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Method for realizing network layer switching in mobile IP

A network layer and mobile node technology, applied in the direction of electrical components, transmission systems, radio/inductive link selection and arrangement, etc., can solve problems such as communication interruption and packet loss, reduce packet loss, make full use of hardware resources, and facilitate functions extended effect

Inactive Publication Date: 2007-02-14
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the implementation of this solution is still based on a single link, the time coordination between the Layer 3 handover and the Layer 2 handover is very important. If the original link is disconnected before the network layer handover is completed, the communication will still be interrupted. causing packet loss

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  • Method for realizing network layer switching in mobile IP
  • Method for realizing network layer switching in mobile IP
  • Method for realizing network layer switching in mobile IP

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Embodiment Construction

[0052] The core idea of ​​the present invention is: establish dual links for each mobile node, when the mobile node is in the non-handover state, the mobile node uses the established dual links to communicate in parallel; when the mobile node is in the handover state, only disconnect One of the dual links, that is, use one link to maintain the original connection, and use the other link to establish a new connection. After the network layer switching of the new link is completed, the link that maintains the original connection is disconnected. Create a new connection.

[0053] Each mobile node includes two states: one is the state that the mobile node is in the process of handover; the other is the state that the mobile node is in normal communication before or after the handover.

[0054] The premise of the present invention is that a dual link for communication is established between the mobile node and the base station to which it currently belongs.

[0055] Based on this ...

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Abstract

Key point of the invention is that dual communication links between mobile node and base station current the node belongs to are built. The method includes steps: (1) after network layer determines that network switching is needed, disconnecting one of the dual links, and building a new link connected to the target base station to be switched; (2) using new built link, mobile node carries out network registration to home and network layer switching; (3) after completion of registration, the other link is disconnected and another new connection in new sub network is built. The invention raises switching speed and reduces package loss under condition of uninterrupted communication.

Description

technical field [0001] The invention relates to mobile IP switching technology, in particular to a method for realizing network layer switching in mobile IP. Background technique [0002] With the rapid popularization of the Internet, the extensive use of portable devices, the rapid development of wireless communication devices, and the increase in people's dependence on the network, mobile users hope to access the corporate network anytime, anywhere in a more flexible way. Resources and Internet resources, that is to say, the user has a demand for the mobility of the host, hoping that the host does not need to interrupt the existing communication connection when changing its location. For this reason, the Internet Engineering Task Force (IETF) has defined Mobile IP (Mobile IP). Mobile IP is a network layer solution that supports host mobility. On the basis of hardware, it provides a location tracking and IP data message forwarding mechanism. When a host moves, the IP data ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q7/38H04L29/06H04W36/10H04W36/12
Inventor 夏寅贲田霖张大伟李未
Owner BEIHANG UNIV