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, 2008
Filed:
Feb. 04, 2005
Kenzaburo Fujishima, Kokubunji, JP;
Mikio Kuwahara, Hachioji, JP;
Masanori Taira, Yokohama, JP;
Koji Meguro, Yokohama, JP;
Toru Okamoto, Yokohama, JP;
Kenzaburo Fujishima, Kokubunji, JP;
Mikio Kuwahara, Hachioji, JP;
Masanori Taira, Yokohama, JP;
Koji Meguro, Yokohama, JP;
Toru Okamoto, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Communication Technologies, Ltd., Tokyo, JP;
Hitachi Advanced Systems Corporation, Yokohama-Shi, JP;
Abstract
A radio communication apparatus enhances cell throughput by adaptive selection of spatially multiplexed channels in consideration of interferences in a local cell and reducing load for calculation of array weights by storing them in advance as fixed values and outputting fixed beams. To reduce the calculation load for the adaptive selection of spatially multiplexed channels that takes interferences within the local cell into consideration, the radio communication apparatus adopts a packet scheduling method that selects a combination of fixed beams and determines the number of spatially multiplexed channels, based on the fixed beams for mobile apparatuses with packets waiting to be transmitted and pre-calculated correlative quantities of inter-beam interferences between these fixed beams.