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Memorias de investigación
Artículos en revistas:
Dimensioning Method for Conversational Video Applications inWireless Convergent Networks
Año:2008
Áreas de investigación
  • Telemática
Datos
Descripción
New convergent services are becoming possible, thanks to the expansion of IP networks based on the availability of innovative advanced coding formats such as H.264, which reduce network bandwidth requirements providing good video quality, and the rapid growth in the supply of dual-mode WiFi cellular terminals. This paper provides, first, a comprehensive subject overview as several technologies are involved, such as medium access protocol in IEEE802.11, H.264 advanced video coding standards, and conversational application characterization and recommendations. Second, the paper presents a new and simple dimensioning model of conversational video over wireless LAN. WLAN is addressed under the optimal network throughput and the perspective of video quality. The maximum number of simultaneous users resulting from throughput is limited by the collisions taking place in the shared medium with the statistical contention protocol. The video quality is conditioned by the packet loss in the contention protocol. Both approaches are analyzed within the scope of the advanced video codecs used in conversational video over IP, to conclude that conversational video dimensioning based on network throughput is not enough to ensure a satisfactory user experience, and video quality has to be taken also into account. Finally, the proposed model has been applied to a real-office scenario.
Internacional
Si
JCR del ISI
No
Título de la revista
EURASIP journal on wireless communications and networking
ISSN
1687-1472
Factor de impacto JCR
0
Información de impacto
Volumen
2008
DOI
Número de revista
0
Desde la página
1
Hasta la página
14
Mes
ENERO
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Participantes
  • Autor: Alfonso Fernandez-Duran (Alcatel-Lucent Spain)
  • Autor: Raquel Perez Leal (UPM)
  • Autor: Jose Ignacio Alonso Montes (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Redes y Servicios de Telecomunicación e Internet
  • Departamento: Señales, Sistemas y Radiocomunicaciones
  • Departamento: Ingeniería de Sistemas Telemáticos
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