CAJ | 학술논문

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。
재무선Mesh망락지철무선통신적응용중，위료보증이동종단-차재MP재무선Mesh접입점-궤방MP지간쾌속이동시，잉능보증고속평은적수거전수，제출료일충기우련로예측화련로절환산법적다련로이동절환궤제。기중，련로예측시기우EMD(경험모식분해)화SVM(지지향량궤)래예측RSSI적모형，련로절환시기우예측결과화이동련로절환협의래진행다련로절환。실험결과표명，저충절환궤제불부능쾌속、평활지진행련로절환，병능유효지감소절환차수，절약망락자원。
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.