WO2022100667A1 - 基于侧链路中继的切换方法、装置、设备及存储介质 - Google Patents

基于侧链路中继的切换方法、装置、设备及存储介质 Download PDF

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Publication number
WO2022100667A1
WO2022100667A1 PCT/CN2021/130086 CN2021130086W WO2022100667A1 WO 2022100667 A1 WO2022100667 A1 WO 2022100667A1 CN 2021130086 W CN2021130086 W CN 2021130086W WO 2022100667 A1 WO2022100667 A1 WO 2022100667A1
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communication device
relay
base station
handover
handover request
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PCT/CN2021/130086
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English (en)
French (fr)
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金巴·迪·阿达姆·布巴卡
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维沃移动通信有限公司
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Publication of WO2022100667A1 publication Critical patent/WO2022100667A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user

Definitions

  • the present application belongs to the field of communication technologies, and in particular relates to a handover method, apparatus, device and storage medium based on a side link relay.
  • LTE Long Term Evolution
  • the Long Term Evolution (LTE) system has supported side links (sidelinks, or translated as secondary links, side links, etc.) since the 12th release, which is used for non-passage between terminals (User Equipment, UE).
  • the network-side device directly transmits data.
  • the 5th generation mobile communication (5G) New Radio (NR) system can be used in the working frequency band above 6 GHz that is not supported by LTE, and supports a larger working bandwidth, but the current version of the NR system only supports The interface between the base station and the terminal does not yet support the Sidelink interface for direct communication between terminals, and the NR handover does not support the handover process based on sidelink relay (SL relay).
  • 5G 5th generation mobile communication
  • NR New Radio
  • the purpose of the embodiments of the present application is to provide a handover method, apparatus, device and storage medium based on a side link relay, which can solve the problem of implementing handover in a scenario supporting SL relay.
  • a method for handover based on a side link relay is provided, applied to a first communication device, and the method includes:
  • the signal strength/quality of the link between the first communication device and the second communication device is lower than a preset threshold, measure a neighbor node
  • the second communication device is a side link relay SL relay or a base station
  • the neighbor node includes a neighboring cell and/or an adjacent side link relay SL relay of the second communication device.
  • a method for handover based on a side link relay is provided, applied to a second communication device, including:
  • a handover request is sent to the target node, where the handover request at least carries service slice information of the first communication device.
  • a handover method based on a side link relay is provided, applied to a target node, including:
  • the handover rejection request information is sent to the second communication device, where the handover rejection request information carries the reason for rejecting the handover request.
  • a switching apparatus based on a side link relay which is applied to the first communication device, and the apparatus includes:
  • a measurement unit configured to measure a neighbor node when the signal strength/quality of the link between the first communication device and the second communication device is lower than a preset threshold
  • a sending unit configured to send the measurement result to the second communication device
  • the second communication device is a side link relay SL relay or a base station
  • the neighbor node includes a neighboring cell and/or an adjacent side link relay SL relay of the second communication device.
  • a switching apparatus based on a side link relay which is applied to a second communication device, and the apparatus includes:
  • a target node determination unit configured to receive a measurement result sent by a first communication device, and determine a target node to be handed over by the first communication device based on the measurement result;
  • a handover request sending unit configured to send a handover request to the target node, where the handover request at least carries service slice information of the first communication device.
  • a side link relay-based switching device applied to a target node, and the device includes:
  • a handover request receiving unit configured to receive a handover request sent by a second communication device, where the handover request at least carries service slice information of the first communication device;
  • a handover request feedback unit configured to determine service slice information supporting the first communication device based on its own slice information, and send handover accepted request information to the second communication device, where the accepted handover request information carries the first communication device the random access channel RACH resource required by the communication device to switch to the target node;
  • the handover rejection request information is sent to the second communication device, where the handover rejection request information carries the reason for rejecting the handover request.
  • a terminal in a seventh aspect, includes a processor, a memory, and a program or instruction stored on the memory and executable on the processor, when the program or instruction is executed by the processor.
  • a network-side device in an eighth aspect, includes a processor, a memory, and a program or instruction stored on the memory and executable on the processor, the program or instruction being executed by the When executed by the processor, the steps of the method described in the second aspect or the steps of the method described in the third aspect are realized.
  • a readable storage medium is provided, and a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps as described in the first aspect are implemented.
  • a tenth aspect provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a terminal or a network-side device program or instruction, implementing the second The method described in the aspect, or the method described in the third aspect is implemented.
  • the side-link relay-based switching method, device, device, and storage medium provided by the embodiments of the present application realize terminal switching in the SL relay scenario, and can ensure the continuity and service quality of terminal services.
  • FIG. 1 is a block diagram of a wireless communication system to which an embodiment of the application can be applied;
  • FIG. 2 is one of the schematic flowchart diagrams of the handover method based on the side link relay provided by the embodiment of the present application;
  • FIG. 3 is a second schematic flowchart of a method for handover based on a side link relay provided by an embodiment of the present application
  • FIG. 4 is a third schematic flowchart of a method for handover based on a side link relay provided by an embodiment of the present application;
  • FIG. 5 is a schematic diagram of a Remote UE switching from an SL relay to a base station under the same base station provided by an embodiment of the present application;
  • FIG. 6 is a schematic diagram of a Remote UE switching from SL relay 1 to SL relay 2 under the same base station provided by an embodiment of the present application;
  • FIG. 7 is a schematic diagram of a Remote UE switching from an SL relay to a base station under different base stations provided by an embodiment of the present application;
  • FIG. 8 is a schematic diagram of a Remote UE switching from SL relay 1 to SL relay 2 under different base stations provided by an embodiment of the present application;
  • FIG. 9 is a schematic diagram of a Remote UE switching from a base station to an SL relay under the same base station provided by an embodiment of the present application;
  • FIG. 10 is a schematic diagram of a Remote UE switching from a base station to an SL relay under different base stations provided by an embodiment of the present application;
  • FIG. 11 is one of the schematic structural diagrams of the side link relay-based switching device provided by the embodiment of the present application.
  • FIG. 12 is the second schematic structural diagram of the side link relay-based switching device provided by the embodiment of the present application.
  • FIG. 13 is a third schematic structural diagram of a switching device based on a side link relay provided by an embodiment of the present application.
  • FIG. 14 is a schematic structural diagram of a communication device implementing an embodiment of the present application.
  • 15 is a schematic diagram of a hardware structure of a terminal implementing an embodiment of the present application.
  • FIG. 16 is a schematic diagram of a hardware structure of a network side device implementing an embodiment of the present application.
  • first, second and the like in the description and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and "first”, “second” distinguishes Usually it is a class, and the number of objects is not limited.
  • the first object may be one or multiple.
  • “and/or” in the description and claims indicates at least one of the connected objects, and the character “/" generally indicates that the associated objects are in an "or” relationship.
  • LTE Long Term Evolution
  • LTE-Advanced LTE-Advanced
  • LTE-A Long Term Evolution
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency-Division Multiple Access
  • system and “network” in the embodiments of the present application are often used interchangeably, and the described technology can be used not only for the above-mentioned systems and radio technologies, but also for other systems and radio technologies.
  • NR New Radio
  • NR terminology is used in most of the following description, although these techniques are also applicable to applications other than NR system applications, such as 6th generation ( 6th Generation, 6G) communication system.
  • FIG. 1 shows a block diagram of a wireless communication system to which the embodiments of the present application can be applied.
  • the wireless communication system includes a terminal 11 , a network side device 12 and a side link relay 13 .
  • the terminal 11 may also be called a terminal device or a user terminal (User Equipment, UE), and the terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital computer Assistant (Personal Digital Assistant, PDA), handheld computer, netbook, ultra-mobile personal computer (ultra-mobile personal computer, UMPC), mobile Internet device (Mobile Internet Device, MID), wearable device (Wearable Device) or vehicle-mounted device (VUE), pedestrian terminal (PUE) and other terminal-side devices, wearable devices include: bracelets, headphones, glasses, etc.
  • PDA Personal Digital Assistant
  • the network side device 12 may be a base station or a core network, wherein the base station may be referred to as a Node B, an evolved Node B, an access point, a Base Transceiver Station (BTS), a radio base station, a radio transceiver, a basic service Set (Basic Service Set, BSS), Extended Service Set (Extended Service Set, ESS), Node B, Evolved Node B (eNB), 5G Base Station (gNB) in 5G Network Architecture (next generation system), Home Node B , Home Evolved Node B, WLAN Access Point, WiFi Node, Transmitting Receiving Point (TRP) or some other suitable term in the field, as long as the same technical effect is achieved, the base station is not limited to a specific Technical vocabulary, it should be noted that in the embodiments of this application, only the base station in the NR system is used as an example, but the specific type of the base station
  • the sidelink relay (sidelink relay, SL relay) 13 may be a UE including a relay component configured to relay information from the network side device 12 to the terminal 11 and/or from the terminal 11 to the network side device 12 Relay information.
  • sidelink relay 13 may include a communication component configured to facilitate sidelink communication with terminal 11 .
  • the side link relay 13 and/or the terminal 11 may be in a connected state with the network side device 12 .
  • LTE sidelink is suitable for specific public safety affairs (such as emergency communication in fire sites or disaster sites such as earthquakes), or vehicle to everything (V2X) communication.
  • Vehicle networking communication includes various services, such as basic safety communication, advanced (autonomous) driving, formation, sensor expansion, and so on. Since LTE sidelink only supports broadcast communication, it is mainly used for basic security communication. Other advanced V2X services with strict QoS requirements in terms of delay and reliability will be supported by NR sidelink.
  • Sidelink link interface can also be called PC5 interface.
  • the current sidelink transmission is also mainly divided into several transmission forms: broadcast (broadcast), multicast (groupcast), and unicast (unicast).
  • Unicast as its name implies, is one-to-one transmission.
  • Multicast is a one-to-many transmission. Broadcasting is also a one to many transmission, but broadcasting does not have the concept that UEs belong to the same group.
  • Base station scheduling mode (Mode 1): BS schedules SL resource(s) to be used by UE for SL transmission(s). It is controlled by network side equipment (base station) and allocates resources to each UE.
  • the parameter sl-DCI-ToSL-Trans is used to define the time interval between the DCI reception moment and the first SL transmission moment scheduled by the DCI.
  • This parameter can be configured by RRC with a list of possible values, and then indicates in DCI which value is currently used by this DCI.
  • UE autonomous mode (Mode 2): Each UE autonomously selects resources.
  • a network slice as a feature of NR is described below.
  • a network slice is a logical network that provides specific network capabilities and network characteristics.
  • the so-called network slicing technology enables operators to use software to segment multiple "virtual" end-to-end networks on a hardware infrastructure. From the network access to the core network, from the core network to the transmission network, they are logically completely isolated, and are adapted to the technical requirements of their respective services. That is to say, network slicing technology can virtualize multiple logical sub-networks with different characteristics in the same 5G physical network, through differentiated settings and optimization, to meet the requirements of different 5G scenarios (such as industrial control, autonomous driving, remote Medical, etc.) business’s differentiated needs for technology.
  • 5G scenarios such as industrial control, autonomous driving, remote Medical, etc.
  • Network slicing must have four important characteristics, namely virtualization, on-demand customization, end-to-end, and isolation.
  • Virtualization Network slicing needs to build network slicing based on the general infrastructure of NFV/SDN; On-demand customization: Each network slicing needs to adapt to the different characteristics of various types of services; End-to-end: Network slicing needs to be from device to access Network, access network to core network and then to transmission network to achieve network slicing; isolation: For each network slice, exclusive resources such as virtual servers, network bandwidth, and service quality are fully guaranteed. The slices are isolated from each other, and the error or failure of one slice will not affect the communication of other slices.
  • FIG. 2 is one of the schematic flowcharts of the handover method based on the side link relay provided by the embodiment of the present application.
  • the execution body of the method is a first communication device, and the first communication device may be a terminal, such as a remote UE, as shown in FIG. 2, the method includes the following steps:
  • Step 200 Measure neighbor nodes when the signal strength/quality of the link between the first communication device and the second communication device is lower than a preset threshold
  • the second communication device may be a side link relay SL relay or a base station.
  • the link between the first communication device and the second communication device may be a Uu link between the terminal and the base station, wherein the link interface between the terminal and the base station is a Uu interface; the first communication device communicates with the second communication device
  • the link between the devices can also be a Sidelink (SL) link between the terminal and the SL relay, and the interface of the SL link is PC5.
  • SL Sidelink
  • the first communication device measures a neighbor node to obtain a measurement result.
  • the terminal performs a service in the area covered by the second communication device, and measures the signal strength/quality of the link between the first communication device and the second communication device. If the signal strength/quality of the link between the device and the second communication device is lower than the preset threshold, the terminal starts to measure the neighbor node and reports the measurement result to the second communication device.
  • the neighbor node includes the adjacent cell and/or the adjacent side link relay SL relay of the second communication device.
  • neighbor nodes include: cells and/or SL relays.
  • the neighbor node and the second communication device have overlapping signal coverage areas.
  • the neighbor node includes the SL relay under the base station and/or other SL relays under the adjacent base station.
  • the SL relay under the base station and/or other SL relays under the adjacent base station are all adjacent SL relays for the second communication device at this time.
  • the neighbor node includes a serving cell of the terminal, a neighboring cell, other SL relays under the same base station, and/or other SL relays under a neighboring base station.
  • the serving cell and neighboring cells of the terminal are all neighboring cells relative to the second communication device at this time, and other SL relays under the same base station and other SL relays under the neighboring base station are relative to the second communication device at this time. Both are adjacent SL relays.
  • a terminal performs a service in a certain base station cell, and if the signal strength/quality of the link between the terminal and the base station cell is lower than a preset threshold, the terminal starts the SL relay under the base station and/or other services under the neighboring base station. Measurement of SL relay.
  • the terminal when the terminal performs a service under a certain SL relay, if the signal strength/quality of the SL link between the terminal and the SL relay is lower than a preset threshold, the terminal starts to communicate with the serving cell, neighboring cells and/or other SL relays. Measurement.
  • This embodiment of the present application does not specifically limit how the terminal measures neighbor nodes.
  • Step 201 Send a measurement result to the second communication device
  • the first communication device sends the measurement result to the second communication device.
  • the second communication device receives the measurement result, and determines the target node of the handover of the first communication device from the neighbor nodes according to the measurement result, and then the second communication device sends a handover request to the target node, and the handover request carries at least the
  • the service slice information of the first communication device is used for the target node to determine whether to accept the handover request.
  • the service slice information is slice information related to the terminal service.
  • the target node is one of the neighbor nodes.
  • the signal strength/quality of the link between the first communication device and the second communication device when the signal strength/quality of the link between the first communication device and the second communication device is lower than a preset threshold, measure the adjacent cell or the adjacent SL relay, and report to the The second communication device sends the measurement result, which realizes the terminal handover in the SL relay scenario, and can ensure the continuity and service quality of the terminal service.
  • the measurement result includes slice information of neighbor nodes.
