An Opportunistic Pervasive Networking Paradigm: Multi‐Hop Cognitive Radio Networks
Didem Gözüpek, Fatih Alagöz · 2011
The authors presents an overview of the existing work and research challenges with regard to the ad hoc cognitive radio network (CRNs) in general. They outline the research issues concerning spectrum sensing, decision, sharing and mobility in different layers of the protocol stack. On the other hand, the authors in present a survey of the MAC protocols in CRNs in general, they discuss both infrastructure-based and ad hoc CRNs. This chapter focuses on MAC protocols specific to MHCRNs. It provides a deeper discussion on a narrower and more specific topic. The chapter outlines the challenges presented in MAC design of MHCRNs, accompanied by a comparison of multi-channel networks and MHCRNs. It briefly discusses the key MAC protocols for MHCRNs, listing their advantages and disadvantages. The chapter makes a comparison of the investigated protocols and provides future directions for researchers with regard to open issues that have not been addressed thoroughly. Controlled Vocabulary Terms access protocols; cognitive radio