Hello everybody! i ve created a small network composed by lm 335 sensors and xbees in order to measure temperature. Is there anyone that can tell me how can i measure my networks statistics such as packets dropped through put load etc..
yes,
the zigbees will send lets say 1 measurement per 7 seconds. Assuming you have 22 sensors that would mean you need to get 22/7 measurements at the home station per second on average. If that is less you have dropped packets. and you can calculate the average.
More interesting is to make a log with the timestamps of the arrivals of the packets that did make it. You can calculate the minimum, max, average time and the std deviation.
Don'r expect a normal distribution, but a Poison or student distribution (if i remember correctly)
You can then see which values take more time than (average + 1*stdDev). These are indicatores that packets have dropped.
Think you can do more math with the packets that arrive than with the ones that don't ...
my 2 cents,
Think you can do more math with the packets that arrive than with the ones that don't ...
Pretty funny.
Hi mariannadimou I'm not sure you are past this test point already but here is my input for you anyway 
I have been using the Perytons sniffer for my networks (I deal with many 802.15.4 based protocols) and they have a Statistics charts section in their tool that may provide you with the info your are looking for (they provide a 30 days free evaluation of their tool which is quite complete... - http://www.perytons.com/downloads.html).
I eventually ended buying a single channel license from them and we are happy using it - I also got the budget for purchasing an add-on to the basic license with which you can define your own graphs and some other features like sending e-mails when a specific situation happens, etc.
Hope this info helps
Each sensor node could count the number of packets sent and the number acknowledged, and send those stats along with the sensor data. Assuming API mode is being used.