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    • 43. 发明专利
    • RADIO TRANSMISSION CONTROL SYSTEM
    • JP2003219468A
    • 2003-07-31
    • JP2002010711
    • 2002-01-18
    • MITSUBISHI ELECTRIC CORP
    • TONOI TETSUYASHIBUYA AKIHIRO
    • H04L1/16H04B7/26H04W24/08H04W28/04H04W84/10H04W88/06H04W92/08H04Q7/38H04Q7/34
    • PROBLEM TO BE SOLVED: To obtain a radio transmission control system wherein a district having a bad state of a transmission line between a base station and a mobile station during communicating is predicted, the communication is terminated before entering the district, and in the district having the bad state of the transmission line a retransmission process is not conducted. SOLUTION: When a mobile unit repeats the retransmission during communicating with the base station, a transmission and reception failure notification is transmitted to a car navigation, the car navigation which receives the failure notification, transmits a retransmission interruption notification to the mobile unit, stops the retransmission and notifies the transmission/reception failure information added with position information to the transmission/reception failure notification to a roadside unit control server via a roadside unit. The roadside control server delivers notifying transmission/ reception failure information to the roadside unit based on the position information of the transmission/reception failure information. The roadside unit revises the stored transmission/reception failure information based on the notifying transmission/reception failure information, and notifies the failure information to the car navigation carried on a vehicle. The car navigation predicts the transmission/reception failure district based on the transmission/reception failure information, generates the communication control information, and controls the communication of the mobile unit. COPYRIGHT: (C)2003,JPO