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WO2014043901A1 - Procédé, appareil et système de session pour gestion de mobilité distribuée - Google Patents

Procédé, appareil et système de session pour gestion de mobilité distribuée Download PDF

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Publication number
WO2014043901A1
WO2014043901A1 PCT/CN2012/081779 CN2012081779W WO2014043901A1 WO 2014043901 A1 WO2014043901 A1 WO 2014043901A1 CN 2012081779 W CN2012081779 W CN 2012081779W WO 2014043901 A1 WO2014043901 A1 WO 2014043901A1
Authority
WO
WIPO (PCT)
Prior art keywords
address
router
mobile node
node device
data packet
Prior art date
Application number
PCT/CN2012/081779
Other languages
English (en)
Chinese (zh)
Inventor
何宁
朱雷
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2012/081779 priority Critical patent/WO2014043901A1/fr
Priority to CN201280004180.XA priority patent/CN103891316B/zh
Publication of WO2014043901A1 publication Critical patent/WO2014043901A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing 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

Definitions

  • Session method Session method, device and system for distributed mobility management
  • the present invention relates to the field of communications technologies, and in particular, to a session method, apparatus, and system for distributed mobility management.
  • a first-hop access router (AR) of a mobile node (MN) is generally used as a mobility anchor to perform mobility management functions, for example: Mobile user location updates, periodic updates, authentication, power-on access, shutdown exit, and device identification.
  • the MN moves to the current access router (NAR), it will be attached under nAR, and jtbHt nAR will re-distribute the Internet Protocol (IP) address for the MN, thus making MN
  • IP Internet Protocol
  • the IP address assigned by the nAR to the MN can be used to perform data interaction with a communication node (Correspondent Node, CN for short).
  • a communication node Correspondent Node, CN for short.
  • pAR a previous access router
  • the pAR allocates an IP address to the MN, and the MN enters the nAR network after initiating a session in the pAR network.
  • the session initiated by the MN in the pAR network uses the IP address assigned by the nAR to the MN, which will cause the session initiated by the MN in the pAR network to be interrupted.
  • the inventors have found that at least the following problems exist in the prior art:
  • an embodiment of the present invention provides a session method for distributed mobility management, including: a first router assigning a first IP address to a mobile node device; a router acquiring a second IP address and a third IP address of the communication node, wherein the second IP address is allocated by the second router where the mobile node device is located for the mobile node device; The first session data packet sent by the mobile node device; the first router sends the first session data packet to the communication node by using the first IP address as a source IP address, and the second IP address An address is sent to the communication node to enable After receiving the first session data packet, the communication node uses the second IP address as a final source IP address, and submits the first session data packet and the second IP address to the communication.
  • the receiving, by the first router, the first session data packet sent by the mobile node device includes:
  • the first router receives the first session data packet of the mobile node device with the second IP address as the source IP address and the third IP address as the destination IP address.
  • the first router sends the first router to the communication node by using the first IP address as a source IP address.
  • the session packet including:
  • the first router replaces the second IP address at the source IP address field in the first session data packet with the first IP address.
  • the receiving, by the first router, the first session data packet sent by the mobile node device includes:
  • the first router receives the first session data packet of the mobile node device with the first IP address as the source IP address and the third IP address as the destination IP address.
  • the first router receives a router request message sent by the mobile node device, where the router request message carries a first flag bit, the first flag bit is a first value, and the first value is used to indicate
  • the mobile node device will perform the sending of the first session data packet by using the first IP address as a source IP address;
  • the first router establishes a binding relationship with the communication node by using a proxy binding update message, where the proxy binding update message carries the first flag bit, the first IP address, and the second IP address; Receiving, by the first router, a proxy binding response message sent by the communication node with respect to the proxy binding update message, where the proxy binding response message is used to indicate that the communication node agrees to the mobile node device
  • the first IP address is a source IP address for transmitting the first session data packet.
  • the acquiring, by the first router, the second IP address and the third IP address of the communication node includes:
  • the first router acquires session information of the mobile node device by using a centralized device, where the centralized device is used to record session information of the mobile node device, and the session information includes an identity flag of the mobile node device.
  • the second IP address and the third IP address are used to record session information of the mobile node device, and the session information includes an identity flag of the mobile node device.
  • the acquiring, by the first router, the second IP address and the third IP address of the communication node includes:
  • the first router acquires session information of the mobile node device from the second router, where the session information includes an identity identifier of the mobile node device, the second IP address, and a third IP address.
  • the first router acquires the second IP address and the third IP address of the communication node, and the method includes:
  • the first router acquires session information from the mobile node device, and the session information includes an identity identifier of the mobile node device, the second IP address, and a third IP address.
  • an embodiment of the present invention provides a session method for distributed mobility management, including:
  • the mobile node device After attaching to the first router, the mobile node device receives the first IP address allocated by the first router;
  • Source IP address and submit the first session data packet and the second IP address to an upper layer of a communication node's IP layer;
  • the mobile node device receives a second session data packet sent by the first router and the second IP address; After receiving the second session data packet, the mobile node device uses the second IP address as a final destination IP address, and submits the second session data packet and the second IP address to the mobile The upper layer of the IP layer of the node device.
  • the sending, by the mobile node device, the first session data packet to the first router includes:
  • the mobile node device sends the first session data packet to the first router by using the second IP address as a source IP address and the third IP address as a destination IP address.
  • the sending, by the mobile node device, the first session data packet to the first router includes:
  • the mobile node device sends the first session data packet to the first router by using the first IP address as a source IP address and the third IP address as a destination IP address.
  • the mobile node device uses the first IP address as a source IP address and the third IP address as a destination Before sending the first session data packet to the first router, the method includes: the mobile node device sending a router request message to the first router, where the router request message carries a first flag bit, where The first flag is a first value, and the first value is used to indicate that the mobile node device sends the first session data packet by using the first IP address as a source IP address.
  • an embodiment of the present invention provides a first router, including: a first allocation unit, configured to allocate a first IP address to the mobile node device;
  • a first acquiring unit configured to acquire a second IP address and a third IP address of the communication node, where the second IP address is allocated by the second router where the mobile node device is located for the mobile node device;
  • a first receiving unit configured to receive a first session data packet sent by the mobile node device, where the first sending unit is configured to use the first IP address allocated by the first allocating unit as a source IP address to the communication node Transmitting, by the first receiving unit, the first session data packet, and sending the second IP address obtained by the first acquiring unit to the communication node, so that the communication node receives the first After the session data packet, the second IP address is used as the final source IP address, and the first session data packet and the second IP address are delivered to an upper layer of the IP layer of the communication node;
  • a second receiving unit configured to receive, by the communications node, a second session data packet with the third IP address as the source IP address and the first IP address as the destination IP address;
  • the first sending unit is further configured to send, by using the second IP address obtained by the first acquiring unit, the second session data packet received by the second receiving unit to the mobile node device So that the mobile node device, after receiving the second session data packet, uses the second IP address as a final destination IP address, and the second session data packet and the second IP address. Submitted to the upper layer of the IP layer of the mobile node device; or
  • the first sending unit is further configured to send the second receiving order to the mobile node device Receiving the second session data packet, and transmitting the second IP address obtained by the first obtaining unit to the mobile node device, so that the mobile node device after receiving the second session data packet And the second IP address is the final destination IP address, and the second session data packet and the second IP address are delivered to an upper layer of the IP layer of the mobile node device.
