Smart Preliminary Channel Access to Support Real-Time Traffic in Wi-Fi Networks

Band-Steering for Dual-Band Wi-Fi Access Points Optimizing Dual-Band Wi-Fi networks

Wi-Fi Calling and the Support of IMS Services over Carrier Wi-Fi Networks

Carrier Wi-Fi deployments are helping mobile operators take advantage of already deployed evolved packet core (EPC)-based services for supporting trusted Wi-Fi access networks. Approaches include reusing P-GW -based accounting, policy enforcement, and regulatory services for supporting Wi-Fi users. With Wi-Fi calling, similar EPC-based services can be used to support IMS-based rich media servic...

Detecting and Blocking Unauthorized Access in Wi-Fi Networks

Academic and commercial 802.11 hotspots often use an SSLsecured captive portal to authenticate clients. Captive portals provide good usability and interoperability, but poor security. After a captive portal has authenticated a client, session hijacking and freeloading allow attackers to capture or use the client’s session. Freeloading does not require special tools and, surprisingly, is strengt...

Hybrid Algorithm for Frequency Channel Selection in Wi-Fi Networks

This article proposes a hybrid algorithm for spectrum allocation in cognitive radio networks based on the algorithms Analytical Hierarchical Process (AHP) and Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) to improve the performance of the spectrum mobility of secondary users in cognitive radio networks. To calculate the level of performance of the proposed algorithm...

Hybrid Algorithm for Frequency Channel Selection in Wi-Fi Networks

This article proposes a hybrid algorithm for spectrum allocation in cognitive radio networks based on the algorithms Analytical Hierarchical Process (AHP) and Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) to improve the performance of the spectrum mobility of secondary users in cognitive radio networks. To calculate the level of performance of the proposed algorithm...