WO2024011639A1 - 一种路径切换方法、装置、设备及存储介质 - Google Patents

一种路径切换方法、装置、设备及存储介质 Download PDF

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Publication number
WO2024011639A1
WO2024011639A1 PCT/CN2022/106123 CN2022106123W WO2024011639A1 WO 2024011639 A1 WO2024011639 A1 WO 2024011639A1 CN 2022106123 W CN2022106123 W CN 2022106123W WO 2024011639 A1 WO2024011639 A1 WO 2024011639A1
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Prior art keywords
relay
target
path switching
configuration
target node
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PCT/CN2022/106123
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English (en)
French (fr)
Inventor
熊艺
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北京小米移动软件有限公司
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Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to CN202280002579.8A priority Critical patent/CN117730565A/zh
Priority to PCT/CN2022/106123 priority patent/WO2024011639A1/zh
Publication of WO2024011639A1 publication Critical patent/WO2024011639A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements

Definitions

  • the present disclosure relates to the field of communication technology, and in particular to path switching methods, devices, equipment and storage media.
  • user equipment In a communication system, user equipment (User Equipment, UE) can be directly connected to the base station, or it can communicate with the base station through the relay of another UE without being directly connected to the base station.
  • UE User Equipment
  • the UE that is not connected to the base station is called a remote UE (remote UE), and the UE that provides the relay function is called a relay UE (relay UE).
  • the remote UE and the relay UE communicate through sidelink (SL).
  • the UE's direct connection with the base station is called a direct link (Direct Link)
  • the UE's connection with the base station through a relay is called an indirect link (Indirect Link).
  • connection path of the UE will be switched.
  • path switching between base stations will be introduced. For example, from the indirect link: remote UE ⁇ ->relay UE A ⁇ ->base station X to the direct link: UE ⁇ ->base station Y; or from the direct link: UE ⁇ ->base station X to Indirect link: remote UE ⁇ ->relay UE A ⁇ ->base station Y; or, switch from indirect link: remote UE ⁇ ->relay UE A ⁇ ->base station X to indirect link: remote UE ⁇ ->relay UE B ⁇ ->base station Y.
  • the base station needs to configure the relay UE.
  • the source base station in the related art all configures the relay UE, and the above path switching process all involves inter-base station handover (inter-gNB).
  • inter-gNB inter-base station handover
  • signaling interaction is required between the source node and the target node, and the relay UE needs to be configured by the target base station instead of the source base station. Therefore, the path switching method in the related art cannot be suitable for the above-mentioned path switching scenario involving inter-base station handover (inter-gNB).
  • the path switching method, device, equipment and storage medium proposed in this disclosure are to provide a path switching method suitable for the path switching scenario of inter-base station handover (inter-gNB).
  • embodiments of the present disclosure provide a path switching method, which is executed by a target node and includes:
  • a path switching method is provided.
  • the target node will receive a request message sent by the source node.
  • the request message is used to request the target node to prepare for path switching; and the target node will also send configuration information to the target relay UE.
  • the embodiment of the present disclosure involves the step of relay configuration of the relay UE by the target node in the path switching process, so that the method of the present disclosure can be applied to path switching scenarios involving inter-base station handover (inter-gNB).
  • inter-gNB inter-base station handover
  • inter-gNB inter-base station handover
  • embodiments of the present disclosure provide a path switching method, which is executed by a relay UE and includes:
  • embodiments of the present disclosure provide a path switching method, which is executed by a source node and includes:
  • an embodiment of the present disclosure provides a communication device, which is configured in a target node and includes:
  • a transceiver module configured to receive a request message sent by the source node, where the request message is used to request the target node to prepare for path switching;
  • the transceiver module is also used to send configuration information to the target relay UE.
  • embodiments of the present disclosure provide a communication device, which is configured in a relay UE and includes:
  • Transceiver module used to receive configuration information sent by the target node
  • an embodiment of the present disclosure provides a communication device, which is configured in a source node and includes:
  • the transceiver module is configured to send a request message to the target node, where the request message is used to request the target node to prepare for path switching.
  • an embodiment of the present disclosure provides a communication device.
  • the communication device includes a processor.
  • the processor calls a computer program in a memory, it executes the method described in the first aspect.
  • an embodiment of the present disclosure provides a communication device.
  • the communication device includes a processor.
  • the processor calls a computer program in a memory, it executes the method described in the second aspect.
  • an embodiment of the present disclosure provides a communication device.
  • the communication device includes a processor.
  • the processor calls a computer program in a memory, it executes the method described in the third aspect.
  • an embodiment of the present disclosure provides a communication device.
  • the communication device includes a processor and a memory, and a computer program is stored in the memory; the processor executes the computer program stored in the memory, so that the communication device executes The method described in the first aspect above.
  • an embodiment of the present disclosure provides a communication device.
  • the communication device includes a processor and a memory, and a computer program is stored in the memory; the processor executes the computer program stored in the memory, so that the communication device Perform the method described in the second aspect above.
  • an embodiment of the present disclosure provides a communication device.
  • the communication device includes a processor and a memory, and a computer program is stored in the memory; the processor executes the computer program stored in the memory, so that the communication device Perform the method described in the third aspect above.
  • an embodiment of the present disclosure provides a communication device.
  • the device includes a processor and an interface circuit.
  • the interface circuit is used to receive code instructions and transmit them to the processor.
  • the processor is used to run the code instructions to cause The device performs the method described in the first aspect above.
  • an embodiment of the present disclosure provides a communication device.
  • the device includes a processor and an interface circuit.
  • the interface circuit is used to receive code instructions and transmit them to the processor.
  • the processor is used to run the code instructions to cause The device performs the method described in the second aspect above.
  • an embodiment of the present disclosure provides a communication device.
  • the device includes a processor and an interface circuit.
  • the interface circuit is used to receive code instructions and transmit them to the processor.
  • the processor is used to run the code instructions to cause The device performs the method described in the third aspect above.
  • an embodiment of the present disclosure provides a communication system, which includes the communication device described in the fourth aspect to the communication device described in the sixth aspect, or the system includes the communication device described in the seventh aspect to The communication device according to the ninth aspect, or the system includes the communication device according to the tenth aspect to the communication device according to the twelfth aspect, or the system includes the communication device according to the thirteenth aspect through the tenth aspect.
  • the communication device described in the five aspects includes the communication device described in the fourth aspect to the communication device described in the sixth aspect, or the system includes the communication device described in the seventh aspect to The communication device according to the ninth aspect, or the system includes the communication device according to the tenth aspect to the communication device according to the twelfth aspect, or the system includes the communication device according to the thirteenth aspect through the tenth aspect.
  • embodiments of the present invention provide a computer-readable storage medium for storing instructions used by the above-mentioned network device and/or the above-mentioned terminal device.
  • the network device is caused to execute the above-mentioned The method described in the first aspect, and/or causing the terminal device to perform the method described in the second aspect, and/or causing the terminal device to perform the method described in the third aspect.
  • the present disclosure also provides a computer program product including a computer program, which, when run on a computer, causes the computer to execute the method described in any one of the above-mentioned first to third aspects.
  • the present disclosure provides a chip system.
  • the chip system includes at least one processor and an interface, and is used to support a network device to implement the functions involved in the method described in the first aspect, and/or to support a terminal device.
  • Implement the functions involved in the method described in the second aspect, and/or support the terminal device to implement the functions involved in the method described in the third aspect for example, determine or process at least one of the data and information involved in the above method.
  • the chip system further includes a memory, and the memory is used to store necessary computer programs and data of the source secondary node.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the present disclosure provides a computer program that, when run on a computer, causes the computer to perform the method described in any one of the above-mentioned first to third aspects.
  • Figure 1 is a schematic architectural diagram of a communication system provided by an embodiment of the present disclosure
  • Figures 2a-2j are flowcharts of a path switching method provided by another embodiment of the present disclosure.
  • Figure 3 is a schematic flowchart of a path switching method provided by yet another embodiment of the present disclosure.
  • Figure 4 is a schematic flowchart of a path switching method provided by yet another embodiment of the present disclosure.
  • Figure 5 is a schematic flowchart of a path switching method provided by another embodiment of the present disclosure.
  • Figure 6 is a schematic flowchart of a path switching method provided by yet another embodiment of the present disclosure.
  • Figure 7 is a schematic flowchart of a path switching method provided by yet another embodiment of the present disclosure.
  • Figure 8 is a schematic flowchart of a path switching method provided by yet another embodiment of the present disclosure.
  • Figure 9 is a schematic flowchart of a path switching method provided by yet another embodiment of the present disclosure.
  • Figures 10a-10e are flowcharts of a path switching method provided by yet another embodiment of the present disclosure.
  • Figure 11 is a schematic flowchart of a path switching method provided by yet another embodiment of the present disclosure.
  • Figure 12 is a schematic structural diagram of a communication device provided by an embodiment of the present disclosure.
  • Figures 13a-13b are schematic structural diagrams of a communication device provided by another embodiment of the present disclosure.
  • Figure 14 is a block diagram of a communication device provided by an embodiment of the present disclosure.
  • FIG. 15 is a schematic structural diagram of a chip provided by an embodiment of the present disclosure.
  • first, second, third, etc. may be used to describe various information in the embodiments of the present disclosure, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other.
  • first information may also be called second information, and similarly, the second information may also be called first information.
  • the words "if” and “if” as used herein may be interpreted as “when” or “when” or “in response to determining.”
  • a link for direct communication between end devices is
  • the UE may switch from the current direct link to the indirect link. That is: although it is currently directly connected to the base station, it can be indirectly connected to the base station through other UEs in the future.
  • a UE used to implement relay communications between other UEs and base stations.
  • path switching method provided in any embodiment can be executed alone, and any implementation method in the embodiment can also be executed alone, or combined with other embodiments, or possible implementations in other embodiments.
  • the method is executed together, and can also be executed in combination with any technical solution in related technologies.
  • FIG. 1 is a schematic architectural diagram of a communication system provided by an embodiment of the present disclosure.
  • the communication system may include but is not limited to a network device, a remote terminal device and a relay terminal device.
  • the number and form of devices shown in Figure 1 are only for examples and do not constitute a limitation on the embodiments of the present disclosure. In actual applications, It can include two or more network devices and two or more terminal devices.
  • the communication system shown in Figure 1 includes a network device 11, a network device 12, a relay terminal device 13, and a terminal device to be switched 14 as an example.
  • LTE long term evolution
  • 5th generation fifth generation
  • 5G new radio (NR) system 5th generation new radio
  • the network device 11 and the network device 12 in the embodiment of the present disclosure are entities on the network side that are used to transmit or receive signals.
  • the network device 11 may be an evolved base station (evolved NodeB, eNB), a transmission reception point (TRP), a next generation base station (next generation NodeB, gNB) in an NR system, or other base stations in future mobile communication systems.
  • the embodiments of the present disclosure do not limit the specific technologies and specific equipment forms used by network equipment.
  • the network equipment provided by the embodiments of the present disclosure may be composed of a centralized unit (CU) and a distributed unit (DU).
  • the CU may also be called a control unit (control unit).
  • the structure can separate the protocol layers of network equipment, such as base stations, and place some protocol layer functions under centralized control on the CU. The remaining part or all protocol layer functions are distributed in the DU, and the CU centrally controls the DU.
  • the relay terminal device 13 and the terminal device 14 to be switched in the embodiment of the present disclosure may be an entity on the user side for receiving or transmitting signals, such as a mobile phone.
  • Terminal equipment can also be called terminal equipment (terminal), user equipment (user equipment, UE), mobile station (mobile station, MS), mobile terminal equipment (mobile terminal, MT), etc.
  • the terminal device can be a car with communication functions, a smart car, a mobile phone, a wearable device, a tablet computer (Pad), a computer with wireless transceiver functions, a virtual reality (VR) terminal device, an augmented reality (augmented reality (AR) terminal equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self-driving, wireless terminal equipment in remote medical surgery, smart grid ( Wireless terminal equipment in smart grid, wireless terminal equipment in transportation safety, wireless terminal equipment in smart city, wireless terminal equipment in smart home, etc.
  • the embodiments of the present disclosure do not limit the specific technology and specific equipment form used by the terminal equipment.
  • Figure 2a is a schematic flowchart of a path switching method provided by an embodiment of the present disclosure. The method is executed by a target node. As shown in Figure 2a, the path switching method may include the following steps:
  • Step 201a Receive a request message sent by the source node.
  • the request message is used to request the target node to prepare for path switching for the UE to be switched.
  • both the source node and the target node mentioned above may be base stations.
  • the request message may be a handover request message (HANDOVER REQUEST).
  • the request message may include the identification of one or more target relay UEs recommended by the active node.
  • the target relay UE may be a U2N relay UE or a U2U relay UE.
  • the identity of the target relay UE may be the corresponding identity of the target relay UE in the source node, and/or the corresponding identity of the target relay UE in the target node.
  • the identity of the target relay UE may be, for example, UE XnAP ID.
  • the above-mentioned UE to be switched may be a UE directly connected to the source node, or a UE indirectly connected to the source node.
  • the above request message requesting the target node to prepare for path switching for the UE to be switched can be understood as: Requesting the target node to perform relay configuration for the target relay UE, so that when the UE to be switched is switched to the target node, it can communicate with the target node through the relay UE Make the connection.
  • Step 202a Send configuration information to the target relay UE.
  • the configuration information is specifically used to perform relay configuration on the target relay UE, and the configuration information may include one or more of the following:
  • the local identification ID of the UE to be switched
  • Layer 2 (Layer 2, L2) ID of the UE to be switched
  • the above-mentioned relay operation-related configuration and relay transmission configuration parameters may be one or more of the following:
  • IE SL-L2RelayUEConfig is used to configure the L2U2N relay operation-related configuration used by the L2U2N relay UE, such as SRAP-Config.
  • the relay operation-related configuration and relay transmission configuration parameters may mainly include a list of remote UEs that need to be added (ie, UEs to be switched); and/or a list of remote UEs that need to be deleted, etc.
  • the remote UE list may include any or any of the configuration information of the remote UE, the identifier of the remote UE, the SRAP (Sidelink Relay Adaptation Protocol, Sidelink Relay Application Protocol) configuration of the remote UE, etc.
  • SRAP Segment Link Relay Adaptation Protocol, Sidelink Relay Application Protocol
  • the method for the target node to send the configuration information to the target relay UE may include one or more of the following:
  • the identification includes the identification of at least one target relay UE
  • one or more target relay UEs are autonomously determined, and the configuration information is sent to the autonomously determined target relay UEs.
  • the one or more target relay UEs determined independently by the target node based on implementation may be the target relay UE corresponding to the identity of the target relay UE included in the request message, or may not be the target relay UE included in the request message.
  • the method for the target node to send the configuration information to the target relay UE may include:
  • configuration information may be directly sent to the target relay UE; and/or in response to the target relay UE being in the non-connected state (such as idle state or inactive state), you need to first establish an RRC (Radio Resource Control) connection with the target relay UE (for example, the target node can send an RRC establishment message and/RRC recovery message to the target relay UE to establish an RRC connection with the target relay UE), and then send the configuration information to the target relay UE.
  • RRC Radio Resource Control
  • the target node may determine the connection status of the target relay UE through signaling. Specifically, if the target node sends an RRC connection release message to the target relay UE before the current time, and after sending the RRC connection release message, it does not receive the RRC recovery completion message and/or the RRC establishment completion message sent by the target relay UE. message, it is determined that the target relay UE is in a non-connected state. If the target node receives the RRC recovery completion message and/or RRC establishment completion message sent by the target relay UE before the current time, and after receiving the RRC recovery completion message and/or RRC establishment completion message, the target node does not relay to the target relay. When the UE sends an RRC connection release message, it is determined that the target relay UE is in the connected state.
  • the target node may carry the above configuration information in the RRC reconfiguration information and send it to the target relay UE.
