US Patent No. 10,973,056

METHOD AND APPARATUS FOR SUPPORTING A SUPPLEMENTARY UPLINK FREQUENCY IN WIRELESS COMMUNICATION SYSTEM


Patent No. 10,973,056
Issue Date April 06, 2021
Title Method And Apparatus For Supporting A Supplementary Uplink Frequency In Wireless Communication System
Inventorship Jaehyuk Jang, Suwon-si (KR)
Sangbum Kim, Suwon-si (KR)
Donggun Kim, Seoul (KR)
Alexander Sayenko, Seoul (KR)
Seungri Jin, Suwon-si (KR)
Assignee Samsung Electronics Co., Ltd., Suwon-si (KR)

Claim of US Patent No. 10,973,056

1. A method for performing a random access by a terminal in a wireless communication system, the method comprising:receiving, from a base station (BS), random access configuration information;
selecting an uplink (UL) carrier or a supplementary uplink (SUL) carrier to perform a random access, based on the random access configuration information;
transmitting, to the BS, a first random access preamble on a selected uplink carrier of the UL carrier and the SUL carrier;
transmitting, to the BS, capability information of the terminal indicating whether the terminal supports switching between the UL carrier and the SUL carrier;
receiving, from the BS, downlink control information (DCI) to switch from the selected one of the UL carrier and the SUL carrier to the other of the UL carrier and the SUL carrier, the DCI being based on the capability information of the terminal; and
transmitting, to the BS, a second random access preamble on the other of the UL carrier and the SUL carrier, based on the DCI,
wherein the UL carrier and the SUL carrier are associated with one downlink carrier configured for the terminal.