US Patent No. 10,433,181

METHOD, DEVICE, AND SYSTEM FOR SIGNAL TRANSMISSION IN UNLICENSED BAND


Patent No. 10,433,181
Issue Date October 01, 2019
Title Method, Device, And System For Signal Transmission In Unlicensed Band
Inventorship Jinsam Kwak, Gyeonggi-do (KR)
Juhyung Son, Gyeonggi-do (KR)
Geonjung Ko, Gyeonggi-do (KR)
Minseok Noh, Seoul (KR)
Assignee WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., Gyeonggi-Do (KR)

Claim of US Patent No. 10,433,181

1. A method for performing downlink transmission in a specific cell by a base station in a cellular wireless communication system, the method comprising:when the downlink transmission includes a physical downlink shared channel (PDSCH) and a channel in which the downlink transmission is performed is sensed to be idle for a first predefined interval, performing backoff procedure after the first predefined interval to perform the downlink transmission; and
when the downlink transmission includes a Discovery Reference Signal (DRS) and does not include the PDSCH, and the channel in which the downlink transmission is performed is sensed to be idle for a second predefined interval, performing the downlink transmission immediately after the second predefined interval.