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. 19, 2016
Filed:
Aug. 06, 2012
Keigo Hasegawa, Tokyo, JP;
Masayuki Takekawa, Tokyo, JP;
Keat Beng Toh, Tokyo, JP;
HITACHI KOKUSAI ELECTRIC, INC., Tokyo, JP;
Abstract
A technique for enabling utilization of a one-way link in wireless communication systems of the type using whitespaces is disclosed. A wireless communication system is arranged to include a transmitting station which transmits data by wireless communication and receiving stations which receive data as sent thereto, for performing wireless communication by using a whitespace. The receiving station detects data receivability at a specific frequency and sends communication quality information which is a detection result thereof to the transmitting station. The transmitting station holds this communication quality information. Then, upon startup of data reception by wireless communication, the receiving station sends to the transmitting station a packet indicating required quality which is a condition for the data reception. The transmitting station selects, by reference to the communication quality information, a frequency satisfying this required quality and allocates it to the receiving station as a frequency used for data transmission.