Invention Grant
- Patent Title: Wireless base station and wireless communication method
- Patent Title (中): 无线基站和无线通信方式
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Application No.: US13814334Application Date: 2011-08-04
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Publication No.: US09025554B2Publication Date: 2015-05-05
- Inventor: Yoshizo Sato , Masaaki Nakata , Nobuaki Takamatsu , Masahiro Yagi , Hiroki Fujita
- Applicant: Yoshizo Sato , Masaaki Nakata , Nobuaki Takamatsu , Masahiro Yagi , Hiroki Fujita
- Applicant Address: JP Kyoto
- Assignee: KYOCERA Corporation
- Current Assignee: KYOCERA Corporation
- Current Assignee Address: JP Kyoto
- Agency: Procopio, Cory, Hargreaves & Savitch LLP
- Priority: JP2010-178135 20100806
- International Application: PCT/JP2011/067885 WO 20110804
- International Announcement: WO2012/018088 WO 20120209
- Main IPC: H04W72/04
- IPC: H04W72/04 ; H04L5/00 ; H04L25/02 ; H04L1/18 ; H04W16/28 ; H04W88/08 ; H04B7/06
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.
Public/Granted literature
- US20130215847A1 WIRELESS BASE STATION AND WIRELESS COMMUNICATION METHOD Public/Granted day:2013-08-22
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