WO2023072291A1 - Procédé, appareil et dispositif d'établissement d'une connexion de relais à sauts multiples, et support - Google Patents

Procédé, appareil et dispositif d'établissement d'une connexion de relais à sauts multiples, et support Download PDF

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Publication number
WO2023072291A1
WO2023072291A1 PCT/CN2022/128819 CN2022128819W WO2023072291A1 WO 2023072291 A1 WO2023072291 A1 WO 2023072291A1 CN 2022128819 W CN2022128819 W CN 2022128819W WO 2023072291 A1 WO2023072291 A1 WO 2023072291A1
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Prior art keywords
relay
communication link
network
remote
communication
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PCT/CN2022/128819
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English (en)
Chinese (zh)
Inventor
邓强
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大唐移动通信设备有限公司
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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
    • H04W40/22—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
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to the technical field of communications, and in particular to a method, device, device and medium for establishing a multi-hop relay connection.
  • ProSe Proximity Services, Adjacent business
  • Remote UE Remote User Equipment, remote user equipment
  • UE-to-Network Relay user equipment to network equipment relay
  • the Remote UE discovers the UE-to-Network Relay through the discovery process, it establishes a PC5 connection with it and communicates with the network through the UE-to-Network Relay.
  • Remote UE is supported to connect to UE-to-Network Relay through one hop (a PC5 communication link).
  • the specific process is as follows: first, Remote UE and UE-to-Network Relay obtain service authorization information and perform PC5 discovery and PC5 communication Parameter information; then UE-to-Network Relay pre-establishes a PDU (Protocol Data Unit, protocol data unit) session for relaying Remote UE data; secondly, Remote UE discovers UE-to-Network Relay through the discovery process; then Remote UE Establish a PC5 connection with UE-to-Network Relay, and UE-to-Network Relay may create a new PDU session to relay the data of Remote UE; finally, UE-to-Network Relay assigns an IP address to Remote UE, and Remote UE passes UE -to-Network Data transmission between Relay and the network.
  • PDU Protocol Data Unit
  • Remote UE accessing the network through UE-to-Network Relay can improve network coverage and save UE power. It is an important form of network access in public safety and commercial applications.
  • the Remote UE is connected to the UE-to-Network Relay through one hop, which often cannot meet the actual needs, such as in areas with poor network signals such as basements or forests.
  • This application provides a multi-hop relay connection establishment method, device, equipment and medium to solve the connection problem between Remote UE and UE-to-Network Relay in areas with poor network signals.
  • a method for establishing a multi-hop relay connection is provided, which is applied to a first UE-to-UE (user equipment to user equipment) relay capable of relaying, and the method includes:
  • the method before sending the second direct connection communication request message to the UE-to-Network relay with a distance of N hops, the method further includes:
  • the UE-to-Network relay send a second direct connection communication request message to the UE-to-Network relay with a distance of N hops, and the corresponding to the application layer user identification 1.
  • a first communication link is established between UE-to-Network relays with a distance of N hops.
  • establishing a first communication link with the UE-to-Network relay with a distance of N hops includes:
  • N is equal to 1, according to the relay indication, send the application layer user identification of the remote UE and the application layer of the first UE-to-UE relay to the next-hop UE-to-Network relay The second direct connection communication request message identified by the user;
  • the second direct connection communication response message it is determined that a first communication link is established between UE-to-Network relays corresponding to the application layer user identifier and with a distance of 1 hop.
  • establishing a first communication link with the UE-to-Network relay with a distance of N hops includes:
  • N is greater than 1, according to the relay indication, send the second UE-to-UE relay carrying the relay indication, the application layer user identity of the remote UE, and the UE-to-Network relay
  • the second direct connection communication request message of the application layer user ID, the application layer user ID of the UE-to-Network relay is used to indicate that the second UE-to-UE relay initiates a communication corresponding to the application layer user ID
  • the second direct connection communication response message it is determined that a first communication link is established between UE-to-Network relays corresponding to the application layer user identifier and with a distance of N hops.
  • the method also includes:
  • the remote UE after receiving the first direct communication request message sent by the remote UE, it also includes:
  • a mapping relationship between the first communication link and the second communication link is stored.
  • the method further includes:
  • router notification message sent by the next-hop UE-to-Network relay or a second UE-to-UE relay through the second communication link, where the router notification message includes a UE-to-Network The IP address assigned by the relay;
  • the second aspect of the embodiments of the present application provides a method for establishing a multi-hop relay connection, which is applied to a remote UE, including:
  • an apparatus for establishing a multi-hop relay connection includes:
  • the first communication link establishment module is configured to send a second direct connection communication request message to a UE-to-Network relay with a distance of N hops through the first UE-to-UE relay with relay capability, and the distance from A first communication link is established between N-hop UE-to-Network relays, where N is an integer greater than or equal to 1;
  • the message transfer module is configured to perform the relaying from the remote UE to the UE based on the first communication link and the second communication link established with the remote UE through the first UE-to-UE relay capable of relaying Message transmission between UE-to-Network relays with a distance of N hops.
  • a device for establishing a multi-hop relay connection comprising:
  • the first direct communication request message sending module is used to relay the first direct communication request message sent to UE-to-UE through the remote UE;
  • the first direct communication response message receiving module is configured to receive the first direct communication response message sent by the UE-to-UE relay through the remote UE, and the first direct communication response message is used to determine the connection with the A communication connection is established between the UE-to-UE relays.
  • an electronic device including: a processor, and a memory for storing processor-executable instructions; wherein, the processor executes the executable instructions to implement the above-mentioned multi-hop Follow the steps of the connection establishment method.
