Autonomous Reconfiguration for Wireless Mesh Network

The demands for the network usage are increasing day by day. During their lifetime, multihop wireless mesh networks (WMNs) experience frequent link failures caused by channel interference, dynamic obstacles, and/or applications’ bandwidth demands, which may degrade the system performance. This paper presents an autonomous network reconfiguration system (ANRS) that enables a multiradio WMN to autonomously recover from local link failures to preserve network performance. Using ANRS necessary changes are made in local and radio channel assignments for failure recovery. Next, based on the thusgenerated configuration changes, the system cooperatively reconfigures network settings among local mesh routers. ANRS has been implemented extensively on our IEEE 802.11based WMN through ns2-based simulation. Our evaluation results show that ANRS outperforms existing failure-recovery schemes in improving channel-efficiency and in the ability of meeting the applications’ bandwidth demands. Keywords-IEEE 802.11, multiradio wireless mesh networks (mr-WMNs), Routing, selfreconfigurable networks, wireless link failures.