—The IEEE 802.16 standard (commonly known as WiMAX), which has emerged as a broadband wireless access technology, is capable of delivering very high data rates. The grant/request mechanism in IEEE 802.16e MAC provides different Quality of Service (QoS) for different service flows. The purpose of this paper is to analyze IEEE 802.16e medium access control (MAC) sublayer and provides a simple analytical model to compute the 802.16e MAC throughput. Our approach is to begin