WO2013064102A1 - Procédé, dispositif et système de mise à jour de position - Google Patents

Procédé, dispositif et système de mise à jour de position Download PDF

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Publication number
WO2013064102A1
WO2013064102A1 PCT/CN2012/084008 CN2012084008W WO2013064102A1 WO 2013064102 A1 WO2013064102 A1 WO 2013064102A1 CN 2012084008 W CN2012084008 W CN 2012084008W WO 2013064102 A1 WO2013064102 A1 WO 2013064102A1
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Prior art keywords
network
location update
terminal
network element
circuit domain
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PCT/CN2012/084008
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English (en)
Chinese (zh)
Inventor
刘竞翔
朱进国
邹常乐
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中兴通讯股份有限公司
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Publication of WO2013064102A1 publication Critical patent/WO2013064102A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information

Definitions

  • the present invention relates to the field of communications, and in particular to a location update method, apparatus, and system.
  • SAE System Architecture Evolution
  • 3GPP 3rd Generation Partnership Project
  • the SAE includes a Long Term Evolution (LTE) and an Evolved Packet Core (EPC).
  • FIG. 1 is a schematic diagram of a related art SAE and a legacy circuit domain switching network. 1 The function of each network element is described as follows.
  • UE has access to the Universal Mobile Telecommunication System Radio Access Network/GSM EDGE Radio Access Network (UTRAN/GERAN)
  • UTRAN stands for 3G
  • GERAN stands for 2G
  • LTE two wireless networks. Due to capacity limitations and energy saving requirements, UEs can only reside in one wireless system (called Single Radio) at the same time. For example, when the UE camps on LTE, it cannot receive paging from UTRAN/GERAN. Message.
  • An evolved NodeB eNodeB
  • the eNodeB provides radio resources for UE access and establishes an S1 control plane link with the core network MME.
  • Mobility Management Entity is a control plane entity that temporarily stores user data. It is responsible for managing and storing UE context (such as UE/user ID, mobility management status, user security parameters, etc.). The user is assigned a temporary identifier GUTKGlobally Unique Temporary Identity (Globally Unique Temporary Identity), and the MME is responsible for authenticating the user when the user accesses from LTE.
  • MME Mobility Management Entity
  • GUTKGlobally Unique Temporary Identity Globally Unique Temporary Identity
  • the SAE Gateway (System Architecture Evolution GW, SAE GW for short) is a user plane entity responsible for user plane data routing processing.
  • the SAE GW is generally divided into a Serving Gateway Serving GW and a Packet Data Network Gateway PDN GW.
  • the Serving GW is responsible for mobility anchor between LTE and UMTS.
  • PDN GW is responsible for UE accessing PDN.
  • (Packet Data Network, packet data network) gateway function assign users IP (Internet Protocol) address.
  • the PDN GW and the Serving GW may be combined in one physical entity.
  • the home subscriber server (HSS) is used to store the subscriber's subscription data and record the MME name (MME NAME) where the subscriber is located.
  • Figure 1 also shows the architecture of a conventional circuit domain switching network.
  • the core network element has a Mobile Switching Center (MSC) and a Visitor Location Register (VLR). The MSC and the VLR are physically combined.
  • MSC Mobile Switching Center
  • VLR Visitor
  • the 3G radio access controller (Radio Network Controller, RNC for short) or the base station controller (BSC) is responsible for controlling and managing the wireless activities of users.
  • the traditional circuit domain switching network uses a Home Location Register (HLR) to store the subscriber's subscription information and the address of the VLR. In the called call, the HLR can obtain the mobile Subscriber Roaming Number (MSRN) from the VLR. In Figure 1, the HLR and HSS are served by one physical network element.
  • the Gateway Mobile Switching Center (GMSC) is used to route calls to the MSC where the user is located. When receiving a call from a mobile subscriber, the GMSC obtains the MSRN of the subscriber through the HLR, and then presses the call according to the MSRN route.
  • the MME network element of the SAE and the VLR of the traditional circuit domain switching network are connected through the SGs interface.
  • CSFB Circuit Switch Fallback
  • a UE that can fall back to the traditional circuit domain switching network for service is called a dual mode single radio UE.
  • the CSFB technology establishes an SGs interface between the MME of the SAE and the VLR of the traditional circuit domain switching network.
  • the MME may enable the UE roaming under the LTE to trigger the location update process of the traditional circuit domain switching network, so that the UE registers in the traditional circuit domain switching network while the SAE is active.
