US 11,716,132 B2
Method and apparatus for beam failure detection regarding multiple transmission/reception points in a wireless communication system
Yi-Hsuan Kung, Taipei (TW); and Yu-Hsuan Guo, Taipei (TW)
Assigned to ASUSTek Computer Inc., Taipei (TW)
Filed by ASUSTek Computer Inc., Taipei (TW)
Filed on Sep. 3, 2021, as Appl. No. 17/465,979.
Claims priority of provisional application 63/077,118, filed on Sep. 11, 2020.
Prior Publication US 2022/0085862 A1, Mar. 17, 2022
Int. Cl. H04B 7/06 (2006.01); H04L 1/18 (2006.01); H04W 74/08 (2009.01); H04W 76/19 (2018.01); H04W 80/02 (2009.01); H04W 76/15 (2018.01); H04B 7/08 (2006.01); H04B 7/024 (2017.01); H04W 24/04 (2009.01); H04B 7/0408 (2017.01); H04W 16/28 (2009.01); H04L 1/1812 (2023.01)
CPC H04B 7/0695 (2013.01) [H04L 1/1819 (2013.01); H04W 74/0841 (2013.01); H04W 76/19 (2018.02); H04W 80/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of a User Equipment (UE), the method comprising:
maintaining a first counter associated with a first threshold and a second counter associated with a second threshold, wherein the first counter and the second counter are:
associated with a Special Cell (SpCell); and
for counting beam failure instance indications;
triggering a beam failure recovery (BFR) in response to the first counter being equal to or larger than the first threshold;
setting the first counter to a defined value and not setting the second counter to the defined value when the UE receives a Physical Downlink Control Channel (PDCCH), addressed to Cell Radio Network Temporary Identifier (C-RNTI), indicative of an uplink grant for a new transmission for a Hybrid Automatic Repeat Request (HARQ) process used for transmission of a BFR Medium Access Control (MAC) Control Element (CE);
initiating a random access procedure for SpCell BFR associated with the SpCell when the first counter is equal to or larger than the first threshold and the second counter is equal to or larger than the second threshold; and
setting the first counter and the second counter to the defined value in response to completion of the random access procedure.