test_transmission_range.tcl

ns2 wireless仿真 tcl脚本实例 很有参考价值

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) DumbAgent

set ns [new Simulator]
Antenna/OmniAntenna set X_ 0
Antenna/OmniAntenna set Y_ 0
Antenna/OmniAntenna set Z_ 1.5 
Antenna/OmniAntenna set Gt_ 1.0
Antenna/OmniAntenna set Gr_ 1.0

Phy/WirelessPhy set CPThresh_ 10.0
Phy/WirelessPhy set CSThresh_ 1.559e-11
Phy/WirelessPhy set RXThresh_ 2.62861e-9
Phy/WirelessPhy set bandwidth_ 2e6
Phy/WirelessPhy set Pt_ 0.281838
Phy/WirelessPhy set freq_ 2.472e+9
Phy/WirelessPhy set L_ 1.0  

set f [open test.tr w]
$ns trace-all $f
$ns eventtrace-all
set nf [open test.nam w]
$ns namtrace-all-wireless $nf 500 500

set topo       [new Topography]
$topo load_flatgrid 500 500
create-god 2
set chan [new $val(chan)]

$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 $chan \
                -topoInstance $topo \
                -agentTrace ON \
                -routerTrace OFF \
                -macTrace ON \
                -movementTrace OFF 
 
for {set i 0} {$i < 2} {incr i} {
        set node_($i) [$ns node]
        $node_($i) random-motion 0
}

$node_(0) set X_ 30.0
$node_(0) set Y_ 30.0
$node_(0) set Z_ 0.0
$node_(1) set X_ 129.5
$node_(1) set Y_ 30.0
$node_(1) set Z_ 0.0

set udp [new Agent/mUDP]
$udp set_filename sd
$udp set mynode_handle $node_(0)
$udp set mynode_id [$node_(0) id]
$ns attach-agent $node_(0) $udp
set null [new Agent/mUdpSink]
$null set_filename rd
$ns attach-agent $node_(1) $null
$ns connect $udp $null
set cbr [new Application/Traffic/CBR]
$cbr attach-agent $udp
$cbr set type_ CBR
$cbr set packet_size_ 1000
$cbr set rate_ 1Mb
$cbr set random_ false

#$ns at 0.0 "$cbr start"
#$ns at 15.0 "$cbr stop"
#$ns at  1.0 "$udp ifqlen?"
#$ns at  1.5 "$udp ifqlen?"
#$ns at  2.0 "$udp ifqlen?"
#$ns at 14.0 "$udp ifqlen?"

#set n0_ifq [$node_(0) set ifq_(0)]
#set queuechan [open qlen.tr w]
#$n0_ifq trace curq_
#$n0_ifq attach $queuechan

for {set i 0} {$i < 2} {incr i} {
        $ns initial_node_pos $node_($i) 30
        $ns at 20.0 "$node_($i) reset";
}

$ns at 20.0 "finish"
$ns at 20.1 "puts \"NS EXITING...\"; $ns halt"

proc finish {} {
        global ns f nf val
        $ns flush-trace
        close $f
        close $nf
}

puts "Starting Simulation..."
$ns run