> On 12 May 2015, at 12:52, Michael Richardson <[email protected]> wrote:
>
> A power and compute-saving thing for the JCE to do would be to have the
> JN provide the JCE with a session-resumption ticket... and for the JCE
> to pass that onto the PCE.
This seems like a great idea for nodes that may often loose connectivity and
would need to re-run the join process. For instance, we work with
energy-harvesting nodes with very small batteries (20 mAh) and repeating the
whole thing once some energy becomes available is simply out of the question.
Since the format of a stateless session ticket from RFC 5077 does not affect
interoperability, in the context of 6TiSCH we would need to mandate the session
resumption support on the JCE side. However, could it be possible to use a
6TiSCH-specific format of this ticket for the initial join as well, where the
session state would be encrypted with a PSK shared between JN and JCE?
Obviously, in this case JCE would need to generate the session resumption state
before a session has been even established but I believe this would greatly
speed up the join process.
Regards,
Mališa Vučinić
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