期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2014
卷号：59
期号：3
出版社：Journal of Theoretical and Applied
摘要：Wireless Sensor Network (WSN) consists of hundreds or thousands of sensor nodes which have limited energy, computation and memory resources. These sensors are randomly deployed in a specific area to collect useful information periodically for few months or even few years. The applications of WSN in some extreme environment make sensor nodes difficult to replace once the battery lifetime expires. Since the wireless transmission is the most energy consuming operation, designing an energy efficient routing protocol becomes the main goal for the wireless sensor network. LEACH is considered as the most popular routing protocol which has better performance in saving the energy consumption. However, the cluster head choosing formula neglects the change of node�s energy will make the nodes acting as cluster heads too many times leading the cluster head die early by consuming too much energy. This paper presents K means clustering approach for clustering and a two level fuzzy logic approach to Cluster Head (CH) election based on four parameters namely - number of neighbor nodes, remaining energy, energy dispersion and distance from the base station. The proposed method has proved that it prolong the network lifetime than the LEACH protocol by comparison simulations using Matlab.
关键词：Wireless Sensor Networks; Clustering; LEACH; K means; Fuzzy Logic
