WO2007076729A1 - Procede de transfert intercellulaire pour utilisateur mobile et dispositif et systeme de communication et dispositif reseau a evolution - Google Patents

Procede de transfert intercellulaire pour utilisateur mobile et dispositif et systeme de communication et dispositif reseau a evolution Download PDF

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Publication number
WO2007076729A1
WO2007076729A1 PCT/CN2007/000062 CN2007000062W WO2007076729A1 WO 2007076729 A1 WO2007076729 A1 WO 2007076729A1 CN 2007000062 W CN2007000062 W CN 2007000062W WO 2007076729 A1 WO2007076729 A1 WO 2007076729A1
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WIPO (PCT)
Prior art keywords
user
mobile
mobile user
network system
generation
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PCT/CN2007/000062
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English (en)
Chinese (zh)
Inventor
Weihua Hu
Lan Liu
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Huawei Technologies Co., Ltd.
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Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2007076729A1 publication Critical patent/WO2007076729A1/fr

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Classifications

    • 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
    • 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
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • 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

Definitions

  • the present invention relates to the field of mobile communication technologies, and in particular, to a mobile user switching method and device, and a communication system and an evolved network terminal device. Background technique
  • the Future Evolution Network is a new wireless network that is usually replaced by the LTE/SAE abbreviation.
  • the most important parts of the key technologies involved in the future evolution network include: reduced latency and response time, higher user data rates, increased system capacity and coverage, and lower overall operator costs.
  • the core network of the future evolution network mainly includes a mobile management entity (MME, Mobility Management Entity), a user plane entity (UPE, User Plane Entity), and a user plane error point between different access systems (Inter AS System Anchor, Inter AS
  • MME mobile management entity
  • UPE User Plane Entity
  • Inter AS System Anchor Inter AS System Anchor
  • the anchor is the user plane anchor for the mobility between different access systems, where the MME is the mobility management entity, responsible for the mobility management of the control plane, including user context and mobility state management, assigning the user temporary identity, and security.
  • UPE Universal Mobile Telecommunication Systems
  • SGSN Internal Serving GPRS Support Node
  • SGSN Universal Mobile Telecommunication Systems
  • SGSN Internal Serving GPRS Support Node
  • UPE is a user plane entity, responsible for idle state Downlink data initiates paging, manages and stores IP bearer parameters and intra-network routing information, which corresponds to the data plane part of the current UMSN system SGSN and GGSN
  • InterASSystemAnchor acts as a user plane anchor between different access systems, responsible for different The user plane between the mobility management system, such as a user may be assigned the same IP address.
  • LTE/SAE Long-term evolution/system architecture evolution
  • LTE/SAE Long-Term Evolution/System Architecture
  • the system integrates the network registration and the default IP connection bearer establishment, that is, in the process that the mobile user terminal first attaches to the network, the network allocates an IP and a part of the corresponding bearer resources to the mobile user terminal, thereby implementing the mobile user terminal.
  • IP connection bearer establishment that is, in the process that the mobile user terminal first attaches to the network
  • the network allocates an IP and a part of the corresponding bearer resources to the mobile user terminal, thereby implementing the mobile user terminal.
  • Always online so that when the mobile user terminal needs to conduct data services, the network can provide services more quickly.
  • a mobile user switching method in the prior art includes:
  • step 10 the mobile user terminal (MS, Mobile Subscriber) in the idle state (Idle) selects in different access networks.
  • Step 11 The change of the access system is triggered according to the result of the mobile user terminal access network selection, and the MS sends the temporary identity of the mobile user and the parameter information of the MME/UPE in the 2G/3G system to the future evolved network LTE/SAE.
  • the MME/UPE of the system initiates registration in the future evolved network system LTE/SAE.
  • Step 12 The MME/UPE of the LTE/SAE system derives the address of the MME/UPE of the 2G/3G system according to the received parameter information, and sends the temporary identity of the user to the MME/UPE of the 2G/3G system.
  • Step 13 the MME/UPE of the 2G/3G system sends the user context to the future evolution network.
  • MME/UPE of the LTE/SAE system where the user context contains the user's permanent identity and other information, such as security and user plane IP bearer information.
  • Step 14 Future Evolved Network
  • the MME/UPE of the LTE/SAE system may authenticate the mobile user or the mobile user terminal device.
  • Step 15 The MME/UPE of the LTE/SAE system of the future evolved network addresses the home subscriber server (HSS, Home Subscriber Server) to which the user belongs according to the permanent identity of the user, and registers with the HSS to provide services to the mobile subscriber.
  • HSS Home Subscriber Server
  • Step 16 The HSS to which the mobile user belongs indicates to delete the user context in the MME/UPE of the 2G/3G system.
  • Step 17 The HSS of the mobile subscriber belongs to the ⁇ / ⁇ of the future evolved network system to confirm that the user is successfully registered.
  • Step 18 Future evolved network
  • the MME/UPE of the LTE/SAE system notifies the mobile user terminal that the mobile subscriber is successfully registered and assigned a new temporary identity.
  • Step 19 The MME/UPE of the future evolved network LTE/SAE system initiates an update of the user plane. Routing, updating the user plane route between the UPE of the 2G/3G system and the mobility anchor to itself, after which the mobility anchor routes all data destined for the mobile user terminal to the UPE of the LTE/SAE system of the future evolution network.
  • the activation process of the attach process and the Packet Data Protocol (PDP) context are two separate processes.
