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A Novel Mobility-Aware Playout Algorithm for VoIP Services

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Abstract

The latest explosive growth in mobile networks has resulted in an increasing interest in optimisation techniques for mobile services. Resent advances in mobile wireless networks incorporate link-layer intelligence in order to enhance the performance of network and application layers. The Media Independent Handover (MIH) standard provides a framework that can make such link-layer intelligence available to upper layers. In this paper, a novel MIH-enabled playout algorithm for Voice over Internet Protocol applications is presented that aims to compensate for the degradation of voice quality caused by handovers. To that end, link-layer triggers in conjunction with speech time-scale modification techniques are exploited to mitigate the increase in delay and jitter induced by the handover process. Results of subjective listening tests show typical gains of 0.3 on a 5-point scale of the Mean Opinion Score with respect to existing playout scheduling schemes.

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Authors and Affiliations

  1. Wireless Telecommunications Laboratory, Department of Electrical and Computer Engineering, University of Patras, Patras, Greece

    Asimakis Lykourgiotis & Stavros Kotsopoulos

  2. Division of Computer Science and Informatics, London South Bank University, 103 Borough Road, London, UK

    Tasos Dagiuklas

Authors
  1. Asimakis Lykourgiotis
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  2. Stavros Kotsopoulos
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  3. Tasos Dagiuklas
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Correspondence to Asimakis Lykourgiotis.

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Lykourgiotis, A., Kotsopoulos, S. & Dagiuklas, T. A Novel Mobility-Aware Playout Algorithm for VoIP Services. Wireless Pers Commun 96, 2427–2446 (2017). https://doi.org/10.1007/s11277-017-4305-1

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  • DOI: https://doi.org/10.1007/s11277-017-4305-1

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