WO2021062727A1 - 一种重定向方法及装置、终端设备、网络设备 - Google Patents

一种重定向方法及装置、终端设备、网络设备 Download PDF

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Publication number
WO2021062727A1
WO2021062727A1 PCT/CN2019/109637 CN2019109637W WO2021062727A1 WO 2021062727 A1 WO2021062727 A1 WO 2021062727A1 CN 2019109637 W CN2019109637 W CN 2019109637W WO 2021062727 A1 WO2021062727 A1 WO 2021062727A1
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Prior art keywords
access node
access
network
message
node
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PCT/CN2019/109637
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English (en)
French (fr)
Inventor
许阳
刘建华
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Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to CN201980095361.XA priority Critical patent/CN113692777B/zh
Priority to PCT/CN2019/109637 priority patent/WO2021062727A1/zh
Publication of WO2021062727A1 publication Critical patent/WO2021062727A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/18Selecting a network or a communication service
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/15Setup of multiple wireless link connections
    • H04W76/16Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer

Definitions

  • the embodiments of the present application relate to the field of mobile communication technology, and specifically relate to a redirection method and device, terminal equipment, and network equipment.
  • Non-public networks Non Public Network, NPN
  • PLMN Public Land Mobile Network
  • the embodiments of the present application provide a redirection method and device, terminal equipment, and network equipment.
  • the terminal device receives a redirection message triggered by the first access node, where the redirection message carries first indication information, and the first indication information is used to instruct the terminal device to access the second access node;
  • At least one of the first access node and the second access node is a non-3GPP access node.
  • the first access node sends a redirection message to the terminal device, where the redirection message carries first indication information, and the first indication information is used to instruct the terminal device to access the second access node;
  • At least one of the first access node and the second access node is a non-3GPP access node.
  • a receiving unit configured to receive a redirection message triggered by a first access node, where the redirection message carries first indication information, and the first indication information is used to instruct the terminal device to access the second access node;
  • At least one of the first access node and the second access node is a non-3GPP access node.
  • the redirection device provided in the embodiment of the present application is applied to a first access node, and the device includes:
  • a sending unit configured to send a redirection message to a terminal device, where the redirection message carries first indication information, and the first indication information is used to instruct the terminal device to access the second access node;
  • At least one of the first access node and the second access node is a non-3GPP access node.
  • the terminal device provided in the embodiment of the present application includes a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the aforementioned redirection method.
  • the network device provided by the embodiment of the present application includes a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the aforementioned redirection method.
  • the chip provided in the embodiment of the present application is used to implement the above-mentioned redirection method.
  • the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes the aforementioned redirection method.
  • the computer-readable storage medium provided by the embodiment of the present application is used to store a computer program, and the computer program enables a computer to execute the above-mentioned redirection method.
  • the computer program product provided by the embodiment of the present application includes computer program instructions, and the computer program instructions cause the computer to execute the above-mentioned redirection method.
  • the computer program provided by the embodiment of the present application when it runs on a computer, causes the computer to execute the above-mentioned redirection method.
  • the redirection is triggered by the first access node, and the first indication information is carried in the redirection message.
  • the first indication information improves the success rate of the terminal device redirection and meets the service requirements of the terminal device.
  • FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a terminal device provided by an embodiment of the present application accessing a PLMN through an NPN;
  • FIG. 3 is a schematic flowchart of a redirection method provided by an embodiment of the application.
  • Figure 4-1 is a first flowchart of triggering a redirect message provided by an embodiment of the present application
  • Figure 4-2 is a second flowchart of triggering a redirect message provided by an embodiment of the present application.
  • Fig. 4-3 is a third flowchart of triggering a redirect message provided by an embodiment of the present application.
  • FIG. 5 is a flowchart of application scenario one provided by an embodiment of the present application.
  • FIG. 6 is a flowchart of application scenario 2 provided by an embodiment of the present application.
  • FIG. 7 is a flowchart of application scenario 3 provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram 1 of the structural composition of a redirection device provided by an embodiment of this application.
  • FIG. 9 is a second schematic diagram of the structural composition of the redirection device provided by an embodiment of the application.
  • FIG. 10 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a chip of an embodiment of the present application.
  • FIG. 12 is a schematic block diagram of a communication system provided by an embodiment of the present application.
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • 5G communication system 5G communication system or future communication system.
  • the communication system 100 applied in the embodiment of the present application is shown in FIG. 1.
  • the communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal 120 (or called a communication terminal or terminal).
  • the network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminals located in the coverage area.
  • the network device 110 may be an evolved base station (Evolutional Node B, eNB, or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or
  • the network equipment can be a mobile switching center, a relay station, an access point, an in-vehicle device, a wearable device, a hub, a switch, a bridge, a router, a network side device in a 5G network, or a network device in a future communication system, etc.
  • the communication system 100 also includes at least one terminal 120 located within the coverage area of the network device 110.
  • the "terminal” used here includes, but is not limited to, connection via a wired line, such as via a public switched telephone network (PSTN), digital subscriber line (Digital Subscriber Line, DSL), digital cable, and direct cable connection; And/or another data connection/network; and/or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital TV networks such as DVB-H networks, satellite networks, AM-FM Broadcast transmitter; and/or another terminal's device configured to receive/send communication signals; and/or Internet of Things (IoT) equipment.
  • PSTN public switched telephone network
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • a terminal set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a “wireless terminal” or a “mobile terminal”.
  • mobile terminals include, but are not limited to, satellite or cellular phones; Personal Communications System (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, Internet/intranet PDA with internet access, web browser, memo pad, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or others including radio telephone transceivers Electronic device.
  • PCS Personal Communications System
  • GPS Global Positioning System
  • Terminal can refer to access terminal, user equipment (UE), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user Device.
  • the access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminals in 5G networks, or terminals in the future evolution of PLMN, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • direct terminal connection (Device to Device, D2D) communication may be performed between the terminals 120.
  • the 5G communication system or 5G network may also be referred to as a New Radio (NR) system or NR network.
  • NR New Radio
  • FIG. 1 exemplarily shows one network device and two terminals.
  • the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminals. This embodiment of the present application There is no restriction on this.
  • the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • the devices with communication functions in the network/system in the embodiments of the present application may be called communication devices.
  • the communication device may include a network device 110 and a terminal 120 with communication functions, and the network device 110 and the terminal 120 may be the specific devices described above, which will not be repeated here; communication
  • the device may also include other devices in the communication system 100, such as other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • NPN can exist independently of PLMN, that is, NPN has its own network elements, such as policy control function network element (PCF, Policy Control Function), session management function network element (SMF, Session Management Function), access mobile The network elements of sexual management (AMF, Core Access and Mobility Management Function), user plane function network elements (UPF, User Plane Function), and unified data management network elements (UDM, Unified Data Management).
  • PCF policy control function network element
  • SMF Session Management Function
  • AMF Access and Mobility Management Function
  • UPF User Plane Function
  • UDM Unified Data Management
  • NPN may not support some services, such as IP Multimedia Subsystem (IMS) services.
  • IMS IP Multimedia Subsystem
  • the terminal device needs to access the PLMN for specific services.
  • the terminal device accesses the PLMN through NPN, where the access node in the NPN is a 3GPP access node (such as NR base station, E-UTRA base station) that supports the NPN network, and the base station cell can broadcast the supported NPN
  • the terminal device can access the cell and perform a non-access stratum (NAS) process (such as a registration process, a PDU session establishment process, etc.) to the core network of the NPN.
  • NAS non-access stratum
  • the process of the access network and the process of the core network in the NPN are basically the same as the 3GPP protocol. Furthermore, after the terminal device completes registration in the NPN and establishes a Protocol Data Unit (PDU) session, it can establish a tunnel with the Non-3GPP Interworking Function (N3IWF) in the PLMN through the PDU session As an access node connected to the PLMN core network, the N3IWF can carry NAS messages between the terminal device and the PLMN core network, so that the terminal device can complete the registration with the PLMN and the establishment of the PLMN PDU session based on the NPN as a pipe. In this way, the terminal device can use the UPF in the NPN as the egress to transmit part of the business data, and at the same time can use the UPF of the PLMN as the egress to transmit another part of the business data.
  • N3IWF Non-3GPP Interworking Function
  • PLMN PDU sessions PLMN PDU sessions
  • NPN PDU session NPN PDU session for short
  • the fallback process can be a fallback process where the 5GC remains unchanged and the RAT changes (NR base station -> E-UTRA base station), which is called RAT Fallback; it can also be a core network change (5GC -> EPC). And the fallback process of RAT change (NR base station -> E-UTRA base station).
  • N3IWF needs to be used to trigger the interoperability process to the Evolved Packet System (EPS).
  • EPS Evolved Packet System
  • FIG. 3 is a schematic flowchart of a redirection method provided by an embodiment of the application. As shown in FIG. 3, the redirection method includes the following steps:
  • Step 301 The terminal device receives a redirection message triggered by a first access node, the redirection message carries first indication information, and the first indication information is used to instruct the terminal device to access the second access node; At least one of the first access node and the second access node is a non-3GPP access node.
  • the terminal device accesses the second network through the first network.
  • the first network is NPN
  • the second network is PLMN.
  • the terminal device accesses the PLMN through the NPN.
  • a PDU session on the NPN side (referred to as NPN PDU session) is established between the terminal device and the NPN
  • the terminal device establishes a PDU session on the PLMN side (referred to as a PLMN PDU session) between the terminal device and the PLMN based on the NPN PDU session.
  • the redirection process (or interoperability process) is triggered by the first access node, so that the terminal device can be redirected to the designated second access node.
  • the redirection message delivered by the network side to the terminal device carries the first indication information, and optionally, the first indication information is carried by an IPsec message, or an RRC message, or a NAS message.
  • the first indication information includes related information of the second access node (that is, the target access node).
  • the specific content of the first indication information is described below.
  • the first indication information includes at least one of the following access information: access frequency, access standard , PLMN identification, subcarrier spacing, synchronization signal parameters, cell identification, cell system information, location information, core network type.
  • the location information may be represented by at least one of the following: tracking area identification, cell information, and global positioning system (Global Positioning System, GPS) coordinates.
  • the terminal device determines a target cell according to the first indication information, and accesses the target cell to complete RRC connection establishment; wherein, the target cell is the cell of the second access node.