  • the first receiving unit is specifically configured to:
  • the method further includes:
  • a first replacement unit configured to replace, by the first IP address allocated by the first allocation unit, a second IP address at a source IP address field in the first session data packet received by the first receiving unit.
  • the first receiving unit is specifically configured to:
  • the method further includes: a third receiving unit, configured to receive a router request message sent by the mobile node device, where the router request message has a first flag bit, the first flag bit is a first value, and the first value is used for Representing that the mobile node device will perform the sending of the first session data packet by using the first IP address as a source IP address;
  • a first binding unit configured to establish a binding relationship with the communication node by using a proxy binding update message after the third receiving unit receives the router request message, where the proxy binding update message includes the a first flag bit, a first IP address, and a second IP address;
  • a fourth receiving unit configured to receive a proxy binding response message sent by the communications node with respect to the proxy binding update message sent by the first binding unit, where the proxy binding response message is used to indicate the communication
  • the node agrees that the mobile node device performs the sending of the first session data packet by using the first IP address as a source IP address.
  • any one of the first implementation manner, the second implementation manner, the third implementation manner, and the fourth implementation manner, the fifth implementation manner in the third aspect The first obtaining unit:
  • the method is used to acquire session information of the mobile node device by using a centralized device, where the centralized device is configured to record session information of the mobile node device, where the session information includes an identity identifier of the mobile node device.
  • the second IP address and the third IP address are described.
  • the first acquiring unit In the mode, any one of the first implementation manner, the second implementation manner, the third implementation manner, and the fourth implementation manner, the sixth implementation in the third aspect
  • the first acquiring unit In the mode, the first acquiring unit:
  • the session information of the mobile node device is obtained from the second router, where the session information includes an identity identifier of the mobile node device, the second IP address, and a third IP address.
  • the first obtaining unit :
  • the session information is obtained from the mobile node device, where the session information includes an identity identifier of the mobile node device, the second IP address, and a third IP address.
  • an embodiment of the present invention provides a mobile node device, including:
  • a first receiving unit configured to receive a first IP address allocated by the first router after being attached to the first router
  • a first sending unit configured to send the first session data packet to the first router, so that the first router sends the first session data packet to the communications node by using the first IP address as a source IP address, where And sending, to the communication node, a second IP address of the second router where the mobile node device is located, so that the communication node receives the first session data packet, and the second IP address a final source IP address, and submit the first session data packet and the second IP address to an upper layer of a communication node's IP layer;
  • a second receiving unit configured to receive, by the first router, the second IP address a second session packet for the destination IP address
  • a submitting unit configured to use the second IP address as a final destination IP address, and submit the second session data packet and the second IP address received by the second receiving unit to an IP of the mobile node device The upper layer of the layer.
  • the first sending unit is specifically configured to:
  • the first session data packet is sent to the first router by using the second IP address as a source IP address and the third IP address as a destination IP address.
  • the first sending unit is specifically configured to:
  • the first IP address is used as the source IP address
  • the third IP address is used as the destination IP address to send the session data packet to the first router.
  • the method further includes:
  • a second sending unit configured to send a router request message to the first router, where the router request message has a first flag bit, the first flag bit is a first value, and the first value is used to indicate The mobile node device will perform the first IP address as a source IP address. The sending of the first session data packet.
  • an embodiment of the present invention provides a first router, including:
  • a first processor configured to allocate a first IP address to the mobile node device
  • a first receiver configured to acquire a second IP address and a third IP address of the communication node, where the second IP address is allocated by the second router where the mobile node device is located for the mobile node device;
  • the first receiver is further configured to receive a first session data packet sent by the mobile node device
  • a first transmitter configured to send, by using the first IP address allocated by the first processor, a first session data packet received by the first receiver to the communication node, and the first Sending, by the receiver, a second IP address to the communication node, so that after receiving the first session data packet, the communication node uses the second IP address as a final source IP address, and Transmitting the first session data packet and the second IP address to an upper layer of an IP layer of the communication node;
  • the first receiver is further configured to receive, by the communication node, a second session data packet with the third IP address as the source IP address and the first IP address as the destination IP address;
  • the first transmitter is further configured to send the second session data packet received by the first receiver to the mobile node device by directly using the second IP address obtained by the first receiver as a destination IP address. So that the mobile node device, after receiving the second session data packet, Taking the second IP address as a final destination IP address, and submitting the second session data packet and the second IP address to an upper layer of an IP layer of the mobile node device; or
  • the first transmitter is further configured to send the second session data packet received by the first receiver to the mobile node device, and send the second IP address obtained by the first receiver to The mobile node device, so that after receiving the second session data packet, the mobile node device uses the second IP address as a final destination IP address, and the second session data packet and the The second IP address is delivered to the upper layer of the IP layer of the mobile node device.
  • the first receiver is specifically configured to:
  • the first processor is further configured to:
  • the first receiver is specifically configured to:
  • the first receiver is further configured to:
  • the router Receiving a router request message sent by the mobile node device, the router requesting cancellation, with a first flag bit, the first flag bit is a first value, and the first value is used to indicate the mobile node
  • the device will send the first session data packet by using the first IP address as a source IP address;
  • the first transmitter is further configured to: after the first receiver receives the router request message, establish a binding relationship with the communication node by using a proxy binding update message, where the proxy binding update message is included The first flag bit, the first IP address, and the second IP address;
  • the first receiver is further configured to receive a proxy binding response message sent by the communications node with respect to a proxy binding update sent by the first sender, where the proxy binding response message is used to indicate
  • the communication node agrees that the mobile node device transmits the session data packet by using the first IP address as a source IP address.
  • the method is further configured to acquire session information of the mobile node device by using a centralized device, where the centralized device is configured to record session information of the mobile node device, where the session information includes an identity identifier of the mobile node device.
  • the second IP address and the third IP address are described.
