Wireless communication system and wake up method thereof

Abstract

The present invention relates to a wireless communication system and a wake up method thereof. The wake up method includes the following steps: when main equipment has a communication requirement, the main equipment converts a pseudo random sequence code into a wake up bit stream through coding transformation, modulates the wake up bit stream into a wireless modulation signal, and sends the wireless modulation signal to at least one slave equipment in a preset duration time, wherein the preset time is greater than or equal to a sum of a dormancy period and a detection period of the slave equipment; each slave equipment receives the wireless modulation signal in the detection period, demodulates the wireless modulation signal into the wake up bit stream, carries out sampling and decoding on the wake up bit stream, and determines whether to wake up the slave equipment or not according to a decoding result. Through the implementation of a technical scheme of the invention, time synchronization of a wireless communication device involving communication does not needed; anti-interference ability is strong, problems of identity identification and false wake up are solved, and reliability is raised; the detection period of the salve equipment can be shortened, a receiving window time of the salve equipment is reduced, and power consumption of a communication system is reduced.

Description

technical field [0001] The present invention relates to the technical field of communication, and more specifically, to a wireless communication system and a wake-up method thereof. Background technique [0002] Micropower (short distance) wireless communication technology began to appear at the end of the last century. After more than ten years of development, it has been widely used in industrial control, home intelligence, wireless remote control, security alarm, environmental monitoring, smart meter reading, toxic and harmful gas monitoring, Logistics, RFID and other fields. In recent years, the Internet of Things has been regarded as a new growth point for future economic development after the financial crisis at home and abroad. The short-distance wireless communication technology will get greater development in the application of the Internet of Things (especially the sensor network). [0003] The concept of the Internet of Things came almost simultaneously with the...

AI Technical Summary

Problems solved by technology

[0041] The technical problem to be solved by the present invention is to provide a wake-up method for the defects of the prior art that all wireless communication devices participating in the communication must be synchronized in time, have poor anti-interference ability, and have a long receiving window time, which results in high power consumption. , no need to synchronize all communication devices in time, strong anti-interference ability, short receiving window time so that the power consumption is low

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