METHOD FOR TRANSMITTING REFERENCE SIGNAL IN DOWNLINK MULTI-INPUT MULTI-OUTPUT SYSTEM

Title:

METHOD FOR TRANSMITTING REFERENCE SIGNAL IN DOWNLINK MULTI-INPUT MULTI-OUTPUT SYSTEM

Document Type and Number:

WIPO Patent Application WO/2010/087639

Kind Code:

A2

Abstract:

Provided is a method for transmitting a reference signal (RS) in a downlink multi-input multi-output (MIMO) system which supports a first user equipment (UE) for supporting N transmitting antennas from among a total of M transmitting antennas and a second UE for supporting M transmitting antennas (wherein, M > N). The method comprises the steps of: generating a subframe for simultaneously supporting the first UE and the second UE at a base station; transmitting the subframe; and mapping a common reference signal (CRS) for antenna port 0 to antenna port N-1, mapping a CRS for antenna port N to antenna port M-1, and controlling a power level of a CRS for antenna port 0 to antenna port N-1 and a power level of a CRS for antenna port N to antenna port M-1, independently from one another, at the subframe.

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Inventors:

LEE MOON IL (KR)
LEE WOOK BONG (KR)
CHUNG JAE HOON (KR)
KO HYUN SOO (KR)
IHM BIN CHUL (KR)

Application Number:

PCT/KR2010/000542

Publication Date:

August 05, 2010

Filing Date:

January 29, 2010

Export Citation:

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Assignee:

LG ELECTRONICS INC (KR)
LEE MOON IL (KR)
LEE WOOK BONG (KR)
CHUNG JAE HOON (KR)
KO HYUN SOO (KR)
IHM BIN CHUL (KR)

International Classes:

H04B7/04

Foreign References:

US20080260062A1	2008-10-23
KR20070121589A	2007-12-27

Other References:

TAOKA. ET AL.: 'Optimum Reference Signal Structure for MIMO Multiplexing using Precoding in Evolved UTRA Downlink' MILITARY COMMUNICATIONS CONFERENCE, MILCOCOM 2007, [Online] 2007, pages 1 - 6 Retrieved from the Internet:

Attorney, Agent or Firm:

KIM, Yong In et al. (KR)
김용인 (KR)

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