摘要
提出一种基于区分服务的拥塞控制机制(DiffServ congestion control,DSCC)用于解决Mesh网拥塞问题。该机制首先对到达节点的实时业务、非实时业务到达率进行周期性的统计,依据统计值对节点下一时段到达的主流业务类型进行预测,同时动态地调整缓存队列长度的阈值以监测拥塞。最后DSCC根据未来到达的主流业务类型,自适应地为节点设定传输避让指数,公平有效地缓解了网络拥塞。实验结果表明DSCC可以显著地缓解拥塞,提高数据传输性能。
This paper proposed a DiffServ-based congestion control mechanism （DSCC） to solve the congestion challenge of Mesh wireless network. The mechanism recorded the arrival rates of real-time tasks and non-real-time tasks periodically, which was used to predict the mainstream type of arriving tasks. DSCC dynamically adjusted the threshold value of length of buffer queue to monitor congestion. DSCC could adaptively set the value of transmission collision avoidance index within different de- gree adjustment according to the predicted situation. DSCC was proved to be a fair and effect way to easing congestion. The simulation results demonstrate that, DSCC can efficiently relief congestion and improve communication performance.
出处
《计算机应用研究》
CSCD
北大核心
2014年第9期2811-2814,共4页
Application Research of Computers
基金
江苏省科技支撑计划(工业)资助项目(BE2011186)
