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How to Implement Mobile Communication in OMNeT++

To implement the mobile communication in OMNeT++, we have to simulate an environment that has mobile nodes, defining network models, implementing communication protocols, and running simulations by setting it up. Follow the procedure provided below to implement the mobile communication in OMNeT++:

Step-by-Step Implementation:

Step 1: Install OMNeT++ and INET Framework

  1. Download OMNeT++:
    • Download the latest version of OMNeT++.
  2. Install OMNeT++:
    • Go through the instruction provided to on how to install according to the OS.
  3. Download and Install INET Framework:
    • The INET framework provides models for internet protocols and is often used with OMNeT++.
    • Install the INET framework on your computer.

Step 2: Set Up Your Project

  1. Create a New OMNeT++ Project:
    • Open the OMNeT++ IDE.
    • Go to File -> New -> OMNeT++ Project.
    • Enter a project name and select the proper options.
  2. Set Up Directory Structure:
    • Make certain that it has the necessary folders like src for source files and simulations for NED files and configuration.

Step 3: Define Network Models Using NED

  1. Create NED Files:
    • In the src directory, create a new NED file (for instance:  MobileCommunicationNetwork.ned).
    • Define the network topology in the NED file. Below, we provide an example:

package mobilecommunication;

import inet.node.inet.StandardHost;

import inet.node.inet.WirelessAccessPoint;

import inet.networklayer.configurator.ipv4.Ipv4NetworkConfigurator;

import inet.physicallayer.ieee80211.packetlevel.Ieee80211ScalarRadioMedium;

import inet.mobility.single.RandomWaypointMobility;

network MobileCommunicationNetwork

{

parameters:

int numHosts = default(10);

types:

channel radioChannel extends Ieee80211ScalarRadioMedium {}

submodules:

configurator: Ipv4NetworkConfigurator {

@display(“p=100,100”);

}

accessPoint: WirelessAccessPoint {

@display(“p=300,200”);

}

host[numHosts]: StandardHost {

@display(“p=200+100*i,400”);

mobility.typename = “RandomWaypointMobility”;

}

radioMedium: radioChannel {

@display(“p=400,100”);

}

connections allowunconnected:

for i=0..numHosts-1 {

host[i].wlan[0] <–> radioMedium <–> accessPoint.wlan[0];

}

}

Step 4: Implement Communication Logic in C++

  1. Create C++ Modules:
    • Create a new C++ class (e.g., MobileHost.cc) in the src directory.
    • It has an essential OMNeT++ headers and define module:

#include <omnetpp.h>

#include “inet/applications/base/ApplicationBase.h”

#include “inet/applications/udpapp/UdpBasicApp.h”

#include “inet/networklayer/common/L3AddressResolver.h”

#include “inet/networklayer/contract/ipv4/Ipv4Address.h”

#include “inet/networklayer/contract/IL3AddressType.h”

using namespace omnetpp;

using namespace inet;

class MobileHost : public ApplicationBase

{

protected:

virtual void initialize(int stage) override;

virtual void handleMessageWhenUp(cMessage *msg) override;

void sendPacket();

void handlePacket(cPacket *pkt);

};

Define_Module(MobileHost);

void MobileHost::initialize(int stage)

{

ApplicationBase::initialize(stage);

if (stage == INITSTAGE_LOCAL) {

// Initialization code

if (par(“sendPackets”).boolValue()) {

scheduleAt(simTime() + par(“startDelay”), new cMessage(“sendPacket”));

}

}

}

void MobileHost::handleMessageWhenUp(cMessage *msg)

{

if (msg->isSelfMessage()) {

if (strcmp(msg->getName(), “sendPacket”) == 0) {

sendPacket();

scheduleAt(simTime() + par(“sendInterval”), msg);

}

} else {

cPacket *pkt = check_and_cast<cPacket *>(msg);

handlePacket(pkt);

}

}

void MobileHost::sendPacket()

{

// Create and send a packet

EV << “Sending packet” << endl;

cPacket *pkt = new cPacket(“MobilePacket”);

pkt->setByteLength(par(“packetSize”));

send(pkt, “lowerLayerOut”);

}

void MobileHost::handlePacket(cPacket *pkt)

{

// Handle received packet

EV << “Received packet: ” << pkt->getName() << endl;

delete pkt;

}

  1. Modify NED to Use C++ Modules:
    • Use the custom mobile host module by updating the NED file.

network MobileCommunicationNetwork

{

parameters:

int numHosts = default(10);

types:

channel radioChannel extends Ieee80211ScalarRadioMedium {}

submodules:

configurator: Ipv4NetworkConfigurator {

@display(“p=100,100”);

}

accessPoint: WirelessAccessPoint {

@display(“p=300,200”);

}

host[numHosts]: MobileHost {

@display(“p=200+100*i,400”);

mobility.typename = “RandomWaypointMobility”;

}

radioMedium: radioChannel {

@display(“p=400,100”);

}

connections allowunconnected:

for i=0..numHosts-1 {

host[i].wlan[0] <–> radioMedium <–> accessPoint.wlan[0];

}

}

Step 5: Configure Simulation Parameters

  1. Create omnetpp.ini:
    • Create an omnetpp.ini file inside the simulation directory.
    • Define simulation parameters like duration and network parameters:

[General]

network = MobileCommunicationNetwork

sim-time-limit = 100s

**.sendPackets = true

**.startDelay = 1s

**.sendInterval = 2s

**.packetSize = 1024B

**.host[*].mobility.typename = “inet.mobility.single.RandomWaypointMobility”

**.host[*].mobility.initialZ = 1m

Step 6: Build and Run the Simulation

  1. Build the Project:
    • Right-click on project and choose Build Project in the OMNeT++ IDE.
  2. Run the Simulation:
    • Go to Run -> Run Configurations.
    • Generate a new run configuration for the project and run the simulation.

Step 7: Analyze Results

  1. View Simulation Results:
    • After the simulation ends, analyzing the results using OMNeT++’s tools.
    • Open the ANF (Analysis Framework) to visualize and read the data.

This procedure provided a step-by-step approach to set up a basic mobile communication simulation in OMNeT++ and the INET framework including how to expand it. We can offer any information about mobile communication as per your requests. We offer complete support for implementing Mobile Cloud Computing in OMNeT++. Our services include full simulation and project performance assistance. We specialize in mobile nodes, creating network models, implementing communication protocols, and conducting simulations tailored to your projects. Reach out to us for expert guidance!

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