  • the terminal measures and reports the slice information of the neighbor node.
  • the second communication device can determine a node that can support the terminal service, as the target node of the terminal handover, so as to ensure the terminal service. continuity and quality of service.
  • the terminal executes the service under the coverage of the second communication device, and the service slice information of the terminal is known to the second communication device.
  • the embodiment of the present application realizes the terminal handover in the SL relay scenario, and ensures the continuity and service quality of the terminal service by using the slice information.
  • the measurement result includes at least one of the following:
  • the slice information includes core network slice information and/or radio access network RAN slice information.
  • the measurement results include: neighbor cell measurement results and/or neighbor SL relay measurement results.
  • the neighbor cell measurement result includes at least one of the following:
  • the cell slice information includes core network slice information and/or radio access network (Radio Access Network, RAN) slice information.
  • Radio Access Network, RAN Radio Access Network
  • the adjacent SL relay measurement result includes at least one of the following:
  • the SL relay slice information includes core network slice information and/or RAN slice information.
  • the SL relay broadcasts the slice information it supports on the SL link, and the terminal measures and reports the slice information of the SL relay.
  • the side link relay-based handover method further includes:
  • the first communication device receives the handover command sent by the second communication device.
  • the handover command carries the random access channel RACH resource required by the first communication device to switch to the target node.
  • the RACH resources include slice-related RACH resources.
  • the first communication device releases the connection with the second communication device, and initiates a radio resource control RRC (Radio Resource Control) connection to the target node.
  • RRC Radio Resource Control
  • the first communication device receives the handover command sent by the second communication device, it indicates that the target node can accept the handover request, and the target node can support the service slice information of the terminal.
  • the adjacent cell or adjacent SL relay is measured, and the The second communication device sends the measurement result, which realizes the handover in the scenario of supporting the SL relay, and by using the slice information, the service requirements of the remote UE can be effectively guaranteed during the handover process.
  • the target node is one of the following items:
  • the third SL relay under the second base station.
  • the target node may be a serving cell of the terminal, that is, a cell under the first base station, and the terminal switches from the SL relay to the first base station;
  • the target node can also be another SL relay under the same base station with the first SL relay, and the terminal switches from the first SL relay to the second SL relay;
  • the target node can also be a cell under a different base station, that is, the terminal switches from the first SL relay to the second SL relay.
  • the first SL relay is switched to a cell under the second base station;
  • the target node may also be an SL relay under a different base station, that is, the terminal switches from the first SL relay to the third SL relay under the second base station.
  • the first base station and the second base station are adjacent base stations, that is, the first base station and the second base station have overlapping signal coverage areas.
  • the target node is one of the following items:
  • the second SL relay under the second base station.
  • the target node when the second communication device is a first base station, the target node may be a first SL relay under the first base station, or a second SL relay under the second base station.
  • the first base station and the second base station are adjacent base stations.
  • FIG. 3 is a second schematic flowchart of a method for handover based on a side link relay provided by an embodiment of the present application.
  • the execution subject of the method is a second communication device, and the second communication device may be a side link relay SL relay or
  • the base station as shown in Figure 3, the method includes the following steps:
  • Step 300 Receive a measurement result sent by the first communication device, and determine a target node to which the first communication device is handed over from the neighbor nodes based on the measurement result;
  • the first communication device may be a terminal.
  • the first communication device starts to measure the neighbor node, and reports to the second communication device Send measurement results.
  • the second communication device receives the measurement result sent by the first communication device, and determines the target node of the handover of the first communication device from the neighbor nodes based on the measurement result.
  • the neighbor node includes the adjacent cell and/or the adjacent side link relay SL relay of the second communication device.
  • neighbor nodes include: cells and/or SL relays. Neighboring nodes have overlapping signal coverage areas with the second communication device.
  • the target node is one of the neighbor nodes, and is determined by the second communication device based on the measurement result.
  • the measurement result includes at least one of the following:
  • the slice information includes core network slice information and/or radio access network RAN slice information.
  • the determining, based on the measurement result, the target node to be handed over by the first communication device includes:
  • a node with the best signal strength/quality among the candidate target nodes is determined as the target node.
  • the neighbor node that supports the service slicing information of the first communication device is used as the target node.
  • multiple neighbor nodes all support the service slice information of the first communication device, select one with the best signal strength/quality from the multiple neighbor nodes that support the service slice information of the first communication device node as the target node.
  • the terminal executes the service under the coverage of the second communication device, and the service slice information of the terminal is known to the second communication device.
  • Step 301 Send a handover request to the target node, where the handover request at least carries service slice information of the first communication device;
  • the second communication device sends a handover request to the target node, where the handover request at least carries service slice information of the first communication device, and the service slice information is used for the target node to determine whether to accept the handover request, that is, the target node.
  • the node determines whether to support the service slicing information of the first communication device in combination with its own slicing information.
  • the target node After receiving the handover request, the target node determines whether to support the service slice information of the first communication device, and if so, the target node feeds back the handover request information (HO ack information) to the second communication device; if it cannot be supported, the target node The node feeds back information on rejecting the handover request to the second communication device.
  • the handover request information HO ack information
  • the accepted handover request information carries the random access channel RACH resource required by the first communication device to switch to the target node; the rejected handover request information carries the reason for rejecting the handover request, such as the slice information required by remote UE is not supported.
  • the second communication device receives the measurement result sent by the first communication device, determines the target node to which the first communication device is handed over based on the measurement result, and then sends a handover request to the target node, where the handover request contains at least The service slice information of the first communication device is obtained, and the handover in the SL relay scenario is supported.
  • the slice information By using the slice information, the continuity and service quality of the terminal service can be guaranteed.
  • the handover request carries service slice information of the first communication device and slice information related to the second communication device.
  • the slice information related to the second communication device is used as the reference information of the target node.
  • the target node can determine corresponding resources according to the slice information related to the second communication device to support terminal services.
  • the side link relay-based switching method further includes:
  • the accepted handover request information carries the random access channel RACH resource required by the first communication device to switch to the target node, and the handover command carries the RACH resource;
  • the handover request rejection information carries the reason for rejecting the handover request.
  • the handover request acceptance information is determined by the target node based on its own slice information and the service slice information of the first communication device
  • the handover rejection request information is determined by the target node based on its own slice information. and the service slice information of the first communication device is determined.
  • the target node is one of the following items:
  • the sending a handover request to the target node includes one of the following items:
  • a handover request is sent to the first base station, the handover request is forwarded by the first base station to the second base station, and forwarded by the second base station to the third SL relay.
  • the target node may be the serving cell of the terminal, that is, a cell under the first base station, and the terminal switches from the SL relay to the first base station.
  • sending a handover request to the target node specifically, sending a handover request to the first base station.
  • the target node may also be another SL relay under the same base station as the first SL relay, and the terminal switches from the first SL relay to the second SL relay;
  • the communication process between the first SL relay and the first SL relay needs to be forwarded by the base station
  • sending a handover request to the target node is specifically: sending a handover request to the first base station, and the handover request is forwarded by the first base station to the second SL relay.
  • the target node may also be a cell under a different base station, that is, the terminal switches from the first SL relay to a cell under the second base station;
  • a handover request is sent to the first base station, and the handover request is forwarded by the first base station to the second base station.
  • the target node may also be an SL relay under different base stations, that is, the terminal switches from the first SL relay to the third SL relay under the second base station;
  • the communication process between the first SL relay and the third SL relay needs to be forwarded by the first base station and the second base station;
  • a handover request is sent to the first base station, the handover request is forwarded by the first base station to the second base station, and forwarded by the second base station to the third SL relay.
  • the target node is one of the following items:
  • the sending a handover request to the target node includes:
  • a handover request is sent to the second base station, and the handover request is forwarded by the second base station to the second SL relay.
  • the target node may be a first SL relay under the first base station
  • the sending a handover request to the target node is specifically: sending a handover request to the first SL relay.
  • the target node may also be a second SL relay under the second base station.
  • the first base station and the second base station are adjacent base stations;
  • the terminal switches from the first base station to the second SL relay under the second base station, and the direct communication between the first base station and the second SL relay is forwarded by the second base station.
  • the sending of the handover request to the target node is specifically:
  • a handover request is sent to the second base station, and the handover request is forwarded by the second base station to the second SL relay.
  • FIG. 4 is the third schematic flowchart of the method for slice switching based on side link relay provided by the embodiment of the present application, which is applied to a target node, and the target node may be a side link relay SL relay or a base station, as shown in FIG. 4 ,
  • the method includes the following steps:
  • Step 400 Receive a handover request sent by a second communication device, where the handover request at least carries service slice information of the first communication device;
  • Step 401 Based on its own slice information, determine the service slice information that supports the first communication device, and send to the second communication device accept handover request information, where the accept handover request information carries the first communication device to switch to. the random access channel RACH resources required by the target node; or,
  • the handover rejection request information is sent to the second communication device, where the handover rejection request information carries the reason for rejecting the handover request.
  • the target node receives the handover request sent by the second communication device, the handover request carries at least the service slice information of the first communication device, and judges whether to support the service slice information of the first communication device based on its own slice information.
  • the target node determines that its own network resources can support the service slicing information of the first communication device, and then sends to the second communication device accept handover request information, where the accept handover request information carries the first communication device to switch to the target node
  • the random access channel RACH resources required by the node, where the random access channel RACH resources include slice-related RACH resources.
  • the target node determines that its own network resources cannot support the service slice information of the first communication device, it sends the handover rejection request information to the second communication device, where the handover rejection request information carries the reason for rejecting the handover request.
  • the present application realizes terminal handover in the scenario of supporting side link relay, and by using slice information, the continuity and service quality of terminal services can be guaranteed.
  • FIG. 5 is a schematic diagram of a Remote UE switching from an SL relay to a base station under the same base station provided by an embodiment of the present application.
  • the remote UE performs services on the SL relay.
  • the remote UE starts to measure the neighbor nodes, including the base station cell and/or other SL relays, and measures and reports the measurement results to the SL relay (on the SL link).
  • the SL relay selects the target node of the handover (HO) remote UE, such as the cell under the first base station gNB, according to the measurement result reported by the remote UE.
  • HO handover
  • the SL relay When the SL relay selects the base station cell as the handover target, the SL relay sends a handover request (HO req) to the base station, and the handover request at least carries the service slice information of the remote UE, and the service slice information is used for the base station to determine whether to Accept the handover request.
  • HO req handover request
  • the base station After receiving the handover request, the base station determines whether to support the service slice information of the remote UE. If so, the base station feeds back the handover request information (HO ack information) to the SL relay. If it cannot be supported, the base station feeds back the rejection to the SL relay.
  • Handover request information wherein, the accepted handover request information carries the random access channel RACH resource required by the remote UE to switch to the base station; the rejected handover request information carries the reason for rejecting the handover request, such as the slice information required by the remote UE is not supported.
  • the SL relay If the SL relay receives the handover request acceptance information (HO ack information), it sends a HO command to the remote UE, where the HO command carries the random access channel RACH resources required by the remote UE to switch to the base station cell.
  • HO ack information the handover request acceptance information
  • the remote UE When the remote UE receives the HO command sent by the SL relay, the remote UE releases the SL connection and initiates an RRC connection with the base station.
  • FIG. 6 is a schematic diagram of a Remote UE switching from SL relay 1 to SL relay 2 under the same base station provided by an embodiment of the present application.
  • the remote UE performs services at SL relay 1.
  • the remote UE starts to measure the neighbor nodes, including the base station cell and/or other SL relays, and measures and reports the measurement result to the SL relay 1 (on the SL link).
  • SL relay 1 selects the target node for handover (HO) remote UE, such as SL relay 2, according to the measurement result reported by the remote UE.
  • HO handover
  • SL relay 1 When SL relay 1 selects SL relay 2 as the handover target, SL relay 1 sends a handover request to SL relay 2, and the handover request carries the service slice information of the remote UE and the slice information related to SL relay 1, the service slice The information is used for the SL relay 2 to determine whether to accept the handover request.
  • SL relay 1 first sends a handover request (HO req) to the base station gNB, and when the base station receives the HO req sent by SL relay 1, according to the HO req information, including For the service slice information of the remote UE, the base station forwards the HO req to the SL relay 2.
  • HO req handover request
  • the SL relay 2 After the SL relay 2 receives the handover request, it determines whether to support the service slice information of the remote UE. If so, the SL relay 2 feeds back the handover request information (HO ack information) to the base station, and the base station forwards it to the SL relay 1 ; If it cannot be supported, the SL relay 2 feeds back the rejection handover request information to the base station, and the base station forwards it to the SL relay 1.
  • the accepted handover request information carries the random access channel RACH resource required by the remote UE to switch to SL relay 2; the handover rejection request information carries the reason for rejecting the handover request, such as the slice information required by the remote UE is not supported.
  • the SL relay 1 If the SL relay 1 receives the handover acceptance request information (HO ack information), it sends a HO command to the remote UE, and the HO command carries the random access channel RACH resources required by the remote UE to switch to the SL relay 2.
  • HO ack information the handover acceptance request information
  • the remote UE When the remote UE receives the HO command sent by the SL relay 1, the HO command carries the random access channel RACH resources required by the remote UE to switch to the SL relay 2, the UE releases the connection with the SL relay 1, and initiates the SL relay 2 RRC connection.
  • FIG. 7 is a schematic diagram of a Remote UE switching from an SL relay to a base station under different base stations according to an embodiment of the present application.
  • the remote UE performs services on the SL relay.
  • the remote UE starts to measure the neighbor nodes, including the base station cell and/or other SL relays, and measures and reports the measurement results to the SL relay (on the SL link).
  • the SL relay selects the target node of the handover (HO) remote UE, such as the cell under the second base station gNB2, according to the measurement result reported by the remote UE.
  • HO handover
  • the SL relay When the SL relay selects the cell under the second base station as the handover target, the SL relay sends a handover request to the first base station gNB1, and the first base station forwards the handover request to the second base station, and the handover request at least carries the services of the remote UE slice information, where the service slice information is used for the second base station to determine whether to accept the handover request.
  • the second base station After receiving the handover request, the second base station determines whether to support the service slice information of the remote UE. If so, the second base station feeds back the handover request acceptance information (HO ack information) to the first base station, and the first base station forwards it. to the SL relay; if it cannot be supported, the second base station feeds back the rejection handover request information to the first base station, and the first base station forwards it to the SL relay.
  • the accepted handover request information carries the random access channel RACH resource required by the remote UE to switch to the second base station; the rejected handover request information carries the reason for rejecting the handover request, such as the slice information required by the remote UE is not supported.
  • the SL relay If the SL relay receives the handover request acceptance information (HO ack information), it sends a HO command to the remote UE, where the HO command carries the random access channel RACH resource required by the remote UE to switch to the second base station.
  • HO ack information the handover request acceptance information
  • the remote UE When the remote UE receives the HO command sent by the SL relay, the HO command carries the random access channel RACH resources required by the remote UE to switch to the second base station, the UE releases the connection with the SL relay, and initiates an RRC connection to the second base station .
