WO2024027491A1 - 路径转换方法、装置和系统 - Google Patents

路径转换方法、装置和系统 Download PDF

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Publication number
WO2024027491A1
WO2024027491A1 PCT/CN2023/107695 CN2023107695W WO2024027491A1 WO 2024027491 A1 WO2024027491 A1 WO 2024027491A1 CN 2023107695 W CN2023107695 W CN 2023107695W WO 2024027491 A1 WO2024027491 A1 WO 2024027491A1
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WIPO (PCT)
Prior art keywords
terminal
communication path
path
communication
indication information
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PCT/CN2023/107695
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English (en)
French (fr)
Inventor
贾靖
聂衡
邢燕霞
毕奇
Original Assignee
中国电信股份有限公司
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Publication of WO2024027491A1 publication Critical patent/WO2024027491A1/zh

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Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/34—Modification of an existing route
    • H04W40/38—Modification of an existing route adapting due to varying relative distances between nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • 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
    • H04W76/00—Connection management
    • H04W76/30—Connection release

Definitions

  • the present disclosure relates to the field of information and communication technology, and in particular to a path conversion method, device and system.
  • Terminals can communicate with each other through a communication path based on a mobile communication network interface (such as a Uu interface), or through a communication path based on a direct communication interface (such as a PC5 interface).
  • a mobile communication network interface such as a Uu interface
  • a direct communication interface such as a PC5 interface
  • the present disclosure proposes a path conversion method, device and system.
  • a path conversion method including: when the communication between the first terminal and the second terminal satisfies the path conversion triggering condition from the first communication path to the second communication path, A terminal sends address indication information to a second terminal.
  • the address indication information is used to instruct the session address under the first communication path to be used under the second communication path; the first terminal uses the session address under the first communication path through the second communication path. Path to communicate with the second terminal.
  • the method further includes: the first terminal establishing a second communication path with the second terminal, wherein the first terminal sends the address indication information to the second terminal when establishing the second communication path with the second terminal. Executed during the communication path.
  • the first communication path is a communication path based on the direct communication interface, and the second communication path is a communication path through the mobile network; or, the first communication path is a communication path through the mobile network, and the second communication path is a communication path through the mobile network.
  • the communication path is a communication path based on a direct communication interface.
  • the first communication path is a communication path based on the Uu interface
  • the second communication path is a communication path based on the PC5 interface.
  • the first terminal sending the address indication information to the second terminal includes: sending the address indication information to the second terminal A direct link security mode command message is sent, wherein the direct link security mode command message includes the address indication information.
  • establishing the second communication path between the first terminal and the second terminal further includes: before sending the direct link security mode command message to the second terminal, sending a direct communication request to the second terminal; After the second terminal sends the direct link security mode command message, it receives the direct link security mode completion message and the direct communication acceptance message sent by the second terminal.
  • the direct link security mode completion message does not include address configuration information of the second terminal.
  • the session address under the first communication path includes: an address of a protocol data unit PDU session.
  • the path conversion triggering condition includes: the first terminal receives a path conversion instruction sent by the application server; or the first terminal automatically triggers.
  • the method further includes: before the first terminal sends address indication information to the second terminal, the first terminal sends a discovery request to the application server; the first terminal receives the first terminal indication information sent by the application server, so The first terminal indication information is used to indicate that the terminal that previously communicated with the first terminal through the first communication path is the second terminal.
  • the discovery request includes an identity of the first terminal.
  • the method further includes: the first terminal sending a path conversion instruction message to the second terminal, wherein the path conversion instruction message is used to instruct the second terminal to convert the first communication path to the second communication path.
  • the method further includes: the first terminal receiving a path conversion response message corresponding to the path conversion indication message sent by the second terminal.
  • the method further includes: after converting the first communication path to the second communication path, the first terminal releases the session under the first communication path or deactivates the radio bearer of the session under the first communication path.
  • the path conversion indication message includes at least one of the following: a path conversion direction, and indication information that traffic is no longer transmitted through the first communication path.
  • another path conversion method including: the second terminal receives address indication information sent by the first terminal, and the address indication information is used to indicate using the first communication path under the second communication path. session address; the second terminal communicates with the first terminal through the second communication path based on the session address under the first communication path.
  • yet another path conversion method executed by the first terminal, including: Determining that a path conversion trigger condition from the first communication path to the second communication path is met; discovering a second terminal with the assistance of the application server, the second terminal being a terminal that previously communicated with the first terminal through the first communication path ; Establish the second communication path with the second terminal.
  • discovering the second terminal with the assistance of an application server includes: sending a discovery request to the application server; receiving first terminal indication information sent by the application server, where the first terminal indication information is used to indicate a previous The terminal that communicates with the first terminal through the first communication path is the second terminal.
  • a path conversion device which is provided at a first terminal and includes: a sending module configured so that communication between the first terminal and the second terminal satisfies the requirement from the first communication path to the second terminal.
  • address indication information is sent to the second terminal, and the address indication information is used to indicate using the session address under the first communication path under the second communication path; the communication module is configured to be based on The session address under the first communication path communicates with the second terminal through the second communication path.
  • a path conversion device which is provided in a second terminal and includes: a receiving module configured to receive address indication information sent by the first terminal, where the address indication information is used to indicate that in the second communication The session address under the first communication path is used under the path; the communication module is configured to communicate with the first terminal through the second communication path based on the session address under the first communication path.
  • a path conversion device including: a memory; and a processor coupled to the memory, the processor being configured to perform any of the above based on instructions stored in the memory.
  • a path conversion method according to an embodiment.
  • a path conversion system including: a first terminal configured such that communication between the first terminal and the second terminal satisfies a path from the first communication path to the second communication path.
  • address indication information is sent to the second terminal, and the address indication information is used to indicate using the session address under the first communication path under the second communication path; the second terminal is configured to receive the After receiving the address indication information, communication is performed with the first terminal through the second communication path based on the session address under the first communication path.
  • the first terminal is further configured to discover the second terminal before sending the address indication information to the second terminal.
  • the first terminal discovering the second terminal includes: the first terminal sends a discovery request to the application server; and the application server determines according to the discovery request that the terminal that previously communicated with the first terminal through the first communication path is The second terminal; the application server sends first terminal indication information to the first terminal, where the first terminal indication information is used to indicate that the terminal that previously communicated with the first terminal through the first communication path is the second terminal.
  • the first terminal discovering the second terminal further includes: the application server sends second terminal indication information to the second terminal, where the second terminal indication information is used to indicate the previous communication with the second terminal through the first communication path.
  • the terminal through which the terminal communicates is the first terminal.
  • the first terminal is further configured to send a path conversion indication message to the second terminal, wherein the path conversion indication message is used to indicate conversion from the first communication path to the second communication path; the second terminal , is further configured to, after receiving the path conversion instruction message, send a path conversion response message corresponding to the path conversion instruction message to the first terminal.
  • At least one of the first terminal and the second terminal is further configured to: after converting the first communication path to the second communication path, release the session under the first communication path or stop it. Use the radio bearer of the session under the first communication path.
  • a computer-storable medium on which computer program instructions are stored.
  • the instructions are executed by a processor, the path conversion method described in any of the above embodiments is implemented.
  • a computer program including instructions that, when executed by a processor, cause the processor to perform the path conversion method as described above.
  • Figure 1a is a path conversion architecture diagram according to some embodiments of the present disclosure
  • Figure 1b is a schematic diagram of the mapping relationship between services and PC5 links between terminals according to some embodiments of the present disclosure
  • Figure 2 is a flowchart illustrating a path conversion method according to some embodiments of the present disclosure
  • Figure 3 is a flowchart illustrating a path conversion method according to other embodiments of the present disclosure.
  • Figure 4 is a flowchart illustrating establishing a second communication path according to some embodiments of the present disclosure
  • Figure 5 is a flowchart illustrating a path conversion method according to still some embodiments of the present disclosure
  • Figure 6 is a block diagram illustrating a path conversion device according to some embodiments of the present disclosure.
  • Figure 7 is a block diagram illustrating a path conversion device according to other embodiments of the present disclosure.
  • Figure 8 is a schematic diagram showing the composition of a path conversion system according to some embodiments of the present disclosure.
  • Figure 9 is a block diagram illustrating a path conversion device according to still some embodiments of the present disclosure.
  • Figure 10 is a block diagram illustrating a computer system for implementing some embodiments of the present disclosure.
  • any specific values are to be construed as illustrative only and not as limiting. Accordingly, other examples of the exemplary embodiments may have different values.
  • the present disclosure proposes a path conversion method, device and system, which can ensure the continuity of the session during path conversion and minimize the impact of path conversion on business services.
  • Figure 1a is a path conversion architecture diagram according to some embodiments of the present disclosure. As shown in Figure 1a, terminal A and terminal B can communicate through path 110 or path 120.
  • Path 110 is a communication path through the mobile communication network.
  • terminal A communicates with terminal B through the Uu interface shown in Figure 1a, the access network on the terminal A side, the core network, the data network, and the access network on the terminal B side.
