Skip to main content

Energy Model in ns2 - NS2 Tutorial # 6

LEcture 6 - Ns2 Energy Model



Wireless NEtworking in ns2



By default, nodes have infinite energy, to make it finite, we need to implement energy model.



in the node config we need to include the following lines



-energyModel "EnergyModel" \

-initialEnergy 3.0 \

-txPower 0.9 \

-rxPower 0.5 \

-idlePower 0.45 \

-sleepPower 0.05 \



Energy (joules) = Power (Watts) * Time (sec)



www.nsnam.com for downloading the source codes

Also subscribe to my youtube channel



www.youtube.com/tspradeepkumar



Thanks for watching. Stay Tuned for more Lectures...



Subscribe and Share.











Copy the Source Code here



#Lecture 6 

#Example of Wireless networks

#Step 1 initialize variables

#Step 2 - Create a Simulator object

#step 3 - Create Tracing and animation file

#step 4 - topography

#step 5 - GOD - General Operations Director

#step 6 - Create nodes

#Step 7 - Create Channel (Communication PATH)

#step 8 - Position of the nodes (Wireless nodes needs a location)

#step 9 - Any mobility codes (if the nodes are moving)

#step 10 - TCP, UDP Traffic

#run the simulation


#initialize the variables

set val(chan)           Channel/WirelessChannel    ;#Channel Type

set val(prop)           Propagation/TwoRayGround   ;# radio-propagation model

set val(netif)          Phy/WirelessPhy            ;# network interface type WAVELAN DSSS 2.4GHz

set val(mac)            Mac/802_11                 ;# MAC type

set val(ifq)            Queue/DropTail/PriQueue    ;# interface queue type

set val(ll)             LL                         ;# link layer type

set val(ant)            Antenna/OmniAntenna        ;# antenna model

set val(ifqlen)         50                         ;# max packet in ifq

set val(nn)             6                          ;# number of mobilenodes

set val(rp)             AODV                       ;# routing protocol

set val(x) 500 ;# in metres

set val(y) 500 ;# in metres

#Adhoc OnDemand Distance Vector


#creation of Simulator

set ns [new Simulator]


#creation of Trace and namfile 

set tracefile [open wireless.tr w]

$ns trace-all $tracefile


#Creation of Network Animation file

set namfile [open wireless.nam w]

$ns namtrace-all-wireless $namfile $val(x) $val(y)


#create topography

set topo [new Topography]

$topo load_flatgrid $val(x) $val(y)


#GOD Creation - General Operations Director

create-god $val(nn)


set channel1 [new $val(chan)]

set channel2 [new $val(chan)]

set channel3 [new $val(chan)]


#configure the node

$ns node-config -adhocRouting $val(rp) \

-llType $val(ll) \

-macType $val(mac) \

-ifqType $val(ifq) \

-ifqLen $val(ifqlen) \

-antType $val(ant) \

-propType $val(prop) \

-phyType $val(netif) \

-energyModel "EnergyModel" \

-initialEnergy 3.0 \

-txPower 0.9 \

-rxPower 0.5 \

-idlePower 0.45 \

-sleepPower 0.05 \

-topoInstance $topo \

-agentTrace ON \

-macTrace ON \

-routerTrace ON \

-movementTrace ON \

-channel $channel1 


#Energy Model

# the unit of energy is joules = Power (Watts) * time (Seconds)


set n0 [$ns node]

set n1 [$ns node]

set n2 [$ns node]

set n3 [$ns node]

set n4 [$ns node]

set n5 [$ns node]


$n0 random-motion 0

$n1 random-motion 0

$n2 random-motion 0

$n3 random-motion 0

$n4 random-motion 0

$n5 random-motion 0


$ns initial_node_pos $n0 20

$ns initial_node_pos $n1 20

$ns initial_node_pos $n2 20

$ns initial_node_pos $n3 20

$ns initial_node_pos $n4 20

$ns initial_node_pos $n5 50


#initial coordinates of the nodes 

$n0 set X_ 10.0

$n0 set Y_ 20.0

$n0 set Z_ 0.0


$n1 set X_ 210.0

$n1 set Y_ 230.0

$n1 set Z_ 0.0


$n2 set X_ 100.0

$n2 set Y_ 200.0

$n2 set Z_ 0.0


$n3 set X_ 150.0

$n3 set Y_ 230.0

$n3 set Z_ 0.0


$n4 set X_ 430.0

$n4 set Y_ 320.0

$n4 set Z_ 0.0


$n5 set X_ 270.0

$n5 set Y_ 120.0

$n5 set Z_ 0.0

#Dont mention any values above than 500 because in this example, we use X and Y as 500,500


#mobility of the nodes

#At what Time? Which node? Where to? at What Speed?

