WO2019134181A1 - 无线通信方法和设备 - Google Patents
无线通信方法和设备 Download PDFInfo
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- WO2019134181A1 WO2019134181A1 PCT/CN2018/072141 CN2018072141W WO2019134181A1 WO 2019134181 A1 WO2019134181 A1 WO 2019134181A1 CN 2018072141 W CN2018072141 W CN 2018072141W WO 2019134181 A1 WO2019134181 A1 WO 2019134181A1
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- 238000004891 communication Methods 0.000 title claims abstract description 65
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0066—Transmission or use of information for re-establishing the radio link of control information between different types of networks in order to establish a new radio link in the target network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
- H04W60/005—Multiple registrations, e.g. multihoming
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
- H04W36/00222—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies between different packet switched [PS] network technologies, e.g. transferring data sessions between LTE and WLAN or LTE and 5G
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0079—Transmission or use of information for re-establishing the radio link in case of hand-off failure or rejection
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- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
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- H—ELECTRICITY
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Definitions
- the present application relates to the field of communications and, more particularly, to a method and apparatus for wireless communication.
- the terminal equipment moves from the 5G New Radio (NR) network to the 4G Long Term Evolution (LTE) network, it can switch from the 5G core network (5G Core, 5GC) to the packet core evolution (Evolved Packet Core). , EPC) equipment.
- 5G Core 5G Core
- 5GC packet core evolution
- EPC evolved Packet Core
- the registration mode of the terminal device is flexible, and it can be registered in a single system or in multiple systems.
- the embodiment of the present application provides a wireless communication method and device, which can implement network conversion across systems in a flexible registration mode of the terminal device.
- a wireless communication method including:
- the first network device in the first system determines a current registration mode of the terminal device and/or a supported registration mode, the registration mode being a single registration mode for registration in a single system or a dual registration mode for registration in a dual system, wherein The terminal device is currently connected to the first cell in the first system;
- the first network device determines, according to the current registration mode of the terminal device and/or the supported registration mode, a process that the terminal device needs to perform or cannot perform to access the second cell in the second system.
- the network device may determine, according to the current registration mode of the terminal device and/or the supported registration mode, that the terminal device accesses the second system.
- the process that the second cell needs to execute or cannot perform can realize the network conversion across systems in the flexible registration mode.
- the method further includes:
- the first network device receives the first information sent by the terminal device, where the first information is used to indicate a current registration mode and/or a supported registration mode of the terminal device.
- the first information is carried in a registration message or a location update message.
- the method further includes:
- the first network device receives the second information sent by the second network device, where the second information is used to indicate the current registration mode of the terminal device.
- the method further includes:
- the first network device After the terminal device accesses the first cell, the first network device sends a subscription notification to the second network device, where the second network device is in the terminal device After the second system is registered, notifying the first network device;
- the second information indicates that the current mode of the terminal device is a dual registration mode by indicating that the terminal device has been registered to the second system.
- the first network device sends a subscription notification to the second network device, including:
- the first network device sends the subscription notification to the second network device.
- the second network device is a network element of the unified data management UDM+home subscriber server HSS.
- the method further includes:
- the first network device in the first system determines a current registration mode and/or a supported registration mode of the terminal device, including:
- the first network device determines a current registration mode of the terminal device according to a registration status of the terminal device currently in the second system.
- the first network device is an access network device in the first system, where the The third network device is a core network device in the first system;
- the third information is a cause value in the handover request reject message, and the third information is used to indicate that the terminal device is currently registered in the second system.
- the method further includes:
- the first network device sends a handover request to the third network device, where the third network device sends a relocation request to the core network device of the second system by using the N26 interface.
- the process to be performed is Switch process or redirect process.
- the terminal device is currently in a connected state with the first cell, and the first system and When the N26 interface is supported between the second systems, the process that needs to be performed is a handover process.
- the terminal device is currently in a connected state with the first cell, where the first terminal device When the N26 interface is not supported, the process to be executed is the redirection process.
- the terminal device if the terminal device identifies an indication sent by the network side to indicate that the network side supports no N26 interface switching When the information is sent, the terminal device sends an attach request message to the network side after performing the triggered redirect process; or
- the terminal device If the terminal device does not recognize or does not receive the indication information sent by the network side to indicate that the network side supports no N26 interface handover, the terminal device sends a location update TAU request after performing the triggered redirection process. Message.
- the current registration mode of the terminal device is a single registration mode
- the terminal device supports the registration
- the process to be performed is a process of accessing the second cell based on maintaining a connection with the first cell.
- the process to be performed is Redirect process.
- the terminal device sends an attach request to the network side after performing the triggered redirect process Message.
- the first system and the second system support an N26 interface.
- the first network device is a core network device.
- the method further includes:
- the core network device receives a handover request triggered by the access network device in the first system, where the handover request is used to request to switch the currently accessed cell of the terminal device;
- Determining, by the first network device, a process that the terminal device needs to perform or cannot perform according to the current registration mode of the terminal device and/or the supported registration mode including:
- the core network device determines, according to the current registration mode of the terminal device and/or the supported registration mode, that the terminal device needs to perform or cannot perform access to the second cell in the second system. Process.
- the method further includes:
- the core network device sends a handover reject message to the access network device, where the core network device determines that the terminal device accesses the second cell and cannot perform a handover procedure.
- the handover rejection message carries a current registration mode, a supported registration mode, or a required state of the terminal device The process of execution.
- the first network device is an access network device.
- the method further includes:
- the access network device triggers a handover request message to a core network device of the first system
- the access network device triggers, by the terminal device, a process of maintaining a connection with the first cell and accessing the second cell. Or redirect the process.
- the first system is a 5G system
- the second system is a long term evolution LTE system
- the first system is a Long Term Evolution (LTE) system
- the second system is a 5G system.
- LTE Long Term Evolution
- a wireless communication method including:
- the second network device sends the indication information to the first network device in the first system, where the indication information is used to indicate the current registration mode of the terminal device, the supported registration mode, and the terminal device is currently in the second system. At least one of the registration conditions.
- the second network device determines a current registration mode of the terminal device, a supported registration mode, and a current registration status of the terminal device in the second system At least one of the following, including:
- the second network device determines, according to the registration message or the location update message sent by the terminal device, at least the current registration mode of the terminal device, the supported registration mode, and the registration status of the terminal device currently in the second system. One.
- the method further includes:
- the indication information indicates that the current mode of the terminal device is a dual registration mode by indicating that the terminal device has been registered to the second system.
- the second network device is a network element of the unified data management UDM+home subscriber server HSS.
- the second network device is a core network device in the second system, the first The network device is a core network device of the first system;
- the indication information is used to indicate that the terminal device has been registered or deregistered in the second system.
- the second network device is a network element of the unified data management UDM+home subscriber server HSS.
- the second network device is a core network device in the first system, the first The network device is an access network device of the first system.
- the second network device is a network element of the unified data management UDM+home subscriber server HSS.
- the method further includes:
- the second network device receives information sent by the core network device of the second system to indicate that the terminal device is currently registered in the second system.
- a wireless communication method including:
- the terminal device generates indication information, where the indication information is used to indicate a current registration mode and/or a supported registration mode of the terminal device;
- the terminal device sends the indication information to the network device, where the indication information is used to indicate a current registration mode and/or a supported registration mode of the terminal device.
- the first information is carried in a registration message or a location update message.
- a wireless communication device for performing the method of any of the above aspects or any possible implementation thereof.
- the apparatus comprises means for performing the method of any of the above-described first aspect or any of the possible implementations of the first aspect.
- a wireless communication device comprising: a memory, a processor, an input interface, and an output interface.
- the memory, the processor, the input interface, and the output interface are connected by a bus system.
- the memory is for storing instructions for executing the memory stored instructions for performing the method of any of the above aspects or any possible implementation thereof.
- a computer storage medium for storing computer software instructions for performing the method of any of the above aspects or any possible implementation thereof, comprising a program designed to perform the above aspects.
- a computer program product comprising instructions, when executed on a computer, causes the computer to perform the method of any of the above aspects or any alternative implementation thereof.
- FIG. 1 is a schematic diagram of a wireless communication system in accordance with an embodiment of the present application.
- FIG. 2 is a schematic flowchart of a wireless communication method according to an embodiment of the present application.
- FIG. 3 is a schematic flowchart of a wireless communication method according to an embodiment of the present application.
- FIG. 4 is a schematic flowchart of a wireless communication method according to an embodiment of the present application.
- FIG. 5 is a schematic flowchart of a wireless communication method according to an embodiment of the present application.
- FIG. 6 is a schematic flowchart of a wireless communication method according to an embodiment of the present application.
- FIG. 7 is a schematic flowchart of a wireless communication method according to an embodiment of the present application.
- FIG. 8 is a schematic block diagram of a network device according to an embodiment of the present application.
- FIG. 9 is a schematic block diagram of a network device in accordance with an embodiment of the present application.
- FIG. 10 is a schematic block diagram of a terminal device according to an embodiment of the present application.
- FIG. 11 is a schematic block diagram of a system chip in accordance with an embodiment of the present application.
- FIG. 12 is a schematic block diagram of a communication device in accordance with an embodiment of the present application.
- the technical solution of the embodiment of the present application can be applied to a 5G NR communication system.
- FIG. 1 shows a wireless communication system 100 to which an embodiment of the present application is applied.
- the wireless communication system 100 can include an access network device 120 and an access network device 130.
- Access network device 120 and access network device 130 may be devices that communicate with terminal device 110. Illustrated below by access network device 120, access network device 120 can provide communication coverage for a particular geographic area and can communicate with terminal devices (e.g., UEs) located within the coverage area.
- terminal devices e.g., UEs
- the access network device 120 may be an evolved base station (eNB or eNodeB) in an LTE system, for example, an Evolved Universal Terrestrial Radio Access Network (E-UTRAN). device.
- eNB evolved base station
- E-UTRAN Evolved Universal Terrestrial Radio Access Network
- the access network device 130 may be a Next Generation Radio Access Network (NGRAN), or a base station (gNB) in the NR system, or a cloud radio access network (Cloud Radio Access).
- NGRAN Next Generation Radio Access Network
- gNB base station
- Cloud Radio Access Cloud Radio Access
- the wireless controller in the Network, CRAN), or the access network device may be a relay station, an access point, an in-vehicle device, a wearable device, or a network in a future evolved Public Land Mobile Network (PLMN) Equipment, etc.
- PLMN Public Land Mobile Network
- the wireless communication system 100 also includes at least one terminal device 110 located within the coverage of the access network device 120 and the access network device 130.
- Terminal device 110 can be mobile or fixed.
- the terminal device 110 may refer to an access terminal, a user equipment (User Equipment, UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, and a wireless communication.
- the access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless communication.
- SIP Session Initiation Protocol
- WLL Wireless Local Loop
- PDA Personal Digital Assistant
- a functional handheld device a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved PLMN, or the like.
- the wireless communication system 100 also includes a core network device 140 in communication with the access network device 120, and a core network device 150 in communication with the access network device 130.
