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Cross-protocol communication method and device from Wi-Fi to BLE

A communication method and cross-protocol technology, applied in short-distance communication services, electrical components, transmission systems, etc., can solve the problems of intolerant Wi-Fi simulation errors and increased Wi-Fi simulation errors, and achieve small simulation errors, The effect of high decoding probability

Active Publication Date: 2019-12-20
TSINGHUA UNIV
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Problems solved by technology

This asymmetry also increases the simulation error of Wi-Fi; (3) The BLE receiver does not have a fault-tolerant mechanism similar to DSSS, and cannot tolerate the simulation error of Wi-Fi

Method used

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  • Cross-protocol communication method and device from Wi-Fi to BLE

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Embodiment Construction

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0033]Before describing the embodiments of the present invention in detail, a concept of a BLE symbol (BLE symbol) is firstly introduced.

[0034] A Wi-Fi symbol (Wi-Fi symbol) lasts for 4us, and a BLE bit lasts for 1us, so a Wi-Fisymbol can simulate 4 BLE bits. Therefore, the embodiment of the present invention defines the concept of a BLE symbo...

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Abstract

The embodiment of the invention provides a cross-protocol communication method and device from Wi-Fi to BLE. The method comprises the following steps: splitting and encoding each bit of a BLE symbol to generate an initial phase sequence; adjusting the initial phase sequence according to a decoding probability model to obtain a phase sequence with the maximum probability that the BLE symbol is correctly decoded, the decoding probability model being determined according to the probability that an error occurs when a sampling point falls into a specified phase; optimizing the phase sequence according to a phase optimization model to obtain an optimal phase sequence of the BLE symbol, the phase optimization model being an objective function constructed by taking minimum simulation error of Wi-Fi as an objective; and simulating a target waveform by using a Wi-Fi signal to perform cross-protocol communication from Wi-Fi to BLE, the target waveform being a time domain waveform corresponding to the optimal phase sequence. According to the embodiment of the invention, cross-protocol communication from Wi-Fi to BLE can be realized, the Wi-Fi simulation error is small, and the decoding probability of the symbol at the receiving end is high.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a method and device for cross-protocol communication from Wi-Fi to BLE. Background technique [0002] Large-scale Internet of Things applications have brought about the vigorous development of wireless sensing and control applications. The three most popular wireless network standards commonly used at present are WiFi, ZigBee and Bluetooth (Bluetooth). The working frequency bands of WiFi, ZigBee and Bluetooth are all 2.4GHz free ISM (Industrial Scientific Medical) frequency bands. In many scenarios, the coexistence of these heterogeneous devices in physical space will inevitably lead to the interference of their respective wireless communication systems by each other. and mutual channel competition. In order to achieve more efficient data transmission and spectrum usage between heterogeneous devices, information transmission and exchange between these heterogeneou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04W4/80
CPCH04L69/08H04W4/80
Inventor 何源郭秀珍
Owner TSINGHUA UNIV
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