On Aug 3, 2007, at 4:35 AM, Roman Lim wrote:
Hi Ravi
I use LPL with tmote sky and the power consumption seems to be as
expected (I don't have exact numbers, but a oscilloscope plot where
the
current consumption in sleep mode is very low compared to active
mode).
I think, the CTP implementation in its current state needs some
modifications to use it with lpl. these are:
* set rx sleep interval for forwarded packet
* set no rx sleep interval for packets to root nodes (assumption: root
nodes are not battery powered)
* send consecutive packets in a very short interval to benefit from
the
fact that nodes stay on for a while after they received a packet
(packet
bursts)
* modify offsets and windows in header files to take the shorter
reaction time due to lpl into consideration
I don't know any other TOS2 implementations of multihop collection
protocols, so I can not suggest another one.
2.0.1 and 2.0.2 both have a MultihopLQI port, in lib/net/lqi. It's
much lighter weight than CTP but not as robust.
Phil
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