抗语音分组丢失的自适应传输调整算法的实现  

Realization of algorithm for resistance to voice packet loss of adaptive transmission adjust

作　　者：王亚光[1] 刘一伟[2] 张文杰[1] 李云龙[1] 

机构地区：[1]南开大学信息技术科学学院计算机科学与信息安全系,天津300071 [2]北京大学数学科学学院数学系,北京100871

出　　处：《计算机工程与设计》2013年第1期105-109,共5页Computer Engineering and Design

基　　金：国家科技支撑计划课题基金项目(2012BAF12B00);天津市重点基金项目(11JCZDJC28100)

摘　　要：为提高语音的传输质量,减少语音分组因网络状况恶化造成的丢失现象,在研究实时语音传输技术的基础上,提出了一种抗语音分组丢失的自适应传输调整算法。通过量化接收端反馈回发送端的语音分组丢失率等信息来判断网络状态,并通过改进AIMD(和式增加乘积减少)拥塞控制算法来自适应地随网络状态调整语音的传输速率,以此来达到抗语音分组丢失的效果。通过自行搭建拓扑结构的网络环境,对算法进行了测试分析,验证了该算法的有效性。To improve the quality of voice transmission and reduce voice packet loss phenomenon due to deterioration of the net- work conditions, an adaptive transmission adjustment algorithm of anti-voice packet loss based on real-time voice transmission technology is presented. It is pointed out that, network state is judged through quantifying the voice packet loss rate and other information which receiver send back, then through improving AIMD congestion control algorithm adaptively with network states, voice transmission rate is adjusted. The expected results is achieved. Finally, by building its own network environment of topology, the feasibility of the algorithm is tested and verified.

关 键 词：语音分组 语音通信 实时语音传输 抗分组丢失 拥塞控制 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]