US Patent No. 10,772,125


Patent No. 10,772,125
Issue Date September 08, 2020
Title Systems And Methods For A Spatial Listen-before-talk Protocol
Inventorship Yisheng Xue, San Diego, CA (US)
Qingsi Wang, Bellevue, WA (US)
Siddhartha Mallik, San Diego, CA (US)
Weiliang Zeng, San Diego, CA (US)
Ahmed Sadek, San Diego, CA (US)
Assignee QUALCOMM Incorporated, San Diego, CA (US)

Claim of US Patent No. 10,772,125

1. A method for wireless communication at a transmitting network device in a listen-before-talk (LBT) session, comprising:determining multiple input multiple output (MIMO) configuration information for the transmitting network device, wherein the determining comprises determining for the LBT session at least: whether the MIMO configuration information is available; and
if the MIMO configuration information is available, at least one of: a MIMO rank, a number of transmit antennas, a number of receive antennas, a transmit beamforming (TxBF) matrix, or a receive beamforming (RxBF) matrix;
performing a contention-based access protocol procedure to determine whether a wireless transmission channel is clear for transmitting data to a target network device, based on the determined MIMO configuration information, wherein performing the contention-based access protocol procedure comprises adaptive performing of a spatial LBT procedure, based on the MIMO configuration information; and
transmitting a broadcast message, prior to transmitting data to the target network device, the broadcast message including at least part of the MIMO configuration information, when the contention-based access protocol procedure indicates that the wireless transmission channel is clear.