- the core network device 140 may be an Evolved Packet Core (EPC) device of the LTE network, for example, a core network side data gateway + session management function (Core Packet Gateway+Session Management Function, PGW-C) +SMF) device.
- EPC Evolved Packet Core
- PGW-C Core Packet Gateway+Session Management Function
- the core network device 150 may be a 5GC device, for example, an Access and Mobility Management Function (AMF), and, for example, a Session Management Function (SMF).
- AMF Access and Mobility Management Function
- SMF Session Management Function
- the core network device 140 and the core network device 150 can communicate through the N26 interface.
- the cross-system handover can be implemented by the Attach procedure carrying the handover identifier.
- the AMF may perform information interaction with the SMF.
- the SMF obtains information on the radio access network side from the AMF.
- FIG. 1 exemplarily shows two access network devices, two core network devices and one terminal device.
- the wireless communication system 100 may comprise a plurality of access network devices and each of the access network devices Other numbers of terminal devices may be included in the coverage, which is not limited in this embodiment of the present application.
- the wireless communication system 100 may further include a Mobile Management Entity (MME), a Unified Data Management (UDM), an Authentication Server Function (AUSF), and a user plane function (User).
- MME Mobile Management Entity
- UDM Unified Data Management
- AUSF Authentication Server Function
- UPF user plane function
- PGW Packet Control Function
- SGW Signaling Gateway
- HSS+UDM Home Subscriber Server Unified Data Management
- SMF+PGW-C can realize the functions that SMF and PGW-C can achieve at the same time.
- HSS+UDM can realize the functions that HSS and UDM can achieve at the same time.
- system and “network” are used interchangeably herein.
- the term “and/or” in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations.
- the character "/" in this article generally indicates that the contextual object is an "or" relationship.
- FIG. 2 is a schematic flowchart of a wireless communication method 200 according to an embodiment of the present application.
- the method 200 includes at least some of the following.
- the first network device in the first system determines a current registration mode and/or a supported registration mode of the terminal device, the registration mode being a single registration (SR) mode registered in a single system or in a double
- the system performs a dual registration (DR) mode in which the terminal device is currently connected to the first cell in the first system.
- SR single registration
- DR dual registration
- the first system and the second system may be systems under different communication protocol versions.
- the first system may be a 5G system
- the second system may be a 4G system
- the first system may be a 4G system
- the second system may be a 5G system.
- the first network device may be a core network device, for example, an MME in a 4G system or an AMF in a 5G system, or an access network device, for example, E-UTRAN in 4G, or 5G.
- the following describes how the first network device determines the current registration mode of the terminal device and/or the supported registration mode.
- the first network device receives the first information sent by the terminal device, where the first information is used to indicate a current registration mode and/or a supported registration mode of the terminal device.
- the first information is carried in a registration message or a location update message.
- the terminal device can add the registration mode support situation and the registration mode in which the terminal device is in the registration process.
- the terminal device may carry the registration mode support and the registration mode of the terminal device in the registration request, and send the registration request to the radio access network (Radio Access Network, RAN).
- the RAN may select the AMF and send the registration request to the target AMF, whereby the target AMF may know the terminal device registration mode support situation and the registration mode in which the terminal device is located.
- the terminal device may trigger a location update message to notify the network side of the change of the registration mode.
- the terminal device may indicate, in a registration message or a location update message sent to the first network device, a current registration mode and/or a supported registration mode of the terminal device, where the terminal device may indicate whether the system is registered by other systems.
- the first system is the first system currently registered by the terminal device to implement the indication of the current registration mode of the terminal device. For example, if the terminal device has been registered in another system, or the first system is the second system registered by the terminal device, then the current registration mode of the terminal device is a dual registration mode, or if the terminal device is not registered in another system, or When the first system is the first system registered by the terminal, the current registration mode of the terminal device is the single registration mode.
- the first network device receives the second information sent by the second network device, where the second information is used to indicate the current registration mode of the terminal device.
- the first network device sends a subscription notification to the second network device, to indicate that the second network device is registered in the second system by the terminal device. Afterwards, the first network device is notified; the second information indicates that the current mode of the terminal device is a dual registration mode by indicating that the terminal device has been registered to the second system.
- the subscription notification may also indicate that the first network device is notified when the registration mode of the terminal device changes, for example, from the single registration mode to the dual registration mode, or from the dual registration mode. Change to single registration mode. Therefore, the second network device may send the second information, where the second information is used to indicate the current registration mode of the terminal device, when the registration mode of the terminal device changes.
- the first network device sends the subscription notification to the second network device.
- the network side may detect the parameter in the process that needs to be triggered later, and the terminal device or the second network device does not need to notify the first network device of the terminal device. Changes in registration mode.
- the second network device is a unified data management platform (UDM) + a network element of a Home Subscriber Server (HSS).
- UDM unified data management platform
- HSS Home Subscriber Server
- the first network device receives third information sent by a third network device of the first system, where the third information is used to indicate that the terminal device is currently in the second system Registration status;
- the first network device is an access network device in the first system
- the third network device is a core network device in the first system.
- the first network device is an access network device in a 5G system
- the third network device is an AMF in a 5G system
- the first network device is an access network device in a 4G system
- the third network device is a 4G system.
- MME in.
- the third information is a cause value in the handover request rejection message, and the third information is used to indicate that the terminal device is currently registered in the second system.
- the first network device sends a handover request to the third network device, where the third network device sends a relocation request to the core network device of the second system by using an N26 interface.
- the NG-RAN always processes the UE as the SR mode, that is, the handover request (Handover Required) message is sent to the AMF when the handover is required when the N26 interface is supported, and the AMF continues.
- the handover request (Handover Required) message is sent to the AMF when the handover is required when the N26 interface is supported, and the AMF continues.
- a Relocation request is sent to the MME (as shown at 304 in FIG. 4).
- the MME cannot perform the subsequent process in FIG.
- the EPC system MME when the UE has registered with the 5GC and then successfully registers with the EPC, the EPC system MME notifies the peer AMF through the N26 interface that the UE is already registered in the system (ie, in the DR mode). Similarly, when the UE is deregistered in the EPC system, the same MME can notify the peer AMF through the N26 interface that the UE has been deregistered.
- the AMF may notify the NG-RAN in advance through the N2 interface, or may notify the NG-RAN in the reject message when the NG-RAN triggers the handover request.
- the first system is a 4G system
- the second system is a 5G system
- the embodiment of the present application is not limited thereto, and the first system may also be a 5G system, and the second system is a 4G system.
- the first network device determines, according to the current registration mode of the terminal device and/or the supported registration mode, a process that the terminal device needs to perform or cannot perform to access the second cell in the second system.
- the process may be a redirection process, the handover process or accessing the second cell while maintaining an understanding with the first cell.
- the redirection procedure mentioned herein may be to release the connection with the first cell and establish a connection with the second cell.
- the process that is determined by the first network device and required by the terminal device is a handover process or a redirection process.
- the requirement is The process of execution is the switching process.
- the handover process is described below with reference to FIG. 4, wherein the handover procedure shown in FIG. 4 is a handover from a 5G system to a 4G system, but it should be understood that the embodiment of the present application is not limited thereto, and the handover in the embodiment of the present application may also be It is a switch from a 5G system to a 4G system.
- a Protocol Data Unit (PDU) session and a Quality of Service (QoS) flow are established in a 5G system (5G system).
- PDU Protocol Data Unit
- QoS Quality of Service
- the Next Generation Radio Access Network (NG-RAN) NG-RAN sends a handover request (Handover required) to the AMF.
- NG-RAN Next Generation Radio Access Network
- the AMF sends a Service Message (SM) Content Request (SM Context Request) to the PGW-C+SMF.
- SM Service Message
- Context Request Service Message
- the PGW-C+SMF sends an SM Content Response (SM Context Response) to the AMF.
- SM Context Response SM Context Response
- the AMF sends a Relocation request to the MME.
- the MME sends a Create Session Request to the SGW.
- the SGW sends a Create Session Response to the MME.
- the MME sends a Handover Request to the E-UTRAN.
- the E-UTRAN sends a Handover Request Ack to the MME.
- a create indirect data forwarding tunnel request/response is generated between the MME and the SGW.
- the MME sends a Relocation response to the AMF.
- a Create Indirect Data Forwarding Tunnel Request/Response is generated between the AMF and the PGW-C+SMF.
- N4 Session Modification is performed between the PGW-C+SMF and the Packet Gateway User (PGW-U) + User Plane Function (UPF).
- PGW-C+SMF Packet Gateway User
- PGW-U Packet Gateway User
- UPF User Plane Function
- the AMF sends a Handover command to the NG-RAN.
- the E-UTRAN sends a Handover command to the UE.
- the UE sends a Handover Complete message to the E-UTRAN.
- the U-UTRAN sends a Handover Notify to the MME.
- the MME sends a Modify Bearer Request to the SGW.
- the SGW sends a Modify Bearer Request to the PGW-C+SMF.
- Sx Session Modification is performed between PGW-C+SMF and PGW-U+UPF.
- the PGW-C+SMF sends a modified bearer response to the SGW.
- the SGW sends a Modify Bearer Response to the MME.
- a PGW Initiated dedicated bearer activation is performed between the devices.
- the current registration mode of the terminal device is a single registration mode, and when the first terminal device does not support the N26 interface, the process that needs to be performed is a redirection process.
- the redirection process may be that the terminal device releases the connection with the first cell, and establishes a connection with the second cell, where the operation after performing the redirection process may be as shown in FIG. 5. Shown.
- FIG. 5 is a network conversion from a 5G system to a 4G system, but it should be understood that the embodiment of the present application is not limited thereto, and the embodiment of the present application can also implement the conversion from the 4G system to the 5G system.
- the UE moves from the 5G NR network coverage area to the 4G LTE network coverage area, at which time the UE needs to access from the 5G NR network to the 4G LTE network.
- the UE is in the 5G NR network and the 4G LTE network coverage area at the same time. At this time, the UE abandons the 5G NR network access and selects to access the 4G LTE network.
- the UE triggers a Tracking Area Update (TAU) process, which may also be referred to as a location update procedure.
- TAU Tracking Area Update
- the UE completes registration in the 5GS, then the NG RAN (gNB), the source MME/AMF, the PGW-C+SMF, and the PGW-U+UPF serve the UE.
- the UE sends a TAU request (request) message to the E-UTRAN (eNB).
- the TAU request message includes Globally Unique Temporary UE Identity (GUTI) information, where the GUTI information indicates that the UE accesses from the 5G NR network to the 4G LTE network.
- GUI Globally Unique Temporary UE Identity
- the E-UTRAN sends the TAU request message to the target MME.
- the target MME is a core network element serving the UE after the UE moves to the 4G network.
- the target MME sends a TAU reject message to the UE.
- the TAU reject message is a response message for the TAU request message.
- the target MME after the target MME fails to parse the GUTI information carried in the TAU request message, the target MME sends the TAU reject message to the UE.
- the TAU reject message includes a cause value indicating that the target MME cannot identify the GUTI information and/or the target MME does not support no cross-system interface communication.
- the UE triggers an attach request to the target MME (for forwarding by E-UTRAN) according to the cause value.
