Abstract
This paper proposes the architecture of end-to-end QoS for VoIP call processing in the MPLS (Multiprotocol Label Switching)-based NGN (Next Generation Network). End-to-end QoS for VoIP call processing in the MPLS network is guaranteed through the router and VoIP server. However, QoS is not presently supported in the VoIP server. In order to resolve this problem, this paper proposes QoS resource management and differentiated call processing technology by extending VoIP signaling protocol SIP (Session Initiation Protocol). QoS resource management coordinates service priority in call processing, while differentiated call processing technology processes calls, applying the service priority negotiated in the SIP server. Service priority is set up through the flow label field of the IPv6 header, considering future MPLS label mapping. A performance analysis shows that there is a considerable difference in end-to-end call setup delay depending on service priority, in setting up SIP calls in the MPLS network. We will be able to ensure excellent performance by applying this result to call setups that requires real-time or emergency response in the future NGN environment.
This work is supported by the Korean Science and Engineering Foundation under grant number R01-2001-000-00349-0(2003)
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References
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Kim, C., Shin, S., Ha, S., Yoon, K., Han, S. (2004). Architecture of End-to-End QoS for VoIP Call Processing in the MPLS Network. In: Solé-Pareta, J., et al. Quality of Service in the Emerging Networking Panorama. WQoSR QofIS ICQT 2004 2004 2004. Lecture Notes in Computer Science, vol 3266. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-30193-6_5
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DOI: https://doi.org/10.1007/978-3-540-30193-6_5
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