WO2008154789A1 - A method of selecting mobile management mode in wireless network - Google Patents
A method of selecting mobile management mode in wireless network Download PDFInfo
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- 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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- WIPO (PCT)
- Prior art keywords
- mobile terminal
- management mode
- mobility management
- network
- access
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- 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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Description
一种无线网络中选择移动管理模式的方法
技术领域
本发明涉及无线网络领域,尤其涉及一种无线网络中选择移动管理模式 的方法。
背景技术
移动 IP ( Mobile IP )是得到广泛接收的一种移动管理协议, 它能保持移 动终端 (MN, Mobile Node )在不同网络间移动时 IP连接不中断。 在移动 IP中, 移动终端保持其归属地 IP地址(HoA, Home of Address ) 不变, 当 移动终端的接入点发生改变时, 移动终端通过绑定更新 (Binding Update, 适 用于 MIPv6)或注册请求消息 (RRQ, Register Request, 适用于 MIPv4 )将 该变化通知位于其归属网 Home Network )的家乡代理( HA, Home Agent ), 以使发送给该移动终端的数据能正确路由到新的接入点。
移动 IP技术要求移动终端支持移动 IP协议。 在现实的实现中, 很少有 支持移动 IP的移动终端。 因此, 一种代理移动 IP ( PMIP, Proxy Mobile IP ) 的技术得到了发展。代理移动 IP是指在接入网络中存在一个代理节点( Proxy mobile IP Agent ) , 当移动终端在不同接入点间移动时, 该代理节点负责代 替移动终端向其家乡代理发送移动 IP绑定更新消息或注册请求消息, 以通 知其家乡代理该移动终端的新位置。
当移动终端在不同类型的网络间移动时, 如从 UMTS (通用移动通信系 统)网络移动到无线保真(WiFi )网络, 往往需要从一个网络适配器切换到 另一网络适配器,比如,从支持 UMTS的 PC机内存卡国际联合^ PCMCIA ) 卡切换到 WiFi网卡, 此时, 要支持业务不中断, 在切换前后不同网络适配 器必须使用同一 IP地址(即 HoA ) 。 在目前的无线终端的实现中, 未能将 IP层与 MAC层很好地分离, 因此, 目前的大多数移动终端不支持该功能。 这样的移动终端在做跨网络类型的切换时无法使用代理移动 IP保持业务的 连续, 而必须使用移动 IP保持业务连续。
另外, 对代理移动 IP的支持是一种接入网络的能力。 很多现有的接入 网络不具备支持代理移动 IP的能力;并且,代理移动 IPv6引入了新的变量, 这要求家乡代理也必须支持该变量才能支持代理移动 IP。
当一个移动终端在一个新的接入网络中启动或者切换到一个新的接入 网络时, 选择代理移动 IP还是标准移动 IP成为了一个新的问题。 这需要综 合考虑移动终端的能力、接入网络的能力和家乡代理的能力。移动终端可能 支持标准的 MIP (如 MIPv4或 MIPv6 ) , 也可能不支持移动 IP。 当移动终 端不支持移动 IP时, 则要求接入网络支持代理移动 IP, 否则无法保证移动 终端的业务连续性。 以 IPv6为例, 可能的组合如表 1所示:
