无线环境下基于丢包区分算法的流媒体拥塞控制

Streaming Media Congestion Control Based on Loss Differentiation Algorithm in Wireless Environment

无线环境中存在的链路质量以及切换等的问题严重影响了拥塞控制机制的性能,该文针对此问题,考虑到实际无线链路的差错控制对上层的影响,提出了一种新的基于(M,K)统计测量方式的端到端丢包区分算法,并基于此设计了适合于无线环境的流媒体拥塞控制机制(WTFRC)。通过NS模拟验证,相对于其他端到端丢包区分算法,该文提出的算法的准确度更高,WTFRC可以在实际的无线环境中保持良好的性能。

As the vile link quality and handover in wireless environment strictly recedes the performance of congestion control scheme, a new end-to-end loss differentiation algorithm (LDA) based on (M, K) measuring model is proposed with the influence of error control of wireless link on transport layer being considered. Then a new multimedia congestion control for wireless environment(WTFRC) is designed based on the proposed algorithm. By validation with NS simulation, the precision of the proposed LDA is proved to be higher than other LDA and WTFRC can maintain good performance.