WO2018171310A1 - 一种终端在4g和5g网络间移动的方法、装置和设备 - Google Patents

一种终端在4g和5g网络间移动的方法、装置和设备 Download PDF

Info

Publication number
WO2018171310A1
WO2018171310A1 PCT/CN2018/072779 CN2018072779W WO2018171310A1 WO 2018171310 A1 WO2018171310 A1 WO 2018171310A1 CN 2018072779 W CN2018072779 W CN 2018072779W WO 2018171310 A1 WO2018171310 A1 WO 2018171310A1
Authority
WO
WIPO (PCT)
Prior art keywords
network
terminal
management device
target network
pdu session
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2018/072779
Other languages
English (en)
French (fr)
Inventor
卢飞
李振东
朱进国
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZTE Corp
Original Assignee
ZTE Corp
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.)
Filing date
Publication date
Application filed by ZTE Corp filed Critical ZTE Corp
Priority to EP24158827.6A priority Critical patent/EP4351225A3/en
Priority to EP18772060.2A priority patent/EP3606165B1/en
Publication of WO2018171310A1 publication Critical patent/WO2018171310A1/zh
Priority to US16/575,550 priority patent/US11159991B2/en
Anticipated expiration legal-status Critical
Priority to US17/507,402 priority patent/US11641601B2/en
Ceased legal-status Critical Current

Links

Images

Classifications

    • 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
    • H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/08—Upper layer protocols
    • H04W80/10—Upper layer protocols adapted for application session management, e.g. SIP [Session Initiation Protocol]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H04W36/144—Reselecting a network or an air interface over a different radio air interface technology
    • H04W36/1443—Reselecting a network or an air interface over a different radio air interface technology between licensed networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel

Definitions

  • the present invention relates to the field of mobile communications technologies, and in particular, to a method, apparatus, and device for a terminal to move between 4G and 5G networks.
  • Figure 1 is an architecture for interworking between 4G networks and 5G networks.
  • the functions of each network element in the network architecture are as follows:
  • the user equipment accesses the 4G network through the wireless air interface and obtains the service.
  • the information is exchanged between the air interface and the base station, and the information is exchanged between the non-access stratum (NAS) and the mobile management entity of the core network. .
  • NAS non-access stratum
  • the base station (Radio Access Network (RAN)) is responsible for air interface resource scheduling and air port connection management of the terminal accessing the network.
  • RAN Radio Access Network
  • a base station In a 4G network, a base station is called an eNodeB, and in a 5G network, a base station carries an NG RAN.
  • the mobility management entity is a 4G core network control plane entity, which is mainly responsible for authentication, authorization, and subscription checking of users to ensure that users are legitimate users; user mobility management, including: location registration and temporary identity allocation; maintaining IDLE And CONNECT state and state transition; switch in CONNECT state; public data network (PDN) connection and bearer maintenance, including: session management functions such as creation, modification, and deletion; and paging in user IDLE state.
  • the Authentication Management Function (AMF) entity mainly controls user mobility management, including: location registration and temporary identity assignment; maintaining IDLE and CONNECT states and state transitions.
  • Session Management Function The SMF entity function mainly includes maintenance of Protocol Data Unit (PDU) sessions, including: session management functions such as creation, modification, and deletion; and paging triggered in the IDLE state.
  • PDU Protocol Data Unit
  • the service gateway is a core network user plane function entity, and is mainly responsible for interaction with the PDN gateway (PGW) in the case of roaming; receiving downlink data packets for buffering in the IDLE state, and notifying the MME to page the user; Anchor points and user plane anchors across 2G/3G/4G mobility.
  • UPF It is the user plane access point of the terminal accessing the PDN network. It can be responsible for allocating the user IP address, binding and updating of the session path, etc., which is the user switching/moving in the 4G system or between the 4G system and the 5G system. Anchor to ensure business continuity.
  • the Home Subscriber Server (HSS) is an important part of the control layer in the IP Multimedia Subsystem (IMS).
  • the information that the HSS can process includes: user identification, number and address information; user security information, that is, network access control information for authentication and authorization; user location information, that is, HSS supports user registration, storage location information; and user list information.
  • the UE When the UE moves to the 5G network, the UE sends a registration request message to the AMF, and the AMF returns a registration accept message to the UE, where the registration accept message carries the newly allocated global unique temporary UE identifier (GUTI) and carries a valid tracking area identifier list. (TAI list), but the tracking area (TA) in the 4G network cannot be included in the TAI list; the registration accept message also needs to carry a single registration indication or a dual registration indication, and the single registration indication is used to indicate that the UE moves to use in 4G.
  • a Tracking Area Update (TAU) procedure the dual registration indication is used to instruct the UE to move to the 4G to access the 4G network using a Handover Attach procedure, which is only applicable to the current TAI list.
  • TAU Tracking Area Update
  • the UE When the UE moves from the 5G network to the 4G network, since the selected 4G TA is not in the TAI list, and the single registration indication/double registration indication is invalid in the newly selected TA, the UE cannot determine that the UE should be sent.
  • the request message is still carried out with the TAU request message.
  • the MME cannot acquire the mobility management context of the UE from the AMF, so the MME rejects the access of the UE ( The MME returns a TAU reject message to the UE); after the UE receives the TAU reject message of the MME, the UE will re-initiate the initial attach process to generate more signaling; if the UE directly performs the handover attach process, but if the MME and the UE originally access There is an Nx interface between the AMFs, and the handover attach process also brings redundant signaling.
  • embodiments of the present invention provide a method, an apparatus, and a device for a terminal to move between a 4G and a 5G network.
  • An embodiment of the present invention provides a method for a terminal to move between a 4G and a 5G network, where the method includes:
  • the management device corresponding to the target network sends an access accept message, where the access accept message carries an activation indication
  • the activation indication is used to instruct the terminal to reactivate the PDN connection or PDU session in the source network in the target network, or to indicate that the terminal PDN connection or PDU session has been activated in the target network.
  • the method before the management device corresponding to the target network sends the access accept message to the terminal, the method further includes:
  • the management device corresponding to the target network determines whether there is an Nx interface between the management device corresponding to the source network; if not, the management device corresponding to the target network determines that the mobile device cannot obtain the mobile device from the management device corresponding to the source network.
  • Sexual management context
  • the method further includes:
  • the management device corresponding to the target network determines that the mobility management context can be obtained from the management device corresponding to the source network.
  • the management device corresponding to the target network determines that there is no Nx interface between the management device corresponding to the source network
  • the activation indication carried in the access accept message is used to instruct the terminal to reactivate the PDN connection or the PDU session in the source network in the target network.
  • the management device corresponding to the target network determines that there is an Nx interface between the management device corresponding to the source network
  • the activation indication carried in the access accept message is used to indicate that the PDN connection or the PDU session of the terminal has been activated in the target network.
  • the embodiment of the invention further provides a method for a terminal to move between a 4G and a 5G network, the method comprising:
  • the activation indication is used to instruct the terminal to reactivate the PDN connection or PDU session in the source network in the target network, or to indicate that the terminal PDN connection or PDU session has been activated in the target network.
  • the method further includes: the activation indication, after the terminal receives the access accept message, when the terminal receives the access accept message, when the terminal re-activates the PDN connection or the PDU session in the source network, the method further includes:
  • the terminal sends a PDN connection setup request message or a PDU session setup request message, where the PDN connection setup request message or the PDU session setup request message carries a handover indication.
  • the embodiment of the invention further provides a device for moving a terminal between a 4G and a 5G network, the device comprising:
  • the first sending module is configured to send an access accept message, where the access accept message carries an activation indication
  • the activation indication is used to instruct the terminal to reactivate the PDN connection or PDU session in the source network in the target network, or to indicate that the terminal PDN connection or PDU session has been activated in the target network.
  • the device further includes:
  • the determining module is configured to determine whether an Nx interface exists between the management device corresponding to the target network and the management device corresponding to the source network before sending the access accept message, and if not, determining the management corresponding to the target network The device cannot obtain the mobility management context from the management device corresponding to the source network.
  • the determining module is further configured to: when it is determined that the management device corresponding to the target network and the management device corresponding to the source network have an Nx interface, determine that the management device corresponding to the target network can The management device corresponding to the source network acquires the mobility management context.
  • the activation indication is used to instruct the terminal to reactivate the PDN connection or the PDU session in the source network in the target network.
  • the activation indication is used to indicate that the PDN connection or the PDU session of the terminal has been activated in the target network.
  • the embodiment of the invention further provides a network management device, where the network management device comprises: the device described above.
  • the embodiment of the invention further provides a device for moving a terminal between a 4G and a 5G network, the device comprising:
  • a receiving module configured to receive an access accept message, where the access accept message carries an activation indication
  • the activation indication is used to instruct the terminal to reactivate the PDN connection or PDU session in the source network in the target network, or to indicate that the terminal PDN connection or PDU session has been activated in the target network.
  • the device further includes: a second sending module, where the activation indication is used to instruct the terminal to reactivate the PDN connection or the PDU session in the source network in the target network,
  • the second sending module is configured to send a PDN connection setup request message or a PDU session setup request message after the receiving module receives the access accept message, where the PDN connection setup request message or the PDU session setup request message carries a handover indication .
  • An embodiment of the present invention further provides a terminal device, where the terminal device includes: the device described above.
  • a storage medium having stored therein a computer program, wherein the computer program is configured to execute the steps of any one of the method embodiments described above.
  • an electronic device comprising a memory and a processor, wherein the memory stores a computer program, the processor being arranged to run the computer program to perform any of the above The steps in the method embodiments.
  • the method, the device and the device for moving the terminal between the 4G and the 5G network are provided by the embodiment of the present invention.
  • the method includes: the management device corresponding to the target network sends an access accept message, where the access accept message carries an activation indication;
  • the activation indication is used to instruct the terminal to reactivate the PDN connection or protocol PDU session in the source network in the target network, or to indicate that the terminal PDN connection or PDU session has been activated in the target network.
  • the terminal in the process of moving between the 4G and the 5G network the idle state mobile
  • the management device in the target network notifies the terminal whether the PDN connection or the PDU session needs to be reactivated, and the terminal receives the MME in comparison with the prior art.
  • the signaling process is reduced, network resources are saved, and the power consumption of the terminal is also reduced.
  • the embodiment of the present invention further determines whether an Nx interface exists between the management device corresponding to the target network and the management device corresponding to the source network, and instructs the terminal to perform a corresponding activation operation based on different determination results, and also reduces signaling. effect.
  • 1 is a schematic structural diagram of interworking between a 4G network and a 5G network in the related art
  • FIG. 2 is a schematic diagram of a process in which a terminal accesses a 5G network and establishes a PDU session in the related art
  • FIG. 3 is a schematic flowchart 1 of a method for moving a terminal between 4G and 5G networks according to an embodiment of the present invention
  • 4 is a flow chart 2 of a method for moving a terminal between 4G and 5G networks according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram 1 of a device for moving a terminal between a 4G and a 5G network according to an embodiment of the present invention
  • FIG. 6 is a second schematic structural diagram of an apparatus for moving a terminal between a 4G and a 5G network according to an embodiment of the present invention
  • FIG. 7 is a schematic flowchart of a method for moving a terminal from a 5G network to a 4G network according to Embodiment 1 of the scenario;
  • FIG. 8 is a schematic flowchart of a method for moving a terminal from a 4G network to a 5G network according to Embodiment 2 of the scenario;
  • FIG. 9 is a schematic flowchart of a method for a terminal to move from a 4G network to a 5G network according to Embodiment 3 of the scenario.
  • Step 200 The UE sends a registration request message to the AMF, where the registration request message carries a global unique temporary UE GUTI or an International Mobile Subscriber Identity (IMSI), an initial access indication, and the initial access indication is used to notify the network that the registration request belongs to Initial access request;
  • IMSI International Mobile Subscriber Identity
  • Step 201 If the step 200 carries the GUTI, the AMF needs to obtain the user IMSI through the GUTI, and the AMF sends a location update request message Update Location Request to the HSS/UDM, where the message carries the user IMSI and the AMF address;
  • Step 202 The HSS returns a location confirmation message Update Location ACK to the AMF, where the message carries the subscription data of the user.
  • Step 203 If the AMF accepts the registration request, the AMF returns a Registration Accept message to the UE, where the message carries the newly allocated GUTI and carries a valid TAI list; and also needs to carry a single registration indication or a dual registration indication, single registration
  • the indication is used to indicate that the UE moves to the 4G using the TAU procedure;
  • the dual registration indication is used to indicate that the UE moves to the 4G to access the 4G network using the Handover Attach procedure, and the indication is applicable only to the current TAI list.
  • the TAI list in this step cannot include the TA in the 4G system;
  • Step 204 The UE returns a registration complete message to the AMF, indicating that the GUTI has taken effect.
  • Step 205 The UE needs to establish a protocol PDU session, and the UE sends a PDU session establishment request message PDU Session Activation Request to the AMF, where the message carries the PDU session ID, the PDN type, and the DNN.
  • Step 206 The AMF selects the SMF according to the DNN and the PDN type, and sends an SM session message PDU Session Activation Request to the SMF.
  • the SM session message carries the IMSI, the PDU session establishment request message, the AMF address, and the GTP-C tunnel identifier (TEID). Location information of the UE;
  • Step 207 The SMF selects the UPF according to the location information of the UE, the PDN type or the DNN, and sends a Session Activation Request message, the message carries the SMF address, the IMSI, the packet detection, execution, and reporting rules, if the SMF allocates the UPF. TEID information. This step also needs to carry the TEID information used by the UPF.
  • Step 208 The UPF returns a session establishment response message to the SMF. If the UPF allocates the TEID information used by the UPF, the step further needs to carry the TEID information used by the UPF.
  • Step 209 The SMF returns an SM session message PDU to the AMF.
  • the message carries the PDU session ID, the QoS parameter, and the TEID of the UPF.
  • the message carries the PDU session establishment accept message.
  • Step 210 The AMF sends an N2 PDU session request message to the NG RAN.
  • the message carries the PDU session ID, the QoS parameter, the TEID of the UPF, and the PDU session establishment accept message.
  • Step 211 The NG RAN sends a radio link connection reconfiguration RRC connection re-configuration message to the UE according to the QoS parameter, and is used to establish a radio bearer.
  • the RRC connection re-configuration message further carries a PDU session establishment accept message.
  • Step 212 The UE returns a radio link connection reconfiguration acknowledgement RRC connection re-configuration ACK message to the NG RAN.
  • Step 213 The NG RAN returns an N2 PDU session establishment confirmation message N2PDU Session Request ACK to the AMF, and the message carries the TEID information of the NG RAN N3 interface.
  • Step 214 The AMF sends a session modification request message to the SMF, and the message carries the TEID information of the NG RAN N3 interface obtained in step 213.
  • Step 215 The SMF sends a session modification request message to the UPF, where the message carries the TEID information of the NG RAN N3 interface obtained in step 213; after this step, the UPF may send downlink data to the NG RAN;
  • Step 216 The UPF returns a session modification response message to the SMF, a Session Modification Response;
  • Step 217 The SMF returns a session modification response message to the AMF.
  • the TAI list in the step 203 does not include the 4G TA selected by the UE after being moved into the 4G network, and the single registration indication/double registration indication is in the new selection.
  • the TA has been invalid.
  • the embodiment of the present invention provides a method for a terminal to move between a 4G and a 5G network, where the method includes:
  • Step 301 The management device corresponding to the target network sends an access accept message, where the access accept message carries an activation indication.
  • the activation indication is used to instruct the terminal to reactivate the PDN connection or PDU session in the source network in the target network, or to indicate that the terminal PDN connection or PDU session has been activated in the target network.
  • the access accept message sent by the management device MME in the 4G network to the terminal is: TAU accept message; when the terminal moves from the 4G network to the 5G network
  • the access accept message sent by the management device AMF in the 5G network to the terminal is: registration accept message.
  • the management device in the target network notifies the terminal whether to re-activate the PDN connection or the PDU session, and the terminal receives the TAU of the MME compared to the prior art.