  • the first indication information includes at least one of the following access Information: Node ID, Fully Qualified Domain Name (FQDN) information, PLMN ID, core network type, node address, location information.
  • FQDN Fully Qualified Domain Name
  • PLMN ID PLMN ID
  • core network type node address
  • location information can be represented by at least one of the following: tracking area identification, cell information, and GPS coordinates.
  • the terminal device determines the address information of the second access node according to the first indication information, and establishes a connection with the second access node based on the address information of the second access node. Specifically, the terminal device may use the first indication information (for example, the FQDN constructed using the node identifier or directly use the FQDN carried in the first indication information) to query the specific address information of the target node (for example, the target node) through the DNS mechanism. IP address) in order to establish a secure tunnel with the target node, and then initiate NAS interaction with the core network element connected to the target node to complete registration and user plane connection establishment.
  • the first indication information for example, the FQDN constructed using the node identifier or directly use the FQDN carried in the first indication information
  • the target node for example, the target node
  • IP address IP address
  • the first access node is a non-3GPP access network node or a 3GPP radio access network base station
  • the second access node is a 3GPP radio access network base station or a non-3GPP access network node.
  • the non-3GPP access network node is, for example, N3IWF or evolved Packet Data Gateway (ePDG).
  • the terminal device receives the redirection message triggered by the first access node.
  • the triggering method of the redirection message will be described in detail below.
  • the redirection message is sent by the first access node to the terminal device, where the first access node is an access node of a second network, and optionally, the second network is, for example, a PLMN.
  • the first access node sends a redirection message to the terminal device, where the redirection message carries the first indication information. Further, the redirection message is carried in an IPsec message (such as an IPsec SA message).
  • the first access node is N3IWF.
  • the terminal device establishes a tunnel (such as an IPSec tunnel) with the N3IWF. Further, the tunnel can be established through the NPN access network or through other non-3GPP access networks.
  • the N3IWF sends a redirection message to the terminal device, where the redirection message includes the first indication information.
  • the terminal device accesses the designated network (that is, establishes a connection with the designated access node) according to the first instruction information.
  • the redirection message in step 1 can be carried in an IPsec message.
  • the redirection message is sent by a third access node to the terminal device; wherein, the third access node is an access node of the first network.
  • the first network is, for example, NPN.
  • the redirection message is sent by the third access node to the terminal device after receiving the redirection request message sent by the first access node, wherein the The first access node is an access node of the second network.
  • the second network is, for example, a PLMN.
  • the redirection message is carried in an RRC message.
  • the RRC message is an RRC connection release message.
  • the redirection request message carries the first indication information.
  • the first access node is N3IWF.
  • the terminal device establishes a tunnel (such as an IPSec tunnel) with the N3IWF. Further, the tunnel can be established through the NPN access network or through other non-3GPP access networks.
  • the N3IWF sends a redirection request message to the NPN access network.
  • the redirection request message includes the first indication information.
  • the NPN access network (such as the NG-RAN base station) sends a redirection message to the terminal device, where the redirection message contains first indication information.
  • the first indication information may be obtained in step 1, or it may be itself It is configured on the NPN access network.
  • the terminal device releases the current connection according to the first instruction information and accesses the designated network (that is, establishes a connection with the designated access node).
  • the redirection message in step 2 may be an RRC connection release message.
  • the redirection message is sent by the first core network to the terminal device; wherein, the first core network is a core network of the first network.
  • the first network is, for example, NPN.
  • the redirection message is sent by the first core network to the terminal device after receiving the redirection request message sent by the first access node, wherein the first core network
  • An access node is an access node of a second network.
  • the second network is, for example, a PLMN.
  • the redirection message is carried in a NAS message on the first network side.
  • the redirection request message carries the first indication information.
  • the first access node is N3IWF.
  • the terminal device establishes a tunnel (such as an IPSec tunnel) with the N3IWF. Further, the tunnel can be established through the NPN access network or through other non-3GPP access networks.
  • 1a and N3IWF send a redirection request message to the PLMN core network (such as 5GC or EPC).
  • the redirection request message includes the first indication information.
  • the PLMN core network (such as 5GC or EPC) sends a redirection message to the terminal device.
  • the redirection message contains first indication information.
  • the first indication information may be obtained in step 1a, or it may be the PLMN core network. Configured by yourself.
  • the terminal device accesses the designated network (that is, establishes a connection with the designated access node) according to the first instruction information.
  • the redirection message in step 2a may be a PLMN side NAS message (referred to as a PLMN NAS message for short).
  • the redirection message is sent by the second core network to the terminal device; wherein, the second core network is a core network of the second network.
  • the second network is, for example, a PLMN.
  • the redirection message is sent by the second core network to the terminal device after receiving the redirection request message sent by the first access node, wherein the second core network An access node is an access node of the second network. Further, the redirection message is carried in a NAS message on the second network side. Optionally, the redirection request message carries the first indication information.
  • the first access node is N3IWF.
  • the terminal device establishes a tunnel (such as an IPSec tunnel) with the N3IWF. Further, the tunnel can be established through the NPN access network or through other non-3GPP access networks.
  • 1b and N3IWF send a redirection request message to the NPN core network.
  • the redirection request message includes the first indication information.
  • the NPN core network sends a redirection message to the terminal device, where the redirection message includes first indication information.
  • the first indication information may be obtained in step 1b or configured by the NPN core network itself.
  • the terminal device accesses the designated network (that is, establishes a connection with the designated access node) according to the first instruction information.
  • the redirection message in step 2b may be an NPN side NAS message (referred to as NPN NAS message for short).
  • the first access node is all N3IWF as an example, and it is not limited to this.
  • the first access node can also be ePDG, or N3IWF and ePDG's combined network element (Combined N3IWF/ePDG).
  • the technical solution of the embodiment of the present application can be applied to the voice fallback process, that is, the redirection message in the above solution is applied to the voice fallback process.
  • the following describes the technical solutions of the embodiments of the present application with examples in conjunction with a specific voice fallback process.
  • Figure 5 shows the IMS voice establishment process that is triggered by N3IWF to redirect to PLMN E-UTRAN. As shown in Figure 5, the process includes the following steps:
  • the terminal device completes the connection with the NPN access network, the registration of the NPN core network, and the establishment of a session.
  • the terminal device establishes an IPSec channel with the N3IWF through the session of the NPN network.
  • the terminal device completes registration and PDU session establishment with the 5GC (referred to as PLMN5GC) on the PLMN side through the NAS message carried by the IPSec channel.
  • PLMN5GC 5GC
  • the terminal device When the terminal device initiates a call, it sends IMS signaling to the IMS network through a PLMN 5GC PDU session.
  • the IMS network sends a dedicated data stream/dedicated bearer establishment request to the core network of the PLMN.
  • the core network of the PLMN sends a dedicated data stream/dedicated bearer establishment request to the N3IWF.
  • N3IWF triggers redirection to E-UTRAN.
  • the terminal equipment completes the establishment of the RRC connection with E-UTRAN.
  • the terminal device completes the attachment to the PLMN EPC and the establishment of the PDN connection.
  • the PDU session of the original PLMN 5GC is converted into the corresponding PDN connection on the PLMN EPC, and the IP address remains unchanged.
  • the terminal equipment completes the IMS signaling interaction with the IMS network, and the terminal equipment rings.
  • the "redirection" method in step 7 can be implemented by using any of the “redirection message triggering methods" in the foregoing embodiment of this application.
  • the specific content of the first indication information in the redirect message can be implemented by using the relevant description in (A) of the “specific content of the first indication information” in the above-mentioned embodiment of the present application.
  • PLMN 5GC and PLMN EPC there need to be co-located, such as SMF+PGW-C (that is, SMF and PGW-C are co-located), UPF+PGW-U (that is, UPF and PGW-U are co-located). Set), UDM+HSS (that is, UDM and HSS are combined), PCF+PCRF (that is, PCF and PCRF are combined), etc., to ensure that the 5G PDU session is converted to 4G PDN connection without changing the IP address. This can be Ensure that IMS signaling will not be interrupted.
  • SMF+PGW-C that is, SMF and PGW-C are co-located
  • UPF+PGW-U that is, UPF and PGW-U are co-located
  • Set UDM+HSS (that is, UDM and HSS are combined)
  • PCF+PCRF that is, PCF and PCRF are combined
  • Figure 6 shows the process of completing IMS voice establishment by triggering redirection to ePDG by N3IWF. As shown in Figure 6, the process includes the following steps:
  • the terminal device completes the connection with the NPN access network, the registration of the NPN core network, and the establishment of a session.
  • the terminal device establishes an IPSec channel with the N3IWF through the session of the NPN network.
  • the terminal device completes registration and PDU session establishment with the 5GC (referred to as PLMN5GC) on the PLMN side through the NAS message carried by the IPSec channel.
  • PLMN5GC 5GC
  • the terminal device When the terminal device initiates a call, it sends IMS signaling to the IMS network through a PLMN 5GC PDU session.
  • the IMS network sends a dedicated data stream/dedicated bearer establishment request to the core network of the PLMN.
  • the core network of the PLMN sends a dedicated data stream/dedicated bearer establishment request to the N3IWF.
  • N3IWF triggers redirection to ePDG.
  • the terminal device completes the establishment of the tunnel with the ePDG.
  • the terminal equipment establishes a dedicated bearer on the EPS through the ePDG.
  • the terminal equipment completes the IMS signaling interaction with the IMS network, and the terminal equipment rings.
  • the "redirection" method in step 7 can be implemented by using any of the “redirection message triggering methods" in the foregoing embodiment of this application.
  • the specific content of the first indication information in the redirect message can be implemented by using the relevant description in (B) of the “specific content of the first indication information” in the foregoing embodiment of the present application.
  • PLMN 5GC and PLMN EPC there need to be co-located, such as SMF+PGW-C (that is, SMF and PGW-C are co-located), UPF+PGW-U (that is, UPF and PGW-U are co-located). Set), UDM+HSS (that is, UDM and HSS are combined), PCF+PCRF (that is, PCF and PCRF are combined), etc., to ensure that the 5G PDU session is converted to 4G PDN connection without changing the IP address. This can be Ensure that IMS signaling will not be interrupted.
