WO2009143723A1 - Method, system and node for keeping session continuity at the time of handover between different domains - Google Patents
Method, system and node for keeping session continuity at the time of handover between different domains Download PDFInfo
- Publication number
- WO2009143723A1 WO2009143723A1 PCT/CN2009/071116 CN2009071116W WO2009143723A1 WO 2009143723 A1 WO2009143723 A1 WO 2009143723A1 CN 2009071116 W CN2009071116 W CN 2009071116W WO 2009143723 A1 WO2009143723 A1 WO 2009143723A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- domain
- mobile
- session
- address information
- node
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 34
- 230000006854 communication Effects 0.000 claims description 46
- 238000004891 communication Methods 0.000 claims description 44
- 238000010295 mobile communication Methods 0.000 abstract description 2
- 230000004044 response Effects 0.000 description 20
- 238000010586 diagram Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000013507 mapping Methods 0.000 description 4
- 238000013475 authorization Methods 0.000 description 3
- 230000011664 signaling Effects 0.000 description 3
- 206010055171 Hypertensive nephropathy Diseases 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
- H04W80/08—Upper layer protocols
- H04W80/10—Upper layer protocols adapted for application session management, e.g. SIP [Session Initiation Protocol]
Definitions
- the present invention relates to the field of mobile communications, and in particular, to a method, system and node for maintaining a continuous session when switching between different domains.
- Mobile IP technology As a technology of network layer mobility management, mobile IP technology has the characteristics of being independent of the lower layer access protocol and physical transmission medium, and transparent to the upper layer protocol application.
- Mobile Internet Protocol version 6, Mobile Internet Protocol version 6, ⁇
- Proxy Mobile Internet Protocol version 6, Prov. Mobile Internet Protocol version 6, ⁇
- MIPv6 ensures that when the address of the mobile node (MN) changes, the MN and the Correspondent Node (CN) can still maintain normal communication, that is, the address change does not affect the upper layer communication.
- (1) defines the home address (HoA).
- HoA home address
- the upper layer communication application uses HoA throughout, ensuring transparency to the application's movement;
- the MN When the MN is in the home link, it communicates with the CN according to the traditional routing technology, and does not require the intervention of MIPv6.
- the MN's home address remains unchanged, and a temporary IP address, CoA, is obtained.
- the MN informs the HA (Home Agent) through the Binding Update (BU) message through the mapping relationship between the HoA and the CoA.
- the communication between the MN and the CN still uses the home address of the MN, and the data packet is still sent to the MN.
- the MN informs the CN of the mapping relationship between the HoA and the CoA.
- the CN knows the CoA of the MN, it can directly forward the data packet to the foreign network segment where the CoA is located, so that the MN and the CN Normal communication can be performed directly.
- This communication process is also referred to as a route-optimized communication process.
- ⁇ The purpose of ⁇ is to provide a network-based mobility management protocol. ⁇ There is no need to participate in any mobility management signaling in the PMIPv6 domain.
- the mobile entities in the network track the mobility of the , and initialize the mobile signaling and the routing state required to establish the communication.
- the core functional entities in the ⁇ 6 domain are the Local Mobility Anchor (LMA) and the Mobile Access Gateway (MAG).
- LMA is responsible for maintaining the reachability status of the MN and is topologically anchored to the MN's Home Network Prefix (HNP).
- HNP Home Network Prefix
- the MAG is an entity that performs mobility management on behalf of the MN, is responsible for detecting the mobility of the MN on its access link, and sends a PBU message to the LMA of the MN.
- the MAG on the access link After identifying the MN and obtaining its identity, will confirm whether the MN is authorized to the network mobility management service. If the system confirms that a network mobility management service needs to be provided to the MN, the system will ensure that the MN uses any of the address configuration mechanisms allowed by the network to enable the MN to obtain the address configuration on the interface and move anywhere in the PMIPv6 domain.
- the obtained address configuration includes the address from its HNP, the address of the default router on the link, and other related parameter configurations. From the perspective of the MN, the entire PMIPv6 domain can be regarded as a single link, and the system guarantees that the address configuration obtained by the MN does not change and is always considered to be on the same link.
- the LMA will assign a unique HNP to each interface, so that the interface configures the home address according to the respective HNP. If the MN switches from one interface to another in the same PMIPv6 domain, the LMA will assign the same HNP to the new interface.
- the LMA acts as a topological anchor for the MN and receives any packets sent to the MN.
- the LMA receives the destination address prefix as
- the packet After the HNP packet of the MN, the packet is forwarded to the MAG through the bidirectional tunnel.
- the MAG receives the encapsulated packet, removes the outer packet header, and forwards it to the MN on the access link.
- the MAG forwards the packet to the LMA through the bidirectional tunnel after receiving any packet sent to the CN.
- the LMA releases the outer packet header and routes the packet to 0.
- the MN After the MN obtains the initial address configuration in the PMIPv6 domain, if the MN changes its access link, the MAG on the new access link will send signaling to the LMA for updating the binding and routing status. MN will continue to receive its corresponding HNP Router Advertisement (RA) message, which makes the MN believe that it is still on the same link, and that the MN uses the same address configuration on the new access link.
- RA HNP Router Advertisement
- the MAG When the MN is in the PMIPv6 domain, after the MN bootstraps, the MAG obtains the LMA address and the HNP of the MN through the corresponding path.
- the MN uses the HNP to configure the corresponding HoA and communicates with the CN.
- the MN After the MN switches to the MIPv6 domain, the MN obtains the HA address through the relevant path. If the HA address is different from the previous LMA address, the MN will be assigned HNP1 different from the previous HNP, so that the MN will configure a new ⁇ 1 according to the new HNP1.
- the CN that communicates with the MN in the PMIPv6 domain still uses the previous HoA of the MN as the destination address to send the message to the MN. However, the home address of the MN has changed to ⁇ , so the message sent by the CN will be lost, causing the session to be interrupted. . Conversely, similar problems occur when the MN moves from the MIPv6 domain to the PMIP
- embodiments of the present invention provide a method, system, and node for maintaining a continuous session when switching between different domains.
- the technical solution is as follows:
- a method for maintaining a session continuity when switching between different domains comprising:
- the mobile node establishes a session connection with the communication node in the first mobility domain
- the session with the communication node is implemented by using the anchor device address information stored in the first mobile domain before the handover.
- a mobile node comprising:
- an obtaining module configured to acquire, when the mobile node switches from the first mobile domain to the second mobile domain, the anchor device address information saved in the first mobile domain before the handover;
- a system for maintaining a continuous session comprising:
- the information storage device stores anchor device address information before the mobile node switches from the first mobile domain to the second mobile domain;
- the session with the communication node is implemented by using the anchor device address information saved by the information storage device.
- the technical solution of the embodiment of the present invention moves when the mobile node performs handover in the first mobile domain and the second mobility domain.
- the node uses the anchor device address information stored in the first mobile domain before the handover to conduct a session with the communication node, and can ensure that the mobile node maintains the session with the communication node continuously without interruption when switching between different domains.
- FIG. 1 is a schematic diagram of a method for maintaining a continuous session when a mobile node switches between different domains when the MN switches from the PMIPv6 domain to the MIPv6 domain according to Embodiment 1 of the present invention
- FIG. 2 is a schematic diagram of a method for maintaining a continuous session when a mobile node switches between different domains when the MN switches from the MIPv6 domain to the PMIPv6 domain according to Embodiment 1 of the present invention
- FIG. 3 is a schematic diagram of another method for maintaining a continuous session when a mobile node switches between different domains when the MN switches from a PMIPv6 domain to a MIPv6 domain according to Embodiment 2 of the present invention
- FIG. 4 is a schematic diagram of another method for maintaining a continuous session when a mobile node switches between different domains when the MN switches from the MIPv6 domain to the PMIPv6 domain according to Embodiment 2 of the present invention
- FIG. 5 is a schematic diagram of another method for maintaining a continuous session of a mobile node when switching between different domains when the MN switches from the PMIPv6 domain to the MIPv6 domain according to Embodiment 3 of the present invention
- FIG. 6 is a schematic structural diagram of a mobile node according to Embodiment 4 of the present invention.
- FIG. 7 is a schematic structural diagram of a system for maintaining a continuous session according to Embodiment 4 of the present invention.
- An embodiment of the present invention provides a method for maintaining a continuous session when a mobile node switches between different domains.
- the method saves an anchor device address information by using an Authentication, Authorization, and Accounting (AAA) server.
- AAA Authentication, Authorization, and Accounting
- the MN When switching between the PMIPv6 domain and the MIPv6 domain, the MN performs a session with the communication node by using the anchor device address information saved by the AAA server before the handover, so that the normal session between the MN and the CN can be continuously interrupted.
- the anchor device refers to the LMA in the PMIPv6 domain and the HA in the MIPv6 domain.
- the AAA server can be called an information storage device. The following describes the application scenarios in which the MN switches from the PMIPv6 domain to the MIPv6 domain and the MN switches from the MIPv6 domain to the PMIPv6 domain.
- the application scenario of the MN moving from the PMIPv6 domain to the MIPv6 domain is as follows: 101: The MN is connected to an access link of the PMIPv6 domain, and the MAG on the access link obtains the identifier of the MN, and sends a PBU message to the LMA, where the PBU message includes the MN related to the MAG address, the identifier of the MN, and the like. information.
- the LMA receives the PBU message, allocates a unique HNP to the MN, and sends an access request message to the AAA server, requesting to verify whether the MAG is legally authorized, and the access request message includes the MAG address, the LMA address, and the HNP of the MN. , MN identification and other MN related information.
- the bearer mode of the foregoing information depends on the specific form of the access request message, for example, by defining an AVP (Attribute Value Pair) attribute in the AAA message.
- AVP Attribute Value Pair
- the AAA server receives the access request message, and verifies whether the MAG is legally authorized. If the MAG is legally authorized, the device returns an access reply message to the LMA, and saves the MAG address, the LMA address, and the MN in the access request message. MN related information such as HNP and MN identity.
- the access response message includes information for verifying the legal authorization of the MAG.
- the LMA receives the access response message, and sends a Proxy Banding Acknowledgement (PBA) message to the MAG according to the information in the access response message that is verified by the MAG legal authorization.
- PBA Proxy Banding Acknowledgement
- the access authentication of the MN is completed through interaction with the AAA server.
- the AR obtains the LMA address information of the MN in the PMIPv6 domain and other MN related information from the AAA server.
- the AR sends an AAA request message to the AAA server, requesting to obtain the MN related information.
- the AAA server receives the AAA request message, and sends the MN related information such as the LMA address information of the MN in the PMIPv6 domain to the AR in the AAA response message.
- the AR obtains the MN related information, such as the LMA address information of the MN in the PMIPv6 domain, from the received AAA response message, and sends an RA message to the MN, where the RA message includes the foreign link prefix information.
- MN related information such as the LMA address information of the MN in the PMIPv6 domain
- the MN configures the CoA according to the foreign link prefix information in the RA message, and sends a Dynamic Host Configuration Protocol (DHCP) Request message to the AR, requesting to obtain related information of the MN, including obtaining the LMA address. HNP and other information.
- DHCP Dynamic Host Configuration Protocol
- the AR After receiving the DHCP Request message, the AR adds a relay option to the DHCP Request message if the AR is a DHCP relay.
- the relay option carries the LMA address information obtained from the AAA server and carries the LMA.
- the DHCP Request message of the address information is sent to the DHCP server, and then the 108-110 is executed; if the AR is a DHCP proxy, the DHCP reply message is directly returned to the MN, and the DHCP reply message carries the MN obtained from the AAA server in the PMIPv6 domain.
- the LMA address information, the MN uses the LMA address information obtained from the DHCP reply message to conduct a session with the CN.
- the DHCP server After receiving the DHCP Request message, the DHCP server returns a DHCP reply message to the AR, where the DHCP reply message carries the LMA address information of the MN in the PMIPv6 domain obtained from the AR.
- the AR relays a DHCP Reply message to the MN.
- the MN receives the DHCP Reply message, obtains the LMA address information in the PMIPv6 domain, and establishes a tunnel with the LMA by using the obtained LMA address information, and implements a session with the CN through the tunnel.
- the MN after the MN obtains the address information of the LMA, the MN considers the address as the address of the home agent, and uses the address to establish a tunnel with the LMA.
- the application scenario of the MN moving from the MIPv6 domain to the PMIPv6 domain is as follows:
- the MN completes the access authentication in the MIPv6 domain, and obtains the HA address in the bootstrap process through related channels.
- the MN obtains the HA address in the bootstrap process is a prior art and will not be described again.
