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目前基于输入队列技术的 ATM交换机的研究日益活跃 .输入队列单播调度算法的研究已经取得了较多研究成果 ,并已得到商业应用 .但输入队列组播调度算法的研究目标主要集中于提高吞吐量 ,而忽略了调度算法对组播流 Qo S的影响 ,如延迟等 .文中提出了一种支持组播功能的输入队列 ATM交换机的设计方案 ,并给出相应的输入队列组播调度算法 ,称为组播最长正则队列优先算法 (ML NQF) .调度算法 ML QNF具有改善吞吐量、满足Qo S需求和公平服务等特点 .
At present, research on ATM switches based on input queuing technology is becoming more and more active.The research on input queue unicast scheduling algorithms has achieved a lot of research results and has been commercialized.But the research goal of input queue multicast scheduling algorithm is mainly focused on improving throughput While ignoring the impact of scheduling algorithm on the Qo S multicast flow, such as delay, etc. In this paper, a design of input queue ATM switches that support multicast functions is proposed and the corresponding input queue multicast scheduling algorithm is given, Known as multicast longest regular queue priority algorithm (ML NQF) scheduling algorithm ML QNF has to improve throughput, Qo S to meet the needs and fair service features.