WO2021129804A1 - 路径选择方法、终端和网络侧设备 - Google Patents

路径选择方法、终端和网络侧设备 Download PDF

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Publication number
WO2021129804A1
WO2021129804A1 PCT/CN2020/139387 CN2020139387W WO2021129804A1 WO 2021129804 A1 WO2021129804 A1 WO 2021129804A1 CN 2020139387 W CN2020139387 W CN 2020139387W WO 2021129804 A1 WO2021129804 A1 WO 2021129804A1
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WIPO (PCT)
Prior art keywords
relay node
transmission
relay
candidate
information
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PCT/CN2020/139387
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English (en)
French (fr)
Inventor
王文
谢振华
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维沃移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 维沃移动通信有限公司 filed Critical 维沃移动通信有限公司
Priority to EP20906676.0A priority Critical patent/EP4084531A4/en
Priority to JP2022533063A priority patent/JP2023507919A/ja
Priority to KR1020227025566A priority patent/KR20220119472A/ko
Publication of WO2021129804A1 publication Critical patent/WO2021129804A1/zh
Priority to US17/847,703 priority patent/US20220322203A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/12—Communication route or path selection, e.g. power-based or shortest path routing based on transmission quality or channel quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user

Definitions

  • the present invention relates to the field of communication technology, in particular to a path selection method, terminal and network side equipment.
  • one or more relay nodes are set between the network side device and the terminal, and the terminal can choose one or more relay nodes for communication and transmission, or the terminal can also choose a direct path for communication transmission.
  • the path selection of the terminal generally depends on the quality of the link, and the relay node with good link quality may be selected by the terminal for transmission.
  • the selected path may not meet service requirements. It can be seen that the existing path selection method has the problem that it cannot meet the business needs.
  • the embodiment of the present invention provides a path selection method, terminal, and network side equipment to solve the problem that the existing path selection method cannot meet service requirements.
  • the present invention is implemented as follows:
  • an embodiment of the present invention provides a path selection method, which is applied to a terminal, and the method includes:
  • the target relay node is used for the first transmission, where the relay path indication information includes the identification information of the target relay node or the candidate Following the configuration information of the node, the target relay node is a relay node in the candidate relay node whose configuration information matches the transmission parameter of the first transmission.
  • an embodiment of the present invention provides a path selection method, which is applied to a network side device, and the method includes:
  • the response message includes relay path indication information
  • the relay path indication information includes identification information of the target relay node or configuration information of the candidate relay node
  • the target relay node is a relay node in the candidate relay node whose configuration information matches the transmission parameter of the terminal for the first transmission; or, the response message does not include the relay path indication information.
  • an embodiment of the present invention provides a terminal, including:
  • a sending module configured to send a path selection request to the network side device, where the path selection request includes the identification information of the candidate relay node;
  • a receiving module configured to receive a response message sent by the network side device
  • the first path selection module is configured to use the target relay node for first transmission when the response message includes relay path indication information, where the relay path indication information includes the target relay node's Identification information or configuration information of the candidate relay node, and the target relay node is a relay node in the candidate relay node whose configuration information matches the transmission parameter of the first transmission.
  • an embodiment of the present invention provides a network side device, including:
  • a receiving module configured to receive a path selection request sent by a terminal, where the path selection request includes identification information of a candidate relay node;
  • the sending module is configured to send a response message to the terminal, where the response message includes relay path indication information, and the relay path indication information includes the identification information of the target relay node or the candidate relay node Configuration information, the target relay node is a relay node in the candidate relay node whose configuration information matches the transmission parameter of the terminal for the first transmission; or, the response message does not include the relay path Instructions.
  • an embodiment of the present invention provides a terminal, including: a memory, a processor, and a computer program stored on the memory and capable of running on the processor.
  • a terminal including: a memory, a processor, and a computer program stored on the memory and capable of running on the processor.
  • the computer program is executed by the processor, The steps in the path selection method provided in the first aspect of the embodiments of the present invention are implemented.
  • an embodiment of the present invention provides a network-side device, including: a memory, a processor, and a computer program stored on the memory and running on the processor, and the computer program is executed by the processor. When executed, the steps in the path selection method provided in the second aspect of the embodiment of the present invention are implemented.
  • an embodiment of the present invention provides a computer-readable storage medium on which a computer program is stored.
  • the computer program is executed by a processor, the path provided in the first aspect of the embodiment of the present invention is implemented. Select the steps in the method.
  • an embodiment of the present invention provides a computer-readable storage medium having a computer program stored on the computer-readable storage medium, and when the computer program is executed by a processor, the path provided in the second aspect of the embodiment of the present invention is implemented Select the steps in the method.
  • the terminal can send a path selection request to the network side device after discovering the candidate relay node. After receiving the path selection request, the network side device can feed back a response message to the terminal to assist the terminal in path selection. select. In this way, with the assistance of the network side equipment, the path selected by the terminal can better meet the transmission requirements, that is, the service requirements, and the applicability of path selection is improved.
  • Figure 1 is a schematic diagram of a relay node discovery process
  • Figure 2 is a schematic diagram of another relay node discovery process
  • Figure 3 is a structural diagram of a network system provided by an embodiment of the present invention.
  • FIG. 4 is a flowchart of a path selection method applied to a network system according to an embodiment of the present invention
  • FIG. 5 is a flowchart of a path selection method applied to a terminal according to an embodiment of the present invention.
  • FIG. 6 is a flowchart of a path selection method applied to a network side device according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a terminal provided by an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a network side device provided by an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of the hardware structure of a terminal provided by an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of the hardware structure of a network side device provided by an embodiment of the present invention.
  • words such as “exemplary” or “for example” are used to represent examples, illustrations, or illustrations. Any embodiment or design solution described as “exemplary” or “for example” in the embodiment of the present invention should not be construed as being more preferable or advantageous than other embodiments or design solutions. To be precise, words such as “exemplary” or “for example” are used to present related concepts in a specific manner.
  • the relay technology in the wireless communication system is to add one or more relay nodes between the network side equipment and the terminal. These relay nodes can be used to forward the wireless signal, so that the wireless signal can only reach after multiple hops. terminal.
  • wireless relay is to divide a network-side device-to-terminal link into two links, network-side device-to-relay station and relay-to-terminal, so as to have the opportunity to have a poor quality link. Replace the link with two better quality links to obtain higher link capacity and better coverage.
  • relay technology can not only be used to expand cell coverage and make up for blind spots in cell coverage, but also to increase cell capacity through spatial resource reuse.
  • relay technology can also play a role in overcoming penetration loss and improving the quality of indoor coverage.
  • the relay supported in LTE or NR is UE-to-network relay, that is, one end of the relay node is connected to the terminal, and the other end is connected to the network side device.
  • a relay node can be represented by a relay UE, and a terminal connected to the relay UE can be represented by a remote UE.
  • the remote UE can find or discover available relay UEs in two ways.
  • Method 1 As shown in Figure 1, for a certain ProSe service, if the relay UE hopes that nearby terminals can establish a UE-To-Network relay connection by itself, the relay UE can broadcast a discovery (Announcement) message, claiming that it can be This service is the relay UE of the UE-To-Network relay.
  • relay UE1, relay UE2, and relay UE3 are all available relay UEs.
  • the relay UE discovery process shown in FIG. 1 may also be referred to as a Mode A discovery process.
  • Method 2 As shown in Figure 2, for a certain ProSe service, if the remote UE wants to establish a UE-to-network relay connection through the neighboring relay UE, the remote UE broadcasts a discovery (Solicitaion) message to discover the neighboring relay UE. If the nearby relay is authorized and willing to establish a UE-to-network relay connection for the remote UE, the UE will reply a response message to the remote UE.
  • both relay UE2 and relay UE3 are available relay UEs.
  • the relay UE discovery process shown in FIG. 2 may also be referred to as a Mode B discovery process.
  • the above-mentioned available relay UEs may be collectively referred to as candidate relay nodes.
  • the remote UE when it selects a relay UE, it usually depends on the quality of the link, such as Reference Signal Received Power (RSRP), and a relay UE with a good link quality may be selected by the remote UE for transmission.
  • RSRP Reference Signal Received Power
  • the selected path may not meet service requirements.
  • LTE Long Term Evolution
  • NR ProSe commercial services are considered in ProSe communication. If the terminal needs to use relay technology for commercial service transmission, it needs to consider the choice.
  • the existing selection method suitable for the relay UE in LTE may no longer be suitable for commercial services in NR ProSe communication.
  • the configuration parameters of the relay UE may be private data of the relay UE, and the remote UE may not be able to obtain the configuration parameters of the relay UE. Therefore, the remote UE may need the assistance of the network side equipment to select the appropriate relay UE.
  • embodiments of the present invention provide a path selection method, terminal, and network side device.
  • the wireless communication system may be a 5G system, or an evolved Long Term Evolution (eLTE) system, or a subsequent evolved communication system.
  • eLTE evolved Long Term Evolution
  • FIG. 3 is a structural diagram of a network system provided by an embodiment of the present invention. As shown in FIG. 3, it includes a terminal 11 and a network side device 12.
  • the terminal 11 may be a mobile communication device, such as a mobile phone or a tablet computer. (Tablet Personal Computer), Laptop Computer, Personal Digital Assistant (PDA), Mobile Internet Device (MID) or Wearable Device (Wearable Device), etc., which need to be explained Yes, the specific type of the terminal 11 is not limited in the embodiment of the present invention.
  • the above-mentioned network side device 12 may be a 5G network side device (for example: gNB, 5G NR NB), or may be a 4G network side device (for example: eNB), or may be a 3G network side device (for example: NB), or subsequent evolution
  • 5G network side device for example: gNB, 5G NR NB
  • 4G network side device for example: eNB
  • 3G network side device for example: NB
  • FIG. 4 is a flowchart of a path selection method applied to the network system shown in FIG. 3 according to an embodiment of the present invention. As shown in Figure 4, the method includes the following steps:
  • Step 201 The terminal sends a path selection request to the network side device.
  • the path selection request includes identification information of the candidate relay node.
  • the foregoing terminal may be understood as the foregoing remote UE
  • the foregoing candidate relay node may be understood as the foregoing relay UE
  • the identification information of the foregoing candidate relay node may be understood as the identification information of the relay UE, such as the user ID of the relay UE, for example , Relay UE1, relay UE2, etc.
  • the foregoing candidate relay node can be discovered by the terminal through the method shown in Figure 1 or Figure 2, that is to say, the terminal can discover the foregoing candidate relay node through the above Mode A discovery process, or through the above Mode B discovery process.
  • the above-mentioned candidate relay node can be discovered by the terminal through the method shown in Figure 1 or Figure 2, that is to say, the terminal can discover the foregoing candidate relay node through the above Mode A discovery process, or through the above Mode B discovery process.
  • the timing for the terminal to send the path selection request to the network side device may be before the terminal performs the first transmission, that is, when the terminal needs to perform the first transmission, the terminal sends the path selection request to the network side device.
  • the first transmission can be understood as any transmission that can use relay technology, for example, the aforementioned commercial service or public safety service.
  • Step 202 The network side device receives the path selection request sent by the terminal.
  • Step 203 The network side device sends a response message to the terminal.
  • the response message includes relay path indication information
  • the relay path indication information includes identification information of a target relay node or configuration information of the candidate relay node
  • the target relay node is the standby relay node. Select the relay node whose configuration information matches the transmission parameter of the first transmission by the terminal in the relay node; or, the response message does not include the relay path indication information.
  • the network side device After receiving the path selection request sent by the terminal, the network side device can obtain the identification information of each candidate relay node according to the path selection request, so as to further obtain the configuration information of each candidate relay node.