  • the target node will receive the request message sent by the source node, and the request message is used to request the target node to prepare for path switching; and, the target node will also send a message to the target node.
  • the relay UE sends configuration information. It can be seen from this that the embodiment of the present disclosure involves the step of relay configuration of the relay UE by the target node in the path switching process, so that the method of the present disclosure can be applied to path switching scenarios involving inter-base station handover (inter-gNB).
  • inter-gNB inter-base station handover
  • inter-gNB inter-base station handover
  • Figure 2b is a schematic flowchart of a path switching method provided by an embodiment of the present disclosure. The method is executed by a target node. As shown in Figure 2b, the path switching method may include the following steps:
  • Step 201b Receive a request message sent by the source node.
  • the request message is used to request the target node to prepare for path switching for the UE to be switched.
  • Step 202b Send configuration information to the target relay UE.
  • steps 201b-202b please refer to the above embodiment description.
  • Step 203b Receive the first indication information sent by the target relay UE.
  • the first indication information is used to indicate whether the target relay UE successfully completes the relay configuration based on the configuration information.
  • the first indication information indicating that the target relay UE successfully completes the relay configuration based on the configuration information may be an RRC reconfiguration complete message, indicating that the target relay UE failed to complete the relay configuration based on the configuration information.
  • the first indication information to complete the relay configuration may be an RRC reestablishment request message.
  • Step 204b Send a reply message to the source node.
  • the reply message may include a confirmation message indicating that the source node's request is successful and/or a failure message indicating that the source node's request has failed.
  • the confirmation message may be a handover request confirmation (HANDOVER REQUEST ACKNOWLEDGE) message
  • the failure message may be a handover preparation failure (HANDOVER PREPARATION FAILURE) message.
  • the method for the target node to send a reply message to the source node may include any one or more of the following:
  • Method 1 In response to the target node receiving the request message sent by the source node, the target node does not send configuration information to the relay UE but independently determines whether to receive the path switch requested by the request message, and sends a reply to the source node based on the independent determination result. information.
  • the target node in response to the target node receiving the request message sent by the source node, it autonomously determines to connect the UE to be switched through a direct link (that is, the UE to be switched is directly connected to the target node instead of connecting through a relay UE), and sends the request message to the source node.
  • the node sends the confirmation message;
  • a failure message is sent to the source node.
  • Method 2 In response to the target node receiving the request message sent by the source node, the target node sends configuration information to the relay UE to perform relay configuration on the target relay UE, and sends a reply message to the source node based on the relay configuration result.
  • a timer may be set, and the timer may be started in response to the target node receiving a request message sent by the source node, or in response to the target node sending configuration information to the target relay UE. device; and/or;
  • the timer is stopped.
  • multiple timers may also be set, wherein one timer may be set for each target relay UE that sends configuration information, wherein when the configuration is sent to the target relay UE After receiving the information, the timer corresponding to the target relay UE is started, and the timer corresponding to the target relay UE is stopped after receiving the first indication information sent by the target relay UE.
  • the above-mentioned method of sending a reply message to the source node based on the relay configuration result may include one or more of the following:
  • a confirmation message can be sent to the source node;
  • the target node In response to the target node receiving the first indication information sent by one or more target relay UEs indicating that the target relay UE has not successfully completed the relay configuration based on the configuration information, but the target node independently determines to connect the UE to be switched through a direct link, Send a confirmation message to the source node;
  • the target node In response to the timer expiration, but the target node independently determines to connect to the UE to be switched through a direct link, it sends a confirmation message to the source node;
  • the target node In response to the target node receiving the first indication information sent by one or more target relay UEs indicating that the target relay UE has failed to complete the relay configuration based on the configuration information, send the failure message to the source node;
  • the failure message is sent to the source node.
  • the confirmation message may include one or more of the following:
  • the second indication information is used to indicate the connection path that the target node allows to switch; the connection path that the target node allows to switch can be a direct link or an indirect link.
  • the failure message may include one or more of the following:
  • the third indication information is used to indicate the connection path where the target node fails to switch
  • the source node after the source node receives the reply message sent by the target node, it can send a configuration message carrying the path switching configuration to the UE to be switched based on the content carried in the reply message, so that the UE to be switched can Path switching can be completed based on this configuration message.
  • the configuration message may include a connection path allowed to be switched by the target node and/or an identification of the target relay UE that successfully completes the relay configuration.
  • the target node will receive the request message sent by the source node, and the request message is used to request the target node to prepare for path switching; and, the target node will also send a message to the target node.
  • the relay UE sends configuration information; and will receive the first indication information sent by the target relay UE.
  • the first indication information is used to indicate whether the target relay UE successfully completes the relay configuration based on the configuration information; in addition, the target node will also send a message to the target relay UE.
  • the source node sends a reply message.
  • the embodiment of the present disclosure involves the step of relay configuration of the relay UE by the target node in the path switching process, so that the method of the present disclosure can be applied to path switching scenarios involving inter-base station handover (inter-gNB).
  • inter-gNB inter-base station handover
  • Figure 2c is a schematic flowchart of a path switching method provided by an embodiment of the present disclosure. The method is executed by the target node. As shown in Figure 2c, the path switching method may include the following steps:
  • Step 201c Receive a request message sent by the source node.
  • the request message is used to request the target node to prepare for path switching for the UE to be switched.
  • Step 202c In response to the target node receiving the request message sent by the source node, the target node independently determines to connect the UE to be switched through a direct link, and sends the confirmation message to the source node.
  • steps 201c-202c please refer to the description of the above embodiment.
  • the target node will receive the request message sent by the source node, and the request message is used to request the target node to prepare for path switching; and, the target node will also send a message to the target node.
  • the relay UE sends configuration information; and will receive the first indication information sent by the target relay UE.
  • the first indication information is used to indicate whether the target relay UE successfully completes the relay configuration based on the configuration information; in addition, the target node will also send a message to the target relay UE.
  • the source node sends a reply message.
  • the embodiment of the present disclosure involves the step of relay configuration of the relay UE by the target node in the path switching process, so that the method of the present disclosure can be applied to path switching scenarios involving inter-base station handover (inter-gNB).
  • inter-gNB inter-base station handover
  • Figure 2d is a schematic flowchart of a path switching method provided by an embodiment of the present disclosure. The method is executed by the target node. As shown in Figure 2d, the path switching method may include the following steps:
  • Step 201d Receive a request message sent by the source node.
  • the request message is used to request the target node to prepare for path switching for the UE to be switched.
  • Step 202d In response to the target node independently determining to reject the path switching requested by the source node after receiving the request message sent by the source node, send the failure message to the source node.
  • steps 201d-202d please refer to the description of the above embodiment.
  • the target node will receive the request message sent by the source node, and the request message is used to request the target node to prepare for path switching; and, the target node will also send a message to the target node.
  • the relay UE sends configuration information; and will receive the first indication information sent by the target relay UE.
  • the first indication information is used to indicate whether the target relay UE successfully completes the relay configuration based on the configuration information; in addition, the target node will also send a message to the target relay UE.
  • the source node sends a reply message.
  • the embodiment of the present disclosure involves the step of relay configuration of the relay UE by the target node in the path switching process, so that the method of the present disclosure can be applied to path switching scenarios involving inter-base station handover (inter-gNB).
  • inter-gNB inter-base station handover
  • a timer can be defined, and the start time and stop time of the timer can be defined, so that the target node determines when to send a confirmation message to the source node based on the timer, When to send a failure message to the source node.
  • Figures 2e-2j are embodiments related to timers.
  • Figure 2e is a schematic flowchart of a path switching method provided by an embodiment of the present disclosure. The method is executed by the target node. As shown in Figure 2e, the path switching method may include the following steps:
  • Step 201e In response to the target node receiving the request message sent by the source node, or in response to the target node sending configuration information to the target relay UE, start the timer.
  • the target node will receive the request message sent by the source node, and the request message is used to request the target node to prepare for path switching; and, the target node will also send a message to the target node.
  • the relay UE sends configuration information. It can be seen from this that the embodiment of the present disclosure involves the step of relay configuration of the relay UE by the target node in the path switching process, so that the method of the present disclosure can be applied to path switching scenarios involving inter-base station handover (inter-gNB).
  • inter-gNB inter-base station handover
  • inter-gNB inter-base station handover
  • Figure 2f is a schematic flowchart of a path switching method provided by an embodiment of the present disclosure. The method is executed by the target node. As shown in Figure 2f, the path switching method may include the following steps:
  • Step 201f In response to the target node receiving the first indication information sent by one or more target relay UEs, or in response to the target node sending a reply message to the source node, stop the timer.
  • the target node will receive the request message sent by the source node, and the request message is used to request the target node to prepare for path switching; and, the target node will also send a message to the target node.
  • the relay UE sends configuration information. It can be seen from this that the embodiment of the present disclosure involves the step of relay configuration of the relay UE by the target node in the path switching process, so that the method of the present disclosure can be applied to path switching scenarios involving inter-base station handover (inter-gNB).
  • inter-gNB inter-base station handover
  • inter-gNB inter-base station handover
  • Figure 2g is a schematic flowchart of a path switching method provided by an embodiment of the present disclosure. The method is executed by the target node. As shown in Figure 2g, the path switching method may include the following steps:
  • Step 201g In response to the timer expiration, but the target node independently determines to connect to the UE to be switched through a direct link, send a confirmation message to the source node.
  • the target node will receive the request message sent by the source node, and the request message is used to request the target node to prepare for path switching; and, the target node will also send a message to the target node.
  • the relay UE sends configuration information. It can be seen from this that the embodiment of the present disclosure involves the step of relay configuration of the relay UE by the target node in the path switching process, so that the method of the present disclosure can be applied to path switching scenarios involving inter-base station handover (inter-gNB).
  • inter-gNB inter-base station handover
  • inter-gNB inter-base station handover
  • Figure 2h is a schematic flowchart of a path switching method provided by an embodiment of the present disclosure. The method is executed by the target node. As shown in Figure 2h, the path switching method may include the following steps:
  • Step 201h In response to timer expiration, send the failure message to the source node.
  • the target node will receive the request message sent by the source node, and the request message is used to request the target node to prepare for path switching; and, the target node will also send a message to the target node.
  • the relay UE sends configuration information. It can be seen from this that the embodiment of the present disclosure involves the step of relay configuration of the relay UE by the target node in the path switching process, so that the method of the present disclosure can be applied to path switching scenarios involving inter-base station handover (inter-gNB).
  • inter-gNB inter-base station handover
  • inter-gNB inter-base station handover
  • Figure 2i is a schematic flowchart of a path switching method provided by an embodiment of the present disclosure. The method is executed by a target node. As shown in Figure 2i, the path switching method may include the following steps:
  • Step 201i If a timer is defined for each target relay UE that has sent configuration information, after the configuration information is sent to the target relay UE, the timer corresponding to the target relay UE is started.
  • the target node will receive the request message sent by the source node, and the request message is used to request the target node to prepare for path switching; and, the target node will also send a message to the target node.
  • the relay UE sends configuration information. It can be seen from this that the embodiment of the present disclosure involves the step of relay configuration of the relay UE by the target node in the path switching process, so that the method of the present disclosure can be applied to path switching scenarios involving inter-base station handover (inter-gNB).
  • inter-gNB inter-base station handover
  • inter-gNB inter-base station handover
  • Figure 2j is a schematic flowchart of a path switching method provided by an embodiment of the present disclosure. The method is executed by the target node. As shown in Figure 2j, the path switching method may include the following steps:
  • Step 201j If a timer is defined for each target relay UE that has sent configuration information, the timer corresponding to the target relay UE is stopped after receiving the first indication information sent by the target relay UE.
  • the target node will receive the request message sent by the source node, and the request message is used to request the target node to prepare for path switching; and, the target node will also send a message to the target node.
  • the relay UE sends configuration information. It can be seen from this that the embodiment of the present disclosure involves the step of relay configuration of the relay UE by the target node in the path switching process, so that the method of the present disclosure can be applied to path switching scenarios involving inter-base station handover (inter-gNB).
  • inter-gNB inter-base station handover
  • inter-gNB inter-base station handover
  • Figure 3 is a schematic flowchart of a path switching method provided by an embodiment of the present disclosure. The method is executed by a target node. As shown in Figure 3, the path switching method may include the following steps:
  • Step 301 Receive a request message sent by the source node.
  • the request message is used to request the target node to prepare for path switching for the UE to be switched.
  • step 301 For detailed introduction to step 301, please refer to the above embodiment description.
  • the target node will receive the request message sent by the source node, and the request message is used to request the target node to prepare for path switching; and, the target node will also send a message to the target node.
  • the relay UE sends configuration information. It can be seen from this that the embodiment of the present disclosure involves the step of relay configuration of the relay UE by the target node in the path switching process, so that the method of the present disclosure can be applied to path switching scenarios involving inter-base station handover (inter-gNB).
  • inter-gNB inter-base station handover
  • inter-gNB inter-base station handover
  • FIG 4 is a schematic flowchart of a path switching method provided by an embodiment of the present disclosure. The method is executed by a target node. As shown in Figure 3, the path switching method may include the following steps:
  • Step 401 Send configuration information to the target relay UE.
  • step 401 For detailed introduction to step 401, please refer to the above embodiment description.
  • the target node will receive the request message sent by the source node, and the request message is used to request the target node to prepare for path switching; and, the target node will also send a message to the target node.
  • the relay UE sends configuration information. It can be seen from this that the embodiment of the present disclosure involves the step of relay configuration of the relay UE by the target node in the path switching process, so that the method of the present disclosure can be applied to path switching scenarios involving inter-base station handover (inter-gNB).
  • inter-gNB inter-base station handover
  • inter-gNB inter-base station handover
  • FIG 5 is a schematic flowchart of a path switching method provided by an embodiment of the present disclosure. The method is executed by a target node. As shown in Figure 3, the path switching method may include the following steps:
  • Step 501 Receive first indication information sent by the target relay UE.
  • the first indication information is used to indicate whether the target relay UE successfully completes relay configuration based on the configuration information.
  • step 501 For detailed introduction to step 501, please refer to the above embodiment description.
  • the target node will receive the request message sent by the source node, and the request message is used to request the target node to prepare for path switching; and, the target node will also send a message to the target node.
  • the relay UE sends configuration information. It can be seen from this that the embodiment of the present disclosure involves the step of relay configuration of the relay UE by the target node in the path switching process, so that the method of the present disclosure can be applied to path switching scenarios involving inter-base station handover (inter-gNB).
  • inter-gNB inter-base station handover
  • inter-gNB inter-base station handover
  • Figure 6 is a schematic flowchart of a path switching method provided by an embodiment of the present disclosure. The method is executed by a target node. As shown in Figure 3, the path switching method may include the following steps:
  • Step 601 Send a reply message to the source node.
  • step 601 For detailed introduction to step 601, please refer to the above embodiment description.
  • the target node will receive the request message sent by the source node, and the request message is used to request the target node to prepare for path switching; and, the target node will also send a message to the target node.
  • the relay UE sends configuration information. It can be seen from this that the embodiment of the present disclosure involves the step of relay configuration of the relay UE by the target node in the path switching process, so that the method of the present disclosure can be applied to path switching scenarios involving inter-base station handover (inter-gNB).
  • inter-gNB inter-base station handover
  • inter-gNB inter-base station handover
  • Figure 7 is a schematic flowchart of a path switching method provided by an embodiment of the present disclosure. The method is executed by a relay UE. As shown in Figure 7, the path switching method may include the following steps:
  • Step 701 Receive configuration information sent by the target node; and/or send first indication information to the target node, where the first indication information is used to indicate whether the target relay UE successfully completes relay configuration based on the configuration information.
  • step 701 For detailed introduction to step 701, please refer to the above embodiment description.
  • the target relay UE will receive the configuration information sent by the target node; and/or, the target relay UE will send the first indication information to the target node.