  • the Uu interface is the interface between the terminal and the base station. It can be called a wireless interface or an air interface. Traffic transmitted between terminals through the Uu interface needs to pass through the core network.
  • Path 120 is the communication path through the direct communication interface.
  • terminal A communicates with terminal B through the PC5 interface.
  • the PC5 interface is an interface for direct communication between two terminals. The traffic transmitted between terminals through the PC5 interface does not pass through the core network.
  • Figure 1b is a schematic diagram of the mapping relationship between services and PC5 links between terminals according to some embodiments of the present disclosure.
  • one or more PC5 unicast links can be established between two terminals.
  • Different services can correspond to different PC5 unicast links or the same PC5 unicast link.
  • FIG. 1b there are two PC5 unicast links between the first terminal and the second terminal.
  • service A and service B in the first terminal and the second terminal correspond to the same PC5 unicast link.
  • This link can be represented by a pair of application layer identifiers application layer identifier 1 and application layer identifier 2.
  • the first terminal and Service C and service D in the second terminal correspond to the same PC5 unicast link, and the link can be represented by a pair of application layer identifiers, application layer identifier 3 and application layer identifier 4.
  • Figure 2 is a flowchart illustrating a path conversion method according to some embodiments of the present disclosure. As shown in Figure 2, the path conversion method in this embodiment of the present disclosure includes:
  • Step S210 When the communication between the first terminal and the second terminal satisfies the path conversion triggering condition from the first communication path to the second communication path, the first terminal sends address indication information to the second terminal.
  • the first terminal and the second terminal communicate through the first communication path. After the path conversion triggering condition from the first communication path to the second communication path is satisfied, the first terminal sends the address indication information to the second terminal.
  • the first communication path is a communication path based on a direct-connect communication interface and the second communication path is a communication path through the mobile network.
  • the first communication path is a path for direct communication through the PC5 interface
  • the second communication path is a path for communication through the Uu interface.
  • the first communication path is a communication path through the mobile network
  • the second communication path is a communication path based on a direct communication interface.
  • the first communication path is a communication path through the Uu interface
  • the second communication path is a communication path through the PC5 interface.
  • the path conversion triggering condition is: the first terminal receives a path conversion instruction sent by the application server.
  • the first terminal receives a path conversion instruction sent by a Proximity Services (Proximity Services, Prose for short) application server.
  • Proximity Services Proximity Services, Prose for short
  • the path conversion triggering condition is: the first terminal automatically triggers. For example, when the first terminal detects that the distance between the two terminals is less than a preset threshold, the first terminal triggers path conversion. For another example, the first terminal triggers path conversion when it needs to offload traffic from the network.
  • the path conversion triggering condition is: the first terminal receives a path conversion instruction sent by the core network element.
  • the first terminal receives the path conversion instruction sent by the 5G core network element.
  • the address indication information is used to indicate using the session address under the first communication path under the second communication path.
  • the session address under the first communication path is the address of a protocol data unit (Protocol Data Unit, PDU) session.
  • PDU Protocol Data Unit
  • the address of the PDU session The types are also different.
  • the data type of the PDU session can also be an Ethernet type or an unstructured type.
  • the PDU session address can also be other types besides the IP address.
  • the address indication information includes: information indicating the use of a session address corresponding to a previously specified proximity service.
  • the first terminal sends address indication information to instruct the second terminal to use the PDU session address corresponding to service A under the previous first communication path.
  • Step S220 The first terminal communicates with the second terminal through the second communication path based on the session address under the first communication path.
  • step S220 includes: the first terminal sends service data to the second terminal through the second communication path based on the session address under the first communication path.
  • step S220 includes: the first terminal receives the service data sent by the second terminal through the second communication path based on the session address under the first communication path.
  • the communication path is converted from the first communication path to the third communication path.
  • the first terminal uses the previous IP address of the second terminal as the destination address and sends service data to the second terminal through the PC5 link; or, the first terminal receives the service data sent by the second terminal through the PC5 link.
  • the second terminal uses the IP address of the first terminal under the previous communication path based on the Uu interface as the destination address.
  • the two terminals can still use the previous communication path under the first communication path after switching to the second communication path. session address, thereby ensuring session continuity during path conversion and minimizing the impact of path conversion on business services. Moreover, by using the previous session address under the first communication path, the signaling overhead caused by configuring the session address for the second communication path is reduced, and the path conversion process is optimized.
  • FIG. 3 is a flowchart illustrating a path conversion method according to other embodiments of the present disclosure. As shown in Figure 3, the path conversion method in this embodiment of the present disclosure includes:
  • Step S310 The first terminal determines that the path conversion triggering condition is met.
  • step S310 includes: the first terminal receives a path conversion instruction sent by the application server.
  • the first terminal receives a Proximity Services (Proximity Services, Prose for short) application server The path conversion command sent.
  • Proximity Services Proximity Services, Prose for short
  • step S310 includes: the first terminal automatically triggers path conversion when detecting that the distance between the two terminals is less than a preset threshold; or, the first terminal automatically triggers path conversion when it needs to offload traffic from the network. Path conversion; alternatively, the first terminal automatically triggers path conversion when detecting that other preset conditions are met.
  • Step S320 The first terminal establishes a second communication path with the second terminal.
  • the first terminal sends address indication information to the second terminal, the address indication information is used to indicate the use of the second communication path.
  • the session address under the first communication path For example, after security is established, the first terminal and the second terminal send IP address indication information if the session is an IP communication type.
  • the second communication path is a communication path through the mobile network.
  • the address indication information is sent to the second terminal during the first terminal establishing a communication path through the mobile network.
  • the second communication path is a communication path based on a direct communication interface.
  • the address indication information is sent to the second terminal.
  • Step S330 The first terminal sends a path conversion instruction message to the second terminal.
  • step S330 is performed during the first terminal establishing the second communication path.
  • step S330 is performed after the first terminal establishes the second communication path.
  • the path conversion indication message includes at least one of the following: a path conversion direction, and indication information that traffic is no longer transmitted through the first communication path.
  • Step S340 The first terminal receives the path conversion response message sent by the second terminal.
  • the second terminal by sending a path conversion instruction message to the second terminal, the second terminal can be switched to the second communication path in time at an appropriate time, thus optimizing the path conversion process.
  • Step S350 The first terminal communicates with the second terminal through the second communication path based on the session address under the first communication path.
  • the first terminal after receiving the path switching response message, switches the communication path with the second terminal to the second communication path.
  • step S350 includes: the first terminal, based on the session address under the first communication path, Send service data to the second terminal through the second communication path.
  • step S350 includes: the first terminal receives the service data sent by the second terminal through the second communication path based on the session address under the first communication path.
  • the two terminals can still use the previous session address under the first communication path after switching to the second communication path, thereby ensuring the continuity of the session during path switching and minimizing the Impact of path transformation on business services. Moreover, by sending address indication information to the second terminal during the process of establishing the second communication path, there is no need to perform cumbersome address configuration operations between terminals, reducing the signaling overhead in the process of establishing the second communication path, and further optimizing the path. Conversion processing flow.
  • Figure 4 is a flowchart illustrating establishing a second communication path according to some embodiments of the present disclosure.
  • the embodiment of the present disclosure is an exemplary explanation of step S320 in the path conversion process shown in FIG. 3 .
  • the process of establishing the second communication path according to the embodiment of the present disclosure includes:
  • Step 410 The first terminal sends a direct communication request to the second terminal.
  • the second communication path is a PC5 unicast link.
  • the first terminal sends a Proximity Service Direct Communication Request (Prose Direct Link Establishment Request Message) to the second terminal.
  • Proximity Service Direct Communication Request Prose Direct Link Establishment Request Message
  • the method before step 410, further includes: the first terminal uses a designated service previously communicated through the first communication path as a service to be switched, and establishes a second communication path for the designated service.
  • the first terminal uses service A and service B shown in Figure 1b as services to be switched, and establishes a PC5 link for these two services.
  • the method before step 410, the method further includes: the second terminal determines a target L2 layer identifier for signaling reception.
  • Step 420 The first terminal sends a direct link security mode command message to the second terminal.
  • the second communication path is a PC5 unicast link.
  • the first terminal sends a Proximity Service Direct Link Security Mode Command Message (Prose Direct Link Security Mode Command Message) to the second terminal.
  • Proximity Service Direct Link Security Mode Command Message Proximity Service Direct Link Security Mode Command Message
  • the direct link security mode command message includes address indication information.
  • the address indication information is used to indicate using the session address under the first communication path under the second communication path.
  • Step 430 The second terminal sends a direct link security mode completion message to the first terminal.
  • the second communication path is a PC5 unicast link.
  • the second terminal sends a Proximity Service Direct Link Security Mode Complete message (Prose Direct Link Security Mode Complete Message).
  • the direct link security mode completion message does not include the address configuration information of the second terminal.
  • the direct link security mode completion message does not include the following address configuration information: DHCPv4 server (DHCPv4server).
  • Step 440 The second terminal sends a direct communication acceptance message to the first terminal.
  • the second communication path is a PC5 unicast link.
