Probability, stochastic processes, and queueing theory: the mathematics of computer performance modeling
On optimal call admission control in cellular networks
Wireless Networks
Call Admissibility for Multirate Traffic in Wireless ATM Networks
INFOCOM '97 Proceedings of the INFOCOM '97. Sixteenth Annual Joint Conference of the IEEE Computer and Communications Societies. Driving the Information Revolution
NeXt generation/dynamic spectrum access/cognitive radio wireless networks: a survey
Computer Networks: The International Journal of Computer and Telecommunications Networking
Chicago spectrum occupancy measurements & analysis and a long-term studies proposal
TAPAS '06 Proceedings of the first international workshop on Technology and policy for accessing spectrum
Challenges of real-time secondary usage of spectrum
Computer Networks: The International Journal of Computer and Telecommunications Networking
Maximizing the capacity of mobile cellular networks with heterogeneous traffic
Computer Networks: The International Journal of Computer and Telecommunications Networking
IEEE 802.22: the first cognitive radio wireless regional area network standard
IEEE Communications Magazine
Power Control and Channel Allocation in Cognitive Radio Networks with Primary Users' Cooperation
IEEE Transactions on Mobile Computing
Adaptive admission control in mobile cellular networks with streaming and elastic traffic
ITC20'07 Proceedings of the 20th international teletraffic conference on Managing traffic performance in converged networks
Handoff prioritization and decision schemes in wireless cellular networks: a survey
IEEE Communications Surveys & Tutorials
Optimal spectrum sensing framework for cognitive radio networks
IEEE Transactions on Wireless Communications
Spectrum sensing in cognitive radio networks: requirements, challenges and design trade-offs
IEEE Communications Magazine
A survey on spectrum management in cognitive radio networks
IEEE Communications Magazine
Full length article: Proactive channel access in dynamic spectrum networks
Physical Communication
Cognitive radio: brain-empowered wireless communications
IEEE Journal on Selected Areas in Communications
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We study two important aspects to make dynamic spectrum access work in practice: the admission policy of secondary users (SUs) to achieve a certain degree of quality of service and the management of the interference caused by SUs to primary users (PUs). In order to limit the forced termination probability of SUs, we evaluate the Fractional Guard Channel reservation scheme to give priority to spectrum handovers over new arrivals. We show that, contrary to what has been proposed, the throughput of SUs cannot be maximized by configuring the reservation parameter. We also study the interference caused by SUs to PUs. We propose and evaluate different mechanisms to reduce the interference, which are based on simple spectrum access algorithms for both PUs and SUs and channel repacking algorithms for SUs. Numerical results show that the reduction can be of one order of magnitude or more with respect to the random access case. Finally, we propose an adaptive admission control scheme that is able to limit simultaneously the forced termination probability of SUs and what we define as the probability of interference. Our scheme does not require any configuration parameters beyond the probability objectives. Besides, it is simple to implement and it can operate with any arrival process and distribution of the session duration.