  • the first indication information is used to indicate whether the target relay UE successfully completes the relay configuration based on the configuration information.
  • inter-gNB inter-base station handover
  • FIG 8 is a schematic flowchart of a path switching method provided by an embodiment of the present disclosure. The method is executed by a relay UE. As shown in Figure 8, the path switching method may include the following steps:
  • Step 801 Receive configuration information sent by the target node.
  • step 801 For detailed introduction to step 801, please refer to the above embodiment description.
  • the target relay UE will receive the configuration information sent by the target node.
  • the embodiment of the present disclosure involves the step of relay configuration of the relay UE by the target node in the path switching process, so that the method of the present disclosure can be applied to path switching scenarios involving inter-base station handover (inter-gNB).
  • inter-gNB inter-base station handover
  • inter-gNB inter-base station handover
  • Figure 9 is a schematic flowchart of a path switching method provided by an embodiment of the present disclosure. The method is executed by a relay UE. As shown in Figure 9, the path switching method may include the following steps:
  • Step 901 Send first indication information to the target node.
  • the first indication information is used to indicate whether the target relay UE successfully completes the relay configuration based on the configuration information.
  • step 901 For detailed introduction to step 901, please refer to the above embodiment description.
  • the target relay UE will send the first indication information to the target node.
  • the first indication information is used to indicate whether the target relay UE successfully completes the operation based on the configuration information.
  • Relay configuration It can be seen from this that the embodiment of the present disclosure involves the step of relay configuration of the relay UE by the target node in the path switching process, so that the method of the present disclosure can be applied to path switching scenarios involving inter-base station handover (inter-gNB).
  • inter-gNB inter-base station handover
  • inter-gNB inter-base station handover
  • Figure 10a is a schematic flowchart of a path switching method provided by an embodiment of the present disclosure. The method is executed by a relay UE. As shown in Figure 10a, the path switching method may include at least one of the following steps:
  • Step 1001a Receive the configuration information sent by the target node.
  • Step 1002a Send first indication information to the target node, where the first indication information is used to indicate whether the target relay UE successfully completes the relay configuration based on the configuration information.
  • steps 1001a-1002a please refer to the above embodiment description.
  • the target relay UE will receive the configuration information sent by the target node; then, the target relay UE will send the first indication information to the target node, and the first indication information will be sent to the target node.
  • the indication information is used to indicate whether the target relay UE successfully completes the relay configuration based on the configuration information. It can be seen from this that the embodiment of the present disclosure involves the step of relay configuration of the relay UE by the target node in the path switching process, so that the method of the present disclosure can be applied to path switching scenarios involving inter-base station handover (inter-gNB).
  • inter-gNB inter-base station handover
  • inter-gNB inter-base station handover
  • Figure 10b is a schematic flowchart of a path switching method provided by an embodiment of the present disclosure. The method is executed by a source node. As shown in Figure 10b, the path switching method may include at least one of the following steps:
  • Step 1001b Send a request message to the target node, where the request message is used to request the target node to prepare for path switching. and/or, receiving a reply message sent by the target node.
  • step 1001b For detailed introduction to step 1001b, please refer to the above embodiment description.
  • the source node will send a request message to the target node to request the target node to prepare for path switching, and/or the source node will receive the reply message sent by the target node.
  • the embodiments of the present disclosure involve interactive steps between the target node and the source node in the path switching process, so that the method of the present disclosure can be applied to path switching scenarios involving inter-base station handover (inter-gNB), so that The path switching process involving inter-base station handover (inter-gNB) can be successfully executed to ensure the service continuity of the UE to be switched and avoid the path switching failure or path switching delay of the UE to be switched due to the non-configuration of the relay UE.
  • inter-gNB inter-base station handover
  • Figure 10c is a schematic flowchart of a path switching method provided by an embodiment of the present disclosure. The method is executed by the source node. As shown in Figure 10c, the path switching method may include at least one of the following steps:
  • Step 1001c Send a request message to the target node, where the request message is used to request the target node to prepare for path switching.
  • step 1001c For detailed introduction to step 1001c, please refer to the above embodiment description.
  • the source node sends a request message to the target node to request the target node to prepare for path switching.
  • the embodiments of the present disclosure involve interactive steps between the target node and the source node in the path switching process, so that the method of the present disclosure can be applied to path switching scenarios involving inter-base station handover (inter-gNB), so that The path switching process involving inter-base station handover (inter-gNB) can be successfully executed to ensure the service continuity of the UE to be switched and avoid the path switching failure or path switching delay of the UE to be switched due to the non-configuration of the relay UE.
  • inter-gNB inter-base station handover
  • Figure 10d is a schematic flowchart of a path switching method provided by an embodiment of the present disclosure. The method is executed by a source node. As shown in Figure 10d, the path switching method may include at least one of the following steps:
  • Step 1001d Receive the reply message sent by the target node.
  • step 1001d For a detailed introduction to step 1001d, please refer to the description of the above embodiment.
  • the source node receives the reply message sent by the target node.
  • the embodiments of the present disclosure involve interactive steps between the target node and the source node in the path switching process, so that the method of the present disclosure can be applied to path switching scenarios involving inter-base station handover (inter-gNB), so that The path switching process involving inter-base station handover (inter-gNB) can be successfully executed to ensure the service continuity of the UE to be switched and avoid the path switching failure or path switching delay of the UE to be switched due to the non-configuration of the relay UE.
  • inter-gNB inter-base station handover
  • Figure 10e is a schematic flowchart of a path switching method provided by an embodiment of the present disclosure. The method is executed by a source node. As shown in Figure 10e, the path switching method may include at least one of the following steps:
  • Step 1001e Send a request message to the target node, where the request message is used to request the target node to prepare for path switching.
  • Step 1002e Receive the reply message sent by the target node.
  • steps 1001e-1002e please refer to the description of the above embodiment.
  • the source node will send a request message to the target node to request the target node to prepare for path switching, and the source node will receive the reply message sent by the target node.
  • the embodiments of the present disclosure involve interactive steps between the target node and the source node in the path switching process, so that the method of the present disclosure can be applied to path switching scenarios involving inter-base station handover (inter-gNB), so that The path switching process involving inter-base station handover (inter-gNB) can be successfully executed to ensure the service continuity of the UE to be switched and avoid the path switching failure or path switching delay of the UE to be switched due to the non-configuration of the relay UE.
  • inter-gNB inter-base station handover
  • FIG. 11 is a schematic flowchart of a path switching method provided by an embodiment of the present disclosure. As shown in Figure 11, the flow of the method includes one or more of the following steps:
  • Step 1 Measurement configuration and reporting are performed between the remote UE and the source node.
  • Step 2 The source node determines that the remote UE is to be handed over to the target node.
  • Step 3 The source node sends a handover request (HANDOVER REQUEST) message to the target node.
  • the handover request message may include one or more target relay UEs recommended by the source node.
  • Step 4 The target node configures RRC reconfiguration for the remote UE on the target relay UE, that is, performs relay configuration on the target relay UE.
  • this remote UE is a potential remote UE.
  • the target relay UE can perform remote UE configuration according to the configuration information (such as the configuration information carried in the RRC reconfiguration), and when the configuration is completed, it replies RRC to the target node. Reconfiguration complete message.
  • Step 5 In response to receiving the RRC reconfiguration completion message from the target relay UE and/or in response to completing handover preparation for the remote UE, the target node sends a handover request acknowledgment (Handover Request Acknowledge) message to the source node.
  • a handover request acknowledgment Handover Request Acknowledge
  • Step 6 The source node sends an RRC reconfiguration message carrying the path switching configuration to the remote UE.
  • the RRC reconfiguration message may include the identification and/or configuration information of the target relay UE.
  • Step 7 The remote UE establishes a PC5 connection with the target relay UE based on the RRC reconfiguration message to realize an indirect connection with the target node.
  • Step 8 The remote UE sends an RRC reconfiguration completion message to the target node through the relay UE.
  • Step 9 The remote UE exchanges uplink and downlink data with the target node through the relay UE.
  • the target node receives the request message sent by the source node
  • the request message is used to request to prepare resources for path switching.
  • the request message may be a handover request message (HANDOVER REQUEST).
  • step 1 after receiving the request message, the configuration information is sent to the target relay UE.
  • the specific target relay UEs to which the configuration information is sent are determined by the target node based on implementation.
  • the target node determines which possible (at least one) target relay UE to send the configuration information based on implementation.
  • the relay UE may be a U2N relay UE or a U2U relay UE.
  • the source node and the target node may be gNB
  • the configuration information includes configuration related to relay operation.
  • the relay transmission is provided for the remote UE that performs path switching as described in 1.
  • the target node needs to send the configuration information to the target relay UE.
  • the configuration information may include one or more of the local ID and/or L2ID of the remote UE, Uu and PC5 relay RL channel configuration, and bearer mapping configuration.
  • the configuration information includes relay operation-related configurations.
  • the network provides configuration parameters for relay transmission.
  • the configuration information may be sl-L2RelayUE-Config, which may be represented by IE SL-L2RelayUE-Config-r17.
  • the configuration information is included in the RRC reconfiguration information.
  • sending configuration information to the target relay UE includes:
  • the target node In response to the target relay UE being a connected UE, the target node sends an RRC reconfiguration message containing this configuration information to the target relay UE for relay UE configuration.
  • the target node In response to the target relay UE being an idle or inactive UE, the target node sends an RRC establishment message to the target relay UE, establishes an RRC connection for the target relay UE, and then sends configuration information to the target relay UE.
  • Relay UE configuration In response to the target relay UE being an idle or inactive UE, the target node sends an RRC establishment message to the target relay UE, establishes an RRC connection for the target relay UE, and then sends configuration information to the target relay UE.
  • Relay UE configuration Relay UE configuration.
  • the target node Based on step 1, in response to receiving the request message sent by the source node, the target node sends a reply message to the source node.
  • the reply message includes:
  • the reply message may be a confirmation message (response message) informing the source node of the resources prepared by the target node for path switching or a failure message (rejection message)
  • the response message may be a handover request confirmation (HANDOVER REQUEST ACKNOWLEDGE) message.
  • the reply message may be a failure message (rejection message) informing the source node that the path switching preparation has failed or rejecting the path switching.
  • the failure message may be a handover preparation failure (HANDOVER PREPARATION FAILURE) message.
  • the target node receives the request message sent by the source node or sends configuration information to the target relay UE, the timer is started.
  • a failure message is sent to the source node or the target node decides to connect to the remote UE through a direct link, and then sends a confirmation message to the source node.
  • the target node receives a message indicating success or failure of configuration sent by at least one (multiple/all) target relay UEs or sends a reply message described in 6, the timer is stopped.
  • a timer can be set for each relay UE that sends configuration information. After the configuration information is sent to the target relay UE, the timer is started. When the configuration information sent by the relay UE is received, Stop this timer after a message indicating configuration success or failure.
  • only one timer can be set.
  • the timer is started.
  • the target node receives the instruction configuration sent by at least one (multiple/all) relay UEs, Stop this timer after a success or failure message.
  • the target node sends a confirmation message to the source node, including one or more of the following:
  • the target node When the target node receives a message indicating successful configuration sent by at least one (multiple/all) target relay UEs, it sends a confirmation message to the source node.
  • the message indicating successful configuration may be an RRC reconfiguration complete message.
  • the target node decides to connect to the remote UE through a direct link, it sends a confirmation message to the source node.
  • the target relay UE is the target relay UE to which the configuration information was sent in step 2.
  • the confirmation message may include an indication of direct connection or indirect connection, and may also include the target relay UE identification.
  • the target node sends a failure message to the source node, including one or more of the following:
  • the target node receives a message indicating a configuration failure sent by at least one (multiple/all) target relay UEs, and then sends a failure message to the source node.
  • the message indicating configuration failure may be an RRC reestablishment request message.
  • the target relay UE is the target relay UE to which the configuration information was sent in step 2.
  • the failure message may include an indication of direct connection or indirect connection failure, and may also include the identification of the target relay UE whose configuration failed.
  • the source node After the source node receives the confirmation message sent by the target node, the source node sends a configuration message carrying the path switching configuration to the remote UE.
  • Figure 12 is a schematic structural diagram of a communication device provided by an embodiment of the present disclosure. As shown in Figure 12, the device may include:
  • a transceiver module configured to receive a request message sent by the source node, where the request message is used to request the target node to prepare for path switching;
  • the transceiver module is also used to send configuration information to the target relay UE.
  • the target node will receive the request message sent by the source node, and the request message is used to request the target node to prepare for path switching; and, the target node will also send a request message to the target node.
  • the UE then sends configuration information.
  • the embodiment of the present disclosure involves the step of relay configuration of the relay UE by the target node in the path switching process, so that the method of the present disclosure can be applied to path switching scenarios involving inter-base station handover (inter-gNB).
  • inter-gNB inter-base station handover
  • inter-gNB inter-base station handover
  • the transceiver module is also used to:
  • the configuration information includes at least one of the following:
  • the local identification ID of the user equipment UE to be switched
  • the layer 2L2ID of the UE to be switched
  • the transceiver module is also used for at least one of:
  • one or more target relay UEs are autonomously determined, and the configuration information is sent to the autonomously determined target relay UEs.
  • the transceiver module is also used to:
  • a radio resource control RRC connection is established for the target relay UE, and the configuration information is sent to the target relay UE.
  • the reply message includes a confirmation message indicating that the source node request is successful or a failure message indicating that the source node request fails.
  • the transceiver module is also used for at least one of the following:
  • the failure message is sent to the source node.
  • the device is also used for at least one of the following:
  • the timer is stopped.
  • the transceiver module is also used for at least one of the following:
  • the target node In response to the target node receiving the first indication information sent by one or more target relay UEs indicating that the target relay UE has not successfully completed the relay configuration based on the configuration information, but the target node independently determines that the Directly link the UE to be switched and send the confirmation message to the source node;
  • the target node In response to the timer expiration, but the target node autonomously determines to connect the UE to be switched through a direct link, send the confirmation message to the source node;
  • the source node In response to the target node receiving the first indication information sent by one or more target relay UEs indicating that the target relay UE has failed to complete the relay configuration based on the configuration information, the source node sends the failure message;
  • the failure message is sent to the source node.
  • the confirmation message includes at least one of the following:
  • second indication information used to indicate that the target node allows the connection path to be switched
  • the failure message includes at least one of the following:
  • the third indication information is used to indicate the connection path where the target node fails to switch
  • connection path includes at least one of the following:
  • Figure 13a is a schematic structural diagram of a communication device provided by an embodiment of the present disclosure. As shown in Figure 13a, the device may include:
  • Transceiver module used to receive configuration information sent by the target node
  • the target relay UE will receive the configuration information sent by the target node; and/or, the target relay UE will send the first indication information to the target node, and the target relay UE will send the first indication information to the target node.
  • An indication information is used to indicate whether the target relay UE successfully completes the relay configuration based on the configuration information.
  • inter-gNB inter-base station handover
  • the configuration information includes at least one of the following:
  • the local ID of the UE to be switched
  • the transceiver module is also used to:
  • an RRC connection is established with the target node, and the configuration information sent by the target node is received.
  • Figure 13b is a schematic structural diagram of a communication device provided by an embodiment of the present disclosure. As shown in Figure 13b, the device may include:
  • the transceiver module is configured to send a request message to the target node, where the request message is used to request the target node to prepare for path switching.
  • the source node will send a request message to the target node to request the target node to prepare for path switching, and/or the source node will receive the reply message sent by the target node.
  • the embodiments of the present disclosure involve interactive steps between the target node and the source node in the path switching process, so that the method of the present disclosure can be applied to path switching scenarios involving inter-base station handover (inter-gNB), so that The path switching process involving inter-base station handover (inter-gNB) can be successfully executed to ensure the service continuity of the UE to be switched and avoid the path switching failure or path switching delay of the UE to be switched due to the non-configuration of the relay UE.
