LU-MAC: Licensed and Unlicensed MAC Protocol for Cognitive WiFi Network with Jamming-resistant

Ubiquitous devices used in the day-to-day activities of the modern world, increases the usage of internet via WiFi network. The development of technology and the raise in internet access leads to wireless spectrum scarcity in the ISM band. The deployment of Cognitive radio (CR) in the WiFi network with dynamic channel switching can overcome the spectrum shortage. This integration brings the challenge of jamming in CR network and WiFi network together devastates the availability of the spectrum in Cognitive WiFi (CWF) network. A novel LU-MAC protocol is proposed for CWF network that dynamically operate in both licensed and unlicensed band to increase the spectrum availability with jamming resistant. The LU-MAC protocol have been designed with control frame specification, Data Channel Switching (DCS) process and coordination modules, control channel switching process, synchronization module to obtain the benefit of cognitive radio technology in WiFi network. It is deployed using Intrusion Detection System (IDS), Random Frequency Hopping Pattern (RFHP) generation algorithm and Statistic-based Reactive Channel Switching (SRCS) algorithms to counter the jamming attack. The performance of the LU-MAC protocol is evaluated using the Glomosim simulator. It shows the efficient communication in CWF network with the existence of the jamming attacker.