  • the second terminal sends Proximity Service Direct Link Establishment Accept Messages (Prose Direct Link Establishment Accept Messages) to the first terminal.
  • the second communication path establishment process can be simplified and the signaling overhead in the process of establishing the second communication path can be reduced.
  • the two terminals can still use the previous session address under the first communication path after switching to the second communication path, thereby ensuring the continuity of the session during path switching. to minimize the impact of path conversion on business services.
  • FIG. 5 is a flowchart illustrating a path conversion method according to still some embodiments of the present disclosure. As shown in Figure 5, the path conversion method according to the embodiment of the present disclosure includes:
  • Step 510 The application server assists in executing the terminal discovery process.
  • steps 510 to 560 are performed.
  • step 510 includes: the first terminal sends a discovery request to the application server; the application server determines that the terminal that previously communicated with the first terminal through the first communication path is the second terminal according to the discovery request; then, the application server sends The first terminal indicates information to the first terminal, and the first terminal indication information is used to indicate that the terminal that previously communicated with the first terminal through the first communication path is the second terminal; next, the first terminal may execute a command for the second terminal. discovery process.
  • step 510 may further include: the application server sending second terminal indication information to the second terminal, where the second terminal indication information is used to indicate that the terminal that previously communicated with the second terminal through the first communication path is The first terminal is to assist the subsequent process of the first terminal discovering the second terminal.
  • the first terminal may also determine which of the multiple terminals is the second terminal with the assistance of the application server after discovering multiple terminals.
  • the discovery request sent by the first terminal includes the terminal identification of the first terminal.
  • the terminal identification includes at least one of the following: application layer identification (application layer ID), L2 layer identification (L2ID), and proximity service discovery terminal identification (ProSe Discovery UE ID).
  • the application server determines whether it has also received the discovery request from the second terminal within the preset time; if so, based on the identification of the first terminal carried in the discovery request, and The identification of the second terminal, determine whether the two terminals are the two terminals that previously communicated through the first communication path; if so, send the first terminal indication information to the first terminal, and send the second terminal indication information to the second terminal .
  • the application server determines the identity of the first terminal according to the discovery request, and queries the PDU session information under the first communication path according to the identity of the first terminal; if the query result If it indicates that the first terminal has previously communicated with the second terminal, the first terminal indication information is sent to the first terminal.
  • the method before step 510, further includes: the first terminal and the second terminal respectively complete the authorization of the proximity service and receive the policy information issued by the proximity service application server; the first terminal and the second terminal respectively establish a PDU session. , and communicate via mobile networks.
  • the policy information delivered by the proximity service application server includes: the policy of whether path conversion can be performed, and the interface priority during path conversion, etc.
  • Step 520 The first terminal establishes a PC5 connection with the second terminal.
  • the first terminal and the second terminal send address indication information to the second terminal during the process of establishing a PC5 connection (or PC5 link, or a communication path based on the PC5 interface).
  • the address indication information is used to indicate that the second terminal used the PDU session address when communicating with the first terminal through the wireless access network before being connected to PC5.
  • Step 530 The first terminal sends a path conversion instruction to the second terminal.
  • Step 540 The second terminal sends a path conversion response to the first terminal.
  • Step 550 The first terminal releases the PDU session or deactivates the radio bearer of the PDU session.
  • the first terminal releases the PDU session of the specified service under the first communication path, or deactivates the radio bearer of the PDU session.
  • Step 560 The second terminal releases the PDU session or deactivates the radio bearer of the PDU session.
  • the second terminal releases the PDU session of the specified service under the first communication path, or deactivates the radio bearer of the PDU session.
  • the first terminal or the second terminal may also reserve the PDU session and corresponding resources under the first communication path.
  • the above steps can ensure the continuity of the session during path conversion and minimize the impact of path conversion on business services. At the same time, it can simplify the PC5 connection establishment process and reduce the signaling overhead in establishing a PC5 connection.
  • Figure 6 is a block diagram illustrating a path conversion device according to some embodiments of the present disclosure.
  • the path conversion device 600 according to the embodiment of the present disclosure is provided on the first terminal and includes: a sending module 610 and a communication module 620 .
  • the sending module 610 is configured to send the address indication information to the second terminal when the communication between the first terminal and the second terminal satisfies the path conversion triggering condition from the first communication path to the second communication path.
  • the first communication path is a communication path based on a direct-connect communication interface and the second communication path is a communication path through the mobile network.
  • the first communication path is a path for direct communication through the PC5 interface
  • the second communication path is a path for communication through the Uu interface.
  • the first communication path is a communication path through the mobile network
  • the second communication path is a communication path based on a direct communication interface.
  • the first communication path is a communication path through the Uu interface
  • the second communication path is a communication path through the PC5 interface.
  • the address indication information is used to indicate using the session address under the first communication path under the second communication path.
  • the session address under the first communication path is the address of a protocol data unit (Protocol Data Unit, PDU) session.
  • PDU Protocol Data Unit
  • the address type of the PDU session is also different depending on the data type of the PDU session.
  • the data type of the PDU session can also be an Ethernet type or an unstructured type.
  • the PDU session address can also be other types besides the IP address.
  • the address indication information includes: information indicating the use of a session address corresponding to a previously specified proximity service.
  • the first terminal sends address indication information to instruct the second terminal to use the PDU session address corresponding to service A under the previous first communication path.
  • the communication module 620 is configured to communicate with the second terminal through the second communication path based on the session address under the first communication path.
  • the communication module 620 sends service data to the second terminal through the second communication path based on the session address under the first communication path.
  • the communication module 620 receives the service data sent by the second terminal through the second communication path based on the session address under the first communication path.
  • two terminals can still use the session address under the previous first communication path after switching to the second communication path, thereby ensuring the continuity of the session when performing path switching, as much as possible. Reduce the impact of path transitions on business services. Moreover, by using the previous session address under the first communication path, the signaling overhead caused by configuring the session address for the second communication path is reduced, and the path conversion process is optimized.
  • FIG. 7 is a block diagram illustrating a path conversion device according to other embodiments of the present disclosure.
  • the path conversion device 700 according to the embodiment of the present disclosure is provided on the second terminal and includes: a receiving module 710 and a communication module 720 .
  • the receiving module 710 is configured to receive the address indication information sent by the first terminal.
  • the address indication information is used to indicate using the session address under the first communication path under the second communication path.
  • the first terminal sends the address indication information to the second terminal when the communication between the first terminal and the second terminal satisfies a path conversion trigger condition from the first communication path to the second communication path. Based on the address indication information, the second terminal can know that after switching to the second communication path, data transmission will be performed with the first terminal based on the previous session address.
  • the communication module 720 is configured to communicate with the first terminal through the second communication path based on the session address under the first communication path.
  • the communication module 720 sends service data to the first terminal through the second communication path based on the session address under the first communication path.
  • the communication module 720 receives the service data sent by the first terminal through the second communication path based on the session address under the first communication path.
  • the above device can enable two terminals to still use the previous session address under the first communication path after switching to the second communication path, thereby ensuring the continuity of the session during path switching and minimizing the Impact of path transformation on business services. Moreover, by using the previous session address under the first communication path, the signaling overhead caused by configuring the session address for the second communication path is reduced, and the path conversion process is optimized.
  • Figure 8 is a schematic diagram showing the composition of a path conversion system according to some embodiments of the present disclosure.
  • the path conversion system according to the embodiment of the present disclosure includes: a first terminal 810 , a second terminal 820 , and an application server 830 .
  • the first terminal 810 is configured to discover the second terminal.
  • the first terminal 810 discovering the second terminal 820 includes: the first terminal 810 sending a discovery request to the application server 830; the application server 830 determines a terminal that previously communicated with the first terminal through the first communication path according to the discovery request. Be the second terminal 820; the application server 830 sends the first terminal indication information to the first terminal 810. The first terminal indication information is used to indicate that the terminal that previously communicated with the first terminal through the first communication path is the second terminal.
  • discovering the second terminal 820 by the first terminal 810 may also include: the application server 830 sending the second terminal indication information to the second terminal 820, the second terminal indication information being used to indicate the previous Communication Path The terminal communicating with the second terminal is the first terminal.
  • the first terminal 810 is further configured to send address indication information to the second terminal 820 when the communication between the first terminal and the second terminal satisfies the path conversion trigger condition from the first communication path to the second communication path.
  • the address indication information is used to indicate using the session address under the first communication path under the second communication path.
  • the first terminal sends address indication information to the second terminal 820 during the process of establishing the second communication path with the second terminal.
  • the first terminal 810 is further configured to send a path conversion instruction message to the second terminal 820.
  • the path conversion instruction message is used to indicate conversion from the first communication path to the second communication path.
  • the second terminal 820 is configured to send a path conversion response message to the first terminal 810 after receiving the path conversion instruction message.
  • the first terminal 810 and the second terminal 820 are further configured to communicate through the second communication path based on the session address under the first communication path.
  • At least one of the first terminal 810 and the second terminal 820 is further configured to: after converting the first communication path to the second communication path, release or deactivate the session under the first communication path.
  • the radio bearer of the session under the first communication path is further configured to: after converting the first communication path to the second communication path, release or deactivate the session under the first communication path. The radio bearer of the session under the first communication path.
