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为了支持无线Mesh网络(Wireless Mesh Network,WMN)中多媒体实时应用,必须提供更好的服务质量(Quality of Service,Qo S).为此,提出一种基于差异度蚁群的WM N多约束Qo S路由算法(Improved ACO Routing Algorithm Based on M ulti-Constrained Qo S for Wireless M esh Netw ork,IARQM),该算法利用归一化后的路径Qo S信息和路径差异度调节信息素增量,并用其替代目标函数,在发挥最优路径激励作用的同时提高了算法效率.IARQM根据节点类型对下一跳节点选择进行调整,能充分适应WMN特点,并在链路失效后利用邻居管理提供恢复容错机制,具有很强的健壮性.实验结果表明,与ARMAN、QSS路由算法和AODV路由协议相比,IARQM能更好地支持WM N多约束Qo S路由,并有效提升网络性能.
In order to support real-time multimedia applications in Wireless Mesh Network (WMN), Quality of Service (QoS) must be improved.Therefore, a WM N-based multi-constraint Qo Improved Routing Algorithm Based on M ulti-Constrained Qo S for Wireless M esh Netw ork (IARQM). The algorithm adjusts the pheromone increment using the normalized path Qo S information and the path difference, and uses it Instead of the objective function, it can improve the efficiency of the algorithm while exerting the optimal path stimulus.IARQM adjusts the next-hop node selection according to the node type, fully adapts to the WMN features, and utilizes the neighbor management to provide the recovery fault tolerance mechanism after the link failure , Which has strong robustness.The experimental results show that IARQM can better support WM N multi-constrained QoS routing and improve network performance compared with ARMAN, QSS routing algorithm and AODV routing protocol.