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A comparative study of forward error correction and frame accumulation for VoIP over congested networks

Praestholm, Steffen; Schwefel, Hans-Peter and Andersen, Sören Vang LU (2007) 20th International Teletraffic Congress (ITC 20), 2007 In Managing Traffic Performance in Converged Networks 4516. p.374-385
Abstract
We compare Forward Error Correction (FEC) and frame AC-Cumulation (ACC) to see which of the two schemes most effectively reduce frame loss rate for an aggregate of VoIP flows, sharing a network bottleneck. We model this bottleneck by a M/M/1/K queue and we analytically show that given certain assumptions, FEC is the best choice for low initial load at the bottleneck. Then, as the initial load increases, a crossing point is reached after which applying ACC is the better choice. We study this crossing point through numerical examples. Furthermore, we present numerical examples indicating that ACC is better than FEC in bandwidth limited network scenarios, while performance is more equal for packet processing limited scenarios, with FEC being... (More)
We compare Forward Error Correction (FEC) and frame AC-Cumulation (ACC) to see which of the two schemes most effectively reduce frame loss rate for an aggregate of VoIP flows, sharing a network bottleneck. We model this bottleneck by a M/M/1/K queue and we analytically show that given certain assumptions, FEC is the best choice for low initial load at the bottleneck. Then, as the initial load increases, a crossing point is reached after which applying ACC is the better choice. We study this crossing point through numerical examples. Furthermore, we present numerical examples indicating that ACC is better than FEC in bandwidth limited network scenarios, while performance is more equal for packet processing limited scenarios, with FEC being the slightly better choice. Finally, we introduce more general queue models, e.g. the MMPP/M/1/K queue, to model traffic scenarios like the aggregate of ON/OFF VoIP traffic. (Less)
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author
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
Managing Traffic Performance in Converged Networks
volume
4516
pages
374 - 385
publisher
Springer
conference name
20th International Teletraffic Congress (ITC 20), 2007
external identifiers
  • wos:000247853600035
  • scopus:38149042716
ISSN
1611-3349
0302-9743
language
English
LU publication?
no
id
be53a557-d113-45a3-b4b9-58ec6c633878 (old id 4092506)
date added to LUP
2013-10-17 10:56:06
date last changed
2017-02-19 03:29:11
@inproceedings{be53a557-d113-45a3-b4b9-58ec6c633878,
  abstract     = {We compare Forward Error Correction (FEC) and frame AC-Cumulation (ACC) to see which of the two schemes most effectively reduce frame loss rate for an aggregate of VoIP flows, sharing a network bottleneck. We model this bottleneck by a M/M/1/K queue and we analytically show that given certain assumptions, FEC is the best choice for low initial load at the bottleneck. Then, as the initial load increases, a crossing point is reached after which applying ACC is the better choice. We study this crossing point through numerical examples. Furthermore, we present numerical examples indicating that ACC is better than FEC in bandwidth limited network scenarios, while performance is more equal for packet processing limited scenarios, with FEC being the slightly better choice. Finally, we introduce more general queue models, e.g. the MMPP/M/1/K queue, to model traffic scenarios like the aggregate of ON/OFF VoIP traffic.},
  author       = {Praestholm, Steffen and Schwefel, Hans-Peter and Andersen, Sören Vang},
  booktitle    = {Managing Traffic Performance in Converged Networks},
  issn         = {1611-3349},
  language     = {eng},
  pages        = {374--385},
  publisher    = {Springer},
  title        = {A comparative study of forward error correction and frame accumulation for VoIP over congested networks},
  volume       = {4516},
  year         = {2007},
}