  • a computer-readable storage medium on which computer instructions are stored, and when the instructions are executed by a processor, the steps of the above method for establishing a multi-hop relay connection are implemented.
  • This application proposes a method for Remote UE to connect to UE-to-Network Relay through UE-to-UE Relay, which solves the problem of remote UE connecting to UE through multi-hop in scenarios with poor network signals, such as basements or forests -to-Network Relay problem.
  • Figure 1a is an exemplary 5G ProSe UE-to-Network Relay architecture diagram
  • Fig. 1b is an exemplary UE-to-Network Relay connection establishment flowchart
  • Fig. 2 is a flow chart of a method for establishing a multi-hop relay connection applied to a first UE-to-UE Relay with relay capability shown in an exemplary embodiment
  • Fig. 3 is a schematic diagram of a Remote UE connected to UE-to-Network Relay through two hops shown in an exemplary embodiment
  • Fig. 4 is a flowchart of a method for establishing a multi-hop relay connection applied to a Remote UE shown in an exemplary embodiment
  • Fig. 5 is a flow chart of establishing a multi-hop UE-to-Network Relay connection shown in an exemplary embodiment
  • Fig. 6 is a flowchart of a multi-hop UE-to-Network Relay connection in which UE-to-UE Relay first establishes a connection to UE-to-Network Relay shown in an exemplary embodiment
  • Fig. 7 is a flowchart of the IP address allocation of multi-hop UE-to-Network Relay shown in an exemplary embodiment
  • Fig. 8 is a schematic diagram of a module structure applied to a device for establishing a first UE-to-UE Relay multi-hop relay connection with relay capability shown in an exemplary embodiment
  • Fig. 9 is a schematic diagram of a module structure applied to a device for establishing a Remote UE multi-hop relay connection shown in an exemplary embodiment
  • Fig. 10 is a schematic diagram of an electronic device applied to a method for establishing a first UE-to-UE Relay multi-hop relay connection with relay capability shown in an exemplary embodiment
  • Fig. 11 is a schematic diagram of an electronic device applied to a method for establishing a Remote UE multi-hop relay connection shown in an exemplary embodiment
  • Fig. 12 is a schematic diagram of a program product showing a method for establishing a multi-hop relay connection according to an exemplary embodiment.
  • Figure 1a shows the 5G ProSe UE-to-Network Relay architecture.
  • the UE When the UE is outside the coverage of the network or the signal quality of the Uu interface is poor, it cannot directly connect to the network. It can connect to the network through Remote UE and UE-to-Network Relay.
  • the specific process is shown in Figure 1b, which mainly includes the following steps:
  • Step 1a UE-to-Network Relay obtains service authorization information and parameter information for PC5 discovery and PC5 communication;
  • Step 1b Remote UE acquires service authorization information, and parameter information for PC5 discovery and PC5 communication;
  • Step 2 UE-to-Network Relay pre-establishes a PDU session for relaying Remote UE data
  • Step 3 Remote UE discovers UE-to-Network Relay through the discovery process
  • Step 4 establish a PC5 connection between Remote UE and UE-to-Network Relay;
  • UE-to-Network Relay may create a new PDU session for relaying Remote UE data;
  • Step 5 UE-to-Network Relay assigns an IP address to the Remote UE;
  • Step 6 Remote UE performs data transmission between the UE-to-Network Relay and the network.
  • UE-to-Network Relay registers to the network through the Uu interface, establishes PDU session and QoS (Quality of Service, quality of service) flow to realize communication with the network.
  • the Remote UE communicates with the UE-to-Network Relay through the PC5 interface, and forwards data through the PDU session and QoS flow of the UE-to-Network Relay to achieve the purpose of communicating with the network.
  • the Remote UE can often connect to the UE-to-Network through one hop, which often cannot meet the actual needs. For example, in the basement or in the forest, the Remote UE often needs to connect to the UE-to-Network through multiple hops. Relay, and how Remote UE connects to UE-to-Network Relay through multi-hop is an unsolved problem.
  • a method for establishing a multi-hop relay connection is provided. Based on the same idea, a device for establishing a multi-hop relay connection, an electronic device, and a computer-readable storage medium.
  • a method for establishing a multi-hop relay connection provided by this application is described below through specific embodiments. This method is applied to the first UE-to-UE relay with relay capability, as shown in FIG. 2 , including:
  • Step 201 send a second direct connection communication request message to the UE-to-Network relay with a distance of N hops, and establish a first communication link with the UE-to-Network relay with a distance of N hops, where N is an integer whose value is greater than or equal to 1;
  • the first UE-to-UE relay when N is equal to 1, the first UE-to-UE relay sends a second direct connection communication request message to the next-hop UE-to-Network relay;
  • the first UE-to-UE relay sends the second direct connection communication request message to the next-hop second UE-to-UE relay.
  • Figure 3 shows two hops, that is, the UE-to-Network Relay architecture when N is equal to 1.
  • Remote UE connects to UE-to-UE Relay through one hop, and UE-to-UE Relay connects to UE through one hop.
  • -to-Network Relay This application can realize a UE-to-Network Relay architecture with more than two hops by adding UE-to-UE Relay.
  • Step 202 based on the first communication link and the second communication link established with the remote UE, perform message transfer between the remote UE and the N-hop UE-to-Network relay.
  • the first UE-to-UE relay determines to establish the second communication link with the remote UE by receiving the first direct connection request message sent by the remote UE and sending the first direct connection response message to the remote UE. After the first communication link and the second communication link are established, the first UE-to-UE relay may store the mapping relationship between the first communication link and the second communication link.
