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首页> 外文期刊>Eurasip Journal on Wireless Communications and Networking >Channel condition self-clocked packet scheduling scheme for wireless networks
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Channel condition self-clocked packet scheduling scheme for wireless networks

机译:无线网络的信道条件自时钟分组调度方案

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摘要

Since mobile hosts suffer from burst and location-dependent channel errors in wireless networks, packet fair queueing algorithm in wireline networks cannot be applied directly to wireless networks. Generally, a fair scheduler in a wireless network retains the virtual time of flow when the flow encounters channel errors. This results to the flow having higher priority when it exits from errors, and the system can compensate the lost service for the flow. This causes the lagging flows to capture the shared channel and affects the queueing delay of flows perceiving a clean channel. In this paper, we present a channel condition self-clocked packet scheduling scheme. This algorithm can address the problem and achieve the following goals: (1) steady delay and jitter for flows perceiving an error-free environment, (2) delay and throughput guarantees in an error-free environment, (3) short-term fairness among flows perceiving an error-free environment, and (4) long-term fairness for error system. Our algorithm is based on start-time fair queueing, and the virtual time of flows is reset to contend for forwarding its packet the next time when errors happen for the flow.
机译:由于移动主机在无线网络中遭受突发和位置相关的信道错误的困扰,因此有线网络中的分组公平排队算法无法直接应用于无线网络。通常,当流遇到信道错误时,无线网络中的公平调度器会保留虚拟的流时间。这导致流在退出错误时具有更高的优先级,并且系统可以为流补偿丢失的服务。这导致滞后的流捕获共享信道,并影响感知干净信道的流的排队延迟。在本文中,我们提出了一种信道条件自时钟分组调度方案。该算法可以解决该问题并实现以下目标:(1)感知无错误环境的流具有稳定的延迟和抖动;(2)在无错误环境中的延迟和吞吐量保证;(3)短期公平性流程感知无错误环境,以及(4)错误系统的长期公平性。我们的算法基于开始时间公平队列,并且将流的虚拟时间重置为竞争,以便下次在流发生错误时转发其数据包。

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