  • SMF+PGW-C that is, SMF and PGW-C are co-located
  • UPF+PGW-U that is, UPF and PGW-U are co-located
  • Set UDM+HSS (that is, UDM and HSS are combined)
  • PCF+PCRF that is, PCF and PCRF are combined
  • steps 8-9 establish a user plane bearer through ePDG and EPC, and interact with the IMS through the bearer to complete the IMS signaling process.
  • the terminal device only establishes a user plane connection with the EPC, and there is no control plane NAS signaling process (such as an attachment process).
  • Figure 7 shows the emergency service establishment process that is triggered by N3IWF to redirect to ePDG. As shown in Figure 7, the process includes the following steps:
  • the terminal device completes the connection with the NPN access network, the registration of the NPN core network, and the establishment of a session.
  • the terminal device establishes an IPSec channel with the N3IWF through the session of the NPN network.
  • the terminal device completes registration and PDU session establishment with the 5GC (referred to as PLMN5GC) on the PLMN side through the NAS message carried by the IPSec channel.
  • PLMN5GC 5GC
  • the terminal device sends a service request message (or request fallback message) to the AMF in the PLMN 5GC.
  • the AMF in the PLMN 5GC sends a fallback request message (that is, the N2 request message) to the N3IWF.
  • N3IWF triggers redirection to E-UTRAN.
  • the terminal equipment completes the establishment of the RRC connection with E-UTRAN.
  • the terminal device completes the attachment to the PLMN EPC and the establishment of the PDN connection.
  • the PDU session of the original PLMN 5GC is converted into the corresponding PDN connection on the PLMN EPC, and the IP address remains unchanged.
  • the "redirection" method in step 6 can be implemented by using any of the “redirection message triggering methods" in the foregoing embodiment of this application.
  • the specific content of the first indication information in the redirect message can be implemented by using the relevant description in (A) of the “specific content of the first indication information” in the above-mentioned embodiment of the present application.
  • the fallback request in this embodiment is actively triggered by the terminal device, rather than when the N3IWF requests the establishment of a dedicated bearer through the IMS network.
  • the fallback process is illustrated by the fallback of voice services. It is not limited to this.
  • the technical solutions of the embodiments of the present application can be used in any scenario that requires redirection, such as mobile scenarios (such as a terminal device moving from 3GPP access coverage to 3GPP access coverage), and access to the core network via WLAN (not through NPN access) and so on.
  • the technical solution of the embodiment of the present application is not limited to the scenario of accessing the PLMN through NPN, and any scenario where a non-3GPP standard (such as WLAN) is used to access the PLMN through N3IWF/ePDG is applicable.
  • a non-3GPP standard such as WLAN
  • the technical solution of the embodiment of the present application proposes a process of triggering redirection by a non-3GPP access node, which improves the success rate of accessing the target node.
  • the technical solutions of the embodiments of the present application make full use of the existing architecture, parameters, signaling, etc., have little impact on the existing architecture, and are easy to implement.
  • the technical solutions of the embodiments of the present application can be used in both cases where N3IWF accesses PLMN 5G and ePDG accesses PLMN 4G.
  • the technical solutions of the embodiments of this application can not only be used for N3IWF/ePDG to trigger the redirection process to other 3GP access nodes P or non-3GPP access nodes, but also can be used in reverse for 3GPP access nodes (such as E-UTRAN base stations).
  • 3GPP access nodes such as E-UTRAN base stations.
  • NR base station triggers a redirection procedure for connecting to a non-3GPP access node.
  • the 3GPP access node sends the RRC connection release message to the terminal device to carry the relevant access information of the non-3GPP access node (refer to the relevant description in (B) of the above-mentioned "specific content of the first indication information" );
  • the terminal device completes the establishment of the tunnel to the N3IWF/ePDG according to the information, and can further interact with the core network connected to the N3IWF/ePDG to perform NAS interaction to complete registration and session establishment.
  • FIG. 8 is a schematic diagram 1 of the structural composition of the redirection device provided by an embodiment of the application, which is applied to a network device. As shown in FIG. 8, the redirection device includes:
  • the receiving unit 801 is configured to receive a redirection message triggered by a first access node, where the redirection message carries first indication information, and the first indication information is used to instruct a terminal device to access the second access node;
  • At least one of the first access node and the second access node is a non-3GPP access node.
  • the first indication information is carried by an IPsec message, or an RRC message, or a NAS message.
  • the second access node is a 3GPP access node.
  • the first indication information includes at least one of the following access information: access frequency, access standard, PLMN identification, subcarrier spacing, synchronization signal parameters, cell identification, cell system information, Location information, core network type.
  • the device further includes:
  • the access unit 802 is configured to determine a target cell according to the first indication information, and access the target cell; wherein, the target cell is a cell of the second access node.
  • the second access node is a non-3GPP access node.
  • the first indication information includes at least one of the following access information: node identification, FQDN information, PLMN identification, core network type, node address, and location information.
  • the device further includes:
  • the access unit 802 is configured to determine address information of the second access node according to the first indication information, and establish a connection with the second access node based on the address information of the second access node .
  • the redirection message is sent by the first access node to the terminal device.
  • the redirection message is carried in an IPsec message.
  • the redirection message is sent to the terminal device by a third access node
  • the third access node is an access node of the first network.
  • the redirection message is sent by the third access node to the terminal device after receiving the redirection request message sent by the first access node;
  • the first access node is an access node of the second network.
  • the redirection message is carried in an RRC message.
  • the redirection message is sent by the first core network to the terminal device;
  • the first core network is the core network of the first network.
  • the redirection message is sent by the first core network to the terminal device after receiving the redirection request message sent by the first access node;
  • the first access node is an access node of the second network.
  • the redirection message is carried in a NAS message on the first network side.
  • the redirection message is sent to the terminal device by the second core network
  • the second core network is the core network of the second network.
  • the redirection message is sent by the second core network to the terminal device after receiving the redirection request message sent by the first access node;
  • the first access node is an access node of the second network.
  • the redirection message is carried in a NAS message on the second network side.
  • the redirection request message carries the first indication information.
  • the first network is NPN.
  • the second network is a PLMN.
  • the device further includes:
  • the access unit 802 is used to access the PLMN through NPN.
  • the first access node is a non-3GPP access network node or a 3GPP radio access network base station
  • the second access node is a 3GPP radio access network base station or a non-3GPP access network node.
  • the redirection message is applied to a voice fallback procedure.
  • Fig. 9 is a second schematic diagram of the structural composition of the redirection apparatus provided by an embodiment of the application, which is applied to a network device (ie, the first access node). As shown in Fig. 9, the redirection apparatus includes:
  • the sending unit 901 is configured to send a redirection message to a terminal device, where the redirection message carries first indication information, and the first indication information is used to instruct the terminal device to access the second access node;
  • At least one of the first access node and the second access node is a non-3GPP access node.
  • the first indication information is carried by an IPsec message, or an RRC message, or a NAS message.
  • the second access node is a 3GPP access node.
  • the first indication information includes at least one of the following access information: access frequency, access standard, PLMN identification, subcarrier spacing, synchronization signal parameters, cell identification, cell system information, Location information, core network type.
  • the second access node is a non-3GPP access node.
  • the first indication information includes at least one of the following access information: node identification, FQDN information, PLMN identification, core network type, node address, and location information.
  • the first access node is a non-3GPP access network node or a 3GPP radio access network base station
  • the second access node is a 3GPP radio access network base station or a non-3GPP access network node.
  • the redirection message is applied to a voice fallback procedure.
  • FIG. 10 is a schematic structural diagram of a communication device 1000 according to an embodiment of the present application.
  • the communication device may be a terminal device or a network device (such as an access node).
  • the communication device 1000 shown in FIG. 10 includes a processor 1010.
  • the processor 1010 can call and run a computer program from the memory to implement the present application. The method in the embodiment.
  • the communication device 1000 may further include a memory 1020.
  • the processor 1010 can call and run a computer program from the memory 1020 to implement the method in the embodiment of the present application.
  • the memory 1020 may be a separate device independent of the processor 1010, or may be integrated in the processor 1010.
  • the communication device 1000 may further include a transceiver 1030, and the processor 1010 may control the transceiver 1030 to communicate with other devices. Specifically, it may send information or data to other devices, or receive other devices. Information or data sent by the device.
  • the transceiver 1030 may include a transmitter and a receiver.
  • the transceiver 1030 may further include an antenna, and the number of antennas may be one or more.
  • the communication device 1000 may specifically be a network device of an embodiment of the application, and the communication device 1000 may implement the corresponding process implemented by the network device in each method of the embodiment of the application. For the sake of brevity, details are not repeated here. .
  • the communication device 1000 may specifically be a mobile terminal/terminal device of an embodiment of the present application, and the communication device 1000 may implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • I won’t repeat it here.
  • FIG. 11 is a schematic structural diagram of a chip of an embodiment of the present application.
  • the chip 1100 shown in FIG. 11 includes a processor 1110, and the processor 1110 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the chip 1100 may further include a memory 1120.
  • the processor 1110 can call and run a computer program from the memory 1120 to implement the method in the embodiment of the present application.
  • the memory 1120 may be a separate device independent of the processor 1110, or may be integrated in the processor 1110.
  • the chip 1100 may further include an input interface 1130.
  • the processor 1110 can control the input interface 1130 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.
  • the chip 1100 may further include an output interface 1140.
  • the processor 1110 can control the output interface 1140 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.
  • the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the chip can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip mentioned in the embodiment of the present application may also be referred to as a system-level chip, a system-on-chip, a system-on-chip, or a system-on-chip.
  • FIG. 12 is a schematic block diagram of a communication system 1200 according to an embodiment of the present application. As shown in FIG. 12, the communication system 1200 includes a terminal device 1210 and a network device 1220.
  • the terminal device 1210 can be used to implement the corresponding function implemented by the terminal device in the above method
  • the network device 1220 can be used to implement the corresponding function implemented by the network device in the above method. For brevity, it will not be repeated here. .
  • the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC application specific integrated circuit
  • FPGA Field Programmable Gate Array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • DDR SDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • Enhanced SDRAM, ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • Synchronous Link Dynamic Random Access Memory Synchronous Link Dynamic Random Access Memory
  • DR RAM Direct Rambus RAM
  • the memory in the embodiment of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is to say, the memory in the embodiments of the present application is intended to include, but is not limited to, these and any other suitable types of memory.
