Title:
METHOD FOR PERFORMING INITIAL ACCESS PROCEDURE IN UNLICENSED BAND IN WIRELESS COMMUNICATION SYSTEM AND USER EQUIPMENT USING SAME
Document Type and Number:
WIPO Patent Application WO/2020/032703
Kind Code:
A1
Abstract:
The present invention provides a method, performed by a user equipment (UE), for performing an initial access procedure in an unlicensed band, the method comprising: performing the initial access procedure with a base station; and performing transmission of a physical uplink shared channel (PUSCH) on the basis of the performing of the initial access procedure, wherein the UE obtains, from the base station, information about a listen before talk (LBT) type and information about a PUSCH starting position, and the UE performs the transmission of the PUSCH on the basis of the information about the LBT type and the information about the PUSCH starting position. The information about the PUSCH starting position is information indicating one position among a plurality of PUSCH starting position candidates. The information about the LBT type indicates one of a LBT type 1, a LBT type 2, and a LBT type 3. The UE performs random backoff-based LBT in the LBT type 1, the UE performs LBT without a random backoff in the LBT type 2, and the UE does not perform LBT in the LBT type 3.
Inventors:
MYUNG SECHANG (KR)
KIM SEONWOOK (KR)
AHN JOONKUI (KR)
YANG SUCKCHEL (KR)
KIM SEONWOOK (KR)
AHN JOONKUI (KR)
YANG SUCKCHEL (KR)
Application Number:
PCT/KR2019/010099
Publication Date:
February 13, 2020
Filing Date:
August 09, 2019
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H04W72/12; H04L5/00; H04W72/14; H04W74/00; H04W74/08
Domestic Patent References:
| WO2017138702A1 | 2017-08-17 |
Foreign References:
| US20170359808A1 | 2017-12-14 |
Other References:
INTERDIGITAL INC.: "On NR-Unlicensed Frame Structure", R1-1807034, 3GPP TSG RAN WG1 MEETING #93, vol. RAN WG1, 12 May 2018 (2018-05-12), Busan, Korea, pages 1 - 5, XP051462860
INTERDIGITAL INC.: "On Frame Structure for NR-U Operation", R1-1804868, 3GPP TSG RAN WG1 MEETING #92BIS, vol. RAN WG1, 7 April 2018 (2018-04-07), Sanya, China, pages 1 - 5, XP051414220
BROADCOM CABLELABS CHARTER: "WF on eNB to UE COT sharing in Autonomous UL in FeLAA", R1- 1803042, 3GPP TSG RAN WG1 MEETING #92, vol. RAN WG1, 27 February 2018 (2018-02-27), Athens, Greece, pages 1 - 5, XP051398437
INTERDIGITAL INC.: "On Frame Structure for NR-U Operation", R1-1804868, 3GPP TSG RAN WG1 MEETING #92BIS, vol. RAN WG1, 7 April 2018 (2018-04-07), Sanya, China, pages 1 - 5, XP051414220
BROADCOM CABLELABS CHARTER: "WF on eNB to UE COT sharing in Autonomous UL in FeLAA", R1- 1803042, 3GPP TSG RAN WG1 MEETING #92, vol. RAN WG1, 27 February 2018 (2018-02-27), Athens, Greece, pages 1 - 5, XP051398437
Attorney, Agent or Firm:
ENVISION PATENT & LAW FIRM (KR)
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