Le 02/04/2011 13:22, Carles Gomez Montenegro a écrit :
It may be that BT-LE is going to be backwards compatible with
Bluetooth, just speculating. Otherwise why would they keep the
bluetooth name in BT-LE.
Alex
A BT-LE device cannot talk with a non-BT-LE (say "classic"
Bluetooth) device.
Yes, I agree it may be so. This is one aspect backwards (in)compatibility.
But also, if BT-LE devices will support IPv6 as BT devices do, IPv6
solves the above incompatibility issue.
There are many differences in the protocol stacks, as for example in
the PHY and Link layers.
However, a dual-mode device (i.e. a device that supports both
"classic" Bluetooth and BT-LE) can benefit from the fact that many
elements already present in classic Bluetooth can be reused in a
BT-LE implementation.
Yes, I agree. And there exist dual mode such devices supporting BT/ANT+
as well. These dual-mode devices are excellent candidates to be
Routers.
BT-LE was designed from the basis of "classic" Bluetooth for
optimized operation in control and monitoring applications, which
typically involve devices that exhibit constraints (in energy supply,
processing power, memory, etc.).
For more details about all this, you may refer to the Bluetooth
specs. They are publicly available.
Yes, it's here:
https://www.bluetooth.org/Technical/Specifications/adopted.htm
I am looking mainly at "Core Version 4.0", Part A, "Logical Link Control
and Adaptation Protocol Specification", L2CAP, as requested by section
4.5 "Basic Rate and Low Energy Combined Core Configuration".
Alex
Carles
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