An improvement of LEACH protocol based on energy and density

A new cluster head selection mechanism was proposed according to the classical low energy adaptive clustering hierarchy(LEACH) protocol.In the new algorithm,the cluster head selection was optimized by considering residual energy of nodes and density parameters of nodes comprehensively.Meanwhile,the relationship between cluster head load balancing and network lifetime was weighed to get an optimum weighting factor.The simulation results showed that,compared with LEACH algorithm,the proposed algorithm prolonged the death time of the first node by 19.6% when the simulation area was 100 m×100 m and the number of nodes was 100.The number of remaining nodes in the network after 500 rounds was more than 5 times that of LEACH algorithm,which improved the energy consumption of nodes and the whole network lifetime effectively