Communication recovery method for mobile positioning point fault, proxy equipment and mobile node

Abstract

The present invention relates to the radio communication system, discloses a communication recoverying method of movable location point fault, agent apparatus and mobile nodes, the communication interrupt caused by MAP fault can be quickly recovered in minor expense. In the present invention, after testing that the MAP of the MN goes wrong, the HA of the MN acquires the effective LCoA of the MN; forwards the message which is received from the CN and is required to transmit to the MN, to the MN by taking the effective LCoA as a destination address; and forwards the message which is received from the MN to the CN by taking the effective LCoA as a source address. The MN carries the current LCoA of the MN and the validity period of the LCoA in the BU message transmitted to the HA. The fault of the MAP can be detected by the MN, or can be tested by the CN. If the CN detects that the MAP goes wrong, the HA needs to inform the MN that the MAP of the MN is invalidated, so that the MN can quickly recover the interrupted communication in an LCoA mode.

Description

technical field [0001] The invention relates to a wireless communication system, in particular to a communication recovery technology for a fault in a mobile positioning point. Background technique [0002] The purpose of Mobile IP (Mobile IP, referred to as "MIP") is to make the mobile node (Mobile Node, referred to as "MN") have a constant IP address when moving. The method is that when the MN enters the access network, the access network assigns it A care-of address (Care-ofAddress, referred to as "CoA"), the MN uses the CoA to register with the home agent (Home Agent, referred to as "HA"), and the HA combines the MN's CoA with the home address (Home Address, referred to as "HoA") bound. The opposite end of the communication uses the HoA of the MN to send the data packet to the HA, and the HA forwards the data packet to the MN through the bound CoA. Although in the standard MIPv6 (v6 version of mobile IP), the original session can be well maintained when the node moves,...

AI Technical Summary

Problems solved by technology

In addition, this scheme is not only expensive, but also has a large overhead for synchronous signaling

If the multi-RCoA binding scheme is adopted, major changes need to be made to the HMIPv6 protocol. For example, corresponding changes must be made to the relevant modules of entities such as MN, CN, and HA in HMIPv6, and the message overhead, etc. larger

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