WO2009149631A1 - 状态切换信息处理方法、移动接入网关和移动终端 - Google Patents

状态切换信息处理方法、移动接入网关和移动终端 Download PDF

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Publication number
WO2009149631A1
WO2009149631A1 PCT/CN2009/071638 CN2009071638W WO2009149631A1 WO 2009149631 A1 WO2009149631 A1 WO 2009149631A1 CN 2009071638 W CN2009071638 W CN 2009071638W WO 2009149631 A1 WO2009149631 A1 WO 2009149631A1
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WIPO (PCT)
Prior art keywords
mobile terminal
interface
same
mobile
state switching
Prior art date
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PCT/CN2009/071638
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English (en)
French (fr)
Inventor
严为
李春强
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.)
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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 EP09761256.8A priority Critical patent/EP2288191B1/en
Publication of WO2009149631A1 publication Critical patent/WO2009149631A1/zh
Priority to US12/965,316 priority patent/US8824352B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0011Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0016Hand-off preparation specially adapted for end-to-end data sessions
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/02Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08Mobility data transfer
    • H04W8/087Mobility data transfer for preserving data network PoA address despite hand-offs
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/22Processing or transfer of terminal data, e.g. status or physical capabilities
    • 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/16Gateway arrangements

Definitions

  • the embodiments of the present invention relate to the field of communications technologies, and in particular, to a state switching information processing method, a mobile access gateway, and a mobile terminal. Background technique
  • Proxy Mobile Internet Protocol version 6 (hereinafter referred to as PMIPv6) provides a network-based mobility management protocol.
  • the mobile node Mobile Node; hereinafter referred to as MN
  • MN Mobile Node
  • the mobile entity in the network tracks the mobility of the MN and initializes the mobile signaling and the routing state required to establish communication.
  • FIG. 1 is a schematic structural diagram of an existing PMIPv6 network system.
  • the network system includes a Local Mobility Anchor (hereinafter referred to as LMA) and a Mobile Access Gateway (hereinafter referred to as MAG).
  • LMA Local Mobility Anchor
  • MAG Mobile Access Gateway
  • the mobile node, the LMA in the PMIPv6 network is responsible for maintaining the reachability state of the MN, and is the anchor of the Home Network Prefix (HNP) of the MN on the topology; the MAG is representative of the execution mobility.
  • the managed entity is responsible for detecting the explicit movement on its access link and sending a Proxy Banding Update (PBU) message to the LMA corresponding to the MN.
  • PBU Proxy Banding Update
  • the MAG on the access link After identifying the MN and obtaining its identity, will confirm whether the MN is authorized to the network mobility management service. If the system confirms that a network mobility management service needs to be provided, The system will ensure that any type of address configuration mechanism allowed by the network is used to enable the address configuration on the interface to be obtained and moved anywhere in the PMIPv6 network.
  • the address configuration obtained by the MN includes the address from its HNP, the address of the default router on the link, and other related parameter configurations. From an obvious point of view, the entire PMIPv6 network can be regarded as a single link, and the system guarantees that the obtained address configuration is unchanged and always considers it to be on the same link.
  • the LMA will assign a unique HNP to each interface, so that the interface configures the home address according to the respective HNP; if it is displayed in the same PMIPv6 network, switching from one interface to another interface , LMA will assign the same HNP to the new interface.
  • the LMA receives any encapsulated packet sent to the MN. After receiving the encapsulated packet with the destination address prefixed by the HNP, the LMA forwards the encapsulated packet to the MAG through the tunnel. The MAG receives the encapsulated packet. The encapsulated packet is decapsulated and sent to the MN.
  • the MAG will forward the encapsulated packet to the LMA through the tunnel after receiving any encapsulated packet sent to the Correspondence Node (Core). After the packet is encapsulated, the encapsulated packet is decapsulated and then forwarded to the destination CN.
  • Correspondence Node Correspondence Node
  • the MAG on the new access link will send signaling to the LMA to update the binding information on the LMA; on the new link, the MAG will also send the router with its corresponding HNP to the explicit link.
  • the message (Rou ter Adver ti sement; hereinafter referred to as RA) messages the MN believes that it is still on the same link, and uses the same address configuration on the new access link. Therefore, the MAG needs to inform the LMA of the explicit switching state through the PBU, so that the LMA can perform corresponding operations according to the switching state of the MN.
  • the method for obtaining the switching state of the MAG includes: the new MAG can obtain the explicit switching state from the old MAG through the context transmission between the MAGs, or the new MAG uses the AAA architecture to obtain the explicit switching state from the AAA.
  • the inventor finds that when the explicit handover state is obtained through the context transmission between the MAGs, the context interface between the MAGs is required, so that the new MAG obtains the handover indication and the like from the old MAG, but in some The scenario may not be performed as scheduled, such as heterogeneous network switching and no security association between MAGs.
  • the AAA architecture is used to obtain the explicit switching state, it cannot be saved in AAA. Use in port-related information or in scenarios where the AAA structure is not used.
  • the application of the prior art solution has a small application range, has certain limitations, and has poor service quality. Summary of the invention
  • the embodiment of the invention provides a state switching information processing method, a mobile access gateway and a mobile terminal.
  • the utility model solves the defects that the application scope of the prior art solution is small and has certain limitations.
  • the mobile access gateway replaces the mobile terminal to register with the local mobile anchor point to implement the mobile.
  • the access gateway obtains the mobile terminal state switch by using the indication information of the interface of the mobile terminal.
  • the embodiment of the invention provides a method for processing state switching information, including:
  • a proxy binding update message is generated and sent, the proxy binding update message including the handover indication option value.
  • the embodiment of the invention further provides a mobile access gateway, including:
  • a first receiving module configured to receive a state switching notification message, where the state switching notification message includes an interface usage indication information
  • a determining module configured to determine, according to the interface usage indication information, a handover indication option value
  • a first sending module configured to generate and send a proxy binding update message, where the proxy binding update message includes the handover indication option value.
  • the embodiment of the invention further provides a mobile terminal, including:
  • a second sending module configured to send a state switching notification message, where the state switching notification message includes an interface usage indication information
  • a second receiving module configured to receive a router advertisement returned according to the interface usage indication information, where the router advertisement includes a home prefix allocated to the mobile terminal.
  • the state switching information processing method, the mobile access gateway, and the mobile terminal provided by the embodiment of the present invention send a state switching notification message carrying the interface use indication information to the mobile access gateway by using the mobile terminal, and notify the mobile terminal of the handover state of the mobile terminal.
  • the mobile access gateway receives and configures the proxy binding update according to the interface usage indication information in the state switching notification message, so that the mobile access gateway obtains the mobile terminal state switching by using the indication information of the interface of the mobile terminal, thereby improving the user.
  • the probability of successful access, a wide range of applications, can improve the quality of access services provided to users.
  • FIG. 1 is a schematic structural diagram of an existing PMIPv6 network system
  • Embodiment 1 is a flowchart of Embodiment 1 of a method for processing state switching information according to the present invention
  • Embodiment 3 is a signaling flowchart of Embodiment 2 of a method for processing state switching information according to the present invention
  • Embodiment 4 is a signaling flowchart of Embodiment 3 of a method for processing state switching information according to the present invention
  • FIG. 5 is a schematic structural diagram of Embodiment 1 of a mobile access gateway according to the present invention.
  • Embodiment 2 of a mobile access gateway according to the present invention is a schematic structural diagram of Embodiment 2 of a mobile access gateway according to the present invention.
  • Embodiment 7 is a schematic structural diagram of Embodiment 1 of a mobile terminal according to the present invention.
  • FIG. 8 is a schematic structural diagram of Embodiment 2 of a mobile terminal according to the present invention. detailed description
  • FIG. 2 is a flowchart of Embodiment 1 of a method for processing state switching information according to the present invention.
  • the state switching information processing method includes:
  • the interface needs to be The switching state is sent to the mobile access gateway, and the mobile access gateway receives the state switching notification message sent by the mobile terminal, where the state switching notification message may include the interface usage indication information of the mobile terminal, and the interface usage indication information is used to identify the mobile terminal.
  • the terminal switches state by accessing the mobile access gateway.
  • the status switch notification message may be a router request message or a first configuration request message.
  • the interface usage indication information may be used to identify that: the mobile terminal accesses the mobile access gateway through the new interface, or the same mobile terminal switches from the first interface access to the second interface to access the mobile access gateway, or the same mobile terminal. Access the new mobile access gateway through the same interface.
  • the mobile terminal accessing the mobile access gateway through the new interface may be in two situations: first, accessing the mobile access gateway is any interface of the new mobile terminal, and first, accessing the mobile access
  • the gateway is an interface of the mobile terminal that is not connected to the mobile access gateway; the same mobile terminal can switch from the first interface to the second interface to access the mobile access gateway in two cases: Switching from the first interface access to the second interface accessing the same mobile access gateway, wherein the same mobile terminal switches from the first interface access to the second interface to access another mobile access gateway; the same mobile terminal passes The access of the same interface to the new mobile access gateway is specifically as follows: The same mobile terminal accesses different mobile access gateways through the same interface.
  • the mobile access gateway After receiving the status switching notification message sent by the mobile terminal, the mobile access gateway determines the switching indication option value according to the interface usage indication information in the status switching notification message, which is specifically as follows:
  • the method for determining, by the mobile access gateway, the handover indication option value according to the interface usage indication information may be classified into three types:
  • the interface in the state switching notification message uses the indication information to identify that the mobile terminal accesses the mobile access gateway through the new interface, determining that the handover indication option value indicates that the local mobility anchor allocates a unique home prefix to the mobile terminal.
  • the interface in the state switching notification message uses the indication information to identify that the same mobile terminal accesses the new mobile access gateway through the same interface, determining that the handover indication option value indicates that the local mobility anchor is allocated to the mobile terminal The same home prefix used by the same interface.
  • the mobile access gateway determines whether the interface usage indication information in the first configuration request is used to identify the same mobile terminal.