  • FIG. 8 is a schematic diagram of a Remote UE switching from SL relay 1 to SL relay 2 under different base stations provided by an embodiment of the present application.
  • the remote UE performs services at SL relay 1.
  • the remote UE starts to measure the neighbor nodes, including the base station cell and/or other SL relays, measures and reports the measurement result to the SL relay 1 (on the SL link).
  • SL relay 1 selects the target node of the handover (HO) remote UE according to the measurement result reported by the remote UE, such as SL relay 2 under the second base station gNB2.
  • HO handover
  • SL relay1 When SL relay1 selects SL relay 2 under the second base station as the handover target, SL relay1 sends a handover request to the first base station gNB1, the first base station forwards the handover request to the second base station, and the second base station forwards the handover request to SL relay 2.
  • the handover request carries at least the service slice information of the remote UE, and the service slice information is used for the SL relay 2 to determine whether to accept the handover request.
  • the SL relay 2 After the SL relay 2 receives the handover request, it determines whether to support the service slice information of the remote UE. If it does, the SL relay 2 feeds back the handover request information (HO ack information) to the second base station, which is forwarded by the second base station. to the first base station, and then forwarded to SL relay1 by the first base station; if it cannot be supported, SL relay 2 feeds back the rejection of the handover request information to the second base station, and the second base station forwards it to the first base station, and then forwards it by the first base station Give SL relay1.
  • the handover request information HO ack information
  • the accepted handover request information carries the random access channel RACH resource required by the remote UE to switch to SL relay 2; the handover rejection request information carries the reason for rejecting the handover request, such as the slice information required by the remote UE is not supported.
  • the SL relay 1 If the SL relay 1 receives the handover acceptance request information (HO ack information), it sends a HO command to the remote UE, and the HO command carries the random access channel RACH resources required by the remote UE to switch to the SL relay 2.
  • HO ack information the handover acceptance request information
  • the remote UE When the remote UE receives the HO command sent by the SL relay 1, the HO command carries the random access channel RACH resources required by the remote UE to switch to the SL relay 2, the UE releases the connection with the SL relay 1, and initiates the SL relay 2 RRC connection.
  • FIG. 9 is a schematic diagram of a Remote UE handover from a base station to an SL relay under the same base station provided by an embodiment of the present application.
  • the remote UE does business in the base station gNB.
  • the remote UE starts to measure the neighbor nodes, including the base station cell and/or other SL relays, and measures and reports the measurement result to the base station.
  • the base station selects the target node of the handover (HO) remote UE, such as the SL relay, according to the measurement results reported by the remote UE.
  • HO handover
  • the base station When the base station selects the SL relay as the handover target, the base station sends a handover request (HO req) to the SL relay, and the handover request at least carries the service slice information of the remote UE, and the service slice information is used for the SL relay to determine whether Accept the handover request.
  • HO req handover request
  • the SL relay After the SL relay receives the handover request, it determines whether to support the service slice information of the remote UE. If so, the SL relay feeds back the handover request information (HO ack information) to the base station. If it cannot support it, the SL relay feeds back to the base station. Reject handover request information.
  • the acceptance handover request information carries the random access channel RACH resource required by the remote UE to switch to the SL relay; the handover rejection request information carries the reason for rejecting the handover request, such as the slice information required by the remote UE is not supported.
  • the base station If the base station receives the handover request acceptance information (HO ack information), it sends a HO command to the remote UE, where the HO command carries the random access channel RACH resources required by the remote UE to switch to the SL relay.
  • HO ack information the handover request acceptance information
  • the remote UE When the remote UE receives the HO command sent by the base station, the remote UE releases the Uu connection and initiates an RRC connection with the SL relay.
  • FIG. 10 is a schematic diagram of a Remote UE switching from a base station to an SL relay under different base stations provided by an embodiment of the present application.
  • the remote UE performs services in the second base station gNB2.
  • the remote UE starts to measure the neighbor nodes, including the base station cell and/or other SL relays, and measures and reports the measurement result to the second base station.
  • the second base station selects the target node of the handover (HO) remote UE, such as the SL relay of the first base station gNB1.
  • HO handover
  • the second base station When the second base station selects the SL relay of the first base station as the handover target, the second base station sends a handover request (HO req) to the first base station, and the first base station forwards the handover request to the SL relay.
  • the handover request carries at least the service slice information of the remote UE, and the service slice information is used for the SL relay to determine whether to accept the handover request.
  • the SL relay After the SL relay receives the handover request, it determines whether to support the service slice information of the remote UE. If so, the SL relay feeds back the handover request acceptance information (HO ack information) to the first base station, and the first base station will accept the request. The handover request information is forwarded to the second base station; if it cannot be supported, the SL relay feeds back the handover rejection request information to the first base station, and the first base station forwards the handover rejection request information to the second base station.
  • the acceptance handover request information carries the random access channel RACH resource required by the remote UE to switch to the SL relay; the handover rejection request information carries the reason for rejecting the handover request, such as the slice information required by the remote UE is not supported.
  • the second base station If the second base station receives the handover request acceptance information (HO ack information), it sends a HO command to the remote UE, where the HO command carries the random access channel RACH resources required by the remote UE to switch to the SL relay.
  • HO ack information the handover request acceptance information
  • the remote UE When the remote UE receives the HO command sent by the second base station, the remote UE releases the Uu connection with the second base station and initiates an RRC connection with the SL relay of the first base station.
  • the handover method based on the side link relay realizes the handover in the scenario of supporting SL relay, and by using the slice information, the continuity and service quality of the terminal service can be guaranteed.
  • the execution subject may be a side-link relay-based switching device, or, a user in the side-link relay-based switching device may be executed.
  • a control module for executing the handover method based on the side link relay is described by taking the side link relay-based switching device performing the side link relay-based switching method as an example.
  • FIG. 11 is one of the schematic structural diagrams of the side-link relay-based switching apparatus provided by the embodiment of the application.
  • the apparatus is applied to the first communication device and includes: a measuring unit 1110 and a sending unit 1120,
  • a measuring unit 1110 configured to measure a neighbor node when the signal strength/quality of the link between the first communication device and the second communication device is lower than a preset threshold
  • a sending unit 1120 configured to send the measurement result to the second communication device
  • the second communication device is a side link relay SL relay or a base station
  • the neighbor node includes a neighboring cell and/or an adjacent side link relay SL relay of the second communication device.
  • the measurement result includes at least one of the following:
  • the slice information includes core network slice information and/or radio access network RAN slice information.
  • a handover unit configured to receive a handover command sent by the second communication device, release the connection with the second communication device, and initiate a radio resource control RRC connection to the target node;
  • the handover command carries the random access channel RACH resource required by the first communication device to handover to the target node.
  • the target node is one of the following items:
  • the third SL relay under the second base station.
  • the target node is one of the following items:
  • the second SL relay under the second base station.
  • the switching device based on the side link relay realizes the switching in the SL relay scenario, and can ensure the continuity and service quality of the terminal service by using the slice information.
  • the switching device based on the side link relay in the embodiment of the present application may be a device, and may also be a component, an integrated circuit, or a chip in a terminal.
  • the device may be a mobile terminal or a non-mobile terminal.
  • the mobile terminal may include, but is not limited to, the types of terminals 11 listed above, and the non-mobile terminal may be a server, a network attached storage (NAS), a personal computer (personal computer, PC), a television ( television, TV), teller machine, or self-service machine, etc., which are not specifically limited in the embodiments of the present application.
  • the switching device based on the side link relay in the embodiment of the present application may be a device having an operating system.
  • the operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, which are not specifically limited in the embodiments of the present application.
  • the switching apparatus based on the side link relay provided by the embodiment of the present application can implement the various processes implemented by the method embodiments in FIG. 2 and FIG. 5 to FIG. 10 , and achieve the same technical effect.
  • FIG. 12 is the second schematic structural diagram of a side link relay-based switching apparatus provided by an embodiment of the present application.
  • the apparatus is applied to a second communication device and includes: a target node determining unit 1210 and a switching request sending unit 1220, wherein,
  • a target node determining unit 1210 configured to receive a measurement result sent by a first communication device, and determine a target node to be switched by the first communication device from the neighbor nodes based on the measurement result;
  • the handover request sending unit 1220 is configured to send a handover request to the target node, where the handover request at least carries service slice information of the first communication device.
  • the measurement result includes at least one of the following:
  • the slice information includes core network slice information and/or radio access network RAN slice information
  • the neighbor node includes a neighbor cell and/or an adjacent side link relay SL relay of the second communication device.
  • the determining, based on the measurement result, the target node to be handed over by the first communication device includes:
  • a node with the best signal strength/quality among the candidate target nodes is determined as the target node.
  • a switching processing unit for:
  • the accepted handover request information carries the random access channel RACH resources required by the first communication device to switch to the target node, and the handover command carries the RACH resources;
  • the handover request rejection information carries the reason for rejecting the handover request.
  • the target node is one of the following items:
  • the sending a handover request to the target node includes one of the following items:
  • a handover request is sent to the first base station, the handover request is forwarded by the first base station to the second base station, and forwarded by the second base station to the third SL relay.
  • the target node is one of the following items:
  • the sending a handover request to the target node includes:
  • a handover request is sent to the second base station, and the handover request is forwarded by the second base station to the second SL relay.
  • the switching device based on the side link relay realizes the switching in the SL relay scenario, and can ensure the continuity and service quality of the terminal service by using the slice information.
  • the switching apparatus based on the side link relay in the embodiment of the present application may be an apparatus, or may be a component, an integrated circuit, or a chip in a terminal or a network side device.
  • the switching device based on the side link relay in the embodiment of the present application may be a device having an operating system.
  • the operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, which are not specifically limited in the embodiments of the present application.
  • the switching apparatus based on the side link relay provided in the embodiment of the present application can implement the various processes implemented by the method embodiments in FIG. 3 and FIG. 5 to FIG. 10 , and achieve the same technical effect.
  • Fig. 13 is the third schematic structural diagram of the side-link relay-based switching device provided by the embodiment of the application.
  • the device is applied to a target node and includes: a switching request receiving unit 1310 and a switching request feedback unit 1320, wherein,
  • a handover request receiving unit 1310 configured to receive a handover request sent by a second communication device, where the handover request at least carries service slice information of the first communication device;
  • the handover request feedback unit 1320 is configured to, based on its own slice information, determine the service slice information that supports the first communication device, and send the handover accepted request information to the second communication device, where the accepted handover request information carries the first communication device.
  • the handover rejection request information is sent to the second communication device, where the handover rejection request information carries the reason for rejecting the handover request.
  • the switching device based on the side link relay realizes the switching in the SL relay scenario, and can ensure the continuity and service quality of the terminal service by using the slice information.
  • the switching apparatus based on the side link relay in the embodiment of the present application may be an apparatus, or may be a component, an integrated circuit, or a chip in a terminal or a network side device.
  • the switching device based on the side link relay in the embodiment of the present application may be a device having an operating system.
  • the operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, which are not specifically limited in the embodiments of the present application.
  • the switching apparatus based on the side link relay provided by the embodiment of the present application can implement the various processes implemented by the method embodiments in FIG. 4 and FIG. 5 to FIG. 10 , and achieve the same technical effect.
  • an embodiment of the present application further provides a communication device 1400, including a processor 1401, a memory 1402, a program or instruction stored in the memory 1402 and executable on the processor 1401,
  • a communication device 1400 including a processor 1401, a memory 1402, a program or instruction stored in the memory 1402 and executable on the processor 1401,
  • the communication device 1400 is a terminal
  • the program or instruction is executed by the processor 1401
  • each process of the above-mentioned embodiments of the handover method based on side link relay can be achieved, and the same technical effect can be achieved.
  • the communication device 1400 is a network-side device or a side-link relay
  • the program or instruction is executed by the processor 1401
  • each process of the above-mentioned embodiment of the switching method based on a side-link relay can be realized, and the same technical effect can be achieved , in order to avoid repetition, it will not be repeated here.
  • FIG. 15 is a schematic diagram of a hardware structure of a terminal implementing an embodiment of the present application.
  • the terminal 1500 includes but is not limited to: a radio frequency unit 1501, a network module 1502, an audio output unit 1503, an input unit 1504, a sensor 1505, a display unit 1506, a user input unit 1507, an interface unit 1508, a memory 1509, a processor 1510 and other components .
  • the terminal 1500 may also include a power source (such as a battery) for supplying power to various components, and the power source may be logically connected to the processor 1510 through a power management system, so as to manage charging, discharging, and power consumption through the power management system management and other functions.
  • a power source such as a battery
  • the terminal structure shown in FIG. 15 does not constitute a limitation on the terminal, and the terminal may include more or less components than the one shown, or combine some components, or arrange different components, which will not be repeated here.
  • the input unit 1504 may include a graphics processor (Graphics Processing Unit, GPU) 15041 and a microphone 15042. Such as camera) to obtain still pictures or video image data for processing.
  • the display unit 1506 may include a display panel 15061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
  • the user input unit 1507 includes a touch panel 15071 and other input devices 15072 .
  • the touch panel 15071 is also called a touch screen.
  • the touch panel 15071 may include two parts, a touch detection device and a touch controller.
  • Other input devices 15072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be repeated here.
  • the radio frequency unit 1501 receives the downlink data from the network side device, and then processes it to the processor 1510; in addition, sends the uplink data to the network side device.
  • the radio frequency unit 1501 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
  • Memory 1509 may be used to store software programs or instructions as well as various data.
  • the memory 1509 may mainly include a storage program or instruction area and a storage data area, wherein the stored program or instruction area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.) and the like.
  • the memory 1509 may include a high-speed random access memory, and may also include a non-volatile memory, wherein the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM) , PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • ROM Read-Only Memory
  • PROM programmable read-only memory
  • PROM erasable programmable read-only memory
  • Erasable PROM Erasable PROM
  • EPROM electrically erasable programmable read-only memory
  • EEPROM electrically erasable programmable read-only memory
  • flash memory for example at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.
  • the processor 1510 may include one or more processing units; optionally, the processor 1510 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, application programs or instructions, etc., Modem processors mainly deal with wireless communications, such as baseband processors. It can be understood that, the above-mentioned modulation and demodulation processor may not be integrated into the processor 1510.
  • the processor 1510 is configured to measure a neighbor node when the signal strength/quality of the link between the first communication device and the second communication device is lower than a preset threshold;
  • a radio frequency unit 1501 configured to send a measurement result to the second communication device
  • the second communication device is a side link relay SL relay or a base station
  • the neighbor node includes a neighboring cell and/or an adjacent side link relay SL relay of the second communication device.
  • the terminal provided by the embodiment of the present application measures the adjacent cell or the adjacent SL relay when the signal strength/quality of the link with the second communication device is lower than the preset threshold, and sends the signal to the second communication device.
  • the measurement result is sent to realize the terminal handover in the SL relay scenario.
  • the measurement result includes at least one of the following:
  • the slice information includes core network slice information and/or radio access network RAN slice information.
