Implementation of simple mobile node scenario using NS simulator (MCC)

# simple-wireless.tcl
# A simple example for wireless simulation

# ======================================================================
# Define options
# ======================================================================
set val(chan)           Channel/WirelessChannel    ;# channel type
set val(prop)           Propagation/TwoRayGround   ;# radio-propagation model
set val(netif)          Phy/WirelessPhy            ;# network interface type
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)             3                          ;# number of mobilenodes
set val(rp)             DSDV                       ;# routing protocol
set val(x)              500           ;# X dimension of the topography
set val(y)              500       ;# Y dimension of the topography

# ======================================================================
# Main Program
# ======================================================================


#
# Initialize Global Variables
#
set ns_ [new Simulator]
set tracefd     [open simple.tr w]
set namtrace    [open simple.nam w]
$ns_ trace-all $tracefd
$ns_ namtrace-all-wireless $namtrace $val(x) $val(y)

# set up topography object
set topo       [new Topography]

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

#
# Create God
#
create-god $val(nn)

#
#  Create the specified number of mobilenodes [$val(nn)] and "attach" them
#  to the channel.
#  Here two nodes are created : node(0) and node(1)

# configure 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) \
-channelType $val(chan) \
-topoInstance $topo \
-agentTrace ON \
-routerTrace ON \
-macTrace OFF \
-movementTrace OFF

for {set i 0} {$i < $val(nn) } {incr i} {
set node_($i) [$ns_ node]
$node_($i) random-motion 0 ;# disable random motion
}

#
# Provide initial (X,Y, for now Z=0) co-ordinates for mobilenodes
#
$node_(0) set X_ 200.0
$node_(0) set Y_ 100.0
$node_(0) set Z_ 0.0

$node_(1) set X_ 100.0
$node_(1) set Y_ 355.0
$node_(1) set Z_ 0.0

$node_(2) set X_ 150.0
$node_(2) set Y_ 150.0
$node_(2) set Z_ 0.0

#
# Now produce some simple node movements
# Node_(1) starts to move towards node_(0)
#
$ns_ at 20.0 "$node_(1) setdest 145.0 20.0 15.0"
$ns_ at 10.0 "$node_(0) setdest 150.0 50.0 1.0"

# node 2 starts tomove towards node 0
$ns_ at 30.0 "$node_(2) setdest 148.0 40.0 1.0"
$ns_ at 10.0 "$node_(0) setdest 150.0 50.0 1.0"

# Node_(1) then starts to move away from node_(0)
$ns_ at 90.0 "$node_(1) setdest 390.0 160.0 15.0"
$ns_ at 90.0 "$node_(2) setdest 222.0 150.0 15.0"

# Setup traffic flow between nodes
# TCP connections between node_(0) and node_(1)

set tcp [new Agent/TCP]
$tcp set class_ 2
set sink [new Agent/TCPSink]
$ns_ attach-agent $node_(0) $tcp
$ns_ attach-agent $node_(1) $sink
$ns_ connect $tcp $sink
set ftp [new Application/FTP]
$ftp attach-agent $tcp
$ns_ at 10.0 "$ftp start"

#
# Tell nodes when the simulation ends
#
for {set i 0} {$i < $val(nn) } {incr i} {
$ns_ at 150.0 "$node_($i) reset";
}
$ns_ at 200.0 "stop"
$ns_ at 200.01 "puts \"NS EXITING...\" ; $ns_ halt"
proc stop {} {
global ns_ tracefd
$ns_ flush-trace
close $tracefd
exec nam simple.nam
}
puts $tracefd "M 0.0 nn $val(nn) x $val(x) y $val(y) rp $val(rp)"

puts "Starting Simulation..."
$ns_ run

Output: