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Information Sciences and Systems 2013 pp 87–95Cite as

Optimal Behaviour of Smart Wireless Users

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Part of the book series: Lecture Notes in Electrical Engineering ((LNEE,volume 264))

Abstract

We consider a smart or cognitive user (CU) that operates as a secondary user of a cognitive channel. Before transmission, the CU samples the channel until it estimates that it can be accessed successfully. When the CU transmits a packet, it may nevertheless be unsuccessful because its estimate was wrong. The CU then knows about its failure and stops the ongoing transmission sometime before the transmission ends. Then the CU restarts sensing the channel. In this paper we analyse the total delay experienced by a CU. We derive the first and second moments of the effective transmission time of a packet sent by such a smart user, in view of the fact that the sensing and errors made in transmitting a packet when the channel is actually unavailable, will introduce additional delay. This is similar to a “vacation time” in queues, though it differs from conventional vacation time models because such “sampling vacations” can be beneficial to the future transmission.

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Author information

Authors and Affiliations

  1. Intelligent Systems and Networks, Imperial College London, London, SW7 2BT, UK

    Boris Oklander & Erol Gelenbe

Authors
  1. Boris Oklander
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  2. Erol Gelenbe
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Corresponding author

Correspondence to Boris Oklander .

Editor information

Editors and Affiliations

  1. Dept of Electrical and Electronics Eng, Imperial College, London, United Kingdom

    Erol Gelenbe

  2. Imperial College, London, United Kingdom

    Ricardo Lent

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© 2013 Springer International Publishing Switzerland

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Oklander, B., Gelenbe, E. (2013). Optimal Behaviour of Smart Wireless Users. In: Gelenbe, E., Lent, R. (eds) Information Sciences and Systems 2013. Lecture Notes in Electrical Engineering, vol 264. Springer, Cham. https://doi.org/10.1007/978-3-319-01604-7_9

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  • DOI: https://doi.org/10.1007/978-3-319-01604-7_9

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-01603-0

  • Online ISBN: 978-3-319-01604-7

  • eBook Packages: Computer ScienceComputer Science (R0)

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