  • inter-gNB inter-base station handover
  • the device is further configured to: receive a reply message sent by the target node.
  • the request message includes identities of one or more target relay UEs.
  • the reply message includes a confirmation message indicating that the source node request is successful or a failure message indicating that the source node request fails.
  • the confirmation message includes at least one of the following:
  • second indication information used to indicate that the target node allows the connection path to be switched
  • the failure message includes at least one of the following:
  • the third indication information is used to indicate the connection path where the target node fails to switch
  • connection path includes at least one of the following:
  • FIG 14 is a schematic structural diagram of a communication device 1400 provided by an embodiment of the present application.
  • the communication device 1400 may be a network device, a terminal device, a chip, a chip system, or a processor that supports a network device to implement the above method, or a chip, a chip system, or a processor that supports a terminal device to implement the above method. Processor etc.
  • the device can be used to implement the method described in the above method embodiment. For details, please refer to the description in the above method embodiment.
  • Communication device 1400 may include one or more processors 1401.
  • the processor 1401 may be a general-purpose processor or a special-purpose processor, or the like.
  • it can be a baseband processor or a central processing unit.
  • the baseband processor can be used to process communication protocols and communication data.
  • the central processor can be used to control communication devices (such as base stations, baseband chips, terminal equipment, terminal equipment chips, DU or CU, etc.) and execute computer programs. , processing data for computer programs.
  • the communication device 1400 may also include one or more memories 1402, on which a computer program 1404 may be stored.
  • the processor 1401 executes the computer program 1404, so that the communication device 1400 performs the steps described in the above method embodiments. method.
  • the memory 1402 may also store data.
  • the communication device 1400 and the memory 1402 can be provided separately or integrated together.
  • the communication device 1400 may also include a transceiver 1405 and an antenna 1406.
  • the transceiver 1405 may be called a transceiver unit, a transceiver, a transceiver circuit, etc., and is used to implement transceiver functions.
  • the transceiver 1405 may include a receiver and a transmitter.
  • the receiver may be called a receiver or a receiving circuit, etc., used to implement the receiving function;
  • the transmitter may be called a transmitter, a transmitting circuit, etc., used to implement the transmitting function.
  • the communication device 1400 may also include one or more interface circuits 1407.
  • the interface circuit 1407 is used to receive code instructions and transmit them to the processor 1401 .
  • the processor 1401 executes the code instructions to cause the communication device 1400 to perform the method described in the above method embodiment.
  • the processor 1401 may include a transceiver for implementing receiving and transmitting functions.
  • the transceiver may be a transceiver circuit, an interface, or an interface circuit.
  • the transceiver circuits, interfaces or interface circuits used to implement the receiving and transmitting functions can be separate or integrated together.
  • the above-mentioned transceiver circuit, interface or interface circuit can be used for reading and writing codes/data, or the above-mentioned transceiver circuit, interface or interface circuit can be used for signal transmission or transfer.
  • the processor 1401 may store a computer program 1403, and the computer program 1403 runs on the processor 1401, causing the communication device 1400 to perform the method described in the above method embodiment.
  • the computer program 1403 may be solidified in the processor 1401, in which case the processor 1401 may be implemented by hardware.
  • the communication device 1400 may include a circuit, which may implement the functions of sending or receiving or communicating in the foregoing method embodiments.
  • the processor and transceiver described in this application can be implemented in integrated circuits (ICs), analog ICs, radio frequency integrated circuits RFICs, mixed signal ICs, application specific integrated circuits (ASICs), printed circuit boards ( printed circuit board (PCB), electronic equipment, etc.
  • the processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), n-type metal oxide-semiconductor (NMOS), P-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.
  • CMOS complementary metal oxide semiconductor
  • NMOS n-type metal oxide-semiconductor
  • PMOS P-type Metal oxide semiconductor
  • BJT bipolar junction transistor
  • BiCMOS bipolar CMOS
  • SiGe silicon germanium
  • GaAs gallium arsenide
  • the communication device described in the above embodiments may be a network device or a terminal device, but the scope of the communication device described in this application is not limited thereto, and the structure of the communication device may not be limited by FIG. 14 .
  • the communication device may be a stand-alone device or may be part of a larger device.
  • the communication device may be:
  • the IC collection may also include storage components for storing data and computer programs;
  • the communication device may be a chip or a chip system
  • the schematic structural diagram of the chip shown in FIG. 15 refer to the schematic structural diagram of the chip shown in FIG. 15 .
  • the chip shown in Figure 15 includes a processor 1501 and an interface 1502.
  • the number of processors 1501 may be one or more, and the number of interfaces 1502 may be multiple.
  • the chip also includes a memory 1503, which is used to store necessary computer programs and data.
  • This application also provides a readable storage medium on which instructions are stored. When the instructions are executed by a computer, the functions of any of the above method embodiments are implemented.
  • This application also provides a computer program product, which, when executed by a computer, implements the functions of any of the above method embodiments.
  • the computer program product includes one or more computer programs.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer program may be stored in or transferred from one computer-readable storage medium to another, for example, the computer program may be transferred from a website, computer, server, or data center Transmission to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more available media integrated therein.
  • the available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVD)), or semiconductor media (e.g., solid state disks, SSD)) etc.
  • magnetic media e.g., floppy disks, hard disks, magnetic tapes
  • optical media e.g., high-density digital video discs (DVD)
  • DVD digital video discs
  • semiconductor media e.g., solid state disks, SSD
  • At least one in this application can also be described as one or more, and the plurality can be two, three, four or more, which is not limited by this application.
  • the technical feature is distinguished by “first”, “second”, “third”, “A”, “B”, “C” and “D”, etc.
  • the technical features described in “first”, “second”, “third”, “A”, “B”, “C” and “D” are in no particular order or order.
  • the corresponding relationships shown in each table in this application can be configured or predefined.
  • the values of the information in each table are only examples and can be configured as other values, which are not limited by this application.
  • the corresponding relationships shown in some rows may not be configured.
