CPC H04L 5/0048 (2013.01) [H04L 27/2614 (2013.01); H04L 27/3488 (2013.01)] | 12 Claims |
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}.
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