Network Function Virtualization (NFV) has recently attracted telecom operators to migrate
network functionalities from expensive bespoke hardware systems to virtualized IT …

Network Functions Virtualization (NFV) allows service providers to deliver new services to
their customers more quickly by adopting software centric network functions implementation …

IP Multimedia Subsystem (IMS) ia an architectural framework suitable for Fixed Mobile
Convergence (FMC), where users can access any multimedia services ubiquitously from …

The Next Generation Network (NGN) architecture, including elements of the IP Multimedia
Subsystem (IMS) concept, is a proposition of a telecommunication network dedicated to the …

The mission-critical web-based services deploying requires planning of the scalability,
reliability, and performance to ensure the constant availability of these services. Besides …

Network Function Virtualization (NFV) represents a key shift in nowadays network service
provisioning by entailing higher flexibility, elasticity, and programmability of network …

IP multimedia subsystem (IMS) and IMS-based services are increasingly providing
interoperable session control and mobility for next-generation all-IP networks. However …

The IP Multimedia Subsystem is a control overlay network that enables the delivery of
multimedia services to end subscribers. One of the core steps towards the optimization of an …

In this paper, we propose a set of dimensioning rules, which deliver high quality session-
based services over an NGN network based IP/MPLS transport infrastructure. In particular …

Network calculus is a min-plus system theory which facilitates the efficient derivation of
performance bounds for networks of queues. It has successfully been applied to provide end …