US 12,396,030 B2
Method, device, and system for channel access in unlicensed band
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 Apr. 27, 2024, as Appl. No. 18/648,337.
Application 18/648,337 is a continuation of application No. 17/315,188, filed on May 7, 2021, granted, now 12,028,897.
Application 17/315,188 is a continuation of application No. 16/787,016, filed on Feb. 11, 2020, granted, now 11,044,752, issued on Jun. 22, 2021.
Application 16/787,016 is a continuation of application No. PCT/KR2018/009295, filed on Aug. 13, 2018.
Claims priority of application No. 10-2017-0102681 (KR), filed on Aug. 12, 2017; application No. 10-2017-0128598 (KR), filed on Oct. 6, 2017; application No. 10-2017-0129706 (KR), filed on Oct. 11, 2017; and application No. 10-2018-0040659 (KR), filed on Apr. 6, 2018.
Prior Publication US 2024/0324007 A1, Sep. 26, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 74/0808 (2024.01); H04L 5/00 (2006.01); H04W 74/00 (2009.01); H04W 76/11 (2018.01)
CPC H04W 74/0808 (2013.01) [H04L 5/0082 (2013.01); H04W 74/006 (2013.01); H04W 76/11 (2018.02)] 20 Claims
OG exemplary drawing
 
1. A terminal configured to operate in a wireless communication system, the terminal comprising:
a processor,
wherein the processor is configured to:
perform, in an unlicensed band, a first type channel access, which is a channel access based on a random backoff, for an autonomous transmission when a predetermined condition is not satisfied, wherein the terminal, in the first type channel access, sets an initial value of backoff counter to a random value obtained within a contention window,
perform, in the unlicensed band, a second type channel access, in which a channel sensing during a predetermined single time interval without backoff is performed, for the autonomous transmission when the predetermined condition is satisfied, and
perform, in the unlicensed band, the autonomous transmission based on a result of the first type channel access or a result of the second type channel access,
wherein the autonomous transmission on a resource configured by a radio resource control (RRC) signaling is performed by the terminal without a scheduling indicated by a grant received from an another terminal.