  • the process is as shown in FIG. 2, and includes the following steps S202 to S214.
  • Step S202 The UE in the LTE is powered on or changes the Tracking Area (TA), and initiates an ATTACH or Tracking Area Update (TAU) operation.
  • Step S204 The MME receives the above message, and performs registration in the SAE to the HSS.
  • LAI Location Area Identity
  • the MME sends a location update request to the VLR.
  • Step S208 If the VLR has no user data, or the VLR considers that the user data is unreliable, the VLR sends a location update request to the HLR.
  • the VLR returns a location update complete message to the MME, and modifies the state of the SGs interface to be activated.
  • FIG. 3 is a related art LTE user falls back to A conventional circuit domain switching network, which is a flowchart of a process of receiving a traditional circuit domain switching network incoming call. As shown in FIG. 3, the method includes the following steps S302 to S318.
  • Step S302 After receiving the initial address message (I AM) of the external network, the GMSC finds the called HLR according to the called MSISDN number (ie, the user's phone number), and sends the obtained routing information to the HLR (Send Routing Information (SRI) request, with the user's MSISDN number.
  • MSISDN number ie, the user's phone number
  • the HLR finds the MSC/VLR number registered by the user according to the MSISDN number, and sends a PRN (Provide Roaming Number) request to the MSCWLR, where the MSC/VLR is the MSC/VLR that the UE registers from the LTE/EPC.
  • the MSC/VLR allocates the temporary subscriber identity MSRN and returns it to the HLR.
  • the MSRN uniquely identifies the MSC/VLR and the called UE.
  • the HLR returns an SRI response to the GMSC, where the MSRN is carried.
  • S308 The GMSC routes the call to the MSC/VLR according to the MSRN.
  • the MSC/VLR initiates a CS paging process from the SGs to the MME, and the MME then initiates a CS paging process within the LTE.
  • S312 The UE falls back to the circuit domain and returns a paging response from the traditional circuit domain switching network.
  • S314 If necessary, the MSC/VLR performs an access operation.
  • S316 The MSC/VLR sends the call setup request Setup to the UE.
  • S318 The MSC/VLR, the RNC, or the BSC, the UE completes the remaining called establishment process.
  • the MSC/VLR in the LTE coverage area can form a pool domain (POOL), which can play a role in disaster recovery on the one hand, and reduce the number of MSC/VLRs that need to be upgraded to support the SGs interface on the other hand.
  • POOL pool domain
  • 4 is a structural diagram of such a network, in which the RNC and the BSC in the pool domain are connected as wireless access nodes, and all VLRs/MSCs in the pool.
  • the VLR/MSC in the POOL ensures that the UE's radio interface message can always be routed to the MSC/VLR at the RNC and BSC by assigning a Temporary Subscriber Identity (TMSI) to the UE.
  • TMSI Temporary Subscriber Identity
  • RI Network Resource Identifier
  • FIG. 5 is a process of the traditional circuit domain UE receiving an incoming call request after the MSC/VLR is restarted in the POOL, and includes the following steps S502 to S524.
  • Step S502 The GMSC receives the initial address message, and sends a request for obtaining the routing information to the HLR.
  • Step S504 The HLR sends a request for providing a roaming number to the MSC/VLR according to the recorded MSC/VLR address of the user, where the MSC and the VLR are physically a network element.
  • Step S506 The MSC/VLR has lost the user data because of the restart, so the user data recovery request is sent to the HLR.
  • Step S508 The HLR inserts user data, and the MSC/VLR returns a response.
  • Step S512 The HLR returns to obtain the routing information response to the GMSC, and carries the roaming number.
  • Step S514 The GMSC sends the initial address message to the MSC/VLR by using the roaming number.
  • Step S516 The MSC/VLR receives the initial address message sent from the GMSC, and pages the user. Since there is no TMSI of the user, the paging uses the IMSI as the user identifier.
  • Step S518 The BSC or the RNC receives the paging message, pages the user UE, and records the correspondence between the IMSI and the MSC/VLR.
  • Step S522 The BSC or the RNC receives the paging response, and finds the sending Paging according to the correspondence between the recorded IMSI and the MSC/VLR.
  • the MSC/VLR returns a paging response to the MSC/VLR.
  • Step S524 The MSC/VLR, the RNC, or the BSC, the UE completes the remaining called establishment process.
