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Jitter buffer management algorithms for voice communication.

机译:用于语音通信的抖动缓冲区管理算法。

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摘要

This thesis studies some jitter management algorithms for real-time applications. These algorithms are executed at a destination node, and assume no knowledge of the source characteristic or the impact of the network path characteristic. The work mainly focuses on prediction algorithms that make use of the information of the packets received in the past, and adjust buffer parameters in order to maintain certain level of quality of service (QoS). Two algorithms are proposed, first, to apply the least mean square method to predict the future packet interarrival time so that the buffer parameters can be dynamically changed in order to adapt to the bursty network traffic; second, to apply the fuzzy logic method on the buffer management to maintain the gap probability within acceptable level while keep the latency as low as possible. These two new algorithms have been evaluated using OPNET simulation and compared with some other algorithms such as the I-policy and the E-policy. We studied and discussed the tradeoff among the gap probability, average display latency, and packet loss probability. Towards the end, we have also made some design recommendations.
机译:本文研究了一些用于实时应用的抖动管理算法。这些算法在目标节点上执行,并且不假设源特性或网络路径特性的影响。这项工作主要集中在预测算法上,该算法利用过去收到的数据包的信息,并调整缓冲区参数以维持一定水平的服务质量(QoS)。提出了两种算法,首先,应用最小均方方法预测未来的数据包到达时间,以便可以动态更改缓冲区参数,以适应突发性网络流量。第二,将模糊逻辑方法应用于缓冲区管理,以将间隙概率保持在可接受的水平,同时将等待时间保持在尽可能低的水平。这两种新算法已使用OPNET仿真进行了评估,并与其他一些算法(例如I策略和E策略)进行了比较。我们研究和讨论了间隙概率,平均显示延迟和丢包概率之间的折衷。最后,我们还提出了一些设计建议。

著录项

  • 作者

    Zhang, Peng Frank.;

  • 作者单位

    University of Ottawa (Canada).;

  • 授予单位 University of Ottawa (Canada).;
  • 学科 Computer Science.
  • 学位 M.C.S.
  • 年度 2002
  • 页码 97 p.
  • 总页数 97
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 自动化技术、计算机技术;
  • 关键词

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