Optimal number of frames transmitted in a sensing based opportunistic spectrum access

The opportunistic spectrum access (OSA) has emerged as promising approach to increase the efficiency in spectrum sharing. The important feature of the OSA is to enable the unlicensed users or secondary users (SUs) to search for unused spectrum vacated by idle licensed user or primary user (PU). In t...

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Bibliographic Details
Published in:Physical communication 2018-02, Vol.26, p.156-161
Main Authors: Arunachalam, Viswanathan, Mishra, Garima, Dharmaraja, S.
Format: Article
Language:English
Subjects:
Alternating renewal process
Objective function
Opportunistic spectrum access
Optimal stopping
White space
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Summary:The opportunistic spectrum access (OSA) has emerged as promising approach to increase the efficiency in spectrum sharing. The important feature of the OSA is to enable the unlicensed users or secondary users (SUs) to search for unused spectrum vacated by idle licensed user or primary user (PU). In this paper, we consider the maximization of the number of frames sent by the SUs during the idle period (white space) of the PU, while avoiding the infringement into the privileges of the PU. We set up this problem in terms of an optimal stopping problem. Explicit expression for the optimal number of frames that can be sent by the SUs in a white space is derived. Performance analysis for channel utilization and channel idle time is presented. Finally, the analytical results for optimal number of frames sent by SU in white space are numerically illustrated.
ISSN:1874-4907
1876-3219
DOI:10.1016/j.phycom.2017.12.009