  • the signaling process is reduced, network resources are saved, and the power consumption of the terminal is also reduced.
  • the method before the management device corresponding to the target network sends an access accept message to the terminal, the method further includes:
  • Step 300 The management device corresponding to the target network determines whether an Nx interface exists between the management device corresponding to the source network and the management device corresponding to the source network.
  • the management device corresponding to the target network determines that the mobility management context cannot be obtained from the management device corresponding to the source network.
  • the method further includes:
  • the management device corresponding to the target network determines that the mobility management context can be obtained from the management device corresponding to the source network.
  • the management device corresponding to the target network determines that there is no Nx interface between the management device corresponding to the source network
  • the activation indication carried in the access accept message is used to instruct the terminal to reactivate the PDN connection or the PDU session in the source network in the target network.
  • the management device corresponding to the target network determines that an Nx interface exists between the management device corresponding to the source network
  • the activation indication carried in the access accept message is used to indicate that the PDN connection or the PDU session of the terminal has been activated in the target network.
  • the embodiment of the present invention further determines whether an Nx interface exists between the management device corresponding to the target network and the management device corresponding to the source network, and instructs the terminal to perform a corresponding activation operation based on different determination results, and the effect of reducing signaling is also achieved.
  • the embodiment of the invention further provides a method for a terminal to move between a 4G and a 5G network, the method comprising:
  • Step 400 The terminal receives an access accept message, where the access accept message carries an activation indication.
  • the activation indication is used to instruct the terminal to reactivate the PDN connection or PDU session in the source network in the target network, or to indicate that the terminal PDN connection or PDU session has been activated in the target network.
  • the access accept message sent by the management device MME in the 4G network to the terminal is: TAU accept message; when the terminal moves from the 4G network to the 5G network
  • the access accept message sent by the management device AMF in the 5G network to the terminal is: registration accept message.
  • the management device in the target network notifies the terminal whether to re-activate the PDN connection or the PDU session, and the terminal receives the TAU of the MME compared to the prior art.
  • the signaling process is reduced, network resources are saved, and the power consumption of the terminal is also reduced.
  • the activation indication is used to indicate that the terminal receives the access accept message after the PDN connection or the PDU session in the source network is reactivated in the target network, as shown in FIG. Also includes:
  • Step 401 The terminal sends a PDN connection setup request message or a PDU session setup request message, where the PDN connection setup request message or the PDU session setup request message carries a handover indication.
  • the embodiment of the present invention further provides a device for moving a terminal between a 4G and a 5G network, which is used to implement the foregoing embodiment, and has not been described again.
  • the term “module” may implement a combination of software and/or hardware of a predetermined function. As shown in Figure 5, the device includes:
  • the first sending module 501 is configured to send an access accept message, where the access accept message carries an activation indication;
  • the activation indication is used to instruct the terminal to reactivate the PDN connection or PDU session in the source network in the target network, or to indicate that the terminal PDN connection or PDU session has been activated in the target network.
  • the device further includes:
  • the determining module 500 is configured to determine whether an Nx interface exists between the management device corresponding to the target network and the management device corresponding to the source network, before the sending module sends the access accept message.
  • the management device corresponding to the target network cannot obtain the mobility management context from the management device corresponding to the source network.
  • the determining module 500 is further configured to: when it is determined that the management device corresponding to the target network and the management device corresponding to the source network have an Nx interface, determine that the management device corresponding to the target network can be from the source network. The corresponding management device obtains the mobility management context.
  • the activation indication is used to instruct the terminal to reactivate the PDN connection or the PDU session in the source network in the target network;
  • the activation indication is used to indicate that the PDN connection or the PDU session of the terminal has been activated in the target network.
  • the embodiment of the present invention further provides a device for moving a terminal between a 4G and a 5G network.
  • the device includes:
  • the receiving module 600 is configured to receive an access accept message, where the access accept message carries an activation indication
  • the activation indication is used to instruct the terminal to reactivate the PDN connection or PDU session in the source network in the target network, or to indicate that the terminal PDN connection or PDU session has been activated in the target network.
  • the apparatus further includes: a second sending module 601; the activation indication is used to instruct the terminal to reactivate the PDN connection or the PDU session in the source network in the target network,
  • the second sending module 601 is configured to send a PDN connection setup request message or a PDU session setup request message after the receiving module receives the access accept message, where the PDN connection setup request message or the PDU session setup request message carries the handover Instructions.
  • the embodiment of the present invention further provides a network management device, where the network management device includes the device described in FIG.
  • the embodiment of the present invention further provides a terminal device, where the terminal device includes: the device described in FIG. 6.
  • FIG. 7 is a schematic flowchart of a method for a terminal to move from a 5G network to a 4G network according to a scenario embodiment of the present invention. As shown in FIG. 7, the method includes:
  • Step 701 The UE moves to the EPC system (4G network), and the UE sends a TAU request message Tracking Area Updating Request to the MME, where the TAU request message carries the GUTI_5G, which is allocated by the AMF in the 5G system;
  • Step 702 The MME obtains the original AMF through the GUTI_5G, but the MME and the AMF have no interface, so the MME cannot obtain the context from the AMF, and the MME obtains the user IMSI by sending an identity request message Identity Request to the UE.
  • Step 703 The UE returns an identity response message Identity Response to the MME, where the message carries the user IMSI.
  • Step 704 The MME sends a location update request message to the HSS/UDM according to the IMSI, and the Update Location Request message carries the IMSI.
  • Step 705 The HSS/UDM returns a location update acknowledgement message Update Location ACK to the MME, where the message carries the user subscription data, and the user subscription data may carry the SMF/PGW-C ID and the APN pair;
  • Step 706 The MME returns a TAU accept message TAU Accept to the UE, and the message carries the newly allocated GUTI and carries the valid TAI list. If the SMF/PGW-C ID and the APN are obtained in step 705, the TAU accept message needs to be Carrying a PDN connection/PDU session activation indication, indicating that the UE needs to reactivate the existing PDN connection/PDU session in the target network;
  • Step 707 The UE returns a TAU complete message TAU complete to the MME, indicating that the GUTI has taken effect.
  • Step 708 After receiving the indication information in the TAU acceptance, the UE sends a PDN connection setup request PDN connectivity request to the MME, where the message carries the PDN type and the APN, and the handover indication is performed;
  • Step 709 The MME sends a setup session request message to the acquired PGW according to the APN and the PGW-C ID obtained in step 705.
  • the message carries the IMTP, the APN, the GTP-C address and the TEID of the MME, and carries the QoS. Handover indication, location information of the UE, bearer ID;
  • Step 710 The PGW-C selects the UPF according to the location information of the UE, the PDN type or the APN, and sends a session establishment request message Create Session Request, the message carries the PGW-C address, the IMSI, the packet detection, execution, reporting rule, and the bearer ID. If the PGW-C allocates the TEID information used by the UPF, this step also needs to carry the TEID information used by the UPF;
  • Step 711 The UPF returns a session establishment response message Create Session Response to the SMF. If the UPF allocates the TEID information used by the UPF, the step further needs to carry the TEID information used by the UPF.
  • Step 712 The PGW-C returns a session establishment message Create Session Response to the MME, where the message carries the address of the PGW-C and the TEID, and the TEID of the UPF;
  • Step 713 The MME sends an initial context setup request message S1context request to the eNodeB, where the message carries the bearer ID, the QoS parameter, the TEID of the UPF, and also carries the NAS message-activate default bearer request message, and activates the bearer in the default bearer request message. ID, QoS parameters, etc.;
  • Step 714 The eNodeB sends a radio link connection reconfiguration RRC connection re-configuration message to the UE to establish a radio bearer.
  • the RRC connection re-configuration message further carries an activation default bearer request message.
  • Step 715 The UE returns a radio link connection reconfiguration acknowledgement RRC connection re-configuration ACK message to the eNodeB.
  • Step 716 The UE returns to activate the default bearer accept message.
  • Step 717 The eNodeB returns an S1 initial context establishment confirmation message to the MME, where the message carries the user plane TEID information of the eNodeB, and the message may also activate the default bearer accept message.
  • Step 718 The MME sends a bearer modification request message Modify Bearer Request to the PGW-C, where the message carries the user plane TEID of the eNodeB obtained in step 717.
  • Step 719 The PGW-C sends a session modification request message to the UPF, and the message carries the user plane TEID of the eNodeB obtained in step 717. After this step, the UPF can send the downlink data to the eNodeB.
  • Step 720 The UPF returns a session modification response message to the PGW-C.
  • Step 721 The PGW-C returns a session modification response message to the MME.
  • the SGW unrelated to the present invention and the process of interacting with the SGW are omitted in this invention.
  • FIG. 8 is a schematic flowchart of a method for a terminal to move from a 4G network to a 5G network according to Embodiment 2 of the present invention. As shown in FIG. 8, the method includes:
  • Step 801 The UE moves to the 5G system, and the UE sends a registration request message to the AMF, and the registration request message carries the GUTI_4G, where the GUTI_4G is allocated by the MME in the 4G system;
  • Step 802 The AMF obtains the original MME through the GUTI_4G, but there is no interface between the MME and the AMF, so the AMF cannot obtain the context from the MME, and the AMF obtains the user IMSI by sending an identity request message Identity Request to the UE.
  • Step 803 The UE returns an identity response message Identity Response to the AMF, where the message carries the user IMSI;
  • Step 804 The AMF sends a location update request message Update Location Request to the HSS/UDM according to the IMSI, and the message carries the IMSI;
  • Step 805 The HSS/UDM returns a location update confirmation message Update Location ACK to the AMF, where the message carries the user subscription data, and the user subscription data may carry the SMF/PGW-C ID and the DNN pair;
  • Step 806 The AMF returns a registration accept message to the UE, and the message carries the newly allocated GUTI and carries the valid TAI list. If the SMF/PGW-C ID and the DNN are obtained in step 805, the registration accept message is required. Carrying a PDN connection/PDU session activation indication, indicating that the UE needs to reactivate the existing PDN connection/PDU session in the target network;
  • Step 807 The UE returns a registration complete message to the AMF, indicating that the GUTI has taken effect.
  • Step 808 After receiving the indication information in the registration acceptance, the UE sends a PDU session establishment request PDU Session Activation Request to the AMF, where the message carries the PDN type and the DNN, the handover indication, and the PDU session ID.
  • Step 809 The AMF sends an SM session message PDU Session Activation Request to the SMF according to the DNN and the PDN type, and the SMF ID obtained in step 805.
  • the SM session message carries the IMSI, the PDU session establishment request message, the AMF address, and the GTP-C TEID. , location information of the UE;
  • Step 810 The SMF selects the UPF according to the location information of the UE, the PDN type or the DNN, and sends a PDU session establishment request message PDU Session Activation Request, where the message carries the SMF address, the IMSI, the packet detection, execution, and reporting rules, if the SMF allocates the UPF.
  • PDU Session Activation Request where the message carries the SMF address, the IMSI, the packet detection, execution, and reporting rules, if the SMF allocates the UPF.
  • this step also needs to carry the TEID information used by the UPF;
  • Step 811 The UPF returns a session establishment response message PDU Session Activation Response to the SMF. If the UPF allocates the TEID information used by the UPF, the step further needs to carry the TEID information used by the UPF.
  • Step 812 The SMF returns an SM session message PDU to the AMF.
  • the message carries the PDU session ID, the QoS parameter, and the TEID of the UPF.
  • the message carries the PDU session establishment accept message.
  • Step 813 The AMF sends an N2 PDU session request message to the NG RAN, where the message carries the PDU session ID, the QoS parameter, the TEID of the UPF, and the PDU session establishment accept message.
  • Step 814 The NG RAN sends an RRC connection re-configuration message to the UE to establish a radio bearer according to the QoS parameter, and the RRC connection re-configuration message further carries a PDU session establishment accept message.
  • Step 815 The UE returns an RRC connection re-configuration ACK message to the NG RAN.
  • Step 816 The NG RAN returns an N2 PDU session establishment confirmation message N2Session Request ACK to the AMF, and the message carries the TEID information of the NG RAN N3 interface.
  • Step 817 The AMF sends a session modification request message to the SMF, and the message carries the TEID information of the NG RAN N3 interface obtained in step 816.
  • Step 818 The SMF sends a session modification request message to the UPF, where the message carries the TEID information of the NG RAN N3 interface obtained in step 816; after this step, the UPF may send the downlink data to the NG RAN;
  • Step 819 The UPF returns a session modification response message to the SMF, a Session Modification Response;
  • Step 820 The SMF returns a session modification response message to the AMF.
  • FIG. 9 is a schematic flowchart of a method for moving a terminal from a 4G network to a 5G network according to Embodiment 3 of the present invention.
  • the PDU session has been successfully reconstructed in the 5G network, as shown in FIG. 9, including:
  • Step 901 The UE moves to the 5G system, and the UE sends a registration request message to the AMF, and the registration request message carries the GUTI_4G, where the GUTI_4G is allocated by the MME in the 4G system;
  • Step 902 The AMF obtains the original MME through the GUTI_4G, because the Nx interface exists between the MME and the AMF, so the AMF can obtain the context from the MME, and the AMF sends a context request message Context Request to the MME, and the message carries the GUTI_4G;
  • Step 903 The MME returns a context response message Context Response to the AMF, where the message carries a mobility management context and a bearer management context.
  • Step 904 The AMF returns a context confirmation message Context ACK to the MME;
  • Step 905 The AMF sends a location update request message Update Location Request to the HSS/UDM according to the IMSI, and the message carries the IMSI and the AMF address.
  • Step 906 The HSS/UDM returns a location update confirmation message Update Location ACK to the AMF, where the message carries the user subscription data, and the user subscription data may carry the SMF/PGW-C ID and the DNN pair;
  • Step 907 The AMF sends a session management message PDU Session Modification Request to the SMF according to the SMF ID obtained in step 903, where the message carries the AMF address and the TEID;
  • Step 908 The SMF returns a session management response message PDU Session Modification Response to the AMF;
  • Step 909 The AMF returns a registration accept message to the UE, the message carries the newly allocated GUTI, and carries the valid TAI list.
  • the registration accept message also needs to carry the PDN connection/PDU session activated indication, which is used to indicate the UE PDN connection. /PDU session has been activated in the target network;
  • Step 910 The UE returns a registration complete message to the AMF, indicating that the newly allocated GUTI has taken effect.
  • Embodiments of the present invention also provide a storage medium having stored therein a computer program, wherein the computer program is configured to perform the steps of any of the above method embodiments when executed.
  • the foregoing storage medium may include, but is not limited to, a USB flash drive, a Read-Only Memory (ROM), and a Random Access Memory (RAM).
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • Embodiments of the present invention also provide an electronic device comprising a memory and a processor having stored therein a computer program arranged to execute the steps of any of the above method embodiments by running a computer program.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
  • the method, apparatus, and device for moving a terminal between a 4G and a 5G network have the following beneficial effects: the terminal re-initiates the initial attach process after receiving the TAU reject message of the MME from the prior art. In this way, the signaling process is reduced, network resources are saved, and the power consumption of the terminal is also reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Computer And Data Communications (AREA)

