US 11,943,029 B2
Method for reporting channel state information in wireless communication system, and device therefor
Haewook Park, Seoul (KR); Hyungtae Kim, Seoul (KR); Jiwon Kang, Seoul (KR); and Kijun Kim, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Nov. 16, 2021, as Appl. No. 17/527,411.
Application 17/527,411 is a continuation of application No. 16/065,057, granted, now 11,201,653, previously published as PCT/KR2018/000345, filed on Jan. 8, 2018.
Claims priority of provisional application 62/475,188, filed on Mar. 22, 2017.
Claims priority of provisional application 62/444,309, filed on Jan. 9, 2017.
Prior Publication US 2022/0149910 A1, May 12, 2022
Int. Cl. H04B 7/06 (2006.01); H04L 27/18 (2006.01); H04W 24/08 (2009.01)
CPC H04B 7/0626 (2013.01) [H04L 27/18 (2013.01); H04W 24/08 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method performed by a terminal in a wireless communication system, the method comprising:
receiving, from a base station, codebook configuration information including information related to a multi-panel codebook,
wherein, based on the information related to the multi-panel codebook, (i) a number of a plurality of panels, (ii) a number of a first antenna ports within a first domain of each of the plurality of panels, and (iii) a number of a second antenna ports within a second domain of each of the plurality of panels are configured;
receiving, from the base station, a Channel State Information (CSI)-Reference Signal (RS),
wherein a number of CSI-RS ports related to the CSI-RS is based on a product of the number of the plurality of panels, the number of the first antenna ports, and the number of the second antenna ports; and
reporting, to the base station, CSI that is computed based on the CSI-RS,
wherein reporting the CSI related to a Precoding Matrix Indicator (PMI) comprises:
reporting first information related to the PMI for wideband; and
reporting second information related to the PMI for each subband,
wherein the first information related to the PMI for wideband includes first fields and a bitwidth of each of the first fields is 2,
wherein the second information related to the PMI for each subband includes second fields and a bitwidth of each of the second fields is 1,
wherein the first fields and the second fields are used for phase compensation for the plurality of panels, and
wherein the phase compensation for the plurality of panels is applied by compensating for a phase difference between a reference panel, which is one of the plurality of panels, and each of the panels other than the reference panel.