- the MN sends a BU message to the HA, where the BU message includes information such as the MN's CoA, Ho A, and MN identity.
- the HA receives the BU message, allocates a unique HNP to the MN, and sends an access request message to the AAA server, where the access request message includes the MN related information such as the HA address and the identifier of the MN.
- the AAA server receives the access request message, returns an access response message to the HA, and saves the HA address in the access request message and related information of other MNs.
- the HA receives the access response message, and sends a Binding Acknowledgement (BA) message to the MN.
- BA Binding Acknowledgement
- the MAG When the MN is switched from the MIPv6 domain to the PMIPv6 domain, the MAG obtains the identity of the MN in the MN access authentication process, and sends an AAA request message to the AAA server to obtain the HA address information of the MN in the MIPv6 domain.
- the AAA server receives the AAA request message, and sends the HA address information of the MN in the MIPv6 domain to the MAG in the AAA response message.
- the MAG receives the AAA response message, obtains the HA address information of the MN in the MIPv6 domain, and establishes a tunnel between the obtained HA address information and the HA.
- the MAG in the PMIPv6 domain, after the MAG obtains the address information of the HA, the MAG considers the address as the address of the local mobility anchor, and uses the address to establish a tunnel with the LMA.
- the MN uses the tunnel established between the MAG and the HA to conduct a session with the CN.
- the anchor device address information is saved by the AAA server.
- the MN switches between the PMIPv6 domain and the MIPv6 domain, the MN performs a session with the CN by using the anchor device address information saved on the AAA server before the handover. Thereby, it is possible to ensure that the session between the MN and the CN is continuously uninterrupted.
- Example 2
- the anchor device address information is saved by using another information storage device.
- the MN switches between the PMIPv6 domain and the MIPv6 domain
- the MN uses the anchor device address information saved by the information storage device.
- CN conducts a conversation.
- other information storage devices use a domain name server (DNS) as an example, but the actual application is not limited to DNS.
- DNS domain name server
- the anchor device refers to the LMA in the PMIPv6 domain and the HA in the MIPv6 domain. The following describes the application scenarios in which the MN switches from the PMIPv6 domain to the MIPv6 domain and the MN switches from the MIPv6 domain to the ⁇ domain.
- the application scenario of the method for moving from the PMIPv6 domain to the MIPv6 domain is as follows:
- the MN completes access authentication in the PMIPv6 domain.
- the MAG sends a PBU message to the LMA, requesting registration for the MN.
- the LMA receives the PBU message, and if the MN is successfully registered, sends a DNS update request message to the DNS, where the DNS update request message carries the MN related information such as the LMA address of the MN, the home network prefix, the MN identity, and the multi-interface information.
- the specific update request message depends on the selection of the specific information storage network element. Since the DNS is used as the information storage device in this embodiment, the format of the update request message conforms to the standard of the DNS message format.
- the DNS receives the DNS update request message, and saves the MN related information such as the LMA address, the home network prefix, the MN identity, and the multi-interface information in the DNS update request message, and returns an update response message to the LMA.
- MN related information such as the LMA address, the home network prefix, the MN identity, and the multi-interface information in the DNS update request message
- the LMA After receiving the update response message, the LMA sends a PBA message to the MAG.
- the DNS receives the DNS request message, and sends the LMA address information of the MN stored in the PMIPv6 domain to the MN.
- the MN receives the DNS response message, obtains the LMA address information of the MN in the PMIPv6 domain, and establishes a tunnel with the LMA by using the obtained LMA address information, and implements a session with the CN through the tunnel.
- the MN in the MIPv6 domain, after the MN obtains the address information of the LMA, the MN considers the address as the address of the home agent, and uses the address to establish a tunnel with the LMA.
- the application scenario of the MN moving from the MIPv6 domain to the PMHV6 is as follows:
- the MN completes the access authentication in the MIPv6 domain.
- 402 The MN sends a BU message to the HA requesting registration.
- the HA After receiving the BU message, the HA sends a BA message to the MN if the MN is successfully registered, and sends a DNS update request message to the DNS, where the DNS update request message carries the HA address of the MN, the home network prefix, and the MN.
- MN related information such as identification and multi-interface information.
- the DNS receives the DNS update request message, saves the MN related information such as the HA address, the home network prefix, the MN identifier, and the multi-interface information of the MN in the DNS update request message, and returns a DNS update response message to the HA, indicating that the update is successful. .
- the HA receives the DNS update response message and sends a BA message to the MN.
- the MAG After obtaining the identifier of the MN, the MAG sends a DNS request message to the DNS, requesting to obtain information about the MN.
- the DNS receives the DNS request message, and sends the HA address information of the MN in the MIPv6 domain to the MAG in the DNS response message.
- the MAG receives the DNS response message, obtains the HA address information of the MN in the MIPv6 domain, and uses the obtained
- a tunnel is established between the HA address information and the HA.
- the MAG in the PMIPv6 domain, after the MAG obtains the address information of the HA, the MAG considers the address as the address of the local mobility anchor, and uses the address to establish a tunnel with the LMA.
- the MN uses the tunnel established between the MAG and the HA to talk to the CN.
- the anchor device address information is saved by the domain name server DNS.
- the MN uses the pre-switch domain name server DNS to save the anchor device address information to perform a session with the CN.
- the MN uses the pre-switch domain name server DNS to save the anchor device address information to perform a session with the CN.
- the MMA stores the LMA address information of the MN in the PMIPv6 domain by using the MAG.
- the AR obtains and saves the LMA address information of the MN in the PMIPv6 domain from the MAG.
- the MAG uses the LMA address information to establish a tunnel with the HA, and the MN uses the tunnel between the MAG and the HA to conduct a session with the CN, thereby ensuring that the session between the MN and the CN is continuous.
- Interrupt where the MAG can be referred to as other information storage devices.
- the details of this embodiment are as follows: 501: When the MN is in the PMIPv6 domain, the MAG obtains and saves the LMA address through the related path.
- the MN switches from the PMIPv6 domain to the MIPv6 domain, the context between the AR and the MAG in the PMIPv6 domain is requested.
- the seek/response message acquires and saves the LMA address and other MN related information.
- the methods for the AR to obtain the LMA address and other MN related information are as follows:
- the AR sends a context request message to the MAG, requesting to acquire the LMA address information and other MN related information.
- the MAG After receiving the context request message, the MAG sends the LMA address and other MN related information carrying the context response message to the AR.
- the AR receives the context response. The message, and save the LMA address information and other MN related information in the context response message.
- the MAG directly informs the AR by transmitting the LMA address information and other MN related information by carrying the message in the context; the AR acquires and saves the LMA address and other MN related information.
- the MN completes access authentication in the MIPv6 domain.
- the MN obtains the CoA of the MIPv6 domain on the access link, and sends a DHCP Request message to the AR, requesting to obtain the MN related information, including the LMA address, HNP, and the like.
- the AR After receiving the DHCP Request message, the AR adds a relay option to the DHCP Request message if the AR is a DHCP relay.
- the relay option carries the obtained LMA address information and carries the LMA address information.
- the DHCP Request message is sent to the DHCP server, and 506-508 is performed; if the AR is a DHCP proxy, the DHCP reply message is directly sent to the MN, where the DHCP reply message carries the LMA address information, and the MN obtains the PMIPv6 domain. LMA address information, and use the acquired LMA address information to talk with the CN.
- the DHCP server After receiving the DHCP Request message, the DHCP server returns a DHCP reply message to the AR, where the DHCP reply carries the LMA address information obtained from the AR.
- the AR relays a DHCP Reply message to the MN.
- the MN receives the DHCP Reply message, obtains the LMA address information of the PMIPv6 domain, and establishes a tunnel with the LMA by using the obtained LMA address information, and performs a normal session with the CN through the tunnel.
- the MN after the MN obtains the address information of the LMA, the MN considers the address as the address of the home agent, and uses the address to establish a tunnel with the LMA.
- the MAG of the PMIPv6 domain saves the LMA address information of the MN in the PMIPv6 domain, when
- the AR of the MIPv6 domain obtains and saves the LMA address information of the MN in the PMIPv6 domain from the MAG, and provides the LM address information of the MN in the PMIPv6 domain to the MN, and the MN uses the LMA address information and the HA.
- LMA of the SPPMIPv6 domain Establishes a tunnel, and the MN uses the tunnel to conduct a session with the CN, thereby ensuring continuous uninterrupted sessions between the MN and the CN.
- the embodiment of the invention provides a mobile node, and the specific function description of the mobile node is as follows: A mobile domain establishes a session connection with a communication node.
- the session with the communication node is implemented using the anchor device address information saved in the first mobile domain before the handover.
- the situation of implementing the session with the communication node by using the anchor device address information saved in the first mobile domain before the handover can be divided into two types:
- the mobile node establishes a tunnel with the anchor device by using the anchor device address information, and uses the tunnel to implement a session with the communication node in the second mobile domain.
- the mobile node implements a session with the communication node in the second mobile domain by using a tunnel established between the mobile access gateway MAG and the anchor device, and the tunnel uses the anchor point saved from the first mobile domain by the mobile access gateway MAG.
- Device address information is established between anchor devices.
- the first mobility domain is a PMIPv6 domain
- the second mobility domain is a MIPv6 domain
- the first mobility domain is a MIPv6 domain
- the second mobility domain is a PMIPv6 domain
- a typical mobile node includes:
- the obtaining module 601 is configured to: when the mobile node switches from the first mobile domain to the second mobile domain, obtain the anchor device address information saved in the first mobile domain before the handover; where, how to obtain the first mobile domain before saving For the anchor device address information, refer to the corresponding description of the method embodiment, and details are not described herein again.
- the session module 602 is configured to establish a tunnel with the anchor device by using the obtained anchor device address information, and implement a session with the communication node in the second mobility domain by using the established tunnel.
- the session module 602 includes:
- a tunnel establishment sub-module 6021 configured to establish a tunnel with the anchor device by using the anchor device address information
- the session sub-module 6022 is configured to implement a session with the communication node in the second mobility domain by using the established tunnel.
- the mobile node when the mobile node switches from the first mobile domain to the second mobile domain, the mobile node performs a session with the communication node by using the anchor device address information saved before the handover, and can ensure that the mobile node switches between different domains.
- the session with the communication node is kept uninterrupted.
- An embodiment of the present invention provides a system for maintaining a continuous session. As shown in FIG. 7, the system includes:
- Mobile node 701 and information storage device 702 are Mobile node 701 and information storage device 702;
- the information storage device 702 is configured to save anchor device address information before the mobile node 701 switches from the first mobile domain to the second mobile domain;
- the mobile node 701 is configured to implement, in the second mobile domain, the anchor device address information saved on the information information storage device 702 of the first mobile domain before the handover, when the mobile node is switched from the first mobile domain to the second mobile domain.
- the session of the node is configured to implement, in the second mobile domain, the anchor device address information saved on the information information storage device 702 of the first mobile domain before the handover, when the mobile node is switched from the first mobile domain to the second mobile domain.
- the information storage device 702 is an AAA server or a mobile access gateway MAG, and the AAA server or the mobile access gateway MAG saves the anchor before the mobile node 701 switches from the PMIPv6 domain as the first mobile domain to the MIPv6 domain in the second mobility domain.
- Point device address information correspondingly, the mobile node 701 is specifically configured to switch from the ⁇ domain as the first mobile domain to the ⁇ 6 domain as the second mobility domain, and obtain the PMIPv6 domain before the handover by using the access router AR of the MIPv6 domain.
- the anchor device address information stored on the AAA server or the mobile access gateway MAG establishes a tunnel with the anchor device by using the anchor device address information, and uses the tunnel to implement a session with the communication node in the MIPv6 domain.
- the information storage device 702 is a domain name server DNS, and the domain name server DNS saves the anchor device address information before the mobile node 701 switches from the PMIPv6 domain as the first mobile domain to the MIPv6 domain in the second mobility domain; correspondingly, the mobile node 701.
- the domain name server DNS when switching from a PMIPv6 domain that is the first mobile domain to a MIPv6 domain that is the second mobility domain, obtain, from the domain name server DNS, the anchor device address information saved in the PMIPv6 domain before the handover, and use the anchor device address.
- the information establishes a tunnel with the anchor device, and uses the tunnel to implement a session with the communication node in the MIPv6 domain.
- the information storage device 702 is an AAA server or a domain name server DNS
- the AAA server or the domain name server DNS saves the anchor device address before the mobile node 701 switches from the MIPv6 domain as the first mobile domain to the PMIPv6 domain in the second mobility domain.
