TITLE:
Improved Routing in Wireless Sensor Networks Using Harmony Search Algorithm
AUTHORS:
Khadije Rahimkhani, Fatemeh Forouzesh
KEYWORDS:
Wireless Sensor Networks, Routing, Energy Consumption Reduction, Network Lifetime Extension
JOURNAL NAME:
Wireless Sensor Network,
Vol.9 No.9,
September
30,
2017
ABSTRACT:
One of the most important issues of wireless sensor networks is how to transfer
information from the network nodes to a base station and choose the best
possible path for this purpose. Choosing the best path can be based on different
factors such as energy consumption, response time, delay, and data transfer
accuracy. Increasing the network lifetime is the most challenging problem.
One of the latest energy-aware routing methods is to use the harmony search
algorithm in the small-scale sensor networks. The aim of this study is to introduce
the harmony search algorithm as a successful metaheuristic algorithm
for wireless sensor network routing in order to increase the lifetime of such
networks. This study is intended to improve the objective function for energy
efficiency in the harmony search algorithm to establish balance between the
network energy consumption and path length control. Therefore, it is necessary
to choose the initial energy of each node randomly from a certain range
as the path energy consumption should be low to choose a path which can
consider the residual energy. In other words, a path should be chosen to establish
balance between the network energy consumption and the minimum
residual energy. The simulation results indicate that the proposed objective
function provides a longer lifetime by 26.12% compared with EEHSBR.