无线视频传输QoS优化研究——以Android手机为例  

Optimization Research of Wireless Video Transmission QoS Based on Android Mobile Phone

作　　者：冯灵霞[1] 张亚娟[1] FENG Ling-xia;ZHANG Ya-juan(School of Information Engineering,Huanghe Science and Technology University,Zhengzhou 450063,China)

机构地区：[1]黄河科技学院信息工程学院,河南郑州450063

出　　处：《软件导刊》2018年第4期148-150,154,共4页Software Guide

基　　金：郑州市科技局普通科技攻关项目(20140664);河南省基础与前沿技术研究计划项目(162300410193)

摘　　要：随着智能手机信息处理能力的增强和移动互联网传输速率的大幅提升,使用手机通过移动网络进行视频传输越来越普及。Android操作系统雄踞智能手机终端操作系统榜首。由于无线信道环境恶劣,利用无线网络传输高质量视频极富挑战。选择使用H.264作为视频压缩标准,基于现有AMID算法,提出一种将丢包率和接收缓冲区使用情况相结合的改进AMID拥塞控制算法。实验表明:在网络状况良好情况下,虽没有明显改善接收端丢包率,但发送端发送数据包个数明显增加;在网络状况较差时,对改善丢包率作用明显,说明该系统对保障视频传输QoS有一定作用。With the enhancement of the information processing ability of smart phones and the promotion of the mobile Internet transmission rate,it has become more and more popular to use mobile phones to transmit video via mobile network.In the smartphone platform,Android operating system in the intelligent terminal operating system list on the top.Because the wireless channel environment is abominable,to achieve high quality video transmission over wireless networks is a challenging task.Therefore,the system chooses to use H.264 as the video compression standard by comparison.At the same time,on the basis of H.264,an improved AMID congestion control algorithm combining the packet loss rate and the received buffer usage is proposed based on the existing AMID algorithm.The experiment shows that,When the network is in good condition,although the packet loss rate of the receiver is not obviously improved,the number of packets sent at the transmitter has increased significantly.When the network is poor,it has obvious effect on improving the packet loss rate.So the system has some significance to ensure video transmission QoS.

关 键 词：视频传输 RTCP 拥塞控制 AMID算法 Android 

分 类 号：TP319[自动化与计算机技术—计算机软件与理论]