Title:
PRECODING FOR ADVANCED WIRELESS COMMUNICATION SYSTEMS
Document Type and Number:
WIPO Patent Application WO/2019/212301
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). According to various embodiments, Base station (BS) capable of beamforming in a wireless communication includes a transceiver comprising an antenna array, the transceiver configured to measure SRS from a UE, using at least one portion of the antenna array, and a processor configured to select at least one UL beam vector based on an SRS measurement from a UL beam-codebook comprising a set of beam weight vectors, determine at least one DL beam weight vector corresponding to each of the selected at least one UL beam weight vector, transmit a beamformed CSI- RS by applying the at least one DL beam weight vector to the antenna array, receive a CSI feedback including a PMI from the UE, wherein the PMI is determined based on the beamformed CSI-RS, and construct a precoding channel matrix for the UE based on the PMI and the at least one DL beam weight vector.
Inventors:
IBRAHIM AHMED (US)
KIM EUNYONG (KR)
ZHANG JIANZHONG (US)
HU YEQING (US)
NAM YOUNGHAN (US)
KIM EUNYONG (KR)
ZHANG JIANZHONG (US)
HU YEQING (US)
NAM YOUNGHAN (US)
Application Number:
PCT/KR2019/005358
Publication Date:
November 07, 2019
Filing Date:
May 03, 2019
Export Citation:
Assignee:
SAMSUNG ELECTRONICS CO LTD (KR)
International Classes:
H04B7/0456; H04B7/0417; H04B7/06
Foreign References:
| US20170047975A1 | 2017-02-16 | |||
| US20120320874A1 | 2012-12-20 | |||
| US20170237478A1 | 2017-08-17 |
Other References:
NTT DOCOMO: "CSI Feedback Type 1 for NR MIMO", 3GPP TSG RAN WG1 MEETING #89, R1-1708456,, 6 May 2017 (2017-05-06), Hangzhou, P.R. China, XP051262462
ZTE: "On reciprocity based CSI acquisition", 3GPP TSG RAN WG1 MEETING #89, R1-1707125,, 7 May 2017 (2017-05-07), Hangzhou, China, XP051262913
See also references of EP 3750253A4
ZTE: "On reciprocity based CSI acquisition", 3GPP TSG RAN WG1 MEETING #89, R1-1707125,, 7 May 2017 (2017-05-07), Hangzhou, China, XP051262913
See also references of EP 3750253A4
Attorney, Agent or Firm:
KWON, Hyuk-Rok et al. (KR)
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