CAJ | 학술논문

在多射频多信道无线Mesh网中提出了一种支持流量感知的信道分配算法.首先,介绍了基于信号与干扰噪声比和成功传输条件的物理干扰模型,该模型比其他模型更适用于无线传输环境.然后,使用纯整数线性规划方法来解决信道分配问题,提高无线Mesh网网络容量.在考虑网络连通性要求,射频数量限制和无线通信中成功传输条件等网络参数的基础上,设计了TASC信道分配算法.TASC算法在保证网络连通的同时降低了网络干扰,提高了信道分配效率.最后,仿真实验结果表明了该算法在容量优化方面的可行性和高效性.与同类算法比较,该算法能有效提高无线Mesh网网络容量.
재다사빈다신도무선Mesh망중제출료일충지지류량감지적신도분배산법.수선,개소료기우신호여간우조성비화성공전수조건적물리간우모형,해모형비기타모형경괄용우무선전수배경.연후,사용순정수선성규화방법래해결신도분배문제,제고무선Mesh망망락용량.재고필망락련통성요구,사빈수량한제화무선통신중성공전수조건등망락삼수적기출상,설계료TASC신도분배산법.TASC산법재보증망락련통적동시강저료망락간우,제고료신도분배효솔.최후,방진실험결과표명료해산법재용량우화방면적가행성화고효성.여동류산법비교,해산법능유효제고무선Mesh망망락용량.
A channel assignment algorithm with awareness of link traffic is proposed in multi-radio multi-channel wireless mesh networks.First,the physical interference model based on the signal-to-interference-plus-noise ratio and successful transmission condition is described.The model is more suitable for a wireless communication environment than other existing models.Secondly,a pure integer quadratic programming (PIQP) model is used to solve the channel assignment problem and improve the capacity of wireless mesh networks.Consequently,a trafficaware static channel assignment algorithm(TASC) is designed.The algorithm adopts some network parameters,including the network connectivity,the limitation of the number of radios and the successful transmission conditions in wireless communications.The TASC algorithm can diminish network interference and increase the efficiency of channel assignment while keeping the connectivity of the network. Finally, the feasibility and effectivity of the channel assignment solution are illustrated by the simulation results. Compared with similar algorithms,the proposed algorithm can increase the capacity of WMNs.