- the mobile node 701 is specifically configured to implement a session with the communication node in the PMIPv6 domain by using a tunnel between the mobile access gateway MAG and the anchor device, and the tunnel is utilized by the mobile access gateway MAG from the AAA server or the domain name server.
- the anchor device address information obtained on the DNS is established between the anchor devices.
- the mobile node when the mobile node switches from the first mobile domain to the second mobile domain, the mobile node performs a session with the communication node by using the anchor device address information saved before the handover, and can ensure that the mobile node switches between different domains.
- the session with the communication node is kept uninterrupted.
- the technical solution provided by the above embodiments can be implemented by hardware and software, and the software is stored on a readable storage medium, such as a floppy disk, a hard disk or an optical disk of a computer.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
A method, a system and a node for keeping session continuity at the time of handover between different domains are disclosed in the present invention which belongs to mobile communication field. The method includes that: a mobile node establishes a session connection with a correspondent node in the first mobile domain; and when the mobile node is handed over from the first mobile domain to the second mobile domain, the mobile node realizes the session with the correspondent node using the address information of an anchor device stored in the first mobile domain before the handover. The system includes a mobile node and an information storage device. The node includes an acquiring module and a session module. In the technical proposal supplied by the present invention, when the mobile node handed over from the first mobile domain to the second mobile domain, it is assured that the mobile node keeps the session with the correspondent node continuing without interruption when the mobile node is handed over between different domains by using the stored address information of an anchor device before the handover by the mobile node.
Description
在不同域间切换时保持会话连续的方法、 系统及节点 本申请要求于 2008年 05月 27日提交中国专利局、 申请号为 200810097474.7、 发明名 称为"在不同域间切换时保持会话连续的方法、系统及节点"的中国专利申请的优先权,其全 部内容通过引用结合在本申请中。 Method, system and node for maintaining continuous session when switching between different domains This application claims to be submitted to the Chinese Patent Office on May 27, 2008, the application number is 200810097474.7, and the invention name is "the method of maintaining session continuity when switching between different domains" The priority of the Chinese Patent Application, the entire disclosure of which is incorporated herein by reference.
说 Say
技术领域 Technical field
本发明涉及移动通信领域, 特别涉及一种在不同域间切换时保持会话连续的方法、 系 统及节点。 The present invention relates to the field of mobile communications, and in particular, to a method, system and node for maintaining a continuous session when switching between different domains.
书 背景技术 Background technology
移动 IP技术作为网络层移动性管理的技术, 具有与下层接入协议和物理传输介质无关, 对上层协议应用透明等特点。关于移动 IP的协议主要有两种:移动互联网协议版本 6 (Mobile Internet Protocol version 6, ΜΙΡνό ) 和代理移动互联网协议版本 6 (Proxy Mobile Internet Protocol version 6, ΡΜΙΡνό ) 。 As a technology of network layer mobility management, mobile IP technology has the characteristics of being independent of the lower layer access protocol and physical transmission medium, and transparent to the upper layer protocol application. There are two main protocols for mobile IP: Mobile Internet Protocol version 6, (Mobile Internet Protocol version 6, ΜΙΡνό) and Proxy Mobile Internet Protocol version 6, (Prov. Mobile Internet Protocol version 6, ΡΜΙΡνό).
MIPv6保证了当移动节点 (Mobile Node, MN) 的地址发生变化时, MN和通信节点 ( Correspondent Node, CN) 之间仍然能够保持正常通信, 即地址改变不影响上层通信。 MIPv6 ensures that when the address of the mobile node (MN) changes, the MN and the Correspondent Node (CN) can still maintain normal communication, that is, the address change does not affect the upper layer communication.
ΜΙΡνό 对于实现在网络层移动过程中保持通信不断的解决方案可以简单地归纳为三 点: ΜΙΡνό The solution to keep communication going through the network layer movement can be easily summarized into three points:
( 1 )定义了家乡地址(Home Address, HoA)。 上层通信应用全程使用 HoA, 保证了对 应用的移动透明; (1) defines the home address (HoA). The upper layer communication application uses HoA throughout, ensuring transparency to the application's movement;
( 2 ) 定义了转交地址 (Care-of- Address, CoA)。 从外地网络获得 CoA, 保证了现有路 由模式下通信可达; (2) Defines a Care-of-Address (CoA). Obtaining CoA from the foreign network ensures communication is available in the existing routing mode;
( 3 ) 建立了 HoA与 CoA的映射关系, 使上层应用所使用的网络层标识与网络层路由 所使用的目的标识之间建立了关系。 (3) Establishing a mapping relationship between HoA and CoA, so that a relationship is established between the network layer identifier used by the upper layer application and the destination identifier used by the network layer route.
MN和 CN在 MIPv6域中的具体工作流程可简单归纳如下: The specific workflow of MN and CN in the MIPv6 domain can be summarized as follows:
当 MN在家乡链路时, 它与 CN之间按照传统的路由技术进行通信, 不需要 MIPv6的 介入。
当 MN移动到外地链路时, MN的家乡地址保持不变, 同时获得一个临时的 IP地址, 即 CoA。MN把 HoA与 CoA的映射关系通过绑定更新(Banding Update, BU)消息告知 HA(Home Agent, 家乡代理) , MN与 CN之间的通信仍然使用 MN的家乡地址, 数据包仍然发往 MN的 家乡链路; HA截获这《数据包,根据已获得的映射关系通过隧道将数据包转发给 MN的 CoA 所在的网络。 When the MN is in the home link, it communicates with the CN according to the traditional routing technology, and does not require the intervention of MIPv6. When the MN moves to the foreign link, the MN's home address remains unchanged, and a temporary IP address, CoA, is obtained. The MN informs the HA (Home Agent) through the Binding Update (BU) message through the mapping relationship between the HoA and the CoA. The communication between the MN and the CN still uses the home address of the MN, and the data packet is still sent to the MN. Home link; HA intercepts the "data packet, and forwards the data packet through the tunnel to the network where the MN's CoA is located according to the obtained mapping relationship.
作为另一种通信方式, MN会把 HoA与 CoA的映射关系告知 CN, 当 CN知道了 MN 的 CoA后, 可以直接将数据包转发到其 CoA所在的外地网段, 这样 MN与 CN之间就可以 直接进行正常通信。 这个通信过程也被称作路由优化后的通信过程。 As another communication method, the MN informs the CN of the mapping relationship between the HoA and the CoA. When the CN knows the CoA of the MN, it can directly forward the data packet to the foreign network segment where the CoA is located, so that the MN and the CN Normal communication can be performed directly. This communication process is also referred to as a route-optimized communication process.
ΡΜΙΡνό的目的在于提供了一种基于网络的移动性管理协议。 ΜΝ在 PMIPv6域中无 需参与任何的移动性管理信令, 网络中的移动实体跟踪 ΜΝ的移动, 并且初始化移动信令 和建立通信所需的路由状态。 The purpose of ΡΜΙΡνό is to provide a network-based mobility management protocol.无 There is no need to participate in any mobility management signaling in the PMIPv6 domain. The mobile entities in the network track the mobility of the , and initialize the mobile signaling and the routing state required to establish the communication.
ΡΜΙΡν6域中核心功能实体是本地移动锚点 (Local Mobility Anchor, LMA) 和移动接 入网关(Mobile Access Gateway, MAG) 。 LMA负责维护 MN的可达性状态, 并且在拓扑上 作为 MN的家乡网络前缀 (Home Network Prefix, HNP) 的锚点。 MAG是代表 MN执行移动 性管理的实体, 负责在其接入链路上探测 MN的移动, 并且发送 PBU消息至 MN的 LMA。 The core functional entities in the ΡΜΙΡν6 domain are the Local Mobility Anchor (LMA) and the Mobile Access Gateway (MAG). The LMA is responsible for maintaining the reachability status of the MN and is topologically anchored to the MN's Home Network Prefix (HNP). The MAG is an entity that performs mobility management on behalf of the MN, is responsible for detecting the mobility of the MN on its access link, and sends a PBU message to the LMA of the MN.
当 MN进入 PMIPv6域时, 接入链路上的 MAG在识别 MN并且获得其标识后, 将确 认 MN 是否被授权网络移动性管理服务。 如果系统确认需要提供网络移动性管理服务至 MN, 系统将保证 MN使用网络允许的任何一种地址配置机制, 使 MN获得接口上的地址配 置, 并且在 PMIPv6域随处移动。 获得的地址配置包括来自其 HNP的地址、 链路上缺省路 由器的地址和其它相关参数配置。从 MN的角度来看,整个 PMIPv6域可视为一个单一的链 路, 系统保证 MN获得的地址配置不变, 并且始终认为其在同一链路上。 When the MN enters the PMIPv6 domain, the MAG on the access link, after identifying the MN and obtaining its identity, will confirm whether the MN is authorized to the network mobility management service. If the system confirms that a network mobility management service needs to be provided to the MN, the system will ensure that the MN uses any of the address configuration mechanisms allowed by the network to enable the MN to obtain the address configuration on the interface and move anywhere in the PMIPv6 domain. The obtained address configuration includes the address from its HNP, the address of the default router on the link, and other related parameter configurations. From the perspective of the MN, the entire PMIPv6 domain can be regarded as a single link, and the system guarantees that the address configuration obtained by the MN does not change and is always considered to be on the same link.
如果 MN通过多个接口同时连接至 PMIPv6域, LMA将为每个接口分配一个唯一的 HNP, 使得接口根据各自的 HNP配置家乡地址。 如果 MN在相同的 PMIPv6域中从一个接 口切换至另一接口, LMA将分配相同的 HNP至新的接口。 If the MN is simultaneously connected to the PMIPv6 domain through multiple interfaces, the LMA will assign a unique HNP to each interface, so that the interface configures the home address according to the respective HNP. If the MN switches from one interface to another in the same PMIPv6 domain, the LMA will assign the same HNP to the new interface.
LMA作为 MN的拓扑锚点, 接收任何发送至 MN的报文。 LMA收到目的地址前缀为 The LMA acts as a topological anchor for the MN and receives any packets sent to the MN. The LMA receives the destination address prefix as
MN的 HNP的报文后, 通过双向隧道将报文转发至 MAG。 MAG收到封装报文, 解除外层 报文头, 并转发至接入链路上的 MN。 After the HNP packet of the MN, the packet is forwarded to the MAG through the bidirectional tunnel. The MAG receives the encapsulated packet, removes the outer packet header, and forwards it to the MN on the access link.
MAG作为接入链路上的一个缺省网关, 在收到任何发送至 CN的报文后, 将通过双向 隧道将报文转发至 LMA。 LMA收到封装报文后,解除外层报文头,并且路由报文至 0的地。 As a default gateway on the access link, the MAG forwards the packet to the LMA through the bidirectional tunnel after receiving any packet sent to the CN. After receiving the encapsulated packet, the LMA releases the outer packet header and routes the packet to 0.
在 PMIPv6域中 MN获得初始地址配置后, 如果 MN改变其接入链路, 新的接入链路 上的 MAG将发送信令至 LMA,用于更新绑定和路由状态。 MN将继续收到包含其相应 HNP
的路由器通告 (Router Advertisement, RA) 消息, 使 MN相信其仍然在相同链路上, 而且 在新的接入链路上 MN使用相同的地址配置。 After the MN obtains the initial address configuration in the PMIPv6 domain, if the MN changes its access link, the MAG on the new access link will send signaling to the LMA for updating the binding and routing status. MN will continue to receive its corresponding HNP Router Advertisement (RA) message, which makes the MN believe that it is still on the same link, and that the MN uses the same address configuration on the new access link.
实际应用中, 有以下应用场景: In practical applications, the following application scenarios are available:
当 MN在 PMIPv6域时, MN自举后, MAG通过相应途径获得 LMA地址和 MN的 HNP。 MN使用 HNP配置相应的 HoA, 并且与 CN进行通信。 当 MN切换至 MIPv6域后, MN通过相关 途径获得 HA地址, 如果 HA地址不同于先前的 LMA地址, 那么 MN将被分配不同于先前 HNP 的 HNP1 , 这样 MN将根据新的 HNP1配置新的 ΗοΑ1。 而在 PMIPv6域中与 MN通信的 CN, 仍 然使用 MN先前的 HoA作为目的地址发送报文至 MN,但此时 MN的家乡地址已经变为 ΗοΑΙ , 所以 CN发送的报文将丢失, 导致会话中断。 反之, 当 MN从 MIPv6域移动至 PMIPv6域时, 同样会发生类似的问题。 When the MN is in the PMIPv6 domain, after the MN bootstraps, the MAG obtains the LMA address and the HNP of the MN through the corresponding path. The MN uses the HNP to configure the corresponding HoA and communicates with the CN. After the MN switches to the MIPv6 domain, the MN obtains the HA address through the relevant path. If the HA address is different from the previous LMA address, the MN will be assigned HNP1 different from the previous HNP, so that the MN will configure a new ΗοΑ1 according to the new HNP1. The CN that communicates with the MN in the PMIPv6 domain still uses the previous HoA of the MN as the destination address to send the message to the MN. However, the home address of the MN has changed to ΗοΑΙ, so the message sent by the CN will be lost, causing the session to be interrupted. . Conversely, similar problems occur when the MN moves from the MIPv6 domain to the PMIPv6 domain.
