Abstract: Traditional routing protocols for wireless mesh network(WMN) use the routing information carried by mana-gement frames to calculate,compare and choose route．However the necessary routing information is not available because the management frames can be lost due to the instability of wireless environment,which degrades the performance of network．This paper introduced a new routing protocol named B.A.T.M.A.N．(Better Approach To Mobile Ad-hoc Networking) based on statistics．The loss of management frames makes sense because this protocol decides best paths according to the packets delivery rate of management frames．Experiment shows that B.A.T.M.A.N．outperforms OLSR in wireless mesh network and achieves greater advantages in mobile network．

Key words: Routing protocol,Wireless mesh network(WMN),B.A.T.M.A.N.,OLSR