$ns at 1.0 "$n1 setdest 490.0 340.0 25.0"

$ns at 1.0 "$n4 setdest 300.0 130.0 5.0"

$ns at 1.0 "$n5 setdest 190.0 440.0 15.0"

#the nodes can move any number of times at any location during the simulation (runtime)

$ns at 20.0 "$n5 setdest 100.0 200.0 30.0"


#creation of agents

set tcp [new Agent/TCP]

set sink [new Agent/TCPSink]

$ns attach-agent $n0 $tcp

$ns attach-agent $n5 $sink

$ns connect $tcp $sink

set ftp [new Application/FTP]

$ftp attach-agent $tcp

$ns at 1.0 "$ftp start"


set udp [new Agent/UDP]

set null [new Agent/Null]

$ns attach-agent $n2 $udp

$ns attach-agent $n3 $null

$ns connect $udp $null

set cbr [new Application/Traffic/CBR]

$cbr attach-agent $udp

$ns at 1.0 "$cbr start"


$ns at 30.0 "finish"


proc finish {} {

global ns tracefile namfile

$ns flush-trace

close $tracefile

close $namfile

exit 0

}


puts "Starting Simulation"

$ns run





T S Pradeep Kumar




Comments

  1. Great explanation sir. I am having query like at 3.45 min, you used a concept 'residual energy threshold', can you please tell me the threshold value for the same.

    ReplyDelete
    Replies
    1. At the Residual Energy Threshold, its 1.0 Joules as per the source code of energy model.cc file... In case, if you want to change the value, you can do that by modifying the source code.

      Delete
  2. Sir while executing this code I am getting this error. Don't know why please help me resolving this issue.
    invalid command name "-llType"
    while executing
    "-llType $val(ll) \
    "
    (file "wireless2.tcl" line 75)

    ReplyDelete

Post a Comment

Popular posts from this blog

Installing ns-3.34 in Ubuntu 20.04

This post shows how to install ns 3.34 in Ubuntu 20.04 LTS Prerequisites: Fresh installation of Ubuntu Version 20.04 LTS  ns3.34 can be downloaded from here Follow the video link for complete step by step instructions on the installation.  This version fixes the compilation issues of vanet-routing-compare.cc (bug in ns3.33)  Issue the following commands after opening a terminal  $ sudo apt update $ sudo apt install g++ python3 python3-dev python-dev pkg-config sqlite3 python3-setuptools git qt5-default gir1.2-goocanvas-2.0 python3-gi python3-gi-cairo python3-pygraphviz gir1.2-gtk-3.0 ipython3 openmpi-bin openmpi-common openmpi-doc libopenmpi-dev autoconf cvs bzr unrar openmpi-bin openmpi-common openmpi-doc libopenmpi-dev tcpdump wireshark libxml2 libxml2-dev Unzip or untar the ns-allinone-3.34.tar.bz2 in the home folder (in my case its /home/pradeepkumar) $ cd ns-allinone-3.34/ $ ./build.py --enable-examples --enable-tests  Once the installation is completed, you may get an output show

Installation of ns3 in Windows 10 and Windows 11 OS using WSL (Windows Subsystem for Linux)

This post shows how to install ns-3.33 in Windows 10 through WSL (Windows Subsystem for Linux) This posts works for Windows 11 also (I have tested it on a Windows 11 ISO and it works the Same way as mentioned in the following post.) This post will work for ns-3.3x version. Prerequisites : Install Windows Subsystem for Linux with GUI: Please refer the following video  System Information: OS used: Windows 10 and WSL (Ubuntu 20.04) GUI: XServer for Windows NS3 Version: ns-3.33 See the following complete video on how to install ns3 in Windows 10 Step 0 : Open XLaunch Step 1 :  Open WSL using PowerShell and open it as Administrator Command:/  wsl $ xfce4-session The GUI of Ubuntu Opens within Windows 10 OS. Step 2 : Download ns3 from nsnam.org website through Mozilla Firefox browser Step 3: Open a Terminal  $ sudo apt update $ sudo apt install build-essential autoconf automake libxmu-dev python3-pygraphviz cvs mercurial bzr git cmake p7zip-full python3-matplotlib python-tk python3-dev qt5-q

Installing NS-3.32 in Ubuntu 20.04

This is about installing ns version 3.32 in Ubuntu 20.04 LTS. #ns3 #ns3 .32 #networksimulation The commands used in the video are given here. $] sudo apt update $] sudo apt install build-essential autoconf automake libxmu-dev python3-pygraphviz cvs mercurial bzr git cmake p7zip-full python3-matplotlib python-tk python3-dev qt5-qmake qt5-default gnuplot-x11 wireshark Download the ns-allinone-3.32.tar.bz2 package from nsnam.org and copy it to /home/ folder See the full video for detailed instructions Extract it either in GUI or using command $] tar jxvf ns-allinone-3.32.tar.bz2 $] cd ns-allinone-3.32/ $] ./build.py --enable-examples --enable-tests The above command will take some time to install all the packages  You can see the output as shown below ns3 To check whether ns3 installed successfully, use the following commands. $] cd ns-3.32/ $] ./waf --run hello-simulator You should get the output as Hello Simulator $] ./waf --run first This is the example from the ns-3.32/exa