基于预测的无线Mesh网络多链路切换机制研究-《计算机技术与发展》

文章信息/Info

Title:: Research on Prediction-based Multilink Handoff Mechanism in Wireless Mesh Network

摘要:: 在无线Mesh网络地铁无线通信的应用中，为了保证移动终端-车载MP在无线Mesh接入点-轨旁MP之间快速移动时，仍能保证高速平稳的数据传输，提出了一种基于链路预测和链路切换算法的多链路移动切换机制。其中，链路预测是基于EMD(经验模式分解)和SVM(支持向量机)来预测RSSI的模型，链路切换是基于预测结果和移动链路切换协议来进行多链路切换。实验结果表明，这种切换机制不仅能快速、平滑地进行链路切换，并能有效地减少切换次数，节约网络资源

Abstract:: In order to guarantee the mobile terminal ( train MP) can keep a high speed transmission when it moves fast among Mesh ac-cess points ( rail MPs) in wireless Mesh network in the subway communication application,a novel intelligent multilink handoff mecha-nism which combines the link prediction algorithm and the multilink handoff algorithm is proposed. The link prediction algorithm is used to predict link state represented by Received Signal Strength Indication ( RSSI) next time with Empirical Mode Decomposition ( EMD) and Support Vector Machine ( SVM) ,the multilink handoff algorithm is used to switch link with the results obtained from the link predic-tion algorithm. The experiment shows that the mechanism not only switches link fast and smoothly,but also effectively reduces the switc-hing frequency and saves network resources