  • the above-mentioned first direct connection request message/second direct connection communication request may carry relevant content in the direct connection request message defined in the existing protocol, so as to assist in establishing the remote UE and the first UE-to-UE relay
  • the first direct communication request can specifically carry the relay service code (Relay Service Code), the application layer user identification of the remote UE and the application layer user identification of the first UE-to-UE relay, and the second direct communication request
  • the message may specifically carry the Relay Service Code, the application-layer user identifier of the first UE-to-UE relay, and the application-layer user identifier of the UE-to-Network relay.
  • the Remote UE can be connected to the UE-to-Network Relay through a multi-hop UE-to-UE Relay to complete data transmission.
  • the second communication link between the Remote UE and the first UE-to-UE relay, and the first communication link between the first UE-to-UE relay and the N-hop UE-to-Network relay The communication link can be in any of the following ways:
  • the remote UE first establishes a second communication link with the first UE-to-UE relay, and then the first UE-to-UE relay establishes a UE-to-Network with a distance of N hops a first communication link between the relays;
  • the first UE-to-UE relay first establishes the first communication link with the UE-to-Network relay at a distance of N hops, and the remote UE then establishes the first UE-to-UE relay The second communication link between.
  • the first UE-to-UE relay has the relay capability, it broadcasts through a message
  • the first direct communication request message sent, in addition to including the Relay Service Code, the application layer user identification of the remote UE and the first UE in the first direct communication request message -
  • the application layer user ID of the to-UE relay including the application layer user ID and relay indication of the UE-to-Network relay;
  • the application layer user identification and relay indication of the UE-to-Network relay send a second direct connection communication request message to the UE-to-Network relay with a distance of N hops, which is the same as the application layer user identification Establishing a second communication link between corresponding UE-to-Network relays with a distance of N hops;
  • N According to the value of N, it can be divided into the following two cases:
  • N If N is equal to 1, then according to the relay indication, send the next-hop UE-to-Network relay carrying the application layer user identity of the remote UE and the first UE-to-UE relay The second direct connection communication request message of the application layer user identifier;
  • the second direct connection communication response message it is determined that a first communication link is established between UE-to-Network relays corresponding to the application layer user identifier and with a distance of 1 hop.
  • N is greater than 1, according to the relay indication, send the second UE-to-UE relay carrying the relay indication, the application layer user identity of the remote UE, and the UE-to-Network
  • the second direct connection communication request message of the relayed application layer user identifier, the UE-to-Network relayed application layer user identifier is used to instruct the second UE-to-UE relay to initiate communication with the application layer user Identify the communication link between the corresponding UE-to-Network relays;
  • the second direct connection communication response message it is determined that a first communication link is established between UE-to-Network relays corresponding to the application layer user identifier and with a distance of N hops.
  • the first UE-to-UE relay with relay capability determines the UE-to-Network relay with a distance of N hops through the discovery and selection process;
  • the second direct connection communication request message includes the application layer user identifier and relay capability of the UE-to-Network relay,
  • the relay capability indicates that the first UE-to-UE relay has a relay capability, and a second communication link is established between UE-to-Network relays corresponding to the application layer user identifier and N hops away;
  • N According to the value of N, it can be divided into the following two cases:
  • N If N is equal to 1, then send a second direct connection communication request message carrying the application layer user identifier and relay capability of the first UE-to-UE relay to the next-hop UE-to-Network relay ;
  • the second direct connection communication response message it is determined that a first communication link is established between UE-to-Network relays corresponding to the application layer user identifier and with a distance of 1 hop.
  • N If N is greater than 1, then send the second direct connection communication request message carrying the relay capability and the application layer user identifier of the UE-to-Network relay to the second UE-to-UE relay of the next hop, so The application layer user identifier of the UE-to-Network relay is used to instruct the second UE-to-UE relay to initiate a communication link between UE-to-Network relays corresponding to the application layer user identifier ;
  • the second direct connection communication response message it is determined that a first communication link is established between UE-to-Network relays corresponding to the application layer user identifier and with a distance of N hops.
  • the remote UE receives the first direct connection request message sent by the remote UE, and returning a first direct connection response message to the remote UE, and establishing a second communication link with the remote UE; wherein, the first The direct communication request message is sent by the remote UE after receiving the broadcasted indication information, and stores the mapping relationship between the first communication link and the second communication link.
  • the above-mentioned method 1 or method 2 is used to establish a second communication link between the remote UE and the first UE-to-UE relay, and establish a second communication link between the first UE-to-UE relay and the first UE-to-UE relay.
  • a second communication link is established between UE-to-Network relays with a distance of N hops, and after the first UE-to-UE relay stores the mapping relationship between the first communication link and the second communication link , the multi-hop UE-to-Network relay assigns an IP address for the remote UE, specifically, it can be to assign an IPv6 (Internet Protocol Version 6, Internet Protocol Version 6) address, and this embodiment also includes:
  • router notification message sent by the next-hop UE-to-Network relay or a second UE-to-UE relay through the second communication link, where the router notification message includes a UE-to-Network The IP address assigned by the relay;
  • the embodiment of the present application provides a method for establishing a multi-hop relay connection, which is applied to a Remote UE, as shown in Figure 4, including:
  • Step 401 relaying the first direct communication request message sent to UE-to-UE;
  • Step 402 Receive a first direct communication response message sent by the UE-to-UE relay, where the first direct communication response message is used to establish a communication connection with the UE-to-UE relay .
  • the Remote UE can connect to the UE-to-Network Relay through one or more UE-to-UE Relays to complete data transmission by using the method for establishing a multi-hop relay connection provided by the embodiment of the present application.
