胡伏湘

(长沙商贸旅游职业技术学院信息系，中国 长沙　410116)

基于AODV的无线Mesh网络路由协议优化设计

胡伏湘*

(长沙商贸旅游职业技术学院信息系，中国 长沙410116)

摘要无线Mesh网络(WMN)融合了WLAN和Ad hoc网络的优势，具有高速、多跳和自组织的特点，广泛用于会场、医院和车站等场合.由于其开放性和无线链路，导致路由协议效率不高．针对Ad hoc单跳路由的缺陷，从WMN的体系结构入手，提出了设计原则和方法，并在AODV的基础上，通过修改数据包的格式，优化设计了相应的网络协议，并给出了相应的路由算法，然后选择时延和负载两个核心指标，在OPNET平台上进行了仿真实现，结果表明，15个节点组成的WMN和4个节点的网络相比，其关键指标值优势明显，说明这种算法更加适合于规模较大的网络．

关键词无线Mesh网络；路由协议；AODV；数据包；OPNET

Optimization Design of Routing Protocol of

Wireless Mesh Network Based on Aodv

HUFu-xiang*

(Department of Information, Changsha Commerce and Tourism College, Changsha 410116, China)

AbstractCombining the merits of WLAN and the Ad hoc network, Wireless Mesh Network(WMN) has the characteristics of high speed, multi-hop, self-organization, and can be widely used in the venue, hospital, station, etc. However, the routing protocol is low efficiency due to its openness and wireless link. Aiming at overcoming defects of the single hop routing of Ad hoc, this paper puts forward the design principles and basic methods, which starts from the architecture of WMN. On the basis of AODV, optimization design of the network protocol and the corresponding algorithm are presented by modifying the packet format. Finally, the protocols are simulated on the OPNET platform using two key indexes of delay and load. The results show that the MWN with 15 nodes is superior comparing with 4 modes. Therefore, the algorithm is more suitable for larger networks.

Key wordsWireless Mesh Network; routing protocol; AODV; package; OPNET

无线Mesh网络(Wireless Mesh Network-WMN)是一种基于IP协议的无线宽带接入技术，它融合了WLAN和Ad hoc两者的优势，支持多点对多点的网状通信模式，具有自动组网、自动修复、多跳级联和节点自我管理等智能优势以及移动性、宽带宽和无线定位的特点，是一种高速率、大容量和宽覆盖范围的网络，是解决最后1km无线宽带接入瓶颈问题的理想方案．任意无线设备节点在接入此网络后，既能发送和接收信号，又具备路由转发功能，即充当路由器，能同时与一个或多个对等节点直接通信.其最大好处在于：如果邻近的AP由于流量过大而导致拥塞，数据可以自动重新路由到一个通信流量较小的相邻……