diffusion-100.tcl

无线个域网（WPAN）就是在个人周围空间形成的无线网络

#Directed Diffusion in a 100 node wireless topology

# ==================================================================
# Define options
# ===================================================================
set opt(chan)		Channel/WirelessChannel
set opt(prop)		Propagation/TwoRayGround
set opt(netif)		Phy/WirelessPhy
set opt(mac)		Mac/802_11
set opt(ifq)		Queue/DropTail/PriQueue
set opt(ll)		LL
set opt(ant)            Antenna/OmniAntenna
set opt(x)		500	;# X dimension of the topography
set opt(y)		500     ;# Y dimension of the topography
set opt(ifqlen)		50	;# max packet in ifq
set opt(nn)		100	;# number of nodes
set opt(seed)		0.0
set opt(stop)		100	;# simulation time
#set opt(prestop)        999       ;# time to prepare to stop
set opt(tr)		"diffusion100.tr"	;# trace file
set opt(nam)            "diffusion100.nam"  ;# nam file
set opt(adhocRouting)   Directed_Diffusion
set opt(traf)		"diffusion-traf100.tcl"      ;# traffic file
set opt(move)           "scen-100-2-5-1000-500-500-test" ;#node movement file
# ==================================================================
LL set mindelay_		50us
LL set delay_			25us
LL set bandwidth_		0	;# not used

Queue/DropTail/PriQueue set Prefer_Routing_Protocols    1

# unity gain, omni-directional antennas
# set up the antennas to be centered in the node and 1.5 meters above it
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

# Initialize the SharedMedia interface with parameters to make
# it work like the 914MHz Lucent WaveLAN DSSS radio interface
Phy/WirelessPhy set CPThresh_ 10.0
Phy/WirelessPhy set CSThresh_ 1.559e-11
Phy/WirelessPhy set RXThresh_ 3.652e-10
Phy/WirelessPhy set Rb_ 2*1e6
Phy/WirelessPhy set Pt_ 0.2818
Phy/WirelessPhy set freq_ 914e+6 
Phy/WirelessPhy set L_ 1.0

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

#
# Initialize Global Variables
#

puts "starting setup.... time: [clock format [clock seconds] -format %X]\n"

set ns_		[new Simulator] 
set topo	[new Topography]

set tracefd	[open $opt(tr) w]
$ns_ trace-all $tracefd

#set nf [open $opt(nam) w]
#$ns_ namtrace-all-wireless $nf $opt(x) $opt(y)

#$ns_ use-newtrace

$topo load_flatgrid $opt(x) $opt(y)

set god_ [create-god $opt(nn)]

# log the mobile nodes movements if desired

#if { $opt(lm) == "on" } {
#    log-movement
#}

#global node setting

$ns_ node-config -adhocRouting $opt(adhocRouting) \
		 -llType $opt(ll) \
		 -macType $opt(mac) \
		 -ifqType $opt(ifq) \
		 -ifqLen $opt(ifqlen) \
		 -antType $opt(ant) \
		 -propType $opt(prop) \
		 -phyType $opt(netif) \
		 -channelType $opt(chan) \
		 -topoInstance $topo \
		 -agentTrace ON \
                 -routerTrace ON \
                 -macTrace ON
                  

#  Create the specified number of nodes [$opt(nn)] and "attach" them
#  to the channel. 

for {set i 0} {$i < $opt(nn) } {incr i} {
	set node_($i) [$ns_ node $i]
        $node_($i) color black
	$node_($i) random-motion 0		;# disable random motion
        $god_ new_node $node_($i)
}

puts "Loading movement pattern..."
source $opt(move)

puts "Loading traffic file.."
source $opt(traf)

# Define node initial position in nam

for {set i 0} {$i < $opt(nn)} {incr i} {

    # 20 defines the node size in nam, must adjust it according to your scenario
    # The function must be called after mobility model is defined
    
    $ns_ initial_node_pos $node_($i) 20
}

#
# Tell nodes when the simulation ends
#
for {set i 0} {$i < $opt(nn) } {incr i} {
    $ns_ at $opt(stop).000000001 "$node_($i) reset";
}
# tell nam the simulation stop time
#$ns_ at  $opt(stop)	"$ns_ nam-end-wireless $opt(stop)"

$ns_ at  $opt(stop).000000001 "puts \"NS EXITING...\" ; $ns_ halt"

puts $tracefd "Directed Diffusion:"
puts $tracefd "M 0.0 nn $opt(nn) x $opt(x) y $opt(y)"
puts $tracefd "M 0.0 prop $opt(prop) ant $opt(ant)"

puts "Finished setup; Starting Simulation...\
	time: [clock format [clock seconds] -format %X]"
$ns_ run