  • An interface access is switched to the second interface to access or is used to identify that the same mobile terminal accesses the new mobile access gateway through the same interface; and determining whether the mobile access gateway stores the hometown used before the mobile terminal switches Address: when the interface usage indication information is used to identify that the same mobile terminal accesses from the first interface access to the second interface access or is used to identify that the same mobile terminal accesses the new mobile access gateway through the same interface, and when When the mobile home gateway stores the home address used before the mobile terminal switches, the mobile terminal returns the home address used before the mobile terminal switches.
  • the determining interface uses the indication information to identify whether the same mobile terminal accesses from the first interface to the second interface, or identifies that the same mobile terminal accesses the new mobile access gateway through the same interface, and determines the mobile Whether there is a home address used before the mobile terminal switches on the access gateway can be in no particular order.
  • the mobile access gateway may return the home address to the mobile terminal, where the mobile access gateway returns an oint-to-point protocol (PPP) to the mobile terminal.
  • PPP oint-to-point protocol
  • the mobile terminal After receiving the PPP negative message, the mobile terminal generates a second configuration request message that carries the interface usage indication information and the home address used by the mobile terminal before the handover according to the PPP negative message, and sends the second configuration request message to the mobile access gateway.
  • the mobile access gateway learns The home address included therein is returned to the mobile terminal and the confirmation message of the second configuration request message is returned to the mobile terminal when the home address of the mobile terminal stored by the mobile access gateway itself is the same.
  • the home address used by the mobile terminal to switch is the home address used before the first interface of the mobile terminal is switched.
  • the home address used by the mobile terminal to switch is the same interface of the mobile terminal to switch from the old mobile access gateway to the new one.
  • the PPP negative message may be a NAK message in the PPP, and is used to negate the first configuration request (conf i gure reques t ) message sent by the mobile terminal. After receiving the NAK message, the mobile terminal needs to send the message to the mobile access gateway.
  • the second configuration request message waits for the mobile access gateway to return an acknowledgement message (ACK message).
  • the mobile access gateway determines that the home address used by the mobile terminal before the handover is not stored, returning an acknowledgement message of the first configuration request to the mobile terminal, indicating that the mobile access gateway does not successfully send the mobile terminal to the mobile terminal
  • the home address used before the terminal is switched.
  • the method for determining, by the mobile access gateway, the handover indication option value according to the interface usage indication information may also be classified into three types: First, when the state switching notification is When the interface in the message uses the indication information to identify that the mobile terminal accesses the mobile access gateway through the new interface, determining that the handover indication option value indicates that the local mobility anchor allocates a unique home prefix to the mobile terminal;
  • the interface in the state switching notification message uses the indication information to identify that the same mobile terminal switches from the first interface access to the second interface to access the mobile access gateway, determining that the handover indication option value indicates that the local mobility anchor is The mobile terminal allocates the same home prefix as used by the first interface;
  • the interface in the state switching notification message uses the indication information to identify that the same mobile terminal accesses the new mobile access gateway through the same interface, determining that the handover indication option value indicates local mobility
  • the anchor assigns the mobile terminal the same home prefix as used by the same interface.
  • the mobile access gateway updates the handover indication option value according to the interface usage indication information in the state switching notification message, generating a proxy binding update message carrying the handover indication option value, and sending the proxy binding update message to the Move the anchor point locally.
  • the local mobility anchor receives the proxy binding update message determined according to the interface usage indication information, and can be classified into the following three operations according to different handover indication option values in the proxy binding update message:
  • the mobile terminal is assigned a unique home prefix, and a new cache can be created. Binding entry;
  • the unique home prefix can be a home prefix or a home prefix group, which contains multiple home prefixes.
  • the handover indication option value in the proxy binding update message is used to identify that the same mobile terminal switches from the first interface access to the second interface access, by comparing the proxy binding update message with the maintained binding Determining a cache entry, assigning the mobile terminal the same home prefix as used by the first interface;
  • the handover indication option value in the proxy binding update message is used to identify that the same mobile terminal accesses the new mobile access gateway through the same interface, by comparing the proxy binding update message with the maintained binding cache An entry, the mobile terminal is assigned the same home prefix as used by the same interface.
  • the process for the local mobile anchor to allocate the home prefix to the mobile terminal according to the value of the handover indication option may include: the local mobility anchor sends a proxy binding confirmation message (PBA) carrying the home prefix to the mobile access gateway;
  • PBA proxy binding confirmation message
  • the ingress gateway generates a router advertisement according to the home prefix in the proxy binding confirmation message, and sends a router advertisement carrying the home prefix to the mobile terminal.
  • the mobile access gateway receives the proxy binding acknowledgement message sent by the local mobility anchor, where the proxy binding acknowledgement message includes a home prefix assigned to the mobile terminal, and may include the following three conditions: When the handover indication option value in the binding acknowledgement message is used to identify that the mobile terminal accesses through the new interface, the mobile access gateway receives the local home agent prefix binding confirmation sent by the local mobility anchor point for the mobile terminal. The second is that when the handover indication option value in the proxy binding acknowledgement message is used to identify that the same mobile terminal accesses from the first interface access to the second interface access, the mobile access gateway receives the local mobile anchor point to send.
  • the mobile access gateway receives the local mobile anchor point to send and allocate to the mobile terminal Same home agent of said same prefix used by an interface binding acknowledgment message.
  • the router response received by the mobile terminal carries a unique home prefix assigned to the mobile terminal, and the mobile terminal sends the status according to the unique home prefix.
  • the interface for switching the notification message is configured with a corresponding home address; when the interface usage indication information is used to identify that the same mobile terminal accesses from the first interface to the second interface, or is used to identify that the same mobile terminal accesses the new mobile through the same interface.
  • the mobile terminal router response When accessing the gateway, the mobile terminal router response carries the home prefix used before the mobile terminal switches, and the mobile terminal configures the corresponding home address according to the same interface of the home state prefix to send the state switching notification message, if the mobile terminal moves to the mobile terminal
  • the gateway sends the first configuration request message, and the mobile terminal can also check whether the home address configured on the mobile terminal is correct according to the home prefix of the mobile terminal. If not, reconfigure the home address according to the home prefix.
  • the mobile terminal then communicates with the network according to its configured home address.
  • the mobile terminal sends a state switching notification message carrying the interface use indication information to the mobile access gateway, and notifies the mobile access gateway of the handover state of the mobile terminal; the mobile access gateway receives and according to The interface in the state switch notification message uses the indication information to match the proxy binding update.
  • the mobile access gateway obtains the state switching of the mobile terminal by using the indication information of the interface of the mobile terminal, and has a wide application range, thereby improving the probability of successful user access, thereby improving the access service quality provided for the user.
  • FIG. 3 is a signaling flowchart of a method for processing a state switching information according to a second embodiment of the present invention.
  • the corresponding relationship between the MN is a mobile terminal, the MAG is a mobile access gateway, and the LMA is local.
  • the mobile anchor point, the RS message is a state switching notification message, and H0 is an interface usage indication information carried in the RS message.
  • the state switching information processing method includes:
  • the new MAG receives a Router Request (RS) message sent by the MN, where the Router Request (RS) message carries an interface usage indication information (H0);
  • RS Router Request
  • H0 interface usage indication information
  • H0 can be obtained by extending the RS message, such as adding a corresponding identifier bit in the RS message or adding a new option.
  • the flag of the HO can be set in the reserve field of the RS message.
  • HO(Handoff) can represent different situations by different values.
  • H0 adopts the type, length, and value (Type, Length, Value; hereinafter referred to as TLV) format, and the corresponding identifier or value is defined as:
  • HO is "3" it means that the same interface is switched between different MAGs (Handoff between mobile access gateways for the same interface);
  • H0 uses the TLV format only as a An example is given.
  • the new MAG determines, according to the interface usage indication information, a handover indication option value.
  • the option value of the interface usage indication information is “1”, indicating that a new interface requests access to the MAG, and is divided into two cases: the new interface. It may be a new interface b on the MN that has access to the PMIPv6 network MAG, or a new interface a on the new MN that has never accessed the PMIPv6 network MAG.
  • the MAG may determine the handover indication option value as "1". " ;
  • the value of the option in the interface usage indication is "2", which means that the switch between different interfaces on the same display is divided into two cases: Switching from the connection between the explicit interface a and the MAG to the connection between the interface b of the MN and the MAG. It may be that the connection from the explicit interface a to the old MAG is switched to the connection between the interface b of the MN and the new MAG. At this time, the MAG may determine the value of the handover indication option as "2";
  • the value of the option in the interface usage indication is "3", indicating that the same interface is switched between different MAGs.
  • the handover may be from the connection between the interface a of the MN and the old MAG to the connection between the interface a of the MN and the new MAG.
  • MAG can determine the value of the switching indication option to "3".
  • Figure 3 shows the case of switching from the old MAG to the new MAG.
  • the value of H0 can be "2", indicating that the connection from the interface a of the MN to the old MAG is switched to the interface b of the MN and the new MAG.
  • the connection; the value of H0 can also be "3”, indicating that the connection from the explicit interface a to the old MAG is switched to the connection between the explicit interface a and the new MAG.
  • the MAG sets the switching indication option value according to the value of H0.
  • the switching indication option value may be the same value as H0, or may be represented by other identifiers.
  • the new MAG sends a proxy binding update message (PBU) to the LMA, where the proxy binding update message includes the handover indication option value.
  • PBU proxy binding update message
  • the MAG sets the handover indication option value according to the value of the different H0 in the interface usage indication information, generates a PBU carrying the handover indication option value, and sends the PBU to the LMA.
  • the new MAG receives a proxy binding acknowledgement message (PBA) sent by the LMA, where the PBA carries the explicit home prefix (HNP);
  • PBA proxy binding acknowledgement message
  • HNP explicit home prefix
  • the LMA After receiving the PBU sent by the MAG, the LMA updates itself according to the value of the switching indication option in the PBU. Binding information, assigning a home prefix (HNP) to the interface of the MN, and generating a PBA carrying the HNP, and sending the PBA to the MAG;
  • HNP home prefix
  • the LMA After receiving the PBU sent by the MAG, the LMA performs the following operations: When H0 is "1", the LMA allocates a unique home prefix to the MN and creates a new binding cache entry.