  • appropriate deformation adjustments can be made based on the above table, such as splitting, merging, etc.
  • the names of the parameters shown in the titles of the above tables may also be other names understandable by the communication device, and the values or expressions of the parameters may also be other values or expressions understandable by the communication device.
  • other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables. wait.
  • Predefinition in this application can be understood as definition, pre-definition, storage, pre-storage, pre-negotiation, pre-configuration, solidification, or pre-burning.

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Abstract

本公开提出一种路径切换方法、装置、设备及存储介质，该方法包括：接收源节点发送的请求消息，该请求消息用于请求目标节点进行路径切换准备（201a）；向目标中继 UE 发送配置信息（202a）。本公开在路径切换流程中涉及到了目标节点对中继UE进行中继配置的步骤，从而本公开的方法可以应用到涉及有基站间切换(inter-gNB)的路径切换场景中，以使得涉及基站间切换(inter-gNB)的路径切换流程能够成功执行，确保待切换UE的业务连续性，避免待切换UE由于中继 UE未配置导致的路径切换失败，或者路径切换时延。

Description

一种路径切换方法、装置、设备及存储介质 技术领域
本公开涉及通信技术领域，尤其涉及路径切换方法、装置、设备及存储介质。
背景技术
在通信系统中，用户设备(User Equipment，UE)可以直接连接至基站，也可以不直接与基站连接而通过另外一个UE的中继实现与基站的通信。其中，与基站没有连接的UE称为远端UE(remote UE)，提供中继功能的UE称为中继UE(relay UE)，远端UE与中继UE之间通过sidelink(SL)通信。以及，UE直接与基站连接称为直接链路(Direct Link)，UE通过中继UE与基站连接称为间接链路(Indirect Link)。
相关技术中，会对UE的连接路径进行切换，其中，在R18版本中，会引入基站间的路径切换。如，由间接链路：远端UE<->中继UE A<->基站X切换至直接链路：UE<->基站Y；或者，由直接链路：UE<->基站X切换至间接链路：远端UE<->中继UE A<->基站Y；或者，由间接链路：远端UE<->中继UE A<->基站X切换至间接链路：远端UE<->中继UE B<->基站Y。
但是，在路径切换时，若中继UE发生了变化，则需要基站对中继UE进行配置。然而由于相关技术现存的路径切换流程不涉及到基站的改变，因此，相关技术中均是由源基站对中继UE进行配置，而上述路径切换流程中均涉及到了基站间切换(inter-gNB)，则在上述路径切换流程中源节点和目标节点之间需要进行信令交互，且需要由目标基站对中继UE进行配置，而非源基站对中继UE进行配置。因此相关技术的路径切换方法无法适于上述的涉及到基站间切换(inter-gNB)的路径切换场景。
发明内容
本公开提出的路径切换方法、装置、设备及存储介质，以提供一种适用于基站间切换(inter-gNB)的路径切换场景的路径切换方法。
第一方面，本公开实施例提供一种路径切换方法，该方法被目标节点执行，包括：
接收源节点发送的请求消息，所述请求消息用于请求目标节点进行路径切换准备；
向目标中继UE发送配置信息。
本公开中，提供了一种路径切换方法，目标节点会接收源节点发送的请求消息，该请求消息用于请求目标节点进行路径切换准备；以及，目标节点还会向目标中继UE发送配置信息。由此可知，本公开实施例在路径切换流程中涉及到了目标节点对中继UE进行中继配置的步骤，从而本公开的方法可以应用到涉及有基站间切换(inter-gNB)的路径切换场景中，以使得涉及基站间切换(inter-gNB)的路径切换流程能够成功执行，确保待切换UE的业务连续性，避免待切换UE由于中继UE未配置导致的路径切换失败，或者路径切换时延。
第二方面，本公开实施例提供一种路径切换方法，该方法被中继UE执行，包括：
接收目标节点发送的配置信息；
向所述目标节点发送第一指示信息，所述第一指示信息用于指示所述目标中继UE是否成功基于所述配置信息完成中继配置。
第三方面，本公开实施例提供一种路径切换方法，该方法被源节点执行，包括：
向目标节点发送请求消息，所述请求消息用于请求目标节点进行路径切换准备。
第四方面，本公开实施例提供一种通信装置，该装置被配置在目标节点中，包括：
收发模块，用于接收源节点发送的请求消息，所述请求消息用于请求目标节点进行路径切换准备；
所述收发模块，还用于向目标中继UE发送配置信息。
第五方面，本公开实施例提供一种通信装置，该装置被配置在中继UE中，包括：
收发模块，用于接收目标节点发送的配置信息；
向所述目标节点发送第一指示信息，所述第一指示信息用于指示所述目标中继UE是否成功基于所述配置信息完成中继配置。
第六方面，本公开实施例提供一种通信装置，该装置被配置在源节点中，包括：
收发模块，用于向目标节点发送请求消息，所述请求消息用于请求目标节点进行路径切换准备。
第七方面，本公开实施例提供一种通信装置，该通信装置包括处理器，当该处理器调用存储器中的计算机程序时，执行上述第一方面所述的方法。
第八方面，本公开实施例提供一种通信装置，该通信装置包括处理器，当该处理器调用存储器中的计算机程序时，执行上述第二方面所述的方法。
第九方面，本公开实施例提供一种通信装置，该通信装置包括处理器，当该处理器调用存储器中的计算机程序时，执行上述第三方面所述的方法。
第十方面，本公开实施例提供一种通信装置，该通信装置包括处理器和存储器，该存储器中存储有计算机程序；所述处理器执行该存储器所存储的计算机程序，以使该通信装置执行上述第一方面所述的方法。
第十一方面，本公开实施例提供一种通信装置，该通信装置包括处理器和存储器，该存储器中存储有计算机程序；所述处理器执行该存储器所存储的计算机程序，以使该通信装置执行上述第二方面所述的方法。
第十二方面，本公开实施例提供一种通信装置，该通信装置包括处理器和存储器，该存储器中存储有计算机程序；所述处理器执行该存储器所存储的计算机程序，以使该通信装置执行上述第三方面所述的方法。
第十三方面，本公开实施例提供一种通信装置，该装置包括处理器和接口电路，该接口电路用于接收代码指令并传输至该处理器，该处理器用于运行所述代码指令以使该装置执行上述第一方面所述的方法。
第十四方面，本公开实施例提供一种通信装置，该装置包括处理器和接口电路，该接口电路用于接收代码指令并传输至该处理器，该处理器用于运行所述代码指令以使该装置执行上述第二方面所述的方法。
第十五方面，本公开实施例提供一种通信装置，该装置包括处理器和接口电路，该接口电路用于接收代码指令并传输至该处理器，该处理器用于运行所述代码指令以使该装置执行上述第三方面所述的方法。
第十六方面，本公开实施例提供一种通信系统，该系统包括第四方面所述的通信装置至第六面所述的通信装置，或者，该系统包括第七方面所述的通信装置至第九方面所述的通信装置，或者，该系统包括第十方面所述的通信装置至第十二方面所述的通信装置，或者，该系统包括第十三方面所述的通信装置至第十五方面所述的通信装置。
第十七方面，本发明实施例提供一种计算机可读存储介质，用于储存为上述网络设备和/或上述终端设备所用的指令，当所述指令被执行时，使所述网络设备执行上述第一方面所述的方法，和/或，使所述终端设备执行上述第二方面所述的方法，和/或，使所述终端设备执行上述第三方面所述的方法。
第十八方面，本公开还提供一种包括计算机程序的计算机程序产品，当其在计算机上运行时，使得计算机执行上述第一方面至第三方面的任一方面所述的方法。
第十九方面，本公开提供一种芯片系统，该芯片系统包括至少一个处理器和接口，用于支持网络设备实现第一方面至所述的方法所涉及的功能，和/或，支持终端设备实现第二方面所述的方法所涉及的功能，和/或，支持终端设备实现第三方面所述的方法所涉及的功能，例如，确定或处理上述方法中所涉及的数据和信息中的至少一种。在一种可能的设计中，所述芯片系统还包括存储器，所述存储器，用于保存源辅节点必要的计算机程序和数据。该芯片系统，可以由芯片构成，也可以包括芯片和其他分立器件。
第二十方面，本公开提供一种计算机程序，当其在计算机上运行时，使得计算机执行上述第一方面至第三方面的任一方面所述的方法。
附图说明
本公开上述的和/或附加的方面和优点从下面结合附图对实施例的描述中将变得明显和容易理解，其中：
图1为本公开实施例提供的一种通信系统的架构示意图；
图2a-2j为本公开另一个实施例所提供的路径切换方法的流程示意图；
图3为本公开再一个实施例所提供的路径切换方法的流程示意图；
图4为本公开又一个实施例所提供的路径切换方法的流程示意图；
图5为本公开另一个实施例所提供的路径切换方法的流程示意图；
图6为本公开再一个实施例所提供的路径切换方法的流程示意图；
图7为本公开又一个实施例所提供的路径切换方法的流程示意图；
图8为本公开又一个实施例所提供的路径切换方法的流程示意图；
图9为本公开又一个实施例所提供的路径切换方法的流程示意图；
图10a-10e为本公开又一个实施例所提供的路径切换方法的流程示意图；
图11为本公开又一个实施例所提供的路径切换方法的流程示意图；
图12为本公开一个实施例所提供的通信装置的结构示意图；
图13a-13b为本公开另一个实施例所提供的通信装置的结构示意图；
图14是本公开一个实施例所提供的一种通信装置的框图；
图15为本公开一个实施例所提供的一种芯片的结构示意图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开实施例相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本公开实施例的一些方面相一致的装置和方法的例子。
在本公开实施例使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本公开实施例。在本公开实施例和所附权利要求书中所使用的单数形式的“一种”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。还应当理解，本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
应当理解，尽管在本公开实施例可能采用术语第一、第二、第三等来描述各种信息，但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开。例如，在不脱离本公开实施例范围的情况下，第一信息也可以被称为第二信息，类似地，第二信息也可以被称为第一信息。取决于语境，如在此所使用的词语“如果”及“若”可以被解释成为“在……时”或“当……时”或“响应于确定”。
下面详细描述本公开的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的要素。下面通过参考附图描述的实施例是示例性的，旨在用于解释本公开，而不能理解为对本公开的限制。
为了便于理解，首先介绍本申请涉及的术语。
1、侧行链路(Sidelink，SL)
终端设备之间直接通信的链路。
2、远端UE
未与基站直接通信而通过其他UE与基站通信的UE。
3、潜在的远端UE
可能会从当前的直接链路切换至间接链路的UE。即：虽然当前是与基站直接连接的，但是后续可以通过其他UE与基站间接连接。
4、中继UE
用于实现其他UE与基站之间的中继通信的UE。
需要说明的是，本申请中，任一个实施例提供的路径切换方法可以单独执行，实施例中任一实现方式也可以单独执行，或是结合其他实施例，或其他实施例中的可能的实现方法一起被执行，还可以结合相关技术中的任一种技术方案一起被执行。
为了更好的理解本申请实施例公开的一种路径切换方法，下面首先对本申请实施例适用的通信系统进行描述。
请参见图1，图1为本公开实施例提供的一种通信系统的架构示意图。该通信系统可包括但不限于一个网络设备、一个远端终端设备和一个中继终端设备，图1所示的设备数量和形态仅用于举例并不构成对本公开实施例的限定，实际应用中可以包括两个或两个以上的网络设备，两个或两个以上的终端设备。图1所示的通信系统以包括一个网络设备11、一个网路设备12、一个中继终端设备13、一个待切换终端设备14为例。
需要说明的是，本公开实施例的技术方案可以应用于各种通信系统。例如：长期演进(long term evolution，LTE)系统、第五代(5th generation，5G)移动通信系统、5G新空口(new radio，NR)系统，或者其他未来的新型移动通信系统等。
本公开实施例中的网络设备11和网络设备12是网络侧的一种用于发射或接收信号的实体。例如，网络设备11可以为演进型基站(evolved NodeB，eNB)、发送接收点(transmission reception point，TRP)、NR系统中的下一代基站(next generation NodeB，gNB)、其他未来移动通信系统中的基站或无线保真(wireless fidelity，WiFi)系统中的接入节点等。本公开的实施例对网络设备所采用的具体技术和具体设备形态不做限定。本公开实施例提供的网络设备可以是由集中单元(central unit，CU)与分布式单元(distributed unit，DU)组成的，其中，CU也可以称为控制单元(control unit)，采用CU-DU的结构可以将网络设备，例如基站的协议层拆分开，部分协议层的功能放在CU集中控制，剩下部分或全部协议层的功能分布在DU中，由CU集中控制DU。
本公开实施例中的中继终端设备13和待切换终端设备14可以是用户侧的一种用于接收或发射信号的实体，如手机。终端设备也可以称为终端设备(terminal)、用户设备(user equipment，UE)、移动台(mobile station，MS)、移动终端设备(mobile terminal，MT)等。终端设备可以是具备通信功能的汽车、智能汽车、手机(mobile phone)、穿戴式设备、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端设备、无人驾驶(self-driving)中的无线终端设备、远程手术(remote medical surgery)中的无线终端设备、智能电网(smart grid)中的无线终端设备、运输安全(transportation safety)中的无线终端设备、智慧城市(smart city)中的无线终端设备、智慧家庭(smart home)中的无线终端设备等等。本公开的实施例对终端设备所采用的具体技术和具体设备形态不做限定。
可以理解的是，本公开实施例描述的通信系统是为了更加清楚的说明本公开实施例的技术方案，并不构成对于本公开实施例提供的技术方案的限定，本领域普通技术人员可知，随着系统架构的演变和新业务场景的出现，本公开实施例提供的技术方案对于类似的技术问题，同样适用。
下面参考附图对本公开实施例所提供的路径切换方法、装置、设备及存储介质进行详细描述。
图2a为本公开实施例所提供的一种路径切换方法的流程示意图，该方法由目标节点执行，如图2a所示，该路径切换方法可以包括以下步骤：
步骤201a、接收源节点发送的请求消息，该请求消息用于请求目标节点为待切换UE进行路径切换准备。
在本公开的一个实施例之中，上述的源节点和目标节点均可以为基站。
以及，在本公开的一个实施例之中，该请求消息可以为切换请求消息(HANDOVER REQUEST)。以及，该请求消息中可以包括有源节点推荐的一个或多个目标中继UE的标识。其中，该目标中继UE可以为U2N中继UE或者U2U中继UE。该目标中继UE的标识可以为目标中继UE在源节点中对应的标识，和/或，目标中继UE在目标节点中对应的标识。该目标中继UE的标识例如可以为UE XnAP ID。
以及，在本公开的一个实施例之中，上述的待切换UE可以为与该源节点直接连接的UE，或，与该源节点间接连接的UE。上述的请求消息请求目标节点为待切换UE进行路径切换准备可以理解为： 请求目标节点为目标中继UE进行中继配置，以便待切换UE切换至该目标节点时可以通过中继UE与目标节点实现连接。
步骤202a、向目标中继UE发送配置信息。
其中，在本公开的一个实施例之中，该配置信息具体用于对目标中继UE进行中继配置，配置信息可以包括以下一种或多种：
中继操作相关的配置；
中继传输的配置参数；
待切换UE的本地标识ID；
待切换UE的层2(Layer 2，L2)ID；
Uu链路的中继无线链路(Radio Link，RL)信道配置；
PC5链路的中继RL信道配置；
Uu链路的承载映射配置；
PC5链路的承载映射配置。
其中，在本公开的一个实施例之中，上述的中继操作相关的配置和中继传输的配置参数可以为以下一种或多种：
SL-L2RelayUEConfig
IE SL-L2RelayUEConfig用于配置L2U2N中继UE使用的L2U2N中继操作相关的配置，例如SRAP-Config。
以及，中继操作相关的配置和中继传输的配置参数中主要可以包括有需要添加的远端UE(即待切换UE)列表；和/或需要删除的远端UE列表等。其中，远端UE列表中可以包括远端UE的配置信息、远端UE的标识、远端UE的SRAP(Sidelink Relay Adaptation Protocol，侧行链路中继应用协议)配置等的任一种或任多种。
进一步地，在本公开的一个实施例之中，目标节点向目标中继UE发送配置信息的方法可以包括以下一种或多种：
向请求消息中的全部目标中继UE的标识对应的目标中继UE均发送该配置信息；
向请求消息中的部分目标中继UE的标识对应的目标中继UE发送该配置信息；其中，该部分目标中继UE的标识是目标节点基于实现自主确定的，以及，该部分目标中继UE的标识包括至少一个目标中继UE的标识；
