| PowON-PowOFF模型对区分服务QoS性能影响的研究 |
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| 引用本文： | 黄丽亚,王锁萍.PowON-PowOFF模型对区分服务QoS性能影响的研究[J].南京邮电学院学报(自然科学版),2008(4):57-61. |
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| 作者姓名： | 黄丽亚 王锁萍 |
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| 作者单位： | 南京邮电大学光电工程学院,南京江苏210003 |
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| 基金项目： | 江苏省高校青蓝工程基金（TJ207018）和南京邮电大学青蓝工程基金（NY206035）资助项目 |
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| 摘 要： | 为了更深入地了解区分服务对网络QoS性能的影响，采用了能够真实反映网络流量特性的自相似业务模型进行分析，选取的模型是重尾ON-OFF叠加模型PowON-PowOFF；研究了自相似业务流在WFQ方案中对QoS参数的影响，并分析了该模型各参数对QoS性能的影响，为下一代网络采取相应机制克服突发业务的不利影响提供了依据。
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| 关 键 词： | 区分服务 自相似业务 WFQ 排队时延 |
The Study on Effect of the PowON-PowOFF Model on Diffserv QoS Performance |
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| HUANG Li-ya,WANG Suo-ping.The Study on Effect of the PowON-PowOFF Model on Diffserv QoS Performance[J].Journal of Nanjing University of Posts and Telecommunications(Natural Science),2008(4):57-61. |
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| Authors: | HUANG Li-ya WANG Suo-ping |
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| Affiliation: | ( College of Optical and Electric Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China) |
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| Abstract: | Differentiated Service （DiffServ） provides a scalable solution to support the quality of service （QoS） in ever expanding Internet. To further investigate the effect of DiftServ on network QoS , this paper employs a self-similar PowON-PowOFF model, which is the superposition of some independent heavy-tailed ON-OFF processes and can describe the characteristics of the actual network throughput comprehensively. The paper studies the variation of QoS parameters using the WFQ scheme with the self-similar traffics. It also analyzes the relation between the QoS performance and the PowON-PowOFF model parameters. The results can be applied to the next generation network to overcome the adverse impacts of the burst traffic. |
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| Keywords: | Differentiated service Self-similar traffic Weighted fair queuing Queuing delay |
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