  • the embodiment of the present application also provides a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium can be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application For the sake of brevity, I won’t repeat it here.
  • the embodiments of the present application also provide a computer program product, including computer program instructions.
  • the computer program product can be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program product can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, For the sake of brevity, I will not repeat them here.
  • the embodiment of the present application also provides a computer program.
  • the computer program can be applied to the network device in the embodiment of the present application.
  • the computer program runs on the computer, it causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • I won’t repeat it here.
  • the computer program can be applied to the mobile terminal/terminal device in the embodiment of the present application.
  • the computer program runs on the computer, the computer executes each method in the embodiment of the present application. For the sake of brevity, the corresponding process will not be repeated here.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of the present application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disks or optical disks and other media that can store program codes. .

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Abstract

本申请实施例提供一种重定向方法及装置、终端设备、网络设备,该方法包括:终端设备接收第一接入节点触发的重定向消息,所述重定向消息携带第一指示信息,所述第一指示信息用于指示所述终端设备接入第二接入节点;所述第一接入节点和所述第二接入节点中的至少之一为非3GPP接入节点。

Description

一种重定向方法及装置、终端设备、网络设备 技术领域
本申请实施例涉及移动通信技术领域,具体涉及一种重定向方法及装置、终端设备、网络设备。
背景技术
当前第三代合作伙伴计划(3rd Generation Partnership Project,3GPP)基站与非3GPP接入节点之间没有重定向机制,不能实现一些场景需求,比如,在一些非公共网络(Non Public Network,NPN)与公共陆地移动网络(Public Land Mobile Network,PLMN)的互操作。为此,需要一种非3GPP接入节点相关的重定向机制,实现NPN和PLMN之间的互操作。
发明内容
本申请实施例提供一种重定向方法及装置、终端设备、网络设备。
本申请实施例提供的重定向方法,包括:
终端设备接收第一接入节点触发的重定向消息,所述重定向消息携带第一指示信息,所述第一指示信息用于指示所述终端设备接入第二接入节点;
所述第一接入节点和所述第二接入节点中的至少之一为非3GPP接入节点。
本申请实施例提供的重定向方法,包括:
第一接入节点向终端设备发送重定向消息,所述重定向消息携带第一指示信息,所述第一指示信息用于指示所述终端设备接入第二接入节点;
所述第一接入节点和所述第二接入节点中的至少之一为非3GPP接入节点。
本申请实施例提供的重定向装置,包括:
接收单元,用于接收第一接入节点触发的重定向消息,所述重定向消息携带第一指示信息,所述第一指示信息用于指示终端设备接入第二接入节点;
所述第一接入节点和所述第二接入节点中的至少之一为非3GPP接入节点。
本申请实施例提供的重定向装置,应用于第一接入节点,所述装置包括:
发送单元,用于向终端设备发送重定向消息,所述重定向消息携带第一指示信息,所述第一指示信息用于指示所述终端设备接入第二接入节点;
所述第一接入节点和所述第二接入节点中的至少之一为非3GPP接入节点。
本申请实施例提供的终端设备,包括处理器和存储器。该存储器用于存储计算机程序,该处理器用于调用并运行该存储器中存储的计算机程序,执行上述的重定向方法。
本申请实施例提供的网络设备,包括处理器和存储器。该存储器用于存储计算机程序,该处理器用于调用并运行该存储器中存储的计算机程序,执行上述的重定向方法。
本申请实施例提供的芯片,用于实现上述的重定向方法。
具体地,该芯片包括:处理器,用于从存储器中调用并运行计算机程序,使得安 装有该芯片的设备执行上述的重定向方法。
本申请实施例提供的计算机可读存储介质,用于存储计算机程序,该计算机程序使得计算机执行上述的重定向方法。
本申请实施例提供的计算机程序产品,包括计算机程序指令,该计算机程序指令使得计算机执行上述的重定向方法。
本申请实施例提供的计算机程序,当其在计算机上运行时,使得计算机执行上述的重定向方法。
通过上述技术方案,通过第一接入节点触发重定向,在重定向消息中携带第一指示信息,通过第一指示信息提高了终端设备重定向的成功率,满足了终端设备的业务需求。
附图说明
此处所说明的附图用来提供对本申请的进一步理解,构成本申请的一部分,本申请的示意性实施例及其说明用于解释本申请,并不构成对本申请的不当限定。在附图中:
图1是本申请实施例提供的一种通信系统架构的示意性图;
图2是本申请实施例提供的终端设备通过NPN接入到PLMN的示意图;
图3为本申请实施例提供的重定向方法的流程示意图;
图4-1是本申请实施例提供的重定向消息的触发流程图一;
图4-2是本申请实施例提供的重定向消息的触发流程图二;
图4-3是本申请实施例提供的重定向消息的触发流程图三;
图5是本申请实施例提供的应用场景一的流程图;
图6是本申请实施例提供的应用场景二的流程图;
图7是本申请实施例提供的应用场景三的流程图;
图8为本申请实施例提供的重定向装置的结构组成示意图一;
图9为本申请实施例提供的重定向装置的结构组成示意图二;
图10是本申请实施例提供的一种通信设备示意性结构图;
图11是本申请实施例的芯片的示意性结构图;
图12是本申请实施例提供的一种通信系统的示意性框图。
具体实施方式
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行描述,显然,所描述的实施例是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。
本申请实施例的技术方案可以应用于各种通信系统,例如:长期演进(Long Term Evolution,LTE)系统、LTE频分双工(Frequency Division Duplex,FDD)系统、LTE时分双工(Time Division Duplex,TDD)、系统、5G通信系统或未来的通信系统等。
示例性的,本申请实施例应用的通信系统100如图1所示。该通信系统100可以包括网络设备110,网络设备110可以是与终端120(或称为通信终端、终端)通信的设备。网络设备110可以为特定的地理区域提供通信覆盖,并且可以与位于该覆盖区域内的终端进行通信。可选地,该网络设备110可以是LTE系统中的演进型基站(Evolutional Node B,eNB或eNodeB),或者是云无线接入网络(Cloud Radio Access Network,CRAN)中的无线控制器,或者该网络设备可以为移动交换中心、中继站、接入点、车载设备、 可穿戴设备、集线器、交换机、网桥、路由器、5G网络中的网络侧设备或者未来通信系统中的网络设备等。
该通信系统100还包括位于网络设备110覆盖范围内的至少一个终端120。作为在此使用的“终端”包括但不限于经由有线线路连接,如经由公共交换电话网络(Public Switched Telephone Networks,PSTN)、数字用户线路(Digital Subscriber Line,DSL)、数字电缆、直接电缆连接;和/或另一数据连接/网络;和/或经由无线接口,如,针对蜂窝网络、无线局域网(Wireless Local Area Network,WLAN)、诸如DVB-H网络的数字电视网络、卫星网络、AM-FM广播发送器;和/或另一终端的被设置成接收/发送通信信号的装置;和/或物联网(Internet of Things,IoT)设备。被设置成通过无线接口通信的终端可以被称为“无线通信终端”、“无线终端”或“移动终端”。移动终端的示例包括但不限于卫星或蜂窝电话;可以组合蜂窝无线电电话与数据处理、传真以及数据通信能力的个人通信系统(Personal Communications System,PCS)终端;可以包括无线电电话、寻呼机、因特网/内联网接入、Web浏览器、记事簿、日历以及/或全球定位系统(Global Positioning System,GPS)接收器的PDA;以及常规膝上型和/或掌上型接收器或包括无线电电话收发器的其它电子装置。终端可以指接入终端、用户设备(User Equipment,UE)、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol,SIP)电话、无线本地环路(Wireless Local Loop,WLL)站、个人数字处理(Personal Digital Assistant,PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、5G网络中的终端或者未来演进的PLMN中的终端等。
可选地,终端120之间可以进行终端直连(Device to Device,D2D)通信。
可选地,5G通信系统或5G网络还可以称为新无线(New Radio,NR)系统或NR网络。
图1示例性地示出了一个网络设备和两个终端,可选地,该通信系统100可以包括多个网络设备并且每个网络设备的覆盖范围内可以包括其它数量的终端,本申请实施例对此不做限定。