  • the RNC or the BSC ensures that the IMSI-backed paging response returned by the UE can be routed to the MSC/VLR that sends the paging by saving the relationship between the IMSI and the MSC/VLR number. This method does not apply during the CSFB process.
  • the paging in the CSFB process is initiated by the MME under the LTE network, and the BSC or the RNC does not participate in the paging process, but receives the paging response directly. Therefore, the correspondence between the IMSI and the MSC/VLR cannot be recorded. In this way, the paging response will be routed to other MSC/VLRs in the POOL, and the other MSC/VLR will discard the message, thereby interrupting the call.
  • the network element of the circuit domain switching network in the related art sends a request to the terminal located in the packet domain network, since the location information of the terminal cannot be obtained, the call fails, and an effective solution has not been proposed yet.
  • the present invention provides a location update method, apparatus, and system for a network element of a circuit domain switching network in a related art to transmit a request to a terminal located in a packet domain network, because the location information of the terminal cannot be obtained, resulting in a call failure. To at least solve the problem.
  • a location update method including: a first network element of a circuit domain switching network transmitting a paging command to a terminal located in a packet domain network by using a packet domain network, wherein the paging command Carrying information indicating that the terminal initiates a location update request on the circuit domain switching network after receiving the paging command; the second network element of the circuit domain switching network receives the location update initiated by the terminal Requesting, performing a location update operation of the terminal.
  • the second network element of the circuit domain switching network receives the location update request initiated by the terminal, and performing the location update operation of the terminal includes: the location update that the second network element receives the location Requesting forwarding to an MSC/VLR in the mobile switching center/visit location register MSC/VLR pool of the circuit switched network, triggering the one MSC/VLR to correspond to the home location register HLR according to the location update request
  • the location update operation of the terminal Preferably, the paging command carries an International Mobile Subscriber Identity (IMSI) as an identifier of the terminal.
  • IMSI International Mobile Subscriber Identity
  • the sending, by the first network element of the circuit domain switching network, the paging command to the terminal located in the packet domain network includes: sending, by the first network element, the paging command to the terminal by using a mobility management entity MME.
  • the first network element comprises: a location visit register (VLR).
  • the second network element comprises: a base station system controller/radio network controller (BSC/RNC).
  • the packet domain network comprises: Long Term Evolution (LTE), Advanced Long Term Evolution (LTE-A), and Global System for Mobile Communications Radio Access Network (UTRAN).
  • a location update method including: receiving, by a terminal in a packet domain network, a paging command from a first network element of a circuit domain switching network, wherein the paging command is carried with an indication And the terminal initiates location update information in the circuit domain switching network after receiving the paging command; the terminal accesses the circuit domain switching network according to the information, and switches to the circuit domain switching network according to the information
  • the second network element sends a location update request.
  • the first network element comprises: a location visit register (VLR).
  • the second network element comprises: a base station system controller/radio network controller (BSC/RNC).
  • a location update method including: a third network element of a circuit domain switching network receives a paging response from a terminal to initiate a paging command to the third network element, where the terminal Located in the packet domain network; the third network element of the circuit domain switching network performs location update on the terminal.
  • the third network element of the circuit domain performs location update on the terminal, where: the third network element forwards the received location update request to a mobile switching center/access of the circuit domain switching network.
  • An MSC/VLR in the location register MSC/VLR pool triggers the one MSC/VLR to perform a location update operation corresponding to the terminal according to the location update request to the home location register HLR.
  • the third network element comprises: a location visit register.
  • a location update system including: a first network element, configured to send a paging command to a terminal located in a packet domain network by using a packet domain network, where the paging command carries Information indicating that the terminal initiates a location update request on the circuit domain switching network after receiving the paging command; and the second network element is configured to receive the location update request initiated by the terminal, and perform the The location update operation of the terminal.
  • a location update apparatus which is applied to a terminal in a packet domain network, and includes: a receiving module, configured to receive a paging command from a first network element of the circuit domain switching network, where The paging command carries information for instructing the terminal to initiate location update on the circuit domain switching network after receiving the paging command; the access module is configured to access the circuit domain according to the information a switching network, configured to send a location update request to a second network element of the circuit domain switching network.
  • a location update system including: a third network element, where the third network element includes: a receiving module, configured to receive a paging from the terminal to initiate a paging command for the network element In response, the terminal is located in a packet domain network; and the location update module is configured to perform location update on the terminal.
