Multilayer sensors for the Sensorial Radio Bubble

We propose to define a volume around cognitive radio equipments, typically terminals, called the ”Sensorial Radio Bubble” or SRB, the diameter of which is at the scale of the sensing possibility of the equipment. The SRB gives communication equipments the ability to explore the radio environment in order to provide knowledge about the spatial and spectral environment, and some context awareness. By analogy to the human sensorial bubble, we assert that this could permit the cognitive radio equipment to plan his coming behavior in order to predict and anticipate its reaction to environment evolution. In this paper we present details of the sensors required in the Sensorial Radio Bubble. The sensors of the SRB may be classified in function of the OSI layers. A simplified three layer model is presented for our purpose. An example of sensor of the lower layer is spectrum hole detection, for the intermediate layers the blind standard recognition sensor is described, and finally for the higher layers a video sensor is presented.