WO2010000174A1 - 移动节点的注册、通信、切换方法及装置 - Google Patents

移动节点的注册、通信、切换方法及装置 Download PDF

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Publication number
WO2010000174A1
WO2010000174A1 PCT/CN2009/072273 CN2009072273W WO2010000174A1 WO 2010000174 A1 WO2010000174 A1 WO 2010000174A1 CN 2009072273 W CN2009072273 W CN 2009072273W WO 2010000174 A1 WO2010000174 A1 WO 2010000174A1
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WO
WIPO (PCT)
Prior art keywords
mobile node
mobility management
binding relationship
address
information
Prior art date
Application number
PCT/CN2009/072273
Other languages
English (en)
French (fr)
Inventor
张弓
潘璐伽
丰大洋
何诚
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
Publication of WO2010000174A1 publication Critical patent/WO2010000174A1/zh
Priority to US12/973,706 priority Critical patent/US9049570B2/en

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Classifications

    • 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
    • H04W8/12Mobility data transfer between location registers or mobility servers
    • 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
    • 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]

Definitions

  • the present invention relates to the field of mobile communication technologies, and in particular, to a registration, communication, and handover method and apparatus for a mobile node.
  • MIP Mobile Internet Protocol
  • MN Mobile Node
  • the MN always uses the HoA (Home Address) assigned by the Home Network to identify it, and does not change due to the change of the visited network.
  • HoA Home Address
  • CoA Care Of Address
  • the care-of address is associated, the current location of the port is identified by the CoA, and it will send its current location information to the HA (Home Agent).
  • the HA intercepts the data packet sent by the CN (Corresponding Node, peer node) to the mobile node HoA and forwards it to the MN's CoA through the tunnel.
  • the entire process is performed only at the IP layer and transparent to all layers above IP.
  • MIPv4 Mobile IPv4, Mobile IPv4
  • MIPv6 Mobile Ipv6, Mobile IPv6
  • HA in the Home Network causes most of the signaling and data transmission to pass through the device, making it Performance bottlenecks.
  • multiple HAs are used in the home network to provide support for a large number of MNs, but it is still impossible to completely solve the problem that the home network becomes a bottleneck for data traffic and processing capacity; HA not only needs to switch management for all MNs, but also to perform location. Management, resulting in complex HA design and heavy burden.
  • Embodiments of the present invention provide a distributed mobility management system and a registration, communication, and handover method and apparatus for a mobile node based on the system.
  • the mobility management anchor receives the request for obtaining an IP address sent by the mobile node
  • the mobility management anchor allocates an IP address to the mobile node, and obtains identification information of the mobile node, according to the obtaining an IP address request sent by the mobile node;
  • the mobility management anchor Based on the identification information, the mobility management anchor binds the IP address of the mobile node with the identification information, and the identification information is used to be registered to the location management server by the mobile node.
  • the mobility management anchor receives the data packet carrying the mobile node ID identifier sent by the peer node; and according to the ID identifier carried in the data packet, the mobility management anchor queries the mobile node binding relationship;
  • the mobile node moves to the adjacent network to obtain the location information of the mobile node in the source network and the routing information of the adjacent network;
  • a registration device for a mobile node provided by an embodiment of the present invention includes:
  • a receiving unit configured to receive an IP address request sent by the mobile node by the mobility management anchor; and an allocating unit: configured to obtain an IP address request according to the mobile node, where the mobility management anchor allocates an IP address to the mobile node, and obtains Identification information of the mobile node;
  • a registration unit configured to: according to the identification information, a mobility management anchor point to the mobile node
  • the IP address is bound to the identification information, and the identification information is used to be registered to the location management server by the mobile node.
  • Receiving unit used by the mobility management anchor to receive the data packet carrying the mobile node ID identifier sent by the opposite node;
  • the binding relationship query unit is configured to query, according to the ID identifier carried in the data packet, the mobility management anchor point to query the binding relationship of the mobile node;
  • a sending unit configured to send data in the data packet carrying the ID identifier to the mobile node according to the mobile node binding relationship.
  • the information acquiring unit is configured to: within the coverage of the source network, the mobile node moves to the adjacent network, and obtains location information of the mobile node in the source network and routing information of the adjacent network;
  • the address configuration information acquiring unit is configured to obtain, according to the location information of the mobile node in the source network and the neighboring network routing information, the destination address configuration information of the mobile node in the adjacent network;
  • Address information configuration unit configured to configure destination address information for the mobile node after the mobile node switches from the source network to the neighboring network.
  • a distributed mobility management system includes: at least two mobility management anchors, and any two mobility management anchors are connected to each other; the mobility management anchor connection has at least one a terminal binding relationship table is stored in the mobility management anchor point; the terminal binding relationship table stores a terminal identifier and an IP address.
  • the binding relationship table stored in the mobility management anchor point in the embodiment of the present invention where the binding relationship is an IP address assigned by the mobile node identifier and the current network to the mobile node, so that the mobile node is in the current network and the peer node
  • the communication performed can directly communicate with the opposite node by using the IP address assigned by the current network, so that the data that the mobile node communicates with the opposite node does not have to be
  • the home agent of the home network communicates directly through the mobility management anchor of the current network, and the distributed data of the home network in the prior art is large and the processing capability is low, the HA design is complex, and the load is heavy, and the embodiment of the present invention is distributed.
  • the mobility management system can balance the load, improve the data processing capability, simplify the signaling interaction of each process, and improve the processing power of the system.
  • FIG. 1 is a flowchart of a method for registering a mobile node based on a distributed mobility management system according to an embodiment of the present invention
  • FIG. 2 is a flowchart of another method for registering a mobile node based on a distributed mobility management system according to an embodiment of the present invention
  • FIG. 3 is a flowchart of another method for registering a mobile node based on a distributed mobility management system according to an embodiment of the present invention
  • FIG. 4 is a flowchart of a communication method of a mobile node based on a distributed mobility management system according to an embodiment of the present invention
  • FIG. 5 is a flowchart of another method for communicating a mobile node based on a distributed mobility management system according to an embodiment of the present invention
  • FIG. 6 is a flowchart of another method for communicating a mobile node based on a distributed mobility management system according to an embodiment of the present invention.
  • FIG. 7 is a flowchart of another method for communicating a mobile node based on a distributed mobility management system according to an embodiment of the present invention.
  • FIG. 8 is a flowchart of another method for communicating a mobile node based on a distributed mobility management system according to an embodiment of the present invention.
  • FIG. 9 is a flowchart of another method for communicating a mobile node based on a distributed mobility management system according to an embodiment of the present invention.
  • FIG. 10 is a flowchart of a handover method based on a distributed mobility management system according to an embodiment of the present invention.
  • FIG. 11 is another switching party based on a distributed mobility management system according to an embodiment of the present invention.
  • Method flow chart
  • FIG. 12 is a schematic structural diagram of a device for registering a mobile node according to an embodiment of the present invention
  • FIG. 13 is a schematic structural diagram of another device for registering a mobile node according to an embodiment of the present invention
  • FIG. 15 is a schematic structural diagram of another communication device of a mobile node based on a distributed mobility management system according to an embodiment of the present disclosure
  • FIG. 16 is a schematic structural diagram of another communication device of a mobile node based on a distributed mobility management system according to an embodiment of the present disclosure
  • FIG. 17 is a schematic structural diagram of a switching apparatus based on a distributed mobility management system according to an embodiment of the present disclosure.
  • FIG. 18 is a schematic structural diagram of another switching device based on a distributed mobility management system according to an embodiment of the present disclosure.
  • FIG. 19 is a schematic structural diagram of a distributed mobility management system according to an embodiment of the present invention
  • FIG. 20 is a schematic structural diagram of a mobility management anchor point of a distributed mobility management system according to an embodiment of the present invention.
  • a method for registering a mobile node according to an embodiment of the present invention in the process of implementing an embodiment of the present invention, the method includes:
  • the mobility management anchor receives a request for obtaining an IP address sent by the mobile node
  • the mobility management anchor According to the acquiring an IP address request sent by the mobile node, the mobility management anchor allocates an IP address to the mobile node, and obtains identifier information of the mobile node.
  • the mobility management anchor binds the IP address of the mobile node with the identifier information, and the identifier information is used to be registered to the location management service by the mobile node. Server.
  • another method for registering a mobile node according to an embodiment of the present invention in the process of implementing an embodiment of the present invention, includes:
  • the mobility management anchor receives a request for obtaining an IP address sent by the mobile node
  • the mobility management anchor According to the acquiring an IP address request sent by the mobile node, the mobility management anchor allocates an IP address to the mobile node, and obtains identifier information of the mobile node.
  • the mobility management anchor queries the binding relationship table; if the mobile node identification information exists in the mobility management anchor binding relationship table, according to the mobile node IP address And binding the binding information to refresh the binding relationship table;
  • the binding relationship is inserted according to the binding relationship between the mobile node IP address and the identification information.
  • the mobile node registers its identification information with the location management server.
  • the identifier information refers to an ID identifier of the mobile node.
  • the MMA1 After receiving the request, the MMA1 assigns an IP address to the MN as the current location identifier (Locator, that is, CoA) of the MN, and generates a random number according to the IP address (the generation algorithm is not limited, for example, a Hash algorithm, etc.)
  • the ID of the MN the HoAMN, because the identifier is random, a distributed deployment mechanism can be adopted.
  • a uniform distribution is stored therein, and the ID and IP address of the MN are saved in the MMA. Binding relationship; Since each MMA manages a certain range of IDs, MMA1 selects MMA2 to save the MN's ID-IP binding relationship according to the ID generated for the MN.
  • the MMA1 randomly generates an ID identifier according to the IP address of the MN, and the ID identifier belongs to the storage range of the MMA2.
  • (3) MMA2 first queries the current binding relationship table. If there is no information about this MN (HoAMN identifier), the MN binding relationship option is inserted. If the MN information is already available, the IP address option of the binding relationship MN entry is refreshed. And the MMA1 replies with a successful response. If the binding fails, the MMA2 replies to the MMA1 with a failure response and attaches the reason value. MMA1 will re-assign a new IP address to the MN, and generate a new HoA MN to re-select and bind;
  • MMA1 assigns a good IP address to the MN, CoA and HoA respond to the MN;
  • a communication method of a mobile node based on a distributed mobility management system is provided in the embodiment of the present invention.
