| 摘要 |
<p>A pilot signal is repeatedly transmitted toward the communication zone of a confirmation antenna (22). As an IU (18) on a vehicle arrives at the communication zone (22), it transmits a pilot response signal in reply to the pilot signal. When the confirmation antenna (22) receives the pilot response signal, a procedure relating to the confirmation of debiting will be executed. When a given time period has passed after this procedure has terminated, the IU (18) transmits an existence-in-second-gantry(12)-zone signal in response to the pilot signal, if the vehicle still exists in the communication zone. By receiving the existence-in-second-gantry(12)-zone signal, it can be ascertained that the vehicle having been confirmed the debiting exists in the communication zone (22). Even if a plurality of vehicles (16) are running in the same lane side-by-side, each of these vehicles (16) can be distinguished from one another (16). The mobile communication method may be similarly applied to any other moving body, as well as to a road vehicle (16). <IMAGE></p> |
