发明申请
- 专利标题： REPORT METHOD AND ACCESS CONTROL DEVICE
- 专利标题（中）： 报告方法和访问控制设备
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申请号： US13056882申请日： 2009-07-30
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公开(公告)号： US20110134789A1公开(公告)日： 2011-06-09
- 发明人: Makoto Nagai , Keisuke Higuchi , Ken Nakaoka , Yoshiharu Doi
- 申请人： Makoto Nagai , Keisuke Higuchi , Ken Nakaoka , Yoshiharu Doi
- 优先权： JP2008-198941 20080731; JP2008-198942 20080731
- 国际申请： PCT/JP2009/003613 WO 20090730
- 主分类号： H04W72/04
- IPC分类号： H04W72/04 ; H04W24/00
摘要：
It is specified that a frame containing at least the plurality of slots is repeated. A detecting unit detects a slot usable in the communications between terminal apparatuses, from among a plurality of slots. A modem unit and an RF unit broadcast the information on the detected slot. A power measuring unit in the detecting unit measures the respective received powers of the plurality of slots, and an empty slot identifying unit identifies a slot whose received power is less than a threshold value.
公开/授权文献
- US08976687B2 Broadcasting method and access control apparatus 公开/授权日：2015-03-10