US 12,089,262 B2
Method and apparatus for multiple concurrent random access procedures
Ebrahim MolavianJazi, Santa Clara, CA (US); Aristides Papasakellariou, Houston, TX (US); Jeongho Jeon, San Jose, CA (US); Joonyoung Cho, Portland, OR (US); and Emad N. Farag, Flanders, NJ (US)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Dec. 14, 2021, as Appl. No. 17/644,306.
Claims priority of provisional application 63/126,251, filed on Dec. 16, 2020.
Prior Publication US 2022/0191940 A1, Jun. 16, 2022
Int. Cl. H04W 74/0833 (2024.01); H04B 17/318 (2015.01); H04W 52/36 (2009.01)
CPC H04W 74/0833 (2013.01) [H04B 17/318 (2015.01); H04W 52/36 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method performed by a user equipment (UE), the method comprising:
receiving a first configuration for a first random access (RA) procedure on a first cell;
receiving a second configuration for a second RA procedure on a second cell;
initiating the first RA procedure on the first cell based on the first configuration;
initiating the second RA procedure on the second cell prior to completion of the first RA procedure; and
scaling a power for a first transmission, when the first transmission has a gap with a second transmission that is smaller than a threshold, wherein:
the first transmission is for a first physical random access channel (PRACH), on the first cell, associated with the first RA procedure,
the second transmission is for a second PRACH, on the second cell, associated with the second RA procedure,
a total power of the first transmission and the second transmission prior to the scaling would exceed a configured maximum output power, and
a total power of the first transmission and of the second transmission after the scaling does not exceed the configured maximum output power.