从表 1可以看出, 大多数情况下, 选择结果是确定的, 比如当移动终端 既支持 ΜΙΡν6又支持 ΡΜΙΡν6, 而家乡代理仅支持 MIPv6时, 不需要考虑接 入网的支持能力, 即可确定选择结果为 MIPv6。 只有在少数情况下才存在选 择问题, 比如移动终端和归属代理既支持 MIPv6, 又支持 PMIPv6, 而接入
网只支持 PMIPv6时, 还需要进一步进行选择才能得到确切的结果。 但是, 即便是在如表 1所示结果确定的情况下,也还是存在网络实体间如何获知其 他实体所支持的移动管理协议的问题。 比如, 移动终端如何知道接入网络是 支持 PMIPv6的, 从而选择 PMIPv6作为当前的移动管理协议? 接入网络又 如何获知移动终端的归属代理是否支持 PMIPv6? 等等。
WiMax (微波存取全球互通)标准中定义了一种隐式的不需要能力交互 的移动管理协议的选择方法。在 WiMax中规定,当移动终端( Mobile Station ) 支持 MIPv4时, 优先选择 MIPv4; 否则采用代理移动 IPv4。 当移动终端的 接入认证结束后, 接入网关给移动终端发送路由通告消息 ( Router Advertisement ) , 在该消息中包含接入网关的地址, 该地址被用作移动终端 的关注地址 (CoA, Care-of-address ) 。 若接入网关收到移动终端发送的注 册请求消息 (RRQ ) , 则接入网关确定该移动终端是支持 MIPv4的, 于是 选择 MIPv4协议作为此移动终端的移动管理协议; 若接入网关收到移动终 端发送的 DHCP发现消息,则该接入网关认为该移动终端不支持 MIPv4,于 是选择 PMIPv4作为该移动终端的移动管理协议。
WiMax中的这种隐式的移动管理协议的选择方法只支持 IPv4, 并且只 能用在优选基于终端的移动 IP时的情形 ( Client based MIP ) , 当需要支持 IPv6时, 或需要支持优选代理移动 IP时, 需要一种新的方法。
综上所述,当前亟需一种显式的需要能力交互的选择移动管理模式的方 法。
发明内容
本发明所要解决的技术问题是提供一种无线网络中选择移动管理模式 的方法,移动终端在新的接入网络中启动或者切换到新的接入网络时可选择 合适的移动管理模式,同时也解决了网络实体间如何获知其他实体所支持的 移动管理模式的问题。
为了解决上述问题,本发明提供了一种无线网络中选择移动管理模式的 方法, 包括以下步骤,
a、 移动终端接入网络, 在认证时将移动终端所支持的移动管理模式发 送给接入网关;
b、 所述接入网关综合其自身以及所述移动终端所支持的移动管理模式 的能力, 为所述移动终端的接入选择移动管理模式。
进一步地, 上述方法中, 所述认证为接入认证或者隧道认证。
上述方法, 在所述步骤 b之前, 还包括, 在所述接入认证过程中或者隧 道认证过程中,所述移动终端的家乡网络的认证系统将可分配给该移动终端 的家乡代理所支持的移动管理模式发送给所述接入网关。
上述步骤 b之前,还包括,在所述接入认证过程中或者隧道认证过程中, 所述移动终端的家乡网络的认证系统将该移动终端所签约的移动管理模式 发送给所述接入网关。
上述方法中, 所述认证系统将所述家乡代理所支持的移动管理模式和 / 或所述移动终端所签约的移动管理模式发送给所述接入网关后,所述接入网 关在为所述移动终端选择移动管理模式时还应综合所述家乡代理所支持的 移动管理模式和 /或所述移动终端所签约的移动管理模式的能力。
上述可分配给所述移动终端的家乡代理为一个或多个。
进一步地, 上述方法中, 所述步骤 a中, 所述移动终端支持多种移动管 理模式时,对这些移动管理模式设定优先级顺序并将该优先级信息同时发送 给所述接入网关, 所述接入网关保存该优先级信息, 在有多个所述移动终端 支持的移动管理模式可供选择时,优先选择其中优先级最高的一种移动管理 模式。
上述家乡网络的认证系统在认证授权计费响应消息中将所述家乡代理 的 IP地址及该家乡代理所支持的移动管理模式发送给所述接入网关。
上述接入网关为演进的数据业务网关或无线接入网中具有接入认证功 能的网关设备;
上述家乡网络的认证系统包括第三代合作伙伴计划网络认证授权计费 服务器和第三代合作伙伴计划网络认证授权计费代理服务器;所述第三代合 作伙伴计划网络认证授权计费服务器位于所述移动终端的家乡网络,对所述
移动终端的接入、 IP安全隧道的建立、 移动 IP协议进行认证, 并与所述归 属用户服务器一起为所述移动终端分配所述家乡代理;
