Research On Uneven Clustering Routing Algorithms For Wireless Sensor Networks

In recent years, the rapid development of Internet of things further promotes thedevelopment of wireless sensor network. At present, the wireless sensor network hasbeen widely used in military, environmental monitoring, medical, industrial andagricultural fields. Wireless sensor network is a self-organizing network system withlots of cheap wireless sensor nodes by wireless communication. WSNs have thecharacteristics of large numbers, wide distribution and limited resources. Among them,the node energy limited is one of the most notable features.Therefore, making full useof the energy is the prime aim to prolong the survival time of the network in designingWSN. Related studies have proved that, clustering routing algorithm is one of the mosteffective ways to save network energy, improve energy efficiency, prolong the survivaltime.Aiming to alleviate difference of the energy consumption cased by differentcommunication distance in single hop network, this paper presents an uneven clusteringrouting algorithm UCSH which suitable for single hop communication network. Thealgorithm introduces the concept of the unit energy consumption to measure energyefficiency of a cluster. UCSH attempts to control the total energy in a cluster to alleviatethe problem of uneven energy consumption produced by different communicationdistance. The simulation results show that compared with LEACH algorithm, UCSHalgorithm can effectively improve the network energy efficiency and ease the problemof unbalanced network energy consumption to prolong survival time of the network.In multi-hop communication network, an uneven clustering routing algorithmUCMH is proposed to solve "hot spot" problem. The algorithm layers network and eacharea is roughly equal and with an approximately equal network energy. UCMHalgorithm analysis energy consumption on each layer of the network and optimizes thecluster radius of each layer, to achieve a balanced energy consumption of the network.Then, the concept of the positive unit energy consumption is introduced in UCMH, tomeasure energy efficiency of routing link. The cluster head regards the unit energyconsumption as the basis for the routing node selection, to improve the routingefficiency. Simulation results show that UCMH algorithm has good networkperformance, which can effectively improve the network energy efficiency in balancingnetwork energy efficiency at the same time.