综上所述, 当 MN在 PMIPv6域与 MIPv6域间切换时, 由于 LM A地址/ H A地址的不同, 会 导致会话的中断。 发明内容 In summary, when the MN switches between the PMIPv6 domain and the MIPv6 domain, the session is interrupted due to the difference in the LM A address/H A address. Summary of the invention
为了使移动节点在不同域间切换时保持与通信节点的会话不中断, 本发明实施例提供 了一种在不同域间切换时保持会话连续的方法、 系统及节点。 所述技术方案如下: In order to keep the session with the communication node uninterrupted when the mobile node switches between different domains, embodiments of the present invention provide a method, system, and node for maintaining a continuous session when switching between different domains. The technical solution is as follows:
一种在不同域间切换时保持会话连续的方法, 所述方法包括: A method for maintaining a session continuity when switching between different domains, the method comprising:
移动节点在第一移动域建立与通信节点的会话连接; The mobile node establishes a session connection with the communication node in the first mobility domain;
所述移动节点从第一移动域切换到第二移动域时, 利用切换前在第一移动域存储的锚 点设备地址信息实现与所述通信节点的会话。 When the mobile node switches from the first mobile domain to the second mobile domain, the session with the communication node is implemented by using the anchor device address information stored in the first mobile domain before the handover.
一种移动节点, 所述移动节点包括: A mobile node, the mobile node comprising:
获取模块, 用于当所述移动节点从第一移动域切换到第二移动域时, 获取切换前在第 一移动域保存的锚点设备地址信息; And an obtaining module, configured to acquire, when the mobile node switches from the first mobile domain to the second mobile domain, the anchor device address information saved in the first mobile domain before the handover;
会话模块, 用于利用所述锚点设备地址信息在第二移动域实现与所述通信节点的会话。 一种保持会话连续的系统, 所述系统包括: a session module, configured to implement a session with the communication node in the second mobility domain by using the anchor device address information. A system for maintaining a continuous session, the system comprising:
移动节点和信息存储装置; Mobile node and information storage device;
所述信息存储装置保存所述移动节点从第一移动域向第二移动域切换前的锚点设备地 址信息; The information storage device stores anchor device address information before the mobile node switches from the first mobile domain to the second mobile domain;
所述移动节点从第一移动域切换到第二移动域时, 利用所述信息存储装置保存的锚点 设备地址信息实现与通信节点的会话。 When the mobile node switches from the first mobile domain to the second mobile domain, the session with the communication node is implemented by using the anchor device address information saved by the information storage device.
本发明实施例所述技术方案当移动节点在第一移动域和第二移动域进行切换时, 移动
节点利用切换前保存的在第一移动域的锚点设备地址信息与通信节点进行会话, 能够保证 移动节点在不同域间切换时保持与通信节点的会话连续不中断。 附图说明 The technical solution of the embodiment of the present invention moves when the mobile node performs handover in the first mobile domain and the second mobility domain. The node uses the anchor device address information stored in the first mobile domain before the handover to conduct a session with the communication node, and can ensure that the mobile node maintains the session with the communication node continuously without interruption when switching between different domains. DRAWINGS
图 1是本发明实施例 1提供的一种当 MN从 PMIPv6域切换到 MIPv6域时保持移动节 点在不同域间切换时会话连续的方法的示意图; 1 is a schematic diagram of a method for maintaining a continuous session when a mobile node switches between different domains when the MN switches from the PMIPv6 domain to the MIPv6 domain according to Embodiment 1 of the present invention;
图 2是本发明实施例 1提供的一种当 MN从 MIPv6域切换到 PMIPv6域时保持移动节 点在不同域间切换时会话连续的方法的示意图; 2 is a schematic diagram of a method for maintaining a continuous session when a mobile node switches between different domains when the MN switches from the MIPv6 domain to the PMIPv6 domain according to Embodiment 1 of the present invention;
图 3是本发明实施例 2提供的另一种当 MN从 PMIPv6域切换到 MIPv6域时保持移动 节点在不同域间切换时会话连续的方法的示意图; FIG. 3 is a schematic diagram of another method for maintaining a continuous session when a mobile node switches between different domains when the MN switches from a PMIPv6 domain to a MIPv6 domain according to Embodiment 2 of the present invention; FIG.
图 4是是本发明实施例 2提供的另一种当 MN从 MIPv6域切换到 PMIPv6域时保持移 动节点在不同域间切换时会话连续的方法的示意图; 4 is a schematic diagram of another method for maintaining a continuous session when a mobile node switches between different domains when the MN switches from the MIPv6 domain to the PMIPv6 domain according to Embodiment 2 of the present invention;
图 5是本发明实施例 3提供的另一种当 MN从 PMIPv6域切换到 MIPv6域时保持移动 节点在不同域间切换时会话连续的方法的示意图; 5 is a schematic diagram of another method for maintaining a continuous session of a mobile node when switching between different domains when the MN switches from the PMIPv6 domain to the MIPv6 domain according to Embodiment 3 of the present invention;
图 6是本发明实施例 4提供的移动节点的结构示意图; 6 is a schematic structural diagram of a mobile node according to Embodiment 4 of the present invention;
图 7是本发明实施例 4提供的保持会话连续的系统的结构示意图。 FIG. 7 is a schematic structural diagram of a system for maintaining a continuous session according to Embodiment 4 of the present invention.
具体实施方式 detailed description
为使本发明的目的、 技术方案和优点更加清楚, 下面将结合附图对本发明实施方式作 进一步地详细描述。 The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.
实施例 1 Example 1
本发明实施例提供了一种保持移动节点在不同域间切换时会话连续的方法, 该方法通 过认证、 授权和计费 (Authentication Authorization and Accounting, AAA)服务器保存锚点设 备地址信息, 当 MN在 PMIPv6域和 MIPv6域间进行切换时, MN利用切换前 AAA服务器 保存的锚点设备地址信息与通信节点进行会话, 从而能够保证 MN和 CN之间正常会话连 续不会中断。 其中, 锚点设备在 PMIPv6域具体指 LMA, 在 MIPv6域具体指 HA, 其中, AAA服务器可以称为信息存储装置。 下面分别针对 MN从 PMIPv6域切换到 MIPv6域和 MN从 MIPv6域切换到 PMIPv6域这两种应用场景进行详细描述。 An embodiment of the present invention provides a method for maintaining a continuous session when a mobile node switches between different domains. The method saves an anchor device address information by using an Authentication, Authorization, and Accounting (AAA) server. When switching between the PMIPv6 domain and the MIPv6 domain, the MN performs a session with the communication node by using the anchor device address information saved by the AAA server before the handover, so that the normal session between the MN and the CN can be continuously interrupted. The anchor device refers to the LMA in the PMIPv6 domain and the HA in the MIPv6 domain. The AAA server can be called an information storage device. The following describes the application scenarios in which the MN switches from the PMIPv6 domain to the MIPv6 domain and the MN switches from the MIPv6 domain to the PMIPv6 domain.
如图 1所示, 针对 MN从 PMIPv6域移动至 MIPv6域的应用场景, 本实施例的具体如 下:
101: MN连接至 PMIPv6域的某一接入链路, 在该接入链路上的 MAG获得 MN的标 识, 并向 LMA发送 PBU消息, 该 PBU消息中包含 MAG地址、 MN的标识等 MN相关信 息。 As shown in FIG. 1 , the application scenario of the MN moving from the PMIPv6 domain to the MIPv6 domain is as follows: 101: The MN is connected to an access link of the PMIPv6 domain, and the MAG on the access link obtains the identifier of the MN, and sends a PBU message to the LMA, where the PBU message includes the MN related to the MAG address, the identifier of the MN, and the like. information.
102: LMA接收 PBU消息, 为 MN分配唯一的 HNP, 并向 AAA服务器发送接入请求 ( access request) 消息, 请求验证 MAG是否合法授权, 该接入请求消息包含 MAG地址、 LMA地址、 MN的 HNP、 MN标识等 MN相关信息。 102: The LMA receives the PBU message, allocates a unique HNP to the MN, and sends an access request message to the AAA server, requesting to verify whether the MAG is legally authorized, and the access request message includes the MAG address, the LMA address, and the HNP of the MN. , MN identification and other MN related information.
需要说明的是, 上述信息的承载方式依赖于接入请求消息的具体形式, 如可以通过定 义 AAA消息中的 AVP ( Attribute Value Pair, 属性值对) 属性来实现。 It should be noted that the bearer mode of the foregoing information depends on the specific form of the access request message, for example, by defining an AVP (Attribute Value Pair) attribute in the AAA message.
103: AAA服务器接收接入请求消息,验证 MAG是否合法授权,如果 MAG合法授权, 则向 LMA返回接入响应 (access reply) 消息, 并保存接入请求消息中的 MAG地址、 LMA 地址、 MN的 HNP、 MN标识等 MN相关信息。 103: The AAA server receives the access request message, and verifies whether the MAG is legally authorized. If the MAG is legally authorized, the device returns an access reply message to the LMA, and saves the MAG address, the LMA address, and the MN in the access request message. MN related information such as HNP and MN identity.
其中, 接入响应消息包含验证 MAG合法授权的信息。 The access response message includes information for verifying the legal authorization of the MAG.
104: LMA接收接入响应消息, 根据接入响应消息中的验证 MAG合法授权的信息向 MAG发送代理绑定确认 (Proxy Banding Acknoledgement, PBA) 消息。 104: The LMA receives the access response message, and sends a Proxy Banding Acknowledgement (PBA) message to the MAG according to the information in the access response message that is verified by the MAG legal authorization.
105: 当 MN从 PMIPv6域切换到 MIPv6域时, MIPv6域的接入路由器 (Access Router, 105: When the MN switches from the PMIPv6 domain to the MIPv6 domain, the access router of the MIPv6 domain (Access Router,
AR) 通过与 AAA服务器之间交互完成对 MN的接入认证, 在 MN的接入认证过程中, AR从 AAA服务器获得 MN在 PMIPv6域的 LMA地址信息和其它 MN相关信息。 AR) The access authentication of the MN is completed through interaction with the AAA server. In the access authentication process of the MN, the AR obtains the LMA address information of the MN in the PMIPv6 domain and other MN related information from the AAA server.
具体的, AR向 AAA服务器发送 AAA请求消息, 请求获取 MN相关信息。 Specifically, the AR sends an AAA request message to the AAA server, requesting to obtain the MN related information.
AAA服务器接收 AAA请求消息, 将 MN在 PMIPv6域的 LMA地址信息等 MN相关信息携 带在 AAA应答消息中发送给 AR的。 The AAA server receives the AAA request message, and sends the MN related information such as the LMA address information of the MN in the PMIPv6 domain to the AR in the AAA response message.
AR从接收的 AAA应答消息中获取 MN在 PMIPv6域的 LMA地址信息等 MN相关信息, 并 向 MN发送 RA消息, 该 RA消息中包含外地链路前缀信息。 The AR obtains the MN related information, such as the LMA address information of the MN in the PMIPv6 domain, from the received AAA response message, and sends an RA message to the MN, where the RA message includes the foreign link prefix information.
106: MN根据 RA消息中的外地链路前缀信息配置 CoA, 并向 AR发送动态主机配置 协议 (Dynamic Host Configuration Protocol, DHCP ) Request (请求) 消息, 请求获得 MN 的相关信息, 包括获取 LMA地址, HNP等信息。 106: The MN configures the CoA according to the foreign link prefix information in the RA message, and sends a Dynamic Host Configuration Protocol (DHCP) Request message to the AR, requesting to obtain related information of the MN, including obtaining the LMA address. HNP and other information.
