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US 12,309,733 B2Granted
Signal sending and processing method and apparatus
AssigneeHuawei Technologies Co., Ltd.
InventorsChenlei Xu, Jianwei Zhou, Hejia Luo, Xiaolu Wang
Life of this patent
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Abstract
This application discloses example signal sending methods and apparatuses, and example signal processing methods and apparatuses. One example method includes generating, by a terminal device, a channel sounding reference signal (SRS). The terminal device can then send the SRS to a target base station, where 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.
Claims18
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 {tilde over (r)}u,v(α,δ)(n) in one SRS frequency domain sequence by one element c(n) of the mask sequence based on:
- {tilde over (r)}u,v(α,δ)(n)=ejanru,v(n),0≤n<MZC
- ru,v(α,δ)(n)=c(n)·{tilde over (r)}u,v(α,δ)(n),0≤n<MZC
- wherein ru,v(α,δ)(n) represents one piece of frequency domain data in the masked SRS frequency domain sequence, and MZC is 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.
4 more elements
A signal processing method, comprising:
- receiving a sounding reference signal (SRS) sent by a terminal device, wherein the SRS is generated based on performing time domain mapping on a masked SRS frequency domain sequence, and wherein the masked SRS frequency domain sequence is generated 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 {tilde over (r)}u,v(α,δ)(n) in one SRS frequency domain sequence by one element c(n) of the mask sequence based on:
- {tilde over (r)}u,v(α,δ)(n)=ejanru,v(n),0≤n<MZC
- ru,v(α,δ)(n)=c(n)·{tilde over (r)}u,v(α,δ)(n),0≤n<MZC
- wherein ru,v(α,δ)(n) represents one piece of frequency domain data in the masked SRS frequency domain sequence, and MZC is a length of the SRS frequency domain sequence;
- and
- tracking an uplink timing location of the terminal device based on the SRS, wherein a change range of the uplink timing location is not less than a length of one SRS symbol.
3 more elements
A communication apparatus, comprising:
- at least one processor;
- and
- one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to:
- generate 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 {tilde over (r)}u,v(α,δ)(n) in one SRS frequency domain sequence by one element c(n) of the mask sequence based on:
- {tilde over (r)}u,v(α,δ)(n)=ejanru,v(n),0≤n<MZC
- ru,v(α,δ)(n)=c(n)·{tilde over (r)}u,v(α,δ)(n),0≤n<MZC
- wherein ru,v(α,δ)(n) represents one piece of frequency domain data in the masked SRS frequency domain sequence, and MZC is a length of the SRS frequency domain sequence;
- generate a channel SRS based on performing time domain mapping on the masked SRS frequency domain sequence;
- and
- send 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 communication apparatus is not less than a length of one SRS symbol.
7 more elements
Dependencies are inferred from the claim text.