US Patent No. 10,219,313

METHOD AND APPARATUS FOR CONTROLLING RANDOM ACCESS IN WIRELESS COMMUNICATION SYSTEM SUPPORTING CARRIER AGGREGATION


Patent No. 10,219,313
Issue Date February 26, 2019
Title Method And Apparatus For Controlling Random Access In Wireless Communication System Supporting Carrier Aggregation
Inventorship Kyeong In Jeong, Suwon-si (KR)
Gert-Jan Van Lieshout, Staines (GB)
Assignee Samsung Electronics Co., Ltd., Suwon-si (KR)

Claim of US Patent No. 10,219,313

1. A method in a wireless communication system, the method comprising:transmitting, by a terminal, a random access preamble on one of a primary cell or a secondary cell;
determining, by the terminal, that a number of transmissions of the random access preamble reaches a predetermined value;
detecting a random access problem based on the determining that the number of transmissions of the random access preamble reaches the predetermined value;
indicating, by the terminal, the random access problem to upper layers in response to the transmitting of the random access preamble being on the primary cell; and
stopping, by the terminal, a random access procedure in response to the transmitting of the random access preamble being on the secondary cell.