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:
Apr. 15, 2014
Filed:
Dec. 12, 2008
Masayuki Ariyoshi, Tokyo, JP;
Kazushi Muraoka, Tokyo, JP;
Takeo Fujii, Tokyo, JP;
Mai Ohta, Tokyo, JP;
Masayuki Ariyoshi, Tokyo, JP;
Kazushi Muraoka, Tokyo, JP;
Takeo Fujii, Tokyo, JP;
Mai Ohta, Tokyo, JP;
NEC Corporation, Tokyo, JP;
The University of Electro-Communications, Tokyo, JP;
Abstract
In cooperative sensing in which a plurality of cognitive radio apparatus collaboratively exchange sensing information on a status of frequency band usage as a secondary system, the sensing information is efficiently exchanged in the secondary system without influencing communication of the primary system. In a radio communication system according to this invention, a first radio communication device includes means for observing a surrounding radio communication environment, means for converting information obtained by the observation into a parameter used for radio communication, and means for performing transmission by using the parameter, and a second radio communication device includes means for receiving a signal transmitted from the first radio communication device and means for extracting, from the received signal, information on the surrounding radio communication environment that is observed on a transmission side.