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WO2008154789A1 - Procédé de sélection d'un mode de gestion mobile dans un réseau sans fil - Google Patents

Procédé de sélection d'un mode de gestion mobile dans un réseau sans fil Download PDF

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Publication number
WO2008154789A1
WO2008154789A1 PCT/CN2008/000289 CN2008000289W WO2008154789A1 WO 2008154789 A1 WO2008154789 A1 WO 2008154789A1 CN 2008000289 W CN2008000289 W CN 2008000289W WO 2008154789 A1 WO2008154789 A1 WO 2008154789A1
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WO
WIPO (PCT)
Prior art keywords
mobile terminal
management mode
mobility management
network
access
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/CN2008/000289
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English (en)
Chinese (zh)
Inventor
Zaifeng Zong
Gang Chen
Hongyue Sun
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ZTE Corp
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ZTE Corp
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Filing date
Publication date
Application filed by ZTE Corp filed Critical ZTE Corp
Publication of WO2008154789A1 publication Critical patent/WO2008154789A1/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
    • 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
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/04—Network layer protocols, e.g. mobile IP [Internet Protocol]
    • H04W80/045—Network layer protocols, e.g. mobile IP [Internet Protocol] involving different protocol versions, e.g. MIPv4 and MIPv6

Definitions

  • the present invention relates to the field of wireless networks, and in particular, to a method for selecting a mobility management mode in a wireless network.
  • Mobile IP Mobile IP
  • MN Mobile Node
  • HoA Home of Address
  • RRQ Register Request, for MIPv4
  • Proxy Mobile IP means that there is a proxy node (Proxy mobile IP Agent) in the access network.
  • the proxy node is responsible for sending the mobile IP binding update to the mobile agent instead of the mobile terminal.
  • a message or registration request message to inform the home agent of the new location of the mobile terminal.
  • proxy mobile IP is an ability to access the network.
  • Many existing access networks do not have the ability to support proxy mobile IP; and proxy mobile IPv6 introduces new variables, which requires the home agent to support this variable in order to support proxy mobile IP.
  • Mobile terminals may support standard MIP (such as MIPv4 or MIPv6) or mobile IP.
  • MIPv4 or MIPv6 mobile IP.
  • the selection result is determined. For example, when the mobile terminal supports both ⁇ 6 and ⁇ 6, and the home agent only supports MIPv6, it does not need to consider the support capability of the access network.
  • the result of the selection is MIPv6.
  • MIPv6 Only in a few cases, there are selection problems, such as mobile terminals and home agents supporting both MIPv6 and PMIPv6, and access When the network only supports PMIPv6, further selection is needed to get the exact result.
  • the network entities know the mobility management protocols supported by other entities. For example, how does the mobile terminal know that the access network supports PMIPv6, so choose PMIPv6 as the current mobility management protocol? How does the access network know if the home agent of the mobile terminal supports PMIPv6?
  • the WiMax Worldwide Interoperability for Microwave Access
  • MIPv4 is preferred; otherwise, the proxy moves IPv4.
  • the access gateway sends a Router Advertisement message to the mobile terminal, where the message includes the address of the access gateway, and the address is used as the attention address of the mobile terminal (CoA, Care) -of-address ).
  • the access gateway determines that the mobile terminal supports MIPv4, and then selects the MIPv4 protocol as the mobility management protocol of the mobile terminal; if the access gateway receives the mobile The DHCP discovery message sent by the terminal, the access gateway considers that the mobile terminal does not support MIPv4, and then selects PMIPv4 as the mobile management protocol of the mobile terminal.
  • RRQ registration request message
  • This implicit mobility management protocol selection method in WiMax only supports IPv4, and can only be used in the case of preferred terminal-based mobile IP (Client based MIP), when it is necessary to support IPv6, or need to support preferred proxy mobility. For IP, a new approach is needed.
  • the technical problem to be solved by the present invention is to provide a method for selecting a mobility management mode in a wireless network.
  • a mobile terminal starts up in a new access network or switches to a new access network, an appropriate mobility management mode can be selected. It solves the problem of how to understand the mobility management modes supported by other entities between network entities.
  • the present invention provides a method for selecting a mobility management mode in a wireless network, including the following steps, a mobile terminal accesses the network, and sends the mobility management mode supported by the mobile terminal to the access gateway during authentication;
  • the access gateway integrates its own and the mobility management mode supported by the mobile terminal, and selects a mobility management mode for access by the mobile terminal.
