Performance analysis of an energy saving mechanism in the IEEE 802.16e wireless MAN

We propose an enhance model for performance analysis of an energy saving mechanism in the IEEE 802.16e broadband wireless access (BWA) network. A mobile subscriber station goes to sleep-mode after negations with the base station and temporarily wake-up periodically for a short interval to check whether there is downlink traffic to it to decide whether it goes to wake-mode or continues to be in the sleep-mode. The sleep interval is increased exponentially upon no arrival traffic. We analytically model the sleep-mode scheme and validate the model with simulations. Our enhanced model considers both incoming frames and outgoing frames.