Connectivity of cognitive radio networks: proximity vs. opportunity

Authors:
Wei Ren;Qing Zhao;Ananthram Swami
Affiliations:
University of California at Davis, Davis, CA, USA;University of California at Davis, Davis, CA, USA;Army Research Laboratory, Adelphi, MD, USA
Venue:
Proceedings of the 2009 ACM workshop on Cognitive radio networks
Year:
2009

Citing 4
Cited 2

On the minimum node degree and connectivity of a wireless multihop network

Proceedings of the 3rd ACM international symposium on Mobile ad hoc networking & computing
Impact of interferences on connectivity in ad hoc networks

IEEE/ACM Transactions on Networking (TON)
Power control in cognitive radio networks: how to cross a multi-lane highway

IEEE Journal on Selected Areas in Communications - Special issue on stochastic geometry and random graphs for the analysis and designof wireless networks
Information-theoretic upper bounds on the capacity of large extended ad hoc wireless networks

IEEE Transactions on Information Theory

Percolation theory based connectivity and latency analysis of cognitive radio ad hoc networks

Wireless Networks
Temporal Traffic Dynamics Improve the Connectivity of Ad Hoc Cognitive Radio Networks

IEEE/ACM Transactions on Networking (TON)

Quantified Score

Hi-index	0.00

Visualization

Abstract

We address the connectivity of large-scale ad hoc cognitive radio networks, where secondary users exploit channels temporarily and locally unused by primary users and the existence of a communication link between two secondary users depends not only on the distance between them but also on the transmitting and receiving activities of nearby primary users. We introduce the concept of connectivity region defined as the set of density pairs -- the density of the secondary users and the density of the primary transmitters -- under which the secondary network is connected. Using theories and techniques from continuum percolation, we analytically characterize the connectivity region of the secondary network by showing its three basic properties and analyzing its two critical parameters. Furthermore, we reveal the tradeoff between proximity (the number of neighbors) and the occurrence of spectrum opportunities by studying the impact of secondary users' transmission power on the connectivity region of the secondary network, and design the transmission power of the secondary users to maximize their tolerance to the primary traffic load.