- the TAU reject message includes indication information, and the first indication information is used to trigger the UE to send an attach request to the target MME (for forwarding by E-UTRAN).
- the UE sends an attach request carrying the handover identity to the E-UTRAN.
- the handover data identifier is carried in a packet data network (PDN) connection request parameter in the attach request.
- PDN packet data network
- the attach request may carry the native GUTI of the terminal device and an indication that the 5G moves to 4G.
- the attach request includes an Access Point Name (APN) or a Destination Network Name (DNN) corresponding to a PDU/PDN session in the 5G NR network.
- APN Access Point Name
- DNN Destination Network Name
- the E-UTRAN sends the attach request to the target MME.
- the target MME determines, according to the GUTI information included in the TAU request message, that the UE accesses from the 5G NR network to the 4G LTE network.
- the E-UTRAN is initially attached.
- the target MME sends a location update request to the HSS+UDM.
- the HSS+UDM sends a location update response to the target MME.
- the E-UTRAN is initially attached.
- the target MME sends a notification request to the HSS+UDM.
- the HSS+UDM sends a notification response to the target MME.
- the terminal device when the current registration mode of the terminal device is a single registration mode, if the terminal device identifies the indication information sent by the network side to indicate that the network side supports no N26 interface switching, the terminal device is triggered to be executed. After the redirection process, an attach request message is sent to the network side. That is, it can be executed from 405.
- the terminal device when the current registration mode of the terminal device is the single registration mode, if the terminal device does not recognize or does not receive the indication information sent by the network side to indicate that the network side supports no N26 interface switching, the terminal After the device performs the triggered redirect process, the device sends a location update TAU request message. That is, it can be executed from 401.
- the UE If the UE can identify the "support no N26 handover" indication sent by the network side, the UE performs an Attach with Handover flag and carries the APN/DNN corresponding to the PDU Session in the 5GS.
- the triggering network side searches for the associated network element SMF+PGW-C, UPF+PGW-U, and PCF+PCRF according to the APN/DNN used by the UE, so that the set network element maps the SM context of the 4G to implement The consistency of the session IP address.
- the flow that needs to be performed is to maintain a connection with the first cell.
- the process of accessing to the second cell can establish a new attach and PDN connection.
- the network device can trigger the terminal device to access the second cell while maintaining the current connection by using a Radio Resource Control (RRC) reconfiguration message.
- RRC Radio Resource Control
- the process that needs to be performed is a redirection process.
- the terminal device may release the connection with the first cell of the first system and establish a connection with the second cell of the second system.
- the first system and the second system support an N26 interface.
- the terminal device may perform a redirection process and send an attach request after performing the redirection process. That is, it can be executed from 405 shown in FIG.
- the UE does not recognize the "support no N26 handover" indication sent by the network side, if the tracking area update request is directly performed, if the network side does not support the N26 interface, the network side is caused.
- a TAU reject message is sent to the UE, and then the UE will initiate a normal Attach procedure. In this case, the IP address consistency of the session may not be guaranteed.
- the core network device receives a handover request triggered by the access network device in the first system, where the handover request is used to request to switch the currently accessed cell of the terminal device;
- the core network device determines, according to the current registration mode of the terminal device and/or the supported registration mode, a process that the terminal device needs to perform or cannot perform to access the second cell in the second system.
- the core network device determines that the terminal device accesses the second cell and cannot perform the handover process, the core network device sends a handover reject message to the access network device.
- the handover reject message carries a current registration mode of the terminal device, a supported registration mode, or a required execution process.
- the registration mode currently in which the terminal device is located can be reported to the AMF through the NAS message and saved on the AMF.
- the AMF selects according to the current registration mode of the terminal device. If it is a single registration mode, the AMF continues to perform the subsequent procedure of the handover; if it is the dual registration mode, the AMF rejects the handover request message, sends a handover rejection message to the NG-RAN, and indicates in the cause value that the UE is in the dual registration mode or indicates The switching process cannot be performed. After receiving the rejection, the NG-RAN triggers the RRC redirection according to the reason value sent by the AMF.
- the access network device when the process to be performed is a handover process, the access network device triggers a handover request message to the core network device of the first system; when the process to be executed is an attach process or a redirect process, The access network device triggers a process or a redirect procedure for accessing the second cell based on the connection with the first cell to the terminal device.
- the registration mode and/or the dual registration mode supported by the terminal device may be reported to the NG-RAN through the air interface message or sent to the NG-RAN on the N2 interface through the AMF, and saved on the NG-RAN.
- the NG-RAN decides whether to initiate a handover request or an RRC redirection according to the registration mode currently in which the terminal device is located and/or the support status of the dual registration mode.
- FIG. 6 is a schematic flowchart of a wireless communication method 600 according to an embodiment of the present application.
- the method 600 includes at least a portion of the following.
- the second network device determines at least one of a current registration mode of the terminal device, a supported registration mode, and a registration status of the terminal device currently in the second system.
- the second network device sends indication information to the first network device in the first system, where the indication information is used to indicate the current registration mode of the terminal device, the supported registration mode, and the terminal device is currently in the first At least one of the registration status of the second system.
- the second network device determines, according to the registration message or the location update message sent by the terminal device, the current registration mode of the terminal device, the supported registration mode, and the registration status of the terminal device in the second system. At least one of them.
- the second network device receives a subscription notification sent by the network device in the first system, where the subscription notification is used to indicate that the second network device notifies the first network after the terminal device registers with the second system.
- the subscription notification is used to indicate that the second network device notifies the first network after the terminal device registers with the second system
- the device wherein the terminal device is registered in the first system; the indication information indicates that the current mode of the terminal device is a dual registration mode by indicating that the terminal device has been registered to the second system.
- the second network device is a network element of the UDM+HSS.
- the second network device is a core network device in the second system, where the first network device is a core network device of the first system; the indication information is used to indicate the terminal device The second system has been registered or deregistered.
- the second network device is a core network device in the first system
- the first network device is an access network device in the first system.
- the second network device receives information sent by the core network device of the second system to indicate that the terminal device is currently registered in the second system.
- FIG. 7 is a schematic flowchart of a wireless communication method 700 according to an embodiment of the present application.
- the method 700 includes at least a portion of the following.
- the terminal device generates first information, which is used to indicate a current registration mode and/or a supported registration mode of the terminal device.
- the terminal device sends the first information to the network device, where the first information is used to indicate a current registration mode and/or a supported registration mode of the terminal device.
- the first information is carried in a registration message or a location update message.
- FIG. 8 is a schematic block diagram of a network device 800 in accordance with an embodiment of the present application. As shown in Figure 8, the network device 800 includes a first determining unit 810 and a second determining unit 820;
- the first determining unit 810 is configured to: determine a current registration mode of the terminal device and/or a supported registration mode, where the registration mode is a single registration mode registered in a single system or a dual registration mode registered in a dual system, The terminal device is currently connected to the first cell in the first system;
- the second determining unit 820 is configured to: determine, according to the current registration mode of the terminal device, and/or the supported registration mode, that the terminal device needs to perform or cannot perform access to the second cell in the second system. Process.
- the network device may further include a communication unit 830, configured to implement communication with other network devices or terminal devices.
- a communication unit 830 configured to implement communication with other network devices or terminal devices.
- network device 800 in the embodiment of the present application may implement corresponding operations of the first network device in the method embodiment, and details are not described herein for brevity.
- FIG. 9 is a schematic block diagram of a network device 900 in accordance with an embodiment of the present application. As shown in FIG. 9, the network device 900 includes a determining unit 910 and a communication unit 920;
- the determining unit 910 is configured to: determine at least one of a current registration mode of the terminal device, a supported registration mode, and a registration status of the terminal device currently in the second system;
- the communication unit 920 is configured to: send the indication information to the first network device in the first system, where the indication information is used to indicate that the current registration mode of the terminal device, the supported registration mode, and the terminal device are currently in the first At least one of the registration status of the second system.
- network device 900 in the embodiment of the present application may implement corresponding operations of the second network device in the method embodiment. For brevity, details are not described herein again.
- FIG. 10 is a schematic block diagram of a terminal device 1000 according to an embodiment of the present application.
- the terminal device 1000 includes a generating unit 1010 and a communication unit 1020;
- the generating unit 1010 is configured to: generate indication information, where the indication information is used to indicate a current registration mode and/or a supported registration mode of the terminal device;
- the communication unit is configured to: send the indication information to the network device, where the indication information is used to indicate a current registration mode and/or a supported registration mode of the terminal device.
- terminal device 1000 in the embodiment of the present application may implement corresponding operations of the terminal device in the method embodiment, and details are not described herein for brevity.
- FIG. 11 is a schematic structural diagram of a system chip 1100 according to an embodiment of the present application.
- the system chip 1100 of FIG. 11 includes an input interface 1101, an output interface 1102, the processor 1103, and a memory 1104 that can be connected by an internal communication connection line.
- the processor 1103 is configured to execute code in the memory 1104.
- the processor 1103 when the code is executed, the processor 1103 implements a method performed by a terminal device in a method embodiment. For the sake of brevity, it will not be repeated here.
- the processor 1103 when the code is executed, the processor 1103 implements a method performed by the first network device in the method embodiment. For the sake of brevity, it will not be repeated here.
- the processor 1103 when the code is executed, the processor 1103 implements a method performed by a second network device in a method embodiment. For the sake of brevity, it will not be repeated here.
- FIG. 12 is a schematic block diagram of a communication device 1200 in accordance with an embodiment of the present application.
- the communication device 1200 includes a processor 1210 and a memory 1220.
- the memory 1220 can store program code, and the processor 1210 can execute the program code stored in the memory 1220.
- the communication device 1200 can include a transceiver 1230 that can control the transceiver 1230 to communicate externally.
- the processor 1210 can call the program code stored in the memory 1220 to perform the corresponding operations of the terminal device in the method embodiment.
- the processor 1210 can call the program code stored in the memory 1220 to perform the corresponding operations of the terminal device in the method embodiment.
- the processor 1210 can call the program code stored in the memory 1220 to perform the corresponding operations of the network device in the method embodiment.
- the processor 1210 can call the program code stored in the memory 1220 to perform the corresponding operations of the network device in the method embodiment.
- the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability.
- each step of the foregoing method embodiment may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software.
- the processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or the like. Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
- 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 or any conventional processor or the like.
- the steps of the method disclosed in the embodiments of the present application may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
- the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
- the storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method.
- 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 may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory.
- the volatile memory can be a Random Access Memory (RAM) that acts as an external cache.
- RAM Random Access Memory
- many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM).
- SDRAM Double Data Rate SDRAM
- DDR SDRAM Double Data Rate SDRAM
- ESDRAM Enhanced Synchronous Dynamic Random Access Memory
- SLDRAM Synchronous Connection Dynamic Random Access Memory
- DR RAM direct memory bus random access memory
- the disclosed systems, devices, and methods may be implemented in other manners.
- the device embodiments described above are merely illustrative.
- the division of the unit is only a logical function division.
- there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
- the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
- 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, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
- each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
- the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
- the technical solution of the present application which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
- the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
- the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .
