WO2010108430A1 - 一种分配前缀的方法、网络系统和本地移动锚点 - Google Patents

一种分配前缀的方法、网络系统和本地移动锚点 Download PDF

Info

Publication number
WO2010108430A1
WO2010108430A1 PCT/CN2010/071237 CN2010071237W WO2010108430A1 WO 2010108430 A1 WO2010108430 A1 WO 2010108430A1 CN 2010071237 W CN2010071237 W CN 2010071237W WO 2010108430 A1 WO2010108430 A1 WO 2010108430A1
Authority
WO
WIPO (PCT)
Prior art keywords
prefix
interface
home network
registration request
service type
Prior art date
Application number
PCT/CN2010/071237
Other languages
English (en)
French (fr)
Inventor
王云贵
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP10755430.5A priority Critical patent/EP2387284B1/en
Publication of WO2010108430A1 publication Critical patent/WO2010108430A1/zh
Priority to US13/198,496 priority patent/US9055551B2/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W60/00Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/005Multiple registrations, e.g. multihoming
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/14Reselecting a network or an air interface
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/26Network addressing or numbering for mobility support
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W80/00Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/04Network layer protocols, e.g. mobile IP [Internet Protocol]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02Terminal devices
    • H04W88/06Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Definitions

  • AAA Authentication Authorization Accounting: Provides access authentication and authorization for the startup process of the mobile node access network.
  • the AAA server coexists with the home subscription server (HSS) that stores the MN subscription information. If separated, the AAA server can communicate with the HSS to obtain the subscription information of the MN.
  • HSS home subscription server
  • Mobile node MN peer node CN is a communication node for a pair of end-to-end service applications, corresponding to network devices such as terminals or servers.
  • the Mobile Access Gateway (MAG) and the Local Mobile Anchor (LMA) are the basic network elements of the PMIPv6 system. Generally, the MAG and the LMA are located on the access gateway and the core network gateway respectively.
  • the basic mechanism of PMIPv6 work is: After the MN is attached to the network where the MAG is located, the MAG replaces the MN to complete the registration, simulates the home link, and announces the home network prefix (HNP, Home Network Prefix) to the MN, so that MN thinks that he is always at home. On the link, the MN does not need to support mobility management.
  • HNP Home Network Prefix
  • S101 the MN is attached to the network where the MAG is located;
  • S102 the MAG sends a first access request to the AAA server to the AAA server;
  • S103 the AAA server returns the first access response;
  • the service configuration information carried in the access response that is, Service information (including service type, service QoS, etc.) and authorization information (key material allocated for MN), etc.;
  • S104 MAG sends a registration message to the LMA instead of the MN, that is, a Proxy Binding Update (PBU) message.
  • PBU Proxy Binding Update
  • S105 the LMA sends a second access request to the AAA server to the AAA server;
  • S106 the AAA server returns a second access response; wherein the steps S105, S106 are optional.
  • the LMA allocates a HNP to the MN according to the received PBU; and establishes a Binding Cache Entry (BCE) for the HNP and the proxy care-of address (PCoA, Proxy-Care of Address, which is generally the IP address of the MAG).
  • the binding entry includes a correspondence relationship between the MN identity, the HNP, the PCoA, and the like, and the proxy sends a neighbor advertisement, and the link layer address corresponding to the HNP assigned to the MN is declared as the link layer address of the LMA itself;
  • the LMA replies to the MAG with a Proxy Binding Acknowledge (PBA) message with HNP information assigned to the MN.
  • PBA Proxy Binding Acknowledge
  • the MAG saves the HNP information, and then sends a route advertisement with the HNP to the MN (RA, Route) Advertisement) message; S110, after the MN learns, generates a home address according to the HNP.
  • the HNP allocated by the LMA to the MN supports the exclusive prefix model, that is, the LMA is assigned to each unique HNP, and any two MNs have different HNPs. Further, if a MN Multiple Interfaces (IF, Interface) Accessing the network through different access technology types and connecting to the LMA, the LMA assigns different HNPs to multiple interfaces.
  • IF MN Multiple Interfaces
  • a shared prefix that is, multiple MNs have the same HNP, or multiple IFs of the MN have the same HNP, but currently PMIPv6 and MN do not support shared prefixes.
  • the multi-interface MN has more requirements for some service applications, such as multi-interface MN services need to pass through the MN.
  • Multiple IFs are connected to the network to obtain more bandwidth, or the services of the multi-interface MN need to be switched between different IFs to ensure load balancing, etc.; wherein, two or more interfaces of the multi-interface MN use the same prefix (That is, the shared prefix) guarantees the continuity of the business/session in these requirements.
  • the embodiment of the invention provides a method for assigning a prefix, a network system and a local mobility anchor point, so as to solve the problem that the shared prefix cannot be allocated to the multi-interface mobile node in the existing system.
  • the embodiment of the present invention provides a method for prefix allocation, including: receiving a registration request of a second interface of a mobile node MN sent by a mobile access gateway; acquiring, according to the registration request, a first assigned to the MN a first home network prefix of the interface; assigning a first home network prefix shared with the first interface to the second interface.
  • the embodiment of the present invention provides a network system, including: a mobile access gateway, configured to send a registration request of a second interface of the mobile node MN to a local mobility anchor; a local mobility anchor, configured to move according to the And obtaining, by the access gateway, a registration request, acquiring a first home network prefix that has been allocated to the first interface of the MN; and assigning a first home network prefix shared with the first interface to the second interface.
  • the embodiment of the present invention provides a local mobility anchor point, including: a receiving module, configured to receive a registration request of a second interface of a mobile node MN sent by a mobile access gateway MAG; a prefix obtaining module, configured to Receiving a registration request received by the module, acquiring a first home network prefix that has been allocated to the first interface of the MN; and an allocation module, configured to allocate, by the prefix obtaining module, the first shared with the first interface The home network prefix is given to the second interface.
  • the local mobility anchor after the local mobility anchor receives the registration request of the second interface of the mobile node sent by the mobile access gateway, the local mobility anchor acquires the first interface that has been allocated to the mobile node according to the registration request.
  • the first home network prefix, and the first home network prefix is assigned to the second interface of the mobile node.
  • the embodiment of the present invention implements assigning a shared prefix to a multi-interface mobile node, and further enables the multi-interface mobile node to acquire more bandwidth for the same service that owns the shared prefix, or implement switching between services with interfaces with shared prefixes, Load balancing and business/session continuity are guaranteed.
  • FIG. 1 is a schematic diagram of a system architecture of a PMIPv6 in the prior art
  • FIG. 2 is a schematic diagram of a signaling flow of a HNP allocated by a PMIPv6 system in the prior art
  • FIG. 3 is a schematic flowchart of an embodiment of a method for allocating a prefix according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of an extended home network prefix option according to an embodiment of the present invention
  • FIG. 5a is a schematic diagram of an extended routing request according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of an extended home network prefix option according to an embodiment of the present invention
  • FIG. 5a is a schematic diagram of an extended routing request according to an embodiment of the present invention
  • FIG. 5a is a schematic diagram of an extended routing request according to an embodiment of the present invention.
  • FIG. 5b is a schematic diagram of an extended Internet Control Information Protocol mobile prefix request according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of a prefix information option according to an embodiment of the present invention
  • FIG. 7 is a schematic diagram of a signaling flow of an embodiment of a method for allocating a prefix according to an embodiment of the present invention.
  • FIG. 8 is a structural block diagram of an embodiment of a network system according to an embodiment of the present invention.
  • FIG. 9 is a structural block diagram of a local mobility anchor point according to an embodiment of the present invention.
  • FIG. 10 is a structural block diagram of a multi-interface mobile node according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram showing the relationship between a management module, a service/application module module, an internet protocol module, and an interface on a multi-interface mobile node according to an embodiment of the present invention
  • FIG. 12 is a structural block diagram of a mobile access gateway according to an embodiment of the present invention.
  • the embodiments of the present invention will be further described in detail with reference to the drawings and specific embodiments.
  • the premise of the method in the embodiment of the present invention is: the first home network prefix HNP1 has been assigned to the first interface of the MN.
  • the process of assigning HNP1 to IF1 is the same as the process of assigning HNP to existing PMIPv6 systems.
  • the embodiment of the present invention provides a first embodiment of the method for allocating a prefix. After the second interface IF2 of the MN is attached to the network where the mobile access gateway MAG is located, as shown in FIG. 3, the method includes:
  • S301 Receive a registration request of the second interface IF2 of the mobile node MN sent by the MAG.
  • the MAG After the IF2 of the MN is attached to the network where the MAG is located, the MAG sends a registration request to the LMA instead of the IF2.
  • the registration request refers to the proxy binding update PBU message, which may include the identifier of the MN (such as the network access identifier NAI), and is bound to the prefix to be applied.
  • the fixed PCoA, and other information may further include information such as whether the MN supports the shared prefix, the type of service carried by the IF2, and the like.
  • an indication S flag supporting the shared prefix is added in the extended home network prefix option (as shown in FIG.
  • the embodiment of the present invention adds the indication information of the MN to support the shared prefix in the extended registration message to indicate whether the shared prefix model is supported.
  • the LMA provided by the embodiment of the present invention has two major types of methods for obtaining HNP 1:
  • the first type the registration request received by the LMA from the MAG carries information to assist in obtaining HNP1;
  • the second category The registration request received by the LMA from the MAG does not contain information to assist in obtaining HNP1.
  • the method of the embodiment of the present invention provides three types of information for assisting in acquiring HNP1 in the registration request: the registration request carries the first home network prefix HNP1; or at least the prefix list of the HNP1; Or the type of service carried by the second interface IF2.
  • the LMA acquiring the HNP1 specifically includes:
  • the LMA obtains the HNP1 from the registration request.
  • the HNP1 carried in the registration request is from a link layer message or a network layer message sent by the MN through the IF2 received by the MAG.
  • the MN sends HNP1 information to the MAG through the IF2.
  • the L3 message is extended on the existing L3 message or a new L3 message is defined.
  • the L3 message includes an extended option to carry HNP1; and the L3 message may include a route request message or an Internet Control Message Protocol (ICMP) mobile prefix request message.
  • ICMP Internet Control Message Protocol
  • the following is an extension of the existing routing request and the ICMP mobile prefix request message, as shown in FIG. 5a and FIG. 5b: Extending an S flag in the routing request and the ICMP message to indicate that the message will apply for a shared prefix;
  • the extended message may contain a prefix information option, in this embodiment, the prefix HNP1 of IF1 that has been assigned to the MN.
  • the prefix information option specifically contains (as shown in Figure 6): prefix information option type, option length, prefix length, online (on-link) flag L, auto-configuration flag A, optional routing address flag R, pre- Retention 1, valid life cycle, preferred life cycle, reserved bit 2 and prefix.
  • the L3 message sent by the multi-interface MN to the MAG is further provided with an IF2 bearer service type option for carrying the service type carried by the IF2.
  • the process in which the MN sends an L3 message to the MAG to request a shared prefix may be performed independently, that is, in some scenarios, an interface of the MN may actively apply for a known home network prefix or IP address.
