DocumentCode :
1500405
Title :
Scalable voice over internet protocol service-level agreement guarantees in converged transmission control protocol/ internet protocol networks
Author :
Yang, Qingxiong ; Pitts, J.M.
Author_Institution :
Electr. & Electron. Eng. Dept., Imperial Coll. London, London, UK
Volume :
4
Issue :
8
fYear :
2010
Firstpage :
1026
Lastpage :
1035
Abstract :
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.
Keywords :
IP networks; Internet telephony; quality of service; transport protocols; IP networks; Internet protocol networks; QoS; VoIP; international telecommunication; quality of service; scalable voice over Internet protocol service-level agreement; transmission control protocol;
fLanguage :
English
Journal_Title :
Communications, IET
Publisher :
iet
ISSN :
1751-8628
Type :
jour
DOI :
10.1049/iet-com.2009.0491
Filename :
5470335
Link To Document :
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