Abstract—Wireless sensor networks (WSNs) consist of battery operated tiny sensor nodes and connected in a network for communication. Improving the lifetime of sensor network and energy conservation are the critical issues in WSNs. Nodes closer to the sink node drains their energy faster due to continuous and larger transmission of data towards a sink node. Dynamic Sinks solve the problem of lifetime and energy in WSNs. It moves dynamically to particular positions among the different positions in a predetermined order to collect data from sensor nodes. There is a considerable delay in the case of single mobile sink. In this paper we use the concept of multiple Dynamic sinks to collect data in different zones which in turn coordinate to consolidate the data and complete the process of receiving data from all the sensor nodes. A distributed algorithm synchronizes all dynamic sinks and it is used to reduce delay in consolidation of data and reduces the overall energy consumption. This twin gain increases the lifetime of wireless sensor network and it reduces delay. Simulation results using multiple dynamic synchronized Sinks clearly show that there is an improvement of the lifetime and energy conservation of wireless sensor networks in comparison with single mobile sink and static sink.
Index Terms—Energy efficiency, lifetime maximization, multiple dynamic sink, sojourn time and wireless sensor networks.
H. Sivasankari and K. R. Venugopal are with the Department of Computer Science and Engineering, University Visvesvaraya College of Engineering, Bangalore University, Bangalore 560 001, India.
L. M. Patnaik is with the Indian Institute of Science (IISc), Bangalore, India (e-mail: email@example.com).
Cite: H. Sivasankari, K. Shaila, K. R. Venugopal, and L. M. Patnaik, "Multiple Dynamic Sinks to Maximize the Lifetime and Conservation of Energy in Wireless Sensor Networks," International Journal of Computer Theory and Engineering vol. 4, no. 1, pp. 67-75, 2012.