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Abstract
本申请实施例提供了一种无线通信方法和设备,可以在终端设备的灵活的注册模式下,实现跨系统的网络转换。该方法包括:第一系统中的第一网络设备确定终端设备当前的注册模式和/或支持的注册模式,所述注册模式为在单系统进行注册的单注册模式或在双系统进行注册的双注册模式,其中,所述终端设备当前已接入到所述第一系统中的第一小区;所述第一网络设备根据所述终端设备当前的注册模式和/或支持的注册模式,确定所述终端设备接入到第二系统中的第二小区所需执行或不能执行的流程。
Description
本申请要求于2018年1月5日提交中国专利局,申请号为PCT/CN2018/071630,发明名称为无线通信方法和设备的PCT专利申请的优先权,其全部内容通过引用合并于此。
本申请涉及通信领域,并且更具体地,涉及一种无线通信方法和设备。
终端设备从5G新无线(New Radio,NR)网络移动到4G长期演进(Long Term Evolution,LTE)网络之后,可以从5G核心网(5G Core,5GC)跨系统切换至分组核心演进(Evolved Packet Core,EPC)设备。
在NR系统中,终端设备的注册模式较为灵活,可以在单个系统进行注册,也可以在多个系统进行注册。
因此,如何在灵活的注册模式下,实现跨系统的网络转换是一项亟待解决的问题。
发明内容
本申请实施例提供了一种无线通信方法和设备,可以在终端设备的灵活的注册模式下,实现跨系统的网络转换。
第一方面,提供了一种无线通信方法,包括:
第一系统中的第一网络设备确定终端设备当前的注册模式和/或支持的注册模式,所述注册模式为在单系统进行注册的单注册模式或在双系统进行注册的双注册模式,其中,所述终端设备当前已接入到所述第一系统中的第一小区;
所述第一网络设备根据所述终端设备当前的注册模式和/或支持的注册模式,确定所述终端设备接入到第二系统中的第二小区所需执行或不能执行的流程。
因此,在本申请实施例中,在跨系统网络转换的情况下,网络设备可以基于终端设备当前的注册模式和/或支持的注册模式,确定所述终端设备接入到第二系统中的第二小区所需执行或不能执行的流程,可以实现在在灵活的注册模式下,跨系统的网络转换。
结合第一方面,在第一方面的一种可能的实现方式中,所述方法还包括:
所述第一网络设备接收所述终端设备发送的第一信息,所述第一信息用于指示所述终端设备当前的注册模式和/或支持的注册模式。
结合第一方面或上述任一种可能的实现方式,在第一方面的另一种可能的实现方式中,所述第一信息承载于注册消息或位置更新消息中。
结合第一方面或上述任一种可能的实现方式,在第一方面的另一种可能的实现方式中,所述方法还包括:
所述第一网络设备接收第二网络设备发送的第二信息,所述第二信息用于指示所述终端设备当前的注册模式。
结合第一方面或上述任一种可能的实现方式,在第一方面的另一种可能的实现方式中,所述方法还包括:
在所述终端设备接入到所述第一小区之后,所述第一网络设备向所述第二网络设备发送订阅通知,用于指示所述第二网络设备在所述终端设备在所述第二系统注册之后,通知所述第一网络设备;
所述第二信息通过指示所述终端设备已注册到所述第二系统,来指示所述终端设备当前的模式为双注册模式。
结合第一方面或上述任一种可能的实现方式,在第一方面的另一种可能的实现方式中,所述第一网络设备向所述第二网络设备发送订阅通知,包括:
在确定所述终端设备支持双注册模式的情况下,所述第一网络设备向所述第二网络设备发送所述订阅通知。
结合第一方面或上述任一种可能的实现方式,在第一方面的另一种可能的实现方式中,所述第二网络设备为统一数据管理UDM+归属用户服务器HSS的网元。
结合第一方面或上述任一种可能的实现方式,在第一方面的另一种可能的实现方式中,所述方法还包括:
所述第一网络设备接收所述第一系统的第三网络设备发送的第三信息,所述第三信息用于指示所述终端设备当前在所述第二系统的注册情况;
第一系统中的第一网络设备确定终端设备当前的注册模式和/或支持的注册模式,包括:
所述第一网络设备根据所述终端设备当前在所述第二系统的注册情况,确定所述终端设备当前的注册模式。
结合第一方面或上述任一种可能的实现方式,在第一方面的另一种可能的实现方式中,所述第一网络设备为所述第一系统中的接入网设备,所述第三网络设备是所述第一系统中的核心网设备;
所述第三信息为切换请求拒绝消息中的原因值,所述第三信息用于指示所述终端设备当前已在所述第二系统中注册。
结合第一方面或上述任一种可能的实现方式,在第一方面的另一种可能的实现方式中,所述方法还包括:
所述第一网络设备向所述第三网络设备发送切换请求,以用于所述第三网络设备通过N26接口向所述第二系统的核心网设备发送重定位请求。
结合第一方面或上述任一种可能的实现方式,在第一方面的另一种可能的实现方式中,在所述终端设备当前的注册模式是单注册模式时,所述需要执行的流程为切换流程或重定向流程。
结合第一方面或上述任一种可能的实现方式,在第一方面的另一种可能的实现方式中,所述终端设备当前与所述第一小区保持连接态,且所述第一系统和所述第二系统之间支持N26接口时,所述需要执行的流程为切换流程。
结合第一方面或上述任一种可能的实现方式,在第一方面的另一种可能的实现方式中,在所述终端设备当前与所述第一小区保持连接态,所述第一终端设备不支持N26接口时,所述需要执行的流程为重定向流程。
结合第一方面或上述任一种可能的实现方式,在第一方面的另一种可能的实现方式中,如果所述终端设备识别网络侧发送的用于指示网络侧支持无N26接口切换的指示信息时,则所述终端设备在执行被触发的重定向流程之后,向所述网络侧发送附着请求消息;或,
如果所述终端设备不识别或未接收到网络侧发送的用于指示网络侧支持无N26接口切换的指示信息时,则所述终端设备在执行被触发的重定向流程之后,发送位置更新TAU请求消息。
结合第一方面或上述任一种可能的实现方式,在第一方面的另一种可能的实现方式中,在所述终端设备当前的注册模式是单注册模式,且所述终端设备支持的注册模式为双注册模式时,所述需要执行的流程为保持与所述第一小区的连接的基础上接入到所述第二小区的流程。
结合第一方面或上述任一种可能的实现方式,在第一方面的另一种可能的实现方式中,在所述终端设备当前的注册模式为双注册模式时,所述需要执行的流程为重定向流程。
结合第一方面或上述任一种可能的实现方式,在第一方面的另一种可能的实现方式中,所述终端设备在执行被触发的重定向流程之后,向所述网络侧发送附着请求消息。
结合第一方面或上述任一种可能的实现方式,在第一方面的另一种可能的实现方式中,所述第一系统和所述第二系统支持N26接口。
结合第一方面或上述任一种可能的实现方式,在第一方面的另一种可能的实现方式中,所述第一网络设备为核心网设备。
结合第一方面或上述任一种可能的实现方式,在第一方面的另一种可能的实现方式中,所述方法还包括:
所述核心网设备接收所述第一系统中的接入网设备触发的切换请求,所述切换请求用于请求对所述终端设备的当前接入的小区进行切换;
所述第一网络设备根据所述终端设备当前的注册模式和/或支持的注册模式,确定所述终端设备接入到第二系统中的第二小区所需执行或不能执行的流程,包括:
响应于切换流程,所述核心网设备基于所述终端设备当前的注册模式和/或支持的注册模式,确定所述终端设备接入到第二系统中的第二小区所需执行或不能执行的流程。
结合第一方面或上述任一种可能的实现方式,在第一方面的另一种可能的实现方式中,所述方法还包括:
在所述核心网设备确定所述终端设备接入到所述第二小区不能执行切换流程的情况下,所述核心网设备向所述接入网设备发送切换拒绝消息。
结合第一方面或上述任一种可能的实现方式,在第一方面的另一种可能的实现方式中,所述切换拒绝消息携带所述终端设备当前的注册模式、支持的注册模式或所需执行的流程。
结合第一方面或上述任一种可能的实现方式,在第一方面的另一种可能的实现方式中,所述第一网络设备为接入网设备。
结合第一方面或上述任一种可能的实现方式,在第一方面的另一种可能的实现方式中,所述方法还 包括:
在所述需要执行的流程为切换流程时,所述接入网设备向所述第一系统的核心网设备触发切换请求消息;
在所述需要执行的流程为附着流程或重定向流程时,所述接入网设备向所述终端设备触发保持与所述第一小区的连接的基础上接入到所述第二小区的流程或重定向流程。
结合第一方面或上述任一种可能的实现方式,在第一方面的另一种可能的实现方式中,所述第一系统为5G系统,所述第二系统为长期演进LTE系统;或,
所述第一系统为长期演进LTE系统,所述第二系统为5G系统。
第二方面,提供了一种无线通信方法,包括:
第二网络设备确定终端设备当前的注册模式、支持的注册模式和所述终端设备当前在第二系统的注册情况中的至少一种;
所述第二网络设备向第一系统中的第一网络设备发送指示信息,所述指示信息用于指示所述终端设备当前的注册模式、支持的注册模式和所述终端设备当前在第二系统的注册情况中的至少一种。
结合第二方面,在第二方面的一种可能的实现方式中,所述第二网络设备确定终端设备当前的注册模式、支持的注册模式和所述终端设备当前在第二系统的注册情况中的至少一种,包括:
所述第二网络设备基于所述终端设备发送的注册消息或位置更新消息,确定所述终端设备当前的注册模式、支持的注册模式和所述终端设备当前在第二系统的注册情况中的至少一种。
结合第一方面或上述任一种可能的实现方式,在第一方面的另一种可能的实现方式中,所述方法还包括:
所述第二网络设备接收所述第一网络设备发送的订阅通知,所述订阅通知用于指示所述第二网络设备在所述终端设备在第二系统注册之后,通知所述第一网络设备,其中,所述终端设备已在所述第一系统中注册;
所述指示信息通过指示所述终端设备已注册到所述第二系统,来指示所述终端设备当前的模式为双注册模式。
结合第一方面或上述任一种可能的实现方式,在第一方面的另一种可能的实现方式中,所述第二网络设备为统一数据管理UDM+归属用户服务器HSS的网元。
结合第三方面或上述任一种可能的实现方式,在第三方面的另一种可能的实现方式中,所述第二网络设备为所述第二系统中的核心网设备,所述第一网络设备为所述第一系统的核心网设备;
所述指示信息用于指示所述终端设备在所述第二系统已注册或去注册。
所述第二网络设备为统一数据管理UDM+归属用户服务器HSS的网元。
结合第三方面或上述任一种可能的实现方式,在第三方面的另一种可能的实现方式中,所述第二网络设备为所述第一系统中的核心网设备,所述第一网络设备为所述第一系统的接入网设备。
所述第二网络设备为统一数据管理UDM+归属用户服务器HSS的网元。
结合第三方面或上述任一种可能的实现方式,在第三方面的另一种可能的实现方式中,所述方法还包括:
所述第二网络设备接收所述第二系统的核心网设备发送的用于指示和所述终端设备当前在第二系统的注册情况的信息。
第三方面,提供了一种无线通信方法,包括:
终端设备生成指示信息,所述指示信息用于指示所述终端设备当前的注册模式和/或支持的注册模式;
所述终端设备向网络设备发送所述指示信息,所述指示信息用于指示所述终端设备当前的注册模式和/或支持的注册模式。
结合第三方面,在第三方面的一种可能的实现方式中,所述第一信息承载于注册消息或位置更新消息中。
