Advanced

On packet loss concealment artifacts and their implications for packet labeling in Voice over IP

Praestholm, S; Jensen, SS; Andersen, Sören Vang LU and Murthi, MN (2004) IEEE International Conference on Multimedia and Expo (ICME) In 2004 IEEE INTERNATIONAL CONFERENCE ON MULTIMEDIA AND EXP (ICME), VOLS 1-3 p.1667-1670
Abstract
In many Voice over IP (VoIP) systems, the end-to-end voice Quality of Service (QoS) is largely dictated by the packet loss rate and the Packet Loss Concealment (PLC) method at the receiver. Typical PLC algorithms are usually based on simple signal extrapolation methods that can produce perceptually annoying artifacts. We present a taxonomy of PLC artifacts that degrade voice quality, and demonstrate how this knowledge can be used to define a PLC-driven labeling of critical voice packets. In particular, we show how the packets whose loss will produce an annoying artifact can be labeled for transmission over a virtual premium channel effected through either a Differentiated Services method, or adaptive Forward Error Correction (FEC) on a... (More)
In many Voice over IP (VoIP) systems, the end-to-end voice Quality of Service (QoS) is largely dictated by the packet loss rate and the Packet Loss Concealment (PLC) method at the receiver. Typical PLC algorithms are usually based on simple signal extrapolation methods that can produce perceptually annoying artifacts. We present a taxonomy of PLC artifacts that degrade voice quality, and demonstrate how this knowledge can be used to define a PLC-driven labeling of critical voice packets. In particular, we show how the packets whose loss will produce an annoying artifact can be labeled for transmission over a virtual premium channel effected through either a Differentiated Services method, or adaptive Forward Error Correction (FEC) on a best-effort ordinary network. With a PLC-driven labeling of critical packets transmitted over a premium channel, the VoIP application can achieve large potential QoS gains over random labeling approaches, and is more robust to packet loss over an ordinary channel. The PLC-driven labeling produces packets in bursts for the premium channel, a fact which may complicate the design of a premium channel. To automate the labeling of packets, we demonstrate the feasibility of a sender-based packet classifier to detect the packets whose loss will produce PLC artifacts. (Less)
Please use this url to cite or link to this publication:
author
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
2004 IEEE INTERNATIONAL CONFERENCE ON MULTIMEDIA AND EXP (ICME), VOLS 1-3
pages
1667 - 1670
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
conference name
IEEE International Conference on Multimedia and Expo (ICME)
external identifiers
  • WOS:000225567800422
  • Scopus:11244283382
DOI
10.1109/ICME.2004.1394572
language
English
LU publication?
no
id
b70930a3-f97c-4f99-a6e1-540adc022058 (old id 4092556)
date added to LUP
2013-10-17 10:44:55
date last changed
2016-10-13 04:48:39
@misc{b70930a3-f97c-4f99-a6e1-540adc022058,
  abstract     = {In many Voice over IP (VoIP) systems, the end-to-end voice Quality of Service (QoS) is largely dictated by the packet loss rate and the Packet Loss Concealment (PLC) method at the receiver. Typical PLC algorithms are usually based on simple signal extrapolation methods that can produce perceptually annoying artifacts. We present a taxonomy of PLC artifacts that degrade voice quality, and demonstrate how this knowledge can be used to define a PLC-driven labeling of critical voice packets. In particular, we show how the packets whose loss will produce an annoying artifact can be labeled for transmission over a virtual premium channel effected through either a Differentiated Services method, or adaptive Forward Error Correction (FEC) on a best-effort ordinary network. With a PLC-driven labeling of critical packets transmitted over a premium channel, the VoIP application can achieve large potential QoS gains over random labeling approaches, and is more robust to packet loss over an ordinary channel. The PLC-driven labeling produces packets in bursts for the premium channel, a fact which may complicate the design of a premium channel. To automate the labeling of packets, we demonstrate the feasibility of a sender-based packet classifier to detect the packets whose loss will produce PLC artifacts.},
  author       = {Praestholm, S and Jensen, SS and Andersen, Sören Vang and Murthi, MN},
  language     = {eng},
  pages        = {1667--1670},
  publisher    = {ARRAY(0x7c4adc0)},
  series       = {2004 IEEE INTERNATIONAL CONFERENCE ON MULTIMEDIA AND EXP (ICME), VOLS 1-3},
  title        = {On packet loss concealment artifacts and their implications for packet labeling in Voice over IP},
  url          = {http://dx.doi.org/10.1109/ICME.2004.1394572},
  year         = {2004},
}