US 11,870,567 B2
Method and apparatus for channel state information feedback in communication system
Jung Bin Kim, Daejeon (KR); and Dong Hyun Jung, Daejeon (KR)
Assigned to ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR)
Filed by Electronics and Telecommunications Research Institute, Daejeon (KR)
Filed on Aug. 23, 2021, as Appl. No. 17/409,088.
Claims priority of application No. 10-2020-0106541 (KR), filed on Aug. 24, 2020; and application No. 10-2021-0108867 (KR), filed on Aug. 18, 2021.
Prior Publication US 2022/0321250 A1, Oct. 6, 2022
Int. Cl. H04L 1/00 (2006.01); H04B 7/06 (2006.01)
CPC H04L 1/0016 (2013.01) [H04B 7/0626 (2013.01); H04L 1/0026 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An operation method of a base station in a communication system, the operation method comprising:
transmitting first indication information to a terminal, the first indication information indicating use of a first channel quality information (CQI) table among CQI tables;
transmitting a first reference signal to the terminal; and
receiving first channel state information (CSI) from the terminal, the first CSI including a first CQI index selected within the first CQI table based on the first reference signal,
wherein the CQI tables include the first CQI table and a second CQI table, and a spectral efficiency indicated by at least one CQI index within the first CQI table is identical to a spectral efficiency indicated by at least one CQI index within the second CQI table, and
wherein the first indication information further includes triggering information indicating scheme of changing a CQI table used for CSI reporting.