Wireless Simulation

set val(chan)         Channel/WirelessChannel  ;# channel type
set val(prop)         Propagation/TwoRayGround ;# radio-propagation model
set val(ant)          Antenna/OmniAntenna      ;# Antenna type
set val(ll)           LL                       ;# Link layer type
set val(ifq)          Queue/DropTail/PriQueue  ;# Interface queue type
set val(ifqlen)       50                       ;# max packet in ifq
set val(netif)        Phy/WirelessPhy          ;# network interface type
set val(mac)          Mac/802_11               ;# MAC type
set val(rp)           DSDV                     ;# ad-hoc routing protocol
set val(nn)           5                        ;# number of mobilenodes
set val(x)            500
set val(y)            400
set val(stop)         150

set ns [new Simulator]
set tracefd [open ns2.tr w]
set windowVsTime2 [open win.tr w]
set namtrace [open ns2.nam w]


$ns trace-all $tracefd
$ns namtrace-all-wireless $namtrace $val(x) $val(y)

$ns color 2 Red
set topo [new Topography]

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

create-god $val(nn)

$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 ON

for {set i 0} {$i < $val(nn) } {incr i} {
    set node_($i) [$ns node]
}

$node_(0) set X_ 5.0
$node_(0) set Y_ 5.0
$node_(0) set Z_ 0.0

$node_(1) set X_ 490.0
$node_(1) set Y_ 285.0
$node_(1) set Z_ 0.0

$node_(2) set X_ 150.0
$node_(2) set Y_ 240.0
$node_(2) set Z_ 0.0

$ns at 10.0 "$node_(0) setdest 250.0 250.0 3.0"
$ns at 15.0 "$node_(1) setdest 245.0 285.0 5.0"
$ns at 110.0 "$node_(0) setdest 480.0 300.0 10.0"

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
$tcp set fid_ 2
set ftp [new Application/FTP]
$ftp attach-agent $tcp
$ns at 10.0 "$ftp start"

proc plotWindow {tcpSource file} {
    global ns
    set time 0.1
    set now [$ns now]
    set cwnd [$tcpSource set cwnd_]
    puts $file "$now $cwnd"
    $ns at [expr $now+$time] "plotWindow $tcpSource $file"

}

$ns at 10.1 "plotWindow $tcp $windowVsTime2"

for {set i 0} {$i < $val(nn) } {incr i} {
    $ns initial_node_pos $node_($i) 30
}

$ns at $val(stop) "$ns nam-end-wireless $val(stop)"
$ns at $val(stop) "stop"
#$ns at 150.01 "puts \"end simulation\"; $ns Halt"

proc stop {} {
    global ns tracefd namtrace
    $ns flush-trace
    close $tracefd
    close $namtrace
    exit 0
}

$ns run