Expected Path Duration Maximized Routing Algorithm in CR-VANETs
In Cognitive-Radio (CR) enabled Vehicular Ad-Hoc NETworks (CR-VANETs), high mobility of vehicles and dynamically varying spectrum occupation statuses frequently cause the established routes broken. To deal with the increasing mobility and dynamics of accessible spectrum, the authors propose an Expected Path-Duration Maximized Routing (EPDM-R) algorithm in CR-VANETs. Specifically, they study the scenario of cognitive radio enabled vehicles communications freeway mobility model. The vehicles, as Secondary Users (SUs), can access the licensed channels of Primary Users (PUs) when these channels are not occupied, where the behaviors of PUs follow the call-based model.