  • the LMA compares the binding cache entries of the PBU with the maintained MN, and assigns the same HNP to the MN through the PBA before the handover (ie, before and after the handover, the MN different interfaces will still use the same prefix);
  • the LMA compares the binding cache entries of the PBU with the maintained MN, and assigns the same HNP to the MN through the PBA before the handover (that is, before and after the handover, the same interface will still use the same prefix);
  • H0 is " 4", the LMA assigns the corresponding prefix to the MN according to the situation;
  • the MAG When H0 is "5", the lifetime of the corresponding binding cache entry on the LMA is updated (l i fet ime ); then, the MAG receives the PBA sent by the LMA, and generates a router response (RA) according to the HNP carried in the PBA.
  • RA router response
  • the new MAG sends an RA to the MN, where the RA carries the explicit HNP.
  • the mobile terminal sends a router request message carrying the interface use indication information to the mobile access gateway, and notifies the mobile access gateway of the handover status of the mobile terminal; the mobile access gateway receives and according to the The interface in the router request message uses the indication information to configure the proxy binding update.
  • the network layer in the PMIPv6 network implements the state switching information when the mobile access gateway acquires the state switching of the mobile terminal, which can improve the success of the user accessing the network. Probability, thereby improving service quality.
  • MN is a mobile terminal
  • MAG is a mobile access gateway
  • a configuration request is performed.
  • Conf i gure reques t The message is a state switching notification message
  • H0 is the interface usage indication information
  • HoA is the home address used before the display switch
  • LMA is the local mobility anchor point.
  • the state switching information processing method includes: 400.
  • the new MAG receives the first configuration request message, where the first configuration request message carries the interface usage indication information (H0);
  • the first configuration request message carries the H0 in addition to the related option defined by the IPv6CP (RFC1 332, RFC5072), where the value of H0 can be defined in the same TLV format as in the second embodiment of the present invention, and The meaning of the numerical value of H0 in this embodiment is described by taking the meaning corresponding to the numerical value of H0 in the second embodiment as an example.
  • the new MAG determines, according to the interface usage indication information (H0), a handover indication option value. After receiving the first configuration request message that is sent by the MN and carrying the interface usage indication information (H0), the MAG determines, according to the value of H0. The following can be included before switching the indication option value:
  • the new MAG judges the value of H0. If H0 is "2" or "3", execute 4012, otherwise, execute 4015;
  • the new MAG determines whether to store the related information (including the home address HoA used before the display switchover, the home prefix HNP, etc.), if yes, execute 401 3, if not, execute 4015;
  • the new MAG returns to the MN a PPP negative message (NAK message) carrying the HoA used before the MN handover;
  • the new MAG receives and sends a second configuration request message (configuration request message), where the value and IP of the H0 carried in the configuration request message are HoA used before the MN handover;
  • the new MAG returns an acknowledgement message (ACK message) to the MN;
  • the new MAG generates a PBU that carries the value of the handover indication option, and sends the PBU to the LMA.
  • the new MAG receives the PBA message that is sent by the LMA and carries the HNP of the MN.
  • the new MAG sends an R A message carrying the displayed HNP to the MN.
  • the third embodiment of the foregoing state switching information processing method is applicable to a network environment in which a link layer connection is established by using a point-to-point protocol (PPP), and PPP is provided as a point.
  • PPP point-to-point protocol
  • the link layer protocol that carries network layer packets on the link to the point in TCP/IP protocol
  • the second layer of the stack is designed primarily for point-to-point data transfer over full-duplex synchronous and asynchronous links.
  • PPP defines a complete set of protocols.
  • the link control protocol family is mainly used to establish, tear down, and monitor PPP data links, and negotiate some link attributes.
  • the network control protocol family is mainly used to negotiate the type of network layer data packets transmitted on the data link. And some attributes of the network layer protocol itself (such as IPCP to negotiate IP address, etc.); PPP extended protocol family is mainly used to provide further support for PPP functions, in fact, is to provide some feature services, some extended protocols based on PPP protocol framework design . For example, an authentication protocol for network security.
  • the mobile terminal sends a first configuration request message carrying the interface usage indication information to the mobile access gateway, and notifies the mobile access gateway of the handover status of the mobile terminal; the mobile access gateway receives the After the first configuration request message, it is first determined whether the mobile access gateway (MAG) has related information (such as a home address, etc.) of the mobile terminal (if the home address, etc.), and if so, the interface in the first configuration request message is used. Whether the indication information is used to identify that the same mobile terminal accesses from the first interface access to the second interface access (corresponding to H0 in the second embodiment is "2") or is used to identify that the same mobile terminal accesses the new interface through the same interface.
  • MAG mobile access gateway
  • the mobile access gateway (corresponding to H0 in the second embodiment is "3", that is, the case of switching from the old MAG to the new MAG shown in FIG. 4), and if so, returning to the mobile terminal before using the mobile terminal to switch
  • the home address ( ⁇ ) can be implemented by returning a PPP negative message (NAK message) carrying the HoA used before the handover of the mobile terminal. Because the first configuration request message does not necessarily carry the HoA used before the handover of the mobile terminal, or the address information carried in the first configuration request message is not necessarily equal to the HoA used before the handover of the mobile terminal, the NAK message needs to be returned to the mobile terminal.
  • the mobile terminal needs to send, to the MAG, a second configuration request message that carries the HoA used before the handover of the mobile terminal, when the HoA in the second configuration request message matches the HoA used before the mobile terminal stored on the MAG switches.
  • a confirmation message of the second configuration request message to the mobile terminal indicating that the request is successful; then configuring the handover indication option value in the proxy binding update message (PBU); then the MAG sends the PBU to LMA;
  • the LMA returns the PBA carrying the HNP allocated by the LMA to the MN to the MAG; the MAG returns the RA carrying the HNP to the MN; at this time, the ⁇ can check whether the home address on the MN is correct according to the HNP in the RA, if incorrect Then, the home address is reconfigured according to the HNP.
  • the switch indication value in the PBU is directly set, and then the MAG is sent to the LMA; the LMA is returned to the MAG.
  • the MN determines its own HoA according to the HNP in the RA, it communicates through the Ho A.
  • the mobile access gateway can obtain the state switching of the mobile terminal by using the indication information of the interface of the mobile terminal at the link layer, thereby improving the probability of successful user access and ensuring smooth communication, thereby improving Business service quality.
  • the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.
  • FIG. 5 is a schematic structural diagram of Embodiment 1 of a mobile access gateway according to the present invention.
  • the mobile access gateway includes a first receiving module 51, a determining module 52, and a first sending module 53, where the first receiving module 51 is used.
  • Receiving a state switching notification message the state switching notification message includes interface usage indication information;
  • the determining module 52 is connected to the first receiving module 51, and configured to determine, according to the interface usage indication information, a handover indication option value;
  • the method is coupled to the determining module 52, configured to generate and send a proxy binding update message, where the proxy binding update message includes the switching indication option value.
  • the determining module 52 determines the switching indication option value according to the interface usage indication information.
  • the first sending module 53 will carry the determining module 52:
  • the proxy binding update message of the handover indication option value is sent to the local mobility anchor, requesting the local mobility anchor to allocate the home prefix according to the handover state of the mobile terminal, and the mobile access gateway forwards the home prefix to the mobile terminal, where the mobile terminal is Ensure that the normal communication reconfigures information about the interface.
  • the mobile access gateway before the sending of the proxy binding update message to the local mobility anchor, the state switching notification message that is sent by the mobile terminal and carries the interface usage indication information, can be determined according to the interface usage indication information.
  • the switching state of the mobile terminal is configured, and the switching indication option value is configured, and the switching state information of the mobile terminal is accurately reported to the local mobility anchor for proxy update, ensuring smooth communication after the interface switching occurs in the mobile terminal, and improving service quality.
  • FIG. 6 is a schematic structural diagram of Embodiment 2 of a mobile access gateway according to the present invention.
  • the mobile access gateway includes a first receiving module 51 and a determining module. 52.
  • the determining module 52 includes a first determining unit 521, a second determining unit 522, and a third determining unit 523, where the first determining unit 521 is configured to use the indication information according to the interface for identifying that the mobile terminal accesses through a new interface.
  • the third home determining unit 523 is configured to determine, according to the interface usage indication information used to identify that the same mobile terminal accesses the new mobile access gateway through the same interface, the handover indication option value, where the handover indication option value is Used to indicate that the local mobility anchor allocates the phase used by the same interface to the mobile terminal Home prefix.
  • the determining module 52 determines, according to different interface usage indication information sent by the mobile terminal, the corresponding function module to determine the handover indication option value.
  • the first determining unit 521 determines that the handover indication option value is specific to the local mobility anchor point to allocate a unique home prefix to the mobile terminal.
  • Information value When the interface sent by the mobile terminal uses the indication information to identify that the same mobile terminal accesses from the first interface to the second interface, the second determining unit 522 determines that the handover indication option value is capable of indicating that the local mobility anchor is the mobile terminal.
  • the third determining unit 523 determines that the handover indication option value is a specific information value that can indicate to the local mobility anchor to assign the mobile terminal the same home prefix as used by the same interface.
  • the status switch notification message sent by the mobile terminal may be a router request message, or may be a first configuration request message, and the determining module can determine to send the status switch notification message according to the information in the message.
  • the mobile access gateway may further include a first determining module 54 and a second determining module 55, wherein the first determining module 54 is connected to the first receiving module 51. For determining whether the home address used before the mobile terminal is switched, the second determining module 55 is connected to the first determining module 54 for storing the home address on the mobile access gateway. Determining the type of indication information used by the interface.
  • the mobile access gateway of the embodiment of the present invention may further include a storage module 56, configured to store the home address of the user terminal, and the first determining module 54 determines, according to the home address stored in the storage module 56, whether the mobile terminal is stored before the handover. The home address is used; the second determining module 55 determines whether the interface usage indication information type is used to identify that the same mobile terminal is switched from the first interface access to the second interface access or is used to identify the same mobile terminal through the same interface. Accessing the new mobile access gateway, wherein the determining process of the first determining module 54 and the determining process of the second determining module 55 may be in no order; the first sending module 53 sends the home address to the mobile terminal.
  • the storage module 56 can also store the home prefix of the mobile terminal.
