Dedicated short-range communication mobile device for intelligent transport systems

Abstract

A dedicated short-range communication mobile device for Intelligent transport systems, including: an antenna; a data transmission/reception circuit for transmitting and receiving data to and from a ground device through the antenna; a first power supply circuit for supplying power to the data transmission/reception circuit; a received electric field strength detecting unit for measuring a power level of a radio wave transmitted from the ground device; a communication area detecting unit for recognizing a communication area based on an output of the received electric field strength detecting unit; a power supply starting unit for starting the first power supply circuit based on an output of the communication area detecting unit; and a second power supply circuit for supplying power to the received electric field strength detecting unit, the communication area detecting unit and the power supply starting unit. As a result of the above configuration, the mobile device can reduce dissipation and does not complicate communication control.

Claims aren’t available for this document.