A Framework for Improved QoS Evaluation and Control in SIP-Based NGN |
Today’s standardised approaches for the control of QoS (Quality of Service) in NGN (Next Generation Networks) come along with a high volume of additional, unscalable traffic for the allocation and reservation of network resources within the IP transport network. This paper describes a new framework for comprehensive QoS control in SIP-based (Session Initiation Protocol) NGN, addressing the shortcomings of standardised NGN QoS provision and thus, leading to a more efficient QoS provision model. Because this framework approach does not rely on traditional IP QoS mechanisms it can be applied to arbitrary combinations of IP transport technologies. In order to save up network resources and, at the same time, provide appropriate service performance to the subscribers multiple factors (such as individual QoS requirements of different media and codecs) are considered to perform scalable end-to-end QoS monitoring, rating, and control.
Weber F, Fuhrmann W, Trick U, Bleimann U, Ghita BV