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Wi-Fi weak signal determination method and device, storage medium and terminal

A determination method and weak signal technology, applied in the field of communication, can solve the problem of high power consumption of AGC module, and achieve the effect of reducing multiplication calculation, improving operation efficiency, and improving recognition and accuracy

Active Publication Date: 2020-05-26
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Claims
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Problems solved by technology

Therefore, for receiving weak signals, in the prior art, the method of sliding correlation between front and rear signals is usually used to detect the frame header, resulting in excessive power consumption of the AGC module

Method used

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  • Wi-Fi weak signal determination method and device, storage medium and terminal
  • Wi-Fi weak signal determination method and device, storage medium and terminal
  • Wi-Fi weak signal determination method and device, storage medium and terminal

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Embodiment Construction

[0038]As mentioned earlier, for Wi-Fi and other burst communication systems, the signal is usually transmitted independently by frame, so when receiving a frame signal, it is not known when the signal will arrive, so the frame header must be detected in time .

[0039] However, for weak signals, where the signal is comparable to or even lower than the noise, energy detection is difficult to work with. If the energy detection threshold is slightly higher, there will be a high probability of missed detection; if the energy detection threshold is slightly lower, there will be a high probability of false detection, which also seriously affects the work of the AGC.

[0040] refer to figure 1 , figure 1 It is a structural schematic diagram of an AGC module in the prior art.

[0041] Such as figure 1 As shown, the signal is received by the antenna and enters the RF front-end, and the operation of low-noise amplification, spectrum shifting, filtering, variable gain amplification, ...

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Abstract

The invention discloses a Wi-Fi weak signal determination method and device, a storage medium and a terminal. The method comprises the steps of receiving a to-be-determined signal; performing energy sliding accumulation according to the to-be-determined signal to obtain an accumulated value of energy values at a plurality of sampling value moments including a current sampling value moment, whereinthe energy values are determined according to amplitude values of the to-be-determined signal at the sampling value moments; determining a product value of a first preset energy threshold value and an energy value at a preset sampling value moment; determining whether the to-be-determined signal is a Wi-Fi weak signal at least according to a comparison relationship between an accumulated value ofenergy values at the current sampling value moment and the product value, wherein the first preset energy threshold value is greater than or equal to 1. According to the scheme of the invention, thepower consumption can be effectively reduced when the Wi-Fi weak signal is received.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular to a method and device, a storage medium, and a terminal for determining weak Wi-Fi signals. Background technique [0002] For Wi-Fi and other burst communication systems, the signal is usually transmitted independently by frame, so when receiving a frame signal, it is not known when the signal will arrive, so the frame header must be detected in time first, and the receiver The analog gain is adjusted to an appropriate size to ensure subsequent receiving demodulation, for example, an automatic gain control (Automatic Gain Control, AGC) module is used to realize the above functions. [0003] When receiving a strong signal, the frame header can be captured simply by energy detection. However, for burst communication systems, such as Bluetooth and Wi-Fi (802.11a / b / g / n / ac / ax) systems, in order to ensure that they work at a long distance or in an environment with s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/02
CPCH04W52/0212H04W52/0245Y02D30/70H04B17/26H04W84/12H04B17/318H04W24/08
Inventor 曹明伟
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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