A novel Distributed Spectrum-Aware Clustering (DSAC) scheme is proposed in the context of Cognitive Radio Sensor Networks (CRSN). DSAC aims at forming energy efficient clusters in a self-organized fashion while restricting interference to Primary User (PU) systems. The spectrum-aware clustered structure is presented where the communications consist of intracluster aggregation and inter-cluster relaying. In order to save communication power, the optimal number of clusters is derived and the idea of groupwise constrained clustering is introduced to minimize intra-cluster distance under spectrum-aware constraint. In terms of practical implementation, DSAC demonstrates preferable scalability and stability because of its low complexity and quick convergence under dynamic PU activity. Finally, simulation results are given to validate the proposed scheme. 978-1-4244-9268-8/11/$26.00 ©2011 IEEE This full text paper was peer reviewed at the direction of IEEE Communications Society subject matter experts for publication in the IEEE Globecom 2011 proceedings.
The recent work by REF suggests a spectrum-aware clustering scheme to enable efficient communication in CRSN by intra-cluster aggregation and inter-cluster relaying and also finds optimal node number in a cluster.
Distributed Spectrum-Aware Clustering in Cognitive Radio Sensor Networks
2011 IEEE Global Telecommunications Conference - GLOBECOM 2011
2011 IEEE Global Telecommunications Conference - GLOBECOM 2011
Computer Science Mathematics