Topology construction method for heterogeneous wireless sensor networks based on energy prediction

Abstract

The invention relates to a clustering tree topology construction method for heterogeneous wireless sensor networks (HWSNs) based on energy prediction. The clustering tree topology construction method comprises the steps: 1) analyzing and estimating the network average residual energy value of the next round according to the average residual energy and the energy difference value of the whole network in ideal conditions; 2) selecting a cluster head based on communication cost, guiding the cluster forming process by combination of node energy, link reliability and node spacing; and 3) selecting a suitable node as a relay node among the nodes in the cluster after forming of the cluster, and then transmitting the data to the cluster head. The clustering tree topology construction method for heterogeneous wireless sensor networks (HWSNs) based on energy prediction can obtain an optimal clustering tree topology network based on the precondition of less energy consumption when the heterogeneous wireless sensor networks are in the initial state so that energy consumption is saved and simultaneously the life cycle of networks is prolonged as long as possible.

Description

【Technical field】 [0001] The invention relates to a method for constructing a wireless sensor network, in particular to a method for constructing a topology of a heterogeneous wireless sensor network based on energy prediction, and belongs to the technical field of wireless sensor networks. 【Background technique】 [0002] Wireless Sensor Networks (Wireless Sensor Networks, WSNs) is a wireless ad hoc network, which consists of a large number of resource-constrained sensor nodes. Based on the characteristics of WSNs, a large number of monitoring problems can be flexibly solved at a lower cost, especially in some dangerous areas. Nodes need to consume a lot of energy in network communication, data processing, etc., and the energy of nodes is not easy to be replenished in time. Therefore, how to reduce energy consumption and extend the network lifetime as much as possible is an urgent problem for WSNs. Topology control is one of the effective means to solve such problems, and ...

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Problems solved by technology

[0005] In order to solve the above-mentioned technical problems, the object of the present invention is a method for constructing a clustering tree topology suitable for heterogeneous wireless sensor networks based on energy prediction, which can effectively utilize node energy in a complex heterogeneous network environment, thereby The problem of extending the life cycle of the network

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