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Generation method for wake-up signal of low-power-consumption micropower wireless communication system

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

Active Publication Date: 2019-03-22
深圳市力合微电子股份有限公司
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  • Application Information

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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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  • Generation method for wake-up signal of low-power-consumption micropower 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 invention provides a generation method for a wake-up signal of a low-power-consumption micropower wireless communication system. The generation method comprises the following steps: firstly, generating a synchronization part of a wake-up symbol, wherein the synchronization part is a basic linear frequency modulation signal; secondly, generating a timing part of the wake-up symbol, wherein thetiming part is a modulated linear frequency modulation signal; thirdly, combining the synchronization part and the timing part of the wake-up symbol into a complete wake-up symbol, wherein phase is continuous between the synchronization part and the timing part; and fourthly, combining the wake-up symbol into the wake-up signal. A modulation method of the wake-up signal is linear frequency modulation respectively, so that a receiver quickly responds to the wake-up signal; and reception waiting time of a receiving terminal can be reduced, and the characteristic of reducing power consumption isachieved.

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 Applications(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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