标题: Mobile-Taiwan experience in voice over IP-worldwide interoperability for microwave access trial
作者: Lin, Y. -B.
Sung, Y. -C.
Rashvand, H. F.
Liu, C. -L.
Liao, Y. -J.
交大名义发表
National Chiao Tung University
公开日期: 11-六月-2010
摘要: Considering voice as a dominant telecommunication service, the performance of Voice over IP (VoIP) plays a critical role in deployment of worldwide interoperability for microwave access (WiMAX) technology providing all-IP network services. To that effect, in this study, the authors investigate the performance of a WiMAX-based VoIP established under the mobile Taiwan (M-Taiwan) field-trial funded program. To achieve the objectives of the trial the measurement results expressed in the form of mean opinion score (MOS), packet loss, packet delay and jitters. For the worst-case scenario, the tests were conducted under a stringent condition of both communicating devices, wirelessly connected to the same WiMAX base station under a heavy background traffic and interference, were experiencing simultaneous handovers during the communication. Upon their analysis, the field measurements confirm an excellent performance when both communicating devices kept stationary and show an acceptable quality for the service when both communicating devices are on the move at a speed of 50 km/h.
URI: http://dx.doi.org/10.1049/iet-com.2009.0131
http://hdl.handle.net/11536/5271
ISSN: 1751-8628
DOI: 10.1049/iet-com.2009.0131
期刊: IET COMMUNICATIONS
Volume: 4
Issue: 9
起始页: 1130
结束页: 1141
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