Abstract

本发明实施例提供了一种终端在4G和5G网络间移动的方法、装置和设备，所述方法包括：目标网络对应的管理设备发送接入接受消息，所述接入接受消息中携带激活指示；所述激活指示，用于指示终端将源网络中的公用数据网(PDN)连接或协议数据单元(PDU)会话在目标网络中重新激活、或用于指示终端所述PDN连接或PDU会话已在目标网络中激活。

Description

一种终端在4G和5G网络间移动的方法、装置和设备 技术领域
本发明涉及移动通信技术领域，尤其涉及一种终端在4G和5G网络间移动的方法、装置和设备。
背景技术
移动通信技术目前已经发展到4G阶段。4G的网络架构和前几代相比，主要特点是基于全IP传输。目前3GPP正在研究5G网络架构，图1是一种4G网络与5G网络互通的架构。网络架构中各网元的功能如下：
用户设备(User Equipment，UE)主要通过无线空口接入4G网络并获得服务，通过空口和基站交互信息，通过非接入层信令(Non Access Stratum，NAS)和核心网的移动管理实体交互信息。
基站(无线接入网络(Radio Access Network，RAN))负责终端接入网络的空口资源调度和空口的连接管理。在4G网络中基站称为eNodeB,在5G网络中基站承载NG RAN。
移动管理实体(MME)为4G核心网控制面实体，主要负责对用户的鉴权、授权以及签约检查，以保证用户是合法用户；用户移动性管理，包括：位置注册和临时标识分配；维护IDLE和CONNECT状态以及状态迁移；在CONNECT状态下的切换；公用数据网(PDN)连接以及承载的维护，包括：创建、修改和删除等会话管理的功能；用户IDLE状态下触发寻呼等功能。在5G核心网中，认证管理功能(AMF)实体主要控制用户移动性管理，包括：位置注册和临时标识分配；维护IDLE和CONNECT状态以及状态迁移。会话管理功能SMF实体功能主要包括协议数据单元(PDU)会话的维护，包括：创建、修改和删除等会话管理的功能；用户IDLE状态下触发寻呼等功能。
服务网关(SGW)为核心网用户面功能实体，主要负责漫游情况下和 PDN网关(PGW)的交互；用户IDLE状态下接收下行数据包进行缓存，并通知MME寻呼用户；跨基站的用户面锚点以及跨2G/3G/4G移动性的用户面锚点等功能。
UPF：是终端接入PDN网络的用户面接入点，可以负责分配用户IP地址，会话路径的绑定及更新等功能，是用户在4G系统内、或在4G系统和5G系统之间切换/移动的锚点，从而保证业务连续性。
归属签约用户服务器(Home Subscriber Server，HSS)是IP多媒体子系统(IP Multimedia Subsystem，IMS)中控制层的重要组成部分。HSS可处理的信息包括：用户识别、编号和地址信息；用户安全信息，即针对鉴权和授权的网络接入控制信息；用户定位信息，即HSS支持用户登记、存储位置信息；用户清单信息。
当UE移动至5G网络中时，UE向AMF发送注册请求消息，AMF向UE返回注册接受消息，注册接受消息中携带新分配的全球唯一临时UE标识(GUTI)，并携带有效的跟踪区标识列表(TAI list)，但是TAI list中不能包括4G网络中的跟踪区(TA)；所述注册接受消息中还需要携带单注册指示或双注册指示，单注册指示用于指示UE移动至4G中使用跟踪区域更新(TAU)流程；双注册指示用于指示UE移动至4G中使用切换附着(Handover Attach)流程接入4G网络中，此指示只对当前的TAI list适用。
当UE从5G网络移动至4G网络中时，由于所选择接入的4G TA不在上述TAI list中，而上述单注册指示/双注册指示在新选的TA中已经无效，所以UE无法确定应该发送跟TAU请求消息还是进行handover attach过程。而且，如果UE发送TAU请求消息，但是若MME与UE原接入的AMF之间不存在Nx接口，那么MME就无法从AMF获取UE的移动性管理上下文，这样MME就会拒绝UE的接入(MME向UE返回TAU拒绝消息)；当UE收到MME的TAU拒绝消息后，UE将重新进行初始附着过程，产生较多信令；如果UE直接进行handover attach过程，但是若 MME与UE原接入的AMF之间存在Nx接口，那么handover attach过程也会带来冗余的信令。
发明内容
为解决现有存在的技术问题，本发明实施例提供一种终端在4G和5G网络间移动的方法、装置和设备。
为达到上述目的，本发明实施例的技术方案是这样实现的：
本发明实施例提供了一种终端在4G和5G网络间移动的方法，该方法包括：
目标网络对应的管理设备发送接入接受消息，所述接入接受消息中携带激活指示；
所述激活指示，用于指示终端将源网络中的PDN连接或PDU会话在目标网络中重新激活、或用于指示终端所述PDN连接或PDU会话已在目标网络中激活。
可选的，所述目标网络对应的管理设备向终端发送接入接受消息之前，该方法还包括：
所述目标网络对应的管理设备判断自身与源网络对应的管理设备之间是否存在Nx接口；如果不存在，则所述目标网络对应的管理设备确定不能从所述源网络对应的管理设备获取移动性管理上下文。
可选的，如果所述目标网络对应的管理设备判断自身与源网络对应的管理设备之间存在Nx接口，该方法还包括：
所述目标网络对应的管理设备确定能从所述源网络对应的管理设备获取移动性管理上下文。
其中，如果所述目标网络对应的管理设备判断自身与源网络对应的管理设备之间不存在Nx接口，
所述接入接受消息中携带的激活指示，则用于指示终端将源网络中的PDN连接或PDU会话在目标网络中重新激活。
其中，如果所述目标网络对应的管理设备判断自身与源网络对应的管理设备之间存在Nx接口，
所述接入接受消息中携带的激活指示，则用于指示终端所述PDN连接或PDU会话已在目标网络中激活。
本发明实施例还提供了一种终端在4G和5G网络间移动的方法，该方法包括：
终端接收接入接受消息，所述接入接受消息中携带激活指示；
所述激活指示，用于指示终端将源网络中的PDN连接或PDU会话在目标网络中重新激活、或用于指示终端所述PDN连接或PDU会话已在目标网络中激活。
其中，所述激活指示，用于指示终端将源网络中的PDN连接或PDU会话在目标网络中重新激活时，所述终端接收接入接受消息之后，该方法还包括：
所述终端发送PDN连接建立请求消息或PDU会话建立请求消息，所述PDN连接建立请求消息或PDU会话建立请求消息中携带切换指示。
本发明实施例还提供了一种终端在4G和5G网络间移动的装置，该装置包括：
第一发送模块，设置为发送接入接受消息，所述接入接受消息中携带激活指示；
所述激活指示，用于指示终端将源网络中的PDN连接或PDU会话在目标网络中重新激活、或用于指示终端所述PDN连接或PDU会话已在目标网络中激活。
可选的，该装置还包括：
判断模块，设置为所述发送模块发送接入接受消息之前，判断目标网络对应的管理设备与源网络对应的管理设备之间是否存在Nx接口；如果不存在，则确定所述目标网络对应的管理设备不能从所述源网络对应的管 理设备获取移动性管理上下文。
在一个可选的实施例中，所述判断模块，还设置为判断目标网络对应的管理设备与源网络对应的管理设备之间存在Nx接口时，确定所述目标网络对应的管理设备能从所述源网络对应的管理设备获取移动性管理上下文。
其中，如果所述目标网络对应的管理设备与源网络对应的管理设备之间不存在Nx接口，则所述激活指示用于指示终端将源网络中的PDN连接或PDU会话在目标网络中重新激活；
如果所述目标网络对应的管理设备与源网络对应的管理设备之间存在Nx接口，则所述激活指示用于指示终端所述PDN连接或PDU会话已在目标网络中激活。
本发明实施例还提供了一种网络管理设备，所述网络管理设备包括：上文所述的装置。
本发明实施例还提供了一种终端在4G和5G网络间移动的装置，该装置包括：
接收模块，设置为接收接入接受消息，所述接入接受消息中携带激活指示；
所述激活指示，用于指示终端将源网络中的PDN连接或PDU会话在目标网络中重新激活、或用于指示终端所述PDN连接或PDU会话已在目标网络中激活。
可选的，该装置还包括：第二发送模块；所述激活指示用于指示终端将源网络中的PDN连接或PDU会话在目标网络中重新激活时，
所述第二发送模块，设置为所述接收模块接收接入接受消息之后，发送PDN连接建立请求消息或PDU会话建立请求消息，所述PDN连接建立请求消息或PDU会话建立请求消息中携带切换指示。
本发明实施例还提供了一种终端设备，所述终端设备包括：上文所述 的装置。
根据本发明的又一个实施例，还提供了一种存储介质，所述存储介质中存储有计算机程序，其中，所述计算机程序被设置为运行时执行上述任一项方法实施例中的步骤。
根据本发明的又一个实施例，还提供了一种电子装置，包括存储器和处理器，所述存储器中存储有计算机程序，所述处理器被设置为运行所述计算机程序以执行上述任一项方法实施例中的步骤。
本发明实施例提供的终端在4G和5G网络间移动的方法、装置和设备，所述方法包括：目标网络对应的管理设备发送接入接受消息，所述接入接受消息中携带激活指示；所述激活指示，用于指示终端将源网络中的PDN连接或协议PDU会话在目标网络中重新激活、或用于指示终端所述PDN连接或PDU会话已在目标网络中激活。本发明实施例中，终端在4G和5G网络间移动(空闲态移动)过程中，目标网络中的管理设备会通知终端是否需要重新激活PDN连接或PDU会话，相对现有技术中终端收到MME的TAU拒绝消息后重新进行初始附着过程来说，减少了信令流程，节省了网络资源，同时也减小了终端的能耗。
此外，本发明实施例还对目标网络对应的管理设备和源网络对应的管理设备之间是否存在Nx接口进行判断，基于不同的判断结果指示终端执行相应的激活操作，同样达到了减少信令的效果。
附图说明
图1为相关技术中一种4G网络与5G网络互通的架构示意图；
图2为相关技术中终端接入5G网络及建立PDU会话过程示意图；
图3为本发明实施例所述终端在4G和5G网络间移动的方法流程示意图一；
图4为本发明实施例所述终端在4G和5G网络间移动的方法流程示 意图二；
图5为本发明实施例所述终端在4G和5G网络间移动的装置结构示意图一；
图6为本发明实施例所述终端在4G和5G网络间移动的装置结构示意图二；
图7为场景实施例一所述终端从5G网络移动到4G网络的方法流程示意图；
图8为场景实施例二所述终端从4G网络移动到5G网络的方法流程示意图；
图9为场景实施例三所述终端从4G网络移动到5G网络的方法流程示意图。
具体实施方式
下面结合具体实施例对本发明进行详细描述。
为了便于理解，首先对相关技术中UE接入5G网络及建立PDU会话的过程进行介绍，如图2所示，包括如下步骤：
步骤200：UE向AMF发送注册请求消息Registration Request，注册请求消息中携带全球唯一临时UE GUTI或者国际移动用户识别码(IMSI)，初始接入指示，初始接入指示用于通知网络此注册请求属于初始接入请求；
步骤201：如果步骤200中携带GUTI，AMF需要通过GUTI获取用户IMSI，AMF向HSS/UDM发送位置更新请求消息Update Location Request，消息中携带用户IMSI，AMF地址；
