US 11,943,814 B2
Method for transmitting and receiving NPRACH preamble in wireless communication system supporting TDD and apparatus therefor
Seokmin Shin, Seoul (KR); Changhwan Park, Seoul (KR); Jaehyung Kim, Seoul (KR); Joonkui Ahn, Seoul (KR); Suckchel Yang, Seoul (KR); and Seunggye Hwang, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Jun. 22, 2022, as Appl. No. 17/846,171.
Application 17/846,171 is a continuation of application No. 17/124,150, filed on Dec. 16, 2020, granted, now 11,425,761.
Application 17/124,150 is a continuation of application No. 16/782,284, filed on Feb. 5, 2020, granted, now 10,880,929, issued on Dec. 29, 2020.
Application 16/782,284 is a continuation of application No. 16/541,879, filed on Aug. 15, 2019, granted, now 10,813,141, issued on Oct. 20, 2020.
Application 16/541,879 is a continuation of application No. PCT/KR2019/001103, filed on Jan. 25, 2019.
Claims priority of provisional application 62/669,976, filed on May 10, 2018.
Claims priority of provisional application 62/668,771, filed on May 8, 2018.
Claims priority of provisional application 62/653,525, filed on Apr. 5, 2018.
Claims priority of provisional application 62/637,324, filed on Mar. 1, 2018.
Claims priority of provisional application 62/622,097, filed on Jan. 25, 2018.
Claims priority of application No. 10-2018-0031843 (KR), filed on Mar. 20, 2018; application No. 10-2018-0037996 (KR), filed on Apr. 2, 2018; application No. 10-2018-0042870 (KR), filed on Apr. 12, 2018; application No. 10-2018-0048702 (KR), filed on Apr. 26, 2018; application No. 10-2018-0067134 (KR), filed on Jun. 12, 2018; and application No. 10-2018-0067837 (KR), filed on Jun. 14, 2018.
Prior Publication US 2022/0346153 A1, Oct. 27, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 74/08 (2009.01); H04W 16/14 (2009.01); H04W 74/00 (2009.01)
CPC H04W 74/0833 (2013.01) [H04W 16/14 (2013.01); H04W 74/008 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method of transmitting, by a user equipment (UE), a narrowband physical random access channel (NPRACH) preamble in a wireless communication system supporting time division duplexing (TDD), the method comprising:
receiving, from a base station (BS), NPRACH configuration information via a higher layer signaling; and
transmitting, to the BS, the NPRACH preamble based on the NPRACH configuration information,
wherein, based on a preamble format 1-a, the NPRACH preamble consisting of a preamble repetition unit is repeatedly transmitted, wherein the preamble repetition unit consists of 6 symbol groups,
wherein the 6 symbol groups consist of 3 time-contiguous symbol groups,
wherein the NPRACH preamble is transmitted based on two consecutive uplink subframes related to uplink/downlink configuration 1 or uplink/downlink configuration 4, and
wherein, based on the 3 time-contiguous symbol groups overlapping with an invalid uplink subframe among the two consecutive uplink subframes:
the 3 time-contiguous symbol groups are dropped, and
based on a remaining uplink subframe among the two consecutive uplink subframes being a valid uplink subframe:
the valid uplink subframe is not used for the transmission of the NPRACH preamble, and
the valid uplink subframe is related to a resource to which a narrowband physical uplink shared channel (NPUSCH) is mapped.