Invention Grant
- Patent Title: Method and apparatus for transmitting/receiving CSI-RS operating in massive MIMO system FDD mode
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Application No.: US13728450Application Date: 2012-12-27
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Publication No.: US09635642B2Publication Date: 2017-04-25
- Inventor: Hyojin Lee , Cheol Mun , Kiil Kim , Younsun Kim , Juho Lee , Joonyoung Cho
- Applicant: Samsung Electronics Co., Ltd. , Industry-Academic Cooperation Foundation, Korea National University of Transportation
- Applicant Address: KR KR
- Assignee: Samsung Electronics Co., Ltd,Industry-Academic Cooperation Foundation, Korean National University of Transportation
- Current Assignee: Samsung Electronics Co., Ltd,Industry-Academic Cooperation Foundation, Korean National University of Transportation
- Current Assignee Address: KR KR
- Agency: The Farrell Law Firm, P.C.
- Priority: KR10-2011-0143377 20111227
- Main IPC: H04W4/00
- IPC: H04W4/00 ; H04W72/04 ; H04L5/00 ; H04L5/14 ; H04B7/06 ; H04L1/00 ; H04L1/06

Abstract:
Methods and apparatus are provided for beamforming and information feedback are provided. Signals for beams to be transmitted through corresponding antenna ports, are generated. The beams are formed by precoding the signals with beamforming vectors. The beams are sorted into a number of resource reuse groups based on a resource that is to be shared. The beams are transmitted, using resources allocated per group, to a receiver. Feedback information is generated on at least one antenna port, based on the received beams. The feedback information is transmitted to the transmitter. A beam is selected having a greatest gain for a transmitter using the feedback information. A transmission resource is allocated for the selected beam.
Public/Granted literature
- US20130163544A1 METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING CSI-RS IN MASSIVE MIMO SYSTEM OPERATING IN FDD MODE Public/Granted day:2013-06-27
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