VEHICLE-TO-VEHICLE COMMUNICATION SYSTEM, ON-VEHICLE COMMUNICATION EQUIPMENT AND ROAD SIDE COMMUNICATION EQUIPMENT

Japanese Patent JP3668625

B2

PROBLEM TO BE SOLVED: To enable vehicle-to-vehicle communication between mobile stations by using the same frequency by utilizing a road-to-vehicle communication system for performing communication by using different frequencies for outgoing communication from a base station to the mobile station and incoming communication in the reverse direction while using a communication frame arranging a road-to-vehicle control/ communication slot.
SOLUTION: The road-to-vehicle communication system using different frequencies for an outgoing channel from the base station to the mobile station and the reverse incoming channel is utilized while using the communication frame arranging the road- to-vehicle control/communication slot. By using the same frequency, the vehicle-to- vehicle control communication slot of incoming channel of slots 1 and 2 is provided with a frame control signal SYNC, link request signal REQ, communication data MDC and delivery confirm signal ACKC. While using these respective signal and data, a present station requests communication to the other station, the reference time of the communication frame is reproduced, the mobile station is identified and communication is enabled between vehicles without overlapping a frame control signal FCMC.

Toshiyuki Sakamoto
Toshio Nagashima
Takayuki Iino

JP33292998A

July 06, 2005

November 24, 1998

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株式会社日立製作所

G08G1/09; B60W30/00; H04B7/26; (IPC1-7): H04B7/26; G08G1/09

JP9191286A
JP10229389A

Kenjiro Take

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