Dynamic Outage, Availability, and Interference Models for Mobile Cognitive Radios

This paper analyzes a scenario where a cognitive radio (CR) moves through a field of primary users (PU). As the CR moves, it goes through periods when a given channel is available and when the channel is unavailable (i.e. an outage) due to the CR avoiding a primary user. In addition, there are periods when the channel is deemed available but, in fact, CR communication could interfere with the primary user. The paper derives the distribution of these different periods under different detection and interference scenarios. The results provide insights into how useful a channel is to a CR and the impact of the CR on the PU. The model applies to a scenario of unmanned aircraft access to TV whitespace.