CORE:针对IEEE 802.16 MeSH模式的集中优化路由扩展

P. Mogre, Nico d'Heureuse, M. Hollick, R. Steinmetz
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引用次数: 8

摘要

IEEE 802.16标准规定了一种MeSH模式,该模式允许部署支持运营商级QoS的无线MeSH网络。这种规划的WMN的网络运营商感兴趣的是使WMN中允许的流量最大化,同时支持QoS。近年来,网络编码已成为提高无线网络吞吐量的一种很有前途的技术。本文提出了CORE,它解决了通过网络编码来共同优化路由、调度和节省带宽的问题。之前的解决方案要么不适用于802.16 MeSH,要么计算成本太高,无法在现实场景下实际应用于WMN。相比之下,COREpsilas启发式能够在操作员可定义的最大计算成本内计算上述问题的解决方案,从而实现计算和近实时部署计算出的解决方案。我们通过全面的模拟研究分析了COREpsilas启发式算法的性能,该研究涵盖了wmn的典型使用场景。结果表明,CORE能够以最小的计算成本显著增加允许的流量数量。此外,结果还提供了在不同使用场景中可以获得的增益限制因素的见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
CORE: centrally optimized routing extensions for the IEEE 802.16 MeSH mode
The IEEE 802.16 standard specifies a MeSH mode which permits the deployment of Wireless Mesh Networks (WMNs) supporting carrier-grade QoS. The network operator for such planned WMNs is interested in maximizing the traffic admitted in the WMN and simultaneously supporting QoS. Recently network coding has emerged as a promising technique for increasing the throughput in WMNs. This paper proposes CORE, which addresses the problem of jointly optimizing the routing, scheduling, and bandwidth savings via network coding. Prior solutions are either not applicable in the 802.16 MeSH or computationally too costly to be of practical use in the WMN under realistic scenarios. COREpsilas heuristics, in contrast, are able to compute solutions for the above problem within a operator definable maximum computational cost, thereby enabling the computation and near real-time deployment of the computed solutions. We analyze the performance of COREpsilas heuristics via a thorough simulation study covering the typical usage scenarios for WMNs. The results presented demonstrate that CORE is able to increase the number of flows admitted considerably and with minimal computational costs. Further, the results provide insights into limiting factors for the gains which can be obtained in different usage scenarios.
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