Real-time performance evaluation of F-BTD scheme for optimized QoS energy conservation in wireless devices

Abstract

This work proposes and elaborates on the realtime implementation and comparative evaluation with other similar schemes of the Fibonacci-based Backward Traffic Difference (F-BTD). The proposed scheme aims to prolong the lifetime of the nodes in real-time for MICA2dot wireless sensor nodes/motes while at the same time it aims at optimizing the QoS and the overall throughput response of each node. The F-BTD scheme allows the nodes to sleep adaptively according to the estimated volume of incoming traffic. By considering the incoming traffic, the selective F-BTD allows each node to adaptively assign a sleep-time duration for each node's cycle by using traffic's backward difference. The F-BTD sleep-time duration associations of each node are then comparatively evaluated in order to define a minimum duty cycle for the next sleep-time slot of the node. The proposed scheme is being evaluated through Real-Time implementation by using the MICA2dot wireless motes that are exchanging resources in a Mobile Peer-to-Peer manner using a specified motion pattern. Comparative performance evaluations with other similar schemes show the efficiency of the proposed scheme in contrast to the nodes' lifetime extensibility. The proposed framework maximizes further the efficiency and reliability of the resource exchange process of the nodes, while it minimizes the energy consumption.