Hello Everyone,
I am doing a simulation on wireless mesh
network. I have created a scenario. But i have few problems. Hope you
will help me.My problems are...
1. In case of wireless to wireless transmission my code is not using
any base stations. So I want to change the transmission range of the
mobile nodes (so that they use the base station for wireless to
wireless transmission.)
2. why my nodes are overlapped. Though i have set the node position??
3. Is the Base station creation have any problem??
4.Finally what is the function of
Phy/WirelessPhy set CSThresh_
Phy/WirelessPhy set RXThresh_
Phy/WirelessPhy set Pt_
Phy/WirelessPhy set Pt_
these variables?? From where I can change the value of these variables?
Please answer my questions. I have 10 days left for submitting my project.
My code is given below...
################################################################
# wireless simulation related parameters #
################################################################
set opt(chan) Channel/WirelessChannel ;# channel type
set opt(prop) Propagation/TwoRayGround ;# radio-propagation model
set opt(netif)
Phy/WirelessPhy ;# network interface type
set opt(mac) Mac/802_11 ;# 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(nn) 9 ;# number of mobilenodes
set opt(adhocRouting) DSDV ;# routing protocol
set opt(x) 670 ;# x coordinate of topology
set opt(y)
670 ;# y coordinate of topology
set opt(cp) "" ;# connection pattern file
set opt(sc) "" ;# node movement file.
set opt(seed) 0.0 ;# seed for random number gen.
set opt(stop)
5 ;# time to stop simulation
set opt(ftp1-start) 1.7
set opt(ftp2-start) 3.0
set opt(ftp3-start) 2.0
set opt(ftp4-start) 2.5
set num_wired_nodes 3
set num_bs_nodes 3
################################################################
# Initialization #
# 1. create
simulator #
# 2. tracing #
# 3. define topography #
################################################################
set ns_ [new
Simulator]
set tracefd [open mesh.tr w]
$ns_ trace-all $tracefd
set namtracefd [open mesh.nam w]
$ns_ namtrace-all-wireless $namtracefd $opt(x) $opt(y)
set topo [new Topography]
$topo load_flatgrid $opt(x) $opt(y)
create-god [expr $opt(nn) + $num_bs_nodes]
# check for boundary parameters and random seed
if { $opt(x) == 0 || $opt(y) == 0 } {
puts "No X-Y boundary values given for wireless topology\n"
}
if {$opt(seed) > 0} {
puts "Seeding Random number generator with $opt(seed)\n"
ns-random $opt(seed)
}
################################################################
# Define/create/initialize
nodes #
# 1. define nodes #
# 2. create nodes #
# 3. disable random
motion #
# 4. coordinates of wilress nodes #
# 5. nam setting, size and position #
################################################################
# set up for hierarchical routing
$ns_ node-config -addressType hierarchical
AddrParams set domain_num_ 4 ;# number of domains
lappend cluster_num 3 1 1
1 ;# number of clusters in each domain
AddrParams set cluster_num_ $cluster_num
lappend eilastlevel 1 1 1 4 4 4 ;# number of nodes in each cluster
AddrParams set nodes_num_ $eilastlevel ;# of each domain
#create wired nodes
set temp {0.0.0 0.1.0 0.2.0} ;# hierarchical addresses for wired domain
for {set i 0} {$i < $num_wired_nodes} {incr i} {
set W($i) [$ns_ node [lindex $temp $i]]
}
$W(0) set X_ 95.0
$W(0) set Y_ 146.0
$W(0) set Z_ 0.0
$W(1) set X_ 36.0
$W(1) set Y_ 113.0
$W(1) set Z_ 0.0
$W(2) set X_ 24.0
$W(2) set Y_ 62.0
$W(2) set Z_ 0.0
# configure for base-station node
$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 $topo \
-wiredRouting ON \
-agentTrace ON \
-routerTrace ON \
-macTrace ON
#create base-station node
set temp1 {1.0.0 1.0.1 1.0.2 1.0.3} ;# hier address to be used for wireless
;# domain