  • the radio frequency unit 1501 is further configured to receive a handover command sent by the second communication device, release the connection with the second communication device, and initiate a radio resource control RRC connection to the target node;
  • the handover command carries the random access channel RACH resource required by the first communication device to switch to the target node.
  • the target node is one of the following items:
  • the third SL relay under the second base station.
  • the target node is one of the following items:
  • the second SL relay under the second base station.
  • the terminal provided by the embodiment of the present application realizes the handover in the scenario of supporting SL relay, and by using slice information, the continuity and service quality of the terminal service can be guaranteed.
  • the radio frequency unit 1501 is configured to receive the measurement result sent by the first communication device
  • a processor 1510 configured to determine a target node for handover of the first communication device based on the measurement result
  • the radio frequency unit 1501 is further configured to send a handover request to the target node, where the handover request at least carries service slice information of the first communication device.
  • the terminal receives the measurement result sent by the first communication device, determines the target node of the handover of the first communication device based on the measurement result, and then sends a handover request to the target node, where the handover request carries at least the first communication device.
  • the service slice information of a communication device realizes the handover in the SL relay scenario, and by using the slice information, the continuity and service quality of the terminal service can be guaranteed.
  • the measurement result includes at least one of the following:
  • the slice information includes core network slice information and/or radio access network RAN slice information
  • the neighbor node includes a neighbor cell and/or an adjacent side link relay SL relay of the second communication device.
  • the determining, based on the measurement result, the target node to be handed over by the first communication device includes:
  • a node with the best signal strength/quality among the candidate target nodes is determined as the target node.
  • the radio frequency unit 1501 is also used for:
  • the accepted handover request information carries the random access channel RACH resource required by the first communication device to switch to the target node, and the handover command carries the RACH resource;
  • the handover request rejection information carries the reason for rejecting the handover request.
  • the target node is one of the following items:
  • the sending a handover request to the target node includes one of the following items:
  • a handover request is sent to the first base station, the handover request is forwarded by the first base station to the second base station, and forwarded by the second base station to the third SL relay.
  • the target node is one of the following items:
  • the sending a handover request to the target node includes:
  • a handover request is sent to the second base station, and the handover request is forwarded by the second base station to the second SL relay.
  • the radio frequency unit 1501 is configured to receive a handover request sent by a second communication device, where the handover request at least carries service slice information of the first communication device;
  • the processor 1510 is configured to, based on its own slice information, determine the service slice information that supports the first communication device, and send to the second communication device accept handover request information, where the accept handover request information carries the first communication the random access channel RACH resource required by the device to switch to the target node; or,
  • the handover rejection request information is sent to the second communication device, where the handover rejection request information carries the reason for rejecting the handover request.
  • the terminal provided by the embodiment of the present application realizes the terminal handover in the SL relay scenario, and by using slice information, the continuity and service quality of the terminal service can be guaranteed.
  • the network device 1600 includes: an antenna 1601 , a radio frequency device 1602 , and a baseband device 1603 .
  • the antenna 1601 is connected to the radio frequency device 1602 .
  • the radio frequency device 1602 receives information through the antenna 1601, and sends the received information to the baseband device 1603 for processing.
  • the baseband device 1603 processes the information to be sent and sends it to the radio frequency device 1602
  • the radio frequency device 1602 processes the received information and sends it out through the antenna 1601 .
  • the foregoing side link relay-based switching apparatus may be located in the baseband apparatus 1603 , and the method performed by the network side device in the above embodiments may be implemented in the baseband apparatus 1603 , and the baseband apparatus 1603 includes a processor 1604 and a memory 1605 .
  • the baseband device 1603 may include, for example, at least one baseband board on which a plurality of chips are arranged, as shown in FIG. 16 , one of the chips is, for example, the processor 1604, which is connected to the memory 1605 to call a program in the memory 1605 to execute
  • the network devices shown in the above method embodiments operate.
  • the baseband device 1603 may further include a network interface 1606 for exchanging information with the radio frequency device 1602, and the interface is, for example, a common public radio interface (CPRI for short).
  • CPRI common public radio interface
  • the network-side device in this embodiment of the present application further includes: an instruction or program stored in the memory 1605 and executable on the processor 1604, and the processor 1604 invokes the instruction or program in the memory 1605 to execute as shown in FIG. 12 or 13.
  • the method performed by the shown modules, or, the method as shown in FIG. 3 , 4 , 9 or 10 is performed, and the same technical effect is achieved. To avoid repetition, it is not repeated here.
  • An embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, each of the foregoing side link relay-based switching method embodiments is implemented process, and can achieve the same technical effect, in order to avoid repetition, it will not be repeated here.
  • the processor is the processor in the terminal or the network side device described in the foregoing embodiment.
  • the readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.
  • An embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a terminal or a network-side device program or instruction to implement the above-mentioned based on
  • the various processes of the embodiments of the switching method of the side link relay can achieve the same technical effect, and are not repeated here to avoid repetition.
  • the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip, a system-on-chip, or a system-on-a-chip, or the like.
  • the methods of the above embodiments can be implemented by means of software plus a necessary general hardware platform, and of course hardware can also be used, but in many cases the former is better implementation.
  • the technical solution of the present application can be embodied in the form of a software product in essence or in a part that contributes to the prior art, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, CD), including several instructions to make a first communication device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in the various embodiments of this application.
  • a storage medium such as ROM/RAM, magnetic disk, CD

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Abstract

