摘要
The MAC layer in IEEE802.16 is designed to differentiate service among traffic categories with different multimedia requirements.In this paper,a scheduling algorithm at MAC layer for multiple connections with diverse QoS requirements is proposed.As for this algorithm,each connection is assigned a priority,which is updated dynamically based on its service status concluding queue characteristic and channel state.A connection with the highest priority is scheduled each time.Analytical model is developed by assuming a Finite State Markov Chain(FSMC)channel model.Simulation results show that the proposed scheduling algorithm can improve the performance of mean waiting time and throughput in broadband wireless networks.
The MAC layer in IEEE802.16 is designed to differentiate service among traffic categories with different multimedia requirements. In this paper, a scheduling algorithm at MAC layer for multiple connections with diverse QoS requirements is proposed. As for this algorithm, each connection is assigned a priority, which is updated dynamically based on its service status concluding queue characteristic and channel state. A connection with the highest priority is scheduled each time. Analytical model is developed by assuming a Finite State Markov Chain （FSMC） channel model. Simulation results show that the proposed scheduling algorithm can improve the performance of mean waiting time and throughput in broadband wireless networks.
出处
《信息通信技术》
2009年第4期44-49,共6页
Information and communications Technologies
关键词
多媒体
通信
运算法则
MAC
IEEE 802.16 Broadband Wireless Access System （BWA）
Quality of Service （QoS）
Finite State Markov Chain （FSMC） Charmel Model
Scheduling Algorithm
Mean Waiting Time
Throughput
