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A joint experimental and simulation study of the IEEE 802.11s HWMP protocol and airtime link metric

机译:IEEE 802.11s HWMP协议和通话时间指标的联合实验和仿真研究

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摘要

One of the main features of the upcoming IEEE 802.11s standard is the path selection procedure, which is performed by the Hybrid Wireless Mesh Protocol by means of the airtime link metric (ALM). Through a small experimental testbed, and using the open80211s code, which provides one of the most compliant draft implementations, we analysed the impact that the implementation choices of the developers have on the system performance. The analysis revealed that even small deviations from the specified routines (or different choices in the estimation of the parameters used in the online calculation of the ALM) can lead to noteworthy performance degradations. We thus realized some fixes to improve the performance of the system and verified the effectiveness of such amendments in a realistic simulation environment. We then compared the performance of the modified version to the original one. The outcome of the test highlighted the remarkable advantage achieved by the proposed fixes.
机译:即将到来的IEEE 802.11s标准的主要功能之一是路径选择过程,该过程由混合无线网状协议通过通话时间链接度量(ALM)执行。通过一个小型实验性测试平台,并使用open80211s代码(提供了最合规的实现草案之一),我们分析了开发人员的实现选择对系统性能的影响。分析显示,即使与指定的例程有很小的偏差(或在ALM在线计算中使用的参数估计中有不同的选择),也会导致性能显着下降。因此,我们实现了一些改进,以改善系统性能,并在现实的仿真环境中验证了此类修正的有效性。然后,我们将修改后的版本与原始版本的性能进行了比较。测试的结果突出了建议的修复程序所取得的显着优势。

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