  • the terminal After the mobile user terminal is turned on, the terminal first performs a general packet radio service (GPRS) attach procedure, which mainly includes security procedures and location updates. After the attachment is completed, the terminal does not obtain the IP connection bearer at the same time. Only when the terminal initiates a PDP context activation process, the terminal will be provided with an IP address and corresponding configuration parameters. That is to say, in the process of attaching the mobile user terminal to the 2G/3G system, the 2G/3G system does not create a default IP connection bearer for the mobile user, and the mobile user terminal only needs to perform the data service before the mobile user performs the data service.
  • GPRS general packet radio service
  • the PDP activation process is initiated. Therefore, when the mobile user in the idle state switches from the 2G/3G system to the LTE/SAE system in the future evolution network, the user's default IP connection bearer may not be obtained. If the mobile user subsequently performs data service, A process of obtaining a network-assigned IP connection bearer must be performed first. If the user default IP connection bearer is obtained, if the mobile user subsequently performs data service, the user plane route needs to be updated before the service is used, thus extending the future. The business of the evolved network LTE/SAE system reflects the time and reduces the user's physical fitness.
  • the embodiments of the present invention provide a mobile subscriber switching method, a communication system, an evolved network device, and a mobile subscriber switching device, which can reduce the service response time of the LTE/SAE in the future evolution system and improve the user experience.
  • a mobile user switching method provided by an embodiment of the present invention includes: a mobile user terminal initiates network registration with an evolved network system; an evolved network system establishes or updates a default internet protocol connection bearer corresponding to the user; and the evolved network system accepts the mobile user The registration request completes the system switch.
  • a mobile user switching method provided by another embodiment of the present invention includes: a mobile user terminal initiates network registration to a second-generation/third-generation system; a second-generation/third-generation system performs registration update to a home subscription user server to which the mobile user belongs; and updates the mobile user The corresponding default Internet Protocol connection bearer; accepts the registration request of the mobile user to complete the system switching.
  • a communication system provided by an embodiment of the present invention includes: a mobile terminal, an evolved network system, and a second-generation/third-generation network system; the user terminal is configured to initiate network registration to an evolved network system; and the evolved network system is used to establish or update The default internet protocol connection bearer corresponding to the user, and accepting the registration request of the mobile user to switch the mobile user from the second generation/third generation network system to the evolved network system.
  • a communication system provided by another embodiment of the present invention includes: a mobile terminal, an evolved network system, and a second-generation/three-generation network system; the user terminal is configured to initiate network registration to a second-generation/third-generation network system; the second-generation/third-generation The network system is configured to update a default internet protocol connection bearer corresponding to the user, and accept the registration request of the mobile user to switch the mobile user from the evolved network system to the second generation/third generation network system.
  • the evolved network device includes: a management entity and a mobility anchor point; the management entity is configured to establish an internet protocol connection bearer for the mobile user to switch the network, obtain the user identity information, and determine The mobile anchor of the user service and the update of the user plane route; the mobility anchor is used to allocate an internet protocol address to the mobile user and provide an access packet data network interface.
  • the mobile user switching device includes: an identifying unit, a bearer establishing initiating unit, and a bearer update initiating unit; the identifying unit is configured to determine whether the user has an internet protocol connection bearer during a mobile user switching network, If yes, the bearer update initiating unit is notified, if not, the bearer setup initiating unit is notified; the bearer setup initiating unit initiates an internet protocol connection bearer setup request according to the notification of the identifying unit; The notification of the identification unit initiates an internet protocol connection bearer update request.
  • a mobile user includes a process of establishing or updating a default IP connection bearer for a mobile user in a process of switching from a 2G/3G system to a future evolved network LTE/SAE system in an idle state to avoid an idle state. There may be no default IP connection after the mobile user switches from the 2G/3G system to the future evolved network LTE/SAE system.
  • the embodiment of the present invention can ensure that the mobile subscriber registered in the 2G/3G system first has a default IP connection bearer after switching to the LTE/SAE system in the idle state, so that the mobile subscriber When the terminal needs to start the data transmission service, the network can provide a faster response, and the mobile user terminal can transition from the idle state to the data transmission state more quickly.
  • FIG. 1 is a schematic diagram of a processing flow of a mobile user switching from a 2G/3G system to a future evolved network LTE/SAE system in an idle state in the prior art;
  • FIG. 2 is a flowchart of a handover method of a mobile user switching from a 2G/3G system to a future evolved network LTE/SAE system in an idle state according to the first embodiment of the present invention
  • FIG. 3 is a schematic diagram of a processing procedure for a mobile subscriber to switch from a 2G/3G system to a future evolved network LTE/SAE system in an idle state according to the first embodiment of the present invention, and a default ⁇ connection bearer is established by using 3GPP GTP technology;
  • FIG. 4 is a flowchart of a handover method of a mobile user switching from a 2G/3G system to a future evolved network LTE/SAE system in an idle state according to a second embodiment of the present invention
  • FIG. 5 is a flowchart of a handover method of a mobile user switching from a 2G/3G system to a future evolved network LTE/SAE system in an idle state according to a third embodiment of the present invention
  • FIG. 6 is a schematic diagram of a processing procedure for establishing a default IP connection bearer by using a 3GPP GTP technology in a handover mode in which a mobile user switches from a 2G/3G system to a future evolved network LTE/SAE system in an idle state according to a third embodiment of the present invention
  • FIG. 7 is a flowchart of a handover method of a mobile user switching from a 2G/3G system to a future evolved network LTE/SAE system in an idle state according to a fourth embodiment of the present invention
  • FIG. 8 is a schematic flowchart of a handover method of a mobile user switching from a 2G/3G system to a future evolved network LTE/SAE system in an idle state according to a fifth embodiment of the present invention
  • FIG. 9 is a flowchart of a handover method of a mobile user switching from a 2G/3G system to a future evolved network LTE/SAE system in an idle state according to a sixth embodiment of the present invention.