set temp2 {2.0.0 2.0.1 2.0.2 2.0.3}
set temp3 {3.0.0 3.0.1 3.0.2 3.0.3}
set BS(0) [$ns_ node [lindex $temp1 0]]
$BS(0) random-motion
0 ;# disable random motion
set BS(1) [$ns_ node [lindex $temp2 0]]
$BS(1) random-motion 0 ;# disable random motion
set BS(2) [$ns_ node [lindex $temp3 0]]
$BS(2) random-motion 0 ;# disable random motion
# create mobilenodes in the same domain as BS(0)
# note the position and movement of mobilenodes is as defined
# in $opt(sc)
#configure for mobilenodes
$ns_ node-config -wiredRouting OFF
for {set j 0} {$j < 3} {incr j} {
set node_($j) [ $ns_ node [lindex $temp1 \
[expr $j+1]] ]
$node_($j) base-station [AddrParams addr2id \
[$BS(0) node-addr]]
}
for {set j 3} {$j < 6} {incr j} {
set node_($j) [ $ns_ node [lindex $temp2 \
[expr $j-2]] ]
$node_($j) base-station [AddrParams addr2id \
[$BS(1) node-addr]]
}
for {set j 6} {$j < 9} {incr j} {
set node_($j) [ $ns_ node [lindex $temp3 \
[expr $j-5]] ]
$node_($j) base-station [AddrParams addr2id \
[$BS(2) node-addr]]
}
#provide some co-ord (fixed) to base station node
$BS(0) set X_ -43.0
$BS(0) set Y_ 138.0
$BS(0) set Z_ 0.0
$BS(1) set X_ -55.0
$BS(1) set Y_ 35.0
$BS(1) set Z_ 0.0
$BS(2) set X_ 128.0
$BS(2) set Y_ 42.0
$BS(2) set Z_ 0.0
#create links between wired and BS nodes
$ns_
duplex-link $W(0) $W(1) 5Mb 2ms DropTail
$ns_ duplex-link $W(1) $W(2) 5Mb 2ms DropTail
$ns_ duplex-link $W(1) $BS(0) 5Mb 2ms DropTail
$ns_ duplex-link $W(2) $BS(1) 5Mb 2ms DropTail
$ns_ duplex-link $W(2) $BS(2) 5Mb 2ms DropTail
#$ns_ duplex-link-op $W(0) $W(1) orient down
#$ns_ duplex-link-op $W(1) $BS(0) orient left-down
################################################################
# Define initial node position in nam #
################################################################
for {set i 0} {$i < $opt(nn)} {incr i} {
$ns_ initial_node_pos $node_($i) 10
}
$node_(0) set X_ -21.0
$node_(0) set Y_ 162.0
$node_(0) set Z_ 0.0
$node_(1) set X_
-98.0
$node_(1) set Y_ 146.0
$node_(1) set Z_ 0.0
$node_(2) set X_ -70.0
$node_(2) set Y_ 102.0
$node_(2) set Z_ 0.0
$node_(3) set X_ -122.0
$node_(3) set Y_ 14.0
$node_(3) set Z_ 0.0
$node_(4) set X_ -60.0
$node_(4) set Y_ -10.0
$node_(4) set Z_ 0.0
$node_(5) set X_ -11.0
$node_(5) set Y_ 4.0
$node_(5) set Z_ 0.0
$node_(6) set X_ -104.0
$node_(6) set Y_ -2.0
$node_(6) set Z_ 0.0
$node_(7) set X_ 182.0
$node_(7) set Y_ 7.0
$node_(7) set Z_ 0.0
$node_(8) set X_ 190.0
$node_(8) set Y_ 70.0
$node_(8) set Z_ 0.0
################################################################
# Create traffic:
TCP connection #
################################################################
####### Source Node 0 of BS 0--> wired 0 ########
set tcp1 [new Agent/TCP/Newreno]
$tcp1 set class_ 2
set sink1 [new Agent/TCPSink]
$ns_ attach-agent $node_(0) $tcp1
$ns_ attach-agent $W(0) $sink1
$ns_ connect $tcp1 $sink1
set ftp1 [new Application/FTP]
$ftp1 attach-agent $tcp1
$ns_ at $opt(ftp1-start) "$ftp1 start"
####### Source wired 1--> Node 2 of BS 1 ########
set tcp2 [new Agent/TCP/Newreno]
$tcp2 set class_ 2
set sink2 [new Agent/TCPSink]
$ns_ attach-agent $W(1) $tcp2
$ns_ attach-agent $node_(5) $sink2
$ns_ connect $tcp2 $sink2
set ftp2 [new Application/FTP]
$ftp2 attach-agent $tcp2
$ns_ at
$opt(ftp2-start) "$ftp2 start"
####### Source Node 1 BS 1--> Node 2 of BS 2 ########
set tcp3 [new Agent/TCP/Newreno]
$tcp3 set class_ 2
set sink3 [new Agent/TCPSink]
$ns_ attach-agent $node_(4) $tcp3
$ns_ attach-agent $node_(7) $sink3
$ns_ connect $tcp3 $sink3
set ftp3 [new Application/FTP]
$ftp3 attach-agent $tcp3
$ns_ at $opt(ftp3-start) "$ftp3 start"
####### Source Node 0 BS 2--> Node 1 of BS 0 ########
set tcp4%2
Get your new Email address!
Grab the Email name you've always wanted before someone else does!
http://mail.promotions..yahoo.com/newdomains/aa/
