[Tinyos-help] Again!!!! Low-power CC2420 multihop in TinyOS2.x question????

[Philip Levis]

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