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Title:
METHOD FOR ADJUSTING CONTENTION WINDOW SIZE FOR TERMINAL TO ACCESS CHANNEL IN NON-LICENSED BAND AND APPARATUS USING SAME METHOD
Document Type and Number:
WIPO Patent Application WO/2020/060370
Kind Code:
A1
Abstract:
Provided are a method for adjusting a contention window size for a terminal to access a channel in a non-licensed band, and an apparatus using the method. The terminal may transmit data via a set grant method, that is, by attempting transmission of data to a base station from each of preset resources via an LBT process. The terminal may attempt detection of feedback regarding the transmitted data for a specific time and, when the feedback is not detected within the specific time, adjust the contention window size used to determine access to the channel of the non-licensed band. In this case, the specific time is not fixed but may be set by the base station and set independently for each terminal.

Inventors:
MYUNG SECHANG (KR)
KIM SEONWOOK (KR)
PARK CHANGHWAN (KR)
AHN JOONKUI (KR)
YANG SUCKCHEL (KR)
Application Number:
PCT/KR2019/012358
Publication Date:
March 26, 2020
Filing Date:
September 23, 2019
Export Citation:
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Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H04W74/08; H04L1/00; H04L1/16; H04L1/18; H04L5/00; H04W28/04; H04W52/22; H04W72/12; H04W74/00
Domestic Patent References:
WO2017047973A12017-03-23
WO2017131476A12017-08-03
Other References:
HUAWEI ET AL.: "Coexistence and channel access for NR unlicensed band operations", R1-1808061. 3GPP TSG RAN WG1 MEETING #94, vol. RAN WG1, 10 August 2018 (2018-08-10), Gothenburg, Sweden, XP051515465
INTEL CORPORATION: "Enhancements to channel access mechanism for NR-unlicensed", R1-1808685. 3GPP TSG RAN WG1 MEETING#94, vol. RAN WG1, 11 August 2018 (2018-08-11), Gothenburg, Sweden, XP051516060
LG ELECTRONICS: "Channel access procedure for NR unlicensed operation", R1-1808507. 3GPPTSG RAN WG1 MEETING #94, vol. RAN WG1, 11 August 2018 (2018-08-11), XP051515885
Attorney, Agent or Firm:
ENVISION PATENT & LAW FIRM (KR)
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