  • the first implementation manner, the second implementation manner, and the third And the first receiver is further configured to acquire session information of the mobile node device from the second router, where the session information includes the mobile node device The identity flag, the second IP address, and the third IP address.
  • the session information including an identity tag of the mobile node device, the second IP address, and a third IP address.
  • an embodiment of the present invention provides a mobile node device, including:
  • a first receiver configured to receive a first IP address assigned by the first router after being attached to the first router
  • a first sender configured to send the first session data packet to the first router, so that the first router sends the first session data packet to the communication node by using the first IP address as a source IP address, And sending, to the communication node, a second IP address of the second router where the mobile node device is located, so that the communication node receives the first session data packet, and the second IP address a final source IP address, and submit the first session data packet and the second IP address to an upper layer of a communication node's IP layer;
  • the first receiver is further configured to receive, by the first router, the second session data packet with the second IP address as a destination IP address; or And configured to receive the second session data packet sent by the first router and the second IP address;
  • a first processor configured to use the second IP address as a final destination IP address, and submit the second session data packet and the second IP address received by the first receiver to a mobile node device The upper layer of the IP layer.
  • the first transmitter is specifically configured to:
  • the first session data packet is sent to the first router by using the second IP address as a source IP address and the third IP address as a destination IP address.
  • the first transmitter is specifically configured to:
  • the first session data packet is sent to the first router by using the first IP address as a source IP address and the third IP address as a destination IP address.
  • the first transmitter is further configured to:
  • an embodiment of the present invention provides a session system for distributed mobility management, including a first router, a second router, a mobile node device, and a communication node, where
  • the first router is configured to allocate a first IP address to the mobile node device, obtain a second IP address, and a third IP address of the communication node, where the second IP address is a second router where the mobile node device is located before And allocating, by the mobile node device, a first session data packet sent by the mobile node device, sending the first session data packet to the communication node by using the first IP address as a source IP address, and The second IP address is sent to the communication node, and the second session data packet with the third IP address as the source IP address and the first IP address as the destination IP address is directly received by the communication node.
  • the mobile node device is configured to receive a first IP address allocated by the first router, and send a first session data packet to the first router, where Receiving, by the first router, a second session data packet with the second IP address as the destination IP address, or receiving the second session data packet sent by the first router, and the second IP address.
  • Said second IP address is a final destination IP address, and the second session data packet and the second IP address are delivered to an upper layer of an IP layer of the mobile node device;
  • the communication node is configured to: after receiving the first session data packet sent by the first router, use the second IP address as a final source IP address, and the first session data packet and The second IP address is delivered to the upper layer of the IP layer of the communication node, and the third IP address is used as the source IP address, and the first IP address is used as the destination IP address to send the second session data packet to the first router.
  • the session method, device and system for distributed mobility management provided by the embodiment of the present invention, after the mobile node device moves to the network where the first router is located, the communication node receives the first session data packet and the mobile node device receives the second When the session data packet is used, the second IP address assigned by the second router to the mobile node device is the final source IP address and the final destination IP address, thereby ensuring that the mobile node device is in the second place before it.
  • the session initiated by the router is not interrupted, and the first IP address assigned by the first router to the mobile node device is the source IP address when the first router sends the first session data packet to the communication node, and the communication node is the first
  • the second session data packet sent by the router uses the first IP address as the destination IP address, so that the first router does not need to establish a communication tunnel when communicating with the communication node.
  • the embodiment of the present invention avoids the application communication tunnel when the mobile node device ensures that the session initiated by the second router where the mobile node is located is not interrupted, thereby saving distributed mobility management. Session cost.
  • FIG. 1 is a flowchart of a session method for distributed mobility management according to an embodiment of the present invention.
  • 2 is a flowchart of a session method for distributed mobility management according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of a session method for distributed mobility management according to another embodiment of the present invention
  • FIG. 4 is a flowchart of a session method for distributed mobility management according to another embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of a first router according to an embodiment of the present invention
  • FIG. 7 is a schematic structural diagram of a first router according to another embodiment of the present invention
  • FIG. 9 is a schematic structural diagram of a mobile node device according to an embodiment of the present invention
  • FIG. 10 is a schematic structural diagram of a mobile node device according to another embodiment of the present invention
  • FIG. 11 is a schematic structural diagram of a session system for distributed mobility management according to an embodiment of the present invention.
  • FIG. 1 a session method for distributed mobility management according to an embodiment of the present invention is described from a first router side, where the method includes: 101.
  • the first router allocates a first IP address to the mobile node device.
  • the first router acquires a second IP address and a third IP address of the communication node.
  • the second IP address is allocated by the second router where the mobile node device is located for the mobile node device.
  • the first router may acquire session information of the mobile node device by using a centralized device, where the centralized device is configured to record session information of the mobile node device, for example, the centralized device stores a policy profile of the mobile node device, where the session information of the mobile node device is recorded in the configuration information, and the session information includes a mobile node identity (Mobile Node Identity, MN-ID for short) ), the second IP address and the third IP address.
  • MN-ID Mobile Node Identity
  • the first router may acquire session information of the mobile node device by using the second router, where the session information includes an identity identifier of the mobile node device, the second IP address, and a third IP address.
  • the second router may delete session information of the mobile node device to save storage space of the second router.
  • the first router acquires session information from the mobile node device, for example, the mobile node device stores configuration information (the policy profile) of the mobile node device, where the mobile node is recorded in the configuration information. Session information of the device, the session information including an identity flag of the mobile node device, the second IP address, and a third IP address.
  • the acquiring, by the first router, the session information from the mobile node device may also be implemented by receiving a data packet that is sent by the mobile node device and carrying the session information, where the session information includes the mobile node device. The second IP address and the third IP address.
  • the first router receives a first session data packet sent by the mobile node device.
  • the mobile node device may use the first IP address or the second IP address as a source.
  • the IP address is used to send the first session packet. If the mobile node device sends the first session data packet with the first IP address as the source IP address, the second IP address may be the home address option of the first session data packet IP header (Home) Address Option ) Carry.
  • the first router sends the first session data packet to the communication node by using the first IP address as a source IP address, and sends the second IP address to the communication node, so that the first router After receiving the session data packet, the communication node uses the second IP address as the final source IP address, and delivers the first session data packet and the second IP address to the IP layer of the communication node.
  • Upper level the first router sends the first session data packet to the communication node by using the first IP address as a source IP address, and sends the second IP address to the communication node, so that the first router After receiving the session data packet, the communication node uses the second IP address as the final source IP address, and delivers the first session data packet and the second IP address to the IP layer of the communication node.
  • the first router receives the second session data packet with the third IP address as the source IP address and the first IP address as the destination IP address. Then step 106 or step 107 is performed.
