US Patent No. 11,071,095

LAYER 1 AND LAYER 2 CHANNEL STATE INFORMATION RICH REPORTING MECHANISMS


Patent No. 11,071,095
Issue Date July 20, 2021
Title Layer 1 And Layer 2 Channel State Information Rich Reporting Mechanisms
Inventorship Robert Mark Harrison, Grapevine, TX (US)
Shiwei Gao, Nepean (CA)
Stephen Grant, Pleasanton, CA (US)
Siva Muruganathan, Stittsville (CA)
Assignee TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)

Claim of US Patent No. 11,071,095


1. A method in a user equipment of reporting multi-beam channel state information, CSI, in uplink control information, UCI, the method including:providing an indication of a plurality of beam index pairs in the UCI in a first transmission, each beam index pair corresponding to a beam k;
providing an indication of at least one of a beam power, a beam rotation and a channel quality index, CQI, in the UCI in a second transmission; and
a beam power pk of a beam k is a real number such that a cophasing factor ck can be expressed ck=c?kpk, where |c?k|2=1 and at least one of beam rotations r1 and r2 are real numbers such that beam directions for beam k, ?1,k and ?2,k can be expressed as ?1,k=??1,k+r1 and ?2,k=??2,k+r2.