旅客列车车-地宽带互联的流量管理
发布时间：2019-01-29 05:46
【摘要】：为支持旅客列车车-地宽带互联更为有效的流量管理,提出了一种基于ON/OFF模型的Internet流量模型,并设计了相应的流量管理策略和预取访问算法。首先论证了旅客列车车-地宽带互联系统中用户会话请求的到达过程为泊松过程,然后通过系列仿真实验模拟了车-地宽带互联的流量分布,并构建实验床采集实测流量进行验证,结果表明基于泊松到达过程的流量模型能较好地反映车-地宽带互联的流量特性,并较好地服从Inv Gaussian分布。然后进一步引入了预取策略,大幅降低了车-地宽带互联系统的请求拒绝率和流量损失,提高了系统的吞吐率。
[Abstract]:In order to support more effective flow management of passenger train vehicle-ground broadband interconnection, a Internet traffic model based on ON/OFF model is proposed, and the corresponding flow management strategy and prefetching access algorithm are designed. It is demonstrated that the arrival process of the user's session request in the passenger train vehicle-ground broadband interconnection system is a Poisson process, and then the flow distribution of the vehicle-ground broadband interconnection is simulated by a series of simulation experiments. The results show that the flow model based on Poisson's arrival process can better reflect the flow characteristics of vehicle-ground broadband interconnection, and it can be well distributed from Inv Gaussian. Furthermore, a prefetching strategy is introduced, which greatly reduces the request rejection rate and traffic loss of the vehicle-ground broadband interconnection system, and improves the throughput of the system.
【作者单位】： 中南大学信息科学与工程学院;福建工程学院下一代互联网应用技术研究中心;
【基金】：国家自然科学基金(61101139) 福建省杰出青年科技人才培养基金(JA10212)
【分类号】：TP393.06
[Abstract]:In order to support more effective flow management of passenger train vehicle-ground broadband interconnection, a Internet traffic model based on ON/OFF model is proposed, and the corresponding flow management strategy and prefetching access algorithm are designed. It is demonstrated that the arrival process of the user's session request in the passenger train vehicle-ground broadband interconnection system is a Poisson process, and then the flow distribution of the vehicle-ground broadband interconnection is simulated by a series of simulation experiments. The results show that the flow model based on Poisson's arrival process can better reflect the flow characteristics of vehicle-ground broadband interconnection, and it can be well distributed from Inv Gaussian. Furthermore, a prefetching strategy is introduced, which greatly reduces the request rejection rate and traffic loss of the vehicle-ground broadband interconnection system, and improves the throughput of the system.
【作者单位】： 中南大学信息科学与工程学院;福建工程学院下一代互联网应用技术研究中心;
【基金】：国家自然科学基金(61101139) 福建省杰出青年科技人才培养基金(JA10212)
【分类号】：TP393.06
【参考文献】
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