107: AR接收 DHCP Request消息后,如果 AR为 DHCP relay (中继),则在 DHCP Request 消息中增加 relay (中继) 选项, 该 relay选项携带从 AAA服务器获得的 LMA地址信息, 并将携带 LMA地址信息的 DHCP Request消息发送给 DHCP server, 然后执行 108-110; 如 果 AR为 DHCP proxy (代理), 则直接向 MN返回 DHCP reply消息, 该 DHCP reply消息中 携带从 AAA服务器获得的 MN在 PMIPv6域的 LMA地址信息, MN利用从 DHCP reply消 息中获取的 LMA地址信息与 CN进行会话。
108: DHCP server接收到 DHCP Request消息后,返回 DHCP reply消息至 AR,该 DHCP reply消息携带从 AR得到的 MN在 PMIPv6域的 LMA地址信息。 107: After receiving the DHCP Request message, the AR adds a relay option to the DHCP Request message if the AR is a DHCP relay. The relay option carries the LMA address information obtained from the AAA server and carries the LMA. The DHCP Request message of the address information is sent to the DHCP server, and then the 108-110 is executed; if the AR is a DHCP proxy, the DHCP reply message is directly returned to the MN, and the DHCP reply message carries the MN obtained from the AAA server in the PMIPv6 domain. The LMA address information, the MN uses the LMA address information obtained from the DHCP reply message to conduct a session with the CN. 108: After receiving the DHCP Request message, the DHCP server returns a DHCP reply message to the AR, where the DHCP reply message carries the LMA address information of the MN in the PMIPv6 domain obtained from the AR.
109: AR中继 DHCP Reply消息至 MN。 109: The AR relays a DHCP Reply message to the MN.
110: MN接收 DHCP Reply消息, 获得其在 PMIPv6域中的 LMA地址信息, 利用获得 的 LMA地址信息建立与 LMA之间的隧道, 通过该隧道实现与 CN的会话。 The MN receives the DHCP Reply message, obtains the LMA address information in the PMIPv6 domain, and establishes a tunnel with the LMA by using the obtained LMA address information, and implements a session with the CN through the tunnel.
需要说明的是, 在 MIPv6域中, MN获取到 LMA的地址信息后, 会认为该地址为家乡 代理的地址, 于是利用该地址建立与 LMA之间的隧道。 It should be noted that, in the MIPv6 domain, after the MN obtains the address information of the LMA, the MN considers the address as the address of the home agent, and uses the address to establish a tunnel with the LMA.
如图 2所示, 针对 MN从 MIPv6域移动至 PMIPv6域的应用场景, 本实施例的具体如 下: As shown in FIG. 2, the application scenario of the MN moving from the MIPv6 domain to the PMIPv6 domain is as follows:
201: MN完成在 MIPv6域的接入认证, 通过相关途径在自举过程中获取 HA地址。 201: The MN completes the access authentication in the MIPv6 domain, and obtains the HA address in the bootstrap process through related channels.
MN在自举过程中获取 HA地址是现有技术, 不再赘述。 The MN obtains the HA address in the bootstrap process is a prior art and will not be described again.
202: MN向 HA发送 BU消息, 该 BU消息中包含 MN的 CoA、 Ho A和 MN的标识等 信息 202: The MN sends a BU message to the HA, where the BU message includes information such as the MN's CoA, Ho A, and MN identity.
203: HA接收到 BU消息, 为 MN分配唯一的一个 HNP, 并向 AAA服务器发送接入请求 消息, 该接入请求消息中包含 HA地址、 MN的标识等 MN相关信息。 203: The HA receives the BU message, allocates a unique HNP to the MN, and sends an access request message to the AAA server, where the access request message includes the MN related information such as the HA address and the identifier of the MN.
204: AAA服务器接收接入请求消息, 向 HA返回接入响应消息, 并保存接入请求消息 中的 HA地址以及其它 MN的相关信息。 204: The AAA server receives the access request message, returns an access response message to the HA, and saves the HA address in the access request message and related information of other MNs.
205: HA接收接入响应消息, 向 MN发送绑定确认 (Bangding Acknowledgement, BA) 消息。 205: The HA receives the access response message, and sends a Binding Acknowledgement (BA) message to the MN.
206:当 MN从 MIPv6域切换到 PMIPv6域时, MAG在 MN接入认证过程中获得 MN的标识, 并向 AAA服务器发送 AAA请求消息, 请求获取 MN在 MIPv6域的 HA地址信息。 206: When the MN is switched from the MIPv6 domain to the PMIPv6 domain, the MAG obtains the identity of the MN in the MN access authentication process, and sends an AAA request message to the AAA server to obtain the HA address information of the MN in the MIPv6 domain.
207: AAA服务器接收 AAA请求消息, 并将 MN在 MIPv6域的 HA地址信息携带在 AAA 应答消息中发送给 MAG。 207: The AAA server receives the AAA request message, and sends the HA address information of the MN in the MIPv6 domain to the MAG in the AAA response message.
208: MAG接收 AAA应答消息, 获取 MN在 MIPv6域的 HA地址信息, 并利用获取的 HA 地址信息与 HA之间建立隧道。 208: The MAG receives the AAA response message, obtains the HA address information of the MN in the MIPv6 domain, and establishes a tunnel between the obtained HA address information and the HA.
需要说明的是, 在 PMIPv6域中, MAG获取到 HA的地址信息后, 会认为该地址为本地 移动锚点的地址, 于是利用该地址建立与 LMA之间的隧道。 It should be noted that, in the PMIPv6 domain, after the MAG obtains the address information of the HA, the MAG considers the address as the address of the local mobility anchor, and uses the address to establish a tunnel with the LMA.
209: MN利用 MAG和 HA之间建立的隧道与 CN进行会话。 209: The MN uses the tunnel established between the MAG and the HA to conduct a session with the CN.
在本发明实施例中, 通过 AAA服务器来保存锚点设备地址信息, 当 MN在 PMIPv6域和 MIPv6域间进行切换时, MN利用切换前 AAA服务器上保存的锚点设备地址信息与 CN进行 会话, 从而能够保证 MN和 CN之间会话连续不中断。
实施例 2 In the embodiment of the present invention, the anchor device address information is saved by the AAA server. When the MN switches between the PMIPv6 domain and the MIPv6 domain, the MN performs a session with the CN by using the anchor device address information saved on the AAA server before the handover. Thereby, it is possible to ensure that the session between the MN and the CN is continuously uninterrupted. Example 2
与实施例 1 不同的是, 本实施例中是用其他信息存储装置保存錨点设备地址信息, 当 MN在 PMIPv6域与 MIPv6域间切换时, MN利用信息存储装置保存的锚点设备地址信息与 CN进行会话。在本实施例中其他信息存储装置以域名服务器(Domain Name Server, DNS) 为例, 但实际应用中并不限于 DNS。 其中, 锚点设备在 PMIPv6域具体指 LMA, 在 MIPv6 域具体指 HA。 下面分别针对 MN从 PMIPv6域切换到 MIPv6域和 MN从 MIPv6域切换到 ΡΜΙΡνό域这两种应用场景进行详细描述。 Different from the embodiment 1, in this embodiment, the anchor device address information is saved by using another information storage device. When the MN switches between the PMIPv6 domain and the MIPv6 domain, the MN uses the anchor device address information saved by the information storage device. CN conducts a conversation. In this embodiment, other information storage devices use a domain name server (DNS) as an example, but the actual application is not limited to DNS. The anchor device refers to the LMA in the PMIPv6 domain and the HA in the MIPv6 domain. The following describes the application scenarios in which the MN switches from the PMIPv6 domain to the MIPv6 domain and the MN switches from the MIPv6 domain to the ΡΜΙΡνό domain.
如图 3所示, 针对 ΜΝ从 PMIPv6域移动至 MIPv6域的应用场景, 本实施例的具体如 下: As shown in FIG. 3, the application scenario of the method for moving from the PMIPv6 domain to the MIPv6 domain is as follows:
301: MN在 PMIPv6域完成接入认证。 301: The MN completes access authentication in the PMIPv6 domain.
302: MAG发送 PBU消息至 LMA, 请求为 MN进行注册。 302: The MAG sends a PBU message to the LMA, requesting registration for the MN.
303: LMA收到 PBU消息, 如果 MN注册成功, 则向 DNS发送 DNS更新请求消息, 该 DNS更新请求消息中携带 MN的 LMA地址、 家乡网络前缀、 MN的标识、 多接口信息 等 MN相关信息。 303: The LMA receives the PBU message, and if the MN is successfully registered, sends a DNS update request message to the DNS, where the DNS update request message carries the MN related information such as the LMA address of the MN, the home network prefix, the MN identity, and the multi-interface information.
具体的更新请求消息依赖于具体的信息存储网元的选择,由于在本实施例中是采用 DNS 作为信息存储装置, 那么更新请求消息的格式符合 DNS消息格式的标准。 The specific update request message depends on the selection of the specific information storage network element. Since the DNS is used as the information storage device in this embodiment, the format of the update request message conforms to the standard of the DNS message format.
304: DNS接收 DNS更新请求消息, 保存 DNS更新请求消息中 MN的 LMA地址、 家 乡网络前缀、 MN的标识、 多接口信息等 MN相关信息, 并向 LMA返回更新响应消息。 304: The DNS receives the DNS update request message, and saves the MN related information such as the LMA address, the home network prefix, the MN identity, and the multi-interface information in the DNS update request message, and returns an update response message to the LMA.
305: LMA接收更新响应消息后, 向 MAG发送 PBA消息。 305: After receiving the update response message, the LMA sends a PBA message to the MAG.
306: 当 MN从 PMIPv6域切换到 MIPv6域时, 向 DNS发送 DNS请求消息, 请求 MN 的相关信息。 306: When the MN switches from the PMIPv6 domain to the MIPv6 domain, send a DNS request message to the DNS to request information about the MN.
307: DNS接收 DNS请求消息, 将自身存储的 MN在 PMIPv6域的 LMA地址信息携带 在 DNS响应消息中发送给 MN。 307: The DNS receives the DNS request message, and sends the LMA address information of the MN stored in the PMIPv6 domain to the MN.
308: MN接收 DNS响应消息, 获取 MN在 PMIPv6域的 LMA地址信息, 并利用获取 的 LMA地址信息建立与 LMA之间的隧道, 通过所述隧道实现与 CN的会话。 308: The MN receives the DNS response message, obtains the LMA address information of the MN in the PMIPv6 domain, and establishes a tunnel with the LMA by using the obtained LMA address information, and implements a session with the CN through the tunnel.
需要说明的是, 在 MIPv6域中, MN获取到 LMA的地址信息后, 会认为该地址为家乡 代理的地址, 于是利用该地址建立与 LMA之间的隧道。 如图 4所示, 针对 MN从 MIPv6域域移动至 PMHV6的应用场景, 本实施例的具体如 下: It should be noted that, in the MIPv6 domain, after the MN obtains the address information of the LMA, the MN considers the address as the address of the home agent, and uses the address to establish a tunnel with the LMA. As shown in FIG. 4, the application scenario of the MN moving from the MIPv6 domain to the PMHV6 is as follows:
401: MN完成在 MIPv6域的接入认证。
402: MN向 HA发送 BU消息, 请求进行注册。 401: The MN completes the access authentication in the MIPv6 domain. 402: The MN sends a BU message to the HA requesting registration.
403: HA在收到 BU消息后,如果为 MN注册成功,则向 MN发送 BA消息,并向 DNS 发送 DNS更新请求消息, 该 DNS更新请求消息中携带 MN的 HA地址、 家乡网络前缀、 MN的标识、 多接口信息等 MN相关信息。 403: After receiving the BU message, the HA sends a BA message to the MN if the MN is successfully registered, and sends a DNS update request message to the DNS, where the DNS update request message carries the HA address of the MN, the home network prefix, and the MN. MN related information such as identification and multi-interface information.
具体内容与上述 303类似, 不再赘述。 The specific content is similar to the above 303, and will not be described again.
404: DNS接收该 DNS更新请求消息, 保存该 DNS更新请求消息中 MN的 HA地址、 家乡网络前缀、 MN的标识、 多接口信息等 MN相关信息, 并向 HA返回 DNS更新响应消 息, 告知更新成功。 404: The DNS receives the DNS update request message, saves the MN related information such as the HA address, the home network prefix, the MN identifier, and the multi-interface information of the MN in the DNS update request message, and returns a DNS update response message to the HA, indicating that the update is successful. .
405: HA接收 DNS更新响应消息, 向 MN发送 BA消息。 405: The HA receives the DNS update response message and sends a BA message to the MN.
406: 当 MN从 MIPv6域切换到 PMIPv6域时, 向 MAG发起接入认证请求, 该接入认 证请求包含 MN的标识等 MN相关信息。 406: When the MN switches from the MIPv6 domain to the PMIPv6 domain, initiate an access authentication request to the MAG, where the access authentication request includes the MN related information such as the identifier of the MN.
407: MAG在获得 MN的标识后向 DNS发送 DNS请求消息, 请求获取 MN相关信息。 407: After obtaining the identifier of the MN, the MAG sends a DNS request message to the DNS, requesting to obtain information about the MN.