上述家乡代理为数据网网关, 作为接出到外部数据网络的出口网关。
本发明还公开了一种无线网络中选择移动管理模式的方法,包括以下步 骤,
tl、在移动终端的 IP安全隧道的建立过程中,移动终端将其所支持的移 动管理模式按其所设定的优先级顺序放在配置选项中发送给演进的数据业 务网关, 所述演进的数据业务网关保存所述移动终端的配置选项;
t2、 所述演进的数据业务网关在对接入点名进行授权的过程中告知第三 代合作伙伴计划网络认证授权计费服务器该移动终端需要移动管理模式支 持,并要求所述第三代合作伙伴计划网络认证授权计费服务器为其分配数据 网网关;
t3、 所述第三代合作伙伴计划网络认证授权计费服务器将移动终端所签 约的移动管理模式及所述数据网网关的 IP地址及该数据网网关所支持的移 动管理模式的能力发送给所述演进的数据业务网关;
t4、 所述演进的数据业务网关综合所述移动终端配置选项中的移动管理 模式、所述移动终端所签约的移动管理模式、所述数据网网关支持的移动管 理模式的能力及其自身支持的移动管理模式的能力决定所选择的移动管理 模式, 并将选定的移动管理模式放在配置选项中发送给所述移动终端。
与现有技术相比, 本发明采用系统对移动终端进行接入认证时, 移动终 端将自己所支持的移动管理模式按优先级顺序发送给接入网关 (Access Gateway );在系统认证过程中,认证系统( AAA系统, AAA为 Authentication、 Authorization, Accounting, 即认证、 授权、 计费) 为移动终端分配家乡代 理, AAA 系统收集家乡代理所支持的移动管理模式能力, 并将该家乡代理 的 IP地址和移动管理模式能力一起发送给接入网关; 接入网关综合移动终 端的能力、接入网络的能力、及家乡代理的能力决定所选择的移动管理模式,
解决了当移动终端在新的接入网络中启动或者切换到新的接入网络时,选择 代理移动 IP还是标准移动 IP的问题, 同时也解决了网络实体间如何获知其 他实体所支持的移动管理模式的问题, 从而提高了服务质量。 附图概述
图 1 是本发明具体实施方式的无线网络中选择移动管理模式方法的流 程图;
图 2是本发明具体实施方式的 IWLAN与 3GPP的互通实例的架构图; 图 3是本发明具体实施方式的 IWLAN与 3GPP的互通实例中选择移动 管理模式方法的步骤图。
本发明的较佳实施方式
下面结合附图和具体实施方式对本发明作详细说明。
当移动终端在新的接入网络中启动或者切换到新的接入网络,所述新的 接入网络包括 UMTS网络、 WiFi网络、 WiMax网络、 IWLAN ( Interworking Wireless LAN, 互通无线局域网)或者 3GPP网络(第三代合作伙伴计划) 等, 此时, 无线网络中选择移动管理模式的方法, 包括以下步骤, 如图 1所 示:
步 110、 移动终端接入网络, 在认证(如接入认证或隧道认证) 时将 其所支持的移动管理模式信息发送给接入网关;
移动终端接入网络包括移动终端在新的接入网络中启动或者切换到新 的接入网络。
如移动终端支持多种移动管理模式时,还可以为这些移动管理模式设定 优先级顺序并将该优先级信息同时发送给接入网关。
步骤 120、 在认证过程中, 家乡网络的认证系统(即 AAA系统) 为移 动终端选择家乡代理, 获取家乡代理所支持的移动管理模式, 并将家乡代理 的 IP地址及该家乡代理所支持的移动管理模式发送给接入网关。
该步骤中,认证系统可以在 AAA响应消息中将家乡代理的 IP地址及该
家乡代理所支持的移动管理模式发送给接入网关。
步骤 130、 接入网关综合其自身、 移动终端以及家乡代理所支持移动管 理模式的能力, 为移动终端的接入选择适合的移动管理模式。
步骤 140、 移动终端使用接入网关为其指定的移动管理模式接入到网络 中。
在其它实施例中, 执行完步骤 110后, 步骤 120所述的移动终端的家乡 网络的认证系统可以选择性地将家乡代理所支持的移动管理模式和 /或移动 终端所签约的移动管理模式返回给接入网关。 此时, 步骤 130中, 接入网关 综合其自身、 移动终端以及家乡代理所支持移动管理模式的能力和 /或移动 终端所签约的移动管理模式, 为移动终端的接入选择适合的移动管理模式。
当然在其它实施例中,还存在家乡网络的认证系统未向接入网关返回任 何信息的情况, 此时, 可不考虑家乡代理所支持的移动管理模式和 /或移动 终端所签约的移动管理模式,执行完步骤 110后,接入网关直接根据其自身 以及移动终端所支持移动管理模式的能力,为移动终端的接入选择适合的移 动管理模块。
