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research article

Exploiting the Path Propagation Time Differences in Multipath Transmission with FEC

Kurant, Maciej
May 1, 2011
Ieee Journal On Selected Areas In Communications

We consider a transmission of a delay-sensitive data stream (e. g., a video call) from a single source to a single destination. The reliability of this transmission may suffer from bursty packet losses - the predominant type of failures in today's Internet. An effective and well studied solution to this problem is to protect the data by a Forward Error Correction (FEC) code and send the FEC packets over multiple paths. In this paper, we show that the loss rate of such a classic multipath FEC scheme can often be significantly reduced, while keeping the total transmission rate and delay unchanged. Our key observation is that the propagation times on the available paths often significantly differ, usually by 10-100ms. We propose to exploit these differences by appropriate packet scheduling that we call 'Spread'. We evaluate our solution with a precise, analytical formulation and trace-driven simulations. Our studies show that Spread substantially outperforms the state-of-the-art solutions. It typically achieves two-to five-fold improvement (reduction) in the effective loss rate. Or conversely, keeping the same level of effective loss rate, Spread significantly decreases the observed delays and helps fighting the delay jitter.

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Type
research article
DOI
10.1109/JSAC.2011.110512
Web of Science ID

WOS:000289906700012

Author(s)
Kurant, Maciej
Date Issued

2011-05-01

Published in
Ieee Journal On Selected Areas In Communications
Volume

29

Issue

5

Start page

1021

End page

1031

Subjects

multipath transition

•

fec

•

block delay

•

propagation time

•

loss rate

•

total transmission rate

•

scheduling

•

networks

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
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Available on Infoscience
November 4, 2019
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/162657
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