… 4 AVAILABILITY MODEL In this work, the system availability analysis is performed by
considering a three-level hierarchical model (Trivedi et al. 2006) that combines various formalisms. …

… -based version of IP Multimedia Subsystem (IMS) … availability evaluation of a containerized
IMS (cIMS) deployment through i) Reliability Block Diagram (RBD) formalism useful to model …

… Two main contributions are offered: first, we model vIMS by exploiting two … an availability
analysis aimed at identifying the optimal redundant configuration satisfying the high availability …

… , 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 …

… rate requirement of a multimedia object, the presentation can … multimedia object, occasionally
require higher data transfer rate than the available bandwidth, then the network subsystem …

… Yet based on the automated generation of availability mod… espouses the availability
model generation approach adopted … to cope with the availability of softwarized architectures …

… availability of system resources, which requires end-to-end monitoring and signaling of resource
availability … architecture for real-time resource availability monitoring and signaling. The …

… availability are accessibility and exclusivity. This paper presents and discusses a conceptual
model for service availability … service types and demonstrates how the model can be used to …

… Multimedia Subsystem (IMS), a key infrastructure of 5G networks, that we characterize both
by a performance and an availability … modeling each softIMS node as an M/G/c system; ii) an …

… However, differently from the previous work, here we adopt a double-layer availability
model combining the expressive power of RBD, and the concise modeling offered by SRN. …