  • the above system can enable two terminals to still use the previous session address under the first communication path after switching to the second communication path, thereby ensuring the continuity of the session during path switching and minimizing the Impact of path transformation on business services. Moreover, by using the previous session address under the first communication path, the signaling overhead caused by configuring the session address for the second communication path is reduced, and the path conversion process is optimized.
  • FIG. 9 is a block diagram illustrating a path conversion device according to still some embodiments of the present disclosure.
  • the path conversion device 900 includes a memory 910; and a processor 920 coupled to the memory 910.
  • the memory 910 is used to store instructions for executing corresponding embodiments of the path conversion method.
  • the processor 920 is configured to perform the path conversion method in any embodiments of the present disclosure based on instructions stored in the memory 710 .
  • Figure 10 is a block diagram illustrating a computer system for implementing some embodiments of the present disclosure.
  • Computer system 1000 may be embodied in the form of a general purpose computing device.
  • Computer system 1000 includes memory 1010, a processor 1020, and a bus 1030 that connects various system components.
  • the memory 1010 may include, for example, system memory, non-volatile storage media, and the like.
  • the system memory stores, for example, an operating system, application programs, a boot loader, and other programs.
  • System memory may include volatile storage media such as random access memory (RAM) and/or cache memory.
  • RAM random access memory
  • the non-volatile storage medium stores, for example, instructions for executing at least one of the corresponding embodiments of determining path conversion methods. make.
  • Non-volatile storage media include but are not limited to disk storage, optical storage, flash memory, etc.
  • the processor 1020 may be implemented as a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gates or transistors and other discrete hardware components.
  • each module such as the sending module and the communication module, can be implemented by a central processing unit (CPU) running instructions in the memory to perform corresponding steps, or by a dedicated circuit that performs corresponding steps.
  • CPU central processing unit
  • Bus 1030 may use any of a variety of bus structures.
  • bus structures include, but are not limited to, Industry Standard Architecture (ISA) bus, Micro Channel Architecture (MCA) bus, and Peripheral Component Interconnect (PCI) bus.
  • ISA Industry Standard Architecture
  • MCA Micro Channel Architecture
  • PCI Peripheral Component Interconnect
  • the computer system 1000 may also include an input/output interface 1040, a network interface 1050, a storage interface 1060, and the like. These interfaces 1040, 1050, 1060, the memory 1010 and the processor 1020 may be connected through a bus 1030.
  • the input and output interface 1040 can provide a connection interface for input and output devices such as a monitor, mouse, and keyboard.
  • Network interface 1050 provides connection interfaces for various networked devices.
  • the storage interface 1060 provides a connection interface for external storage devices such as floppy disks, USB disks, and SD cards.
  • These computer readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable device to produce a machine, such that execution of the instructions by the processor produces implementations in one or more blocks of the flowcharts and/or block diagrams.
  • a device with specified functions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable device to produce a machine, such that execution of the instructions by the processor produces implementations in one or more blocks of the flowcharts and/or block diagrams.
  • Computer-readable program instructions which may also be stored in computer-readable memory, cause the computer to operate in a specific manner to produce an article of manufacture, including implementing the functions specified in one or more blocks of the flowcharts and/or block diagrams. instructions.
  • the disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment that combines software and hardware aspects.
  • the continuity of the session can be ensured during path conversion and the impact of path conversion on business services can be minimized.