  • the first receiving module 51 receives the After receiving the proxy binding acknowledgement message (PBA) carrying the home prefix returned by the local mobility anchor, sending a router advertisement A) carrying the home prefix to the mobile terminal, in the forwarding process, the mobile access gateway may also The hometown prefix is stored in the storage module 56.
  • PBA proxy binding acknowledgement message
  • the mobile access gateway may also The hometown prefix is stored in the storage module 56.
  • the mobile access gateway provided by the embodiment can determine the handover indication option value according to the interface usage indication information sent by the mobile terminal, and send the handover indication option value information to the local mobility anchor to perform proxy update, and ensure the obtained handover state information. Under the premise of accuracy, the communication is guaranteed to be smooth, and the service quality of the mobile terminal when the interface is switched is improved.
  • FIG. 7 is a schematic structural diagram of Embodiment 1 of a mobile terminal according to the present invention.
  • the mobile terminal includes a second sending module 71 and a second receiving module 72, where the second sending module 71 is configured to send a status switching notification message.
  • the state switching notification message includes interface usage indication information.
  • the second receiving module 72 is configured to receive a router advertisement returned according to the interface usage indication information, where the router advertisement includes a home prefix allocated for the mobile terminal.
  • the second sending module 71 of the mobile terminal sends a state switching notification message including the interface usage indication information to the mobile access gateway; and the mobile access gateway sends a proxy configured according to the interface usage indication information to the local mobility anchor node.
  • the second receiving module 72 receives the router advertisement that is sent by the mobile access gateway and carries the home prefix.
  • the mobile terminal provided by the embodiment can generate a state switching notification message when the state transition occurs, and the state switching notification message carries the interface usage indication information that can indicate the handover state of the mobile terminal, and carries the interface usage indication information.
  • the state switching notification message is sent to the mobile access gateway, so that the mobile access gateway configures its proxy binding update message according to the interface usage indication information, and sends the message to the local mobility anchor to allocate the home prefix to the mobile terminal.
  • the mobile access gateway can conveniently obtain the state switching information, thereby ensuring high success rate of user access and improving service quality.
  • FIG. 8 is a schematic structural diagram of Embodiment 2 of a mobile terminal according to the present invention, as shown in FIG.
  • the mobile terminal includes a second sending module 71, a second receiving module 72, and a configuration module 73.
  • the second sending module 71 is configured to send a state switching notification message, where the state switching notification message includes interface usage indication information, and the interface usage indication address information, where the state switching notification message may be a router request message or a first configuration.
  • the configuration module 73 is connected to the second receiving module 72, and configured to configure a home address for the interface of the mobile terminal according to the received home prefix assigned to the mobile terminal.
  • the second receiving module 72 may further be configured to receive a PPP negative message (NAK message) returned according to the interface usage indication information, where the NAK message includes the The home address used before the mobile terminal switches, indicating that the state switch notification message sent by the mobile terminal to the mobile access gateway is unsuccessful; at this time, the second sending module 71 sends the mobile access gateway to generate the home address according to the NAK message.
  • NAK message PPP negative message
  • a second configuration request message where the second configuration request message includes the interface usage indication information and a home address used before the mobile terminal switches; and then the second receiving module 72 receives the second configuration sent by the mobile access gateway.
  • the mobile access gateway After the second receiving module 72 receives the ACK message returned by the mobile access gateway, the mobile access gateway sends a proxy binding update message to the local mobility anchor, and receives the local mobility anchor to send according to the proxy binding update message.
