METHOD FOR TRANSMITTING MOBILE OBJECT DATA AND RECORDING MEDIUM STORING THE METHOD

摘要

PROBLEM TO BE SOLVED: To obtain a mobile object data transmission method capable of transmitting data by efficiently switching a base station while following the movement of a mobile object. SOLUTION: In the mobile object communication system arranging plural road side devices respectively having spot transceivers on respectively separated positions, connecting these road side devices to respective zone controllers and connecting these zone controllers to a server, a mobile object receives a connection signal from a certain road side device within an idle phase, transmits movement information such as the current position, moving speed and moving direction of the mobile object to the road side device concerned and the road side device transmits the movement information to a certain zone controller, which transmits the movement information to the server. The server selects a mobile object group consisting of plural mobile objects each requiring the same information on the basis of the movement information sent from respective mobile objects and transmits data to plural zone controllers connected to the road side devices allowed to be communicated with these mobile objects by a multicast procedure.