Performance evaluation of the wireless sensor with renewable energy, impatience, and heterogeneous energy requirements

Abstract

Wireless sensors are utilised to transmit data through the wireless sensor network. The authors consider wireless sensors with a limited energy capacity that needs the energy to complete the transmission service. To extend the lifetime of the wireless sensor, it is assumed that the renewable energy resource, e.g. solar energy, is collected via the energy harvesting method. In order to provide a better bit error rate or data rate, the energy requirement of a packet may be more than one unit of energy. Furthermore, a packet may leave without finishing the service due to impatience if the patient interval is exceeded. They focus on one wireless sensor with one server and two finite queues: one packet queue and one energy queue. In the authors’ system, there are two classes of impatient customers, and each customer has to consume one or two units of energy to finish the service. First, they derive the analytical model for the considered system and find the steady-state probability distribution and performance measures of interest. Next, the impacts of different system parameters on the performance measures are studied. Last but not least, the analytical results are shown to be in good agreement with the simulation results.