  • the first UE-to-UE relay broadcasts its relay capability through a message, and sends a first direct communication request message to the first UE-to-UE relay according to the broadcast message, and the first In addition to the Relay Service Code, the application layer user ID of the remote UE and the application layer user ID of the first UE-to-UE relay, the direct connection communication request message also includes the application layer user ID of the UE-to-Network relay and a relay indication, so that the first UE-to-UE relay is relayed to the UE-to-Network relay corresponding to the application layer user identifier of the UE-to-Network relay and N hops away according to the relay indication Sending a second direct connection communication request message;
  • the first UE-to-UE relay receives the first direct communication response message sent by the first UE-to-UE relay after receiving the second direct communication response message of the UE-to-Network Relay with a distance of N hops, and determines the connection with the first UE-to-UE relay.
  • a second communication link is established between the first UE-to-UE relay, and the first direct communication response message includes the Relay Service Code, the application layer user identifier of the remote UE, and the first UE-to-UE The application layer user ID of the relay and the application layer user ID of the UE-to-Network relay.
  • the first UE-to-UE relay is sent to the first UE-to- The UE relay sends the first direct connection communication request message, and the first direct connection communication request message includes the Relay Service Code, the application layer user identification of the remote UE, and the application layer user identification of the first UE-to-UE relay ;
  • the first direct communication response message includes the Relay Service Code, the application layer user identifier of the remote UE, and the application layer user identifier of the first UE-to-UE relay.
  • the multi-hop UE-to-Network relay Distributing an IP address for the remote UE specifically may be distributing an IPv6 address, and this embodiment also includes:
  • the router advertisement message includes an IP address assigned by the UE-to-Network relay
  • IP address Using the IP address, data transmission is performed through the first UE-to-UE relay and UE-to-Network relay.
  • This example is the multi-hop relay connection method when the above method 1 is adopted and N is equal to 1.
  • the UE-to-UE Relay determines the UE-to-Network Relay through the discovery and selection process, and the Remote UE passes The discovery and selection process determines the UE-to-UE Relay. As shown in Figure 5, the specific steps are:
  • Step 1 The Remote UE sends the first direct communication request message to the UE-to-UE Relay, which includes the Relay Service Code, the application layer user identifier (Remote UE user info) of the remote UE, and the UE-to-UE Relay application layer user identification (UE-to-UE Relay user info), UE-to-Network relay application layer user identification (UE-to-Network Relay user info) and relay indication (relay indication);
  • the UE-to-UE Relay includes the Relay Service Code, the application layer user identifier (Remote UE user info) of the remote UE, and the UE-to-UE Relay application layer user identification (UE-to-UE Relay user info), UE-to-Network relay application layer user identification (UE-to-Network Relay user info) and relay indication (relay indication);
  • the Remote UE determines the source ID (Source Layer-2 ID) and destination ID (Destination Layer-2 ID) used to send the first direct communication request message, where the Source Layer-2 ID is generated by the Remote UE itself, and the Destination Layer-2 ID Source Layer-2 ID used by UE-to-UE Relay when broadcasting Relay Service Code.
  • Source Layer-2 ID is generated by the Remote UE itself
  • Destination Layer-2 ID Source Layer-2 ID used by UE-to-UE Relay when broadcasting Relay Service Code.
  • Step 2 After receiving the first direct communication request message sent by the Remote UE, the UE-to-UE Relay judges that the request message needs to be forwarded according to the relay indication;
  • Step 3 UE-to-UE Relay sends a second direct connection communication request message to UE-to-Network Relay, and the second direct connection communication request message includes Relay Service Code, Remote UE user info, UE-to-UE Relay user info and UE-to-Network Relay user info;
  • UE-to-UE Relay determines the Source Layer-2 ID and Destination Layer-2 ID used to send the second direct connection request message, where Source Layer-2 ID is generated by UE-to-UE Relay itself, and Destination Layer-2 ID is Source Layer-2 ID used by UE-to-Network Relay when broadcasting Relay Service Code.
  • Step 4a establishing a first communication link between UE-to-UE Relay and UE-to-Network Relay;
  • Step 4b establishing a second communication link between the Remote UE and the UE-to-UE Relay
  • Step 5 UE-to-Network Relay establishes a PDU session
  • Step 6 UE-to-Network Relay returns the second direct communication response message to UE-to-UE Relay, and determines that the first communication link is established between UE-to-UE Relay and UE-to-Network Relay, the second 2.
  • the direct connection communication response message includes Relay Service Code, Remote UE user info, UE-to-UE Relay user info, UE-to-Network Relay user info and relay indication;
  • UE-to-Network Relay determines the Source Layer-2 ID and Destination Layer-2 ID used to send the second direct communication response message, where Source Layer-2 ID (assumed to be Layer-2 ID_1) is determined by UE-to-Network Relay Generated by itself, the Destination Layer-2 ID is the Source Layer-2 ID (assumed to be Layer-2 ID_2) used when UE-to-UE Relay sends the second direct communication request message in step 3.
  • the Source Layer-2 ID and Destination Layer-2 ID of UE-to-UE Relay are Layer-2 ID_2 and Layer-2 ID_1 respectively, and the Source Layer-2 ID and Destination Layer-2 ID of UE-to-Network Relay are The Destination Layer-2 IDs are Layer-2 ID_1 and Layer-2 ID_2 respectively.
  • Step 7 the UE-to-UE Relay returns the first direct communication response message to the Remote UE, and determines that a second communication link is established between the Remote UE and the UE-to-UE Relay, and the first direct communication response message includes the Relay Service Code, Remote UE user info, UE-to-UE Relay user info, and UE-to-Network Relay user info.
