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:
Nov. 18, 2014
Filed:
Feb. 03, 2012
Kenzaburo Fujishima, Kokubunji, JP;
Tsuyoshi Tamaki, Machida, JP;
Yunjian Jia, Yokohama, JP;
Hitoshi Ishida, Fujisawa, JP;
Kenzaburo Fujishima, Kokubunji, JP;
Tsuyoshi Tamaki, Machida, JP;
Yunjian Jia, Yokohama, JP;
Hitoshi Ishida, Fujisawa, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
To secure a constant level or more of radio communication quality for each user equipment performing radio communication with a base station apparatus, and to increase the number of user equipment which the base station apparatus can accommodate under a condition of assuring the radio communication quality. In a radio communication system where there exist a base station apparatus having multiple antennas and user equipment for performing radio communication with a first antenna group including one or more of the antennas, the first antenna group is made configurable for each user equipment individually, and addition/deletion of the antenna to/from the first antenna group is performed based on the communication quality of each user equipment so that the number of antennas within the first antenna group may be minimized within a range satisfying a required value of the communication quality between the base station apparatus ad the user equipment.