标题: | 无线网状网路中路由协定的效能量测 Performance Evaluatoin of the Routing Protocols in Wireless Mesh Networks |
作者: | 陶奎志 王协源 资讯科学与工程研究所 |
关键字: | 无线网路;路由协定;网状网路;wireless network;routing protocol;mesh network |
公开日期: | 2004 |
摘要: | 无线网状网路(Wireless Mesh Network) 结合了ad hoc网路和 infrastructure网路的两者优势,它是由多个网状存取点(Mesh Access Point)和网状客户端(Mesh Client)组成。 在无线网状网路里Mesh Access Point可以使用ad hoc的介面来与其他Mesh Access Point沟通,而Mesh Client会透过infrastructure模式来与Access Point做连结。为了帮助转送从Mesh Client来的封包,Mesh Access Point使用ad hoc路由协定来建立路由路径。在Access Point中,主要是由“Wireless Mesh Routing”(WMR)来决定路由,如果在网状网路里的WMR 采用一个没有效率的路由协定,那无线网状网路的可能将会获得很差的效能且失去了扩充性,由此可见WMR 对无线网状网路而言是非常重要的。 在这篇论文里, 我们使用NCTUns 网路模拟器来模拟这些经常使用在无线网状网路里的路由协定,例如OSPF,AODV和STP。 在比较这些路由协定的模拟结果之后,我们发现OSPF最适合用在无线网状网路的路由协定,但是它仍然有一些问题存在,因此我们提出一个架构叫做Multi-Gateway且引入RoofNet的ETX来帮助OSPF的路由协定,进而改进无线网状网路的效能。 The wireless mesh network combines both the advantages of ad hoc networks and infrastructure networks. It is composed of multiple mesh access points and mesh clients. A mesh access point in the wireless mesh network uses an ad hoc mode wireless interface to communicate with other mesh access points, and mesh clients connect to its neighboring mesh access points by using the infrastructure mode wireless interface. In order to forward data packets from mesh clients, mesh access points use the wireless mesh routing protocol to construct the routing path. “Wireless Mesh Routing” (WMR) is the main component in an access point that decides how to route packets. The performance and the scalability of a wireless mesh network may be poor if WMR in the mesh network adopts an inefficient ad hoc routing protocol. Therefore, WMR is very important to wireless mesh networks. In this paper, we used the NCTUns network simulator to evaluate several commonly used routing protocols in wireless mesh networks, such as OSPF, AODV and STP. After comparing the simulation results of these routing protocols, we find OSPF is the most suitable protocol for wireless mesh networks. However, it still has some problems. Therefore, we propose a multi-gateway architecture and apply the ETX metric to the OSPF routing protocol to improve the performance of the wireless mesh network. |
URI: | http://140.113.39.130/cdrfb3/record/nctu/#GT009217523 http://hdl.handle.net/11536/73235 |
显示于类别: | Thesis |
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