[Tinyos-help] Maximum datarate on CC1000 radio

[David Moss]

I can't tell you what the throughput would be for a multihop network because
it would depend on a number of factors, but for a singlehop network of
mica2's with no loss you can expect 1926 bytes/sec using the original CC1000
radio stack.  If node 2 in your network is constantly sending out messages,
I would expect node 1 to have to receive and then transmit the forwarded
message, which would probably result in less than half the throughput
compared to a singlehop setup.
 
A new CC1000 radio stack (back-ported from TinyOS 2.x) is available in the
TinyOS 1.x CVS under /contrib/rincon/tos/lib/CC1000.  This stack is 21%
faster even at the same baud rate - 2324 bytes/sec.  I didn't include any
time sync interfaces in it, but it works great on my multihop networks.  It
should drop in place of anyone's current stack so long as they include the
correct directories at compile time.
 
-David

-----Original Message-----
From: tinyos-help-bounces at Millennium.Berkeley.EDU
[mailto:tinyos-help-bounces at Millennium.Berkeley.EDU] On Behalf Of venkatesh
s
Sent: Monday, July 31, 2006 8:06 PM
To: tinyos-help at Millennium.Berkeley.EDU
Subject: [Tinyos-help] Maximum datarate on CC1000 radio


Hi all,
 
I am working on packet loss and delay measurements.  The fact is i need to
do this on multi-hop, for which i need to fix the datarates.  It seems that
when the application is sending 300 packets/minute, out of which i get
around 5.2% loss.  The node nearer to the base station has 0% loss. 
My network chosen was..
 
   0 -------- 1---------------2
The measurements were done on mica2 mote.  Also i observed that as the
number of motes increased in the range, losses also increased..  Anyone who
know the cause or what might be the datarate for which there will be no
loss, please let me know.. 
 
 
Thanking you,
 
venkatesh.S
 

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