采用热点推出控制机制的共享存储器型ATM交换机仿真评价  

Performance Simulation of Shared Buffer ATM Switches Using Hot-Spot Push Out Mechanism

作　　者：张兴周[1] 孙震[1] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001

出　　处：《哈尔滨工程大学学报》2002年第1期103-107,112,共6页Journal of Harbin Engineering University

摘　　要：共享缓存器型ATM交换机的性能在非均匀业务下会变差 .只有应用有效的优先级控制策略才能改善这种情况 .本文采用热点推出优先级控制机制建立了非均匀业务下共享存储器ATM交换机系统模型 .应用计算机仿真系统对系统模型进行了仿真研究 ,讨论并评价了业务负载、业务的不均匀性等对系统主要性能参数———信元丢失率、平均信元延迟、吞吐率等的影响 .通过与数值分析比较验证了仿真评价结果的可信性 .The Hot-Spot Push Out Priority control mechanism, which purges hot-spot cells that unfairly occupy the buffer and improve the system performance, is used to construct the performance model of shared ATM switches under non-uniform traffic. This model is simulated by a computer simulation system and the influence of 'traffic load' and non-uniformity of traffic on the main performance parameters, such as 'cell loss ratio'. ' mean cell delay' and 'throughput', is discussed and analyzed. The comparison of simulation results with the results of numerical calculation proves the reliability of the simulation.

关 键 词：热点推出 控制机制 共享存储器型 ATM交换机 仿真评价 

分 类 号：TN916.4[电子电信—通信与信息系统]