  • the second IP address is carried by a Type 2 Routing Header in an IP header of the second session data packet.
  • the first router directly sends the second session data packet to the mobile node device by using a second IP address as a destination IP address, so that the mobile node device receives the second session data packet. Thereafter, the second IP address is used as the final destination IP address, and the second session data packet and the second IP address are delivered to an upper layer of the IP layer of the mobile node device.
  • the first router After receiving the second session data packet, the first router replaces the first IP address in the IP header with the second IP address in the Type 2 Routing Header, so that the second The IP address is used as the destination IP address.
  • the first router sends a second session data packet to the mobile node device, and sends the second IP address to the mobile node device, so that the mobile node device receives the second After the session data packet, the second IP address is the final destination IP address, and the second session data packet and the second IP address are delivered to an upper layer of the IP layer of the mobile node device.
  • the first router directly forwards the second session data packet, and the second IP address is carried by a Type 2 Routing Header in an IP header of the second session data packet.
  • the session method for distributed mobility management is described from the mobile node device side, and the method includes:
  • the mobile node device After attaching to the first router, the mobile node device receives the first IP address allocated by the first router. 202. The mobile node device sends a first session data packet to the first router, so that the first router sends the first session data packet to the communication node by using the first IP address as a source IP address. And transmitting, to the communication node, a second IP address assigned by the second router where the mobile node device is located, so that the communication node receives the first session data packet, and the second IP address The address is the final source IP address, and the first session data packet and the second IP address are delivered to the upper layer of the IP layer of the communication node. Then step 203 or step 204 is performed.
  • the mobile node device receives, by the first router, a second session data packet with the second IP address as a destination IP address.
  • the mobile node device receives a second session data packet sent by the first router and the second IP address.
  • the mobile node device After receiving the second session data packet, the mobile node device uses the second IP address as a final destination IP address, and submits the second session data packet and the second IP address. Go to the upper layer of the IP layer of the mobile node device.
  • first router and the second router provided by the embodiments of the present invention are generally first-hop access routers (ARs), which can be used as mobile anchor points to perform mobility management functions. .
  • ARs first-hop access routers
  • the session method for distributed mobility management provided by the embodiment of the present invention, when the communication node receives the first session data packet and the mobile node device receives the second session data packet, respectively, the second path
  • the second IP address assigned by the router to the mobile node device is the final source IP address and the final destination IP address, thereby ensuring that the session initiated by the mobile node device at the second router where it is located is not interrupted.
  • the first router sends the first session data packet to the communication node the first IP address assigned by the first router to the mobile node device is the source IP address, and the second session data packet sent by the communication node to the first router is The first IP address is used as the destination IP address, so that the first router does not need to establish a communication tunnel when communicating with the communication node.
  • the embodiment of the present invention avoids the application communication tunnel when the mobile node device ensures that the session initiated by the second router where the mobile node is located is not interrupted, thereby saving distributed mobility management. Session cost.
  • a session method for distributed mobility management includes:
  • a mobile node (Mobile Node, MN for short) device initiates a session on the second router, and sends a first session data packet to the communication node by using the second IP address assigned by the second router as the source IP address.
  • MN Mobile Node
  • the mobile node device moves to a network of the first router. After the mobile node device is attached to the first router, the first router allocates a first IP address to the mobile node device.
  • the mobile node device sends a router request message to the first router.
  • the router request (Router Solicitation, referred to as RS) message is carried in the message Having a first flag, if the first flag is a first value (eg, using a binary number 1), the first value is used to indicate that the mobile node device will use the first IP address as a source IP address
  • the first session data packet is sent. If the first flag is a second value (for example, using a binary 0), the second value is used to indicate that the mobile node device will perform the first session data packet with the second IP address as the source IP address. send.
  • the first router acquires a second IP address and a third IP address of the communication node.
  • the second IP address is allocated by the second router where the mobile node device is located for the mobile node device.
  • the first router may acquire session information of the mobile node device by using a centralized device, where the centralized device is configured to record session information of the mobile node device, for example, the centralized device stores a policy profile of the mobile node device, where the session information of the mobile node device is recorded in the configuration information, and the session information includes a mobile node identity (Mobile Node Identity, MN-ID for short) ), the second IP address and the third IP address.
  • MN-ID Mobile Node Identity
  • the first router may acquire session information of the mobile node device by using the second router, where the session information includes an identity identifier of the mobile node device, the second IP address, and a third IP address.
  • the second router may delete session information of the mobile node device to save storage space of the second router.
  • the first router acquires session information from the mobile node device, for example, the mobile node device stores configuration information (the policy profile) of the mobile node device, where the mobile node is recorded in the configuration information. Session information of the device, the session information including an identity flag of the mobile node device, the second IP address, and a third IP address.
  • the acquiring, by the first router, the session information from the mobile node device may also be implemented by receiving a data packet that is sent by the mobile node device and carrying the session information, where the session information includes the mobile node device.
  • the second IP address and the third IP address may also be implemented by receiving a data packet that is sent by the mobile node device and carrying the session information, where the session information includes the mobile node device.
  • the first router establishes a binding relationship with the communication node by using a Proxy Binding Update (PBU) message, where the proxy binding update message carries the first flag bit, and the first IP address and second IP address.
  • PBU Proxy Binding Update
  • the first flag bit in the PBU message is a first value (for example, using a binary number 1), and indicates that the mobile node device sends the first session data packet by using the first IP address as a source IP address. To maintain the continuity of the session initiated on the second router.
  • the first flag bit in the PBU message is a first value (for example, using a binary number 1), and indicates that the mobile node device sends the first session data packet by using the first IP address as a source IP address. To maintain the continuity of the session initiated on the second router.
  • the IP address can be recorded in a pre-defined current address mobility option (MN Current-Address Mobility Opt ion) in the mobile node device, for example, the format of the Current-Address Mobility Opt ion is as shown in Table 1, where Type represents The type of option (value is an integer, for example defined as 7), Length indicates the length of MN Current-Address (value is 16, the unit is sub-section), MN Current-Address indicates the value of the option is the value of the current address move option And the second IP address can be recorded in The Home Address Option in the IP header of the PBU message Table 1.
  • MN Current-Address Mobility Option option is an integer, for example defined as 7
  • Length indicates the length of MN Current-Address (value is 16, the unit is sub-section)
  • MN Current-Address indicates the value of the option is the value of the current address move option
  • the second IP address can be recorded in The Home Address Option in the IP header of the PBU message Table 1.
  • the communications node After receiving the proxy binding update message, the communications node can satisfy the requirement that the mobile node device sends the first session data packet by using the first IP address as a source IP address. And returning a Proxy Binding Acknowledgement (PBA) message to the first router with respect to the proxy binding update message.
