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. 10, 2003
Filed:
Jul. 19, 2000
Kazuhito Ishida, Yokohama, JP;
Seiko Shimogama, Yokohama, JP;
Toshiaki Kurokawa, Yokohama, JP;
Tsutomu Yamaguchi, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Even if traffic concentrates on a specific place in a cellular radio communication in which a base station communicates with its corresponding wireless terminal, power to be used up or consumed by the base station can be restricted. Further, the equality of communication is satisfactory and the need for a change in the conventional wireless terminal is eliminated. Therefore, two types of sectors corresponding to a wide range sector and narrow range sectors each overlapping with the wide range sector are defined in a multi-sector model. Further, a wide range antenna for the wide range sector and narrow range antennas for the narrow range sectors are separately prepared for the base station. Afterwards, signals are transmitted to wireless terminals located within the narrow range sectors by using both the wide range antenna and the narrow range antennas. In the case of CDMA in particular, the same signal is transmitted with respect to a traffic channel alone.