计算机工程与应用 ›› 2011, Vol. 47 ›› Issue (21): 109-111.

• 网络、通信、安全 • 上一篇    下一篇

802.11s中RM-AODV路径选择协议的研究

张 牧1,严军荣2   

  1. 1.贵阳学院 计算机系,贵阳 550005
    2.南京邮电大学 信息网络技术研究所,南京 210003
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-07-21 发布日期:2011-07-21

Research on 802.11s RM-AODV path selection protocol

ZHANG Mu1,YAN Junrong2   

  1. 1.Department of Computer Science,Guiyang University,Guiyang 550005,China
    2.Institute of Information Networks Technology,Nanjing University of Posts and Telecommunications,Nanjing 210003,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-07-21 Published:2011-07-21

摘要: RM-AODV路径选择协议是IEEE 802.11s标准中HWMP路由选择协议的基础。不同于传统AODV协议在第3层使用IP地址路由和跳数作为路由metric,RM-AODV工作在第2层使用MAC地址和空时metric进行路径选择。为了适应无线mesh网络流量呈树状汇聚的特点,IEEE 802.11s标准还对RM-AODV进行树状先验式扩展。在典型无线mesh网络拓扑中通过仿真对RM-AODV的路径发现时间进行研究,进一步分析相对根节点的不同位置对路径发现时间的影响。

关键词: 无线mesh网络, 路径选择, 混合无线mesh网络协议(HWMP), 按需距离矢量路由协议(RM-AODV)

Abstract: Radio-Metric Ad hoc On-Demand Distance Vector(RM-AODV) path selection protocol is the basis of HWMP path selection protocol defined in IEEE 802.11s standard.Different from traditional AODV routing protocol working on layer 3 with IP address and using hop count as the routing metric,RM-AODV works on layer 2 with MAC address and uses airtime metric for path selection.In view of tree-based netflow of wireless mesh network,RM-AODV messages are also reused to support tree-based proactive extension in IEEE 802.11s standard.Simulations are performed in a typical wireless mesh work topology to research the path discovery time of RM-AODV,and the impact of relative position with root portal on path discovery time is analysed.

Key words: Wireless Mesh Network(WMN), path selection, Hybrid Wireless Mesh Protocol(HWMP), Radio-Metric Ad hoc On-Demand Distance Vector(RM-AODV)