NOTIFYING METHOD, AND ACCESS CONTROL DEVICE

摘要

Disclosed is an access control device, wherein frames containing a first period composed of slots and a second period having a predetermined length are so regulated as to be repeated, and wherein a detection unit (32) detects the slots which can be used for communications between other radio devices, from the slots in the first one of the first and second periods.  A modulation/demodulation unit (24) and an RF unit (22) notify information relating to the detected slots.