本申请公开了一种基于侧链路中继的切换方法、装置、设备及存储介质，所述方法包括：在第一通信设备与第二通信设备之间的链路的信号强度/质量低于预设门限的情况下，测量邻居节点；向第二通信设备发送测量结果；其中，所述第二通信设备为侧链路中继SL relay或基站，所述邻居节点包括第二通信设备的邻小区和/或邻侧链路中继。

Description

基于侧链路中继的切换方法、装置、设备及存储介质
相关申请的交叉引用
本申请主张在2020年11月13日在中国提交的中国专利申请号202011273480.0的优先权，其全部内容通过引用包含于此。
技术领域
本申请属于通信技术领域，具体涉及一种基于侧链路中继的切换方法、装置、设备及存储介质。
背景技术
长期演进(Long Term Evolution，LTE)系统从第12个发布版本开始支持侧链路(sidelink，或译为副链路、边链路等)，用于终端(User Equipment，UE)之间不通过网络侧设备直接进行数据传输。
第五代移动通信(the 5th generation mobile communication，5G)新空口(New Radio，NR)系统可用于LTE所不支持的6GHz以上工作频段，支持更大的工作带宽，但目前版本的NR系统只支持基站与终端间的接口，尚不支持终端之间直接通信的Sidelink接口，NR切换也不支持基于侧链路中继(Sidelink relay，SL relay)的切换流程。
因此，在支持SL relay的场景下，如何实现切换是需要解决的问题。
发明内容
本申请实施例的目的是提供一种基于侧链路中继的切换方法、装置、设备及存储介质，能够解决在支持SL relay的场景下实现切换的问题。
为了解决上述技术问题，本申请是这样实现的：
第一方面，提供了一种基于侧链路中继的切换方法，应用于第一通信设备，该方法包括：
在所述第一通信设备与第二通信设备之间的链路的信号强度/质量低于预设门限的情况下，测量邻居节点；
向所述第二通信设备发送测量结果；
其中，所述第二通信设备为侧链路中继SL relay或基站，所述邻居节点包括所述第二通信设备的邻小区和/或邻侧链路中继SL relay。
第二方面，提供了一种基于侧链路中继的切换方法，应用于第二通信设备，包括：
接收第一通信设备发送的测量结果，基于所述测量结果确定所述第一通信设备切换的目标节点；
向所述目标节点发送切换请求，所述切换请求至少携带所述第一通信设备的业务切片信息。
第三方面，提供了一种基于侧链路中继的切换方法，应用于目标节点，包括：
接收第二通信设备发送的切换请求，所述切换请求至少携带所述第一通信设备的业务切片信息；
基于自身的切片信息，确定支持所述第一通信设备的业务切片信息，向所述第二通信设备发送接受切换请求信息，所述接受切换请求信息携带所述第一通信设备切换至所述目标节点所需的随机接入信道RACH资源；或者，
基于自身的切片信息，确定不支持所述第一通信设备的业务切片信息，向所述第二通信设备发送拒绝切换请求信息，所述拒绝切换请求信息携带拒绝所述切换请求的原因。
第四方面，提供了一种基于侧链路中继的切换装置，应用于第一通信设备，该装置包括：
测量单元，用于在所述第一通信设备与第二通信设备之间的链路的信号强度/质量低于预设门限的情况下，测量邻居节点；
发送单元，用于向所述第二通信设备发送测量结果；
其中，所述第二通信设备为侧链路中继SL relay或基站，所述邻居节点包括所述第二通信设备的邻小区和/或邻侧链路中继SL relay。
第五方面，提供了一种基于侧链路中继的切换装置，应用于第二通信设备，该装置包括：
目标节点确定单元，用于接收第一通信设备发送的测量结果，基于所述测量结果确定所述第一通信设备切换的目标节点；
切换请求发送单元，用于向所述目标节点发送切换请求，所述切换请求至少携带所述第一通信设备的业务切片信息。
第六方面，提供了一种基于侧链路中继的切换装置，应用于目标节点，该装置包括：
切换请求接收单元，用于接收第二通信设备发送的切换请求，所述切换请求至少携带所述第一通信设备的业务切片信息；
切换请求反馈单元，用于基于自身的切片信息，确定支持所述第一通信设备的业务切片信息，向所述第二通信设备发送接受切换请求信息，所述接受切换请求信息携带所述第一通信设备切换至所述目标节点所需的随机接入信道RACH资源；或者，
基于自身的切片信息，确定不支持所述第一通信设备的业务切片信息，向所述第二通信设备发送拒绝切换请求信息，所述拒绝切换请求信息携带拒绝所述切换请求的原因。
第七方面，提供了一种终端，该终端包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如第一方面所述的方法的步骤，或者实现如第二方面所述的方法的步骤，或者实现如第三方面所述的方法的步骤。
第八方面，提供了一种网络侧设备，该网络侧设备包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如第二方面所述的方法的步骤，或者实现如第三方面所述的方法的步骤。
第九方面，提供了一种可读存储介质，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如第一方面所述的方法的步骤，或者实现如第二方面所述的方法的步骤，或者实现如第三方面所述的方法的步骤。
第十方面，提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行终端或网络侧设备程序或指令，实现如第二方面所述的方法，或实现如第三方面所述的方法。
本申请实施例提供的基于侧链路中继的切换方法、装置、设备及存储介质，实现了支持SL relay场景下的终端切换，可以保证终端业务的连续性和业务质量。
附图说明
图1为本申请实施例可应用的无线通信系统的框图；
图2为本申请实施例提供的基于侧链路中继的切换方法的流程示意图之一；
图3为本申请实施例提供的基于侧链路中继的切换方法的流程示意图之二；
图4为本申请实施例提供的基于侧链路中继的切换方法的流程示意图之三；
图5为本申请实施例提供的同一基站下Remote UE从SL relay切换到基站的示意图；
图6为本申请实施例提供的同一基站下Remote UE从SL relay 1切换到SL relay 2的示意图；
图7为本申请实施例提供的不同基站下Remote UE从SL relay切换到基站的示意图；
图8为本申请实施例提供的不同基站下Remote UE从SL relay 1切换到SL relay 2的示意图；
图9为本申请实施例提供的同一基站下Remote UE从基站切换到SL relay的示意图；
图10为本申请实施例提供的不同基站下Remote UE从基站切换到SL relay的示意图；
图11为本申请实施例提供的基于侧链路中继的切换装置的结构示意图之一；
图12为本申请实施例提供的基于侧链路中继的切换装置的结构示意图之二；
图13为本申请实施例提供的基于侧链路中继的切换装置的结构示意图之三；
图14为实现本申请实施例的一种通信设备的结构示意图；
图15为实现本申请实施例的一种终端的硬件结构示意图；
图16为实现本申请实施例的一种网络侧设备的硬件结构示意图。
具体实施方式
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作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。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不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，以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施，且“第一”、“第二”所区别的对象通常为一类，并不限定对象的个数，例如第一对象可以是一个，也可以是多个。此外，说明书以及权利要求中“和/或”表示所连接对象的至少其中之一，字符“/”一般表示前后关联对象是一种“或”的关系。
值得指出的是，本申请实施例所描述的技术不限于长期演进型(Long Term Evolution，LTE)/LTE的演进(LTE-Advanced，LTE-A)系统，还可用于其他无线通信系统，诸如码分多址(Code Division Multiple Access，CDMA)、时分多址(Time Division Multiple Access，TDMA)、频分多址(Frequency Division Multiple Access，FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access，OFDMA)、单载波频分多址(Single-carrier Frequency-Division Multiple Access，SC-FDMA)和其他系统。本申请实施例中的术语“系统”和“网络”常被可互换地使用，所描述的技术既可用于以上提及的系统和无线电技术，也可用于其他系统和无线电技术。然而，以下描述出于示例目的描述了新空口(New Radio，NR)系统，并且在以下大部分描述中使用NR术语，尽管这些技术也可应用于NR系统应用以外的应用，如第6代(6th Generation，6G)通信系统。
图1示出本申请实施例可应用的一种无线通信系统的框图。无线通信系统包括终端11、网络侧设备12以及侧链路中继13。其中，终端11也可以称作终端设备或者用户终端(User Equipment，UE)，终端11可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)或称为笔记本电脑、个人数字助理(Personal Digital Assistant，PDA)、掌上电脑、上网本、超级移动个人计算机(ultra-mobile personal computer，UMPC)、移动上网装置(Mobile Internet Device，MID)、可穿戴式设备(Wearable Device)或车载设备(VUE)、行人终端(PUE)等终端侧设备，可穿戴式设备包括：手环、耳机、眼镜等。需要说明的是，在本申请实施例并不限定终端11的具体类型。网络侧设备12可以是基站或核心网，其中，基站可被称为节点B、演进节点B、接入点、基收发机站(Base Transceiver Station，BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set，BSS)、扩展服务集(Extended Service Set，ESS)、B节点、演进型B节点(eNB)、5G网络架构(next generation system)中的5G基站(gNB)、家用B节点、家用演进型B节点、WLAN接入点、WiFi节点、发送接收点(Transmitting Receiving Point，TRP)或所述领域中其他某个合适的术语，只要达到相同的技术效果，所述基站不限于特定技术词汇，需要说明的是，在本申请实施例中仅以NR系统中的基站为例，但是并不限定基站的具体类型。侧链路中继(sidelink relay，SL relay)13可以是包括中继组件的UE，该中继组件被配置成从网络侧设备12向终端11中继信息和/或从终端11向网络侧设备12中继信息。可选的，侧链路中继13可以包括通信组件，该通信组件被配置成促成与终端11的侧链路通信。侧链路中继13和/或终端11可与网络侧设备12处于连通状态。
下面结合附图，通过具体的实施例及其应用场景对本申请实施例提供的基于侧链路中继的切换方 法、装置、设备及存储介质进行详细地说明。
为了便于更好地理解本申请实施例，首先对侧链路sidelink进行描述。
LTE sidelink的设计适用于特定的公共安全事务(如火灾场所或地震等灾难场所进行紧急通讯)，或车联网(vehicle to everything，V2X)通信等。车联网通信包括各种业务，例如，基本安全类通信，高级(自动)驾驶，编队，传感器扩展等等。由于LTE sidelink只支持广播通信，因此主要用于基本安全类通信，其他在时延、可靠性等方面具有严格QoS需求的高级V2X业务将通过NR sidelink支持。
Sidelink链路接口又可以称作PC5接口。目前的sidelink传输也主要分广播(broadcast)，组播(groupcast)，单播(unicast)几种传输形式。单播顾名思义就是one to one的传输。组播为one to many的传输。广播也是one to many的传输，但是广播并没有UE属于同一个组的概念。
目前sidelink单播和组播通信支持物理层HARQ反馈机制。
1)基站调度模式(Mode 1):BS schedules SL resource(s)to be used by UE for SL transmission(s).由网络侧设备(基站)控制并为每个UE分配资源。
在基站调度模式中，sl-DCI-ToSL-Trans这个参数用于定义在DCI接收时刻和该DCI调度的第一个SL传输时刻之间的时间间隔。这个参数可以由RRC配置一组可能的取值列表，然后在DCI中指示当前这个DCI使用的是哪一个值。
2)UE自主模式(Mode 2):由每个UE自主选择资源。
下面描述作为NR的一个特征的网络切片(slice)。网络切片是提供特定网络能力和网络特性的逻辑网络。所谓的网络切片技术，能够让运营商在一个硬件基础设施上利用软件手段切分出多个“虚拟”的端到端网络，切分出来的每个虚拟网络从设备到接入网，从接入网到核心网，从核心网到传输网都在逻辑上实现完全隔离，并分别适配各自业务的技术需求。也就是说，网络切片技术可以通过在同一张5G物理网络中，虚拟出多个不同特性的逻辑子网络，通过差异化的设置和优化，满足5G不同场景下(如工业控制、自动驾驶、远程医疗等)业务对技术的差异需求。
网络切片必须具备四个重要特征，即虚拟化、按需定制、端到端、隔离性。虚拟化：网络切片要基于NFV/SDN的通用基础设施构建网络切片；按需定制：每个网络切片要适配各种类型服务的不同特征需求；端到端：网络切片要从设备到接入网，接入网到核心网再到传输网实现网络切片；隔离性：每一个网络切片，像虚拟服务器、网络带宽、服务质量等专属资源都得到充分保证。切片之间做到相互隔离，一个切片的错误或故障不会影响到其它切片的通信。
图2为本申请实施例提供的基于侧链路中继的切换方法的流程示意图之一，该方法的执行主体为第一通信设备，该第一通信设备可以是终端，如remote UE，如图2所示，该方法包括以下步骤：
步骤200、在所述第一通信设备与第二通信设备之间的链路的信号强度/质量低于预设门限的情况下，测量邻居节点；
可选的，在本申请实施例中，所述第二通信设备可以为侧链路中继SL relay或基站。
第一通信设备与第二通信设备之间的链路，可以是终端与基站之间的Uu链路，其中，终端与基站之间的链路接口为Uu接口；第一通信设备与第二通信设备之间的链路，也可以是终端与SL relay之间的Sidelink(SL)链路，SL链路的接口为PC5。
在所述第一通信设备与第二通信设备之间的链路的信号强度/质量低于预设门限的情况下，所述第一通信设备对邻居节点进行测量，获得测量结果。
可选的，终端在第二通信设备所覆盖的区域内执行业务，对所述第一通信设备与第二通信设备之间的链路的信号强度/质量进行测量，若确定所述第一通信设备与第二通信设备之间的链路的信号强度/质量低于预设门限，则终端启动测量邻居节点并上报测量结果给第二通信设备。
其中，所述邻居节点包括所述第二通信设备的邻小区和/或邻侧链路中继SL relay。
可以理解的是，邻居节点的类型包括：小区和/或SL relay。邻居节点与所述第二通信设备具有交叠的信号覆盖区域。
需要说明的是，若第二通信设备为基站，则所述邻居节点包括该基站下的SL relay和/或邻基站下 的其他SL relay。其中，该基站下SL relay和/或邻基站下的其他SL relay对于此时的第二通信设备而言均是邻SL relay。
若第二通信设备为SL relay，则所述邻居节点包括终端的服务小区、邻小区、同一基站下的其他SL relay和/或邻基站下的其他SL relay。其中，终端的服务小区、邻小区相对于此时的第二通信设备而言均为邻小区，同一基站下的其他SL relay、邻基站下的其他SL relay对于此时的第二通信设备而言均为邻SL relay。
例如，终端在某一基站小区下执行业务，若终端与该基站小区之间的链路的信号强度/质量低于预设门限，则终端启动该基站下SL relay和/或邻基站下的其他SL relay的测量。
例如，终端在某一SL relay下执行业务，若终端与该SL relay之间的SL链路的信号强度/质量低于预设门限，则终端启动对服务小区、邻小区和/或其他SL relay的测量。
本申请实施例不对终端如何测量邻居节点作具体限定。
步骤201、向所述第二通信设备发送测量结果；
在本申请实施例中，第一通信设备向第二通信设备发送测量结果。第二通信设备接收到测量结果，根据测量结果从所述邻居节点中确定所述第一通信设备切换的目标节点，然后，第二通信设备向目标节点发送切换请求，所述切换请求至少携带所述第一通信设备的业务切片信息，所述业务切片信息用于供所述目标节点确定是否接受所述切换请求。其中，业务切片信息为终端业务相关的切片信息。
可以理解的是，目标节点为所述邻居节点中的一个。
在本申请实施例中，通过在所述第一通信设备与第二通信设备之间的链路的信号强度/质量低于预设门限的情况下，测量邻小区或邻SL relay，并向所述第二通信设备发送测量结果，实现了支持SL relay场景下的终端切换，可以保证终端业务的连续性和业务质量。
在一个实施例中，所述测量结果包括邻居节点的切片信息。终端测量并上报邻居节点的切片信息，第二通信设备基于邻居节点的切片信息，以及终端的业务切片信息，可以从中确定一个能够支持终端业务的节点，作为终端切换的目标节点，从而保证终端业务的连续性和业务质量。
需要说明的是，终端在第二通信设备覆盖范围下执行业务，终端的业务切片信息对于第二通信设备而言是已知的。
本申请实施例实现了支持SL relay场景下的终端切换，并且通过利用切片信息，保证了终端业务的连续性和业务质量。
可选的，所述测量结果包括以下至少一项：
邻居节点的标识ID；
邻居节点的信号强度/质量；
邻居节点的频率；
邻居节点的切片信息；
其中，所述切片信息包括核心网切片信息和/或无线接入网RAN切片信息。
可以理解的是，所述测量结果包括：邻小区测量结果和/或邻SL relay测量结果。
邻小区测量结果包括以下至少一项：
小区ID；
小区信号强度/质量；
小区频率；
小区slice信息；
其中，小区slice信息包括核心网slice信息和/或无线接入网(Radio Access Network，RAN)slice信息。
其中，邻SL relay测量结果包括以下至少一项：
Relay ID；
SL Relay信号强度/质量；
