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:
Jun. 07, 2011
Filed:
Sep. 17, 2008
Hideaki Shimizu, Fussa, JP;
Masahiro Matsuda, Kodaira, JP;
Hideo Imai, Inagi, JP;
Masaki Suto, Sendai, JP;
Hideaki Shimizu, Fussa, JP;
Masahiro Matsuda, Kodaira, JP;
Hideo Imai, Inagi, JP;
Masaki Suto, Sendai, JP;
Hitachi Kokusai Electric Inc., Tokyo, JP;
Abstract
A wireless relay amplification apparatus includes an interference canceller which generates cancellation waves to cancel interference waves from a mobile station antenna, which are included in downlink signals received by the base station antenna, a downlink amplifier which amplifies downlink signals from which the interference waves have been canceled by the interference canceller, an uplink amplifier which amplifies uplink signals received by the mobile station antenna, a receiver which detects a level of received signals based on the downlink signals from which the cancellation waves have been canceled by the interference canceller, and outputs a propagation loss calculated based on a difference between the detected reception level and a transmission level of the base station included in notification information in the downlink signals, and a controller which controls gain of at least one of the downlink amplifier and the uplink amplifier based on the propagation loss output by the receiver.