  • the network-side device may feed back the obtained configuration information of the candidate relay node to the terminal through a response message. In this way, the terminal can check the candidate relay node configuration information after obtaining the configuration information of the candidate relay node. The subsequent nodes perform screening to select a relay node suitable for the first transmission.
  • the foregoing path selection request may also include transmission parameters for the terminal to perform the first transmission. For the case where the path selection request includes the transmission parameter of the first transmission, the terminal may perform the screening of the relay node, or the network side device may perform the screening of the relay node. If the network-side device performs relay node screening, the network-side device can screen the candidate relay nodes according to the obtained configuration information of the candidate relay nodes to select a relay node suitable for the first transmission , And feedback to the terminal through a response message.
  • the response message sent by the network side device includes relay path indication information
  • the relay path indication information includes the identification information of the target relay node or the configuration of the candidate relay node information.
  • the target relay node may be understood as the relay node that the terminal ultimately uses to perform the first transmission.
  • Step 204 The terminal receives the response message sent by the network side device.
  • Step 205 In the case that the response message includes the relay path indication information, the terminal uses the target relay node to perform the first transmission.
  • the terminal uses a direct path to perform the first transmission.
  • the response message fed back by the network-side device after the network-side device screens all candidate relay nodes, if the configuration information of all candidate relay nodes cannot meet the transmission parameters of the first transmission, the response message fed back by the network-side device will not
  • the relay path indication information is included, or, further, the response message fed back by the network side device may include the direct path indication information.
  • the screening of the relay node can be performed by the terminal or the network side device.
  • the screening principle is that the configuration information of the selected relay node can meet the transmission parameters of the first transmission, otherwise , The terminal will not perform the first transmission through the relay path, but perform the first transmission through the direct path.
  • the terminal can send a path selection request to the network side device after discovering the candidate relay node. After receiving the path selection request, the network side device can feed back a response message to the terminal to assist the terminal in path selection. select. In this way, with the assistance of the network side equipment, the path selected by the terminal can better meet the transmission requirements, that is, the service requirements, and the applicability of path selection is improved.
  • Fig. 5 is a flowchart of a path selection method applied to a terminal according to an embodiment of the present invention. As shown in Figure 5, the path selection method is applied to the terminal, and the method includes the following steps:
  • Step 301 Send a path selection request to the network side device, where the path selection request includes the identification information of the candidate relay node.
  • the above path selection request can be sent to the network side device through a Non-Access Stratum (NAS) message, such as a registration request, a service request, and so on.
  • NAS Non-Access Stratum
  • Step 302 Receive a response message sent by the network side device.
  • Step 303 When the response message includes relay path indication information, use the target relay node to perform the first transmission.
  • the relay path indication information includes the identification information of the target relay node or the configuration information of the candidate relay node, and the target relay node is the configuration information and the configuration information of the candidate relay node.
  • the configuration information of the relay node of the candidate relay node may be the QoS information supported by the candidate relay node, the load information of the network to which the candidate relay node belongs, and the NSSAI of the network to which the candidate relay node belongs. At least one of the SSC mode of the network to which the candidate relay node belongs, the established protocol data unit (PDU) session information of the candidate relay node, and the movement track information of the candidate relay node.
  • the transmission parameter of the first transmission may include at least one of the identification of the first transmission, the QoS required by the first transmission, the NSSAI of the first transmission, the SSC mode of the first transmission, and the DNN of the first transmission.
  • the QoS information may include parameters such as data rate, PDB (packet delay budget), and packet error rate (Packet Error Rate, PER).
  • the established PDU session information of the relay node may include the information of the relay PDU session that the relay node has established, the number of PDU sessions, and so on.
  • the terminal can send a path selection request to the network side device after discovering the candidate relay node. After receiving the path selection request, the network side device can feed back a response message to the terminal to assist the terminal in path selection. select. In this way, with the assistance of the network side equipment, the path selected by the terminal can better meet the transmission requirements, that is, the service requirements, and the applicability of path selection is improved.
  • the relay path indication information includes configuration information of the candidate relay node, wherein the target relay node is the terminal according to the configuration information of the candidate relay node and the second relay node.
  • the screening of relay nodes is performed by the terminal. Since the terminal can obtain the transmission parameters of the first transmission, the terminal needs to further obtain the configuration information of each candidate relay node, and the configuration of each candidate relay node The information may be fed back to the terminal by the network side device, that is, the response message sent by the network side device includes the configuration information of the candidate relay node.
  • Example 1 When the terminal needs to perform the first transmission, the terminal sends a path selection request to the network side device, the path selection request includes the identification information of the candidate relay node; the network side device receives the path selection request sent by the terminal; the network The side device sends the configuration information of the candidate relay node to the terminal according to the path selection request; the terminal receives the configuration information of the candidate relay node sent by the network side device; the terminal according to the transmission parameters of the first transmission and the configuration information of the candidate relay node Configuration information, select the target relay node from the candidate relay nodes to perform the first transmission.
  • the terminal sends a path selection request to the network side device, the path selection request includes the identification information of the candidate relay node; the network side device receives the path selection request sent by the terminal; the network The side device sends the configuration information of the candidate relay node to the terminal according to the path selection request; the terminal receives the configuration information of the candidate relay node sent by the network side device; the terminal according to the transmission parameters of the first transmission and the configuration information
  • the path selection request further includes transmission parameters of the first transmission
  • the configuration information of the candidate relay node is determined by the network side device according to the transmission parameter of the first transmission.
  • the terminal can carry the first transmission in the path selection request According to the transmission parameters of the first transmission, the network-side device can determine the configuration information of the candidate relay node that needs to be fed back to the terminal.
  • the configuration information of the candidate relay node is determined by the above method, so that the configuration information fed back by the network side device is more targeted, which can reduce the communication resources that the terminal needs to consume when screening the relay node, and the network side device does not need to feed back redundant
  • the information is conducive to saving the communication resources that the network side equipment needs to consume.
  • the path selection request further includes transmission parameters of the first transmission
  • the relay path indication information includes the identification information of the target relay node, wherein the target relay node is the network-side device according to the configuration information of the candidate relay node and the first transmission
  • the transmission parameter is a relay node selected from the candidate relay nodes.
  • the screening of relay nodes is performed by the network-side device. Since the network-side device can obtain the transmission parameters of the first transmission, the network-side device can be based on the configuration information of each candidate relay node and the first transmission. Select the relay node that can satisfy the first transmission from the candidate relay nodes, and feed back the identification information of the relay node to the terminal through a response message.
  • Example 2 When the terminal needs to perform the first transmission, the terminal sends a path selection request to the network side device, the path selection request includes the identification information of the candidate relay node and the transmission parameters of the first transmission; the network side device receives the terminal The route selection request sent; the network side device selects the relay nodes that meet the first transmission from the candidate relay nodes according to the path selection request, and sends the identification information of the relay node to the terminal; the terminal receives the network side device The identification information of the relay node is sent, and the target relay node is selected for the first transmission.
  • the relay path indication information includes:
  • the identification information of the relay node that meets the preset condition, and the target relay node is the relay node that meets the preset condition;
  • the above configuration information can be understood as the aforementioned configuration information, which can include at least one of QoS information, load information, NSSAI, SSC mode, established PDU session information, and movement track information.
  • the network side device can select a relay node that satisfies the preset condition as the relay node for the terminal to use for the first transmission.
  • the relay node that meets the preset conditions may be the optimal relay node considered by the network side device, or in other words, the optimal path considered by the network side device, for example, the relay with the best QoS among the candidate relay nodes Node, the relay node whose moving track is closest to the terminal among the candidate relay nodes, and so on.
  • the network side device may also provide a list of identification information.
  • the relay nodes satisfying the first transmission are sorted according to the configuration priority order of the relay nodes, for example, according to the configuration priority of the relay nodes from high to low. Sequence, sort the relay nodes that meet the first transmission.
  • the terminal can establish a relay connection with each relay node in the order of priority from high to low, and if it does not match, select a relay node with a lower priority until the relay connection is successful. If all the relay nodes in the identification information list do not match, the terminal can select the direct path to perform the first transmission.
  • the method further includes:
  • the direct path is used for the first transmission.
  • the terminal can use the direct path to perform the first transmission.
  • the subsequent terminal can use the direct path for the first transmission, or use other methods to select the path for the relay transmission, which is not limited in the embodiment of the present invention.
  • using a direct path to perform the first transmission includes:
  • the direct path is used for the first transmission.
  • the network-side device can feed back an empty response Message, that is, the response message neither includes relay path indication information nor direct path indication information. Or, further, the response message fed back by the network side device does not include relay path indication information, but may also include direct path indication information. In the above cases, it indicates that none of the candidate relay nodes can meet the transmission parameters of the first transmission. At this time, the terminal can use the direct path to perform the first transmission.
  • the screening of the relay node can be performed by the terminal or the network side device.
  • the screening principle is that the configuration information of the selected relay node can meet the transmission parameters of the first transmission, otherwise , The terminal will not perform the first transmission through the relay path, but perform the first transmission through the direct path.
  • Fig. 6 is a flowchart of a path selection method applied to a network side device according to an embodiment of the present invention. As shown in Figure 6, the path selection method is applied to the network side equipment, and the method includes the following steps:
  • Step 401 Receive a path selection request sent by a terminal, where the path selection request includes identification information of a candidate relay node;
  • Step 402 Send a response message to the terminal, where the response message includes relay path indication information, and the relay path indication information includes identification information of the target relay node or configuration information of the candidate relay node
  • the target relay node is a relay node in the candidate relay node whose configuration information matches the transmission parameter of the terminal for the first transmission; or, the response message does not include the relay path indication information .
  • the response message does not include the relay path indication information.
  • the response message when the response message does not include the relay path indication information, the response message further includes direct path indication information.
  • the relay path indication information includes configuration information of the candidate relay node, wherein the target relay node is the terminal according to the configuration information of the candidate relay node and the second relay node.
  • the path selection request further includes transmission parameters of the first transmission
  • the configuration information of the candidate relay node is determined by the network side device according to the transmission parameter of the first transmission.
  • the path selection request further includes transmission parameters of the first transmission
  • the relay path indication information includes the identification information of the target relay node, wherein the target relay node is the network-side device according to the configuration information of the candidate relay node and the first transmission
  • the transmission parameter is a relay node selected from the candidate relay nodes.
  • the relay path indication information includes:
  • the identification information of the relay node that meets the preset condition, and the target relay node is the relay node that meets the preset condition;
  • the configuration information of the candidate relay node includes at least one of the following:
  • Network slice selection assistance information NSSAI of the network to which the candidate relay node belongs NSSAI of the network to which the candidate relay node belongs
  • the movement track information of the candidate relay node is the movement track information of the candidate relay node.
  • the transmission parameter of the first transmission includes at least one of the following:
  • the NSSAI of the first transmission is the NSSAI of the first transmission
  • the name of the first transmitted data network is DNN.
  • the embodiment of the present invention is used as an embodiment of a network side device corresponding to the embodiment shown in FIG. 4 to FIG. 5.
  • a network side device corresponding to the embodiment shown in FIG. 4 to FIG. 5.
  • FIG. 7 is a structural diagram of a terminal provided by an embodiment of the present invention. As shown in FIG. 7, the terminal 500 includes:
  • the sending module 501 is configured to send a path selection request to the network side device, where the path selection request includes identification information of the candidate relay node;
  • the receiving module 502 is configured to receive a response message sent by the network side device
  • the first path selection module 503 is configured to use the target relay node for first transmission when the response message includes relay path indication information, where the relay path indication information includes the target relay node Or configuration information of the candidate relay node, and the target relay node is a relay node in the candidate relay node whose configuration information matches the transmission parameter of the first transmission.
