| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a technique capable of preventing data loss associated with change of a communication environment, and transmitting data wirelessly with high reliability, in a system for wireless data transmission from a control station to multiple terminals. <P>SOLUTION: A control station apparatus which performs wireless communications with multiple communication apparatuses and sends data to the multiple communication apparatuses comprises: a receiving means to receive, from each of the communication apparatuses identification information of other communication apparatuses with which the communication apparatus is capable of wireless communication; a selection means to select, from the multiple communication apparatuses, a relay apparatus that relays data transmission, based on the received identification information; a determination means to determine a communication timing for relaying performed by the relay apparatus selected by the selection means; and a notification control means to notify the relay apparatus selected by the selection means of an instruction to perform data relay and the communication timing. The selection means selects the relay apparatus so that there can be the communication apparatus that receives the data from the control station apparatus via two or more transmission paths. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