  • the link layer L2 message sent by the MN to the access point (such as the base station BS) through the IF2 carries HNP1 information, and the access point sends the information to the MAG.
  • the L2 message includes an extended option to carry HNP1.
  • the L2 message may include an initial service flow message or a request/response message of a pre-configured service flow.
  • the L2 message sent by the multi-interface to the MAG is further provided with a flag of the IF2 supporting the shared prefix, indicating that the MN has the capability of supporting the shared prefix.
  • the L2 message sent by the multi-interface MN to the MAG is also provided with an IF2 bearer service type option, and is used to carry the service type carried by the IF2.
  • the LMA matches the prefix list with a prefix in the locally stored binding entry of the MN to obtain the same HNP1.
  • the local refers to the LMA.
  • the LMA receives the registration request.
  • the HNP1 can be obtained directly without matching.
  • a service type is served by a prefix (shared prefix) of one or more interfaces.
  • the service configuration information in the prior art is stored in the AAA server, and includes service information and authorization information related to the subscription of the user and the operator, where the service information includes a service type, a service QoS, and the like, and the authorization information includes a secret assigned to the MN. Key, billing index, etc.
  • Remote user dial-in authentication service can be used between the MAG and the AAA server.
  • the first access response is an access receiving Access Accept message
  • the first access request is a Radius access request Accept Request message.
  • the service configuration information in the embodiment of the present invention is based on the prior art, and further includes interface information corresponding to the service information, where the interface information includes a prefix list corresponding to the interface, and a corresponding relationship with the service of the prefix list service. .
  • the service configuration information further includes indication information about whether the MN supports the shared prefix.
  • the MAG receives the first access response carrying the IF2 service configuration information from the AAA server, optionally in the service configuration information. It also includes information on whether to support shared prefixes.
  • the prefix list is extracted by the MAG from the first access response of the AAA server carrying the service configuration information of the IF2 or the IF2.
  • the first access response returned by the AAA server carries the service configuration information; when the MAG sends the first access request to the AAA server
  • the MN identifier and the IF2 identifier are used, the first access response returned by the AAA server carries only the service configuration information of the IF2.
  • the LMA performs a first authentication process and/or a second authentication process to obtain the service configuration information of the MN.
  • the prefix information list is:
  • the MAG receives a first access response carrying the service configuration information of the MN from the AAA server, and extracts a prefix list from the service configuration information. After receiving the registration request, the LMA matches the HNP1 corresponding to the service type of the service type carried by the IF2 from the prefix information list.
  • the MAG further sends a request message (based on the Diameter or Radius protocol) to the AAA server, and sends the MAG information for the IF2 service to the AAA server.
  • a request message (based on the Diameter or Radius protocol) to the AAA server, and sends the MAG information for the IF2 service to the AAA server.
  • the LMA matches the service type carried by the IF2 with the service type in the binding entry of the MN stored locally, to obtain the same service.
  • Type corresponds to HNP1.
  • the LMA matches the HNP1 of the IF2 bearer service type of all the binding entries that are stored by the LMA; the binding entry may include the MN identifier and the interface.
  • the service type of the IF2 carried in the registration request may be the first access response that is sent by the AAA server to the MAG and carries the service configuration information of the IF2, and the MAG extracts the service configuration information.
  • the method of the embodiment of the present invention provides two ways for the LMA to obtain the HNP1:
  • the service types in the binding entries of the MN are matched to obtain the HNP1 corresponding to the same service type.
  • the LMA sends a second access request with the MN identity, or the MN identity and the IF2 identity to the AAA server according to the MN identity or the IF2 identity carried in the registration request.
  • the service configuration information is based on the existing technology, and further includes interface information corresponding to the service information, where the interface information includes a prefix list corresponding to the interface. If the interface identifier of the MN is included in the first access request, the service configuration information corresponding to the interface of the MN is returned here. If the interface identifier of the MN is not included, all the service configuration information of the MN is returned. Preferably, the service configuration information further includes indication information of whether the MN supports the shared prefix.
  • the LMA further includes sending a message that the LMA serves the IF2 of the MN to the AAA server.
  • the LMA extracts, from the AAA server, the second access response that carries the service configuration information of the MN or the IF2, the prefix list that includes at least the HNP1, and the LMA stores the prefix list and the locally stored
  • the prefixes in the binding entries of the MN are matched to obtain the same HNP1.
  • the prefix list of the IF2 extracted by the LMA from the service configuration information of the IF2 has only one prefix, that is, only the HNP1 is included, and according to the shared prefix indication, the LMA does not need to perform matching, and the HNP1 can be directly obtained.
  • the LMA When the LMA obtains the HNP1, it assigns HNP1 shared with IF1 for IF2.
  • the LMA creates a binding entry for the IF2, and saves the HNP1 and its life cycle, the service information corresponding to the HNP1, and whether the shared prefix is supported in the binding entry.
  • the binding entry also stores the identifier of the MN, the interface information of the MN (interface identifier, access type, and other interface related information), PCoA, and the like.
  • the LMA further includes determining, according to the indication information that the MN supports the shared prefix carried in the registration request, whether the MN supports the shared prefix, and if the MN supports the shared prefix, assigning the HNP1 to the IF2.
  • the indication information of the MN that supports the shared prefix carried in the registration request includes:
  • the MN supports the shared prefix indication information in the L2 message or the L3 message sent by the MN through the IF2; the L2 message or the L3 message carries the MN support shared prefix indication information by using the extended flag bit; or The MN supports the indication information of the shared prefix that is extracted by the MN from the first access response that carries the service configuration information returned by the authentication and authorization charging AAA server.
  • the LMA may further determine whether the service type carried by the IF2 and the service type corresponding to the HNP1 are the same; if the service type carried by the IF2 is the same as the service type corresponding to the HNP1, the HNP1 is allocated to the IF2. .
  • the prefix list of the new interface in the service configuration information returned from the AAA server may include multiple The same prefix as other interfaces.
  • the LMA receives the prefix list and matches the binding entry of the mobile node stored by itself, the LMA will match one or more shared prefixes, and the LMA allocates the matched shared prefixes to the new interface to achieve the present invention.
  • An embodiment is the purpose of assigning a shared prefix to a multi-interface mobile node.
  • the LMA determines whether the MN supports the shared prefix, and/or matches the service type carried by the new interface and other interfaces of the mobile node that are locally stored.
  • the type of service determines which shared prefixes should be assigned to the new interface.
  • the specific process of the method in this embodiment, as shown in FIG. 7, includes:
  • Li's IF2 is attached to the network where MAG2 is located.
  • MAG2 sends a registration request to the LMA.
  • the (initial) registration request sent by the MAG2 to the LMA may include the identity of the MN (such as the network access identifier NAI), the PCoA bound to the prefix to be applied, and the type of access technology of the IF2 that earns N information, and the like.
  • the HNP1 to be applied by the IF2, or at least the prefix list of the HNP1, or the type of service carried by the second interface IF2, and the indication information of whether the shared prefix capability is supported may be further included.
  • the LMA acquires HNP1 that has been assigned to IF1.
  • the LMA obtains the HNP1 that has been assigned to IF1, which can be done in the following ways:
  • the LMA obtains the HNP1 from the registration request;
  • the HNP1 carried in the registration request is from the L2 message or the L3 message sent by the MAG through the IF2;
  • the LMA matches the prefix list with the prefix in the binding entry of the LM stored by the LMA to obtain the same HNP1;
  • the MAG extracts from the first access response that is returned by the AAA server and carries the service configuration information of the IF2;
  • the LMA matches the service type carried by the IF2 with the service type in the binding entry of the MN stored by the LMA, and obtains the HNP1 corresponding to the same service type;
  • the LMA returns the service type carried by the IF2 from the second access response that is sent by the AAA server and carries the service configuration information of the MN or the IF2, and the service type of the IF2 bearer and the service in the binding entry stored by the LMA.
  • the type is matched to obtain the HNP1 corresponding to the same service type.
  • the LMA allocates HNP1 to the IF2 of the MN.
  • the LMA is further included to determine whether the MN supports the shared prefix. If the MN supports the shared prefix, step S704 is performed.
  • the LMA further includes the LMA determining the type of service carried by the IF2 and
  • step S704 is performed.
  • Whether the MN supports the shared prefix is determined according to the indication information that the MN supports the shared prefix carried in the registration request, and the indication information of the MN that supports the shared prefix carried in the registration request may include:
  • the MN supports the shared prefix indication information by the MN carried by the IF2 or the MN carried in the L3 message;
  • the MN supports the indication information of the shared prefix from the first access response that is returned by the AAA server and carries the service configuration information.
  • the method further includes: sending, by the LMA, the message that the LMA serves the IF2 to the AAA server.
  • the LMA allocates a new home network prefix HNP2 to the IF2 of the MN, or generates a failure code indicating that the sharing is not allowed.
  • the method further includes: S705:
  • the LMA carries the HNP1 allocated for the IF2 to the MAG2 in the registration response.
  • the registration response returned by the LMA refers to a proxy binding confirmation PBA message.
  • the MAG2 further includes establishing a BCE2 for the IF2, where the BCE2 may include: a correspondence between the MN identifier, the IF2 identifier, the PCoA2, and the corresponding LMA.
  • the method further includes: S706: MAG2 returns the HNP1 to the MN.
  • MAG2 If the LMA allocates ⁇ to IF2, MAG2 returns HNP1 to ⁇ through the route advertisement after receiving the registration response containing HNP1 returned by the LMA.
  • the flag of the shared prefix is included in the route advertisement extension message.
  • the method further includes: S707: The MN configures the same home address as the IF1 for the IF2 according to the HNP1.
  • the IF2 of the MN performs IP address configuration based on the shared prefix to perform subsequent service switching or service usage.
  • the IP address configured by the MN on IF2 is the same as or different from the IP address configured on IF1. If the configured IP address is the same, the IP address can be directly requested when acquiring HNP1.
  • the method of the embodiment of the present invention When receiving the registration request of the IF of the MN, the method of the embodiment of the present invention acquires the HNP1 of the IF1 allocated to the MN through the LMA, and allocates the HNP1 to the IF2.
  • the method of this embodiment implements assigning a shared prefix to a multi-interface mobile node, and further enables the multi-interface mobile node to acquire more bandwidth for the same service having the shared prefix, or to implement switching between services with interfaces with shared prefixes. , to ensure load balancing and business / session continuity.
  • the embodiment of the invention provides a network system, as shown in FIG. 8, including a mobile access gateway 110 and a local mobile anchor point 120.
  • the mobile access gateway 110 is configured to send a registration request of the MN of the MN to the local mobility anchor 120.
  • the local mobility anchor 120 is configured to acquire HNP1 of the IF1 allocated to the MN according to the registration request sent by the mobile access gateway 110, and allocate the HNP1 shared with the IF1 for the IF2.
