A couple of minor comments in addition to Jonathan's and Kris' comments: Section 1:
"Low bit rate: the IEEE 802.15.4 standard defines a maximum over-the-air rate of 250 kb/s, as well as lower data rates of 40 kb/s and 20 kb/s for each of the currently defined physical layers (2.4 GHz, 915 MHz and 868 MHz, respectively)." Not for 802.15.4-2006 - there are higher bit rates in the sub-GHz bands --- "Through their inability to transmit MAC layer beacons, RFDs can only communicate with FFDs in a resulting "master/slave" star topology." This isn't actually the case. There is a distinction between the implicit tree topology for network membership implied by 802.15.4 through the beacon/association mechanisms and actual topology formed by data communications. RFDs can transmit peer-to-peer providing they have joined through an FFD, assuming use of 802.15.4 network membership mechanisms, which aren't strictly necessary. I would generally avoid mentioning FFD and RFD. --- Robert Robert Cragie, Principal Engineer _______________________________________________________________ Jennic Ltd, Furnival Street, Sheffield, S1 4QT, UK http://www.jennic.com Tel: +44 (0) 114 281 2655 _______________________________________________________________ Geoff Mulligan wrote: > Folks, > This note formally starts the WG Last Call for comments on > draft-ietf-6lowpan-usecases-03.txt, "Design and Application Spaces for > 6LoWPANs". > > The document can be found at: > http://www.ietf.org/id/draft-ietf-6lowpan-usecases-03.txt > > The document is intended to be submitted by this Working Group to the > IESG for publication as an Informational Document. > > Please review the document carefully (one last time), and send your > comments to the 6lowpan list. Please also indicate in your response > whether or not you think this document is ready to go to the IESG. > > This Last Call will end on Thursday 1 October 2009 at 2359 UTC. > > Thanks, > Geoff & Carsten > > _______________________________________________ > 6lowpan mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/6lowpan > > _______________________________________________ 6lowpan mailing list [email protected] https://www.ietf.org/mailman/listinfo/6lowpan
