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A Framework to Radio Layer Operation in Cognitive Networks

In this work, we present a schema to classify the signal sensed as well as to classify the spectrum band occupation according to signals sensed. We also present a list of functionalities that ensure information and operations need to upper layers perform interference avoidance, power allocation, sensing control, spectrum characterization, spectrum selection and reconfiguration. With this list, we highlight the radio configuration features that are relevant to achieve cognitive network goals. Finally, we evaluate the expressivity of proposed schema to hit the main cognitive network goals and we conclude that our propose is relevant to cognitive radio research once it define de minimum behavior and responsibilities to cognitive radio layer.