  • the method includes:
  • the mobility management anchor receives the data packet that is sent by the opposite node and carries the mobile node ID identifier.
  • the mobility management anchor queries the mobile node binding relationship according to the ID identifier carried in the data packet.
  • a method for a mobile node based on a distributed mobility management system is provided in the embodiment of the present invention.
  • the mobility management anchor receives the data packet that is sent by the opposite node and carries the mobile node ID identifier.
  • the mobility management anchor point adjacent to the peer node queries the mobility management anchor point where the mobile node binding relationship is located; adjacent to the peer node
  • the data packet carrying the ID identifier will be transferred along with the query process; for example: MMAn is the mobility management anchor adjacent to the peer node; MMA2 is the mobility management anchor of the MN binding relationship. Point; if the MMAn query to the MN binding relationship exists in the MMA2 path: MMAn -> MMA3 -> MMA2, then the CN sends the packet to the MN as well as the query The process is forwarded to MMA2 by MMAn via MMAn—> MMA3— > MMA2.
  • the mobility management anchor adjacent to the peer node forwards the data packet to a mobility management anchor where the mobile node binding relationship is located;
  • 504 Query, according to the ID identifier carried in the data packet, the mobility management anchor point where the mobile node binding relationship is located, and query the mobile node binding relationship.
  • the method for forwarding the data in the data packet carrying the ID identifier to the mobile node according to the binding relationship of the mobile node including: replacing the ID identifier of the data packet carrying the ID identifier with the IP address of the mobile node The address is forwarded to the mobile node; or the data packet carrying the ID identifier is directly encapsulated on the IP address of the mobile node and forwarded to the mobile node.
  • the mobility management anchor point adjacent to the peer node learns the mobility management anchor point where the mobile node binding relationship is located.
  • the mobile node sends a data packet to the peer node according to the IP address of the peer node.
  • the peer node forwards the data packet with the mobile node ID identifier to the mobile node by using the mobility management anchor where the mobile node binding relationship is located.
  • FIG. 6 another method for communicating a mobile node based on a distributed mobility management system according to an embodiment of the present invention, in the process of implementing the embodiment of the present invention, setting MMAn to CN (Corresponding Node, peer node) Adjacent mobility management anchor; CN learns MN's HoA; CN can be obtained by querying DNS, or MN directly informs CN.
  • CN communicates with the MN's HoAMN; the specific implementation process is as follows:
  • MMAn is a neighboring mobility management anchor of the CN; wherein, when the peer node performs data interaction with the mobile node, if the peer node initiates communication with the MN by using the HoA MN , when the MN sends data to the opposite node, It is also necessary to send data using the same HoACN identity. That is to say, the communication identifier used by the mobile node to initiate communication with the correspondent node needs to be consistent.
  • MMAn obtains the MMA where the binding relationship of the MN is located through the query mechanism. This process sets the binding relationship of the MN to be stored in the MMA2; the query mechanism mentioned here can perform the search by using algorithms such as Chord and Pastry.
  • MMAn may go through multiple hops according to the algorithm. In this process, MMAn directly forwards the data packet to the next hop MMA. For example: MMAn query to MN binding relationship in MMA2 path: MMAn -> MMA3 -> MMA2, then CN sent to MN data packet is also forwarded to MMA2 by MMAn via MMAn -> MMA3 -> MMA2.
  • MMAn forwards the packet to MMA2 that stores the MN binding relationship
  • the MMA2 forwards the data packet to the MN.
  • the process MMA2 needs to replace the ID identifier in the data packet carrying the ID identifier of the MN with the binding relationship of the MN stored therein.
  • the IP address of the MN, and then the data packet carrying the IP address of the MN is sent to the MN.
  • MMA2 informs MMAn that the binding relationship of MN exists here;
  • the MN sends a data packet to the CN
  • FIG. 7 another method for communicating a mobile node based on a distributed mobility management system according to an embodiment of the present invention, in the process of implementing the embodiment of the present invention, when the MN switches to a new network, that is, a new network After the assigned IP address is nCoA, for the communication between the CN and the MN, the communication between the oMMA and the nMMA is used to maintain the continuity of the communication.
  • the specific implementation process is as follows:
  • the communication peer CN uses the HoAMN of the MN to initiate communication with the MN, the data packet is sent to the MMAn (MMAn is the neighboring mobility management anchor point of the CN);
  • MMAn obtains the MMA where the binding relationship of the MN is located through the query mechanism, and the process sets the binding relationship of the MN to be stored in the MMA2; wherein the query mechanism can perform the search by using algorithms such as Chord and Pastry.
  • MMAn forwards the data packet directly to the next hop MMA.
  • the forwarding path may be: MMAn—> MMA3— > MMA2.
  • MMAn forwards the packet to MMA2 that stores the MN binding relationship
  • MMA2 forwards the data packet to the MN; in this process, MMA2 does not replace the destination address of the data packet, but a tunneling mechanism, and adds a new source address and destination address to the outer layer of the data packet (IP and MN of MMA2 respectively) CoA).
  • MMA2 informs MMAn that the binding relationship of MN exists here;
  • the MN sends a data packet to the CN
  • FIG. 8 another method for a mobile node based on a distributed mobility management system according to an embodiment of the present invention, in the process of implementing an embodiment of the present invention, the method includes:
  • the peer node sends an address request message carrying the identifier of the mobile node ID.
  • the peer node sends a data packet to the mobile node.
  • 804 According to the IP address of the peer node, the mobile node sends a data packet to the peer node.
  • FIG. 9 another communication method of a mobile node based on a distributed mobility management system according to an embodiment of the present invention, in the process of implementing the embodiment of the present invention, if the CN performs software upgrade, the CoA of the MN can be obtained. . After the CN obtains the CoA of the MN, the specific implementation process of directly communicating with the MN is as follows:
  • the CN sends an Addr Req message with the HoA of the MN, requesting to obtain the current IP address CoA of the MN;
  • the CN directly sends the packet to the MN through the ordinary routing mechanism
  • the MN sends a packet to the CN.
  • the CN since the CN needs to pass the MMA2 (ie, store the mobile node) The MMA of the IP address and the ID identifier binding relationship and the default MMA of the MN, and then forward the data to the MN; in the above data forwarding process, the CN sends the data packet with the ID identifier to the MM2, according to which the MMA2 The stored mobile node's IP address and ID identification binding relationship replaces the ID identifier in the data packet with an IP address, and then forwards the data packet with the IP address to the default MMA of the MN, and then the default MMA of the MN The data is forwarded to the MN.
  • the IP address in the data packet with the IP address needs to be replaced with the ID identifier stored in the MMA2 and bound to the IP address.
  • the above process of replacing the data packet with the IP address with the ID identifier may be completed by the default MMA of the MN or by the MN itself. If the MM default MMA is used, the default MMA of the MN is required to obtain the IP address and ID identification binding relationship table of the mobile node from the MMA2; after the MN switches out the current default MMA, the current default MMA is based on the MN. The leaving state deletes the IP address of the mobile node and the ID identification binding relationship table; if the MN itself completes the process of replacing the data packet with the IP address with the ID identifier, the MN needs to be upgraded.
  • a handover method based on a distributed mobility management system in a process of implementing an embodiment of the present invention, in a process in which a MN and a CN are communicating, a specific handover of the MN occurs.
  • the process is as follows:
  • the MN moves to the adjacent network (AN2), and the oMMA determines that the MN is about to switch according to the acquired MN location information, and actively sends an RtAdv message to the MN to inform the information related to the address configuration; different types of network location information interaction methods Different, the specific situation depends on the implementation, and does not make a unified specification; wherein, the different types of networks mentioned, for example: 3G (3 rd - Generation, third generation) network, SAE (System Architecture Evolvement) network, WiMAX ( Worldwide Interoperability for Microwave Access) network.
  • 3G 3 rd - Generation, third generation
  • SAE System Architecture Evolvement
  • WiMAX Worldwide Interoperability for Microwave Access
  • the MN initiates a DHCPv6 process according to the information in the RtAdv message, and sends a DHCPv6 Solicit message to the nMMA, and the OMMA acts as a DHCPv6 Relay, and forwards the message to the nMMA;
  • nMMA returns a DHCPv6 Adv. message to the MN through the oMMA relay, instructing it to Can be used as the MN's DHCPv6 server;
  • the MN sends a DHCPv6 Req. message to the nMMA requesting to allocate an IP address
  • the oMMA After receiving the DHCPv6 Req. message sent by the MN, the oMMA encapsulates it in the HI message, and sends it to the nMMA together with the information such as the OM's oCoA to initiate the handover;
  • the nMMA After receiving the HI message with the DHCPv6 Req. message, the nMMA will allocate the nCoA used in the new network from the IP address pool to the MN, and temporarily bind the assigned nCoA to the AO's oCoA to establish a two-way. Tunnel; in addition, the HI message will be acknowledged, and the HAck message encapsulating the DHCPv6 Reply message is sent to the oMMA;
  • the oMMA After receiving the HAck message, the oMMA extracts the relevant information, completes the bidirectional tunnel establishment, and continues to act as the DHCPv6 Relay to forward the DHCPv6 Reply message to the MN. At this time, the forwarding established between oMMA and nMMA to maintain MN communication continuity is established. The bidirectional tunnel of data has been established;
  • the MN After receiving the DHCPv6 Reply message, the MN can complete the configuration of the nCoA according to the information therein;
  • the MN continues to move in the direction of nMMA and disconnects from oMMA. After detecting that the MN is disconnected, the oMMA uses the store-and-forward mechanism to forward data to the nMMA through the bidirectional tunnel.
