The Wireless Mesh Network (WMN) has become a focus in res earch of wireless broadband communications . In a switching technologies - based wireless Mesh network, the entire network is regarded as an IP subnet, so it cannot be applied in situations where large coverage is required . The use of cooperative relaying technologies can improve the transmission rate and reliability of wireless link; while the wireless Mesh network, once integrated with cooperative relaying technologies and routing technologies , can improve its spectrum efficiency and cover a wide area . However, there are many problems to be solved with respect to standardization , key technologies research and industrialization . Therefore , the application of cooperative relaying technologies in wireless Mesh networks is still a great challenge .