wireless-mitf.tcl

ns2下用于802.11的无线传输模型的代码 增加了基于信噪比计算差错率等功能

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# $Header: /nfs/jade/vint/CVSROOT/ns-2/tcl/ex/wireless-mitf.tcl,v 1.2 2000/08/30 00:10:45 haoboy Exp $
#
# Simple demo script for the new APIs to support multi-interface for 
# wireless node.
#
# Define options
# Please note: 
# 1. you can still specify "channelType" in node-config right now:
# set val(chan)           Channel/WirelessChannel
# $ns_ node-config ...
#		 -channelType $val(chan)
#                  ...
# But we recommend you to use node-config in the way shown in this script
# for your future simulations.  
# 
# 2. Because the ad-hoc routing agents do not support multiple interfaces
#    currently, this script can't generate anything interesting if you config
#    the interfaces of node 1 and 2 on different channels
#   
#     --Xuan Chen, USC/ISI, July 21, 2000
#
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(nn)             2                          ;# number of mobilenodes
set val(rp)             DSDV                       ;# routing protocol
#set val(rp)             DSR                       ;# routing protocol
set val(x)		500
set val(y)		500

#Added by Wu Xiuchao for ErrorModel80211
# the unit is dBm

ErrorModel80211 noise1 -94
ErrorModel80211 noise2 -91
ErrorModel80211 noise55 -87
ErrorModel80211 noise11 -82
ErrorModel80211 shortpreamble	1
ErrorModel80211 LoadBerSnrFile ber_snr.txt

#end by Wu Xiuchao

Antenna/OmniAntenna set Gt_     1
Antenna/OmniAntenna set Gr_     1
Phy/WirelessPhy set L_ 1.0
Phy/WirelessPhy set freq_ 2.472e9

Phy/WirelessPhy set bandwidth_ 11Mb

Phy/WirelessPhy set Pt_ 0.031622777
Phy/WirelessPhy set CPThresh_ 6.0
Phy/WirelessPhy set CSThresh_ 5.011872e-12
Phy/WirelessPhy set RXThresh_ 6.68786e-11


Mac/802_11 set dataRate_ 11Mb
Mac/802_11 set basicRate_ 1Mb

Agent/TCP set packetSize_ 500

# Initialize Global Variables
set ns_		[new Simulator]
set tracefd     [open wireless_mitf.tr w]
$ns_ trace-all $tracefd

set namtrace [open wireless_mitf.nam w]
$ns_ namtrace-all-wireless $namtrace $val(x) $val(y)

# set up topography object
set topo       [new Topography]

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

# Create God
create-god $val(nn)

# New API to config node: 
# 1. Create channel (or multiple-channels);
# 2. Specify channel in node-config (instead of channelType);
# 3. Create nodes for simulations.

# Create channel #1 and #2
set chan_1_ [new $val(chan)]
set chan_2_ [new $val(chan)]

# Create node(0) "attached" to channel #1

# configure node, please note the change below.
$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) \
		-topoInstance $topo \
		-agentTrace ON \
		-routerTrace ON \
		-macTrace ON \
		-movementTrace OFF \
		-channel $chan_1_ 

set node_(0) [$ns_ node]

# node_(1) can also be created with the same configuration, or with a different
# channel specified.
# Uncomment below two lines will create node_(1) with a different channel.
#  $ns_ node-config \
#		 -channel $chan_2_ 
set node_(1) [$ns_ node]

$node_(0) random-motion 0
$node_(1) random-motion 0

for {set i 0} {$i < $val(nn)} {incr i} {
	$ns_ initial_node_pos $node_($i) 20
}

#
# Provide initial (X,Y, for now Z=0) co-ordinates for mobilenodes
#
$node_(0) set X_ 5.0
$node_(0) set Y_ 2.0
$node_(0) set Z_ 0.0

$node_(1) set X_ 8.0
$node_(1) set Y_ 5.0
$node_(1) set Z_ 0.0

#
# Now produce some simple node movements
# Node_(1) starts to move towards node_(0)
#
$ns_ at 3.0 "$node_(1) setdest 50.0 40.0 25.0"
$ns_ at 3.0 "$node_(0) setdest 48.0 38.0 5.0"

# Node_(1) then starts to move away from node_(0)
$ns_ at 20.0 "$node_(1) setdest 490.0 480.0 30.0" 

# Setup traffic flow between nodes
# TCP connections between node_(0) and node_(1)

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
set ftp [new Application/FTP]
$ftp attach-agent $tcp
$ns_ at 3.0 "$ftp start" 

#
# Tell nodes when the simulation ends
#
for {set i 0} {$i < $val(nn) } {incr i} {
    $ns_ at 30.0 "$node_($i) reset";
}
$ns_ at 30.0 "stop"
$ns_ at 30.01 "puts \"NS EXITING...\" ; $ns_ halt"
proc stop {} {
    global ns_ tracefd
    $ns_ flush-trace
    close $tracefd
}

puts "Starting Simulation..."
$ns_ run