ARRDA: Adaptive Reliable Routing for QoS based Data Aggregation in Wireless Sensor Networks

In heterogeneous sensor networks, multiple events may occur simultaneously that have different QoS requirements. Adaptive Reliable Routing for QoS based Data Aggregation (ARRDA) method is presented that allows to route the aggregated data from simultaneous events reliably to the sink based on their flow specification. On detection of an event type with a particular specification, an adaptive aggregation tree is established from the source to the sink that can satisfy the QoS specification. Implicit acknowledgement mechanisms are used to ensure reliability. Simulation results show that the ARRDA incurs low communication cost, energy and delay in comparison with SASR [1].