Re: [Tinyos-help] WSN in presence of dense WLAN

2006-10-06 Thread [EMAIL PROTECTED] 

I just need a clarification:

Ok, It is implicit that I am not considering RTS/CTS, what about in
the case Basic Access and everyone is in the vicinity of each other (Both
WLAN nodes and zigbee motes) ???

Thanking you,
D. Manjunath

On Fri, 6 Oct 2006, Razvan Musaloiu-E. wrote:

 Hi!

 On Fri, 6 Oct 2006, [EMAIL PROTECTED] 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
  
 


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[Tinyos-help] WSN in presence of dense WLAN

2006-10-05 Thread Tarun Bansal 

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
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Re: [Tinyos-help] WSN in presence of dense WLAN

2006-10-05 Thread Marco Antonio Lopez Trinidad 

Hi,
for the micaz, in the MakeXbowlocal file, in principle there are commented the
frequencies that do not overlap the 802.11.

So, compiling with the uncommented options will function without turning off
your net.


cheers,
--marco.

Quoting Tarun Bansal [EMAIL PROTECTED]:

 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
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