  • the MN uses the configured nCoA to send a DHCPv6 Confirm message to the nMMA to request confirmation of the use of the nCoA. Meanwhile, the MN also reserves the oCoA as needed to maintain the continuity of the communication session with the CN before the handover;
  • the nMMA returns a DHCPv6 Reply message, informing the MN that the nCoA can be used in the new network;
  • the nMMA forwards the data packet received from the oMMA to the MN; for the data packet forwarded from the oMMA to the MN through the bidirectional tunnel, the destination address used is the MN's oCoA, the purpose is In order to ensure the continuity of the original communication;
  • the oMMA initiates a refresh binding relationship request message to the MMA2 that has registered the MN binding relationship, and refreshes the binding relationship to: (HoA, oCoA) -> (HoA, nCoA);
  • MMA2 diffuses a new binding relationship to neighboring MMAs (HoA, oCoA) -> (HoA,, nCoA);
  • MMA2 replies to the oMMA with a successful response to the binding
  • the MMA2 sends the data packet from the CN to the MN according to the IP address corresponding to the binding option of the MN in the binding relationship table. If the MN binding relationship on the MMA2 is refreshed, for the CN that has been in communication with the MN to send a data packet to the MN, the MMA2 replaces the ID identifier in the data packet with the ID identifier with the IP address bound to the ID. And then send the packet carrying the IP address to the MN
  • the MN moves to the adjacent network (AN2), and the oMMA determines that the MN is about to switch according to the acquired MN location information, and actively sends an RtAdv message to the MN to inform the information related to the address configuration; different types of network location information interaction methods Different, the specific situation depends on the implementation, not unified specifications; the different types of networks described, such as: 3G (3 rd - Generation, third generation) network, SAE (System Architecture Evolvement) network, WiMAX ( Worldwide Interoperability for Microwave Access, Global Interoperability for Microwave Access).
  • 3G 3 rd - Generation, third generation
  • SAE System Architecture Evolvement
  • WiMAX Worldwide Interoperability for Microwave Access, Global Interoperability for Microwave Access
  • the MN initiates a DHCPv6 process according to the information in the RtAdv message, and sends a DHCPv6 Solicit message to the nMMA, and the OMMA acts as a DHCPv6 Relay, and forwards the message to the nMMA;
  • the nMMA returns a DHCPv6 Adv. message to the MN through the oMMA relay, indicating that it can serve as the MN's DHCPv6 server; (4) The MN sends a DHCPv6 Req. message to the nMMA requesting to allocate an IP address;
  • the oMMA After receiving the DHCPv6 Req. message sent by the MN, the oMMA encapsulates it in the HI message, and sends it to the nMMA together with the information such as the OM's oCoA to initiate the handover;
  • the nMMA After receiving the HI message with the DHCPv6 Req. message, the nMMA will allocate the nCoA used in the new network from the IP address pool to the MN, and temporarily bind the assigned nCoA to the AO's oCoA to establish a two-way.
  • the HI (Handover Initiate) message is also acknowledged, and the HAck (Handover Acknowledge) that encapsulates the DHCPv6 Reply message is sent to the oMMA;
  • the oMMA After receiving the HAck message, the oMMA extracts the relevant information, completes the bidirectional tunnel establishment, and continues to act as the DHCPv6 Relay to forward the DHCPv6 Reply message to the MN. At this time, the forwarding established between oMMA and nMMA to maintain MN communication continuity is established. The bidirectional tunnel of data has been established;
  • the MN After receiving the DHCPv6 Reply message, the MN can complete the configuration of the nCoA according to the information therein;
  • the MN continues to move in the direction of nMMA and disconnects from oMMA. After detecting that the MN is disconnected, the oMMA uses the store-and-forward mechanism to forward data to the nMMA through the bidirectional tunnel.
  • the MN uses the configured nCoA to send a DHCPv6 Confirm message to the nMMA to request confirmation of the use of the nCoA. Meanwhile, the MN also reserves the oCoA as needed to maintain the continuity of the communication session with the CN before the handover;
  • the nMMA returns a DHCPv6 Reply message, informing the MN that the nCoA can be used in the new network;
  • the nMMA forwards the data packet received from the oMMA to the MN; for the data packet forwarded from the oMMA to the MN through the bidirectional tunnel, the destination address used is the MN's oCoA, the purpose is In order to ensure the continuity of the original communication;
  • the oMMA initiates a refresh binding relationship request message to the MMA2 that has registered the MN binding relationship, and refreshes the binding relationship to: (HoA oCoA) -> ( HoA nCoA );
  • MMA2 diffuses MN new binding relationship to neighboring MMA (HoA oCoA ) -> ( HoA nCoA );
  • MMA2 replies to the oMMA with a successful response to the binding
  • the data packet is sent to the MN, and the MMA2 uses a tunneling mechanism to add a tunnel header to the outer layer of the data packet.
  • the head is the new source address and the destination address, that is, the IP of the MMA2 and the nCoA of the MN respectively.
  • the data is directly sent to the MN, and the MN removes the tunnel header.
  • a device for registering a mobile node includes:
  • the receiving unit 1201 is configured to: receive, by the mobility management anchor, a request for obtaining an IP address sent by the mobile node;
  • the allocating unit 1202 is configured to: according to the acquiring an IP address request sent by the mobile node, the mobility management anchor point allocates an IP address to the mobile node, and obtains identifier information of the mobile node;
  • the registration unit 1203 is configured to bind, according to the identification information, the mobility management anchor to the IP address of the mobile node and the identification information, and the identification information is used to be registered to the location management server by the mobile node.
  • another apparatus for registering a mobile node includes: a receiving unit 1201: configured to receive, by a mobility management anchor, an IP address request sent by a mobile node;
  • the allocating unit 1202 is configured to: according to the acquiring an IP address request sent by the mobile node, the mobility management anchor point allocates an IP address to the mobile node, and obtains identifier information of the mobile node;
  • Registration unit 1203 configured to move the management node to the mobile node according to the identification information
  • the IP address of the point is bound to the identification information, and the identification information is used to be registered to the location management server by the mobile node.
  • the unit further includes:
  • Binding subunit 1301 configured to bind the mobile node identification information to its IP address;
  • the query subunit 1302 configured to: according to the mobile node identification information, a mobility management anchor query binding relationship table;
  • the refreshing subunit 1303 is configured to: if the mobile node identification information exists in the mobility management anchor binding relationship table, refresh the binding relationship table according to the binding relationship of the mobile node IP address and the identification information ;
  • Inserting subunit 1304 configured to insert the binding according to a binding relationship of the mobile node IP address and the identification information if the mobile node identification information does not exist in the mobility management anchor binding relationship table Relational tables.
  • Registration subunit 1305 for the mobile node to register its identification information with the location management server.
  • a mobile device communication device based on a distributed mobility management system is provided in the embodiment of the present invention.
  • the device includes:
  • the receiving unit 1401 is configured to: receive, by the mobility management anchor, a data packet that is sent by the opposite node and that carries the mobile node ID identifier;
  • the binding relationship query unit 1402 is configured to query, according to the ID identifier carried in the data packet, the mobility management anchor point to query the binding relationship of the mobile node;
  • the sending unit 1403 is configured to send data in the data packet carrying the ID identifier to the mobile node according to the mobile node binding relationship.
  • another communication device of a mobile node based on a distributed mobility management system includes:
  • the receiving unit 1401 is configured to: receive, by the mobility management anchor, a data packet that is sent by the opposite node and that carries the mobile node ID identifier;
  • Binding relationship query unit 1402 used to identify the mobility according to the ID carried in the data packet
  • the management anchor queries the mobile node binding relationship
  • the sending unit 1403 is configured to send data in the data packet carrying the ID identifier to the mobile node according to the mobile node binding relationship.
  • the information obtaining sub-unit 1501 is configured to learn the mobility management anchor point where the mobile node binding relationship is located.
  • another communication device of a mobile node based on a distributed mobility management system includes:
  • the message receiving unit 1601 is configured to: receive, by the mobility management anchor, an address request message that carries the mobile node ID identifier;
  • the information obtaining unit 1602 is configured to acquire the mobile node IP address according to the mobile node ID identifier carried in the address request message.
  • the peer node data sending and receiving unit 1603 is configured to send, according to the mobile node IP address, the peer node to the mobile node and receive the data sent by the mobile node.
  • the mobile node data sending and receiving unit 1604 is configured to: according to the IP address of the correspondent node, the mobile node sends a data packet to the opposite end node and is used to receive data sent by the opposite end node.
  • a switching device based on a distributed mobility management system includes:
  • the information acquiring unit 1701 is configured to: in the coverage of the source network, the mobile node moves to the adjacent network, acquires location information of the mobile node in the source network, and neighboring network routing information;
  • the address configuration information acquiring unit 1702 is configured to: obtain, according to the location information of the mobile node in the source network and the neighboring network routing information, the destination address configuration information of the mobile node in the adjacent network; the address information configuration unit 1703: configured to be used by the mobile node After the source network switches to the adjacent network, the destination address information is configured for the mobile node.
  • another apparatus for switching based on a distributed mobility management system includes:
  • Information obtaining unit 1701 for moving the mobile node to the adjacent network within the coverage of the source network And acquiring location information of the mobile node in the source network and routing information of the adjacent network;
  • a tunnel establishing unit 1801 configured to establish a bidirectional tunnel according to the address configuration information and the destination address configuration information of the mobile node in the source network;
  • the store-and-forward unit 1802 if the mobile node is not connected to the source network, the communication data of the mobile node and the opposite node is stored and forwarded through the bidirectional tunnel.
  • the handover determining unit 1803 is configured to determine, according to the location information of the mobile node in the source network and the neighboring network routing information, whether the mobile node is about to switch.
  • the address configuration information acquiring unit 1702 is configured to obtain the destination address configuration information of the mobile node in the adjacent network according to the location information of the mobile node and the neighboring network routing information, where the address configuration information acquiring unit further includes:
  • Information confirmation subunit 1804 for confirming that the adjacent network mobility management anchor point is to be the server of the mobile node, and the mobile node confirms the destination address configuration information with the adjacent network according to the adjacent network destination address configuration information;
  • Information sending subunit 1805 a handover initiation message for encapsulating the active network address configuration information and the mobile node request to allocate the destination address configuration information of the adjacent network, and sending the message to the adjacent network mobility management anchor point;
  • the information acquisition subunit 1806 is configured to receive a handover response message, and obtain a destination address configuration information of the mobile node in the adjacent network.
