Cognitive Radio Network Architecture: Part II - Trusted Network Layer Structure

Cognitive radios shall form Cognitive Radio Network (CRN) to complete the packets delivery. As cognitive radio network is a general multi-hop wireless heterogeneous network, trust becomes a critical factor for network layer functions and network operation. The authors explore and develop the mathematical framework of trust in CRN, to further develop trusted routing with relevant explorations on network layer and above functions. Cognitive radio pioneered by J. Mitola III from Software Defined Radio (SDR) was originally considered to improve spectrum utilization and FCC endorsed such an idea shortly. Cognitive radios have been generally considered as a technology to identify the opportunities using the "Spectrum holes" for communications.