US Patent No. 10,342,043

COUPLING UPLINK AND DOWNLINK CCA IN LTE-U


Patent No. 10,342,043
Issue Date July 02, 2019
Title Coupling Uplink And Downlink Cca In Lte-u
Inventorship Naga Bhushan, San Diego, CA (US)
Aleksandar Damnjanovic, Del Mar, CA (US)
Tingfang Ji, San Diego, CA (US)
Peter Gaal, San Diego, CA (US)
Durga Prasad Malladi, San Diego, CA (US)
Assignee QUALCOMM Incorporated, San Diego, CA (US)

Claim of US Patent No. 10,342,043

1. A method for wireless communication, comprising:identifying, by a first user equipment (UE) associated with a first base station, a time period during which at least the first base station and a second base station perform a contention-based downlink channel access procedure for access to a channel in an unlicensed spectrum;
determining that the first base station has won downlink channel access; and
modifying a contention-based uplink channel access procedure for the first UE associated with the first base station by modifying a mapping function for determining clear channel assessment (CCA) intervals of a plurality of UEs including the first UE to favor the first UE gaining access to the channel in the unlicensed spectrum, the modifying the mapping function being based at least in part on the determining that the first base station has won downlink channel access.