Research Article
Measuring the Quality of VoIP Traffic on a WiMAX Testbed
@INPROCEEDINGS{10.1109/TRIDENTCOM.2007.4444719, author={Nicola Scalabrino and Francesco De Pellegrini and Roberto Riggio and Andrea Maestrini and Cristina Costa and Imrich Chlamtac}, title={Measuring the Quality of VoIP Traffic on a WiMAX Testbed}, proceedings={3rd International ICST Conference on Testbeds and Research Infrastructures for the Development of Networks and Communities (TridentCom)}, publisher={IEEE}, proceedings_a={TRIDENTCOM}, year={2008}, month={2}, keywords={}, doi={10.1109/TRIDENTCOM.2007.4444719} }- Nicola Scalabrino
Francesco De Pellegrini
Roberto Riggio
Andrea Maestrini
Cristina Costa
Imrich Chlamtac
Year: 2008
Measuring the Quality of VoIP Traffic on a WiMAX Testbed
TRIDENTCOM
IEEE
DOI: 10.1109/TRIDENTCOM.2007.4444719
Abstract
The large coverage of the IEEE 802.16 standard, widely known as WiMAX, represents a key advantage compared to several first mile solutions proposed so far, while ensuring a rather inexpensive equipment at the subscriber side. The IEEE 802.16 standard, in practice, promises to be a flexible solution especially where cabling is not a viable choice, or as an alternative to customary leased lines. Nevertheless, modern requirements to wireless connectivity include mandatory QoS guarantees for a wide set of real-time applications, and this is the case of the ever growing trend of VoIP calls. To this aim, WiMAX supports natively real-time traffic. In this paper, we report the results of a set of measurements performed on the field on a WiMAX Alvarion testbed, located in Turin, Italy. We fed the system with synthetic VoIP traffic, real-time guaranteed, competing with concurrent best effort traffic. We obtained E-model figures, thus characterizing the operation intervals of the system, depending on the codec source and on the number of calls.