  • FIG. 10 is a flowchart of a handover method of a mobile user switching from a 2G/3G system to a future evolved network LTE/SAE system in an idle state according to a seventh embodiment of the present invention
  • FIG. 11 is a schematic diagram showing a processing flow of an inter-system handover method for a mobile user to switch from a future evolved network LTE/SAE system to a 2G/3G system in an idle state according to an eighth embodiment of the present invention
  • FIG. 12 is a flowchart of a handover method of a mobile user switching from a future evolved network LTE/SAE system to a 2G/3G system in an idle state according to a ninth embodiment of the present invention
  • FIG. 13 is a flowchart of a handover method for a mobile user to switch from a future evolved network LTE/SAE system to a 2G/3G system in an idle state according to a tenth embodiment of the present invention
  • 14 is a schematic structural diagram of a communication system in an embodiment of the present invention
  • 15 is a schematic structural diagram of an evolved network device in an embodiment of the present invention.
  • FIG. 16 is a schematic structural diagram of a mobile user switching device according to an embodiment of the present invention.
  • a process for a mobile user to switch from a 2G/3G system to a future evolved network LTE/SAE system in an idle state includes a process of establishing or updating a default IP connection bearer for a mobile user, where the establishing Or updating the default IP connection bearer process of the mobile user may be performed after the future evolved network LTE/SAE system registers the update with the HSS to which the user belongs, or after the future evolved network LTE/SAE system registers the update with the HSS to which the user belongs.
  • the process of establishing the default IP connection bearer of the mobile user is added during the handover process of the mobile user's access system, it is ensured that the mobile user registered in the 2G/3G system is first switched to the future evolved network LTE/SAE in the idle state. After the system, there is a default IP connection bearer, so that when the mobile user's terminal wants to start the data transmission service, the network can provide a faster response, and the mobile user's terminal can also transition from the idle state to the data transmission more quickly. The status is described in detail below.
  • the MME and the UPE are placed together, but the separation is not excluded.
  • the network location of the mobile anchor does not affect the applicability of the present invention.
  • the mobile anchor and the ⁇ can coexist in the same network node.
  • FIG. 2 is a process flow diagram of a first embodiment of an inter-system handover method for a mobile user to switch from a 2G/3G system to a future evolved network LTE/SAE system in an idle state according to the present invention.
  • the system switching process in this embodiment is to initiate the establishment of the default IP connection bearer of the user after the MME/UPE of the evolved network LTE/SAE system registers with the HSS to which the user belongs to serve the MME/UPE of the mobile user. Including the following steps:
  • Step S101 The mobile user terminal MS that has been registered in the 2G/3G system and is in the Idle state selects an access network system.
  • Step S102 The result of the mobile user terminal MS access network selection triggers a change of the mobile user access system from the 2G/3G system to the future evolved network LTE/SAE system, and the mobile user terminal MS sends the temporary identity identifier and can identify the 2G/
  • the parameter information of the 3G SGSN is given to the MME/UPE of the LTE/SAE system of the future evolution network, and is registered in the new access system.
  • the parameter information required to establish a default IP connection bearer may be carried in the registration request, such as the access point name (APN, Access Ponit Name) corresponding to the default IP connection bearer, and the IP address requested by the user.
  • the MME/UPE of the LTE/SAE system of the future evolved network derives the address of the 2G/3G SGSN according to the parameter information in the received registration request message, and sends the temporary identity of the mobile subscriber to the 2G/3G SGSN. .
  • Step S104 The 2G/3G SGSN locates the user context of the mobile user according to the mobile user temporary identity, and sends the user context of the mobile user to the MME/UPE of the LTE/SAE system of the future evolution network, where the user context includes the The permanent identity and other information of the mobile user, such as security parameters and user plane IP bearer information that has been established.
  • the MME/UPE of the LTE/SAE system of the future evolved network may initiate security authentication, such as authentication, for the mobile terminal or the mobile user according to the configuration of the operator.
  • Step S106 The MME/UPE of the LTE/SAE system of the future evolved network addresses the HSS to which the mobile user belongs according to the permanent identity of the mobile user, and registers with the HSS to which the mobile user belongs to provide services to the mobile user. MME/UPE.
  • Step S107 the HSS to which the mobile user belongs indicates that the 2G/3G SGSN deletes the user context of the mobile user.
  • Step S108 The HSS to which the mobile user belongs confirms that the user registration is successful to the MME/UPE of the LTE/SAE system of the future evolved network, and the subscription data of the user is also sent by the HSS to the MME/UPE of the LTE/SAE system of the future evolved network in the foregoing process. .
  • step S109 since the user does not obtain the default IP connection bearer in the 2G/3G system before the handover, a new default IP connection bearer needs to be established for the mobile user, and the MME/UPE of the future evolved network LTE/SAE system A mobility anchor Inter AS Anchor may be selected, and the specific selection mechanism may extend the APN mechanism of the current 3GPP, which is not limited herein.
  • Step S110 The mobile user requests to establish a default IP connection bearer, and the mobility anchor assigns a default IP address to the mobile user, and then the network establishes a user plane path of the UPE to the mobility anchor of the future evolved network system for the mobile user.
  • the technology used here may be Mobile IP or its variant Proxy Mobie IP, and a method of extending the IP of the current 3GPP GGSN. Future evolution network when continuing current GTP technology or Proxy Mobile IP technology
  • the MME UPE of the LTE/SAE system does not need to interact with the mobile user terminal MS; when adopting a technology such as Mobile IP that requires the participation of the mobile user terminal MS, the MME/UPE of the future evolved network LTE/SAE system needs to be and the mobile user terminal.