  • PBA Proxy Binding Acknowledgement
  • the PBA message carries the first flag bit, and the first flag bit in the PBA message is a first value (for example, using a binary number 1), and is used to indicate that the communication node agrees to the mobile node.
  • the device sends the first session data packet by using the first IP address as the source IP address.
  • the communication node must maintain the first session data packet when the communication node receives the proxy binding update message and agrees that the mobile node device sends the first session data packet with the first IP address as the source IP address.
  • a binding list includes at least a mobile node identity (Mobile Node Identity, MN_ID), the first flag bit, a home address (HoA), and a current address.
  • the first flag bit in the binding list is a first value (for example, a binary number 1 is used), and the second router where the home address is the mobile node device is the mobile node device.
  • the assigned second IP address, where the current address is a first IP address assigned by the first router where the mobile node device is located to the mobile node device.
  • the communication node determines whether it can meet the requirement of the mobile node device to send the first session data packet by using the first IP address as a source IP address, where the communication node is If the security of the mobile node device is not perfect, the communication node does not accept the request of the mobile node device to send the first session data packet by using the first IP address as the source IP address, in order to ensure And establishing, by the mobile node device, the security of the session initiated by the second router, establishing a communication tunnel between the network where the second router is located and the network where the first router is located, or at the communication node The communication tunnel is established between the networks where the first router is located, but is not limited thereto.
  • the first router receives a proxy binding response message sent by the communications node, and instructs the mobile node device to send the first session data packet by using the first IP address as a source IP address.
  • the first router may send a Router Advertisement (RA) message to the mobile node device, and notify the mobile node device to send the first session data packet by using the first IP address as a source IP address.
  • the router advertisement message carries a first flag bit, the first flag bit is a first value (for example, using a binary number 1), and the first value is used to indicate that the mobile node device is to be the first
  • the IP address is the source IP address for sending the first session data packet.
  • the first flag bit in the router request message in step 303 is a second value (for example, using a binary number 0)
  • the first flag bit in the Router Advertisement (RA) message a second value (for example, using a binary number of 0)
  • the first router must maintain a binding list, the binding list including at least a mobile node identity (Mobile Node Identity, MN-ID), A flag, Home Address (HoA), previous address.
  • MN-ID Mobile Node Identity
  • HoA Home Address
  • the first flag bit in the binding list is a second value (for example, using a binary number 0), and the home address is the first router that the mobile node device is currently located to allocate to the mobile node device.
  • An IP address, the previous address being a second IP address assigned by the second router where the mobile node device was located to the mobile node device.
  • the mobile node device sends the first session data packet to the first router by using the first IP address as a source IP address and the third IP address as a destination IP address.
  • the first session data packet carries a second IP address assigned by the second router where the mobile node device is located to the mobile node device, and the second IP address may be used by the first session data packet.
  • the IP header's Home Address Option is carried.
  • the first router sends a first session data packet to the communication node by using the first IP address as a source IP address, and sends the second IP address to the communication node.
  • the communication node After receiving the first session data packet, the communication node uses the second IP address as a final source IP address, and hands the first session data packet and the second IP address. Go to the upper layer of the IP layer of the communication node.
  • the communication node sends the second session data packet to the first router by using the third IP address as the source IP address and the IP address for the first IP address.
  • the second IP address is carried by the Type 2 Routing Header of the IP header of the second session data packet.
  • the first router After receiving the second session data packet, the first router sends a second session data packet to the mobile node device by using the first IP address as the destination IP address, and sends the second IP address. To the mobile node device.
  • the mobile node device After receiving the second session data packet, the mobile node device uses the second IP address as a final destination IP address, and submits the second session data packet and the second IP address. Go to the upper layer of the IP layer of the mobile node device.
  • a session method for distributed mobility management when the communication node receives the first session data packet and the mobile node device receives the second session data packet, respectively, the second router is allocated to the mobile node device.
  • the second IP address is the final source IP address and the final destination IP address, thereby ensuring that the session initiated by the mobile node device at the second router where it is located is not interrupted, and because the first router sends the communication to the communication node.
  • the first session data packet is configured with the first IP address assigned by the first router as the mobile node device as the source IP address, and the second session data packet sent by the communication node to the first router is for the first IP address.
  • the embodiment of the present invention avoids the application communication tunnel when the mobile node device ensures that the session initiated by the second router where the mobile node is located is not interrupted, thereby saving distributed mobility management. Session cost.
  • a session method for distributed mobility management includes:
  • the mobile node (Mobile Node, MN for short) device initiates a session on the second router, and sends the first session data packet to the communication node by using the second IP address assigned by the second router as the source IP address.
  • the mobile node device moves to a network of the first router. After the mobile node device is attached to the first router, the first router allocates a first IP address to the mobile node device.
  • the mobile node device sends the first session data packet to the first router by using the second IP address as a source IP address and the third IP address as a destination IP address.
  • the first router After receiving the first session data packet, the first router replaces the second IP address in the source IP address field in the first session data packet with the first IP address.
  • the first router sends a first session data packet to the communication node by using the first IP address as a source IP address, and sends the second IP address to the communication node.
  • the second IP address is carried by a Home Address Option in an IP header of the first session data packet. 406.
  • the communications node uses the second IP address as a final source IP address, and submits the first session data packet and the second IP address to The upper layer of the IP layer of the communication node.
  • the communication node sends the second session data packet to the first router by using the third IP address as the source IP address and the first IP address as the destination IP address.
  • the second session data packet carries a second IP address assigned by the second router where the mobile node device is located to the mobile node device, and the second IP address is used by the second session data packet.
  • the Type 2 Routing Header in the IP header is carried.
  • the first router After receiving the second session data packet, the first router replaces the first IP address in the source IP address field in the second session data packet with the second IP address.
  • the first router directly sends the second session data packet to the mobile node device by using a second IP address as a destination IP address.
  • the mobile node device After receiving the second session data packet, the mobile node device uses the second IP address as a final destination IP address, and submits the second session data packet and the second IP address. Go to the upper layer of the IP layer of the mobile node device.
  • a session method for distributed mobility management when the communication node receives the first session data packet and the mobile node device receives the second session data packet, respectively, the second router is allocated to the mobile node device.
  • the second IP address is the final source IP address and most End destination IP address, thereby ensuring that the session initiated by the mobile node device at the second router where it is located is not interrupted, and the first router is the first router when sending the first session data packet to the communication node
  • the first IP address assigned to the mobile node device is the source IP address
  • the second session data packet sent by the communication node to the first router uses the first IP address as the destination IP address, thereby causing the first router and the There is no need to establish a communication tunnel when the communication node communicates.
