VoIP系统中消除时延抖动的研究与实现

Research on and Implementation of Jitter Elimination in the VoIP System

时延抖动是影响VoIP服务质量(QoS)的一个重要指标。简要介绍了时延抖动的概念,分析了消除网络时延抖动的方法,并提出了一种新的自适应抖动缓冲控制算法。该算法通过动态调整抖动缓冲的大小来消除时延抖动。实验结果表明该算法对语音通信质量有较大提高。

Jitter is an important specification of the QoS of VolP. The concept of jitter is briefly introduced, and the methods for eliminating the jitter are analyzed. A novel adaptive jitter buffering control algorithm is proposed to reduce jitter by adjusting the size of jitter buffer dynamically. The experimental result shows that this algorithm can improve the quality of voice obviously.