  • the two-way dotted arrow between the MME/UPE and the mobile user terminal MS of the future evolved network LTE/SAE system in FIG. 2 identifies that the MME/UPE of the future evolved network LTE/SAE system interacts with the mobile user terminal MS.
  • Step S 111 The MME/UPE of the LTE/SAE system of the future evolved network notifies the evolved access network of the QoS configuration parameters of the IP connection bearer allocated for the mobile user, and the access network may allocate and reserve resources for the newly established IP bearer. .
  • Step S112 the MME/UPE of the LTE/SAE system of the future evolved network notifies the mobile user terminal MS that the mobile user is successfully registered, and notifies the mobile user terminal of the core network to assign a new temporary identity to it; the previous process is a newly established default IP address. The IP address assigned to the connection is also notified to the mobile user terminal.
  • Step S113 If the mobile terminal receives the newly assigned temporary identity, the mobile terminal confirms that the registration is successful to the MME UPE of the LTE/SAE system of the future evolution network.
  • Step S101 to S108 are the same as steps S101 to S108 in the first embodiment;
  • Step S109 is an optional step, if the IP connection bearer is not established. , you need to select the mobility anchor point. If the IP connection bearer is established, you do not need to select the mobility anchor point.
  • Step S110a The MME/UPE of the LTE/SAE system sends an Update PDP Context Request message to the mobility anchor, where the default IP connection bearer established by the GTP technology is updated;
  • Step S110 The mobile anchor responds to the Update PDP Context Response message, and updates the user plane route between the original mobility anchor point and the 2G/3G SGSN to the mobility anchor point and the MME/UPE of the future evolved network LTE/SAE system;
  • the subsequent steps are consistent with the subsequent steps in the first embodiment.
  • the establishment or update of the IP connection bearer is performed before the LTE/SAE system of the future evolved network registers the update with the HSS to which the user belongs. It can be understood that the LTE/SAE system can also be attributed to the user in the future evolved network. After the HSS is registered and updated.
  • FIG. 4 is a process flow diagram of a second embodiment of an inter-system handover method for a mobile user to switch from a 2G/3G system to a future evolved network LTE/SAE system in an idle state according to the present invention.
  • the policy for the operator to assign the default IP address does not depend on the user subscription information.
  • Steps S201 to S205 are the same as steps S101 to S105, and step S205 is also optional.
  • Step S206 The MME/UPE of the LTE/SAE system of the future evolved network needs to select a mobile anchor InterASAnchor, and the specific selection mechanism can extend the current 3GPP APN mechanism, which is not limited and discussed herein.
  • Step S207 The mobile anchor point allocates an IP address to the mobile user, and then the network establishes a user plane path of the UPE to the mobility anchor of the future evolved network system for the mobile user.
  • the technology used here may be Mobile IP or its variant Proxy Mobie IP, and continue the current
  • Step S208 The MME/UPE of the LTE/SAE system of the future evolved network notifies the evolved access network of the QoS configuration parameters of the IP connection bearer allocated for the mobile user, and the access network may allocate and reserve resources for the newly established IP bearer.
  • Step S209 The MME/UPE of the LTE/SAE system of the future evolved network addresses the HSS to which the user belongs according to the permanent identity of the user, and registers with the HSS as the MME/UPE currently serving the mobile user.
  • Step S210 the HSS to which the mobile user belongs indicates that the user context of the mobile user is deleted in the 2G/3G SGSN.
  • Step S211 the HSS to which the mobile user belongs confirms that the user registration is successful to the MME/UPE of the LTE/SAE system of the future evolved network, and the subscription data of the user is also sent by the HSS to the MME/UPE of the LTE/SAE system of the future evolved network in the foregoing process. .
  • Step S212 the MME UPE of the LTE/SAE system of the future evolved network notifies the mobile user terminal that the mobile subscriber is successfully registered, and notifies the mobile user terminal of the core network to allocate a new temporary identity; the foregoing is allocated for the newly established default IP connection.
  • the IP address is also notified to the mobile user terminal.
  • Step S213 If the mobile terminal receives the newly assigned temporary identity, the mobile terminal confirms that the registration is successful to the MME/UPE of the LTE/SAE system of the future evolution network.
  • step S206 can be changed to:
  • InterAS Anchor updates the default IP connection bearer.
  • Step S207 may instead include the following steps:
  • Step A Future Evolution Network MME/UPE of the LTE/SAE system sends an Update PDP.
  • the Context Request message is sent to the wrong point
  • Step B The mobile anchor responds to the Update PDP Context Response message, and updates the user plane route between the original mobile anchor point and the 2G/3G SGSN to the mobility anchor point and the MME/UPE of the future evolved network LTE/SAE system.
  • the DHCP server performs IP address allocation for the mobile user's terminal, and this function can also be implemented on the MME UPE functional entity of the future evolved network LTE/SAE system.
  • FIG. 5 is a process flow diagram of a third embodiment of an inter-system handover method for a mobile user to switch from a 2G/3G system to a future evolved network LTE/SAE system in an idle state according to the present invention.
  • the MME/UPE of the LTE/SAE system of the future evolved network performs IP address allocation on the mobile user's terminal, which specifically includes the following steps:
  • Steps S301 to S308 are the same as steps S101 to S108 in the first embodiment.
  • Step S309 is an optional step. If the IP connection bearer is not established, the mobility anchor point needs to be selected. If an IP connection bearer has been established, there is no need to select a mobility anchor point;
  • steps S310a and S310b are steps in the case of establishing an IP connection bearer, that is, there is no need to select a mobility anchor point:
  • Step S310 the MME/UPE of the LTE/SAE system of the future evolved network requests an IP address from the DHCP server to the user. If the MME/UPE of the evolved network LTE/SAE system has the function of the DHCP server, it does not need to be external. The DHCP server requests itself to assign an IP address to the user.