  • the address information configuration unit 1703 is configured to configure destination address information for the mobile node after the mobile node switches from the source network to the adjacent network.
  • the address information configuration unit 1703 includes:
  • Address Information Update Subunit 1808 Used by the mobile node to update the source address configuration information to the destination address configuration information and retain its address configuration information on the source network.
  • the address information update subunit 1805 further includes:
  • Refreshing subunit 1809 for refreshing a mobility management anchor point storing a mobile node binding relationship
  • the binding message sending subunit 1810 the mobility management anchor point for storing the mobile node binding relationship sends a binding success message to the source network mobility management anchor point where the mobile node is located;
  • Data transmission sub-unit 1811 The peer node sends data to the mobile node through a mobility management anchor that stores the mobile node binding relationship.
  • a distributed mobility management system includes: at least two mobility management anchors, and any two mobility management anchors are connected to each other;
  • the mobility management anchor is connected to at least one terminal;
  • the mobility management anchor stores a terminal binding relationship table;
  • the terminal binding relationship table stores the terminal identifier and an IP address.
  • MMA Mobility Management Anchor Point
  • the terminal is the mobile node (MN ) and the opposite node (CN ) ;
  • the mobile node may be a mobile terminal, and uses the permanent IP assigned by the first network to identify the identity, including a laptop, a single-mode or multi-mode mobile phone, a PDA (Personal Digital Assistant), and an IAD (International Access). Device, integrated access device, etc.
  • a laptop a single-mode or multi-mode mobile phone
  • PDA Personal Digital Assistant
  • IAD International Access
  • Device integrated access device, etc.
  • the node that the peer node (CN) can communicate with the MN may be a fixed node or a mobile node. If it is a mobile node, the function will be the same as the MN.
  • the mobility management anchor point includes: a registration device of a mobile node, and a communication device of a mobile node And a switching device based on a distributed mobility management system;
  • the registration device of the mobile node used for binding registration of the terminal, binding the mobile terminal
  • the relationship table is stored in the mobility management anchor point
  • the communication device of the mobile node is configured to: when the terminal needs to perform communication, the terminal performs data forwarding according to the binding relationship table of the terminal stored by the mobility management anchor point;
  • the switching device based on the distributed mobility management system is configured to: when the mobile terminal switches from the source network to the adjacent network, configure the destination address for the mobile terminal according to the location information of the mobile terminal in the source network and the adjacent network routing information. Information, and will update the binding relationship table.
  • the binding relationship table stored in the mobility management anchor point in the embodiment of the present invention where the binding relationship is an IP address assigned by the mobile node identifier and the current network to the mobile node, so that the mobile node is in the current network and the peer node
  • the communication performed can directly communicate with the opposite node by using the IP address assigned by the current network, so that the data communicated between the mobile node and the opposite node does not have to pass through the home agent of the home network, but directly passes through the current network.
  • the mobility management anchor performs communication, and the distributed mobility management system of the embodiment of the present invention can balance the load and improve the data processing capability, compared with the prior art, where the home network has large data traffic and low processing capability, and the HA design is complicated and the load is heavy. It simplifies the signaling interaction of each process and improves the processing power of the system.

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Description

移动节点的注册、 通信、 切换方法及装置
本申请要求于 2008 年 7 月 4 日提交中国专利局、 申请号为 200810136023.X,发明名称为"移动节点的注册、 通信、 切换方法及装置"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技术领域, 尤其涉及移动节点的注册、 通信、 切换 方法及装置。
背景技术
MIP ( Mobile Internet Protocol,移动互联网协议 )支持 MN ( Mobile Node , 移动节点)在 IP网络中移动时的连接性, 使 MN在离开其归属网络后仍能保 持与网络的连接。 MN始终采用归属网络( Home Network )分配的 HoA ( Home Address, 归属地址)进行标识, 不因拜访网络的改变而改变; 当 MN离开归 属网络时, 将与拜访网络分配的 CoA ( Care Of Address , 转交地址 )相关联, ΜΝ的当前位置由 CoA来标识, 同时它将向 HA ( Home Agent,归属代理 )发 送其当前位置信息。 而 HA将截获 CN ( Corresponding Node, 对端节点 )发 送到移动节点 HoA的数据包并通过隧道将其转发给 MN的 CoA。 整个处理 过程只在 IP层执行, 而对 IP以上的所有层次透明。
MIP协议族的两个基本协议是 MIPv4 ( Mobile IPv4, 移动 IPv4协议 )和 MIPv6 ( Mobile Ipv6, 移动 IPv6协议)。 MIPv4/v6协议的出现, 使传统的, 固定的 Internet (因特网)主机具备了移动能力。
然而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: 在归属网络(Home Network )中使用 HA, 导致绝大部分信令和数据传输 都将通过该设备, 使之成为性能瓶颈。 尽管经过优化, 在归属网络中采用了 多 HA提供对大量 MN的支持, 但仍然无法彻底解决归属网络成为数据流量 和处理能力瓶颈的问题; HA不仅要对所有 MN进行切换管理,还要进行位置 管理, 致使 HA设计复杂、 负担沉重。 发明内容
本发明的实施例提供了一种分布式移动性管理系统及基于该系统的移动 节点的注册、 通信、 切换方法及装置。
本发明的实施例提供的一种移动节点的注册方法, 包括:
