Management of Speech and Video Telephony Quality in Heterogeneous Wireless Networks

  • Błażej Lewcio

Part of the T-Labs Series in Telecommunication Services book series (TLABS)

Table of contents

  1. Front Matter
    Pages i-x
  2. Błażej Lewcio
    Pages 1-6
  3. Błażej Lewcio
    Pages 7-20
  4. Błażej Lewcio
    Pages 21-40
  5. Błażej Lewcio
    Pages 41-79
  6. Błażej Lewcio
    Pages 81-121
  7. Błażej Lewcio
    Pages 123-128
  8. Back Matter
    Pages 129-153

About this book


This book shows how networking research and quality engineering can be combined to successfully manage the transmission quality when speech and video telephony is delivered in heterogeneous wireless networks. Nomadic use of services requires intelligent management of ongoing transmission, and to make the best of available resources many fundamental trade-offs must be considered. Network coverage versus throughput and reliability of a connection is one key aspect, efficiency versus robustness of signal compression is another. However, to successfully manage services, user-perceived Quality of Experience (QoE) in heterogeneous networks must be known, and the perception of quality changes must be understood.  These issues are addressed in this book, in particular focusing on the perception of quality changes due to switching between diverse networks, speech and video codecs, and encoding bit rates during active calls.


Codec Heterogeneous Wireless Networks Network Coverage Nomadic Users Quality of Experience QoE Signal Compression Speech Telephony Video Telephony

Authors and affiliations

  • Błażej Lewcio
    • 1
  1. 1.Quality and Usability Lab Telekom Innovation Laboratories, TU BerlinBerlinGermany

Bibliographic information

  • DOI
  • Copyright Information Springer International Publishing Switzerland 2014
  • Publisher Name Springer, Cham
  • eBook Packages Engineering
  • Print ISBN 978-3-319-02101-0
  • Online ISBN 978-3-319-02102-7
  • Series Print ISSN 2192-2810
  • Series Online ISSN 2192-2829
  • Buy this book on publisher's site
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