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Improvement of VoIP QoS parameters in comparison to IPTV requirements in Next Generation Broadband Ethernet network

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4 Author(s)
Sheikhattar, M.R. ; Iran Telecommunication Research Center Broadband Pilot Lab ; Yeganeh, H. ; Mirzabaghi, M. ; Bahmani, M.

Network infrastructure today has become highly evolved and is required to support converged IP applications such as the triple play of video, voice and data. All of these applications have numerous means of implementation and myriad protocols. More emphasis on quality is being placed on communications equipment manufacturers and network providers alike to provide high quality user experience for applications such as IPTV and VoIP. One of the solutions is the Metro Ethernet network. In this paper, we present the results of the first phase of the Iran Telecommunication Research Center Broadband Ethernet Simulation (ITRC-BES) project which is defined by Iran Telecommunication Research Center Next Generation Network (ITRC-NGN) Group based on the Data Communication of IRAN Organization Network (DCI) requirements. We analyze performance parameters of both VoIP and IPTV traffic flows in a selected hybrid topology with OPNET. This topology contains RPR layer 2 rings called regions which are connected with each other by the IP/MPLS layer 3 routers. VPLS is configured in the network among interactive regions and both IPTV and VoIP traffic are assigned to the appropriate LSPs. Results show that QoS and service differentiation configuration in such a network are necessary topics. In addition, although, QoS mechanism can improve the quality of VoIP, the IPTV flows quality is significantly decreased by the adding more than 300 IPTV users to the network.

Published in:

Networks, 2008. ICON 2008. 16th IEEE International Conference on

Date of Conference:

12-14 Dec. 2008