ATM Switch Suitable for Non-uniform multiple traffic with Multicast Media

9.1.基于单播信元/多播信元的ATM多播交换机的性能本文提出了一种新的ATM多播交换机的结构，它使单播信元和多播信元在点到点路由网络之前分别输入到相应的多播路由器中。通过减少复制网络的过度负载，这种新的组播交换机可以使平均系统时间小于复制网络和路由的串联组合模型。此外，我们还展示了我们提出的模型中的信元丢失概率的模拟。双加速因子输入输出并行ATM交换机提出了一种降低信元丢失率的双加速因子输入输出并行ATM交换机模型。在该模型中，基本上采用大的加速因子，但当前一个时隙的输出队列超过阈值时，采用小的加速因子。我们分析了均匀业务下的平均等待时间和信元丢失概率。结果表明，该模型在不增加平均等待时间的前提下，有效地降低了信元丢失概率.热点业务变化时输入输出交换ATM交换机的性能分析分析了热点业务变化时输入输出交换ATM交换机的交换性能。在变化的热点流量中，热点的数量、位置以及流量的偏离都是变化的。与传统的热点流量模型相比，该流量模型更接近实际流量模型。我们分析了信元丢失概率和平均系统延迟，这种开关和交通模型，并显示在各种交通条件下的信元丢失性能的数值结果。分析了热点业务对信元丢失性能的影响。

9.1. Performance of ATM multicast switch with separate mutes depending on unicast cell/multicast cellThis paper proposes a new architecture for the ATM multicast switch, which makes unicast cells and multicast cells inputted to the corresponding separate mutes before the point to point routing network. By reducing excess load of the copy network, this new multicast switch can make mean system time smaller than one of a model which is a serial combination of a copy network and a routing. In addition, we also show the simulation of the cell loss probability in our proposed model.92. Input and output queueing ATM switch with two speedup factorsInput and output queueing ATM switch model with two speedup factors to decrease cell loss probability is proposed. In the proposed model, large speedup factor is basically used, however, small speedup factor is adopted when in the previous time slot the output queue exceeds the threshold. We analyze the mean waiting time and the cell loss probability under uniform traffic. As a results, we show that the proposed model is useful to decrease the cell loss probability without increase the cell loss probability without increasing the mean waiting time excessively.9.3. Performance analysis of input and output queueing ATM switch under changeable hot-spot trafficSwitch performances of input and output queueing ATM switch under the changeable hot-spot traffic is analyzed. In the changeable hot-spot traffic, the number of hot-spot, its location and the deviation of traffic is changeable. This traffic is close to the realistic traffic model compared with the conventional hot-spot traffic. We analyze the cell loss probability and mean system delay for this switch and traffic models and show numerical results for the cell loss performance under various traffic conditions. And the influence of the hot-spot traffic on the cell loss performance are shown.