优先队列在实时混合数据传输中的应用

使用同一数据通道对实时流和非实时流数据进行并发传输时,通过定义数据传输优先级可以提高实时流数据的传输性能。当非实时流数据短时间内变化较大时,固定码流的实时流受当前优先级较高的非实时数据传输流量和丢包率影响会较大。为了解决这一问题,在分析了数据传输过程中优先级队列传输信息瞬时变化、网络丢包率、带宽预估等因素的基础上提出了一种混合数据传输方法。实验结果表明方法具有自适应性,且在提高带宽利用率的同时还可以提高实时流的传输效果。

Application of priority queue in real-time mixed data transmission

By defining data transmission priority the real-time flow transmission performance can be improved when both the real-time and the non-real-time flow data use the same data channel to transmit concurrently.When the non-real-time control information varies greatly in a short time,due to the high priority non-real-time data or packet loss probability increase,the realtime flow data with fixed stream is also affected greatly.A new method of mixed data transmission is proposed through the study on bandwidth estimation,packet loss probability,and the occasion transmission data increase greatly in different priority queues in a short time.The experimental results show that the proposed method is adaptive,and presents good performance for both bandwidth utilization and real-time flow transmission effect.