First wimax simulation script - wimax1.tcl 11Mb에 대한 실험 - 논문에 실제 참조해봄-

# Test file for wimax - Based on the sample script written by Rouil
# Simulation time - 25 seconds
# Topology - 1100 x 1100


#check input parameters
if {$argc != 0} {
    puts ""
    puts "Wrong Number of Arguments! No arguments in this topology"
    puts ""
    exit (1)
}

# set global variables
set nb_mn 1                ;# max number of mobile node
set packet_size    1500            ;# packet size in bytes at CBR applications
set output_dir .
set gap_size 1 ;#compute gap size between packets
puts "gap size=$gap_size"
set traffic_start 100
set traffic_stop  200
set simulation_stop 210

#define debug values
Mac/802_16 set debug_ 1
Mac/802_16 set rtg_ 20
Mac/802_16 set ttg_ 20
Mac/802_16 set frame_duration_ 0.004
Mac/802_16 set client_timeout_ 110 ;#to avoid BS disconnecting the SS since the traffic starts a 100s
Phy/WirelessPhy/OFDM set g_ 0.25

#define coverage area for base station: 20m coverage
Phy/WirelessPhy set Pt_ 0.025
#Phy/WirelessPhy set freq_ 2412e+6
#Phy/WirelessPhy set RXThresh_ 2.90781e-09
Phy/WirelessPhy set RXThresh_ 2.025e-12 ;#500m radius
Phy/WirelessPhy set CSThresh_ [expr 0.9*[Phy/WirelessPhy set RXThresh_]]

# Parameter for wireless nodes
set opt(chan)           Channel/WirelessChannel    ;# channel type
set opt(prop)           Propagation/TwoRayGround   ;# radio-propagation model
set opt(netif)          Phy/WirelessPhy/OFDM       ;# network interface type
set opt(mac)            Mac/802_16/BS              ;# MAC type
set opt(ifq)            Queue/DropTail/PriQueue    ;# interface queue type
set opt(ll)             LL                         ;# link layer type
set opt(ant)            Antenna/OmniAntenna        ;# antenna model
set opt(ifqlen)         50                     ;# max packet in ifq
set opt(adhocRouting)   DSDV                       ;# routing protocol

set opt(x)        1100               ;# X dimension of the topography
set opt(y)        1100               ;# Y dimension of the topography

Mac/802_11 set basicRate_ 11Mb
Mac/802_11 set dataRate_ 11Mb
Mac/802_11 set bandwidth_ 11Mb

#defines function for flushing and closing files
proc finish {} {
        global ns tf output_dir nb_mn nf
        $ns flush-trace
        close $tf
    close $nf
    exec nam wimax1.nam &
    exit 0
}

#create the simulator
set ns [new Simulator]
set nf [open wimax1.nam w]

$ns namtrace-all $nf
$ns use-newtrace

#create the topography
set topo [new Topography]
$topo load_flatgrid $opt(x) $opt(y)
puts "Topology created"

#open file for trace
set tf [open $output_dir/out.res w]
$ns trace-all $tf
puts "Output file configured"

# set up for hierarchical routing (needed for routing over a basestation)
puts "start hierarchical addressing"
$ns node-config -addressType hierarchical
AddrParams set domain_num_ 2                     ;# domain number
lappend cluster_num 1 1                        ;# cluster number for each domain
AddrParams set cluster_num_ $cluster_num
lappend eilastlevel 1 [expr ($nb_mn+1)]         ;# number of nodes for each cluster (1 for sink and one for mobile nodes + base station
AddrParams set nodes_num_ $eilastlevel
puts "Configuration of hierarchical addressing done"

# Create God
create-god [expr ($nb_mn + 2)]                ;# nb_mn + 2 (base station and sink node)
puts "God node created"

#creates the sink node in first addressing space.
set sinkNode [$ns node 0.0.0]
#provide some co-ord (fixed) to base station node
$sinkNode set X_ 50.0
$sinkNode set Y_ 50.0
$sinkNode set Z_ 0.0
puts "sink node created"

#creates the Access Point (Base station)
$ns node-config -adhocRouting $opt(adhocRouting) \
                 -llType $opt(ll) \
                 -macType Mac/802_16/BS \
                 -ifqType $opt(ifq) \
                 -ifqLen $opt(ifqlen) \
                 -antType $opt(ant) \
                 -propType $opt(prop)    \
                 -phyType $opt(netif) \
                 -channel [new $opt(chan)] \
                 -topoInstance $topo \
                 -wiredRouting ON \
                 -agentTrace ON \
                 -routerTrace ON \
                 -macTrace ON  \
                 -movementTrace OFF
puts "Configuration of base station"

set bstation [$ns node 1.0.0] 
$bstation random-motion 0
puts "Base-Station node created"
#provide some co-ord (fixed) to base station node
$bstation set X_ 550.0
$bstation set Y_ 550.0
$bstation set Z_ 0.0
[$bstation set mac_(0)] set-channel 0

# creation of the mobile nodes
$ns node-config -macType Mac/802_16/SS \
                -wiredRouting OFF \
                -macTrace ON                  ;# Mobile nodes cannot do routing.
for {set i 0} {$i < $nb_mn} {incr i} {
    set wl_node_($i) [$ns node 1.0.[expr $i + 1]]     ;# create the node with given @.   
    $wl_node_($i) random-motion 0            ;# disable random motion
    $wl_node_($i) base-station [AddrParams addr2id [$bstation node-addr]] ;#attach mn to basestation
    #compute position of the node
        $wl_node_($i) set X_ [expr 340.0]

    $wl_node_($i) set Y_ 550.0
    $wl_node_($i) set Z_ 0.0
        $ns at 0 "$wl_node_($i) setdest 1060.0 550.0 1.0"
        puts "wireless node $i created ..."            ;# debug info

        [$wl_node_($i) set mac_(0)] set-channel 0
        [$wl_node_($i) set mac_(0)] set-diuc 7   ;# Change the node profile here (7=64QAM_3_4)

    #create source traffic
    #Create a UDP agent and attach it to node n0
    set udp_($i) [new Agent/UDP]
    $udp_($i) set packetSize_ 1500
    $ns attach-agent $wl_node_($i) $udp_($i)

    # Create a CBR traffic source and attach it to udp0
    set cbr_($i) [new Application/Traffic/CBR]
    $cbr_($i) set packetSize_ $packet_size
    $cbr_($i) set interval_ $gap_size
    $cbr_($i) attach-agent $udp_($i)

    #create an sink into the sink node

    # Create the Null agent to sink traffic
    set null_($i) [new Agent/Null]
    $ns attach-agent $sinkNode $null_($i)
   
    # Attach the 2 agents
    $ns connect $udp_($i) $null_($i)
}

# create the link between sink node and base station
$ns duplex-link $sinkNode $bstation 100Mb 1ms DropTail

# Traffic scenario: if all the nodes start talking at the same
# time, we may see packet loss due to bandwidth request collision
set diff 0.0
for {set i 0} {$i < $nb_mn} {incr i} {
    $ns at [expr $traffic_start+$i*$diff] "$cbr_($i) start"
    $ns at [expr $traffic_stop+$i*$diff] "$cbr_($i) stop"
}

$ns at $simulation_stop "finish"
#$ns at $simulation_stop "$ns halt"
# Run the simulation
puts "Running simulation for $nb_mn mobile nodes..."
$ns run
puts "Simulation done."