Re: [6lowpan] Does the 6lowpan WG want to close?

Carsten Bormann <cabo@tzi.org> Mon, 18 June 2012 18:31 UTC

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From: Carsten Bormann <cabo@tzi.org>
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Date: Mon, 18 Jun 2012 20:30:54 +0200
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To: "Benjamin A. Rolfe" <ben@blindcreek.com>
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Subject: Re: [6lowpan] Does the 6lowpan WG want to close?
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On Jun 18, 2012, at 20:09, Benjamin A. Rolfe wrote:

> http://standards.ieee.org/about/get/802/802.15.html
> There are no ongoing projects to amend 802.15.7 at this time.

Thanks Ben.

So is there any other activity for getting IP going on top of Li-Fi?

A quick check seems to indicate:
-- as this re-uses 802.15.4's MAC, they'd need something like our dispatch scheme.
-- fragmentation is needed for PHY 1 (PHY frame size limited to 1023 B), not for the higher ones.
-- HC would probably help with the slower PHY 1, not so much with the faster ones.

Which of the PHYs is actually real?

Whether the 6LoWPAN network model (and thus 6LoWPAN-ND) fits is not clear to me -- much of Li-Fi's use will be unidirectional, as a fill-in for some other connectivity, and there will be a lot of star topology usage (see page 6).  Mesh forwarding (route-over/-under) usage appears less obvious to me.

Of course, the most important question is whether there are people interested in doing the work.
If there is energy and a clear objective, we will find a way to make this happen (in whatever WG the IETF chooses to do this).

Grüße, Carsten