Virtual region based data gathering method with mobile sink for sensor networks
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To solve the hotspot problem in wireless sensor networks, a type of virtual region based data gathering method (VRDG) with one mobile sink is proposed. Network is divided into several virtual regions consisting of three or less data gathering unit. One or more leaders are selected in each region according to their residual energy as well as the distance to all of the neighbors. Only the leaders upload data to sink in data gathering phase that effectively reduce energy consumption and end-to-end delay. Moreover, the “maximum step distance” could be calculated out by nodes to find out the best transmission path to the leader which further balance energy consumption of the whole network. Simulation results show that VRDG is energy efficient in comparing with MSE, SEP and LEACH. It also does well in prolonging network lifetime as well as in enhancing the efficiency of data collection.
KeywordsSensor networks Data gathering Mobile sink Virtual region Balance of energy consumption
The subject is sponsored by the National Natural Science Foundation of P. R. China (61572260, 61672297), Jiangsu Natural Science Foundation for Excellent Young Scholar (BK20160089), Jiangsu Provincial Research Scheme of Natural Science for Higher Education Institutions (14KJB520029), Open Project of Provincial Key Laboratory for Computer Information Processing Technology of Soochow University (KJS1327), Open Project of Jiangsu High Technology Research Key Laboratory for Wireless Sensor Networks (WSNLBZY201517), A Project Funded by the Priority Academic Program Development of Jiangsu Higer Education Institutions(PAPD), Jiangsu Collaborative Innovation Center on Atmospheric Environment and Equipment Technology(CICAEET) and Innovation Project for Postgraduate of Jiangsu Province (SJZZ16_0147, SJZZ16_0149, SJZZ16_015, KYLX15_0842).
Chao Sha proposed the main ideas of the VRDG algorithm while Jian-mei Qiu designed and conducted the simulations of the protocol. Tian-yu Lu and Ting-ting Wang analyzed the data, results and verified the theory. Ru-chuan Wang served as advisor to the above authors and gave suggestions on simulations, performance evaluation and writing. The manuscript write up was a combined effort from the five authors.
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