408: DNS接收 DNS请求消息, 将 MN在 MIPv6域的 HA地址信息携带在 DNS响应 消息中发送给 MAG。 408: The DNS receives the DNS request message, and sends the HA address information of the MN in the MIPv6 domain to the MAG in the DNS response message.
409: MAG接收 DNS响应消息, 获取 MN在 MIPv6域的 HA地址信息, 并利用获取的 409: The MAG receives the DNS response message, obtains the HA address information of the MN in the MIPv6 domain, and uses the obtained
HA地址信息同 HA之间建立隧道。 A tunnel is established between the HA address information and the HA.
需要说明的是, 在 PMIPv6域中, MAG获取到 HA的地址信息后, 会认为该地址为本地 移动锚点的地址, 于是利用该地址建立与 LMA之间的隧道。 It should be noted that, in the PMIPv6 domain, after the MAG obtains the address information of the HA, the MAG considers the address as the address of the local mobility anchor, and uses the address to establish a tunnel with the LMA.
410: MN利用 MAG与 HA之间建立的隧道同 CN进行会话。 410: The MN uses the tunnel established between the MAG and the HA to talk to the CN.
在本发明实施例中, 通过域名服务器 DNS来保存锚点设备地址信息, 当 MN在 PMIPv6 域和 MIPv6域间进行切换时, MN利用切换前域名服务器 DNS上保存錨点设备地址信息与 CN 进行会话, 从而能够保证 MN和 CN之间会话连续不中断。 In the embodiment of the present invention, the anchor device address information is saved by the domain name server DNS. When the MN switches between the PMIPv6 domain and the MIPv6 domain, the MN uses the pre-switch domain name server DNS to save the anchor device address information to perform a session with the CN. Thus, it can be ensured that the session between the MN and the CN is continuously uninterrupted.
实施例 3 Example 3
与实施例 1不同的是, 本实施例是通过 MAG保存 MN在 PMIPv6域的 LMA地址信息, 当 MN从 PMIPv6域移动到 MIPv6域时, AR从 MAG获取并保存 MN在 PMIPv6域的 LMA地址信 息, 并将 MN在 PMIPv6域的 LMA地址信息提供给 MAG, MAG利用该 LMA地址信息与 HA建 立隧道, MN利用 MAG与 HA之间的隧道与 CN进行会话, 从而能够保证 MN和 CN之间会话连 续不中断, 其中, MAG可以称为其他信息存储装置。 如图 5所示, 本实施例的具体如下: 501: MN在 PMIPv6域时, MAG通过相关途径获取并保存 LMA地址。 Different from the first embodiment, in this embodiment, the MMA stores the LMA address information of the MN in the PMIPv6 domain by using the MAG. When the MN moves from the PMIPv6 domain to the MIPv6 domain, the AR obtains and saves the LMA address information of the MN in the PMIPv6 domain from the MAG. And providing the MMA address information of the MN in the PMIPv6 domain to the MAG, the MAG uses the LMA address information to establish a tunnel with the HA, and the MN uses the tunnel between the MAG and the HA to conduct a session with the CN, thereby ensuring that the session between the MN and the CN is continuous. Interrupt, where the MAG can be referred to as other information storage devices. As shown in FIG. 5, the details of this embodiment are as follows: 501: When the MN is in the PMIPv6 domain, the MAG obtains and saves the LMA address through the related path.
MAG通过相关途径获取 LMA地址的过程是现有技术不再赘述。 The process of obtaining the LMA address by the MAG through related channels is not described in the prior art.
502: 当 MN从 PMIPv6域切换至 MIPv6域时, AR与 PMIPv6域中的 MAG间通过上下文请
求 /响应消息获取并保存 LMA地址和其它 MN相关信息。 502: When the MN switches from the PMIPv6 domain to the MIPv6 domain, the context between the AR and the MAG in the PMIPv6 domain is requested. The seek/response message acquires and saves the LMA address and other MN related information.
具体的, AR获得 LMA地址和其它 MN相关信息的方法主要有: Specifically, the methods for the AR to obtain the LMA address and other MN related information are as follows:
第一、 AR向 MAG发送上下文请求消息, 请求获取 LMA地址信息和其它 MN相关信息; MAG接收上下文请求消息后, 将 LMA地址和其它 MN相关信息携带上下文响应消息中发送 给 AR; AR接收上下文响应消息, 并保存上下文响应消息中的 LMA地址信息和其它 MN相关 信息。 First, the AR sends a context request message to the MAG, requesting to acquire the LMA address information and other MN related information. After receiving the context request message, the MAG sends the LMA address and other MN related information carrying the context response message to the AR. The AR receives the context response. The message, and save the LMA address information and other MN related information in the context response message.
第二、 MAG直接将 LMA地址信息和其它 MN相关信息通过携带在上下文传输消息告知 AR; AR获取并保存 LMA地址和其它 MN相关信息。 Second, the MAG directly informs the AR by transmitting the LMA address information and other MN related information by carrying the message in the context; the AR acquires and saves the LMA address and other MN related information.
503: MN在 MIPv6域完成接入认证。 503: The MN completes access authentication in the MIPv6 domain.
504: MN在接入链路上获得 MIPv6域的 CoA, 并向 AR发送 DHCP Request消息, 请求获 取 MN相关信息, 包括 LMA地址、 HNP等相关信息。 504: The MN obtains the CoA of the MIPv6 domain on the access link, and sends a DHCP Request message to the AR, requesting to obtain the MN related information, including the LMA address, HNP, and the like.
505: AR接收 DHCP Request消息后,如果 AR为 DHCP relay(中继),则在 DHCP Request 消息中增加 relay (中继)选项, 该 relay选项携带获得的 LMA地址信息, 并将该携带 LMA 地址信息的 DHCP Request消息发送给 DHCP server, 并执行 506-508; 如果 AR为 DHCP proxy (代理), 则直接向 MN返回 DHCP reply消息, 该 DHCP reply消息中携带 LMA地址信 息, MN获取在 PMIPv6域中的 LMA地址信息, 并利用获取的 LMA地址信息同 CN进行 会话。 505: After receiving the DHCP Request message, the AR adds a relay option to the DHCP Request message if the AR is a DHCP relay. The relay option carries the obtained LMA address information and carries the LMA address information. The DHCP Request message is sent to the DHCP server, and 506-508 is performed; if the AR is a DHCP proxy, the DHCP reply message is directly sent to the MN, where the DHCP reply message carries the LMA address information, and the MN obtains the PMIPv6 domain. LMA address information, and use the acquired LMA address information to talk with the CN.
506: DHCP server接收到 DHCP Request消息后,返回 DHCP reply消息至 AR,该 DHCP reply携带从 AR得到的 LMA地址信息。 506: After receiving the DHCP Request message, the DHCP server returns a DHCP reply message to the AR, where the DHCP reply carries the LMA address information obtained from the AR.
507: AR中继 DHCP Reply消息至 MN。 507: The AR relays a DHCP Reply message to the MN.
508: MN接收 DHCP Reply消息, 获取其在 PMIPv6域时的 LMA地址信息, 并利用获 取的 LMA地址信息建立与 LMA之间的隧道, 通过该隧道与 CN进行正常会话。 508: The MN receives the DHCP Reply message, obtains the LMA address information of the PMIPv6 domain, and establishes a tunnel with the LMA by using the obtained LMA address information, and performs a normal session with the CN through the tunnel.
需要说明的是, 在 MIPv6域中, MN获取到 LMA的地址信息后, 会认为该地址为家乡 代理的地址, 于是利用该地址建立与 LMA之间的隧道。 It should be noted that, in the MIPv6 domain, after the MN obtains the address information of the LMA, the MN considers the address as the address of the home agent, and uses the address to establish a tunnel with the LMA.
在本发明实施例中, 通过 PMIPv6域的 MAG保存 MN在 PMIPv6域的 LMA地址信息, 当 In the embodiment of the present invention, the MAG of the PMIPv6 domain saves the LMA address information of the MN in the PMIPv6 domain, when
MN从 PMIPv6域切换到 MIPv6域时, MIPv6域的 AR从 MAG获取并保存 MN在 PMIPv6域的 LMA地址信息, 并将 MN在 PMIPv6域的 LMA地址信息提供给 MN, MN利用该 LMA地址信息 与 HA ( SPPMIPv6域的 LMA) 建立隧道, MN利用该隧道与 CN进行会话, 从而能够保证 MN 和 CN之间会话连续不中断。 When the MN switches from the PMIPv6 domain to the MIPv6 domain, the AR of the MIPv6 domain obtains and saves the LMA address information of the MN in the PMIPv6 domain from the MAG, and provides the LM address information of the MN in the PMIPv6 domain to the MN, and the MN uses the LMA address information and the HA. (LMA of the SPPMIPv6 domain) Establishes a tunnel, and the MN uses the tunnel to conduct a session with the CN, thereby ensuring continuous uninterrupted sessions between the MN and the CN.
实施例 4 Example 4
本发明实施例提供了一种移动节点, 该移动节点具体的功能描述如下: 移动节点在第
一移动域建立与通信节点的会话连接。 The embodiment of the invention provides a mobile node, and the specific function description of the mobile node is as follows: A mobile domain establishes a session connection with a communication node.
当移动节点从从第一移动域切换到第二移动域时, 利用切换前在第一移动域保存的锚 点设备地址信息实现与通信节点的会话。 When the mobile node switches from the first mobile domain to the second mobile domain, the session with the communication node is implemented using the anchor device address information saved in the first mobile domain before the handover.
其中, 利用切换前在第一移动域保存的锚点设备地址信息实现与通信节点的会话的情 况可以分为两种: Wherein, the situation of implementing the session with the communication node by using the anchor device address information saved in the first mobile domain before the handover can be divided into two types:
第一、 移动节点利用所述锚点设备地址信息与锚点设备建立隧道, 并利用该隧道在第 二移动域实现与通信节点的会话。 First, the mobile node establishes a tunnel with the anchor device by using the anchor device address information, and uses the tunnel to implement a session with the communication node in the second mobile domain.
第二、 移动节点利用移动接入网关 MAG与锚点设备之间建立的隧道在第二移动域实 现与通信节点的会话,该隧道由移动接入网关 MAG利用从第一移动域保存的锚点设备地址 信息在锚点设备之间建立。 Second, the mobile node implements a session with the communication node in the second mobile domain by using a tunnel established between the mobile access gateway MAG and the anchor device, and the tunnel uses the anchor point saved from the first mobile domain by the mobile access gateway MAG. Device address information is established between anchor devices.
需要说明的是, 第一移动域为 PMIPv6域, 第二移动域为 MIPv6域; 或第一移动域为 MIPv6域, 第二移动域为 PMIPv6域。 It should be noted that the first mobility domain is a PMIPv6 domain, and the second mobility domain is a MIPv6 domain; or the first mobility domain is a MIPv6 domain, and the second mobility domain is a PMIPv6 domain.
如图 6所示, 一种典型的移动节点包括: As shown in Figure 6, a typical mobile node includes:
获取模块 601, 用于当移动节点从第一移动域切换到第二移动域时, 获取切换前在第一 移动域保存的锚点设备地址信息; 其中, 如何获取切换前在第一移动域保存的锚点设备地 址信息, 可以参见方法实施例的相应描述, 在此不再赘述。 The obtaining module 601 is configured to: when the mobile node switches from the first mobile domain to the second mobile domain, obtain the anchor device address information saved in the first mobile domain before the handover; where, how to obtain the first mobile domain before saving For the anchor device address information, refer to the corresponding description of the method embodiment, and details are not described herein again.
会话模块 602, 用于利用获取的锚点设备地址信息与锚点设备之间建立隧道, 并利用建 立的隧道在第二移动域实现与通信节点的会话。 The session module 602 is configured to establish a tunnel with the anchor device by using the obtained anchor device address information, and implement a session with the communication node in the second mobility domain by using the established tunnel.
其中, 利用获取的锚点设备地址信息与锚点设备之间建立隧道, 并利用建立的隧道在 第二移动域实现与通信节点的会话的过程可以参见方法实施例的相应描述, 在此不再赘述。 For the process of establishing a tunnel between the obtained anchor device address information and the anchor device, and implementing the session with the communication node in the second mobile domain by using the established tunnel, refer to the corresponding description of the method embodiment, and no longer Narration.
