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WO2011011940A1 - Procédé et système pour établir une connexion de réseau mobile - Google Patents

Procédé et système pour établir une connexion de réseau mobile Download PDF

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Publication number
WO2011011940A1
WO2011011940A1 PCT/CN2009/075241 CN2009075241W WO2011011940A1 WO 2011011940 A1 WO2011011940 A1 WO 2011011940A1 CN 2009075241 W CN2009075241 W CN 2009075241W WO 2011011940 A1 WO2011011940 A1 WO 2011011940A1
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WO
WIPO (PCT)
Prior art keywords
initial
target
connection
address
apn
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2009/075241
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English (en)
Chinese (zh)
Inventor
朱春晖
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZTE Corp
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ZTE Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZTE Corp filed Critical ZTE Corp
Publication of WO2011011940A1 publication Critical patent/WO2011011940A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup

Definitions

  • the present invention relates to mobile communication technologies, and in particular, to a method and system for establishing a mobile network connection.
  • the Mobile IP (Internet Protocol) protocol is a network layer solution that provides mobility over the Internet (Internet), enabling nodes to switch communications without disrupting ongoing communications.
  • Mobile IP provides an IP routing mechanism that allows mobile nodes to be accessed through their home address when accessing a foreign link.
  • MN Mobile Node
  • UE User Equipment
  • HA Home Agent
  • MN the topology anchor of the home network prefix of MN, and manages the binding state of the MN.
  • Ho A A permanent IP address assigned to a mobile node that belongs to the home link of the mobile node.
  • the standard IP routing mechanism sends packets addressed to the mobile node's home address to its home link.
  • Care of Address Refers to the IP address obtained when the mobile node accesses the foreign link.
  • the subnet prefix of this IP address is the foreign subnet prefix.
  • Binding The association between the MN's IPv6 home network prefix and/or the IPv4 home address and the CoA.
  • the 3rd Generation Partnership Project (3rd The Generation Partnership Project (3GPP) standardization working group is currently working on the next generation evolution of the core network system, the Evolved Packet Core (EPC), which aims to provide users with higher transmission rates and shorter Transmission delay.
  • the EPC system supports access to an evolved Evolved Universal Terrestrial Radio Access Network (E-UTRAN) and access to non-3GPP access networks, such as Worldwide Interoperability for Microwave Access (World Interoperability for Microwave Access, WiMAX) access network.
  • E-UTRAN evolved Evolved Universal Terrestrial Radio Access Network
  • WiMAX Worldwide Interoperability for Microwave Access
  • FIG. 1 is a system architecture diagram of an Evolved Packet System (EPS).
  • EPS Evolved Packet System
  • S-GW Serving Gateway
  • P-GW Packet Data Network Gate
  • HSS Home Subscriber Server
  • AAA Server Authorization The accounting server
  • ePDG evolved packet data gateway
  • Trusted Non 3GPP Access Network There is a trust relationship between the 3GPP network and the non-3GPP access system, and the non-3GPP access system can directly access the P-GW; the untrusted non-3GPP access network (Untrusted Non 3GPP Access): There is no trust relationship between the 3GPP network and the non-3GPP access system.
  • the non-3GPP access system must first access the evolved packet data gateway (ePDG) of the 3GPP network, and then access the P-GW. . At this time, a secure tunnel is established between the UE and the ePDG to ensure secure transmission of data between the UE and the 3GPP network.
  • ePDG evolved packet data gateway
  • the dual stack mobile IP protocol version 6 (Dual Stack ⁇ , DS-MIPv6) is used to keep the user IP address unchanged to maintain user service continuity.
  • the initial P-GW has the function of HA.
  • a trusted non-3GPP access network or ePDG will assign a Care-of Address (CoA) to the UE.
  • the UE uses the mobility service, the UE initiates an Internet Key Exchange Version 2 (IKEv2) to establish a security association with the HA, and the HA allocates an IP address (HoA) to the UE and sends the address to the UE.
  • IKEv2 Internet Key Exchange Version 2
  • HoA IP address
  • FIG. 2 is a schematic flowchart of a method for establishing a mobile network connection in the prior art. As shown in FIG. 2, in the prior art, establishing a mobile network connection specifically includes the following steps:
  • Step 201 The UE accesses the target P-GW through the E-UTRAN and the serving gateway.
  • the HSS stores an IP address or identity for the service access P-GW currently used by the UE.
  • the service is identified by an Access Point name (APN), and the P-GW is called a target P-GW.
  • APN Access Point name
  • Step 202 The UE switches to the non-3GPP access network to establish a connection with the trusted non-3GPP network or ePDG.