  • the embodiment of the present invention avoids the application communication tunnel when the mobile node device ensures that the session initiated by the second router where the mobile node is located is not interrupted, thereby saving distributed mobility management. Session cost.
  • the first router provided by the embodiment of the present invention includes:
  • the first allocating unit 501 is configured to allocate a first IP address to the mobile node device. For details, see step 101 in Figure 1, and no further details are provided here.
  • the first obtaining unit 502 is configured to acquire a second IP address and a third IP address of the communication node, where the second IP address is allocated by the second router where the mobile node device is located for the mobile node device.
  • the second IP address is allocated by the second router where the mobile node device is located for the mobile node device.
  • the first receiving unit 503 is configured to receive the first session data packet sent by the mobile node device. For the specific implementation, refer to step 103 in Figure 1, and details are not described here.
  • the first sending unit 504 is configured to send, by using the first IP address that is allocated by the first allocating unit 501 as a source IP address, the first received by the first receiving unit 503 to the communications node. a session data packet, and sending the second IP address obtained by the first obtaining unit 502 to the communication node, so that after receiving the first session data packet, the communication node uses the second IP
  • the address is the final source IP address, and the first session data packet and the second IP address are delivered to the upper layer of the IP layer of the communication node.
  • the second receiving unit 505 is configured to receive, by the communications node, a second session data packet with the third IP address as the source IP address and the first IP address as the destination IP address.
  • the specific implementation manner is shown in step 105 in Figure 1, and will not be described here.
  • the first sending unit 504 is further configured to send, by using the second IP address obtained by the first acquiring unit 502 as the destination IP address, the second session data packet received by the second receiving unit 505 to the Moving the node device, so that after receiving the second session data packet, the mobile node device uses the second IP address as a final destination IP address, and the second session data packet and the first
  • the two IP addresses are delivered to the upper layer of the IP layer of the mobile node device.
  • the first sending unit 504 is further configured to send, by the first router, the second session data packet received by the second receiving unit 505 to the mobile node device, and the first acquiring unit 502 Obtaining the second IP address to be sent to the mobile node device, so that after receiving the second session data packet, the mobile node device uses the second IP address as a final destination IP address, and Transmitting the second session data packet and the second IP address to The upper layer of the IP layer of the mobile node device.
  • the first router the second session data packet received by the second receiving unit 505
  • the first acquiring unit 502 Obtaining the second IP address to be sent to the mobile node device, so that after receiving the second session data packet, the mobile node device uses the second IP address as a final destination IP address, and Transmitting the second session data packet and the second IP address to The upper layer of the IP layer of the mobile node device.
  • the first receiving unit 503 is specifically configured to: receive, by the mobile node device, the second IP address as a source IP address, and the third
  • the IP address is the first session packet of the destination IP address. For details, refer to step 403 in Figure 4, and details are not described here.
  • the first router further includes:
  • a first replacing unit 506 configured to replace, by using the first IP address allocated by the first allocating unit 501, a second IP address at a source IP address field in the first session data packet received by the first receiving unit 503 .
  • the first receiving unit 503 is specifically configured to: receive, by the mobile node device, the first IP address as a source IP address, and the third
  • the IP address is the first session packet of the destination IP address. For details, refer to step 308 in Figure 3, and details are not described herein.
  • the first router further includes:
  • the third receiving unit 507 is configured to receive a router request message sent by the mobile node device, where the router request message has a first flag bit, the first flag bit is a first value, and the first value is used by Representing that the mobile node device will use the first IP address as the source IP The address performs the transmission of the first session data packet. See the steps in Figure 3 for the specific implementation.
  • the first binding unit 508 is configured to establish, after the third receiving unit 507 receives the router request message, a binding relationship with the communication node by using a proxy binding update message, where the proxy binding update message is included.
  • the first flag bit, the first IP address, and the second IP address are included.
  • a fourth receiving unit 509 configured to receive a proxy binding response message sent by the communications node with respect to the proxy binding update message sent by the first binding unit 508, where the proxy binding response message is used to indicate
  • the communication node agrees that the mobile node device performs the sending of the first session data packet by using the first IP address as a source IP address.
  • the first acquiring unit 502 the first acquiring unit 502:
  • the method is used to acquire session information of the mobile node device by using a centralized device, where the centralized device is configured to record session information of the mobile node device, where the session information includes an identity identifier of the mobile node device.
  • the second IP address and the third IP address are described. For details, refer to step 304 in Figure 3, and details are not described here.
  • the first acquiring unit 502 the first acquiring unit 502:
  • the method is configured to acquire session information of the mobile node device from the second router, where the session information includes an identity identifier of the mobile node device, the second IP address, and a third IP address.
  • the session information includes an identity identifier of the mobile node device, the second IP address, and a third IP address.
  • the first acquiring unit 502 the first acquiring unit 502:
  • the session information is obtained from the mobile node device, where the session information includes an identity identifier of the mobile node device, the second IP address, and a third IP address.
  • the session information includes an identity identifier of the mobile node device, the second IP address, and a third IP address.
  • first router and the second router provided by the embodiments of the present invention are generally first-hop access routers (ARs), which can be used as mobile anchor points to perform mobility management functions. .
  • ARs first-hop access routers
  • the first router provided by the embodiment of the present invention, when the communication node receives the first session data packet and the mobile node device receives the second session data packet, respectively, is allocated by the second router as the mobile node device.
  • the second IP address is the final source IP address and the final destination IP address, thereby ensuring that the session initiated by the mobile node device at the second router where it is located is not interrupted, and because the first router sends the first node to the communication node.
  • the first IP address assigned by the first router to the mobile node device is the source IP address
  • the second session data packet sent by the communication node to the first router uses the first IP address as the destination IP address. An address such that the first router does not need to establish a communication tunnel when communicating with the communication node.
  • a first router includes: a first processor 61, configured to allocate a first IP address to a mobile node device.
  • a first processor 61 configured to allocate a first IP address to a mobile node device.
  • the first receiver 62 is configured to acquire a second IP address and a third IP address of the communication node, where the second IP address is allocated by the second router where the mobile node device is located for the mobile node device.
  • the second IP address is allocated by the second router where the mobile node device is located for the mobile node device.
  • the first receiver 62 is further configured to receive a first session data packet sent by the mobile node device.
  • a first session data packet sent by the mobile node device.
  • a first transmitter 63 configured to send, by using the first IP address allocated by the first processor 61, a first session data packet to the communication node, and send the second IP address to the a communication node, such that after receiving the first session data packet, the communication node uses the second IP address as a final source IP address, and the first session data packet and the second IP address
  • the address is delivered to the upper layer of the IP layer of the communication node.
