TDDI07 Lab Report
Lab 3
Student Name:
Group:
Date:
Lab questions
1) Low-power listening:
a) What is the duty cycle? Which is its unit?
b) A certain mote is duty cycling. How can you make sure that it
receives the packet that you want to send to it?
2) Serial communication:
a)
b)
c)
d)
Which are the interfaces used for PC-mote communication?
Which component provides them?
Which commands can you use for sending a message?
Write the java command from the TinyOS tool set to sniff the
packets in a Linux terminal.
Assignment 1 graph and questions
In this assignment you are required to measure the duty cycle varying the
sleeping time and plot it in a graph where the x-axis represent the
sleeping time and the y-axis the duty cycle. A table with the values of the
graph has to be handed in as well. The sleeping times are 10, 100, 500
and 1000 milliseconds.
How is the duty cycle calculated? How is the energy consumption affected
using the duty cycle?
Assignment 2 graph and questions
You need to create a graph where the x-axis is the sleeping interval and
the y-axis is the duty cycle as in the assignment 1. However, this time
you will have 2 curves representing the duty cycle of the sender and the
receiver. Give the values of the graph in a table as well.
When is the communication more energy efficient? Which are the
parameters impacting the duty cycle? If we change the IPI, will we get the
same results? Which are the affecting variables?