SYSTEM FOR COMMUNICATION AMONG CARS AND DEVICE FOR COMMUNICATION AMONG CARS

摘要

PROBLEM TO BE SOLVED: To reduce the load of the packet transmission of the communication among cars. SOLUTION: A car station 3 located in the vicinity of the head of a group 1 of cars and a car 4 located in the vicinity of the tail of the group 1 of cars and a car station 5 located in the vicinity of the head of a group 2 of cars and a car 6 in the vicinity of the tail of the group 2 of cars are set as relay car stations, and a packet relay transmission between the groups 1 and 2 of cars adjacent to each other is performed via these relay car stations.