步骤202：HSS向AMF返回位置确认消息Update Location ACK，消息中携带用户的签约数据；
步骤203：如果AMF接受了注册请求，AMF向UE返回注册接受(Registration Accept)消息，消息中携带新分配的GUTI，并携带有效的TAI list；还需要携带单注册指示或双注册指示，单注册指示用于指示UE 移动至4G中使用TAU流程；双注册指示用于指示UE移动至4G中使用Handover Attach流程接入4G网络中，此指示只对当前的TAI list适用。为了确保UE移动至4G时发起TAU过程或者Handover attach过程，此步骤中的TAI list不能包括4G系统中的跟TA；
步骤204：UE向AMF返回注册完成消息Registration complete，用于表明GUTI已经生效；
步骤205：UE需要建立协议PDU会话，UE向AMF发送PDU会话建立请求消息PDU Session Activation Request，消息中携带PDU会话ID，PDN类型及DNN；
步骤206：AMF根据DNN及PDN类型来选择SMF；并向SMF发送SM会话消息PDU Session Activation Request，SM会话消息中携带IMSI，PDU会话建立请求消息，AMF地址及GTP-C隧道标识(TEID)，UE的位置信息；
步骤207：SMF根据UE的位置信息，PDN类型或DNN来选择UPF，并发送会话建立请求消息Session Activation Request，消息中携带SMF地址，IMSI，包检测、执行、上报规则，如果SMF分配UPF使用的TEID信息，此步骤还需要携带UPF使用的TEID信息；
步骤208：UPF向SMF返回会话建立响应消息Session Activation Response,如果UPF分配UPF使用的TEID信息，此步骤还需要携带UPF使用的TEID信息；
步骤209：SMF向AMF返回SM会话消息PDU Session Activation Accept，消息中携带PDU会话ID，QoS参数，UPF的TEID，消息中携带PDU会话建立接受消息；
步骤210：AMF向NG RAN发送N2PDU会话请求消息N2PDU session request，消息中携带PDU会话ID，QoS参数，UPF的TEID，还携带了PDU会话建立接受消息；
步骤211：NG RAN根据QoS参数向UE发送无线链路连接重配置RRC connection re-configuration消息用于建立无线承载；RRC connection  re-configuration消息中还携带PDU会话建立接受消息；
步骤212：UE向NG RAN返回无线链路连接重配置确认RRC connection re-configuration ACK消息；
步骤213：NG RAN向AMF返回N2PDU会话建立确认消息N2PDU Session Request ACK，消息中携带NG RAN N3接口的TEID信息；
步骤214：AMF向SMF发送会话修改请求消息Session Modification Request，消息中携带步骤213中获取的NG RAN N3接口的TEID信息；
步骤215：SMF向UPF发送会话修改请求消息，消息中携带步骤213中获取的NG RAN N3接口的TEID信息；此步骤后UPF可以向NG RAN发送下行数据；
步骤216：UPF向SMF返回会话修改响应消息Session Modification Response；
步骤217：SMF向AMF返回会话修改响应消息。
可见，当UE从5G网络移动至4G网络中时，所述步骤203中的TAI list中不包括UE移入4G网络后选择接入的4G TA，而且所述单注册指示/双注册指示在新选的TA中已经无效。
基于上述相关技术存在的问题，本发明实施例提供了一种终端在4G和5G网络间移动的方法，该方法包括：
步骤301：目标网络对应的管理设备发送接入接受消息，所述接入接受消息中携带激活指示；
所述激活指示，用于指示终端将源网络中的PDN连接或PDU会话在目标网络中重新激活、或用于指示终端所述PDN连接或PDU会话已在目标网络中激活。
本发明实施例中，当终端从5G网络移动至4G网络时，所述4G网络中的管理设备MME向终端发送的接入接受消息为：TAU接受消息；当终端从4G网络移动至5G网络时，所述5G网络中的管理设备AMF向终端发送的接入接受消息为：registration accept消息。
本发明实施例终端在4G和5G网络间移动(空闲态移动)过程中，目标网络中的管理设备会通知终端是否需要重新激活PDN连接或PDU会话，相对现有技术中终端收到MME的TAU拒绝消息后重新进行初始附着过程来说，减少了信令流程，节省了网络资源，同时也减小了终端的能耗。
本发明实施例中，如图3所示，所述目标网络对应的管理设备向终端发送接入接受消息之前，该方法还包括：
步骤300：所述目标网络对应的管理设备判断自身与源网络对应的管理设备之间是否存在Nx接口；
如果不存在，则所述目标网络对应的管理设备确定不能从所述源网络对应的管理设备获取移动性管理上下文。
可选的，如果所述目标网络对应的管理设备判断自身与源网络对应的管理设备之间存在Nx接口，该方法还包括：
所述目标网络对应的管理设备确定能从所述源网络对应的管理设备获取移动性管理上下文。
一个实施例中，如果所述目标网络对应的管理设备判断自身与源网络对应的管理设备之间不存在Nx接口，
所述接入接受消息中携带的激活指示，则用于指示终端将源网络中的PDN连接或PDU会话在目标网络中重新激活。
一个实施例中，如果所述目标网络对应的管理设备判断自身与源网络对应的管理设备之间存在Nx接口，
所述接入接受消息中携带的激活指示，则用于指示终端所述PDN连接或PDU会话已在目标网络中激活。
本发明实施例还对目标网络对应的管理设备和源网络对应的管理设备之间是否存在Nx接口进行判断，基于不同的判断结果指示终端执行相应的激活操作，同样达到了减少信令的效果。
本发明实施例还提供了一种终端在4G和5G网络间移动的方法，该方法包括：
步骤400：终端接收接入接受消息，所述接入接受消息中携带激活指示；
所述激活指示，用于指示终端将源网络中的PDN连接或PDU会话在目标网络中重新激活、或用于指示终端所述PDN连接或PDU会话已在目标网络中激活。
本发明实施例中，当终端从5G网络移动至4G网络时，所述4G网络中的管理设备MME向终端发送的接入接受消息为：TAU接受消息；当终端从4G网络移动至5G网络时，所述5G网络中的管理设备AMF向终端发送的接入接受消息为：registration accept消息。
本发明实施例终端在4G和5G网络间移动(空闲态移动)过程中，目标网络中的管理设备会通知终端是否需要重新激活PDN连接或PDU会话，相对现有技术中终端收到MME的TAU拒绝消息后重新进行初始附着过程来说，减少了信令流程，节省了网络资源，同时也减小了终端的能耗。
一个实施例中，所述激活指示，用于指示终端将源网络中的PDN连接或PDU会话在目标网络中重新激活时，所述终端接收接入接受消息之后，如图4所示，该方法还包括：
步骤401：所述终端发送PDN连接建立请求消息或PDU会话建立请求消息，所述PDN连接建立请求消息或PDU会话建立请求消息中携带切换指示(handover indication)。
本发明实施例还提供了一种终端在4G和5G网络间移动的装置，用于实现上述实施例，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。如图5所示，该装置包括：
第一发送模块501，设置为发送接入接受消息，所述接入接受消息中 携带激活指示；
所述激活指示，用于指示终端将源网络中的PDN连接或PDU会话在目标网络中重新激活、或用于指示终端所述PDN连接或PDU会话已在目标网络中激活。
本发明实施例中，如图5所示，该装置还包括：
判断模块500，设置为所述发送模块发送接入接受消息之前，判断目标网络对应的管理设备与源网络对应的管理设备之间是否存在Nx接口；
如果不存在，则确定所述目标网络对应的管理设备不能从所述源网络对应的管理设备获取移动性管理上下文。
一个实施例中，所述判断模块500，还设置为判断目标网络对应的管理设备与源网络对应的管理设备之间存在Nx接口时，确定所述目标网络对应的管理设备能从所述源网络对应的管理设备获取移动性管理上下文。
一个实施例中，
如果所述目标网络对应的管理设备与源网络对应的管理设备之间不存在Nx接口，则所述激活指示用于指示终端将源网络中的PDN连接或PDU会话在目标网络中重新激活；
如果所述目标网络对应的管理设备与源网络对应的管理设备之间存在Nx接口，则所述激活指示用于指示终端所述PDN连接或PDU会话已在目标网络中激活。
本发明实施例还提供了一种终端在4G和5G网络间移动的装置，如图6所示，该装置包括：
接收模块600，设置为接收接入接受消息，所述接入接受消息中携带激活指示；
所述激活指示，用于指示终端将源网络中的PDN连接或PDU会话在目标网络中重新激活、或用于指示终端所述PDN连接或PDU会话已在目标网络中激活。
本发明实施例中，如图6所示，该装置还包括：第二发送模块601；所述激活指示用于指示终端将源网络中的PDN连接或PDU会话在目标网络中重新激活时，
所述第二发送模块601，设置为所述接收模块接收接入接受消息之后，发送PDN连接建立请求消息或PDU会话建立请求消息，所述PDN连接建立请求消息或PDU会话建立请求消息中携带切换指示。
本发明实施例还提供了一种网络管理设备，所述网络管理设备包括：图5所述的装置。
本发明实施例还提供了一种终端设备，所述终端设备包括：图6所述的装置。
下面结合几个场景实施例对本发明进行详细描述。
图7是本发明场景实施例一终端从5G网络移动到4G网络的方法流程示意图，如图7所示，包括：
步骤701：UE移动至EPC系统(4G网络)，UE向MME发送TAU请求消息Tracking Area Updating Request，TAU请求消息中携带GUTI_5G，此GUTI_5G是在5G系统中由AMF分配的；
步骤702：MME通过GUTI_5G获取原AMF，但是此MME与AMF之间无接口，所以MME无法向AMF获取上下文，MME通过向UE发送身份请求消息Identity Request，获取用户IMSI；
步骤703：UE向MME返回身份响应消息Identity Response，消息中携带用户IMSI；
步骤704：MME根据IMSI，向HSS/UDM发送位置更新请求消息Update Location Request消息中携带IMSI；
步骤705：HSS/UDM向MME返回位置更新确认消息Update Location ACK，消息中携带用户签约数据，用户签约数据可以携带SMF/PGW-C ID及APN对；