  • the first receiver 62 is further configured to receive, by the communication node, a second session data packet with the third IP address as the source IP address and the first IP address as the destination IP address.
  • the specific implementation is shown in step 105 in Figure 1, and is not described here.
  • the first transmitter 63 is further configured to directly use the second IP address as the destination IP address. Transmitting, by the first receiver 62, the second session data packet to the mobile node device, so that after receiving the second session data packet, the mobile node device uses the second IP address as a final The destination IP address, and the second session data packet and the second IP address are delivered to an upper layer of the IP layer of the mobile node device.
  • the specific implementation refer to step 106 in Figure 1, and details are not described here.
  • the first transmitter 63 is further configured to send, by the first router, the second session data packet received by the first receiver 62 to the mobile node device, and send the second IP address to the Moving the node device, so that after receiving the second session data packet, the mobile node device uses the second IP address as a final destination IP address, and the second session data packet and the first The two IP addresses are delivered to the upper layer of the IP layer of the mobile node device.
  • the mobile node device uses the second IP address as a final destination IP address, and the second session data packet and the first The two IP addresses are delivered to the upper layer of the IP layer of the mobile node device.
  • the first receiver 62 is specifically configured to:
  • the mobile node device Receiving, by the mobile node device, the second IP address as a source IP address, and the third IP address as a first session data packet of a destination IP address. For details, refer to step 403 in Figure 4, and details are not described here.
  • the first processor 61 the first processor 61
  • the first receiver 62 is specifically configured to: receive, by the mobile node device, the first IP address as a source IP address, and the third
  • the IP address is the first session packet of the destination IP address. For details, refer to step 308 in Figure 3, and details are not described herein.
  • the first receiver 62 the first receiver 62
  • a router request message sent by the mobile node device where the router request message has a first flag bit, the first flag bit is a first value, and the first value is used to indicate the mobile
  • the node device will perform the sending of the first session data packet with the first IP address as the source IP address.
  • the router request message has a first flag bit
  • the first flag bit is a first value
  • the first value is used to indicate the mobile
  • the node device will perform the sending of the first session data packet with the first IP address as the source IP address.
  • the first transmitter 63 is further configured to establish a binding relationship with the communication node by using a proxy binding update message, where the proxy binding update message carries the first flag bit, the first IP address, and the first Two IP addresses.
  • the proxy binding update message carries the first flag bit, the first IP address, and the first Two IP addresses.
  • the first receiver 62 is further configured to receive a proxy binding response message sent by the communications node with respect to the proxy binding update message, where the proxy binding response message is used to indicate that the communications node agrees to
  • the mobile node device transmits the session data packet by using the first IP address as the source IP address.
  • the first receiver 62 refers to step 306 in Figure 3, and details are not described herein.
  • the method is further configured to acquire session information of the mobile node device by using a centralized device, where the centralized device is configured to record session information of the mobile node device, where the session information includes an identity identifier of the mobile node device.
  • the second IP address and the third IP address are described. For the specific implementation, refer to step 304 in Figure 3, and details are not described here.
  • the first receiver 62 the first receiver 62
  • the method is further configured to acquire session information of the mobile node device from the second router, where the session information includes an identity identifier of the mobile node device, the second IP address, and a third IP address.
  • the session information includes an identity identifier of the mobile node device, the second IP address, and a third IP address.
  • the first receiver 62 the first receiver 62
  • the session information including an identity flag of the mobile node device, the second IP address, and a third IP address.
  • the session information including an identity flag of the mobile node device, the second IP address, and a third IP address.
  • the second router when the communication node receives the first session data packet and the mobile node device receives the second session data packet, the second router is the mobile node device.
  • the assigned second IP address is the final source IP address and the final destination IP address, thereby ensuring that the session initiated by the mobile node device at the second router where it is located is not interrupted, and because the first router is to the communication node
  • the first IP address assigned by the first router to the mobile node device when the first session data packet is sent is the source IP address
  • the second session data packet sent by the communication node to the first router uses the first IP address as the destination IP address, so that the first router does not need to establish a communication tunnel when communicating with the communication node.
  • the embodiment of the present invention avoids the application communication tunnel when the mobile node device ensures that the session initiated by the second router where the mobile node is located is not interrupted, thereby saving distributed mobility management. Session cost.
  • the mobile node device provided by the embodiment of the present invention includes:
  • the first receiving unit 71 is configured to receive the first IP address allocated by the first router after being attached to the first router. For details, refer to step 201 in Figure 2, and details are not described here.
  • the first sending unit 72 is configured to send the first session data packet to the first router, so that the first router sends the first session data packet to the communication node by using the first IP address as a source IP address. Transmitting, to the communication node, a second IP address of the second router where the mobile node device is located, and then causing the communication node to use the second IP after receiving the first session data packet.
  • the address is the final source IP address, and the first session data packet and the second IP address are delivered to the upper layer of the IP layer of the communication node.
  • the second receiving unit 73 is configured to receive the second session data packet that is sent by the first router by using the second IP address as a destination IP address, or to receive the first Two session data packets and the second IP address. See the specific implementation Step 203 and step 204 are shown in FIG. 2, and details are not described herein again.
  • the submitting unit 74 is configured to use the second IP address as the final destination IP address, and submit the second session data packet and the second IP address received by the second receiving unit 73 to the mobile node device.
  • the upper layer of the IP layer For the specific implementation, refer to step 205 in Figure 2, and the details are not described here.
  • the first sending unit 72 is specifically configured to:
  • the first session data packet is sent to the first router by using the second IP address as a source IP address and the third IP address as a destination IP address. For details, refer to step 403 in Figure 4, and details are not described here.
  • the first sending unit 72 is specifically configured to:
  • the first session data packet is sent to the first router by using the first IP address as a source IP address and the third IP address as a destination IP address.
  • first IP address as a source IP address
  • third IP address as a destination IP address.
  • the mobile node device further includes:
  • a second sending unit 75 configured to send a router request message to the first router, where the router request message carries a first flag, the first flag is a first value, and the first value is used Representing that the mobile node device will transmit the first session data packet with the first IP address as a source IP address.
  • the mobile node device provided by the embodiment of the present invention may be a mobile phone, a mobile phone, or the like, but is not limited thereto.
  • the mobile node device when the communication node receives the first session data packet and the mobile node device receives the second session data packet, respectively, the second IP address assigned by the second router to the mobile node device is the final Source IP address and final destination IP address, thereby ensuring that the mobile node device does not interrupt the session initiated by the second router where it is located, and because the first router sends the first session data packet to the communication node,
  • the first IP address assigned by the first router to the mobile node device is a source IP address
  • the second session data packet sent by the communication node to the first router uses the first IP address as the destination IP address, thereby causing the The first router does not need to establish a communication tunnel when communicating with the communication node.
