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. 11, 2006
Filed:
Oct. 28, 2003
Anil Umesh, Yokohama, JP;
Shinya Tanaka, Yokohama, JP;
Takehiro Nakamura, Yokosuka, JP;
Koichi Okawa, Yokohama, JP;
Anil Umesh, Yokohama, JP;
Shinya Tanaka, Yokohama, JP;
Takehiro Nakamura, Yokosuka, JP;
Koichi Okawa, Yokohama, JP;
NTT DoCoMo, Inc., Tokyo, JP;
Abstract
The object of the present invention is to avoid disconnection of a radio link between the radio base station and the mobile station even when the mobile station moves while transmitting no up signals in a case where the radio base station transmits the directional beam. The radio base station according to the present invention comprises an array antennato transmit/receive the directional beam, an transceiverto receive an up signal from a mobile stationand to generate a directional beam pattern for each mobile station according to an antenna weight, a up signal interval measurerto measure elapsed time from reception of the up signal, and a antenna weight generatorto change the antenna weight based on a result of measuring by the up signal interval measurer