  • the first network element of the circuit domain switching network sends a paging command carrying the location update indication to the terminal located in the packet domain network
  • the second network element of the circuit domain switching network receives the location update request initiated by the terminal.
  • the location update is performed to overcome the problem that the terminal of the circuit domain switching network is located in the packet domain network when the paging command is sent by the terminal in the circuit domain switching network, and the location information of the terminal cannot be obtained, thereby causing the call to fail, thereby improving the network element of the circuit domain switching network. Reliability of communicating with terminals in a packet domain network.
  • FIG. 1 is a schematic diagram of a structure of a related art SAE and a conventional circuit domain switching network
  • FIG. 2 is a flowchart of a related art LTE user performing traditional circuit domain switching network registration
  • FIG. 3 is a related art LTE.
  • FIG. 4 is a schematic diagram of a network after a POOL network is used in a conventional circuit domain switching network of the related art LTE coverage area
  • 5 is a flowchart of a process when a legacy circuit domain UE receives an incoming call request after restarting an MSC/VLR in a POOL of the related art
  • FIG. 6 is a first flowchart of a location update method according to an embodiment of the present invention
  • Is a second flowchart of a location update method according to an embodiment of the present invention
  • 8 is a third flowchart of a location update method according to an embodiment of the present invention
  • FIG. 9 is a first structural block diagram of a location update system according to an embodiment of the present invention
  • FIG. 10 is a structure of a location update apparatus according to an embodiment of the present invention.
  • Figure 11 is a second block diagram of a location update system in accordance with an embodiment of the present invention
  • Figure 12 is a flow chart 1 of a call-on according to an embodiment of the present invention
  • Figure 13 is a call-through of a call according to an embodiment of the present invention.
  • FIG. 6 is a first flowchart of a location update method according to an embodiment of the present invention. The method includes the following steps S602 to S604.
  • Step S602 The first network element of the circuit domain switching network sends a paging command to the terminal located in the packet domain network by using the packet domain network, where the paging command carries the indication that the terminal is after receiving the paging command.
  • the circuit domain switching network initiates information of the location update request.
  • Step S604 The second network element of the circuit domain switching network receives the location update request initiated by the terminal, and performs a location update operation of the terminal.
  • the location update is performed to overcome the problem that the circuit domain switching network in the related art sends a paging command to the terminal located in the packet domain network through the packet domain network, and the location information of the terminal cannot be obtained, thereby causing the call to fail, thereby improving the circuit.
  • step S604 may be implemented in the following manner: the second network element of the circuit domain switching network receives the location update request initiated by the terminal, and performs a location update operation of the terminal: the second network element receives the received The location update request is forwarded to an MSC/VLR in the mobile switching center/visit location register (MSC/VLR) pool of the circuit domain switching network, triggering the one MSC/VLR to update the request according to the location
  • the Home Location Register (HLR) performs a location update operation corresponding to the terminal.
  • the preferred embodiment improves the accuracy of obtaining a location update request by forwarding a location update request to an MSC/VLR in the MSC/VLR pool and triggering the one MSC/VLR to the HLR to perform a location update operation corresponding to the terminal.
  • the paging command carries an International Mobile Subscriber Identity (IMSI) as an identifier of the terminal.
  • IMSI International Mobile Subscriber Identity
  • the IMSI is used as the identifier of the terminal, and the terminal is identified by using the identifier of the unified category.
  • step S602 may be implemented by the first network element sending a paging command to a terminal located in the packet domain network by: sending, by the mobility element (MME), the paging command to the paging element The terminal.
  • the reliability of transmitting a paging command is improved.
  • the first network element includes: a location visit register (VLR).
  • the first network element includes a VLR, which improves the reliability of acquiring location information.
  • the second network element includes: a base station system controller/radio network controller (BSC/RNC). The second network element in the preferred embodiment includes: BSC/RNC, which improves the accuracy of performing location update.
  • the packet domain network includes: Long Term Evolution (LTE), Advanced Long Term Evolution (LTE-A), and Global System for Mobile Communications Radio Access Network (UTRAN).
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • UTRAN Global System for Mobile Communications Radio Access Network
  • the preferred embodiment defines that the packet domain network includes: LTE, LTE-A, UTRAN, which expands the application range of the location update method.
  • FIG. 7 is a second flowchart of a location update method according to an embodiment of the present invention. The method includes the following steps S702 to S704. Step S702: The terminal in the packet domain network receives a paging command from the first network element of the circuit domain switching network, where the paging command carries a command to indicate that the terminal initiates in the circuit domain switching network after receiving the paging command.