  • the authentication is access authentication or tunnel authentication.
  • step b further includes: in the access authentication process or the tunnel authentication process, the authentication system of the home network of the mobile terminal may be allocated to the home agent supported by the mobile terminal.
  • a mobility management mode is sent to the access gateway.
  • the method further includes: in the access authentication process or the tunnel authentication process, the authentication system of the home network of the mobile terminal sends the mobility management mode subscribed by the mobile terminal to the access gateway.
  • the access gateway is When the mobile terminal selects the mobility management mode, it should also integrate the mobility management mode supported by the home agent and/or the mobility management mode subscribed by the mobile terminal.
  • the above-mentioned home agent that can be assigned to the mobile terminal is one or more.
  • the access gateway saves the priority information.
  • the mobility management mode with the highest priority is preferentially selected.
  • the authentication system of the home network transmits the IP address of the home agent and the mobility management mode supported by the home agent to the access gateway in the authentication and authorization charging response message.
  • the access gateway is an evolved data service gateway or a gateway device with access authentication function in the radio access network;
  • the authentication system of the home network includes the third generation partner program network authentication authorization charging server and the third generation partner program network authentication authorization charging proxy server;
  • the third generation partner program network authentication authorization charging server is located at the The home network of the mobile terminal, The access of the mobile terminal, the establishment of the IP security tunnel, the mobile IP protocol for authentication, and the assignment of the home agent to the mobile terminal together with the home subscriber server;
  • the above-mentioned home agent is a data network gateway, which serves as an egress gateway to and from the external data network.
  • the invention also discloses a method for selecting a mobility management mode in a wireless network, comprising the following steps,
  • the mobile terminal sends the mobile management mode supported by the mobile terminal to the evolved data service gateway according to the priority order set by the mobile terminal, and the evolved The data service gateway saves configuration options of the mobile terminal;
  • the evolved data service gateway informs the third generation partner plan network authentication authorization charging server in the process of authorizing the access point name, the mobile terminal needs mobile management mode support, and requires the third generation partner Plan the network authentication and authorization billing server to allocate a data network gateway;
  • the third generation partner program network authentication authorization charging server sends the mobile management mode signed by the mobile terminal, the IP address of the data network gateway, and the mobile management mode supported by the data network gateway to the An evolved data service gateway;
  • the evolved data service gateway integrates a mobility management mode in the mobile terminal configuration option, a mobility management mode subscribed by the mobile terminal, a mobility management mode supported by the data network gateway, and a self-supported The ability of the mobility management mode determines the selected mobility management mode and places the selected mobility management mode in the configuration options for transmission to the mobile terminal.
  • AAA Authentication, Authorization, Accounting, ie authentication, authorization, accounting
  • AAA collects the mobility management mode capabilities supported by the home agent and sets the IP address of the home agent.
  • the mobility management mode capability is sent to the access gateway; the capability of the access gateway to integrate the mobile terminal, the capability of accessing the network, and the capability of the home agent determine the selected mobility management mode, It solves the problem of selecting proxy mobile IP or standard mobile IP when the mobile terminal starts up in a new access network or switches to a new access network, and also solves how mobile entities supported by other entities are supported by network entities. The problem of the model, thus improving the quality of service.
  • FIG. 1 is a flow chart of a method for selecting a mobility management mode in a wireless network according to an embodiment of the present invention
  • FIG. 2 is a structural diagram of an interworking example of IWLAN and 3GPP according to an embodiment of the present invention
  • FIG. 3 is a sequence diagram of a method for selecting a mobility management mode in an interworking example between IWLAN and 3GPP according to an embodiment of the present invention.
  • the new access network includes a UMTS network, a WiFi network, a WiMax network, an IWLAN (Interworking Wireless LAN), or a 3GPP network. (3rd Generation Partnership Project), etc.
  • the method of selecting the mobility management mode in the wireless network includes the following steps, as shown in FIG. 1:
  • Step 110 The mobile terminal accesses the network, and sends the mobility management mode information supported by the mobile terminal to the access gateway when the authentication (such as access authentication or tunnel authentication) is performed;
  • the mobile terminal access network includes the mobile terminal starting up in a new access network or switching to a new access network.
  • the priority order may also be set for these mobility management modes and the priority information may be simultaneously sent to the access gateway.
  • Step 120 In the authentication process, the authentication system of the home network (ie, the AAA system) selects the home agent for the mobile terminal, acquires the mobile management mode supported by the home agent, and moves the IP address of the home agent and the mobile supported by the home agent. The management mode is sent to the access gateway.
  • the authentication system of the home network ie, the AAA system
  • the AAA system selects the home agent for the mobile terminal, acquires the mobile management mode supported by the home agent, and moves the IP address of the home agent and the mobile supported by the home agent.
  • the management mode is sent to the access gateway.
  • the authentication system may set the IP address of the home agent in the AAA response message and the The mobility management mode supported by the home agent is sent to the access gateway.
  • Step 130 The access gateway integrates the capabilities of its own, the mobile terminal, and the home agent to support the mobility management mode, and selects a suitable mobility management mode for the access of the mobile terminal.
  • Step 140 The mobile terminal accesses the network by using the access gateway for its designated mobility management mode.
  • the authentication system of the home network of the mobile terminal described in step 120 may selectively return the mobility management mode supported by the home agent and/or the mobility management mode signed by the mobile terminal. Give the access gateway.
  • the access gateway integrates the capabilities of the mobility management mode supported by itself, the mobile terminal, and the home agent, and/or the mobility management mode subscribed by the mobile terminal, and selects a suitable mobility management mode for the access of the mobile terminal. .
  • the authentication system of the home network does not return any information to the access gateway.
  • the mobility management mode supported by the home agent and/or the mobility management mode signed by the mobile terminal may be ignored.
  • the access gateway directly selects a suitable mobility management module for the access of the mobile terminal according to its own capabilities and the mobility management mode supported by the mobile terminal.
  • the foregoing embodiment is applicable to a case where a mobile terminal accesses a 3GPP network from a trusted non-3GPP network or an untrusted non-3GPP network, where the access gateway is a gateway device with access authentication function in the radio access network (such as WiMax (microwave) a radio access network access gateway (ASN-AGW) that accesses global interworking); when the trusted non-3GPP network interworks with the 3GPP network, the access gateway is a gateway device with an authentication function located in a non-3GPP network And the mobility management mode capability is sent to the access gateway when the access authentication is performed; when the non-trusted non-3GPP network communicates with the 3GPP network, the access gateway is an evolved data service gateway (ePDG) And the mobility management mode capability is sent to the ePDG during tunnel authentication.
  • the radio access network such as WiMax (microwave) a radio access network access gateway (ASN-AGW) that accesses global interworking
  • ASN-AGW radio access network access gateway
  • Figure 2 is an architectural diagram of the present example, including devices and interfaces,
  • the device includes: UE (User Equipment, mobile terminal), ePDG, PDN GW (Packet data network gateway), 3GPP AAA Server (3GPP authentication and authorization charging) Server), 3GPP Proxy AAA (3GPP AAA Proxy Server), HSS (Home Subscriber Server, Home Subscriber Server);
  • UE User Equipment, mobile terminal
  • ePDG Packet data network gateway
  • PDN GW Packet data network gateway
  • 3GPP AAA Server 3GPP authentication and authorization charging) Server
  • 3GPP Proxy AAA 3GPP AAA Proxy Server
  • HSS Home Subscriber Server, Home Subscriber Server
  • HSS Home Subscriber Server, Home Subscriber Server
  • the interface includes interface Wu, interface Wn*, interface S2b, interface S2c, interface Wm*, interface Wx*, interface Wd*, interface S6c, and interface SGi.
  • the UE is a mobile terminal, and is also referred to as a MN in the mobile IP.
  • the UE is located in a range covered by the untrusted non-3GPP access network, and the UE accesses the 3GPP service through the ePDG.
  • the ePDG is configured to access the UE to the 3GPP network, where the ePDG is an access gateway of the access network in the architecture;
  • the PDN GW has a home agent function for the egress gateway to the external data network; in Figure 2, the PDN GW is located in the home network, but in actual network deployment, the PDN GW can also be located in the visited network.