  • the relay path indication information includes configuration information of the candidate relay node, wherein the target relay node is the terminal according to the configuration information of the candidate relay node and the second relay node.
  • the path selection request further includes transmission parameters of the first transmission
  • the configuration information of the candidate relay node is determined by the network side device according to the transmission parameter of the first transmission.
  • the path selection request further includes transmission parameters of the first transmission
  • the relay path indication information includes the identification information of the target relay node, wherein the target relay node is the network-side device according to the configuration information of the candidate relay node and the first transmission
  • the transmission parameter is a relay node selected from the candidate relay nodes.
  • the relay path indication information includes:
  • the identification information of the relay node that meets the preset condition, and the target relay node is the relay node that meets the preset condition;
  • the terminal 500 further includes:
  • the second path selection module is configured to use a direct path for the first transmission when the response message does not include the relay path indication information.
  • the second path selection module is specifically used for:
  • the direct path is used for the first transmission.
  • the configuration information of the candidate relay node includes at least one of the following:
  • Network slice selection assistance information NSSAI of the network to which the candidate relay node belongs NSSAI of the network to which the candidate relay node belongs
  • the movement track information of the candidate relay node is the movement track information of the candidate relay node.
  • the transmission parameter of the first transmission includes at least one of the following:
  • the NSSAI of the first transmission is the NSSAI of the first transmission
  • the name of the first transmitted data network is DNN.
  • the foregoing terminal 500 in the embodiment of the present invention may be a terminal of any implementation manner in the method embodiment, and any implementation manner of the terminal in the method embodiment may be implemented by the foregoing terminal 500 in the embodiment of the present invention, and To achieve the same beneficial effect, in order to avoid repetition, it is not repeated here.
  • FIG. 8 is a structural diagram of a network side device provided by an embodiment of the present invention. As shown in FIG. 8, the network side device 600 includes:
  • the receiving module 601 is configured to receive a path selection request sent by a terminal, where the path selection request includes identification information of a candidate relay node;
  • the sending module 602 is configured to send a response message to the terminal, where the response message includes relay path indication information, and the relay path indication information includes identification information of the target relay node or the candidate relay node
  • the target relay node is a relay node in the candidate relay node whose configuration information matches the transmission parameter of the terminal for the first transmission; or, the response message does not include the relay Path indication information.
  • the response message does not include the relay path indication information.
  • the response message when the response message does not include the relay path indication information, the response message further includes direct path indication information.
  • the relay path indication information includes configuration information of the candidate relay node, wherein the target relay node is the terminal according to the configuration information of the candidate relay node and the second relay node.
  • the path selection request further includes transmission parameters of the first transmission
  • the configuration information of the candidate relay node is determined by the network side device according to the transmission parameter of the first transmission.
  • the path selection request further includes transmission parameters of the first transmission
  • the relay path indication information includes the identification information of the target relay node, wherein the target relay node is the network-side device according to the configuration information of the candidate relay node and the first transmission
  • the transmission parameter is a relay node selected from the candidate relay nodes.
  • the relay path indication information includes:
  • the identification information of the relay node that meets the preset condition, and the target relay node is the relay node that meets the preset condition;
  • the configuration information of the candidate relay node includes at least one of the following:
  • Network slice selection assistance information NSSAI of the network to which the candidate relay node belongs NSSAI of the network to which the candidate relay node belongs
  • the movement track information of the candidate relay node is the movement track information of the candidate relay node.
  • the transmission parameter of the first transmission includes at least one of the following:
  • the NSSAI of the first transmission is the NSSAI of the first transmission
  • the name of the first transmitted data network is DNN.
  • the above-mentioned network-side device 600 in the embodiment of the present invention may be a network-side device in any implementation manner in the method embodiment, and any implementation manner of the network-side device in the method embodiment can be modified by the foregoing It is implemented by the network side device 600 and achieves the same beneficial effects. To avoid repetition, details are not described herein again.
  • the terminal 900 includes but is not limited to: a radio frequency unit 901, a network module 902, an audio output unit 903, an input unit 904, a sensor 905, a display unit 906, User input unit 907, interface unit 908, memory 909, processor 910, power supply 911 and other components.
  • a radio frequency unit 901 for implementing various embodiments of the present invention.
  • the terminal 900 includes but is not limited to: a radio frequency unit 901, a network module 902, an audio output unit 903, an input unit 904, a sensor 905, a display unit 906, User input unit 907, interface unit 908, memory 909, processor 910, power supply 911 and other components.
  • the terminal structure shown in FIG. 9 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than shown in the figure, or a combination of certain components, or a different component arrangement.
  • the terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a vehicle-mounted terminal
  • the radio frequency unit 901 is used for:
  • the target relay node is used for the first transmission, where the relay path indication information includes the identification information of the target relay node or the candidate Following the configuration information of the node, the target relay node is a relay node in the candidate relay node whose configuration information matches the transmission parameter of the first transmission.
  • the relay path indication information includes configuration information of the candidate relay node, wherein the target relay node is the terminal according to the configuration information of the candidate relay node and the second relay node.
  • the path selection request further includes transmission parameters of the first transmission
  • the configuration information of the candidate relay node is determined by the network side device according to the transmission parameter of the first transmission.
  • the path selection request further includes transmission parameters of the first transmission
  • the relay path indication information includes the identification information of the target relay node, wherein the target relay node is the network-side device according to the configuration information of the candidate relay node and the first transmission
  • the transmission parameter is a relay node selected from the candidate relay nodes.
  • the relay path indication information includes:
  • the identification information of the relay node that meets the preset condition, and the target relay node is the relay node that meets the preset condition;
  • the radio frequency unit 901 is also used for:
  • the direct path is used for the first transmission.
  • the radio frequency unit 901 is also used for:
  • the direct path is used for the first transmission.
  • the configuration information of the candidate relay node includes at least one of the following:
  • Network slice selection assistance information NSSAI of the network to which the candidate relay node belongs NSSAI of the network to which the candidate relay node belongs
  • the movement track information of the candidate relay node is the movement track information of the candidate relay node.
  • the transmission parameter of the first transmission includes at least one of the following:
  • the NSSAI of the first transmission is the NSSAI of the first transmission
  • the name of the first transmitted data network is DNN.
  • the terminal can send a path selection request to the network side device after discovering the candidate relay node. After receiving the path selection request, the network side device can feed back a response message to the terminal to assist the terminal in path selection. select. In this way, with the assistance of the network side equipment, the path selected by the terminal can better meet the transmission requirements, that is, the service requirements, and the applicability of path selection is improved.
  • the radio frequency unit 901 can be used for receiving and sending signals in the process of sending and receiving information or talking. Specifically, after receiving the downlink data from the base station, it is processed by the processor 910; Uplink data is sent to the base station.
  • the radio frequency unit 901 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
  • the radio frequency unit 901 can also communicate with the network and other devices through a wireless communication system.
  • the terminal provides users with wireless broadband Internet access through the network module 902, such as helping users to send and receive emails, browse web pages, and access streaming media.
  • the audio output unit 903 can convert the audio data received by the radio frequency unit 901 or the network module 902 or stored in the memory 909 into an audio signal and output it as sound. Moreover, the audio output unit 903 may also provide audio output related to a specific function performed by the terminal 900 (for example, call signal reception sound, message reception sound, etc.).
  • the audio output unit 903 includes a speaker, a buzzer, a receiver, and the like.
  • the input unit 904 is used to receive audio or video signals.
  • the input unit 904 may include a graphics processing unit (GPU) 9041 and a microphone 9042, and the graphics processor 9041 is used to capture images of still pictures or videos obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. Data is processed.
  • the processed image frame may be displayed on the display unit 906.
  • the image frames processed by the graphics processor 9041 may be stored in the memory 909 (or other storage medium) or sent via the radio frequency unit 901 or the network module 902.
  • the microphone 9042 can receive sound and can process such sound into audio data.
  • the processed audio data can be converted into a format that can be sent to a mobile communication base station via the radio frequency unit 901 for output in the case of a telephone call mode.
  • the terminal 900 also includes at least one sensor 905, such as a light sensor, a motion sensor, and other sensors.
  • the light sensor includes an ambient light sensor and a proximity sensor.
  • the ambient light sensor can adjust the brightness of the display panel 9061 according to the brightness of the ambient light.
  • the proximity sensor can turn off the display panel 9061 and the backlight when the terminal 900 is moved to the ear. .
  • the accelerometer sensor can detect the magnitude of acceleration in various directions (usually three-axis), and can detect the magnitude and direction of gravity when stationary, and can be used to identify terminal gestures (such as horizontal and vertical screen switching, related games, Magnetometer attitude calibration), vibration recognition related functions (such as pedometer, percussion), etc.; sensor 905 can also include fingerprint sensor, pressure sensor, iris sensor, molecular sensor, gyroscope, barometer, hygrometer, thermometer, infrared Sensors, etc., will not be repeated here.
  • the display unit 906 is used to display information input by the user or information provided to the user.
  • the display unit 906 may include a display panel 9061, and the display panel 9061 may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), etc.
  • LCD liquid crystal display
  • OLED organic light-emitting diode
  • the user input unit 907 may be used to receive input numeric or character information, and generate key signal input related to user settings and function control of the terminal.
  • the user input unit 907 includes a touch panel 9071 and other input devices 9072.
  • the touch panel 9071 also called a touch screen, can collect the user's touch operations on or near it (for example, the user uses any suitable objects or accessories such as fingers, stylus, etc.) on the touch panel 9071 or near the touch panel 9071. operating).
  • the touch panel 9071 may include two parts: a touch detection device and a touch controller.
  • the touch detection device detects the user's touch position, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it To the processor 910, the command sent by the processor 910 is received and executed.
  • the touch panel 9071 can be implemented in multiple types such as resistive, capacitive, infrared, and surface acoustic wave.
  • the user input unit 907 may also include other input devices 9072.
  • other input devices 9072 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackball, mouse, and joystick, which will not be repeated here.
  • the touch panel 9071 can cover the display panel 9071.
  • the touch panel 9071 detects a touch operation on or near it, it transmits it to the processor 910 to determine the type of the touch event, and then the processor 910 determines the type of touch event according to the touch.
  • the type of event provides corresponding visual output on the display panel 9061.
  • the touch panel 9071 and the display panel 9061 are used as two independent components to implement the input and output functions of the terminal, in some embodiments, the touch panel 9071 and the display panel 9061 can be integrated. Realize the input and output functions of the terminal, the specifics are not limited here.
  • the interface unit 908 is an interface for connecting an external device and the terminal 900.
  • the external device may include a wired or wireless headset port, an external power source (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, audio input/output (I/O) port, video I/O port, headphone port, etc.
  • the interface unit 908 may be used to receive input (for example, data information, power, etc.) from an external device and transmit the received input to one or more elements in the terminal 900 or may be used to communicate between the terminal 900 and the external device. Transfer data between.
  • the memory 909 can be used to store software programs and various data.
  • the memory 909 may mainly include a storage program area and a storage data area.
  • the storage program area may store an operating system, an application program required by at least one function (such as a sound playback function, an image playback function, etc.), etc.; Data created by the use of mobile phones (such as audio data, phone book, etc.), etc.
  • the memory 909 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.
  • the processor 910 is the control center of the terminal. It uses various interfaces and lines to connect the various parts of the entire terminal, and executes the terminal's operations by running or executing software programs and modules stored in the memory 909, and calling data stored in the memory 909. Various functions and processing data to monitor the terminal as a whole.
  • the processor 910 may include one or more processing units; preferably, the processor 910 may integrate an application processor and a modem processor, where the application processor mainly processes the operating system, user interface, application programs, etc., and the modem The processor mainly deals with wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 910.
  • the terminal 900 may also include a power source 911 (such as a battery) for supplying power to various components.