步骤706：MME向UE返回TAU接受消息TAU Accept，消息中携带新分配的GUTI，并携带有效的TAI list；如果在步骤705中获取了SMF/PGW-C ID及APN，TAU接受消息中还需要携带PDN connection/PDU session激活指示，用于指示UE需要将现有的PDN connection/PDU session在目标网络中重新激活；
步骤707：UE向MME返回TAU完成消息TAU complete，用于表明GUTI已经生效；
步骤708：UE收到TAU接受中的指示信息后，UE向MME发送PDN连接建立请求PDN connectivity request，消息中携带PDN类型及APN，切换指示；
步骤709：MME根据APN，及步骤705中获取的PGW-C ID，向获取的PGW发送建立会话请求消息Create Session Request，消息中携带IMSI，APN,MME的GTP-C地址和TEID，承载QoS，切换指示，UE的位置信息，承载ID；
步骤710：PGW-C根据UE的位置信息，PDN类型或APN来选择UPF，并发送会话建立请求消息Create Session Request，消息中携带PGW-C地址，IMSI，包检测、执行、上报规则，承载ID，如果PGW-C分配UPF使用的TEID信息，此步骤还需要携带UPF使用的TEID信息；
步骤711：UPF向SMF返回会话建立响应消息Create Session Response，如果UPF分配UPF使用的TEID信息，此步骤还需要携带UPF使用的TEID信息；
步骤712：PGW-C向MME返回建立会话响应消息Create Session Response，消息中携带PGW-C的地址和TEID，UPF的TEID；
步骤713：MME向eNodeB发送初始上下文建立请求消息S1context request，消息中携带承载ID，QoS参数，UPF的TEID，还携带了NAS消息-激活缺省承载请求消息，激活缺省承载请求消息中携带承载ID，QoS参数等；
步骤714：eNodeB向UE发送无线链路连接重配置RRC connection re-configuration消息用于建立无线承载；RRC connection re-configuration消息中还携带激活缺省承载请求消息；
步骤715：UE向eNodeB返回无线链路连接重配置确认RRC connection re-configuration ACK消息；
步骤716：UE返回激活缺省承载接受消息Activate default bearer accept；
步骤717：eNodeB向MME返回S1初始上下文建立确认消息，消息中携带eNodeB的用户面TEID信息，此消息中还可以捎带激活缺省承载接受消息；
步骤718：MME向PGW-C发送承载修改请求消息Modify Bearer Request，消息中携带步骤717中获取的eNodeB的用户面TEID；
步骤719：PGW-C向UPF发送会话修改请求消息Modify Session Request，消息中携带步骤717中获取的eNodeB的用户面TEID；此步骤后UPF可以向eNodeB发送下行数据；
步骤720：UPF向PGW-C返回会话修改响应消息Modify Session Response；
步骤721：PGW-C向MME返回会话修改响应消息。
此发明中省略了与本发明无关的SGW，及与SGW交互的过程。
图8是本发明场景实施例二终端从4G网络移动到5G网络的方法流程示意图，如图8所示，包括：
步骤801：UE移动至5G系统，UE向AMF发送注册请求消息Registration Request，注册请求消息中携带GUTI_4G，此GUTI_4G是在4G系统中由MME分配的；
步骤802：AMF通过GUTI_4G获取原MME，但是此MME与AMF之间无接口，所以AMF无法向MME获取上下文，AMF通过向UE发送身份请求消息Identity Request，获取用户IMSI；
步骤803：UE向AMF返回身份响应消息Identity Response，消息中携带用户IMSI；
步骤804：AMF根据IMSI，向HSS/UDM发送位置更新请求消息Update Location Request，消息中携带IMSI；
步骤805：HSS/UDM向AMF返回位置更新确认消息Update Location ACK，消息中携带用户签约数据，用户签约数据可以携带SMF/PGW-C ID及DNN对；
步骤806：AMF向UE返回注册接受消息Registration Accept，消息中携带新分配的GUTI，并携带有效的TAI list；如果在步骤805中获取了SMF/PGW-C ID及DNN，注册接受消息中还需要携带PDN connection/PDU session激活指示，用于指示UE需要将现有的PDN connection/PDU session在目标网络中重新激活；
步骤807：UE向AMF返回注册完成消息Registration complete，用于表明GUTI已经生效；
步骤808：UE收到注册接受中的指示信息后，UE向AMF发送PDU会话建立请求PDU Session Activation Request，消息中携带PDN类型及DNN，切换指示,PDU会话ID；
步骤809：AMF根据DNN及PDN类型，及在步骤805中获取的SMF ID向SMF发送SM会话消息PDU Session Activation Request，SM会话消息中携带IMSI，PDU会话建立请求消息，AMF地址及GTP-C TEID，UE的位置信息；
步骤810：SMF根据UE的位置信息，PDN类型或DNN来选择UPF，并发送PDU会话建立请求消息PDU Session Activation Request，消息中携带SMF地址，IMSI，包检测、执行、上报规则，如果SMF分配UPF使用的TEID信息，此步骤还需要携带UPF使用的TEID信息；
步骤811：UPF向SMF返回会话建立响应消息PDU Session Activation Response，如果UPF分配UPF使用的TEID信息，此步骤还需要携带UPF 使用的TEID信息；
步骤812：SMF向AMF返回SM会话消息PDU Session Activation Accept，消息中携带PDU会话ID，QoS参数，UPF的TEID，消息中携带PDU会话建立接受消息；
步骤813：AMF向NG RAN发送N2PDU会话请求消息，消息中携带PDU会话ID，QoS参数，UPF的TEID，还携带了PDU会话建立接受消息；
步骤814：NG RAN根据QoS参数向UE发送RRC connection re-configuration消息用于建立无线承载；RRC connection re-configuration消息中还携带PDU会话建立接受消息；
步骤815：UE向NG RAN返回RRC connection re-configuration ACK消息；
步骤816：NG RAN向AMF返回N2PDU会话建立确认消息N2Session Request ACK，消息中携带NG RAN N3接口的TEID信息；
步骤817：AMF向SMF发送会话修改请求消息Session Modification Request，消息中携带步骤816中获取的NG RAN N3接口的TEID信息；
步骤818：SMF向UPF发送会话修改请求消息，消息中携带步骤816中获取的NG RAN N3接口的TEID信息；此步骤后UPF可以向NG RAN发送下行数据；
步骤819：UPF向SMF返回会话修改响应消息Session Modification Response；
步骤820：SMF向AMF返回会话修改响应消息。
图9是本发明场景实施例三终端从4G网络移动到5G网络的方法流程示意图，在5G网络中PDU会话已经成功重建，如图9所示，包括：
步骤901：UE移动至5G系统，UE向AMF发送注册请求消息Registration Request，注册请求消息中携带GUTI_4G，此GUTI_4G是在 4G系统中由MME分配的；
步骤902：AMF通过GUTI_4G获取原MME，因为MME与AMF之间存在Nx接口，所以AMF可以向MME获取上下文，AMF向MME发送上下文请求消息Context Request，消息中携带GUTI_4G；
步骤903：MME向AMF返回上下文响应消息Context Response，消息中携带移动性管理上下文和承载管理上下文；
步骤904：AMF向MME返回上下文确认消息Context ACK；
步骤905：AMF根据IMSI，向HSS/UDM发送位置更新请求消息Update Location Request，消息中携带IMSI，AMF地址；
步骤906：HSS/UDM向AMF返回位置更新确认消息Update Location ACK，消息中携带用户签约数据，用户签约数据可以携带SMF/PGW-C ID及DNN对；
步骤907：AMF根据步骤903中获取的SMF ID，向SMF发送会话管理消息PDU Session Modification Request，消息中携带AMF地址和TEID；
步骤908：SMF向AMF返回会话管理响应消息PDU Session Modification Response；
步骤909：AMF向UE返回注册接受消息Registration Accept，消息中携带新分配的GUTI，并携带有效的TAI list；注册接受消息中还需要携带PDN connection/PDU session已激活指示，用于指示UE PDN connection/PDU session已经在目标网络中激活；
步骤910：UE向AMF返回注册完成消息Registration complete，用于表明新分配的GUTI已经生效。
本发明的实施例还提供了一种存储介质，该存储介质中存储有计算机程序，其中，该计算机程序被设置为运行时执行上述任一项方法实施例中的步骤。
可选地，在本实施例中，上述存储介质可以包括但不限于：U盘、只 读存储器(Read-Only Memory，简称为ROM)、随机存取存储器(Random Access Memory，简称为RAM)、移动硬盘、磁碟或者光盘等各种可以存储计算机程序的介质。
本发明的实施例还提供了一种电子装置，包括存储器和处理器，该存储器中存储有计算机程序，该处理器被设置为通过运行计算机程序以执行上述任一项方法实施例中的步骤。
本领域内的技术人员应明白，本发明的实施例可提供为方法、系统、或计算机程序产品。因此，本发明可采用硬件实施例、软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的 功能的步骤。
以上所述，仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。
工业实用性
如上所述，本发明实施例提供的一种终端在4G和5G网络间移动的方法、装置和设备具有以下有益效果：相对现有技术中终端收到MME的TAU拒绝消息后重新进行初始附着过程来说，减少了信令流程，节省了网络资源，同时也减小了终端的能耗。

