	US 12,273,227 B2
	Communication method and apparatus utilizing radio frame number for inter-cell randomization
Jun Li, Shanghai (CN); Xiaolei Tie, Shanghai (CN); and Zhihu Luo, Beijing (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Feb. 16, 2022, as Appl. No. 17/673,605.
Application 17/673,605 is a continuation of application No. PCT/CN2020/109398, filed on Aug. 14, 2020.
Claims priority of application No. 201910760366.1 (CN), filed on Aug. 16, 2019.
Prior Publication US 2022/0173953 A1, Jun. 2, 2022
Int. Cl. H04L 27/26 (2006.01); H04L 5/00 (2006.01); H04L 27/00 (2006.01)

CPC H04L 27/2691 (2013.01) [H04L 5/0048 (2013.01); H04L 27/0006 (2013.01); H04L 27/26025 (2021.01); H04L 27/2675 (2013.01)]

18 Claims

1. A communication method, comprising:

generating a demodulation reference signal based on a first parameter, wherein the demodulation reference signal is a reference signal for demodulating a first channel, the first channel is for carrying uplink control information, and the first parameter comprises a radio frame number of a radio frame for sending the demodulation reference signal; and

sending the demodulation reference signal and the first channel,

wherein the generating the demodulation reference signal based on the first parameter comprises:

generating a first sequence based on the radio frame number;

generating a second sequence based on a cell identifier;

generating a sequence of the demodulation reference signal based on the first sequence and the second sequence; and

mapping the sequence of the demodulation reference signal to a time-frequency resource, wherein the time-frequency resource is for sending the demodulation reference signal; and

wherein the first sequence is [w(0), w(1), w(2)], the second sequence is [r_u(0), r_u(1), . . . , (K−1)r_u(0), r_u(1) . . . r_u(K−1)], and the sequence of the demodulation reference signal is r_u(3n+m)=w(m)r_u(n), wherein K is a length of the second sequence, u=N_ID^cellmod 16, N_ID^cellis the cell identifier, a value of m is {0, 1, 2}, and a value of n is {0, 1, 2, . . . , K−1}.