  • Step 203 The UE interacts with the initial P-GW to perform home agent conversion.
  • the UE starts the DSMIPv6 protocol stack and starts to find the address of the HA.
  • the UE obtains the HA address, that is, the initial P-GW address may be queried by using a Domain Name System (DNS), specifically: The home agent-access point name (HA-APN) is given to the DNS server (DNS Server); the DNS server searches for the IP address of the P-GW corresponding to the HA-APN saved by itself, and finds the IP addresses of some P-GWs.
  • DNS Domain Name System
  • the UE obtains the address list of the P-GW returned by the DNS server, and selects an address from which the P-GW corresponding to the address is not the target P-GW, and is the initial P-GW. Afterwards, the UE establishes a security association with the initial P-GW. In the process of establishing the security association, the initial P-GW obtains the address of the target P-GW from the HSS, sends it to the UE, and instructs the UE to redirect to the target. P-GW, which indicates the conversion of the home agent.
  • Step 204 The UE establishes a DSMIPv6 security association and a binding relationship with the obtained target P-GW, completes the handover, and implements service continuity.
  • the user data can be directly sent to the UE through the target P-GW.
  • the UE cannot directly establish a DSMIPv6 binding with the P-GW connected before the handover, that is, the target P-GW, and needs a process of converting the home agent from the initial P-GW to the target P-GW. This conversion process wastes network resources and affects the speed and user experience of the UE accessing the network.
  • the main purpose of the present invention is to provide a method and system for establishing a mobile network connection, which can save network resources, improve the speed at which the UE accesses the network, and improve the user experience.
  • the present invention provides a method for establishing a mobile network connection, the method comprising:
  • the user equipment UE initiates establishment of a security association with the initial P-GW;
  • the initial P-GW establishes a connection with the target P-GW and returns an authentication response to the UE;
  • Binding updates are performed between the UE and the initial P-GW.
  • the method further includes:
  • the UE accesses the target P-GW through the evolved universal terrestrial radio access network E-UTRAN and the serving gateway;
  • the UE switches to the non-3rd Generation Partnership Project 3GPP Access Network to establish a connection with the trusted non-3GPP or evolved packet data gateway ePDG.
  • the method further includes:
  • the UE sends the access point name APN to the initial P-GW;
  • the initial P-GW acquires the IP address of the target P-GW from the home subscriber server HSS.
  • the step of establishing the connection between the initial P-GW and the target P-GW includes:
  • the initial P-GW sends a connection establishment request to the target P-GW through an interface with the target P-GW; and the target P-GW returns a connection establishment response to the initial P-GW through an interface with the initial P-GW. , among them,
  • connection establishment request carries at least a user identity, an APN, and a downlink generic routing encapsulation key GRE KEY.
  • the method further includes:
  • the target P-GW searches for the PDN connection context of the packet data network corresponding to the APN according to the user identity and the APN carried in the connection request, and obtains the user IP address saved therein, and Newly described PDN connection context;
  • the target P-GW saves the received downlink GRE KEY and the IP address of the initial P-GW, and allocates the uplink GRE KEY, and then performs the subsequent steps, that is, the target P-GW returns a connection establishment response to the initial P-GW. among them,
  • the setup connection response carries at least an uplink GRE KEY, a user identity, an APN, and a user IP address.
  • the method further includes:
  • the target P-GW forwards the downlink user data to the initial P-GW;
  • the initial P-GW sends the downlink user data to the UE to implement service continuity.
  • the present invention also provides a mobile network connection establishment system, including: a user equipment UE, an initial packet data network gateway P-GW, and a target P-GW, where
  • the UE is configured to: initiate establishment of a security association with the initial P-GW; and perform binding update with the initial P-GW after receiving the authentication response from the initial P-GW;
  • the initial P-GW is configured to: after the UE initiates the establishment of the security association, establish a connection with the target P-GW, and return an authentication response to the UE;
  • the target P-GW is configured to establish a connection with the initial P-GW after the UE initiates the establishment of the security association.
  • the UE is further configured to: after initiating establishment of the security association with the initial P-GW, sending the access point name APN to the initial P-GW;
