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Mobile Networking in ns

Speaker ： Mark Yang

93.03.09

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Abstract

Basic wireless model Pure wireless LANs Multihop ad-hoc networks

Extensions wireless model Wired-cum-wireless MobileIP

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Basic – creating wireless topology

set topo [new Topography]

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

where opt(x) and opt(y) are the boundaries used in simulation.

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Basic – node config

$ns_ node-config -adhocRouting DSDV or DSR or TORA or AODV \-topoInstance $topo \-addressType hierarchical \-wiredRouting ON \-mobileIP ON \-llType LL \-macType Mac/802_11 \-antType Antenna/OmniAntenna \-propType Propagation/TwoRayGround \-phyType Phy/WirelessPhy \-channelType Channel/WirelessChannel \-ifqType Queue/DropTail/PriQueue \-ifqLen <integer> \-agentTrace ON or OFF \-routerTrace ON or OFF \-macTrace ON or OFF \-movementTrace ON or OFF

Wired-cum-wirelessMobileIP

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Basic – node movement

$node set X_ <x1>

$node set Y_ <y1>

$node set Z_ <z1>

Start-position

$ns at $time $node setdest <x2> <y2> <speed>

Future destinations

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Basic – new traces

$ns use-newtrace

s -t 0.029290548 -Hs 1 -Hd -1 -Ni 1 -Nx 390.00 -Ny 385.00 -Nz 0.00

-Ne -1.000000 -Nl RTR -Nw --- -Ma 0 -Md 0 -Ms 0 -Mt 0 -Is 1.255

-Id -1.255 -It message -Il 32 -If 0 -Ii 0 -Iv 32

event s,r,d,f

time

id for next hop

next hopdestination

node id

node’s x-coordinate

node’s z-coordinate

node’s y-coordinate

nodeenergy level

trace level

reason for this event

duration

dest’s ethernet addr

source’s ethernet addr

ethernet type

source’s addr.port

dest’s addr.port

packet type

packet size

flow id

unique id

ttl value -H: next hop info-N: node info-M: MAC level info-I: IP level info

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Basic – traffic scenario generator

source pattern-file

ns cbrgen.tcl -type cbr -nn 10 -seed 1.0 -mc 8 -rate 4.0 > pattern-file

ns cbrgen.tcl -type tcp -nn 25 -seed 0.0 -mc 8 > pattern-file

# nodes: 10, max conn: 8, send rate: 0.25, seed: 1.0# 1 connecting to 2 at time 2.5568388786897245set udp_(0) [new Agent/UDP]$ns_ attach-agent $node_(1) $udp_(0)set null_(0) [new Agent/Null]$ns_ attach-agent $node_(2) $null_(0)set cbr_(0) [new Application/Traffic/CBR]$cbr_(0) set packetSize_ 512$cbr_(0) set interval_ 0.25$cbr_(0) set random_ 1$cbr_(0) set maxpkts_ 10000$cbr_(0) attach-agent $udp_(0)$ns_ connect $udp_(0) $null_(0)$ns_ at 2.5568388786897245 "$cbr_(0) start“ :

Introduce random “noise” in the scheduled departure time.

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Basic – movement scenario generator

source pattern-file

~ns/indep-utils/cmu-scen-gen/setdest./setdest -n 3 -p 2.0 -s 20.0 -t 300 -x 600 -y 600 > pattern-file

set god_ [God instance]$ns_ at 50.000000000000 "$node_(2) setdest 369.463244915743 170.519203111152 3.371785899154”$ns_ at 51.000000000000 "$node_(1) setdest 221.826585497093 80.855495003839 14.909259208114”$ns_ at 33.000000000000 "$node_(0) setdest 89.663708107313 283.494644426442 19.153832288917”$god_ set-dist 1 2 2$god_ set-dist 0 2 3$god_ set-dist 0 1 1$node_(2) set Z_ 0.000000000000$node_(2) set Y_ 199.373306816804$node_(2) set X_ 591.256560093833$node_(1) set Z_ 0.000000000000$node_(1) set Y_ 345.357731779204$node_(1) set X_ 257.046298323157$node_(0) set Z_ 0.000000000000$node_(0) set Y_ 239.438009831261$node_(0) set X_ 83.364418416244 :

The shortest path between node 1 and node 2 is 2 hops.

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Extensions – wired-cum-wireless

$ns_ node-config -addressType hierarchicalAddrParams set domain_num_ 2lappend cluster_num 2 1AddrParams set cluster_num_ $cluster_numlappend eilastlevel 1 1 4AddrParams set nodes_num_ $eilastlevel

set temp {0.0.0 0.1.0}for {set i 0} {$i < $num_wired_nodes} {incr i} { set W($i) [$ns_ node [lindex $temp $i]] }

$ns_ node-config -wiredRouting ONset temp {1.0.0 1.0.1 1.0.2 1.0.3}set BS(0) [$ns_ node [lindex $temp 0]]$BS(0) random-motion 0

$ns_ node-config -wiredRouting OFFfor {set j 0} {$j < $opt(nn)} {incr j} { set node_($j) [ $ns_ node [lindex $temp [expr $j+1]] ] $node_($j) base-station [AddrParams addr2id [$BS(0) node-addr]] }

W(0)

W(1)

BS(0)

node_(1)node_(0)

node_(2)

domain 0

domain 1

cluster 0

cluster 1

cluster 0

0,0,0

0,1,0

1,0,0

1,0,1 1,0,2

1,0,3

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Extensions – MobileIP

$ns_ node-config -mobileIP ON

set HA [$ns_ node 1.0.0]set FA [$ns_ node 2.0.0]$HA random-motion 0$FA random-motion 0

set MH [$ns_ node 1.0.1]set node_(0) $MHset HAaddress [AddrParams addr2id [$HA node-addr]][$MH set regagent_] set home_agent_ $HAaddress

W(0)

W(1)

HA

MH

FA