Title :
Adaptive Rate Control for Aggregated VoIP Traffic
Author :
Sabrina, Fariza ; Valin, Jean-Marc
Author_Institution :
CSIRO ICT Centre, Sydney, NSW
Abstract :
This paper presents a novel mechanism for dynamically adapting the quality of congestion controlled voice over IP (VoIP) applications on the Internet in real time. The system uses our proposed variable bit rate speech codec called Speex, which can dynamically adjust the encoding bit rate (and hence the speech quality) based on both the feedback information about the network congestion and the instantaneous speech properties. Our extensive NS2 simulation results prove that the proposed system indeed provides highest quality speech while maximising the bandwidth utilisation and reducing the network congestion.
Keywords :
Internet telephony; telecommunication congestion control; telecommunication traffic; Internet; Speex; adaptive rate control; aggregated VoIP traffic; variable bit rate speech codec; Adaptive control; Bandwidth; Bit rate; Encoding; Feedback; Internet telephony; Programmable control; Protocols; Resource management; Speech codecs;
Conference_Titel :
Global Telecommunications Conference, 2008. IEEE GLOBECOM 2008. IEEE
Conference_Location :
New Orleans, LO
Print_ISBN :
978-1-4244-2324-8
DOI :
10.1109/GLOCOM.2008.ECP.275