An efficient MAC protocol for distributed cognitive radio networks

作者：Li Xiaoyan^*; Guo Chaoping; Chen Lei

来源：Revista Tecnica de la Facultad de Ingenieria Universidad del Zulia, 2016, 39(9): 388-394.

DOI：10.21311/001.39.9.48

• Available channels
• Channel hopping
• Cognitive radio network
• Cognitive radio networks (CRNs)
• Comprehensive performance
• Quorum systems
• Rendezvous
• Secondary users

Rendezvous is the essential operation in distributed cognitive radio networks (CRNs). Rendezvous means that secondary users (SUs) access the same channel at the same time to establish a communication link between each other. Channel hopping (CH) schemes have been proposed to establish pairwise rendezvous. But how to carry out the CH scheme with the MAC protocol is a challenging problem. To solve this problem, we propose a MAC protocol for distributed CR networks(CRNs), with the aim of using the idle spectrum more efficiently. Under this framework, a CH scheme based on quorum theory was proposed. Our CH scheme can guarantee rendezvous between any two SUs if they have at least a common available channel. Simulation results show that the proposed MAC protocol with CH scheme can get a better comprehensive performance in terms of throughput and packet delay.

• 出版日期2016