  • UE-to-UE Relay determines the Source Layer-2 ID and Destination Layer-2 ID used to send the first direct communication response message, where Source Layer-2 ID is generated by UE-to-UE Relay itself (assumed to be Layer-2 ID_3), the Destination Layer-2 ID is the Source Layer-2 ID (assumed to be Layer-2 ID_4) used when the Remote UE sends the first direct communication request message in step 1.
  • the Source Layer-2 ID and Destination Layer-2 ID of Remote UE are Layer-2 ID_4 and Layer-2 ID_3 respectively, and the Source Layer-2 ID of UE-to-UE Relay is used as Destination Layer-2
  • the IDs are Layer-2 ID_3 and Layer-2 ID_4 respectively.
  • PC5 communication link PC5 link-1 between Remote UE and UE-to-UE Relay can be identified by Layer-2 ID_3 and Layer-2 ID_4, PC5 communication between UE-to-UE Relay and UE-to-Network Relay Link PC5 link-2 can be identified by Layer-2 ID_1 and Layer-2 ID_2.
  • UE-to-UE Relay saves the mapping relationship between PC5 link-1 and PC5 link-2.
  • This example is a multi-hop relay connection method when the above method 2 is adopted and N is equal to 1. It is that UE-to-UE Relay first establishes the first communication link to UE-to-Network Relay, and then establishes Remote UE to UE -to-UE Relay's second communication link connection. As shown in Figure 6, the specific steps are:
  • Step 1 UE-to-UE Relay discovers UE-to-Network Relay through the process of discovery and selection, and sends a second direct connection communication request message to UE-to-Network Relay, which contains Relay Service Code, UE-to -UE Relay user info, UE-to-Network Relay user info and relay capability (relay capability), where relay capability indicates that the UE will provide multi-hop connection services for UE-to-Network Relay as UE-to-UE Relay;
  • UE-to-UE Relay determines the Source Layer-2 ID and Destination Layer-2 ID used to send the second direct communication request message, where Source Layer-2 ID is generated by UE-to-UE Relay itself, and Destination Layer-2 ID Source Layer-2 ID used by UE-to-Network Relay when broadcasting Relay Service Code.
  • Step 2 establishing a first communication link between UE-to-UE Relay and UE-to-Network Relay;
  • Step 3 UE-to-Network Relay establishes a PDU session
  • Step 4 UE-to-Network Relay returns the second direct communication response message to UE-to-UE Relay, UE-to-UE Relay determines to establish the first communication link with UE-to-Network Relay, and sends
  • the indication information that the first communication link has been established is broadcast through a message, and the message includes Relay Service Code, UE-to-UE Relay user info and UE-to-Network Relay user info;
  • UE-to-Network Relay determines the Source Layer-2 ID and Destination Layer-2 ID used to send the second direct communication response message, where Source Layer-2 ID (assumed to be Layer-2 ID_1) is determined by UE-to-Network Relay Generated by itself, the Destination Layer-2 ID is the Source Layer-2 ID (assumed to be Layer-2 ID_2) used by UE-to-UE Relay when sending the first direct communication request message in step 1.
  • the Source Layer-2 ID and Destination Layer-2 ID of UE-to-UE Relay are Layer-2 ID_2 and Layer-2 ID_1 respectively, and the Source Layer-2 ID and Destination Layer-2 ID of UE-to-Network Relay are The Destination Layer-2 IDs are Layer-2 ID_1 and Layer-2 ID_2 respectively.
  • Step 5 after the Remote UE receives the indication information broadcast by the UE-to-UE Relay that the first communication link has been established, it sends the first direct communication request message to the UE-to-UE Relay, which contains the Relay Service Code , UE-to-UE Relay user info and Remote UE user info;
  • the Remote UE determines the Source Layer-2 ID and Destination Layer-2 ID used to send the first direct communication request message, where the Source Layer-2 ID is generated by the Remote UE itself, and the Destination Layer-2 ID is the UE-to-UE Relay in Source Layer-2 ID used when broadcasting Relay Service Code.
  • Step 6 establishing a second direct communication link between the Remote UE and the UE-to-UE Relay;
  • Step 7 the UE-to-UE Relay returns the first direct communication response message to the Remote UE, and the Remote UE determines to establish a second direct communication link with the UE-to-UE Relay.
  • the first direct communication response message contains the Relay Service Code, Remote UE user info and UE-to-UE Relay user info.
  • UE-to-UE Relay determines the Source Layer-2 ID and Destination Layer-2 ID used to send the first direct communication response message, where Source Layer-2 ID is generated by UE-to-UE Relay itself (assumed to be Layer-2 ID_3), the Destination Layer-2 ID is the Source Layer-2 ID (assumed to be Layer-2 ID_4) used when the Remote UE sends the first direct communication request message in step 5.
  • the Source Layer-2 ID and Destination Layer-2 ID of Remote UE are Layer-2 ID_4 and Layer-2 ID_3 respectively, and the Source Layer-2 ID of UE-to-UE Relay is used as Destination Layer-2
  • the IDs are Layer-2 ID_3 and Layer-2 ID_4 respectively.
  • PC5 communication link PC5 link-1 between Remote UE and UE-to-UE Relay can be identified by Layer-2 ID_3 and Layer-2 ID_4, PC5 communication between UE-to-UE Relay and UE-to-Network Relay Link PC5 link-2 can be identified by Layer-2 ID_1 and Layer-2 ID_2.
  • UE-to-UE Relay saves the mapping relationship between PC5 link-1 and PC5 link-2.
  • Fig. 7 is a flow chart of multi-hop UE-to-Network Relay IP address allocation according to an exemplary embodiment. This process occurs after the second communication link is established between the Remote UE and the UE-to-UE Relay, and after the first communication link is established between the UE-to-UE Relay and the UE-to-Network Relay, where the second Both the communication link and the first communication link are PC5 communication links, represented by PC5 link-1 and PC5 link-2 respectively.
