Model-Based Radio and Channel Assignment in IEEE 802.11 Wireless Mesh Networks

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Local area wireless networks based on IEEE 802.11 have a cellular topology: stations associate to one of several access points, which are connected using a wired backbone. As connectivity is only possible close to the access points, a dense infrastructure is needed, resulting in high costs. A Wireless Mesh Network (WMN) replaces the wired backbone by radio: only few access points are installed; mesh points extend their coverage by forwarding data over wireless hops. Hence, deployment costs are reduced. Since, the wireless medium has to be shared by the nodes, multi-hop traffic requires a high capacity. Hence, mechanisms which increase the system capacity in wireless mesh networks are needed.