上述实施例适用于移动终端从可信任非 3GPP 网络或者从非信任非 3GPP网络接入 3GPP网络的情况, 其中接入网关是无线接入网中具有接入 认证功能的网关设备(如 WiMax (微波存取全球互通) 的无线接入网接入 网关 (ASN-AGW ) ) ; 当可信任非 3GPP网络与 3GPP网络互通时, 所述 接入网关是位于非 3GPP网络中的具有认证功能的网关设备, 且移动管理模 式能力是在接入认证时发送给接入网关的; 当非信任非 3GPP网络与 3GPP 网络互通时, 所述接入网关是演进的数据业务网关(ePDG, evolved Packet data gateway ) , 且移动管理模式能力是在隧道认证时发送给 ePDG的。
下面以非信任非 3GPP与 3GPP的互通为例, 对本发明作进一步说明。 图 2是本实例的架构图, 包括设备和接口,
其中设备包括, UE( User Equipment,移动终端)、 ePDG、 PDN GW( Packet data network gateway, 数据网网关)、 3GPP AAA Server(3GPP认证授权计费
服务器)、 3GPP Proxy AAA( 3GPP AAA代理服务器)、 HSS( Home Subscriber Server, 归属用户服务器) ;
其中接口包括, 接口 Wu、接口 Wn*、接口 S2b、 接口 S2c、接口 Wm*、 接口 Wx*、 接口 Wd*、 接口 S6c、 接口 SGi。
UE为移动终端, 在移动 IP中也称为 MN, 位于非信任非 3GPP接入网 络所覆盖的范围, UE通过 ePDG访问 3GPP业务;
ePDG, 用于将 UE接入到 3GPP网络, ePDG在本架构中是接入网的接 入网关;
PDN GW, 具有家乡代理功能, 用于到外部数据网络的出口网关; 图 2中 PDN GW位于家乡网络, 但在实际网络部署时, PDN GW也可 以位于拜访网络。
3GPP AAA Server, 位于 UE的家乡网络, 用于对 UE的接入、 IPSec隧 道的建立、 移动 IP协议进行认证, 并与 HSS—起为 UE分配 PDN GW;
3GPP Proxy AAA, 位于拜访网络, 用于 AAA消息的安全转发, 并且控 制 UE在拜访网络的准入;
所述家乡网络的认证系统包括 3GPP AAA Server和 3GPP Proxy AAA。
HSS用于存储用户的签约信息、 用户共享密钥等;
接口 Wu: 用于 UE与 ePDG间的接口,该接口上运行 IPSec( IP Security, IP通讯安全)协议的隧道模式;
接口 Wn*: ePDG与 WLAN IP接入系统间的接口;
接口 S2b: 用于 PDN GW与 ePDG之间的接口, 当 ePDG支持代理移动 IP时, 该接口才有效, 否则该接口不存在, 该接口上运行代理移动 IP协议; 接口 S2c: 用于 UE与 PDN GW间的接口, 当采用基于客户端的移动 IP 对 UE进行接入时, 使用到该接口, 该接口运行移动 IP协议;
接口 Wm*:用于 ePDG与位于漫游地的 3GPP AAA代理服务器(即 3GPP
AAA Proxy ) 间的接口, 该接口上运行 AAA协议, 该接口是 ePDG与 AAA 系统间的接口;
接口 Wx*: 用于 3GPP AAA Server与 HSS间的接口, 该接口用来获取 用户向量、 签约信息等数据;
接口 Wd*: 用于 3GPP AAA Server与 3GPP AAA代理服务器间的接口, 该接口主要是用作 AAA消息的转发;
接口 S6c: 用于 PDN GW与 3GPP AAA Server间的接口,该接口用来获 取移动 IP相关的认证信息;
接口 SGi: 用于 3GPP网络与外部数据网间的接口。
在图 2中, UE可能支持移动 IP, 也可能不支持移动 IP; ePDG可能是 支持代理移动 IP, 也可能不支持代理移动 IP; PDN GW可能支持代理移动 IP, 也可能不支持代理移动 IP, 只支持标准的移动 IP, 如表 1所示。 因此, 在 UE接入时需要选择 UE所使用的移动管理模式。