  • a power source 911 such as a battery
  • the power source 911 may be logically connected to the processor 910 through a power management system, so as to manage charging, discharging, and power consumption management through the power management system.
  • terminal 900 includes some functional modules that are not shown, which will not be repeated here.
  • the embodiment of the present invention also provides a terminal, including a processor 910, a memory 909, a computer program stored in the memory 909 and running on the processor 910, and the computer program is implemented when the processor 910 is executed.
  • a terminal including a processor 910, a memory 909, a computer program stored in the memory 909 and running on the processor 910, and the computer program is implemented when the processor 910 is executed.
  • the above-mentioned terminal 900 in this embodiment may be a terminal in any implementation manner in the method embodiment in the embodiment of the present invention, and any implementation manner of the terminal in the method embodiment in the embodiment of the present invention can be used in this embodiment.
  • the above-mentioned terminal 900 realizes and achieves the same beneficial effects, which will not be repeated here.
  • FIG. 10 is a structural diagram of a network side device provided by an embodiment of the present invention.
  • the network side device 1000 includes: a processor 1001, a transceiver 1002, a memory 1003, and a bus interface, where:
  • the transceiver 1002 is used for:
  • the response message includes relay path indication information
  • the relay path indication information includes identification information of the target relay node or configuration information of the candidate relay node
  • the target relay node is a relay node in the candidate relay node whose configuration information matches the transmission parameter of the terminal for the first transmission; or, the response message does not include the relay path indication information.
  • the response message does not include the relay path indication information.
  • the response message when the response message does not include the relay path indication information, the response message further includes direct path indication information.
  • the relay path indication information includes configuration information of the candidate relay node, wherein the target relay node is the terminal according to the configuration information of the candidate relay node and the second relay node.
  • the path selection request further includes transmission parameters of the first transmission
  • the configuration information of the candidate relay node is determined by the network side device according to the transmission parameter of the first transmission.
  • the path selection request further includes transmission parameters of the first transmission
  • the relay path indication information includes the identification information of the target relay node, wherein the target relay node is the network-side device according to the configuration information of the candidate relay node and the first transmission
  • the transmission parameter is a relay node selected from the candidate relay nodes.
  • the relay path indication information includes:
  • the identification information of the relay node that meets the preset condition, and the target relay node is the relay node that meets the preset condition;
  • the configuration information of the candidate relay node includes at least one of the following:
  • Network slice selection assistance information NSSAI of the network to which the candidate relay node belongs NSSAI of the network to which the candidate relay node belongs
  • the movement track information of the candidate relay node is the movement track information of the candidate relay node.
  • the transmission parameter of the first transmission includes at least one of the following:
  • the NSSAI of the first transmission is the NSSAI of the first transmission
  • the name of the first transmitted data network is DNN.
  • the terminal can send a path selection request to the network side device after discovering the candidate relay node. After receiving the path selection request, the network side device can feed back a response message to the terminal to assist the terminal in path selection. select. In this way, with the assistance of the network side equipment, the path selected by the terminal can better meet the transmission requirements, that is, the service requirements, and the applicability of path selection is improved.
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1001 and various circuits of the memory represented by the memory 1003 are linked together.
  • the bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, no further descriptions are provided herein.
  • the bus interface provides the interface.
  • the transceiver 1002 may be a plurality of elements, including a transmitter and a receiver, and provide a unit for communicating with various other devices on a transmission medium.
  • the user interface 1004 may also be an interface capable of connecting externally and internally with required equipment.
  • the connected equipment includes but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 1001 is responsible for managing the bus architecture and general processing, and the memory 1003 can store data used by the processor 1001 when performing operations.
  • the above-mentioned network-side device 1000 in this embodiment may be a network-side device in any implementation manner in the method embodiment of the present invention, and any implementation manner of the network-side device in the method embodiment in the present embodiment is It can be implemented by the above-mentioned network-side device 1000 in this embodiment and achieve the same beneficial effect, which will not be repeated here.
  • the embodiment of the present invention also provides a computer-readable storage medium, and a computer program is stored on the computer-readable storage medium.
  • a computer program is stored on the computer-readable storage medium.
