无线多媒体传感器网络视频流多路径路由算法

无线多媒体传感器网络中的视频流传输,需要提供多样QoS保障.提出一种基于改进蚁群算法多路径路由算法ACMRA(ant colony based multipath routing algorithm),以寻找具有多种优先级路径的路径集,并对重要性不同的视频数据进行相应路径的选择.通过优化网络链路上人工信息素的初始分布,改进后的蚁群算法具有更快的可行路径发现速度及收敛速度.多路径机制的引入提高了网络数据吞吐量与视频传输性能,同时可均衡网络资源,延长网络生命.实验结果表明,算法ACMRA在网络性能、视频传榆性能与网络生命周期方面,较之其他路由算法具有明显优势.

Multi-Path Routing Algorithm for Video Stream in Wireless Multimedia Sensor Networks

A variety of QoS guarantee is to be needed in the real-time transmission of video stream in wireless multimedia sensor networks.A multi-path routing algorithm ACMRA(ant colony based multipath routing algorithm) based on improved ant colony algorithm is proposed in this paper to find the paths set which includes paths according to different priorties.It also takes the importance of video data into consideration when making path choice.The improved ant colony algorithm enjoys faster finding and convergence speed by optimizing the initial distribution of artificial pheromone on network link.By introducing the multi-path mechanism throughput,the network and video transmission performance are both enhanced,while it also balances network resources and prolongs the network life cycle.Compared with the other classic routing algorithm,the experimental results illustrate that ACMRA has obvious advantages in terms of raising network,video transmission performance,and extending the network life cycle.