  • UE-to-UE Relay saves the mapping relationship between PC5 link-1 and PC5 link-2. As shown in Figure 7, the specific steps are:
  • Step 1 Remote UE sends a Router Solicitation (router request) message to UE-to-UE Relay through PC5 link-1;
  • Step 2 UE-to-UE Relay cannot process the Router Solicitation message, UE-to-UE Relay decides to forward the router solicitation message, UE-to-UE Relay according to the determined mapping between PC5 link-1 and PC5 link-2 The relationship is determined to use PC5 link-2 to forward the message;
  • Step 3 UE-to-UE Relay sends a Router Solicitation message to UE-to-Network Relay through PC5 link-2;
  • Step 4 UE-to-Network Relay assigns IPv6 prefix (Internet Protocol Version 6, Internet Protocol Version 6 prefix) to Remote UE, UE-to-Network Relay sends Router Advertisement (router Advertisement) to UE-to-UE Relay through Router Solicitation Notification) message, which contains IPv6 prefix;
  • IPv6 prefix Internet Protocol Version 6, Internet Protocol Version 6 prefix
  • Router Advertisement Router Advertisement
  • Step 5 UE-to-UE Relay determines to use PC5 link-1 to forward the message according to the determined mapping relationship between PC5 link-1 and PC5 link-2;
  • Step 6 UE-to-UE Relay sends a Router Advertisement message to Remote UE through PC5 link-1;
  • Step 7 Remote UE performs data transmission through UE-to-UE Relay and UE-to-Network Relay.
  • the embodiment of the present application also provides a device for establishing a multi-hop relay connection. Since the device is the device in the method in the embodiment of the present application, and the problem-solving principle of the device is similar to the method, Therefore, the implementation of the device can refer to the implementation of the method, and the repetition will not be repeated.
  • the above-mentioned device includes the following modules:
  • the first communication link establishment module 801 is configured to send a second direct connection communication request message to a UE-to-Network relay with a distance of N hops through the first UE-to-UE relay capable of relaying, and the A first communication link is established between UE-to-Network relays with a distance of N hops, where N is an integer with a value greater than or equal to 1;
  • the message transfer module 802 is configured to perform the remote UE-to-UE relay based on the first communication link and the second communication link established with the remote UE through the first UE-to-UE relay capable of relaying. Message transfer between UE-to-Network relays with a distance of N hops.
  • the relay capability of the UE-to-UE relay is broadcast through a message
  • the first communication link establishing module is configured to use the first UE-to-UE relay capability with the relay capability to - before the UE relay sends the second direct connection communication request message to the UE-to-Network relay with a distance of N hops, it receives the first direct connection communication request message sent by the remote UE according to the broadcast message, the first direct connection
  • the communication request message includes the UE-to-Network relay application layer user identification and relay indication;
  • the UE-to-Network relay send a second direct connection communication request message to the UE-to-Network relay with a distance of N hops, and the corresponding to the application layer user identification 1.
  • a first communication link is established between UE-to-Network relays with a distance of N hops.
  • the first communication link establishment module is configured to relay the UE-to-Network with a distance of N hops through the first UE-to-UE relay capable of relaying Establishing a first communication link between, including:
  • N is equal to 1, according to the relay indication, send the application layer user identification of the remote UE and the application layer of the first UE-to-UE relay to the next-hop UE-to-Network relay The second direct connection communication request message identified by the user;
  • the second direct connection communication response message it is determined that a first communication link is established between UE-to-Network relays corresponding to the application layer user identifier and with a distance of 1 hop.
  • the first communication link establishment module is configured to relay the UE-to-Network with a distance of N hops through the first UE-to-UE relay capable of relaying Establishing a first communication link between, including:
  • N is greater than 1, according to the relay indication, send the second UE-to-UE relay carrying the relay indication, the application layer user identity of the remote UE, and the UE-to-Network relay
  • the second direct connection communication request message of the application layer user ID, the application layer user ID of the UE-to-Network relay is used to indicate that the second UE-to-UE relay initiates a communication corresponding to the application layer user ID
  • the second direct connection communication response message it is determined that a first communication link is established between UE-to-Network relays corresponding to the application layer user identifier and with a distance of N hops.
  • the first communication link establishment module is configured to relay the UE-to-Network with a distance of N hops through the first UE-to-UE relay capable of relaying After the first communication link is established, it also includes:
  • the unit also includes:
  • the second communication link establishment module is configured to receive the first direct communication request message sent by the remote UE through the first UE-to-UE relay capable of relaying, and return the first direct communication request message to the remote UE A connection response message, establishing a second communication link with the remote UE; wherein, the first direct connection communication request message is sent by the remote UE after receiving the broadcasted indication information.
  • the first communication link establishment module is configured to relay through the first UE-to-UE capable of relaying after receiving the first direct communication request message sent by the remote UE ,Also includes:
  • a mapping relationship between the first communication link and the second communication link is stored.
  • the device also includes:
  • a router request message receiving module configured to receive the router request message sent by the remote UE through the second communication link through the first UE-to-UE relay capable of relaying;
  • a router request message sending module configured to determine the corresponding first communication link according to the mapping relationship through the first UE-to-UE relay capable of relaying, and transmit the message to the downlink through the first communication link.
  • a hop UE-to-Network relay or a second UE-to-UE relay sends a router solicitation message;
  • the router notifies the message sending module, configured to receive the UE-to-Network relay of the next hop through the first UE-to-UE relay capable of relaying or the UE-to-UE relay through the second UE-to-UE relay A router notification message sent by the second communication link, wherein the router notification message includes the IP address allocated by the UE-to-Network relay;
  • An IP address sending module configured to send the IP address to the remote UE based on the first communication link through the first UE-to-UE relay capable of relaying.