移动性管理锚点接收移动节点发送的获取 IP地址请求;
根据移动节点发送的获取 IP地址请求, 所述移动性管理锚点为移动节点 分配 IP地址、 获取移动节点的标识信息;
根据所述标识信息, 移动性管理锚点将所述移动节点的 IP地址与标识信 息进行绑定, 并且所述标识信息用于通过移动节点被注册到位置管理服务器。
本发明的实施例提供的一种移动节点的通信方法, 包括:
移动性管理锚点接收对端节点发送的携带有移动节点 ID标识的数据包; 根据所述数据包中携带的 ID标识, 移动性管理锚点查询所述移动节点绑 定关系;
根据所述移动节点绑定关系, 将所述携带 ID标识的数据包中的数据向移 动节点发送。
本发明的实施例提供的一种基于分布式移动性管理系统的切换方法, 包 括:
在源网络覆盖范围内, 移动节点向邻接网络移动, 获取移动节点在源网 络的位置信息及邻接网络路由信息;
根据所述移动节点在源网络的位置信息及邻接网络路由信息, 获取移动 节点在邻接网络的目的地址配置信息;
当移动节点从源网络切换到邻接网络后, 为移动节点配置目的地址信息。 本发明的实施例提供的一种移动节点的注册装置, 包括:
接收单元: 用于移动性管理锚点接收移动节点发送的获取 IP地址请求; 分配单元: 用于根据移动节点发送的获取 IP地址请求, 所述移动性管理 锚点为移动节点分配 IP地址、 获取移动节点的标识信息; 注册单元: 用于根据所述标识信息, 移动性管理锚点将所述移动节点的
IP 地址与标识信息进行绑定, 并且所述标识信息用于通过移动节点被注册到 位置管理服务器。
本发明的实施例提供的一种移动节点的通信装置, 包括:
接收单元: 用于移动性管理锚点接收对端节点发送的携带有移动节点 ID 标识的数据包;
绑定关系查询单元: 用于根据所述数据包中携带的 ID标识, 移动性管理 锚点查询所述移动节点绑定关系;
发送单元: 用于根据所述移动节点绑定关系, 将所述携带 ID标识的数据 包中的数据向移动节点发送。
本发明的实施例提供的一种基于分布式移动性管理系统的切换装置, 包 括:
信息获取单元: 用于在源网络覆盖范围内, 移动节点向邻接网络移动, 获取移动节点在源网络的位置信息及邻接网络路由信息;
地址配置信息获取单元: 用于根据所述移动节点在源网络的位置信息及 邻接网络路由信息, 获取移动节点在邻接网络的目的地址配置信息;
地址信息配置单元: 用于当移动节点从源网络切换到邻接网络后, 为移 动节点配置目的地址信息。
本发明的实施例提供的一种分布式移动性管理系统, 包括: 至少两个移 动性管理锚点, 任意两个移动性管理锚点之间都互相连接; 移动性管理锚点 连接有至少一个终端; 所述移动性管理锚点存储有终端绑定关系表; 该终端 绑定关系表存储有终端标识和 IP地址。
本发明实施例所述移动性管理锚点中存储的绑定关系表, 所述绑定关系 为移动节点标识与当前网络为移动节点分配的 IP地址, 这样使得移动节点在 当前网络与对端的节点进行的通信, 直接使用当前网络为其分配的 IP地址与 对端节点进行通信即可, 这样就使得移动节点与对端节点通信的数据, 不必 经过归属网络的归属代理, 而直接通过当前网络的移动性管理锚点进行通信, 与现有技术中归属网络数据流量大和处理能力低, HA设计复杂, 负载沉重相 比, 本发明实施例分布式移动性管理系统可以平衡负载, 提高数据处理能力, 简化了各个流程的信令交互, 提高了系统的处理能力。
附图说明
图 1 为本发明实施例提供的一种基于分布式移动性管理系统的移动节点 的注册方法流程图;
图 2 为本发明实施例提供的另一种基于分布式移动性管理系统的移动节 点的注册方法流程图;
图 3 为本发明实施例提供的另一种基于分布式移动性管理系统的移动节 点的注册方法流程图;
图 4 为本发明实施例提供的一种基于分布式移动性管理系统的移动节点 的通信方法流程图;
图 5 为本发明实施例提供的另一种基于分布式移动性管理系统的移动节 点的通信方法流程图;
图 6 为本发明实施例提供的另一种基于分布式移动性管理系统的移动节 点的通信方法流程图;
图 7 为本发明实施例提供的另一种基于分布式移动性管理系统的移动节 点的通信方法流程图;
图 8 为本发明实施例提供的另一种基于分布式移动性管理系统的移动节 点的通信方法流程图;
图 9 为本发明实施例提供的另一种基于分布式移动性管理系统的移动节 点的通信方法流程图;
图 10为本发明实施例提供的一种基于分布式移动性管理系统的切换方法 流程图;
图 11为本发明实施例提供的另一种基于分布式移动性管理系统的切换方 法流程图;
图 12为本发明实施例提供的一种移动节点的注册装置结构示意图; 图 13为本发明实施例提供的另一种移动节点的注册装置结构示意图; 图 14为本发明实施例提供的一种基于分布式移动性管理系统的移动节点 的通信装置结构示意图;
图 15为本发明实施例提供的另一种基于分布式移动性管理系统的移动节 点的通信装置结构示意图;
图 16为本发明实施例提供的另一种基于分布式移动性管理系统的移动节 点的通信装置结构示意图;
图 17为本发明实施例提供的一种基于分布式移动性管理系统的切换装置 结构示意图;
图 18为本发明实施例提供的另一种基于分布式移动性管理系统的切换装 置结构示意图;
图 19为本发明实施例提供的一种分布式移动性管理系统结构示意图; 图 20为本发明实施例提供的一种分布式移动性管理系统移动性管理锚点 结构示意图。
具体实施方式
下面结合附图对本发明实施例分布式移动性管理系统及基于该系统的移 动节点的注册、 通信、 切换方法及装置进行详细描述。
如图 1 所示, 本发明实施例提供的一种移动节点的注册方法, 在实现本 发明实施例的过程中, 该方法, 包括:
101 : 移动性管理锚点接收移动节点发送的获取 IP地址请求;
102:根据移动节点发送的获取 IP地址请求,所述移动性管理锚点为移动 节点分配 IP地址、 获取移动节点的标识信息;
103:根据所述标识信息,移动性管理锚点将所述移动节点的 IP地址与标 识信息进行绑定, 并且所述标识信息用于通过移动节点被注册到位置管理服 务器。
如图 2所示, 本发明实施例提供的另一种移动节点的注册方法, 在实现 本发明实施例的过程中, 该方法, 包括:
201 : 移动性管理锚点接收移动节点发送的获取 IP地址请求;
202:根据移动节点发送的获取 IP地址请求,所述移动性管理锚点为移动 节点分配 IP地址、 获取移动节点的标识信息;
203: 将所述移动节点标识信息与其 IP地址进行绑定;
204: 根据所述移动节点标识信息, 移动性管理锚点查询绑定关系表; 如果所述移动节点标识信息存在于所述移动性管理锚点绑定关系表, 则 根据所述移动节点 IP地址及标识信息的绑定关系刷新所述绑定关系表;
如果所述移动节点标识信息不存在于所述移动性管理锚点绑定关系表, 则根据所述移动节点 IP地址及标识信息的绑定关系插入到所述绑定关系表。
205: 所述移动节点向位置管理服务器注册其标识信息。 其中, 所述的标 识信息指移动节点的 ID标识。
如图 3 所示, 本发明实施例提供的另一种基于分布式移动性管理系统的 移动节点的注册方法, 在实现本发明实施例的过程中, 具体的实现流程如下: ( 1 ) 移动节点 MN进入 AN1覆盖网络, 向移动性管理锚点 ( MMA ) 请求获取 IP地址; 此流程设 MN向 MMA1发起注册请求;
( 2 ) MMA1收到请求后 , 为 MN分配 IP地址, 作为 MN当前的位置标 识符(Locator, 也就是 CoA ), 并根据该 IP地址产生一个随机数(产生算法 不限, 例如, Hash算法等)作为 MN的 ID标识 HoAMN, 由于该标识具有随 机性, 因此可以采用分布式部署机制, 选择到特定的 MMA后, 均匀的分布 存储在其中, 并在该 MMA里保存 MN的 ID与 IP地址的绑定关系; 由于每 个 MMA管理一定范围的 ID,所以 MMA1根据为 MN产生的 ID来选择 MMA2 保存 MN的 ID-IP绑定关系。其中, MMA1根据 MN的 IP地址随机的产生 ID 标识, ID标识属于 MMA2的存储范围。 ( 3 ) MMA2首先查询当前绑定关系表,如果没有此 MN的信息( HoAMN 标识), 插入 MN的绑定关系选项 , 如果已有 MN的信息 , 刷新绑定关系 MN 表项的 IP地址选项。 并向 MMA1 回复绑定成功响应; 如果绑定无法成功, MMA2向 MMA1 回复绑定响应为失败, 附上原因值。 MMA1会重新为 MN 分配新的 IP地址,生成新的 HoAMN重新选择进行绑定;
( 4 ) MMA1把为 MN分配好的 IP地址 CoA与 HoA 响应给 MN;
( 5 ) 同时, MMA24巴绑定关系列表备份到相邻的 MMA上;
( 6 ) MN获得 HoAMN后 , 向 DNS刷新绑定 ( MN, HoA
如图 4所示, 本发明实施例提供的一种基于分布式移动性管理系统的移 动节点的通信方法, 在实现本发明实施例的过程中, 该方法, 包括:
401 : 移动性管理锚点接收对端节点发送的携带有移动节点 ID标识的数 据包;
402: 根据所述数据包中携带的 ID标识, 移动性管理锚点查询所述移动 节点绑定关系;
403: 根据所述移动节点绑定关系, 将所述携带 ID标识的数据包中的数 据向移动节点发送。
如图 5 所示, 本发明实施例提供的另一种基于分布式移动性管理系统的 移动节点的通信方法, 在实现本发明实施例的过程中, 该方法, 包括:
501 : 移动性管理锚点接收对端节点发送的携带有移动节点 ID标识的数 据包;
502: 才艮据所述数据包中携带的 ID标识, 与对端节点相邻的移动性管理 锚点查询所述移动节点绑定关系所在的移动性管理锚点; 在对端节点相邻的 移动性管理锚点的同时,携带有 ID标识的数据包会随着查询过程中转;例如: 设 MMAn为对端节点相邻的移动性管理锚点; MMA2为 MN绑定关系的移动 性管理锚点; 如果 MMAn查询到 MN 的绑定关系存于 MMA2 的路径为: MMAn— > MMA3— > MMA2, 则 CN发向 MN的数据包也会随着查询的过 程由 MMAn经 MMAn—〉 MMA3— > MMA2 转发至 MMA2。
503: 与对端节点相邻的移动性管理锚点将所述数据包转发给所述移动节 点绑定关系所在的移动性管理锚点;
504: 根据所述数据包中携带的 ID标识, 所述移动节点绑定关系所在的 移动性管理锚点查询所述移动节点绑定关系。
505: 根据所述移动节点绑定关系, 将所述携带 ID标识的数据包中的数 据转发给移动节点。 所述根据所述移动节点绑定关系, 将所述携带 ID标识的 数据包中的数据转发给移动节点的方式, 包括: 将所述携带 ID标识的数据包 的 ID标识替换为移动节点的 IP地址转发给移动节点; 或者将所述携带 ID标 识的数据包直接封装上移动节点的 IP地址转发给移动节点。
506: 与对端节点相邻的移动性管理锚点获知所述移动节点绑定关系所在 的移动性管理锚点;
507: 根据对端节点的 IP地址, 移动节点发送数据包给对端节点;
508: 对端节点通过所述移动节点绑定关系所在的移动性管理锚点将带有 移动节点 ID标识的数据包转发给移动节点。
如图 6所示, 本发明实施例提供的另一种基于分布式移动性管理系统的 移动节点的通信方法, 在实现本发明实施例的过程中, 设 MMAn 为 CN ( Corresponding Node, 对端节点 )临近的移动性管理锚点; CN获知 MN的 HoA; CN可以通过查询 DNS获得, 或是 MN直接告知 CN。 当 CN通过 MN 的 HoAMN和其进行通信; 具体实现流程如下:
( 1 ) 通信对端 CN利用 MN的 HoAMN发起和 MN的通信时, 发,数 据包到 MMAn。 其中, MMAn为 CN的邻近移动性管理锚点; 其中, 所述对 端节点与移动节点进行数据交互时, 如果对端节点采用 HoAMN发起与 MN进 行通信, 则 MN向对端节点发送数据时也需要采用相同的 HoACN标识发送 数据。 也就是说移动节点与对端节点发起通信所采用的通信标识需要保持一 致。 ( 2 ) MMAn通过查询机制获得 MN的绑定关系所在的 MMA , 此流程 设 MN的绑定关系存于 MMA2; 此处提到的查询机制可利用 Chord, Pastry 等算法实现查找。
MMAn在查询的过程中 ,根据算法可能经过多跳, 此过程 MMAn直接 转发数据包到下一跳 MMA。例如: MMAn查询到 MN 的绑定关系存于 MMA2 的路径为: MMAn—〉 MMA3—〉 MMA2,则 CN发向 MN的数据包也由 MMAn 经 MMAn—〉 MMA3— > MMA2 转发至 MMA2。
( 3 ) MMAn将包转发到存储 MN绑定关系的 MMA2上;
( 4 ) MMA2转发数据包给 MN; 当数据包到达 MMA2将要发送给 MN 时, 此过程 MMA2需要根据其中存储的 MN的绑定关系, 将携带 MN的 ID 标识的数据包中的 ID标识替换为 MN的 IP地址, 然后再将携带 MN的 IP地 址的数据包发送给 MN.
