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Method and device, storage medium and terminal for determining weak Wi-Fi signal

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 reducing power consumption

Active Publication Date: 2021-09-03
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Description
  • Claims
  • Application Information

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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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  • Method and device, storage medium and terminal for determining weak Wi-Fi signal
  • Method and device, storage medium and terminal for determining weak Wi-Fi signal
  • Method and device, storage medium and terminal for determining weak Wi-Fi signal

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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, e...

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Abstract

A method and device, a storage medium, and a terminal for determining a Wi-Fi weak signal, the method comprising: receiving a signal to be determined; performing energy sliding accumulation according to the signal to be determined, and obtaining a multi-time signal at a time including the current sampling value The cumulative value of the energy value at a sample value moment, wherein the energy value is determined according to the amplitude value of the signal to be determined at the sample value moment; determine the first preset energy threshold and the energy value at the preset sample value moment The product value; at least according to the comparison relationship between the cumulative value of the energy value at the current sampling value moment and the product value, determine whether the signal to be determined is a Wi-Fi weak signal; wherein, the first preset energy threshold is greater than is equal to 1. The solution of the present invention can effectively reduce power consumption when receiving weak Wi-Fi signals.

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 Patents(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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