图 3是针对图 2的架构, 在该图中包含了 UE的移动管理模式的选择。 在本流程中, 在 UE的 IPSec隧道的建立流程中, UE将其所支持的移动管 理模式按其所设定的移动管理模式的优先级顺序放在配置选项中发送给 ePDG, ePDG保存 UE的配置选项; ePDG在对接入点名进行授权的过程中 告知 3GPP AAA Server该 UE需要移动管理模式支持, 并要求 3GPP AAA Server为其分配 PDN GW; 3GPP AAA Server将 UE所签约的移动管理模式、 PDN GW 的 IP地址及该 PDN GW所支持的移动管理模式的能力发送给 ePDG; ePDG综合 UE配置选项中的移动管理模式、 UE所签约的移动管理 模式、 PDN GW支持的移动管理模式的能力及其自身支持的移动管理模式的 能力决定所选择的移动管理模式,并将选定的移动管理模式放在配置选项中 发送给 UE; UE使用指定的移动管理模式接入到网络。
如图 3所示, 具体如下:
步骤 1、 UE与 ePDG间执行 IKE ( Internet密钥交换)初始化消息; UE与 ePDG间执行 IKE初始化消息, 交换 IKE密钥信息和算法。
步骤 2、 UE向 ePDG发送 IKE认证请求消息, ePDG收到该消息后保存 配置选项内容;
所述消息中, UE将自己所支持的移动管理模式按优先级顺序放在配置
选项中发送给 ePDG; 同时, UE还将接入点名信息也在该消息中发送给 ePDG, ePDG应保存该接入点名, 以备后用; 所述消息中, 还包括 UE ID、 安全联盟、 选择子。
步骤 3、 根据现有技术, 系统对 UE进行 EAP AKA认证;
步骤 4、 ePDG对 UE的接入点名进行认证, 并请求 3GPP AAA Server 给 UE分配 PDN GW。 ePDG将接入点名发送给 3GPP AAA Server;
接入点名可用来指示 UE是否需移动 IP支持。
步骤 5、 3GPP AAA Server与 HSS交互, 请求 UE的签约信息, 对接入 点名进行认证, 并为 UE分配 PDN GW;
3GPP AAA Server检查该 UE是否有权接入该接入点名所指示的数据网 络; 若检查接入点名成功, 3GPP AAA Server根据其配置及从 HSS获得的 UE的签约信息,为该 UE分配 PDN GW并确定 PDN GW所支持的移动管理 模式; 如, 3GPP AAA Server根据步骤 4获得的接入点名查询本地配置, 若 该接入点名在 3GPP AAA Server中被配置为需提供移动 IP支持, 并配置了 相应的 PDN GW的 IP地址和移动管理模式, 则 3GPP AAA Server从配置信 息中获取 PDN GW的 IP地址和移动管理模式; 或者, 3GPP AAA Server根 据从 HSS中获得的签约信息决定该 UE需要移动 IP的支持, 并且, 在 UE 的签约信息中配置有移动 IP所需的 PDN GW的 IP地址和移动管理模式, 3GPP AAA Server从 UE的签约信息中获取 PDN GW的 IP地址和移动管理 模式。
选择 PDN GW的方法及确定 PDN GW移动管理模式的方法多种多样, 本发明具体实施方式所列方法只是其中的一种,具体实现时可根据需求进行 定制。
步骤 6、 3GPP AAA Server向 ePDG发送认证响应消息;
3GPP AAA Server将 PDN GW的 IP地址和其所支持的移动管理模式以 及 UE所签约的移动管理模式发送给 ePDG。 若步骤 5中 3GPP AAA Server 为 UE选择了不止一个 PDN GW, 则该消息中包含的是 PDN GW的列表及 各自所支持的移动管理模式。
步骤 7、 ePDG从 UE收到的配置选项中的移动管理模式及自身所支持 的移动管理模式, 以及收到的 PDN GW列表和 UE所签约的移动管理模式 为 UE选择一种移动管理模式;
本发明不限定具体的选择方法。在实际应用中, 在保证终端可正常工作 的前提(可按背景技术中的表 1来判断) 下, ePDG可以根据实际需求自行 订制选择移动管理模式的方法。 如, ePDG可按照 UE支持的移动管理模式 的优先级顺序选择, 若前一优先级的移动管理模式与 UE所签约的移动管理 模式、 家乡代理所支持的移动管理模式、接入网关所支持的移动管理模式不 匹配, 再尝试 UE支持的下一优先级的移动管理协议。 或者, UE不发送移 动管理模式的优先级信息, 在有多种可选择的移动管理模式时, 优先选择 UE所签约的移动管理模式。
