Title:
METHOD FOR PERFORMING RANDOM ACCESS PROCESS AND APPARATUS THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/031889
Kind Code:
A1
Abstract:
The present invention relates to a method for performing, by a terminal, a random access process in a wireless communication system supporting first and second preamble formats, and an apparatus therefor. Particularly, the present invention relates to a method comprising: a step of receiving narrowband physical random access channel (NPRACH) configuration information; and a step of transmitting a random access preamble on the basis of a preamble format indicated by the NPRACH configuration information of the first and second preamble formats, wherein the length of one symbol of the second preamble format corresponds to three times the length of one symbol of the first preamble format, and the first preamble format has a frequency grid spacing of 3.75 kHz, and the second preamble format has a frequency grid spacing of 1.25 kHz, and to an apparatus therefor.
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Inventors:
KIM JAEHYUNG (KR)
PARK CHANGHWAN (KR)
AHN JOONKUI (KR)
SHIN SEOKMIN (KR)
YANG SUCKCHEL (KR)
HWANG SEUNGGYE (KR)
PARK CHANGHWAN (KR)
AHN JOONKUI (KR)
SHIN SEOKMIN (KR)
YANG SUCKCHEL (KR)
HWANG SEUNGGYE (KR)
Application Number:
PCT/KR2018/009127
Publication Date:
February 14, 2019
Filing Date:
August 09, 2018
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H04W74/08; H04L27/26
Domestic Patent References:
| WO2014003339A1 | 2014-01-03 |
Other References:
LG ELECTRONICS: "NPRACH Range Enhancement for NB-IoT", R1-1707575, 3GPP TSG RAN WG1 MEETING #89, 6 May 2017 (2017-05-06), Hangzhou, P.R. China, XP051261917
QUALCOMM INCORPORATED: "NPRACH Support for Large Cell Access", R1-1708806, 3GPP TSG RANI MEETING #89, 6 May 2017 (2017-05-06), Hangzhou, Zhejiang , China, XP051262681
HUAWEI ET AL.: "On Support of Larger Cell Radius for NPRACH", R1-1707025, 3GPP TSG RAN WG1 MEETING #89, 6 May 2017 (2017-05-06), Hangzhou, China, XP051261638
LG ELECTRONICS: "NPRACH Reliability for NB-IoT", R1-1707576, 3GPP TSG RAN WGI MEETING #89, 6 May 2017 (2017-05-06), Hangzhou, P.R. China, XP051261918
See also references of EP 3668250A4
QUALCOMM INCORPORATED: "NPRACH Support for Large Cell Access", R1-1708806, 3GPP TSG RANI MEETING #89, 6 May 2017 (2017-05-06), Hangzhou, Zhejiang , China, XP051262681
HUAWEI ET AL.: "On Support of Larger Cell Radius for NPRACH", R1-1707025, 3GPP TSG RAN WG1 MEETING #89, 6 May 2017 (2017-05-06), Hangzhou, China, XP051261638
LG ELECTRONICS: "NPRACH Reliability for NB-IoT", R1-1707576, 3GPP TSG RAN WGI MEETING #89, 6 May 2017 (2017-05-06), Hangzhou, P.R. China, XP051261918
See also references of EP 3668250A4
Attorney, Agent or Firm:
KIM, Yong In et al. (KR)
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