( 5 ) 同时 MMA2告知 MMAn, MN的绑定关系存于此;
( 6 ) MN发送数据包到 CN;
( 7、 8 ) CN再次向 MN发送数据包时,可直接发包到 MMA2,经 MMA2 转发给 MN了。
如图 7所示, 本发明实施例提供的另一种基于分布式移动性管理系统的 移动节点的通信方法, 在实现本发明实施例的过程中, 当 MN切换到新网络 即新网络为其分配的 IP地址为 nCoA后,对于 CN和 MN—直在进行的通信, 采用 oMMA和 nMMA之间隧道的方式保持通信的连续性。 具体实现流程如 下:
( 1 )通信对端 CN利用 MN的 HoAMN发起和 MN的通信时, 发,数 据包到 MMAn ( MMAn为 CN的邻近移动性管理锚点);
( 2 ) MMAn通过查询机制获得 MN的绑定关系所在的 MMA, 此流程设 MN的绑定关系存于 MMA2; 其中, 所述查询机制可利用 Chord, Pastry等算 法实现查找。 MMAn通过上述算法, 将数据包直接转发到下一跳 MMA。 例 如: 根据算法, 转发路径可能为: MMAn—〉 MMA3— > MMA2。
( 3 ) MMAn将包转发到存储 MN绑定关系的 MMA2上;
( 4 ) MMA2转发数据包给 MN; 此流程中 , MMA2不替换数据包的目的 地址,而是隧道机制,在数据包外层加上新的源地址和目的地址(分别 MMA2 的 IP和 MN的 CoA )。
( 5 ) 同时 MMA2告知 MMAn, MN的绑定关系存于此;
( 6 ) MN发送数据包到 CN;
( 7、 8 ) CN再次向 MN发送数据包时, 可直接发包到 MMA2, 经 MMA2 转发给 MN了。
如图 8所示, 本发明实施例提供的另一种基于分布式移动性管理系统的 移动节点的通信方法, 在实现本发明实施例的过程中, 该方法, 包括:
801 : 对端节点发送携带移动节点 ID标识的地址请求消息;
802: 根据所述地址请求消息中所携带的移动节点 ID标识, 获取所述移 动节点 IP地址;
803: 根据所述移动节点 IP地址, 对端节点发送数据包给移动节点。 804: 根据所述对端节点 IP地址, 移动节点发送数据包给对端节点。 如图 9所示, 本发明实施例提供的另一种基于分布式移动性管理系统的 移动节点的通信方法,在实现本发明实施例的过程中,如果 CN进行软件升级, 可获得 MN的 CoA。 当 CN获得 MN的 CoA后, 直接与 MN进行通信的具 体实现流程如下:
( 1 ) CN发送带有 MN的 HoA的 Addr Req 消息, 请求获得 MN 当前的 IP地址 CoA;
( 2, 3 ) MMAn通过查询机制获取 MN目前的 IP地址 CoA, 回复给 CN;
( 4 ) CN通过普通路由机制直接发包到 MN;
( 5 ) MN发送数据包到 CN。
在实现上述通信的过程中, 由于 CN需要通过 MMA2 (即存储移动节点 的 IP地址与 ID标识绑定关系的 MMA ) 以及 MN的缺省 MMA, 然后将数据 转发给 MN; 在上述数据转发的过程中, CN将带有 ID标识的数据包发送到 MM2, MMA2根据其中存储的移动节点的 IP地址与 ID标识绑定关系将数据 包中的 ID标识替换为 IP地址, 然后将带有 IP地址的数据包转发给 MN的缺 省 MMA,然后由 MN的缺省 MMA将数据转发给 MN。在由 MN的缺省 MMA 将数据转发给 MN的过程中,需要将带有 IP地址的数据包中的 IP地址替换为 MMA2中存储的与该 IP地址绑定的 ID标识。 上述将带有 IP地址的数据包替 换为 ID标识的过程可以由 MN的缺省 MMA来完成,也可以通过 MN自己完 成。 如果通过 MN缺省 MMA来完成, 则需要 MN的缺省 MMA从 MMA2中 获取移动节点的 IP地址与 ID标识绑定关系表;当 MN切换出当前缺省 MMA 后, 当前缺省 MMA会根据 MN的离开状态将所述移动节点的 IP地址与 ID 标识绑定关系表删除; 如果通过 MN自己完成将带有 IP地址的数据包替换为 ID标识的过程, 则需要将 MN进行升级。
如图 10所示, 本发明实施例提供的一种基于分布式移动性管理系统的切 换方法, 在实现本发明实施例的过程中, MN和 CN正在进行通信的过程中, MN发生切换的具体流程如下:
( 1 ) MN向邻接网络( AN2 )移动, oMMA根据获取的 MN位置信息 , 判断 MN即将发生切换, 主动向 MN发送 RtAdv消息, 告知其与地址配置相 关的信息; 不同类型的网络位置信息交互方法不同, 具体情况根据实现而定, 不作统一规范; 其中, 所述的不同类型的网络, 例如: 3G ( 3 rd - Generation, 第三代) 网络, SAE ( System Architecture Evolvement, 系统架构演进) 网络, WiMAX ( Worldwide Interoperability for Microwave Access, 微波存取全球互 通) 网络。
( 2 ) MN根据 RtAdv消息中信息 , 发起 DHCPv6流程 , 向 nMMA发送 DHCPv6 Solicit消息, oMMA作为 DHCPv6 Relay, 将该消息转发给 nMMA;
( 3 ) nMMA通过 oMMA中继, 向 MN返回 DHCPv6 Adv.消息, 指示其 可作为 MN的 DHCPv6服务器;
( 4 ) MN向 nMMA发送 DHCPv6 Req.消息 , 请求分配 IP地址;
( 5 ) oMMA收到 MN发送的 DHCPv6 Req.消息后, 将其封装在 HI消 息中, 连同 MN的 oCoA等信息一起, 向 nMMA发送, 发起切换;
( 6 ) nMMA收到带有 DHCPv6 Req.消息的 HI消息后, 将从 IP地址池 中为 MN分配新网络中使用的 nCoA, 同时将分配的 nCoA与 MN的 oCoA进 行临时绑定, 以便建立双向隧道; 此外, 还将对 HI消息进行应答, 向 oMMA 发送封装有 DHCPv6 Reply消息的 HAck消息;
( 7 ) oMMA收到 HAck消息后 , 提取相关信息 , 完成双向隧道建立 , 并继续作为 DHCPv6 Relay,将 DHCPv6 Reply消息向 MN转发;此时, oMMA 与 nMMA间为保持 MN通信连续性而建立的转发数据的双向隧道已经建立完 成;
( 8 ) MN收到 DHCPv6 Reply消息后, 可以根据其中的信息完成 nCoA 的配置;
( 9a,b,c ) MN继续向 nMMA方向移动, 与 oMMA断开连接。 oMMA 探测到 MN无连接后, 采用存储转发机制, 通过双向隧道, 向 nMMA进行数 据转发;
( 10 ) MN来到 nMMA覆盖的新网络后 , 进行附着流程, 实现与新网络 的连接;
( 11 ) MN采用配置的 nCoA , 向 nMMA发送 DHCPv6 Confirm消息, 请求对 nCoA使用的确认; 同时, MN还根据需要, 保留了 oCoA, 用于保持 切换前与 CN进行的通信会话的连续性;
( 12 ) nMMA返回 DHCPv6 Reply消息 , 通知 MN可以在新网络中使用 nCoA;
( 9d ) nMMA将从 oMMA接收到的数据包转发给 MN;对于来自 oMMA, 通过双向隧道转发给 MN的数据包,使用的目的地址为 MN的 oCoA, 目的是 为了保证原有通信的连续性;
( 13 ) oMMA向注册了 MN绑定关系的 MMA2发起刷新绑定关系请求 消息 , 将绑定关系刷新为: ( HoA , oCoA ) -> ( HoA , nCoA );
( 14 ) MMA2向相邻 MMA扩散匪新的绑定关系 ( HoA , oCoA ) - > ( HoA,,nCoA );
( 15 ) MMA2向 oMMA回复绑定成功响应;
( 16a,b ) MN在新网络里, MN建立新的通信时, MMA2将来自 CN的 数据包根据绑定关系表里面 MN的绑定选项对应的 IP地址发送给 MN。 如果 MMA2上的 MN绑定关系刷新以后,对于一直与 MN保持通信的 CN,向 MN 发送数据包, 则 MMA2将带有 ID标识的数据包中的 ID标识替换为与该 ID 绑定的 IP地址, 然后将携带 IP地址的数据包发送给 MN
如图 11所示, 本发明实施例提供的另一种基于分布式移动性管理系统的 切换方法, 在实现本发明实施例的过程中, MN换了新的 CoA后即 nCoA, 对 于 CN和 MN正在进行的通信, 采用 oMMA和 nMMA之间隧道的方式保持 通信, 本实施例实现该方法的具体流程如下:
( 1 ) MN向邻接网络( AN2 )移动, oMMA根据获取的 MN位置信息 , 判断 MN即将发生切换, 主动向 MN发送 RtAdv消息, 告知其与地址配置相 关的信息; 不同类型的网络位置信息交互方法不同, 具体情况根据实现而定, 不作统一规范; 其中 所述的不同类型的网络, 例如: 3G ( 3 rd - Generation, 第三代) 网络, SAE ( System Architecture Evolvement, 系统架构演进) 网络, WiMAX ( Worldwide Interoperability for Microwave Access, 微波存取全球互 通) 网络。
( 2 ) MN根据 RtAdv消息中信息 , 发起 DHCPv6流程 , 向 nMMA发送 DHCPv6 Solicit消息, oMMA作为 DHCPv6 Relay, 将该消息转发给 nMMA;
( 3 ) nMMA通过 oMMA中继, 向 MN返回 DHCPv6 Adv.消息, 指示其 可作为 MN的 DHCPv6服务器; ( 4 ) MN向 nMMA发送 DHCPv6 Req.消息, 请求分配 IP地址;
( 5 ) oMMA收到 MN发送的 DHCPv6 Req.消息后, 将其封装在 HI消 息中, 连同 MN的 oCoA等信息一起, 向 nMMA发送, 发起切换;
