… states of its subsystems (basic events); iii) Continuous-Time Markov Chains (CTMCs) to
model single subsystems. Furthermore, we propose an availability evaluation of the virtualized …

… systems, such as IP Multimedia Subsystem (IMS), where … in this work we propose an
availability assessment of a vIMS … satisfying an high availability condition (availability evaluation), …

… Multimedia Subsystem (IMS) infrastructure, a crucial player within next generation
telecommunication networks, aka 5G. More precisely, we offer an availability evaluation … at …

… , from an availability viewpoint, an IP Multimedia Subsystem (… Firstly, we model the availability
of cIMS by employing both … service satisfying a desired availability constraint, whose results …

… in charge of providing advanced multimedia services, can … work, is characterized in terms
of availability. More specifically, … ), we propose an availability assessment of the whole system …

… smooth and continuous multimedia presentations. PET-ASMAC is simulated in several
network scenarios to evaluate its effectiveness. The subsystem considers presentations from a …

… CONCLUSIONS In this work we introduced a tool useful to manage the availability of service
chains, where the example of virtualized IP Multimedia Subsystem (vIMS) has been tackled. …

… IMS performance evaluation in the presence of failures. Then, in ‘Availability evaluation of
… to compute IMS system availability and meet availability requirements while minimizing the …

… A well known chain-like framework is the IP Multimedia Subsystem (IMS), a key infrastructure
of 5G networks, that we characterize both by a performance and an availability perspective. …

… ] and provides a basis for the service availability conceptual model as motivated in [6]. In
order to classify threats to availability and means to achieve availability in a security setting, we …