  • the various processes of the embodiment corresponding to the terminal or the network side are realized, and can be To achieve the same technical effect, in order to avoid repetition, I will not repeat them here.
  • the computer-readable storage medium such as read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk, or optical disk, etc.
  • the technical solution of the present invention essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes a number of instructions to enable a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the method described in each embodiment of the present invention.
  • a terminal which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.

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Abstract

本发明提供一种路径选择方法、终端和网络侧设备，其中终端侧方法包括：向网络侧设备发送路径选择请求；接收网络侧设备发送的响应消息；在响应消息包括中继路径指示信息的情况下，使用目标中继节点进行第一传输，其中，中继路径指示信息包括目标中继节点的标识信息或备选中继节点的配置信息，目标中继节点为备选中继节点中配置信息与第一传输的传输参数匹配的中继节点。

Description

路径选择方法、终端和网络侧设备
相关申请的交叉引用
本申请主张在2019年12月25日在中国提交的中国专利申请号No.201911360714.2的优先权，其全部内容通过引用包含于此。
技术领域
本发明涉及通信技术领域，尤其涉及一种路径选择方法、终端和网络侧设备。
背景技术
中继(Relay)技术中，网络侧设备与终端之间设置有一个或多个中继节点，终端可选择其中一个或多个中继节点进行通信传输，或者，终端也可选择直接路径进行通信传输。目前，终端在路径选择上一般依据链路的质量，链路质量好的中继节点则可能被终端选择用来进行传输。然而，随着终端业务类型的扩展，若仅考虑链路的质量，则选择的路径可能无法满足业务需求。可见，现有路径选择方式存在无法满足业务需求的问题。
发明内容
本发明实施例提供一种路径选择方法、终端和网络侧设备，以解决现有路径选择方式无法满足业务需求的问题。
为了解决上述技术问题，本发明是这样实现的：
第一方面，本发明实施例提供一种路径选择方法，应用于终端，所述方法包括：
向网络侧设备发送路径选择请求，所述路径选择请求包括备选中继节点的标识信息；
接收所述网络侧设备发送的响应消息；
在所述响应消息包括中继路径指示信息的情况下，使用目标中继节点进行第一传输，其中，所述中继路径指示信息包括所述目标中继节点的标识信 息或所述备选中继节点的配置信息，所述目标中继节点为所述备选中继节点中配置信息与所述第一传输的传输参数匹配的中继节点。
第二方面，本发明实施例提供一种路径选择方法，应用于网络侧设备，所述方法包括：
接收终端发送的路径选择请求，所述路径选择请求包括备选中继节点的标识信息；
向所述终端发送响应消息，其中，所述响应消息包括中继路径指示信息，所述中继路径指示信息包括目标中继节点的标识信息或所述备选中继节点的配置信息，所述目标中继节点为所述备选中继节点中配置信息与所述终端进行第一传输的传输参数匹配的中继节点；或者，所述响应消息不包括所述中继路径指示信息。
第三方面，本发明实施例提供一种终端，包括：
发送模块，用于向网络侧设备发送路径选择请求，所述路径选择请求包括备选中继节点的标识信息；
接收模块，用于接收所述网络侧设备发送的响应消息；
第一路径选择模块，用于在所述响应消息包括中继路径指示信息的情况下，使用目标中继节点进行第一传输，其中，所述中继路径指示信息包括所述目标中继节点的标识信息或所述备选中继节点的配置信息，所述目标中继节点为所述备选中继节点中配置信息与所述第一传输的传输参数匹配的中继节点。
第四方面，本发明实施例提供一种网络侧设备，包括；
接收模块，用于接收终端发送的路径选择请求，所述路径选择请求包括备选中继节点的标识信息；
发送模块，用于向所述终端发送响应消息，其中，所述响应消息包括中继路径指示信息，所述中继路径指示信息包括目标中继节点的标识信息或所述备选中继节点的配置信息，所述目标中继节点为所述备选中继节点中配置信息与所述终端进行第一传输的传输参数匹配的中继节点；或者，所述响应消息不包括所述中继路径指示信息。
第五方面，本发明实施例提供一种终端，包括：存储器、处理器及存储在 所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现本发明实施例第一方面提供的路径选择方法中的步骤。
第六方面，本发明实施例提供一种网络侧设备，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现本发明实施例第二方面提供的路径选择方法中的步骤。
第七方面，本发明实施例提供一种计算机可读存储介质，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现本发明实施例第一方面提供的路径选择方法中的步骤。
第八方面，本发明实施例提供一种计算机可读存储介质，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现本发明实施例第二方面提供的路径选择方法中的步骤。
本发明实施例中，终端在发现了备选中继节点之后，可向网络侧设备发送路径选择请求，网络侧设备在接收到路径选择请求之后，可以向终端反馈响应消息，以辅助终端进行路径选择。这样，在网络侧设备的辅助下，终端所选择的路径能够更好地满足传输需求，即业务需求，提高了路径选择的适用性。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对本发明实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1是一种中继节点发现过程的示意图；
图2是另一种中继节点发现过程的示意图；
图3是本发明实施例提供的网络系统的结构图；
图4是本发明实施例提供的一种应用于网络系统的路径选择方法的流程图；
图5是本发明实施例提供的应用于终端的路径选择方法的流程图；
图6是本发明实施例提供的应用于网络侧设备的路径选择方法的流程图；
图7是本发明实施例提供的终端的结构示意图；
图8是本发明实施例提供的网络侧设备的结构示意图；
图9是本发明实施例提供的终端的硬件结构示意图；
图10是本发明实施例提供的网络侧设备的硬件结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本申请的说明书和权利要求书中的术语“包括”以及它的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。此外，说明书以及权利要求中使用“和/或”表示所连接对象的至少其中之一，例如A和/或B，表示包含单独A，单独B，以及A和B都存在三种情况。
在本发明实施例中，“示例性的”或者“例如”等词用于表示作例子、例证或说明。本发明实施例中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念。
在对本发明实施例的技术方案进行详细的说明之前，先对中继技术进行简单的介绍。
无线通信系统中的中继技术，就是在网络侧设备与终端之间增加了一个或多个中继节点，这些中继节点可用于对无线信号进行转发，这样，无线信号要经过多跳才能到达终端。
以较简单的两跳中继为例，无线中继就是将一个网络侧设备至终端的链路分割为网络侧设备至中继站和中继站至终端这两个链路，从而有机会将一个质量较差的链路替换为两个质量较好的链路，以获得更高的链路容量及更 好的覆盖。
可见，中继技术不仅可用于扩展小区覆盖，弥补小区覆盖盲点，同时也可通过空间资源复用提升小区容量。对于室内覆盖，中继技术也可起到克服穿透损耗，提升室内覆盖质量的作用。
目前，LTE或者NR中支持的中继为UE-to-network relay，即中继节点的一端连接终端，另一端连接网络侧设备。为便于理解，中继节点可用relay UE表示，跟relay UE连接的终端可用remote UE表示。
UE-to-network relay中，在建立中继连接之前，remote UE可通过两种方式寻找或发现可用的relay UE。
方式一：如图1所示，对于某个ProSe业务，如果relay UE希望临近的终端可以通过自己建立UE-To-Network relay连接，则relay UE可以广播discovery(Announcement)message，宣称自己是可以为该业务做UE-To-Network relay的relay UE。图1中，relay UE1、relay UE2和relay UE3均为可用的relay UE。图1示出的relay UE发现过程也可称为Mode A discovery过程。
方式二：如图2所示，对于某ProSe业务，如果remote UE希望通过临近relay UE建立UE-to-network relay连接，则remote UE广播discovery(Solicitaion)message，用于发现临近relay UE。临近relay UE如果授权且愿意为remote UE建立UE-to-network relay连接，则向remote UE回复response message信息。图2中，relay UE2和relay UE3均为可用的relay UE。图2示出的relay UE发现过程也可称为Mode B discovery过程。
本发明实施例中，为便于理解，上述可用的relay UE可统称为备选中继节点。
由于可用的relay UE可能有多个，即，存在多个备选中继节点，对于remote UE来说存在UE-to-network relay选择的问题，也就是说，remote UE需要对传输路径进行选择。
目前，remote UE在选择relay UE时通常依据链路的质量，例如参考信号接收功率(Reference Signal Received Power，RSRP)，链路质量好的relay UE则可能被remote UE选择用来进行传输。而随着终端业务类型的扩展，若仅 考虑链路的质量，则选择的路径可能无法满足业务需求。例如，在LTE中，上述中继技术一般适用于public safety业务，而在NR ProSe中，商业业务被考虑到了ProSe通信中，终端若需要使用中继技术进行商业业务的传输，则需要考虑所选择的relay UE的配置参数是否能够满足业务的服务质量(Quality of Service，QoS)，网络切片选择辅助信息(Network Slice Selection Assistance Information，NSSAI)，会话和服务连续性模式(Session and Service Continuity Mode，SSC Mode)，数据网络名(Data Network Name，DNN)等传输参数的需求。因此，现有适用于LTE中的relay UE的选择方式可能不再适用于NR ProSe通信中的商业业务。
然而，relay UE的配置参数可能是relay UE的私有数据，remote UE可能无法获取relay UE的配置参数，因此，remote UE选择合适的relay UE就可能需要网络侧设备辅助。
鉴于此，为了解决上述问题，本发明实施例提供一种路径选择方法、终端和网络侧设备。
下面结合附图介绍本发明的实施例。本发明提供的实施例可以应用于无线通信系统中。该无线通信系统可以为5G系统，或者演进型长期演进(Evolved Long Term Evolution，eLTE)系统，或者后续演进通信系统。
图3是本发明实施例提供的一种网络系统的结构图，如图3所示，包括终端11、网络侧设备12，其中，终端11可以是移动通信设备，例如：可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)、个人数字助理(personal digital assistant，PDA)、移动上网装置(Mobile Internet Device，MID)或可穿戴式设备(Wearable Device)等，需要说明的是，在本发明实施例中并不限定终端11的具体类型。上述网络侧设备12可以是5G网络侧设备(例如：gNB、5G NR NB)，或者可以是4G网络侧设备(例如：eNB)，或者可以是3G网络侧设备(例如：NB)，或者后续演进通信系统中的网络侧设备，等等，需要说明的是，在本发明实施例中并不限定网络侧设备22的具体类型。
图4是本发明实施例提供的应用于图3所示的网络系统的路径选择方法的流程图。如图4所示，该方法包括以下步骤：
步骤201：终端向网络侧设备发送路径选择请求。
其中，所述路径选择请求包括备选中继节点的标识信息。
上述终端可以理解为前述的remote UE，上述备选中继节点可理解为前述的relay UE，上述备选中继节点的标识信息可理解为relay UE的标识信息，如relay UE的user ID，例如，relay UE1、relay UE2等等。
上述备选中继节点可由终端通过图1或图2所示出的方式发现，也就是说，终端可以通过上述Mode A discovery过程发现上述备选中继节点，也可通过上述Mode B discovery过程发现上述备选中继节点。
终端向网络侧设备发送路径选择请求的时机可以是在终端进行第一传输之前，也就是说，在终端需要进行第一传输的情况下，终端向网络侧设备发送路径选择请求。这里，第一传输可以理解为可使用中继技术的任何传输，例如，前述所提及的商业业务或public safety业务。
步骤202：网络侧设备接收终端发送的路径选择请求。
步骤203：网络侧设备向所述终端发送响应消息。
