US 12,010,054 B2
DMRS transmission
Yukai Gao, Beijing (CN); Lin Liang, Beijing (CN); and Gang Wang, Beijing (CN)
Assigned to NEC CORPORATION, Tokyo (JP)
Appl. No. 17/419,988
Filed by NEC CORPORATION, Tokyo (JP)
PCT Filed Jan. 9, 2019, PCT No. PCT/CN2019/071012
§ 371(c)(1), (2) Date Jun. 30, 2021,
PCT Pub. No. WO2020/142937, PCT Pub. Date Jul. 16, 2020.
Prior Publication US 2022/0085937 A1, Mar. 17, 2022
Int. Cl. H04L 5/00 (2006.01); H04L 27/26 (2006.01); H04L 27/34 (2006.01)
CPC H04L 5/0048 (2013.01) [H04L 27/2614 (2013.01); H04L 27/3488 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method implemented at a terminal device, the method comprising:
generating, based on a first sequence, a Demodulation Reference Signal (DMRS) sequence for an uplink channel, wherein the first sequence is obtained as complex-valued modulation symbols resulting from a π/2-Binary Phase Shift Keying (BPSK) modulation applied to a binary sequence given by a table comprising a plurality of sequences; and
transmitting, over the uplink channel, the DMRS sequence to a base station, wherein,
in a case where a length of the first sequence is 12, the plurality of sequences include the following:
{0, 1, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0} and
{0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0},
in a case where a length of the first sequence is 18, the plurality of first sequences include the following:
{1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 0} and
{1, 1, 0, 1, 0, 1, 0, 1, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0}, and
in a case where a length of the first sequence is 24, the plurality of first sequences include the following:
{1, 0, 0, 0, 1, 1, 0, 1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0},
{1, 0, 1, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 1, 0, 0}, and
{0, 1, 0, 0, 1, 0, 1, 0, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 1, 0, 0}.