可选地,该通信系统100还可以包括网络控制器、移动管理实体等其他网络实体,本申请实施例对此不作限定。
应理解,本申请实施例中网络/系统中具有通信功能的设备可称为通信设备。以图1示出的通信系统100为例,通信设备可包括具有通信功能的网络设备110和终端120,网络设备110和终端120可以为上文所述的具体设备,此处不再赘述;通信设备还可包括通信系统100中的其他设备,例如网络控制器、移动管理实体等其他网络实体,本申请实施例中对此不做限定。
应理解,本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”,仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系。
为便于理解本申请实施例的技术方案,以下对本申请实施例相关的技术方案进行说明。
NPN中的网元可以独立于PLMN而存在,即NPN拥有自己的网元,如策略控制功能网元(PCF,Policy Control Function)、会话管理功能网元(SMF,Session Management Function)、接入移动性管理网元(AMF,Core Access and Mobility Management Function)、用户平面功能网元(UPF,User Plane Function)、统一数据管理网元(UDM,Unified Data  Management)。并且,NPN有自己的根秘钥、安全算法、签约信息、策略信息等,从而实现与PLMN的隔离。
NPN对于一些业务可能不支持,例如IP多媒体子系统(IP Multimedia Subsystem,IMS)业务。在这种场景下,终端设备需要接入到PLMN中进行特定业务。如图2所示,终端设备通过NPN接入到PLMN,其中,NPN中的接入节点为支持NPN网络的3GPP接入节点(如NR基站、E-UTRA基站),基站小区可以广播支持的NPN网络标识(如PLMN ID+NID),终端设备可以接入该小区并向NPN的核心网执行非接入层(Non-Access Stratum,NAS)过程(如注册过程、PDU会话建立过程等)。NPN中的接入网的过程和核心网的过程都与3GPP协议基本相同。进一步,当终端设备在NPN完成注册并建立了协议数据单元(Protocol Data Unit,PDU)会话后,可以通过PDU会话与PLMN中的非3GPP互通功能网元(Non-3GPP Interworking Function,N3IWF)建立隧道,N3IWF作为连接到PLMN核心网的接入节点,可以承载终端设备与PLMN核心网的NAS消息,使得终端设备基于NPN为管道,完成向PLMN的注册和PLMN PDU会话的建立。如此,终端设备可以使用NPN中的UPF作为出口传输一部分业务数据,同时可以通过PLMN的UPF作为出口传输另一部分业务数据。
图2所示的架构的一种典型场景就是使用PLMN的PDU会话(简称为PLMN PDU会话)传递IMS业务,从而为终端设备提供IMS业务,而其他业务数据(如普通的上网数据)均由NPN的PDU会话(简称为NPN PDU会话)进行传输。
对于IMS业务,在PLMN上实现该业务的方式可能会使用“语音回落”的方式。语音回落是终端设备在5G系统(5G System,5GS)上发起专有QoS Flow(5QI=1)建立时,下一代RAN(NG-RAN)触发的回落过程。进一步,该回落过程可以是5GC不变、RAT改变(NR基站->E-UTRA基站)的回落过程,称之为RAT回落(RAT Fallback);也可以是核心网改变(5GC->EPC),且RAT改变(NR基站->E-UTRA基站)的回落过程。
如果通过图2所示的架构借用PLMN进行IMS业务,那么需要支持上述的语音回落过程。如果要实现对于PLMN通过N3IWF接入的情况的回落机制(或者说重定向或切换机制),需要使用N3IWF来触发向演进分组系统(Evolved Packet System,EPS)的互操作流程。可见,需要一种从非3GPP接入节点(如N3IWF或ePDG)重定向到其他接入节点(如E-UTRAN基站)的机制。为此,提出了本申请实施例的以下技术方案。
图3为本申请实施例提供的重定向方法的流程示意图,如图3所示,所述重定向方法包括以下步骤:
步骤301:终端设备接收第一接入节点触发的重定向消息,所述重定向消息携带第一指示信息,所述第一指示信息用于指示所述终端设备接入第二接入节点;所述第一接入节点和所述第二接入节点中的至少之一为非3GPP接入节点。
本申请实施例中,所述终端设备通过第一网络接入第二网络。在一可选实施方式中,所述第一网络为NPN,所述第二网络为PLMN。如图2所示,终端设备通过NPN接入PLMN。其中,终端设备与NPN之间建立NPN侧的PDU会话(简称为NPN PDU会话),终端设备基于NPN PDU会话与PLMN之间建立PLMN侧的PDU会话(简称为PLMN PDU会话)。
本申请实施例中,由第一接入节点触发重定向流程(或者说互操作流程),使终端设备能够重定向到指定的第二接入节点。其中,网络侧向终端设备下发的重定向消息中携带第一指示信息,可选地,所述第一指示信息通过IPsec消息、或RRC消息、或NAS消息承载。
本申请实施例中,所述第一指示信息包含了第二接入节点(也即目标接入节点)的 相关信息,以下对第一指示信息的具体内容进行说明。
(A)对于所述第二接入节点(也即目标接入节点)为3GPP接入节点的情况,所述第一指示信息包括以下至少一种接入信息:接入频点、接入制式、PLMN标识、子载波间隔、同步信号参数、小区标识、小区系统信息、位置信息、核心网类型。这里,位置信息可以通过以下至少之一来表示:跟踪区标识、小区信息、全球定位系统(Global Positioning System,GPS)坐标。
所述终端设备根据所述第一指示信息确定目标小区,并接入到所述目标小区,完成RRC连接建立;其中,所述目标小区为所述第二接入节点的小区。
(B)对于所述第二接入节点为非3GPP接入节点(如N3IWF、或ePDG、或N3IWF与ePDG的合设网元)的情况,所述第一指示信息包括以下至少一种接入信息:节点标识、全称域名(Fully Qualified Domain Name,FQDN)信息、PLMN标识、核心网类型、节点地址、位置信息。这里,位置信息可以通过以下至少之一来表示:跟踪区标识、小区信息、GPS坐标。
所述终端设备根据所述第一指示信息确定所述第二接入节点的地址信息,基于所述第二接入节点的地址信息建立与所述第二接入节点之间的连接。具体地,所述终端设备可以使用所述第一指示信息(例如,使用节点标识构造的FQDN或直接使用第一指示信息中携带的FQDN)通过DNS机制查询目标节点的具体地址信息(如目标节点的IP地址),以便于与目标节点建立安全隧道,进而向连接目标节点的核心网网元发起NAS交互,完成注册和用户面连接建立。
在一可选实施方式中,所述第一接入节点为非3GPP接入网节点或3GPP无线接入网基站,所述第二接入节点为3GPP无线接入网基站或非3GPP接入网节点。其中,非3GPP接入网节点例如是N3IWF或演进分组数据网关(evolved Packet Data Gateway,ePDG)。
本申请实施例中,终端设备接收第一接入节点触发的重定向消息,以下对重定向消息的触发方式进行详细描述。
Figure PCTCN2019109637-appb-000001
重定向消息的触发方式一
所述重定向消息由所述第一接入节点发送给所述终端设备,其中,所述第一接入节点为第二网络的接入节点,可选地,第二网络例如是PLMN。
这里,第一接入节点向终端设备发送重定向消息,所述重定向消息携带第一指示信息。进一步,所述重定向消息承载在IPsec消息中(如IPsec SA消息)。
在一个示例中,第一接入节点为N3IWF。如图4-1所示,首先,终端设备与N3IWF建立隧道(如IPSec隧道),进一步,该隧道可以通过NPN接入网建立也可以通过其他非3GPP接入网络建立。其次,1、在隧道建立完成后,N3IWF向终端设备发送重定向消息,所述重定向消息包含第一指示信息。最后,终端设备根据第一指示信息接入到指定网络中(即与指定的接入节点建立连接)。
上述示例中,步骤1中的重定向消息可以承载在IPsec消息中。
Figure PCTCN2019109637-appb-000002
重定向消息的触发方式二
所述重定向消息由第三接入节点发送给所述终端设备;其中,所述第三接入节点为第一网络的接入节点。可选地,第一网络例如是NPN。
在一可选实施方式中,所述重定向消息由所述第三接入节点在收到所述第一接入节点发送的重定向请求消息后,发送给所述终端设备,其中,所述第一接入节点为第二网络的接入节点,可选地,第二网络例如是PLMN。进一步,所述重定向消息承载在RRC消息中。可选地,所述RRC消息为RRC连接释放消息。可选地,所述重定向请求消息携带所述第一指示信息。
在一个示例中,第一接入节点为N3IWF。如图4-2所示,首先,终端设备与N3IWF建立隧道(如IPSec隧道),进一步,该隧道可以通过NPN接入网建立也可以通过其他非3GPP接入网络建立。其次,1、N3IWF向NPN接入网发送重定向请求消息,可选地,该重定向请求消息包含第一指示信息。2、NPN接入网(如NG-RAN基站)向终端设备发送重定向消息,所述重定向消息包含第一指示信息,该第一指示信息可以是在步骤1中获得的,也可以是本身就配置在NPN接入网的。最后,终端设备根据第一指示信息释放当前连接并接入到指定网络中(即与指定的接入节点建立连接)。
上述示例中,步骤2中的重定向消息可以是RRC连接释放消息。
Figure PCTCN2019109637-appb-000003
重定向消息的触发方式三
所述重定向消息由第一核心网发送给所述终端设备;其中,所述第一核心网为第一网络的核心网。可选地,第一网络例如是NPN。
在一可选实施方式中,所述重定向消息由所述第一核心网在收到所述第一接入节点发送的重定向请求消息后,发送给所述终端设备,其中,所述第一接入节点为第二网络的接入节点,可选地,第二网络例如是PLMN。进一步,所述重定向消息承载在所述第一网络侧的NAS消息中。可选地,所述重定向请求消息携带所述第一指示信息。
在一个示例中,第一接入节点为N3IWF。如图4-3所示,首先,终端设备与N3IWF建立隧道(如IPSec隧道),进一步,该隧道可以通过NPN接入网建立也可以通过其他非3GPP接入网络建立。其次,1a、N3IWF向PLMN核心网(如5GC或EPC)发送重定向请求消息,可选地,该重定向请求消息包含第一指示信息。2a、PLMN核心网(如5GC或EPC)向终端设备发送重定向消息,所述重定向消息包含第一指示信息,该第一指示信息可以是在步骤1a中获得的,也可以是PLMN核心网自己配置的。最后,终端设备根据第一指示信息接入到指定网络中(即与指定的接入节点建立连接)。
上述示例中,步骤2a中的重定向消息可以是PLMN侧的NAS消息(简称为PLMN NAS消息)。
Figure PCTCN2019109637-appb-000004
重定向消息的触发方式四
所述重定向消息由第二核心网发送给所述终端设备;其中,所述第二核心网为第二网络的核心网。可选地,第二网络例如是PLMN。
在一可选实施方式中,所述重定向消息由所述第二核心网在收到所述第一接入节点发送的重定向请求消息后,发送给所述终端设备,其中,所述第一接入节点为第二网络的接入节点。进一步,所述重定向消息承载在所述第二网络侧的NAS消息中。可选地,所述重定向请求消息携带所述第一指示信息。
