Performance tradeoff between mobility and voice quality among different VoIP deployment strategies
Conference proceedings article
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Publication Details
Author list: Lavangnananda K., Angsuchotmetee C., Yongsakun K., Panyato P., Sawasdimongkol P.
Publisher: Hindawi
Publication year: 2011
Start page: 547
End page: 551
Number of pages: 5
ISBN: 9781612844855
ISSN: 0146-9428
eISSN: 1745-4557
Languages: English-Great Britain (EN-GB)
Abstract
Voice over Internet Protocol (VoIP) is a new paradigm of telephony service. Many organizations nowadays are interested in adopting VoIP. Nevertheless, different deployment strategies exist. This study describes all current possible VoIP deployments (No Mobility, Limited Area Mobility and Full Mobility), their properties and characteristics. It attempts to systematically compare these possible deployments with respect to mobility level and end-to-end voice quality. This was done by means of the popular measures of voice quality, packet discard, packet loss and Mean Opinion Score (MOS). Performance tradeoffs between both aspects are also discussed. Results reveal that Quality of Service (QoS) is satisfactory in No Mobility and Limited Area Mobility deployments. However, this is not the case for Full Mobility deployment using UMTS. The study also pays particular attention on the utilization of the two popular CODEC, G.711 and G.729 among these deployments. Significant findings are discussed and directions for future works are also suggested. ฉ 2011 IEEE.
Keywords
Mean Opinion Score (MOS), Packet Discard, Quality of Service (QoS), Voice over Internet Protocol (VoIP)
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