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中文摘要：
为改善H.264编码的视频流在802.11e中的传输性能,提出了一种结合H.264/AVC中不同类型的数据分割对视频重建质量的重要性因子和队列状态的视频包映射方法。首先定量分析H.264/AVC中A、B、C三种分割的丢失对视频重建质量的影响,得到其重要因子;然后依据重要因子和队列长度将视频数据包映射到802.11e的不同EDCA队列中。算法改进了EDCA机制中数据包的静态映射机制,根据视频分割数据的不等重要性,提供差异性服务。仿真结果表明,与目前的视频包静态映射机制相比,该算法提高了视频重建质量,最好可提高1 dB以上。
英文摘要：
To improve the performance of H.264 video streaming transmission over IEEE 802.11e wireless local area networks,this paper proposed a prioritization mechanism that jointly considering about different data partition＇s significance factors and the queue＇s status.Firstly,quantitative analysed the three different data partitions： A,B and C in H.264/AVC,which had unequal significance to the reconstructed video quality.Then according to the significance factor and queue length,the video packets were dynamically scheduled into different EDCA queue for transmission.Simulation results show that the proposed scheme improves the reconstructed video quality by 1 dB compared with the existed static mapping scheme.
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