Abstract
To improve the transmission performance, cluster structure is constructed for large scale cognitive radio ad hoc networks (CRAHNs). However, dynamic spectrum access (DSA) and blind information environment in CRAHN make the clustering design extremely challenging. To solve this problem, we propose a novel clustering algorithm to construct and maintain the cluster structure. The proposed spectrum-aware clustering algorithm is designed to maximize common channels inside a cluster and to minimize common channels between adjacent clusters. To maintain the cluster architecture, we propose a proactive channel handoff scheme to reduce the interference with PUs. The simulation results show that the constructed clusters have more intra-cluster common channels and less inter-cluster common channels. And the proposed handoff scheme can adjust to the changing PU activities.
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Acknowledgement
This work is supported by National Natural Science Foundation of China (61272454) and Specialized Research Fund for the Doctoral Program of Higher Education (20130141110022).
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Zhang, H., Xu, N., Xu, F., Wang, Z. (2016). Spectrum-Aware Clustering with Proactive Handoff for Distributed Cognitive Radio Ad Hoc Networks. In: Yang, Q., Yu, W., Challal, Y. (eds) Wireless Algorithms, Systems, and Applications. WASA 2016. Lecture Notes in Computer Science(), vol 9798. Springer, Cham. https://doi.org/10.1007/978-3-319-42836-9_39
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DOI: https://doi.org/10.1007/978-3-319-42836-9_39
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