  • the technology used to allocate IP for the user in this embodiment may be Mobile IP or its variant Proxy Mobie IP, and a method for extending the IP of the current 3GPP GGSN.
  • the MME UPE of the future evolved network LTE/SAE system does not need to interact with the mobile user terminal MS; when adopting a technology such as Mobile IP that requires the participation of the mobile user terminal MS, the future The MME/UPE of the evolved network LTE/SAE system needs to interact with the mobile user terminal MS.
  • the two-way dotted arrow between the MME/UPE and the mobile user terminal MS of the future evolved network LTE/SAE system in FIG. 5 identifies the future evolved network MME/UPE of the LTE/SAE system interacts with the mobile user terminal MS.
  • Step S311 The MME/UPE of the LTE/SAE system of the future evolved network notifies the evolved access network of the QoS configuration parameters of the IP connection bearer allocated for the mobile user, and the access network may allocate and reserve resources for the newly established IP bearer.
  • Step S312 the MME/UPE of the LTE/SAE system of the future evolved network notifies the mobile user terminal that the mobile subscriber of the MS is successfully registered, and notifies the mobile subscriber terminal of the core network to assign a new temporary identity to it; the previous is the newly established default IP connection assignment. The IP address will also be notified to the mobile user terminal.
  • Step S313 If the mobile terminal receives the newly assigned temporary identity, the mobile terminal confirms that the registration is successful to the MME/UPE of the LTE/SAE system of the future evolution network.
  • Step S301 to S309 are the same as steps S101 to S109 in the first embodiment;
  • Step S310a MME/ of the evolved network LTE/SAE system UPE sends Update PDP Context Request message to the mobile anchor;
  • Step S31 Ob The mobile anchor responds to the Update PDP Context Resp onse message, and updates the user plane route between the original mobility anchor point and the 2G/3G SGSN to the mobility anchor point and the MME/UPE of the future evolved network LTE/SAE system. .
  • the default IP connection bearer of the user does not need to refer to the user subscription information, for example, the policy for the operator to assign the default IP address does not depend on the user subscription information, and in addition, it is possible to allocate the IP address for the mobile user in the future.
  • the address is stored in the HSS to which the mobile user belongs, so that the called service is addressed. Therefore, if the IP address can be allocated before the location update, the IP address can be saved to the HSS by using the location update process, that is, after the security authentication check, the network
  • the user can establish a default IP connection bearer, including the following steps:
  • Step S401 to step S406 are the same as steps S101 to S105, and step S205 is also optional.
  • Step S407 The MME/UPE of the LTE/SAE system of the future evolved network requests an IP address for the user to a DHCP server. If the MME/UPE of the evolved network LTE/SAE system has the function of the DHCP server, it does not need to be external.
  • the DHCP server requests to assign an IP address to the user, and the network establishes a user plane bearer for the default IP.
  • the technology used here may be Mobile IP or its variant Proxy Mobie IP, and the way to extend the IP of the current 3GPP GGSN. For details, refer to the foregoing description, and details are not described herein again.
  • Steps S408 to S413 are consistent with steps S208 to S213.
  • the MME/UPE of the LTE/SAE system of the future evolved network cannot successfully successfully obtain the SGSN of the 2G/3G system previously registered by the user according to the parameter information in the received registration request message.
  • Get the user's context for example: Due to DNS data configuration error, DNS is busy, the SGSN address of the 2G/3G system cannot be obtained due to DNS path failure, flashing, etc.; and the SGSN of the 2G/3G system is not responding or the 2G/3G system is The SGSN also cannot query the user context of the mobile user, and the return request fails until the requesting user context procedure of the SGSN of the 2G/3G system fails.
  • the MME/UPE of the evolved network system may also initiate an identity identification request to the mobile user terminal, and the mobile user terminal responds to return the permanent identity of the mobile user, specifically, the MME of the evolved network system.
  • UPE can send body directly to mobile users The identification request, the mobile user returns the permanent identity of the mobile user to the evolved network system; or the MME/UPE of the evolved network system first sends the mobile user identity temporary identity to the SGSN of the 2G/3G system, if the 2G/3G system SGSN is based on the mobile
  • the user identity temporary identifier indicates that the user context of the mobile user fails or the MME/UPE of the evolved network system does not receive the response of the 2G/3G system SGSN, and the MME/UPE of the evolved network system sends an identity identification request to the mobile user, and the mobile user sends The evolved network system returns the permanent identity of the mobile user.
  • FIG. 8 is a schematic diagram of a process flow of a fifth embodiment of an inter-system handover method for a mobile user to switch from a 2G/3G system to a future evolved network LTE/SAE system in an idle state according to the present invention.
  • the specific process is as follows. ⁇
  • Step S501 The mobile user terminal MS that has been registered in the 2G/3G system and is in the Idle state selects an access network system.
  • Step S502 The result of the mobile user terminal MS access network selection triggers a change of the mobile user access system from the 2G/3G system to the future evolved network LTE/SAE system, and the mobile user terminal MS sends the temporary identity identifier and can identify the 2G/
  • the parameter information of the 3G SGSN is given to the MME/UPE of the LTE/SAE system of the future evolution network, and is registered in the new access system. If the mobile user terminal MS has not obtained the default IP connection bearer in the 2G/3G system, the mobile user terminal MS may carry the parameter information required for establishing the default IP connection bearer, such as the default IP connection bearer, in the registration request.
  • APN Access Point Name
  • Step S503 The MME/UPE of the LTE/SAE system of the future evolution network cannot derive the address of the 2G/3G SGSN for various reasons, so an identity identification request is initiated to the mobile terminal.
