ON-ROAD COMMUNICATION SYSTEM AND ON-ROAD COMMUNICATION METHOD, AND COMPUTER PROGRAM

摘要

PROBLEM TO BE SOLVED: To make a mobile communication apparatus perform appropriate radio communication depending on a road situation.SOLUTION: A road side communication apparatus 2 can comprise: an allocation unit 23a for allocating a first time slot T1 for prohibiting an on-vehicle communication apparatus 3 from transmitting a radio signal and permitting the road side communication apparatus 2 itself to transmit a radio signal, and a second time slot T2 including a priority time slot T21 for permitting an on-vehicle communication apparatus 3 satisfying predetermined priority condition to transmit a radio signal; and a transmission unit 21 for transmitting time slot information on the first and second time slots T1 and T2 allocated by the allocation unit 23a to an on-vehicle apparatus 3 in a communication area A1.