  • Step S704 The terminal accesses the circuit domain switching network according to the information, and sends a location update request to the second network element of the circuit domain switching network.
  • the terminal receives a paging command from the first network element of the circuit domain switching network, where the paging command carries information indicating that the terminal initiates location update, and then the terminal accesses the circuit domain switching network, and The second network element of the circuit domain switching network sends a location update request, so that the circuit domain switching network can obtain the location update information of the terminal, thereby completing the paging command, and overcoming the related art, the circuit domain switching network is located in the packet domain network.
  • the first network element includes: a location visit register (VLR).
  • VLR location visit register
  • the first network element includes a VLR, which improves the reliability of acquiring location information.
  • the second network element includes: a base station system controller/radio network controller
  • FIG. 8 is a third flowchart of a location update method according to an embodiment of the present invention. The method includes the following steps S802 to S804. Step S802: The third network element of the circuit domain switching network receives a paging response from the terminal to initiate a paging command to the third network element, where the terminal is located in the packet domain network; Step S804: The third network of the circuit domain switching network The location update of the terminal.
  • the third network element of the circuit domain switching network receives the paging response from the paging command of the terminal located in the packet domain network, and the third network element of the circuit domain switching network performs location update on the terminal.
  • the circuit domain switching network sends a paging command to the terminal located in the mobile switching center, the location update information of the terminal is obtained, thereby implementing a service call.
  • step S804 implements a location update of the terminal by the third network element of the circuit domain network in the following manner: the third network element forwards the received location update request to the mobile circuit switching network.
  • An MSC/VLR in the exchange center/visit location register MSC/VLR pool triggers the one MSC/VLR to perform a location update operation corresponding to the terminal based on the location update request to the home location register HLR.
  • the preferred embodiment improves the accuracy of obtaining a location update request by forwarding a location update request to an MSC/VLR in the MSC/VLR pool and triggering the one MSC/VLR to the HLR to perform a location update operation corresponding to the terminal. .
  • the third network element includes: a location visit register.
  • the first network element includes a VLR, which improves the reliability of acquiring location information.
  • a storage medium is also provided, and the location update software is stored in the storage medium, and the storage medium includes, but is not limited to, an optical disc, a floppy disk, a hard disk, a rewritable memory, and the like.
  • the embodiment of the present invention further provides a location update system, where the location update system can be used to implement the location update method and the preferred implementation manner, which have been described, and will not be described again.
  • the module is explained.
  • the term "module" may implement a combination of software and/or hardware of a predetermined function.
  • FIG. 9 is a first structural block diagram of a location update system according to an embodiment of the present invention.
  • the system can be applied to a circuit domain switching network.
  • the system includes: a first network element 92 and a second network element 94.
  • a first network element 92 configured to send, by using a packet domain network, a paging command to a terminal located in a packet domain network, where the paging command carries an indication that the terminal is after receiving the paging command
  • the circuit domain switching network initiates the location update request information.
  • the second network element 94 is coupled to the first network element 92, and is configured to receive the location update request initiated by the terminal, and perform a location update operation of the terminal.
  • a location update software is also provided for performing the technical solutions described in the above embodiments and preferred embodiments.
  • a storage medium is also provided, and the location update software is stored in the storage medium, and the storage medium includes, but is not limited to, an optical disc, a floppy disk, a hard disk, a rewritable memory, and the like.
  • the embodiment of the present invention further provides a location update device, where the location update device can be used to implement the location update method and the preferred implementation manner, which have been described, and will not be described again.
  • the module is explained. As used hereinafter, the term "module" may implement a combination of software and/or hardware of a predetermined function.
  • FIG. 10 is a structural block diagram of a location updating apparatus according to an embodiment of the present invention.
  • the apparatus may be applied to a terminal.
  • the apparatus includes: a receiving module 1002, an access module 1004, and a sending module 1006.
  • the structure is described in detail.
  • the receiving module 1002 is configured to receive a paging command from the first network element of the circuit domain switching network, where the paging command carries a command to indicate that the terminal initiates a location in the circuit domain switching network after receiving the paging command.
  • the access module 1004 is coupled to the receiving module 1002, and configured to access the circuit domain switching network according to the information received by the receiving module 1002.
  • the sending module 1006 is coupled to the access module 1004 and configured to the access module.
