The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 31, 2012
Filed:
Nov. 22, 2007
Nobuhiro Masaoka, Gifu, JP;
Nobuhiro Masaoka, Gifu, JP;
Kyocera Corporation, Kyoto, JP;
Abstract
A base station apparatus assigns a time slot, where multiple sub-channels have been frequency multiplexed, to a terminal apparatus. The correspondence between the range of signal strength and time slots is defined such that the time slot differs whenever the range of signal strength differs; a control unit assigns any one of a plurality of sub-channels in the time slot corresponding to the range of low signal strengths, to the terminal apparatus as a ranging channel. An RF unit, a modem unit and so forth perform a ranging operation on the terminal apparatus over the ranging channel assigned. The control unit assigns a sub-channel to the terminal apparatus that has performed the ranging operation, as a communication channel.