Fajardo Portillo, Jose Oscar

Personal information

Fajardo Portillo, Jose Oscar

Address: Alda. de Urquijo s/n. C.P.: 48013. Bilbao
Email: joseoscar.fajardo@ehu.es
Telephone: +34 94 601 7361


Academic degrees

University Degree

Career: Engineering in Telecommunications
Intensificación: Telematics
Center: University of The Basque Country
Date of achievement: 2003


Program title: Tecnologías de la Información y Comunicaciones en Redes Móviles
DEA date of achievement: 2005
Thesis title: Adaptación de los mecanismos de provisión de calidad de servicio a las preferencias de los usuarios (Adaptation of QoS provisioning mechanisms to user requirements)
Date of achievement: (In progress)

Conference Papers

Performance-driven Evaluation for Deploying IMS-based Interoperability Scenarios [accepted]

Jose Oscar Fajardo, Fidel Liberal, Fudong Li, Nathan Clarke, Is-Haka Mkwawa, Lingfen Sun
IEEE ICC 2014 – NGN (Next-Generation Networking Symposium). Sydney, Australia. 10-14 June

This paper deals with the performance evaluation of deploying an IMS-based media plane interoperability framework. The 3GPP standards describe two possible operating modes based on either a reactive or a proactive approach. We show that both approaches entail some advantages and drawbacks in terms of signaling overhead and call setup times. In order to use experimental individual delay contributions, a prototype implementation of the required elements was carried out for which transmission and processing times and the average ratio of incompatible calls where evaluated. Additionally, the evaluation focuses on the impact of deploying the interoperability solutions over current UMTS and LTE radio access networks.