  • Step S504 The mobile terminal returns a permanent identity of the mobile user in response to the request of the future evolved network.
  • Step S506 to step S513 are consistent with steps S106 to S113.
  • step S509 can be changed to:
  • Future Evolution Network MME/UPE of LTE/SAE system needs to select a mobility anchor
  • Step S510 can be changed to include the steps:
  • Step A The LTE/SAE system MME/UPE sends an Update PDP Context Request message to the mobility anchor point;
  • Step B The mobile anchor responds to the Update PDP Context Response message, and updates the user plane route between the original mobile anchor point and the 2G/3G SGSN to the mobility anchor point and the MME/UPE of the future evolved network LTE/SAE system.
  • step S509 to S511 in FIG. 8 may be advanced to step S505.
  • the network establishes a default IP connection for the user. Considering that it is possible in the future to store the IP address assigned to the user in the HSS for the called service to be addressed, if the IP address can be allocated before the location update, it is possible to consider saving the IP address to the HSS using the location update procedure.
  • the foregoing embodiment describes that the IP address allocation is performed by the Inter AS Anchor itself or by the DHCP server to the mobile user's terminal, and this function can also be implemented on the MME/UPE functional entity of the future evolved network LTE/SAE system.
  • the MME/UPE of the evolved network system directly identifies the mobile user terminal, and obtains the permanent identity of the mobile user.
  • the identity is directly identified to the mobile user terminal, and the permanent identity of the mobile user is obtained.
  • the method of the identification may also generate four application scenarios according to the foregoing allocation and the timing of establishing an IP connection, a method for allocating an IP, and the like, which are not specifically described herein.
  • FIG. 9 is a process flow diagram of a sixth embodiment of the inter-system handover method for a mobile user to switch from a 2G/3G system to a future evolved network LTE/SAE system in the idle state of the present invention.
  • the specific process is as follows: Referring to FIG. 8 together, in this embodiment, the step S503 in the previous embodiment is changed to:
  • Step S603a The evolved network LTE/SAE system MME/UPE derives the address of the 2G/3G SGSN according to the parameter information in the received registration request message, and sends the mobile user temporary identity to the 2G/3G SGSN;
  • Step S603b The MME/UPE of the LTE/SAE system of the future evolved network does not receive the response of the 2G/3G SGSN, or the 2G/3G SGSN responds to obtain the mobile user for various reasons. The context failed. That is, the MME/UPE of the Future Evolved Network LTE/SAE system does not successfully obtain the context of the user from the 2G/3G SGSN.
  • Step S604a The MME/UPE of the LTE/SAE system of the future evolved network sends an identity identification request to the mobile terminal;
  • Step S604b The mobile terminal returns a permanent identity of the mobile user in response to the request of the future evolved network.
  • step S609 can be changed to:
  • InterAS Anchor updates the default IP connection bearer.
  • Step S610 can be changed to include steps:
  • Step A The LTE/SAE system MME/UPE sends an Update PDP Context Request message to the mobility anchor point;
  • Step B The mobile anchor responds to the Update PDP Context Response message, and updates the user plane route between the original mobile anchor point and the 2G/3G SGSN to the mobility anchor point and the MME/UPE of the future evolved network LTE/SAE system.
  • step s609 to step 611 in FIG. 9 may be placed in advance.
  • the network establishes a default IP connection for the user. Considering that it is possible in the future to store the IP address assigned to the user in the HSS for the called service to be addressed, if the IP address can be allocated before the location update, it is possible to consider saving the IP address to the HSS using the location update procedure.
  • the foregoing embodiment describes that the IP address allocation is performed by the Inter AS Anchor itself or by the DHCP server to the mobile user's terminal, and this function can also be implemented on the MME/UPE functional entity of the future evolved network LTE/SAE system.
  • the MME/UPE of the evolved network system identifies the mobile user terminal after obtaining the SGSN failure of the 2G/3G system, and obtains the permanent identity of the mobile user. Identification, the description, after the SGSN query to the 2G/3G system fails, the mobile user terminal is identified, and the method for obtaining the permanent identity of the mobile user may also be based on the foregoing allocation and establishment of the IP connection timing and allocation. The combination of the IP method and the like generates four application scenarios, which are not described in detail herein.
  • the SGSN of the 2G/3G system and the MME of the evolved network system may be integrated in the same entity.
  • the MME/UPE of the evolved network system It is not necessary to go to the SGSN of the 2G/3G system to obtain the user context of the mobile user, because the function of the SGSN of the 2G/3G system that saves the user context of the mobile user is also in the same entity, so it can directly locate according to the temporary identity of the user.
  • the evolved network system after the mobile station of the mobile user initiates network registration with the evolved network system; the evolved network system establishes or updates the default corresponding to the user.
  • IP connection bearer Finally, the evolved network system accepts the registration request of the mobile user to complete the system switch, which is described in detail below.
  • FIG. 10 the figure is a process flow diagram of a seventh embodiment of an inter-system handover method for a mobile user to switch from a 2G/3G system to a future evolved network LTE/SAE system in an idle state according to the present invention.
  • the specific process is as follows:
  • Step S701 The mobile user terminal MS that has been registered in the 2G/3G system and is in the idle Idle state selects an access network system.
  • Step S702 The result of the mobile user terminal MS access network selection triggers a change of the mobile user access system from the 2G/3G system to the future evolved network LTE/SAE system, and the mobile user terminal MS sends the temporary identity identifier and can identify the 2G/
  • the parameter information of the 3G SGSN is given to the MME/UPE of the LTE/SAE system of the future evolution network, and is registered in the new access system. If the mobile user terminal MS has not obtained the default IP connection bearer in the 2G/3G system, the mobile user terminal MS may carry the parameter information required for establishing the default IP connection bearer, such as the default IP connection bearer, in the registration request.