Claims (17)

  1. 一种终端在4G和5G网络间移动的方法，该方法包括：
    目标网络对应的管理设备发送接入接受消息，所述接入接受消息中携带激活指示；
    所述激活指示，用于指示终端将源网络中的公用数据网PDN连接或协议数据单元PDU会话在目标网络中重新激活、或用于指示终端所述PDN连接或PDU会话已在目标网络中激活。
  2. 根据权利要求1所述的方法，其中，所述目标网络对应的管理设备向终端发送接入接受消息之前，该方法还包括：
    所述目标网络对应的管理设备判断自身与源网络对应的管理设备之间是否存在Nx接口；如果不存在，则所述目标网络对应的管理设备确定不能从所述源网络对应的管理设备获取移动性管理上下文。
  3. 根据权利要求2所述的方法，其中，如果所述目标网络对应的管理设备判断自身与源网络对应的管理设备之间存在Nx接口，该方法还包括：
    所述目标网络对应的管理设备确定能从所述源网络对应的管理设备获取移动性管理上下文。
  4. 根据权利要求2所述的方法，其中，如果所述目标网络对应的管理设备判断自身与源网络对应的管理设备之间不存在Nx接口，
    所述接入接受消息中携带的激活指示，则用于指示终端将源网络中的PDN连接或PDU会话在目标网络中重新激活。
  5. 根据权利要求3所述的方法，其中，如果所述目标网络对应的管理设备判断自身与源网络对应的管理设备之间存在Nx接口，
    所述接入接受消息中携带的激活指示，则用于指示终端所述PDN连接或PDU会话已在目标网络中激活。
  6. 一种终端在4G和5G网络间移动的方法，该方法包括：
    终端接收接入接受消息，所述接入接受消息中携带激活指示；
    所述激活指示，用于指示终端将源网络中的公用数据网PDN连接或协议数据单元PDU会话在目标网络中重新激活、或用于指示终端所述PDN连接或PDU会话已在目标网络中激活。
  7. 根据权利要求6所述的方法，其中，所述激活指示，用于指示终端将源网络中的PDN连接或PDU会话在目标网络中重新激活时，所述终端接收接入接受消息之后，该方法还包括：
    所述终端发送PDN连接建立请求消息或PDU会话建立请求消息，所述PDN连接建立请求消息或PDU会话建立请求消息中携带切换指示。
  8. 一种终端在4G和5G网络间移动的装置，该装置包括：
    第一发送模块，设置为发送接入接受消息，所述接入接受消息中携带激活指示；
    所述激活指示，用于指示终端将源网络中的公用数据网PDN连接或协议数据单元PDU会话在目标网络中重新激活、或用于指示终端所述PDN连接或PDU会话已在目标网络中激活。
  9. 根据权利要求8所述的装置，其中，该装置还包括：
    判断模块，设置为所述发送模块发送接入接受消息之前，判断目标网络对应的管理设备与源网络对应的管理设备之间是否存在Nx接口；如果不存在，则确定所述目标网络对应的管理设备不能从所述源 网络对应的管理设备获取移动性管理上下文。
  10. 根据权利要求9所述的装置，其中，
    所述判断模块，还设置为判断目标网络对应的管理设备与源网络对应的管理设备之间存在Nx接口时，确定所述目标网络对应的管理设备能从所述源网络对应的管理设备获取移动性管理上下文。
  11. 根据权利要求10所述的装置，其中，
    如果所述目标网络对应的管理设备与源网络对应的管理设备之间不存在Nx接口，则所述激活指示用于指示终端将源网络中的PDN连接或PDU会话在目标网络中重新激活；
    如果所述目标网络对应的管理设备与源网络对应的管理设备之间存在Nx接口，则所述激活指示用于指示终端所述PDN连接或PDU会话已在目标网络中激活。
  12. 一种终端在4G和5G网络间移动的装置，该装置包括：
    接收模块，设置为接收接入接受消息，所述接入接受消息中携带激活指示；
    所述激活指示，用于指示终端将源网络中的公用数据网PDN连接或协议数据单元PDU会话在目标网络中重新激活、或用于指示终端所述PDN连接或PDU会话已在目标网络中激活。
  13. 根据权利要求12所述的装置，其中，该装置还包括：第二发送模块；所述激活指示用于指示终端将源网络中的PDN连接或PDU会话在目标网络中重新激活时，
    所述第二发送模块，设置为所述接收模块接收接入接受消息之后，发送PDN连接建立请求消息或PDU会话建立请求消息，所述PDN 连接建立请求消息或PDU会话建立请求消息中携带切换指示。
  14. 一种网络管理设备，所述网络管理设备包括：权利要求8-11中任一项所述的装置。
  15. 一种终端设备，所述终端设备包括：权利要求12或13所述的装置。
  16. 一种存储介质，所述存储介质中存储有计算机程序，其中，所述计算机程序被设置为运行时执行所述权利要求1至7任一项中所述的方法。
  17. 一种电子装置，包括存储器和处理器，其特征在于，所述存储器中存储有计算机程序，所述处理器被设置为运行所述计算机程序以执行所述权利要求1至7任一项中所述的方法。
PCT/CN2018/072779 2017-03-20 2018-01-16 一种终端在4g和5g网络间移动的方法、装置和设备 Ceased WO2018171310A1 (zh)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP24158827.6A EP4351225A3 (en) 2017-03-20 2018-01-16 Method, apparatus and device for allowing terminal to move between 4g and 5g networks
EP18772060.2A EP3606165B1 (en) 2017-03-20 2018-01-16 Method, apparatus and device for allowing terminal to move between 4g and 5g networks
US16/575,550 US11159991B2 (en) 2017-03-20 2019-09-19 Method, apparatus and device for allowing terminal to move between 4G and 5G networks
US17/507,402 US11641601B2 (en) 2017-03-20 2021-10-21 Method, apparatus and device for allowing terminal to move between 4G and 5G networks

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710166973.6A CN108632915B (zh) 2017-03-20 2017-03-20 一种终端在4g和5g网络间移动的方法、装置和设备
CN201710166973.6 2017-03-20

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US16/575,550 Continuation US11159991B2 (en) 2017-03-20 2019-09-19 Method, apparatus and device for allowing terminal to move between 4G and 5G networks

Publications (1)

Publication Number Publication Date
WO2018171310A1 true WO2018171310A1 (zh) 2018-09-27

Family

ID=63584844

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/072779 Ceased WO2018171310A1 (zh) 2017-03-20 2018-01-16 一种终端在4g和5g网络间移动的方法、装置和设备

Country Status (4)

Country Link
US (2) US11159991B2 (zh)
EP (2) EP3606165B1 (zh)
CN (1) CN108632915B (zh)
WO (1) WO2018171310A1 (zh)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111031581A (zh) * 2018-10-09 2020-04-17 中兴通讯股份有限公司 一种4/5g互切换场景下锚定smf+pgw-c的方法及系统
WO2020078417A1 (en) * 2018-10-17 2020-04-23 Mediatek Singapore Pte. Ltd. Improved guti allocation after establishment of mobile-terminated connection in mobile communications
CN111200849A (zh) * 2018-11-19 2020-05-26 电信科学技术研究院有限公司 一种用户路由更新方法及设备
WO2020167982A1 (en) * 2019-02-14 2020-08-20 Apple Inc. Service request procedures in information centric networking for next generation cellular networks
US11159991B2 (en) 2017-03-20 2021-10-26 Zte Corporation Method, apparatus and device for allowing terminal to move between 4G and 5G networks
EP3979682A4 (en) * 2019-06-21 2022-07-27 Huawei Technologies Co., Ltd. METHOD AND SYSTEM FOR IMPLEMENTING CONTINUITY OF SERVICE, RELATED DEVICE AND SYSTEM
EP4221360A1 (en) * 2018-12-14 2023-08-02 Datang Mobile Communications Equipment Co., Ltd. Data transmission methods in amf entity, smf entity and mme entity for transmitting buffered downklink data of a ue in eps-to-5gs mobility
US12238022B2 (en) 2018-01-03 2025-02-25 Datang Mobile Communications Equipment Co., Ltd. Resource mapping method and device

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109005565B (zh) * 2017-06-06 2022-11-04 大唐移动通信设备有限公司 一种会话管理方法和装置
KR20200035143A (ko) * 2017-08-11 2020-04-01 후아웨이 테크놀러지 컴퍼니 리미티드 Ｐｄｕ 유형 설정 방법, ｕｅ 정책 설정 방법 및 관련 엔티티
KR102329925B1 (ko) * 2017-08-14 2021-11-23 삼성전자 주식회사 4g/5g 동시 등록된 이동 통신 단말을 위한 네트워크 이동시 데이터 동기화 제공 방안
CN111357339B (zh) 2017-11-13 2022-12-20 Lg电子株式会社 在无线通信系统中发送和接收与切换接入有关的信号的方法及其设备
CN111480355B (zh) * 2017-12-21 2024-04-12 瑞典爱立信有限公司 用于使用临时标识符来注册ims订户的方法和装置
US12058763B2 (en) * 2018-02-18 2024-08-06 Lg Electronics Inc. Signal transmission and reception method by SMF in wireless communication system and device therefor
WO2019183846A1 (zh) * 2018-03-28 2019-10-03 Oppo广东移动通信有限公司 切换的方法、用户设备、网络设备及计算机存储介质
AU2018447611B2 (en) * 2018-10-31 2024-10-03 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Protocol data unit session status indication method, terminal device, and storage medium
CN111148274B (zh) * 2018-11-01 2024-04-12 北京三星通信技术研究有限公司 用于会话建立的方法、会话管理功能实体、基站和存储介质
WO2020147001A1 (zh) * 2019-01-15 2020-07-23 Oppo广东移动通信有限公司 激活资源的方法和设备
CN111615188B (zh) * 2019-02-22 2021-10-01 华为技术有限公司 数据传输方法、装置及计算机存储介质
CN111641947B (zh) * 2019-03-01 2021-12-03 华为技术有限公司 密钥配置的方法、装置和终端
EP3737127B1 (en) * 2019-05-10 2025-09-24 Ntt Docomo, Inc. Mobile communication network arrangement and method for operating a mobile communication network arrangement to support inter-core network roaming
CN112333778B (zh) * 2019-08-05 2022-02-08 华为技术有限公司 一种终端定位方法、装置及系统
CN112492504A (zh) * 2019-08-21 2021-03-12 中兴通讯股份有限公司 位置获取方法、装置、hss、udm设备及存储介质
CN112583619B (zh) * 2019-09-30 2025-01-24 中国移动通信有限公司研究院 一种服务调用方法及网络设备
CN112911658B (zh) * 2019-12-04 2022-03-29 大唐移动通信设备有限公司 一种通信方法及装置
EP4115695B1 (en) * 2020-03-26 2025-05-28 Guangdong Oppo Mobile Telecommunications Corp., Ltd. System and method for optimizing pdn synchronization between user equipment and network
CN117730556A (zh) * 2021-07-12 2024-03-19 瑞典爱立信有限公司 用于多播/广播服务的方法和装置
CN115397003B (zh) * 2022-08-18 2026-04-17 展讯半导体(成都)有限公司 注册信息同步方法、装置、设备及介质
US12457650B2 (en) * 2022-12-07 2025-10-28 Verizon Patent And Licensing Inc. Device detection and network slice assignment service
EP4631282A1 (en) * 2022-12-08 2025-10-15 Qualcomm Incorporated Pdu transfer in an inter-amf handover without inter amf interface
US20250048302A1 (en) * 2023-08-01 2025-02-06 T-Mobile Usa, Inc. Avoiding redundant voice capability updates from the amf to the udm
US12581369B2 (en) 2023-08-09 2026-03-17 T-Mobile Usa, Inc. Optimized registration and deregistration messaging to the UDM
US12538188B2 (en) * 2023-09-26 2026-01-27 T-Mobile Innovations Llc Interworking between fifth generation core (5GC) and evolved packet core (EPC) in wireless communication networks
KR20260048921A (ko) * 2024-10-04 2026-04-13 삼성전자주식회사 무선 통신 시스템에서 제한된 접속을 통해 단말의 이동을 지원하기 위한 장치 및 방법