  • the initial P-GW is also set to acquire the IP address of the target P-GW.
  • the initial P-GW is further configured to: send, by using an interface with the target P-GW, a connection establishment request to the target P-GW, where the connection establishment request carries at least a user identity, APN and downlink general routing encapsulation key GRE KEY;
  • the target P-GW is further configured to: return a connection establishment response to the initial P-GW by using an interface with the initial P-GW, where the connection establishment response carries at least an uplink GRE KEY, The user identity, the APN, and the user IP address.
  • the target P-GW is further configured to: search a PDN connection context of the packet data network corresponding to the APN according to the user identity and the APN carried in the connection request, obtain a user IP address saved therein, and update the PDN connection context; saves the downlink GRE KEY carried in the received connection establishment request and the IP address of the initial P-GW, and allocates the uplink GRE KEY.
  • target P-GW is further configured to: receive downlink user data sent by the external PDN, and forward the downlink user data to the initial P-GW;
  • the initial P-GW is further configured to: send downlink user data from the target P-GW to the UE.
  • the method and system for establishing a mobile network connection of the present invention increases the interface PI between the initial P-GW and the target P-GW, and the UE accesses the target P-GW through the E-UTRAN and the serving gateway, and establishes non-3GPP with trust or After the connection between the ePDGs, the establishment of the security association with the initial P-GW is initiated by the UE, thereby establishing a connection between the initial P-GW and the target P-GW, and the downlink user data sent by the external PDN is continuously sent to The target P-GW forwards the data to the initial P-GW, and then sends the data to the UE by the initial P-GW to implement service continuity.
  • the UE can establish communication with the target P-GW, which saves network resources and can improve the speed and user experience of the UE accessing the network.
  • FIG. 1 is a system architecture diagram of EPS
  • FIG. 2 is a schematic flowchart of a method for establishing a mobile network connection in the prior art
  • FIG. 3 is a schematic structural diagram of a network connection established by the present invention.
  • FIG. 4 is a schematic flowchart of a method for establishing a mobile network connection according to the present invention.
  • FIG. 5 is a schematic structural diagram of a system for establishing a mobile network connection according to the present invention.
  • the basic idea of the present invention is: to increase the interface between the initial P-GW and the target P-GW, the UE accesses the target P-GW through the E-UTRAN and the serving gateway, and establishes non-3GPP with trust or After the connection between the ePDGs, the UE initiates the establishment of a security association with the initial P-GW, thereby establishing a connection between the initial P-GW and the target P-GW, and the downlink user data sent by the external PDN continues to be sent to The target P-GW forwards the data to the initial P-GW, and then sends the data to the UE by the initial P-GW to implement service continuity.
  • FIG. 3 is a schematic structural diagram of a network connection established by the present invention.
  • the architecture of the network connection established by the present invention is compared with that of FIG. 1 as follows: Adding an initial P-GW to a target P-GW Interface, named Pl.
  • the functions of the interface include, but are not limited to: establishing a user plane connection between the initial P-GW and the target P-GW through signaling interaction, such as a Generic Routing Encapsulation (GRE) tunnel, which has both user plane and signaling plane functions. .
  • GRE Generic Routing Encapsulation
  • FIG. 4 is a schematic flowchart of a method for establishing a mobile network connection according to the present invention. As shown in FIG. 4, the method for establishing a mobile network connection according to the present invention specifically includes the following steps:
  • Step 401 The UE accesses the target P-GW through the E-UTRAN and the serving gateway.
  • Step 402 The UE switches to the non-3GPP access network to establish a connection with the trusted non-3GPP or ePDG.
  • Step 403 The UE initiates establishment of a security association with the initial P-GW.
  • the UE starts the DSMIPv6 protocol stack, and starts to query the address of the HA, that is, the UE sends a query containing the HA-APN to the DNS server; after receiving the query, the DNS server searches for the HA-APN saved by itself.
  • the IP address of the corresponding P-GW is found, and some IP addresses of the P-GW are found, and are returned to the UE in the form of a list; after the UE obtains the address list of the P-GW returned by the DNS server, an address is selected from the P-GW.
  • the P-GW corresponding to the address is not the target P-GW, but the initial P-GW, and then initiates the establishment of the security association with the selected initial P-GW.
