Stochastic modelling and analysis: a computational approach
Stochastic modelling and analysis: a computational approach
Wcdma for Umts
Adaptive Bandwidth Reservation and Admission Control in QoS-Sensitive Cellular Networks
IEEE Transactions on Parallel and Distributed Systems
Call admission control in mobile cellular networks: a comprehensive survey: Research Articles
Wireless Communications & Mobile Computing
Introduction to Operations Research and Revised CD-ROM 8
Introduction to Operations Research and Revised CD-ROM 8
Public Safety Communication Using Commercial Cellular Technology
NGMAST '08 Proceedings of the 2008 The Second International Conference on Next Generation Mobile Applications, Services, and Technologies
Enhancing interoperability in heterogeneous mobile wireless networks for disaster response
IEEE Transactions on Wireless Communications
Call admission control in wireless networks: a comprehensive survey
IEEE Communications Surveys & Tutorials
Public safety and commercial spectrum sharing via network pricing and admission control
IEEE Journal on Selected Areas in Communications
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Dynamic spectrum access (DSA) based on interruptible spectrum leasing allows secondary users (SUs) to lease a licensed, but idle, spectrum that is owned by primary users (PUs) on condition that the PUs preempt the access to the leased spectrum. This paper considers a DSA scenario where the SUs opportunistically use the primary spectrum in addition to their own band and the PUs use their own band regardless of the opportunistic access. This operating scenario can contribute to leverage the spectrum utilization by exploiting underutilized spectrum resources, but involves a problem that the SUs may be forced to interrupt on-going services in response to the PUs' reclamation of the leased spectrum. In this paper, we address the optimal call admission control (CAC) problem in order to coordinate the DSA based on interruptible spectrum leasing by considering the tradeoff between the additional spectrum use and the penalty on the service interruption. To this end, we adopt the profit of the secondary wireless service provider as a cost function of the CAC policy in a market mechanism manner. The optimization problem is modeled as a profit maximization problem, and a linear programming (LP) formulation of the semi-Markov decision process approach is provided. Through the simulation results, we analyze the LP solution of the optimal CAC for the leasing based DSA and demonstrate that the proposed CAC policy judiciously uses the access opportunities of the SUs considering the service interruption.