  • the mobile access gateway 110 is further configured to: obtain the HNP1, or obtain a prefix list including at least the HNP1, or obtain a service type carried by the IF2; and use the HNP1 or prefix list or IF2 The type of service carried is carried in the registration request.
  • the acquiring the HNP1 of the IF1 that has been allocated to the MN is: when the registration request carries the HNP1, the local mobility anchor 120 acquires the HNP1 from the registration request; or when Carrying in the registration request
  • the local mobility anchor 120 matches the prefix list with the prefix in the binding entry of the MN stored by the local mobility anchor 120 to obtain the same HNP1;
  • the registration request carries the service type of the IF2
  • the local mobility anchor 120 binds the service type of the IF2 and the MN's binding entry stored by the local mobility anchor 120.
  • the service types in the match are matched to obtain the HNP1 corresponding to the same service type.
  • the acquiring the HNP1 of the IF1 that has been allocated to the MN is: the second access that the local mobility anchor 120 returns from the authentication authorization charging server and carries the service configuration information of the MN or IF2.
  • the service type of the IF2 bearer is extracted, and the service type carried by the IF2 is matched with the service type in the binding entry of the MN stored by the local mobility anchor 120, and the HNP1 corresponding to the same service type is obtained.
  • the acquiring the HNP1 of the IF1 that has been allocated to the MN is: the second access that the local mobility anchor 120 returns from the authentication authorization charging server and carries the service configuration information of the MN or IF2.
  • the prefix list including at least the HNP1 is extracted, and the prefix list is matched with the prefix in the binding entry of the MN stored by the local mobility anchor 120 to obtain the same HNP1.
  • the mobile access gateway 110 is further configured to: obtain the indication information that the MN supports the shared prefix, and carry the indication information that the MN supports the shared prefix in the registration request.
  • the local mobility anchor 120 is further configured to: before the HNP1 is allocated to the IF2, determine, according to the indication information that the MN supports the shared prefix carried in the registration request sent by the mobile access gateway 110, Whether to support shared prefixes.
  • the network system 10 further includes: an authentication authorization charging server 130, configured to perform first access authentication on the mobile access gateway 110 and return a first access response; perform local mobility anchor 120 The second access authentication returns a second access response; stores the service configuration information of the MN.
  • an authentication authorization charging server 130 configured to perform first access authentication on the mobile access gateway 110 and return a first access response
  • perform local mobility anchor 120 The second access authentication returns a second access response
  • the network system of this embodiment When receiving the registration request of the IF of the MN, the network system of this embodiment acquires HNP1 of the IF1 allocated to the MN through the LMA, and allocates HNP1 for the IF2.
  • the network system of this embodiment implements assigning a shared prefix to the multi-interface mobile node, and further enables the multi-interface mobile node to acquire more bandwidth for the same service that owns the shared prefix, or implements services between interfaces having shared prefixes. Switching ensures load balancing and business/session continuity.
  • An embodiment of the present invention provides a local mobility anchor point, as shown in FIG. 9, including:
  • the receiving module 1201 is configured to receive a registration request of the IF2 of the MN sent by the mobile access gateway MAG.
  • the prefix obtaining module 1202 is configured to acquire, according to the registration request received by the receiving module 1201, the HNP1 of the IF1 that has been allocated to the MN;
  • the allocating module 1203 is configured to allocate, to the IF2, the HNP1 that is acquired by the prefix obtaining module 1202 and shared with the IF1.
  • the prefix obtaining module 1202 includes one unit or a combination of several units:
  • a first unit configured to: when the registration request carries HNP1, obtain the HNP1 from the registration request; and the second unit is configured to: when the registration request carries a prefix list that includes at least the HNP1 Matching the prefix list with a prefix in a binding entry of the MN stored by the local mobility anchor 120 to obtain the same
  • a third unit configured to: when the registration request carries the service type of the IF2, the service type carried by the IF2 and the binding entry of the MN stored by the local mobility anchor 120 The service type is matched to obtain the HNP1 corresponding to the same service type;
  • the fourth unit is configured to extract, from the AAA server, the second access response that carries the service configuration information of the IF2, the service type carried by the IF2, and the service type carried by the IF2 and the local
  • the service type in the binding entry of the MN stored by the mobile anchor 120 is matched to obtain the HNP1 corresponding to the same service type;
  • a fifth unit configured to extract, from the AAA server, the second access response that carries the service configuration information of the MN or the IF2, the prefix list that includes the HNP1, and the prefix list and the local The prefix in the binding entry of the MN stored by the mobility anchor 120 is matched to obtain the same HNP1.
  • the local mobility anchor 120 further includes:
  • the local mobility anchor point further includes a support shared prefix information obtaining module 1204, configured to obtain indication information that the MN supports the shared prefix carried in the registration request;
  • the allocating module 1203 is further configured to: determine, according to the indication information that the MN supports the shared prefix that is carried in the registration request, whether the MN shares a prefix.
  • the local mobility anchor of this embodiment obtains the HNP1 of the IF1 that has been allocated to the MN after receiving the registration request of the IF2 of the MN, and allocates the HNP1 for the IF2, thereby realizing the allocation of the shared prefix for the multi-interface mobile node.
  • the embodiment of the present invention provides a multi-interface mobile node. As shown in FIG. 10, the method includes: a sending module 210, a receiving module 220, and an address generating module 230.
  • the sending module 210 is configured to send, by the IF2, the link carrying the HNP1 to the MAG after the IF1 of the MN has been allocated to the HNP1, and the IF2 of the MN is attached to the network where the mobile access gateway MAG is located.
  • the receiving module 220 is configured to receive a home network prefix returned by the MAG.
  • the address generation module 230 is configured to generate a home address according to the home network prefix received by the receiving module 220.
  • the mobile node 20 further includes: a management module 240, configured to manage, by the sending module 210, a prefix shared by the interface Applying, and managing the address generation module 230 generates a shared home address based on the shared prefix; the control service switches over a plurality of interfaces having shared home addresses.
  • the mobile node 20 further includes: a service/application module module 250, an internet protocol module 260,
  • the service/application module module 250 is used to provide a service/application to the user.
  • the Internet Protocol Module 260 is configured to provide functions such as TCP/IP or UDP/IP for the service/application of the service/application module module 250.
  • the interface 270 is configured to connect to the same/different access network through the internet protocol module 260.
  • the relationship between the management module 240 and the service/application module module 250, the internet protocol module 260, and the interface 270 is as shown in FIG. 11; the management module 240 will determine whether the service is connected to the network through multiple interfaces 270 according to the policy check, or The service switches from one interface 270 to another interface 270, or other operations; it is also determined whether interface 270 needs to assign a shared prefix to some other interface 270.
  • the policy check refers to the policy information between the service/application module 250 and the interface 270 managed by the management module 240.
  • the policy information may include: a service quality QoS required by the service and a link QoS corresponding to the interface 270 (eg, connected to The bandwidth and delay obtained by the 3G and WiFi interfaces are different.
  • the service charges are related to the cost of the link corresponding to the interface 270 (for example, the same service will generate different charges through the 3G and WiFi interfaces); or
  • the management module 240 manages and/or senses state information of the interface 270. For example, when an interface 270 is overloaded or the interface 270 loses connectivity (eg, the terminal moves outside of the network service area), the management module 240 can service/ The application switches from one interface 270 to another interface 270.
  • the multi-interface mobile node in this embodiment obtains the home network prefix of an interface that has been assigned to the MN on the network side by using the management of the interface prefix application and the use, and assigns the prefix to the subsequently attached interface.
  • the mobile node can generate a shared home address according to the shared prefix, enable the service of the multi-interface MN to connect to the network through multiple interfaces of the MN to obtain more bandwidth, and enable the service of the multi-interface mobile node to switch between different interfaces. Load balancing and business/session continuity are guaranteed.
  • the embodiment of the present invention provides a mobile access gateway. As shown in FIG.
  • the method includes: a prefix obtaining module 1101, a registration request generating module 1102, a registration request sending module 1103, and a prefix returning module 1104.
  • the prefix obtaining module 1101 is configured to acquire the HNP1 after the IF1 of the MN has been allocated to the HNP1, and the IF2 of the MN is attached to the network where the mobile access gateway 110 is located.
  • the registration request generation module 1102 is configured to generate a registration request that carries the HNP1 acquired by the prefix acquisition module 1101.
  • the registration request sending module 1103 is configured to send the registration request to the LMA.
  • the prefix obtaining module 1101 includes: a first acquiring unit, configured to: when the registration request carries HNP1, obtain the HNP1 from the registration request; and the HNP1 carried in the registration request is from the The link layer message or network layer message sent by the MN through the IF2 received by the mobile access gateway 110.
  • a first acquiring unit configured to: when the registration request carries HNP1, obtain the HNP1 from the registration request; and the HNP1 carried in the registration request is from the The link layer message or network layer message sent by the MN through the IF2 received by the mobile access gateway 110.
  • the prefix obtaining module 1101 includes: a second acquiring unit, configured to bind the prefix list to the MN stored by the LMA when the registration request carries a prefix list including at least the HNP1 The prefix in the entry is matched to obtain the same HNP1; the prefix list is extracted by the first access response of the MAG from the AAA server carrying the service configuration information of the MN or IF2.
  • the prefix obtaining module 1101 includes: a third acquiring unit, configured to: when the registration request carries the service type carried by the IF2, the service type carried by the IF2 and the MN stored by the LMA The service types in the binding entries are matched to obtain the HNP1 corresponding to the same service type.
  • the mobile access gateway 110 further includes: a prefix returning module 1104, configured to return, to the MN, a home network prefix allocated by the LMA for the IF2.
  • a prefix returning module 1104 configured to return, to the MN, a home network prefix allocated by the LMA for the IF2.
  • the mobile access gateway of this embodiment acquires the HNP1 of the IF1 that has been allocated to the MN after the IF2 of the MN is attached to the network where the MAG is located, and sends a registration request carrying the HNP1 to the LMA, and the IF2 of the MN is After the home network prefix is assigned, the prefix is returned to the MN, and the shared prefix is allocated to the multi-interface mobile node.
  • a mobile node has one or more interfaces (such as IF1) assigned multiple prefixes, and a new interface (such as IF2) is assigned a plurality of prefixes shared with other interfaces
  • IF1 interfaces
  • IF2 new interface
  • the local mobile anchor point also works.
  • the embodiment of the network system, the local mobility anchor point, the multi-interface mobile node, and the mobile access gateway in the embodiment of the present invention are similar in content and method parts, so the description is relatively simple, and the similarities should be referred to each other.
  • the method includes the following steps: receiving a registration request of the second interface IF2 of the mobile node MN sent by the mobile access gateway; acquiring, according to the registration request, the first home network prefix that has been allocated to the MN first interface IF1 HNP1; allocates HNP1 shared with the IF1 for the IF2.
  • the storage medium is, for example, a ROM/RAM, a magnetic disk, an optical disk, or the like.