步骤 8、 ePDG计算 IKE认证向量;
ePDG根据步骤 3中获得的密钥素材计算 IKE认证向量。
步骤 9、 ePDG向 UE发送 IKE认证响应;
所述响应包含了 EAP成功消息。
步骤 10、 UE向 ePDG发送 IKE认证请求, ePDG收到该 IKE认证请求 后根据认证向量对 UE的身份进行认证;
UE向 ePDG发送 IKE认证请求, UE根据认证阶段产生的密钥计算认证 向量。
ePDG收到该 IKE认证请求后根据认证向量对 UE的身份进行认证, 并 且确认步骤 1中 UE向 ePDG发送的 IKE初始消息确实为同一 UE所发, 并 且未被修改。
步骤 11、 ePDG向 UE发送 IKE认证响应, ePDG将选择的移动管理模 式放在配置载荷中发送给 UE。
ePDG根据 EAP认证过程所产生的密钥重新计算认证向量,在该步骤中 ePDG将步骤 7中选择的移动管理模式放在配置载荷中发送给 UE; 同时, 该消息还同时协商 UE与 ePDG间的 IPSec子安全联盟, ePDG将子安全联 盟及其选择子发送给 UE。
以上所述, 仅为本发明较佳的具体实施方式, 但本发明的保护范围并不 局限于此,任何熟悉该技术的人在本发明所揭露的技术范围内, 可轻易想到 的变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护范 围应该以权利要求的保护范围为准。
工业实用性
本发明应用于移动终端在不同类型的网络间移动的过程, 如从 UMTS (通用移动通信系统) 网络移动到无线保真 (WiFi ) 网络, 或者可信任非 3GPP网络与 3GPP网络互通的情况等。 本发明技术方案解决了当移动终端 在新的接入网络中启动或者切换到新的接入网络时, 选择代理移动 IP还是 标准移动 IP的问题, 同时也解决了网络实体间如何获知其他实体所支持的 移动管理模式的问题, 从而提高了服务盾量。
Claims
1、 一种无线网络中选择移动管理模式的方法, 包括以下步骤, a、 移动终端接入网络, 在认证时将移动终端所支持的移动管理模式发 送给接入网关;
b、 所述接入网关综合其自身以及所述移动终端所支持的移动管理模式 的能力, 为所述移动终端的接入选择移动管理模式。
2、 如权利要求 1所述的方法, 其特征在于,
所述认证为接入认证或者隧道认证。
3、 如权利要求 2所述的方法, 其特征在于,
该方法在所述步骤 b之前,还包括, 在所述接入认证过程中或者隧道认 证过程中,所述移动终端的家乡网络的认证系统将可分配给该移动终端的家 乡代理所支持的移动管理模式发送给所述接入网关。
4、 如权利要求 1或 3所述的方法, 其特征在于
该方法在所述步骤 b之前,还包括, 在所述接入认证过程中或者隧道认 证过程中,所述移动终端的家乡网络的认证系统将该移动终端所签约的移动 管理模式发送给所述接入网关。
5、 如权利要求 4所述的方法, 其特征在于,
所述认证系统将所述家乡代理所支持的移动管理模式和 /或所述移动终 端所签约的移动管理模式发送给所述接入网关后,所述接入网关在为所述移 动终端选择移动管理模式时还应综合所述家乡代理所支持的移动管理模式 和 /或所述移动终端所签约的移动管理模式的能力。
6、 如权利要求 3所述的方法, 其特征在于,
所述可分配给所述移动终端的家乡代理为一个或多个。
7、 如权利要求 1所述的方法, 其特征在于,
所述步骤 a中, 所述移动终端支持多种移动管理模式时, 对这些移动管 理模式设定优先级顺序并将该优先级信息同时发送给所述接入网关,所述接 入网关保存该优先级信息,在有多个所述移动终端支持的移动管理模式可供 选择时, 优先选择其中优先级最高的一种移动管理模式。
8、 如权利要求 4所述的方法, 其特征在于,
所述家乡网络的认证系统在认证授权计费响应消息中将所述家乡代理 的 IP地址及该家乡代理所支持的移动管理模式发送给所述接入网关。
9、 如权利要求 3所述的方法, 其特征在于,
所述接入网关为演进的数据业务网关或无线接入网中具有接入认证功 能的网关设备;
所述家乡网络的认证系统包括第三代合作伙伴计划网络认证授权计费 服务器和第三代合作伙伴计划网络认证授权计费代理服务器;所述第三代合 作伙伴计划网络认证授权计费服务器位于所述移动终端的家乡网络,对所述 移动终端的接入、 IP安全隧道的建立、 移动 IP协议进行认证, 并与所述归 属用户服务器一起为所述移动终端分配所述家乡代理;
