Bernoulli Arrival-Based Sleep Mode in WiMAX 2

As an enhancement of IEEE 802.16e, IEEE 802.16m can save more energy. Considering the digital nature of the networks and regarding the initial sleep window as one half of the subsequent sleep window, in this chapter, we build a discrete-time queueing model with multiple heterogeneous vacations to analyze communication networks using the IEEE 802.16m protocol. We first describe the working principle of this system model, and then present an analytical approach to analyze the sleep mode in the steady state. By using a discrete-time embedded Markov chain, we derive performance measures of the system in terms of the average response time of data packets and the energy saving rate of the system, respectively. Finally, we present numerical results to investigate the influence of the sleep cycle and the arrival rate of data packets on the performance of the system using the sleep mode in IEEE 802.16m.