Landscapes

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

Description

. . 、
动锚点
本申请要求于 2009年 3月 26日提交中国专利局、 申请号为 200910119782. X、发明 名称为 "一种分配前缀的方法、 网络系统和本地移动锚点" 的中国专利申请的优先权, 其全部内容通过引用结合在本申请中。 技术领域 本发明涉及移动通信领域, 尤其是涉及一种分配前缀的方法、 网络系统和本地移动 锚点。 背景技术 代理移动 IP (ΡΜΙΡ, Proxy Mobile IP) 在微波存取全球互通 (WiMAX, Worldwide
Interoperability for Microwave Access ) 网络、 第三代合作伙伴项目 ( 3GPP, 3rd Generation Partnership Project ) 系统架构演进 ( SAE, System Architecture Evolution) 网络、 以及 3GPP网络与 WiMAX网络进行互联互通的网络系统中具有比较广 泛的应用。 一般的, 如图 1所示, PMIPV6系统的基本构架为:
鉴权授权计费 (AAA, Authentication Authorization Accounting) 月艮务器: 为移 动节点 (丽, Mobile Node ) 接入网络的启动过程提供接入认证、 授权。 一般的, 如在 3GPP SAE网络中, AAA服务器与存储 MN签约信息的家乡签约服务器 (HSS) 共存, 如果 分离, AAA服务器可与 HSS通信, 获取丽的签约信息等。
移动节点 MN、 对端节点 CN是一对端到端业务应用的通讯节点, 对应终端或服务器 等网络设备。
移动接入网关(MAG, Mobile Access Gateway)和本地移动锚点(LMA, Local Mobile Anchor)是 PMIPv6系统的基本网元, 一般的, MAG与 LMA分别位于接入网关和核心网网 关上。
PMIPv6工作的基本机制是: 当丽附着到 MAG所在的网络后, MAG代替 MN完成注册 后, 模拟家乡链路, 向 MN通告家乡网络前缀 (HNP, Home Network Prefix), 使 MN以 为自己始终在家乡链路上, 从而 MN不需要支持移动性管理。
PMIPv6系统分配 HNP的一般过程如图 2所示:
S101 , 丽附着到 MAG所在网络; S102, MAG向 AAA服务器发出对丽的第一接入请 求; S103, AAA服务器返回第一接入响应; 接入响应中携带有 的业务配置信息, 也即 业务信息(包括业务类型,业务 QoS等)和授权信息(为丽分配的密钥材料)等; S104, MAG代替 MN向 LMA发送注册报文, 即代理绑定更新 (PBU, Proxy Binding Update) 消 息; S105, LMA向 AAA服务器发出对丽的第二接入请求; S106, AAA服务器返回第二接 入响应; 其中步骤 S105, S106为可选的。 S107, LMA根据接收的 PBU, 为 MN分配 HNP; 建立关于该 HNP和代理转交地址 (PCoA, Proxy-Care of Address, 一般就是 MAG的 IP 地址) 的绑定缓存条目 (BCE, Binding Cache Entry), 该绑定条目包括 MN标识、 HNP、 PCoA等的对应关系, 并代理丽发送邻居公告, 公告中将该分配给丽的 HNP对应的链路 层地址声明为 LMA本身的链路层地址; S108, LMA向 MAG回复代理绑定确认(PBA, Proxy Binding Acknowledge) 消息, 其中带有分配给 MN的 HNP等信息; S109, MAG保存 HNP 信息, 然后向 MN发送带有该 HNP的路由通告 (RA, Route Advertisement)消息; S110, MN获知后, 根据该 HNP生成家乡地址。
在上述 PMIPv6规范的基本机制中, LMA分配给 MN的 HNP支持的是独占前缀模型, 也即 LMA分配给每个丽唯一的 HNP, 任意两个丽都有着不同的 HNP, 进一步的, 若一 个 MN有多个接口 (IF, Interface) 通过不同的接入技术类型接入网络并连接到 LMA, 则 LMA为丽的多个接口分配各自不同的 HNP。
与独占前缀模型对应的是共享前缀, 即多个 MN具有相同的 HNP,或 MN多个 IF具有 相同的 HNP, 但目前 PMIPv6和 MN还不支持共享前缀。
随着智能 MN支持多接口 (即每个 IF可以通过不同接入技术类型连接到网络)能力 的增强, 多接口 MN对一些业务应用产生了更多的需求,如多接口 MN的业务需要通过 MN 的多个 IF连接到网络以获得更多的带宽, 或者多接口 MN的业务需要在不同 IF之间切 换以保证负载均衡等; 其中, 多接口 MN的两个或多个接口使用相同的前缀 (即共享前 缀) 可以保证这些需求中的业务 /会话的连续性。
在实现本发明的过程中, 发明人发现现有技术中至少存在如下问题:
由于多接口 MN有多个接口, 现有系统无法确定哪些接口附着网络后需要分配共享 前缀; 进一步地, MN的某个接口上有一个或多个前缀, 现有系统无法确定哪一个前缀与 其他接口共享; 因此, 如何为多接口移动节点分配共享前缀成为亟待解决的问题。 发明内容 本发明实施例提供了一种分配前缀的方法、 网络系统和本地移动锚点, 以解决现有 系统中无法为多接口移动节点分配共享前缀的问题。
首先, 本发明实施例提供了一种前缀分配的方法, 包括: 接收移动接入网关发送的 移动节点 MN的第二接口的注册请求; 根据所述注册请求, 获取已分配给所述 MN第一接口 的第一家乡网络前缀; 分配与所述第一接口共享的第一家乡网络前缀给所述第二接口。
其次, 本发明实施例提供了一种网络系统, 包括: 移动接入网关, 用于向本地移动 锚点发送移动节点 MN的第二接口的注册请求; 本地移动锚点, 用于根据所述移动接入网 关发送的注册请求, 获取已分配给所述 MN第一接口的第一家乡网络前缀; 以及分配与所 述第一接口共享的第一家乡网络前缀给所述第二接口。
最后, 本发明实施例提供了一种本地移动锚点, 包括: 接收模块, 用于接收移动接 入网关 MAG发送的移动节点 MN的第二接口的注册请求; 前缀获取模块, 用于根据所述接 收模块接收到的注册请求, 获取已分配给所述 MN的第一接口的第一家乡网络前缀; 分配 模块,用于分配所述前缀获取模块获取到的与所述第一接口共享的第一家乡网络前缀给 所述第二接口。
本发明实施例在本地移动锚点收到移动接入网关发送的移动节点的第二接口的注 册请求后, 本地移动锚点根据所述注册请求, 获取已分配给所述移动节点的第一接口的 第一家乡网络前缀, 并为所述移动节点的第二接口分配第一家乡网络前缀。 本发明实施 例实现了为多接口移动节点分配共享前缀, 并进一步使多接口移动节点能够为拥有该共 享前缀的同一业务获取更多带宽, 或实现业务在有共享前缀的接口之间的切换, 保证了 负载均衡和业务 /会话的连续性。 附图说明 为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实施例或现有 技术描述中所需要使用的附图作简单地介绍, 显而易见地, 下面描述中的附图仅仅是本 发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动性的前提下, 还可以根据这些附图获得其他的附图。
图 1是现有技术中 PMIPv6的系统架构示意图;
图 2是现有技术中 PMIPv6系统分配 HNP的信令流程示意图;
图 3是本发明实施例的分配前缀的方法实施例的流程示意图;
图 4是本发明实施例的扩展的家乡网络前缀选项的示意图; 图 5a是本发明实施例的扩展的路由请求的示意图;
图 5b是本发明实施例的扩展的互联网控制信息协议移动前缀请求的示意图; 图 6是本发明实施例的前缀信息选项的示意图;
图 7是本发明实施例的分配前缀的方法实施例的信令流程示意图;
图 8是本发明实施例的网络系统实施例的结构框图;
图 9是本发明实施例的本地移动锚点的结构框图;
图 10是本发明实施例的多接口移动节点的结构框图;
图 11是本发明实施例的多接口移动节点上管理模块与业务 /应用模块模块、 网际协 议模块和接口之间的关系示意图;
图 12是本发明实施例的移动接入网关的结构框图。 具体实施方式 为使本发明实施例的上述目的、 特征和优点能够更加明显易懂, 下面结合附图和具 体实施方式对本发明实施例作进一步详细的说明。
本发明实施例方法的前提是: 第一家乡网络前缀 HNP1已经被分配给 MN的第一接口
IF1。 为 IF1分配 HNP1的流程和现有 PMIPv6系统分配 HNP的过程相同。
本发明实施例提供了一种分配前缀的方法的第一个实施例, 所述 MN的第二接口 IF2 附着到移动接入网关 MAG所在网络后, 如图 3所示, 包括:
5301 , 接收 MAG发送的移动节点 MN的第二接口 IF2的注册请求。
在 MN的 IF2附着到 MAG所在网络后, MAG代替所述 IF2向 LMA发送注册请求。
MAG向 LMA发送的 (初始)注册请求, 在本发明实施例中, 注册请求指的是代理绑定 更新 PBU消息, 可以包括 MN的标识(如网络接入标识 NAI ), 与要申请的前缀绑定的 PCoA, 以及其他信息 (如 MN的 IF2的接入技术类型等) , 还可以进一步包括 MN是否支持共享前 缀、 IF2承载的业务类型等信息。本发明实施例在扩展的家乡网络前缀选项(如图 4所示) 中增加了支持共享前缀的指示 S标志位, 以指示申请共享前缀, 可选的, 包含已获得的 HNP1信息, 如果不包含, 则前缀长度填为 0; 进一步, 本发明实施例在扩展的注册消息 中增加 MN支持共享前缀的指示信息, 以指示 是否支持共享前缀模型。
5302, 根据所述注册请求, 获取已分配给所述 MN的 IF1的 HNP1。
本发明实施例提供的 LMA获取 HNP 1的方式有两大类:
第一类: LMA从 MAG接收到的注册请求中携带有协助获取 HNP1的信息; 第二类: LMA从 MAG接收到的注册请求中不含有协助获取 HNP1的信息。
对于第一类, 本发明实施例的方法的在注册请求中提供三种协助获取 HNP1的信息: 所述注册请求携带有所述第一家乡网络前缀 HNP1 ; 或至少包含所述 HNP1的前缀列表; 或 所述第二接口 IF2承载的业务类型。
则 LMA获取所述 HNP1具体包括:
1 ) 当所述注册请求中携带有 HNP1时, LMA从该注册请求中获取所述 HNP1。
所述注册请求中携带的 HNP1来自于所述 MAG接收的所述 MN通过 IF2发送的链路层消 息或网络层消息。
其中, i ) MN通过 IF2向 MAG发送的 L3消息中带有 HNP1信息。 具体的, L3消息是在现 有 L3消息上扩展或者新定义一个 L3消息。
优选的, 所述 L3消息, 包含扩展的选项来携带 HNP1 ; 所述 L3消息可以包括路由请求 消息或互联网控制信息协议 (ICMP, Internet Control Message Protocol ) 移动前缀 请求消息。
下面以扩展现有的路由请求和 ICMP移动前缀请求消息来说明, 如图 5a和图 5b所示: 在路由请求、 ICMP消息中扩展一个 S标志位, 用于指示该消息将申请一个共享前缀; 该扩展消息可以包含前缀信息选项, 在本实施例中, 即为已分配给 MN的 IF1的前缀 HNP1。 前缀信息选项具体包含的内容有 (如图 6所示) : 前缀信息选项类型, 选项长度, 前缀 长度, 在线 (on-link) 标志 L、 自动配置标志 A、 可选的路由地址标志 R、 预留位 1、 有 效的生命周期、 首选的生命周期、 预留位 2和前缀。
可选的, 多接口 MN向 MAG发送的 L3消息中, 还带有 IF2承载业务类型的选项, 用于携 带 IF2承载的业务类型。
在本实施例中, MN向 MAG发送 L3消息请求共享前缀的过程, 可独立进行, 也即在某 些场景下, 丽的某个接口可通过这种方式主动申请一个已知的家乡网络前缀或 IP地址。
