Clustering-wireless-sensor-network-orientated two-stage adaptive frequency-hopping method

Abstract

The invention relates to a clustering-wireless-sensor-network-orientated two-stage adaptive frequency-hopping method. The method comprises the following steps of: constructing the clustering wireless sensor network; defining a super-frame structure based on institute of electrical and electronic engineer (IEEE) 802.15.4 according to the topological structure of the clustering wireless sensor network; accessing a format of a beacon frame of a control layer based on a medium of the original IEEE 802.15.4, and extending a content of a beacon frame load; and accessing the beacon frame of the control layer based on the super-frame structure and the extended medium of the IEEE 802.15.4 so as to realize a two-stage adaptive frequency-hopping process of a node in the network. By the clustering wireless sensor network, the network size is expanded, the difficulty in maintenance and management is lowered, and the system flexibility is improved; as the two-stage frequency-hopping method is designed, the compatibility with the IEEE 802.15.4 and the system reliability are guaranteed; and based on the beacon frame load of the IEEE 802.15.4, no special frame is not needed to be designed for a broadcast channel distribution result during a channel switching process, so that the network design is simplified, the number of the frames for controlling is reduced, and the network throughput is increased.

Description

technical field [0001] The invention relates to wireless communication technology, and specifically describes a two-stage self-adaptive frequency hopping method for clustering wireless sensor networks. Background technique [0002] Since mankind entered the 21st century, the rapid development of disciplines such as micro-electro-mechanical systems (Micro-Electro-MechanismSystem, MEMS), computers, communications, automatic control and artificial intelligence has given birth to a new type of measurement and control network - wireless sensor network (Wireless Sensor Network). SensorNetwork, WSN). [0003] The wireless sensor network is an "intelligent" autonomous measurement and control network system that is composed of a large number of ubiquitous tiny sensor nodes with communication and computing capabilities densely deployed in unattended monitoring areas that can independently complete specified tasks according to the environment. Wireless sensor network is an ultra-large...

AI Technical Summary

Problems solved by technology

However, the existing IEEE 802.15.4 standard does not use frequency hopping technology, and the multi-level adaptive frequency hopping technology for clustered wireless sensor networks based on IEEE 802.15.4 standard has not been reported yet.

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