Transient Analysis of CRN with Provision of Finite Buffer for Secondary Users
B.B.V. Satya Vara Prasad1, B. Basaveswara Rao2, V. Vasanta Kumar3, K. Chandan4
1B.B.V. Satya Vara Prasad, Research Scholar Department of CSE, Acharya Nagarjuna University, Guntur, India & Assistant Professor in KLEF, Vaddeswaram, India.
2B. Basaveswara Rao, University Computer Centre, Acharya Nagarjuna University, Guntur, India.
3V. Vasanta Kumar, Professor& Head, Department of Mathematics, K L E F, Vijayawada, India.
4K. Chandan, Professor, Department of Statistics, Acharya Nagarjuna University, Guntur, India.
Manuscript received on 13 April 2019 | Revised Manuscript received on 18 May 2019 | Manuscript published on 30 May 2019 | PP: 2461-2473 | Volume-8 Issue-1, May 2019 | Retrieval Number: A2233058119/19©BEIESP
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Abstract: The transient analysis of secondary users with opportunistic access to the spectrum with the provision of buffer is studied in this paper. As the research issues discussed in this paper deals with multiple channels for service provision and a buffer used for waiting to avail service, the analytical finite queuing model, M/M/C/K fits to the problem scenario is opted. With the progression of time, the spectrum management with Cognitive Radio Networks (CRN) becomes unstable as the demand from both secondary and primary users varies. To handle these fluctuations in arrival rate, this paper focuses on the issues of provision of buffer not only to interrupted secondary users but also to the newly arriving secondary users when all channels are busy. The ultimate goal of spectrum management is to avail maximum revenue with the effective usage of resources and the provision of same buffer also for newly arriving users whether increases in throughput is discussed. In this paper, much focus is carried towards the optimal usage of buffer for increasing the service rate to the secondary users waiting for opportunistic access of the spectrum so that maximum revenue can be generated. The timely varying problems are handled by modeling the system with priorities among the users while accessing the channels and occupying the buffer. The reservation of channels by newly arrived secondary users waiting in buffer deals with the admission control issues with a confidence factor in channel access. The paper modeled to deal these objectives by deriving differential equations and important performance metrics are evaluated. Numerical illustration is carried out and the analytical results presented as tables and graphs and conclusions are drawn.
Index Terms: Cognitive Radio Networks, M/M/C/K, Queue Length, Throughput, Blocking Probability

Scope of the Article: Cognitive Radio Networks