| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable a group of sensor slave stations to establish a reliable unidirectional radio communication with respect to a master station. <P>SOLUTION: In a radio communications system, comprising the plurality of sensor slave stations and the master station for receiving the data, the master and slave stations have a radio controlled watch, the transmission timing between the sensor slave stations is adjusted, and a specified plural number of past data are transmitted together in transmission, thus achieving a stable data communication system that comprises such a retry transmission. <P>COPYRIGHT: (C)2007,JPO&INPIT |
