摘要
对无线光通信网络的研究现在大都集中在拓扑控制方面,对路由技术的研究较少.马里兰大学的Abhishek Kashyap等提出了针对无线光通信网络中拓扑控制与路由的Rollout算法,算法适合网络节点固定或移动频率不高的网络环境.该文引入了全球定位系统(GPS)来获取无线激光通信网络中移动节点的地理位置,设计了一种节点的邻接矩阵来动态更新网络中节点的拓扑,考虑到移动无线光通信网络中节点的快速移动、链路带宽、最短路经以及节点收发器数目的限制,提出了一种服务质量(QoS)路由算法.仿真结果表明,该算法的性能较好,能更好地适应节点快速移动的无线激光通信网络.
The existing researches for wireless optical networks mostly focus on topology control, little research on routing has been done. Abhishek Kashyap and his colleagues in Maryland University presented the Rollout algorithm for integrated topology control and routing in wireless optical networks. However, in those algorithms, nodes in wireless optical networks are either stationary or have limited mobility. In this paper, we apply Global Position System （GPS） in mobile wireless optical networks to acquire the geographical position of nodes, and design an adjacent matrix of nodes to update the network topology dynamically. Considering the fast movement of nodes, the bandwidth of link, the shortest path and constraint of the number of transceivers in mobile wireless optical networks, we present a quality-of-service （QoS） routing algorithm for mobile wireless optical networks with free-space optical links. The results of simulations show that the algorithm has better performance and is more adaptive to the request for fast movement of nodes in mobile wireless optical networks.
出处
《应用科技》
CAS
2008年第5期18-22,共5页
Applied Science and Technology