在一个示例中,第一接入节点为N3IWF。如图4-3所示,首先,终端设备与N3IWF建立隧道(如IPSec隧道),进一步,该隧道可以通过NPN接入网建立也可以通过其他非3GPP接入网络建立。其次,1b、N3IWF向NPN核心网发送重定向请求消息,可选地,该重定向请求消息包含第一指示信息。2b、NPN核心网向终端设备发送重定向消息,所述重定向消息包含第一指示信息,该第一指示信息可以是在步骤1b中获得的,也可以是NPN核心网自己配置的。最后,终端设备根据第一指示信息接入到指定网络中(即与指定的接入节点建立连接)。
上述示例中,步骤2b中的重定向消息可以是NPN侧的NAS消息(简称为NPN NAS消息)。
需要指出的是,图4-1至图4-3涉及到的示例中,第一接入节点均是以N3IWF作为例子,不局限于此,第一接入节点也可以是ePDG、或N3IWF与ePDG的合设网元(Combined N3IWF/ePDG)。
本申请实施例的技术方案可以应用于语音回落流程,即上述方案中的所述重定向 消息应用于语音回落流程。以下结合具体语音回落流程对本申请实施例的技术方案进行举例说明。
应用场景一
参照图5,图5给出了通过N3IWF触发重定向到PLMN E-UTRAN来完成IMS语音建立流程,如图5所示,该流程包括以下步骤:
1、终端设备完成与NPN接入网的连接和NPN核心网的注册、会话建立。
2、终端设备通过NPN网络的会话与N3IWF建立IPSec通道。
3、终端设备通过IPSec通道承载的NAS消息与PLMN侧的5GC(简称为PLMN5GC)完成注册和PDU会话建立。
4、终端设备起呼时,通过PLMN 5GC的PDU会话向IMS网络发送IMS信令。
5、IMS网络向PLMN的核心网发送专有数据流/专有承载建立请求。
6、PLMN的核心网向N3IWF发送专有数据流/专有承载建立请求。
7、N3IWF触发向E-UTRAN的重定向。
8、终端设备完成与E-UTRAN的RRC连接建立。
9、终端设备完成与PLMN EPC的附着和PDN连接建立,这里,将原PLMN 5GC的PDU会话转换成PLMN EPC上对应的PDN连接,IP地址不变。
10、终端设备与IMS网络完成IMS信令交互,终端设备振铃。
上述流程中,步骤7中的“重定向”方式可以采用本申请上述实施例中的关于“重定向消息的触发方式”的任意一种方式来实现。其中,重定向消息中的第一指示信息的具体内容可以采用本申请上述实施例中的关于“第一指示信息的具体内容”的(A)中的相关描述来实现。
需要指出的是,这里的PLMN 5GC和PLMN EPC的部分网元需要合设,如SMF+PGW-C(即SMF和PGW-C合设)、UPF+PGW-U(即UPF和PGW-U合设)、UDM+HSS(即UDM和HSS合设)、PCF+PCRF(即PCF和PCRF合设)等,以保证IP地址不变的情况下完成5G PDU会话向4G PDN连接的转换,这样可以保证IMS信令不会被中断。
应用场景二
参照图6,图6给出了通过N3IWF触发重定向到ePDG来完成IMS语音建立流程,如图6所示,该流程包括以下步骤:
1、终端设备完成与NPN接入网的连接和NPN核心网的注册、会话建立。
2、终端设备通过NPN网络的会话与N3IWF建立IPSec通道。
3、终端设备通过IPSec通道承载的NAS消息与PLMN侧的5GC(简称为PLMN5GC)完成注册和PDU会话建立。
4、终端设备起呼时,通过PLMN 5GC的PDU会话向IMS网络发送IMS信令。
5、IMS网络向PLMN的核心网发送专有数据流/专有承载建立请求。
6、PLMN的核心网向N3IWF发送专有数据流/专有承载建立请求。
7、N3IWF触发向ePDG的重定向。
8、终端设备完成与ePDG的隧道建立。
9、终端设备通过ePDG在EPS上建立专有承载。
10、终端设备与IMS网络完成IMS信令交互,终端设备振铃。
上述流程中,步骤7中的“重定向”方式可以采用本申请上述实施例中的关于“重定向消息的触发方式”的任意一种方式来实现。其中,重定向消息中的第一指示信息的具体内容可以采用本申请上述实施例中的关于“第一指示信息的具体内容”的(B)中的相关描述来实现。
需要指出的是,这里的PLMN 5GC和PLMN EPC的部分网元需要合设,如SMF+PGW-C(即SMF和PGW-C合设)、UPF+PGW-U(即UPF和PGW-U合设)、UDM+HSS(即UDM和HSS合设)、PCF+PCRF(即PCF和PCRF合设)等,以保证IP地址不变的情况下完成5G PDU会话向4G PDN连接的转换,这样可以保证IMS信令不会被中断。
此外,上述流程中,步骤8-9通过ePDG与EPC建立用户面的承载,通过该承载与IMS交互完成IMS信令流程。这里,终端设备只与EPC建立用户面连接,不存在控制面的NAS信令过程(如附着流程)。
应用场景三
参照图7,图7给出了通过N3IWF触发重定向到ePDG来完成紧急业务建立流程,如图7所示,该流程包括以下步骤:
1、终端设备完成与NPN接入网的连接和NPN核心网的注册、会话建立。
2、终端设备通过NPN网络的会话与N3IWF建立IPSec通道。
3、终端设备通过IPSec通道承载的NAS消息与PLMN侧的5GC(简称为PLMN5GC)完成注册和PDU会话建立。
4、终端设备向PLMN 5GC中的AMF发送业务请求消息(或者说请求回落消息)。
5、PLMN 5GC中的AMF向N3IWF发送请求回落消息(即N2请求消息)。
6、N3IWF触发向E-UTRAN的重定向。
7、终端设备完成与E-UTRAN的RRC连接建立。
8、终端设备完成与PLMN EPC的附着和PDN连接建立,这里,将原PLMN 5GC的PDU会话转换成PLMN EPC上对应的PDN连接,IP地址不变。
9、终端设备与IMS网络之间紧急业务的IMS信令交互。
上述流程中,步骤6中的“重定向”方式可以采用本申请上述实施例中的关于“重定向消息的触发方式”的任意一种方式来实现。其中,重定向消息中的第一指示信息的具体内容可以采用本申请上述实施例中的关于“第一指示信息的具体内容”的(A)中的相关描述来实现。
需要说明的是,本实施例的回落请求是终端设备主动触发的,而不是通过IMS网络向N3IWF请求专有承载建立时触发的。
本申请实施例的技术方案,回落过程大部分是以语音业务回落进行举例说明的,不局限于此,本申请实施例的技术方案(如“重定向消息的触发方式”和“第一指示信息的具体内容”)可以用于任何需要重定向的场景,例如移动场景(比如终端设备从费3GPP接入覆盖范围移动到了3GPP接入覆盖范围)、通过WLAN接入到核心网的场景(不是通过NPN接入)等。
本申请实施例的技术方案,使用场景不局限通过NPN接入PLMN的场景,任何使用非3GPP制式(如WLAN)通过N3IWF/ePDG接入到PLMN的场景均适用。
本申请实施例的技术方案,提出了一种非3GPP接入节点触发重定向的过程,提高了接入目标节点的成功率。此外,本申请实施例的技术方案充分利用现有架构、参数以及信令等,对现有架构影响小,易于实现。再者,本申请实施例的技术方案可以用于N3IWF接入PLMN 5G和ePDG接入PLMN 4G两种情况。本申请实施例的技术方案不仅可以用于N3IWF/ePDG触发向其他3GP接入节点P或非3GPP接入节点重定向的流程,还可以反过来,用于3GPP接入节点(如E-UTRAN基站、NR基站)触发向非3GPP接入节点连接的重定向流程。具体来说,就是3GPP接入节点向终端设备发送RRC连接释放消息中携带非3GPP接入节点的相关接入信息(参照上述关于“第一指示信息的具体内容”的(B)中的相关描述);终端设备根据该信息完成向N3IWF/ePDG的隧道 建立,并可以进一步与N3IWF/ePDG连接的核心网进行NAS交互完成注册和会话建立等。
图8为本申请实施例提供的重定向装置的结构组成示意图一,应用于网络设备,如图8所示,所述重定向装置包括:
接收单元801,用于接收第一接入节点触发的重定向消息,所述重定向消息携带第一指示信息,所述第一指示信息用于指示终端设备接入第二接入节点;
所述第一接入节点和所述第二接入节点中的至少之一为非3GPP接入节点。
在一可选实施方式中,所述第一指示信息通过IPsec消息、或RRC消息、或NAS消息承载。
在一可选实施方式中,所述第二接入节点为3GPP接入节点。
在一可选实施方式中,所述第一指示信息包括以下至少一种接入信息:接入频点、接入制式、PLMN标识、子载波间隔、同步信号参数、小区标识、小区系统信息、位置信息、核心网类型。
在一可选实施方式中,所述装置还包括:
接入单元802,用于根据所述第一指示信息确定目标小区,并接入到所述目标小区;其中,所述目标小区为所述第二接入节点的小区。
在一可选实施方式中,所述第二接入节点为非3GPP接入节点。
在一可选实施方式中,所述第一指示信息包括以下至少一种接入信息:节点标识、FQDN信息、PLMN标识、核心网类型、节点地址、位置信息。
在一可选实施方式中,所述装置还包括:
接入单元802,用于根据所述第一指示信息确定所述第二接入节点的地址信息,基于所述第二接入节点的地址信息建立与所述第二接入节点之间的连接。
在一可选实施方式中,所述重定向消息由所述第一接入节点发送给所述终端设备。
在一可选实施方式中,所述重定向消息承载在IPsec消息中。
在一可选实施方式中,所述重定向消息由第三接入节点发送给所述终端设备;
其中,所述第三接入节点为第一网络的接入节点。
在一可选实施方式中,所述重定向消息由所述第三接入节点在收到所述第一接入节点发送的重定向请求消息后,发送给所述终端设备;
其中,所述第一接入节点为第二网络的接入节点。
在一可选实施方式中,所述重定向消息承载在RRC消息中。
在一可选实施方式中,所述重定向消息由第一核心网发送给所述终端设备;
其中,所述第一核心网为第一网络的核心网。
在一可选实施方式中,所述重定向消息由所述第一核心网在收到所述第一接入节点发送的重定向请求消息后,发送给所述终端设备;
其中,所述第一接入节点为第二网络的接入节点。
在一可选实施方式中,所述重定向消息承载在所述第一网络侧的NAS消息中。
在一可选实施方式中,所述重定向消息由第二核心网发送给所述终端设备;
其中,所述第二核心网为第二网络的核心网。
在一可选实施方式中,所述重定向消息由所述第二核心网在收到所述第一接入节点发送的重定向请求消息后,发送给所述终端设备;
其中,所述第一接入节点为第二网络的接入节点。
在一可选实施方式中,所述重定向消息承载在所述第二网络侧的NAS消息中。
在一可选实施方式中,所述重定向请求消息携带所述第一指示信息。
在一可选实施方式中,所述第一网络为NPN。
在一可选实施方式中,所述第二网络为PLMN。
在一可选实施方式中,所述装置还包括:
接入单元802,用于通过NPN接入PLMN。
在一可选实施方式中,所述第一接入节点为非3GPP接入网节点或3GPP无线接入网基站,所述第二接入节点为3GPP无线接入网基站或非3GPP接入网节点。
在一可选实施方式中,所述重定向消息应用于语音回落流程。
本领域技术人员应当理解,本申请实施例的上述重定向装置的相关描述可以参照本申请实施例的重定向方法的相关描述进行理解。
图9为本申请实施例提供的重定向装置的结构组成示意图二,应用于网络设备(即第一接入节点),如图9所示,所述重定向装置包括:
发送单元901,用于向终端设备发送重定向消息,所述重定向消息携带第一指示信息,所述第一指示信息用于指示所述终端设备接入第二接入节点;
所述第一接入节点和所述第二接入节点中的至少之一为非3GPP接入节点。