  • the 3GPP AAA Server is located in the home network of the UE, and is used for authenticating the access of the UE, establishing the IPSec tunnel, and the mobile IP protocol, and assigning the PDN GW to the UE together with the HSS;
  • 3GPP Proxy AAA located in the visited network, used for secure forwarding of AAA messages, and controls access of the UE to the visited network;
  • the authentication system of the home network includes a 3GPP AAA Server and a 3GPP Proxy AAA.
  • the HSS is used to store subscription information of a user, a shared key of a user, and the like;
  • Interface Wu Used for the interface between the UE and the ePDG.
  • the interface runs the tunnel mode of the IPSec (IP Security) protocol.
  • Interface Wn* interface between the ePDG and the WLAN IP access system
  • Interface S2b used for the interface between the PDN GW and the ePDG.
  • the interface is valid. Otherwise, the interface does not exist.
  • the proxy mobile IP protocol is run on the interface.
  • the interface S2c is used for the UE and the PDN. The interface between the GWs, when the UE is accessed by using the mobile IP based on the client, the interface is used, and the interface runs the mobile IP protocol;
  • Interface Wm* used for ePDG and 3GPP AAA proxy server located in roaming area (ie 3GPP
  • the interface is the interface between the ePDG and the AAA system.
  • Interface Wx* used for the interface between the 3GPP AAA Server and the HSS.
  • the interface is used to obtain data such as user vectors and subscription information.
  • Interface Wd* used for the interface between the 3GPP AAA Server and the 3GPP AAA proxy server.
  • the interface is mainly used for forwarding AAA messages.
  • Interface S6c used for the interface between the PDN GW and the 3GPP AAA Server, which is used to obtain the authentication information related to the mobile IP;
  • Interface SGi Used for the interface between the 3GPP network and the external data network.
  • the UE may or may not support mobile IP; the ePDG may or may not support proxy mobile IP; the PDN GW may or may not support proxy mobile IP. Only standard mobile IP is supported, as shown in Table 1. Therefore, it is necessary to select the mobility management mode used by the UE when the UE accesses.
  • Figure 3 is a diagram for the architecture of Figure 2, which includes the selection of the mobility management mode of the UE.
  • the UE in the establishment process of the IPSec tunnel of the UE, the UE sends the mobility management mode supported by the UE to the ePDG according to the priority order of the mobility management mode that is set, and the ePDG saves the UE.
  • the IP address of the GW and the mobility management mode supported by the PDN GW are sent to the ePDG; the mobility management mode in the ePDG integrated UE configuration option, the mobility management mode subscribed by the UE, and the mobility management mode supported by the PDN GW and The ability of the mobile management mode supported by itself determines the selected mobility management mode, and the selected mobility management mode is sent to the UE in the configuration option; the UE accesses the network using the specified mobility management mode.
  • Step 1 Perform an IKE (Internet Key Exchange) initialization message between the UE and the ePDG; perform an IKE initialization message between the UE and the ePDG, and exchange IKE key information and an algorithm.
  • IKE Internet Key Exchange
  • Step 2 The UE sends an IKE authentication request message to the ePDG, and the ePDG saves the configuration option content after receiving the message.
  • the UE places the mobility management modes supported by the UE in the priority order.
  • the option is sent to the ePDG.
  • the UE also sends the access point name information to the ePDG in the message, and the ePDG should save the access point name for later use; the message further includes the UE ID, the security association, Select the child.
  • Step 3 According to the prior art, the system performs EAP AKA authentication on the UE.
  • Step 4 The ePDG authenticates the access point name of the UE, and requests the 3GPP AAA Server to allocate the PDN GW to the UE.
  • the ePDG sends the access point name to the 3GPP AAA Server;
  • the access point name can be used to indicate whether the UE needs mobile IP support.
  • Step 5 The 3GPP AAA Server interacts with the HSS, requests the subscription information of the UE, authenticates the access point name, and allocates a PDN GW to the UE.
  • the 3GPP AAA Server checks whether the UE has access to the data network indicated by the access point name; if the access point name is checked successfully, the 3GPP AAA Server allocates the PDN GW to the UE according to its configuration and the subscription information of the UE obtained from the HSS.
  • the 3GPP AAA Server queries the local configuration according to the access point name obtained in step 4, if the access point name is configured in the 3GPP AAA Server to provide mobile IP support, and is configured The IP address and mobility management mode of the corresponding PDN GW, the 3GPP AAA Server obtains the IP address and the mobility management mode of the PDN GW from the configuration information; or, the 3GPP AAA Server determines that the UE needs the mobile IP according to the subscription information obtained from the HSS.
