US Patent No. 10,972,989

METHOD, USER EQUIPMENT AND BASE STATION FOR TRANSMITTING UPLINK SIGNALS


Patent No. 10,972,989
Issue Date April 06, 2021
Title Method, User Equipment And Base Station For Transmitting Uplink Signals
Inventorship Yi Wang, Beijing (CN)
Shichang Zhang, Beijing (CN)
Yingyang Li, Beijing (CN)
Chengjun Sun, Beijing (CN)
Jingxing Fu, Beijing (CN)
Assignee Samsung Electronics Co., Ltd., Suwon-si (KR)

Claim of US Patent No. 10,972,989

1. A method performed by a terminal for a random access procedure in unlicensed frequency bands, the method comprising:receiving, from a base station, uplink synchronization command subframe n for initiating the random access procedure, the uplink synchronization command including resource allocation information on uplink carriers associated with a timing advance group (TAG);
identifying an uplink resource based on the resource allocation information; and
transmitting, to the base station, a random access preamble in an idle subframe of the uplink resource after subframe n+k on at least one of the uplink carriers, the k being a predetermined value.