Proceedings of first ACM/IEEE international workshop on Mobility in the evolving internet architecture
A Context Driven Architecture for Cognitive Radio Nodes
Wireless Personal Communications: An International Journal
Cognitive Radio Dynamic Access Techniques
Wireless Personal Communications: An International Journal
Connectivity opportunity selection in heterogeneous wireless multi-hop networks
Pervasive and Mobile Computing
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In the cognitive wireless networks, the channel handoff strategy which controls the communication in a channel to migrate to another channel when primary users hope to access directly affects the quality-of-service of cognitive users and primary users. In this paper, we propose a Cognitive Global Control Plane (CGCP) which embraces the controlling of spectrum sensing, channel handoff and node mobility. With the CGCP architecture, an adaptive channel handoff strategy is given out. We analyze the handoff algorithm with Markov chain theory and some tradeoffs between performance and overhead. The results of performance evaluation show that the channel handoff strategy can adaptively and flexibly perform channel handoff.