Tran Cong Hung1
and Ly Quoc Hung2
1
Posts and Telecommunications Institute of Technology
2Ho Chi Minh Technical and Economic College
ABSTRACT
In the traditional clustering routing protocol of wireless sensor network, LEACH protocol (Low Energy
Adaptive Clustering Hierarchy) is considered to have many outstanding advantages in the implementation
of the hierarchy according to low energy adaptive cluster to collect and distribute the data to the base
station. The main objective of LEACH is: To prolong life time of the network, reduce the energy
consumption by each node, using the data concentration to reduce bulletins in the network. However, in the
case of large network, the distance from the nodes to the base station is very different. Therefore, the
energy consumption when becoming the host node is very different but LEACH is not based on the
remaining energy to choose the host node, which is based on the number of times to become the host node
in the previous rounds. This makes the nodes far away from the base station lose power sooner.
In this paper, we give a new routing protocol based on the LEACH protocol in order to improve operating
time of sensor network by considering energy issues and distance in selecting the cluster-head (CH), at that
time the nodes with high energy and near the base station (BS) will have a greater probability of becoming
the cluster-head than the those in far and with lower energy.
KEYWORDS
LEACH, Life-time, Energy efficient, WSN, Matlab.
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