  • the embodiment of the present invention avoids the application communication tunnel when the mobile node device ensures that the session initiated by the second router where the mobile node is located is not interrupted, thereby saving distributed mobility management. Session cost.
  • a mobile node device includes: a first receiver 81, configured to receive a first IP address allocated by the first router after being attached to the first router.
  • a first receiver 81 configured to receive a first IP address allocated by the first router after being attached to the first router.
  • the first transmitter 82 is configured to send the first session data packet to the first router, so that the first router sends the first node to the communication node by using the first IP address as a source IP address. a session data packet, and sending a second IP address of the second router where the mobile node device is located to the communication node, so that after receiving the first session data packet, the communication node
  • the second IP address is the final source IP address, and the first session data packet and the second IP address are delivered to an upper layer of the IP layer of the communication node.
  • the first receiver 81 is further configured to receive the second session data packet that is sent by the first router by using the second IP address as a destination IP address, or to receive the a second session data packet and the second IP address.
  • the first receiver 81 is further configured to receive the second session data packet that is sent by the first router by using the second IP address as a destination IP address, or to receive the a second session data packet and the second IP address.
  • the first processor 83 is configured to use the second IP address as a final destination IP address, and submit the second session data packet and the second IP address received by the first receiver 81 to the mobile node device.
  • the upper layer of the IP layer For details, refer to step 205 in Figure 2, and details are not described here.
  • the first transmitter 82 is specifically configured to:
  • the first session data packet is sent to the first router by using the second IP address as a source IP address and the third IP address as a destination IP address. For details, refer to step 403 in Figure 4, and details are not described here.
  • the first transmitter 82 is specifically configured to:
  • the first transmitter 82 is further configured to:
  • the first IP address is a source IP address for transmitting the first session data packet.
  • the mobile node device provided by the embodiment of the present invention may be a mobile phone, a mobile phone, or the like, but is not limited thereto.
  • the second IP address assigned by the second router to the mobile node device is respectively The final source IP address and the final destination IP address, thereby ensuring that the session initiated by the mobile node device at the second router where it is located is not interrupted, and because the first router sends the first session data packet to the communication node.
  • the first IP address assigned by the first router to the mobile node device is the source IP address
  • the second session data packet sent by the communication node to the first router uses the first IP address as the destination IP address, thereby The first router does not need to establish a communication tunnel when communicating with the communication node.
  • the embodiment of the present invention ensures that the mobile node device avoids the application communication tunnel in the case that the session initiated by the second router where the mobile node is located is not interrupted, thereby saving the distribution. Session cost for mobility management.
  • the session system for distributed mobility management includes the first router 91, the second router 92, the mobile node device 93, and the communication node 94.
  • the first router 91 is configured to allocate a first IP address to the mobile node device 93, obtain a second IP address, and a third IP address of the communication node 94, where the second IP address is the previous location of the mobile node device 93.
  • the second router 92 is allocated to the mobile node device 93, receives the first session data packet sent by the mobile node device 93, and sends the first session to the communication node 94 with the first IP address as the source IP address. a session data packet, and sending the second IP address to the communication node 94, and receiving the second session data of the communication node 94 with the third IP address as the source IP address and the first IP address as the destination IP address. Transmitting, by using the second IP address as the destination IP address, the second session data packet to the mobile node device 93, or sending the second session data packet to the mobile node device 93, and The second IP address is sent to the mobile node device 93.
  • the mobile node device 93 is configured to receive a first IP address allocated by the first router 91, send a first session data packet to the first router 91, and receive, by the first router 91, the first IP address.
  • the second session data packet whose IP address is the destination IP address, or the second session data packet sent by the first router 91 and the second IP address, with the second IP address as the final purpose IP address and the second session packet and The second IP address is delivered to the upper layer of the IP layer of the mobile node device 93.
  • the communication node 94 is configured to: after receiving the first session data packet sent by the first router 91, use the second IP address as a final source IP address, and the first session data packet and The second IP address is delivered to the upper layer of the IP layer of the communication node 94, and the third IP address is used as the source IP address, and the first IP address is used as the destination IP address to send the second session data packet to the first router 91.
  • the distributed mobility management session system allocates the first session data packet and the mobile node device receives the second session data packet by using the second router as the mobile node device.
  • the second IP address is the final source IP address and the final destination IP address, thereby ensuring that the session initiated by the mobile node device at the second router where it is located is not interrupted, and because the first router sends the communication to the communication node.
  • the first session data packet is configured with the first IP address assigned by the first router as the mobile node device as the source IP address, and the second session data packet sent by the communication node to the first router is for the first IP address.
  • the IP address such that the first router does not need to establish a communication tunnel when communicating with the communication node.
  • the embodiment of the present invention avoids the application communication tunnel when the mobile node device ensures that the session initiated by the second router where the mobile node is located is not interrupted, thereby saving distributed mobility management. Session cost.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a readable storage medium, such as a floppy disk of a computer.
  • a hard disk or optical disk or the like includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.

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

Abstract

Les modes de réalisation de l'invention portent sur le domaine de communications, et concernent un procédé, un appareil et un système de gestion de mobilité distribuée, qui permettent de résoudre le problème de coût élevé d'un processus de session existante pour une gestion de mobilité. Le procédé comprend les étapes suivantes : un premier routeur attribue une première adresse IP à un appareil de nœud mobile, et obtient une seconde adresse IP précédente de l'appareil de nœud mobile et une troisième adresse IP d'un nœud de communication ; recevoir un premier paquet de données de session envoyé par l'appareil de nœud mobile ; envoyer le premier paquet de données de session et la seconde adresse IP au nœud de communication en utilisant la première adresse IP comme adresse IP source ; recevoir un second paquet de données de session avec la première adresse IP comme adresse IP de destination depuis le nœud de communication ; envoyer directement le second paquet de données de session à l'appareil de nœud mobile en utilisant la seconde adresse IP comme adresse comme adresse IP de destination ; ou envoyer le second paquet de données de session et la seconde adresse IP à l'appareil de nœud mobile. L'invention peut être utilisée pour un système de gestion de mobilité distribuée.
PCT/CN2012/081779 2012-09-21 2012-09-21 Procédé, appareil et système de session pour gestion de mobilité distribuée WO2014043901A1 (fr)

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PCT/CN2012/081779 WO2014043901A1 (fr) 2012-09-21 2012-09-21 Procédé, appareil et système de session pour gestion de mobilité distribuée
CN201280004180.XA CN103891316B (zh) 2012-09-21 2012-09-21 分布式移动性管理的会话方法、装置及系统

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