SL relay频率；
SL relay slice信息；
其中，SL relay slice信息包括核心网slice信息和/或RAN slice信息。
SL relay在SL链路上广播其所支持slice信息，终端测量并上报SL relay的slice信息。
在一些可选的实施例中，所述基于侧链路中继的切换方法还包括：
接收所述第二通信设备发送的切换命令，释放与所述第二通信设备的连接，并向所述目标节点发起无线资源控制RRC连接。
可选的，第一通信设备接收所述第二通信设备发送的切换命令。
其中，所述切换命令携带第一通信设备切换至所述目标节点所需的随机接入信道RACH资源。
所述RACH资源包括slice相关的RACH资源。
然后，第一通信设备释放与所述第二通信设备的连接，并向所述目标节点发起无线资源控制RRC(Radio Resource Control)连接。
需要说明的是，在第一通信设备接收到第二通信设备发送的切换命令时，表明目标节点可以接受切换请求，目标节点能够支持终端的业务slice信息。
在本申请实施例中，在所述第一通信设备与第二通信设备之间的链路的信号强度/质量低于预设门限的情况下，通过测量邻小区或邻SL relay，并向所述第二通信设备发送测量结果，实现了在支持SL relay场景下的切换，并且通过利用切片信息，切换过程中可有效保证remote UE的业务需求。
可选的，在所述第二通信设备为第一SL relay的情况下，所述目标节点为以下各项中的一项：
第一基站下的小区；
第一基站下的第二SL relay；
第二基站下的小区；
第二基站下的第三SL relay。
可选的，在所述第二通信设备为第一SL relay的情况下，所述目标节点可以是终端的服务小区，即第一基站下的小区，终端从SL relay切换到第一基站；所述目标节点还可以是与该第一SL relay处于同一基站下的其他SL relay，终端从第一SL relay切换到第二SL relay；所述目标节点还可以是不同基站下的小区，即终端从第一SL relay切换到第二基站下的小区；所述目标节点也可以是不同基站下的SL relay，即终端从第一SL relay切换到第二基站下的第三SL relay。
此处，第一基站与第二基站为相邻基站，即第一基站与第二基站具有交叠的信号覆盖区域。
可选的，在所述第二通信设备为第一基站的情况下，所述目标节点为以下各项中的一项：
所述第一基站下的第一SL relay；
第二基站下的第二SL relay。
可选的，在所述第二通信设备为第一基站的情况下，所述目标节点可以是所述第一基站下的第一SL relay，也可以是第二基站下的第二SL relay。第一基站与第二基站为相邻基站。
图3为本申请实施例提供的基于侧链路中继的切换方法的流程示意图之二，该方法的执行主体为第二通信设备，该第二通信设备可以是侧链路中继SL relay或基站，如图3所示，该方法包括以下步骤：
步骤300、接收第一通信设备发送的测量结果，基于所述测量结果从所述邻居节点中确定第一通信设备切换的目标节点；
可选的，第一通信设备可以是终端。
在所述第一通信设备与第二通信设备之间的链路的信号强度/质量低于预设门限的情况下，所述第一通信设备启动对邻居节点进行测量，并向第二通信设备发送测量结果。
第二通信设备接收第一通信设备发送的测量结果，基于所述测量结果从所述邻居节点中确定第一通信设备切换的目标节点。
其中，所述邻居节点包括所述第二通信设备的邻小区和/或邻侧链路中继SL relay。
可以理解的是，邻居节点的类型包括：小区和/或SL relay。邻居节点与所述第二通信设备具有交叠 的信号覆盖区域。
目标节点为所述邻居节点中的一个，是第二通信设备基于所述测量结果确定的。
可选的，所述测量结果包括以下至少一项：
邻居节点的标识ID；
邻居节点的信号强度/质量；
邻居节点的频率；
邻居节点的切片信息；
其中，所述切片信息包括核心网切片信息和/或无线接入网RAN切片信息。
在一个可选的实施例中，所述基于所述测量结果确定所述第一通信设备切换的目标节点，包括：
基于所述邻居节点的切片信息，确定所述邻居节点中支持所述第一通信设备的业务切片信息的节点为目标节点；或者，
基于所述邻居节点的切片信息，确定所述邻居节点中支持所述第一通信设备的业务切片信息的节点为候选目标节点；
确定所述候选目标节点中信号强度/质量最优的节点为所述目标节点。
可以理解的是，在多个邻居节点中如果只有一个邻居节点支持所述第一通信设备的业务切片信息，则将支持第一通信设备的业务切片信息的邻居节点作为目标节点。
在有多个邻居节点都支持所述第一通信设备的业务切片信息的情况下，从所述多个支持所述第一通信设备的业务切片信息的邻居节点中选择一个信号强度/质量最优的节点作为目标节点。
需要说明的是，终端在第二通信设备覆盖范围下执行业务，终端的业务切片信息对于第二通信设备而言是已知的。
步骤301、向所述目标节点发送切换请求，所述切换请求至少携带所述第一通信设备的业务切片信息；
第二通信设备向目标节点发送切换请求，所述切换请求至少携带所述第一通信设备的业务切片信息，所述业务切片信息用于供所述目标节点确定是否接受所述切换请求，即目标节点结合自身的切片信息，判断是否支持第一通信设备的业务切片信息。
目标节点接收到切换请求后，判断是否支持所述第一通信设备的业务切片信息，若支持，则目标节点向第二通信设备反馈接受切换请求信息(HO ack信息)；若不能支持，则目标节点向第二通信设备反馈拒绝切换请求信息。
其中，接受切换请求信息携带所述第一通信设备切换至目标节点所需的随机接入信道RACH资源；拒绝切换请求信息携带拒绝该切换请求的原因，如不支持remote UE所需要的切片信息。
在本申请实施例中，第二通信设备接收第一通信设备发送的测量结果，并基于所述测量结果确定第一通信设备切换的目标节点，然后向目标节点发送切换请求，切换请求中至少携带了第一通信设备的业务切片信息，实现了支持SL relay场景下的切换，通过利用切片信息，可以保证终端业务的连续性和业务质量。
在一个可选的实施例中，所述切换请求中携带所述第一通信设备的业务切片信息以及所述第二通信设备相关的切片信息。
其中，所述第二通信设备相关的切片信息用于作为所述目标节点的参考信息，当目标节点自身的切片信息不支持第一通信设备的业务切片信息时，为了保证终端业务的连续性和质量，目标节点可以根据所述第二通信设备相关的切片信息去确定相应的资源，以支持终端业务。
可选的，所述基于侧链路中继的切换方法，还包括：
接收所述目标节点发送的接受切换请求信息，向所述第一通信设备发送切换命令；
其中，所述接受切换请求信息携带所述第一通信设备切换至所述目标节点所需的随机接入信道RACH资源，所述切换命令携带所述RACH资源；
或者，
接收所述目标节点发送的拒绝切换请求信息，不向所述第一通信设备发送切换命令；
其中，所述拒绝切换请求信息携带拒绝所述切换请求的原因。
可以理解的是，所述接受切换请求信息为所述目标节点基于自身的切片信息和所述第一通信设备的业务切片信息确定，所述拒绝切换请求信息为所述目标节点基于自身的切片信息和所述第一通信设备的业务切片信息确定。
可选的，在所述第二通信设备为第一SL relay的情况下，所述目标节点为以下各项中的一项：
第一基站下的小区；
第一基站下的第二SL relay；
第二基站下的小区；
第二基站下的第三SL relay；
所述向所述目标节点发送切换请求，包括以下各项中的一项：
向所述第一基站发送切换请求；
向所述第一基站发送切换请求，所述切换请求被所述第一基站转发至所述第二SL relay；
向所述第一基站发送切换请求，所述切换请求被所述第一基站转发至所述第二基站；
向所述第一基站发送切换请求，所述切换请求被所述第一基站转发至所述第二基站，并由所述第二基站转发至所述第三SL relay。
可选的，在所述第二通信设备为第一SL relay的情况下，所述目标节点可以是终端的服务小区，即第一基站下的小区，终端从SL relay切换到第一基站，相对应地，向所述目标节点发送切换请求，具体为向第一基站发送切换请求。
在一个实施例中，所述目标节点还可以是与该第一SL relay处于同一基站下的其他SL relay，终端从第一SL relay切换到第二SL relay；
需要说明的是，第一SL relay与第一SL relay之间的通信过程均需要通过基站进行转发；
相对应地，向所述目标节点发送切换请求，具体为：向所述第一基站发送切换请求，所述切换请求被所述第一基站转发至所述第二SL relay。
在一个实施例中，所述目标节点还可以是不同基站下的小区，即终端从第一SL relay切换到第二基站下的小区；
需要说明的是，第一SL relay与第二基站之间的通信过程均需要通过第一基站进行转发；
相对应地，向所述目标节点发送切换请求，具体为：
向所述第一基站发送切换请求，所述切换请求被所述第一基站转发至所述第二基站。
在一个实施例中，所述目标节点也可以是不同基站下的SL relay，即终端从第一SL relay切换到第二基站下的第三SL relay；
需要说明的是，第一SL relay与第三SL relay之间的通信过程均需要通过第一基站和第二基站进行转发；
相对应地，向所述目标节点发送切换请求，具体为：
向所述第一基站发送切换请求，所述切换请求被所述第一基站转发至所述第二基站，并由所述第二基站转发至所述第三SL relay。
可选的，在所述第二通信设备为第一基站的情况下，所述目标节点为以下各项中的一项：
所述第一基站下的第一SL relay；
第二基站下的第二SL relay；
所述向所述目标节点发送切换请求，包括：
向所述第一SL relay发送切换请求；或者，
向所述第二基站发送切换请求，所述切换请求被所述第二基站转发至所述第二SL relay。
可选的，在所述第二通信设备为第一基站的情况下，所述目标节点可以是所述第一基站下的第一SL relay；
相应地，所述向所述目标节点发送切换请求，具体为：向所述第一SL relay发送切换请求。
在一个实施例中，所述目标节点也可以是第二基站下的第二SL relay。第一基站与第二基站为相邻基站；
终端从第一基站切换到第二基站下的第二SL relay，第一基站与该第二SL relay直接的通信通过第二基站转发。
相对应地，所述向所述目标节点发送切换请求，具体为：
向所述第二基站发送切换请求，所述切换请求被所述第二基站转发至所述第二SL relay。
图4为本申请实施例提供的基于侧链路中继的切片切换方法的流程示意图之三，应用于目标节点，目标节点可以为侧链路中继SL relay或基站，如图4所示，该方法包括以下步骤：
步骤400、接收第二通信设备发送的切换请求，所述切换请求至少携带所述第一通信设备的业务切片信息；
步骤401、基于自身的切片信息，确定支持所述第一通信设备的业务切片信息，向所述第二通信设备发送接受切换请求信息，所述接受切换请求信息携带所述第一通信设备切换至所述目标节点所需的随机接入信道RACH资源；或者，
基于自身的切片信息，确定不支持所述第一通信设备的业务切片信息，向所述第二通信设备发送拒绝切换请求信息，所述拒绝切换请求信息携带拒绝所述切换请求的原因。
目标节点接收第二通信设备发送的切换请求，所述切换请求至少携带所述第一通信设备的业务切片信息，基于自身的切片信息，判断是否支持所述第一通信设备的业务切片信息，若目标节点确定自身的网络资源能够支持所述第一通信设备的业务切片信息，则向第二通信设备发送接受切换请求信息，所述接受切换请求信息携带所述第一通信设备切换至所述目标节点所需的随机接入信道RACH资源，所述随机接入信道RACH资源包括切片相关的RACH资源。
若目标节点确定自身的网络资源不能够支持所述第一通信设备的业务切片信息，则向第二通信设备发送拒绝切换请求信息，所述拒绝切换请求信息携带拒绝所述切换请求的原因。
本申请实现了支持侧链路中继场景下的终端切换，并且通过利用切片信息，可以保证终端业务的连续性和业务质量。
下面通过图5-图10进一步详细阐述本申请实施例提供的基于侧链路中继的切换方法。
图5为本申请实施例提供的同一基站下Remote UE从SL relay切换到基站的示意图。如图5所示，remote UE在SL relay做业务。当SL链路信号低于一定的门限，remote UE启动测量邻居节点，包括基站小区和/或其它SL relay，测量并上报测量结果给SL relay(在SL链路上)。SL relay根据remote UE上报的测量结果，选择切换(HO)remote UE的目标节点，如第一基站gNB下的小区。
当SL relay选择基站小区为切换目标时，SL relay向基站发送切换请求(HO req)，所述切换请求至少携带所述remote UE的业务切片信息，所述业务切片信息用于供该基站确定是否接受所述切换请求。
基站接收到该切换请求后，判断是否支持所述remote UE的业务切片信息，若支持，则基站向SL relay反馈接受切换请求信息(HO ack信息)，若不能支持，则基站向SL relay反馈拒绝切换请求信息。其中，接受切换请求信息携带所述remote UE切换至基站所需的随机接入信道RACH资源；拒绝切换请求信息携带拒绝该切换请求的原因，如不支持remote UE所需要的切片信息。
若SL relay接收到接受切换请求信息(HO ack信息)，则向remote UE发送HO命令，所述HO命令携带remote UE切换至基站小区所需的随机接入信道RACH资源。
当remote UE收到SL relay发送的HO命令，remote UE释放SL连接并与基站发起RRC连接。
图6为本申请实施例提供的同一基站下Remote UE从SL relay 1切换到SL relay 2的示意图。如图6所示，remote UE在SL relay 1做业务。当SL relay 1链路信号低于一定的门限，remote UE启动测量邻居节点，包括基站小区和/或其它SL relay，测量并上报测量结果给SL relay 1(在SL链路上)。SL relay 1根据remote UE上报的测量结果，选择切换(HO)remote UE的目标节点，如SL relay 2。
当SL relay 1选择SL relay 2为切换目标时，SL relay 1向SL relay 2发送切换请求，所述切换请求携带所述remote UE的业务切片信息以及SL relay 1相关的切片信息，所述业务切片信息用于供该SL relay 2确定是否接受所述切换请求。
需要说明的是，SL relay 1与SL relay 2之间的通信过程均需要通过基站进行转发。
即SL relay 1向SL relay 2发送切换请求的具体实现为：SL relay 1首先向基站gNB发送切换请求(HO req)，当基站收到SL relay 1发送的HO req，根据HO req的信息，包括remote UE的业务切片信息，基站把HO req转发给SL relay 2。
SL relay 2接收到该切换请求后，判断是否支持所述remote UE的业务切片信息，若支持，则SL relay 2向基站反馈接受切换请求信息(HO ack信息)，并由基站转发给SL relay 1；若不能支持，则SL relay 2向基站反馈拒绝切换请求信息，并由基站转发给SL relay 1。其中，接受切换请求信息携带所述remote UE切换至SL relay 2所需的随机接入信道RACH资源；拒绝切换请求信息携带拒绝该切换请求的原因，如不支持remote UE所需要的切片信息。
若SL relay 1接收到接受切换请求信息(HO ack信息)，则向remote UE发送HO命令，所述HO命令携带remote UE切换至SL relay 2所需的随机接入信道RACH资源。
当remote UE收到SL relay 1发送的HO命令，所述HO命令携带remote UE切换至SL relay 2所需的随机接入信道RACH资源，UE释放与SL relay 1的连接，并向SL relay 2发起RRC连接。
图7为本申请实施例提供的不同基站下Remote UE从SL relay切换到基站的示意图。如图7所示，remote UE在SL relay做业务。当SL链路信号低于一定的门限，remote UE启动测量邻居节点，包括基站小区和/或其它SL relay，测量并上报测量结果给SL relay(在SL链路上)。SL relay根据remote UE上报的测量结果，选择切换(HO)remote UE的目标节点，如第二基站gNB2下的小区。
当SL relay选择第二基站下的小区为切换目标时，SL relay向第一基站gNB1发送切换请求，第一基站将该切换请求转发给第二基站，该切换请求至少携带所述remote UE的业务切片信息，所述业务切片信息用于供该第二基站确定是否接受所述切换请求。
第二基站接收到该切换请求后，判断是否支持所述remote UE的业务切片信息，若支持，则第二基站向第一基站反馈接受切换请求信息(HO ack信息)，并由第一基站转发给SL relay；若不能支持，则第二基站向第一基站反馈拒绝切换请求信息，并由第一基站转发给SL relay。其中，接受切换请求信息携带所述remote UE切换至第二基站所需的随机接入信道RACH资源；拒绝切换请求信息携带拒绝该切换请求的原因，如不支持remote UE所需要的切片信息。
若SL relay接收到接受切换请求信息(HO ack信息)，则向remote UE发送HO命令，所述HO命令携带remote UE切换至第二基站所需的随机接入信道RACH资源。
当remote UE收到SL relay发送的HO命令，所述HO命令携带remote UE切换至第二基站所需的随机接入信道RACH资源，UE释放与SL relay的连接，并向第二基站发起RRC连接。
图8为本申请实施例提供的不同基站下Remote UE从SL relay 1切换到SL relay 2的示意图。如图8所示，remote UE在SL relay 1做业务。当SL relay 1链路信号低于一定的门限，remote UE启动测量邻居节点，包括基站小区和/或其它SL relay，测量并上报测量结果给SL relay 1(在SL链路上)。SL relay 1根据remote UE上报的测量结果，选择切换(HO)remote UE的目标节点，如第二基站gNB2下的SL relay 2。
当SL relay1选择第二基站下的SL relay 2为切换目标时，SL relay1向第一基站gNB1发送切换请求，第一基站将该切换请求转发给第二基站，第二基站将该切换请求转发给SL relay 2。该切换请求至少携带所述remote UE的业务切片信息，所述业务切片信息用于供该SL relay 2确定是否接受所述切换请求。
