Multiple LMA selection method in mobile node switching process in PWIPv6 domain

A technology for mobile nodes and handover process, applied in electrical components, wireless communication, network data management, etc., can solve problems that cannot be realized independently, and achieve the effects of maintaining validity, easy implementation, and simple operation methods

Inactive Publication Date: 2009-11-25
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

In short, this method needs to be completed in cooperation with the mechanism of obtaining the n-MAG address in advance, and cannot be implemented independently

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  • Multiple LMA selection method in mobile node switching process in PWIPv6 domain
  • Multiple LMA selection method in mobile node switching process in PWIPv6 domain
  • Multiple LMA selection method in mobile node switching process in PWIPv6 domain

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Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0034] see figure 1 and figure 2 , the two figures show the PBU message format and the PBA message format specified in RFC 5213. An important innovation of the present invention is to expand the PBU and PBA messages into an initial binding update message IBU (Initial Binding Update) and an initial binding confirmation message IBA (Initial Binding Acknowledgment) respectively.

[0035] The initial binding update message IBU is to add a new flag I in the PBU message and expand it into an IBU message (see image 3 shown), the other flag bits are the same as the PBU flag bits specified in RFC 5213. The I bit must be set to 1 if the message is a Binding Update querying a previous connection, and 0 otherwise. Other fields in the IBU message are the same as those in...

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Abstract

A multiple LMA selection method in the mobile node switching process in the PWIPv6 domain is provided, wherein an N-MAG transmits the specific IBU message to the all LMAs in one PWIPv6 domain via respectively spreading the PBU message and the PBA message between the MAG and the LMA when the MN is switched from the p-MAG to the n-MAG, only the LMA preserving the MN previously bound information can update the MN bound information according to the content of the IBU message, and transmit the corresponding IBA message, other LMA can not echo, the n-MAG finally set up the binding relation for the identical LMA selected by the MN so as to ensure that the MN is all bound with the same LMA before and after the MN switching, thus solving the problem of the re-authentication of the AAA server, keeping the AAA information availability and service continuity, and optimizing the MN switching performance. The method can not spread the other protocol, has little change for the present message format and the process flow of the PMIPv6, and can not depend on the other external structure added method, with simple, convenient and easy operation steps.

Description

technical field [0001] The present invention relates to a method for selecting a plurality of local mobility anchor LMAs during the handover process of a mobile node in a PMIPv6 domain. When switching between two mobile access gateways MAG, how to select the multiple LMAs belongs to the technical field of mobile Internet. Background technique [0002] The IETF Proxy Mobile IPv6 protocol (PMIPv6, Proxy Mobile IPv6) is a network layer mobility management protocol based on the mobile IPv6 protocol (MIPv6, Mobile IPv6) extension, and its core functional entities include Mobile Access Gateway (MAG, MobilityAccess Gateway) and Local Mobility Anchor (LMA, Local Mobility Anchor) works together to provide mobility management for mobile nodes in the PMIPv6 management domain. Among them, the MAG is located on the access link of the mobile node, responsible for discovering the moving in and out of the mobile node, and sending the binding information of the mobile node to the LMA. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W8/08H04W36/12H04W60/00H04W80/04
Inventor 胡博陈山枝蒋晓燕郭小莉李玉宏
Owner BEIJING UNIV OF POSTS & TELECOMM
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