On the Identifiability of Link Service Curves from End-Host Measurements

  • Amr Rizk
  • Markus Fidler
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5425)


We estimate service curves of network internal links from end-host measurements of probing traffic. Our approach belongs to the field of network tomography, which deals with the fundamental challenge of identifiability in a priori under-determined network equation systems. As opposed to recent methods that estimate sole quantities, such as delay and bandwidth, we characterize links using the more generic concept of service curve that comprises various derived quantities including the ones mentioned above. Key to our solution is the Legendre-Fenchel transform that achieves additivity of link service curves. Our measurement results reveal that the burstiness of cross traffic flows, which has significant impact on the shape of leftover service curves, can be attributed to individual links. Using the network calculus we show fundamental limits of certain tomography approaches regarding the identification of propagation delays as well as regarding the resolution of post-narrow links.


Individual Link Path Measurement Small Packet Bandwidth Estimate Network Tomography 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Amr Rizk
    • 1
  • Markus Fidler
    • 1
  1. 1.Multimedia Communications LabTU DarmstadtGermany

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