摘要
随着地面无线通信技术的高速发展,无线通信网络将承载越来越多的高速多媒体业务,为使用户获得良好的业务体验,需要为其提供灵活可靠的服务质量保障。高速业务流的调度方法作为系统Qo S保障的重要一环。传统业务调度方法有的仅考虑业务流的绝对优先级、有的依据业务包等待时延的长短进行调度,这些方法缺乏随信道质量及吞吐量变化情况的动态调控能力。针对上述问题,提出一种改进型的M-LWDF动态调度方法,通过引入公平性参数与优先级参数,提升业务调度器的性能。通过仿真验证,改进后的动态调度方法可以使业务流获得更好的时延及抖动指标。
With the rapid development of wireless communication technology, wireless communication network will carry more and more high-speed multimedia services. It requires a flexible and reliable QoS function to provide users with a good service experience. The scheduling method of high speed traffic flow is an important part of QoS system. The traditional traffic schedule algorithms only consider the absolute priority of the traffic flows, or the waiting time before the packets scheduled. These methods lack the ability of dynamic regulation with the change of channel quality and traffic throughput. In view of the above problems, an improved M-LWDF dynamic scheduling method is proposed. By introducing the fairness parameter and priority parameter, improve the performance of the traffic scheduler. The simulation results show that the improved dynamic scheduling method can make the traffic flows get better delay and jitter index.
出处
《电子设计工程》
2016年第22期26-29,共4页
Electronic Design Engineering
