DATA CONTROL METHOD BY HAND OVER IN SYSTEM OF COMMUNICATION BETWEEN ROAD AND CAR

Japanese Patent JP3777996

B2

PROBLEM TO BE SOLVED: To provide a data control method which realizes accurate and efficient communication, as regards a system of communication between a road and a car, where a mobile station on a road traveling at high speed and a plurality of radio base stations where microcells of 30 m or thereabouts in cell diameter are arranged continuously along that road communicate with each other, while performing hand over.
SOLUTION: The station on transmission side being the mobile station or the radio base station has a division stage, where it divides data signals into a plurality of packete signals as stipulated by the length of fixing time and a transmission stage, where it adds data signals for control including order control information separately to each packete signal and transmits them, and the station on reception side which is the radio base station or mobile station has a coupling stage, where it couples the plural packete signals with one another in the order, using the order control information. The order control information includes order identification codes, total number of packets, and information regarding whether the divided packet signals exist.

Hiroyasu Ishikawa
Tadayuki Fukuhara
Keizo Sugiyama
Hideyuki Shinonaga

JP2001070682A

May 24, 2006

March 13, 2001

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Kddi research institute

G08G1/09; H04B7/26; H04L12/28; H04W36/02; H04W36/08; H04W36/30; H04W36/36; H04W72/04; (IPC1-7): H04B7/26; G08G1/09; H04Q7/36; H04L12/28

JP10145835A
JP10336746A
JP2000196602A
JP2001509652A

WO1999003291A1
WO2000005909A1

Keiichi Yamamoto

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