其中, 会话模块 602包括: The session module 602 includes:
隧道建立子模块 6021, 用于利用锚点设备地址信息与锚点设备建立隧道; a tunnel establishment sub-module 6021, configured to establish a tunnel with the anchor device by using the anchor device address information;
会话子模块 6022, 用于利用建立的隧道在第二移动域实现与通信节点的会话。 The session sub-module 6022 is configured to implement a session with the communication node in the second mobility domain by using the established tunnel.
在本发明实施例中, 在移动节点从第一移动域切换到第二移动域时, 移动节点利用切 换前保存的锚点设备地址信息与通信节点进行会话, 能够保证移动节点在不同域间切换时 保持与通信节点的会话连续不中断。 本发明实施例提供了一种保持会话连续的系统, 如图 7所示, 该系统包括: In the embodiment of the present invention, when the mobile node switches from the first mobile domain to the second mobile domain, the mobile node performs a session with the communication node by using the anchor device address information saved before the handover, and can ensure that the mobile node switches between different domains. The session with the communication node is kept uninterrupted. An embodiment of the present invention provides a system for maintaining a continuous session. As shown in FIG. 7, the system includes:
移动节点 701和信息存储装置 702; Mobile node 701 and information storage device 702;
信息存储装置 702,用于保存移动节点 701从第一移动域向第二移动域切换前的锚点设 备地址信息;
移动节点 701, 用于从第一移动域切换到第二移动域时, 利用切换前在第一移动域的信 息信息存储装置 702上保存的锚点设备地址信息, 在第二移动域实现与通信节点的会话。 The information storage device 702 is configured to save anchor device address information before the mobile node 701 switches from the first mobile domain to the second mobile domain; The mobile node 701 is configured to implement, in the second mobile domain, the anchor device address information saved on the information information storage device 702 of the first mobile domain before the handover, when the mobile node is switched from the first mobile domain to the second mobile domain. The session of the node.
其中,信息存储装置 702为 AAA服务器或移动接入网关 MAG,该 AAA服务器或移动 接入网关 MAG保存移动节点 701从作为第一移动域的 PMIPv6域向第二移动域的 MIPv6 域切换前的锚点设备地址信息; 相应地, 移动节点 701, 具体用于从作为第一移动域的 ΡΜΙΡνό域切换到作为第二移动域的 ΜΙΡν6域时, 通过 MIPv6域的接入路由器 AR获得切 换前在 PMIPv6域的 AAA服务器或移动接入网关 MAG上保存的锚点设备地址信息, 利用 锚点设备地址信息与锚点设备建立隧道,并利用该隧道在 MIPv6域实现与通信节点的会话。 The information storage device 702 is an AAA server or a mobile access gateway MAG, and the AAA server or the mobile access gateway MAG saves the anchor before the mobile node 701 switches from the PMIPv6 domain as the first mobile domain to the MIPv6 domain in the second mobility domain. Point device address information; correspondingly, the mobile node 701 is specifically configured to switch from the ΡΜΙΡνό domain as the first mobile domain to the ΜΙΡν6 domain as the second mobility domain, and obtain the PMIPv6 domain before the handover by using the access router AR of the MIPv6 domain. The anchor device address information stored on the AAA server or the mobile access gateway MAG establishes a tunnel with the anchor device by using the anchor device address information, and uses the tunnel to implement a session with the communication node in the MIPv6 domain.
其中, 信息存储装置 702为域名服务器 DNS, 该域名服务器 DNS保存移动节点 701从 作为第一移动域的 PMIPv6域向第二移动域的 MIPv6域切换前的锚点设备地址信息; 相应 地,移动节点 701,具体用于从作为第一移动域的 PMIPv6域切换到作为第二移动域的 MIPv6 域时, 从域名服务器 DNS获取切换前在 PMIPv6域保存的锚点设备地址信息, 利用所錨点 设备地址信息与锚点设备建立隧道, 并利用该隧道在 MIPv6域实现与通信节点的会话。 The information storage device 702 is a domain name server DNS, and the domain name server DNS saves the anchor device address information before the mobile node 701 switches from the PMIPv6 domain as the first mobile domain to the MIPv6 domain in the second mobility domain; correspondingly, the mobile node 701. Specifically, when switching from a PMIPv6 domain that is the first mobile domain to a MIPv6 domain that is the second mobility domain, obtain, from the domain name server DNS, the anchor device address information saved in the PMIPv6 domain before the handover, and use the anchor device address. The information establishes a tunnel with the anchor device, and uses the tunnel to implement a session with the communication node in the MIPv6 domain.
其中,信息存储装置 702为 AAA服务器或域名服务器 DNS时, 该 AAA服务器或域名 服务器 DNS保存移动节点 701从作为第一移动域的 MIPv6域向第二移动域的 PMIPv6域切 换前的锚点设备地址信息; 相应地,移动节点 701具体用于利用移动接入网关 MAG与錨点 设备之间的隧道在 PMIPv6域实现与通信节点的会话,该隧道由移动接入网关 MAG利用从 AAA服务器或域名服务器 DNS上获取的锚点设备地址信息在锚点设备之间建立。 When the information storage device 702 is an AAA server or a domain name server DNS, the AAA server or the domain name server DNS saves the anchor device address before the mobile node 701 switches from the MIPv6 domain as the first mobile domain to the PMIPv6 domain in the second mobility domain. Correspondingly, the mobile node 701 is specifically configured to implement a session with the communication node in the PMIPv6 domain by using a tunnel between the mobile access gateway MAG and the anchor device, and the tunnel is utilized by the mobile access gateway MAG from the AAA server or the domain name server. The anchor device address information obtained on the DNS is established between the anchor devices.
在本发明实施例中, 在移动节点从第一移动域切换到第二移动域时, 移动节点利用切 换前保存的锚点设备地址信息与通信节点进行会话, 能够保证移动节点在不同域间切换时 保持与通信节点的会话连续不中断。 In the embodiment of the present invention, when the mobile node switches from the first mobile domain to the second mobile domain, the mobile node performs a session with the communication node by using the anchor device address information saved before the handover, and can ensure that the mobile node switches between different domains. The session with the communication node is kept uninterrupted.
以上实施例提供的技术方案可以通过硬件和软件实现, 软件存储在可读取的存储介质 上, 如计算机的软盘, 硬盘或光盘等。 The technical solution provided by the above embodiments can be implemented by hardware and software, and the software is stored on a readable storage medium, such as a floppy disk, a hard disk or an optical disk of a computer.
以上所述仅为本发明的较佳实施例, 并不用以限制本发明, 凡在本发明的精神和原则 之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。
The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.
Claims
1、 一种在不同域间切换时保持会话连续的方法, 其特征在于, 所述方法包括: 移动节点在第一移动域建立与通信节点的会话连接; A method for maintaining a continuation of a session when switching between different domains, the method comprising: the mobile node establishing a session connection with the communication node in the first mobility domain;
所述移动节点从所述第一移动域切换到第二移动域时, 利用切换前在所述第一移动域 存储的锚点设备地址信息实现与所述通信节点的会话。 When the mobile node switches from the first mobility domain to the second mobility domain, the session with the communication node is implemented by using the anchor device address information stored in the first mobility domain before the handover.
2、 如权利要求 1所述的在不同域间切换时保持会话连续的方法, 其特征在于, 所述第一移动域为 PMIPv6域, 所述第二移动域为 MIPv6域; 或 2. The method of maintaining a continuation of a session when switching between different domains according to claim 1, wherein the first mobile domain is a PMIPv6 domain, and the second mobility domain is an MIPv6 domain; or
所述第一移动域为 MIPv6域, 所述第二移动域为 PMIPv6域。 The first mobile domain is a MIPv6 domain, and the second mobility domain is a PMIPv6 domain.
3、 如权利要求 2所述的在不同域间切换时保持会话连续的方法, 其特征在于, 所述移动节点从所述第一移动域切换到第二移动域时, 利用切换前在所述第一移动域 存储的锚点设备地址信息实现与所述通信节点的会话具体包括: 3. The method of maintaining a continuation of a session when switching between different domains according to claim 2, wherein when the mobile node switches from the first mobile domain to the second mobile domain, The implementation of the session device address information of the first mobile domain to implement the session with the communication node specifically includes:
所述移动节点从作为所述第一移动域的 PMIPv6 域切换到作为所述第二移动域的 The mobile node switches from a PMIPv6 domain as the first mobility domain to a second mobility domain
ΜΙΡνό域时, 获取切换前在所述 PMIPv6域保存的锚点设备地址信息; ΜΙΡνό domain, obtaining anchor device address information saved in the PMIPv6 domain before switching;
所述移动节点利用所述锚点设备地址信息建立与所述锚点设备之间的隧道, 利用所述 隧道在所述 MIPv6域实现与所述通信节点的会话。 The mobile node establishes a tunnel with the anchor device by using the anchor device address information, and implements a session with the communication node in the MIPv6 domain by using the tunnel.
4、 如权利要求 3所述的在不同域间切换时保持会话连续的方法, 其特征在于, 所述移动节点从作为所述第一移动域的 PMIPv6 域切换到作为所述第二移动域的 ΜΙΡνό域时, 获取切换前在所述 PMIPv6域存储的锚点设备地址信息具体包括: 4. The method of maintaining a continuation of a session when switching between different domains according to claim 3, wherein the mobile node switches from a PMIPv6 domain that is the first mobility domain to a second mobility domain. In the ΜΙΡνό domain, obtaining the anchor device address information stored in the PMIPv6 domain before the handover specifically includes:
所述移动节点通过所述 MIPv6域的接入路由器 AR从 AAA服务器获得切换前在所述 PMIPv6域保存的锚点设备地址信息; 或 And the mobile node obtains, by using the access router AR of the MIPv6 domain, the anchor device address information saved in the PMIPv6 domain before the handover from the AAA server; or
所述移动节点通过所述 MIPv6域的接入路由器 AR从 PMIPv6域的移动接入网关 MAG 获得切换前在所述 PMIPv6域的锚点设备地址信息。 The mobile node obtains, by using the access router AR of the MIPv6 domain, the anchor device address information in the PMIPv6 domain before the handover from the mobile access gateway MAG of the PMIPv6 domain.
5、 如权利要求 2所述的在不同域间切换时保持会话连续的方法, 其特征在于, 所述移动节点从作为所述第一移动域的 PMIPv6 域切换到作为所述第二移动域的 ΜΙΡνό域时, 获取切换前在所述 PMIPv6域存储的锚点设备地址信息具体包括: 5. The method for maintaining session continuity when switching between different domains according to claim 2, wherein the mobile node switches from a PMIPv6 domain that is the first mobility domain to a second mobility domain. In the ΜΙΡνό domain, obtaining the anchor device address information stored in the PMIPv6 domain before the handover specifically includes:
所述移动节点从域名服务器 DNS获得切换前在所述 PMIPv6域的锚点设备地址信息。
The mobile node obtains anchor device address information in the PMIPv6 domain before the handover from the domain name server DNS.
6、 如权利要求 2所述的在不同域间切换时保持会话连续的方法, 其特征在于, 所述移动节点从作为所述第一移动域的 MIPv6 域切换到作为所述第二移动域的 ΡΜΙΡνό域时, 利用切换前在所述第一移动域存储的锚点设备地址信息实现与所述通信节点 的会话具体包括: 6. The method of maintaining a continuation of a session when switching between different domains according to claim 2, wherein the mobile node switches from a MIPv6 domain that is the first mobility domain to a second mobility domain. When the ΡΜΙΡνό domain is used, the implementation of the session with the communication node by using the anchor device address information stored in the first mobile domain before the handover specifically includes:
所述移动节点利用所述 PMIPv6域的移动接入网关 MAG与所述锚点设备之间的隧道 实现与所述通信节点的会话,所述隧道由所述 PMIPv6域的移动接入网关 MAG利用所述锚 点设备地址信息在所述锚点设备之间建立。 The mobile node implements a session with the communication node by using a tunnel between the mobile access gateway MAG of the PMIPv6 domain and the anchor device, and the tunnel is utilized by the mobile access gateway MAG of the PMIPv6 domain. The anchor device address information is established between the anchor devices.
7、 一种移动节点, 其特征在于, 所述移动节点包括: 7. A mobile node, wherein the mobile node comprises:
获取模块 (601 ), 用于当所述移动节点从第一移动域切换到第二移动域时, 获取切换 前在所述第一移动域保存的锚点设备地址信息; An obtaining module (601), configured to: when the mobile node switches from the first mobile domain to the second mobile domain, acquire anchor point device address information saved in the first mobile domain before switching;
会话模块 (602), 用于利用所述锚点设备地址信息在所述第二移动域实现与所述通信 节点的会话。 The session module (602) is configured to implement a session with the communication node in the second mobility domain by using the anchor device address information.
