| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technique which enables a system wirelessly transmitting data from a control station to a plurality of terminal stations to prevent data omission due to change in a communication environment and to wirelessly transmit data with high reliability. <P>SOLUTION: A wireless communication system comprises a plurality of communication devices and a control device which transmits data to the plurality of communication devices via a relay device. A communication device transmits identification information of other communication devices which can communicate, and receives data from the control device or other communication devices. When the control device has given notice of a relay instruction and communication timing of data, at least one of the plurality of communication devices and the relay device control transmission of data according to communication timing at which data can be received from the control device and two or more of the plurality of communication devices. <P>COPYRIGHT: (C)2013,JPO&INPIT |