SL relay 2接收到该切换请求后，判断是否支持所述remote UE的业务切片信息，若支持，则SL relay 2向第二基站反馈接受切换请求信息(HO ack信息)，并由第二基站转发给第一基站，再由第一基站转发给SL relay1；若不能支持，则SL relay 2向第二基站反馈拒绝切换请求信息，并由第二基站转发给 第一基站，再由第一基站转发给SL relay1。其中，接受切换请求信息携带所述remote UE切换至SL relay 2所需的随机接入信道RACH资源；拒绝切换请求信息携带拒绝该切换请求的原因，如不支持remote UE所需要的切片信息。
若SL relay 1接收到接受切换请求信息(HO ack信息)，则向remote UE发送HO命令，所述HO命令携带remote UE切换至SL relay 2所需的随机接入信道RACH资源。
当remote UE收到SL relay 1发送的HO命令，所述HO命令携带remote UE切换至SL relay 2所需的随机接入信道RACH资源，UE释放与SL relay 1的连接，并向SL relay 2发起RRC连接。
图9为本申请实施例提供的同一基站下Remote UE从基站切换到SL relay的示意图。如图9所示，remote UE在基站gNB做业务。当Uu链路信号低于一定的门限，remote UE启动测量邻居节点，包括基站小区和/或其它SL relay，测量并上报测量结果给基站。基站根据remote UE上报的测量结果，选择切换(HO)remote UE的目标节点，如SL relay。
当基站选择SL relay为切换目标时，基站向SL relay发送切换请求(HO req)，所述切换请求至少携带所述remote UE的业务切片信息，所述业务切片信息用于供该SL relay确定是否接受所述切换请求。
SL relay接收到该切换请求后，判断是否支持所述remote UE的业务切片信息，若支持，则SL relay向基站反馈接受切换请求信息(HO ack信息)，若不能支持，则SL relay向基站反馈拒绝切换请求信息。其中，接受切换请求信息携带所述remote UE切换至SL relay所需的随机接入信道RACH资源；拒绝切换请求信息携带拒绝该切换请求的原因，如不支持remote UE所需要的切片信息。
若基站接收到接受切换请求信息(HO ack信息)，则向remote UE发送HO命令，所述HO命令携带remote UE切换至SL relay所需的随机接入信道RACH资源。
当remote UE收到基站发送的HO命令，remote UE释放Uu连接并与SL relay发起RRC连接。
图10为本申请实施例提供的不同基站下Remote UE从基站切换到SL relay的示意图。如图10所述，remote UE在第二基站gNB2做业务。当UE与第二基站链路信号低于一定的门限，remote UE启动测量邻居节点，包括基站小区和/或其它SL relay，测量并上报测量结果给第二基站。第二基站根据remote UE上报的测量结果，选择切换(HO)remote UE的目标节点，如第一基站gNB1的SL relay。
当第二基站选择第一基站的SL relay为切换目标时，第二基站向第一基站发送切换请求(HO req)，所述第一基站将所述切换请求转发至SL relay。所述切换请求至少携带所述remote UE的业务切片信息，所述业务切片信息用于供该SL relay确定是否接受所述切换请求。
SL relay接收到该切换请求后，判断是否支持所述remote UE的业务切片信息，若支持，则SL relay向第一基站反馈接受切换请求信息(HO ack信息)，并由第一基站将该接受切换请求信息转发给第二基站；若不能支持，则SL relay向第一基站反馈拒绝切换请求信息，并由第一基站将该拒绝切换请求信息转发给第二基站。其中，接受切换请求信息携带所述remote UE切换至SL relay所需的随机接入信道RACH资源；拒绝切换请求信息携带拒绝该切换请求的原因，如不支持remote UE所需要的切片信息。
若第二基站接收到接受切换请求信息(HO ack信息)，则向remote UE发送HO命令，所述HO命令携带remote UE切换至SL relay所需的随机接入信道RACH资源。
当remote UE收到第二基站发送的HO命令，remote UE释放与第二基站的Uu连接并与第一基站的SL relay发起RRC连接。
本申请实施例提供的基于侧链路中继的切换方法，实现了在支持SL relay场景下的切换，并且通过利用切片信息，可以保证终端业务的连续性和业务质量。
需要说明的是，本申请实施例提供的基于侧链路中继的切换方法，执行主体可以为基于侧链路中继的切换装置，或者，该基于侧链路中继的切换装置中的用于执行基于侧链路中继的切换方法的控制模块。本申请实施例中以基于侧链路中继的切换装置执行基于侧链路中继的切换方法为例，说明本申请实施例提供的基于侧链路中继的切换装置。
图11为本申请实施例提供的基于侧链路中继的切换装置的结构示意图之一，该装置应用于第一通信设备，包括：测量单元1110和发送单元1120，
测量单元1110，用于在所述第一通信设备与第二通信设备之间的链路的信号强度/质量低于预设门限的情况下，测量邻居节点；
发送单元1120，用于向所述第二通信设备发送测量结果；
其中，所述第二通信设备为侧链路中继SL relay或基站，所述邻居节点包括所述第二通信设备的邻小区和/或邻侧链路中继SL relay。
可选的，所述测量结果包括以下至少一项：
邻居节点的标识ID；
邻居节点的信号强度/质量；
邻居节点的频率；
邻居节点的切片信息；
其中，所述切片信息包括核心网切片信息和/或无线接入网RAN切片信息。
可选的，还包括：
切换单元，用于接收所述第二通信设备发送的切换命令，释放与所述第二通信设备的连接，并向所述目标节点发起无线资源控制RRC连接；
其中，所述切换命令携带第一通信设备切换至所述目标节点所需的随机接入信道RACH资源。
可选的，在所述第二通信设备为第一SL relay的情况下，所述目标节点为以下各项中的一项：
第一基站下的小区；
第一基站下的第二SL relay；
第二基站下的小区；
第二基站下的第三SL relay。
可选的，在所述第二通信设备为第一基站的情况下，所述目标节点为以下各项中的一项：
所述第一基站下的第一SL relay；
第二基站下的第二SL relay。
本申请实施例提供的基于侧链路中继的切换装置，实现了支持SL relay场景下的切换，并且通过利用切片信息，可以保证终端业务的连续性和业务质量。
本申请实施例中的基于侧链路中继的切换装置可以是装置，也可以是终端中的部件、集成电路、或芯片。该装置可以是移动终端，也可以为非移动终端。示例性的，移动终端可以包括但不限于上述所列举的终端11的类型，非移动终端可以为服务器、网络附属存储器(Network Attached Storage，NAS)、个人计算机(personal computer，PC)、电视机(television，TV)、柜员机或者自助机等，本申请实施例不作具体限定。
本申请实施例中的基于侧链路中继的切换装置可以为具有操作系统的装置。该操作系统可以为安卓(Android)操作系统，可以为ios操作系统，还可以为其他可能的操作系统，本申请实施例不作具体限定。
本申请实施例提供的基于侧链路中继的切换装置能够实现图2、图5至图10的方法实施例实现的各个过程，并达到相同的技术效果，为避免重复，这里不再赘述。
图12为本申请实施例提供的基于侧链路中继的切换装置的结构示意图之二，该装置应用于第二通信设备，包括：目标节点确定单元1210和切换请求发送单元1220，其中，
目标节点确定单元1210，用于接收第一通信设备发送的测量结果，基于所述测量结果从所述邻居节点中确定所述第一通信设备切换的目标节点；
切换请求发送单元1220，用于向所述目标节点发送切换请求，所述切换请求至少携带所述第一通信设备的业务切片信息。
可选的，所述测量结果包括以下至少一项：
邻居节点的标识ID；
邻居节点的信号强度/质量；
邻居节点的频率；
邻居节点的切片信息；
其中，所述切片信息包括核心网切片信息和/或无线接入网RAN切片信息；
所述邻居节点包括所述第二通信设备的邻小区和/或邻侧链路中继SL relay。
可选的，所述基于所述测量结果确定第一通信设备切换的目标节点，包括：
基于所述邻居节点的切片信息，确定所述邻居节点中支持所述第一通信设备的业务切片信息的节点为目标节点；或者，
基于所述邻居节点的切片信息，确定所述邻居节点中支持所述第一通信设备的业务切片信息的节点为候选目标节点；
确定所述候选目标节点中信号强度/质量最优的节点为所述目标节点。
可选的，还包括：切换处理单元，用于：
接收所述目标节点发送的接受切换请求信息，向第一通信设备发送切换命令；
其中，所述接受切换请求信息携带第一通信设备切换至所述目标节点所需的随机接入信道RACH资源，所述切换命令携带所述RACH资源；
或者，
接收所述目标节点发送的拒绝切换请求信息，不向第一通信设备发送切换命令；
其中，所述拒绝切换请求信息携带拒绝所述切换请求的原因。
可选的，在所述第二通信设备为第一SL relay的情况下，所述目标节点为以下各项中的一项：
第一基站下的小区；
第一基站下的第二SL relay；
第二基站下的小区；
第二基站下的第三SL relay；
所述向所述目标节点发送切换请求，包括以下各项中的一项：
向所述第一基站发送切换请求；
向所述第一基站发送切换请求，所述切换请求被所述第一基站转发至所述第二SL relay；
向所述第一基站发送切换请求，所述切换请求被所述第一基站转发至所述第二基站；
向所述第一基站发送切换请求，所述切换请求被所述第一基站转发至所述第二基站，并由所述第二基站转发至所述第三SL relay。
可选的，在所述第二通信设备为第一基站的情况下，所述目标节点为以下各项中的一项：
所述第一基站下的第一SL relay；
第二基站下的第二SL relay；
所述向所述目标节点发送切换请求，包括：
向所述第一SL relay发送切换请求；或者，
向所述第二基站发送切换请求，所述切换请求被所述第二基站转发至所述第二SL relay。
本申请实施例提供的基于侧链路中继的切换装置，实现了支持SL relay场景下的切换，并且通过利用切片信息，可以保证终端业务的连续性和业务质量。
本申请实施例中的基于侧链路中继的切换装置可以是装置，也可以是终端或网络侧设备中的部件、集成电路、或芯片。
本申请实施例中的基于侧链路中继的切换装置可以为具有操作系统的装置。该操作系统可以为安卓(Android)操作系统，可以为ios操作系统，还可以为其他可能的操作系统，本申请实施例不作具体限定。
本申请实施例提供的基于侧链路中继的切换装置能够实现图3、图5至图10的方法实施例实现的各个过程，并达到相同的技术效果，为避免重复，这里不再赘述。
图13为本申请实施例提供的基于侧链路中继的切换装置的结构示意图之三，该装置应用于目标节 点，包括：切换请求接收单元1310和切换请求反馈单元1320，其中，
切换请求接收单元1310，用于接收第二通信设备发送的切换请求，所述切换请求至少携带所述第一通信设备的业务切片信息；
切换请求反馈单元1320，用于基于自身的切片信息，确定支持所述第一通信设备的业务切片信息，向所述第二通信设备发送接受切换请求信息，所述接受切换请求信息携带所述第一通信设备切换至所述目标节点所需的随机接入信道RACH资源；或者，
基于自身的切片信息，确定不支持所述第一通信设备的业务切片信息，向所述第二通信设备发送拒绝切换请求信息，所述拒绝切换请求信息携带拒绝所述切换请求的原因。
本申请实施例提供的基于侧链路中继的切换装置，实现了支持SL relay场景下的切换，并且通过利用切片信息，可以保证终端业务的连续性和业务质量。
本申请实施例中的基于侧链路中继的切换装置可以是装置，也可以是终端或网络侧设备中的部件、集成电路、或芯片。
本申请实施例中的基于侧链路中继的切换装置可以为具有操作系统的装置。该操作系统可以为安卓(Android)操作系统，可以为ios操作系统，还可以为其他可能的操作系统，本申请实施例不作具体限定。
本申请实施例提供的基于侧链路中继的切换装置能够实现图4、图5至图10的方法实施例实现的各个过程，并达到相同的技术效果，为避免重复，这里不再赘述。
可选的，如图14所示，本申请实施例还提供一种通信设备1400，包括处理器1401，存储器1402，存储在存储器1402上并可在所述处理器1401上运行的程序或指令，例如，该通信设备1400为终端时，该程序或指令被处理器1401执行时实现上述基于侧链路中继的切换方法实施例的各个过程，且能达到相同的技术效果。该通信设备1400为网络侧设备或侧链路中继时，该程序或指令被处理器1401执行时实现上述基于侧链路中继的切换方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
图15为实现本申请实施例的一种终端的硬件结构示意图。
该终端1500包括但不限于：射频单元1501、网络模块1502、音频输出单元1503、输入单元1504、传感器1505、显示单元1506、用户输入单元1507、接口单元1508、存储器1509、以及处理器1510等部件。
本领域技术人员可以理解，终端1500还可以包括给各个部件供电的电源(比如电池)，电源可以通过电源管理系统与处理器1510逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。图15中示出的终端结构并不构成对终端的限定，终端可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置，在此不再赘述。
应理解的是，本申请实施例中，输入单元1504可以包括图形处理器(Graphics Processing Unit，GPU)15041和麦克风15042，图形处理器15041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。显示单元1506可包括显示面板15061，可以采用液晶显示器、有机发光二极管等形式来配置显示面板15061。用户输入单元1507包括触控面板15071以及其他输入设备15072。触控面板15071，也称为触摸屏。触控面板15071可包括触摸检测装置和触摸控制器两个部分。其他输入设备15072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆，在此不再赘述。
本申请实施例中，射频单元1501将来自网络侧设备的下行数据接收后，给处理器1510处理；另外，将上行的数据发送给网络侧设备。通常，射频单元1501包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器、双工器等。
存储器1509可用于存储软件程序或指令以及各种数据。存储器1509可主要包括存储程序或指令区和存储数据区，其中，存储程序或指令区可存储操作系统、至少一个功能所需的应用程序或指令(比如声音播放功能、图像播放功能等)等。此外，存储器1509可以包括高速随机存取存储器，还可以包括 非易失性存储器，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。例如至少一个磁盘存储器件、闪存器件、或其他非易失性固态存储器件。
处理器1510可包括一个或多个处理单元；可选的，处理器1510可集成应用处理器和调制解调处理器，其中，应用处理器主要处理操作系统、用户界面和应用程序或指令等，调制解调处理器主要处理无线通信，如基带处理器。可以理解的是，上述调制解调处理器也可以不集成到处理器1510中。
其中，处理器1510，用于在所述第一通信设备与第二通信设备之间的链路的信号强度/质量低于预设门限的情况下，测量邻居节点；
射频单元1501，用于向所述第二通信设备发送测量结果；
其中，所述第二通信设备为侧链路中继SL relay或基站，所述邻居节点包括所述第二通信设备的邻小区和/或邻侧链路中继SL relay。
本申请实施例提供的终端，通过在与第二通信设备之间的链路的信号强度/质量低于预设门限的情况下，测量邻小区或邻SL relay，并向所述第二通信设备发送测量结果，实现了支持SL relay场景下的终端切换。
可选的，所述测量结果包括以下至少一项：
邻居节点的标识ID；
邻居节点的信号强度/质量；
邻居节点的频率；
邻居节点的切片信息；
其中，所述切片信息包括核心网切片信息和/或无线接入网RAN切片信息。
可选的，射频单元1501，还用于接收所述第二通信设备发送的切换命令，释放与所述第二通信设备的连接，并向所述目标节点发起无线资源控制RRC连接；
其中，所述切换命令携带第一通信设备切换至所述目标节点所需的随机接入信道RACH资源。
可选的，在所述第二通信设备为第一SL relay的情况下，所述目标节点为以下各项中的一项：
第一基站下的小区；
第一基站下的第二SL relay；
第二基站下的小区；
第二基站下的第三SL relay。
可选的，在所述第二通信设备为第一基站的情况下，所述目标节点为以下各项中的一项：
所述第一基站下的第一SL relay；
第二基站下的第二SL relay。
本申请实施例提供的终端，实现了在支持SL relay场景下的切换，并且通过利用切片信息，可保证终端业务的连续性和业务质量。
在一个实施例中，可选的，射频单元1501用于接收第一通信设备发送的测量结果；
处理器1510，用于基于所述测量结果确定所述第一通信设备切换的目标节点；
射频单元1501还用于向所述目标节点发送切换请求，所述切换请求至少携带所述第一通信设备的业务切片信息。
本申请实施例提供的终端，通过接收第一通信设备发送的测量结果，并基于所述测量结果确定第一通信设备切换的目标节点，然后向目标节点发送切换请求，切换请求中至少携带了第一通信设备的业务切片信息，实现了支持SL relay场景下的切换，并且通过利用切片信息，可以保证终端业务的连续性和业务质量。
可选的，所述测量结果包括以下至少一项：
邻居节点的标识ID；
邻居节点的信号强度/质量；
邻居节点的频率；
邻居节点的切片信息；
其中，所述切片信息包括核心网切片信息和/或无线接入网RAN切片信息；
所述邻居节点包括所述第二通信设备的邻小区和/或邻侧链路中继SL relay。
可选的，所述基于所述测量结果确定所述第一通信设备切换的目标节点，包括：
基于所述邻居节点的切片信息，确定所述邻居节点中支持所述第一通信设备的业务切片信息的节点为目标节点；或者，
基于所述邻居节点的切片信息，确定所述邻居节点中支持所述第一通信设备的业务切片信息的节点为候选目标节点；
确定所述候选目标节点中信号强度/质量最优的节点为所述目标节点。
可选的，所述射频单元1501还用于：
接收所述目标节点发送的接受切换请求信息，向所述第一通信设备发送切换命令；
其中，所述接受切换请求信息携带所述第一通信设备切换至所述目标节点所需的随机接入信道RACH资源，所述切换命令携带所述RACH资源；
或者，
接收所述目标节点发送的拒绝切换请求信息，不向所述第一通信设备发送切换命令；
其中，所述拒绝切换请求信息携带拒绝所述切换请求的原因。
可选的，在所述第二通信设备为第一SL relay的情况下，所述目标节点为以下各项中的一项：