  • the home terminal prefix of the mobile terminal, and transmitting a router advertisement carrying the hometown prefix to the mobile terminal.
  • the second receiving module 72 receives the router advertisement that is sent by the mobile access gateway and carries the home prefix.
  • the configuration module 73 configures the home address of the mobile terminal according to the home prefix received by the second receiving module 72.
  • the mobile terminal provided by the embodiment can generate a state switching notification message when the state transition occurs, and the state switching notification message carries the interface usage indication information that can indicate the handover state of the mobile terminal, and carries the interface usage indication information.
  • the state switching notification message is sent to the mobile access gateway, and after receiving the local mobility anchor point, the mobile terminal is assigned a home prefix, according to the The home prefix is used to allocate the home address to the mobile terminal.
  • the mobile terminal has a state switch, the mobile terminal is notified of the handover state of the mobile terminal to ensure the smooth communication after the state transition of the mobile terminal, and the service quality is improved.

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Description

状态切换信息处理方法、 移动接入网关和移动终端
本申请要求于 2008 年 6 月 12 日提交中国专利局、 申请号为 200810114796.8, 发明名称为 "状态切换信息处理方法、 移动接入网关和移 动终端" 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
本发明实施例涉及通信技术领域, 特别是一种状态切换信息处理方法、 移动接入网关和移动终端。 背景技术
代理移动互联网协议版本 6 ( Proxy Mobile Internet Protocol version 6; 以下简称: PMIPv6 )提供了一种基于网络的移动性管理协议。 移动节点 (Mobile Node; 以下简称: MN )在 PMIPv6 网络中无需参与任何的移动性管 理信令, 网络中的移动实体跟踪 MN的移动, 并且初始化移动信令和建立通信 所需的路由状态。
图 1为现有 PMIPv6网络系统结构示意图, 如图 1所示, 该网络系统包括 本地移动错点 ( Local Mobility Anchor; 以下简称: LMA) 、 移动接入网关 (Mobile Access Gateway; 以下简称: MAG)和移动节点, PMIPv6网络中的 LMA负责维护 MN的可达性状态,并且在拓朴上作为 MN的家乡网络前缀( Home Network Prefix; 以下简称: HNP) 的锚点; MAG是代表顯执行移动性管理 的实体, 负责在其接入链路上探测顯的移动,并且发送代理绑定更新 ( Proxy Banding Update; 以下简称: PBU )消息至与 MN对应的 LMA。 当 MN进入 ΡΜΙΡνό 网络时, 接入链路上的 MAG在识别 MN并且获得其标识后, 将确认 MN是否被 授权网络移动性管理服务。如果系统确认需要提供网络移动性管理服务给顯, 系统将保证顯使用网络允许的任何一种地址配置机制, 使顯获得接口上的 地址配置, 并且在 PMIPv6网络随处移动。 MN获得的地址配置包括来自其 HNP 的地址、 链路上缺省路由器的地址和其它相关参数配置。 从顯的角度来看, 整个 PMIPv6网络可视为一个单一的链路, 系统保证顯获得的地址配置不变, 并且始终认为其在同一链路上。 如果 MN通过多个接口同时连接至 PMIPv6网 络, LMA将为每个接口分配一个唯一的 HNP , 使得接口根据各自的 HNP配置家 乡地址; 如果顯在相同的 PMIPv6 网络中从一个接口切换至另一接口, LMA 将分配相同的 HNP至新的接口。 LMA作为 MN的拓朴锚点, 接收任何发送至 MN 的封装报文, LMA收到目的地址前缀为顯的 HNP的封装报文后, 通过隧道将 封装报文转发至 MAG , MAG 收到封装报文, 对封装报文进行解封装并发送给 MN。MAG作为 MN的缺省网关,在收到任何发送至通讯对端节点( Cor res ponden t Node; 以下简称: CN ) 的封装报文后, 将通过隧道方式转发封装报文至 LMA , LMA收到封装报文后, 对封装报文进行解封装后转发至目的地 CN。
当顯的接入链路发生改变, 新的接入链路上的 MAG将发送信令至 LMA , 以 更新 LMA上绑定信息;新链路上 MAG还将向顯发送包含其相应 HNP的路由器通告 ( Rou ter Adver t i sement ; 以下简称: RA ) 消息, 使 MN相信其仍然在相同链 路上, 而且在新的接入链路上顯使用相同的地址配置。 因此, MAG需要通过 PBU 向 LMA告知顯的切换状态, 以便 LMA根据 MN的切换状态做出相应的操作。 现有 技术中 MAG获得顯切换状态的方法包括:新的 MAG可以通过 MAG间的上下文传输 从旧的 MAG获得顯的切换状态, 或者新的 MAG使用 AAA架构, 从 AAA获得顯的切 换状态。
发明人在实现本发明的过程中发现:通过 MAG间的上下文传输获得顯的切 换状态时, 需要 MAG间的上下文接口, 以便新的 MAG从旧的 MAG获得切换指示等 相关信息, 但在某些场景下可能不能如期进行, 如异质网络切换、 MAG之间没 有安全联盟等; 而使用 AAA架构获得顯的切换状态时, 则不能在 AAA不保存接 口相关信息或者不使用 AAA结构的场景中使用。现有技术解决方案的应用范围 小, 有一定局限性, 服务质量差。 发明内容
本发明实施例提供一种状态切换信息处理方法、 移动接入网关和移动 终端。 解决了现有技术解决方案的应用范围小, 有一定局限性的缺陷, 在移 动终端接入 PMIPv6网络或者在 PMIP网络切换时, 移动接入网关代替移动终 端向本地移动锚点注册前, 实现移动接入网关通过移动终端的接口使用指 示信息获取移动终端状态切换。
本发明实施例提供一种状态切换信息处理方法, 包括:
接收状态切换通知消息,所述状态切换通知消息包括接口使用指示信息; 根据所述接口使用指示信息, 确定切换指示选项值;
生成并发送代理绑定更新消息, 所述代理绑定更新消息包括所述切换指 示选项值。
本发明实施例还提供一种移动接入网关, 包括:
第一接收模块, 用于接收状态切换通知消息, 所述状态切换通知消息包 括接口使用指示信息;
确定模块, 用于根据所述接口使用指示信息, 确定切换指示选项值; 第一发送模块, 用于生成并发送代理绑定更新消息, 所述代理绑定更新 消息包括所述切换指示选项值。
本发明实施例还提供一种移动终端, 包括:
第二发送模块, 用于发送状态切换通知消息, 所述状态切换通知消息包 括接口使用指示信息;
第二接收模块,用于接收根据所述接口使用指示信息返回的路由器通告, 所述路由器通告包括为所述移动终端分配的家乡前缀。 本发明实施例提供的状态切换信息处理方法、移动接入网关和移动终端, 通过移动终端向移动接入网关发送携带接口使用指示信息的状态切换通知消 息, 将移动终端的切换状态告知移动接入网关; 移动接入网关接收并根据该 状态切换通知消息中的接口使用指示信息对代理绑定更新进行配置, 实现移 动接入网关通过移动终端的接口使用指示信息获取移动终端状态切换, 提高 了用户接入成功的机率, 应用范围广泛, 可以提高为用户提供的接入服务质 量。 附图说明
图 1为现有 PMIPv6网络系统结构示意图;
图 2为本发明状态切换信息处理方法实施例一的流程图;
图 3为本发明状态切换信息处理方法实施例二的信令流程图;
图 4为本发明状态切换信息处理方法实施例三的信令流程图;
图 5为本发明移动接入网关实施例一结构示意图;
图 6为本发明移动接入网关实施例二结构示意图;
图 7为本发明移动终端实施例一结构示意图;
图 8为本发明移动终端实施例二结构示意图。 具体实施方式
下面通过附图和实施例, 对本发明的技术方案做进一步的详细描述。 图 2为本发明状态切换信息处理方法实施例一的流程图。 如图 2所示, 该状态切换信息处理方法包括:
200、接收状态切换通知消息, 所述状态切换通知消息包括接口使用指示 信息;
在 PMIPv6网络中, 移动终端接入网络的接口发生切换时, 需要将接口的 切换状态发送给移动接入网关, 移动接入网关接收移动终端发送的状态切换 通知消息,所述状态切换通知消息中可以包括移动终端的接口使用指示信息, 所述接口使用指示信息用于标识移动终端通过接入移动接入网关的状态切 换。 其中, 所述状态切换通知消息可以为路由器请求消息或者第一配置请求 消息。 所述接口使用指示信息可以用于标识: 移动终端通过新的接口接入移 动接入网关, 或同一移动终端从第一接口接入切换到第二接口接入移动接入 网关, 或同一移动终端通过同一接口接入新的移动接入网关。 其中, 所述移 动终端通过新的接口接入移动接入网关可以为两种情况: 一是接入该移动接 入网关的是新移动终端的任一接口, 一是已接入该移动接入网关的是移动终 端的未接入该移动接入网关的接口; 所述同一移动终端从第一接口接入切换 到第二接口接入移动接入网关可以为两种情况: 一是同一移动终端从第一接 口接入切换到第二接口接入同一移动接入网关, 一是同一移动终端从第一接 口接入切换到第二接口接入另一移动接入网关; 所述同一移动终端通过同一 接口接入新的移动接入网关具体为: 同一移动终端通过同一接口接入不同的 移动接入网关。
201、 根据所述接口使用指示信息, 确定切换指示选项值;
移动接入网关接收到移动终端发送的状态切换通知消息后, 根据所述状 态切换通知消息后中的接口使用指示信息, 确定切换指示选项值, 具体为两 种情况:
情况一, 当移动终端向移动接入网关发送的状态切换通知消息为路由器 请求消息时, 所述移动接入网关根据所述接口使用指示信息确定切换指示选 项值的方法可以分为三种:
