Two thresholds working vacation policy for improving energy consumption and latency in WSNs

Abstract

Motivated by the need of an efficient energy-saving scheme in Wireless Sensor Networks (WSNs), several works considered variants of vacation queueing models with N-policy which is designed as an efficient queued wakeup scheme for improving the lifetime of WSNs. However, it can have a significant negative impact on the latency delay of data packets. The aim of the present paper is to propose an energy saving and latency efficiency technique for full-duplex wireless sensor nodes, based on a combination of normal vacation and working vacation policy, that we called the two thresholds working vacation policy. Moreover, we propose the modeling and the performance analysis of the new queueing vacation policy using the Generalized Stochastic Petri Nets formalism. To this end, we developed the formulas of the main stationary performance indices and energy consumption. Finally, we give a detailed analysis that proves the efficiency of the proposed approach.