  • the corresponding APN the IP address requested by the user, and so on.
  • the MME/UPE of the LTE/SAE system of the future evolved network may initiate security authentication, such as authentication, for the mobile terminal or the mobile user according to the configuration of the operator.
  • Step S704 if the user does not obtain the default IP connection bearer in the 2G/3G system before the handover, and needs to establish a default IP connection bearer for the mobile subscriber, the future evolution network
  • the MME/UPE of the LTE/SAE system can select a mobility anchor InterASAnchor.
  • the specific selection mechanism can extend the APN mechanism of the current 3GPP, which is not limited and discussed herein.
  • Step S705 establishing or updating a default IP connection corresponding to the mobile user.
  • the MME/UPE of the evolved network system may be based on the subscription information, the system configuration policy, and the mobile user's subscription information of the mobile user. Requesting or selecting a mobility anchor InterASAnchor according to the system configuration policy and the mobile user's request, then assigning the mobile user an IP address by the selected mobility anchor InterASAnchor, and finally establishing an UPE of the evolved network system for the mobile user.
  • the MME/UPE of the evolved network system directly assigns an IP address to the mobile user according to the subscription information of the mobile user, the system configuration policy, and the request of the mobile user, or according to the system configuration policy and the request of the mobile user, and then establishes the IP address for the mobile user.
  • the MME/UPE of the LTE/SAE system of the evolving network may request an IP address for the user from a DHCP server, if the MME/UPE of the LTE/SAE system in the future evolves network
  • the function of having a DHCP server does not need to request an external DHCP server and assigns an IP address to the user.
  • Step S706 The MME/UPE of the LTE/SAE system of the future evolved network notifies the evolved access network of the QoS configuration parameters of the IP connection bearer allocated for the mobile user, and the access network may allocate and reserve resources for the newly established IP bearer.
  • Step S707 The MME/UPE of the LTE/SAE system of the future evolved network notifies the mobile user terminal that the mobile subscriber is successfully registered, and notifies the mobile subscriber terminal of the core network to allocate a new temporary identity; previously allocated for the newly established default IP connection. The IP address is also notified to the mobile user terminal.
  • Step S708 If the mobile terminal receives the newly assigned temporary identity, the mobile terminal confirms that the registration is successful to the MME/UPE of the future evolved network LTE/SAE system.
  • the present invention also describes a process of changing from LTE/SAE to 2G/3G system in the Idle state, the difference being The SGSN of the 2G/3G system and the MME/UPE role of the SAE are reversed, and there is no possible process for newly establishing a default IP bearer for the user.
  • the specific process of changing from LTE/SAE to 2G/3G system in the Idle state includes the following steps:
  • Step S801 The MS that is registered in the LTE/SAE system and in the Idle state selects an access network system.
  • Step S802 the result of the access network selection triggers the change of the access system from LTE/SAE to 2G/3G, and the MS sends the temporary identity identifier and the parameter information that can identify the MME/UPE to the SGSN of the 2G/3G system, in the new Registered in the access system.
  • Step S803 The SGSN of the 2G/3G system derives the address of the MME/UPE according to the parameter in the received registration request message, and sends the temporary identifier of the user to the MME/UPE.
  • Step S804 the MME/UPE locates the context of the user, and sends the context of the user to the SGSN of the 2G/3G system, where the user context includes the permanent identity of the user and other information, such as security parameters and the established user plane IP bearer. Information, etc.
  • Step S805 The SGSN of the 2G/3G system is configured by the operator, and may initiate a security process, such as authentication, for the mobile terminal or the mobile user.
  • a security process such as authentication
  • Step S806 The SGSN of the 2G/3G system addresses the HSS to which the user belongs according to the permanent identity of the user, and registers with the HSS the SGSN of the 2G/3G system that currently provides services to the mobile user.
  • Step S807 the HSS instructs the MME/UPE to delete the user context.
  • Step S808 the HSS confirms that the user registration is successful to the SGSN of the 2G/3G system, and sends the subscription data of the user to the SGSN of the 2G/3G system.
  • Step S809 the update of the user plane route is completed, that is, the user plane route between the original mobility anchor point and the MME/UPE is updated between the mobility anchor point and the SGSN of the 2G/3G system.
  • Step S810 The SGSN of the 2G/3G system notifies the mobile user terminal that the mobile user registration is successful, and notifies the mobile user terminal core network to assign a new temporary identity to it.
  • Step S811 if the mobile user terminal accepts the newly assigned temporary identity, the mobile terminal confirms that the registration is successful.
  • Step S901 The mobile user terminal MS that has been registered in the LTE/SAE system and is in the Idle state selects an access network system.
  • Step S902 the result of the access network selection triggers the change of the access system from LTE/SAE to 2G/3G, and the mobile user terminal MS sends the temporary identity identifier and the parameter information that can identify the MME/UPE to the SGSN of the 2G/3G system. Register within the new access system.
  • Step S903 for various reasons, the SGSN of the 2G/3G system cannot derive the address of the MME/UPE of the LTE/SAE system of the future evolved network, and the SGSN of the 2G/3G system sends an identity identification request to the mobile terminal.
  • Step S904 The mobile terminal returns a permanent identity of the mobile user in response to the request of the SGSN of the 2G/3G system.
  • Step S905 The SGSN of the 2G/3G system may initiate a security process, such as signing, for the mobile terminal or the mobile user according to the configuration of the operator.
  • a security process such as signing
  • Steps S906 to S911 are consistent with steps S806 to S811 in the previous embodiment.
