Router device, datagram transfer method and communication system realizing handoff control for mobile terminals
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United States of America Patent
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-
Dec 19, 2006
Issued Date -
N/A
app pub date -
Jul 26, 2002
filing date -
May 12, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A mobile supporting router device for realizing the handoff control associated with the moving in high speed is forms by at least one first interface connected with radio base stations, each capable of accommodating at least one mobile terminal; at least one second interface connected with a wire network; an information exchanging unit for exchanging a routing protocol on a network layer, through the second interface; a memory unit for storing information regarding a routing on the network layer based on the routing protocol exchanged by the information exchanging unit; a transfer unit for transferring datagram through the first interface according to the information regarding the routing on the network layer stored in the memory unit; a moving detection unit for detecting a moving of the mobile terminal among the radio base stations; and an information updating unit for updating the information regarding the routing on the network layer stored in the memory unit when the moving of the mobile terminal is detected by the moving detection unit.
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