第一终端设备与所述第二网络设备建立通信连接后,所述收发模块还用于向所述第二终端设备发送第六信息,所述第六信息用于指示所述第一终端设备和所述第二终端设备之间的通信连接建立完成。
  41. 根据权利要求32至34中任一项所述的装置,其特征在于,
    所述收发单元和/或所述处理单元还用于所述第一终端设备与所述第二终端设备进行无线链路控制RLC重建立和/或媒体接入控制MAC重配置。
  42. 根据权利要求41所述的装置,其特征在于,所述第一信息还用于指示所述第一终端设备进行所述第一终端设备与所述第二终端设备之间的RLC重建立或MAC重配 置,和/或,所述第二信息还用于指示所述第二终端设备进行所述第一终端设备与所述第二终端设备之间的RLC重建立或MAC重配置。
  43. 根据权利要求32至42中任一项所述的装置,其特征在于,
    所述收发模块还用于所述第二终端设备发送第七信息,所述第七信息用于指示完成所述第一终端设备切换至所述第二网络设备。
  44. 根据权利要求32至43中任一项所述的装置,其特征在于,
    所述收发模块还用于接收来自所述第二终端设备的切换完成消息,所述切换完成消息用于确认完成所述第二终端设备切换至所述第二网络设备;
    所述收发模块还用于向所述第二网络设备发送所述切换完成消息。
  45. 一种通信装置,其特征在于,包括:
    收发模块,用于接收来自第一终端设备的第二信息,所述第二信息用于指示第二终端设备切换至第二网络设备,其中,所述第一终端设备为所述第二终端设备提供中继服务;
    处理单元,用于根据所述第二信息,确定切换至所述第二网络设备。
  46. 根据权利要求45所述的装置,其特征在于,
    所述收发模块还用于接收来自所述第一终端设备发送第三信息,所述第三信息用于指示断开所述第一终端设备与所述第二终端设备之间的通信连接。
  47. 根据权利要求45所述的装置,其特征在于,
    所述收发模块还用于向所述第一终端设备发送第四信息,所述第四信息用于指示断开所述第一终端设备与所述第二终端设备之间的通信连接。
  48. 根据权利要求47所述的装置,其特征在于,所述第二信息还用于指示所述第二终端设备断开所述第一终端设备与所述第二终端设备之间的通信连接。
  49. 根据权利要求47或48所述的装置,其特征在于,
    所述收发模块还用于向所述第一终端设备发送第五信息,所述第五信息用于请求重建立所述第一终端设备和所述第二终端设备之间的通信连接。
  50. 根据权利要求45至49中任一项所述的装置,其特征在于,
    所述收发模块还用于接收来自所述第一终端设备的第六信息,所述第六信息用于指示所述第一终端设备和所述第二终端设备之间的通信连接建立完成。
  51. 根据权利要求45至50中任一项所述的装置,其特征在于,
    所述收发模块还用于向所述第一终端设备发送切换完成消息,所述切换完成消息用于确认完成所述第二终端设备切换至所述第二网络设备。
  52. 根据权利要求45至51中任一项所述的装置,其特征在于,
    所述收发模块还用于接收到所述第二信息后启动第一计时器,所述第一计时器的计时时长为第一时间间隔。
  53. 根据权利要求52所述的装置,其特征在于,
    所述处理单元还用于,在所述第二终端设备接收到第六信息,且所述第一计时器未超时的情况下,停止所述第一计时器,其中,所述第六信息用于指示所述第一终端设备和所述第二终端设备之间的通信连接建立完成。
  54. 根据权利要求52或53所述的装置,其特征在于,
    所述处理单元还用于,在第一定时器超时的情况下,确定所述第二终端设备切换至所述第二网络设备失败。
  55. 根据权利要求45所述的装置,其特征在于,
    所述收发单元和/或所述处理单元还用于进行所述第二终端设备与所述第一终端设备无线链路控制RLC重建立和/或媒体接入控制MAC重配置。
  56. 根据权利要求55所述的装置,其特征在于,所述第二信息还用于指示所述第二 终端设备与所述第一终端设备进行RLC重建立和/或MAC重配置。
  57. 根据权利要求55或56所述的装置,其特征在于,
    所述收发单元还用于接收来自所述第一终端设备的第七信息,所述第七信息用于指示完成所述第一终端设备切换至所述第二网络设备。
  58. 根据权利要求55至57中任一项所述的装置,其特征在于,
    所述收发单元还用于向所述第一终端设备发送切换完成消息,所述切换完成消息用于确认完成所述第二终端设备切换至所述第二网络设备。
  59. 根据权利要求55至58中任一项所述的装置,其特征在于,
    所述收发单元还用于接收到所述第二信息后启动第二计时器,所述第二计时器的计时时长为第二时间间隔。
  60. 根据权利要求59所述的装置,其特征在于,
    所述处理单元还用于,在所述第二终端设备接收到第七信息,且所述第二计时器未超时的情况下,停止所述第二计时器,其中,所述第七信息用于指示完成所述第一终端设备切换至所述第二网络设备。
  61. 根据权利要求59或60所述的装置,其特征在于,
    所述处理单元还用与,在第二计时器超时的情况下,确定所述第二终端设备切换至所述第二网络设备失败。
  62. 一种通信装置,其特征在于,包括:
    处理模块,用于确定第一信息和第二信息,所述第一信息用于指示第一终端设备切换至第二网络设备,所述第二信息用于指示第二终端设备切换至所述第二网络设备,所述第一终端设备为所述第二终端设备提供中继服务;
    收发单元,用于向所述第一终端设备发送第一信息和第二信息。
  63. 一种终端设备,其特征在于,包括:
    处理器、存储器、与终端设备进行通信的接口;
    所述存储器存储计算机执行指令;
    所述处理器执行所述存储器存储的计算机执行指令,使得所述处理器执行如权利要求1至30中任一项所述的通信方法。
  64. 一种网络设备,其特征在于,包括:
    处理器、存储器、与终端设备进行通信的接口;
    所述存储器存储计算机执行指令;
    所述处理器执行所述存储器存储的计算机执行指令,使得所述处理器执行如权利要求31所述的通信方法。
  65. 一种计算机可读存储介质,包括计算机程序,当其由一个或多个处理器执行时,使得包括所述处理器的装置执行如权利要求1至31中任一项所述的方法。
  66. 一种计算机程序产品,其特征在于,所述计算机程序产品包括:计算机程序,当所述计算机程序被运行时,使得计算机执行如权利要求1至31中任一项所述的方法。
  67. 一种芯片,其特征在于,包括至少一个处理器和通信接口;
    所述通信接口用于接收输入所述芯片的信号或从所述芯片输出的信号,所述处理器与所述通信接口通信且通过逻辑电路或执行代码指令用于实现如权利要求1至31中任一项所述的方法。
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