VNTS: A Virtual Network Traffic Shaper for Air Time Fairness in 802.16e Systems
VNTS: A Virtual Network Traffic Shaper for Air Time Fairness in 802.16e Systems
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DOI：
10.1109/icc.2010.5502484
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发表时间：
2010-05
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影响因子：
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通讯作者：
G. Bhanage;Ronak Daya;I. Seskar;D. Raychaudhuri
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作者：
G. Bhanage;Ronak Daya;I. Seskar;D. Raychaudhuri
用于宽带无线接入的802.16e标准要求QoS等级的存在，但没有指定用于调度器实现的指导方针或用于确保空中时间公平性的机制。我们的研究表明，控制下行链路的空中通话时间的公平切片，同时运行在一个专有的WiMAX基站（BS）调度的可行性。我们设计并实现了一个虚拟化的基础设施，允许用户获得至少一个分配的BS资源的饱和度和链路退化的存在的百分比。使用内核虚拟机创建切片和点击模块化路由器实现虚拟网络流量整形引擎，我们表明，它是可以自适应地控制切片使用WiMAX基站上的下行链路流量。公平性指数和耦合系数显示了高达42%的改善，和73%的初步室内步行移动性实验。室外车辆测量结果表明，公平性指数和耦合系数分别提高了27%和70
The 802.16e standard for broadband wireless access mandates the presence of QoS classes, but does not specify guidelines for the scheduler implementation or mechanisms to ensure air time fairness. Our study demonstrates the feasibility of controlling downlink airtime fairness for slices while running above a proprietary WiMAX basestation (BS) scheduler. We design and implement a virtualized infrastructure that allows users to obtain at least an allocated percentage of BS resources in the presence of saturation and link degradation. Using Kernel virtual machines for creating slices and Click modular router for implementing the virtual network traffic shaping engine we show that it is possible to adaptively control slice usage for downlink traffic on a WiMAX Basestation. The fairness index and coupling coefficient show an improvement of up to 42%, and 73% with preliminary indoor walking mobility experiments. Outdoor vehicular measurements show an improvement of up to 27%, and 70% with the fairness index and coupling coefficient respectively