International Journal of Communication Networks and Information Security
Cognitive radio networks represent a new class of wireless networks where the channels are not permanently available, depending on the traffic activity of licensed users who have the priority to use these channels. The authors design a novel routing procedure for multi-hop cognitive radio networks composed of adequate metrics and a strategy to combine these metrics. The objective is then to increase channel availability when the routes are established. Two global metrics are defined. The stability metric evaluates the utilization efficiency of channels by capturing their sporadic availability to cognitive users.