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Optimal Video Delivery in Mobile Networks Using a Cache-Accelerated Multi Area eMBMS Architecture

  • Ioannis M. Stephanakis
  • Ioannis P. Chochliouros
  • George L. Lymperopoulos
  • Kostas Berberidis
Conference paper
Part of the IFIP Advances in Information and Communication Technology book series (IFIPAICT, volume 437)

Abstract

Long-Term Evolution (LTE) evolved into enhanced Multimedia Broadcast/Multicast Service (eMBMS) that features improved perfomance, higher and more flexible LTE bit rates, Single Frequency Network (SFN) operations and carrier configuration flexibility. Multiple eMBMS service areas allow for efficient spectrum utilization in the context of mobile Content-Delivery-Networks (CDNs) as well as for delivering broadcast and push media over modern broadband networks. This paper intends to highlight novel service architectures for efficient content delivery. Content caching is a widely used technique in the networking industry that brings content closer to end-users improving, thus, servive performance and latency. Next generation wireless networks use edge located cache as well as core located cache in order to reduce traffic between the gateway and the internet and make the response of mobile network faster. This is referred to as hierarchical/distributed caching. Dimensioning of individual scenario-based traffic models for health care, museum virtual tours and interactive educational use cases in the context of the LiveCity European Research Project is attempted in this work. ON/OFF source models featuring state dependent active and inactive periods are used in order to describe multi-threaded resource transmissions. A group of chain ON/OFF models holds the parameters of the basic services and defines cache requirements. An architecture that associates distributed cache deployed at eMBMS Gateways per service area is proposed in order to reduce backhaul traffic. A simple algorithm that determines the optimal cache size in a mixture of chain ON/OFF modeled services is presented.

Keywords

LTE Evolved Multimedia Broadcast/Multicast Service (eMBMS) Single Frequency Network transmission DVB-NGS cache optimization ON/OFF Chain Models traffic modeling 

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Copyright information

© IFIP International Federation for Information Processing 2014

Authors and Affiliations

  • Ioannis M. Stephanakis
    • 1
  • Ioannis P. Chochliouros
    • 2
  • George L. Lymperopoulos
    • 3
  • Kostas Berberidis
    • 4
  1. 1.Hellenic Telecommunication Organization S.A. (OTE)AthensGreece
  2. 2.Research Programs Section, Hellenic Telecommunication Organization S.A. (OTE)AthensGreece
  3. 3.Head of Network Evolution Dept., Fixed & MobileCOSMOTE Mobile Telecommunications S.A.MaroussiGreece
  4. 4.Head of Signal Processing and Communications Lab., Dept. of Com. Engineering & InformaticsUniversity of PatrasPatrasGreece

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