第一, 当状态切换通知消息中的接口使用指示信息标识移动终端通过新 的接口接入移动接入网关时, 确定切换指示选项值为指示本地移动锚点为所 述移动终端分配唯一的家乡前缀; 第二, 当状态切换通知消息中的接口使用指示信息标识同一移动终端从 第一接口接入切换到第二接口接入移动接入网关时, 确定切换指示选项值为 指示本地移动锚点为所述移动终端分配与所述第一接口所使用的相同的家乡 前缀;
第三, 当状态切换通知消息中的接口使用指示信息标识同一移动终端通 过同一接口接入新的移动接入网关时, 确定切换指示选项值为指示本地移动 锚点为所述移动终端分配与所述同一接口所使用的相同的家乡前缀。
情况二, 当移动终端向移动接入网关发送的状态切换通知消息为第一配 置请求消息时, 移动接入网关判断第一配置请求中的接口使用指示信息是否 是用于标识同一移动终端从第一接口接入切换到第二接口接入或用于标识同 一移动终端通过同一接口接入新的移动接入网关; 并判断该移动接入网关上 是否存储有该移动终端切换前所使用的家乡地址; 当该接口使用指示信息用 于标识同一移动终端从第一接口接入切换到第二接口接入或用于标识同一移 动终端通过同一接口接入新的移动接入网关时, 且当该移动接入网关上存储 有所述移动终端切换前所使用的家乡地址时, 向所述移动终端返回移动终端 切换前所使用的家乡地址。 其中, 上述判断接口使用指示信息是否用于标识 同一移动终端从第一接口接入切换到第二接口接入或用于标识同一移动终端 通过同一接口接入新的移动接入网关, 与判断移动接入网关上是否存在移动 终端切换前所使用的家乡地址可以不分先后。 另外, 所述移动接入网关向所 述移动终端返回所述家乡地址具体可以为, 所述移动接入网关向所述移动终 端返回点到点协议 ( oint-to-point protocol,以下简称 PPP ) 否定消息, 所述 PPP否定消息包括移动终端切换前所使用的家乡地址。 移动终端接收到 所述 PPP否定消息后, 根据所述 PPP否定消息生成携带所述接口使用指示信 息和移动终端切换前所使用的家乡地址的第二配置请求消息, 并发送给移动 接入网关; 移动接入网关接收移动终端发送的第二配置请求消息后, 当得知 其中包括的家乡地址与该移动接入网关自身所存储的该移动终端切换前所使 用的家乡地址一致时,则向所述移动终端返回第二配置请求消息的确认消息。 其中, 当接口使用指示信息用于标识同一移动终端从第一接口接入切换到第 二接口接入时, 移动终端切换所使用的家乡地址为该移动终端第一接口切换 前所使用的家乡地址; 当接口使用指示信息用于标识同一移动终端通过同一 接口接入新的移动接入网关时, 移动终端切换所使用的家乡地址为该移动终 端同一接口从旧的移动接入网关切换到新的移动接入网关前与旧的移动接入 网关接入时所使用的家乡地址。 其中, PPP否定消息可以为在 PPP 中的 NAK 消息, 用于否定移动终端发送的第一配置请求(conf i gure reques t ) 消息, 移动终端接收到该 NAK消息后,需要向移动接入网关发送第二配置请求消息, 等待移动接入网关返回确认消息 (ACK消息) 。
若该移动接入网关上判断未存储有所述移动终端切换前所使用的家乡地 址, 则向该移动终端返回第一配置请求的确认消息, 表示移动接入网关未向 移动终端成功发送该移动终端切换前所使用的家乡地址。
当接收到第一配置请求或第二配置请求并返回确认消息后, 移动接入网 关根据所述接口使用指示信息确定切换指示选项值的方法也可以分为三种: 第一, 当状态切换通知消息中的接口使用指示信息标识移动终端通过新 的接口接入移动接入网关时, 确定切换指示选项值为指示本地移动锚点为所 述移动终端分配唯一的家乡前缀;
第二, 当状态切换通知消息中的接口使用指示信息标识同一移动终端从 第一接口接入切换到第二接口接入移动接入网关时, 确定切换指示选项值为 指示本地移动锚点为所述移动终端分配与所述第一接口所使用的相同的家乡 前缀;
第三, 当状态切换通知消息中的接口使用指示信息标识同一移动终端通 过同一接口接入新的移动接入网关时, 确定切换指示选项值为指示本地移动 锚点为所述移动终端分配与所述同一接口所使用的相同的家乡前缀。
202、 生成并发送代理绑定更新消息, 所述代理绑定更新消息包括切换指 示选项值。
在移动接入网关根据状态切换通知消息中的接口使用指示信息对切换指 示选项值进行更新后, 生成携带所述切换指示选项值的代理绑定更新消息, 并将该代理绑定更新消息发送给本地移动锚点。
在 202之后, 本地移动锚点接收根据接口使用指示信息确定的代理绑定 更新消息, 并根据代理绑定更新消息中的切换指示选项值的不同, 可以分为 以下三种操作:
第一, 当所述代理绑定更新消息中的切换指示选项值用于标识所述移动 终端通过新的接口接入时, 为所述移动终端分配唯一的家乡前缀, 并可以创 建一个新的緩存绑定条目; 所述唯一的家乡前缀可以是一个家乡前缀, 也可 以是一个家乡前缀组, 即包含多个家乡前缀。
第二, 当所述代理绑定更新消息中的切换指示选项值用于标识同一移动 终端从第一接口接入切换到第二接口接入时, 通过比较代理绑定更新消息与 已维护的绑定緩存条目, 为所述移动终端分配与所述第一接口所使用的相同 的家乡前缀;
第三, 当所述代理绑定更新消息中的切换指示选项值用于标识同一移动 终端通过同一接口接入新的移动接入网关时, 通过比较代理绑定更新消息与 已维护的绑定緩存条目, 为所述移动终端分配与该同一接口所使用的相同的 家乡前缀。
其中, 本地移动锚点根据切换指示选项值的不同为移动终端分配家乡前 缀的过程具体可以包括: 本地移动锚点向移动接入网关发送携带家乡前缀的 代理绑定确认消息(PBA);移动接入网关根据该代理绑定确认消息中家乡前缀 生成路由器通告, 并向该移动终端发送携带该家乡前缀的路由器通告。 其中, 移动接入网关接收所述本地移动锚点发送的代理绑定确认消息, 所述代理绑 定确认消息包括为所述移动终端分配的家乡前缀, 可以包括以下三种情况: 一是当所述代理绑定确认消息中的切换指示选项值用于标识所述移动终端通 过新的接口接入时, 移动接入网关接收本地移动锚点发送的为所述移动终端 分配唯一的家乡前缀代理绑定确认消息; 二是当所述代理绑定确认消息中的 切换指示选项值用于标识同一移动终端从第一接口接入切换到第二接口接入 时, 移动接入网关接收本地移动锚点发送的为所述移动终端分配与所述第一 接口所使用的相同的家乡前缀代理绑定确认消息; 三是当所述代理绑定确认 消息中的切换指示选项值用于标识同一移动终端通过同一接口接入新的移动 接入网关时, 移动接入网关接收本地移动锚点发送的为所述移动终端分配与 所述同一接口所使用的相同的家乡前缀代理绑定确认消息。
当接口使用指示信息用于标识所述移动终端通过新的接口接入时, 移动 终端接收到的路由器响应中携带分配给该移动终端的唯一的家乡前缀, 移动 终端根据该唯一家乡前缀为发送状态切换通知消息的接口配置相应的家乡地 址; 当接口使用指示信息用于标识同一移动终端从第一接口接入切换到第二 接口接入或用于标识同一移动终端通过同一接口接入新的移动接入网关时, 移动终端路由器响应中携带该移动终端切换前所使用的家乡前缀, 移动终端 根据该家乡前缀为发送状态切换通知消息的同一接口配置相应的家乡地址, 如果移动终端向移动接入网关发送的是第一配置请求消息, 则移动终端还可 以 居该移动终端的家乡前缀检验该移动终端上已配置的家乡地址是否正 确, 如果不正确, 则按照该家乡前缀重新配置家乡地址。 然后该移动终端才艮 据自身已配置的家乡地址与该网络进行通讯。 本发明状态切换信息处理方法 实施例一中通过移动终端向移动接入网关发送携带接口使用指示信息的状态 切换通知消息, 将移动终端的切换状态告知移动接入网关; 移动接入网关接 收并根据该状态切换通知消息中的接口使用指示信息对代理绑定更新进行配 置, 实现移动接入网关通过移动终端的接口使用指示信息获取移动终端状态 切换, 应用范围广泛, 提高了用户接入成功的机率, 从而可以提高为用户提 供的接入服务质量。
图 3为本发明状态切换信息处理方法实施例二的信令流程图, 本实施例 中与本发明方法实施例一的对应关系如下: MN为移动终端, MAG为移动接入 网关, LMA为本地移动锚点, RS消息为状态切换通知消息, H0为 RS消息中 携带的接口使用指示信息。
如图 3所示, 该状态切换信息处理方法包括:
300、新 MAG接收 MN发送的路由器请求(RS)消息,所述路由器请求(RS) 消息中携带接口使用指示信息 (H0) ;
其中顯通过设置 H0的值向新 MAG通告 MN当前接口使用情况, H0可以 通过扩展 RS消息获得,如在 RS消息中增加相应标识位或者增加新的选项等。 在 RS消息中增加相应标识位的情况:例如可以在 RS消息的保留( reserve ) 字段设置 HO的标识位。 HO(Handoff)可以通过不同的值表示不同的情况, 例 如 H0采用类型、 长度、 值(Type, Length, Value; 以下简称 TLV)格式, 相应的标识或值定义为:
如果 H0为 "1" ,表示有新接口接入 (Attachment over a new interface); 如果 HO 为 "2" , 表示 MN 不同接口间的切换(Handoff between two different interfaces of the mobile);
如果 HO为" 3",表示顯同一同接口在不同 MAG间的切换(Handoff between mobile access gateways for the same interface);
如果 HO为 "4" , 表示切换^ 态不确定(Handoff state unknown); 如果 HO 为 "5" , 表示切换状态未改变(Handoff state not changed
(Re-registration))。
以上 HO中的值可以根据不同的情况另行设定, H0采用 TLV格式仅作为 一种举例说明。
301、 新 MAG根据所述接口使用指示信息, 确定切换指示选项值; 例如: 接口使用指示信息中选项值为 "1" , 表示有新接口请求接入 MAG, 分为两种情况: 该新接口可以是已接入 PMIPv6网络 MAG的 MN上新接口 b , 也可以是从未接入该 PMIPv6网络 MAG的新的 MN上的新接口 a , 此时, MAG可 以将切换指示选项值确定为 "1 " ;
接口使用指示信息中选项值为 "2" , 表示同一顯上的不同接口间的切 换, 分为两种情况: 从顯的接口 a与 MAG的连接切换到 MN的接口 b与 MAG 的连接,也可以是从顯的接口 a与旧 MAG的连接切换到 MN的接口 b与新 MAG 的连接, 此时, MAG可以将切换指示选项值确定为 "2" ;
接口使用指示信息中选项值为 " 3" ,表示同一接口在不同 MAG间的切换, 该切换可以是从 MN的接口 a与旧 MAG的连接切换到 MN的接口 a与新 MAG的 连接, 此时, MAG可以将切换指示选项值确定为 "3" 。
其中, 图 3所示的是顯从旧 MAG切换到新 MAG的情况, 此时 H0的值可 以为 "2" , 表示从 MN的接口 a与旧 MAG的连接切换到 MN的接口 b与新 MAG 的连接; H0的值也可以为 "3" , 表示从顯的接口 a与旧 MAG的连接切换到 顯的接口 a与新 MAG的连接。 MAG根据 H0的值设定切换指示选项值, 切换指 示选项值可以是与 H0相同的数值, 也可以用其他标识符表示。
302、 新 MAG向 LMA发送代理绑定更新消息 ( PBU ) , 所述代理绑定更新 消息包括所述切换指示选项值;
MAG根据所述接口使用指示信息中不同的 H0的值设定切换指示选项值, 生成携带切换指示选项值的 PBU, 并发送 PBU至 LMA。
303、 新 MAG接收 LMA发送的代理绑定确认消息 ( PBA ) , 所述 PBA中携 带所述顯的家乡前缀( HNP ) ;
LMA接收到 MAG发送的 PBU后, 根据 PBU中的切换指示选项值更新自己 的绑定信息, 为 MN的接口分配家乡前缀(HNP ) , 并生成携带该 HNP 的 PBA , 发送该 PBA给 MAG;
