US 11,838,955 B2
Channel access method for performing transmission in unlicensed band, and device using same
Minseok Noh, Seoul (KR); Kyungjun Choi, Gyeonggi-do (KR); and Jinsam Kwak, 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 May 9, 2022, as Appl. No. 17/740,194.
Application 17/740,194 is a continuation of application No. 17/590,824, filed on Feb. 2, 2022, granted, now 11,503,653.
Application 17/590,824 is a continuation of application No. PCT/KR2020/010409, filed on Aug. 6, 2020.
Claims priority of application No. 10-2019-0095457 (KR), filed on Aug. 6, 2019.
Prior Publication US 2022/0304050 A1, Sep. 22, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 74/08 (2009.01); H04W 72/1263 (2023.01); H04W 72/23 (2023.01)
CPC H04W 74/085 (2013.01) [H04W 72/1263 (2013.01); H04W 72/23 (2023.01); H04W 74/0816 (2013.01); H04W 74/0866 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A user equipment (UE) for use in a 3rd generation partnership project new radio (3GPP NR)-based wireless communication system supporting operations in an unlicensed band, the UE comprising:
a communication module; and
a processor controlling the communication module,
wherein the processor is configured to:
receive scheduling information for a plurality of consecutive UL transmissions;
attempt a channel access to transmit an UL transmission, which is not a last UL transmission, among the plurality of consecutive UL transmissions, according to one of at least:
a first channel access type based on a back-off, and
a second channel access type based on a fixed sensing duration only, the fixed sensing duration being one of various time lengths including 16 μs and 25 μs; and
based on (1) the first channel access corresponding to the second channel access type with a fixed sensing duration of 16 μs, and (2) the channel access being failed, attempt to transmit a next UL transmission among the plurality of consecutive UL transmissions, according to the second channel access type with a fixed sensing duration of 25 μs.