Institut for Forretningsudvikling og Teknologi

Ramjee Prasad

End-to-End Availability Analysis of IMS-Based Networks: Simplex and Redundant System

Publikation: Bidrag til bog/antologi/rapport/proceedingKonferencebidrag i proceedingsForskningpeer review

  • Chayapol Kamyod, Danmark
  • Rasmus Hjorth Nielsen, Danmark
  • Neeli R. Prasad, Danmark
  • Ramjee Prasad
Various methods and models have recently been proposed and applied for evaluating IP Multimedia Subsystem (IMS) in terms of reliability, availability and performance. End-to-end availability is one of the key factors that can improve the quality of service (QoS) and increase the reliability of Next Generation Networks (NGNs). In this paper, an end-to-end availability model is proposed and evaluated using a combination of Reliability Block Diagrams (RBD) and a proposed five-state Markov model. The overall availability for intra- and inter domain communication in IMS is analyzed, and the state-of-the-art models are compared with the proposed novel Markov-based reliability modeling for both simplex and redundant systems. The proposed model is proved to efficiently represent the system behaviors. The effect of the end-to-end availability model when applying redundancy in the IMS core system is investigated and numerical results are included.
TitelWireless Communications and Networking Conference (WCNC), 2013 IEEE
Antal sider6
Udgivelsesår7 apr. 2013
Sider1103 - 1108
ISBN (trykt)978-1-4673-5938-2
ISBN (Elektronisk)978-1-4673-5937-5
StatusUdgivet - 7 apr. 2013
Eksternt udgivetJa
Begivenhed2013 IEEE Wireless Communications and Networking Conference (WCNC) - Shanghai, Kina
Varighed: 7 apr. 201310 apr. 2013


Konference2013 IEEE Wireless Communications and Networking Conference (WCNC)
SerietitelI E E E Wireless Communications and Networking Conference. Proceedings

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