US Patent No. 10,368,301

MULTI-BEAM AND SINGLE-BEAM DISCOVERY REFERENCE SIGNALS FOR SHARED SPECTRUM


Patent No. 10,368,301
Issue Date July 30, 2019
Title Multi-beam And Single-beam Discovery Reference Signals For Shared Spectrum
Inventorship Arumugam Chendamarai Kannan, San Diego, CA (US)
Chirag Patel, San Diego, CA (US)
Tamer Kadous, San Diego, CA (US)
Assignee QUALCOMM Incorporated, San Diego, CA (US)

Claim of US Patent No. 10,368,301

22. An apparatus for wireless communications, comprising:a processor;
memory in electronic communication with the processor; and
instructions stored in the memory, wherein the instructions are executable by the processor to:
determine multiple transmission beams for transmission of a discovery reference signal (DRS) over a shared radio frequency spectrum band;
perform a first listen before talk (LBT) procedure for the DRS based at least in part on the multiple transmission beams;
transmit, based at least in part on the first LBT procedure, the DRS over the shared radio frequency spectrum band using a set of the multiple transmission beams;
perform an opportunistic beam-specific second LBT procedure for a first beam of the multiple transmission beams; and
transmit an opportunistic DRS on the first beam based at least in part on a success of the opportunistic beam-specific second LBT procedure for the first beam.