第四方面,提供了一种无线通信设备,用于执行上述任一方面或其的任意可能的实现方式中的方法。具体地,该设备包括用于执行上述第一方面或第一方面的任意可能的实现方式中的方法的单元。
第五方面,提供了一种无线通信设备,该设备包括:存储器、处理器、输入接口和输出接口。其中,存储器、处理器、输入接口和输出接口通过总线系统相连。该存储器用于存储指令,该处理器用于执行该存储器存储的指令,用于执行上述任一方面或其任意可能的实现方式中的方法。
第六方面,提供了一种计算机存储介质,用于储存为执行上述任一方面或其任意可能的实现方式中的方法所用的计算机软件指令,其包含用于执行上述方面所设计的程序。
第七方面,提供了一种包括指令的计算机程序产品,当其在计算机上运行时,使得计算机执行上述 任一方面或其任一可选的实现方式中的方法。
图1是根据本申请实施例的无线通信系统的示意性图。
图2是根据本申请实施例的无线通信方法的示意性流程图。
图3是根据本申请实施例的无线通信方法的示意性流程图。
图4是根据本申请实施例的无线通信方法的示意性流程图。
图5是根据本申请实施例的无线通信方法的示意性流程图。
图6是根据本申请实施例的无线通信方法的示意性流程图。
图7是根据本申请实施例的无线通信方法的示意性流程图。
图8是根据本申请实施例的网络设备的示意性框图。
图9是根据本申请实施例的网络设备的示意性框图。
图10是根据本申请实施例的终端设备的示意性框图。
图11是根据本申请实施例的系统芯片的示意性框图。
图12是根据本申请实施例的通信设备的示意性框图。
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清楚、完整地描述。
本申请实施例的技术方案可以应用于5G NR通信系统。
图1示出了本申请实施例应用的无线通信系统100。该无线通信系统100可以包括接入网设备120和接入网设备130。接入网设备120和接入网设备130可以是与终端设备110通信的设备。以下以接入网设备120进行说明,接入网设备120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设备(例如UE)进行通信。
可选地,该接入网设备120可以是LTE系统中的演进的基站(Evolutional NodeB,eNB或eNodeB),例如,演进的通用路基无线接入网(Evolved Universal Terrestrial Radio Access Network,E-UTRAN)设备。
可选地,该接入网设备130可以是下一代无线接入网(Next Generation Radio Access Network,NGRAN),或者是NR系统中的基站(gNB),或者是云无线接入网络(Cloud Radio Access Network,CRAN)中的无线控制器,或者该接入网设备可以为中继站、接入点、车载设备、可穿戴设备,或者未来演进的公共陆地移动网络(Public Land Mobile Network,PLMN)中的网络设备等。
该无线通信系统100还包括位于接入网设备120和接入网设备130覆盖范围内的至少一个终端设备110。终端设备110可以是移动的或固定的。可选地,终端设备110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网络中的终端设备或者未来演进的PLMN中的终端设备等。
该无线通信系统100还包括与接入网设备120进行通信的核心网设备140,以及与接入网设备130进行通信的核心网设备150。可选地,该核心网设备140可以是LTE网络的分组核心演进(Evolved Packet Core,EPC)设备,例如,核心网侧的数据网关+会话管理功能(Core Packet Gateway+Session Management Function,PGW-C+SMF)设备。可选地,该核心网设备150可以是5GC设备,例如,接入与移动性管理功能(Access and Mobility Management Function,AMF),又例如,会话管理功能(Session Management Function,SMF)。
该核心网设备140与核心网设备150之间可以通过N26接口进行通信。
可选地,在终端设备110从5G网络移动到4G网络,且核心网设备140与核心网设备150之间存在N26接口时,可以通过N26接口实现跨系统切换。
可选地,在终端设备110从5G网络移动到4G网络,且核心网设备140与核心网设备150之间不存在N26接口时,可以通过携带切换标识的Attach流程实现跨系统切换。
可选地,在本申请实施例中,AMF可以与SMF进行信息交互,例如,SMF从AMF获取一些无线接入网侧的信息。
图1示例性地示出了两个接入网设备、两个核心网设备和一个终端设备,可选地,该无线通信系统100可以包括多个接入网设备并且每个接入网设备的覆盖范围内可以包括其它数量的终端设备,本申请 实施例对此不做限定。
可选地,该无线通信系统100还可以包括移动管理实体(Mobile Management Entity,MME)、统一数据管理(Unified Data Management,UDM),认证服务器功能(Authentication Server Function,AUSF),用户面功能(User Plane Function,UPF),信令网关(Signaling Gateway,SGW),归属用户服务器+统一数据管理(Home Subscriber Server Unified Data Management,HSS+UDM),PGW-U等其他网络实体,本申请实施例对此不作限定。
应理解,SMF+PGW-C可以同时实现SMF和PGW-C所能实现的功能,HSS+UDM可以同时实现HSS和UDM所能实现的功能。
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。
图2是根据本申请实施例的无线通信方法200的示意性流程图。该方法200包括以下内容中的至少部分内容。
在210中,第一系统中的第一网络设备确定终端设备当前的注册模式和/或支持的注册模式,该注册模式为在单系统进行注册的单注册(single registration,SR)模式或在双系统进行注册的双注册(double registration,DR)模式,其中,该终端设备当前已接入到该第一系统中的第一小区。
可选地,在本申请实施例中,第一系统和第二系统可以是在不同的通信协议版本下的系统。
例如,第一系统可以是5G系统,第二系统可以是4G系统;或者第一系统可以是4G系统,第二系统可以是5G系统。
可选地,该第一网络设备可以是核心网设备,例如,4G系统中的MME或者5G系统中的AMF等,也可以是接入网设备,例如,4G中的E-UTRAN,或者5G中的RAN等。
以下将介绍如何第一网络设备如何确定终端设备当前的注册模式和/或支持的注册模式。
在一种实现方式中,该第一网络设备接收该终端设备发送的第一信息,该第一信息用于指示该终端设备当前的注册模式和/或支持的注册模式。
可选地,该第一信息承载于注册消息或位置更新消息中。
终端设备可以在注册过程中添加注册模式支持情况以及终端设备处于的注册模式。
例如,如图3所示,在501中,终端设备可以在注册请求中,携带添加注册模式支持情况以及终端设备处于的注册模式,并将该注册请求发送给无线接入网(Radio Access Network,RAN)。在502中,RAN可以选择AMF,并将该注册请求发送给目标AMF,由此目标AMF可以获知终端设备注册模式支持情况以及终端设备处于的注册模式。
其中,当终端设备的注册模式发生变化时,则终端设备可以触发位置更新消息,来通知网络侧注册模式的变化。
具体地,终端设备可以在向第一网络设备发送的注册消息或位置更新消息中,指示终端设备当前的注册模式和/或支持的注册模式,其中,终端设备可以通过指示是否在其他系统已注册,或者第一系统是终端设备当前注册的第几个系统来实现指示终端设备当前的注册模式。例如,如果终端设备已在其他系统注册,或者第一系统是终端设备注册的第二个系统时,则终端设备当前的注册模式是双注册模式,或者,如果终端设备未在其他系统注册,或者第一系统是终端注册的第一个系统时,则终端设备当前的注册模式是单注册模式。
在一种实现方式中,该第一网络设备接收第二网络设备发送的第二信息,该第二信息用于指示该终端设备当前的注册模式。
可选地,在该终端设备接入到该第一小区之后,该第一网络设备向该第二网络设备发送订阅通知,用于指示该第二网络设备在该终端设备在该第二系统注册之后,通知该第一网络设备;该第二信息通过指示该终端设备已注册到该第二系统,来指示该终端设备当前的模式为双注册模式。
应理解,在本申请实施例中,订阅通知也可以指示在终端设备的注册模式发生改变时,通知给第一网络设备,例如,从单注册模式改为双注册模式,或者,从双注册模式改为单注册模式。从而第二网络设备可以在终端设备的注册模式发生改变时,发送第二信息,该第二信息用于指示终端设备当前的注册模式。
可选地,在确定该终端设备支持双注册模式的情况下,该第一网络设备向该第二网络设备发送该订阅通知。
具体地,如果终端设备在初始注册中上报不支持双注册模式,则网络侧可以在后面需要触发的流程中检测这个参数,则终端设备或第二网络设备无需向第一网络设备通知终端设备的注册模式的变化。
可选地,该第二网络设备为统一的数据管理平台(United Date Management,UDM)+归属签约用户服务器(Home Subscriber Server,HSS)的网元。
在一种实现方式中,所述第一网络设备接收所述第一系统的第三网络设备发送的第三信息,所述第三信息用于指示所述终端设备当前在所述第二系统的注册情况;
则所述第一网络设备根据所述终端设备当前在所述第二系统的注册情况,确定所述终端设备当前的注册模式。
在该种情况下,所述第一网络设备为所述第一系统中的接入网设备,所述第三网络设备是所述第一系统中的核心网设备。例如,第一网络设备为5G系统中的接入网设备,第三网络设备为5G系统中的AMF;或者,第一网络设备为4G系统中的接入网设备,第三网络设备为4G系统中的MME。
可选地,所述第三信息为切换请求拒绝消息中的原因值,所述第三信息用于指示所述终端设备当前已在所述第二系统中注册。
可选地,所述第一网络设备向所述第三网络设备发送切换请求,以用于所述第三网络设备通过N26接口向所述第二系统的核心网设备发送重定位请求。
例如,在5G系统上,UE完成注册后NG-RAN始终将该UE作为SR模式处理,即在支持N26接口时需要进行切换的情况下正常执行切换请求(Handover Required)消息发给AMF,AMF继续向MME发送重定位请求(Relocation request)(如图4中的304所示)。此时,如果该UE以在4G系统进行了注册,由于MME上也有该UE的上下文,则MME无法执行图4中的后续流程,因此会拒绝该重定位请求,发送拒绝消息给AMF,并包含原因值指示“因为该UE已注册而拒绝”,AMF将拒绝消息发送给NG-RAN,NG-RAN根据该拒绝消息和原因值触发RRC重定向过程。
例如,在5G系统上,当UE已经在5GC注册后,再在EPC注册成功时,EPC系统MME会通过N26接口通知对端AMF该UE已在本系统已注册(即处于DR模式)。类似的当UE在EPC系统去注册后,同样MME可以通过N26接口通知对端AMF该UE已去注册。
