An Intelligence-Based Framework for Managing WLANs: The Potential of Non-Contiguous Channel Bonding

Managing WLANs efficiently while optimizing performance remains a challenge. This article proposes an innovative approach that utilizes the strengths of Software-Defined Networking (SDN) to create an advanced framework for WLAN management. Since the implementation of fully centralized solutions is not always feasible, the proposed framework adopts both decentralized and centralized policies. By leveraging the programmability of SDN, the framework aims to enhance WLAN performance and improve overall network efficiency. We present the design, implementation, and evaluation of the SDN-based framework, showcasing the potential of non-contiguous channel bonding and channel allocation. Algorithms for coexistence of heterogeneous WLANs, channel bonding and management are developed. We investigate the performance of heterogeneous WLANs and show how the framework can facilitate management of mixed WLANs. We conducted extensive simulation experiments that confirmed the need for such framework. The results have shown that channel assignment can significantly improve network throughput as well the fairness among WLAN users. However; under high interference; non-contiguous channel bonding did not outperform contiguous channel bonding.