其中，所述响应消息包括中继路径指示信息，所述中继路径指示信息包括目标中继节点的标识信息或所述备选中继节点的配置信息，所述目标中继节点为所述备选中继节点中配置信息与所述终端进行第一传输的传输参数匹配的中继节点；或者，所述响应消息不包括所述中继路径指示信息。
网络侧设备在接收到终端发送的路径选择请求之后，即可根据该路径选择请求获取每个备选中继节点的标识信息，从而进一步获取每个备选中继节点的配置信息。
本发明实施例中，网络侧设备可以将获取到的备选中继节点的配置信息通过响应消息反馈给终端，这样，终端在获取到备选中继节点的配置信息之后，可对备选中继节点进行筛选，以选择出适用于第一传输的中继节点。本发明实施例中，上述路径选择请求除了包括备选中继节点的标识信息之外，还可以包括终端进行第一传输的传输参数。对于路径选择请求包括第一传输的传输参数的情况而言，既可以由终端来执行中继节点的筛选，也可以由网络侧设备来执行中继节点的筛选。若网络侧设备执行中继节点的筛选，则网络侧设备可以根据获取到的备选中继节点的配置信息，对备选中继节点进行 筛选，以选择出适用于第一传输的中继节点，并通过响应消息反馈给终端。
不论采取上述何种方式，均可以理解为网络侧设备发送的响应消息中包括中继路径指示信息，该中继路径指示信息中包括有目标中继节点的标识信息或备选中继节点的配置信息。这里，目标中继节点可理解为终端最终用于进行第一传输的中继节点。
步骤204：终端接收所述网络侧设备发送的响应消息。
步骤205：在所述响应消息包括中继路径指示信息的情况下，终端使用目标中继节点进行第一传输。
可选的，在所述响应消息不包括所述中继路径指示信息的情况下，终端使用直接路径进行所述第一传输。
该实施方式中，网络侧设备在对所有备选中继节点进行筛选之后，若所有备选中继节点的配置信息均无法满足第一传输的传输参数，则网络侧设备反馈的响应消息将不包括中继路径指示信息，或者，进一步的，网络侧设备反馈的响应消息可包括直接路径指示信息。
综合来说，本发明实施例中，中继节点的筛选既可以由终端执行，也可以由网络侧设备执行，筛选原则为选择的中继节点的配置信息能够满足第一传输的传输参数，否则，终端将不通过中继路径进行第一传输，而是通过直接路径进行第一传输。
本发明实施例中，终端在发现了备选中继节点之后，可向网络侧设备发送路径选择请求，网络侧设备在接收到路径选择请求之后，可以向终端反馈响应消息，以辅助终端进行路径选择。这样，在网络侧设备的辅助下，终端所选择的路径能够更好地满足传输需求，即业务需求，提高了路径选择的适用性。
图5是本发明实施例提供的应用于终端的路径选择方法的流程图。如图5所示，路径选择方法，应用于终端，该方法包括以下步骤：
步骤301：向网络侧设备发送路径选择请求，所述路径选择请求包括备选中继节点的标识信息。
上述路径选择请求可通过非接入层(Non-Access Stratum，NAS)消息发送给网络侧设备，如注册请求、服务请求等。
步骤302：接收所述网络侧设备发送的响应消息。
步骤303：在所述响应消息包括中继路径指示信息的情况下，使用目标中继节点进行第一传输。
其中，所述中继路径指示信息包括所述目标中继节点的标识信息或所述备选中继节点的配置信息，所述目标中继节点为所述备选中继节点中配置信息与所述第一传输的传输参数匹配的中继节点。
本发明实施例中，上述备选中继节点的中继节点的配置信息可以备选中继节点支持的QoS信息、备选中继节点所属网络的负载信息、备选中继节点所属网络的NSSAI、备选中继节点所属网络的SSC模式、备选中继节点已建协议数据单元(Protocol Data Unit，PDU)会话信息和备选中继节点的移动轨迹信息中的至少一项。第一传输的传输参数可以包括第一传输的标识、第一传输需求的QoS、第一传输的NSSAI、第一传输的SSC模式和第一传输的DNN中的至少一项。
其中，QoS信息可包括数据率、PDB(数据包时延预算)、数据包错误率(Packet Error Rate，PER)等参数。中继节点已建PDU会话信息可以包括中继节点已经建立的中继PDU会话信息，PDU会话数量等。
本发明实施例中，终端在发现了备选中继节点之后，可向网络侧设备发送路径选择请求，网络侧设备在接收到路径选择请求之后，可以向终端反馈响应消息，以辅助终端进行路径选择。这样，在网络侧设备的辅助下，终端所选择的路径能够更好地满足传输需求，即业务需求，提高了路径选择的适用性。
可选的，所述中继路径指示信息包括所述备选中继节点的配置信息，其中，所述目标中继节点为所述终端根据所述备选中继节点的配置信息和所述第一传输的传输参数，从所述备选中继节点中选择的中继节点。
该实施方式中，中继节点的筛选由终端执行，由于终端能够获取第一传输的传输参数，因此，终端需要进一步获取各备选中继节点的配置信息，而各备选中继节点的配置信息可由网络侧设备反馈给终端，即，网络侧设备发送的响应消息中包括备选中继节点的配置信息。
为了更好地理解该实施方式，以下通过具体的示例对终端筛选过程进行 详细说明。
示例一：在终端需要进行第一传输的情况下，终端向网络侧设备发送路径选择请求，该路径选择请求包括备选中继节点的标识信息；网络侧设备接收终端发送的路径选择请求；网络侧设备根据路径选择请求，向终端发送备选中继节点的配置信息；终端接收网络侧设备发送的备选中继节点的配置信息；终端根据第一传输的传输参数和备选中继节点的配置信息，从备选中继节点中选择目标中继节点进行第一传输。
可选的，所述路径选择请求还包括所述第一传输的传输参数；
所述备选中继节点的配置信息由所述网络侧设备根据所述第一传输的传输参数确定。
考虑到备选中继节点的配置信息可能有多种，而传输参数也可能有多种，不同传输业务所关注的传输参数可能并不相同，因此，终端可以在路径选择请求中携带第一传输的传输参数，网络侧设备可以根据第一传输的传输参数确定需要反馈给终端的备选中继节点的配置信息。
通过上述方式来确定备选中继节点的配置信息，使得网络侧设备反馈的配置信息更具有针对性，能够减少终端筛选中继节点时所需要消耗的通信资源，并且网络侧设备也无需反馈多余的信息，有利于节省网络侧设备所需要消耗的通信资源。
可选的，所述路径选择请求还包括所述第一传输的传输参数；
所述中继路径指示信息包括所述目标中继节点的标识信息，其中，所述目标中继节点为所述网络侧设备根据所述备选中继节点的配置信息和所述第一传输的传输参数，从所述备选中继节点中选择的中继节点。
该实施方式中，中继节点的筛选由网络侧设备执行，由于网络侧设备能够获取到第一传输的传输参数，因此，网络侧设备可根据各备选中继节点的配置信息和第一传输的传输参数，从备选中继节点中选择能够满足第一传输的中继节点，并将中继节点的标识信息通过响应消息反馈给终端。
为了更好地理解该实施方式，以下通过具体的示例对网络侧设备筛选过程进行详细说明。
示例二：在终端需要进行第一传输的情况下，终端向网络侧设备发送路 径选择请求，该路径选择请求包括备选中继节点的标识信息和第一传输的传输参数；网络侧设备接收终端发送的路径选择请求；网络侧设备根据路径选择请求，从备选中继节点中筛选满足第一传输的中继节点，并将中继节点的标识信息发送给终端；终端接收所述网络侧设备发送的中继节点的标识信息，并从中选择目标中继节点进行第一传输。
可选的，若所述备选中继节点中配置信息与所述第一传输的传输参数匹配的中继节点的个数大于1，则所述中继路径指示信息包括：
配置信息与所述第一传输的传输参数匹配的中继节点中，满足预设条件的中继节点的标识信息，所述目标中继节点为所述满足预设条件的中继节点；或者，
配置信息与所述第一传输的传输参数匹配的中继节点的标识信息列表，所述标识信息列表的排序与中继节点的配置优先级顺序相匹配，所述目标中继节点为所述终端根据所述标识信息列表的排序选择的中继节点。
其中，上述配置信息可理解为前述的配置信息，可包括QoS信息、负载信息、NSSAI、SSC模式、已建PDU会话信息和移动轨迹信息中的至少一项。
该实施方式中，当备选中继节点中满足第一传输的中继节点的个数为多个时，网络侧设备可从中选择满足预设条件的中继节点作为供终端用于第一传输的目标中继节点。这里，满足预设条件的中继节点可以是网络侧设备认为的最优的中继节点，或者说，网络侧设备认为的最优路径，例如，备选中继节点中QoS最佳的中继节点，备选中继节点中移动轨迹与终端最接近的中继节点，等等。
网络侧设备还可以提供标识信息列表，该列表中按照中继节点的配置优先级顺序，对满足第一传输的中继节点进行排序，例如，按照中继节点的配置优先权从高至低的顺序，对满足第一传输的中继节点进行排序。终端可依次按照优先级从高至低的顺序与各中继节点建立中继连接，如果不符合，再选择优先级较低的中继节点，直至中继连接成功。若标识信息列表中的所有中继节点均不符合，则终端可选择直接路径进行第一传输。
可选的，所述方法还包括：
在所述响应消息不包括所述中继路径指示信息的情况下，使用直接路径 进行所述第一传输。
该实施方式中，网络侧设备在对所有备选中继节点进行筛选之后，若所有备选中继节点的配置信息均无法满足第一传输的传输参数，则网络侧设备反馈的响应消息不包括中继路径指示信息，这里，终端可使用直接路径进行所述第一传输。
需要说明的是，如果响应消息不包括中继路径指示信息，则后续终端可使用直接路径进行第一传输，也可采用其他方式选择路径进行中继传输，本发明实施例对此不作限定。
可选的，所述在所述响应消息不包括所述中继路径指示信息的情况下，使用直接路径进行所述第一传输，包括：
在所述响应消息不包括所述中继路径指示信息，且包括直接路径指示信息的情况下，使用直接路径进行所述第一传输。
该实施方式中，网络侧设备在对所有备选中继节点进行筛选之后，若所有备选中继节点的配置信息均无法满足第一传输的传输参数，则网络侧设备可以反馈一个空的响应消息，也就是说，该响应消息既不包括中继路径指示信息，也不包括直接路径指示信息。或者，进一步的，网络侧设备反馈的响应消息不包括中继路径指示信息，但还可包括直接路径指示信息。上述情况下，均表明备选中继节点中任一中继节点都无法满足第一传输的传输参数，此时，终端可使用直接路径进行第一传输。
综合来说，本发明实施例中，中继节点的筛选既可以由终端执行，也可以由网络侧设备执行，筛选原则为选择的中继节点的配置信息能够满足第一传输的传输参数，否则，终端将不通过中继路径进行第一传输，而是通过直接路径进行第一传输。
图6是本发明实施例提供的应用于网络侧设备的路径选择方法的流程图。如图6所示，路径选择方法，应用于网络侧设备，该方法包括以下步骤：
步骤401：接收终端发送的路径选择请求，所述路径选择请求包括备选中继节点的标识信息；
步骤402：向所述终端发送响应消息，其中，所述响应消息包括中继路径指示信息，所述中继路径指示信息包括目标中继节点的标识信息或所述备选 中继节点的配置信息，所述目标中继节点为所述备选中继节点中配置信息与所述终端进行第一传输的传输参数匹配的中继节点；或者，所述响应消息不包括所述中继路径指示信息。
可选的，在所述备选中继节点的全部中继节点的配置信息均不满足所述第一传输的传输参数的情况下，所述响应消息不包括所述中继路径指示信息。
可选的，所述响应消息不包括所述中继路径指示信息的情况下，所述响应消息还包括直接路径指示信息。
可选的，所述中继路径指示信息包括所述备选中继节点的配置信息，其中，所述目标中继节点为所述终端根据所述备选中继节点的配置信息和所述第一传输的传输参数，从所述备选中继节点中选择的中继节点。
可选的，所述路径选择请求还包括所述第一传输的传输参数；
所述备选中继节点的配置信息由所述网络侧设备根据所述第一传输的传输参数确定。
可选的，所述路径选择请求还包括所述第一传输的传输参数；
所述中继路径指示信息包括所述目标中继节点的标识信息，其中，所述目标中继节为所述网络侧设备根据所述备选中继节点的配置信息和所述第一传输的传输参数，从所述备选中继节点中选择的中继节点。
可选的，若所述备选中继节点中配置信息与所述第一传输的传输参数匹配的中继节点的个数大于1，则所述中继路径指示信息包括：
配置信息与所述第一传输的传输参数匹配的中继节点中，满足预设条件的中继节点的标识信息，所述目标中继节点为所述满足预设条件的中继节点；或者，
配置信息与所述第一传输的传输参数匹配的中继节点的标识信息列表，所述标识信息列表的排序与中继节点的配置优先级顺序相匹配，所述目标中继节点为所述终端根据所述标识信息列表的排序选择的中继节点。
可选的，所述备选中继节点的配置信息包括以下至少一项：
所述备选中继节点支持的服务质量QoS信息；
所述备选中继节点所属网络的负载信息；
所述备选中继节点所属网络的网络切片选择辅助信息NSSAI；
所述备选中继节点所属网络的会话和服务连续性SSC模式；
所述备选中继节点已建协议数据单元PDU会话信息；
所述备选中继节点的移动轨迹信息。
可选的，所述第一传输的传输参数包括以下至少一项：
所述第一传输的标识；
所述第一传输需求的QoS；
所述第一传输的NSSAI；
所述第一传输的SSC模式；
所述第一传输的数据网络名DNN。
需要说明的是，本发明实施例作为图4至图5所示的实施例对应的网络侧设备的实施例，其具体的实施方式可以参见图4至图5所示的实施例的相关说明，并能够达到相同的有益效果，为了避免重复说明，此处不再赘述。
图7是本发明实施例提供的一种终端的结构图，如图7所示，终端500包括：
发送模块501，用于向网络侧设备发送路径选择请求，所述路径选择请求包括备选中继节点的标识信息；
接收模块502，用于接收所述网络侧设备发送的响应消息；
第一路径选择模块503，用于在所述响应消息包括中继路径指示信息的情况下，使用目标中继节点进行第一传输，其中，所述中继路径指示信息包括所述目标中继节点的标识信息或所述备选中继节点的配置信息，所述目标中继节点为所述备选中继节点中配置信息与所述第一传输的传输参数匹配的中继节点。
可选的，所述中继路径指示信息包括所述备选中继节点的配置信息，其中，所述目标中继节点为所述终端根据所述备选中继节点的配置信息和所述第一传输的传输参数，从所述备选中继节点中选择的中继节点。
可选的，所述路径选择请求还包括所述第一传输的传输参数；
所述备选中继节点的配置信息由所述网络侧设备根据所述第一传输的传输参数确定。
可选的，所述路径选择请求还包括所述第一传输的传输参数；
所述中继路径指示信息包括所述目标中继节点的标识信息，其中，所述目标中继节点为所述网络侧设备根据所述备选中继节点的配置信息和所述第一传输的传输参数，从所述备选中继节点中选择的中继节点。
可选的，若所述备选中继节点中配置信息与所述第一传输的传输参数匹配的中继节点的个数大于1，则所述中继路径指示信息包括：