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Abstract

本公开涉及一种路径转换方法、装置和系统，涉及信息通信技术领域。其中，该方法包括：在第一终端与第二终端之间的通信满足从第一通信路径到第二通信路径的路径转换触发条件的情况下，第一终端向第二终端发送地址指示信息，地址指示信息用于指示在第二通信路径下使用第一通信路径下的会话地址；第一终端基于第一通信路径下的会话地址，通过第二通信路径，与第二终端进行通信。通过以上方法，能够在进行路径转换时保证会话的连续性，尽量减少路径转换对业务服务的影响。

Description

路径转换方法、装置和系统
相关申请的交叉引用
本申请是以CN申请号为202210921149.8，申请日为2022年8月2日的申请为基础，并主张其优先权，该CN申请的公开内容在此作为整体引入本申请中。
技术领域
本公开涉及信息通信技术领域，特别涉及一种路径转换方法、装置和系统。
背景技术
终端之间可通过基于移动通信网络接口(例如Uu接口)的通信路径进行通信，也可通过基于直连通信接口(例如PC5接口)的通信路径进行通信。
在某些场景下，比如当终端之间的距离发生变化时，需要进行通信路径转换。
发明内容
本公开提出了一种路径转换方法、装置和系统。
根据本公开的一个方面，提供了一种路径转换方法，包括：在第一终端与第二终端之间的通信满足从第一通信路径到第二通信路径的路径转换触发条件的情况下，第一终端向第二终端发送地址指示信息，地址指示信息用于指示在第二通信路径下使用第一通信路径下的会话地址；第一终端基于第一通信路径下的会话地址，通过第二通信路径，与第二终端进行通信。
在一些实施例中，还包括：第一终端建立与第二终端之间的第二通信路径，其中，所述第一终端向第二终端发送地址指示信息是在建立与第二终端的第二通信路径过程中执行。
在一些实施例中，第一通信路径为基于直连通信接口的通信路径、且第二通信路径为通过移动网络的通信路径；或者，第一通信路径为通过移动网络的通信路径、且第二通信路径为基于直连通信接口的通信路径。
在一些实施例中，第一通信路径为基于Uu接口的通信路径，第二通信路径为基于PC5接口的通信路径。
在一些实施例中，所述第一终端向第二终端发送地址指示信息包括：向第二终端 发送直接链路安全模式命令消息，其中，所述直接链路安全模式命令消息包括所述地址指示信息。
在一些实施例中，第一终端建立与第二终端之间的第二通信路径还包括：在向第二终端发送直接链路安全模式命令消息之前，发送直接通信请求至第二终端；在向第二终端发送直接链路安全模式命令消息之后，接收所述第二终端发送的直接链路安全模式完成消息和直接通信接受消息。
在一些实施例中，所述直接链路安全模式完成消息不包括第二终端的地址配置信息。
在一些实施例中，所述第一通信路径下的会话地址包括：协议数据单元PDU会话的地址。
在一些实施例中，所述路径转换触发条件包括：第一终端接收到应用服务器发送的路径转换指令；或者，第一终端自动触发。
在一些实施例中，还包括：在第一终端向第二终端发送地址指示信息之前，第一终端发送发现请求至应用服务器；第一终端接收所述应用服务器发送的第一终端指示信息，所述第一终端指示信息用于指示先前通过第一通信路径与第一终端进行通信的终端为第二终端。
在一些实施例中，所述发现请求包括第一终端的标识。
在一些实施例中，还包括：第一终端发送路径转换指示消息至第二终端，其中，所述路径转换指示消息用于指示第二终端将第一通信路径转换至第二通信路径。
在一些实施例中，还包括：第一终端接收第二终端发送的对应于所述路径转换指示消息的路径转换响应消息。
在一些实施例中，还包括：在将第一通信路径转换至第二通信路径后，第一终端释放第一通信路径下的会话或者停用第一通信路径下的会话的无线承载。
在一些实施例中，所述路径转换指示消息包括以下至少一项：路径转换方向、以及不再通过第一通信路径传输流量的指示信息。
根据本公开的第二方面，提供了另一种路径转换方法，包括：第二终端接收第一终端发送的地址指示信息，地址指示信息用于指示在第二通信路径下使用第一通信路径下的会话地址；第二终端基于第一通信路径下的会话地址，通过第二通信路径，与第一终端进行通信。
根据本公开的第三方面，提供了再一种路径转换方法，由第一终端执行，包括： 确定满足从第一通信路径到第二通信路径的路径转换触发条件；在应用服务器辅助下发现第二终端，所述第二终端为先前通过所述第一通信路径与第一终端进行通信的终端；与所述第二终端建立所述第二通信路径。
在一些实施例中，所述在应用服务器辅助下发现第二终端包括：发送发现请求至应用服务器；接收所述应用服务器发送的第一终端指示信息，所述第一终端指示信息用于指示先前通过第一通信路径与所述第一终端进行通信的终端为所述第二终端。
根据本公开的第四方面，提供了一种路径转换装置，设置于第一终端，包括：发送模块，被配置为在第一终端与第二终端之间的通信满足从第一通信路径到第二通信路径的路径转换触发条件的情况下，向第二终端发送地址指示信息，地址指示信息用于指示在第二通信路径下使用第一通信路径下的会话地址；通信模块，被配置为基于第一通信路径下的会话地址，通过第二通信路径，与第二终端进行通信。
根据本公开的第五方面，提供了一种路径转换装置，设置于第二终端，包括：接收模块，被配置为接收第一终端发送的地址指示信息，地址指示信息用于指示在第二通信路径下使用第一通信路径下的会话地址；通信模块，被配置为基于第一通信路径下的会话地址，通过第二通信路径，与第一终端进行通信。
根据本公开的第六方面，提供了一种路径转换装置，包括：存储器；以及耦接至所述存储器的处理器，所述处理器被配置为基于存储在所述存储器的指令，执行上述任一实施例所述的路径转换方法。
根据本公开的第七方面，提供了一种路径转换系统，包括：第一终端，被配置为在第一终端与第二终端之间的通信满足从第一通信路径到第二通信路径的路径转换触发条件的情况下，向第二终端发送地址指示信息，地址指示信息用于指示在第二通信路径下使用第一通信路径下的会话地址；第二终端，被配置为在接收到所述地址指示信息后，基于第一通信路径下的会话地址，通过第二通信路径，与第一终端进行通信。
在一些实施例中，第一终端还被配置为在向第二终端发送地址指示信息之前，发现第二终端。
在一些实施例中，所述第一终端发现第二终端包括：第一终端向应用服务器发送发现请求；应用服务器根据所述发现请求确定先前通过第一通信路径与第一终端进行通信的终端为第二终端；应用服务器发送第一终端指示信息至第一终端，所述第一终端指示信息用于指示先前通过第一通信路径与第一终端进行通信的终端为第二终端。
在一些实施例中，所述第一终端发现第二终端还包括：应用服务器发送第二终端指示信息至第二终端，所述第二终端指示信息用于指示先前通过第一通信路径与第二终端进行通信的终端为第一终端。
在一些实施例中，第一终端，还被配置为发送路径转换指示消息至第二终端，其中，所述路径转换指示消息用于指示由第一通信路径转换至第二通信路径；第二终端，还被配置为在接收到所述路径转换指示消息后，向第一终端发送对应于所述路径转换指示消息的路径转换响应消息。
在一些实施例中，所述第一终端和所述第二终端中的至少一个还被配置为：在将第一通信路径转换至第二通信路径后，释放第一通信路径下的会话或者停用第一通信路径下的会话的无线承载。
根据本公开的第八方面，提供了一种计算机可存储介质，其上存储有计算机程序指令，该指令被处理器执行时实现上述任一实施例所述的路径转换方法。
根据本公开的第九方面，提供了一种计算机程序，包括：指令，所述指令当由处理器执行时使所述处理器执行如前所述的路径转换方法。
附图说明
构成说明书的一部分的附图描述了本公开的实施例，并且连同说明书一起用于解释本公开的原理。
参照附图，根据下面的详细描述，可以更加清楚地理解本公开，其中：
图1a是根据本公开一些实施例的路径转换架构图；
图1b是根据本公开一些实施例的终端之间服务与PC5链路的映射关系示意图；
图2是示出根据本公开一些实施例的路径转换方法的流程图；
图3是示出根据本公开另一些实施例的路径转换方法的流程图；
图4是示出根据本公开一些实施例的建立第二通信路径的流程图；
图5是示出根据本公开再一些实施例的路径转换方法的流程图；
图6是示出根据本公开一些实施例的路径转换装置的框图；
图7是示出根据本公开另一些实施例的路径转换装置的框图；
图8是示出根据本公开一些实施例的路径转换系统的组成架构示意图；
图9是示出根据本公开再一些实施例的路径转换装置的框图；
图10是示出用于实现本公开一些实施例的计算机系统的框图。
具体实施方式
现在将参照附图来详细描述本公开的各种示例性实施例。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本公开的范围。
同时，应当明白，为了便于描述，附图中所示出的各个部分的尺寸并不是按照实际的比例关系绘制的。
以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本公开及其应用或使用的任何限制。
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论，但在适当情况下，所述技术、方法和设备应当被视为说明书的一部分。
在这里示出和讨论的所有示例中，任何具体值应被解释为仅仅是示例性的，而不是作为限制。因此，示例性实施例的其它示例可以具有不同的值。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步讨论。
在某些场景下，需要对终端之间的通信路径进行转换。如何对通信路径转换进行优化是一个亟待解决的问题。
针对该问题，本公开提出了一种路径转换方法、装置和系统，能够在进行路径转换时保证会话的连续性，尽量减少路径转换对业务服务的影响。
图1a是根据本公开一些实施例的路径转换架构图。如图1a所示，终端A与终端B可通过路径110或路径120进行通信。
路径110为通过移动通信网络的通信路径。例如，终端A通过图1a所示的Uu接口、终端A侧的接入网、核心网、数据网、终端B侧的接入网，与终端B进行通信。Uu接口是终端与基站之间的接口，可称为无线接口或者空中接口，终端之间通过Uu接口传输的流量需要经过核心网。
路径120为通过直接通信接口的通信路径。例如，终端A通过PC5接口与终端B进行通信。PC5接口是两个终端之间直接通信的接口，终端之间通过PC5接口传输的流量不经过核心网。
图1b是根据本公开一些实施例的终端之间服务与PC5链路的映射关系示意图。
