US 11,943,802 B2
Techniques for node directed uplink (UL) cancellation and channel access in unlicensed bands
Oghenekome Oteri, San Diego, CA (US); Weidong Yang, San Diego, CA (US); Sigen Ye, Whitehouse Station, NJ (US); Haitong Sun, Cupertino, CA (US); Chunhai Yao, Beijing (CN); Yushu Zhang, Beijing (CN); Dawei Zhang, Saratoga, CA (US); Chunxuan Ye, San Diego, CA (US); Wei Zeng, Saratoga, CA (US); and Hong He, San Jose, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Appl. No. 17/593,750
Filed by Apple Inc., Cupertino, CA (US)
PCT Filed Aug. 5, 2020, PCT No. PCT/CN2020/107024
§ 371(c)(1), (2) Date Sep. 23, 2021,
PCT Pub. No. WO2022/027290, PCT Pub. Date Feb. 10, 2022.
Prior Publication US 2023/0156771 A1, May 18, 2023
Int. Cl. H04W 72/56 (2023.01); H04W 16/14 (2009.01); H04W 72/1268 (2023.01); H04W 74/0808 (2024.01)
CPC H04W 72/56 (2023.01) [H04W 16/14 (2013.01); H04W 72/1268 (2013.01); H04W 74/0808 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for communications in a wireless system, comprising:
receiving, from a first user device, cancellation capability information;
receiving, from a second user device, unlicensed frequency transmission capability information;
receiving, from the first user device, an uplink transmission over an unlicensed frequency band;
determining, a need for a higher priority uplink transmission by the second user device;
scheduling an uplink cancellation time for the first user device based on the cancellation capability information and the unlicensed frequency transmission capability information;
scheduling an uplink transmission time for the second user device based on the cancellation capability information and the unlicensed frequency transmission capability information;
transmitting an uplink cancellation request to the first user device based on the scheduled uplink cancellation time; and
transmitting an uplink transmission time for the higher priority uplink transmission to the second user device based on the scheduled uplink transmission time.