US 12,193,007 B2
Method for terminal to access channel in unlicensed band and device using same method
Sechang Myung, Seoul (KR); Seonwook Kim, Seoul (KR); Changhwan Park, Seoul (KR); Joonkui Ahn, Seoul (KR); and Suckchel Yang, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/278,254
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Sep. 23, 2019, PCT No. PCT/KR2019/012344
§ 371(c)(1), (2) Date Mar. 19, 2021,
PCT Pub. No. WO2020/060361, PCT Pub. Date Mar. 26, 2020.
Claims priority of application No. 10-2018-0114453 (KR), filed on Sep. 21, 2018; application No. 10-2018-0115393 (KR), filed on Sep. 27, 2018; application No. 10-2019-0036179 (KR), filed on Mar. 28, 2019; and application No. 10-2019-0051851 (KR), filed on May 2, 2019.
Prior Publication US 2021/0360673 A1, Nov. 18, 2021
Int. Cl. H04W 72/21 (2023.01); H04L 1/18 (2023.01); H04L 1/1822 (2023.01); H04L 1/1829 (2023.01); H04L 5/00 (2006.01); H04W 72/23 (2023.01)
CPC H04W 72/21 (2023.01) [H04L 1/18 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method of adjusting a contention window size of a user equipment (UE) in a wireless communication system, the method comprising:
transmitting code block groups (CBGs) through a physical uplink shared channel (PUSCH);
receiving downlink control information (DCI) including a new data indicator (NDI) and a code block group transmission information (CBGTI) field; and
adjusting the contention window size,
wherein, based on that the NDI has not been toggled, ACK/NACK information for the CBGs is provided by the CBGTI field indicating at least one CBG to be retransmitted among the CBGs and the contention window size is adjusted based on the ACK/NACK information,
wherein, based on that the NDI has been toggled, the contention window size is set to a minimum contention window size for a priority class,
wherein the ACK/NACK information corresponds to the PUSCH in a reference time resource for a channel occupancy, and
wherein the reference time resource is a duration of a first transmission burst by the UE within the channel occupancy that contains the PUSCH.