  • the second network element of the circuit switched network that is accessed by 1004 sends a location update request.
  • a location update software is also provided for performing the technical solutions described in the above embodiments and preferred embodiments.
  • a storage medium is also provided, and the location update software is stored in the storage medium, and the storage medium includes, but is not limited to, an optical disc, a floppy disk, a hard disk, a rewritable memory, and the like.
  • the embodiment of the present invention further provides a location update system, where the location update system can be used to implement the location update method and the preferred implementation manner, which have been described, and will not be described again.
  • the module is explained.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • FIG. 11 is a second structural block diagram of a location update system according to an embodiment of the present invention. The system can be applied to a circuit domain switching network. As shown in FIG.
  • the system includes: a third network element 112, wherein the third network element 112 includes: a receiving module 1122 and a location updating module 1124.
  • the above structure will be described in detail below.
  • the receiving module 1122 is configured to receive a paging response from the terminal to initiate a paging command to the network element, where the terminal is located in the packet domain network
  • the location updating module 1124 is coupled to the receiving module 1122, and configured to receive the receiving module 1122.
  • the paging response corresponds to the terminal for location update.
  • Preferred Embodiment 1 This preferred embodiment provides a location update method, which includes the following steps S1 to S5.
  • Step SI The VLR of the traditional circuit domain switching network pages the UE in the LTE, and sends a paging command of the SGs interface to the MME, where the parameter is carried, and the UE is required to initiate a location update in the circuit domain after receiving the paging, instead of searching.
  • Step S2 The MME pages the UE, and carries parameters to request the UE to perform location update.
  • Step S3 After receiving the UE, the UE accesses the circuit domain, and initiates a location update according to the foregoing flag, instead of the paging response.
  • Step S4 The BSC or the RNC receives the location update request, and routes the location update request to any MSC/VLR in the POOL.
  • Step S5 The MSC/VLR receives the location update request and performs location update to the HLR. Unlike the paging response, the MSC/VLR processes the location update request normally.
  • the paging of the UE by the VLR uses the IMSI as a flag of the UE.
  • the MME sends the circuit domain service notification to the UE instead of paging, the required location update parameter needs to be carried in the circuit domain service notification.
  • the HLR receives the location update request, sends the cancellation location to the original MSC/VLR, the original MSC/VLR notifies the GMSC to reroute, and the GMSC obtains the roaming number of the new MSC/VLR from the HLR, thereby enabling the call to be connected.
  • Preferred Embodiment 2 This preferred embodiment provides a location update method, which includes the following steps S2 to S10. Step S2: The VLR of the traditional circuit domain switching network pages the UE in the LTE, and sends a paging command of the SGs interface to the MME, where the parameter is carried, and the UE is required to initiate a location update in the circuit domain after receiving the paging, instead of searching. Call answer.
  • Step S4 The MME pages the UE.
  • Step S6 After receiving the UE, the UE accesses the circuit domain and returns a paging response.
  • Step S8 The BSC or the RNC receives the paging response, and routes the paging response to any MSC/VLR in the POOL.
  • Step S10 The MSC/VLR receives the paging response, and performs a location update process to the HLR.
  • the paging of the UE by the VLR uses the IMSI as a flag of the UE.
  • the MME sends the circuit domain service notification to the UE instead of paging, the required location update parameter needs to be carried in the circuit domain service notification.
  • the HLR receives the location update request, sends the cancellation location to the original MSC/VLR, the original MSC/VLR notifies the GMSC to reroute, and the GMSC obtains the roaming number of the new MSC/VLR from the HLR, thereby enabling the call to be connected.
  • the MSC/VLR pages the LTE user through the IMSI
  • the message returned by the UE is routed to the new MSC/VLR, and the embodiment of the present invention performs the location update processing by the new MSC/VLR. Enable the call to be connected.
  • the third embodiment of the present invention provides a location update method.
  • FIG. 12 is a flowchart 1 of the call-on according to the embodiment of the present invention. As shown in FIG. 12, the method includes the following steps S1202 to S1242. Step S1202: The GMSC receives the initial address message and sends a request for obtaining the routing information to the HLR. Step S1204: The HLR records the user in the MSC/VLR1, and sends a request for providing a roaming number to the MSC/VLR1.
  • Step S1206 The MSC/VLR1 has lost the user data because of the restart, so the request for restoring the user data is sent to the HLR.
  • Step S 1208 The HLR inserts user data, where the MME name where the UE is currently located is carried, and the MSC/VLR1 returns a response.
