在移动网络上开展流媒体业务，最大的问题是无线环境的时变性容易引起丢包时延，导致缓冲过多、图像质量差和播放中断。

The most troublesome problem in deploying streaming media service is the package-lost delay, which results in too much buffer, low-quality image and interrupted play.

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该文根据分组话音业务的特点，结合分组话音业务服务质量要求，特别是分组丢弃概率和端到端分组传送时延的要求，研究AAL2分组话音系统中aal 2分组最优长度的确定方法。

This paper investigates the optimal packet, length for AAL2 packet voice system without bit dropping, which takes into consideration the features and quality of service of AAL2 packet voice.

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