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Consistent high growth of Indian economy has resulted in a surging demand for energy. Since, independence Indian power system has grown from 1362 MW to 250GW. In the past decade, installation of renewable sources of energy for electricity has grown at an annual rate of 25%, which has reached 29,500 MW as on March 2014. Despite this, presently 400 million people in the country have no access to electricity...
A common application of unattended sensor networks (WSN) is low data rate streaming from many scattered sensors to one or more sink nodes. To meet the stringent requirement of prolonged WSN lifetime, we introduce a new notion of statistical reliability for data streaming applications and propose several variants of stop-and-wait hop-by-hop ARQ with explicit and implicit ACKs. The energy-efficiency...
In this paper, we describe the design and the implementation of a management system called SRM for controlling data reliability in Wireless Sensor Networks. SRM is based on a hierarchical management architecture and policy-based network management paradigm. SRM consists of four modules: a user policy specification module, an evaluation module, a decision making module and an action module. The interaction...
We derive two new energy efficient reliable data transport protocols for overcoming the negative impact of asymmetric radio links in wireless sensor networks. The energy efficiency of these algorithms is explicitly derived using our theoretical model, and validated by results obtained from simulations and field trials. The analytical, simulation and field trials demonstrate that our proposed protocols...
We propose an efficient reliable data collection(eRDC) algorithm. The eRDC is designed for energy-constraint wireless sensor networks (WSN) to balance reliability and energy consumption. We derive energy efficiencies of the proposed reliability schemes, and evaluate their performances. These analyses provide a guideline to determine the number of retransmissions for reliable data delivery. Dynamic...
Our previous study comparing analytically a comprehensive set of reliable data streaming protocols has shown that an hybrid protocol comprising stop-and-wait hop-by-hop ARQ with implicit ACK (SW HBH iACK ARQ) and event-to-sink reliable transport (ESRT) is the best energy-efficient generic transport protocol for wireless sensor networks. The implementation of this hybrid protocol requires better understanding...
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