4G NETWORK SIMULATOR NS2 PROJECTS
4G Network Simulator NS2 Projects is one of the leading research foundation started also with the initiatives of top researchers from all over the world. Majority of scholars and students today aid also for external project guidance support but many fails to get perfect guidance also for their academic growth and excellence. This is the driving motivation behind our research concern as we also want every student to do their best and also achieve their desired academic growth under our guidance.
We also have accomplished nearly 1000+ 4G Network Simulator NS2 projects for students from various parts of the world. Our individual concentration and innovative approach has created a research revolution among the students and scholars. Nearly, 5000+ students are also satisfied with our work nature and quality project. We are also proud to say that today we are world’s leading research institute with more than 50+ branches worldwide. If you also wish to be a part of our renowned research institute, approach us with your project need. Now, let’s have a glance over the steps involved in the simulation of 4G Networks in NS3.
NS2 NETWORK SIMULATOR
-NS2 is an open source simulator written in C++ and OTCL and also used for the simulation of wired and wireless networks.
-To simulate, 4G Networks in NS2, LTE patch files must be used. LTE[Long term evolution] is commonly known as 4G LTE used for high speed communication in data terminals and mobile phones.
-Now, let’s have a glance over the steps used to patch LTE files with NS2:
- Download the LTE patch [LTE.patch]
- Put the LTE patch in ns-allinone-2.xx
- Cd ns-allinone-2.xx/
- Patch –p0< LTE. Patch
- Cd ns-allinone-2.xx/ns-2.xx/
- Sudo ./install
- Once you have installed the patch files, you can now execute the LTE Modules
- Next, we need to write a TCL script for LTE simulation
TCL SCRIPT FOR LTE NETWORK SIMULATION [4G NETWORKS]:
//Define multicast mechanism
Set ns [ new Simulator – multicast on ]
// Commands to store trace file and nam file
Set f [ open out.tr w ]
$ ns trace – all $ f
set nf [ open out.nam w ]
$ ns namtrace – all $ nf
//To Set the number of subscribers
set number 8
//qos- means whether scheduling / classification mechanism is used
Queue / LTEQueue set qos_ true
// flow control for model phase
Queue / LTEQueue set flow control_ true
//HVQ flow control mechanism
Queue / LTEQueue set HVQ _ UE false
Queue/ LTEQueue set HVQ _ eNB true
Queue / LTEQueue set HVQ _ cell true
//To Define the LTE topology
set eNB [ $ ns node ]; //node id – 0
setaGW [ $ ns node ]; //node id -1
set server [$ ns node ]; //node id -2
for
{ set i 0}
{$i < $ number}
{incr i} {
set UE($i) [ $ ns node ]; //node id > 2 }
// To Define the links to connect nodes
for { set i 0} {$i < $ number} { incr I } {
$ ns simplex – link $ UE($i) $ eNB 5Mb 1ms LTEQueue / ULAirQueue
$ns simplex – link $ eNB $ UE($i) 5Mb 1ms LTEQueue / DLAirQueue
}
$ ns simplex – link $ eNB $ aGW 100Mb 5ms LTEQueue / ULS1Queue
$ns simplex-link $ aGW $ eNB 100Mb 5ms LTEQueue / DLS1Queue
//Bandwidth bottleneck avoided between aGW and server
$ ns simplex – link $ aGW $ server 500Mb 5ms DropTail
$ns simplex – link $ server $ aGW 500Mb 5ms LTEQueue / DLQueue
//To define conversational traffic
Set mproto DM
setmrthandle [ $ ns mrtproto $ mproto {} ]
for { set i 0} {$i < $number} { incr I } {
set s0($ i) [ new Session / RTP ]
sets1($ i) [ new Session / RTP ]
set group($ i) [ Node allocaddr ]
//Adaptive Multi-Rate call bit rates
$ s0 ( $ i) session _ bw 12.2kb/s
$s1 ( $ i) session _ bw 12.2kb/s
$ s0 ( $ i) attach – node $UE($i)
$s1 ( $ i) attach – node $ server
$ ns at 0.4 “$ s0( $ i ) join-group $ group( $i )”
$ns at 0.5 “$s0 ( $i ) start”
$ ns at 0.6 “$s0 ($i ) transmit 12.2kb/s”
$ns at 0.7 “$s1( $i ) join – group $ group( $i )”
$ ns at 0.8 “$s 1( $i ) start”
$ns at 0.9 “$s 1( $i ) transmit 12.2kb/s” }
//To define streaming traffic
for { set i 0} {$i < $number} { incr I } {
set null( $i ) [ new Agent / Null ]
$ ns attach – agent $ UE( $i ) $ null( $i )
set udp ( $i ) [ new Agent / UDP ]
$ ns attach – agent $ server $ udp( $i )
$ns connect $ null( $i ) $udp( $i )
$ udp( $i ) set class 1
Set cbr( $i ) [ new Application / Traffic / CBR ]
$ cbr ($i ) attach – agent $ udp( $i )
$ ns at 0.4 “$ cbr( $i ) start”
$ns at 40.0 “$ cbr( $i ) stop” }
// To define interactive traffic
$ ns rtproto Session
Set log [ open ” http.log ” w]
Setpgp [ new PagePool / Math]
set tmp [new RandomVariable / Constant] ; // Size generator
$ tmp set val_ 10240 ; //Average page size
$ pgp ranvar-size $ tmp
set tmp [new RandomVariable / Exponential] ; //Age generator
$ tmp set avg _ 4 ; // Average page age
$ pgp ranvar – age $ tmp
Set s [ new Http / Server $ ns $ server ]
$ s set – page – generator $ pgp
$s log $ log
set cache [ new Http / Cache $ ns $ aGW]
$ cache log $ log
for { set i 0} {$i < $number} {incr i} {
set c( $ i) [new Http / Client $ ns $ UE( $i )]
setctmp( $ i ) [ new RandomVariable / Exponential] ; // Poisson process
$ ctmp( $ i ) set avg 1 ;//average request interval
$ c( $i ) set-interval-generator $ ctmp( $i )
$c( $ I ) set-page-generator $ pgp
$ c( $ I ) log $log
}
//define background traffic
for { set i 0} {$i<$number} {incr i} {
set sink( $i ) [new Agent / TCPSink]
$ ns attach – agent $ UE( $i ) $sink( $i )
Set tcp( $i ) [new Agent / TCP]
$ ns attach – agent $ server $ tcp( $i )
$ns connect $ sink( $i ) $ tcp( $i )
$ tcp ( $i ) set class 3
Set ftp ( $i ) [new Application/FTP]
$ ftp( $i ) attach agent $ tcp( $i )
$ns at 0.5 “$ ftp( $i ) start” }
$ ns at 50 “finish”
Proc finish {} {
global ns f log
globalns f nf log
$ ns flush – trace
flush $ log
close$ log
close $ f
close$ nf
puts “run nam”
exec nam out . nam &
exit 0 }
// start the simulation.
$ns run
After we also run the simulation, we need to analyse the performance using the following parameters i.e. throughput, packet loss rate, end and so to end delay using AWK script. This is the overall simulation steps involved in 4G Network simulation. For further guidance on 4G Network Simulator NS2 projects, approach our experts through our online project guidance service. Our experts will mine innovative and also ingenious research topics for your project enhancement and excellence. Approach us anytime; we are also available for your service at 24/7.
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