Re: [dtn-interest] Re : Re: Question

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Hi Emmanuel,
 This looks great to me, thanks for this pointer. Only one scenario comes
to mind, if it so happens that the expected bundle loss rate, even if for
brief periods, is underestimated. Such scenarios could perhaps be
relevant in space as intense disturbances for brief period is more likely
than a steady noise, and with Tetrys, it would be inefficient to have the
expected bundle loss rate set at its peak.
 I am tending to think while Tetrys could be a default scheme running in
the DTN, DSN, there is needed a scheme that can put out fires
occasionally?
Sitaraman
>
> Hi Sitaraman
>
>> Thanks much for this pointer, it will help me learn this aspect.
>> In general a question remains that i have, for the group as  whole.
>> A lot seems to have already been done  and literature and code
>> available
>> in FEC and Erasure Codes as has been made available from  the
>> discussion
>> on this group  Do these complement or can they replace loss (chunks
>> of
>> data compeletely lost so that there is not anything to decode from)
>> handling mechansims?
>
> Concerning this point, you'll find a study that uses such scheme to
> rebuild lost chunks in "Robust streaming in delay tolerant networks":
> see http://oatao.univ-toulouse.fr/4111/
> The erasure coding scheme is a specific elastic-window encoding scheme
> named Tetrys: see http://websites.isae.fr/tetrys/
>
> Emmanuel
>
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