METHOD AND APPARATUS FOR TRANSMITTING DOWNLINK REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM THAT SUPPORTS MULTIPLE ANTENNAS

Title:

METHOD AND APPARATUS FOR TRANSMITTING DOWNLINK REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM THAT SUPPORTS MULTIPLE ANTENNAS

Document Type and Number:

WIPO Patent Application WO/2011/019228

Kind Code:

A2

Abstract:

The present invention relates to a wireless communication system, and in particular, to a method and an apparatus for transmitting a downlink reference signal in a wireless communication system that supports multiple antennas. The method for transmitting a channel status information reference signal for a maximum of eight antenna ports according to one embodiment of the present invention comprises: in a base station, mapping the channel status information reference signal for a maximum of eight antenna ports onto a data region of a downlink subframe having a general cyclic prefix (CP) configuration, according to a preset pattern; and in the base station, transmitting the downlink subframe into which the channel status reference signal for the maximum of eight antenna ports has been mapped, wherein the preset pattern defines the channel status information reference signal for the maximum of eight antenna ports to be mapped onto two OFDM symbols of the data region in the downlink subframe and then mapped to at least one of four subcarrier positions in each of the two OFDM symbols, and wherein the four subcarrier positions defined by the preset pattern may be two consecutive subcarrier positions and two other consecutive subcarrier positions spaced apart by four subcarriers.

Inventors:

KO HYUN SOO (KR)
HAN SEUNG HEE (KR)
CHUNG JAE HOON (KR)
IHM BIN CHUL (KR)
LEE MOON IL (KR)

Application Number:

PCT/KR2010/005319

Publication Date:

February 17, 2011

Filing Date:

August 13, 2010

Export Citation:

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Assignee:

LG ELECTRONICS INC (KR)
KO HYUN SOO (KR)
HAN SEUNG HEE (KR)
CHUNG JAE HOON (KR)
IHM BIN CHUL (KR)
LEE MOON IL (KR)

International Classes:

H04L27/26; H04J11/00

Domestic Patent References:

WO2007117127A1	2007-10-18
WO2009035246A2	2009-03-19

Foreign References:

KR20080036939A	2008-04-29
KR20060040180A	2006-05-10
KR20070046976A	2007-05-03

Other References:

None

Attorney, Agent or Firm:

KIM, Yong In et al. (KR)
김용인 (KR)

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