METHOD AND APPARATUS OF DOWNLINK SIGNALING FOR PARTIALLY PRECODED CSI-RS AND CSI FEEDBACK

Title:

METHOD AND APPARATUS OF DOWNLINK SIGNALING FOR PARTIALLY PRECODED CSI-RS AND CSI FEEDBACK

Document Type and Number:

WIPO Patent Application WO/2016/089124

Kind Code:

A1

Abstract:

The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). User equipment (UE) is configured to receive two types of channel state information (CSI) reference signals (CSI-RS), the first containing more antenna ports and measured less often than the second. A first CSI report is based on first type CSI-RS and a second CSI report on the second type CSI-RS. The second type CSI-RS is at least partially precoded in response to the first CSI report, is precoded for the specific UE, and is transmitted more often than the first type CSI-RS, while the first type CSI-RS is not precoded. The first CSI report contains a first precoding matrix indicator (PMI) parameter and the second CSI report contains only a second PMI parameter of a two-PMI codebook, where the first PMI parameter is a long-term and wideband PMI. The first PMI is derived from measuring the first type CSI-RS in a plurality of subframes and resource blocks.

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Inventors:

ONGGOSANUSI EKO (US)
NG BOON LOONG (US)
GHA HEE-DON (KR)
NAM YOUNG-HAN (US)

Application Number:

PCT/KR2015/013094

Publication Date:

June 09, 2016

Filing Date:

December 02, 2015

Export Citation:

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Assignee:

SAMSUNG ELECTRONICS CO LTD (KR)

International Classes:

H04B7/04; H04B7/06

Foreign References:

US20130148515A1	2013-06-13
US20130242773A1	2013-09-19
US20130267268A1	2013-10-10

Other References:

NVIDIA: "Performance of UE specific elevation beamforming using two NZP CSI-RS resources", R1-145015, 3GPP TSG-RAN WG1 #79, 8 November 2014 (2014-11-08), San Francisco, USA, XP050885665
SAMSUNG: "CSI Feedback Mechanism for Multiple Transmission Points", R1-114224, 3GPP TSG RAN WG1 #67, 9 November 2011 (2011-11-09), San Francisco, USA, XP050562325
See also references of EP 3228021A4

Attorney, Agent or Firm:

LEE, Keon-Joo et al. (16 Daehak-ro 9-gilChongro-gu, Seoul, KR)

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