Method and device for dynamically networking sensing extension layer of Internet of things

Abstract

The invention discloses a method and a device for dynamically network a sensing extension layer of the Internet of things, relates to the technical field of communication networks, and is used for solving a problem of frequency band interference existing in communication of the sensing extension layer of the Internet of things. According to the embodiment of the invention, periodic sensing trigger signalling is sent to sensing nodes, wherein the sensing trigger signalling comprises a preset frequency band; frequency band detection results sent by the sensing nodes are received, wherein the frequency band detection results comprise sensing frequency points and detection probabilities Pd corresponding to the sensing frequency points; frequency band detection is carried out on the sensing frequency points in the frequency band detection results to acquire an average frequency band detection result, and the average frequency band detection result comprises an average detection probability Pd-ave corresponding to the sensing frequency points; and when the detection probabilities Pd corresponding to the sensing frequency points are greater than or equal to the average detection probability Pd-ave corresponding to the sensing frequency points, the preset frequency band acts as a idle communication frequency band, and data transmission is carried out with the sensing nodes through the idle communication frequency band. The scheme provided by the embodiment of the invention is suitable to be adopted when networking is carried out on the sensing extension layer of the Internet of things.

Description

technical field [0001] The invention relates to the technical field of communication networks, in particular to a method and device for dynamic networking of the perception extension layer of the Internet of Things. Background technique [0002] The Internet of Things is a network that integrates sensors and sensor network technology, communication network and Internet technology, and intelligent computing technology to achieve comprehensive perception, reliable transmission, and intelligent processing to connect the physical world. The Internet of Things is mainly composed of three parts: perception extension layer, communication network layer and application layer. Among them, the perception extension layer is located at the bottom layer of the Internet of Things architecture, which realizes data perception, collection, processing and transmission for the application environment. The sensing nodes first collect the collected data into the gateway through the sensor networ...

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Problems solved by technology

[0004] However, since the ISM open frequency band can be used by most wireless technology devices (such as microwave ovens, Bluetooth, cordless phones, wireless mice, and wireless home appliances, etc.), these wireless technology devices are only random when using the ISM open frequency band. The selection of frequency bands makes the same-frequency interference between wireless technology devices increasingly serious, which leads to frequency band interference in the communication of the IoT perception extension layer, making normal communication between wireless technology devices impossible

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