Usability Engineering
WCDMA for UMTS: Radio Access for Third Generation Mobile Communications
WCDMA for UMTS: Radio Access for Third Generation Mobile Communications
Handbook of Usability Testing: How to Plan, Design, and Conduct Effective Tests
Handbook of Usability Testing: How to Plan, Design, and Conduct Effective Tests
Design and Analysis of Experiments
Design and Analysis of Experiments
Addressing user expectations in mobile content delivery
Mobile Information Systems - Improving Quality of Service in Mobile Information Systems, Services and Networks
Proceedings of the 6th International Conference on Advances in Mobile Computing and Multimedia
A network management algorithm and protocol for improving QoE in mobile IPTV
Computer Communications
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Quality of Service in mobile telecommunication systems is usually identified by some basic performance metrics such as delay, throughput and jitter. However, the main impact of service quality is on the end user, and as such a detailed study of service performance should involve the end user. In this paper, such an approach is taken where subjective performance evaluation is undertaken for web browsing and video streaming services in Universal Mobile Telecommunication System (UMTS) and a heterogeneous network comprised of UMTS and Wireless LAN (WLAN)Using a real-time network emulation testbed, users rated the perceived quality of the services under different network conditions. The users' ratings are analyzed and the results showed clear trends with very few outliers. The objective and subjective measures also were found to be in line except for one case where a higher layer effect influenced the users' perception.