3rd International ICST Conference on Testbeds and Research Infrastructures for the Development of Networks and Communities (TridentCom)

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
Nicola Scalabrino1,*, Francesco De Pellegrini1,*, Roberto Riggio1,*, Andrea Maestrini1,*, Cristina Costa1,*, Imrich Chlamtac1,*
  • 1: CREATE-NET, Via dei Solteri 38, 38100, Trento, Italy
*Contact email: nicola.scalabrino@create-net.org, francesco.pellegrini@create-net.org, roberto.riggio@create-net.org, andrea.maestrini@create-net.org, cristina.costa@create-net.org, imrich.chlamtac@create-net.org

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.