ii ) MN通过 IF2向接入点 (如基站 BS) 发送的链路层 L2消息中带有 HNP1信息, 接入 点将这些信息发送给 MAG。
优选的, 所述 L2消息, 包含扩展的选项来携带 HNP1。
在基于 802. 16/802. 16e无线技术的 WiMAX接入网络中, 优选的, 所述 L2消息可以包 括初始业务流消息或预配置业务流的请求 /应答消息。
可选的, 多接口丽向 MAG发送的 L2消息中, 还带有 IF2支持共享前缀的标志位, 表示 该 MN具有支持共享前缀的能力。 可选的, 多接口 MN向 MAG发送的 L2消息中, 还带有 IF2承载业务类型的选项, 用于携 带 IF2承载的业务类型。
2) 当所述注册请求中携带有至少包含所述 HNP1的前缀列表时, LMA将所述前缀列表 与本地存储的所述 MN的绑定条目中的前缀进行匹配, 获取相同的 HNP1。
本发明实施例中, 所述本地即指所述 LMA。
优选的, 当 MAG从 IF2的业务配置信息中提取出的所述 IF2的前缀列表只有一个前缀 时, 即只包含 HNP1 , 根据共享前缀指示, 则 LMA在接收到只携带有 HNP1的注册请求后, 不需再进行匹配, 可以直接获取该 HNP1。
本发明实施例中, 一种业务类型由一个或多个接口的一个前缀 (共享前缀) 服务。 现有技术中的业务配置信息存储在 AAA服务器中, 包括用户和运营商签约相关的业 务信息和授权信息等, 其中, 业务信息包括业务类型, 业务 QoS等, 而授权信息包括为 MN分配的密钥、 计费索引等。 MAG和 AAA服务器之间可以采用远端用户拨入鉴权服务
(Remote Authentication Dial in User Service, Radius) 或直径 (Diameter) 协议, 若采用 Radius协议, 则第一接入响应为接入接收 Access Accept消息, 第一接入请求为 Radius接入请求 Accept Request消息。
本发明实施例中的业务配置信息, 是在现有技术基础上, 还进一步包括业务信息对 应的接口信息, 其中, 接口信息中包含接口对应的前缀列表, 与前缀列表服务的业务的 对应联系等。 优选的, 在业务配置信息中还包括 MN是否支持共享前缀的指示信息。
在丽的 IF2附着到网络时, 通过 MAG向 AAA服务器进行第一认证的过程中, MAG从 AAA 服务器接收携带有 或 IF2业务配置信息的第一接入响应, 可选的, 在业务配置信息中 还包括 是否支持共享前缀的信息。
所述前缀列表由所述 MAG从 AAA服务器返回的携带有 或 IF2的业务配置信息的第一 接入响应中提取。 当 MAG向 AAA服务器发送的第一接入请求中带有 MN标识时, AAA服务器 返回的第一接入响应就携带 的业务配置信息; 当 MAG向 AAA服务器发送的第一接入请求 中带有 MN标识和 IF2标识时, AAA服务器返回的第一接入响应就只携带 IF2的业务配置信 息。
在实际部署中 LMA将进行第一认证过程和 /或第二认证过程来获取上述 MN的业务配 置信息。
所述前缀信息列表为: 由 MAG从 AAA服务器接收携带有所述 MN的业务配置信息的第一 接入响应, 并从所述业务配置信息中提取出的前缀列表。 LMA接收到所述注册请求后, 从所述前缀信息列表中匹配出与 IF2承载的业务类型相 同的业务类型所对应的 HNP1。
优选的, 在 MAG收到 LMA分配的 HNP1后, 还包括 MAG向 AAA服务器发送请求消息 (基于 Diameter或 Radius协议) , 将 MAG为 IF2服务的信息发送给 AAA服务器。
3) 当所述注册请求中携带有所述 IF2承载的业务类型时, LMA将所述 IF2承载的业务 类型与本地存储的所述 MN的绑定条目中的业务类型进行匹配, 获取相同的业务类型对应 的 HNP1。
当所述注册请求中携带有 IF2承载的业务类型时, LMA匹配出自身存储的所述 的所 有绑定条目中与 IF2承载业务类型相同的 HNP1 ; 所述绑定条目可以包括 MN标识、 接口使 用的家乡网络前缀、 家乡网络前缀对应的业务类型等。
所述注册请求中携带的所述 的 IF2承载的业务类型, 可以来自 AAA服务器向 MAG返 回的携带有所述 IF2的业务配置信息的第一接入响应, MAG从所述业务配置信息中提取出 IF2承载的业务类型, 或是来自 MN向 MAG发送的链路层 L2消息或网络层 L3消息, 所述链路 层 L2消息或网络层 L3消息通过扩展的选项来携带所述 IF2承载的业务类型。
对于第二类, 本发明实施例的方法提供两种 LMA获取 HNP1的方式:
4) LMA从 AAA服务器返回的携带有所述 MN或 IF2的业务配置信息的第二接入响应中, 提取出所述 IF2承载的业务类型, 并将 IF2承载的业务类型与本地存储的所述 MN的绑定条 目中的业务类型进行匹配, 获取相同的业务类型对应的 HNP1。
LMA根据注册请求中携带的 MN标识或 IF2标识, 向 AAA服务器发送带有 MN标识、 或 MN 标识和 IF2标识的第二接入请求。
所述业务配置信息,是在现有技术基础上,还进一步包括业务信息对应的接口信息, 接口信息中包括接口对应的前缀列表等。 如果在第一接入请求中包括了 MN的接口标识, 则这里返回的是 MN的接口对应的业务配置信息, 如果不包括 MN的接口标识, 则返回的是 MN的所有业务配置信息。 优选的, 所述业务配置信息中还包括 MN是否支持共享前缀的指 示信息。
优选的, 该获取方式在 LMA为 IF2分配了 HNP1后, 还包括将 LMA为所述 MN的 IF2服务的 消息发送给 AAA服务器。
5) LMA从 AAA服务器返回的携带有所述 MN或 IF2的业务配置信息的第二接入响应中, 提取出至少包含所述 HNP1的前缀列表, LMA将所述前缀列表与本地存储的所述 MN的绑定 条目中的前缀进行匹配, 获取相同的 HNP1。 优选的, 当 LMA从 IF2的业务配置信息中提取出的所述 IF2的前缀列表只有一个前缀 时, 即只包含 HNP1 , 根据共享前缀指示, 则 LMA不需再进行匹配, 可以直接获取该 HNP1。
S303, 分配与所述 IF1共享的 HNP1给所述 IF2。
当 LMA获得了所述 HNP1后, 为 IF2分配与 IF1共享的 HNP1。
本发明实施例中所述的分配, 具体为 LMA为 IF2创建一个绑定条目, 并将 HNP1及其生 命周期、 HNP1对应的业务信息、 是否支持共享前缀等信息保存在绑定条目中, 同时在该 绑定条目中, 还保存有 MN的标识, MN的接口信息 (接口标识、 接入类型和其他接口相关 信息) , PCoA等。
优选的, LMA在为所述 IF2分配 HNP1前, 还包括根据所述注册请求中携带的 MN支持共 享前缀的指示信息, 判断 MN是否支持共享前缀, 若 MN支持共享前缀, 则为 IF2分配 HNP1。
所述注册请求中携带的 MN支持共享前缀的指示信息包括:
所述 MAG从 MN通过 IF2发送的 L2消息或 L3消息中, 提取出的 MN支持共享前缀指示信 息; 所述 L2消息或 L3消息通过扩展的标志位来携带所述 MN支持共享前缀指示信息; 或所述移动接入网关 MAG从鉴权授权计费 AAA服务器返回的携带有业务配置信息的 第一接入响应中, 提取出的 MN支持共享前缀的指示信息。
优选的, LMA在为所述 IF2分配 HNP1前, 还可以包括判断 IF2承载的业务类型和 HNP1 对应的业务类型是否相同; 若 IF2承载的业务类型和 HNP1对应的业务类型相同, 就为 IF2 分配 HNP1。
本发明实施例中, 对于一或多个接口已被分配了多个前缀, 而另一个新接口要申请 共享前缀时, 从 AAA服务器返回的业务配置信息中的该新接口的前缀列表可包含多个与 其他接口相同的前缀。 LMA收到所述前缀列表, 并和自身存储的移动节点的绑定条目匹 配时, 将匹配出一个或多个共享前缀, LMA将这些匹配出的共享前缀都分配给新接口, 以达到本发明实施例为多接口移动节点分配共享前缀的目的。 优选的, 在为所述新接口 分配这些共享前缀前, LMA进行判断 MN是否支持共享前缀, 和 /或匹配所述新接口所承载 的业务类型与本地存储的所述移动节点的其他接口承载的业务类型,确定出应该为所述 新接口分配哪些共享前缀。
本实施例的方法在实施时的具体流程, 如图 7所示, 包括:
5701 , 丽的 IF2附着到 MAG2所在网络。
5702, MAG2发送注册请求给 LMA。 MAG2向 LMA发送的 (初始) 注册请求, 可以包括 MN的标识 (如网络接入标识 NAI ) , 与要申请的前缀绑定的 PCoA, 以及其他信息 賺 N的 IF2的接入技术类型等) 。 还可以 进一步包括 IF2要申请的 HNP1 , 或至少包含所述 HNP1的前缀列表, 或所述第二接口 IF2承 载的业务类型等信息; 以及 是否支持共享前缀能力的指示信息。
S703, LMA获取已分配给 IF1的 HNP1。
LMA获取已分配给 IF1的 HNP1, 可以通过以下几种方式进行:
当所述注册请求中携带有 HNP1时, LMA从该注册请求中获取所述 HNP1 ; 所述注册请 求中携带的 HNP1来自于所述 MAG接收的丽通过 IF2发送的 L2消息或 L3消息;
或当所述注册请求中携带有至少包含所述 HNP1的前缀列表时, LMA将所述前缀列表 与 LMA存储的 MN的绑定条目中的前缀进行匹配, 获取相同的 HNP1 ; 所述前缀列表由 MAG从 AAA服务器返回的携带有 或 IF2的业务配置信息的第一接入响应中提取;
或当所述注册请求中携带有 IF2承载的业务类型时, LMA将 IF2承载的业务类型与 LMA 存储的 MN的绑定条目中的业务类型进行匹配, 获取相同的业务类型对应的 HNP1 ;
或 LMA从 AAA服务器返回的携带有 MN或 IF2的业务配置信息的第二接入响应中, 提取 出 IF2承载的业务类型, 并将 IF2承载的业务类型与 LMA存储的 的绑定条目中的业务类 型进行匹配, 获取相同的业务类型对应的 HNP1。
S704, LMA为所述 MN的 IF2分配 HNP1。
优选的,在 LMA为丽的 IF2分配 HNP1前, 还包括 LMA判断所述丽是否支持共享前缀; 若 MN支持共享前缀, 再执行步骤 S704。
优选的,在 LMA为丽的 IF2分配 HNP1前, 还包括 LMA判断所述 IF2承载的业务类型和
HNP1对应的业务类型是否相同; 若 IF2承载的业务类型和 HNP1对应的业务类型相同, 再 执行步骤 S704。
所述 MN是否支持共享前缀是根据注册请求中携带的 MN支持共享前缀的指示信息确 定, 所述注册请求中携带的 MN支持共享前缀的指示信息可以包括:
MN通过 IF2发送的 L2消息或 L3消息中携带的 MN支持共享前缀指示信息;
或 MAG从 AAA服务器返回的携带有业务配置信息的第一接入响应中,提取出的 MN支持 共享前缀的指示信息。
优选的, 在 LMA为 IF2分配 HNP1后, 还包括: LMA将 LMA为 IF2服务的消息发送给 AAA服 务器。 另外, 当 MN不支持共享前缀或 IF2承载的业务类型和 HNP1对应的业务类型不同时, LMA会为丽的 IF2分配新的家乡网络前缀 HNP2, 或者产生失败码, 指示不允许使用共享前
£双°
优选的, 还包括 S705: LMA将所述为 IF2分配的 HNP1携带在注册响应中返回给 MAG2。 本发明实施例中, LMA返回的注册响应指的是代理绑定确认 PBA消息。 MAG2在收到所 述注册响应后, 还包括为 IF2建立 BCE2, 所述 BCE2可以包括: MN标识、 IF2标识、 PCoA2 等信息的对应关系, 以及对应的 LMA。
优选的, 还包括 S706: MAG2将所述 HNP1返回给 MN。
若 LMA为 IF2分配了 ΗΝΡΙ , 则 MAG2在接收到 LMA返回的包含有 HNP1的注册响应后, 通 过路由公告将 HNP1返回给匪。
可选的, 在路由公告扩展消息中带有共享前缀的标志位。
优选的, 还包括 S707: MN根据所述 HNP1为 IF2配置与 IF1相同的家乡地址。
MN的 IF2根据共享前缀进行 IP地址配置, 从而进行后续的业务切换或业务使用。
