An Evaluation of Connectivity in Mobile Wireless Ad Hoc Networks
DSN '02 Proceedings of the 2002 International Conference on Dependable Systems and Networks
Latency of wireless sensor networks with uncoordinated power saving mechanisms
Proceedings of the 5th ACM international symposium on Mobile ad hoc networking and computing
Impact of interferences on connectivity in ad hoc networks
IEEE/ACM Transactions on Networking (TON)
Distributed energy management algorithm for large-scale wireless sensor networks
Proceedings of the 8th ACM international symposium on Mobile ad hoc networking and computing
CRAHNs: Cognitive radio ad hoc networks
Ad Hoc Networks
Connectivity of cognitive radio networks: proximity vs. opportunity
Proceedings of the 2009 ACM workshop on Cognitive radio networks
Stochastic geometry and random graphs for the analysis and design of wireless networks
IEEE Journal on Selected Areas in Communications - Special issue on stochastic geometry and random graphs for the analysis and designof wireless networks
Practical unicast and convergecast scheduling schemes for cognitive radio networks
Journal of Combinatorial Optimization
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This paper investigates the dynamic connectivity and transmission latency of cognitive radio ad-hoc networks (secondary networks) coexisting with licensed networks (primary networks) that experience time-varying on-off links. It is shown that there exists a critical density 驴 s * such that if the density of secondary networks is larger than 驴 s * , the secondary network percolates at all time t 0, i.e., there exists always an infinite connected component in the secondary network under the time-varying spectrum availability. Furthermore, the upper and lower bounds of 驴 s * are derived and it is shown that they do not depend on the random locations of primary and secondary users, but only on the network parameters, such as active/inactive probability of primary users, transmission range, and the user density. Moreover, due to the dynamic behavior of the unoccupied spectrum, the secondary network can be disconnected at all times. It is proven that it is still possible for a SU to transfer its message to any destination with a certain delay with probability one. This delay is shown to be asymptotically linear in the Euclidean distance between the transmitter and receiver.