在本公开实施例中，两个终端之间可建立一条或多条PC5单播链路，不同业务 (或者说服务)可对应不同的PC5单播链路，也可对应同一个PC5单播链路。
例如，如图1b所示，第一终端与第二终端存在两条PC5单播链路。其中，第一终端和第二终端中的服务A与服务B对应同一个PC5单播链路，该链路可用应用层标识1、应用层标识2这一对应用层标识表示，第一终端和第二终端中的服务C与服务D对应同一个PC5单播链路，该链路可用应用层标识3、应用层标识4这一对应用层标识表示。
图2是示出根据本公开一些实施例的路径转换方法的流程图。如图2所示，本公开实施例的路径转换方法包括：
步骤S210：在第一终端与第二终端之间的通信满足从第一通信路径到第二通信路径的路径转换触发条件的情况下，第一终端向第二终端发送地址指示信息。
在步骤S210之前，第一终端与第二终端通过第一通信路径进行通信。在满足从第一通信路径到第二通信路径的路径转换触发条件后，第一终端向第二终端发送地址指示信息。
在一些实施例中，第一通信路径为基于直连通信接口的通信路径、且第二通信路径为通过移动网络的通信路径。例如，第一通信路径为通过PC5接口进行直接通信的路径，第二通信路径为通过Uu接口进行通信的路径。
在另一些实施例中，第一通信路径为通过移动网络的通信路径、且第二通信路径为基于直连通信接口的通信路径。例如，第一通信路径为通过Uu接口进行通信的路径，第二通信路径为通过PC5接口进行通信的路径。
在一些实施例中，路径转换触发条件为：第一终端接收到应用服务器发送的路径转换指令。例如，第一终端接收到邻近服务(Proximity Services，简称Prose)应用服务器发送的路径转换指令。
在另一些实施例中，路径转换触发条件为：第一终端自动触发。例如，第一终端在检测到两个终端间的距离小于预设阈值时，触发路径转换。又例如，第一终端在需要从网络上卸载流量时，触发路径转换。
在再一些实施例中，路径转换触发条件为：第一终端接收到核心网网元发送的路径转换指令。例如，第一终端接收到5G核心网网元发送的路径转换指令。
其中，地址指示信息用于指示在第二通信路径下使用第一通信路径下的会话地址。
在一些实施例中，第一通信路径下的会话地址为协议数据单元(Protocol Data Unit，PDU)会话的地址。具体实施时，根据PDU会话的数据类型不同，PDU会话的地址 类型也不同。例如，当PDU会话的数据类型为IP类型时，PDU会话的地址为IP地址。此外，PDU会话的数据类型还可以是以太网类型或者无结构类型，相应地，PDU会话地址也可以是除IP地址以外的其他类型。
在一些实施例中，地址指示信息包括：指示使用先前指定邻近服务对应的会话地址的信息。例如，第一终端发送地址指示信息以指示第二终端使用先前第一通信路径下服务A对应的PDU会话地址。
步骤S220：第一终端基于第一通信路径下的会话地址，通过第二通信路径，与第二终端进行通信。
在第一终端将第一通信路径转换至第二通信路径后，基于第一通信路径下的会话地址，与第二终端进行数据传输。
在一些实施例中，步骤S220包括：第一终端，基于第一通信路径下的会话地址，通过第二通信路径，发送业务数据至第二终端。
在一些实施例中，步骤S220包括：第一终端，基于第一通信路径下的会话地址，通过第二通信路径，接收第二终端发送的业务数据。
例如，当第一通信路径为通过Uu接口进行通信的路径、第二通信路径为通过PC5接口进行通信的路径(或称为PC5链路)时，在将通信路径由第一通信路径转换至第二通信路径后，第一终端将先前第二终端的IP地址作为目的地址，通过PC5链路，向第二终端发送业务数据；或者，第一终端通过PC5链路接收第二终端发送的业务数据，其中，第二终端在基于PC5链路发送业务数据时，将先前基于Uu接口的通信路径下的第一终端的IP地址作为目的地址。
在本公开实施例中，通过第一终端在满足路径转换触发条件后，向第二终端发送地址指示信息，能够使得两个终端在转换至第二通信路径后仍然使用先前第一通信路径下的会话地址，从而能够在进行路径转换时保证会话的连续性，尽量减少路径转换对业务服务的影响。而且，通过使用先前第一通信路径下的会话地址，减少了为第二通信路径配置会话地址造成的信令开销，优化了路径转换流程。
图3是示出根据本公开另一些实施例的路径转换方法的流程图。如图3所示，本公开实施例的路径转换方法包括：
步骤S310：第一终端确定满足路径转换触发条件。
在一些实施例中，步骤S310包括：第一终端接收到应用服务器发送的路径转换指令。例如，第一终端接收到邻近服务(Proximity Services，简称Prose)应用服务器 发送的路径转换指令。
在另一些实施例中，步骤S310包括：第一终端在检测到两个终端间的距离小于预设阈值时，自动触发路径转换；或者，第一终端在需要从网络上卸载流量时，自动触发路径转换；或者，第一终端在检测到满足其他预设条件时，自动触发路径转换。
步骤S320：第一终端建立与第二终端之间的第二通信路径。
其中，在第一终端建立与第二终端之间的第二通信路径过程中，还包括：第一终端向第二终端发送地址指示信息，该地址指示信息用于指示在第二通信路径下使用第一通信路径下的会话地址。例如，第一终端与第二终端在安全性建立后，如果会话为IP通信类型，发送IP地址指示信息。
在一些实施例中，第二通信路径为通过移动网络的通信路径。在这些实施例中，在第一终端建立通过移动网络的通信路径的过程中，向第二终端发送地址指示信息。
在一些实施例中，第二通信路径为基于直连通信接口的通信路径。在这些实施例中，在第一终端建立通过直连通信接口的通信路径的过程中，向第二终端发送地址指示信息。
在本公开实施例中，通过在建立第二通信路径过程中，向第二终端发送地址指示信息，使得终端间无需进行繁琐地地址配置操作，减少了建立第二通信路径过程中的信令开销，
步骤S330：第一终端发送路径转换指示消息至第二终端。
在一些实施例中，在第一终端建立第二通信路径过程中，执行步骤S330。
在另一些实施例中，在第一终端建立第二通信路径之后，执行步骤S330。
在一些实施例中，路径转换指示消息包括以下至少一项：路径转换方向、以及不再通过第一通信路径传输流量的指示信息。
步骤S340：第一终端接收第二终端发送的路径转换响应消息。
在本公开实施例中，通过向第二终端发送路径转换指示消息，能够使第二终端在恰当的时候及时切换至第二通信路径，优化了路径转换流程。
步骤S350：第一终端基于第一通信路径下的会话地址，通过第二通信路径，与第二终端进行通信。
在一些实施例中，第一终端在接收到路径转换响应消息后，将与第二终端间的通信路径切换至第二通信路径。
在一些实施例中，步骤S350包括：第一终端，基于第一通信路径下的会话地址， 通过第二通信路径，发送业务数据至第二终端。
在一些实施例中，步骤S350包括：第一终端，基于第一通信路径下的会话地址，通过第二通信路径，接收第二终端发送的业务数据。
在本公开实施例中，通过以上步骤能够使得两个终端在转换至第二通信路径后仍然使用先前第一通信路径下的会话地址，从而能够在进行路径转换时保证会话的连续性，尽量减少路径转换对业务服务的影响。而且，通过在建立第二通信路径过程中，向第二终端发送地址指示信息，使得终端间无需进行繁琐地地址配置操作，减少了建立第二通信路径过程中的信令开销，进一步优化了路径转换处理流程。
图4是示出根据本公开一些实施例的建立第二通信路径的流程图。本公开实施例是对图3所示路径转换流程中步骤S320的示例性说明。如图4所示，本公开实施例的建立第二通信路径的流程包括：
步骤410：第一终端发送直接通信请求至第二终端。
在一些实施例中，第二通信路径为PC5单播链路。在这些实施例中，第一终端向第二终端发送邻近服务直接通信请求(Prose Direct Link Establishment Request Message)。
在一些实施例中，在步骤410之前，还包括：第一终端将先前通过第一通信路径通信的指定服务作为待切换的服务，针对该指定服务建立第二通信路径。例如，第一终端将图1b所示的服务A和服务B作为待切换的服务，针对这两个服务建立PC5链路。
在一些实施例中，在步骤410之前，还包括：第二终端确定用于信令接收的目标L2层标识。
步骤420：第一终端发送直接链路安全模式命令消息至第二终端。
在一些实施例中，第二通信路径为PC5单播链路。在这些实施例中，第一终端向第二终端发送邻近服务直接链路安全模式命令消息(Prose Direct Link Security Mode Command Message)。
在一些实施例中，直接链路安全模式命令消息包括地址指示信息。其中，地址指示信息用于指示在第二通信路径下使用第一通信路径下的会话地址。
步骤430：第二终端发送直接链路安全模式完成消息至第一终端。
在一些实施例中，第二通信路径为PC5单播链路。在这些实施例中，第二终端发送邻近服务直接链路安全模式完成消息(Prose Direct Link Security Mode Complete  Message)。
在一些实施例中，直接链路安全模式完成消息不包括第二终端的地址配置信息。例如，当第二终端仅支持IPV4地址分配机制时，直接链路安全模式完成消息不包括如下地址配置信息：DHCPv4服务器(DHCPv4server)。
步骤440：第二终端发送直接通信接受消息至第一终端。
在一些实施例中，第二通信路径为PC5单播链路。在这些实施例中，第二终端发送邻近服务直接通信接受消息(Prose Direct Link Establishment Accept Messages)至第一终端。
在本公开实施例中，通过以上步骤，一方面，由于在第二通信路径过程中无需传输地址配置信息，能够简化第二通信路径建立流程，减少建立第二通信路径过程中的信令开销，另一方面，通过向第二终端发送地址指示信息，能够使得两个终端在转换至第二通信路径后仍然使用先前第一通信路径下的会话地址，从而能够在进行路径转换时保证会话的连续性，尽量减少路径转换对业务服务的影响。
图5是示出根据本公开再一些实施例的路径转换方法的流程图。如图5所示，本公开实施例的路径转换方法包括：
步骤510：应用服务器辅助执行终端发现流程。
在一些实施例中，在满足路径转换触发条件的情况下，执行步骤510至步骤560。
在一些实施例中，步骤510包括：第一终端发送发现请求至应用服务器；应用服务器根据发现请求确定先前通过第一通信路径与第一终端进行通信的终端为第二终端；然后，应用服务器发送第一终端指示信息至第一终端，该第一终端指示信息用于指示先前通过第一通信路径与第一终端进行通信的终端为第二终端；接下来，第一终端可执行针对第二终端的发现流程。
