METHOD FOR PERFORMING RANDOM ACCESS PROCESS AND DEVICE THEREFOR

WIPO Patent Application WO/2019/031864

A1

The present invention relates to a method for performing a random access process in a wireless communication system, and a device therefor and, more specifically, to a method and a device therefor, the method comprising the steps of: receiving narrowband physical random access channel (NPRACH) configuration information; and transmitting a random access preamble on the basis of the received NPRACH configuration information, wherein a sub-carrier spacing for the random access preamble is set to 3.75/N kHz, where N is an integer greater than or equal to 3, the random access preamble includes multiple symbol groups, the multiple symbol groups are transmitted on the basis of frequency-hopping, and a frequency-hopping distance between each of the multiple symbol groups includes a value between 3.75/N kHz and 6*3.75 kHz.

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KIM JAEHYUNG (KR)
AHN JOONKUI (KR)
KIM BYOUNGHOON (KR)
PARK CHANGHWAN (KR)
SHIN SEOKMIN (KR)
YANG SUCKCHEL (KR)
HWANG SEUNGGYE (KR)

PCT/KR2018/009084

February 14, 2019

August 09, 2018

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LG ELECTRONICS INC (KR)

H04W74/08; H04L5/00

KR20130083708A

2013-07-23

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 WG1 MEETING #89, 6 May 2017 (2017-05-06), Hangzhou, P.R. China, XP051261918
See also references of EP 3668251A4

KIM, Yong In et al. (KR)

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