| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce the output consumption on the sensor side by minimizing the number of occasions when sensors wait for data, in particular, even if sensors have their respective different timer precisions. <P>SOLUTION: A coordinator 3 allocates, based on information previously received from sensors 2, the sensors to respective slots constituting a super-frame, in a time sequence order and then notifies the sensors 2 of the respective slots to which the sensors are allocated. When each of the sensors 2 transmits data to the coordinator 3, the sensor makes a synchronization request at the timing of the notified slot without receiving any beacons from the coordinator. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
