An Enhanced PEGASIS Algorithm with Mobile Sink Support for Wireless Sensor Networks

Author:

Wang Jin1ORCID,Gao Yu2,Yin Xiang2,Li Feng1,Kim Hye-Jin3ORCID

Affiliation:

1. School of Computer & Communication Engineering, Changsha University of Science & Technology, China

2. School of Information Engineering, Yangzhou University, China

3. Business Administration Research Institute, Sungshin W. University, Republic of Korea

Abstract

Energy efficiency has been a hot research topic for many years and many routing algorithms have been proposed to improve energy efficiency and to prolong lifetime for wireless sensor networks (WSNs). Since nodes close to the sink usually need to consume more energy to forward data of its neighbours to sink, they will exhaust energy more quickly. These nodes are called hot spot nodes and we call this phenomenon hot spot problem. In this paper, an Enhanced Power Efficient Gathering in Sensor Information Systems (EPEGASIS) algorithm is proposed to alleviate the hot spots problem from four aspects. Firstly, optimal communication distance is determined to reduce the energy consumption during transmission. Then threshold value is set to protect the dying nodes and mobile sink technology is used to balance the energy consumption among nodes. Next, the node can adjust its communication range according to its distance to the sink node. Finally, extensive experiments have been performed to show that our proposed EPEGASIS performs better in terms of lifetime, energy consumption, and network latency.

Funder

National Natural Science Foundation of China

Publisher

Hindawi Limited

Subject

Electrical and Electronic Engineering,Computer Networks and Communications,Information Systems

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