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Method, system and device for optimizing route

An optimization method and routing technology, applied in the field of communication, can solve the problems of complex data transmission paths, do not know the MN, and signaling interaction that cannot be optimized for routing, and achieve the effect of simplifying data transmission paths and improving data transmission efficiency.

Inactive Publication Date: 2009-12-30
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] When the MN enters the PMIPv6 domain, since the LMA of the MN only knows the address of the CN, but does not know the LMA address of the CN, and the LMA of the CN does not know the LMA address of the MN, the signaling exchange of route optimization cannot be performed between the LMAs. As a result, the optimal route cannot be established between the MAGs of the MN and CN, and the data transmission path between the MN and CN is relatively complicated.

Method used

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  • Method, system and device for optimizing route
  • Method, system and device for optimizing route

Examples

Experimental program
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Embodiment 1

[0042] This embodiment provides a route optimization method, see figure 1 , the present embodiment takes the route optimization initiated by the LMA1 of the domain where the MN is located as an example for illustration, wherein, the MN, MAG1 and LMA1 form the LMA1 domain, and the CN, MAG2 and LMA2 form the LMA2 domain. The method includes:

[0043] 101: LMA1 obtains the address of LMA2 or MAG2 in the domain where CN is located;

[0044] 102: The LMA1 optimizes the route between the MN and the CN according to the acquired address of the LMA2 or MAG2.

[0045]Among them, LMA1 can obtain the address of LMA2 or MAG2 in the domain where the CN is located in various ways, for example: by obtaining the address of the network element device that maintains CN information, such as DNS (Domain Name Server, domain name server), AAA (Authentication, Authorization and Accounting , authentication, authorization and accounting) server, etc., or, according to the address of the CN, send an ad...

Embodiment 2

[0057] This embodiment provides a route optimization method, see figure 2 , is a structural diagram of a routing optimization system across LMA domains, wherein MN and CN are two different LMAs under the PMIPv6 domain, MN, MAG1 and LMA1 form the LMA1 domain, and CN, MAG2 and LMA2 form the LMA2 domain. MN's home address (Home Address, HoA) and Proxy-CoA (Care-of-Address, care-of address, that is, the address of MAG1) are registered in LMA1, and CN's HoA and Proxy-CoA (that is, the address of MAG2) are registered in LMA2; This embodiment takes figure 2 LMA1 in the domain where the MN is located in initiates route optimization as an example, see image 3 , routing optimization methods include:

[0058] 201: LMA1 sends an LMA_Address_Req (address request) message and starts a timer T1 after receiving a route optimization trigger (such as a data trigger, an application program trigger, etc.).

[0059] The format of the LMA_Address_Req message is shown in Table 1:

[0060] Tab...

Embodiment 3

[0097] see Figure 5 , this embodiment provides a route optimization system, the system includes: a first local mobility anchor point 401 and a second local mobility anchor point 402, wherein,

[0098] The first local mobility anchor point 401 is used to obtain the address of the second local mobility anchor point or the second mobile access gateway by sending an address request message carrying a hop-by-hop option header, and the source address of the address request message is the first local mobile anchor point The address of the anchor point 401, the destination address is the address of the peer communication node; and according to the address of the second local mobility anchor point 402 or the second mobile access gateway, the routing between the mobile node and the communication node is performed optimization;

[0099] The second local mobility anchor point 402 is configured to receive the address request message carrying the hop-by-hop option header sent by the first...

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Abstract

The embodiment of the invention discloses a method, a system and a device for optimizing a route, belonging to the field of communication. The method comprises the following steps: a first local moving anchor point obtains an address of a second local moving anchor point or a second moving access gateway by transmitting an address request message carrying a hop-by-hop option message heading; and the first local moving anchor point optimizes the route between a mobile node (MN) and a communication node (CN) according to the address of the second local moving anchor point or the second moving access gateway. The system comprises the first local moving anchor point and the second local moving anchor point. The device comprises an address obtaining module and a route optimizing module or a message receiving module and a message response module. The embodiment of the invention simplifies a data transmission path between the MN and the CN by obtaining the address of the second local moving anchor point or the second moving access gateway and optimizing the route between the MN and the CN according to the obtained address.

Description

technical field [0001] The present invention relates to the communication field, in particular to a route optimization method, system and device. Background technique [0002] As a mobility management technology at the network layer, Mobile IP technology has the characteristics of being independent of the access protocol of the lower layer and the physical transmission medium, and transparent to the application of the upper layer protocol. Currently, there are mainly two types of mobile IPv6 protocols: Mobile Internet Protocol version 6 (Mobile Internet Protocol version 6, MIPv6) and Proxy Mobile Internet Protocol version 6 (Proxy Mobile Internet Protocol version 6, PMIPv6). [0003] MIPv6 ensures that when the mobile node (Mobile Node, MN) moves to a foreign link, the normal communication between the MN and the correspondent node (Correspondent Node, CN) can still be maintained, that is, the address change of the MN does not affect the upper layer communication. [0004] P...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L29/06H04L12/721
Inventor 糜正琨王灵矫徐相胜颜小俊严为
Owner HUAWEI TECH CO LTD
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