A new QoS Guarantee Strategy in IEEE802.16 MAC Layer

IEEE 802.16, a standard for wireless MAN broadband access technology, provides a flexible QoS mechanism in MAC layer for wild variety classes of services. However, it fails to define specific admission control strategy and scheduling algorithm, therefore, those aspects about QoS guarantee mechanisms are becoming the research hotspot in recent years. In this paper, focusing on the features of services defined in IEEE 802.16, including UGS, ertPS, rtPS, nrtPS and BE, We propose a new admission control strategy based on the minimum reserved bandwidth and design a scheduling algorithm to ensure the implement of this strategy. Finally, we simulate the admission strategy and the algorithm on NS2 platform to validate their effectiveness.