| 输入/输出ATM交换机在突发性业务下的性能 |
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| 引用本文： | 钱炜宏,李乐民.输入/输出ATM交换机在突发性业务下的性能[J].电子科技大学学报(社会科学版),1997(6). |
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| 作者姓名： | 钱炜宏 李乐民 |
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| 作者单位： | 电子科技大学宽带光纤传输与通信系统技术国家重点实验室 |
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| 基金项目： | 国家自然科学基金,电子部预研基金 |
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| 摘 要： | 分析了内部无阻塞输入／输出排队反压型ＡＴＭ交换机在突发性业务下信元丢失、交换机最大吞吐量等性能。输入端口信元的到达过程是ＯＮＯＦＦ突发流，且ＯＮ态以概率ｐ发送信元，ＯＦＦ态的逗留时间可认为０，ＯＮＯＦＦ长度为指数分布的随机变量；属于同一突发流的信元输往同一个输出端口，不同突发流的信元等概率输往不同的输出端口；输入／输出缓冲器长度有限，交换机加速因子Ｓ任意；其中结论对实际设计一种输入／输出排队反压型ＡＴＭ交换机具有一定参考意义。
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| 关 键 词： | 输入／输出排队 开-关突发流 信元丢失率 吞吐量 |
Performance Evaluation of An Input and Output ATM Switch Under Burst Traffic |
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| Qian Weihong,Li Lemin.Performance Evaluation of An Input and Output ATM Switch Under Burst Traffic[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),1997(6). |
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| Authors: | Qian Weihong Li Lemin |
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| Abstract: | In this paper,the cell loss rate and maximum throughput of an internal nonblocking backpressure input and output ATM switch under burst traffic is investigated.The arrival process to each input port is on off (active and silence)cell stream with geometrical distribution.In each time slot within active period,a cell is generated with certain probability p ,and the silence period may be zero slot.Cells belonging to the same burst are directed to the same output port,while bursts are addressed uniformly among the switch output ports.The length of input/output beffers is finite,and switch speed -up factors arbitray.The comprehensive understanding is also given to realize an input/output backpressure packet switch. |
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| Keywords: | input/output queueing on off stream cell loss rate throughput |
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