  • the embodiment of the present application also provides a device for establishing a multi-hop relay connection.
  • a device for establishing a multi-hop relay connection is provided. As shown in FIG. 9 , the device includes:
  • the first direct communication request message sending module 901 configured to relay the first direct communication request message sent from the remote UE to UE-to-UE;
  • the first direct communication response message receiving module 902 is configured to receive the first direct communication response message sent by the UE-to-UE relay through the remote UE, and the first direct communication response message is used to determine the connection with A communication connection is established between the UE-to-UE relays.
  • the embodiment of the present application also provides an electronic device for establishing a multi-hop relay connection, since the electronic device is the electronic device in the method in the embodiment of the present application, and the electronic device solves the problem
  • the principle is similar to the method, so the implementation of the electronic device can refer to the implementation of the method, and the repetition will not be repeated.
  • FIG. 10 An electronic device 100 according to this embodiment of the present application is described below with reference to FIG. 10 .
  • the electronic device 100 shown in FIG. 10 is only an example, and should not limit the functions and scope of use of the embodiments of the present application.
  • the electronic device 100 may be in the form of a general computing device, for example, it may be a terminal device.
  • Components of the electronic device 100 may include, but are not limited to: at least one processor 101, at least one memory 102 storing processor-executable instructions, and a bus 103 connecting different system components (including the memory 102 and the processor 101).
  • the processor implements the following steps by running the executable instructions:
  • the processor before sending the second direct connection communication request message to the UE-to-Network relay with a distance of N hops, the processor further executes:
  • the relay capability of the UE-to-UE relay is broadcast through a message, and receives a first direct communication request message sent by the remote UE according to the broadcast message; wherein, the first direct communication request message includes Application layer user identification and relay indication of UE-to-Network relay;
  • the UE-to-Network relay send a second direct connection communication request message to the UE-to-Network relay with a distance of N hops, and the corresponding to the application layer user identification 1.
  • a first communication link is established between UE-to-Network relays with a distance of N hops.
  • establishing a first communication link with the UE-to-Network relay with a distance of N hops includes:
  • N is equal to 1, according to the relay indication, send the application layer user identification of the remote UE and the application layer of the first UE-to-UE relay to the next-hop UE-to-Network relay The second direct connection communication request message identified by the user;
  • the second direct connection communication response message it is determined that a first communication link is established between UE-to-Network relays corresponding to the application layer user identifier and with a distance of 1 hop.
  • establishing a first communication link with the UE-to-Network relay with a distance of N hops includes:
  • N is greater than 1, according to the relay indication, send the second UE-to-UE relay carrying the relay indication, the application layer user identity of the remote UE, and the UE-to-Network relay
  • the second direct connection communication request message of the application layer user ID, the application layer user ID of the UE-to-Network relay is used to indicate that the second UE-to-UE relay initiates a communication corresponding to the application layer user ID
  • the second direct connection communication response message it is determined that a first communication link is established between UE-to-Network relays corresponding to the application layer user identifier and with a distance of N hops.
  • the processor after establishing the first communication link with the UE-to-Network relay with a distance of N hops, the processor further executes:
  • the method also includes:
  • the method further includes:
  • a mapping relationship between the first communication link and the second communication link is stored.
  • the processor also executes:
  • router notification message sent by the next-hop UE-to-Network relay or a second UE-to-UE relay through the second communication link, where the router notification message includes a UE-to-Network The IP address assigned by the relay;
  • Bus 103 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, a processor, or a local bus using any of a variety of bus structures.
  • the memory 102 may include readable media in the form of volatile memory, such as random access memory (RAM) 1021 and/or cache memory 1022 , and may further include a read only memory (ROM) 1023 .
  • RAM random access memory
  • ROM read only memory
  • Memory 102 may also include programs/utilities 1025 having a set (at least one) of program modules 1024 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, which Each or some combination of the examples may include the implementation of a network environment.
  • programs/utilities 1025 having a set (at least one) of program modules 1024 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, which Each or some combination of the examples may include the implementation of a network environment.
  • the electronic device 100 can also communicate with one or more external devices 104 (such as keyboards, pointing devices, etc.), and can also communicate with one or more devices that enable the user to interact with the electronic device 100, and/or communicate with the electronic device 100. Any device (eg, router, modem, etc.) capable of communicating with one or more other computing devices communicates. Such communication may occur through input/output (I/O) interface 105 .
  • the electronic device 100 can also communicate with one or more networks (such as a local area network (LAN), a wide area network (WAN) and/or a public network such as the Internet) through the network adapter 106 . As shown, the network adapter 106 communicates with other modules of the electronic device 100 through the bus 103 .
  • other hardware and/or software modules may be used in conjunction with electronic device 100, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives And data backup storage system, etc.
  • FIG. 11 An electronic device 110 according to this embodiment of the present application is described below with reference to FIG. 11 .
  • the electronic device 110 shown in FIG. 11 is only an example, and should not limit the functions and scope of use of this embodiment of the present application.
  • the electronic device 110 may be in the form of a general-purpose computing device, for example, it may be a terminal device.
  • Components of the electronic device 110 may include, but are not limited to: at least one processor 111, at least one memory 112 storing processor-executable instructions, and a bus 113 connecting different system components (including the memory 112 and the processor 111).
  • the processor implements the following steps by running the executable instructions:
  • Bus 113 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, a processor, or a local bus using any of a variety of bus structures.
