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

"Prof. Diego Dujovne" <diego.dujovne@mail.udp.cl> Thu, 03 March 2016 19:25 UTC

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Date: Thu, 03 Mar 2016 16:25:31 -0300
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From: "Prof. Diego Dujovne" <diego.dujovne@mail.udp.cl>
To: "6tisch@ietf.org" <6tisch@ietf.org>
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Subject: [6tisch] 6P and Sf0 issue: Statistics for SFs and Relocation
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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

Académico Escuela de Ingeniería en Informática y Telecomunicaciones
Facultad de Ingeniería UDP
(56 2) 676 8125