	US 12,309,733 B2
	Signal sending and processing method and apparatus
Chenlei Xu, Hangzhou (CN); Jianwei Zhou, Hangzhou (CN); Hejia Luo, Hangzhou (CN); and Xiaolu Wang, Hangzhou (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on Mar. 29, 2022, as Appl. No. 17/707,568.
Application 17/707,568 is a continuation of application No. PCT/CN2020/116012, filed on Sep. 17, 2020.
Claims priority of application No. 201910945860.5 (CN), filed on Sep. 30, 2019.
Prior Publication US 2022/0225261 A1, Jul. 14, 2022
Int. Cl. H04W 56/00 (2009.01); H04L 5/00 (2006.01); H04L 25/02 (2006.01); H04L 27/26 (2006.01)

CPC H04W 56/0075 (2013.01) [H04L 5/0051 (2013.01); H04L 25/0224 (2013.01); H04L 27/2657 (2013.01)]

18 Claims

1. A signal sending method, comprising:

generating, by a terminal device, a masked sounding reference signal (SRS) frequency domain sequence based on multiplying an SRS frequency domain sequence by a mask sequence, wherein multiplying the SRS frequency domain sequence by the mask sequence comprises multiplying one piece of frequency domain data r_u,v^(α,δ)(n) in one SRS frequency domain sequence by one element c(n) of the mask sequence based on:

r_u,v^(α,δ)(n)=e^janr_u,v(n),0≤n<M_ZC

r_u,v^(α,δ)(n)=c(n)·r_u,v^(α,δ)(n),0≤n<M_ZC

wherein r_u,v^(α,δ)(n) represents one piece of frequency domain data in the masked SRS frequency domain sequence, and M_ZCis a length of the SRS frequency domain sequence;

generating, by the terminal device, a channel SRS based on performing time domain mapping on the masked SRS frequency domain sequence; and

sending, by the terminal device, the SRS to a target base station, wherein the target base station detects, by using the SRS, that a change range of an uplink timing location of the terminal device is not less than a length of one SRS symbol.