配置信息与所述第一传输的传输参数匹配的中继节点中，满足预设条件的中继节点的标识信息，所述目标中继节点为所述满足预设条件的中继节点；或者，
配置信息与所述第一传输的传输参数匹配的中继节点的标识信息列表，所述标识信息列表的排序与中继节点的配置优先级顺序相匹配，所述目标中继节点为所述终端根据所述标识信息列表的排序选择的中继节点。
可选的，终端500还包括：
第二路径选择模块，用于在所述响应消息不包括所述中继路径指示信息的情况下，使用直接路径进行所述第一传输。
可选的，第二路径选择模块具体用于：
在所述响应消息不包括所述中继路径指示信息，且包括直接路径指示信息的情况下，使用直接路径进行所述第一传输。
可选的，所述备选中继节点的配置信息包括以下至少一项：
所述备选中继节点支持的服务质量QoS信息；
所述备选中继节点所属网络的负载信息；
所述备选中继节点所属网络的网络切片选择辅助信息NSSAI；
所述备选中继节点所属网络的会话和服务连续性SSC模式；
所述备选中继节点已建协议数据单元PDU会话信息；
所述备选中继节点的移动轨迹信息。
可选的，所述第一传输的传输参数包括以下至少一项：
所述第一传输的标识；
所述第一传输需求的QoS；
所述第一传输的NSSAI；
所述第一传输的SSC模式；
所述第一传输的数据网络名DNN。
需要说明的是，本发明实施例中上述终端500可以是方法实施例中任意实施方式的终端，方法实施例中终端的任意实施方式都可以被本发明实施例中的上述终端500所实现，并达到相同的有益效果，为避免重复，此处不再赘述。
图8是本发明实施例提供的一种网络侧设备的结构图，如图8所示，网络侧设备600包括：
接收模块601，用于接收终端发送的路径选择请求，所述路径选择请求包括备选中继节点的标识信息；
发送模块602，用于向所述终端发送响应消息，其中，所述响应消息包括中继路径指示信息，所述中继路径指示信息包括目标中继节点的标识信息或所述备选中继节点的配置信息，所述目标中继节点为所述备选中继节点中配置信息与所述终端进行第一传输的传输参数匹配的中继节点；或者，所述响应消息不包括所述中继路径指示信息。
可选的，在所述备选中继节点的全部中继节点的配置信息均不满足所述第一传输的传输参数的情况下，所述响应消息不包括所述中继路径指示信息。
可选的，所述响应消息不包括所述中继路径指示信息的情况下，所述响应消息还包括直接路径指示信息。
可选的，所述中继路径指示信息包括所述备选中继节点的配置信息，其中，所述目标中继节点为所述终端根据所述备选中继节点的配置信息和所述第一传输的传输参数，从所述备选中继节点中选择的中继节点。
可选的，所述路径选择请求还包括所述第一传输的传输参数；
所述备选中继节点的配置信息由所述网络侧设备根据所述第一传输的传输参数确定。
可选的，所述路径选择请求还包括所述第一传输的传输参数；
所述中继路径指示信息包括所述目标中继节点的标识信息，其中，所述目标中继节为所述网络侧设备根据所述备选中继节点的配置信息和所述第一传输的传输参数，从所述备选中继节点中选择的中继节点。
可选的，若所述备选中继节点中配置信息与所述第一传输的传输参数匹 配的中继节点的个数大于1，则所述中继路径指示信息包括：
配置信息与所述第一传输的传输参数匹配的中继节点中，满足预设条件的中继节点的标识信息，所述目标中继节点为所述满足预设条件的中继节点；或者，
配置信息与所述第一传输的传输参数匹配的中继节点的标识信息列表，所述标识信息列表的排序与中继节点的配置优先级顺序相匹配，所述目标中继节点为所述终端根据所述标识信息列表的排序选择的中继节点。
可选的，所述备选中继节点的配置信息包括以下至少一项：
所述备选中继节点支持的服务质量QoS信息；
所述备选中继节点所属网络的负载信息；
所述备选中继节点所属网络的网络切片选择辅助信息NSSAI；
所述备选中继节点所属网络的会话和服务连续性SSC模式；
所述备选中继节点已建协议数据单元PDU会话信息；
所述备选中继节点的移动轨迹信息。
可选的，所述第一传输的传输参数包括以下至少一项：
所述第一传输的标识；
所述第一传输需求的QoS；
所述第一传输的NSSAI；
所述第一传输的SSC模式；
所述第一传输的数据网络名DNN。
需要说明的是，本发明实施例中上述网络侧设备600可以是方法实施例中任意实施方式的网络侧设备，方法实施例中网络侧设备的任意实施方式都可以被本发明实施例中的上述网络侧设备600所实现，并达到相同的有益效果，为避免重复，此处不再赘述。
图9为实现本发明各个实施例的一种终端的硬件结构示意图，该终端900包括但不限于：射频单元901、网络模块902、音频输出单元903、输入单元904、传感器905、显示单元906、用户输入单元907、接口单元908、存储器909、处理器910、以及电源911等部件。本领域技术人员可以理解，图9中示出的终端结构并不构成对终端的限定，终端可以包括比图示更多或更少的 部件，或者组合某些部件，或者不同的部件布置。在本发明实施例中，终端包括但不限于手机、平板电脑、笔记本电脑、掌上电脑、车载终端、可穿戴设备、以及计步器等。
其中，射频单元901用于：
向网络侧设备发送路径选择请求，所述路径选择请求包括备选中继节点的标识信息；
接收所述网络侧设备发送的响应消息；
在所述响应消息包括中继路径指示信息的情况下，使用目标中继节点进行第一传输，其中，所述中继路径指示信息包括所述目标中继节点的标识信息或所述备选中继节点的配置信息，所述目标中继节点为所述备选中继节点中配置信息与所述第一传输的传输参数匹配的中继节点。
可选的，所述中继路径指示信息包括所述备选中继节点的配置信息，其中，所述目标中继节点为所述终端根据所述备选中继节点的配置信息和所述第一传输的传输参数，从所述备选中继节点中选择的中继节点。
可选的，所述路径选择请求还包括所述第一传输的传输参数；
所述备选中继节点的配置信息由所述网络侧设备根据所述第一传输的传输参数确定。
可选的，所述路径选择请求还包括所述第一传输的传输参数；
所述中继路径指示信息包括所述目标中继节点的标识信息，其中，所述目标中继节点为所述网络侧设备根据所述备选中继节点的配置信息和所述第一传输的传输参数，从所述备选中继节点中选择的中继节点。
可选的，若所述备选中继节点中配置信息与所述第一传输的传输参数匹配的中继节点的个数大于1，则所述中继路径指示信息包括：
配置信息与所述第一传输的传输参数匹配的中继节点中，满足预设条件的中继节点的标识信息，所述目标中继节点为所述满足预设条件的中继节点；或者，
配置信息与所述第一传输的传输参数匹配的中继节点的标识信息列表，所述标识信息列表的排序与中继节点的配置优先级顺序相匹配，所述目标中继节点为所述终端根据所述标识信息列表的排序选择的中继节点。
可选的，射频单元901还用于：
在所述响应消息不包括所述中继路径指示信息的情况下，使用直接路径进行所述第一传输。
可选的，射频单元901还用于：
在所述响应消息不包括所述中继路径指示信息，且包括直接路径指示信息的情况下，使用直接路径进行所述第一传输。
可选的，所述备选中继节点的配置信息包括以下至少一项：
所述备选中继节点支持的服务质量QoS信息；
所述备选中继节点所属网络的负载信息；
所述备选中继节点所属网络的网络切片选择辅助信息NSSAI；
所述备选中继节点所属网络的会话和服务连续性SSC模式；
所述备选中继节点已建协议数据单元PDU会话信息；
所述备选中继节点的移动轨迹信息。
可选的，所述第一传输的传输参数包括以下至少一项：
所述第一传输的标识；
所述第一传输需求的QoS；
所述第一传输的NSSAI；
所述第一传输的SSC模式；
所述第一传输的数据网络名DNN。
本发明实施例中，终端在发现了备选中继节点之后，可向网络侧设备发送路径选择请求，网络侧设备在接收到路径选择请求之后，可以向终端反馈响应消息，以辅助终端进行路径选择。这样，在网络侧设备的辅助下，终端所选择的路径能够更好地满足传输需求，即业务需求，提高了路径选择的适用性。
应理解的是，本发明实施例中，射频单元901可用于收发信息或通话过程中，信号的接收和发送，具体的，将来自基站的下行数据接收后，给处理器910处理；另外，将上行的数据发送给基站。通常，射频单元901包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器、双工器等。此外，射频单元901还可以通过无线通信系统与网络和其他设备通信。
终端通过网络模块902为用户提供了无线的宽带互联网访问，如帮助用户收发电子邮件、浏览网页和访问流式媒体等。
音频输出单元903可以将射频单元901或网络模块902接收的或者在存储器909中存储的音频数据转换成音频信号并且输出为声音。而且，音频输出单元903还可以提供与终端900执行的特定功能相关的音频输出(例如，呼叫信号接收声音、消息接收声音等等)。音频输出单元903包括扬声器、蜂鸣器以及受话器等。
输入单元904用于接收音频或视频信号。输入单元904可以包括图形处理器(Graphics Processing Unit，GPU)9041和麦克风9042，图形处理器9041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。处理后的图像帧可以显示在显示单元906上。经图形处理器9041处理后的图像帧可以存储在存储器909(或其它存储介质)中或者经由射频单元901或网络模块902进行发送。麦克风9042可以接收声音，并且能够将这样的声音处理为音频数据。处理后的音频数据可以在电话通话模式的情况下转换为可经由射频单元901发送到移动通信基站的格式输出。
终端900还包括至少一种传感器905，比如光传感器、运动传感器以及其他传感器。具体地，光传感器包括环境光传感器及接近传感器，其中，环境光传感器可根据环境光线的明暗来调节显示面板9061的亮度，接近传感器可在终端900移动到耳边时，关闭显示面板9061以及背光。作为运动传感器的一种，加速计传感器可检测各个方向上(一般为三轴)加速度的大小，静止时可检测出重力的大小及方向，可用于识别终端姿态(比如横竖屏切换、相关游戏、磁力计姿态校准)、振动识别相关功能(比如计步器、敲击)等；传感器905还可以包括指纹传感器、压力传感器、虹膜传感器、分子传感器、陀螺仪、气压计、湿度计、温度计、红外线传感器等，在此不再赘述。
显示单元906用于显示由用户输入的信息或提供给用户的信息。显示单元906可包括显示面板9061，可以采用液晶显示器(Liquid Crystal Display，LCD)、有机发光二极管(Organic Light-Emitting Diode,OLED)等形式来配置显示面板9061。
用户输入单元907可用于接收输入的数字或字符信息，以及产生与终端的用户设置以及功能控制有关的键信号输入。具体地，用户输入单元907包括触控面板9071以及其他输入设备9072。触控面板9071，也称为触摸屏，可收集用户在其上或附近的触摸操作(比如用户使用手指、触笔等任何适合的物体或附件在触控面板9071上或在触控面板9071附近的操作)。触控面板9071可包括触摸检测装置和触摸控制器两个部分。其中，触摸检测装置检测用户的触摸方位，并检测触摸操作带来的信号，将信号传送给触摸控制器；触摸控制器从触摸检测装置上接收触摸信息，并将它转换成触点坐标，再送给处理器910，接收处理器910发来的命令并加以执行。此外，可以采用电阻式、电容式、红外线以及表面声波等多种类型实现触控面板9071。除了触控面板9071，用户输入单元907还可以包括其他输入设备9072。具体地，其他输入设备9072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆，在此不再赘述。
进一步的，触控面板9071可覆盖在显示面板9071上，当触控面板9071检测到在其上或附近的触摸操作后，传送给处理器910以确定触摸事件的类型，随后处理器910根据触摸事件的类型在显示面板9061上提供相应的视觉输出。虽然在图9中，触控面板9071与显示面板9061是作为两个独立的部件来实现终端的输入和输出功能，但是在某些实施例中，可以将触控面板9071与显示面板9061集成而实现终端的输入和输出功能，具体此处不做限定。
接口单元908为外部装置与终端900连接的接口。例如，外部装置可以包括有线或无线头戴式耳机端口、外部电源(或电池充电器)端口、有线或无线数据端口、存储卡端口、用于连接具有识别模块的装置的端口、音频输入/输出(I/O)端口、视频I/O端口、耳机端口等等。接口单元908可以用于接收来自外部装置的输入(例如，数据信息、电力等等)并且将接收到的输入传输到终端900内的一个或多个元件或者可以用于在终端900和外部装置之间传输数据。
存储器909可用于存储软件程序以及各种数据。存储器909可主要包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序(比如声音播放功能、图像播放功能等)等；存储数据区可 存储根据手机的使用所创建的数据(比如音频数据、电话本等)等。此外，存储器909可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他易失性固态存储器件。
处理器910是终端的控制中心，利用各种接口和线路连接整个终端的各个部分，通过运行或执行存储在存储器909内的软件程序以及模块，以及调用存储在存储器909内的数据，执行终端的各种功能和处理数据，从而对终端进行整体监控。处理器910可包括一个或多个处理单元；优选的，处理器910可集成应用处理器和调制解调处理器，其中，应用处理器主要处理操作系统、用户界面和应用程序等，调制解调处理器主要处理无线通信。可以理解的是，上述调制解调处理器也可以不集成到处理器910中。
终端900还可以包括给各个部件供电的电源911(比如电池)，优选的，电源911可以通过电源管理系统与处理器910逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。
另外，终端900包括一些未示出的功能模块，在此不再赘述。
优选的，本发明实施例还提供一种终端，包括处理器910，存储器909，存储在存储器909上并可在所述处理器910上运行的计算机程序，该计算机程序被处理器910执行时实现上述路径选择方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
需要说明的是，本实施例中上述终端900可以是本发明实施例中方法实施例中任意实施方式的终端，本发明实施例中方法实施例中终端的任意实施方式都可以被本实施例中的上述终端900所实现，以及达到相同的有益效果，此处不再赘述。
