Standard
Adaptive VoIP transmission over heterogeneous wired/wireless networks. / Trad, A.
; Ni, Q.; Afifi, H.
Interactive multimedia and next generation networks: Second International Workshop on Multimedia Interactive Protocols and Systems, MIPS 2004, Grenoble, France, November 16-19, 2004. Proceedings. ed. / Vincent Roca; Franck Rousseau. Berlin: Springer Verlag, 2004. p. 25-36 (Lecture Notes in Computer Science; Vol. 3311).
Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
Harvard
Trad, A
, Ni, Q & Afifi, H 2004,
Adaptive VoIP transmission over heterogeneous wired/wireless networks. in V Roca & F Rousseau (eds),
Interactive multimedia and next generation networks: Second International Workshop on Multimedia Interactive Protocols and Systems, MIPS 2004, Grenoble, France, November 16-19, 2004. Proceedings. Lecture Notes in Computer Science, vol. 3311, Springer Verlag, Berlin, pp. 25-36, 2nd International Workshop on Multimedia Interactive Protocols and Systems, Grenoble,
16/11/04.
https://doi.org/10.1007/978-3-540-30493-7_3APA
Trad, A.
, Ni, Q., & Afifi, H. (2004).
Adaptive VoIP transmission over heterogeneous wired/wireless networks. In V. Roca, & F. Rousseau (Eds.),
Interactive multimedia and next generation networks: Second International Workshop on Multimedia Interactive Protocols and Systems, MIPS 2004, Grenoble, France, November 16-19, 2004. Proceedings (pp. 25-36). (Lecture Notes in Computer Science; Vol. 3311). Springer Verlag.
https://doi.org/10.1007/978-3-540-30493-7_3Vancouver
Trad A
, Ni Q, Afifi H.
Adaptive VoIP transmission over heterogeneous wired/wireless networks. In Roca V, Rousseau F, editors, Interactive multimedia and next generation networks: Second International Workshop on Multimedia Interactive Protocols and Systems, MIPS 2004, Grenoble, France, November 16-19, 2004. Proceedings. Berlin: Springer Verlag. 2004. p. 25-36. (Lecture Notes in Computer Science). doi: 10.1007/978-3-540-30493-7_3
Author
Trad, A.
; Ni, Q. ; Afifi, H. /
Adaptive VoIP transmission over heterogeneous wired/wireless networks. Interactive multimedia and next generation networks: Second International Workshop on Multimedia Interactive Protocols and Systems, MIPS 2004, Grenoble, France, November 16-19, 2004. Proceedings. editor / Vincent Roca ; Franck Rousseau. Berlin : Springer Verlag, 2004. pp. 25-36 (Lecture Notes in Computer Science).
Bibtex
@inproceedings{af7e8448f7c64fd191e0b26da69b3d0f,
title = "Adaptive VoIP transmission over heterogeneous wired/wireless networks",
abstract = "In this paper, we present an adaptive architecture for the transport of VoIP traffic over heterogeneous wired/wireless Internet environments. This architecture uses a VoIP gateway associated with an 802.11e QoS enhanced access point (QAP) to transcode voice flows before their transmissions over the wireless channel. The instantaneous bit rate is determined by a control mechanism based on the estimation of channel congestion state. Our mechanism dynamically adapts audio codec bit rate using a congestion avoidance technique so as to preserve acceptable levels of quality. A case study presenting the results relative to an adaptive system transmitting at bit rates typical of G.711 PCM (64 kbit/s) and G.726 ADPCM (40, 32, 24 and 16 kbit/s) speech coding standards illustrates the performance of the proposed framework. We perform extensive simulations to compare the performance between our adaptive audio rate control and TFRC mechanism. The results show that the proposed mechanism achieves better voice transmission performance, especially when the number of stations is fairly large.",
author = "A. Trad and Q. Ni and H. Afifi",
year = "2004",
doi = "10.1007/978-3-540-30493-7_3",
language = "English",
isbn = "3-540-23928-6",
series = "Lecture Notes in Computer Science",
publisher = "Springer Verlag",
pages = "25--36",
editor = "Vincent Roca and Franck Rousseau",
booktitle = "Interactive multimedia and next generation networks",
note = "2nd International Workshop on Multimedia Interactive Protocols and Systems ; Conference date: 16-11-2004 Through 19-11-2004",
}
RIS
TY - GEN
T1 - Adaptive VoIP transmission over heterogeneous wired/wireless networks
AU - Trad, A.
AU - Ni, Q.
AU - Afifi, H.
PY - 2004
Y1 - 2004
N2 - In this paper, we present an adaptive architecture for the transport of VoIP traffic over heterogeneous wired/wireless Internet environments. This architecture uses a VoIP gateway associated with an 802.11e QoS enhanced access point (QAP) to transcode voice flows before their transmissions over the wireless channel. The instantaneous bit rate is determined by a control mechanism based on the estimation of channel congestion state. Our mechanism dynamically adapts audio codec bit rate using a congestion avoidance technique so as to preserve acceptable levels of quality. A case study presenting the results relative to an adaptive system transmitting at bit rates typical of G.711 PCM (64 kbit/s) and G.726 ADPCM (40, 32, 24 and 16 kbit/s) speech coding standards illustrates the performance of the proposed framework. We perform extensive simulations to compare the performance between our adaptive audio rate control and TFRC mechanism. The results show that the proposed mechanism achieves better voice transmission performance, especially when the number of stations is fairly large.
AB - In this paper, we present an adaptive architecture for the transport of VoIP traffic over heterogeneous wired/wireless Internet environments. This architecture uses a VoIP gateway associated with an 802.11e QoS enhanced access point (QAP) to transcode voice flows before their transmissions over the wireless channel. The instantaneous bit rate is determined by a control mechanism based on the estimation of channel congestion state. Our mechanism dynamically adapts audio codec bit rate using a congestion avoidance technique so as to preserve acceptable levels of quality. A case study presenting the results relative to an adaptive system transmitting at bit rates typical of G.711 PCM (64 kbit/s) and G.726 ADPCM (40, 32, 24 and 16 kbit/s) speech coding standards illustrates the performance of the proposed framework. We perform extensive simulations to compare the performance between our adaptive audio rate control and TFRC mechanism. The results show that the proposed mechanism achieves better voice transmission performance, especially when the number of stations is fairly large.
U2 - 10.1007/978-3-540-30493-7_3
DO - 10.1007/978-3-540-30493-7_3
M3 - Conference contribution/Paper
SN - 3-540-23928-6
T3 - Lecture Notes in Computer Science
SP - 25
EP - 36
BT - Interactive multimedia and next generation networks
A2 - Roca, Vincent
A2 - Rousseau, Franck
PB - Springer Verlag
CY - Berlin
T2 - 2nd International Workshop on Multimedia Interactive Protocols and Systems
Y2 - 16 November 2004 through 19 November 2004
ER -