  • the UE needs to send an APN to the initial P-GW, and the initial P-GW obtains the address of the target P-GW from the HSS.
  • Step 404 The initial P-GW sends a connection establishment request to the target P-GW through the P1 interface.
  • the connection establishment request includes a user identity and an APN, and a Generic Routing Encapsulation KEY (GRE KEY), wherein the user identity is generally a Network Access ID (NAI) or an international mobile subscriber identity. code (international mobile subscriber identity, IMSI).
  • NAI Network Access ID
  • IMSI international mobile subscriber identity
  • Step 405 After receiving the connection establishment request, the target P-GW returns a connection establishment response to the initial P-GW through the interface P1 with the initial P-GW.
  • the target P-GW searches for the PDN connection context corresponding to the APN according to the user identity and the APN carried in the connection establishment request, obtains the user IP address saved therein, updates the PDN connection context, and saves the received downlink GRE.
  • the IP address of the KEY and the initial P-GW, and the uplink GRE KEY are allocated, and then the connection establishment response is sent to the initial P-GW, where the connection establishment response message includes: an uplink GRE KEY, a user identity and an APN, and a user IP address.
  • Step 406 The initial P-GW sends an authentication response, that is, an authentication completion message to the UE, to complete establishment of the security association.
  • the authentication completion message includes the user IP address obtained from the target P-GW in step 405.
  • Step 407 Perform binding update between the UE and the initial P-GW.
  • the UE sends a binding update to the initial P-GW, and the initial P-GW replies with the binding acknowledgement to the UE, completing the establishment of the DSMIPv6 tunnel between the initial P-GW and the UE.
  • the downlink user data sent by the external PDN is sent to the target P-GW, and the target P-GW forwards the data to the initial P-GW through the P1 interface, and the initial P-GW sends the data to the initial P-GW through the S2c interface.
  • UE achieving business continuity.
  • the system for establishing a mobile network connection of the present invention includes: a UE 51, an initial P-GW 52, and a target P-GW 53, where
  • the UE 51 is configured to initiate establishment of a security association with the initial P-GW 52; and after receiving the authentication response from the initial P-GW 52, perform binding update with the initial P-GW 52;
  • the initial P-GW 52 is configured to establish a connection with the target P-GW 53 after the UE 51 initiates the establishment of the security association, and return an authentication response to the UE 51.
  • the target P-GW 53 is configured to establish a connection with the initial P-GW 52 after the UE 51 initiates the establishment of the security association.
  • the UE 51 is further configured to send an APN to the initial P-GW 52 after initiating establishment of the security association with the initial P-GW 52;
  • the initial P-GW 52 is also used to obtain the address of the target P-GW 53.
  • the initial P-GW 52 is further configured to send a connection establishment request to the target P-GW 53 through an interface with the target P-GW 53;
  • the target P-GW 53 is also used to return a connection establishment response to the initial P-GW 52 through an interface with the initial P-GW 52.
  • the target P-GW 53 is further configured to search for a PDN connection context corresponding to the APN according to the user identity and the APN carried in the connection establishment request, obtain the user IP address saved therein, and update the PDN connection context; The downstream GRE KEY and the IP address of the initial P-GW, and the allocation of the upstream GRE KEY.
  • the target P-GW 53 is further configured to receive downlink user data sent by the external PDN, and forward the data to the initial P-GW 52;
  • the initial P-GW 52 is also used to send the data from the target P-GW 53 to the UE 51.
  • the above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.
  • the method and system for establishing a mobile network connection of the present invention increases the interface PI between the initial P-GW and the target P-GW, and the UE accesses the target P-GW through the E-UTRAN and the serving gateway, and establishes non-3GPP with trust or After the connection between the ePDGs, the establishment of the security association with the initial P-GW is initiated by the UE, thereby establishing a connection between the initial P-GW and the target P-GW, and the downlink user data sent by the external PDN is continuously sent to The target P-GW forwards the data to the initial P-GW, and then sends the data to the UE by the initial P-GW to implement service continuity. With the present invention, the UE can establish communication with the target P-GW, which saves network resources and can improve the speed and user experience of the UE accessing the network.