例如:按照上述 H0的含义, LMA接收到 MAG发送的 PBU后进行如下操作: 当 H0为 " 1 " 时, LMA为 MN分配唯一的家乡前缀, 并创建一个新的绑定 緩存条目;
当 H0为 "2"时, LMA比较 PBU与已维护的 MN的绑定緩存条目,通过 PBA 分配与切换前相同的 HNP至 MN(即切换前后, MN不同接口仍将使用相同前缀); 当 H0为 " 3"时, LMA比较 PBU与已维护的 MN的绑定緩存条目,通过 PBA 分配与切换前相同的 HNP至 MN(即切换前后,顯同一接口仍将使用相同前缀); 当 H0为 "4" 时, LMA根据情况分配相应前缀至 MN;
当 H0为" 5"时,更新 LMA上对应的绑定緩存条目的生存时间( l i fet ime ); 然后, MAG接收 LMA发送的 PBA, 并根据该 PBA中携带的 HNP生成路由器 响应 (RA ) 。
304、 新 MAG向 MN发送 RA , 所述 RA中携带所述顯的 HNP。
本发明状态切换信息处理方法实施例二中通过移动终端向移动接入网关 发送携带接口使用指示信息的路由器请求消息, 将移动终端的切换状态告知 移动接入网关; 移动接入网关接收并根据该路由器请求消息中的接口使用指 示信息对代理绑定更新进行配置,在 PMIPv6网络中的网络层实现了移动接入 网关获取移动终端发生状态切换时的状态切换信息, 可以提高用户接入网络 成功的机率, 从而提高服务质量。
图 4为本发明状态切换信息处理方法实施例三的信令流程图, 本实施例 中与本发明方法实施例一的对应关系如下: MN为移动终端, MAG为移动接入 网关, 配置请求(conf i gure reques t ) 消息为状态切换通知消息, H0 为接 口使用指示信息, HoA为顯切换前所使用的家乡地址, LMA为本地移动锚点。
如图 4所示, 该状态切换信息处理方法包括: 400、新 MAG接收第一配置请求消息, 所述第一配置请求消息中携带接口 使用指示信息 (H0 ) ;
其中, 第一配置请求消息中除了携带 IPv6CP ( RFC1 332 , RFC5072 )定义 的相关选项外, 还携带 H0 , 其中 H0的值的定义方式可以采用和本发明实施 例二中相同的 TLV格式,并且在本实施例中 H0的数值的含义采用实施例二中 H0的数值对应的含义为例进行说明。
401、 新 MAG根据所述接口使用指示信息 (H0 ) , 确定切换指示选项值; MAG接收到 MN发送的携带所述接口使用指示信息(H0 ) 的第一配置请求 消息之后, 根据 H0的值确定切换指示选项值之前可以包括以下:
4011、 新 MAG判断 H0的值, 如果 H0为 "2" 或 " 3" , 执行 4012 , 否则, 执行 4015 ;
4012、 新 MAG判断是否存储该顯的相关信息 (包括该顯切换前使用的 家乡地址 HoA、 家乡前缀 HNP等), 如果是, 执行 401 3 , 如果否, 执行 4015 ;
401 3、新 MAG向 MN返回携带 IP为 MN切换前所使用的 HoA的 PPP否定消 息 (NAK消息) ;
4014、 新 MAG接收顯发送第二配置请求消息(配置请求消息), 该配置 请求消息中携带的 H0的值和 IP为 MN切换前所使用的 HoA;
4015、 新 MAG向 MN返回确认消息 ( ACK消息 ) ;
在 401之后还可以包括:
402、 新 MAG生成携带切换指示选项值的 PBU, 并将 PBU发送给 LMA;
403、 新 MAG接收 LMA发送的携带该 MN的 HNP的 PBA消息;
404、 新 MAG向 MN发送携带该顯的 HNP的 R A消息。
上述状态切换信息处理方法实施例三适用于通过点到点协议( po int-to -po int pro toco l,以下简称 PPP ) 来建立链路层连接的网络环境中, PPP作为 一种提供在点到点链路上承载网络层数据包的链路层协议, 处于 TCP/ IP协议 栈的第二层, 主要被设计用来在支持全双工的同异步链路上进行点到点之间 的数据传输。 PPP定义了一整套的协议,主要有三类协议族:链路控制协议族、 网络控制协议族和 PPP扩展协议族。 其中, 链路控制协议族主要用于建立、 拆 除和监控 PPP数据链路, 同时协商一些链路属性; 网络控制协议族主要用于协 商在该数据链路上所传输的网络层数据包的类型以及网络层协议自身的一些 属性(如 IPCP要协商 IP地址等) ; PPP扩展协议族主要用于提供对 PPP功能的 进一步支持, 实际上就是提供一些特性服务, 基于 PPP协议框架设计的一些扩 展协议。 例如, 用于网络安全方面的验证协议。
本发明状态切换信息处理方法实施例三中通过移动终端向移动接入网关 发送携带接口使用指示信息的第一配置请求消息, 将移动终端的切换状态告 知移动接入网关; 移动接入网关接收该第一配置请求消息后, 先判断该移动 接入网关(MAG )是否有该移动终端(顯)的相关信息(如家乡地址等) , 如 果有, 再判断该第一配置请求消息中的接口使用指示信息是否用于标识同一 移动终端从第一接口接入切换到第二接口接入(对应于实施例二中的 H0 为 "2 " )或者用于标识同一移动终端通过同一接口接入新的移动接入网关(对 应于实施例二中的 H0为 " 3" ,即图 4所示的从旧 MAG切换到新 MAG的情况), 如果是, 则向该移动终端返回移动终端切换前所使用的家乡地址(ΗοΑ ) , 可 以通过返回携带移动终端切换前所使用的 HoA的 PPP否定消息 (NAK消息) 来实现。 因为第一配置请求消息中不一定携带移动终端切换前所使用的 HoA , 或者第一配置请求消息中携带的地址信息不一定等于移动终端切换前所使用 的 HoA , 所以需要向移动终端返回 NAK消息, 并且移动终端需要向 MAG发送 携带移动终端切换前所使用的 HoA的第二配置请求消息, 当该第二配置请求 消息中的 HoA与 MAG上存储的移动终端切换前所使用的 HoA相匹配时, 向该 移动终端返回第二配置请求消息的确认消息, 代表请求成功; 接着对代理绑 定更新消息 (PBU ) 中的切换指示选项值进行配置; 然后 MAG将 PBU发送至 LMA; LMA向 MAG返回携带 LMA为 MN分配的 HNP的 PBA; MAG向 MN返回携带 该 HNP的 RA; 此时, ΜΝ可以根据该 RA中的 HNP检验 MN上的家乡地址的是否 正确, 如果不正确, 则才艮据该 HNP重新配置家乡地址。 而当 MAG上没有 MN相 关信息的状态 (例如 H0的值为 "1" ) 时, 直接对 PBU中的切换指示选项值 进行酉己置, ,然后 MAG ^夺 PBU发送至 LMA; LMA向 MAG 回携带 LMA为 MN分酉己 的 HNP的 PBA; MAG向 MN返回携带 HNP的 RA; 此时, MN根据该 RA中的 HNP 配置新的家乡地址。 当 MN才艮据 RA中的 HNP确定自己的 HoA后, 通过该 Ho A 进行通讯。
本发明状态切换信息处理方法实施例三, 可以在链路层实现移动接入网 关通过移动终端的接口使用指示信息获取移动终端状态切换, 提高了用户接 入成功的机率, 保证通讯顺畅, 从而提高业务服务质量。
本领域普通技术人员可以理解: 实现上述方法实施例的全部或部分步骤 可以通过程序指令相关的硬件来完成, 前述的程序可以存储于一计算机可读 取存储介质中, 该程序在执行时, 执行包括上述方法实施例的步骤; 而前述 的存储介质包括: R0M、 RAM, 磁碟或者光盘等各种可以存储程序代码的介质。
图 5为本发明移动接入网关实施例一结构示意图, 如图 5所示, 该移动 接入网关包括第一接收模块 51、 确定模块 52和第一发送模块 53 , 其中第一 接收模块 51用于接收状态切换通知消息,所述状态切换通知消息包括接口使 用指示信息; 确定模块 52与第一接收模块 51连接, 用于根据所述接口使用 指示信息, 确定切换指示选项值; 第一发送模块 53与确定模块 52连接, 用 于生成并发送代理绑定更新消息, 所述代理绑定更新消息包括所述切换指示 选项值。
具体地,移动接入网关中的第一接收模块 51接收移动终端发送来的包括 接口使用指示信息的状态切换通知消息后,通过确定模块 52根据所述接口使 用指示信息, 确定切换指示选项值, 并由第一发送模块 53将携带有确定模块 52得到的切换指示选项值的代理绑定更新消息发送给本地移动锚点, 请求本 地移动锚点根据移动终端的切换状态分配家乡前缀, 移动接入网关向移动终 端转发该家乡前缀, 移动终端为保证正常通信重新配置接口的相关信息。
本实施例提供的移动接入网关, 在向本地移动锚点发送代理绑定更新消 息之前,通过移动终端发送的携带有接口使用指示信息的状态切换通知消息, 能够根据所述接口使用指示信息确定移动终端的切换状态, 并配置切换指示 选项值, 将移动终端的切换状态信息准确地上报给本地移动锚点进行代理更 新, 保证移动终端发生接口切换后的通信顺畅, 提高业务服务质量。
图 6为本发明移动接入网关实施例二结构示意图, 如图 6所示, 在本发 明移动接入网关实施例一的基石出上, 该移动接入网关包括第一接收模块 51、 确定模块 52、 第一发送模块 53。 其中确定模块 52 包括第一确定单元 521、 第二确定单元 522和第三确定单元 523 , 其中第一确定单元 521用于根据用 于标识移动终端通过新的接口接入的所述接口使用指示信息, 确定切换指示 选项值, 所述切换指示选项值用于指示本地移动锚点为所述移动终端分配唯 一的家乡前缀; 第二确定单元 522用于根据用于标识同一移动终端从第一接 口接入切换到第二接口接入的所述接口使用指示信息,确定切换指示选项值, 所述切换指示选项值用于指示本地移动锚点为所述移动终端分配与所述第一 接口所使用的相同的家乡前缀; 第三确定单元 523用于根据用于标识同一移 动终端通过同一接口接入新的移动接入网关的所述接口使用指示信息, 确定 切换指示选项值, 所述切换指示选项值用于指示本地移动锚点为所述移动终 端分配与所述同一接口所使用的相同的家乡前缀。
确定模块 52根据移动终端发送的不同的接口使用指示信息,应用对应的 功能模块确定切换指示选项值。 当移动终端发送的接口使用指示信息标识移 动终端通过新的接口接入时, 由第一确定单元 521确定切换指示选项值为能 够指示本地移动锚点为所述移动终端分配唯一的家乡前缀的具体信息值; 当 移动终端发送的接口使用指示信息标识同一移动终端从第一接口接入切换到 第二接口接入时, 由第二确定单元 522确定切换指示选项值为能够指示本地 移动锚点为所述移动终端分配与所述第一接口所使用的相同的家乡前缀的具 体信息值; 当移动终端发送的接口使用指示信息标识同一移动终端通过同一 接口接入新的移动接入网关时, 由第三确定单元 523确定切换指示选项值为 能够指示本地移动锚点为所述移动终端分配与所述同一接口所使用的相同的 家乡前缀的具体信息值。
由于移动终端发送来的状态切换通知消息可以是路由器请求消息, 也可 以是第一配置请求消息, 无论移动终端以何种消息形式发送状态切换通知消 息, 确定模块均能够根据其中的信息确定发给本地移动锚点的代理绑定更新 消息中携带的切换指示选项值。 当移动终端发送来的是第一配置请求消息时, 本发明实施例移动接入网关还可以包括第一判断模块 54和第二判断模块 55 , 其中第一判断模块 54与第一接收模块 51连接, 用于判断是否存储有所述移 动终端切换前所使用的家乡地址;第二判断模块 55与第一判断模块 54连接, 用于在所述移动接入网关上存储有所述家乡地址时, 判断所述接口使用指示 信息类型。
