计算机科学 ›› 2015, Vol. 42 ›› Issue (6): 131-134.doi: 10.11896/j.issn.1002-137X.2015.06.029
姜颖,李艳萍,郭淑霞,李卫平
JIANG Ying, LI Yan-ping, GUO Shu-xia and LI Wei-ping
摘要： 为了提高视频流数据的传输质量,减小视频流数据的失真率,从而提高网络中视频流数据的利用效率,提出了一种多用户视频流分布式最小失真调度方案。该方案采用相加模型来捕捉总的视频失真,建立起视频流失真模型,并通过M/G/1排队模型来进一步建模,得到视频流失真与视频流传输的延迟分布相关性函数,通过优化网络拥塞来进行系统的延迟约束,从而减小视频流失真率；通过同时考虑路由和速率分配问题来得到路由拥塞的最小化最优解,最大限度地减少网络的传输延迟。实验数据结果及对比分析表明,该方案在减小视频流失真比率、缩短视频流传输的延迟时间和控制网络丢包率上均取得了较好的效果。
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