此种方式下,当AMF收到UE已在EPC注册的消息后,可以通过N2接口提前告知NG-RAN,也可以在NG-RAN触发切换请求时候在拒绝消息里通知给NG-RAN。
以上已经介绍了第一系统是4G系统,以及第二系统是5G系统为例进行了说明。但本申请实施例并不限于此,第一系统也可以是5G系统,第二系统是4G系统。
在220中,该第一网络设备根据该终端设备当前的注册模式和/或支持的注册模式,确定该终端设备接入到第二系统中的第二小区所需执行或不能执行的流程。
可选地,该流程可以是重定向流程,切换流程或者是在保持与第一小区的理解的基础上接入第二小区。
可选地,此处提到的重定向流程可以是释放与第一小区的连接,并建立与第二小区的连接。
在一种实现方式中,在该终端设备当前的注册模式是单注册模式时,该第一网络设备确定的需要终端设备执行的该流程为切换流程或重定向流程。
可选地,在该终端设备当前的注册模式是单注册模式,且该终端设备当前与该第一小区保持连接态,且该第一系统和该第二系统之间支持N26接口时,该需要执行的流程为切换流程。
以下将结合图4描述切换流程,其中,图4所示的切换流程为从5G系统向4G系统的切换,但应理解,本申请实施例并不限于此,本申请实施例中的切换也可以是从5G系统向4G系统的切换。
在301中,在5G系统(5G system,5GS)中建立协议数据单元(Protocol Data Unit,PDU)会话和服务质量流(Quality of Service,QoS)流。
在302中,下一代无线接入网络(Next Generation Radio Access Network,NG-RAN)NG-RAN向AMF发送切换请求(Handover required)。
在303a中,AMF向PGW-C+SMF发送业务消息(Service Message,SM)内容请求(SM Context Request)。
在303b中,PGW-C+SMF向AMF发送SM内容响应(SM Context Response)。
在304中,AMF向MME发送重定位请求(Relocation request)。
在305中,MME向SGW发送生成会话请求(Create session request)。
在306中,SGW向MME发送生成会话响应(Create session response)。
在307中,MME向E-UTRAN发送切换请求(Handover request)。
在308中,E-UTRAN向MME发送切换请求确认(Handover request Ack)。
在309中,在MME和SGW之间发送生成非直接数据前转隧道请求/响应(Create indirect data forwarding tunnel request/response)。
在310中,MME向AMF发送重定位响应(Relocation response)。
在311a中,在AMF和PGW-C+SMF之间发送生成非直接数据前转隧道请求/响应(Create indirect data forwarding tunnel Request/Response)。
在311b中,PGW-C+SMF和用户面分组网关(Packet Gateway User,PGW-U)+用户面功能(User Plane Function,UPF)之间进行N4会话修改(N4Session Modification)。
在312a中,AMF向NG-RAN发送切换命令(Handover command)。
在312b中,E-UTRAN向UE发送切换命令(Handover command)。
在313a中,UE向E-UTRAN发送切换完成消息(Handover Complete)。
在313b中,U-UTRAN向MME发送切换通知(Handover Notify)。
在314中,MME向SGW发送修改承载请求(Modify bearer Request)。
在315a中,SGW向PGW-C+SMF发送修改承载请求(Modify bearer Request)。
在315b中,PGW-C+SMF和PGW-U+UPF之间进行Sx会话修改(Sx Session Modification)。
在316中,PGW-C+SMF向SGW发送修改承载响应
在317中,SGW向MME发送修改承载响应。
在318中,设备之间进行PGW初始的专用的承载激活(PGW Initiated dedicated bearer activation)。
可选地,在该终端设备当前的注册模式是单注册模式,且在该第一终端设备不支持N26接口时,该需要执行的流程为重定向流程。
可选地,在本申请实施例中,重定向流程可以是终端设备释放与第一小区的连接,并且建立与第二小区的连接,其中,在执行完重定向流程之后的操作可以如图5所示。
应理解,也可以将图5所示的流程作为重定向流程的至少部分操作。
还应理解,图5所示的流程为从5G系统向4G系统的网络转换,但应理解,本申请实施例并不限于此,本申请实施例也可以实现从4G系统向5G系统的转换。
例如,UE从5G NR网络覆盖区域移动至4G LTE网络覆盖区域,此时,UE需要从5G NR网络接入至4G LTE网络。
又例如,UE同时处于5G NR网络和4G LTE网络覆盖区域,此时,UE放弃5G NR网络接入,选择接入4G LTE网络。
在401中,UE触发追踪区更新(Tracking Area Update,TAU)流程,也可以称为位置更新流程。
应理解,UE在5GS中完成注册,则NG RAN(gNB)、源MME/AMF、PGW-C+SMF和PGW-U+UPF服务于UE。
在402中,UE向E-UTRAN(eNB)发送TAU请求(request)消息。
可选地,该TAU请求消息包括全球唯一临时用户标识(Globally Unique Temporary UE Identity,GUTI)信息,该GUTI信息指示UE从5G NR网络接入至4G LTE网络。
在403中,E-UTRAN向目标MME发送该TAU请求消息。
应理解,目标MME为UE移动到4G网络之后服务于UE的核心网网元。
在404中,目标MME向UE发送TAU拒绝消息。
该TAU拒绝消息为针对该TAU请求消息的响应消息。
可选地,目标MME在解析该TAU请求消息中携带的GUTI信息失败之后,向UE发送该TAU拒绝(reject)消息。
可选地,该TAU拒绝消息包括原因值,该原因值指示目标MME无法识别该GUTI信息和/或目标MME不支持无跨系统接口通信。可选地,UE根据该原因值触发向目标MME(通过E-UTRAN转发)发送附着(attach)请求。
可选地,该TAU拒绝消息包括指示信息,该第一指示信息用于触发UE向目标MME(通过E-UTRAN转发)发送附着(attach)请求。
在405中,UE向E-UTRAN发送携带切换标识的附着请求。
可选地,该附着请求中的分组数据网络(Packet Data Network,PDN)连接(connectivity)请求参数中携带该切换(handover)标识。
可选地,该附着请求可以携带终端设备的原生GUTI以及5G移动到4G的指示。
可选地,该附着请求包括针对5G NR网络中的PDU/PDN会话(session)所对应的接入点名称(Access Point Name,APN)或目标网络名称(Destination Network Name,DNN)。
在406中,E-UTRAN向目标MME发送该附着请求。
可选地,目标MME根据该TAU请求消息包括的GUTI信息,确定UE从5G NR网络接入至4G LTE网络。
在407中,E-UTRAN初始附着。
在408中,目标MME向HSS+UDM发送位置更新请求。
在409中,HSS+UDM向目标MME发送位置更新响应。
在410中,E-UTRAN初始附着。
在411中,目标MME向HSS+UDM发送通知请求。
在412中,HSS+UDM向目标MME发送通知响应。
在413中,进行UE请求的PDN连接。
可选地,在该终端设备当前的注册模式是单注册模式时,如果该终端设备识别网络侧发送的用于指示网络侧支持无N26接口切换的指示信息时,则该终端设备在执行被触发的重定向流程之后,向该网络侧发送附着请求消息。也即可以从405开始执行。
可选地,在该终端设备当前的注册模式是单注册模式时,如果该终端设备不识别或未接收到网络侧发送的用于指示网络侧支持无N26接口切换的指示信息时,则该终端设备在执行被触发的重定向流程之后,发送位置更新TAU请求消息。也即可以从401开始执行。
其中,在从401开始执行的情况下,若UE可以识别网络侧发来的“支持无N26切换”指示,则UE执行Attach with Handover flag,并携带5GS中PDU Session对应的APN/DNN,该消息将触发网络侧根据UE所用的APN/DNN来查找所在的合设网元SMF+PGW-C、UPF+PGW-U、PCF+PCRF,从而让合设的网元映射出4G的SM上下文,实现会话IP地址的一致性。
在一种实现方式中,在该终端设备当前的注册模式是单注册模式,且该终端设备支持的注册模式为双注册模式时,该需要执行的流程为保持与该第一小区的连接的基础上接入到该第二小区的流程。具体地,终端设备可以建立新的附着和PDN连接。其中,网络设备可以通过无线资源控制(Radio Resource Control,RRC)重配置消息触发终端设备在保持当前连接的情况下,接入到第二小区。
在一种实现方式中,在该终端设备当前的注册模式为双注册模式时,该需要执行的流程为重定向流程。具体地,终端设备可以释放与第一系统的第一小区的连接,并且建立与第二系统的第二小区的连接。
在该种实现方式中,该第一系统和该第二系统支持N26接口。
也就是说,即使第一系统和第二系统支持N26接口,如果该终端设备当前的注册模式为双注册模式,则终端设备可以执行重定向流程,并在执行完重定向流程之后,发送附着请求,也即可以从图4所示的405开始执行。
具体地,UE若不识别网络侧发来的“支持无N26切换”指示,如果直接做追踪区更新请求(Tracking Area Update request),此时,如果网络侧不支持N26接口,则会导致网络侧向UE发送TAU拒绝消息,然后UE将发起普通Attach流程。该情况下,会话的IP地址一致性可能无法保障
以下以第一网络设备为核心网设备为例进行说明。
可选地,该核心网设备接收该第一系统中的接入网设备触发的切换请求,该切换请求用于请求对该终端设备的当前接入的小区进行切换;
响应于切换流程,该核心网设备基于该终端设备当前的注册模式和/或支持的注册模式,确定该终端设备接入到第二系统中的第二小区所需执行或不能执行的流程。
可选地,在该核心网设备确定该终端设备接入到该第二小区不能执行切换流程的情况下,该核心网设备向该接入网设备发送切换拒绝消息。
可选地,该切换拒绝消息携带该终端设备当前的注册模式、支持的注册模式或所需执行的流程。
具体地,终端设备当前所处的注册模式可以通过NAS消息上报给AMF并保存在AMF上。NG-RAN触发切换请求(Handover required)命令时,AMF根据终端设备当前的注册模式来选择。如果是单注册模式,则AMF继续执行切换的后续流程;如果是双注册模式,则AMF拒绝切换请求消息,向NG-RAN发送切换拒绝消息,在原因值中指明该UE处于双注册模式或指明不能进行切换流程。NG-RAN接到拒绝后,根据AMF发送的的原因值触发RRC重定向。
