用于移动WiMAX网络的虚拟化架构

G. Bhanage, I. Seskar, D. Raychaudhuri
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引用次数: 10

摘要

系统虚拟化为共享网络基础设施提供了便利的手段,同时提高了网络基础设施的利用率。本研究解决了商用现成4G移动wimax基站虚拟化的挑战。我们强调了wimax网络架构中为支持单个物理基站上的多个同步虚拟基站所需要的添加和修改。所提出的虚拟基站框架提供的最突出的特性包括在第2层执行所有帧交换的能力,以及提供确保实验可重复性所需的跨片隔离的控制机制。通过在商用WiMAX无线电上进行原型设计,本文展示了虚拟基站系统在移动虚拟网络运营商和测试平台上的应用。展示了一个用例,其中使用虚拟基站设计来评估移动切换方案。展示了另一个用于优化边缘视频传输的用例。视频传输用例用于显示PSNR中高达5dB的性能改进。对原型的评估显示,在切片隔离方面有了显著的改进,通过公平的资源分配,总吞吐量可提高192%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A virtualization architecture for mobile WiMAX networks
Systems virtualization offers convenient means for sharing networking infrastructure while improving its utilization. This study addresses the challenges of virtualizing a commercial off-the-shelf 4G mobileWiMAX basestation. We highlight additions and modifications needed in theWiMAX network architecture for supporting multiple simultaneous virtual basestations on a single physical basestation. The most prominent features provided by the proposed virtual basestation framework include the capability to perform all frame switching at layer-2, and control mechanisms to provide isolation across slices needed to ensure experiment repeatability. By prototyping on a commercial WiMAX radio, this paper shows the usage of the virtual basestation system for housing mobile virtual network operators and testbeds alike. A use case is shown where the virtual basestation design is used to evaluate mobile handoff schemes. Another usage case is shown for optimizing a video delivery on the edge. The video delivery use case is used to show performance improvements of up to 5dB in the PSNR. Evaluation of prototype shows a significant improvement in the slice isolation, with aggregate throughput improvements of up to 192% achievable through fair resource allocation.
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