US 11,817,928 B2
Method and apparatus for channel estimation for OFDM based single carrier system
Hyoungju Ji, Suwon-si (KR); Juho Lee, Suwon-si (KR); Younsun Kim, Suwon-si (KR); and Hoondong Noh, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Oct. 29, 2020, as Appl. No. 17/083,853.
Claims priority of application No. 10-2019-0135729 (KR), filed on Oct. 29, 2019.
Prior Publication US 2021/0126688 A1, Apr. 29, 2021
Int. Cl. H04B 7/06 (2006.01); H04L 5/00 (2006.01); H04L 25/02 (2006.01)
CPC H04B 7/0626 (2013.01) [H04L 5/0092 (2013.01); H04L 25/022 (2013.01); H04L 25/0212 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method performed by a terminal in a communication system, the method comprising:
receiving, from a base station, information on a first channel state information (CSI) resource corresponding to a first frequency band and information on a second CSI resource corresponding to a second frequency band, wherein at least part of the second frequency band is different from the first frequency band;
receiving, from the base station, a CSI related signal on the first CSI resource corresponding to the first frequency band;
identifying the first CSI resource corresponding to the first frequency band in which the CSI related signal is received, and second CSI resource corresponding to the second frequency band in which the CSI related signal is not received;
obtaining CSI for the second frequency band based on the first CSI resource and the second CSI resource; and
transmitting, to the base station, the CSI for the second frequency band,
wherein the CSI related signal is transmitted on a plurality of symbols, and
wherein the CSI for the second frequency band is obtained in case that a number of non-zero elements of a channel impulse response (CIR) of the CSI related signal received on at least part of the plurality of symbols is less than a predetermined value.