MN在 IF2上配置的 IP地址与在 IF1上配置的 IP地址相同或不同。如果配置的 IP地址相 同, 则在获取 HNP1时可以直接请求该 IP地址。
本发明实施例的方法在接收到 MN的 IF2的注册请求时, 通过 LMA获取已分配给 MN的 IF1的 HNP1,并为 IF2分配 HNP1。本实施例的方法实现了为多接口移动节点分配共享前缀, 并进一步使多接口移动节点能够为拥有该共享前缀的同一业务获取更多带宽, 或实现业 务在有共享前缀的接口之间的切换, 保证了负载均衡和业务 /会话的连续性。 本发明实施例提供了一种网络系统, 如图 8所示, 包括移动接入网关 110和本地移动 锚点 120。
移动接入网关 110, 用于向本地移动锚点 120发送 MN的 IF2的注册请求。
本地移动锚点 120, 用于根据所述移动接入网关 110发送的注册请求, 获取已分配给 所述 MN的 IF1的 HNP1 ; 以及为所述 IF2分配与 IF1共享的 HNP1。
优选的, 所述移动接入网关 110还用于: 获取所述 HNP1 , 或获取至少包含所述 HNP1 的前缀列表, 或获取所述 IF2承载的业务类型; 并将所述 HNP1或前缀列表或 IF2承载的业 务类型携带在所述注册请求中。
优选的, 所述获取已分配给所述 MN的 IF1的 HNP1为: 当所述注册请求中携带有 HNP1 时, 所述本地移动锚点 120从该注册请求中获取所述 HNP1 ; 或当所述注册请求中携带有 至少包含所述 HNP1的前缀列表时, 所述本地移动锚点 120将所述前缀列表与所述本地移 动锚点 120存储的所述 MN的绑定条目中的前缀进行匹配, 获取相同的 HNP1 ; 或当所述注 册请求中携带有所述 IF2承载的业务类型时, 所述本地移动锚点 120将所述 IF2承载的业 务类型与所述本地移动锚点 120存储的所述 MN的绑定条目中的业务类型进行匹配, 获取 相同的业务类型对应的 HNP1。
优选的, 所述获取已分配给所述 MN的 IF1的 HNP1为: 所述本地移动锚点 120从鉴权授 权计费服务器返回的携带有所述 MN或 IF2的业务配置信息的第二接入响应中, 提取出所 述 IF2承载的业务类型, 并将 IF2承载的业务类型与本地移动锚点 120存储的所述 MN的绑 定条目中的业务类型进行匹配, 获取相同的业务类型对应的 HNP1。
优选的, 所述获取已分配给所述 MN的 IF1的 HNP1为: 所述本地移动锚点 120从鉴权授 权计费服务器返回的携带有所述 MN或 IF2的业务配置信息的第二接入响应中, 提取出至 少包含所述 HNP1的前缀列表, 将所述前缀列表与本地移动锚点 120存储的所述 MN的绑定 条目中的前缀进行匹配, 获取相同的 HNP1。
优选的, 所述移动接入网关 110还用于: 获取所述 MN支持共享前缀的指示信息, 并 将该 MN支持共享前缀的指示信息携带在所述注册请求中。
优选的, 所述本地移动锚点 120还用于: 在为所述 IF2分配 HNP1前, 根据所述移动接 入网关 110发送的注册请求中携带的所述 MN支持共享前缀的指示信息, 判断所述 是否 支持共享前缀。
优选的, 所述网络系统 10还包括: 鉴权授权计费服务器 130, 用于对所述移动接入 网关 110进行第一接入认证并返回第一接入响应; 对本地移动锚点 120进行第二接入认证 并返回第二接入响应; 存储 MN的业务配置信息。
本实施例的网络系统在收到 MN的 IF2的注册请求时, 通过 LMA获取已分配给 MN的 IF1 的 HNP1 , 并为 IF2分配 HNP1。 本实施例的网络系统实现了为多接口移动节点分配共享前 缀, 并进一步使多接口移动节点能够为拥有该共享前缀的同一业务获取更多带宽, 或实 现业务在有共享前缀的接口之间的切换, 保证了负载均衡和业务 /会话的连续性。 本发明实施例提供了一种本地移动锚点, 如图 9所示, 包括:
接收模块 1201, 用于接收移动接入网关 MAG发送的 MN的 IF2的注册请求;
前缀获取模块 1202, 用于根据所述接收模块 1201接收到的注册请求, 获取已分配给 所述 MN的 IF1的 HNP1 ; 分配模块 1203,用于为所述 IF2分配所述前缀获取模块 1202获取到的与所述 IF1共享 的 HNP1。
优选的, 所述前缀获取模块 1202包括以下一个单元或几个单元的组合:
第一单元, 用于当所述注册请求中携带有 HNP1时, 从该注册请求中获取所述 HNP1 ; 第二单元, 用于当所述注册请求中携带有至少包含所述 HNP1的前缀列表时, 将所述 前缀列表与所述本地移动锚点 120存储的 MN的绑定条目中的前缀进行匹配, 获取相同的
HNP1 ;
第三单元, 用于当所述注册请求中携带有所述 IF2承载的业务类型时, 将所述 IF2承 载的业务类型与所述本地移动锚点 120存储的所述 MN的绑定条目中的业务类型进行匹 配, 获取相同的业务类型对应的 HNP1 ;
第四单元,用于从 AAA服务器返回的携带有所述 或 IF2的业务配置信息的第二接入 响应中, 提取出所述 IF2承载的业务类型, 并将 IF2承载的业务类型与所述本地移动锚点 120存储的所述 MN的绑定条目中的业务类型进行匹配, 获取相同的业务类型对应的 HNP1 ;
第五单元,用于从所述 AAA服务器返回的携带有所述 MN或 IF2的业务配置信息的第二 接入响应中,提取出至少包含所述 HNP1的前缀列表,将所述前缀列表与本地移动锚点 120 存储的所述 MN的绑定条目中的前缀进行匹配, 获取相同的 HNP1。
优选的, 所述本地移动锚点 120还包括:
所述本地移动锚点还包括支持共享前缀信息获取模块 1204,用于获取所述注册请求 中携带的 MN支持共享前缀的指示信息;
所述分配模块 1203进一步用于: 根据所述注册请求中携带的所述 MN支持共享前缀的 指示信息, 判断所述 MN是否共享前缀。
本实施例的本地移动锚点, 在收到 MN的 IF2的注册请求后, 获取已分配给 MN的 IF1的 HNP1 , 并为 IF2分配 HNP1, 实现了为多接口移动节点分配共享前缀。 本发明实施例提供了一种多接口移动节点, 如图 10所示, 包括: 发送模块 210, 接 收模块 220, 地址生成模块 230。
发送模块 210, 用于在所述 MN的 IF1已被分配到 HNP1 , 且所述 MN的 IF2附着到移动接 入网关 MAG所在网络后, 通过所述 IF2向 MAG发送携带有所述 HNP1的链路层消息或网络层 消息;
接收模块 220, 用于接收 MAG返回的家乡网络前缀; 地址生成模块 230, 用于根据所述接收模块 220接收的家乡网络前缀生成家乡地址; 优选的, 所述移动节点 20还包括: 管理模块 240, 用于管理所述发送模块 210对接口 共享前缀的申请, 及管理所述地址生成模块 230根据共享前缀生成共享的家乡地址; 控 制业务在有共享家乡地址的多个接口上切换。
优选的, 所述移动节点 20还包括: 业务 /应用模块模块 250, 网际协议模块 260, 接
□ 270。
业务 /应用模块模块 250, 用于为用户提供业务 /应用。
网际协议模块 260, 用于为业务 /应用模块模块 250的业务 /应用提供包括 TCP/IP或 UDP/IP等功能。
接口 270, 用于通过所述网际协议模块 260连接到相同 /不同的接入网络。
管理模块 240与业务 /应用模块模块 250、 网际协议模块 260、 接口 270之间的关系如 图 11所示;管理模块 240将根据策略检查,确定业务是否通过多个接口 270同时连接网络, 或者将业务从一个接口 270切换到另一个接口 270, 或其他操作; 同时确定接口 270是否 需要分配共享前缀给其它某接口 270。
所述策略检查, 是指管理模块 240管理的业务 /应用模块 250与接口 270之间的策略信 息, 这些策略信息可以包括: 业务需要的业务质量 QoS与接口 270对应的链路 QoS (例如 连接到 3G与 WiFi接口所获得的带宽、 延时是有差异的) 、 业务费用与接口 270对应的链 路带来的费用 (例如相同的业务通过 3G与 WiFi接口将产生不同的费用)等; 或者, 指管 理模块 240管理和 /或感知接口 270的状态信息, 例如, 当一个接口 270负载过重或者接口 270失去连接 (如终端移动进入了网络服务区之外) 时, 管理模块 240能够将业务 /应用 从一个接口 270切换到另一个接口 270。
本实施例的多接口移动节点, 通过对接口前缀申请和使用的管理, 在网络侧获取已 被分配给 MN的一个接口的家乡网络前缀、 并将该前缀分配给后续附着的接口情况下, 该 移动节点能够根据共享前缀生成共享的家乡地址, 能够使多接口 MN的业务通过 MN的多个 接口连接到网络以获得更多的带宽, 以及使多接口移动节点的业务在不同接口之间切 换, 保证了负载均衡和业务 /会话的连续性。 本发明实施例提供了一种移动接入网关, 如图 12所示, 包括: 前缀获取模块 1101, 注册请求生成模块 1102, 注册请求发送模块 1103和前缀返回模块 1104。 前缀获取模块 1101, 用于在 MN的 IF1已被分配到 HNPl , 且所述 MN的 IF2附着到所述移 动接入网关 110所在网络后, 获取所述 HNP1。
注册请求生成模块 1102,用于生成携带有所述前缀获取模块 1101获取到的 HNP1的注 册请求。
注册请求发送模块 1103, 用于将所述注册请求发送给 LMA。
优选的, 所述前缀获取模块 1101包括: 第一获取单元, 用于当所述注册请求中携带 有 HNP1时, 从该注册请求中获取所述 HNP1 ; 所述注册请求中携带的 HNP1来自于所述移动 接入网关 110接收的所述 MN通过 IF2发送的链路层消息或网络层消息。
优选的, 所述前缀获取模块 1101包括: 第二获取单元, 用于当所述注册请求中携带 有至少包含所述 HNP1的前缀列表时, 将所述前缀列表与 LMA存储的所述 MN的绑定条目中 的前缀进行匹配, 获取相同的 HNP1 ; 所述前缀列表由所述 MAG从 AAA服务器返回的携带有 MN或 IF2的业务配置信息的第一接入响应中提取。
优选的, 所述前缀获取模块 1101包括: 第三获取单元, 用于当所述注册请求中携带 有所述 IF2承载的业务类型时, 将所述 IF2承载的业务类型与 LMA存储的所述 MN的绑定条 目中的业务类型进行匹配, 获取相同的业务类型对应的 HNP1。
优选的, 所述移动接入网关 110还包括: 前缀返回模块 1104, 用于将 LMA为所述 IF2 分配的家乡网络前缀返回给所述 MN。
本实施例的移动接入网关, 在丽的 IF2附着到 MAG所在网络后, 获取已分配给所述 MN 的 IF1的 HNP1 , 并将携带有 HNP1的注册请求发送给 LMA, 以及在 MN的 IF2被分配了家乡网 络前缀后, 将该前缀返回给 MN, 实现了为多接口移动节点分配共享前缀。
对于移动节点一个或多个接口(如 IF1 )已被分配了多个前缀、 以及为新的接口(如 IF2) 分配多个与其他接口共享的前缀的情况, 本发明实施例的方法、 网络系统、 本地 移动锚点同样适用。
由于本发明实施例的网络系统、 本地移动锚点、 多接口移动节点、 移动接入网关的 实施例部分与方法实施例部分相似内容较多, 因此描述的比较简略, 相似之处请相互参 见。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分步骤是可以通 过程序来指令相关的硬件来完成, 所述的程序可以存储于一计算机可读存储介质中, 该 程序在执行时, 包括如下步骤: 接收移动接入网关发送的移动节点 MN的第二接口 IF2的 注册请求; 根据所述注册请求, 获取已分配给所述 MN第一接口 IF1的第一家乡网络前缀 HNPl ; 为所述 IF2分配与所述 IFl共享的 HNPl。 所述存储介质, 如: ROM / RAM、 磁碟、 光 盘等。
以上所述仅为本发明的较佳实施例而已, 并非用于限定本发明的保护范围。 凡在本 发明的精神和原则之内所作的任何修改、 等同替换、 改进等, 均包含在本发明的保护范 围内。

