Re: [6tisch] 6P and Sf0 issue: Statistics for SFs and Relocation

"Prof. Diego Dujovne" <diego.dujovne@mail.udp.cl> Thu, 10 March 2016 23:15 UTC

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Date: Thu, 10 Mar 2016 20:15:30 -0300
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From: "Prof. Diego Dujovne" <diego.dujovne@mail.udp.cl>
To: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
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Subject: Re: [6tisch] 6P and Sf0 issue: Statistics for SFs and Relocation
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Pascal,
           Agreed. Then we should add a
new SHOULD item at the end of the

"4.2.  Requirements for an SF"

section on the 6TiSCH Operation Sublayer (6top) draft
to include statistics.

Regards,

                  Diego

2016-03-04 8:21 GMT-03:00 Pascal Thubert (pthubert) <pthubert@cisco.com>om>:

> I’d support that, Diego
>
>
>
> If the visible operation of the device depends on it and that influences
> the interoperation, it is good to document a base way of doing things.
>
>
>
> Cheers,
>
>
>
> Pascal
>
>
>
> *From:* 6tisch [mailto:6tisch-bounces@ietf.org] *On Behalf Of *Prof.
> Diego Dujovne
> *Sent:* jeudi 3 mars 2016 20:26
> *To:* 6tisch@ietf.org
> *Subject:* [6tisch] 6P and Sf0 issue: Statistics for SFs and Relocation
>
>
>
> Dear all,
>
>            Given the requirements to build SFs exposed
>
> in the 6tisch sublayer draft, there is no specification
>
> on how to obtain the statistics and calculate and build
> the metrics used to decide when to add/delete/relocate
>
> cells. The draft asks only for the set of rules.
>
>           SF0 defines an algorithm using specific values
>
> as thresholds and rules for adding/removing cells and
> uses PDR and a simple decision rule to decide which
> cell to relocate.  However, this may not be the case
> for the other (possibly more complex) SFs, where
> metrics based on statistics could be included.
>
>            Shall we include a section on the description
>
> of how to calculate the specific statistics used on each
>
> SF, or just leave this out of scope to the implementer?
>
> My point of view is that statistics should be specified
>
> in order to be able to interoperate between different
>
> implementations of the same SF.
>
>             What do you think?
>
>             Thank you,
>
>                                   Diego Dujovne
>
>
>
>
> --
>
> DIEGO DUJOVNE
> Académico Escuela de Ingeniería en Informática y Telecomunicaciones
> Facultad de Ingeniería UDP
> www.ingenieria.udp.cl
> (56 2) 676 8125
>



-- 
DIEGO DUJOVNE
Académico Escuela de Ingeniería en Informática y Telecomunicaciones
Facultad de Ingeniería UDP
www.ingenieria.udp.cl
(56 2) 676 8125