基于实现自主确定一个或多个目标中继UE，并向自主确定的目标中继UE发送该配置信息。其中，目标节点基于实现自主确定的该一个或多个目标中继UE可以是请求消息中包含的目标中继UE的标识对应的目标中继UE，也可以不是请求消息中包含的目标中继UE的标识对应的目标中继UE。
再进一步地，在本公开的一个实施例之中，目标节点向目标中继UE发送配置信息的方法可以包括：
确定目标中继UE的连接状态，并且响应于该目标中继UE处于连接态，则可以直接向该目标中继UE发送配置信息；和/或，响应于目标中继UE处于非连接态(如空闲态或者非激活态)，则需要先与目标中继UE建立RRC(Radio Resource Control，是指无线资源控制)连接(如目标节点可以通过向目标中继UE发送RRC建立消息和/RRC恢复消息来与目标中继UE建立RRC连接)，再向目标中继UE发送配置信息。
其中，在本公开的一个实施例之中，目标节点可以通过信令来确定目标中继UE的连接状态。具体的，若目标节点在当前时刻之前向目标中继UE发送了RRC连接释放消息，且发送了RRC连接释放消息之后，未收到目标中继UE发送的RRC恢复完成消息和/或RRC建立完成消息，则确定该目标中继UE处于非连接态。若目标节点在当前时刻之前收到目标中继UE发送的RRC恢复完成消息和/或RRC建立完成消息，且收到RRC恢复完成消息和/或RRC建立完成消息之后，目标节点未向目标中继UE发送RRC连接释放消息，则确定该目标中继UE处于连接态。
以及，在本公开的一个实施例之中，目标节点可以将上述的配置信息携带于RRC重配信息中发送至目标中继UE。
综上所述，在本公开实施例提供的路径切换方法之中，目标节点会接收源节点发送的请求消息，该请求消息用于请求目标节点进行路径切换准备；以及，目标节点还会向目标中继UE发送配置信息。由此可知，本公开实施例在路径切换流程中涉及到了目标节点对中继UE进行中继配置的步骤，从而本公开的方法可以应用到涉及有基站间切换(inter-gNB)的路径切换场景中，以使得涉及基站间切换(inter-gNB)的路径切换流程能够成功执行，确保待切换UE的业务连续性，避免待切换UE由于中继UE未配置导致的路径切换失败，或者路径切换时延。
图2b为本公开实施例所提供的一种路径切换方法的流程示意图，该方法由目标节点执行，如图2b所示，该路径切换方法可以包括以下步骤：
步骤201b、接收源节点发送的请求消息，该请求消息用于请求目标节点为待切换UE进行路径切换准备。
步骤202b、向目标中继UE发送配置信息。
其中，关于步骤201b-202b的详细介绍可以参考上述实施例描述。
步骤203b、接收目标中继UE发送的第一指示信息，该第一指示信息用于指示目标中继UE是否成功基于该配置信息完成中继配置。
其中，在本公开的一个实施例之中，指示目标中继UE成功基于该配置信息完成中继配置的第一指示信息可以为RRC重配完成消息，指示目标中继UE未成功基于该配置信息完成中继配置的第一指示信息可以为RRC重建请求消息。
步骤204b、向源节点发送回复消息。
其中，在本公开的一个实施例之中，该回复消息可以包括指示源节点请求成功的确认消息和/或指示源节点请求失败的失败消息。该确认消息可以为切换请求确认(HANDOVER REQUEST ACKNOWLEDGE)消息，该失败消息可以为切换准备失败(HANDOVER PREPARATION FAILURE)消息。
需要说明的是，在本公开的一个实施例之中，目标节点向源节点发送回复消息的方法可以包括以下任一种或多种：
方法一、响应于目标节点接收到源节点发送的请求消息，目标节点不向中继UE发送配置信息而自主确定是否接收该请求消息所请求的路径切换，并基于自主确定结果向源节点发送回复消息。
具体的，响应于目标节点接收到源节点发送的请求消息后自主确定通过直接链路连接待切换UE(即待切换UE直接连接至目标节点，而不通过中继UE连接)，向所述源节点发送所述确认消息；
响应于目标节点接收到源节点发送的请求消息后自主确定拒绝源节点请求的路径切换(即待切换UE通过中继UE连接至目标节点)，向源节点发送失败消息。
方法二、响应于目标节点接收到源节点发送的请求消息，目标节点向中继UE发送配置信息来对目标中继UE进行中继配置，并基于中继配置结果向源节点发送回复消息。
具体的，在本公开的一个实施例之中，可以设置一个定时器，响应于目标节点接收到源节点发送的请求消息，或，响应于目标节点向目标中继UE发送了配置信息，启动定时器；和/或；
响应于目标节点接收到一个或多个目标中继UE发送的第一指示信息，或，响应于目标节点向源节点发送了回复消息，停止定时器。
在本公开的另一个实施例之中，也可以设置多个定时器，其中，可以为每个发送了配置信息的目标中继UE设置一个定时器，其中，当向此目标中继UE发送配置信息后，则启动此目标中继UE对应的定时器，当接收到此目标中继UE发送的第一指示信息后停止此目标中继UE对应的定时器。
以及，在本公开的一个实施例之中，上述的基于中继配置结果向源节点发送回复消息的方法可以包括以下一种或多种：
响应于目标节点接收到一个或多个目标中继UE发送的指示目标中继UE成功基于配置信息完成中继配置的第一指示信息，则说明目标节点对目标中继UE完成了中继配置，此时可以向源节点发送确认消息；
响应于目标节点收到一个或多个目标中继UE发送的指示目标中继UE未成功基于配置信息完成中 继配置的第一指示信息，但目标节点自主确定通过直接链路连接待切换UE，向源节点发送确认消息；
响应于定时器超时，但目标节点自主确定通过直接链路连接待切换UE，向源节点发送确认消息；
响应于目标节点收到一个或多个目标中继UE发送的指示目标中继UE未成功基于配置信息完成中继配置的第一指示信息，向源节点发送所述失败消息；
响应于定时器超时，向源节点发送所述失败消息。
以及，需要说明的是，在本公开的一个实施例之中，该确认消息中可以包括以下一种或多种：
第二指示信息，用于指示目标节点允许切换的连接路径；该目标节点允许切换的连接路径可以为直接链路或间接链路。
成功完成中继配置的目标中继UE的标识。
进一步地，在本公开的一个实施例之中，该失败消息中可以包括以下一种或多种：
第三指示信息，用于指示目标节点切换失败的连接路径；
未成功完成中继配置的目标中继UE的标识。
此外，在本公开的一个实施例之中，当源节点接收到目标节点发送的回复消息之后，可以基于回复消息中携带的内容向待切换UE发送携带路径切换配置的配置消息，以便待切换UE可以基于该配置消息完成路径切换。其中，该配置消息可以包括目标节点允许切换的连接路径和/或成功完成中继配置的目标中继UE的标识。
综上所述，在本公开实施例提供的路径切换方法之中，目标节点会接收源节点发送的请求消息，该请求消息用于请求目标节点进行路径切换准备；以及，目标节点还会向目标中继UE发送配置信息；并会接收目标中继UE发送的第一指示信息，该第一指示信息用于指示目标中继UE是否成功基于配置信息完成中继配置；此外，目标节点还会向源节点发送回复消息。由此可知，本公开实施例在路径切换流程中涉及到了目标节点对中继UE进行中继配置的步骤，从而本公开的方法可以应用到涉及有基站间切换(inter-gNB)的路径切换场景中，以使得涉及基站间切换(inter-gNB)的路径切换流程能够成功执行，确保待切换UE的业务连续性，避免待切换UE由于中继UE未配置导致的路径切换失败，或者路径切换时延。
图2c为本公开实施例所提供的一种路径切换方法的流程示意图，该方法由目标节点执行，如图2c所示，该路径切换方法可以包括以下步骤：
步骤201c、接收源节点发送的请求消息，该请求消息用于请求目标节点为待切换UE进行路径切换准备。
步骤202c、响应于目标节点接收到源节点发送的请求消息后自主确定通过直接链路连接待切换UE，向源节点发送所述确认消息。
其中，关于步骤201c-202c的详细介绍可以参考上述实施例描述。
综上所述，在本公开实施例提供的路径切换方法之中，目标节点会接收源节点发送的请求消息，该请求消息用于请求目标节点进行路径切换准备；以及，目标节点还会向目标中继UE发送配置信息；并会接收目标中继UE发送的第一指示信息，该第一指示信息用于指示目标中继UE是否成功基于配置信息完成中继配置；此外，目标节点还会向源节点发送回复消息。由此可知，本公开实施例在路径切换流程中涉及到了目标节点对中继UE进行中继配置的步骤，从而本公开的方法可以应用到涉及有基站间切换(inter-gNB)的路径切换场景中，以使得涉及基站间切换(inter-gNB)的路径切换流程能够成功执行，确保待切换UE的业务连续性，避免待切换UE由于中继UE未配置导致的路径切换失败，或者路径切换时延。
图2d为本公开实施例所提供的一种路径切换方法的流程示意图，该方法由目标节点执行，如图2d所示，该路径切换方法可以包括以下步骤：
步骤201d、接收源节点发送的请求消息，该请求消息用于请求目标节点为待切换UE进行路径切换准备。
步骤202d、响应于所述目标节点接收到源节点发送的请求消息后自主确定拒绝所述源节点请求的路径切换，向所述源节点发送所述失败消息。
其中，关于步骤201d-202d的详细介绍可以参考上述实施例描述。
综上所述，在本公开实施例提供的路径切换方法之中，目标节点会接收源节点发送的请求消息，该请求消息用于请求目标节点进行路径切换准备；以及，目标节点还会向目标中继UE发送配置信息；并会接收目标中继UE发送的第一指示信息，该第一指示信息用于指示目标中继UE是否成功基于配置信息完成中继配置；此外，目标节点还会向源节点发送回复消息。由此可知，本公开实施例在路径切换流程中涉及到了目标节点对中继UE进行中继配置的步骤，从而本公开的方法可以应用到涉及有基站间切换(inter-gNB)的路径切换场景中，以使得涉及基站间切换(inter-gNB)的路径切换流程能够成功执行，确保待切换UE的业务连续性，避免待切换UE由于中继UE未配置导致的路径切换失败，或者路径切换时延。
进一步地，在本公开的一个实施例中，可以定义一个定时器，并定义该定时器的启动时刻和停止时刻，以用于目标节点基于该定时器来确定何时向源节点发送确认消息，何时向源节点发送失败消息。其中，后续图2e-2j为与定时器相关的实施例。
图2e为本公开实施例所提供的一种路径切换方法的流程示意图，该方法由目标节点执行，如图2e所示，该路径切换方法可以包括以下步骤：
步骤201e、响应于目标节点接收到源节点发送的请求消息，或，响应于目标节点向目标中继UE发送了配置信息，启动定时器。
综上所述，在本公开实施例提供的路径切换方法之中，目标节点会接收源节点发送的请求消息，该请求消息用于请求目标节点进行路径切换准备；以及，目标节点还会向目标中继UE发送配置信息。由此可知，本公开实施例在路径切换流程中涉及到了目标节点对中继UE进行中继配置的步骤，从而本公开的方法可以应用到涉及有基站间切换(inter-gNB)的路径切换场景中，以使得涉及基站间切换(inter-gNB)的路径切换流程能够成功执行，确保待切换UE的业务连续性，避免待切换UE由于中继UE未配置导致的路径切换失败，或者路径切换时延。
图2f为本公开实施例所提供的一种路径切换方法的流程示意图，该方法由目标节点执行，如图2f所示，该路径切换方法可以包括以下步骤：
步骤201f、响应于目标节点接收到一个或多个目标中继UE发送的第一指示信息，或，响应于目标节点向源节点发送了回复消息，停止定时器。
综上所述，在本公开实施例提供的路径切换方法之中，目标节点会接收源节点发送的请求消息，该请求消息用于请求目标节点进行路径切换准备；以及，目标节点还会向目标中继UE发送配置信息。由此可知，本公开实施例在路径切换流程中涉及到了目标节点对中继UE进行中继配置的步骤，从而本公开的方法可以应用到涉及有基站间切换(inter-gNB)的路径切换场景中，以使得涉及基站间切换(inter-gNB)的路径切换流程能够成功执行，确保待切换UE的业务连续性，避免待切换UE由于中继UE未配置导致的路径切换失败，或者路径切换时延。
图2g为本公开实施例所提供的一种路径切换方法的流程示意图，该方法由目标节点执行，如图2g所示，该路径切换方法可以包括以下步骤：
步骤201g、响应于定时器超时，但目标节点自主确定通过直接链路连接待切换UE，向源节点发送确认消息。
综上所述，在本公开实施例提供的路径切换方法之中，目标节点会接收源节点发送的请求消息，该请求消息用于请求目标节点进行路径切换准备；以及，目标节点还会向目标中继UE发送配置信息。由此可知，本公开实施例在路径切换流程中涉及到了目标节点对中继UE进行中继配置的步骤，从而本公开的方法可以应用到涉及有基站间切换(inter-gNB)的路径切换场景中，以使得涉及基站间切换(inter-gNB)的路径切换流程能够成功执行，确保待切换UE的业务连续性，避免待切换UE由于中继UE未配置导致的路径切换失败，或者路径切换时延。
图2h为本公开实施例所提供的一种路径切换方法的流程示意图，该方法由目标节点执行，如图2h所示，该路径切换方法可以包括以下步骤：
步骤201h、响应于定时器超时，向源节点发送所述失败消息。
综上所述，在本公开实施例提供的路径切换方法之中，目标节点会接收源节点发送的请求消息，该请求消息用于请求目标节点进行路径切换准备；以及，目标节点还会向目标中继UE发送配置信息。由此可知，本公开实施例在路径切换流程中涉及到了目标节点对中继UE进行中继配置的步骤，从而本公开的方法可以应用到涉及有基站间切换(inter-gNB)的路径切换场景中，以使得涉及基站间切换(inter-gNB)的路径切换流程能够成功执行，确保待切换UE的业务连续性，避免待切换UE由于中继UE未配置导致的路径切换失败，或者路径切换时延。
图2i为本公开实施例所提供的一种路径切换方法的流程示意图，该方法由目标节点执行，如图2i所示，该路径切换方法可以包括以下步骤：
步骤201i、若为每个发送了配置信息的目标中继UE均定义一个定时器，当向目标中继UE发送配置信息后，则启动此目标中继UE对应的定时器。
综上所述，在本公开实施例提供的路径切换方法之中，目标节点会接收源节点发送的请求消息，该请求消息用于请求目标节点进行路径切换准备；以及，目标节点还会向目标中继UE发送配置信息。由此可知，本公开实施例在路径切换流程中涉及到了目标节点对中继UE进行中继配置的步骤，从而本公开的方法可以应用到涉及有基站间切换(inter-gNB)的路径切换场景中，以使得涉及基站间切换(inter-gNB)的路径切换流程能够成功执行，确保待切换UE的业务连续性，避免待切换UE由于中继UE未配置导致的路径切换失败，或者路径切换时延。
图2j为本公开实施例所提供的一种路径切换方法的流程示意图，该方法由目标节点执行，如图2j所示，该路径切换方法可以包括以下步骤：
步骤201j、若为每个发送了配置信息的目标中继UE均定义一个定时器，当接收到某目标中继UE发送的第一指示信息后停止此目标中继UE对应的定时器。
综上所述，在本公开实施例提供的路径切换方法之中，目标节点会接收源节点发送的请求消息，该请求消息用于请求目标节点进行路径切换准备；以及，目标节点还会向目标中继UE发送配置信息。由此可知，本公开实施例在路径切换流程中涉及到了目标节点对中继UE进行中继配置的步骤，从而本公开的方法可以应用到涉及有基站间切换(inter-gNB)的路径切换场景中，以使得涉及基站间切换(inter-gNB)的路径切换流程能够成功执行，确保待切换UE的业务连续性，避免待切换UE由于中继UE未配置导致的路径切换失败，或者路径切换时延。
图3为本公开实施例所提供的一种路径切换方法的流程示意图，该方法由目标节点执行，如图3所示，该路径切换方法可以包括以下步骤：
步骤301、接收源节点发送的请求消息，该请求消息用于请求目标节点为待切换UE进行路径切换准备。
其中，关于步骤301的详细介绍可以参考上述实施例描述。
综上所述，在本公开实施例提供的路径切换方法之中，目标节点会接收源节点发送的请求消息，该请求消息用于请求目标节点进行路径切换准备；以及，目标节点还会向目标中继UE发送配置信息。由此可知，本公开实施例在路径切换流程中涉及到了目标节点对中继UE进行中继配置的步骤，从而本公开的方法可以应用到涉及有基站间切换(inter-gNB)的路径切换场景中，以使得涉及基站间切换(inter-gNB)的路径切换流程能够成功执行，确保待切换UE的业务连续性，避免待切换UE由于中继UE未配置导致的路径切换失败，或者路径切换时延。
图4为本公开实施例所提供的一种路径切换方法的流程示意图，该方法由目标节点执行，如图3所示，该路径切换方法可以包括以下步骤：
步骤401、向目标中继UE发送配置信息。
其中，关于步骤401的详细介绍可以参考上述实施例描述。
综上所述，在本公开实施例提供的路径切换方法之中，目标节点会接收源节点发送的请求消息，该请求消息用于请求目标节点进行路径切换准备；以及，目标节点还会向目标中继UE发送配置信息。由此可知，本公开实施例在路径切换流程中涉及到了目标节点对中继UE进行中继配置的步骤，从而本公开的方法可以应用到涉及有基站间切换(inter-gNB)的路径切换场景中，以使得涉及基站间切换 (inter-gNB)的路径切换流程能够成功执行，确保待切换UE的业务连续性，避免待切换UE由于中继UE未配置导致的路径切换失败，或者路径切换时延。
图5为本公开实施例所提供的一种路径切换方法的流程示意图，该方法由目标节点执行，如图3所示，该路径切换方法可以包括以下步骤：
步骤501、接收目标中继UE发送的第一指示信息，第一指示信息用于指示目标中继UE是否成功基于所述配置信息完成中继配置。
其中，关于步骤501的详细介绍可以参考上述实施例描述。
综上所述，在本公开实施例提供的路径切换方法之中，目标节点会接收源节点发送的请求消息，该请求消息用于请求目标节点进行路径切换准备；以及，目标节点还会向目标中继UE发送配置信息。由此可知，本公开实施例在路径切换流程中涉及到了目标节点对中继UE进行中继配置的步骤，从而本公开的方法可以应用到涉及有基站间切换(inter-gNB)的路径切换场景中，以使得涉及基站间切换(inter-gNB)的路径切换流程能够成功执行，确保待切换UE的业务连续性，避免待切换UE由于中继UE未配置导致的路径切换失败，或者路径切换时延。
图6为本公开实施例所提供的一种路径切换方法的流程示意图，该方法由目标节点执行，如图3所示，该路径切换方法可以包括以下步骤：
步骤601、向源节点发送回复消息。
其中，关于步骤601的详细介绍可以参考上述实施例描述。
综上所述，在本公开实施例提供的路径切换方法之中，目标节点会接收源节点发送的请求消息，该请求消息用于请求目标节点进行路径切换准备；以及，目标节点还会向目标中继UE发送配置信息。由此可知，本公开实施例在路径切换流程中涉及到了目标节点对中继UE进行中继配置的步骤，从而本公开的方法可以应用到涉及有基站间切换(inter-gNB)的路径切换场景中，以使得涉及基站间切换(inter-gNB)的路径切换流程能够成功执行，确保待切换UE的业务连续性，避免待切换UE由于中继UE未配置导致的路径切换失败，或者路径切换时延。
