在线GATE驱动调度下WDM EPON的上行业务容量
Upstream traffic capacity of a WDM EPON under online GATE-driven scheduling
摘要：
无源光网络越来越多地用于接入互联网，了解未来长距离多通道变体的性能非常重要。在本文中，我们讨论了动态带宽分配（DBA）算法用于管理上行资源的WDM EPON的要求，并提出了一个简单的新的DBA算法，是相当有效的比经典的方法。我们证明了该算法模拟了多服务器轮询系统，并推导出适用于一般流量过程的容量公式。我们评估延迟性能的仿真表明所提出的调度的优越性。建议的调度器提供了相当大的灵活性，是特别有效的长距离接入网络中的传播时间很高。
英文摘要：
Passive optical networks are increasingly used for access to the Internet and it is important to understand the performance of future long-reach, multi-channel variants. In this paper we discuss requirements on the dynamic bandwidth allocation (DBA) algorithm used to manage the upstream resource in a WDM EPON and propose a simple novel DBA algorithm that is considerably more efficient than classical approaches. We demonstrate that the algorithm emulates a multi-server polling system and derive capacity formulas that are valid for general traffic processes. We evaluate delay performance by simulation demonstrating the superiority of the proposed scheduler. The proposed scheduler offers considerable flexibility and is particularly efficient in long-reach access networks where propagation times are high.
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