Claims

权利 要 求
1、 一种前缀分配的方法, 其特征在于, 所述方法包括:
接收移动接入网关发送的移动节点 MN的第二接口的注册请求;
根据所述注册请求, 获取已分配给所述 MN第一接口的第一家乡网络前缀; 分配与所述第一接口共享的第一家乡网络前缀给所述第二接口。
2、 如权利要求 1所述的方法, 其特征在于, 所述注册请求携带有:
所述第一家乡网络前缀;
或至少包含所述第一家乡网络前缀的前缀列表;
或所述第二接口承载的业务类型。
3、 如权利要求 2所述的方法, 其特征在于, 所述根据所述注册请求, 获取已分配给 所述 MN第一接口的第一家乡网络前缀具体包括:
当所述注册请求中携带有第一家乡网络前缀时, 从该注册请求中获取所述第一家乡 网络前缀; 所述注册请求中携带的第一家乡网络前缀来自于所述移动接入网关 MAG接收 的所述移动节点 MN通过第二接口发送的链路层消息或网络层消息;
或当所述注册请求中携带有至少包含所述第一家乡网络前缀的前缀列表时,将所述 前缀列表与本地存储的所述 MN的绑定条目中的前缀进行匹配, 获取第一家乡网络前缀; 所述前缀列表由所述 MAG从鉴权授权计费 AAA服务器返回的携带有 MN或第二接口的业务 配置信息的第一接入响应中提取;
或当所述注册请求中携带有所述第二接口承载的业务类型时,将所述第二接口承载 的业务类型与本地存储的所述 MN的绑定条目中的业务类型进行匹配, 获取相同的业务类 型对应的第一家乡网络前缀。
4、 如权利要求 3所述的方法, 其特征在于, 所述网络层消息具体包括:
所述网络层消息为扩展的路由请求消息或扩展的互联网控制信息协议的移动前缀 请求消息。
5、 如权利要求 1所述的方法, 其特征在于, 所述根据注册请求, 获取第一家乡网络 前缀具体包括:
从鉴权授权计费 AAA服务器返回的携带有所述移动节点 MN或第二接口的业务配置信 息的第二接入响应中, 提取出所述第二接口承载的业务类型, 并将第二接口承载的业务 类型与本地存储的所述 MN的绑定条目中的业务类型进行匹配, 获取相同的业务类型对应 的第一家乡网络前缀; 或 从 AAA服务器返回的携带有所述移动节点 MN或第二接口的业务配置信息的第二接入 响应中, 提取出至少包含所述第一家乡网络前缀的前缀列表, 将所述前缀列表与本地存 储的所述 MN的绑定条目中的前缀进行匹配, 获取第一家乡网络前缀。
6、 如权利要求 1-5任一项所述的方法, 其特征在于, 在分配第一家乡网络前缀给所 述第二接口前, 还包括:
根据所述注册请求中携带的所述移动节点 MN支持共享前缀的指示信息,判断所述 MN 是否支持共享前缀。
7、 如权利要求 6所述的方法, 其特征在于, 所述指示信息包括:
所述移动接入网关 MAG从 MN通过第二接口发送的链路层消息或网络层消息中, 提取 出的 MN支持共享前缀指示信息;
或所述移动接入网关 MAG从鉴权授权计费 AAA服务器返回的携带有业务配置信息的 第一接入响应中, 提取出的 MN支持共享前缀的指示信息。
8、 如权利要求 6所述的方法, 其特征在于, 在分配第一家乡网络前缀给所述第二接 口前, 还包括: 判断所述第二接口承载的业务类型和第一家乡网络前缀对应的业务类型 是否相同。
9、 一种本地移动锚点, 其特征在于, 包括:
接收模块, 用于接收移动接入网关 MAG发送的移动节点 的第二接口的注册请求; 前缀获取模块, 用于根据所述接收模块接收到的注册请求, 获取已分配给所述 MN的 第一接口的第一家乡网络前缀;
分配模块,用于分配所述前缀获取模块获取到的与所述第一接口共享的第一家乡网 络前缀给所述第二接口。
10、 如权利要求 9所述的本地移动锚点, 其特征在于, 所述前缀获取模块包括以下 一个单元或几个单元的组合:
第一单元, 用于当所述注册请求中携带有第一家乡网络前缀时, 从该注册请求中获 取所述第一家乡网络前缀;
第二单元,用于当所述注册请求中携带有至少包含所述第一家乡网络前缀的前缀列 表时, 将所述前缀列表与所述本地移动锚点存储的 MN的绑定条目中的前缀进行匹配, 获 取第一家乡网络前缀; 第三单元, 用于当所述注册请求中携带有所述第二接口承载的业务类型时, 将所述 第二接口承载的业务类型与所述本地移动锚点存储的所述 的绑定条目中的业务类型 进行匹配, 获取相同的业务类型对应的第一家乡网络前缀;
第四单元, 用于从鉴权授权计费 AAA服务器返回的携带有所述 或第二接口的业务 配置信息的第二接入响应中, 提取出所述第二接口承载的业务类型, 并将第二接口承载 的业务类型与所述本地移动锚点存储的所述 MN的绑定条目中的业务类型进行匹配, 获取 相同的业务类型对应的第一家乡网络前缀;
第五单元, 用于从所述 AAA服务器返回的携带有所述 MN或第二接口的业务配置信息 的第二接入响应中, 提取出至少包含所述第一家乡网络前缀的前缀列表, 将所述前缀列 表与本地移动锚点存储的所述 MN的绑定条目中的前缀进行匹配, 获取第一家乡网络前
11、 如权利要求 9或 10所述的本地移动锚点, 其特征在于, 所述本地移动锚点还包 括支持共享前缀信息获取模块,用于获取所述注册请求中携带的 MN支持共享前缀的指示 信息;
所述分配模块进一步用于: 根据所述注册请求中携带的所述移动节点 MN支持共享前 缀的指示信息, 判断所述 MN是否支持共享前缀。
12、 一种网络系统, 其特征在于, 包括:
移动接入网关, 用于向本地移动锚点发送移动节点 MN的第二接口的注册请求; 本地移动锚点, 用于根据所述移动接入网关发送的注册请求, 获取已分配给所述 MN 第一接口的第一家乡网络前缀; 以及分配与所述第一接口共享的第一家乡网络前缀给所 述第二接口。
13、 如权利要求 12所述的系统, 其特征在于, 所述移动接入网关还用于: 获取所述 第一家乡网络前缀, 或获取至少包含所述第一家乡网络前缀的前缀列表, 或获取所述第 二接口承载的业务类型; 并将所述第一家乡网络前缀或前缀列表或第二接口承载的业务 类型携带在所述注册请求中;
所述获取已分配给所述 MN第一接口的第一家乡网络前缀为: 当所述注册请求中携带 有第一家乡网络前缀时, 所述本地移动锚点从该注册请求中获取所述第一家乡网络前 缀; 或当所述注册请求中携带有至少包含所述第一家乡网络前缀的前缀列表时, 所述本 地移动锚点将所述前缀列表与所述本地移动锚点存储的所述 MN的绑定条目中的前缀进 行匹配, 获取第一家乡网络前缀; 或当所述注册请求中携带有所述第二接口承载的业务 类型时,所述本地移动锚点将所述第二接口承载的业务类型与所述本地移动锚点存储的 所述 MN的绑定条目中的业务类型进行匹配, 获取相同的业务类型对应的第一家乡网络前
14、 如权利要求 12所述的系统, 其特征在于, 所述获取已分配给所述 MN第一接口的 第一家乡网络前缀为: 所述本地移动锚点从鉴权授权计费 AAA服务器返回的携带有所述 移动节点 MN或第二接口的业务配置信息的第二接入响应中,提取出所述第二接口承载的 业务类型, 并将第二接口承载的业务类型与所述本地移动锚点存储的所述 MN的绑定条目 中的业务类型进行匹配, 获取相同的业务类型对应的第一家乡网络前缀; 或所述本地移 动锚点从 AAA服务器返回的携带有所述丽或第二接口的业务配置信息的第二接入响应 中, 提取出至少包含所述第一家乡网络前缀的前缀列表, 所述本地移动锚点将所述前缀 列表与本地移动锚点存储的所述 MN的绑定条目中的前缀进行匹配, 获取第一家乡网络前
15、 如权利要求 12-14任一项所述的系统, 其特征在于,
所述移动接入网关还用于: 获取所述移动节点 MN支持共享前缀的指示信息, 并将该 MN支持共享前缀的指示信息携带在所述注册请求中;
所述本地移动锚点还用于: 在分配第一家乡网络前缀给所述第二接口前, 根据所述 移动接入网关发送的注册请求中携带的所述 MN支持共享前缀的指示信息,判断所述移动 节点 MN是否支持共享前缀。
PCT/CN2010/071237 2009-03-26 2010-03-24 一种分配前缀的方法、网络系统和本地移动锚点 WO2010108430A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP10755430.5A EP2387284B1 (en) 2009-03-26 2010-03-24 Method of allocating prefixes, network system and local mobile anchor points
US13/198,496 US9055551B2 (en) 2009-03-26 2011-08-04 Prefix allocation method, network system, and local mobility anchor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200910119782.X 2009-03-26
CN200910119782.XA CN101848454B (zh) 2009-03-26 2009-03-26 一种分配前缀的方法、网络系统和本地移动锚点

