US 11,876,581 B2
CSI reporting on small control channels
Sebastian Faxér, Stockholm (SE); Shiwei Gao, Nepean (CA); Robert M Harrison, Grapevine, TX (US); and Siva Muruganathan, Stittsville (CA)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed on Jan. 11, 2022, as Appl. No. 17/573,171.
Application 17/573,171 is a continuation of application No. 16/483,822, granted, now 11,271,616, previously published as PCT/IB2017/058321, filed on Dec. 21, 2017.
Claims priority of provisional application 62/455,440, filed on Feb. 6, 2017.
Prior Publication US 2022/0158697 A1, May 19, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 5/00 (2006.01); H04B 7/0417 (2017.01); H04B 7/0456 (2017.01); H04B 7/06 (2006.01)
CPC H04B 7/0417 (2013.01) [H04B 7/0478 (2013.01); H04B 7/0486 (2013.01); H04B 7/065 (2013.01); H04B 7/0626 (2013.01); H04B 7/0639 (2013.01); H04B 7/0658 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of operation of a second node connected to a first node in a wireless communication network, comprising:
reporting Channel State Information, CSI, feedback to the first node on a physical channel by:
identifying a subset of codebook entries from an advanced CSI codebook of coefficients by subsampling an index corresponding to a subband codebook W2;
selecting a codebook entry from the subset of codebook entries; and
reporting an index of the selected codebook entry from the subset of codebook entries.