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ITS 2010 - Extended presentation slides Presentation Transcript

  • 1. A First Glance Comparison of Next and New Generation Network Approaches Antônio M. Alberti (INATEL) Tania R. Tronco (CPqD) Christian E. Rothenberg (CPqD & Unicamp) ITS 2010
  • 2. Motivation
    • Current Scenario (1/3)
      • The Internet became a vital part of today economy, society and institutions infrastructure.
      • However, requirements for the Internet have changed considerably since its conception .
      • Despite its huge success, Internet lacks on :
        • Convergent multimedia experience for their users;
        • Improved support for mobility and unfettered service access;
        • Improved support for security, privacy, QoS;
        • Improved network attachment and service control.
    A First Glance Comparison of NxGN & NwGN
  • 3. Motivation
    • Current Scenario (2/3)
      • Unsatisfied with such limitations, telecommunication operators standardized Next Generation Networks (NGN or NxGN) . E.g.:
        • IMS ( IP Multimedia Subsystem) from 3GPP.
        • NGN-GSI ( Next Generation Networks Global Standards Initiative) from ITU-T.
      • Despite the promises behind SIP/UDP/TCP/IP convergent networks, many researches started to ask if they are ready to support:
        • A multimedia global information infrastructure ?
        • The tremendous increasing of new applications traffic?
        • The drastically increasing in the number of nodes/networks/applications?
        • New 3D and immersive applications?
        • Rich e-media and content distribution?
    A First Glance Comparison of NxGN & NwGN
  • 4. Motivation
    • Current Scenario (3/3)
      • The Internet and NGN limitations and uncertainties motivated what is being called Future Internet Design or New Generation Network (NwGN).
      • Many research initiatives started to reinvent or rethink Internet, so it can fully assume the role we are assigning to it . E.g.:
        • Japanese project Akari ;
        • European Future Internet Assembly initiatives ;
        • U.S. National Science Foundation Future Internet Design (FIND).
      • This paper provides a first glance comparison between key aspects of NxGN and NwGN proposals.
    A First Glance Comparison of NxGN & NwGN
  • 5. Next Generation Networks
    • At the heart of the NGN, sits 3GPP´s original IMS , which was embraced by ETSI and ITU-T as the common control architecture.
    A First Glance Comparison of NxGN & NwGN
  • 6. Next Generation Networks
    • ITU-T NGN-GSI architecture was standardized in Recommendation Y.2012, “Functional Requirements and architecture of the NGN”.
    A First Glance Comparison of NxGN & NwGN NGN – ITU-T Standard. Source: Y.2012.
  • 7. Next Generation Networks
    • Main features of NGN-GSI (1/3):
      • Decouples transport from services and applications .
      • Application gateways provide third-party applications access to exposed NGN capabilities through the ANI .
      • Uses IP as the main transport protocol (everything over IP).
      • Provides support to a diversity of access and core technologies (IP over everything).
      • Media transference as well as control and management information are controlled directly by the “ Transport Control Functions ” based on information from the “Transport User Profiles.”
    A First Glance Comparison of NxGN & NwGN
  • 8. Next Generation Networks
    • Main features of NGN-GSI (2/3):
      • Provides integrated QoS control , traffic and security management .
      • Admission control involves verifying authorization based on use profiles, SLA (Service Level Agreement) , operator rules, service priority and resource availability in core and access segments.
      • The “ Service Control Functions ” are componentized, i.e., new service control components can be implemented in future releases and deployed to provide new functionality.
      • “ Service Control Functions ” include gateway controllers and SIP proxies (very similar to IMS).
    A First Glance Comparison of NxGN & NwGN
  • 9. Next Generation Networks
    • Main features of NGN-GSI (3/3):
      • SIP message routing creates an overlay over IP routing.
      • Virtually every service depends on SIP proxies and session establishment.
    A First Glance Comparison of NxGN & NwGN
  • 10. New Generation Networks A First Glance Comparison of NxGN & NwGN What about the main features that are common in Future Internet Design approaches?
  • 11. New Generation Networks
    • Main features of NwGN (1/4):
      • Mobility and Ubiquity
        • Refer to anywhere/anytime communications wherever/whenever a person (or an object) is.
      • Capacity, reliability and availability
        • Refer to network features to provide the services required by the users and, security and privacy refer to safety in using the network.
      • Real-virtual world integration
        • Aims at contextualizing real world information to enhance virtual world services and applications.
        • Network Enabled Devices with Internet access form what is being called Internet of Things .
    A First Glance Comparison of NxGN & NwGN
  • 12. New Generation Networks
    • Main features of NwGN (2/4):
      • Generality
        • It is to provide means to use generically network substrate (hardware) resources, such as transport, storage and processing capabilities.
        • This can be implemented by means of virtualization techniques.
    A First Glance Comparison of NxGN & NwGN
  • 13. New Generation Networks
    • Main features of NwGN (3/4):
      • Content/Information-centrism
        • It means the ability to handle content/information itself as a first-class citizen in the architecture.
      • Service-centrism
        • Can be referred as the capability of handling services themselves as addressable entities in the architecture, pushing the principles behind Service-Oriented Architectures (SOA) to be at the core of future inter-networking.
    A First Glance Comparison of NxGN & NwGN
  • 14. New Generation Networks
    • Main features of NwGN (4/4):
      • Autonomic networking
        • It is the so-sought attribute that could minimize human activity in network operation.
        • The idea is to design networks capable to self-manage, self-control, self-optimize, self-configure, self-heal, etc., generically speaking, networks with self-* properties .
    A First Glance Comparison of NxGN & NwGN
  • 15. Comparison A First Glance Comparison of NxGN & NwGN
  • 16. Comparison A First Glance Comparison of NxGN & NwGN
  • 17. Comparison A First Glance Comparison of NxGN & NwGN
  • 18. Conclusion
    • Both developments have different timing scopes.
    • There is a need for steering networking research agendas.
    • Migration, interoperability and co-existence need more investigation.
    • NwGN constitute a never-ending set of promissory solutions for these limitations and others, but currently lacks on integrated proposals.
    • Overarching and pragmatic research steps seem necessary to convey the requirements and incentives of the multiple parties.
    A First Glance Comparison of NxGN & NwGN