Research on 802.11s RM-AODV Path Selection Protocol
GU Da-gang · Jiangxi kexue · 2010
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.Considering tree-based netflow of wireless mesh network,RM-AODV messages are also reused to support tree-based proactive extension in IEEE 802.11s standard.In this paper,simulations are performed in a typical wireless mesh work topology to research the path discovery time of RM-AODV,and analyze the impact of relative position with root portal on path discovery time.