适合视频传输的多接口多信道AOMDV路由研究  

Research on suitable MIMC-AOMDV for video streaming

作　　者：谢朋宇[1] 宋玲[2] 

机构地区：[1]中国南方电网广西电网玉林供电局,广西玉林537000 [2]广西大学计算机与电子信息学院,广西南宁530004

出　　处：《计算机工程与设计》2012年第11期4053-4057,共5页Computer Engineering and Design

基　　金：国家自然科学基金项目(60963022);广西自然科学基金项目(桂科自0991059)

摘　　要：为了提高在Ad Hoc上实时视频传输质量,改进现有的信道切换算法并应用到AOMDV(Ad-hoc on-demandMultipath distance vector)协议,得到一个新的路由协议:MIMC-AOMDV(multi interface multi channel AOMDV)路由协议;针对影响视频传输质量的网络性能指标,进一步采用区分视频服务的时延QoS约束和跨层的链路质量度量改进MIMC-AOMDV路由协议得到新协议:QMMIMC-AOMDV(quality metric MIMC-AOMDV);通过扩展实验平台并用仿真实验验证了所提出的改进思想的可行性和有效性。实验结果表明,所提出的QMMIMC-AOMDV协议能有效降低帧时延,提高帧可解码率和峰值信噪比(peak signal to noise ratio,PSNR),更适合于实时视频流的传输。In order to improve the video quality of real-time in the Ad Hoc networks, firstly, multi-interface multi-channel extension method is applied into the AOMDV routing protocol to get MIMC-AOMDV. Secondly, video streaming delay QoS constraint and link-quality metrics are proposed, which uses the multi interface total queue＇s used length to get QMMIMC-AOMDV routing protocol. Finally, the facility and validity of the idea is proven by expanding experimental platform and using simulation experiment. The results show that proposed QMMIMC-AOMDV can reduce the frame delay effectively and improve frame decodabie rate and PSNR as well, so we can draw a conclusion that the proposed QMMIMC-AOMDV is more suitable for real-time video streams.

关 键 词：多接口多信道 无线自组网 多径距离矢量路由协议 视频传输 服务质量 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]