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Cloudified IP Multimedia Subsystem (IMS) for Network Function Virtualization (NFV)-based architectures
Citation key Carella2014
Author Carella, Giuseppe and Corici, Marius and Crosta, Paolo and Comi, Paolo and Bohnert, Thomas Michael and Corici, Andreea Ancuta and Vingarzan, Dragos and Magedanz, Thomas
Title of Book 2014 IEEE Symposium on Computers and Communications (ISCC)
Pages 1–6
Year 2014
ISBN 978-1-4799-4277-0
DOI 10.1109/ISCC.2014.6912647
Volume Workshops
Publisher IEEE
Abstract The maturity reached by virtualisation technology enabled great innovation for efficient applications and services development and delivery, independent of the underlying hardware equipment, especially with the large deployment of off-the-shelf hardware based cloud infrastructures. In order to take advantage of this technology, the existing network functions have to be developed and adapted to the new paradigm. However, traditional telecom services are still implemented on dedicated hardware resulting in high deployment and maintenance costs compared to the other already cloudified services. ETSI Network Functions Virtualisation (NFV) aims to fill this gap by applying to telecom the virtualisation technologies. This paper introduces a set of three software architectures for efficient virtualisation of IP Multimedia Subsystem (IMS) in different operator environments responding to the high level requirements of the ETSI NFV use case for virtualizing operator core network functions. Additionally, a management architecture for simplifying the deployment and runtime orchestration of such a virtual service on top of a cloud infrastructure is presented. Furthermore, one of the IMS software architectures was implemented based on the Fraunhofer FOKUS Open IMS Core, measured and evaluated on top of an OpenStack cloud.
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