  • Step S1210 The MSC/VLR1 returns a recovery user data response and returns the roaming number to the HLR.
  • Step S1212 The HLR returns a routing information response to the GMSC, carrying the roaming number.
  • Step S1216 The MSC/VLR1 receives the IAM message sent from the GMSC, and uses the obtained MME name to send a paging command to the user UE under the LTE through the SGs interface, where the parameter carries the parameter, and the UE is required to perform location update. At the same time, since there is no TMSI of the user, the paging uses the IMSI as the user identity.
  • Step S1218 The MME receives the paging of the SGs interface, and if the UE is idle, sends a paging message, otherwise sends a circuit domain service notification message, where the carrying parameter requires the UE to perform location update.
  • Step S1220 The UE receives the message, returns to the circuit switched domain, and initiates a location update after accessing the RNC or the BSC.
  • Step S1222 After receiving the RNC or the BSC, the location update is routed to the MSC/VLR2 processing in the POOL.
  • Step S1224 The MSC/VLR2 performs location update processing, sends a location update request to the HLR, and performs location update processing between the two.
  • Step S1226 The HLR sends a cancel location message to the MSC/VLR1, and the MSC/VLR returns a response.
  • Step S1228 The MSC/VLR1 sends a resume call control message to the GMSC, and the GMSC returns a response.
  • Step S1230 The GMSC releases the call with the MSC/VLR1.
  • Step S1232 The GMSC re-enters the HLR to obtain the roaming number, and sends a request for obtaining the routing information to the HLR.
  • Step S1234 The HLR obtains the roaming number from the MSC/VLR2.
  • Step S1236 The HLR returns the roaming number of the MSC/VLR2 to the GMSC by obtaining a routing information response.
  • Step S1238 The GMSC sends an initial address message through a new roaming number, and routes the call to
  • Step S1240 The MSC/VLR2 sends a call setup message to the UE.
  • Step S1242 The MSC/VLR2 and the UE complete the remaining circuit domain called call setup process.
  • Preferred Embodiment 4 This embodiment provides a location update method.
  • a traditional circuit domain switch is formed into a POOL network in an LTE coverage area, where the IMS/VLR is restarted and the IMSI is used for pre-paging, the UE Initiate The process of location update and connection of a call
  • FIG. 13 is a flow chart 2 of a call-on according to an embodiment of the present invention. As shown in FIG. 13, the method includes the following steps S1302 to S1334.
  • Step S1302 The GMSC receives the initial address message, and sends a request for obtaining the routing information to the HLR.
  • Step S1304 The HLR records the user in the MSC/VLR1, and sends a request for providing a roaming number to the MSC/VLR1.
  • Step S1306 The MSC/VLR1 has lost the user data because of the restart, so the user data recovery request is sent to the HLR.
  • Step S1310 The MSC/VLR1 returns a recovery user data response.
  • Step S1312 After acquiring the user data, the MSC/VLR1 initiates a pre-paging process, and sends a paging command to the user UE under the LTE through the SGs interface, where the parameters are carried, and the UE is required to perform location update. At the same time, since there is no TMSI of the user, the paging uses the IMSI as the user identity.
  • Step S1314 The MME receives the paging of the SGs interface, and if the UE is idle, sends a paging message, otherwise sends a circuit domain service notification message, where the carrying parameter requires the UE to perform location update.
  • Step S1316 The UE receives the message, falls back to the circuit switched domain, and initiates a location update after accessing the RNC or the BSC.
  • Step S1318 After receiving the RNC or the BSC, the location update is routed to the MSC/VLR2 processing in the POOL.
  • Step S1320 The MSC/VLR2 performs location update processing, sends a location update request to the HLR, and performs location update processing between the two.
  • Step S1324 The HLR re-enters the MSC/VLR2 to obtain the roaming number, and sends a message providing the roaming number to
  • Step S1326 The MSC/VLR2 returns to provide a roaming number response.
  • Step S1328 The roaming number of the HLI MSC/VLR2 is returned to the GMSC by obtaining a routing information response.
  • Step S1330 The GMSC sends an initial address message through the roaming number to route the call to the MSC/VLR2.
  • Step S1332 The MSC/VLR2 sends a call setup message to the UE.
  • Step S1334 The MSC/VLR2 and the UE complete the remaining circuit domain called call setup process.
  • This embodiment provides a location update method. In this embodiment, an LTE coverage area is described.