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/198,496 Continuation US9055551B2 (en) 2009-03-26 2011-08-04 Prefix allocation method, network system, and local mobility anchor

Publications (1)

Publication Number Publication Date
WO2010108430A1 true WO2010108430A1 (zh) 2010-09-30

Family

ID=42772883

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2010/071237 WO2010108430A1 (zh) 2009-03-26 2010-03-24 一种分配前缀的方法、网络系统和本地移动锚点

Country Status (4)

Country Link
US (1) US9055551B2 (zh)
EP (1) EP2387284B1 (zh)
CN (1) CN101848454B (zh)
WO (1) WO2010108430A1 (zh)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006134480A2 (en) * 2005-06-15 2006-12-21 Spyder Navigations L.L.C. Rrc signalling for fast hs-dsch serving cell change
CN103096315A (zh) * 2011-11-03 2013-05-08 中兴通讯股份有限公司 一种多接入连接建立方法、系统和映射服务器
US10110553B2 (en) * 2012-10-11 2018-10-23 Cable Television Laboratories, Inc. Adaptive prefix delegation
EP3081021A4 (en) * 2014-01-10 2017-03-22 Huawei Technologies Co., Ltd. System and method for distributed and integrated mobility support for mobile networks and mobile hosts
CN105308936A (zh) * 2014-05-23 2016-02-03 华为技术有限公司 一种数据流移动的方法、网络系统及sdn控制器
WO2015176319A1 (zh) 2014-05-23 2015-11-26 华为技术有限公司 一种绑定注册和数据转发方法、相关设备及网络系统
US10015162B2 (en) * 2015-05-11 2018-07-03 Huawei Technologies Co., Ltd. Firewall authentication of controller-generated internet control message protocol (ICMP) echo requests
US11212661B2 (en) * 2020-03-13 2021-12-28 At&T Intellectual Property I, L.P. Apparatuses and methods for facilitating network connectivity via an access point name

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101123575A (zh) * 2006-08-11 2008-02-13 华为技术有限公司 一种支持混合ip的多主机接入方法、系统及设备
CN101212397A (zh) * 2006-12-26 2008-07-02 华为技术有限公司 一种确定本地移动锚点的方法、系统和网络设备
CN101330453A (zh) * 2007-06-19 2008-12-24 中兴通讯股份有限公司 用于无线网络的家乡代理地址获取方法
CN101394333A (zh) * 2007-09-17 2009-03-25 华为技术有限公司 转发报文的方法、装置以及网络系统

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7149225B2 (en) * 2003-03-10 2006-12-12 Cisco Technology, Inc. Arrangement for traversing an IPv4 network by IPv6 mobile nodes via a mobility anchor point
US7843843B1 (en) * 2004-03-29 2010-11-30 Packeteer, Inc. Adaptive, application-aware selection of differntiated network services
FR2879871B1 (fr) 2004-12-20 2007-03-09 Cit Alcatel Dispositif d'attribution dynamique de prefixes de longueurs variables pour des equipements de reseau d'un reseau ip
US20070189219A1 (en) * 2005-11-21 2007-08-16 Mruthyunjaya Navali Internet protocol tunneling on a mobile network
CN101237394B (zh) * 2007-01-31 2012-11-21 华为技术有限公司 锚点设备、处理多接口移动台报文的方法及系统
US20100103876A1 (en) * 2007-03-16 2010-04-29 Panasonic Corporation Mobile terminal and communication management device
KR100881272B1 (ko) * 2007-07-25 2009-02-05 한국전자통신연구원 Pmip6 도메인에서의 이동 라우터 관리 시스템 및 방법
JP5214737B2 (ja) * 2007-11-26 2013-06-19 テレフオンアクチーボラゲット エル エム エリクソン(パブル) 通信ネットワークで使用する方法および装置
EP2091204A1 (en) * 2008-02-18 2009-08-19 Panasonic Corporation Home agent discovery upon changing the mobility management scheme
CN101448252B (zh) * 2008-06-20 2011-03-16 中兴通讯股份有限公司 网络切换实现方法及系统以及移动节点
US8873578B2 (en) * 2008-11-12 2014-10-28 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for use in a communications network
US8599843B2 (en) * 2009-03-02 2013-12-03 Futurewei Technologies, Inc. Apparatus and method for route optimization for proxy mobile internet protocol version six local routing
US8385249B2 (en) * 2009-04-17 2013-02-26 Futurewei Technologies, Inc. Apparatus and method for basic multicast support for proxy mobile internet protocol version six (IPv6)

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101123575A (zh) * 2006-08-11 2008-02-13 华为技术有限公司 一种支持混合ip的多主机接入方法、系统及设备
CN101212397A (zh) * 2006-12-26 2008-07-02 华为技术有限公司 一种确定本地移动锚点的方法、系统和网络设备
CN101330453A (zh) * 2007-06-19 2008-12-24 中兴通讯股份有限公司 用于无线网络的家乡代理地址获取方法
CN101394333A (zh) * 2007-09-17 2009-03-25 华为技术有限公司 转发报文的方法、装置以及网络系统

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2387284A4 *

Also Published As

Publication number Publication date
US20110292879A1 (en) 2011-12-01
EP2387284B1 (en) 2015-07-29
CN101848454B (zh) 2014-01-01
EP2387284A4 (en) 2011-12-14
EP2387284A1 (en) 2011-11-16
US9055551B2 (en) 2015-06-09
CN101848454A (zh) 2010-09-29

Similar Documents

Publication Publication Date Title
KR101410836B1 (ko) 무선통신 시스템 중의 터미널 핸드오버의 방법 및 시스템
JP5453430B2 (ja) マルチインタフェース通信環境におけるプロキシモバイルインターネットプロトコル(pmip)
JP5214737B2 (ja) 通信ネットワークで使用する方法および装置
WO2010108430A1 (zh) 一种分配前缀的方法、网络系统和本地移动锚点
KR101195102B1 (ko) 네트워크 어드레스 할당 방법, 네트워크 및 그 네트워크 노드
Giust et al. A network-based localized mobility solution for distributed mobility management
WO2009152669A1 (zh) 网络切换实现方法及系统以及移动节点
WO2009117891A1 (zh) 分组数据网络连接的注册方法及装置
WO2007076729A1 (fr) Procede de transfert intercellulaire pour utilisateur mobile et dispositif et systeme de communication et dispositif reseau a evolution
WO2010000174A1 (zh) 移动节点的注册、通信、切换方法及装置
WO2009046666A1 (en) Addressing method of policy decision function entity, network element and network system
WO2009149631A1 (zh) 状态切换信息处理方法、移动接入网关和移动终端
JPWO2010073620A1 (ja) ハンドオーバ方法、その方法で用いられる移動端末及びホームエージェント
WO2010072135A1 (zh) 一种网络切换方法、装置及系统
US9148826B2 (en) Handover method and mobile terminal and home agent used in the method
WO2010052919A1 (ja) ハンドオーバ方法、その方法で用いられる移動端末及びホームエージェント
WO2009052723A1 (fr) Procédé d'attribution de pointeur de passerelle, dispositif côté réseau et terminal utilisateur
EP2299748B1 (en) Method and system for supporting mobility security in the next generation network
JP4726860B2 (ja) ゲートウェイ装置、アクセスゲートウェイ装置、コアネットワークシステム、プログラムおよびパケット転送方法
CN101790146A (zh) 分配地址信息的方法、网络设备和网络系统
CN101471840B (zh) 网络连接方法和网络系统
Andersson et al. Rethinking IP mobility management
WO2010000188A1 (zh) 一种实现移动管理域间切换的方法及装置
WO2013064053A1 (zh) 一种流移动中的策略管理方法和系统
KR20100073707A (ko) 이종망 접속 방법

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10755430

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2010755430

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE