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Packet routing method and system of local mobility management network

A technology for mobility management and network management, applied in the field of local mobility management network, can solve the problems of reducing system efficiency, increasing propagation delay, routing detours, etc., to reduce transmission delay, flexible routing decision, and improve packet The effect of forwarding efficiency

Active Publication Date: 2008-03-05
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, even if CN and MN are under different MAGs in the same NETLMM domain, they must be transferred through LMA, that is, the data packet transmission path is as follows: MN-->MAG1-tunnel->LMA-tunnel->MAG2-->CN, As a result, the route is circuitous, the propagation delay is increased, and the system efficiency is reduced.

Method used

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  • Packet routing method and system of local mobility management network
  • Packet routing method and system of local mobility management network
  • Packet routing method and system of local mobility management network

Examples

Experimental program
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Embodiment 1

[0078] In this embodiment, it is assumed that the originating node MN and the receiving node CN of both communication parties belong to the same LMM domain, and they enter the local mobility management network through MAG1 and MAG2 respectively, and the access process, address configuration process and location update process of both parties will be Fully comply with the prior art, no more details here.

[0079] FIG. 5 is a specific flowchart of a packet routing method of a local mobility management network in Embodiment 1 of the present invention. As shown in Figure 5, the method includes:

[0080] Step 501, establishing a message forwarding path;

[0081] In this step, MN and CN firstly forward data through traditional paths: LMA, MAG1 and MAG2 respectively store the access location information and message forwarding mode information of MN and CN, and establish tunnels between LMA and MAG1, and LMA and MAG2 . The tunnel between LMA and MAG1, and between LMA and MAG2 is IP...

Embodiment 2

[0115] In this embodiment, the same message forwarding path as the process shown in Figure 5 is adopted. In addition, it is also assumed that the redirection notification message sent by LMA to MAG1 has a certain validity period, and MAG1 will redirect the notification message within the validity period of the redirection notification message. The message is directly forwarded to CN through MAG2.

[0116] The scenario in this embodiment is: during the process of message forwarding, the receiving node CN moves in the local mobility management domain, so that the MAG attached to the CN changes from the original MAG2 to MAG3. After moving within the local mobility management domain, the access device MAG3 attached to the CN is still located in the local mobility management domain controlled by the original LMA.

[0117] After CN moves and CN's MAG changes, LMA will get the location registration message of CN's new location (namely MAG3). At this time, LMA will query the redirecti...

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Abstract

The method includes steps: after determining that both the node of sending end (NSE) and the node of receiving end (NRE) are located within local mobile management domain controlled by local mobile anchor point (LMAP), LMAP starts up optimizing route; access device attached to NSE forwards message to be sent to the access device attached to NRE directly without need of forwarding by LMAP; after receiving message, the access device attached to NRE forwards the message to NRE. Thus, the invention can optimize route, and reduce transmission delay. The invention also discloses the system for routing message of local mobility management network. The system includes NSE, NRE, the access device attached to NSE, and the access device attached to NRE.

Description

technical field [0001] The invention relates to the technology of the local mobility management network, in particular to a routing method and system of the local mobility management network. Background technique [0002] The NETwork-based Localized Mobility Management (NETLMM, NETwork-based Localized Mobility Management) system has two notable features in order to keep the IP address unchanged before and after the move: [0003] 1. Support the mobile terminal to move in a specific area (belonging to the same local management domain before and after the move); [0004] 2. The above-mentioned mobility functions are implemented by the network, and there is no special requirement for the terminal. [0005] These two points are also significant differences from the traditional Mobile IP (MIP, Mobility IP). MIP is a global network mobility management protocol. MIP needs host support to implement global mobility. [0006] Due to the statistical characteristics of people's moving...

Claims

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Application Information

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IPC IPC(8): H04L12/56
CPCH04W80/04H04W64/00H04W8/082H04W40/36H04W8/087
Inventor 管红光
Owner HUAWEI TECH CO LTD
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