T. Korakis, M. Zink, and M. Ott (Eds.): TridentCom 2012, LNICST 44, pp. 417–418, 2012. © Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2012 Testing of LTE Configurations and Applications * Francisco Javier Rivas 1 , Almudena Diaz Zayas 2 , and Pedro Merino Gomez 2 1 AT4 Wireless, Systems Division, Malaga, Spain fjrivas@at4wireless.com 2 Dpto. de Lenguajes y Ciencias de la Computación, University of Malaga, Spain {almudiaz,pedro}@lcc.uma.es Abstract. This paper introduces an experimental testbed developed at the University of Malaga to analyze the behavior of mobile applications and services over LTE (Long Term Evolution) networks. The novelty of the testbed is the ability to correlate the impact of radio propagation issues on LTE configurations and applications protocols and cross tuning LTE parameters and IP protocols from the point of view of the quality perceived by end users. In this work we focus on the evaluation of VoIP services over LTE networks. Keywords: Testbed, LTE, mobile application and services, performance. 1 Introduction LTE have proven to be the primary choice for network operators to provide high rate data services with an evolving path to 4G, which will be provided by LTE Advanced. As LTE is an All-IP data centered technology, there is no support for circuit switched voice services. However, LTE is expected to provide voice services over IP and IMS (IP Multimedia Subsystem), as intended by the VoLTE (Voice over LTE) initiative. According to network operators, their customers are used to a high voice quality, and any migration path to LTE should not compromise the provided quality of service. Voice is still the core business for many operators, and obtaining accurate knowledge on the trade-offs involved in resource management and QoS over LTE will be critical for their success. With the aim of generating reference results, we suggest a novel approach that will hopefully help key market players in making decisions. Further details can be found in [1]. 2 Testbed Architecture In order to meet the target requirements, we suggest a test architecture based on high-end network emulation, open VoIP applications and standard voice quality estimation methods. * This work has been funded by Spanish projects TIN 2008-05932 and WITLE2 IDI-20090382, by the Andalusian project P07-TIC3131 and ERDF from the European Commission.