图7为本公开实施例所提供的一种路径切换方法的流程示意图，该方法由中继UE执行，如图7所示，该路径切换方法可以包括以下步骤：
步骤701、接收目标节点发送的配置信息；和/或，向目标节点发送第一指示信息，第一指示信息用于指示目标中继UE是否成功基于配置信息完成中继配置。
其中，关于步骤701的详细介绍可以参考上述实施例描述。
综上所述，在本公开实施例提供的路径切换方法之中，目标中继UE会接收目标节点发送的配置信息；和/或，目标中继UE会向目标节点发送第一指示信息，该第一指示信息用于指示目标中继UE是否成功基于配置信息完成中继配置。由此可知，本公开实施例在路径切换流程中涉及到了目标节点对中继UE进行中继配置的步骤，从而本公开的方法可以应用到涉及有基站间切换(inter-gNB)的路径切换场景中，以使得涉及基站间切换(inter-gNB)的路径切换流程能够成功执行，确保待切换UE的业务连续性，避免待切换UE由于中继UE未配置导致的路径切换失败，或者路径切换时延。
图8为本公开实施例所提供的一种路径切换方法的流程示意图，该方法由中继UE执行，如图8所示，该路径切换方法可以包括以下步骤：
步骤801、接收目标节点发送的配置信息。
其中，关于步骤801的详细介绍可以参考上述实施例描述。
综上所述，在本公开实施例提供的路径切换方法之中，目标中继UE会接收目标节点发送的配置信息。由此可知，本公开实施例在路径切换流程中涉及到了目标节点对中继UE进行中继配置的步骤，从而本公开的方法可以应用到涉及有基站间切换(inter-gNB)的路径切换场景中，以使得涉及基站间切换(inter-gNB)的路径切换流程能够成功执行，确保待切换UE的业务连续性，避免待切换UE由于中继UE未配置导致的路径切换失败，或者路径切换时延。
图9为本公开实施例所提供的一种路径切换方法的流程示意图，该方法由中继UE执行，如图9所示，该路径切换方法可以包括以下步骤：
步骤901、向目标节点发送第一指示信息，第一指示信息用于指示目标中继UE是否成功基于配置信息完成中继配置。
其中，关于步骤901的详细介绍可以参考上述实施例描述。
综上所述，在本公开实施例提供的路径切换方法之中，目标中继UE会向目标节点发送第一指示信息，该第一指示信息用于指示目标中继UE是否成功基于配置信息完成中继配置。由此可知，本公开实施例在路径切换流程中涉及到了目标节点对中继UE进行中继配置的步骤，从而本公开的方法可以应用到涉及有基站间切换(inter-gNB)的路径切换场景中，以使得涉及基站间切换(inter-gNB)的路径切换流程能够成功执行，确保待切换UE的业务连续性，避免待切换UE由于中继UE未配置导致的路径切换失败，或者路径切换时延。
图10a为本公开实施例所提供的一种路径切换方法的流程示意图，该方法由中继UE执行，如图10a所示，该路径切换方法可以包括以下至少一个步骤：
步骤1001a、接收目标节点发送的配置信息。
步骤1002a、向目标节点发送第一指示信息，第一指示信息用于指示目标中继UE是否成功基于配置信息完成中继配置。
其中，关于步骤1001a-1002a的详细介绍可以参考上述实施例描述。
综上所述，在本公开实施例提供的路径切换方法之中，目标中继UE会接收目标节点发送的配置信息；之后，目标中继UE会向目标节点发送第一指示信息，该第一指示信息用于指示目标中继UE是否成功基于配置信息完成中继配置。由此可知，本公开实施例在路径切换流程中涉及到了目标节点对中继UE进行中继配置的步骤，从而本公开的方法可以应用到涉及有基站间切换(inter-gNB)的路径切换场景中，以使得涉及基站间切换(inter-gNB)的路径切换流程能够成功执行，确保待切换UE的业务连续性，避免待切换UE由于中继UE未配置导致的路径切换失败，或者路径切换时延。
图10b为本公开实施例所提供的一种路径切换方法的流程示意图，该方法由源节点执行，如图10b所示，该路径切换方法可以包括以下至少一个步骤：
步骤1001b、向目标节点发送请求消息，所述请求消息用于请求目标节点进行路径切换准备。和/或，接收所述目标节点发送的回复消息。
其中，关于步骤1001b的详细介绍可以参考上述实施例描述。
综上所述，在本公开实施例提供的路径切换方法之中，源节点会向目标节点发送请求消息以请求目标节点进行路径切换准备，和/或，源节点会接收目标节点发送的回复消息。由此可知，本公开实施例在路径切换流程中涉及到了目标节点和源节点的交互步骤，从而本公开的方法可以应用到涉及有基站间切换(inter-gNB)的路径切换场景中，以使得涉及基站间切换(inter-gNB)的路径切换流程能够成功执行，确保待切换UE的业务连续性，避免待切换UE由于中继UE未配置导致的路径切换失败，或者路径切换时延。
图10c为本公开实施例所提供的一种路径切换方法的流程示意图，该方法由源节点执行，如图10c所示，该路径切换方法可以包括以下至少一个步骤：
步骤1001c、向目标节点发送请求消息，所述请求消息用于请求目标节点进行路径切换准备。
其中，关于步骤1001c的详细介绍可以参考上述实施例描述。
综上所述，在本公开实施例提供的路径切换方法之中，源节点会向目标节点发送请求消息以请求目标节点进行路径切换准备。由此可知，本公开实施例在路径切换流程中涉及到了目标节点和源节点的交互步骤，从而本公开的方法可以应用到涉及有基站间切换(inter-gNB)的路径切换场景中，以使得涉及基站间切换(inter-gNB)的路径切换流程能够成功执行，确保待切换UE的业务连续性，避免待切换UE由于中继UE未配置导致的路径切换失败，或者路径切换时延。
图10d为本公开实施例所提供的一种路径切换方法的流程示意图，该方法由源节点执行，如图10d所示，该路径切换方法可以包括以下至少一个步骤：
步骤1001d、接收所述目标节点发送的回复消息。
其中，关于步骤1001d的详细介绍可以参考上述实施例描述。
综上所述，在本公开实施例提供的路径切换方法之中，源节点会接收目标节点发送的回复消息。由此可知，本公开实施例在路径切换流程中涉及到了目标节点和源节点的交互步骤，从而本公开的方法可以应用到涉及有基站间切换(inter-gNB)的路径切换场景中，以使得涉及基站间切换(inter-gNB)的路径切换流程能够成功执行，确保待切换UE的业务连续性，避免待切换UE由于中继UE未配置导致的路径切换失败，或者路径切换时延。
图10e为本公开实施例所提供的一种路径切换方法的流程示意图，该方法由源节点执行，如图10e所示，该路径切换方法可以包括以下至少一个步骤：
步骤1001e、向目标节点发送请求消息，所述请求消息用于请求目标节点进行路径切换准备。
步骤1002e、接收所述目标节点发送的回复消息。
其中，关于步骤1001e-1002e的详细介绍可以参考上述实施例描述。
综上所述，在本公开实施例提供的路径切换方法之中，源节点会向目标节点发送请求消息以请求目标节点进行路径切换准备，以及，源节点会接收目标节点发送的回复消息。由此可知，本公开实施例在路径切换流程中涉及到了目标节点和源节点的交互步骤，从而本公开的方法可以应用到涉及有基站间切换(inter-gNB)的路径切换场景中，以使得涉及基站间切换(inter-gNB)的路径切换流程能够成功执行，确保待切换UE的业务连续性，避免待切换UE由于中继UE未配置导致的路径切换失败，或者路径切换时延。
以下对基站间切换(inter-gNB)的路径切换流程中目标节点、源节点、远端UE(即上述的待切换UE)、目标中继UE的详细交互流程进行介绍。其中，图11为本公开实施例所提供的一种路径切换方法的流程示意图，如图11所示，该方法的流程包括以下步骤中的一条或多条：
在一个实施例中，下述各条步骤的执行顺序本专利不做限定，任意组合和执行方式均在本专利的保护范围内
第1步、远端UE与源节点之间进行测量配置和上报。
第2步、源节点确定该远端UE要切换至目标节点。
第3步、源节点向目标节点发送切换请求(HANDOVER REQUEST)消息，该切换请求消息中可以包括有源节点推荐的一个或多个目标中继UE。
第4步、目标节点对目标中继UE配置关于远端UE的RRC重配，即，对目标中继UE进行中继配置。其中，此远端UE为潜在的远端UE。以及，当目标中继UE接收目标节点的RRC重配后，可以根据配置信息(如携带于RRC重配中的配置信息)，进行远端UE配置，并且当配置完成时，向目标节点回复RRC重配完成消息。
第5步、响应于收到了目标中继UE的RRC重配完成消息，和/或响应于为远端UE完成了切换准备，目标节点向源节点发送切换请求确认(Handover Request Acknowledge)消息。
第6步、源节点向远端UE发送携带路径切换配置的RRC重配消息，该RRC重配置消息可以包括目标中继UE的标识和/或配置信息。
第7步、远端UE基于该RRC重配消息与目标中继UE建立PC5连接，实现与目标节点的间接连接。
第8步、远端UE通过中继UE向目标节点发送RRC重配完成消息。
第9步、远端UE通过中继UE与目标节点进行上下行数据交互。
以下为以目标节点侧视角对上述图1-图6的方法进行的可选实现方式的举例介绍，下述任一条实现方式可以单独执行，也可以结合其他实现方式组合执行。
1、目标节点接收源节点发送请求消息
1.1、示例性的，所述请求消息用于请求为路径切换准备资源，示例性的，请求消息可以为切换请求消息(HANDOVER REQUEST)。
2、基于1，收到请求消息后向目标中继UE发送配置信息。
2.1、向1中所述请求消息内包含的全部目标中继UE标识对应的中继UE发送配置信息
2.2、向1中所述请求消息内包含的部分(至少一个)中继UE标识对应的中继UE发送配置信息， 具体向哪些目标中继UE发送配置信息，由目标节点基于实现确定
2.3、由目标节点基于实现确定向哪些可能的(至少一个)目标中继UE发送配置信息。
示例性的，所述中继UE可以为U2N中继UE或者U2U中继UE。
示例性的，所述源节点和目标节点可以为gNB
3、基于1-2任一，所述配置信息中包括中继操作相关的配置。
3.1、示例性的，所述中继传输是为1中所述进行路径切换的远端的UE所提供的。为了远端UE能够进行路径切换，切换到与目标节点通过目标中继UE进行连接，目标节点需要向目标中继UE发送所述配置信息。
3.2、示例性的，所述配置信息可以包含远端UE的本地ID和/或L2ID,Uu和PC5中继RL信道配置，承载映射配置中的一种或多种
3.3、示例性的，所述配置信息包括中继操作相关配置。对于其中包含的连接态的远端UE，网络提供用于中继传输的配置参数。
3.4、示例性的，所述配置信息可以为sl-L2RelayUE-Config，可以用IE SL-L2RelayUE-Config-r17表示。
4、基于2，所述配置信息包含于RRC重配信息中。
5、基于2，4任一，所述向目标中继UE发送配置信息包括：
5.1、响应于目标中继UE为连接态UE，目标节点向目标中继UE发送包含此配置信息的RRC重配消息，用于中继UE配置。
5.2、响应于目标中继UE为空闲态或者非激活态UE，目标节点向目标中继UE发送RRC建立消息，为目标中继UE建立RRC连接，然后再向目标中继UE发送配置信息，进行中继UE配置。
6、基于1，响应于收到源节点发送的请求消息，目标节点发送回复消息给源节点，所述回复消息包括：
6.1、所述回复消息可以为确认消息(应答消息)告知源节点目标节点为路径切换准备的资源或失败消息(拒绝消息)
6.1.1、示例性的，所述应答消息(确认消息)可以为切换请求确认(HANDOVER REQUEST ACKNOWLEDGE)消息。
6.2、所述回复消息可以为失败消息(拒绝消息)告知源节点路径切换准备失败或者拒绝所述路径切换
6.2.1、示例性的，所述失败消息(拒绝消息)可以为切换准备失败(HANDOVER PREPARATION FAILURE)消息。
7、基于1，当目标节点接收到源节点发送的请求消息，或者向目标中继UE发送配置信息后，则启动定时器
8、基于7，当定时器超时，发送失败消息给源节点或者目标节点决定采用通过直接链路连接远端UE，则发送确认消息给源节点。
9、基于7，当目标节点收到至少一个(多个/全部)目标中继UE发送的指示配置成功或失败的消息或者发送了6中所述的回复消息，则停止定时器
9.1、示例性的，可以为每个发送了配置信息的中继UE设置一个定时器，当向此目标中继UE发送配置信息后，则启动此定时器，当接收到此中继UE发送的指示配置成功或失败的消息后停止此定时器。
9.2、示例性的，可以只设置一个定时器，当目标节点接收到源节点发送的请求消息后，则启动此定时器，当接收到至少一个(多个/全部)中继UE发送的指示配置成功或失败的消息后停止此定时器。
10、基于6，目标节点发送确认消息给源节点，包括以下一种或多种：
10.1、目标节点收到至少一个(多个/全部)目标中继UE发送的指示配置成功的消息，则发送确认消息给源节点。示例性的，所述指示配置成功的消息可以为RRC重配完成消息
10.2、或者，目标节点决定采用通过直接链路连接远端UE，则发送确认消息给源节点。
其中，所述目标中继UE为在2中向其发送了配置信息的目标中继UE。
示例性的，所述确认消息中可以包含直接连接或间接连接的指示，也可以包含目标中继UE标识。
11、基于6，目标节点发送失败消息给源节点，包括以下一种或多种：
11.1、目标节点收到至少一个(多个/全部)目标中继UE发送的指示配置失败的消息，则发送失败消息给源节点。示例性的，所述指示配置失败的消息可以为RRC重建请求消息。
11.2、响应于定时器超时，发送失败消息给源节点。
其中，所述目标中继UE为在2中向其发送了配置信息的目标中继UE。
示例性的，所述失败消息中可以包含直接连接或间接连接失败的指示，也可以包含配置失败的目标中继UE标识。
12、当源节点收到目标节点发送的确认消息后，源节点发送携带路径切换配置的配置消息给远端UE。
图12为本公开实施例所提供的一种通信装置的结构示意图，如图12所示，装置可以包括：
收发模块，用于接收源节点发送的请求消息，所述请求消息用于请求目标节点进行路径切换准备；
收发模块，还用于向目标中继UE发送配置信息。
综上所述，在本公开实施例提供的通信装置之中，目标节点会接收源节点发送的请求消息，该请求消息用于请求目标节点进行路径切换准备；以及，目标节点还会向目标中继UE发送配置信息。由此可知，本公开实施例在路径切换流程中涉及到了目标节点对中继UE进行中继配置的步骤，从而本公开的方法可以应用到涉及有基站间切换(inter-gNB)的路径切换场景中，以使得涉及基站间切换(inter-gNB)的路径切换流程能够成功执行，确保待切换UE的业务连续性，避免待切换UE由于中继UE未配置导致的路径切换失败，或者路径切换时延。
可选的，在本公开的一个实施例之中，所述收发模块还用于：
接收所述目标中继UE发送的第一指示信息，所述第一指示信息用于指示所述目标中继UE是否成功基于所述配置信息完成中继配置；
向所述源节点发送回复消息。
可选的，在本公开的一个实施例之中，所述配置信息包括以下中的至少一项：
中继操作相关的配置；
中继传输的配置参数；
待切换用户设备UE的本地标识ID；
待切换UE的层2L2ID；
Uu链路的中继无线链路RL信道配置；
PC5链路的中继RL信道配置；
Uu链路的承载映射配置；
PC5链路的承载映射配置。
可选的，在本公开的一个实施例之中，所述收发模块还用于至少一项：
向所述请求消息中的全部目标中继UE的标识对应的目标中继UE发送所述配置信息；
向所述请求消息中的部分目标中继UE的标识对应的目标中继UE发送所述配置信息；
基于实现自主确定一个或多个目标中继UE，并向自主确定的所述目标中继UE发送所述配置信息。
可选的，在本公开的一个实施例之中，所述收发模块还用于：
确定目标中继UE的连接状态，并且
响应于所述目标中继UE处于连接态，直接向所述目标中继UE发送所述配置信息；和/或
响应于所述目标中继UE处于非连接态，为所述目标中继UE建立无线资源控制RRC连接，并向目标中继UE发送所述配置信息。
可选的，在本公开的一个实施例之中，所述回复消息包括指示所述源节点请求成功的确认消息或指示所述源节点请求失败的失败消息。
可选的，在本公开的一个实施例之中，所述收发模块还用于以下中的至少一项：
响应于所述目标节点接收到源节点发送的请求消息后自主确定通过直接链路连接待切换UE，向所 述源节点发送所述确认消息；
响应于所述目标节点接收到源节点发送的请求消息后自主确定拒绝所述源节点请求的路径切换，向所述源节点发送所述失败消息。
可选的，在本公开的一个实施例之中，所述装置还用于以下中的至少一项：
响应于所述目标节点接收到所述源节点发送的请求消息，或，响应于所述目标节点向目标中继UE发送了配置信息，启动定时器；
响应于所述目标节点接收到一个或多个目标中继UE发送的第一指示信息，或，响应于所述目标节点向所述源节点发送了回复消息，停止定时器。
可选的，在本公开的一个实施例之中，所述收发模块还用于以下中的至少一项：
响应于所述目标节点收到一个或多个目标中继UE发送的指示所述目标中继UE成功基于所述配置信息完成中继配置的第一指示信息，向所述源节点发送所述确认消息；
响应于所述目标节点收到一个或多个目标中继UE发送的指示所述目标中继UE未成功基于所述配置信息完成中继配置的第一指示信息，但所述目标节点自主确定通过直接链路连接待切换UE，向所述源节点发送所述确认消息；
响应于所述定时器超时，但所述目标节点自主确定通过直接链路连接待切换UE，向所述源节点发送所述确认消息；
响应于所述目标节点收到一个或多个目标中继UE发送的指示所述目标中继UE未成功基于所述配置信息完成中继配置的第一指示信息，向所述源节点发送所述失败消息；
响应于所述定时器超时，向所述源节点发送所述失败消息。
可选的，在本公开的一个实施例之中，所述确认消息包括以下中的至少一项：
第二指示信息，用于指示所述目标节点允许切换的连接路径；
成功完成中继配置的目标中继UE的标识。
可选的，在本公开的一个实施例之中，所述失败消息包括以下中的至少一项：
第三指示信息，用于指示所述目标节点切换失败的连接路径；
未成功完成中继配置的目标中继UE的标识。
可选的，在本公开的一个实施例之中，所述连接路径包括以下中的至少一项：
直接链路；
间接链路。
图13a为本公开实施例所提供的一种通信装置的结构示意图，如图13a所示，装置可以包括：
收发模块，用于接收目标节点发送的配置信息
向所述目标节点发送第一指示信息，所述第一指示信息用于指示所述目标中继UE是否成功基于所述配置信息完成中继配置。
综上所述，在本公开实施例提供的通信装置之中，目标中继UE会接收目标节点发送的配置信息；和/或，目标中继UE会向目标节点发送第一指示信息，该第一指示信息用于指示目标中继UE是否成功基于配置信息完成中继配置。由此可知，本公开实施例在路径切换流程中涉及到了目标节点对中继UE进行中继配置的步骤，从而本公开的方法可以应用到涉及有基站间切换(inter-gNB)的路径切换场景中，以使得涉及基站间切换(inter-gNB)的路径切换流程能够成功执行，确保待切换UE的业务连续性，避免待切换UE由于中继UE未配置导致的路径切换失败，或者路径切换时延。
