ETC: Energy-Driven Tree Construction in Wireless Sensor Networks
Panayiotis C. Andreou, Andreas Pamboris, Demetrios Zeinalipour-Yazti, Panos K. Chrysanthis, George Samaras · 2009
Continuous queries in wireless sensor networks (WSNs) are founded on the premise of query routing tree structures (denoted as T), which provide sensors with a path to the querying node. Predominant data acquisition systems for WSNs construct such structures in an ad-hoc manner and therefore there is no guarantee that a given query workload will be distributed equally among all sensors. That leads to data collisions which represent a major source of energy waste. In this paper we present the energy-driven tree construction (ETC) algorithm, which balances the workload among nodes and minimizes data collisions, thus reducing energy consumption, during data acquisition in WSNs. We show through real micro-benchmarks on the CC2420 radio chip and trace-driven experimentation with real datasets from Intel Research and UC-Berkeley that ETC can provide significant energy reductions under a variety of conditions prolonging the longevity of a wireless sensor network.