Frequency allocation method for Internet of Things and access gateway of Internet of Things

Abstract

The invention provides a frequency allocation method for Internet of Things and an access gateway of Internet of Things. The method comprises the following steps: the access gateway of Internet of Things detects an idle frequency band available for a sensing extension layer in a maximal frequency band scope determined by a radio frequency identification capability of the access gateway of Internet of Things; the access gateway of Internet of Things obtains a data transmission characteristic of a node having a requirement of business transmission in the sensing extension layer from a business support platform of Internet of Things; and the access gateway of Internet of Things allocates the idle frequency band for the node according to the data transmission characteristic. According to the invention, the idle frequency band is determined first, and then the idle frequency band is allocated according to the data transmission characteristics of the node having the requirement of business transmission, thereby solving the problem of interference among different wireless signals caused by randomly accessing an ISM (industrial scientific medical) frequency band, and ensuring the communication quality.

Description

Technical field [0001] The invention relates to an Internet of Things frequency band allocation method and an Internet of Things access gateway, belonging to the technical field of Internet of Things communication. Background technique [0002] Internet of Things (Internet of Things, referred to as: IOT) is a kind of connected physics that integrates sensors and sensor network technology, communication network and Internet technology, intelligent computing technology, etc., to achieve comprehensive perception, reliable transmission, and intelligent processing. The network of the world. The basic architecture of the existing Internet of Things such as figure 1 As shown, it mainly includes: perception extension layer, network layer and application layer. among them: [0003] The perception extension layer is located at the bottom of the IoT architecture and realizes data perception, collection, processing and transmission for the application environment. It mainly includes IoT acce...

AI Technical Summary

Problems solved by technology

[0006] However, the existing technology does not consider the synergy between multiple wireless communication technologies when allocating IoT frequency bands to various terminals in the sensing extension layer.

For example, the short-distance wireless communication technologies between the terminals involved in the perception extension layer mainly include RFID, Bluetooth, IEEE 802.11, etc., and the wireless frequency bands used by these technologies are, for example, Industrial Scientific Medical (Industrial Scientific Medical, referred to as: ISM) frequency bands. , because the ISM frequency band is an unlicensed frequency band, the terminal can access and use it for free only by complying with a certain transmission power. Since it is not known whether the frequency point used is already occupied by other wireless signals when accessing, it will aggravate the frequency of different wireless signals. interference between

Images