| 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]. 通信学报, 1998, 19(8): 13-19 |
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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,成都,610054 |
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| 基金项目： | 国家自然科学基金,电科院预研基金 |
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| 摘 要： | 本文详尽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ＯＮ－ＯＦＦ突发流，且ＯＮ态以概率ｐ发送信元，ＯＮ－ＯＦＦ长度为Ｐａｒｅｔｏ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。本文同时比较了突发长度为周期／几何分布下的交换机性能，其结论对实际设计一输入／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： | 交换机 周期／几何／Pareto分布 信元丢失率 吞吐量 |
Performance Evaluation of an Input and Output ATM Switch Under Bursty Traffic |
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| Qian Weihong,Li Lemin. Performance Evaluation of an Input and Output ATM Switch Under Bursty Traffic[J]. Journal on Communications, 1998, 19(8): 13-19 |
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| Authors: | Qian Weihong Li Lemin |
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| Abstract: | In this paper we investigate the cell lossrate and maximum throughput of an internal nonblocking backpressure input and output ATMswitch under bursty traffic. The arrival process to each input port is ON-OFF (Active andSilence) cell stream with Pareto distribution. In each time slot within active period, acell is generated with certain probability p. Cells belonging to the same burst aredirected to the same output port, while bursts are addressed uniformly among the switchoutput ports. The length of input/output buffers is finite, switch speed-upfactor S can be arbitrary. We give comprehensive understanding to realize an input/outputbackpressure packet switch. |
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| Keywords: | Swith Periodical/Geometrical/Pareto distribution Cell loss rate Throughput |
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