在上述一些实施例中，步骤510还可包括：应用服务器发送第二终端指示信息至第二终端，该第二终端指示信息用于指示先前通过第一通信路径与第二终端进行通信的终端为第一终端，以便于辅助后续第一终端发现第二终端的流程。
在另一些实施例中，第一终端也可在发现多个终端后，在应用服务器的辅助下确定多个终端中的哪一个是第二终端。
在一些实施例中，第一终端发送的发现请求包括第一终端的终端标识。示例性地，终端标识包括以下至少一项：应用层标识(application layer ID)、L2层标识(L2ID)、邻近服务发现终端标识(ProSe Discovery UE ID)。
在一些实施例中，应用服务器在接收到第一终端的发现请求后，判断是否在预设时间内也接收到了第二终端的发现请求；若是，根据发现请求携带的第一终端的标识、以及第二终端的标识，判断这两个终端是否为先前通过第一通信路径通信的两个终端；若是，向第一终端发送第一终端指示信息，以及，向第二终端发送第二终端指示信息。
在另一些实施例中，应用服务器在接收到第一终端的发现请求后，根据发现请求确定第一终端的标识，根据第一终端的标识查询第一通信路径下的PDU会话信息；若查询结果表明第一终端先前与第二终端进行通信，则向第一终端发送第一终端指示信息。
在一些实施例中，在步骤510之前，还包括：第一终端和第二终端分别完成邻近服务的授权以及接收邻近服务应用服务器下发的策略信息；第一终端和第二终端分别建立PDU会话，并通过移动网络进行通信。示例性地，邻近服务应用服务器下发的策略信息包括：是否可以执行路径转换的策略、以及路径转换时的接口优先级等。
步骤520：第一终端与第二终端建立PC5连接。
在一些实施例中，第一终端与第二终端在建立PC5连接(或称为PC5链路，或称为基于PC5接口的通信路径)过程中，向第二终端发送地址指示信息。其中，地址指示信息用于指示第二终端在PC5连接下使用之前通过无线接入网络与第一终端通信时的PDU会话地址。
步骤530：第一终端发送路径转换指示至第二终端。
步骤540：第二终端发送路径转换响应至第一终端。
步骤550：第一终端释放PDU会话或停用PDU会话的无线承载。
在一些实施例中，第一终端释放第一通信路径下指定服务的PDU会话，或者停用该PDU会话的无线承载。
步骤560：第二终端释放PDU会话或停用PDU会话的无线承载。
在一些实施例中，第二终端释放第一通信路径下指定服务的PDU会话，或者停用该PDU会话的无线承载。
在本公开另一些实施例中，第一终端或第二终端也可保留第一通信路径下的PDU会话及相应资源。
在本公开实施例中，通过以上步骤能够在进行路径转换时保证会话的连续性，尽量减少路径转换对业务服务的影响。同时，能够简化PC5连接建立流程，减少建立PC5连接中的信令开销。
图6是示出根据本公开一些实施例的路径转换装置的框图。如图6所示，本公开实施例的路径转换装置600设置于第一终端，包括：发送模块610、通信模块620。
发送模块610，被配置为在第一终端与第二终端之间的通信满足从第一通信路径到第二通信路径的路径转换触发条件的情况下，向第二终端发送地址指示信息。
在一些实施例中，第一通信路径为基于直连通信接口的通信路径、且第二通信路径为通过移动网络的通信路径。例如，第一通信路径为通过PC5接口进行直接通信的路径，第二通信路径为通过Uu接口进行通信的路径。
在另一些实施例中，第一通信路径为通过移动网络的通信路径、且第二通信路径为基于直连通信接口的通信路径。例如，第一通信路径为通过Uu接口进行通信的路径，第二通信路径为通过PC5接口进行通信的路径。
其中，地址指示信息用于指示在第二通信路径下使用第一通信路径下的会话地址。
在一些实施例中，第一通信路径下的会话地址为协议数据单元(Protocol Data Unit，PDU)会话的地址。具体实施时，根据PDU会话的数据类型不同，PDU会话的地址类型也不同。例如，当PDU会话的数据类型为IP类型时，PDU会话的地址为IP地址。此外，PDU会话的数据类型还可以是以太网类型或者无结构类型，相应地，PDU会话地址也可以是除IP地址以外的其他类型。
在一些实施例中，地址指示信息包括：指示使用先前指定邻近服务对应的会话地址的信息。例如，第一终端发送地址指示信息以指示第二终端使用先前第一通信路径下服务A对应的PDU会话地址。
通信模块620，被配置为基于第一通信路径下的会话地址，通过第二通信路径，与第二终端进行通信。
在一些实施例中，通信模块620，基于第一通信路径下的会话地址，通过第二通信路径，发送业务数据至第二终端。
在一些实施例中，通信模块620，基于第一通信路径下的会话地址，通过第二通信路径，接收第二终端发送的业务数据。
在本公开实施例中，通过以上装置，能够使得两个终端在转换至第二通信路径后仍然使用先前第一通信路径下的会话地址，从而能够在进行路径转换时保证会话的连续性，尽量减少路径转换对业务服务的影响。而且，通过使用先前第一通信路径下的会话地址，减少了为第二通信路径配置会话地址造成的信令开销，优化了路径转换流程。
图7是示出根据本公开另一些实施例的路径转换装置的框图。如图7所示，本公开实施例的路径转换装置700设置于第二终端，包括：接收模块710、通信模块720。
接收模块710，被配置为接收第一终端发送的地址指示信息。其中，地址指示信息用于指示在第二通信路径下使用第一通信路径下的会话地址。
其中，第一终端在第一终端与第二终端之间的通信满足从第一通信路径到第二通信路径的路径转换触发条件的情况下，向第二终端发送地址指示信息。第二终端基于地址指示信息能够得知后续在转换至第二通信路径后，基于先前的会话地址与第一终端进行数据传输。
通信模块720，被配置为基于第一通信路径下的会话地址，通过第二通信路径，与第一终端进行通信。
在一些实施例中，通信模块720，基于第一通信路径下的会话地址，通过第二通信路径，发送业务数据至第一终端。
在一些实施例中，通信模块720，基于第一通信路径下的会话地址，通过第二通信路径，接收第一终端发送的业务数据。
在本公开实施例中，通过以上装置能够使得两个终端在转换至第二通信路径后仍然使用先前第一通信路径下的会话地址，从而能够在进行路径转换时保证会话的连续性，尽量减少路径转换对业务服务的影响。而且，通过使用先前第一通信路径下的会话地址，减少了为第二通信路径配置会话地址造成的信令开销，优化了路径转换流程。
图8是示出根据本公开一些实施例的路径转换系统的组成架构示意图。如图8所示，本公开实施例的路径转换系统包括：第一终端810、第二终端820、应用服务器830。
第一终端810，被配置为发现第二终端。
在一些实施例中，第一终端810发现第二终端820包括：第一终端810向应用服务器830发送发现请求；应用服务器830根据发现请求确定先前通过第一通信路径与第一终端进行通信的终端为第二终端820；应用服务器830发送第一终端指示信息至第一终端810。其中，第一终端指示信息用于指示先前通过第一通信路径与第一终端进行通信的终端为第二终端。
进一步，在上述一些实施例中，第一终端810发现第二终端820还可包括：应用服务器830发送第二终端指示信息至第二终端820，该第二终端指示信息用于指示先前通过第一通信路径与第二终端进行通信的终端为第一终端。
第一终端810，还被配置为在第一终端与第二终端之间的通信满足从第一通信路径到第二通信路径的路径转换触发条件的情况下，向第二终端820发送地址指示信息。其中，地址指示信息用于指示在第二通信路径下使用第一通信路径下的会话地址。
在一些实施例中，第一终端在建立与第二终端之间的第二通信路径的过程中，向第二终端820发送地址指示信息。
第一终端810，还被配置为发送路径转换指示消息至第二终端820。其中，路径转换指示消息用于指示由第一通信路径转换至第二通信路径。
第二终端820，被配置为在接收到路径转换指示消息后，向第一终端810发送路径转换响应消息。
第一终端810与第二终端820，还被配置为，基于第一通信路径下的会话地址，通过第二通信路径进行通信。
在一些实施例中，第一终端810和第二终端820中的至少一个，还被配置为：在将第一通信路径转换至第二通信路径后，释放第一通信路径下的会话或者停用第一通信路径下的会话的无线承载。
在本公开实施例中，通过以上系统能够使得两个终端在转换至第二通信路径后仍然使用先前第一通信路径下的会话地址，从而能够在进行路径转换时保证会话的连续性，尽量减少路径转换对业务服务的影响。而且，通过使用先前第一通信路径下的会话地址，减少了为第二通信路径配置会话地址造成的信令开销，优化了路径转换流程。
图9是示出根据本公开再一些实施例的路径转换装置的框图。
如图9所示，路径转换装置900包括存储器910；以及耦接至该存储器910的处理器920。存储器910用于存储执行路径转换方法对应实施例的指令。处理器920被配置为基于存储在存储器710中的指令，执行本公开中任意一些实施例中的路径转换方法。
图10是示出用于实现本公开一些实施例的计算机系统的框图。
如图10所示，计算机系统1000可以通用计算设备的形式表现。计算机系统1000包括存储器1010、处理器1020和连接不同系统组件的总线1030。
存储器1010例如可以包括系统存储器、非易失性存储介质等。系统存储器例如存储有操作系统、应用程序、引导装载程序(Boot Loader)以及其他程序等。系统存储器可以包括易失性存储介质，例如随机存取存储器(RAM)和/或高速缓存存储器。非易失性存储介质例如存储有执行确定路径转换方法中的至少一种的对应实施例的指 令。非易失性存储介质包括但不限于磁盘存储器、光学存储器、闪存等。
处理器1020可以用通用处理器、数字信号处理器(DSP)、应用专用集成电路(ASIC)、现场可编程门阵列(FPGA)或其它可编程逻辑设备、分立门或晶体管等分立硬件组件方式来实现。相应地，诸如发送模块、通信模块中的每个模块，可以通过中央处理器(CPU)运行存储器中执行相应步骤的指令来实现，也可以通过执行相应步骤的专用电路来实现。
总线1030可以使用多种总线结构中的任意总线结构。例如，总线结构包括但不限于工业标准体系结构(ISA)总线、微通道体系结构(MCA)总线、外围组件互连(PCI)总线。
计算机系统1000还可以包括输入输出接口1040、网络接口1050、存储接口1060等。这些接口1040、1050、1060以及存储器1010和处理器1020之间可以通过总线1030连接。输入输出接口1040可以为显示器、鼠标、键盘等输入输出设备提供连接接口。网络接口1050为各种联网设备提供连接接口。存储接口1060为软盘、U盘、SD卡等外部存储设备提供连接接口。
