How to Implement Telecommunication in ns2

To implement telecommunication networks in Network Simulator 2 (NS2) has needs to emulate numerous contexts of telecommunication systems like wired and wireless communication, voice and data services, and network protocols and this process permits to study and evaluate the performance of telecommunication networks in various scenarios. To achieve optimal results in telecommunications using the ns2 tool, connect with us for expert guidance from our top developers. The below is the step-by-step procedure to implement telecommunication networks in NS2:

Step-by-Step Implementation:

  1. Understand Telecommunication Networks
  • Telecommunication Basics: Telecommunications has contains transmitting voice, data, and video across various networks that involves wired (PSTN, DSL), wireless (cellular, Wi-Fi), and satellite communication.
  • Network Components: In a telecommunication network, common components involve switches, routers, base stations, and mobile devices.
  • Protocols: Telecommunication systems use numerous protocols such as TCP/IP, VoIP (SIP, RTP), and mobile communication protocols (GSM, LTE).
  1. Set up the NS2 Environment
  • Install NS2: Make sure NS2 is installed and configured properly on the system.
  • Familiarize with Tcl: Tcl (Tool Command Language) is used for scripting in NS2. Learn Tcl is required for setting up simulations.
  1. Design the Telecommunication Network Topology
  • Nodes and Links: Describe the nodes like mobile phones, base stations, and routers and the communication links among them (wired, wireless, satellite).
  • Traffic Patterns: Configure traffic patterns to emulate numerous telecommunication services, like voice calls, video streaming, and web browsing.

Example Tcl Script for a Basic Telecommunication Network:

set ns [new Simulator]

set tracefile [open “telecom_trace.tr” w]

$ns trace-all $tracefile

# Create wired network components

set router1 [$ns node]

set router2 [$ns node]

$ns duplex-link $router1 $router2 100Mb 10ms DropTail

# Create wireless network components (e.g., mobile nodes)

set val(chan) Channel/WirelessChannel

set val(prop) Propagation/TwoRayGround

set val(mac) Mac/802_11

set val(ifq) Queue/DropTail/PriQueue

set val(ll) LL

set val(ant) Antenna/OmniAntenna

set val(ifqlen) 50

$ns node-config -adhocRouting DSDV \

-llType $val(ll) \

-macType $val(mac) \

-ifqType $val(ifq) \

-ifqLen $val(ifqlen) \

-antType $val(ant) \

-propType $val(prop) \

-phyType Phy/WirelessPhy \

-channelType $val(chan)

set mobile_node1 [$ns node]

set mobile_node2 [$ns node]

# Create links between wired and wireless components

set base_station [$ns node]

$ns duplex-link $router1 $base_station 50Mb 5ms DropTail

$ns simplex-link $base_station $mobile_node1 11Mb 20ms DropTail

$ns simplex-link $base_station $mobile_node2 11Mb 20ms DropTail

# Configure node mobility

$ns at 1.0 “$mobile_node1 setdest 100 200 10”

$ns at 2.0 “$mobile_node2 setdest 200 300 15”

# Traffic generation (e.g., voice call simulation using UDP)

set udp [new Agent/UDP]

set null [new Agent/Null]

$ns attach-agent $mobile_node1 $udp

$ns attach-agent $mobile_node2 $null

$ns connect $udp $null

set cbr [new Application/Traffic/CBR]

$cbr attach-agent $udp

$ns at 5.0 “$cbr start”

$ns at 25.0 “$cbr stop”

# Run the simulation

$ns run

  1. Implement Telecommunication Services
  • Voice Communication (VoIP): To mimic VoIP services by producing voice traffic using UDP and RTP/RTCP protocols and it configures the nodes to act as VoIP clients and servers.
  • Data Services (Web Browsing, FTP): Use TCP agents to emulate the data services such as web browsing and file transfers.
  • Video Streaming: To mimic video streaming by generating high-bitrate UDP traffic.

Example Tcl Script for VoIP Traffic Simulation:

set udp [new Agent/UDP]

set sink [new Agent/Null]

$ns attach-agent $mobile_node1 $udp

$ns attach-agent $router2 $sink

$ns connect $udp $sink

set voip [new Application/Traffic/CBR]

$voip set packetSize_ 160

$voip set interval_ 0.02

$voip attach-agent $udp

$ns at 5.0 “$voip start”

$ns at 25.0 “$voip stop”

  1. Implement Mobility Models
  • Node Mobility: Use mobility models such as Random Waypoint or Manhattan Grid to emulate the movement of mobile nodes.
  • Handover Mechanism: Execute handover techniques to emulate the transition of mobile nodes among numerous base stations or access points as they move.

Example Tcl Script for Random Waypoint Mobility:

set val(x) 500

set val(y) 500

$ns at 0.0 “$mobile_node1 setdest [expr rand()*$val(x)] [expr rand()*$val(y)] [expr rand()*10+1]”

$ns at 0.0 “$mobile_node2 setdest [expr rand()*$val(x)] [expr rand()*$val(y)] [expr rand()*10+1]”

  1. Simulate Telecommunication Networks
  • Run the Simulation: Implement the Tcl script to emulate the telecommunication network and it will generate trace files that involves detailed data about the network’s performance.
  • Analyse the Results: To study key performance metrics like packet loss, latency, jitter, throughput, and handover success rate using NS2’s trace files.

Trace File Analysis: we use tools such as AWK, Perl, or custom scripts to parse the trace file and extract performance metrics.

  1. Optimize and Extend
  • Quality of Service (QoS): Execute QoS mechanisms to select various kinds of traffic like prioritizing voice traffic over data traffic.
  • Network Optimization: validate with numerous network configurations, handover algorithms, and traffic patterns to enhance the network performance.

Example Tcl Script for QoS Simulation:

set qos [new Queue/RED]

$qos set limit_ 50

$qos set minthresh_ 5

$qos set maxthresh_ 15

$qos set gentle_ true

$ns attach-queue $base_station $qos

  1. Document Your Implementation
  • Documentation: Document the network topology, traffic patterns, mobility models, and performance analysis.
  • Reporting: If this is for academic or research purposes, make a complete report that has methodology, simulation setup, results, and conclusions.
  1. Further Research and Extensions
  • 5G and Beyond: To mimic an advanced telecommunication technologies such as 5G, that concentrates on contexts such as massive MIMO, network slicing, and ultra-reliable low-latency communication (URLLC).
  • Security in Telecommunications: Execute security mechanisms to secure the telecommunication networks from attacks such as eavesdropping, spoofing, and denial-of-service attacks.

In this demonstration, we clearly show on how to execute the telecommunication network in the tool of ns2. We plan to elaborate more information about how the telecommunication will perform in other simulation tool.

Experience outstanding performance in both wired and wireless communication, voice and data services, and network protocols with the support of our skilled team.