Adaptive Cluster Head probability for LEACH protocol
LEACH (Low-Energy Adaptive Clustering Hierarchy) protocol is one of the clustering routing protocols in wireless sensor networks. The advantage of LEACH is that each node has the equal probability to be a cluster head. The LEACH  protocol is an elegant solution to data collection problem, where a small number of clusters are formed in a self-organized manner. Generally nodes consume more energy as cluster head than non-cluster head for transmitting the data. This energy consumption also increases as distance increases from Base Station (BS). So, assigning the same probability for electing as Cluster Head for all the nodes can lead to uneven energy consumption. In this paper, we proposed Distance based probability for Cluster Head election (D-LEACH) to make uniform energy consumption of Cluster Heads (CHs), which makes the routing protocol more energy efficient and prolongs life time of a wireless sensor network. Simulation results show that D-LEACH improves network life time compared to LEACH.
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