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Title:
METHOD AND APPARATUS FOR TRANSMITTING CHANNEL STATE INFORMATION IN WIRELESS COMMUNICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2014/196822
Kind Code:
A1
Abstract:
The present invention relates to a wireless communication system. A method for transmitting channel state information (CSI) by a terminal in a wireless communication system according to an embodiment of the present invention comprises the steps of: subsampling a first codebook associated with a first precoding matrix indicator (PMI) and a second codebook associated with a second PMI according to a report sub-mode for four antenna ports; and reporting channel state information on the basis of the subsampled first codebook and the subsampled second codebook, wherein a first codebook index for the first PMI may be determined as one of 0, 4, 8, and 12 when a rank indicator (RI) is 1 or 2, a second codebook index for the second PMI may be determined as one of 0, 2, 8, and 10 when the RI is 1, and the second codebook index for the second PMI may be determined as one of 0, 1, 4, and 5 when the RI is 2.

Inventors:
KIM HYUNGTAE (KR)
PARK HANJUN (KR)
Application Number:
PCT/KR2014/005000
Publication Date:
December 11, 2014
Filing Date:
June 05, 2014
Export Citation:
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Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H04B17/00; H04B7/04
Foreign References:
US20120218948A12012-08-30
KR20110114482A2011-10-19
US20120314590A12012-12-13
Other References:
MOTOROLA: "4 Tx Codebook Design based on Two-Component Framework", 3GPP TSG RAN1 #62, R1-104698, 23 August 2010 (2010-08-23), Madrid, Spain, XP050598609, Retrieved from the Internet
ZTE: "Further Design Refinement and Performance Evaluation of 2-Level", 3GPP TSG RAN WG1 MEETING#62, R1-104557, 23 August 2010 (2010-08-23), Madrid, Spain, XP050449854, Retrieved from the Internet
See also references of EP 3007374A4
Attorney, Agent or Firm:
KIM, Yong In et al. (7th Floor 82 Olympic-ro,Songpa-ku, Seoul 138-861, KR)
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