Title:
METHOD FOR ESTIMATING CHANNEL STATUS IN WIRELESS COMMUNICATION SYSTEM, AND APPARATUS THEREFOR
Document Type and Number:
WIPO Patent Application WO/2016/111524
Kind Code:
A1
Abstract:
A method for estimating a channel status by a base station in a wireless communication system according to an embodiment of the present invention comprises the steps of: obtaining an uplink channel matrix by using a sounding reference signal (SRS) received from a terminal; transmitting a channel state information-reference signal (CSI-RS) through at least some antenna devices in a two-dimensional antenna array of the base station; receiving a channel quality indicator (CQI) calculated on the basis of the CSI-RS transmission; and obtaining, through a predetermined correction factor obtained on the basis of the CQI and the uplink channel matrix, a downlink channel matrix for the entire two-dimensional antenna array comprising the remaining antenna devices through which the CSI-RS is not transmitted.
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Inventors:
KIM BONGHOE (KR)
KIM KIJUN (KR)
KIM HYUNGTAE (KR)
PARK JONGHYUN (KR)
KIM KIJUN (KR)
KIM HYUNGTAE (KR)
PARK JONGHYUN (KR)
Application Number:
PCT/KR2016/000056
Publication Date:
July 14, 2016
Filing Date:
January 05, 2016
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H04L25/02; H04B7/06; H04L5/00
Foreign References:
| KR20140058976A | 2014-05-15 | |||
| US20090054093A1 | 2009-02-26 | |||
| US20140334325A1 | 2014-11-13 |
Other References:
CATT: "Discussion on Potential Standardized Enhancements Targeting 2D Antenna Array", R1-144632, 3GPP TSG RAN WG1 MEETING #79, 8 November 2014 (2014-11-08), San Francisco, USA, pages 1 - 3
DEUTSCHE TELEKOM AG. ET AL.: "Coordinated Link Adaptation based on Multi- Cell Channel Estimation in the LTE-A Uplink", R1-095067, 3GPP TSG RAN WG1 MEETING #59, 13 November 2009 (2009-11-13), Jeju, South Korea, pages 1 - 2
DEUTSCHE TELEKOM AG. ET AL.: "Coordinated Link Adaptation based on Multi- Cell Channel Estimation in the LTE-A Uplink", R1-095067, 3GPP TSG RAN WG1 MEETING #59, 13 November 2009 (2009-11-13), Jeju, South Korea, pages 1 - 2
Attorney, Agent or Firm:
KIM, Yong In et al. (KR)
김용인 (KR)
김용인 (KR)
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