在一可选实施方式中,所述第一指示信息通过IPsec消息、或RRC消息、或NAS消息承载。
在一可选实施方式中,所述第二接入节点为3GPP接入节点。
在一可选实施方式中,所述第一指示信息包括以下至少一种接入信息:接入频点、接入制式、PLMN标识、子载波间隔、同步信号参数、小区标识、小区系统信息、位置信息、核心网类型。
在一可选实施方式中,所述第二接入节点为非3GPP接入节点。
在一可选实施方式中,所述第一指示信息包括以下至少一种接入信息:节点标识、FQDN信息、PLMN标识、核心网类型、节点地址、位置信息。
在一可选实施方式中,所述第一接入节点为非3GPP接入网节点或3GPP无线接入网基站,所述第二接入节点为3GPP无线接入网基站或非3GPP接入网节点。
在一可选实施方式中,所述重定向消息应用于语音回落流程。
本领域技术人员应当理解,本申请实施例的上述重定向装置的相关描述可以参照本申请实施例的重定向方法的相关描述进行理解。
图10是本申请实施例提供的一种通信设备1000示意性结构图。该通信设备可以是终端设备,也可以是网络设备(如接入节点),图10所示的通信设备1000包括处理器1010,处理器1010可以从存储器中调用并运行计算机程序,以实现本申请实施例中的方法。
可选地,如图10所示,通信设备1000还可以包括存储器1020。其中,处理器1010可以从存储器1020中调用并运行计算机程序,以实现本申请实施例中的方法。
其中,存储器1020可以是独立于处理器1010的一个单独的器件,也可以集成在处理器1010中。
可选地,如图10所示,通信设备1000还可以包括收发器1030,处理器1010可以控制该收发器1030与其他设备进行通信,具体地,可以向其他设备发送信息或数据,或接收其他设备发送的信息或数据。
其中,收发器1030可以包括发射机和接收机。收发器1030还可以进一步包括天线,天线的数量可以为一个或多个。
可选地,该通信设备1000具体可为本申请实施例的网络设备,并且该通信设备1000可以实现本申请实施例的各个方法中由网络设备实现的相应流程,为了简洁,在此不再赘述。
可选地,该通信设备1000具体可为本申请实施例的移动终端/终端设备,并且该通信设备1000可以实现本申请实施例的各个方法中由移动终端/终端设备实现的相应流程,为了简洁,在此不再赘述。
图11是本申请实施例的芯片的示意性结构图。图11所示的芯片1100包括处理器1110,处理器1110可以从存储器中调用并运行计算机程序,以实现本申请实施例中的方法。
可选地,如图11所示,芯片1100还可以包括存储器1120。其中,处理器1110可以从存储器1120中调用并运行计算机程序,以实现本申请实施例中的方法。
其中,存储器1120可以是独立于处理器1110的一个单独的器件,也可以集成在处理器1110中。
可选地,该芯片1100还可以包括输入接口1130。其中,处理器1110可以控制该输入接口1130与其他设备或芯片进行通信,具体地,可以获取其他设备或芯片发送的信息或数据。
可选地,该芯片1100还可以包括输出接口1140。其中,处理器1110可以控制该输出接口1140与其他设备或芯片进行通信,具体地,可以向其他设备或芯片输出信息或数据。
可选地,该芯片可应用于本申请实施例中的网络设备,并且该芯片可以实现本申请实施例的各个方法中由网络设备实现的相应流程,为了简洁,在此不再赘述。
可选地,该芯片可应用于本申请实施例中的移动终端/终端设备,并且该芯片可以实现本申请实施例的各个方法中由移动终端/终端设备实现的相应流程,为了简洁,在此不再赘述。
应理解,本申请实施例提到的芯片还可以称为系统级芯片,系统芯片,芯片系统或片上系统芯片等。
图12是本申请实施例提供的一种通信系统1200的示意性框图。如图12所示,该通信系统1200包括终端设备1210和网络设备1220。
其中,该终端设备1210可以用于实现上述方法中由终端设备实现的相应的功能,以及该网络设备1220可以用于实现上述方法中由网络设备实现的相应的功能为了简洁,在此不再赘述。
应理解,本申请实施例的处理器可能是一种集成电路芯片,具有信号的处理能力。在实现过程中,上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(Digital Signal Processor,DSP)、专用集成电路(Application Specific Integrated Circuit,ASIC)、现成可编程门阵列(Field Programmable Gate Array,FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成,或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器,闪存、只读存储器,可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器,处理器读取存储器中的信息,结合其硬件完成上述方法的步骤。
可以理解,本申请实施例中的存储器可以是易失性存储器或非易失性存储器,或可包括易失性和非易失性存储器两者。其中,非易失性存储器可以是只读存储器(Read-Only Memory,ROM)、可编程只读存储器(Programmable ROM,PROM)、可擦除可编程只读存储器(Erasable PROM,EPROM)、电可擦除可编程只读存储器 (Electrically EPROM,EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory,RAM),其用作外部高速缓存。通过示例性但不是限制性说明,许多形式的RAM可用,例如静态随机存取存储器(Static RAM,SRAM)、动态随机存取存储器(Dynamic RAM,DRAM)、同步动态随机存取存储器(Synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM,DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM,SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM,DR RAM)。应注意,本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
应理解,上述存储器为示例性但不是限制性说明,例如,本申请实施例中的存储器还可以是静态随机存取存储器(static RAM,SRAM)、动态随机存取存储器(dynamic RAM,DRAM)、同步动态随机存取存储器(synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM,DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(synch link DRAM,SLDRAM)以及直接内存总线随机存取存储器(Direct Rambus RAM,DR RAM)等等。也就是说,本申请实施例中的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本申请实施例还提供了一种计算机可读存储介质,用于存储计算机程序。
可选的,该计算机可读存储介质可应用于本申请实施例中的网络设备,并且该计算机程序使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程,为了简洁,在此不再赘述。
可选地,该计算机可读存储介质可应用于本申请实施例中的移动终端/终端设备,并且该计算机程序使得计算机执行本申请实施例的各个方法中由移动终端/终端设备实现的相应流程,为了简洁,在此不再赘述。
本申请实施例还提供了一种计算机程序产品,包括计算机程序指令。
可选的,该计算机程序产品可应用于本申请实施例中的网络设备,并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程,为了简洁,在此不再赘述。
可选地,该计算机程序产品可应用于本申请实施例中的移动终端/终端设备,并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由移动终端/终端设备实现的相应流程,为了简洁,在此不再赘述。
本申请实施例还提供了一种计算机程序。
可选的,该计算机程序可应用于本申请实施例中的网络设备,当该计算机程序在计算机上运行时,使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程,为了简洁,在此不再赘述。
可选地,该计算机程序可应用于本申请实施例中的移动终端/终端设备,当该计算机程序在计算机上运行时,使得计算机执行本申请实施例的各个方法中由移动终端/终端设备实现的相应流程,为了简洁,在此不再赘述。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的系统、 装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的几个实施例中,应该理解到,所揭露的系统、装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,在本申请各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(Read-Only Memory,)ROM、随机存取存储器(Random Access Memory,RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述,仅为本申请的具体实施方式,但本申请的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本申请揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本申请的保护范围之内。因此,本申请的保护范围应所述以权利要求的保护范围为准。

Claims (76)

  1. 一种重定向方法,所述方法包括:
    终端设备接收第一接入节点触发的重定向消息,所述重定向消息携带第一指示信息,所述第一指示信息用于指示所述终端设备接入第二接入节点;
    所述第一接入节点和所述第二接入节点中的至少之一为非3GPP接入节点。
  2. 根据权利要求1所述的方法,其中,所述第一指示信息通过IPsec消息、或RRC消息、或NAS消息承载。
  3. 根据权利要求1或2所述的方法,其中,所述第二接入节点为3GPP接入节点。
  4. 根据权利要求1或3所述的方法,其中,所述第一指示信息包括以下至少一种接入信息:接入频点、接入制式、公共陆地移动网络PLMN标识、子载波间隔、同步信号参数、小区标识、小区系统信息、位置信息、核心网类型。
  5. 根据权利要求4所述的方法,其中,所述方法还包括:
    所述终端设备根据所述第一指示信息确定目标小区,并接入到所述目标小区;其中,所述目标小区为所述第二接入节点的小区。
  6. 根据权利要求1或2所述的方法,其中,所述第二接入节点为非3GPP接入节点。
  7. 根据权利要求1或6所述的方法,其中,所述第一指示信息包括以下至少一种接入信息:节点标识、全称域名FQDN信息、PLMN标识、核心网类型、节点地址、位置信息。
  8. 根据权利要求7所述的方法,其中,所述方法还包括:
    所述终端设备根据所述第一指示信息确定所述第二接入节点的地址信息,基于所述第二接入节点的地址信息建立与所述第二接入节点之间的连接。
  9. 根据权利要求1至8中任一项所述的方法,其中,所述重定向消息由所述第一接入节点发送给所述终端设备。
  10. 根据权利要求9所述的方法,其中,所述重定向消息承载在IPsec SA消息中。
  11. 根据权利要求1至8中任一项所述的方法,其中,所述重定向消息由第三接入节点发送给所述终端设备;
    其中,所述第三接入节点为第一网络的接入节点。
  12. 根据权利要11所述的方法,其中,所述重定向消息由所述第三接入节点在收到所述第一接入节点发送的重定向请求消息后,发送给所述终端设备;
    其中,所述第一接入节点为第二网络的接入节点。
  13. 根据权利要11或12所述的方法,其中,所述重定向消息承载在无线资源控制RRC消息中。
  14. 根据权利要求1至8中任一项所述的方法,其中,所述重定向消息由第一核心网发送给所述终端设备;
    其中,所述第一核心网为第一网络的核心网。
  15. 根据权利要求14所述的方法,其中,所述重定向消息由所述第一核心网在收到所述第一接入节点发送的重定向请求消息后,发送给所述终端设备;
    其中,所述第一接入节点为第二网络的接入节点。
  16. 根据权利要求14或15所述的方法,其中,所述重定向消息承载在所述第一 网络侧的非接入层NAS消息中。
  17. 根据权利要求1至8中任一项所述的方法,其中,所述重定向消息由第二核心网发送给所述终端设备;
    其中,所述第二核心网为第二网络的核心网。
  18. 根据权利要求17所述的方法,其中,所述重定向消息由所述第二核心网在收到所述第一接入节点发送的重定向请求消息后,发送给所述终端设备;
    其中,所述第一接入节点为第二网络的接入节点。
  19. 根据权利要求17或18所述的方法,其中,所述重定向消息承载在所述第二网络侧的NAS消息中。
  20. 根据权利要求12、15、18中任一项所述的方法,其中,所述重定向请求消息携带所述第一指示信息。
  21. 根据权利要求11至16中任一项所述的方法,其中,所述第一网络为非公共网络NPN。
  22. 根据权利要求12、15、17、18、19中任一项所述的方法,其中,所述第二网络为PLMN。
  23. 根据权利要求21或22所述的方法,其中,所述方法还包括:
    所述终端设备通过NPN接入PLMN。
  24. 根据权利要求1至23中任一项所述的方法,其中,所述第一接入节点为非3GPP接入网节点或3GPP无线接入网基站,所述第二接入节点为3GPP无线接入网基站或非3GPP接入网节点。
  25. 根据权利要求1至24中任一项所述的方法,其中,所述重定向消息应用于语音回落流程。
  26. 一种重定向方法,所述方法包括:
    第一接入节点向终端设备发送重定向消息,所述重定向消息携带第一指示信息,所述第一指示信息用于指示所述终端设备接入第二接入节点;
    所述第一接入节点和所述第二接入节点中的至少之一为非3GPP接入节点。
  27. 根据权利要求26所述的方法,其中,所述第一指示信息通过IPsec消息、或RRC消息、或NAS消息承载。
  28. 根据权利要求26或27所述的方法,其中,所述第二接入节点为3GPP接入节点。
  29. 根据权利要求26或28所述的方法,其中,所述第一指示信息包括以下至少一种接入信息:接入频点、接入制式、PLMN标识、子载波间隔、同步信号参数、小区标识、小区系统信息、位置信息、核心网类型。
  30. 根据权利要求26或27所述的方法,其中,所述第二接入节点为非3GPP接入节点。
  31. 根据权利要求26或30所述的方法,其中,所述第一指示信息包括以下至少一种接入信息:节点标识、FQDN信息、PLMN标识、核心网类型、节点地址、位置信息。
  32. 根据权利要求26至31中任一项所述的方法,其中,所述第一接入节点为非3GPP接入网节点或3GPP无线接入网基站,所述第二接入节点为3GPP无线接入网基站或非3GPP接入网节点。
  33. 根据权利要求26至32中任一项所述的方法,其中,所述重定向消息应用于语音回落流程。
  34. 一种重定向装置,所述装置包括:
    接收单元,用于接收第一接入节点触发的重定向消息,所述重定向消息携带第一指示信息,所述第一指示信息用于指示终端设备接入第二接入节点;
    所述第一接入节点和所述第二接入节点中的至少之一为非3GPP接入节点。
  35. 根据权利要求34所述的装置,其中,所述第一指示信息通过IPsec消息、或RRC消息、或NAS消息承载。
  36. 根据权利要求34或35所述的装置,其中,所述第二接入节点为3GPP接入节点。
  37. 根据权利要求34或36所述的装置,其中,所述第一指示信息包括以下至少一种接入信息:接入频点、接入制式、PLMN标识、子载波间隔、同步信号参数、小区标识、小区系统信息、位置信息、核心网类型。
  38. 根据权利要求37所述的装置,其中,所述装置还包括:
    接入单元,用于根据所述第一指示信息确定目标小区,并接入到所述目标小区;其中,所述目标小区为所述第二接入节点的小区。
  39. 根据权利要求34或35所述的装置,其中,所述第二接入节点为非3GPP接入节点。
  40. 根据权利要求34或39所述的装置,其中,所述第一指示信息包括以下至少一种接入信息:节点标识、FQDN信息、PLMN标识、核心网类型、节点地址、位置信息。
  41. 根据权利要求40所述的装置,其中,所述装置还包括:
    接入单元,用于根据所述第一指示信息确定所述第二接入节点的地址信息,基于所述第二接入节点的地址信息建立与所述第二接入节点之间的连接。
  42. 根据权利要求34至41中任一项所述的装置,其中,所述重定向消息由所述第一接入节点发送给所述终端设备。
  43. 根据权利要求42所述的装置,其中,所述重定向消息承载在IPsec消息中。
  44. 根据权利要求34至41中任一项所述的装置,其中,所述重定向消息由第三接入节点发送给所述终端设备;
    其中,所述第三接入节点为第一网络的接入节点。
  45. 根据权利要求44所述的装置,其中,所述重定向消息由所述第三接入节点在收到所述第一接入节点发送的重定向请求消息后,发送给所述终端设备;
    其中,所述第一接入节点为第二网络的接入节点。
  46. 根据权利要求44或45所述的装置,其中,所述重定向消息承载在RRC消息中。
  47. 根据权利要求34至41中任一项所述的装置,其中,所述重定向消息由第一核心网发送给所述终端设备;
    其中,所述第一核心网为第一网络的核心网。
  48. 根据权利要求47所述的装置,其中,所述重定向消息由所述第一核心网在收到所述第一接入节点发送的重定向请求消息后,发送给所述终端设备;
    其中,所述第一接入节点为第二网络的接入节点。
  49. 根据权利要求47或48所述的装置,其中,所述重定向消息承载在所述第一网络侧的NAS消息中。
  50. 根据权利要求34至41中任一项所述的装置,其中,所述重定向消息由第二核心网发送给所述终端设备;
    其中,所述第二核心网为第二网络的核心网。
  51. 根据权利要求50所述的装置,其中,所述重定向消息由所述第二核心网在 收到所述第一接入节点发送的重定向请求消息后,发送给所述终端设备;
    其中,所述第一接入节点为第二网络的接入节点。
  52. 根据权利要求50或51所述的装置,其中,所述重定向消息承载在所述第二网络侧的NAS消息中。
  53. 根据权利要求45、48、51中任一项所述的装置,其中,所述重定向请求消息携带所述第一指示信息。
  54. 根据权利要求44至49中任一项所述的装置,其中,所述第一网络为NPN。
  55. 根据权利要求45、48、50、51、52中任一项所述的装置,其中,所述第二网络为PLMN。
  56. 根据权利要求54或55所述的装置,其中,所述装置还包括:
    接入单元,用于通过NPN接入PLMN。
  57. 根据权利要求34至56中任一项所述的装置,其中,所述第一接入节点为非3GPP接入网节点或3GPP无线接入网基站,所述第二接入节点为3GPP无线接入网基站或非3GPP接入网节点。
  58. 根据权利要求34至57中任一项所述的装置,其中,所述重定向消息应用于语音回落流程。
  59. 一种重定向装置,所述装置包括:
    发送单元,用于向终端设备发送重定向消息,所述重定向消息携带第一指示信息,所述第一指示信息用于指示所述终端设备接入第二接入节点;
    所述第一接入节点和所述第二接入节点中的至少之一为非3GPP接入节点。
  60. 根据权利要求59所述的装置,其中,所述第一指示信息通过IPsec消息、或RRC消息、或NAS消息承载。
  61. 根据权利要求59或60所述的装置,其中,所述第二接入节点为3GPP接入节点。
  62. 根据权利要求59或61所述的装置,其中,所述第一指示信息包括以下至少一种接入信息:接入频点、接入制式、PLMN标识、子载波间隔、同步信号参数、小区标识、小区系统信息、位置信息、核心网类型。
  63. 根据权利要求59或60所述的装置,其中,所述第二接入节点为非3GPP接入节点。
  64. 根据权利要求59或63所述的装置,其中,所述第一指示信息包括以下至少一种接入信息:节点标识、FQDN信息、PLMN标识、核心网类型、节点地址、位置信息。
  65. 根据权利要求59至64中任一项所述的装置,其中,所述第一接入节点为非3GPP接入网节点或3GPP无线接入网基站,所述第二接入节点为3GPP无线接入网基站或非3GPP接入网节点。
  66. 根据权利要求59至65中任一项所述的装置,其中,所述重定向消息应用于语音回落流程。
  67. 一种终端设备,包括:处理器和存储器,该存储器用于存储计算机程序,所述处理器用于调用并运行所述存储器中存储的计算机程序,执行如权利要求1至25中任一项所述的方法。
  68. 一种网络设备,包括:处理器和存储器,该存储器用于存储计算机程序,所述处理器用于调用并运行所述存储器中存储的计算机程序,执行如权利要求26至33中任一项所述的方法。
  69. 一种芯片,包括:处理器,用于从存储器中调用并运行计算机程序,使得安 装有所述芯片的设备执行如权利要求1至25中任一项所述的方法。
  70. 一种芯片,包括:处理器,用于从存储器中调用并运行计算机程序,使得安装有所述芯片的设备执行如权利要求26至33中任一项所述的方法。
  71. 一种计算机可读存储介质,用于存储计算机程序,所述计算机程序使得计算机执行如权利要求1至25中任一项所述的方法。
  72. 一种计算机可读存储介质,用于存储计算机程序,所述计算机程序使得计算机执行如权利要求26至33中任一项所述的方法。
  73. 一种计算机程序产品,包括计算机程序指令,该计算机程序指令使得计算机执行如权利要求1至25中任一项所述的方法。
  74. 一种计算机程序产品,包括计算机程序指令,该计算机程序指令使得计算机执行如权利要求26至33中任一项所述的方法。
  75. 一种计算机程序,所述计算机程序使得计算机执行如权利要求1至25中任一项所述的方法。
  76. 一种计算机程序,所述计算机程序使得计算机执行如权利要求26至33中任一项所述的方法。
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