US 12,192,126 B2
Method for uplink channel access to unlicensed band in wireless communication system, and device therefor
Minseok Noh, Gyeonggi-do (KR); Jinsam Kwak, Gyeonggi-do (KR); and Juhyung Son, Gyeonggi-do (KR)
Assigned to WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., Gyeonggi-Do (KR)
Filed by WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., Gyeonggi-do (KR)
Filed on Aug. 15, 2023, as Appl. No. 18/233,884.
Application 18/233,884 is a continuation of application No. 17/712,071, filed on Apr. 2, 2022.
Application 17/712,071 is a continuation of application No. 16/929,058, filed on Jul. 14, 2020, granted, now 11,330,609, issued on May 10, 2022.
Application 16/929,058 is a continuation of application No. 16/138,927, filed on Sep. 21, 2018, granted, now 10,757,717, issued on Aug. 25, 2020.
Application 16/138,927 is a continuation of application No. PCT/KR2017/003084, filed on Mar. 22, 2017.
Claims priority of application No. 10-2016-0034934 (KR), filed on Mar. 23, 2016; application No. 10-2016-0039811 (KR), filed on Mar. 31, 2016; and application No. 10-2016-0059131 (KR), filed on May 13, 2016.
Prior Publication US 2023/0388067 A1, Nov. 30, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 72/23 (2023.01); H04L 5/00 (2006.01); H04L 27/26 (2006.01); H04W 16/14 (2009.01); H04W 72/0446 (2023.01); H04W 72/0453 (2023.01); H04W 72/12 (2023.01); H04W 74/0808 (2024.01)
CPC H04L 5/001 (2013.01) [H04L 5/0053 (2013.01); H04L 5/0094 (2013.01); H04L 27/2602 (2013.01); H04W 16/14 (2013.01); H04W 72/0446 (2013.01); H04W 72/0453 (2013.01); H04W 72/1215 (2013.01); H04W 72/23 (2023.01); H04W 74/0808 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for operating a first station in a wireless communication system, the method comprising:
receiving, from a second station, a grant for a second transmission to the second station in at least one subframe through an unlicensed cell;
determining a channel access type for performing the second transmission among a first type channel access and a second type channel access according to a predetermined interval determined based on a first transmission through the unlicensed cell from the second station, wherein the first type channel access is based on a channel sensing with a random backoff using a CW (contention window) of variable size before data transmission, wherein a maximum value of CW and a minimum value of CW is determined according to a channel access priority class of the second transmission, wherein the second type channel access is based on a channel sensing with a single interval before data transmission; and
performing the second transmission in the at least one subframe using the determined channel access type,
wherein the second transmission is performed using the second type channel access when all of the second transmission is included in the predetermined interval.