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 Research on Optimal Cluster Number of LEACH Routing Protocol

  

  1. College of Electronic and Electrical Engineering, Baoji University of Arts and Sciences, Baoji 721007, China
  • Received:2015-03-09 Online:2015-09-21 Published:2015-09-24

Abstract:

Lower Energy Adaptive Clustering Hierarchy (LEACH) is a wireless sensor network routing protocol. It randomly and circularly selected information and
established clustering to reduce data volume, which is for the sake of evenly distributing the energy of the nodes in the network, but it did not consider the number of cluster
head nodes which selected whether met the optimum value. First, in order to avoid effecting the network energy consumption cluster head nodes, it was proposed that determine the
optimal number of cluster heads according to the energy-consuming situation of the nodes in the establishment stage and stable stage, and information sent the information to the
base station by the combined mode of single-hop with multi-hop. Second, According to the method which makes the selected cluster head reasonable combining optimal number of
cluster head with residual energy of nodes optimizes node random number is little used, combined with the nodes to the cluster head distance. The simulation results show that it
could save energy consumption when the number of cluster heads which selected was in the optimal range.

Key words: LEACH protocol, optimal number of cluster heads, energy consumption, life cycle