CoAP Performances observed, when vary the data transmission interval .It is changes the performance like throughput,delay, energy consumption are how effectively performing will be checked.
Open er-example-client.c
file location;
Home/ contiki/examples/
er-rest-examples/
Do modify the following codes into
the file and set interval 10,15,20.
And take performance in cooja
network simulator.
#define TOGGLE_INTERVAL 10
etimer_set(&et, TOGGLE_
INTERVAL * CLOCK_SECOND); // call
Open a Contiki cooja network
simulator
Cmd: cd contiki/ tools/ cooja
--> press enter
ant run --> enter
In cooja:
Open contiki cooja network
simulator and create new
simulation(ctrl+n).
border-router.c, er-example-
server.c, er-example-client.c create
motes for
Server ,client location:
home/contiki/examples/er-rest-example.
Border router location:
home/contiki/examples/ipv6/
rpl-border-router
Open motes menu >> add motes
>> create new motes type
create new simulation according
to network topology for different
traffic scenario.
Connect the router to server.
In terminal at above location.
make-connect-router-cooja
Edit script file,
After complete the simulation, save it
desired location (.csc) file will be created.
Add the following script code into
that file to calculate metrics
Start the cooja
Run simulation after every
time interval modification.
For example Screen shots,
Interval 10:
After simulation save the metrics
calculation file in desired location
to evaluate graph.
Performance_output:
Time interval | gen.packet | rec.packet | delay | throughput | energy_consumption |
---|---|---|---|---|---|
10 | 120 | 81 | 1.119 | 29.80 | 0.8867(in joules) |
15 | 102 | 66 | 1.368 | 24.28 | 0.8640(in joules) |
20 | 82 | 45 | 1.228 | 16.56 | 0.9412(in joules) |
Open terminal >>ipython >> enter codes >> enter.
Code: throughput
import numpy as np
import matplotlib
import matplotlib.pyplot as plt
x = [10, 15, 20]
y1 = [29.80, 24.28, 16.56]
plt.plot(x,y1,linewidth=2.5, marker=’p’, markersize=9, fillstyle=’top’,
markerfacecoloralt =’tan’, linestyle=’-‘, color=’maroon’,label = ‘COAP’)
plt.xlabel(‘Data Transmission Interval’)
plt.ylabel(‘Throughput’)
plt.rc(‘font’,family=’Times New Roman’)
plt.rcParams.update ({‘font.size’:14})
plt.legend(loc=’center ‘, prop={‘size’:14})
plt.grid()
plt.show()
Code: Delay
import numpy as np
import matplotlib
import matplotlib.pyplot as plt
x = [10, 15, 20]
y1 = [1.119, 1.36, 1.32]
plt.plot(x,y1,linewidth=2.5,
marker=’p’, markersize=9, fillstyle=’top’,
markerfacecoloralt =’tan’,
linestyle=’-‘, color=’maroon’,label = ‘COAP’)
plt.xlabel(‘Data Transmission Interval’)
plt.ylabel(‘Delay’)
plt.rc(‘font’,family=’Times New Roman’)
plt.rcParams.update ({‘font.size’:14})
plt.legend(loc=’center ‘, prop={‘size’:14})
plt.grid()
plt.show()