US 12,081,302 B2
CSI measurement and feedback for EMTC-U system
Salvatore Talarico, Sunnyvale, CA (US); Huaning Niu, San Jose, CA (US); and Wenting Chang, Beijing (CN)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Sep. 19, 2022, as Appl. No. 17/947,390.
Application 17/947,390 is a division of application No. 16/133,208, filed on Sep. 17, 2018, granted, now 11,469,806.
Claims priority of provisional application 62/595,888, filed on Dec. 7, 2017.
Claims priority of provisional application 62/584,633, filed on Nov. 10, 2017.
Claims priority of provisional application 62/576,524, filed on Oct. 24, 2017.
Claims priority of provisional application 62/559,239, filed on Sep. 15, 2017.
Prior Publication US 2023/0023399 A1, Jan. 26, 2023
Int. Cl. H04B 1/713 (2011.01); H04B 7/06 (2006.01); H04L 5/00 (2006.01); H04L 27/00 (2006.01); H04W 16/14 (2009.01); H04W 24/10 (2009.01); H04L 25/02 (2006.01); H04W 4/70 (2018.01); H04W 74/0808 (2024.01); H04W 76/27 (2018.01)
CPC H04B 7/0626 (2013.01) [H04B 1/713 (2013.01); H04B 7/0632 (2013.01); H04L 5/001 (2013.01); H04L 5/0012 (2013.01); H04L 5/0048 (2013.01); H04L 5/0051 (2013.01); H04L 5/0057 (2013.01); H04L 27/0006 (2013.01); H04W 16/14 (2013.01); H04W 24/10 (2013.01); H04L 25/0228 (2013.01); H04W 4/70 (2018.02); H04W 74/0808 (2013.01); H04W 76/27 (2018.02)] 20 Claims
OG exemplary drawing
 
1. One or more non-transitory, computer-readable media comprising instructions that, when executed, cause a user equipment (UE) to:
generate a Sounding Reference Signal (SRS) for uplink (UL) channel estimation by a base station for communication in unlicensed spectrum,
wherein the communication is over a frame structure of a data dwell time comprising a downlink (DL) dwell time and a UL dwell time, wherein a DL transmission in the DL dwell time is to trigger an SRS transmission of the SRS within an available UL dwell time.