Cognitive Radio Architecture: The Engineering Foundations of Radio XML

Chapter 10. USER-DOMAIN KNOWLEDGE

Although there are many ways to acquire knowledge about users, the CRA emphasizes the passive observation of user actions in the environment, drawing inferences rather than asking the user what may be perceived as stupid questions. Since radio is a technical domain, the domain knowledge is structured into radio physics, regulations, and practices across the relevant bands and modes. The user domain is less structured and vastly more complex, even in a single microworld focused on the immediate audio-visual scenes in which users are situated. Although sensory perception is a major technology challenge so is the complexity of user-domain knowledge. This chapter addresses sensing, perception, and mutual grounding as primary methods of relating user-domain knowledge to QoI enhancement by AACRs. This may be simplified by the modeling of users both as individuals and by class, and by a priori knowledge of user domains with sociological and psychological models.

The primary iCR sensory-perception capabilities for the user domain are the keyboard, audio, and video. AACRs use conventional tactile input to perceive user actions (e.g., tuning the radio, entering a phone number, clicking on a web site) along with visual displays of text and graphics. Auxiliary sensory-perception capabilities may include navigation, acceleration, temperature, barometric pressure, and smell or wind velocity. This chapter focuses on the perception of those aspects of a <Scene/> ...