( 6 ) nMMA收到带有 DHCPv6 Req.消息的 HI消息后, 将从 IP地址池 中为 MN分配新网络中使用的 nCoA, 同时将分配的 nCoA与 MN的 oCoA进 行临时绑定, 以便建立双向隧道; 此外, 还将对 HI ( Handover Initiate, 切换 发起消息)进行应答, 向 oMMA发送封装有 DHCPv6 Reply 消息的 HAck ( Handover Acknowledge , 切换应答消息 );
( 7 ) oMMA收到 HAck消息后 , 提取相关信息 , 完成双向隧道建立 , 并继续作为 DHCPv6 Relay,将 DHCPv6 Reply消息向 MN转发;此时, oMMA 与 nMMA间为保持 MN通信连续性而建立的转发数据的双向隧道已经建立完 成;
( 8 ) MN收到 DHCPv6 Reply消息后, 可以根据其中的信息完成 nCoA 的配置;
( 9a,b,c ) MN继续向 nMMA方向移动, 与 oMMA断开连接。 oMMA 探测到 MN无连接后, 采用存储转发机制, 通过双向隧道, 向 nMMA进行数 据转发;
( 10 ) MN来到 nMMA覆盖的新网络后 , 进行附着流程, 实现与新网络 的连接;
( 11 ) MN采用配置的 nCoA , 向 nMMA发送 DHCPv6 Confirm消息, 请求对 nCoA使用的确认; 同时, MN还根据需要, 保留了 oCoA, 用于保持 切换前与 CN进行的通信会话的连续性;
( 12 ) nMMA返回 DHCPv6 Reply消息 , 通知 MN可以在新网络中使用 nCoA;
( 9d ) nMMA将从 oMMA接收到的数据包转发给 MN;对于来自 oMMA, 通过双向隧道转发给 MN的数据包,使用的目的地址为 MN的 oCoA, 目的是 为了保证原有通信的连续性;
( 13 ) oMMA向注册了 MN绑定关系的 MMA2发起刷新绑定关系请求 消息, 将绑定关系刷新为: (HoA oCoA ) -> ( HoA nCoA );
( 14 ) MMA2向相邻 MMA扩散 MN新的绑定关系 ( HoA oCoA ) - > ( HoA nCoA );
( 15 ) MMA2向 oMMA回复绑定成功响应;
( 16a,b ) MMA2上的 MN绑定关系刷新以后, 对于一直与 MN保持通信 的 CN, 向 MN发送数据包, MMA2采用隧道机制, 在数据包外层添加上隧 道头部,所述的隧道头部为新的源地址和目的地址即分别 MMA2的 IP和 MN 的 nCoA, 根据所述数据包外层添加上隧道头部的地址信息, 直接将数据发送 到 MN , 由 MN去掉隧道头部。
如图 12所示, 本发明实施例提供的一种移动节点的注册装置, 该装置, 包括:
接收单元 1201 : 用于移动性管理锚点接收移动节点发送的获取 IP地址请 求;
分配单元 1202: 用于根据移动节点发送的获取 IP地址请求, 所述移动性 管理锚点为移动节点分配 IP地址、 获取移动节点的标识信息;
注册单元 1203: 用于根据所述标识信息, 移动性管理锚点将所述移动节 点的 IP地址与标识信息进行绑定, 并且所述标识信息用于通过移动节点被注 册到位置管理服务器。
如图 13所示, 本发明实施例提供的另一种移动节点的注册装置, 包括: 接收单元 1201 : 用于移动性管理锚点接收移动节点发送的获取 IP地址请 求;
分配单元 1202: 用于根据移动节点发送的获取 IP地址请求, 所述移动性 管理锚点为移动节点分配 IP地址、 获取移动节点的标识信息;
注册单元 1203: 用于根据所述标识信息, 移动性管理锚点将所述移动节 点的 IP地址与标识信息进行绑定, 并且所述标识信息用于通过移动节点被注 册到位置管理服务器。
该单元进一步, 包括:
绑定子单元 1301 : 用于将所述移动节点标识信息与其 IP地址进行绑定; 查询子单元 1302: 用于根据所述移动节点标识信息, 移动性管理锚点查 询绑定关系表;
刷新子单元 1303: 用于如果所述移动节点标识信息存在于所述移动性管 理锚点绑定关系表, 则根据所述移动节点 IP地址及标识信息的绑定关系刷新 所述绑定关系表;
插入子单元 1304: 用于如果所述移动节点标识信息不存在于所述移动性 管理锚点绑定关系表, 则根据所述移动节点 IP地址及标识信息的绑定关系插 入到所述绑定关系表。
注册子单元 1305:用于所述移动节点向位置管理服务器注册其标识信息。 如图 14所示, 本发明实施例提供的一种基于分布式移动性管理系统的移动节 点的通信装置, 该装置, 包括:
接收单元 1401 : 用于移动性管理锚点接收对端节点发送的携带有移动节 点 ID标识的数据包;
绑定关系查询单元 1402: 用于根据所述数据包中携带的 ID标识,移动性 管理锚点查询所述移动节点绑定关系;
发送单元 1403: 用于根据所述移动节点绑定关系,将所述携带 ID标识的 数据包中的数据向移动节点发送。
如图 15所示, 本发明实施例提供的另一种基于分布式移动性管理系统的 移动节点的通信装置, 该装置, 包括:
接收单元 1401 : 用于移动性管理锚点接收对端节点发送的携带有移动节 点 ID标识的数据包;
绑定关系查询单元 1402: 用于根据所述数据包中携带的 ID标识,移动性 管理锚点查询所述移动节点绑定关系;
发送单元 1403: 用于根据所述移动节点绑定关系,将所述携带 ID标识的 数据包中的数据向移动节点发送。
信息获知子单元 1501 : 用于获知所述移动节点绑定关系所在的移动性管 理锚点。
如图 16所示, 本发明实施例提供的另一种基于分布式移动性管理系统的 移动节点的通信装置, 该装置, 包括:
消息接收单元 1601:用于移动性管理锚点接收携带移动节点 ID标识的地 址请求消息;
信息获取单元 1602: 用于根据所述地址请求消息中所携带的移动节点 ID 标识, 获取所述移动节点 IP地址;
对端节点数据发送接收单元 1603: 用于根据所述移动节点 IP地址, 对端 节点发送数据包给移动节点以及接收移动节点发送过来的数据。
移动节点数据发送接收单元 1604: 用于根据所述对端节点 IP地址, 移动 节点发送数据包给对端节点以及用于接收对端节点发送过来的数据。
如图 17所示, 本发明实施例提供的一种基于分布式移动性管理系统的切 换装置, 该装置, 包括:
信息获取单元 1701 : 用于在源网络覆盖范围内, 移动节点向邻接网络移 动, 获取移动节点在源网络的位置信息及邻接网络路由信息;
地址配置信息获取单元 1702: 用于根据所述移动节点在源网络的位置信 息及邻接网络路由信息, 获取移动节点在邻接网络的目的地址配置信息; 地址信息配置单元 1703: 用于当移动节点从源网络切换到邻接网络后, 为移动节点配置目的地址信息。
如图 18所示, 本发明实施例提供的另一种基于分布式移动性管理系统的 切换装置, 该装置, 包括:
信息获取单元 1701 : 用于在源网络覆盖范围内, 移动节点向邻接网络移 动, 获取移动节点在源网络的位置信息及邻接网络路由信息;
隧道建立单元 1801 : 用于根据所述移动节点在源网络的地址配置信息和 目的地址配置信息, 建立双向隧道;
存储转发单元 1802: 用如果于探测移动节点与源网络无连接后, 则将移 动节点与对端节点的通信数据通过双向隧道进行数据存储转发。
切换判断单元 1803 : 用于根据所述移动节点在源网络的位置信息及邻接 网络路由信息, 判断移动节点是否即将发生切换。
地址配置信息获取单元 1702: 用于根据所述移动节点在源网络的位置信 息及邻接网络路由信息, 获取移动节点在邻接网络的目的地址配置信息; 所 述地址配置信息获取单元, 进一步包括:
信息确认子单元 1804: 用于确认邻接网络移动性管理锚点将作为移动节 点的服务器以及移动节点根据所述邻接网络目的地址配置信息, 与邻接网络 确认目的地址配置信息;
信息发送子单元 1805: 用于将封装有源网络地址配置信息和移动节点请 求分配邻接网络的目的地址配置信息的切换发起消息, 向邻接网络移动性管 理锚点发送;
信息获取子单元 1806: 用于接收切换应答消息, 获取移动节点在邻接网 络的目的地址配置信息。
地址信息配置单元 1703: 用于当移动节点从源网络切换到邻接网络后, 为移动节点配置目的地址信息。 所述地址信息配置单元 1703 , 包括:
建立连接子单元 1807: 用于移动节点从源网络进入到邻接网络覆盖范围 内, 所述移动节点与邻接网络建立连接;
地址信息更新子单元 1808: 用于移动节点将源地址配置信息更新为目的 地址配置信息并保留其在源网络的地址配置信息。 所述地址信息更新子单元 1805 , 进一步, 包括:
刷新分单元 1809:用于刷新存储有移动节点绑定关系的移动性管理锚点; 绑定消息发送分单元 1810: 用于存储有移动节点绑定关系的移动性管理 锚点向移动节点所在源网络移动性管理锚点发送绑定成功消息;
数据发送分单元 1811 : 用于对端节点通过存储有移动节点绑定关系的移 动性管理锚点向移动节点发送数据。
如图 19所示,本发明实施例提供的一种分布式移动性管理系统,该系统, 包括: 至少两个移动性管理锚点, 任意两个移动性管理锚点之间都互相连接; 移动性管理锚点连接有至少一个终端; 所述移动性管理锚点存储有终端绑定 关系表; 该终端绑定关系表存储有终端标识和 IP地址。 其中, 所述的移动性 管理锚点 (MMA ): 主要功能有:
a ) 保存一张管理移动终端的 ID-IP绑定关系表项;
b ) 提供动态修改机制, 使移动终端在改变 IP地址后能通过与移动性管 理锚点的交互进行及时更新;
c ) 分布式部署机制, 能通过该机制将 ID-IP绑定关系在网络进行合理的 存储和备份到其他移动性管理锚点(MMA ), 实现分布式部署,便于 CN能够 更的获取 MN的当前地址。
d ) 提供查询机制, 使 CN可以通过查询方式获取 MN当前地址。
终端即移动节点 (MN ) 与对端节点 (CN ) ;
所述的移动节点可以是移动终端, 采用第一次入网分配的永久 IP来进行 身份标识,包括笔记本电脑、单模或多模手机、 PDA ( Personal digital assistant , 个人数字助理)、 IAD ( Integrated Access Device, 集成接入设备)等。
