www.pudn.com > ns-example.rar > simple-wireless.tcl, change:2005-10-20,size:5110b

# Copyright (c) 1997 Regents of the University of California. 
# All rights reserved. 
# 
# Redistribution and use in source and binary forms, with or without 
# modification, are permitted provided that the following conditions 
# are met: 
# 1. Redistributions of source code must retain the above copyright 
#    notice, this list of conditions and the following disclaimer. 
# 2. Redistributions in binary form must reproduce the above copyright 
#    notice, this list of conditions and the following disclaimer in the 
#    documentation and/or other materials provided with the distribution. 
# 3. All advertising materials mentioning features or use of this software 
#    must display the following acknowledgement: 
#      This product includes software developed by the Computer Systems 
#      Engineering Group at Lawrence Berkeley Laboratory. 
# 4. Neither the name of the University nor of the Laboratory may be used 
#    to endorse or promote products derived from this software without 
#    specific prior written permission. 
# 
# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
# SUCH DAMAGE. 
# 
# simple-wireless.tcl 
# A simple example for wireless simulation 
 
# ====================================================================== 
# Define options 
# ====================================================================== 
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 
 
# ====================================================================== 
# Main Program 
# ====================================================================== 
 
 
# 
# Initialize Global Variables 
# 
set ns_		[new Simulator] 
set tracefd     [open simple.tr w] 
$ns_ trace-all $tracefd 
 
# set up topography object 
set topo       [new Topography] 
 
$topo load_flatgrid 500 500 
 
# 
# Create God 
# 
create-god $val(nn) 
 
# 
#  Create the specified number of mobilenodes [$val(nn)] and "attach" them 
#  to the channel.  
#  Here two nodes are created : node(0) and node(1) 
 
# configure node 
 
        $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) \ 
			 -channelType $val(chan) \ 
			 -topoInstance $topo \ 
			 -agentTrace ON \ 
			 -routerTrace ON \ 
			 -macTrace OFF \ 
			 -movementTrace OFF			 
			  
	for {set i 0} {$i  $val(nn) } {incr i} { 
		set node_($i) [$ns_ node]	 
		$node_($i) random-motion 0		;# disable random motion 
	} 
 
# 
# 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_ 390.0 
$node_(1) set Y_ 385.0 
$node_(1) set Z_ 0.0 
 
# 
# Now produce some simple node movements 
# Node_(1) starts to move towards node_(0) 
# 
$ns_ at 50.0 "$node_(1) setdest 25.0 20.0 15.0" 
$ns_ at 10.0 "$node_(0) setdest 20.0 18.0 1.0" 
 
# Node_(1) then starts to move away from node_(0) 
$ns_ at 100.0 "$node_(1) setdest 490.0 480.0 15.0"  
 
# 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 
$ns_ at 10.0 "$ftp start"  
 
# 
# Tell nodes when the simulation ends 
# 
for {set i 0} {$i  $val(nn) } {incr i} { 
    $ns_ at 150.0 "$node_($i) reset"; 
} 
$ns_ at 150.0 "stop" 
$ns_ at 150.01 "puts \"NS EXITING...\" ; $ns_ halt" 
proc stop {} { 
    global ns_ tracefd 
    $ns_ flush-trace 
    close $tracefd 
} 
 
puts "Starting Simulation..." 
$ns_ run