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Wireless network ns2 code

Wireless network ns2 code is helps to simulate the all kind of the network issues.

What is wireless network

Types of wireless network:

Characteristics of wireless networks:

Wireless network ns2 code

Ns2 on wireless networks:

set cbr_size 500

set cbr_interval 0.002

set num_row 4

set time_duration 100

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(rp) DSDV ;# routing protocol

set ns_ [new Simulator]

set tracefd [open w]

$ns_ trace-all $tracefd

set topo       [new Topography]

$topo load_flatgrid 1000 1000

create-god [expr $num_row * $num_row ]

$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) \

-channel  [new $val(chan)] -topoInstance $topo \

-agentTrace ON -routerTrace OFF\

-macTrace ON \

-movementTrace OFF

for {set i 0} {$i < [expr $num_row*$num_row]} {incr i} {

set node_($i) [$ns_ node]


set k 0;

while {$k < $num_row } {

for {set i 0} {$i < $num_row } {incr i} {

set m [expr $i+$k*$num_row];

$node_($m) set X_ [expr $i*240];

$node_($m) set Y_ [expr $k*240+20.0];

$node_($m) set Z_ 0.0


incr k;


for {set i 0} {$i < $num_row } {incr i} {

set udp_($i) [new Agent/UDP]

set null_($i) [new Agent/Null]


$ns_ attach-agent $node_(0) $udp_(0)

$ns_ attach-agent $node_(7) $udp_(1)

$ns_ attach-agent $node_(2) $udp_(2)

$ns_ attach-agent $node_(7) $udp_(3)

$ns_ attach-agent $node_(6) $null_(0)

$ns_ attach-agent $node_(1) $null_(1)

$ns_ attach-agent $node_(8) $null_(2)

$ns_ attach-agent $node_(15) $null_(3)

for {set i 0} {$i < $num_row } {incr i} {wireless-network-ns2-code

$ns_ connect $udp_($i) $null_($i)


for {set i 0} {$i < $num_row } {incr i} {

set cbr_($i) [new Application/Traffic/CBR]

$cbr_($i) set packetSize_ $cbr_size

$cbr_($i) set interval_ 0.5

$cbr_($i) attach-agent $udp_($i)


$ns_ at 11.0234 “$cbr_(0) start”

$ns_ at 10.4578 “$cbr_(1) start”

$ns_ at 12.7184 “$cbr_(2) start”

$ns_ at 12.2456 “$cbr_(3) start”

for {set i 0} {$i < [expr $num_row*$num_row] } {incr i} {

$ns_ at [expr $time_duration +10.0] “$node_($i) reset”;


$ns_ at [expr $time_duration +10.0] “finish”

$ns_ at [expr $time_duration +10.01] “puts \”NS Exiting…\”; $ns_ halt”

proc finish {} {

global ns_ tracefd

$ns_ flush-trace

close $tracefd


puts “Starting Simulation…”

$ns_ run

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