End-to-end QoS in IMS enabled next generation networks

Summary form only given. It is widely acknowledged that the convergence is the way to evolve the existing wireline and wireless networks towards next generation networks. IP multimedia subsystem (IMS) stemming from the Third Generation Partnership Project (3GPP) is presently deemed as being instrumental to support wireline and wireless convergence (also referred to as fixed mobile convergence (FMC)). However, even though the notion of IMS is access agnostic, lots of open issues still need to be investigated for integrating various access technologies into IMS framework, one of significant concern is the framework and mechanisms to support end-to-end QoS in the IMS and NGNs. This talk will discuss the challenges and requirements of resource and admission control for supporting end-to-end QoS in the converged NGNs. It will address the architecture and key mechanisms to perform policy control, call admission control and resource management etc. in IMS enabled NGNs over various wireless and wireline access networks, e.g. UMTS/CDMA, DSL and cable network etc. Finally the related IMS/NGN standard activities in ITU-T, TISPAN and 3GPP will be introduced.