8、 如权利要求 7所述的移动节点, 其特征在于, 所述会话模块包括: The mobile node according to claim 7, wherein the session module comprises:
隧道建立子模块 (6021 ), 用于利用所述锚点设备地址信息与锚点设备建立隧道; 会话子模块(6022), 用于利用所述隧道在所述第二移动域实现与所述通信节点的会话。 a tunnel establishment sub-module (6021), configured to establish a tunnel with the anchor device by using the anchor device address information, and a session sub-module (6022), configured to implement, by using the tunnel, the communication in the second mobility domain The session of the node.
9、 一种保持会话连续的系统, 其特征在于, 所述系统包括: 9. A system for maintaining a continuous session, wherein the system comprises:
移动节点 (701 ) 和信息存储装置 (702); a mobile node (701) and an information storage device (702);
所述信息存储装置 (702), 用于存储所述移动节点从第一移动域向第二移动域切换前 的锚点设备地址信息; The information storage device (702) is configured to store anchor device address information before the mobile node switches from the first mobile domain to the second mobile domain;
所述移动节点 (701 ), 用于从所述第一移动域切换到所述第二移动域时, 利用所述信 息存储装置 (702) 保存的锚点设备地址信息实现与通信节点的会话。 The mobile node (701) is configured to implement a session with the communication node by using the anchor device address information saved by the information storage device (702) when switching from the first mobile domain to the second mobility domain.
10、如权利要求 9所述的保持会话连续的系统, 其特征在于, 所述信息存储装置(702) 为 AAA服务器或移动接入网关 MAG,所述 AAA服务器或移动接入网关 MAG保存所述移 动节点 (701 )从作为所述第一移动域的 PMIPv6域向作为所述第二移动域的 MIPv6域切换 前的锚点设备地址信息; The system for maintaining session continuity according to claim 9, wherein the information storage device (702) is an AAA server or a mobile access gateway MAG, and the AAA server or the mobile access gateway MAG saves the The mobile node (701) from the PMIPv6 domain as the first mobility domain to the anchor device address information before the handover as the MIPv6 domain of the second mobility domain;
相应地, 所述移动节点(701 ), 具体用于从作为所述第一移动域的 PMIPv6域切换到作
为所述第二移动域的 MIPv6域时, 通过所述 MIPv6域的接入路由器 AR获得切换前在所述 ΡΜΙΡνό域的所述 AAA服务器或所述移动接入网关 MAG上保存的所述锚点设备地址信息, 利用所述锚点设备地址信息与锚点设备建立隧道, 并利用所述隧道在 MIPv6域实现与所述 通信节点的会话。 Correspondingly, the mobile node (701) is specifically configured to switch from the PMIPv6 domain as the first mobile domain to When the MIPv6 domain is the MIPv6 domain of the second mobility domain, obtain the anchor point saved on the AAA server or the mobile access gateway MAG in the ΡΜΙΡνό domain before the handover by using the access router AR of the MIPv6 domain. Device address information, establishing a tunnel with the anchor device by using the anchor device address information, and implementing a session with the communication node in the MIPv6 domain by using the tunnel.
11、 如权利要求 9所述的保持会话连续的系统, 其特征在于, 所述信息存储装置(702) 为域名服务器 DNS, 所述域名服务器 DNS保存所述移动节点 (701 ) 从作为所述第一移动 域的 PMIPv6域向作为所述第二移动域的 MIPv6域切换前的锚点设备地址信息; 11. The system for maintaining session continuity according to claim 9, wherein said information storage device (702) is a domain name server DNS, and said domain name server DNS holds said mobile node (701) from said An anchor device address information of a mobile domain's PMIPv6 domain before being switched to the MIPv6 domain as the second mobility domain;
相应地, 所述移动节点(701 ), 具体用于从作为所述第一移动域的 PMIPv6域切换到作 为所述第二移动域的 MIPv6域时, 从所述域名服务器 DNS获取切换前在所述 PMIPv6域保 存的锚点设备地址信息, 利用所述锚点设备地址信息与锚点设备建立隧道, 并利用所述隧 道在所述 MIPv6域实现与所述通信节点的会话。 Correspondingly, the mobile node (701) is specifically configured to: before switching from a PMIPv6 domain that is the first mobility domain to a MIPv6 domain that is the second mobility domain, obtain a pre-switching location from the domain name server DNS. The anchor device address information saved in the PMIPv6 domain is used to establish a tunnel with the anchor device by using the anchor device address information, and the session with the communication node is implemented in the MIPv6 domain by using the tunnel.
12、 如权利要求 9所述的域间切换时保持会话连续的系统, 其特征在于, 所述信息存 储装置 (702) 为 AAA服务器或域名服务器 DNS, 所述 AAA服务器或域名服务器 DNS保 存所述移动节点(701 )从作为所述第一移动域的 MIPv6域向作为所述第二移动域的 PMIPv6 域切换前的锚点设备地址信息; 12. The system for maintaining a continuous session during inter-domain handover according to claim 9, wherein the information storage device (702) is an AAA server or a domain name server DNS, and the AAA server or domain name server DNS saves the The mobile node (701) transmits anchor point device address information from the MIPv6 domain as the first mobile domain to the PMIPv6 domain as the second mobility domain;
相应地, 所述移动节点(701 ), 具体用于利用所述移动接入网关 MAG和锚点设备之间 的隧道在所述 PMIPv6域实现与所述通信节点的会话, 所述隧道由所述移动接入网关 MAG 利用从所述 AAA服务器或所述域名服务器 DNS上获取的所述锚点设备地址信息在锚点设 备之间建立。
Correspondingly, the mobile node (701) is specifically configured to implement a session with the communication node in the PMIPv6 domain by using a tunnel between the mobile access gateway MAG and an anchor device, where the tunnel is The mobile access gateway MAG establishes between the anchor devices using the anchor device address information obtained from the AAA server or the domain name server DNS.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2008100974747A CN101594609B (en) | 2008-05-27 | 2008-05-27 | Method, system and node for maintaining continuous conversation during switching among different domains |
CN200810097474.7 | 2008-05-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009143723A1 true WO2009143723A1 (en) | 2009-12-03 |
Family
ID=41376586
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2009/071116 WO2009143723A1 (en) | 2008-05-27 | 2009-03-31 | Method, system and node for keeping session continuity at the time of handover between different domains |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN101594609B (en) |
WO (1) | WO2009143723A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103067865A (en) * | 2011-10-19 | 2013-04-24 | 中兴通讯股份有限公司 | Method and system of creating optimized path in switching scene of multicast receiving end |
WO2013095962A1 (en) * | 2011-12-21 | 2013-06-27 | Qualcomm Incorporated | Reducing data optimized session negotiation time and facilitating active handoff |
CN103259882A (en) * | 2013-05-23 | 2013-08-21 | 中国科学院计算机网络信息中心 | Configuration and query method of DNS server of PMIPv6 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101778442B (en) * | 2010-01-04 | 2014-08-20 | 中兴通讯股份有限公司 | Session information storage method and access network equipment |
CN102202286B (en) * | 2010-03-24 | 2014-04-02 | 华为技术有限公司 | Method for terminal access in heterogeneous network, and method and equipment for heterogeneous network switching |
CN103260145B (en) * | 2013-04-18 | 2016-07-20 | 中国科学院计算技术研究所 | The management method of mobile switched based on Business Stream in PMIPv6 territory and system |
CN104349301A (en) * | 2013-08-09 | 2015-02-11 | 中兴通讯股份有限公司 | Double-connection realization method, system and base station |
US10555223B2 (en) | 2015-03-09 | 2020-02-04 | Nokia Technologies Oy | Method and apparatus for providing an indication regarding IP address preservation following a transfer involving a wireless local area network |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1394397A (en) * | 2000-10-26 | 2003-01-29 | 三星电子株式会社 | Handover method for mobile station having mobile IP address in mobile communication system |
CN1518838A (en) * | 2001-06-28 | 2004-08-04 | ��˹��ŵ�� | Protecol to determine optimal target accessrouter for seamless IP-level handover |
CN1784059A (en) * | 2004-11-29 | 2006-06-07 | 中兴通讯股份有限公司 | Fast switching method in MAP field of HMIPv6 |
CN101001442A (en) * | 2006-01-10 | 2007-07-18 | 华为技术有限公司 | Overcell switching method and system in mobile network |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100349432C (en) * | 2004-05-31 | 2007-11-14 | 中国科学院声学研究所 | Tunnel based mobile IPv6 quick switching method |
US20060120171A1 (en) * | 2004-11-12 | 2006-06-08 | Samy Touati | Seamless handoff of mobile terminal |
-
2008
- 2008-05-27 CN CN2008100974747A patent/CN101594609B/en not_active Expired - Fee Related
-
2009
- 2009-03-31 WO PCT/CN2009/071116 patent/WO2009143723A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1394397A (en) * | 2000-10-26 | 2003-01-29 | 三星电子株式会社 | Handover method for mobile station having mobile IP address in mobile communication system |
CN1518838A (en) * | 2001-06-28 | 2004-08-04 | ��˹��ŵ�� | Protecol to determine optimal target accessrouter for seamless IP-level handover |
CN1784059A (en) * | 2004-11-29 | 2006-06-07 | 中兴通讯股份有限公司 | Fast switching method in MAP field of HMIPv6 |
CN101001442A (en) * | 2006-01-10 | 2007-07-18 | 华为技术有限公司 | Overcell switching method and system in mobile network |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103067865A (en) * | 2011-10-19 | 2013-04-24 | 中兴通讯股份有限公司 | Method and system of creating optimized path in switching scene of multicast receiving end |
CN103067865B (en) * | 2011-10-19 | 2017-05-17 | 中兴通讯股份有限公司 | Method and system of creating optimized path in switching scene of multicast receiving end |
WO2013095962A1 (en) * | 2011-12-21 | 2013-06-27 | Qualcomm Incorporated | Reducing data optimized session negotiation time and facilitating active handoff |
CN103259882A (en) * | 2013-05-23 | 2013-08-21 | 中国科学院计算机网络信息中心 | Configuration and query method of DNS server of PMIPv6 |
CN103259882B (en) * | 2013-05-23 | 2015-10-28 | 中国科学院计算机网络信息中心 | The dns server configuration of a kind of PMIPv6 and querying method |
Also Published As
Publication number | Publication date |
---|---|
CN101594609A (en) | 2009-12-02 |
CN101594609B (en) | 2012-08-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8379599B2 (en) | Local mobility anchor relocation and route optimization during handover of a mobile node to another network area | |
TWI437863B (en) | Peer-to-peer mobility management in heterogeneous ipv4 networks | |
WO2010041440A1 (en) | Interface switching system, mobile node, proxy node, and mobile management node | |
KR101400415B1 (en) | Network-based Flow Binding Method Through Terminal's Notification | |
WO2009143723A1 (en) | Method, system and node for keeping session continuity at the time of handover between different domains | |
JP4990985B2 (en) | Proxy mobile IP routing | |
US8045522B2 (en) | Method and system for performing handoff in wireless networks | |
Giust et al. | A network-based localized mobility solution for distributed mobility management | |
WO2009152669A1 (en) | Method for realizing network switching and system and mobile node | |
JPWO2009044539A1 (en) | Communication control method, network node, and mobile terminal | |
US8391209B2 (en) | Fast handover method and system using network-based localized mobility management | |
JPWO2008078633A1 (en) | Communication system, domain management device, edge device, and mobile terminal | |
KR20100106399A (en) | Support for continuity of tunnel communications for mobile nodes having multiple care of addressing | |
WO2009149631A1 (en) | Method for processing state switching information, mobile access gateway and mobile terminal | |
WO2010072135A1 (en) | Method, device and system for network handoff | |
WO2013178013A1 (en) | Mobile node registration method, intercommunication method, switching method and network element | |
Choi et al. | Design and simulation of a flow mobility scheme based on proxy mobile IPv6 | |
Magagula et al. | Enhancing PMIPv6 for better handover performance among heterogeneous wireless networks in a micromobility domain | |
JP2013532920A (en) | System and method for providing mobility using a split home agent structure | |
US20110134883A1 (en) | Network based mobility system and handover method thereof | |
Kim | Low latency cross layer handover scheme in proxy mobile IPv6 domain | |
WO2010000188A1 (en) | A method and apparatus for realizing handover between mobility management domains | |
Ernest et al. | Mobility management with distributed mobility routing functions | |
KR101037531B1 (en) | Method for providing soft handover using communication state information in wireless internet system | |
WO2013044688A1 (en) | Communication method and communication system for a node which is roaming in pmip domains |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 09753441 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 09753441 Country of ref document: EP Kind code of ref document: A1 |