改进的实时流媒体中流量自适应控制机制  

Improved adaptive flow control mechanism for real-time flows

作　　者：易军凯[1] 李志彤[1] 

机构地区：[1]北京化工大学信息科学与技术学院,北京100029

出　　处：《计算机工程与应用》2013年第3期101-103,共3页Computer Engineering and Applications

基　　金：国家863重点计划(No.2009AA01Z433)

摘　　要：为了提高实时多媒体通信的服务质量,在综合考虑网络延迟和网络抖动对实时流媒体的影响下,定义了基于RTT的综合标志量。在此基础上,提出了一种改进的实时流量自适应控制机制。仿真结果表明,与基于丢包率和仅考虑延迟的RTT算法相比,该机制有效提高了数据流的平稳性和带宽的利用率,有更高的自适应性。In order to improve the QoS of real-time multimedia communication, this paper introduces RTT-based synthesis prediction by considering the influence of network delay and jitter for real-time flows comprehensively. On the basis of these, an improved adaptive flow control mechanism for real-time flows is proposed. Compared with the solution which is based on packet loss rate and RTT-based solution which only considers network delay, simulation results show that the propsed mechanism has higher adaptability by enhancing the stabilization of data flow and network bandwidth utilization efficiently.

关 键 词：实时多媒体通信 自适应控制 往返时间 延迟抖动率 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]