A Cognitive CSMA-based Multichannel MAC Protocol for Cognitive Radio Networks
Po-Yao Huang, Kwang‐Cheng Chen, Sheng-Lun Chiou · Hokkaido University Collection of Scholarly and Academic Papers (Hokkaido University) · 2009
Multichannel media access control (MAC) protocols have been widely considered for future mobile ad hoc networks and various wireless data networks. However, ALOHA-based protocols have been extensively studied in current researches for their simplicities both in design and analysis. To cope with co-existing multiple systems under the cognitive radio (CR) paradigm, we introduce the cognition capability and CSMA into multichannel MAC protocol, along with learning functionality of CR and a multichannel stabilization mechanism. Via facilitating spectrum sensing, cognition and adaptation for probability of transmission attempt optimize the proposed cognitive CSMA-based multichannel MAC protocol. Simulation results validate our analysis of steady-state approximation and suggest a pertinent throughput improvement over existing multichannel MAC protocols.