An Enhancement of Sleep Mode Operation in IEEE 802.16e Systems

IEEE 802.16e has specified sleep mode operations depending on different types of power saving class for the purpose of energy saving. To solve the inefficient problem of multiple power saving classes over the same MS, this paper proposes an enhanced method to minimize the energy consumption of the MS as a whole while keeping the QoS requirements satisfied. Performance improvement of the proposed method has been validated in a developed WiMAX simulation platform based on ns-2 network simulator.