[Tinyos-help] WSN in presence of dense WLAN

[Razvan Musaloiu-E.]

Hi!

On Fri, 6 Oct 2006, manjunath at ece.iisc.ernet.in wrote:

>
> The following is just a thought, any commnets will be very useful...
>
> As Both WLAN (802.11) and micaz (802.15.4) are CSMA/CA based, how can
> there could be collisions between their packets? Does'nt Carrier Sense
> Threshold would takecare of collisions ?????

Zigbee and WiFi don't understand each other (Zigbee doesn't hear nor send
the RTSs/CTSs from WiFi) so they are not really collaborating in sharing
the environment.

Some time ago we did a bunch of tests and we were able to detect a used
WiFi channel using the CC2420's RSSI. :-)

--
Razvan ME

> Offcourse there could be decrease in the overall throughput in the
> presence of WLAN as number of contensions (nodes) increases collision
> probability increases.
>
> Regards,
> Manjunath
>
> On Thu, 5 Oct 2006, Tarun Bansal wrote:
>
> > We have a dense WLAN (802.11g) running at our place (a closed room).
> > When we try to run our micaz motes (working at 2.405 Ghz) - most of
> > the packets are dropped midway. Is it because of the dense WLAN at the
> > same place? If yes, then is there any solution (apart from switching
> > off the WLAN, of course)
> >
> > Tarun
> >
>