  • the IP address of the PDN GW and the mobility management mode required for the mobile IP are configured in the subscription information of the UE, and the 3GPP AAA Server acquires the IP address and the mobility management mode of the PDN GW from the subscription information of the UE.
  • the method for selecting the PDN GW and the method for determining the PDN GW mobility management mode are various.
  • the methods listed in the specific embodiments of the present invention are only one of them, and can be customized according to requirements when implemented.
  • Step 6 The 3GPP AAA Server sends an authentication response message to the ePDG.
  • the 3GPP AAA Server sends the IP address of the PDN GW and its supported mobility management mode and the mobility management mode subscribed by the UE to the ePDG. If the 3GPP AAA Server selects more than one PDN GW for the UE in step 5, the message includes a list of PDN GWs and respective supported mobility management modes. Step 7: The mobility management mode in the configuration option received by the ePDG from the UE and the mobility management mode supported by the UE, and the received PDN GW list and the mobility management mode subscribed by the UE select a mobility management mode for the UE;
  • the ePDG can customize the method of selecting the mobility management mode according to actual needs. For example, the ePDG may be selected according to a priority order of the mobility management mode supported by the UE, if the mobility management mode of the previous priority is compatible with the mobility management mode subscribed by the UE, the mobility management mode supported by the home agent, and the access gateway. The mobility management mode does not match, and then the next priority mobility management protocol supported by the UE is tried. Alternatively, the UE does not transmit the priority information of the mobile management mode, and when there are multiple selectable mobility management modes, the mobile management mode subscribed by the UE is preferentially selected.
  • Step 8 The ePDG calculates an IKE authentication vector.
  • the ePDG calculates the IKE authentication vector based on the key material obtained in step 3.
  • Step 9 The ePDG sends an IKE authentication response to the UE.
  • the response contains an EAP success message.
  • Step 10 The UE sends an IKE authentication request to the ePDG, and after receiving the IKE authentication request, the ePDG authenticates the identity of the UE according to the authentication vector.
  • the UE sends an IKE authentication request to the ePDG, and the UE calculates an authentication vector according to the key generated in the authentication phase.
  • the ePDG After receiving the IKE authentication request, the ePDG authenticates the identity of the UE according to the authentication vector, and confirms that the IKE initial message sent by the UE to the ePDG in step 1 is indeed sent by the same UE, and is not modified.
  • Step 11 The ePDG sends an IKE authentication response to the UE, and the ePDG sends the selected mobility management mode to the UE in the configuration payload.
  • the ePDG recalculates the authentication vector according to the key generated by the EAP authentication process.
  • the ePDG sends the mobility management mode selected in step 7 to the UE in the configuration payload.
  • the message also negotiates between the UE and the ePDG.
  • the IPSec sub-security association the ePDG sends the sub-security association and its selectors to the UE.
  • the present invention is applied to a process in which a mobile terminal moves between different types of networks, such as moving from a UMTS (Universal Mobile Telecommunications System) network to a Wireless Fidelity (WiFi) network, or a case where a non-3GPP network can communicate with a 3GPP network.
  • the technical solution of the present invention solves the problem of selecting a proxy mobile IP or a standard mobile IP when a mobile terminal starts up in a new access network or switches to a new access network, and also solves how other entities are known between network entities. Support for the problem of mobile management mode, thereby increasing the amount of service shield.

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

Abstract

La présente invention concerne un procédé pour choisir un mode de gestion mobile dans un réseau sans fil qui appartient à un réseau sans fil. Le procédé de l'invention comprend les étapes suivantes : un terminal mobile accède au réseau, lors de l'authentification, il envoie le mode de gestion mobile soutenu par le terminal mobile à une passerelle d'accès ; la passerelle envisage la capacité des modes de gestion mobiles soutenus par le terminal mobile et la passerelle, afin de sélectionner un mode de gestion mobile pour l'accès au terminal mobile. L'invention résout le problème de savoir l'IP mobile de proxy ou l'IP mobile standard qui doit être sélectionné lorsque le terminal mobile s'initie dans un nouveau réseau d'accès ou commute dans un nouveau réseau d'accès et résout également le problème pour une entité réseau de connaître le mode de gestion mobile supporté par l'autre entité réseau, de manière à améliorer la qualité du service.
PCT/CN2008/000289 2007-06-18 2008-02-03 Procédé de sélection d'un mode de gestion mobile dans un réseau sans fil Ceased WO2008154789A1 (fr)

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CN2007101107881A CN101330719B (zh) 2007-06-18 2007-06-18 一种无线网络中选择移动管理模式的方法

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