Proportional Delay Differentiation in Multi-hop Wireless Networks

Hyunduk Jung, Hun-je Yeon, Jaiyong Lee
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引用次数: 3

Abstract

In this paper, we propose MWTP (Multi-hop Waiting Time Priority) scheduler to guarantee proportional delay differentiation in a multi-hop wireless network with contention- based MAC protocol. The existing single-hop delay differentiation schedulers can not differentiate the contention delay suffered at multi-hop links, and whole delay differentiation accuracy is destroyed in the multi-hop wireless communications. MWTP marks packets with departing time at the upstream node to decide scheduling order at the downstream node. The marked departing time becomes a reference point of waiting time in the scheduling process. Analysis and simulation results support that MWTP guarantees more accurate delay differentiation than existing schedulers.
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多跳无线网络中的比例时延划分
在基于争用MAC协议的多跳无线网络中,我们提出了MWTP(多跳等待时间优先级)调度程序,以保证时延的比例分化。现有的单跳时延区分调度器不能区分多跳链路上的争用时延,破坏了多跳无线通信的整体时延区分精度。MWTP在上游节点标记数据包的出发时间,以决定下游节点的调度顺序。标记的发车时间成为调度过程中等待时间的参考点。分析和仿真结果支持MWTP比现有调度程序保证更精确的延迟区分。
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