本发明实施例移动接入网关还可以包括存储模块 56 , 用于存储所述用户 终端的家乡地址, 第一判断模块 54根据存储模块 56中存储的家乡地址判断 是否存储有所述移动终端切换前所使用的家乡地址;第二判断模块 55判断所 述接口使用指示信息类型是否为用于标识同一移动终端从第一接口接入切换 到第二接口接入或用于标识同一移动终端通过同一接口接入新的移动接入网 关, 其中第一判断模块 54的判断过程与第二判断模块 55的判断过程可以没 有先后顺序; 第一发送模块 53向所述移动终端发送所述家乡地址。 存储模块 56还可以存储所述移动终端的家乡前缀。 移动接入网关在将携带确认后的切 换指示选项值代理绑定更新消息发送给本地移动锚点后,第一接收模块 51接 收到本地移动锚点返回的携带所述家乡前缀的代理绑定确认消息 (PBA )后, 向移动终端发送携带该家乡前缀的路由器通告 A ) , 在此转发过程中, 移 动接入网关也可以将该家乡前缀存储在存储模块 56中。
本实施例提供的移动接入网关能够根据移动终端发送的接口使用指示信 息, 确定切换指示选项值, 并将切换指示选项值信息发送给本地移动锚点进 行代理更新, 在保证获得的切换状态信息的准确性的前提下, 保证通信顺畅, 提高移动终端发生接口切换时的业务服务质量。
图 7为本发明移动终端实施例一结构示意图, 如图 7所示, 该移动终端 包括第二发送模块 71和第二接收模块 72 , 其中第二发送模块 71用于发送状 态切换通知消息, 所述状态切换通知消息包括接口使用指示信息; 第二接收 模块 72用于接收根据所述接口使用指示信息返回的路由器通告,所述路由器 通告包括为所述移动终端分配的家乡前缀。
具体的,移动终端的第二发送模块 71向移动接入网关发送包括接口使用 指示信息的状态切换通知消息; 在移动接入网关向本地移动锚点发送根据所 述接口使用指示信息配置的代理绑定更新消息, 并接收本地移动锚点发送根 据所述代理绑定更新消息分配的所述移动终端的家乡前缀以后, 第二接收模 块 72接收移动接入网关发送的携带该家乡前缀的路由器通告。
本实施例提供的移动终端, 能够在其发生状态切换时生成状态切换通知 消息, 所述状态切换通知消息中携带可以表示该移动终端切换状态的接口使 用指示信息, 并将携带该接口使用指示信息的状态切换通知消息发送给移动 接入网关, 从而为移动接入网关根据该接口使用指示信息配置其代理绑定更 新消息, 并将该消息发送至本地移动锚点, 为该移动终端分配家乡前缀, 保 证在移动终端发生接口切换后,移动接入网关可以方便获取该状态切换信息, 从而保证用户接入成功率高, 提高业务服务质量。
图 8为本发明移动终端实施例二结构示意图, 如图 8所示, 在本发明移 动终端实施例一的基础上, 该移动终端包括第二发送模块 71、 第二接收模块 72、 配置模块 73。 其中第二发送模块 71 用于发送状态切换通知消息, 所述 状态切换通知消息包括接口使用指示信息, 还包括接口使用指示地址信息, 其中所述状态切换通知消息可以为路由器请求消息或第一配置请求消息; 配 置模块 73与第二接收模块 72连接, 用于根据接收到的为该移动终端分配的 家乡前缀为所述移动终端的接口配置家乡地址。
当该移动终端发送的是所述第一配置请求消息时,第二接收模块 72还可 以用于接收根据所述接口使用指示信息返回的 PPP否定消息 (NAK消息) , 所述 NAK消息包括所述移动终端切换前所使用的家乡地址, 表示移动终端向 移动接入网关发送的状态切换通知消息请求未成功; 此时, 第二发送模块 71 向移动接入网关发送根据 NAK消息中的家乡地址生成的第二配置请求消息, 第二配置请求消息中包括所述接口使用指示信息和移动终端切换前所使用的 家乡地址; 然后, 第二接收模块 72接收移动接入网关发送的所述第二配置请 求消息的确认消息 CK消息) , 所述 ACK消息表示移动终端向移动接入网 关发送的状态切换通知消息请求已成功。
在第二接收模块 72接收到移动接入网关返回的 ACK消息后,移动接入网 关向本地移动锚点发送代理绑定更新消息, 并接收本地移动锚点发送根据该 代理绑定更新消息分配的该移动终端的家乡前缀, 并将携带所述家乡前缀的 路由器通告发送给该移动终端。第二接收模块 72接收移动接入网关发送的携 带该家乡前缀的路由器通告; 配置模块 73根据第二接收模块 72接收的家乡 前缀配置该移动终端的家乡地址。
本实施例提供的移动终端, 能够在其发生状态切换时生成状态切换通知 消息, 所述状态切换通知消息中携带可以表示该移动终端切换状态的接口使 用指示信息, 并将携带该接口使用指示信息的状态切换通知消息发送给移动 接入网关, 并在接收到本地移动锚点为该移动终端分配家乡前缀后, 根据该 家乡前缀为该移动终端分配家乡地址, 在移动终端发生状态切换时, 实现了 将移动终端的切换状态告知移动接入网关, 保证了移动终端发生状态切换后 的通信顺畅, 提高了业务服务质量。
最后应说明的是: 以上实施例仅用以说明本发明的技术方案而非对其进行 限制, 尽管参照较佳实施例对本发明进行了详细的说明, 本领域的普通技术 人员应当理解: 其依然可以对本发明的技术方案进行修改或者等同替换, 而 这些修改或者等同替换亦不能使修改后的技术方案脱离本发明技术方案的精 申和范围。

Claims

权 利 要 求
1、 一种状态切换信息处理方法, 其特征在于, 包括:
接收状态切换通知消息,所述状态切换通知消息包括接口使用指示信息; 根据所述接口使用指示信息, 确定切换指示选项值;
生成并发送代理绑定更新消息, 所述代理绑定更新消息包括所述切换指 示选项值。
2、 根据权利要求 1所述的状态切换信息处理方法, 其特征在于, 所述根 据所述接口使用指示信息, 确定切换指示选项值包括:
根据用于标识移动终端通过新的接口接入的所述接口使用指示信息, 确 定切换指示选项值, 所述切换指示选项值用于指示本地移动锚点为所述移动 终端分配唯一的家乡前缀; 或
根据用于标识同一移动终端从第一接口接入切换到第二接口接入的所述 接口使用指示信息, 确定切换指示选项值, 所述切换指示选项值用于指示本地 移动锚点为所述移动终端分配与所述第一接口所使用的相同的家乡前缀; 或 根据用于标识同一移动终端通过同一接口接入新的移动接入网关的所述 接口使用指示信息, 确定切换指示选项值, 所述切换指示选项值用于指示本 地移动锚点为所述移动终端分配与所述同一接口所使用的相同的家乡前缀。
3、 根据权利要求 1所述的状态切换信息处理方法, 其特征在于, 所述 状态切换通知消息为路由器请求消息。
4、 根据权利要求 2所述的状态切换信息处理方法, 其特征在于, 所述 状态切换通知消息为第一配置请求消息。
5、 根据权利要求 4所述的状态切换信息处理方法, 其特征在于, 所述根 据所述接口使用指示信息, 确定切换指示选项值之前包括:
当所述接口使用指示信息用于标识同一移动终端从第一接口接入切换到 第二接口接入或用于标识同一移动终端通过同一接口接入新的移动接入网关 时, 且当存储有所述移动终端切换前所使用的家乡地址时, 向所述移动终端 返回所述家乡地址;
接收第二配置请求消息, 所述第二配置请求消息包括所述接口使用指示 信息和所述家乡地址。
6、 根据权利要求 5所述的状态切换信息处理方法, 其特征在于, 所述向 所述移动终端返回所述家乡地址具体为:
向所述移动终端返回点到点协议 PPP否定消息, 所述 PPP否定消息包括 所述家乡地址。
7、 根据权利要求 5所述的状态切换信息处理方法, 其特征在于, 所述接 收第二配置请求消息之后包括:
向所述移动终端返回所述第二配置请求消息的确认消息。
8、 根据权利要求 1或 2所述的状态切换信息处理方法, 其特征在于, 所 述生成并发送代理绑定更新消息之后包括:
本地移动锚点接收所述代理绑定更新消息;
当所述代理绑定更新消息中的切换指示选项值用于标识移动终端通过新 的接口接入时, 为所述移动终端分配唯一的家乡前缀; 或
当所述代理绑定更新消息中的切换指示选项值用于标识同一移动终端从 第一接口接入切换到第二接口接入时, 为所述移动终端分配与所述第一接口 所使用的相同的家乡前缀; 或 当所述代理绑定更新消息中的切换指示选项值用于标识同一移动终端通 过同一接口接入新的移动接入网关时, 为所述移动终端分配与所述同一接口 所使用的相同的家乡前缀。
9、 根据权利要求 8所述的状态切换信息处理方法, 其特征在于, 所述方 法还包括:
接收所述本地移动锚点发送的代理绑定确认消息, 所述代理绑定确认消 息包括为所述移动终端分配的家乡前缀;
向所述移动终端发送所述家乡前缀。
10、 根据权利要求 9所述的状态切换信息处理方法, 其特征在于, 所述 代理绑定确认消息包括为所述移动终端分配的家乡前缀包括:
当所述代理绑定确认消息中的切换指示选项值用于标识所述移动终端通 过新的接口接入时, 所述代理绑定确认消息包括所述本地移动锚点为所述移 动终端分配的唯一的家乡前缀; 或
当所述代理绑定确认消息中的切换指示选项值用于标识同一移动终端从 第一接口接入切换到第二接口接入时, 所述代理绑定确认消息包括为所述移 动终端分配的与所述第一接口所使用的相同的家乡前缀; 或
当所述代理绑定确认消息中的切换指示选项值用于标识同一移动终端通 过同一接口接入新的移动接入网关时, 所述代理绑定确认消息包括为所述移 动终端分配的与所述同一接口所使用的相同的家乡前缀。
11、 一种移动接入网关, 其特征在于, 包括:
第一接收模块, 用于接收状态切换通知消息, 所述状态切换通知消息包 括接口使用指示信息; 确定模块, 用于根据所述接口使用指示信息, 确定切换指示选项值; 第一发送模块, 用于生成并发送代理绑定更新消息, 所述代理绑定更新 消息包括所述切换指示选项值。
12、 根据权利要求 11所述的移动接入网关, 其特征在于, 所述确定模块 包括:
第一确定单元, 用于根据用于标识移动终端通过新的接口接入的所述接 口使用指示信息, 确定切换指示选项值, 所述切换指示选项值用于指示本地 移动锚点为所述移动终端分配唯一的家乡前缀;
第二确定单元, 用于根据用于标识同一移动终端从第一接口接入切换到 第二接口接入的所述接口使用指示信息, 确定切换指示选项值, 所述切换指 示选项值用于指示本地移动锚点为所述移动终端分配与所述第一接口所使用 的相同的家乡前缀;
第三确定单元, 用于根据用于标识同一移动终端通过同一接口接入新的 移动接入网关的所述接口使用指示信息, 确定切换指示选项值, 所述切换指 示选项值用于指示本地移动锚点为所述移动终端分配与所述同一接口所使用 的相同的家乡前缀。
13、 根据权利要求 11或 12所述的移动接入网关, 其特征在于, 所述移 动接入网关还包括:
第一判断模块,用于判断是否存储有移动终端切换前所使用的家乡地址; 第二判断模块 , 用于判断所述接口使用指示信息类型。
14、 根据权利要求 13所述的移动接入网关, 其特征在于, 所述第一发送 模块还用于向所述移动终端发送所述家乡地址。
15、 根据权利要求 14所述的移动接入网关, 其特征在于, 所述移动接入 网关还包括:
存储模块, 用于存储所述移动终端的家乡地址。
16、 一种移动终端, 其特征在于, 包括:
第二发送模块, 用于发送状态切换通知消息, 所述状态切换通知消息包 括接口使用指示信息;
第二接收模块,用于接收根据所述接口使用指示信息返回的路由器通告, 所述路由器通告包括为所述移动终端分配的家乡前缀。
17、 根据权利要求 16所述的移动终端, 其特征在于, 所述状态切换通知 消息具体为路由器请求消息或配置请求消息。
18、 根据权利要求 16或 17所述的移动终端, 其特征在于, 所述第二接 收模块还用于接收移动接入网关返回的所述移动终端切换前所使用的家乡地 址。
19、 根据权利要求 16所述的移动终端, 其特征在于还包括:
配置模块,用于根据所述家乡前缀为所述移动终端的接口配置家乡地址。
PCT/CN2009/071638 2008-06-12 2009-05-05 状态切换信息处理方法、移动接入网关和移动终端 WO2009149631A1 (zh)

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