naa a22 4500 510794343 CHVBK 20180411083331.0 cr unu---uuuuu 180411e20130301xx s 000 0 eng 10.1007/s11277-012-0566-x doi (NATIONALLICENCE)springer-10.1007/s11277-012-0566-x Speech and Video Telephony Quality Characterization and Prediction of Live Contemporary Mobile Communication Networks [Elektronische Daten] [Charalampos Pitas, Athanasios Panagopoulos, Philip Constantinou] Quality of Service (QoS) characterization and prediction is of utmost importance in contemporary operating cellular communications networks. Measurements data of speech and video telephony have been collected using modern experimental equipment. More specifically, key performance indicators of radio, speech and video quality are evoked. The objective of our study is to critically investigate the performance of speech and video telephony at live cellular networks correlating significant QoS parameters from radio and the service side. Simple non-linear regression models are also proposed for speech and video quality prediction. Finally, the paper represents the splendid positive influences of the continuous performance evaluation for the optimization of the mobile networks. There are also briefly given guidelines for mobile networks benchmarking. Springer Science+Business Media, LLC., 2012 Cellular radio networks nationallicence Radio coverage nationallicence Speech quality nationallicence Video quality nationallicence QoS prediction nationallicence Optimization nationallicence Benchmarking nationallicence Pitas Charalampos Mobile Radiocommunications Laboratory, Division of Information Transmission Systems and Materials Technology, School of Electrical and Computer Engineering, National Technical University of Athens, 8, Iroon Polytechniou Str., Zografou, 15773, Athens, Greece aut Panagopoulos Athanasios Mobile Radiocommunications Laboratory, Division of Information Transmission Systems and Materials Technology, School of Electrical and Computer Engineering, National Technical University of Athens, 8, Iroon Polytechniou Str., Zografou, 15773, Athens, Greece aut Constantinou Philip Mobile Radiocommunications Laboratory, Division of Information Transmission Systems and Materials Technology, School of Electrical and Computer Engineering, National Technical University of Athens, 8, Iroon Polytechniou Str., Zografou, 15773, Athens, Greece aut Wireless Personal Communications Springer US; http://www.springer-ny.com 69/1(2013-03-01), 153-174 0929-6212 69:1<153 2013 69 11277 https://doi.org/10.1007/s11277-012-0566-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0566-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pitas Charalampos Mobile Radiocommunications Laboratory, Division of Information Transmission Systems and Materials Technology, School of Electrical and Computer Engineering, National Technical University of Athens, 8, Iroon Polytechniou Str., Zografou, 15773, Athens, Greece aut NATIONALLICENCE 700 1- Panagopoulos Athanasios Mobile Radiocommunications Laboratory, Division of Information Transmission Systems and Materials Technology, School of Electrical and Computer Engineering, National Technical University of Athens, 8, Iroon Polytechniou Str., Zografou, 15773, Athens, Greece aut NATIONALLICENCE 700 1- Constantinou Philip Mobile Radiocommunications Laboratory, Division of Information Transmission Systems and Materials Technology, School of Electrical and Computer Engineering, National Technical University of Athens, 8, Iroon Polytechniou Str., Zografou, 15773, Athens, Greece aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 69/1(2013-03-01), 153-174 0929-6212 69:1<153 2013 69 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer