US 12,328,760 B2
Directional channel access sensing
Umer Salim, Zhejiang (CN)
Assigned to TCL COMMUNI CATI ON ( NINGBO) CO., LTD., Zhejiang (CN)
Appl. No. 18/001,059
Filed by TCL COMMUNICATION (NINGBO) CO., LTD., Zhejiang (CN)
PCT Filed May 7, 2021, PCT No. PCT/CN2021/092176
§ 371(c)(1), (2) Date Dec. 7, 2022,
PCT Pub. No. WO2021/227956, PCT Pub. Date Nov. 18, 2021.
Claims priority of provisional application 63/025,065, filed on May 14, 2020.
Prior Publication US 2023/0209597 A1, Jun. 29, 2023
Int. Cl. H04W 74/0808 (2024.01)
CPC H04W 74/0808 (2013.01) 18 Claims
OG exemplary drawing
 
1. A method of channel sensing performed by a first radio station in a cellular communications network, the first radio station being capable of beam-forming transmissions, wherein the method comprises the steps of
at the first radio station performing a first channel sensing process prior to a transmission,
wherein a successful first channel sensing process acquires a transmission channel for a channel occupancy time, the first channel sensing process being selected from an omni-directional and a directional channel sensing process;
transmitting first signals from the first radio station to a second radio station utilising the transmission channel;
prior to expiry of the channel occupancy time, at the first radio station performing a second channel sensing process,
wherein the second channel sensing process is performed in a direction of a new beam on which the first radio station intends to transmit,
wherein the first and/or second channel sensing process uses a deterministic duration,
wherein the deterministic duration is dependent on a gap between transmissions on a beam which will be used if the first channel sensing process acquires the transmission channel; and
after the second channel sensing process is successful, transmitting second signals from the first radio station to the second radio station utilising the new beam.