US 11,838,091 B2
Method and apparatus for beam failure recovery in wireless communication system
Youngbum Kim, Suwon-si (KR); Younsun Kim, Suwon-si (KR); Hyunseok Ryu, Suwon-si (KR); Taehan Bae, Suwon-si (KR); and Youngrok Jang, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Jun. 3, 2022, as Appl. No. 17/832,130.
Claims priority of application No. 10-2021-0075445 (KR), filed on Jun. 10, 2021.
Prior Publication US 2022/0399928 A1, Dec. 15, 2022
Int. Cl. H04B 7/06 (2006.01); H04W 74/08 (2009.01); H04W 76/19 (2018.01); H04L 5/00 (2006.01); H04W 76/15 (2018.01); H04W 74/00 (2009.01); H04W 16/28 (2009.01); H04W 72/044 (2023.01); H04W 72/1273 (2023.01)
CPC H04B 7/0695 (2013.01) [H04W 72/044 (2013.01); H04W 72/1273 (2013.01); H04W 74/0841 (2013.01); H04W 74/0866 (2013.01); H04W 76/19 (2018.02)] 20 Claims
OG exemplary drawing
 
1. A method performed by a terminal configured with a carrier aggregation (CA) for a first cell and a second cell, the method comprising:
determining a beam failure of the first cell;
in response to the determining of the beam failure of the first cell, transmitting a first message of a random access for a beam failure recovery;
receiving a second message of the random access on a physical downlink shared channel (PDSCH) of the first cell based on the transmission of the first message;
transmitting a third message of the random access based on the second message; and
receiving a fourth message of the random access on the PDSCH of the first cell based on the transmission of the third message,
wherein control information for scheduling the second message and the fourth message is received on a physical downlink control channel (PDCCH) of the second cell.