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

Abstract

L’invention concerne un procédé et un système permettant d’établir une connexion de réseau mobile. Le procédé comporte les étapes suivantes : ajouter une interface entre une passerelle de réseau de données par paquets (P-GW) et une P-GW voulue; après que l’installation d’abonné (UE) a accédé à la P-GW voulue par l’intermédiaire d’un réseau d’accès radio terrestre universel évolué (E-UTRAN) et d’une passerelle de services, et a établi la connexion avec un projet de partenariat autre que de 3e génération (3GPP) de confiance ou une passerelle de données par paquets évoluée (e-PDG), l’UE lance l’établissement de l’association de sécurité avec la P-GW initiale afin d’établir la connexion entre la P-GW initiale et la P-GW voulue; un réseau de données par paquets (PDN) externe continue d’envoyer à la P-GW voulue les données d’utilisateur de liaison descendante, et les données sont envoyées à la P-GW initiale par la P-GW voulue, puis à l’UE par la P-GW initiale afin d’assurer la continuité du service. L’invention, permet à l’UE d’établir la communication avec la P-GW voulue, d’économiser les ressources de réseau, d’augmenter la vitesse à laquelle l’UE accède à un réseau et d’améliorer le résultat perçu par l’utilisateur.
PCT/CN2009/075241 2009-07-30 2009-12-01 Procédé et système pour établir une connexion de réseau mobile Ceased WO2011011940A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200910089979.3 2009-07-30
CN200910089979.3A CN101990312B (zh) 2009-07-30 2009-07-30 一种移动网络连接的建立方法及系统

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CN102740268B (zh) * 2011-04-07 2017-04-12 中兴通讯股份有限公司 分组数据网络网关及终端移动性管理的系统
FR2977118A1 (fr) * 2011-06-24 2012-12-28 France Telecom Mecanisme de gestion de connexions pdn dans les reseaux lte/epc
CN103095860B (zh) * 2011-11-07 2017-12-22 中兴通讯股份有限公司 用户地址分配方法及系统
CN103379178A (zh) * 2012-04-13 2013-10-30 中兴通讯股份有限公司 地址分配方法及装置
WO2015096051A1 (fr) * 2013-12-25 2015-07-02 华为技术有限公司 Procédé et appareil pour équilibrage de charge

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CN105265003B (zh) * 2013-11-01 2019-11-29 华为技术有限公司 一种与分组数据网络建立连接的装置、设备及方法
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CN101990312B (zh) 2014-03-19

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