US 12,089,253 B2
System and method for channel occupancy time (COT) sharing in an unlicensed spectrum
Jose Armando Oviedo, Santa Clara, CA (US); Yingyang Li, Santa Clara, CA (US); Salvatore Talarico, Sunnyvale, CA (US); and Yongjun Kwak, Portland, OR (US)
Assigned to Apple Inc., Cupertino, CA (US)
Appl. No. 17/430,847
Filed by Apple Inc., Cupertino, CA (US)
PCT Filed Feb. 16, 2020, PCT No. PCT/US2020/018471
§ 371(c)(1), (2) Date Aug. 13, 2021,
PCT Pub. No. WO2020/168320, PCT Pub. Date Aug. 20, 2020.
Claims priority of provisional application 62/806,199, filed on Feb. 15, 2019.
Prior Publication US 2022/0167407 A1, May 26, 2022
Int. Cl. H04W 74/08 (2024.01); H04W 72/04 (2023.01); H04W 72/0446 (2023.01); H04W 74/00 (2009.01); H04W 74/0816 (2024.01)
CPC H04W 74/0816 (2013.01) [H04W 72/0446 (2013.01); H04W 74/004 (2013.01); H04W 74/006 (2013.01); H04W 74/0866 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A user equipment (UE), comprising:
radio front end circuitry; and
processor circuitry coupled to the radio front end circuitry and configured to:
contend for access to a channel in an unlicensed spectrum;
acquire a shared channel occupancy time (COT);
transmit, using the radio front end circuitry, data in the shared COT;
transmit, using the radio front end circuitry, an indication of a COT sharing boundary; and
receive a downlink control information (DCI) signal comprising a first set of Physical Downlink Control Channel (PDCCH) occasions of a common CORESET search space (CSS), wherein the common CSS informs the UE and a second UE of a structure of downlink (DL) transmissions based at least on the COT sharing boundary and a second COT sharing boundary of the second UE.