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A method for generating a wake-up signal in a low-power and micro-power wireless communication system

A micro-power wireless, wake-up signal technology, applied in the field of communication, can solve the problems of increasing energy consumption and reducing the waiting time of reception, and achieve the effect of reducing power consumption and reducing the waiting time of reception

Active Publication Date: 2022-02-15
深圳市力合微电子股份有限公司
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of increased energy consumption in the prior art, and provide a wake-up signal and a generation method of a low-power micropower wireless communication system, the wake-up signal generated by the wake-up signal can satisfy the receiver's rapid response to the wake-up signal; and It can reduce the receiving waiting time at the receiving end and achieve the purpose of reducing power consumption

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  • A method for generating a wake-up signal in a low-power and micro-power wireless communication system
  • A method for generating a wake-up signal in a low-power and micro-power wireless communication system
  • A method for generating a wake-up signal in a low-power and micro-power wireless communication system

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specific Embodiment approach 1

[0015] This embodiment provides a method for generating a wake-up signal of a micropower wireless communication system, such as figure 1 shown.

[0016] Wake-up signals include N wake A wake-up symbol, the number of wake-up symbols N wake It can be calculated according to system requirements. In this embodiment, the duration of sending the wake-up symbol is T=2s, the maximum peak amplitude of the wake-up symbol is A=1, the spreading factor SF=8, and the frequency range is 0-250kHz; then the signal bandwidth is BW=250kHz. Each wake-up symbol is divided into a synchronous part S syn (t) and timing part S cnt (t), their modulation time ratio is 2:1, the synchronous part S syn( t) The modulation time of a single wake-up symbol is T s = 2 SF / BW, that is, the modulation time is 1.024ms, and the timing part S cnt (t) The modulation time of a single wake-up symbol is Tc=2 SF-1 / BW, that is, the modulation time is 0.512ms, so the modulation period of a wake-up symbol is T wa...

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Abstract

The present invention provides a wake-up signal generation method for a low-power and micro-power wireless communication system, comprising the following steps: 1. generating a synchronization part of a wake-up symbol, the synchronization part being a basic chirp signal; 2. generating a timing part of a wake-up symbol, timing Part of it is a modulated chirp signal; 3. Combining the synchronization part and the timing part of the wake-up symbol into a complete wake-up symbol, wherein the phase between the synchronization part and the timing part is continuous; 4. Combining the wake-up symbol into a wake-up signal. The modulation method of the wake-up signal is linear frequency modulation, so that the receiver can quickly respond to the wake-up signal, and can reduce the receiving waiting time at the receiving end, so as to achieve the purpose of reducing power consumption and so on.

Description

technical field [0001] The invention relates to the communication field, in particular to a method for generating a wake-up signal of a wireless system for long-distance transmission with low power consumption. Background technique [0002] Low-power wide-area networks are developing rapidly around the world. According to global GSMA statistics, by 2020, the entire Internet of Things industry will have greater development capabilities. Among them, LPWAN (Low-Power Wide-Area Net, low-power wide-area network) application connection The number will account for 60% of the total number of connections in the Internet of Things, and its importance is self-evident. my country has also been actively promoting the development of Internet of Things-related industries. Domestic industrial policy support has been continuously strengthened, and the scale of the industry and market has continued to expand, with huge development potential. In order to solve the current difficulties such as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/02H04L27/10
CPCH04L27/103H04W52/0216H04W52/0248Y02D30/70
Inventor 刘鲲刘元成陈文康陈丽恒
Owner 深圳市力合微电子股份有限公司
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