Enabling Energy Efficient Sensory Data Collection with Mobile Sink
K Rahmaan, M. Narendran · 2012
nowadays the usages of Wireless Sensor Networks will get rapidly increased. A large class of Wireless Sensor Networks (WSN) applications involves a set of isolated urban areas (e.g. building blocks) covered by sensor nodes (SNs) monitoring environmental parameters. Mobile sinks (MSs) mounted upon urban vehicles with fixed paths provide the ideal infrastructure to effectively retrieve sensory data from such isolated WSN fields. Existing methodologies involve either single-hop transfer of data from SNs that lie within the MS's range or heavy involvement of network periphery nodes in data retrieval, handling, buffering, and delivering tasks. Our proposed algorithm aims at reducing the overall network overhead and energy expenditure associated with the multihop data retrieval process while also ensuring balanced energy consumption among SNs and prolonged network lifetime. This is achieved through building cluster structures consisted of member nodes that route their measured data to their assigned cluster head (CH). Simulation results confirm the effectiveness of our approach against as well as its performance gain over alternative methods.