但是高速多维报文分类本身是一个公认的难以解决的问题，而且报文速率的快速增长给报文分类算法带来了巨大的压力。
However, performing classification quickly on multiple fields is known to be difficult, and the fast increase of packet arrival rate also put great pressure on the packet classification algorithms.
接收者只需向其父节点发送反馈报文，就可以在最短的时间内获得其允许的最佳接收速率。
Moreover, each receiver can obtain its optimal throughput in the least time just only sending feedback message to its parent.
主要是采用RTP协议得到的已丢失报文和历史传输速率等信息，借鉴了无线通信原理中的自适应滤波算法，来预测评估视频传输的网络状态。
Firstly, it is profits from the adaptive filter algorithm in communication theory and achieved by evaluating and monitoring the status of message loss over a RTP - based network.
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