Topology control method for wireless optical sensor network based on clustering

Abstract

The invention discloses a topology control method for a wireless optical sensor network based on clustering, in order to mainly solve the problems of un-uniform energy consumption of network nodes andunstable network topology in the prior art. The topology control method has the implementation scheme characterized by comprising the steps of: 1. initializing the wireless optical sensor network toenable nodes to generate random numbers; 2. calculating the cluster radius of each node and partial average residual energy in the wireless optical sensor network according to a radio energy consumption model; 3. setting a cluster head election threshold according to a present cluster head election threshold by taking residual energy of the node and the distance from the node to a base station asan important standard; and 4. comparing the random numbers generated by the nodes with the cluster head election threshold, electing cluster heads and cluster members and performing clustering. The topology control method of the invention has the beneficial effects of prolonging service life of the nodes, effectively improving stability of the network, and uniforming the energy consumption of thenodes, and the topology control method can be applied to topology control of an optical communication network with static nodes.

Description

technical field [0001] The invention belongs to the technical field of optical communication, and in particular relates to a wireless optical sensor network topology control method, which can be used for optical communication network topology control under static nodes. Background technique [0002] Optical communication refers to the communication method using light wave as the carrier, including optical fiber, wireless light, and visible light and other communication technologies. Among them, wireless optical communication OWC refers to the communication method that uses ultraviolet, blue-green, infrared and other wave bands as the carrier of communication information, and uses the atmosphere / sea water / free space as the transmission medium for information transmission. Due to the rapid development of optical communication technology and the wide application of wireless sensor technology, the corresponding wireless optical sensor network is also applied. The wireless optic...

AI Technical Summary

Problems solved by technology

However, the current LEACH protocol has the following deficiencies: the election of cluster head nodes is performed in a random manner, the remaining energy of nodes is not taken into account, the idea of ​​uniform clustering is adopted, and the size of the cluster radius is not considered, resulting in energy consumption of nodes Uneven, the energy consumption of individual nodes is too fast, which shortens the survival time of the network and reduces the stability of the network topology

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