QoS in SIP-based NGN – state of the art and new requirements |
Both, surveillance of the market and studies of ongoing research and standardisation work show that the evolution from traditional telecommunication networks (such as ISDN) towards NGN (Next Generation Networks) currently takes place. SIP (Session Initiation Protocol) as an IP-based signalling protocol plays a major role in future NGN-based telecommunication networks. Quality of Service (QoS) is one of the most important key features of NGN. This paper presents new requirements to the QoS management in SIP-based NGN. Also the new concept of virtual data pipes is introduced to improve the QoS management mechanism.
Weber F, Fuhrmann W, Trick U, Bleimann U, Ghita BV