这里，参照根据本公开实施例的方法、装置和计算机程序产品的流程图和/或框图描述了本公开的各个方面。应当理解，流程图和/或框图的每个框以及各框的组合，都可以由计算机可读程序指令实现。
这些计算机可读程序指令可提供到通用计算机、专用计算机或其他可编程装置的处理器，以产生一个机器，使得通过处理器执行指令产生实现在流程图和/或框图中一个或多个框中指定的功能的装置。
这些计算机可读程序指令也可存储在计算机可读存储器中，这些指令使得计算机以特定方式工作，从而产生一个制造品，包括实现在流程图和/或框图中一个或多个框中指定的功能的指令。
本公开可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。
通过上述实施例中的路径转换方法、装置和系统，能够在进行路径转换时保证会话的连续性，尽量减少路径转换对业务服务的影响。
至此，已经详细描述了根据本公开的路径转换方法、装置和系统。为了避免遮蔽本公开的构思，没有描述本领域所公知的一些细节。本领域技术人员根据上面的描述，完全可以明白如何实施这里公开的技术方案。

Claims (29)

  1. 一种路径转换方法，包括：
    在第一终端与第二终端之间的通信满足从第一通信路径到第二通信路径的路径转换触发条件的情况下，第一终端向第二终端发送地址指示信息，地址指示信息用于指示在第二通信路径下使用第一通信路径下的会话地址；
    第一终端基于第一通信路径下的会话地址，通过第二通信路径，与第二终端进行通信。
  2. 根据权利要求1所述的路径转换方法，还包括：
    第一终端建立与第二终端之间的第二通信路径，其中，所述第一终端向第二终端发送地址指示信息是在建立与第二终端的第二通信路径过程中执行。
  3. 根据权利要求1或2所述的路径转换方法，其中，
    第一通信路径为基于直连通信接口的通信路径、且第二通信路径为通过移动网络的通信路径；或者，
    第一通信路径为通过移动网络的通信路径、且第二通信路径为基于直连通信接口的通信路径。
  4. 根据权利要求3所述的路径转换方法，其中，第一通信路径为基于Uu接口的通信路径，第二通信路径为基于PC5接口的通信路径。
  5. 根据权利要求2至4任一所述的路径转换方法，其中，所述第一终端向第二终端发送地址指示信息包括：
    向第二终端发送直接链路安全模式命令消息，其中，所述直接链路安全模式命令消息包括所述地址指示信息。
  6. 根据权利要求5所述的路径转换方法，其中，第一终端建立与第二终端之间的第二通信路径还包括：
    在向第二终端发送直接链路安全模式命令消息之前，发送直接通信请求至第二终 端；
    在向第二终端发送直接链路安全模式命令消息之后，接收所述第二终端发送的直接链路安全模式完成消息和直接通信接受消息。
  7. 根据权利要求6所述的路径转换方法，其中，所述直接链路安全模式完成消息不包括第二终端的地址配置信息。
  8. 根据权利要求1至7任一所述的路径转换方法，其中，所述第一通信路径下的会话地址包括：协议数据单元PDU会话的地址。
  9. 根据权利要求1至8任一所述的路径转换方法，其中，所述路径转换触发条件包括：
    第一终端接收到应用服务器发送的路径转换指令；或者，
    第一终端自动触发。
  10. 根据权利要求1至9任一所述的路径转换方法，还包括：
    在第一终端向第二终端发送地址指示信息之前，第一终端发送发现请求至应用服务器；
    第一终端接收所述应用服务器发送的第一终端指示信息，所述第一终端指示信息用于指示先前通过第一通信路径与第一终端进行通信的终端为第二终端。
  11. 根据权利要求10所述的路径转换方法，其中，
    所述发现请求包括第一终端的标识。
  12. 根据权利要求1至11任一所述的路径转换方法，还包括：
    第一终端发送路径转换指示消息至第二终端，其中，所述路径转换指示消息用于指示第二终端将第一通信路径转换至第二通信路径。
  13. 根据权利要求12所述的路径转换方法，还包括：
    第一终端接收第二终端发送的对应于所述路径转换指示消息的路径转换响应消 息。
  14. 根据权利要求1至13任一所述的路径转换方法，还包括：
    在将第一通信路径转换至第二通信路径后，第一终端释放第一通信路径下的会话或者停用第一通信路径下的会话的无线承载。
  15. 根据权利要求12至14任一所述的路径转换方法，其中，所述路径转换指示消息包括以下至少一项：路径转换方向、以及不再通过第一通信路径传输流量的指示信息。
  16. 一种路径转换方法，包括：
    第二终端接收第一终端发送的地址指示信息，地址指示信息用于指示在第二通信路径下使用第一通信路径下的会话地址；
    第二终端基于第一通信路径下的会话地址，通过第二通信路径，与第一终端进行通信。
  17. 一种路径转换方法，由第一终端执行，包括：
    确定满足从第一通信路径到第二通信路径的路径转换触发条件；
    在应用服务器辅助下发现第二终端，所述第二终端为先前通过所述第一通信路径与第一终端进行通信的终端；
    与所述第二终端建立所述第二通信路径。
  18. 根据权利要求17所述的路径转换方法，其中，所述在应用服务器辅助下发现第二终端包括：
    发送发现请求至应用服务器；
    接收所述应用服务器发送的第一终端指示信息，所述第一终端指示信息用于指示先前通过第一通信路径与所述第一终端进行通信的终端为所述第二终端。
  19. 一种路径转换装置，设置于第一终端，包括：
    发送模块，被配置为在第一终端与第二终端之间的通信满足从第一通信路径到第 二通信路径的路径转换触发条件的情况下，向第二终端发送地址指示信息，地址指示信息用于指示在第二通信路径下使用第一通信路径下的会话地址；
    通信模块，被配置为基于第一通信路径下的会话地址，通过第二通信路径，与第二终端进行通信。
  20. 一种路径转换装置，设置于第二终端，包括：
    接收模块，被配置为接收第一终端发送的地址指示信息，地址指示信息用于指示在第二通信路径下使用第一通信路径下的会话地址；
    通信模块，被配置为基于第一通信路径下的会话地址，通过第二通信路径，与第一终端进行通信。
  21. 一种路径转换装置，包括：
    存储器；以及
    耦接至所述存储器的处理器，所述处理器被配置为基于存储在所述存储器的指令，执行如权利要求1至18任一项所述的路径转换方法。
  22. 一种路径转换系统，包括：
    第一终端，被配置为在第一终端与第二终端之间的通信满足从第一通信路径到第二通信路径的路径转换触发条件的情况下，向第二终端发送地址指示信息，地址指示信息用于指示在第二通信路径下使用第一通信路径下的会话地址；
    第二终端，被配置为在接收到所述地址指示信息后，基于第一通信路径下的会话地址，通过第二通信路径，与第一终端进行通信。
  23. 根据权利要求22所述的路径转换系统，其中，第一终端还被配置为在向第二终端发送地址指示信息之前，发现第二终端。
  24. 根据权利要求23所述的路径转换系统，其中，所述第一终端发现第二终端包括：
    第一终端向应用服务器发送发现请求；
    应用服务器根据所述发现请求确定先前通过第一通信路径与第一终端进行通信 的终端为第二终端；
    应用服务器发送第一终端指示信息至第一终端，所述第一终端指示信息用于指示先前通过第一通信路径与第一终端进行通信的终端为第二终端。
  25. 根据权利要求24所述的路径转换系统，其中，所述第一终端发现第二终端还包括：
    应用服务器发送第二终端指示信息至第二终端，所述第二终端指示信息用于指示先前通过第一通信路径与第二终端进行通信的终端为第一终端。
  26. 根据权利要求22至25任一所述的路径转换系统，其中，
    第一终端，还被配置为发送路径转换指示消息至第二终端，其中，所述路径转换指示消息用于指示由第一通信路径转换至第二通信路径；
    第二终端，还被配置为在接收到所述路径转换指示消息后，向第一终端发送对应于所述路径转换指示消息的路径转换响应消息。
  27. 根据权利要求22至25任一所述的路径转换系统，其中，
    所述第一终端和所述第二终端中的至少一个还被配置为：在将第一通信路径转换至第二通信路径后，释放第一通信路径下的会话或者停用第一通信路径下的会话的无线承载。
  28. 一种计算机可存储介质，其上存储有计算机程序指令，该指令被处理器执行时实现如权利要求1至18任一项所述的路径转换方法。
  29. 一种计算机程序，包括：
    指令，所述指令当由处理器执行时使所述处理器执行根据权利要求1至18任一项所述的路径转换方法。
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104919766A (zh) * 2013-02-22 2015-09-16 英特尔Ip公司 用于设备到设备通信的路径切换过程
CN105247947A (zh) * 2013-05-14 2016-01-13 三星电子株式会社 设备到设备通信系统中用于ip会话连续性的系统和方法
CN106537854A (zh) * 2015-04-23 2017-03-22 华为技术有限公司 网络通信和直接通信之间的切换方法和装置
CN112654070A (zh) * 2019-10-12 2021-04-13 大唐移动通信设备有限公司 用户终端间的通信方法、装置、设备及存储介质
WO2021125691A1 (ko) * 2019-12-20 2021-06-24 엘지전자 주식회사 통신 경로 스위칭

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104919766A (zh) * 2013-02-22 2015-09-16 英特尔Ip公司 用于设备到设备通信的路径切换过程
CN105247947A (zh) * 2013-05-14 2016-01-13 三星电子株式会社 设备到设备通信系统中用于ip会话连续性的系统和方法
CN106537854A (zh) * 2015-04-23 2017-03-22 华为技术有限公司 网络通信和直接通信之间的切换方法和装置
CN112654070A (zh) * 2019-10-12 2021-04-13 大唐移动通信设备有限公司 用户终端间的通信方法、装置、设备及存储介质
WO2021125691A1 (ko) * 2019-12-20 2021-06-24 엘지전자 주식회사 통신 경로 스위칭

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