  • a traditional circuit domain switch constitutes a POOL network.
  • FIG. 14 is a flowchart 3 of the call-on according to the embodiment of the present invention. As shown in FIG. 14, the method includes the following steps S1402 to Step S1442. Step S1402: The GMSC receives the initial address message, and sends a request for obtaining the routing information to the HLR. Step S1404: The HLR records the user in the MSC/VLR1, sends a request for providing a roaming number to
  • Step S1406 The MSC/VLR1 has lost the user data because of the restart, so a request for restoring the user data is sent to the HLR.
  • Step S1408 The HLR inserts user data, where the MME name where the UE is currently located is carried, and the MSC/VLR1 returns a response.
  • Step S1410 The MSC/VLR1 returns a recovery user data response and returns the roaming number to the HLR.
  • Step S1414 The GMSC sends the IAM message to the MSC/VLR1 using the roaming number.
  • Step S1416 The MSC/VLR1 receives the IAM message sent from the GMSC, and uses the obtained MME name to send a paging command to the user UE under the LTE through the SGs interface. Since there is no user's TMSI, the paging uses the IMSI as the user. Logo.
  • Step S1418 The MME receives the paging of the SGs interface, and if the UE is idle, sends a paging message, otherwise sends a circuit domain service notification message.
  • Step S1420 The UE receives the message, returns to the circuit switched domain, and returns to the paging response after accessing the RNC or the BSC.
  • Step S1422 After receiving the RNC or the BSC, the paging response is routed to the MSC/VLR2 processing in the POOL.
  • Step S1424 After receiving the paging response, the MSC/VLR2 initiates a location update, sends a location update request to the HLR, and performs location update processing between the two.
  • Step S1426 The HLR sends a cancel location message to the MSC/VLR1, and the MSC/VLR returns a response.
  • Step S1428 The MSC/VLR1 sends a resume call control message to the GMSC, and the GMSC returns a response.
  • Step S1430 The GMSC releases the call with the MSC/VLR1.
  • Step S1432 The GMSC re-enters the HLR to obtain the roaming number, and sends a request for obtaining the routing information to the HLR.
  • Step S1434 The HLR obtains the roaming number from the MSC/VLR2.
  • Step S1436 The HLR returns the roaming number of the MSC/VLR2 to the GMSC by obtaining a routing information response.
  • Step S1438 The GMSC sends an initial address message through a new roaming number, and routes the call to
  • Step S1440 The MSC/VLR2 sends a call setup message to the UE.
  • Step S1442 The MSC/VLR2 and the UE complete the remaining circuit domain called call setup process.
  • a location update method, apparatus, and system are provided. By carrying a required location update parameter in a paging message of an SGS interface, a UE that is accessed under a packet domain network is initiated to replace a location update request when it falls back to the circuit domain. Paging the response, or let the UE return a paging response, and the new MSC/VLR initiates a location update after receiving the paging response, so that the called process of the circuit domain fallback is completed, the call can be connected, and the network service is improved. quality.

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  • Computer Networks & Wireless Communication (AREA)
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  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention se rapporte à un procédé, à un dispositif et à un système de mise à jour de position. Le procédé selon l'invention comprend les étapes suivantes : le premier élément de réseau d'un réseau du domaine à commutation de circuits transmet une commande de radiomessagerie à un terminal situé dans un réseau du domaine à commutation de paquets, via le réseau du domaine à commutation de paquets, la commande de radiomessagerie contenant les informations nécessaires pour commander au terminal d'initier une demande de mise à jour de position dans le réseau du domaine à commutation de circuits une fois qu'il a reçu la commande de radiomessagerie; le second élément de réseau du réseau du domaine à commutation de circuits reçoit la demande de mise à jour de position initiée par le terminal, et il met à jour la position du terminal. La présente invention est avantageuse en ce qu'elle améliore la fiabilité de communication entre l'élément de réseau dans le réseau du domaine à commutation de circuits et le terminal dans le réseau du domaine à commutation de paquets.
PCT/CN2012/084008 2011-11-02 2012-11-02 Procédé, dispositif et système de mise à jour de position WO2013064102A1 (fr)

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US11070974B2 (en) * 2018-12-19 2021-07-20 Cisco Technology, Inc. Efficient user plane function selection with S10 roaming
CN116762366A (zh) * 2021-02-10 2023-09-15 华为技术有限公司 一种寻呼的方法和通信装置

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