PMIPv6 switching method based on busy forward chain

A forwarding chain and state technology, applied in electrical components, wireless communication, etc., can solve problems such as overhead, avoid redundant forwarding, and improve data forwarding efficiency

Inactive Publication Date: 2015-03-25
COMP NETWORK INFORMATION CENT CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the MN is idle and the distance between the LMA and the MAG is far away, the MN's regular location update and location update when switching between MAGs will cause unnecessary overhead

Method used

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  • PMIPv6 switching method based on busy forward chain
  • PMIPv6 switching method based on busy forward chain
  • PMIPv6 switching method based on busy forward chain

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Embodiment

[0025] According to three parts (handover trigger, handover decision-making and handover execution) that the order of handover management is carried out, the present invention mainly comprises the following steps to the extension of PMIPv6:

[0026] 1. Switch trigger

[0027] Although the mobility management operations of the PMIPv6 protocol are all performed by the network entity, it has been recognized in the industry that the participation of the MN can optimize the performance of the mobility management. The present invention stipulates that the MN in PMIPv6 continuously scans available wireless links, that is, available neighbor MAGs in the paging domain, and when MN switching is required, that is, when the MN needs to access other available neighbor MAGs, the MN actively sends Handover trigger message (HI), which is extended from Internet Control Message Protocol (Internet Control Message Protocol, ICMP) message, and its format is as follows figure 1 shown.

[0028] Th...

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PUM

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Abstract

The invention provides a PMIPv6 switching method based on a busy forward chain. By the adoption of the PMIPv6 switching method based on the busy forward chain, unnecessary signaling overheads can be avoided, rapid MN switching is guaranteed, and the mobile management performance of PMIPv6 can be optimized. The PMIPv6 switching method based on the busy forward chain comprises the following steps that (1) switching is triggered, wherein a switching triggering message is sent to a current MAG to which an MN has access; (2) a switching decision is made, wherein the switching decision is made by the current MAG according to the switching triggering message and a threshold K; (3) switching is executed, wherein the forward chain is lengthened by the current MAG to a target MAG if the MN is in the idle state and the length of the forward chain is smaller than the threshold K, rapid switching is initiated if the MN is in the idle state and the length of the forward chain is equal to or larger than the threshold or the MN is in the busy state, and the target MAG is informed that the forward chain is in a loop state by the current MAG through a PBU message when the forward chain is in the loop state, so that the target MAG directly executes caching and waits for MN access instead of conducting forwarding according to the forward chain when the target MAG receives an MN data packet.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a PMIPv6 switching method based on a stateful forwarding chain. Background technique [0002] The mobile nodes (Mobile Node, MN) in the mobile Internet can be divided into two categories: one is the MN in the active state (busy), and this node needs to update the position of the location manager frequently; the other is the MN in the idle state. The MN in the state (idle), this kind of node rarely sends data messages, so it is less necessary to update the location of the location manager. For the active MN, because the location manager knows its precise location information, it can send the message directly to the node. For the MN in the idle state, since the location manager often does not know its precise location information, other techniques are needed to locate such nodes, and this technique is usually called paging. [0003] Paging technology has been widel...

Claims

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Application Information

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IPC IPC(8): H04W36/00
CPCH04W36/0083
Inventor 延志伟胡安磊
Owner COMP NETWORK INFORMATION CENT CHINESE ACADEMY OF SCI
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