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IPDV Draft ietfippmipdv03'txt

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IPDV Draft ietf-ippm-ipdv-03.txt Phil Chimento. Centre for Telematics and Information Technology ... Old discussion of IPDV mean value deleted. New section ... – PowerPoint PPT presentation

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Title: IPDV Draft ietfippmipdv03'txt


1
IPDV Draft ltietf-ippm-ipdv-03.txtgt
  • Phil Chimento
  • Centre for Telematics and Information Technology
  • University of Twente
  • Enschede, The Netherlands

2
Changes in the new draft
  • Discontinuous Sample definition deleted
  • Old discussion of IPDV mean value deleted
  • New section added to try to clarify
  • New section on relationship with other standards
    added
  • Short section on security added

3
Some discussion points
  • Components of Delay (and variation)
  • Access delay
  • Transmission delay
  • Propagation delay
  • Nodal delay
  • Queueing delay
  • What does delay variation really measure ?

4
Some Discussion Points (cont)
  • Pair-wise delay variation
  • vs.
  • Change in delay
  • Note
  • pairwise delay variation is small
  • total variation can be large

5
Some questions
  • Key question
  • What do you want to use IPDV for ?
  • Jitter estimation ?
  • Jitter in the EE sense
  • Jitter in the Comp Sci sense
  • Sizing buffers ?
  • Traffic characterization ?
  • Estimation of queueing delay ?
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