An Approach to Using Cognition in Wireless Networks
MetadataShow full item record
Third Generation (3G) wireless networks have been well studied and optimized with traditional radio resource management techniques, but still there is room for improvement. Cognitive radio technology can bring significantcant network improvements by providing awareness to the surrounding radio environment, exploiting previous network knowledge and optimizing the use of resources using machine learning and artificial intelligence techniques. Cognitive radio can also co-exist with legacy equipment thus acting as a bridge among heterogeneous communication systems. In this work, an approach for applying cognition in wireless networks is presented. Also, two machine learning techniques are used to create a hybrid cognitive engine. Furthermore, the concept of cognitive radio resource management along with some of the network applications are discussed. To evaluate the proposed approach cognition is applied to three typical wireless network problems: improving coverage, handover management and determining recurring policy events. A cognitive engine, that uses case-based reasoning and a decision tree algorithm is developed. The engine learns the coverage of a cell solely from observations, predicts when a handover is necessary and determines policy patterns, solely from environment observations.
- Doctoral Dissertations 
Showing items related by title, author, creator and subject.
Chen, Ruiliang (Virginia Tech, 2008-02-19)The tremendous success of various wireless applications operating in unlicensed bands has resulted in the overcrowding of those bands. Cognitive radio (CR) is a new technology that enables an unlicensed user to coexist ...
Shatila, Hazem Sarwat (Virginia Tech, 2012-03-20)As wireless technologies evolve, novel innovations and concepts are required to dynamically and automatically alter various radio parameters in accordance with the radio environment. These innovations open the door for ...
Blending cognitive rule-based, process-based, and context-based theories in the development of online grammar instruction Zaldivar, Marc Robert (Virginia Tech, 2008-10-28)This study proposes to blend contemporary educational research in order to design an online instructional environment. The goal was to create an environment that would better educate learners about grammar use in higher ...