[Tinyos-help] CTP and high traffic rate

[Avinash Sridharan]

Just to add, the numbers are also very dependant on the MAC that you
use. The number below are for the Tmote sky platform with the CC2420
radio, and running the default TinyOS-2.1 CC2420 CSMA MAC.

On Thu, Mar 5, 2009 at 2:46 PM, Avinash Sridharan
<avinash.sridharan at gmail.com> wrote:
> The per node rate you can send at depends on the number of nodes in
> your topology (and the interference graph). For a 20 node topology
> (with around 3-4 hops) and packet size of 40 bytes (payload+header)
> without aggregation you should be able to hit around 2 packets per
> second. The average link quality also makes a difference. The average
> link quality for these topologies is around 40-50%.
>
> For 40 node topology the numbers might come down to approximately 1
> packet per second. These numbers should hold for CTP with CBR traffic.
>
> -Avinash
>
> On Thu, Mar 5, 2009 at 2:05 PM, Omprakash Gnawali <gnawali at usc.edu> wrote:
>> On Wed, Mar 4, 2009 at 11:58 PM, Martin van de Goor
>> <martin.vandegoor at gmail.com> wrote:
>> ...
>>>>> In my setup, five (regular) packets are sent each second by one node.
>>>>> These five packets are received by other nodes, aggregated into one
>>>>> packet at each node, and sent using CTP.
>>>>> The reason is that sometimes a node crashes and I'm trying to figure
>>>>> out whether it is my code or CTP not being suited for this purpose.
>>
>> 1 pkt/second with five nodes is not high rate at all. You should be
>> able to do several times that.
>>
>> - om_p
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>
>
>
> --
> Phd Dept. of Electrical Engineering
> University of Southern California
> http://www-scf.usc.edu/~asridhar
>



-- 
Phd Dept. of Electrical Engineering
University of Southern California
http://www-scf.usc.edu/~asridhar