DQDB在支持多个利益社区方面的系统不公平性

IEEE Global Telecommunications Conference GLOBECOM '91: Countdown to the New Millennium. Conference Record Pub Date : 1991-12-02 DOI:10.1109/GLOCOM.1991.188548

W. Williams, L. O. Barbosa, N. Georganas

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引用次数: 4

摘要

IEEE 802.6城域网标准采用了分布式队列双总线(DQDB)体系结构。结果表明，目前形式的标准在支持多个感兴趣的社区的同时，在台站之间划分可用带宽方面仍然不足。实际上，为了克服DQDB的不公平性而引入的带宽平衡机制(bandwidth balancing mechanism, BWB)实际上可能会降低协议的公平性。介绍了一种改进的BWB机制，称为可变带宽平衡(V-BWB)，它克服了DQDB在高利用率期间的不足。

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System unfairness of DQDB in supporting multiple communities of interest

The DQDB (distributed queue dual bus) architecture has been adopted as the IEEE 802.6 Metropolitan Area Network standard. It is shown that the standard in its present form is still inadequate in dividing its available bandwidth between stations while supporting multiple communities of interest. In fact, the bandwidth balancing mechanism (BWB) introduced to overcome the unfairness of DQDB may actually worsen the fairness of the protocol. A modified version of the BWB mechanism called variable bandwidth balancing (V-BWB) which overcomes the inadequacies of DQDB during periods of heavy utilization is introduced.<>

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IEEE Global Telecommunications Conference GLOBECOM '91: Countdown to the New Millennium. Conference Record

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