To further clarify:
802.15.1 is the IEEE standard base standard for Bluetooth. If you had
said 802.15.1 is to Bluetooth SIG as 802.11 is to WiFi Alliance you
would be more correct.
802.15.4 was developed for very different applications and physical
environments than Bluetooth. They are completely different standards.
802.14.1 and 802.15.4 are significantly different MACs, and 802.15.4
includes multiple PHY technologies.
The latest revision (802.15.4-2011) includes the 3 PHY amendments
approved since 2006, bringing the total of distinct PHYs to 6, with
multiple banding options within some PHY specifications, all under a
single, common MAC. There are at least 5 current task groups working on
or finishing up further amendments. It has become the most popular
downloaded standard in the 802 family and has been applied to a large
variety of very different applications.
Of course Bluetooth (802.15.1) has deployed in billions of devices and
continues to be included in nearly all consumer devices. It is
optimized for short physical range, small networks (piconets), low
energy consumption, and high density of simultaneously operating
piconets. Most implementations limit TX power and optimize for a range
of a couple meters or less.
Hope that clarification helps.
There is a world of difference between 802.15.4 and BT-LE.
On 4/1/11 5:33 AM, "ext Alexandru Petrescu"<[email protected]>
wrote:
Le 01/04/2011 12:12, Carsten Bormann a écrit :
It seems to me IMHO bt-le is just a new phy, but same mac, hence ip
would not be affected.
From the presentation, I had a different impression.
But of course, a document stating we do things over bt-le as
usually as over bt, would not hurt.
Actually, it is required, as RFC4944 and its updates only define
6LoWPAN for IEEE 802.15.4. If two people took these documents and
tried to apply them to BT-LE, they wouldn't necessarily arrive at
interoperable specifications.
To me IMHO bluetooth is to 802.15.4 what wifi is to 802.11 - a marketing
name. It seems sufficient to specify ipv6 over 802.15.4 and that would
cover all variants of bluetooth. There is no ipv6-over-802.11n, nor
ipv6-over-wifilowpower, for example.
I may be wrong though about bluetooth being mostly 802.15.4 rfc4944 and
rfc2460.
Is the WG re-opened?
No, it is alive and well until such a time when it is actually being
closed. All that was said is that the Prague meeting will be the last
physical meeting of the WG. We want to close our unfinished business,
and a number of documents are based on discussions that went on at
least since Beijing, so if they fit our charter and we have energy to
work on them, there is no problem doing that.
sounds like doing new work without physical meetings... ok...
Alex
Gruesse, 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
_______________________________________________
6lowpan mailing list
[email protected]
https://www.ietf.org/mailman/listinfo/6lowpan
