通过异构无线信道上多个业务类别的聚合调度提供可靠的服务质量

S. Ahmad, M. Qadir, M. Akbar
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引用次数: 2

摘要

本文分析了端到端(E2E)延迟变化对分组分布在多模移动终端(MMT)多条链路上的剥离会话的影响。该分析的结果表明,当穿越多个无线网络到达目的地时,最小化属于流的数据包的乱序(OOS)到达的重要性。然后,我们提出了一种多服务器延迟预算排序(MDO)调度方案,该方案根据MMT的多个接口的剩余延迟预算度量来调度积压的数据包。在该方案中,通过降低延迟波动影响的链路排序功能,将端到端延迟变化对有序数据包到达的影响降至最低。仿真结果表明,该方案在端到端延迟变化、数据包丢包率、端到端吞吐量和顺序到达方面具有一致的高性能指标,这对于在上行或/和下行路径的MMT设备上运行的交互式/实时和缓冲视频流非常理想。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Dependable quality-of-service provisioning through aggregate scheduling of multiple service classes on heterogeneous wireless channels
In this paper, we analyze the impact of end-to-end (E2E) delay variation on stripped sessions, whose packets are distributed over multiple links of multi-mode mobile terminal (MMT). The results of this analysis signify the importance of minimized out-of-sequence (OOS) arrival of packets belonging to a stream, while traversing through multiple radio networks to reach their destination. We, then propose a multi-server delay-budget ordered (MDO) scheduling scheme, that schedules back-logged packets on multiple interfaces of MMT according to their residual delay-budget metrics. In the proposed scheme, the impact of E2E delay variation on in-order packet arrival has been minimized through a link ranking function that reduces the impact of delay fluctuations. The simulation results show a consistently high performance metrics for the scheme with respect to end-to-end delay variations, packet drop rate, E2E throughput and in-order arrival which are highly desirable for interactive/ live, and buffered video streams running on MMT devices in uplink or/and downlink paths.
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