以下以第一网络设备为接入网设备为例进行说明。
可选地,在该需要执行的流程为切换流程时,该接入网设备向该第一系统的核心网设备触发切换请求消息;在该需要执行的流程为附着流程或重定向流程时,该接入网设备向该终端设备触发保持与该第一小区的连接的基础上接入到该第二小区的流程或重定向流程。
可选地,终端设备当前所处的注册模式和/或双注册模式的支持情况可以通过空口消息上报给NG-RAN或通过AMF在N2接口上发送给NG-RAN,并保存在NG-RAN上。NG-RAN根据终端设备当前所处的注册模式和/或双注册模式的支持情况决定发起切换请求还是RRC重定向。
应理解,在本申请实施例中,上述以第一系统为5G系统,第二系统为4G系统为例进行的说明,但应理解,本申请实施例并不限于此。
图6是根据本申请实施例的无线通信方法600的示意性流程图。该方法600包括以下内容中的至 少部分内容。
在610中,第二网络设备确定终端设备当前的注册模式、支持的注册模式和所述终端设备当前在第二系统的注册情况中的至少一种。
在620中,该第二网络设备向第一系统中的第一网络设备发送指示信息,该指示信息用于指示所述终端设备当前的注册模式、支持的注册模式和所述终端设备当前在第二系统的注册情况中的至少一种。
可选地,该第二网络设备基于该终端设备发送的注册消息或位置更新消息,确定所述终端设备当前的注册模式、支持的注册模式和所述终端设备当前在第二系统的注册情况中的至少一种。
可选地,该第二网络设备接收该第一系统中的网络设备发送的订阅通知,该订阅通知用于指示该第二网络设备在该终端设备在第二系统注册之后,通知该第一网络设备,其中,该终端设备已在该第一系统中注册;该指示信息通过指示该终端设备已注册到该第二系统,来指示该终端设备当前的模式为双注册模式。
可选地,该第二网络设备为UDM+HSS的网元。
可选地,所述第二网络设备为所述第二系统中的核心网设备,所述第一网络设备为所述第一系统的核心网设备;所述指示信息用于指示所述终端设备在所述第二系统已注册或去注册。
可选地,所述第二网络设备为所述第一系统中的核心网设备,所述第一网络设备为所述第一系统的接入网设备。
可选地,所述第二网络设备接收所述第二系统的核心网设备发送的用于指示和所述终端设备当前在第二系统的注册情况的信息。
图7是根据本申请实施例的无线通信方法700的示意性流程图。该方法700包括以下内容中的至少部分内容。
在710中,终端设备生成第一信息,该第一信息用于指示该终端设备当前的注册模式和/或支持的注册模式。
在720中,终端设备向网络设备发送该第一信息,该第一信息用于指示该终端设备当前的注册模式和/或支持的注册模式。
可选地,该第一信息承载于注册消息或位置更新消息中。
应理解,本申请实施例的上述方法在一些情况下可以组合使用,为了简洁,在此不再赘述。
图8是根据本申请实施例的网络设备800的示意性框图。如图8所示,该网络设备800包括第一确定单元810和第二确定单元820;
所述第一确定单元810用于:确定终端设备当前的注册模式和/或支持的注册模式,所述注册模式为在单系统进行注册的单注册模式或在双系统进行注册的双注册模式,其中,所述终端设备当前已接入到所述第一系统中的第一小区;
所述第二确定单元820用于:根据所述终端设备当前的注册模式和/或支持的注册模式,确定所述终端设备接入到第二系统中的第二小区所需执行或不能执行的流程。
可选地,该网络设备还可以包括通信单元830,用于实现与其他网络设备或终端设备的通信。
应理解,本申请实施例中的网络设备800可以实现方法实施例中的第一网络设备的相应操作,为了简洁,在此不再赘述。
图9是根据本申请实施例的网络设备900的示意性框图。如图9所示,该网络设备900包括确定单元910和通信单元920;其中,
所述确定单元910用于:确定终端设备当前的注册模式、支持的注册模式和所述终端设备当前在第二系统的注册情况中的至少一种;
所述通信单元920用于:向第一系统中的第一网络设备发送指示信息,所述指示信息用于指示所述终端设备当前的注册模式、支持的注册模式和所述终端设备当前在第二系统的注册情况中的至少一种。
应理解,本申请实施例中的网络设备900可以实现方法实施例中的第二网络设备的相应操作,为了简洁,在此不再赘述。
图10是根据本申请实施例的终端设备1000的示意性框图。如图10所示,该终端设备1000包括生成单元1010和通信单元1020;
所述生成单元1010用于:生成指示信息,所述指示信息用于指示所述终端设备当前的注册模式和/或支持的注册模式;
所述通信单元用于:向网络设备发送所述指示信息,所述指示信息用于指示所述终端设备当前的注册模式和/或支持的注册模式。
应理解,本申请实施例中的终端设备1000可以实现方法实施例中的终端设备的相应操作,为了简洁,在此不再赘述。
图11是本申请实施例的系统芯片1100的一个示意性结构图。图11的系统芯片1100包括输入接口1101、输出接口1102、所述处理器1103以及存储器1104之间可以通过内部通信连接线路相连,所述处理器1103用于执行所述存储器1104中的代码。
可选地,当所述代码被执行时,所述处理器1103实现方法实施例中由终端设备执行的方法。为了简洁,在此不再赘述。
可选地,当所述代码被执行时,所述处理器1103实现方法实施例中由第一网络设备执行的方法。为了简洁,在此不再赘述。
可选地,当所述代码被执行时,所述处理器1103实现方法实施例中由第二网络设备执行的方法。为了简洁,在此不再赘述。
图12是根据本申请实施例的通信设备1200的示意性框图。如图12所示,该通信设备1200包括处理器1210和存储器1220。其中,该存储器1220可以存储有程序代码,该处理器1210可以执行该存储器1220中存储的程序代码。
可选地,如图12所示,该通信设备1200可以包括收发器1230,处理器1210可以控制收发器1230对外通信。
可选地,该处理器1210可以调用存储器1220中存储的程序代码,执行方法实施例中的终端设备的相应操作,为了简洁,在此不再赘述。
可选地,该处理器1210可以调用存储器1220中存储的程序代码,执行方法实施例中的网络设备的相应操作,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。
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 (68)
- 一种无线通信方法,其特征在于,包括:第一系统中的第一网络设备确定终端设备当前的注册模式和/或支持的注册模式,所述注册模式为在单系统进行注册的单注册模式或在双系统进行注册的双注册模式,其中,所述终端设备当前已接入到所述第一系统中的第一小区;所述第一网络设备根据所述终端设备当前的注册模式和/或支持的注册模式,确定所述终端设备接入到第二系统中的第二小区所需执行或不能执行的流程。
- 根据权利要求1所述的方法,其特征在于,所述方法还包括:所述第一网络设备接收所述终端设备发送的第一信息,所述第一信息用于指示所述终端设备当前的注册模式和/或支持的注册模式。
- 根据权利要求2所述的方法,其特征在于,所述第一信息承载于注册消息或位置更新消息中。
- 根据权利要求1所述的方法,其特征在于,所述方法还包括:所述第一网络设备接收第二网络设备发送的第二信息,所述第二信息用于指示所述终端设备当前的注册模式。
- 根据权利要求4所述的方法,其特征在于,所述方法还包括:在所述终端设备接入到所述第一小区之后,所述第一网络设备向所述第二网络设备发送订阅通知,用于指示所述第二网络设备在所述终端设备在所述第二系统注册之后,通知所述第一网络设备;所述第二信息通过指示所述终端设备已注册到所述第二系统,来指示所述终端设备当前的模式为双注册模式。
- 根据权利要求5所述的方法,其特征在于,所述第一网络设备向所述第二网络设备发送订阅通知,包括:在确定所述终端设备支持双注册模式的情况下,所述第一网络设备向所述第二网络设备发送所述订阅通知。
- 根据权利要求4至6中任一项所述的方法,其特征在于,所述第二网络设备为统一数据管理UDM+归属用户服务器HSS的网元。
- 根据权利要求1所述的方法,其特征在于,所述方法还包括:所述第一网络设备接收所述第一系统的第三网络设备发送的第三信息,所述第三信息用于指示所述终端设备当前在所述第二系统的注册情况;第一系统中的第一网络设备确定终端设备当前的注册模式和/或支持的注册模式,包括:所述第一网络设备根据所述终端设备当前在所述第二系统的注册情况,确定所述终端设备当前的注册模式。
- 根据权利要求8所述的方法,其特征在于,其特征在于,所述第一网络设备为所述第一系统中的接入网设备,所述第三网络设备是所述第一系统中的核心网设备;所述第三信息为切换请求拒绝消息中的原因值,所述第三信息用于指示所述终端设备当前已在所述第二系统中注册。
- 根据权利要求9所述的方法,其特征在于,所述方法还包括:所述第一网络设备向所述第三网络设备发送切换请求,以用于所述第三网络设备通过N26接口向所述第二系统的核心网设备发送重定位请求。
- 根据权利要求1至10中任一项所述的方法,其特征在于,在所述终端设备当前的注册模式是单注册模式时,所述需要执行的流程为切换流程或重定向流程。
- 根据权利要求11所述的方法,其特征在于,所述终端设备当前与所述第一小区保持连接态,且所述第一系统和所述第二系统之间支持N26接口时,所述需要执行的流程为切换流程。
- 根据权利要求11所述的方法,其特征在于,在所述终端设备当前与所述第一小区保持连接态,所述第一终端设备不支持N26接口时,所述需要执行的流程为重定向流程。
- 根据权利要求13所述的方法,其特征在于,如果所述终端设备识别网络侧发送的用于指示网络侧支持无N26接口切换的指示信息时,则所述终端设备在执行被触发的重定向流程之后,向所述网络侧发送附着请求消息;或,如果所述终端设备不识别或未接收到网络侧发送的用于指示网络侧支持无N26接口切换的指示信息时,则所述终端设备在执行被触发的重定向流程之后,发送位置更新TAU请求消息。
- 根据权利要求1至10中任一项所述的方法,其特征在于,在所述终端设备当前的注册模式是单注册模式,且所述终端设备支持的注册模式为双注册模式时,所述需要执行的流程为保持与所述第一小区的连接的基础上接入到所述第二小区的流程。
- 根据权利要求1至10中任一项所述的方法,其特征在于,在所述终端设备当前的注册模式为双注册模式时,所述需要执行的流程为重定向流程。
- 根据权利要求16所述的方法,其特征在于,所述终端设备在执行被触发的重定向流程之后,向所述网络侧发送附着请求消息。
- 根据权利要求16或17所述的方法,其特征在于,所述第一系统和所述第二系统支持N26接口。
- 根据权利要求1至18中任一项所述的方法,其特征在于,所述第一网络设备为核心网设备。
- 根据权利要求19所述的方法,其特征在于,所述方法还包括:所述核心网设备接收所述第一系统中的接入网设备触发的切换请求,所述切换请求用于请求对所述终端设备的当前接入的小区进行切换;所述第一网络设备根据所述终端设备当前的注册模式和/或支持的注册模式,确定所述终端设备接入到第二系统中的第二小区所需执行或不能执行的流程,包括:响应于切换流程,所述核心网设备基于所述终端设备当前的注册模式和/或支持的注册模式,确定所述终端设备接入到第二系统中的第二小区所需执行或不能执行的流程。
