Fair Bandwidth Allocation Using Effective Multicast Traffic Share in TDM-PONs
Fair Bandwidth Allocation Using Effective Multicast Traffic Share in TDM-PONs
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DOI：
10.1109/jlt.2007.916485
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发表时间：
2008-04
影响因子：
4.7
通讯作者：
Namuk Kim;H. Lim;Minho Kang
中科院分区：
文献类型：
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作者：
Namuk Kim;H. Lim;Minho Kang
本文针对时分复用无源光网络（TDM-PON）的下行方向，从带宽分配效率和链路共享公平性两个方面讨论了光业务共享对组播视频传输性能的影响。我们分析了TDM-PON中与组播分组交换和传输控制相关的实际问题，并提出了一种公平的带宽分配机制，称为基于共享的比例带宽分配（S-PBA），以有效地支持组播服务。为了向光网络单元提供与业务类型无关的公平的链路带宽和高吞吐量，S-PBA通过使用有效的组播业务份额来仲裁单播时隙的量，该有效的组播业务份额基于组播业务负载分布和业务共享密度来确定。分析和仿真结果清楚地验证了所提出的机制的有效性。这项工作适用于多播视频传送或多播业务传输，一般来说，如语音业务，或两者的组合，在视频会议的情况下，例如。
In this paper, the effects of optical traffic-sharing on the performance of multicast video delivery in terms of the efficiency of bandwidth allocation and the fairness of link-sharing are discussed for the downstream direction of a time-division-multiplexed passive optical network (TDM-PON). We analyze the practical issues associated with multicast packet switching and transmission control in a TDM-PON and also propose a fair bandwidth allocation mechanism, called share-based proportional bandwidth allocation (S-PBA), to effectively support multicast services. In order to provide an optical network unit with a fair amount of link bandwidth and high throughput independent of traffic type, S-PBA arbitrates the amount of unicast timeslot by using effective multicast traffic share, which is determined based on multicast traffic load distribution and traffic-sharing density. Analytic and simulation results clearly validate the effectiveness of the proposed mechanism. This work is applicable to multicast video delivery or multicast traffic transmission in general, such as voice traffic, or a combination of both in the case of video conferencing, for example.