所述对端节点 (CN )可以与 MN进行通信的节点, 可以是固定节点, 也 可以为移动节点。 如果为移动节点, 功能将与 MN相同。
如图 20所示, 本发明实施例提供的一种分布式移动性管理系统的移动性 管理锚点结构示意图; 所述移动性管理锚点, 包括: 移动节点的注册装置、 移动节点的通信装置和基于分布式移动性管理系统的切换装置;
所述移动节点的注册装置: 用于终端进行绑定注册, 将移动终端的绑定 关系表存储于所述移动性管理锚点;
所述移动节点的通信装置: 用于当终端需要进行通信时, 终端根据所述 移动性管理锚点存储的终端的绑定关系表进行数据转发;
所述基于分布式移动性管理系统的切换装置: 用于当移动终端从源网络 切换到邻接网络时, 根据所述移动终端在源网络的位置信息及邻接网络路由 信息, 为移动终端配置目的地址信息, 并将更新绑定关系表。
本发明实施例所述移动性管理锚点中存储的绑定关系表, 所述绑定关系 为移动节点标识与当前网络为移动节点分配的 IP地址, 这样使得移动节点在 当前网络与对端的节点进行的通信, 直接使用当前网络为其分配的 IP地址与 对端节点进行通信即可, 这样就使得移动节点与对端节点通信的数据, 不必 经过归属网络的归属代理, 而直接通过当前网络的移动性管理锚点进行通信, 与现有技术中归属网络数据流量大和处理能力低, HA设计复杂, 负载沉重相 比, 本发明实施例分布式移动性管理系统可以平衡负载, 提高数据处理能力, 简化了各个流程的信令交互, 提高了系统的处理能力。
通过以上的实施方式的描述, 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取存储介质中, 该程序在执行时, 包括 如上述方法实施例的步骤, 所述的存储介质,如: ROM/RAM、磁碟、 光盘等。
以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并不局限 于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易 想到变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护 范围应以权利要求的保护范围为准。

Claims

权利 要求 书
1、 一种移动节点的注册方法, 其特征在于, 包括:
移动性管理锚点接收移动节点发送的获取 IP地址请求;
根据移动节点发送的获取 IP地址请求, 所述移动性管理锚点为移动节点分 配 IP地址、 获取移动节点的标识信息;
根据所述标识信息, 移动性管理锚点将所述移动节点的 IP地址与标识信息 进行绑定, 并且所述标识信息用于通过移动节点被注册到位置管理服务器。
2、 根据权利要求 1所述的移动节点的注册方法, 其特征在于, 所述根据所 述标识信息, 移动性管理锚点将所述移动节点的 IP地址与标识信息进行绑定的 步骤, 包括:
将所述移动节点标识信息与其 IP地址进行绑定;
根据所述移动节点标识信息, 移动性管理锚点查询绑定关系表;
如果所述移动节点标识信息存在于所述移动性管理锚点绑定关系表, 则根 据所述移动节点 IP地址及标识信息的绑定关系刷新所述绑定关系表;
如果所述移动节点标识信息不存在于所述移动性管理锚点绑定关系表, 则 根据所述移动节点 IP地址及标识信息的绑定关系插入到所述绑定关系表。
3、 一种移动节点的通信方法, 其特征在于, 包括:
移动性管理锚点接收对端节点发送的携带有移动节点 ID标识的数据包; 根据所述数据包中携带的移动节点 ID标识, 移动性管理锚点查询所述移动 节点绑定关系;
根据所述移动节点绑定关系, 将所述携带移动节点 ID标识的数据包中的数 据向移动节点发送。
4、 根据权利要求 3所述的移动节点的通信方法, 其特征在于, 所述根据所 述数据包中携带的 ID标识,移动性管理锚点查询所述移动节点绑定关系的步骤, 包括:
根据所述数据包中携带的 ID标识, 与对端节点相邻的移动性管理锚点查询 所述移动节点绑定关系所在的移动性管理锚点;
与对端节点相邻的移动性管理锚点将所述数据包发送给所述移动节点绑定 关系所在的移动性管理锚点;
根据所述数据包中携带的 ID标识, 所述移动节点绑定关系所在的移动性管 理锚点查询所述移动节点绑定关系。
5、 根据权利要求 4所述的移动节点的通信方法, 其特征在于, 所述根据所 述移动节点绑定关系, 将所述数据包中的数据向移动节点发送步骤包括:
与对端节点相邻的移动性管理锚点获知所述移动节点绑定关系所在的移动 性管理锚点;
对端节点通过所述移动节点绑定关系所在的移动性管理锚点将带有移动节 点 ID标识的数据包发送给移动节点。
6、 根据权利要求 3所述的移动节点的通信方法, 其特征在于, 所述根据所 述移动节点绑定关系, 将所述携带 ID标识的数据包中的数据发送给移动节点的 方式, 包括: 将所述携带 ID标识的数据包的 ID标识替换为移动节点的 IP地址 转发给移动节点; 或者将所述携带 ID 标识的数据包直接封装上移动节点的 IP 地址转发给移动节点。
7、 一种基于分布式移动性管理系统的切换方法, 其特征在于, 包括: 在源网络覆盖范围内, 获取移动节点在源网络的位置信息及邻接网络路由 信息;
根据所述移动节点在源网络的位置信息及邻接网络路由信息, 获取移动节 点在邻接网络的目的地址配置信息;
当移动节点从源网络切换到邻接网络后, 为移动节点配置目的地址信息。
8、 根据权利要求 7所述基于分布式移动性管理系统的切换方法, 其特征在 于, 所述根据所述移动节点在源网络的位置信息及邻接网络路由信息, 获取移 动节点在邻接网络的目的地址配置信息的步骤之后, 还包括:
根据所述移动节点在源网络的地址配置信息和目的地址配置信息, 建立双 向! ¾道;
如果移动节点与源网络无连接, 则将移动节点与对端节点的通信数据通过 所述双向隧道进行数据存储转发。
9、 根据权利要求 7或 8所述基于分布式移动性管理系统的切换方法, 其特 征在于, 所述获取移动节点在邻接网络的目的地址配置信息的步骤, 包括: 确认邻接网络移动性管理锚点将作为移动节点的服务器;
将封装有源网络地址配置信息和移动节点请求分配邻接网络的目的地址配 置信息的切换发起消息, 向邻接网络移动性管理锚点发送;
接收切换应答消息, 获取移动节点在邻接网络的目的地址配置信息。
10、 一种移动节点的注册装置, 其特征在于, 包括:
接收单元: 用于接收移动节点发送的获取 IP地址请求;
分配单元: 用于根据移动节点发送的获取 IP地址请求, 所述为移动节点分 配 IP地址、 获取移动节点的标识信息;
注册单元: 用于根据所述标识信息, 将所述移动节点的 IP地址与标识信息 进行绑定, 并且所述标识信息用于通过移动节点被注册到位置管理服务器。
11、 根据权利要求 10所述的移动节点的注册装置, 其特征在于, 所述注册 单元, 包括:
绑定子单元: 用于将所述移动节点标识信息与其 IP地址进行绑定; 查询子单元: 用于根据所述移动节点标识信息, 查询绑定关系表; 刷新子单元: 用于如果所述移动节点标识信息存在于绑定关系表, 则根据 所述移动节点 IP地址及标识信息的绑定关系刷新所述绑定关系表;
插入子单元: 用于如果所述移动节点标识信息不存在于绑定关系表, 则根 据所述移动节点 IP地址及标识信息的绑定关系插入到所述绑定关系表。
12、 一种移动节点的通信装置, 其特征在于, 包括:
接收单元: 用于接收对端节点发送的携带有移动节点 ID标识的数据包; 绑定关系查询单元: 用于根据所述数据包中携带的 ID标识, 查询所述移动 节点绑定关系;
发送单元: 用于根据所述移动节点绑定关系, 将所述携带 ID标识的数据包 中的数据向移动节点发送。
13、 根据权利要求 12所述的移动节点的通信装置, 其特征在于, 所述发送 单元, 包括:
信息获知子单元: 用于获知所述移动节点绑定关系所在的移动性管理锚点。
14、 一种基于分布式移动性管理系统的切换装置, 其特征在于, 包括: 信息获取单元: 用于在源网络覆盖范围内当移动节点向邻接网络移动时获 取移动节点在源网络的位置信息及邻接网络路由信息;
地址配置信息获取单元: 用于根据所述移动节点在源网络的位置信息及邻 接网络路由信息, 获取移动节点在邻接网络的目的地址配置信息;
地址信息配置单元: 用于当移动节点从源网络切换到邻接网络后, 为移动 节点配置目的地址信息。
15、 根据权利要求 14所述基于分布式移动性管理系统的切换装置, 其特征 在于, 还包括:
隧道建立单元: 用于根据所述移动节点在源网络的地址配置信息和目的地 址配置信息, 建立双向隧道;
发送单元: 用于当移动节点与源网络无连接时, 则将移动节点与对端节点 的通信数据通过所述隧道建立单元建立的双向隧道进行数据发送。
16、 根据权利要求 14或 15所述基于分布式移动性管理系统的切换装置, 其特征在于, 所述地址配置信息获取单元, 包括:
信息获取子单元: 用于接收切换应答消息, 获取移动节点在邻接网络的目 的地址配置信息。
17、 一种分布式移动性管理系统, 包括: 至少两个移动性管理锚点, 任意 两个移动性管理锚点之间都互相连接; 移动性管理锚点连接有至少一个终端; 所述移动性管理锚点存储有终端绑定关系表; 该终端绑定关系表存储有终端标 识和 IP地址。
18、 根据权利要求 17所述分布式移动性管理系统, 其特征在于, 所述移动 性管理锚点, 包括: 移动节点的注册装置、 移动节点的通信装置和基于分布式 移动性管理系统的切换装置;
所述移动节点的注册装置: 用于终端进行绑定注册, 将移动终端的绑定关 系表存储于所述移动性管理锚点;
所述移动节点的通信装置: 用于当终端需要进行通信时, 终端根据所述移 动性管理锚点存储的终端的绑定关系表进行数据转发;
所述基于分布式移动性管理系统的切换装置: 用于当移动终端从源网络切 换到邻接网络时, 根据所述移动终端在源网络的位置信息及邻接网络路由信息, 为移动终端配置目的地址信息, 并将更新绑定关系表。
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