[Tinyos-help] Maximum datarate on CC1000 radio

[venkatesh s]

Well David, thanks for that.

But i wonder about what you say 1926 bytes/sec, which means its almost
15kbps.  I find loss for 5 kbps. it gives almost 5 % loss for node 2 and 0%
loss for node 1. Also, i would like to do this multihop testing on a single
range, so that i can capture what is happenning by TOSBase..

I will experiment out the idea that you have put and reply you back with the
result.



On 8/1/06, David Moss <dmm at rincon.com> wrote:
>
>  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
>
>
>


-- 
--
with Cheers,
_,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:
                 VeNkAtEsH
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