第一基站下的小区；
第一基站下的第二SL relay；
第二基站下的小区；
第二基站下的第三SL relay；
所述向所述目标节点发送切换请求，包括以下各项中的一项：
向所述第一基站发送切换请求；
向所述第一基站发送切换请求，所述切换请求被所述第一基站转发至所述第二SL relay；
向所述第一基站发送切换请求，所述切换请求被所述第一基站转发至所述第二基站；
向所述第一基站发送切换请求，所述切换请求被所述第一基站转发至所述第二基站，并由所述第二基站转发至所述第三SL relay。
可选的，在所述第二通信设备为第一基站的情况下，所述目标节点为以下各项中的一项：
所述第一基站下的第一SL relay；
第二基站下的第二SL relay；
所述向所述目标节点发送切换请求，包括：
向所述第一SL relay发送切换请求；或者，
向所述第二基站发送切换请求，所述切换请求被所述第二基站转发至所述第二SL relay。
在一个实施例中，可选的，射频单元1501用于接收第二通信设备发送的切换请求，所述切换请求至少携带所述第一通信设备的业务切片信息；
处理器1510，用于基于自身的切片信息，确定支持所述第一通信设备的业务切片信息，向所述第二通信设备发送接受切换请求信息，所述接受切换请求信息携带所述第一通信设备切换至所述目标节点所需的随机接入信道RACH资源；或者，
基于自身的切片信息，确定不支持所述第一通信设备的业务切片信息，向所述第二通信设备发送拒绝切换请求信息，所述拒绝切换请求信息携带拒绝所述切换请求的原因。
本申请实施例提供的终端，实现了支持SL relay场景下的终端切换，并且通过利用切片信息，可以保证终端业务的连续性和业务质量。
本申请实施例还提供了一种网络侧设备。如图16所示，该网络设备1600包括：天线1601、射频装置1602、基带装置1603。天线1601与射频装置1602连接。在上行方向上，射频装置1602通过天线1601接收信息，将接收的信息发送给基带装置1603进行处理。在下行方向上，基带装置1603对要发送的信息进行处理，并发送给射频装置1602，射频装置1602对收到的信息进行处理后经过天线1601发送出去。
上述基于侧链路中继的切换装置可以位于基带装置1603中，以上实施例中网络侧设备执行的方法可以在基带装置1603中实现，该基带装置1603包括处理器1604和存储器1605。
基带装置1603例如可以包括至少一个基带板，该基带板上设置有多个芯片，如图16所示，其中一个芯片例如为处理器1604，与存储器1605连接，以调用存储器1605中的程序，执行以上方法实施例中所示的网络设备操作。
该基带装置1603还可以包括网络接口1606，用于与射频装置1602交互信息，该接口例如为通用公共无线接口(common public radio interface，简称CPRI)。
可选的，本申请实施例的网络侧设备还包括：存储在存储器1605上并可在处理器1604上运行的指令或程序，处理器1604调用存储器1605中的指令或程序执行如图12或13所示各模块执行的方法，或者，执行如图3、4、9或10所示的方法，并达到相同的技术效果，为避免重复，故不在此赘述。
本申请实施例还提供一种可读存储介质，所述可读存储介质上存储有程序或指令，该程序或指令被处理器执行时实现上述基于侧链路中继的切换方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
其中，所述处理器为上述实施例中所述的终端或网络侧设备中的处理器。所述可读存储介质，包括计算机可读存储介质，如计算机只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等。
本申请实施例另提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行终端或网络侧设备程序或指令，实现上述基于侧链路中继的切换方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片，系统芯片，芯片系统或片上系统芯片等。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外，需要指出的是，本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能，还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能，例如，可以按不同于所描述的次序来执行所描述的方法，并且还可以添加、省去、或组合各种步骤。另外，参照某些示例所描述的特征可在其他示例中被组合。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台第一通信设备(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本申请各个实施例所述的方法。
上面结合附图对本申请的实施例进行了描述，但是本申请并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本申请的启示下，在不脱离本申请宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本申请的保护之内。

Claims (31)

  1. 一种基于侧链路中继的切换方法，包括：
    在第一通信设备与第二通信设备之间的链路的信号强度/质量低于预设门限的情况下，所述第一通信设备测量邻居节点；
    所述第一通信设备向所述第二通信设备发送测量结果；
    其中，所述第二通信设备为侧链路中继SL relay或基站，所述邻居节点包括所述第二通信设备的邻小区和/或邻SL relay。
  2. 根据权利要求1所述的基于侧链路中继的切换方法，其中，所述测量结果包括以下至少一项：
    邻居节点的标识ID；
    邻居节点的信号强度/质量；
    邻居节点的频率；
    邻居节点的切片信息；
    其中，所述切片信息包括核心网切片信息和/或无线接入网RAN切片信息。
  3. 根据权利要求1所述的基于侧链路中继的切换方法，其中，还包括：
    所述第一通信设备接收所述第二通信设备发送的切换命令，释放与所述第二通信设备的连接，并向目标节点发起无线资源控制RRC连接；
    其中，所述切换命令携带第一通信设备切换至所述目标节点所需的随机接入信道RACH资源。
  4. 根据权利要求1-3任一项所述的基于侧链路中继的切换方法，其中，在所述第二通信设备为第一SL relay的情况下，目标节点为以下各项中的一项：
    第一基站下的小区；
    第一基站下的第二SL relay；
    第二基站下的小区；
    第二基站下的第三SL relay。
  5. 根据权利要求1-3任一项所述的基于侧链路中继的切换方法，其中，在所述第二通信设备为第一基站的情况下，目标节点为以下各项中的一项：
    所述第一基站下的第一SL relay；
    第二基站下的第二SL relay。
  6. 一种基于侧链路中继的切换方法，包括：
    第二通信设备接收第一通信设备发送的测量结果，基于所述测量结果确定所述第一通信设备切换的目标节点；
    所述第二通信设备向所述目标节点发送切换请求，所述切换请求至少携带所述第一通信设备的业务切片信息。
  7. 根据权利要求6所述的基于侧链路中继的切换方法，其中，所述测量结果包括以下至少一项：
    邻居节点的标识ID；
    邻居节点的信号强度/质量；
    邻居节点的频率；
    邻居节点的切片信息；
    其中，所述切片信息包括核心网切片信息和/或无线接入网RAN切片信息；
    所述邻居节点包括所述第二通信设备的邻小区和/或邻侧链路中继SL relay。
  8. 根据权利要求7所述的基于侧链路中继的切换方法，其中，所述基于所述测量结果确定所述第一通信设备切换的目标节点，包括：
    基于所述邻居节点的切片信息，确定所述邻居节点中支持所述第一通信设备的业务切片信息的节点为目标节点；或者，
    基于所述邻居节点的切片信息，确定所述邻居节点中支持所述第一通信设备的业务切片信息的节点为候选目标节点；
    确定所述候选目标节点中信号强度/质量最优的节点为所述目标节点。
  9. 根据权利要求6所述的基于侧链路中继的切换方法，其中，还包括：
    所述第二通信设备接收所述目标节点发送的接受切换请求信息，向所述第一通信设备发送切换命令；
    其中，所述接受切换请求信息携带所述第一通信设备切换至所述目标节点所需的随机接入信道RACH资源，所述切换命令携带所述RACH资源；
    或者，
    所述第二通信设备接收所述目标节点发送的拒绝切换请求信息，不向所述第一通信设备发送切换命令；
    其中，所述拒绝切换请求信息携带拒绝所述切换请求的原因。
  10. 根据权利要求6-9任一项所述的基于侧链路中继的切换方法，其中，在所述第二通信设备为第一SL relay的情况下，所述目标节点为以下各项中的一项：
    第一基站下的小区；
    第一基站下的第二SL relay；
    第二基站下的小区；
    第二基站下的第三SL relay；
    所述第二通信设备向所述目标节点发送切换请求，包括以下各项中的一项：
    所述第二通信设备向所述第一基站发送切换请求；
    所述第二通信设备向所述第一基站发送切换请求，所述切换请求被所述第一基站转发至所述第二SL relay；
    所述第二通信设备向所述第一基站发送切换请求，所述切换请求被所述第一基站转发至所述第二基站；
    所述第二通信设备向所述第一基站发送切换请求，所述切换请求被所述第一基站转发至所述第二基站，并由所述第二基站转发至所述第三SL relay。
  11. 根据权利要求6-9任一项所述的基于侧链路中继的切换方法，其中，在所述第二通信设备为第一基站的情况下，所述目标节点为以下各项中的一项：
    所述第一基站下的第一SL relay；
    第二基站下的第二SL relay；
    所述第二通信设备向所述目标节点发送切换请求，包括：
    所述第二通信设备向所述第一SL relay发送切换请求；或者，
    所述第二通信设备向所述第二基站发送切换请求，所述切换请求被所述第二基站转发至所述第二SL relay。
  12. 一种基于侧链路中继的切片切换方法，包括：
    目标节点接收第二通信设备发送的切换请求，所述切换请求至少携带第一通信设备的业务切片信息；
    所述目标节点基于自身的切片信息，确定支持所述第一通信设备的业务切片信息，向所述第二通信设备发送接受切换请求信息，所述接受切换请求信息携带所述第一通信设备切换至所述目标节点所需的随机接入信道RACH资源；或者，
    所述目标节点基于自身的切片信息，确定不支持所述第一通信设备的业务切片信息，向所述第二通信设备发送拒绝切换请求信息，所述拒绝切换请求信息携带拒绝所述切换请求的原因。
  13. 一种基于侧链路中继的切换装置，应用于第一通信设备，包括：
    测量单元，用于在所述第一通信设备与第二通信设备之间的链路的信号强度/质量低于预设门限的情况下，测量邻居节点；
    发送单元，用于向所述第二通信设备发送测量结果；
    其中，所述第二通信设备为侧链路中继SL relay或基站，所述邻居节点包括所述第二通信设备的邻小区和/或邻侧链路中继SL relay。
  14. 根据权利要求13所述的基于侧链路中继的切换装置，其中，所述测量结果包括以下至少一项：
    邻居节点的标识ID；
    邻居节点的信号强度/质量；
    邻居节点的频率；
    邻居节点的切片信息；
    其中，所述切片信息包括核心网切片信息和/或无线接入网RAN切片信息。
  15. 根据权利要求13所述的基于侧链路中继的切换装置，其中，还包括：
    切换单元，用于接收所述第二通信设备发送的切换命令，释放与所述第二通信设备的连接，并向目标节点发起无线资源控制RRC连接；
    其中，所述切换命令携带第一通信设备切换至所述目标节点所需的随机接入信道RACH资源。
  16. 根据权利要求13-15任一项所述的基于侧链路中继的切换装置，其中，在所述第二通信设备为第一SL relay的情况下，目标节点为以下各项中的一项：
    第一基站下的小区；
    第一基站下的第二SL relay；
    第二基站下的小区；
    第二基站下的第三SL relay。
  17. 根据权利要求13-15任一项所述的基于侧链路中继的切换装置，其中，在所述第二通信设备为第一基站的情况下，目标节点为以下各项中的一项：
    所述第一基站下的第一SL relay；
    第二基站下的第二SL relay。
  18. 一种基于侧链路中继的切换装置，应用于第二通信设备，包括：
    目标节点确定单元，用于接收第一通信设备发送的测量结果，基于所述测量结果确定所述第一通信设备切换的目标节点；
    切换请求发送单元，用于向所述目标节点发送切换请求，所述切换请求至少携带所述第一通信设备的业务切片信息。
  19. 根据权利要求18所述的基于侧链路中继的切换装置，其中，所述测量结果包括以下至少一项：
    邻居节点的标识ID；
    邻居节点的信号强度/质量；
    邻居节点的频率；
    邻居节点的切片信息；
    其中，所述切片信息包括核心网切片信息和/或无线接入网RAN切片信息；
    所述邻居节点包括所述第二通信设备的邻小区和/或邻侧链路中继SL relay。
  20. 根据权利要求19所述的基于侧链路中继的切换装置，其中，所述基于所述测量结果确定第一通信设备切换的目标节点，包括：
    基于所述邻居节点的切片信息，确定所述邻居节点中支持所述第一通信设备的业务切片信息的节点为目标节点；或者，
    基于所述邻居节点的切片信息，确定所述邻居节点中支持所述第一通信设备的业务切片信息的节点为候选目标节点；
    确定所述候选目标节点中信号强度/质量最优的节点为所述目标节点。
  21. 根据权利要求18所述的基于侧链路中继的切换装置，其中，还包括：切换处理单元，用于：
    接收所述目标节点发送的接受切换请求信息，向第一通信设备发送切换命令；
    其中，所述接受切换请求信息携带第一通信设备切换至所述目标节点所需的随机接入信道RACH资源，所述切换命令携带所述RACH资源；
    或者，
    接收所述目标节点发送的拒绝切换请求信息，不向第一通信设备发送切换命令；
    其中，所述拒绝切换请求信息携带拒绝所述切换请求的原因。
  22. 根据权利要求18-21任一项所述的基于侧链路中继的切换装置，其中，在所述第二通信设备为第一SL relay的情况下，所述目标节点为以下各项中的一项：
    第一基站下的小区；
    第一基站下的第二SL relay；
    第二基站下的小区；
    第二基站下的第三SL relay；
    所述向所述目标节点发送切换请求，包括以下各项中的一项：
    向所述第一基站发送切换请求；
    向所述第一基站发送切换请求，所述切换请求被所述第一基站转发至所述第二SL relay；
    向所述第一基站发送切换请求，所述切换请求被所述第一基站转发至所述第二基站；
    向所述第一基站发送切换请求，所述切换请求被所述第一基站转发至所述第二基站，并由所述第二基站转发至所述第三SL relay。
  23. 根据权利要求18-21任一所述的基于侧链路中继的切换装置，其中，在所述第二通信设备为第一基站的情况下，所述目标节点为以下各项中的一项：
    所述第一基站下的第一SL relay；
    第二基站下的第二SL relay；
    所述向所述目标节点发送切换请求，包括：
    向所述第一SL relay发送切换请求；或者，
    向所述第二基站发送切换请求，所述切换请求被所述第二基站转发至所述第二SL relay。
  24. 一种基于侧链路中继的切换装置，应用于目标节点，包括：
    切换请求接收单元，用于接收第二通信设备发送的切换请求，所述切换请求至少携带第一通信设备的业务切片信息；
    切换请求反馈单元，用于基于自身的切片信息，确定支持所述第一通信设备的业务切片信息，向所述第二通信设备发送接受切换请求信息，所述接受切换请求信息携带所述第一通信设备切换至所述目标节点所需的随机接入信道RACH资源；或者，
    基于自身的切片信息，确定不支持所述第一通信设备的业务切片信息，向所述第二通信设备发送拒绝切换请求信息，所述拒绝切换请求信息携带拒绝所述切换请求的原因。
  25. 一种终端，包括处理器，存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如权利要求1-5任一项所述的基于侧链路中继的切换方法的步骤，或者实现如权利要求6-10任一项所述的基于侧链路中继的切换方法的步骤，或者实现如权利要求12所述的基于侧链路中继的切换方法的步骤。
  26. 一种网络侧设备，包括处理器，存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如权利要求6-9、11任一项所述的基于 侧链路中继的切换方法的步骤，或者实现如权利要求12所述的基于侧链路中继的切换方法的步骤。
  27. 一种可读存储介质，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如权利要求1-5任一项所述的基于侧链路中继的切换方法，或者实现如权利要求6-11任一项所述的基于侧链路中继的切换方法的步骤，或者实现如权利要求12所述的基于侧链路中继的切换方法的步骤。
  28. 一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现如权利要求1-5任一项所述的基于侧链路中继的切换方法，或者实现如权利要求6-11任一项所述的基于侧链路中继的切换方法，或者实现如权利要求12所述的基于侧链路中继的切换方法。
  29. 一种计算机程序产品，所述程序产品被至少一个处理器执行以实现如权利要求1-5任一项所述的基于侧链路中继的切换方法，或者实现如权利要求6-11任一项所述的基于侧链路中继的切换方法，或者实现如权利要求12所述的基于侧链路中继的切换方法。
  30. 一种终端，包括所述终端被配置成用于执行如权利要求1-5任一项所述的基于侧链路中继的切换方法，或者如权利要求6-10任一项所述的基于侧链路中继的切换方法，或者如权利要求12所述的基于侧链路中继的切换方法。
  31. 一种网络侧设备，包括所述网络侧设备被配置成用于执行如权利要求6-9、11任一项所述的基于侧链路中继的切换方法，或者如权利要求12所述的基于侧链路中继的切换方法。
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