US Patent No. 10,716,149

METHOD AND APPARATUS FOR PERFORMING RANDOM ACCESS PROCEDURE


Patent No. 10,716,149
Issue Date July 14, 2020
Title Method And Apparatus For Performing Random Access Procedure
Inventorship Joonkui Ahn, Seoul (KR)
Kijun Kim, Seoul (KR)
Byounghoon Kim, Seoul (KR)
Suckchel Yang, Seoul (KR)
Hanjun Park, Seoul (KR)
Yunjung Yi, Seoul (KR)
Seonwook Kim, Seoul (KR)
Assignee LG ELECTRONICS INC., Seoul (KR)

Claim of US Patent No. 10,716,149

1. A method for performing a random access procedure in an unlicensed band, the method comprising:performing, by a wireless device, a clear channel assessment (CCA) during a random access preamble (RAP) window in the unlicensed band; and
transmitting, by the wireless device, a plurality of RAPs if the CCA is successful,
wherein the plurality of RAPs are repeatedly transmitted in a frequency domain or a time domain, and
wherein the plurality of RAPs include a first RAP transmitted in a first frequency band within the unlicensed band and a second RAP transmitted in a second frequency band within the unlicensed band, and the first RAP and the second RAP are transmitted at a same time point.