  • the specific process of changing from LTE/SAE to 2G/3G system in the Idle state includes the following steps:
  • Step S1001 The mobile user terminal MS that has been registered in the LTE/SAE system and is in the Idle state selects an access network system.
  • Step S1002 The result of the access network selection triggers the change of the access system from LTE/SAE to 2G/3G, and the mobile user terminal MS sends the temporary identity identifier and the parameter information that can identify the MME/UPE to the SGSN of the 2G/3G system. Register within the new access system.
  • step S1003a the SGSN of the 2G/3G system derives the address of the MME UPE of the LTE/SAE system of the future evolved network according to the parameter information in the received registration request message, and sends the temporary identity of the mobile user to the future evolved network LTE/ MME/UPE of the SAE system.
  • Step S1003b for various reasons, the SGSN of the 2G/3G system does not receive the MME/UPE response of the LTE/SAE system of the future evolved network, or the MME/UPE response of the LTE/SAE system of the future evolved network indicates the context of the mobile user. failure. That is, the SGSN of the 2G/3G system does not successfully obtain the context of the user from the LTE/ ⁇ of the LTE/SAE system of the future evolved network.
  • Step S1004a the MME/UPE of the SGSN of the 2G/3G system initiates to the mobile user terminal. Identification request.
  • Step S1004b The mobile terminal returns the mobile user's permanent identity in response to the request of the SGSN of the 2G/3G system.
  • Step S1005 The 2G/3G SGSN may initiate a security process, such as authentication, for the mobile terminal or the mobile user according to the configuration of the operator.
  • a security process such as authentication
  • Steps S1006 to S1011 are consistent with steps S906 to S911 in the previous embodiment.
  • the system in the communication system of the embodiment of the present invention includes: a mobile terminal 1401, an evolved network system 1402, a second-generation/third-generation network system 1403, an evolved radio access network 1404, a mobile switching device 1405, and a home subscription subscriber server 1406. .
  • the system is applicable to the following two scenarios:
  • the user terminal 1401 is configured to initiate a network registration to the evolved network system 1402.
  • the evolved network system 1402 is configured to establish or update a default internet protocol connection bearer corresponding to the user, and accept the registration request of the mobile user.
  • the mobile user switches from the second generation/third generation network system 1403 to the evolved network system 1402;
  • the radio access network 1404 is configured to receive a quality of service configuration parameter of an internet protocol connection bearer allocated by the evolved network system 1402 for the mobile user, and allocate and reserve resources for the newly established internet protocol bearer;
  • the mobile switching device 1405 is configured to establish or update a default Internet Protocol connection bearer corresponding to the user and update the user route under the control of the evolved network system 1402.
  • the home subscriber network 1406 is used for registration updates with the evolved network system 1402.
  • the user terminal 1401 is configured to initiate a network registration to the second generation/third generation network system 1403.
  • the second generation/third generation network system 1403 is configured to update a default internet protocol connection bearer corresponding to the user, and accept the registration of the mobile user.
  • the mobile subscriber is requested to switch from the evolved network system 1402 to the second generation/third generation network system 1403.
  • the mobile switching device 1405 is configured to update a default Internet Protocol connection bearer corresponding to the user and update the user route under the control of the second generation/third generation network system 1403;
  • the home subscription subscriber server 1406 is configured to perform registration updates with the second generation/third generation network system 1403.
  • the evolved network device in the embodiment of the present invention includes:
  • the management entity 1501 establishes an Internet Protocol connection bearer for the mobile user to switch the network, acquires the user identity information, determines the mobility anchor 1405 serving the user, and updates the user plane route;
  • the mobility anchor 1405 is used to update the user plane route.
  • the mobile user switching device in the embodiment of the present invention includes:
  • the identification unit 1601, the bearer setup initiating unit 1602 and the bearer update initiating unit 1603; the identifying unit 1601 is configured to determine, in the process of the mobile subscriber switching network, whether the user has an internet protocol connection bearer, and if yes, notify the bearer update initiating unit 1603, if not, notify the bearer establishment initiation unit 1602;
  • the bearer establishment initiating unit 1602 initiates an internet protocol connection according to the notification of the identification unit 1601.
  • the bearer update initiating unit 1603 initiates an internet protocol connection bearer update request according to the notification of the identifying unit 1601.

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Abstract

L'invention concerne un procédé de transfert intercellulaire pour utilisateur mobile, un dispositif et un système de communication et un dispositif réseau à évolution. Selon cette invention, lorsque l'utilisateur mobile à l'état de repos commute vers le système réseau LTE/SAE depuis le système 2G/3G, le procédé consiste à établir ou mettre à jour le support de connexion IP par défaut correspondant pour l'utilisateur mobile. Ce procédé permet d'effectuer le processus qui établit et met à jour le support de connexion IP par défaut avant que le système réseau LTE/SAE s'aligne sur le système d'abonnés domestiques utilisateurs, ou après son enregistrement pour mise à jour. Du fait de l'ajout au processus pour établir le support de connexion IP par défaut, ce système permet de s'assurer que l'enregistrement précédent de l'utilisateur mobile à l'état de repos dans 2G/3G possède le support de connexion IP par défaut après que l'utilisateur mobile soit passé au système réseau LTE/SAE. En conséquence, lorsque le terminal de l'utilisateur mobile déclenche le service de transmission de données, le réseau peut fournir plus rapidement la réponse, le terminal de l'utilisateur mobile peut également passer plus rapidement vers l'état de transmission de données depuis l'état de repos.
PCT/CN2007/000062 2006-01-06 2007-01-08 Procede de transfert intercellulaire pour utilisateur mobile et dispositif et systeme de communication et dispositif reseau a evolution WO2007076729A1 (fr)

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