- 根据权利要求20所述的方法,其特征在于,所述方法还包括:在所述核心网设备确定所述终端设备接入到所述第二小区不能执行切换流程的情况下,所述核心网设备向所述接入网设备发送切换拒绝消息。
- 根据权利要求21所述的方法,其特征在于,所述切换拒绝消息携带所述终端设备当前的注册模式、支持的注册模式或所需执行的流程。
- 根据权利要求1至18中任一项所述的方法,其特征在于,所述第一网络设备为接入网设备。
- 根据权利要求23所述的方法,其特征在于,所述方法还包括:在所述需要执行的流程为切换流程时,所述接入网设备向所述第一系统的核心网设备触发切换请求消息;在所述需要执行的流程为附着流程或重定向流程时,所述接入网设备向所述终端设备触发保持与所述第一小区的连接的基础上接入到所述第二小区的流程或重定向流程。
- 根据权利要求1至24中任一项所述的方法,其特征在于,所述第一系统为5G系统,所述第二系统为长期演进LTE系统;或,所述第一系统为长期演进LTE系统,所述第二系统为5G系统。
- 一种无线通信方法,其特征在于,包括:第二网络设备确定终端设备当前的注册模式、支持的注册模式和所述终端设备当前在第二系统的注册情况中的至少一种;所述第二网络设备向第一系统中的第一网络设备发送指示信息,所述指示信息用于指示所述终端设备当前的注册模式、支持的注册模式和所述终端设备当前在第二系统的注册情况中的至少一种。
- 根据权利要求26所述的方法,其特征在于,所述第二网络设备确定终端设备当前的注册模式和/或支持的注册模式,包括:所述第二网络设备基于所述终端设备发送的注册消息或位置更新消息,确定所述终端设备当前的注册模式、支持的注册模式和所述终端设备当前在第二系统的注册情况中的至少一种。
- 根据权利要求26或27所述的方法,其特征在于,所述方法还包括:所述第二网络设备接收所述第一网络设备发送的订阅通知,所述订阅通知用于指示所述第二网络设备在所述终端设备在第二系统注册之后,通知所述第一网络设备,其中,所述终端设备已在所述第一系统中注册;所述指示信息通过指示所述终端设备已注册到所述第二系统,来指示所述终端设备当前的模式为双注册模式。
- 根据权利要求26至28中任一项所述的方法,其特征在于,所述第二网络设备为统一数据管理UDM+归属用户服务器HSS的网元。
- 根据权利要求26所述的方法,其特征在于,所述第二网络设备为所述第二系统中的核心网设备,所述第一网络设备为所述第一系统的核心网设备;所述指示信息用于指示所述终端设备在所述第二系统已注册或去注册。
- 根据权利要求26所述的方法,其特征在于,所述第二网络设备为所述第一系统中的核心网设备,所述第一网络设备为所述第一系统的接入网设备。
- 根据权利要求31所述的方法,其特征在于,所述方法还包括:所述第二网络设备接收所述第二系统的核心网设备发送的用于指示和所述终端设备当前在第二系 统的注册情况的信息。
- 一种无线通信方法,其特征在于,包括:终端设备生成第一信息,所述第一信息用于指示所述终端设备当前的注册模式和/或支持的注册模式;所述终端设备向网络设备发送所述第一信息,所述第一信息用于指示所述终端设备当前的注册模式和/或支持的注册模式。
- 根据权利要求33所述的方法,其特征在于,所述第一信息承载于注册消息或位置更新消息中。
- 一种网络设备,其特征在于,所述网络设备为第一系统中的第一网络设备,包括第一确定单元和第二确定单元;所述第一确定单元用于:确定终端设备当前的注册模式和/或支持的注册模式,所述注册模式为在单系统进行注册的单注册模式或在双系统进行注册的双注册模式,其中,所述终端设备当前已接入到所述第一系统中的第一小区;所述第二确定单元用于:根据所述终端设备当前的注册模式和/或支持的注册模式,确定所述终端设备接入到第二系统中的第二小区所需执行或不能执行的流程。
- 根据权利要求35所述的设备,其特征在于,所述网络设备还包括通信单元,用于:接收所述终端设备发送的第一信息,所述第一信息用于指示所述终端设备当前的注册模式和/或支持的注册模式。
- 根据权利要求36所述的设备,其特征在于,所述第一信息承载于注册消息或位置更新消息中。
- 根据权利要求35所述的设备,其特征在于,所述网络设备还包括通信单元,用于:接收第二网络设备发送的第二信息,所述第二信息用于指示所述终端设备当前的注册模式。
- 根据权利要求38所述的设备,其特征在于,所述通信单元进一步用于:在所述终端设备接入到所述第一小区之后,向所述第二网络设备发送订阅通知,用于指示所述第二网络设备在所述终端设备在所述第二系统注册之后,通知所述第一网络设备;所述第二信息通过指示所述终端设备已注册到所述第二系统,来指示所述终端设备当前的模式为双注册模式。
- 根据权利要求39所述的设备,其特征在于,所述通信单元进一步用于:在确定所述终端设备支持双注册模式的情况下,所述第一网络设备向所述第二网络设备发送所述订阅通知。
- 根据权利要求38至40中任一项所述的设备,其特征在于,所述第二网络设备为统一数据管理UDM+归属用户服务器HSS的网元。
- 根据权利要求35所述的设备,其特征在于,所述网络设备还包括通信单元,用于:接收所述第一系统的第三网络设备发送的第三信息,所述第三信息用于指示所述终端设备当前在所述第二系统的注册情况;所述第一确定单元进一步用于:根据所述终端设备当前在所述第二系统的注册情况,确定所述终端设备当前的注册模式。
- 根据权利要求42所述的设备,其特征在于,其特征在于,所述第一网络设备为所述第一系统中的接入网设备,所述第三网络设备是所述第一系统中的核心网设备;所述第三信息为切换请求拒绝消息中的原因值,所述第三信息用于指示所述终端设备当前已在所述第二系统中注册。
- 根据权利要求43所述的设备,其特征在于,所述通信单元进一步用于:向所述第三网络设备发送切换请求,以用于所述第三网络设备通过N26接口向所述第二系统的核心网设备发送重定位请求。
- 根据权利要求35至44中任一项所述的设备,其特征在于,在所述终端设备当前的注册模式是单注册模式时,所述需要执行的流程为切换流程或重定向流程。
- 根据权利要求45所述的设备,其特征在于,所述终端设备当前与所述第一小区保持连接态,且所述第一系统和所述第二系统之间支持N26接口时,所述需要执行的流程为切换流程。
- 根据权利要求45所述的设备,其特征在于,在所述终端设备当前与所述第一小区保持连接态,所述第一终端设备不支持N26接口时,所述需要执行的流程为重定向流程。
- 根据权利要求47所述的设备,其特征在于,如果所述终端设备识别网络侧发送的用于指示网络侧支持无N26接口切换的指示信息时,则所述终端设备在执行被触发的重定向流程之后,向所述网络侧发送附着请求消息;或,如果所述终端设备不识别或未接收到网络侧发送的用于指示网络侧支持无N26接口切换的指示信 息时,则所述终端设备在执行被触发的重定向流程之后,发送位置更新TAU请求消息。
- 根据权利要求35至41中任一项所述的设备,其特征在于,在所述终端设备当前的注册模式是单注册模式,且所述终端设备支持的注册模式为双注册模式时,所述需要执行的流程为保持与所述第一小区的连接的基础上接入到所述第二小区的流程。
- 根据权利要求35至41中任一项所述的设备,其特征在于,在所述终端设备当前的注册模式为双注册模式时,所述需要执行的流程为重定向流程。
- 根据权利要求50所述的设备,其特征在于,所述终端设备在执行被触发的重定向流程之后,向所述网络侧发送附着请求消息。
- 根据权利要求50或51所述的设备,其特征在于,所述第一系统和所述第二系统支持N26接口。
- 根据权利要求35至52中任一项所述的设备,其特征在于,所述网络设备为核心网设备。
- 根据权利要求53所述的设备,其特征在于,所述网络设备还包括通信单元,用于:接收所述第一系统中的接入网设备触发的切换请求,所述切换请求用于请求对所述终端设备的当前接入的小区进行切换;所述第二确定单元进一步用于:响应于切换流程,基于所述终端设备当前的注册模式和/或支持的注册模式,确定所述终端设备接入到第二系统中的第二小区所需执行或不能执行的流程。
- 根据权利要求54所述的设备,其特征在于,所述通信单元进一步用于:在所述第二确定单元确定所述终端设备接入到所述第二小区不能执行切换流程的情况下,所述核心网设备向所述接入网设备发送切换拒绝消息。
- 根据权利要求55所述的设备,其特征在于,所述切换拒绝消息携带所述终端设备当前的注册模式、支持的注册模式或所需执行的流程。
- 根据权利要求35至52中任一项所述的设备,其特征在于,所述网络设备为接入网设备。
- 根据权利要求57所述的设备,其特征在于,所述网络设备还包括通信单元,用于:在所述需要执行的流程为切换流程时,向所述第一系统的核心网设备触发切换请求消息;在所述需要执行的流程为附着流程或重定向流程时,向所述终端设备触发保持与所述第一小区的连接的基础上接入到所述第二小区的流程或重定向流程。
- 根据权利要求35至58中任一项所述的设备,其特征在于,所述第一系统为5G系统,所述第二系统为长期演进LTE系统;或,所述第一系统为长期演进LTE系统,所述第二系统为5G系统。
- 一种网络设备,其特征在于,包括确定单元和通信单元;其中,所述确定单元用于:确定终端设备当前的注册模式、支持的注册模式和所述终端设备当前在第二系统的注册情况中的至少一种;所述通信单元用于:向第一系统中的第一网络设备发送指示信息,所述指示信息用于指示所述终端设备当前的注册模式、支持的注册模式和所述终端设备当前在第二系统的注册情况中的至少一种。
- 根据权利要求60所述的设备,其特征在于,所述确定单元进一步用于:基于所述终端设备发送的注册消息或位置更新消息,确所述终端设备当前的注册模式、支持的注册模式和所述终端设备当前在第二系统的注册情况中的至少一种。
- 根据权利要求60或61所述的设备,其特征在于,所述通信单元进一步用于:接收所述第一网络设备发送的订阅通知,所述订阅通知用于指示所述第二网络设备在所述终端设备在第二系统注册之后,通知所述第一网络设备,其中,所述终端设备已在所述第一系统中注册;所述指示信息通过指示所述终端设备已注册到所述第二系统,来指示所述终端设备当前的模式为双注册模式。
- 根据权利要求60至62中任一项所述的设备,其特征在于,所述第二网络设备为统一数据管理UDM+归属用户服务器HSS的网元。
- 根据权利要求60所述的设备,其特征在于,所述网络设备为所述第二系统中的核心网设备,所述第一网络设备为所述第一系统的核心网设备;所述指示信息用于指示所述终端设备在所述第二系统已注册或去注册。
- 根据权利要求60所述的设备,其特征在于,所述第二网络设备为所述第一系统中的核心网设备,所述第一网络设备为所述第一系统的接入网设备。
- 根据权利要求65所述的设备,其特征在于,所述通信单元进一步用于:接收所述第二系统的核心网设备发送的用于指示和所述终端设备当前在第二系统的注册情况的信 息。
- 一种终端设备,其特征在于,包括生成单元和通信单元;所述生成单元用于:生成指示信息,所述指示信息用于指示所述终端设备当前的注册模式和/或支持的注册模式;所述通信单元用于:向网络设备发送所述指示信息,所述指示信息用于指示所述终端设备当前的注册模式和/或支持的注册模式。
- 根据权利要求67所述的设备,其特征在于,所述指示信息承载于注册消息或位置更新消息中。
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