Analyses and design of a new integrated mobile SIP proxy to enhance the scalability in mobile network operators


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Abou Haibeh, Lina (2018). Analyses and design of a new integrated mobile SIP proxy to enhance the scalability in mobile network operators. (Mémoire de maîtrise). Université du Québec en Abitibi-Témiscamingue. Repéré dans Depositum à

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The emergence of the two new technologies, namely Software Defined Network (SDN) and
Network Function Virtualization (NFV) have radically changed the development of computer network fun etions and the evolution of mobile network operators (MN Os) infrastructures. The se two technologies bring to MN Os the promises of reducing costs, enhancing network flexibility and scalability to handle the growth in the number of mobile users and the need to extend its coverage to rural areas.
The aim of this thesis 1s to exploit the advantages of the NFV concept to support the implementation of full y integrated solution with an external Session Initial Protocol (SIP) proxy application to enhance the scalability in MN Os. The proposed solution offers a hosted SIP proxy application installed on a virtual machine (VM) environment. The SIP proxy provides full Private Branch Exchange (PBX) and Switch (SW) functionality with Interactive Voice Response (IVR) capabilities. It maximizes the capacity in the existing servers and value-added services (VAS) data centers within the MNOs. The proposed solution enhances the usage of the existing bandwidth by using the unlicensed radio frequency (RF) spectrum bandwidth instead of the licensed RF spectrum to support a larger number of smartphones and data plans.
In the initial experimental testbed, TeleFinity IP PBX, which is an external SIP proxy, 1s deployed on a virtual platform and integrated with the mobile network. The integration 1s realized by establishing a point to point protocol (PPP) SIP trunk connection between TeleFinity IP PBX and the Gateway Mobile Switch Center (GMSC). Severa! Testing scenarios were carried out over a local area network (LAN) and a wide area network (W AN) using different voice codees: G.711 u-law, G. 723, and G. 729 to validate the voice cali quality offered by the proposed solution. The Network analyzer software solutions: 1) Startrinity SIP tester, 2) Commview and 3) Resource Monitor are used to measure severa! Quality of Service (QoS) metrics. These include voice jitter, delay, packet Joss, and MOS. This procedure ensures that the proposed solution can handle voice communications with acceptable quality compared to LTE standards.

Type de document: Thèse ou mémoires (Mémoire de maîtrise)
Directeur de mémoire/thèse: Hakem, Nadir
Mots-clés libres: Network Function Virtualization (NFV); SIP Proxy; Quality of Service (QoS); Scalability; Mobile Network Operators; Virtual machine
Divisions: Génie > Maîtrise en ingénierie
Date de dépôt: 06 avr. 2018 13:48
Dernière modification: 06 avr. 2018 13:48

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