  • Memory 112 may include readable media in the form of volatile memory, such as random access memory (RAM) 1121 and/or cache memory 1122 , and may further include read only memory (ROM) 1123 .
  • RAM random access memory
  • ROM read only memory
  • Memory 112 may also include programs/utilities 1125 having a set (at least one) of program modules 1124 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, which Each or some combination of the examples may include the implementation of a network environment.
  • programs/utilities 1125 having a set (at least one) of program modules 1124 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, which Each or some combination of the examples may include the implementation of a network environment.
  • Electronic device 110 may also communicate with one or more external devices 114 (e.g., keyboards, pointing devices, etc.), and may also communicate with one or more devices that enable a user to interact with electronic device 110, and/or communicate with one or more devices that enable electronic device 110 to Any device (eg, router, modem, etc.) capable of communicating with one or more other computing devices communicates. Such communication may occur through input/output (I/O) interface 115 .
  • the electronic device 110 can also communicate with one or more networks (such as a local area network (LAN), a wide area network (WAN) and/or a public network such as the Internet) through the network adapter 116 . As shown, network adapter 116 communicates with other modules of electronic device 110 via bus 113 .
  • network adapter 116 communicates with other modules of electronic device 110 via bus 113 .
  • other hardware and/or software modules may be used in conjunction with electronic device 110, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID
  • various aspects of the present application can also be implemented in the form of a program product, which includes program code.
  • the program product runs on the terminal device, the program code is used to make the terminal device execute the above-mentioned
  • the terminal device can be used in UE-to-Network with a distance of N hops
  • N is an integer with a value greater than or equal to 1
  • the communication link and the second communication link established with the remote UE perform operations such as message transfer between the remote UE and the UE-to-Network relay with a distance of N hops.
  • a program product may take the form of any combination of one or more readable media.
  • the readable medium may be a readable signal medium or a readable storage medium.
  • a readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or any combination thereof. More specific examples (non-exhaustive list) of readable storage media include: electrical connection with one or more conductors, portable disk, hard disk, random access memory (RAM), read only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.
  • a program product 120 for setting up a multi-hop relay connection according to an embodiment of the present application is described, which can adopt a portable compact disk read-only memory (CD-ROM) and include program codes, and can be downloaded at Runs on end devices such as personal computers.
  • CD-ROM portable compact disk read-only memory
  • the program product of the present application is not limited thereto.
  • a readable storage medium may be any tangible medium containing or storing a program, and the program may be used by or in combination with an instruction execution system, device, or device.
  • a readable signal medium may include a data signal carrying readable program code in baseband or as part of a carrier wave. Such propagated data signals may take many forms, including - but not limited to - electromagnetic signals, optical signals, or any suitable combination of the foregoing.
  • a readable signal medium may also be any readable medium other than a readable storage medium that can transmit, propagate, or transport a program for use by or in conjunction with an instruction execution system, apparatus, or device.
  • Program code embodied on a readable medium may be transmitted using any appropriate medium, including - but not limited to - wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
  • Program codes for performing the operations of the present application can be written in any combination of one or more programming languages, including object-oriented programming languages—such as Java, C++, etc., as well as conventional procedural programming Language - such as "C" or similar programming language.
  • the program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server to execute.
  • the remote computing device may be connected to the user computing device through any kind of network, including a local area network (LAN) or a wide area network (WAN), or, alternatively, may be connected to an external computing device (e.g., using an Internet service Provider via Internet connection).
  • LAN local area network
  • WAN wide area network
  • an external computing device e.g., using an Internet service Provider via Internet connection.
  • the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) having computer-usable program code embodied therein.
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

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Abstract

La présente demande concerne un procédé, un appareil et un dispositif d'établissement d'une connexion de relais à sauts multiples, ainsi qu'un support. Le procédé comprend les étapes consistant à : envoyer un second message de demande de communication par connexion directe à un relais d'un UE à un réseau à une distance de N sauts et établir une première liaison de communication avec le relais d'un UE à un réseau à une distance de N sauts, N étant un entier supérieur ou égal à 1 ; et, sur la base de la première liaison de communication et d'une seconde liaison de communication établie avec un UE distant, effectuer un transfert de message entre l'UE distant et le relais d'un UE à un réseau à une distance de N sauts. La présente demande résout le problème de la connexion d'un UE distant à un relais d'un UE à un réseau au moyen de multiples sauts.
PCT/CN2022/128819 2021-11-01 2022-10-31 Procédé, appareil et dispositif d'établissement d'une connexion de relais à sauts multiples, et support WO2023072291A1 (fr)

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CN116390194A (zh) * 2023-06-01 2023-07-04 上海星思半导体有限责任公司 接入策略的选择方法、状态信息的发送方法及装置

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WO2020223629A1 (fr) * 2019-05-01 2020-11-05 Convida Wireless, Llc Procédés pour la sélection d'un relais à sauts multiples dans un réseau 5g
US20210250749A1 (en) * 2020-02-07 2021-08-12 Qualcomm Incorporated Proximity service multi-hop relay configuration

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CN111836338A (zh) * 2018-01-09 2020-10-27 Oppo广东移动通信有限公司 中继传输的方法和中继节点
WO2020223629A1 (fr) * 2019-05-01 2020-11-05 Convida Wireless, Llc Procédés pour la sélection d'un relais à sauts multiples dans un réseau 5g
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Publication number Priority date Publication date Assignee Title
CN116390194A (zh) * 2023-06-01 2023-07-04 上海星思半导体有限责任公司 接入策略的选择方法、状态信息的发送方法及装置
CN116390194B (zh) * 2023-06-01 2023-10-27 上海星思半导体有限责任公司 接入策略的选择方法、状态信息的发送方法及装置

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