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:
May. 05, 2015
Filed:
Aug. 04, 2011
Yoshizo Sato, Daito, JP;
Masaaki Nakata, Yamato, JP;
Nobuaki Takamatsu, Koto-ku, JP;
Masahiro Yagi, Kawasaki, JP;
Hiroki Fujita, Yokohama, JP;
Yoshizo Sato, Daito, JP;
Masaaki Nakata, Yamato, JP;
Nobuaki Takamatsu, Koto-ku, JP;
Masahiro Yagi, Kawasaki, JP;
Hiroki Fujita, Yokohama, JP;
KYOCERA Corporation, Kyoto, JP;
Abstract
A transmission path state estimation unit estimates a state of a transmission path to a wireless terminal based on a DRS (Demodulation Reference Signal) included in uplink user data received from the wireless terminal when a re-sending request is received after transmission of an SRS is stopped. A transmission unit forms directivity of a plurality of antennas based on the estimated state of the transmission path and transmits downlink user data.