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Scalable voice over Internet protocol service-level agreement guarantees in converged transmission control protocol/Internet protocol networks

Scalable voice over Internet protocol service-level agreement guarantees in converged transmission control protocol/Internet protocol networks

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  • Author(s): Q. Yang 1  and  J.M. Pitts 2
    • View affiliations
    • Affiliations: 1: Electrical and Electronic Engineering Department, Imperial College London, London, UK
      2: School of Electronic Engineering and Computer Science, Queen Mary, University of London, London, UK
  • Source: Volume 4, Issue 8, 21 May 2010, p. 1026 – 1035
    DOI:  10.1049/iet-com.2009.0491 , Print ISSN 1751-8628, Online ISSN 1751-8636
© The Institution of Engineering and Technology
Published

Increasing complexity of the recent introduced quality of service (QoS) provisioning tools in packet-switched networks becomes a major obstacle for Internet service providers to practically deploy and manage these mechanisms to guarantee a range of transparent real-time service-level agreements. The authors revisit the existing Internet protocol (IP) QoS approaches and present a cost-effective solution to provide voice over Internet protocol (VoIP) service guarantees in converged IP networks by combining open shortest-path first traffic engineering with new insights for the configuration of standard active queue management random early detection mechanism. Extensive simulation studies are carried out, and the service quality is explicitly quantified using international telecommunication union E-model for a range of scenarios representing different types of network uncertainties. The direct representation of VoIP service quality well demonstrate that such a simple, coordinated approach, in keeping with the Internet paradigm, can achieve increased load for a given quality level and greater resilience under degraded network conditions.

Inspec keywords: IP networks; transport protocols; quality of service; Internet telephony

Other keywords: scalable voice over Internet protocol service-level agreement; QoS; VoIP; quality of service; Internet protocol networks; international telecommunication; transmission control protocol; IP networks

Subjects: Computer communications; Protocols; Telephony; Protocols; Other computer networks

References

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