可选的，在本公开的一个实施例之中，所述配置信息包括以下中的至少一项：
中继操作相关的配置；
中继传输的配置参数；
待切换UE的本地ID；
待切换UE的L2ID；
Uu链路的中继RL信道配置；
PC5链路的中继RL信道配置；
Uu链路的承载映射配置；
PC5链路的承载映射配置。
可选的，在本公开的一个实施例之中，所述收发模块还用于：
响应于所述中继UE处于连接态，直接接收所述目标节点发送的所述配置信息；
响应于所述中继UE处于非连接态，与所述目标节点建立RRC连接，并接收所述目标节点发送的所述配置信息。
图13b为本公开实施例所提供的一种通信装置的结构示意图，如图13b所示，装置可以包括：
收发模块，用于向目标节点发送请求消息，所述请求消息用于请求目标节点进行路径切换准备。
综上所述，在本公开实施例提供的通信装置之中，源节点会向目标节点发送请求消息以请求目标节点进行路径切换准备，和/或，源节点会接收目标节点发送的回复消息。由此可知，本公开实施例在路径切换流程中涉及到了目标节点和源节点的交互步骤，从而本公开的方法可以应用到涉及有基站间切换(inter-gNB)的路径切换场景中，以使得涉及基站间切换(inter-gNB)的路径切换流程能够成功执行，确保待切换UE的业务连续性，避免待切换UE由于中继UE未配置导致的路径切换失败，或者路径切换时延。
可选的，在本公开的一个实施例之中，所述装置还用于：接收所述目标节点发送的回复消息。
可选的，在本公开的一个实施例之中，所述请求消息中包括一个或多个目标中继UE的标识。
可选的，在本公开的一个实施例之中，所述回复消息包括指示所述源节点请求成功的确认消息或指示所述源节点请求失败的失败消息。
可选的，在本公开的一个实施例之中，所述确认消息包括以下中的至少一项：
第二指示信息，用于指示所述目标节点允许切换的连接路径；
成功完成中继配置的目标中继UE的标识。
可选的，在本公开的一个实施例之中，所述失败消息包括以下中的至少一项：
第三指示信息，用于指示所述目标节点切换失败的连接路径；
未成功完成中继配置的目标中继UE的标识。
可选的，在本公开的一个实施例之中，所述连接路径包括以下中的至少一项：
直接链路；
间接链路。
请参见图14，图14是本申请实施例提供的一种通信装置1400的结构示意图。通信装置1400可以是网络设备，也可以是终端设备，也可以是支持网络设备实现上述方法的芯片、芯片系统、或处理器等，还可以是支持终端设备实现上述方法的芯片、芯片系统、或处理器等。该装置可用于实现上述方法实施例中描述的方法，具体可以参见上述方法实施例中的说明。
通信装置1400可以包括一个或多个处理器1401。处理器1401可以是通用处理器或者专用处理器等。例如可以是基带处理器或中央处理器。基带处理器可以用于对通信协议以及通信数据进行处理，中央处理器可以用于对通信装置(如，基站、基带芯片，终端设备、终端设备芯片，DU或CU等)进行控制，执行计算机程序，处理计算机程序的数据。
可选的，通信装置1400中还可以包括一个或多个存储器1402，其上可以存有计算机程序1404，处理器1401执行所述计算机程序1404，以使得通信装置1400执行上述方法实施例中描述的方法。可选的，所述存储器1402中还可以存储有数据。通信装置1400和存储器1402可以单独设置，也可以集成在一起。
可选的，通信装置1400还可以包括收发器1405、天线1406。收发器1405可以称为收发单元、收发机、或收发电路等，用于实现收发功能。收发器1405可以包括接收器和发送器，接收器可以称为接收机或接收电路等，用于实现接收功能；发送器可以称为发送机或发送电路等，用于实现发送功能。
可选的，通信装置1400中还可以包括一个或多个接口电路1407。接口电路1407用于接收代码指令并传输至处理器1401。处理器1401运行所述代码指令以使通信装置1400执行上述方法实施例中描述的方法。
在一种实现方式中，处理器1401中可以包括用于实现接收和发送功能的收发器。例如该收发器可以是收发电路，或者是接口，或者是接口电路。用于实现接收和发送功能的收发电路、接口或接口电路可以是分开的，也可以集成在一起。上述收发电路、接口或接口电路可以用于代码/数据的读写，或者，上述收发电路、接口或接口电路可以用于信号的传输或传递。
在一种实现方式中，处理器1401可以存有计算机程序1403，计算机程序1403在处理器1401上运行，可使得通信装置1400执行上述方法实施例中描述的方法。计算机程序1403可能固化在处理器1401中，该种情况下，处理器1401可能由硬件实现。
在一种实现方式中，通信装置1400可以包括电路，所述电路可以实现前述方法实施例中发送或接收或者通信的功能。本申请中描述的处理器和收发器可实现在集成电路(integrated circuit，IC)、模拟IC、射频集成电路RFIC、混合信号IC、专用集成电路(application specific integrated circuit，ASIC)、印刷电路板(printed circuit board，PCB)、电子设备等上。该处理器和收发器也可以用各种IC工艺技术来制造，例如互补金属氧化物半导体(complementary metal oxide semiconductor，CMOS)、N型金属氧化物半导体(nMetal-oxide-semiconductor，NMOS)、P型金属氧化物半导体(positive channel metal oxide semiconductor，PMOS)、双极结型晶体管(bipolar junction transistor，BJT)、双极CMOS(BiCMOS)、硅锗(SiGe)、砷化镓(GaAs)等。
以上实施例描述中的通信装置可以是网络设备或者终端设备，但本申请中描述的通信装置的范围并不限于此，而且通信装置的结构可以不受图14的限制。通信装置可以是独立的设备或者可以是较大设备的一部分。例如所述通信装置可以是：
(1)独立的集成电路IC，或芯片，或，芯片系统或子系统；
(2)具有一个或多个IC的集合，可选的，该IC集合也可以包括用于存储数据，计算机程序的存储部件；
(3)ASIC，例如调制解调器(Modem)；
(4)可嵌入在其他设备内的模块；
(5)接收机、终端设备、智能终端设备、蜂窝电话、无线设备、手持机、移动单元、车载设备、网络设备、云设备、人工智能设备等等；
(6)其他等等。
对于通信装置可以是芯片或芯片系统的情况，可参见图15所示的芯片的结构示意图。图15所示的芯片包括处理器1501和接口1502。其中，处理器1501的数量可以是一个或多个，接口1502的数量可以是多个。
可选的，芯片还包括存储器1503，存储器1503用于存储必要的计算机程序和数据。
本领域技术人员还可以了解到本申请实施例列出的各种说明性逻辑块(illustrative logical block)和步骤(step)可以通过电子硬件、电脑软件，或两者的结合进行实现。这样的功能是通过硬件还是软件来实现取决于特定的应用和整个系统的设计要求。本领域技术人员可以对于每种特定的应用，可以使用各种方法实现所述的功能，但这种实现不应被理解为超出本申请实施例保护的范围。
本申请还提供一种可读存储介质，其上存储有指令，该指令被计算机执行时实现上述任一方法实施例的功能。
本申请还提供一种计算机程序产品，该计算机程序产品被计算机执行时实现上述任一方法实施例的功能。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机程序。在计算机上加载和执行所述计算机程序时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机程序可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机程序可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站 点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，高密度数字视频光盘(digital video disc，DVD))、或者半导体介质(例如，固态硬盘(solid state disk，SSD))等。
本领域普通技术人员可以理解：本申请中涉及的第一、第二等各种数字编号仅为描述方便进行的区分，并不用来限制本申请实施例的范围，也表示先后顺序。
本申请中的至少一个还可以描述为一个或多个，多个可以是两个、三个、四个或者更多个，本申请不做限制。在本申请实施例中，对于一种技术特征，通过“第一”、“第二”、“第三”、“A”、“B”、“C”和“D”等区分该种技术特征中的技术特征，该“第一”、“第二”、“第三”、“A”、“B”、“C”和“D”描述的技术特征间无先后顺序或者大小顺序。
本申请中各表所示的对应关系可以被配置，也可以是预定义的。各表中的信息的取值仅仅是举例，可以配置为其他值，本申请并不限定。在配置信息与各参数的对应关系时，并不一定要求必须配置各表中示意出的所有对应关系。例如，本申请中的表格中，某些行示出的对应关系也可以不配置。又例如，可以基于上述表格做适当的变形调整，例如，拆分，合并等等。上述各表中标题示出参数的名称也可以采用通信装置可理解的其他名称，其参数的取值或表示方式也可以通信装置可理解的其他取值或表示方式。上述各表在实现时，也可以采用其他的数据结构，例如可以采用数组、队列、容器、栈、线性表、指针、链表、树、图、结构体、类、堆、散列表或哈希表等。
本申请中的预定义可以理解为定义、预先定义、存储、预存储、预协商、预配置、固化、或预烧制。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (29)

  1. 一种路径切换方法，所述方法由目标节点执行，其特征在于，所述方法包括：
    接收源节点发送的请求消息，所述请求消息用于请求目标节点进行路径切换准备；
    向目标中继UE发送配置信息。
  2. 根据权利要求1所述的路径切换方法，其特征在于，所述方法还包括：
    接收所述目标中继UE发送的第一指示信息，所述第一指示信息用于指示所述目标中继UE是否成功基于所述配置信息完成中继配置；
    向所述源节点发送回复消息。
  3. 如权利要求2所述的路径切换方法，其特征在于，所述请求消息中包括一个或多个目标中继UE的标识。
  4. 如权利要求2所述的路径切换方法，其特征在于，所述配置信息包括以下中的至少一项：
    中继操作相关的配置；
    中继传输的配置参数；
    待切换用户设备UE的本地标识ID；
    待切换UE的层2L2 ID；
    Uu链路的中继无线链路RL信道配置；
    PC5链路的中继RL信道配置；
    Uu链路的承载映射配置；
    PC5链路的承载映射配置。
  5. 如权利要求3所述的路径切换方法，其特征在于，所述向目标中继UE发送配置信息，包括以下中的至少一项：
    向所述请求消息中的全部目标中继UE的标识对应的目标中继UE发送所述配置信息；
    向所述请求消息中的部分目标中继UE的标识对应的目标中继UE发送所述配置信息；
    基于实现自主确定一个或多个目标中继UE，并向自主确定的所述目标中继UE发送所述配置信息。
  6. 如权利要求1所述的路径切换方法，其特征在于，所述向目标中继UE发送配置信息，包括：
    确定目标中继UE的连接状态，并且
    响应于所述目标中继UE处于连接态，直接向所述目标中继UE发送所述配置信息；和/或
    响应于所述目标中继UE处于非连接态，为所述目标中继UE建立无线资源控制RRC连接，并向目标中继UE发送所述配置信息。
  7. 如权利要求3所述的路径切换方法，其特征在于，所述回复消息包括指示所述源节点请求成功的确认消息或指示所述源节点请求失败的失败消息。
  8. 如权利要求7所述的路径切换方法，其特征在于，所述向所述源节点发送回复消息，包括以下中的至少一项：
    响应于所述目标节点接收到源节点发送的请求消息后自主确定通过直接链路连接待切换UE，向所述源节点发送所述确认消息；
    响应于所述目标节点接收到源节点发送的请求消息后自主确定拒绝所述源节点请求的路径切换，向所述源节点发送所述失败消息。
  9. 如权利要求7所述的路径切换方法，其特征在于，所述方法还包括以下中的至少一项：
    响应于所述目标节点接收到所述源节点发送的请求消息，或，响应于所述目标节点向目标中继UE发送了配置信息，启动定时器；
    响应于所述目标节点接收到一个或多个目标中继UE发送的第一指示信息，或，响应于所述目标节点向所述源节点发送了回复消息，停止定时器。
  10. 如权利要求9所述的路径切换方法，其特征在于，所述向所述源节点发送回复消息，包括以下中的至少一项：
    响应于所述目标节点收到一个或多个目标中继UE发送的指示所述目标中继UE成功基于所述配置 信息完成中继配置的第一指示信息，向所述源节点发送所述确认消息；
    响应于所述目标节点收到一个或多个目标中继UE发送的指示所述目标中继UE未成功基于所述配置信息完成中继配置的第一指示信息，但所述目标节点自主确定通过直接链路连接待切换UE，向所述源节点发送所述确认消息；
    响应于所述定时器超时，但所述目标节点自主确定通过直接链路连接待切换UE，向所述源节点发送所述确认消息；
    响应于所述目标节点收到一个或多个目标中继UE发送的指示所述目标中继UE未成功基于所述配置信息完成中继配置的第一指示信息，向所述源节点发送所述失败消息；
    响应于所述定时器超时，向所述源节点发送所述失败消息。
  11. 如权利要求7所述的路径切换方法，其特征在于，所述确认消息包括以下中的至少一项：
    第二指示信息，用于指示所述目标节点允许切换的连接路径；
    成功完成中继配置的目标中继UE的标识。
  12. 如权利要求7所述的路径切换方法，其特征在于，所述失败消息包括以下中的至少一项：
    第三指示信息，用于指示所述目标节点切换失败的连接路径；
    未成功完成中继配置的目标中继UE的标识。
  13. 如权利要求11或12所述的路径切换方法，其特征在于，所述连接路径包括以下中的至少一项：
    直接链路；
    间接链路。
  14. 一种路径切换方法，所述方法由中继UE执行，其特征在于，所述方法包括：
    接收目标节点发送的配置信息；
    向所述目标节点发送第一指示信息，所述第一指示信息用于指示所述目标中继UE是否成功基于所述配置信息完成中继配置。
  15. 如权利要求14所述的路径切换方法，其特征在于，所述配置信息包括以下中的至少一项：
    中继操作相关的配置；
    中继传输的配置参数；
    待切换UE的本地ID；
    待切换UE的L2 ID；
    Uu链路的中继RL信道配置；
    PC5链路的中继RL信道配置；
    Uu链路的承载映射配置；
    PC5链路的承载映射配置。
  16. 如权利要求14所述的路径切换方法，其特征在于，所述接收目标节点发送的配置信息，包括：
    响应于所述中继UE处于连接态，直接接收所述目标节点发送的所述配置信息；
    响应于所述中继UE处于非连接态，与所述目标节点建立RRC连接，并接收所述目标节点发送的所述配置信息。
  17. 一种路径切换方法，其特征在于，所述方法被源节点执行，所述方法包括：
    向目标节点发送请求消息，所述请求消息用于请求目标节点进行路径切换准备。
  18. 如权利要求17所述的方法，其特征在于，所述方法还包括：
    接收所述目标节点发送的回复消息。
  19. 如权利要求17所述的路径切换方法，其特征在于，所述请求消息中包括一个或多个目标中继UE的标识。
  20. 如权利要求18所述的路径切换方法，其特征在于，所述回复消息包括指示所述源节点请求成功的确认消息或指示所述源节点请求失败的失败消息。
  21. 如权利要求17所述的路径切换方法，其特征在于，所述确认消息包括以下中的至少一项：
    第二指示信息，用于指示所述目标节点允许切换的连接路径；
    成功完成中继配置的目标中继UE的标识。
  22. 如权利要求17所述的路径切换方法，其特征在于，所述失败消息包括以下中的至少一项：
    第三指示信息，用于指示所述目标节点切换失败的连接路径；
    未成功完成中继配置的目标中继UE的标识。
  23. 如权利要求21或22所述的路径切换方法，其特征在于，所述连接路径包括以下中的至少一项：
    直接链路；
    间接链路。
  24. 一种通信装置，其特征在于，所述装置被配置于目标节点中，包括：
    收发模块，用于接收源节点发送的请求消息，所述请求消息用于请求目标节点进行路径切换准备；
    所述收发模块，还用于向目标中继UE发送配置信息。
  25. 一种通信装置，其特征在于，所述装置被配置于中继UE中，包括：
    收发模块，用于接收目标节点发送的配置信息；
    向所述目标节点发送第一指示信息，所述第一指示信息用于指示所述目标中继UE是否成功基于所述配置信息完成中继配置。
  26. 一种通信装置，其特征在于，所述装置被配置于源节点中，包括：
    收发模块，用于向目标节点发送请求消息，所述请求消息用于请求目标节点进行路径切换准备。
  27. 一种通信装置，其特征在于，所述装置包括处理器和存储器，其中，所述存储器中存储有计算机程序，所述处理器执行所述存储器中存储的计算机程序，以使所述装置执行如权利要求1至13中任一项所述的方法，或所述处理器执行所述存储器中存储的计算机程序，以使所述装置执行如权利要求14至16所述的方法，或所述处理器执行所述存储器中存储的计算机程序，以使所述装置执行如权利要求17至23所述的方法。
  28. 一种通信装置，其特征在于，包括：处理器和接口电路，其中
    所述接口电路，用于接收代码指令并传输至所述处理器；
    所述处理器，用于运行所述代码指令以执行如权利要求1至13中任一项所述的方法，或用于运行所述代码指令以执行如权利要求14至16所述的方法，或用于运行所述代码指令以执行如权利要求17至23所述的方法。
  29. 一种计算机可读存储介质，用于存储有指令，当所述指令被执行时，使如权利要求1至13中任一项所述的方法被实现，或当所述指令被执行时，使如权利要求14至16所述的方法被实现，或当所述指令被执行时，使如权利要求17至23所述的方法被实现。
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