一种服务质量自适应调整算法的研究

Research on an adaptive control algorithm with quality of service

提出一种端到端视频流传输服务质量自适应调整算法,此算法通过多级显式拥塞通知(ECN)机制,监测网络带宽变化、路径上节点缓冲容量变化及客户端接收速率变化等多个目标信息,自适应地动态调整视频流传输速率以及编码码率,以提高服务质量。通过仿真实验,证明了这一算法的有效性。

A control algorithm of streaming video delivery with adaptive end-to-end Quality of Service （QoS） based on multiple object strategy was introduced. It adaptively adjusted video transmission rate and eode rate aeeording to simple multilevel Explieit Congestion Notifieation（ECN）-based meehanism to obtain a feedbaek from the network as well as end-user＇s speeifie network bandwidth and device eonstraints. Simulation results demonstrate that the new algorithm has a good adaptation eapaeity against available bandwidth fluetuation.