US 12,452,917 B2
Updating a contention window size
Karthikeyan Ganesan, Kronberg im Taunus (DE); Alexander Johann Maria Golitschek Edler von Elbwart, Darmstadt (DE); Ankit Bhamri, Rödermark (DE); Ali Ramadan Ali, Kraiburg am Inn (DE); Vijay Nangia, Woodridge, IL (US); and Ravi Kuchibhotla, Chicago, IL (US)
Assigned to Lenovo (Singapore) Pte. Ltd., Singapore (SG)
Appl. No. 17/996,913
Filed by Lenovo (Singapore) PTE. LTD., New Tech Park (SG)
PCT Filed Apr. 22, 2021, PCT No. PCT/IB2021/053339
§ 371(c)(1), (2) Date Oct. 21, 2022,
PCT Pub. No. WO2021/214709, PCT Pub. Date Oct. 28, 2021.
Claims priority of provisional application 63/014,029, filed on Apr. 22, 2020.
Prior Publication US 2023/0164835 A1, May 25, 2023
Int. Cl. H04W 74/08 (2024.01); H04W 74/0808 (2024.01)
CPC H04W 74/0808 (2013.01) 19 Claims
OG exemplary drawing
 
15. A method of a communication device, the method comprising:
initiating a first channel occupancy using at least one transmit panel in response to a successful listen-before-talk (LBT) procedure;
transmitting a directional transmission using a first transmit panel, the first transmit panel selected from a plurality of transmit panels;
determining whether the directional transmission was successfully received by a recipient;
updating a first contention window size (CWS) specific to the first transmit panel, wherein updating the first CWS comprises:
adjusting a first CWS to a next allowed value in response to determining that the directional transmission was not successfully received by the recipient, and
setting the first CWS to a minimum value in response to determining that the directional transmission was successfully received by the recipient, wherein a separate CWS is maintained for each transmit panel that initiated the first channel occupancy; and
performing a subsequent LBT procedure using the updated first CWS prior to a subsequent directional transmission using the first transmit panel.