US 12,245,288 B2
Method for receiving downlink signal on basis of random-access channel procedure in unlicensed band, and device therefor
Jeongsu Lee, Seoul (KR); Sukhyon Yoon, Seoul (KR); Hyunsoo Ko, Seoul (KR); Suckchel Yang, Seoul (KR); Seonwook Kim, Seoul (KR); Youngdae Lee, Seoul (KR); and Seokmin Shin, Seoul (KR)
Assigned to LG Electronics, Inc., Seoul (KR)
Appl. No. 17/764,033
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Sep. 25, 2020, PCT No. PCT/KR2020/013073
§ 371(c)(1), (2) Date Mar. 25, 2022,
PCT Pub. No. WO2021/060915, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 10-2019-0118401 (KR), filed on Sep. 25, 2019; and application No. 10-2019-0120137 (KR), filed on Sep. 27, 2019.
Prior Publication US 2023/0269777 A1, Aug. 24, 2023
Int. Cl. H04W 52/14 (2009.01); H04W 16/14 (2009.01); H04W 74/0833 (2024.01); H04W 76/28 (2018.01)
CPC H04W 74/0833 (2013.01) [H04W 16/14 (2013.01); H04W 76/28 (2018.02)] 13 Claims
OG exemplary drawing
 
1. A method of receiving a downlink signal on an unlicensed band by a user equipment based on a Random Access Channel (RACH) procedure, the method comprising:
configuring a transmission power for a message A including a first Physical Random Access Channel (PRACH) and a first Physical Uplink Shared Channel (PUSCH) based on a power ramping counter;
transmitting, to a base station, the message A based on the transmission power;
receiving, from the base station, a message B related to contention resolution in response to the message A;
receiving, from the base station, information about at least one Discontinuous Reception (DRX) timer for a DRX operation; and
receiving, from the base station, the downlink signal during on-duration based on the at least one DRX timer,
wherein a value of the power ramping counter increases based on that a transmission spatial beam for the transmission of the message A is configured identical to a transmission spatial beam related to transmission of a PRACH before the message A.