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103430580A (zh) * 2011-01-21 2013-12-04 黑莓有限公司 用于确定针对(本地)卸载使用的连接的连接上下文的网络装置和过程
CN104185302A (zh) * 2013-05-27 2014-12-03 电信科学技术研究院 一种pdn连接管理方法和设备
US20160057658A1 (en) * 2014-08-19 2016-02-25 Qualcomm Incorporated Admission control and load balancing

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0619409D0 (en) * 2006-10-02 2006-11-08 Vodafone Plc Telecommunications networks
CN101668280B (zh) * 2008-09-01 2012-07-04 华为技术有限公司 网络切换方法和管理设备、终端及归属位置服务器
CN102480755A (zh) * 2010-11-24 2012-05-30 北京三星通信技术研究有限公司 向Femtocell进行激活切换的方法及适用于该方法的位置信息服务器
US8837405B2 (en) * 2011-02-24 2014-09-16 Qualcomm Incorporated Methods and apparatus to reduce a time to transfer multiple PDN contexts during inter-radio access technology handoff
US20120230293A1 (en) * 2011-03-08 2012-09-13 Edward Grinshpun Method of performing an inter-technology handoff in a loosely coupled architecture
EP2696611B1 (en) * 2011-04-03 2017-08-16 LG Electronics Inc. Method and apparatus for supporting mobility of selected ip traffic offload, sipto, in a communication network
WO2013091214A1 (zh) * 2011-12-22 2013-06-27 华为技术有限公司 接入方法及移动管理设备、用户设备
US9408246B2 (en) * 2013-06-28 2016-08-02 Alcatel Lucent System and method for seamless Wi-Fi to UMTS handover
US9713057B2 (en) * 2013-07-26 2017-07-18 Qualcomm Incorporated Techniques for selected internet protocol traffic offload support at an assisting eNodeB
WO2015069030A1 (ko) * 2013-11-11 2015-05-14 엘지전자(주) 블루투스 연결 방법 및 장치
US10334485B2 (en) * 2014-04-15 2019-06-25 Nokia Solutions And Networks Oy Interworking with bearer-based system
CN105992394A (zh) * 2015-01-29 2016-10-05 中兴通讯股份有限公司 网络连接方法及装置
WO2016126238A1 (en) * 2015-02-03 2016-08-11 Nokia Solutions And Networks Oy Improvements in dual connectivity for different access networks
EP3375223B1 (en) * 2015-11-12 2022-08-03 Telefonaktiebolaget LM Ericsson (PUBL) Method for cell selection
KR102764958B1 (ko) * 2016-02-02 2025-02-07 삼성전자주식회사 비-무결성 보호 메시지를 관리하는 방법 및 장치
ES2929669T3 (es) * 2017-01-09 2022-11-30 Lg Electronics Inc Método para el interfuncionamiento entre redes en un sistema de comunicación inalámbrica y aparatos para el mismo
CN108632915B (zh) 2017-03-20 2022-07-15 中兴通讯股份有限公司 一种终端在4g和5g网络间移动的方法、装置和设备

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103430580A (zh) * 2011-01-21 2013-12-04 黑莓有限公司 用于确定针对(本地)卸载使用的连接的连接上下文的网络装置和过程
CN104185302A (zh) * 2013-05-27 2014-12-03 电信科学技术研究院 一种pdn连接管理方法和设备
US20160057658A1 (en) * 2014-08-19 2016-02-25 Qualcomm Incorporated Admission control and load balancing

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
QUALCOMM INCORPORATED: "Mobility inside 5GC and between 5GC and EPC for in- terworking scenarios", 3GPP SA WG2 MEETING #S2-119, S2-170743, 17 February 2017 (2017-02-17), XP051216864 *
See also references of EP3606165A4 *

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11159991B2 (en) 2017-03-20 2021-10-26 Zte Corporation Method, apparatus and device for allowing terminal to move between 4G and 5G networks
US11641601B2 (en) 2017-03-20 2023-05-02 Zte Corporation Method, apparatus and device for allowing terminal to move between 4G and 5G networks
US12238022B2 (en) 2018-01-03 2025-02-25 Datang Mobile Communications Equipment Co., Ltd. Resource mapping method and device
CN111031581A (zh) * 2018-10-09 2020-04-17 中兴通讯股份有限公司 一种4/5g互切换场景下锚定smf+pgw-c的方法及系统
CN111031581B (zh) * 2018-10-09 2023-01-03 中兴通讯股份有限公司 一种4/5g互切换场景下锚定smf+pgw-c的方法及系统
WO2020078417A1 (en) * 2018-10-17 2020-04-23 Mediatek Singapore Pte. Ltd. Improved guti allocation after establishment of mobile-terminated connection in mobile communications
US11140655B2 (en) 2018-10-17 2021-10-05 Mediatek Singapore Pte. Ltd. GUTI allocation after establishment of mobile-terminated connection in mobile communications
CN111200849A (zh) * 2018-11-19 2020-05-26 电信科学技术研究院有限公司 一种用户路由更新方法及设备
CN111200849B (zh) * 2018-11-19 2022-08-09 大唐移动通信设备有限公司 一种用户路由更新方法及设备
EP4221360A1 (en) * 2018-12-14 2023-08-02 Datang Mobile Communications Equipment Co., Ltd. Data transmission methods in amf entity, smf entity and mme entity for transmitting buffered downklink data of a ue in eps-to-5gs mobility
WO2020167982A1 (en) * 2019-02-14 2020-08-20 Apple Inc. Service request procedures in information centric networking for next generation cellular networks
US12389312B2 (en) 2019-02-14 2025-08-12 Apple Inc. Service request procedures in information centric networking for next generation cellular networks
US11889297B2 (en) 2019-06-21 2024-01-30 Huawei Technologies Co., Ltd. Method, apparatus and system for service continuity between a 4G network and a 5G network
EP4319336A3 (en) * 2019-06-21 2024-04-17 Huawei Technologies Co., Ltd. Service continuity implementation method, related apparatus, and system
EP3979682A4 (en) * 2019-06-21 2022-07-27 Huawei Technologies Co., Ltd. METHOD AND SYSTEM FOR IMPLEMENTING CONTINUITY OF SERVICE, RELATED DEVICE AND SYSTEM

Also Published As

Publication number Publication date
CN108632915A (zh) 2018-10-09
EP3606165B1 (en) 2026-04-08
CN108632915B (zh) 2022-07-15
EP3606165A4 (en) 2020-03-18
EP4351225A2 (en) 2024-04-10
EP4351225A3 (en) 2024-06-12
US11159991B2 (en) 2021-10-26
US20200084675A1 (en) 2020-03-12
EP3606165A1 (en) 2020-02-05
US20220225176A1 (en) 2022-07-14
US11641601B2 (en) 2023-05-02

Similar Documents

Publication Publication Date Title
WO2018171310A1 (zh) 一种终端在4g和5g网络间移动的方法、装置和设备
US11805567B2 (en) Method and apparatus for initiating user plane path re-establishment and communications system
CN110278619B (zh) 一种pdu会话建立的方法和装置
WO2018177277A1 (zh) 网络系统中状态信息的处理方法、装置及存储介质
WO2018137489A1 (zh) 一种策略控制方法、装置、系统及存储介质
WO2018145669A1 (zh) 一种业务分流实现方法及装置
WO2019024677A1 (zh) 网络切换的方法、装置及系统
WO2013082984A1 (zh) 一种附着到e-utran的方法及移动性管理实体
CN109673060A (zh) 一种通信方法及装置
WO2018059401A1 (zh) 网络切换方法、装置及系统，网络接入方法及装置
US20230413371A1 (en) Selection of transmission method for small data transmission
JP2023120194A (ja) 接続確立のための方法および装置
WO2020233688A1 (zh) 语音通信方法及其装置
CN103229525B (zh) 一种处理封闭用户组签约数据请求的方法、设备和系统
WO2018010583A1 (zh) 网络系统
CN112911658B (zh) 一种通信方法及装置
CN112166645B (zh) 一种提高寻呼可靠性的方法及装置、计算机存储介质
WO2018045928A1 (zh) 网络拥塞控制的方法及装置
CN107018555A (zh) 网络接入方法、网络接入控制方法、用户终端及基站
WO2019034058A1 (zh) 消息发送、信息获取方法、装置、终端及接入及移动性管理实体
CN104754668A (zh) 一种网间互操作方法及装置
WO2018130053A1 (zh) 一种流程冲突处理方法及装置
WO2018041097A1 (zh) 网络切换方法及装置
CN106488520B (zh) 一种电路域回落呼叫方法及装置
WO2016029458A1 (zh) 一种移动性管理流程发起方法和设备

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18772060

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2018772060

Country of ref document: EP

Effective date: 20191021

WWG Wipo information: grant in national office

Ref document number: 2018772060

Country of ref document: EP