所述家乡代理为数据网网关, 作为接出到外部数据网络的出口网关。
10、 一种无线网络中选择移动管理模式的方法, 包括以下步骤, tl、在移动终端的 IP安全隧道的建立过程中,移动终端将其所支持的移 动管理模式按其所设定的优先级顺序放在配置选项中发送给演进的数据业 务网关, 所述演进的数据业务网关保存所述移动终端的配置选项;
t2、 所述演进的数据业务网关在对接入点名进行授权的过程中告知第三 代合作伙伴计划网络认证授权计费服务器该移动终端需要移动管理模式支 持,并要求所述第三代合作伙伴计划网络认证授权计费服务器为其分配数据 网网关;
约的移动管理模式及所述数据网网关的 IP地址及该数据网网关所支持的移 动管理模式的能力发送给所述演进的数据业务网关;
t4、 所述演进的数据业务网关综合所述移动终端配置选项中的移动管理 模式、所述移动终端所签约的移动管理模式、所述数据网网关支持的移动管 理模式的能力及其自身支持的移动管理模式的能力决定所选择的移动管理 模式, 并将选定的移动管理模式放在配置选项中发送给所述移动终端。
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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 |
| CN200710110788.1 | 2007-06-18 |
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| PCT/CN2008/000289 Ceased WO2008154789A1 (en) | 2007-06-18 | 2008-02-03 | A method of selecting mobile management mode in wireless network |
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| WO (1) | WO2008154789A1 (zh) |
Cited By (2)
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| CN101909337A (zh) * | 2009-06-04 | 2010-12-08 | 中兴通讯股份有限公司 | 基于切换功能的信息传递方法 |
| CN112437467A (zh) * | 2020-10-23 | 2021-03-02 | 中国人民解放军61062部队 | 一种无家乡代理的自组网网络隧道通信方法 |
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| CN101772119A (zh) * | 2009-01-06 | 2010-07-07 | 华为技术有限公司 | 切换方法、设备和系统 |
| CN101959177B (zh) * | 2009-07-17 | 2013-09-25 | 华为终端有限公司 | 从非WiFi网络向WiFi网络切换的处理方法及设备 |
| CN101990313B (zh) * | 2009-08-06 | 2014-01-01 | 中兴通讯股份有限公司 | 实现本地ip访问控制的方法、通知方法及系统 |
| CN101998364B (zh) * | 2009-08-21 | 2014-12-10 | 中兴通讯股份有限公司 | 一种对本地网际协议访问连接实施管理的方法及系统 |
| CN102056143A (zh) * | 2009-11-03 | 2011-05-11 | 中兴通讯股份有限公司 | 本地ip访问连接的管理方法 |
| CN107920377A (zh) * | 2016-10-09 | 2018-04-17 | 中国移动通信有限公司研究院 | 移动和连接状态转移机制处理方法及装置 |
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| CN101330719B (zh) | 2011-08-10 |
| CN101330719A (zh) | 2008-12-24 |
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