用于视频传输的Ad Hoc网络路由协议优化方法

发布时间：2018-03-13 13:46

本文选题：无线自组织　切入点：视频传输　出处：《光通信研究》2014年06期 　论文类型：期刊论文

【摘要】：在Ad Hoc(无线自组织)网络中进行视频传输时,视频流的丢包率是影响视频传输质量的关键参数。传统的AODV(按需距离矢量)路由协议仅依据RREP(路由应答)消息中的跳数等信息来进行路由更新,容易导致网络负载不均衡,增大了视频帧的丢包率,造成视频画面不清晰。文章提出的V-AODV(用于视频传输的按需距离矢量)协议依据V-RREP(用于视频传输的路由应答)包中负载状态信息和跳数信息来进行路由选择,避开了负载较重的节点,使得整个视频网络负载均衡。通过NS2(网络模拟器)分别对V-AODV和AODV协议下的视频流传输进行了仿真对比,结果表明,V-AODV协议降低了视频帧的丢失率,有效地解决了视频传输中的负载均衡问题。
[Abstract]:When video is transmitted in an ad hoc (wireless ad hoc) network, The packet loss rate of video stream is the key parameter affecting the quality of video transmission. The traditional AODV routing protocol only updates the network load according to the number of hops in the RREP (routing response) message. Increases the packet loss rate of video frames, The proposed V-AODV (on-demand distance vector for video transmission) protocol is based on the load state information and hops information in the V-RREP packet for video transmission. By avoiding the heavy load nodes and balancing the load of the whole video network, the video stream transmission under V-AODV and AODV protocol is simulated and compared by NS2. The results show that the V-AODV protocol reduces the loss rate of video frames, and the simulation results show that the VAODV protocol can reduce the loss rate of video frames, and the simulation results show that the VAODV protocol can reduce the loss rate of video frames. The problem of load balancing in video transmission is solved effectively.
【作者单位】：西安邮电大学;
【基金】：陕西省工业攻关项目(2012NKC01-15) 陕西省教育厅2012年服务地方专项(产业化培育)项目(2012JC22)
【分类号】：TN929.5

【参考文献】