图10是本发明实施例提供的一种网络侧设备的结构图。如图10所示，网络侧设备1000包括：处理器1001、收发机1002、存储器1003和总线接口，其中：
收发机1002用于：
接收终端发送的路径选择请求，所述路径选择请求包括备选中继节点的标识信息；
向所述终端发送响应消息，其中，所述响应消息包括中继路径指示信息， 所述中继路径指示信息包括目标中继节点的标识信息或所述备选中继节点的配置信息，所述目标中继节点为所述备选中继节点中配置信息与所述终端进行第一传输的传输参数匹配的中继节点；或者，所述响应消息不包括所述中继路径指示信息。
可选的，在所述备选中继节点的全部中继节点的配置信息均不满足所述第一传输的传输参数的情况下，所述响应消息不包括所述中继路径指示信息。
可选的，所述响应消息不包括所述中继路径指示信息的情况下，所述响应消息还包括直接路径指示信息。
可选的，所述中继路径指示信息包括所述备选中继节点的配置信息，其中，所述目标中继节点为所述终端根据所述备选中继节点的配置信息和所述第一传输的传输参数，从所述备选中继节点中选择的中继节点。
可选的，所述路径选择请求还包括所述第一传输的传输参数；
所述备选中继节点的配置信息由所述网络侧设备根据所述第一传输的传输参数确定。
可选的，所述路径选择请求还包括所述第一传输的传输参数；
所述中继路径指示信息包括所述目标中继节点的标识信息，其中，所述目标中继节为所述网络侧设备根据所述备选中继节点的配置信息和所述第一传输的传输参数，从所述备选中继节点中选择的中继节点。
可选的，若所述备选中继节点中配置信息与所述第一传输的传输参数匹配的中继节点的个数大于1，则所述中继路径指示信息包括：
配置信息与所述第一传输的传输参数匹配的中继节点中，满足预设条件的中继节点的标识信息，所述目标中继节点为所述满足预设条件的中继节点；或者，
配置信息与所述第一传输的传输参数匹配的中继节点的标识信息列表，所述标识信息列表的排序与中继节点的配置优先级顺序相匹配，所述目标中继节点为所述终端根据所述标识信息列表的排序选择的中继节点。
可选的，所述备选中继节点的配置信息包括以下至少一项：
所述备选中继节点支持的服务质量QoS信息；
所述备选中继节点所属网络的负载信息；
所述备选中继节点所属网络的网络切片选择辅助信息NSSAI；
所述备选中继节点所属网络的会话和服务连续性SSC模式；
所述备选中继节点已建协议数据单元PDU会话信息；
所述备选中继节点的移动轨迹信息。
可选的，所述第一传输的传输参数包括以下至少一项：
所述第一传输的标识；
所述第一传输需求的QoS；
所述第一传输的NSSAI；
所述第一传输的SSC模式；
所述第一传输的数据网络名DNN。
本发明实施例中，终端在发现了备选中继节点之后，可向网络侧设备发送路径选择请求，网络侧设备在接收到路径选择请求之后，可以向终端反馈响应消息，以辅助终端进行路径选择。这样，在网络侧设备的辅助下，终端所选择的路径能够更好地满足传输需求，即业务需求，提高了路径选择的适用性。
在图10中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器1001代表的一个或多个处理器和存储器1003代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机1002可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。针对不同的终端，用户接口1004还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器1001负责管理总线架构和通常的处理，存储器1003可以存储处理器1001在执行操作时所使用的数据。
需要说明的是，本实施例中上述网络侧设备1000可以是本发明实施例中方法实施例中任意实施方式的网络侧设备，本发明实施例中方法实施例中网络侧设备的任意实施方式都可以被本实施例中的上述网络侧设备1000所实现，以及达到相同的有益效果，此处不再赘述。
本发明实施例还提供一种计算机可读存储介质，计算机可读存储介质上存储有计算机程序，该计算机程序被处理器执行时实现上述对应于终端或者网络侧的实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。其中，所述的计算机可读存储介质，如只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本发明各个实施例所述的方法。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以权利要求的保护范围为准。

Claims (28)

  1. 一种路径选择方法，应用于终端，包括：
    向网络侧设备发送路径选择请求，所述路径选择请求包括备选中继节点的标识信息；
    接收所述网络侧设备发送的响应消息；
    在所述响应消息包括中继路径指示信息的情况下，使用目标中继节点进行第一传输，其中，所述中继路径指示信息包括所述目标中继节点的标识信息或所述备选中继节点的配置信息，所述目标中继节点为所述备选中继节点中配置信息与所述第一传输的传输参数匹配的中继节点。
  2. 根据权利要求1所述的方法，其中，所述中继路径指示信息包括所述备选中继节点的配置信息，其中，所述目标中继节点为所述终端根据所述备选中继节点的配置信息和所述第一传输的传输参数，从所述备选中继节点中选择的中继节点。
  3. 根据权利要求2所述的方法，其中，所述路径选择请求还包括所述第一传输的传输参数；
    所述备选中继节点的配置信息由所述网络侧设备根据所述第一传输的传输参数确定。
  4. 根据权利要求1所述的方法，其中，所述路径选择请求还包括所述第一传输的传输参数；
    所述中继路径指示信息包括所述目标中继节点的标识信息，其中，所述目标中继节点为所述网络侧设备根据所述备选中继节点的配置信息和所述第一传输的传输参数，从所述备选中继节点中选择的中继节点。
  5. 根据权利要求4所述的方法，其中，若所述备选中继节点中配置信息与所述第一传输的传输参数匹配的中继节点的个数大于1，则所述中继路径指示信息包括：
    配置信息与所述第一传输的传输参数匹配的中继节点中，满足预设条件的中继节点的标识信息，所述目标中继节点为所述满足预设条件的中继节点；或者，
    配置信息与所述第一传输的传输参数匹配的中继节点的标识信息列表，所述标识信息列表的排序与中继节点的配置优先级顺序相匹配，所述目标中继节点为所述终端根据所述标识信息列表的排序选择的中继节点。
  6. 根据权利要求1所述的方法，还包括：
    在所述响应消息不包括所述中继路径指示信息的情况下，使用直接路径进行所述第一传输。
  7. 根据权利要求6所述的方法，其中，所述在所述响应消息不包括所述中继路径指示信息的情况下，使用直接路径进行所述第一传输，包括：
    在所述响应消息不包括所述中继路径指示信息，且包括直接路径指示信息的情况下，使用直接路径进行所述第一传输。
  8. 根据权利要求1所述的方法，其中，所述备选中继节点的配置信息包括以下至少一项：
    所述备选中继节点支持的服务质量QoS信息；
    所述备选中继节点所属网络的负载信息；
    所述备选中继节点所属网络的网络切片选择辅助信息NSSAI；
    所述备选中继节点所属网络的会话和服务连续性SSC模式；
    所述备选中继节点已建协议数据单元PDU会话信息；
    所述备选中继节点的移动轨迹信息。
  9. 根据权利要求1所述的方法，其中，所述第一传输的传输参数包括以下至少一项：
    所述第一传输的标识；
    所述第一传输需求的QoS；
    所述第一传输的NSSAI；
    所述第一传输的SSC模式；
    所述第一传输的数据网络名DNN。
  10. 一种路径选择方法，应用于网络侧设备，包括：
    接收终端发送的路径选择请求，所述路径选择请求包括备选中继节点的标识信息；
    向所述终端发送响应消息，其中，所述响应消息包括中继路径指示信息， 所述中继路径指示信息包括目标中继节点的标识信息或所述备选中继节点的配置信息，所述目标中继节点为所述备选中继节点中配置信息与所述终端进行第一传输的传输参数匹配的中继节点；或者，所述响应消息不包括所述中继路径指示信息。
  11. 根据权利要求10所述的方法，其中，在所述备选中继节点的全部中继节点的配置信息均不满足所述第一传输的传输参数的情况下，所述响应消息不包括所述中继路径指示信息。
  12. 根据权利要求10或11所述的方法，其中，所述响应消息不包括所述中继路径指示信息的情况下，所述响应消息还包括直接路径指示信息。
  13. 根据权利要求10所述的方法，其中，所述中继路径指示信息包括所述备选中继节点的配置信息，其中，所述目标中继节点为所述终端根据所述备选中继节点的配置信息和所述第一传输的传输参数，从所述备选中继节点中选择的中继节点。
  14. 根据权利要求13所述的方法，其中，所述路径选择请求还包括所述第一传输的传输参数；
    所述备选中继节点的配置信息由所述网络侧设备根据所述第一传输的传输参数确定。
  15. 根据权利要求10所述的方法，其中，所述路径选择请求还包括所述第一传输的传输参数；
    所述中继路径指示信息包括所述目标中继节点的标识信息，其中，所述目标中继节为所述网络侧设备根据所述备选中继节点的配置信息和所述第一传输的传输参数，从所述备选中继节点中选择的中继节点。
  16. 根据权利要求15所述的方法，其中，若所述备选中继节点中配置信息与所述第一传输的传输参数匹配的中继节点的个数大于1，则所述中继路径指示信息包括：
    配置信息与所述第一传输的传输参数匹配的中继节点中，满足预设条件的中继节点的标识信息，所述目标中继节点为所述满足预设条件的中继节点；或者，
    配置信息与所述第一传输的传输参数匹配的中继节点的标识信息列表， 所述标识信息列表的排序与中继节点的配置优先级顺序相匹配，所述目标中继节点为所述终端根据所述标识信息列表的排序选择的中继节点。
  17. 根据权利要求10所述的方法，其中，所述备选中继节点的配置信息包括以下至少一项：
    所述备选中继节点支持的服务质量QoS信息；
    所述备选中继节点所属网络的负载信息；
    所述备选中继节点所属网络的网络切片选择辅助信息NSSAI；
    所述备选中继节点所属网络的会话和服务连续性SSC模式；
    所述备选中继节点已建协议数据单元PDU会话信息；
    所述备选中继节点的移动轨迹信息。
  18. 根据权利要求10所述的方法，其中，所述第一传输的传输参数包括以下至少一项：
    所述第一传输的标识；
    所述第一传输需求的QoS；
    所述第一传输的NSSAI；
    所述第一传输的SSC模式；
    所述第一传输的数据网络名DNN。
  19. 一种终端，其特征在于，包括：
    发送模块，用于向网络侧设备发送路径选择请求，所述路径选择请求包括备选中继节点的标识信息；
    接收模块，用于接收所述网络侧设备发送的响应消息；
    第一路径选择模块，用于在所述响应消息包括中继路径指示信息的情况下，使用目标中继节点进行第一传输，其中，所述中继路径指示信息包括所述目标中继节点的标识信息或所述备选中继节点的配置信息，所述目标中继节点为所述备选中继节点中配置信息与所述第一传输的传输参数匹配的中继节点。
  20. 根据权利要求19所述的装置，其中，所述中继路径指示信息包括所述备选中继节点的配置信息，其中，所述目标中继节点为所述终端根据所述备选中继节点的配置信息和所述第一传输的传输参数，从所述备选中继节点 中选择的中继节点。
  21. 根据权利要求20所述的装置，其中，所述路径选择请求还包括所述第一传输的传输参数；
    所述备选中继节点的配置信息由所述网络侧设备根据所述第一传输的传输参数确定。
  22. 根据权利要求19所述的装置，其中，所述路径选择请求还包括所述第一传输的传输参数；
    所述中继路径指示信息包括所述目标中继节点的标识信息，其中，所述目标中继节点为所述网络侧设备根据所述备选中继节点的配置信息和所述第一传输的传输参数，从所述备选中继节点中选择的中继节点。
  23. 根据权利要求22所述的装置，其中，若所述备选中继节点中配置信息与所述第一传输的传输参数匹配的中继节点的个数大于1，则所述中继路径指示信息包括：
    配置信息与所述第一传输的传输参数匹配的中继节点中，满足预设条件的中继节点的标识信息，所述目标中继节点为所述满足预设条件的中继节点；或者，
    配置信息与所述第一传输的传输参数匹配的中继节点的标识信息列表，所述标识信息列表的排序与中继节点的配置优先级顺序相匹配，所述目标中继节点为所述终端根据所述标识信息列表的排序选择的中继节点。
  24. 根据权利要求19所述的装置，还包括：
    第二路径选择模块，用于在所述响应消息不包括所述中继路径指示信息的情况下，使用直接路径进行所述第一传输。
  25. 一种网络侧设备，其特征在于，包括：
    接收模块，用于接收终端发送的路径选择请求，所述路径选择请求包括备选中继节点的标识信息；
    发送模块，用于向所述终端发送响应消息，其中，所述响应消息包括中继路径指示信息，所述中继路径指示信息包括目标中继节点的标识信息或所述备选中继节点的配置信息，所述目标中继节点为所述备选中继节点中配置信息与所述终端进行第一传输的传输参数匹配的中继节点；或者，所述响应 消息不包括所述中继路径指示信息。
  26. 一种终端，其特征在于，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如权利要求1至9中任一项所述的路径选择方法中的步骤。
  27. 一种网络侧设备，其特征在于，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如权利要求10至18中任一项所述的路径选择方法中的步骤。
  28. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现如权利要求1至9中任一项所述的路径选择方法中的步骤；或者，实现如权利要求10至18中任一项所述的路径选择方法中的步骤。
PCT/CN2020/139387 2019-12-25 2020-12-25 路径选择方法、终端和网络侧设备 WO2021129804A1 (zh)

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