Handover method in mobile communication system and router device used in mobile communication system

A handover and router technology, applied in the field of router equipment, can solve problems such as statelessness, disordered packet order, and inefficient routing selection
CN1467959AInactive Publication Date: 2004-01-14FUJITSU LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
FUJITSU LTD
Publication Date
2004-01-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

An old care-of address is assigned to a mobile node in the communication area of the old access router and the mobile node is communicating with a correspondent node. Immediately before the mobile node enters the communication area of a new access router, a binding update message is transmitted to a diverging point router. The diverging point router is a router device located in the node where a route from the correspondent node to the old access router and a route from the correspondent router to the new access router are diverged. The diverging point router transfers packets addressed to the old care-of address to the new care-of address assigned to the mobile node in the communication area of the new access router.
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Description

Technical field

[0001] The present invention relates to a handover method in a mobile communication system and a router device used in a mobile communication system. The present invention particularly relates to a method for handover in an IP network provided by a mobile communication service and its A kind of router. Background technique

[0002] In recent years, with the rapid spread of the Internet and cellular phones, various systems to access the Internet have been developed. For example, second-generation mobile communication networks such as GPRS (General Packet Radio System), PDC-P (Personal Digital Cellular Mobile Packet Communication System), third-generation mobile communication networks such as UMTS (Universal Mobile Telecommunications System), and Small-scale wireless access networks such as wireless LAN and Bluetooth have been put into practical use. In the future, it is expected that the fourth-generation mobile communication network and other new access technologi...

Claims

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