A simple sensor network simulation using Tiny OS

1
A simple sensor network simulation using Tiny OS

• By
• Jonghoon Kim Rajesh Sankaran
• EE CSC, Louisiana State University,
• June 21st , 2007

2
Tiny OS

• What is TinyOS?
• TinyOS is an event based operating
  environment designed for use with embedded
  networked sensors. More specifically, it is
  designed to support the concurrency intensive
  operations required by networked sensors with
  minimal hardware requirements.
• How hard is TinyOS to learn?
• The concurrency concept requires some effort to
  get used to but it's essentially C. Proficiency
  and/or experience with GNU development tools is a
  plus, but not mandatory.
• From http//www.tinyos.net/faq.htmlSEC-16

3
Tiny OS and TinyViz on Windows.

• Simple , Easy , Stable and It Works !
• Go to ,
• http//tinyos.net/windows-1_1_0.html
• from there go to,
• http//webs.cs.berkeley.edu/users/users.php?downlo
  ad1
• Now , fill out the form and download and
  install.
• Please Install the above with Admin Privileges
  only. Else the Install will finally abort leaving
  a cruft behind.

4
Now the Simulation

• Simulates a bunch of motes that cluster together
  and modify a bunch of files in a distributed way.
• Implemented
• Clustering and Leader Election
• Time Synchronization.
• Distributed File servers
• File Distribution , Mutual Exclusion

Some Features Implemented

• Energy Penalty for sending receiving and staying
  idle. to be close to real world.
• Network Time Server and percolation of time into
  the network.

5
Rules of the game

• Every node gets a energy penalty of 10 units for
  send , 5 Units for receive and 1 unit for Idle.
• Every Node starts as a newbie and makes 10
  attempts to reach a cluster head.
• Any Cluster cannot have less that 2 client Nodes
  and a node cannot join a cluster whose rank is
  greater or less that itself by 5.
• When a file request which is very old its dropped
  ?. ( about 10 counts ). Simple rollback .

6
How it all looks
7
Lets see the Demo .