基于权重感知的无线Mesh网络信道分配算法  

An Algorithm of Channel Assignment in Wireless Mesh Network Based on Weight-aware

作　　者：程虹[1] 宁彬[1] 王毅[1] 

机构地区：[1]湖北文理学院数学与计算机科学学院,湖北襄阳441053

出　　处：《控制工程》2016年第5期726-733,共8页Control Engineering of China

基　　金：襄阳市科技攻关基金项目(No.2012017襄科业[2012]43号文件);湖北省科技支撑计划项目(No.2015BHE029)

摘　　要：针对无线Mesh网络(wireless mesh networks,WMN)中信道分配问题,提出了一种基于权重感知的启发式信道分配算法。该算法能使用WMN中所有可用信道(非重叠和部分重叠信道)进行信道分配,根据路径转发权重来设定信道分配顺序,从而提高网络的吞吐量。同时,综合考虑信道间隔和节点之间的距离来衡量干扰影响,使节点可以选择具有较少干扰的信道。另外,信道分配中还考虑了接收者的移动性,采用关键事件驱动方式来减少信道重新分配的次数。仿真实验结果表明,相比m-MCM和M4算法,该算法在总干扰成本、吞吐量、延迟和虚拟发送时间上都具有明显优势。For the issue of channel assignment in wireless mesh network（WMN）, an algorithm of wireless mesh networks channel assignment based on weight-aware is proposed. All available channels in WMN（non-overlapping and partial overlapping channels） are used for channel assignment, and channel assignment sequence is set according to the path forwarding weight so as to improve the network throughput. At the same time, the channel separation and the distance of nodes are considered to measure the interference effect so that the node can select channels with less interference. Moreover, the receiver＇s mobility is also considered for channel assignment, and the key event driven mode is used to reduce the number of channel reassignment. The simulation results show that compared with m-MCM and M4 method, this algorithm has obvious advantages on the total interference cost, throughput, delay and virtual send time.

关 键 词：无线MESH网络 信道分配 权重感知 信道干扰 路径转发权重 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]