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针对无线信道中与时间和位置相关性错误,文章简要介绍了I EEE 802.16d协议的QoS服务模型,在对WiMAX的QoS机制和调度策略进行了深入的研究后,提出了一种新的MAC层分级分组调度架构。该架构主要由调度控制器、流量监控和两级分组调度组成,并给出了关键调度的算法模型。对算法的仿真表明,这个调度架构能够有效地区分对待实时业务、非实时业务和BE业务,满足不同类型业务的QoS需求,解决了无线信道特殊性带来的调度问题。
Aiming at the error related to time and location in wireless channel, this paper briefly introduces the QoS service model of IEEEE 802.16d protocol. After a deep research on QoS mechanism and scheduling strategy of WiMAX, a new MAC layer Hierarchical packet scheduling architecture. The architecture is mainly composed of scheduling controller, traffic monitoring and two-level packet scheduling, and gives the algorithm model of key scheduling. The simulation results show that the proposed scheduling architecture can effectively distinguish between real-time services, non-real-time services and BE services and meet the QoS requirements of different types of services, and solve the scheduling problem caused by the particularity of wireless channels.