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How to Implement VANET in OMNeT++

To implement the Vehicular Ad Hoc Networks (VANETs) in OMNeT++ has needs to generate a emulation that contains vehicles and roadside units (RSUs), describing network models, and executing the VANET-based communication protocols. We need to use the Veins framework, which is built on top of OMNeT++ and INET that particularly modelled for VANET simulations. Here, we offer the procedures on how to implement the simple VANET in OMNet++:

Step-by-Step Implementation:

Step 1: Install OMNeT++, INET Framework, and Veins

  1. Download OMNeT++:
    • Install the OMNet++ latest version.
  2. Install OMNeT++:
    • Based on the operating system version download the OMNet++.
  3. Download and Install INET Framework:
    • The INET framework offers models for internet protocols and is frequently used with OMNeT++.
    • We must download it from the INET website.
  4. Download and Install Veins:

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 sure the project has the necessary folders, like src for source files and simulations for NED files and configuration.
  3. Add INET and Veins to Your Project:
    • Right-click on your project in the Project Explorer.
    • Select Properties -> Project References.
    • Check the boxes for INET and Veins.

Step 3: Define VANET Network Models Using NED

  1. Create NED Files:
    • In the src directory, create a new NED file (e.g., VANETNetwork.ned).
    • Define the network topology in the NED file. Here’s a simple example:

package vanet;

import inet.node.inet.StandardHost;

import inet.node.inet.Router;

import inet.networklayer.configurator.ipv4.Ipv4NetworkConfigurator;

import inet.physicallayer.ieee80211.packetlevel.Ieee80211ScalarRadioMedium;

import inet.mobility.single.TraCIMobility;

import veins.node.vehicle.TraCIMobility;

network VANETNetwork

{

parameters:

int numVehicles = default(10);

types:

channel radioChannel extends Ieee80211ScalarRadioMedium {}

submodules:

configurator: Ipv4NetworkConfigurator {

@display(“p=100,100”);

}

rsu: Router {

@display(“p=200,100”);

}

vehicle[numVehicles]: StandardHost {

@display(“p=300+100*i,200”);

mobility.typename = “TraCIMobility”;

}

radioMedium: radioChannel {

@display(“p=400,100”);

}

connections allowunconnected:

for i=0..numVehicles-1 {

vehicle[i].wlan[0] <–> radioMedium <–> rsu.wlan[0];

}

}

Step 4: Implement VANET Communication Logic

  1. Create C++ Modules for Vehicles and RSUs:
    • In the src directory, generate new C++ classes like VehicleApp.cc and RSUApp.cc.
    • Embrace essential OMNeT++ headers and describe the VANET communication logic.
  2. Vehicle Application Implementation:

#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 VehicleApp : public ApplicationBase

{

protected:

virtual void initialize(int stage) override;

virtual void handleMessageWhenUp(cMessage *msg) override;

void sendBeacon();

void handleBeacon(cPacket *pkt);

cMessage *sendEvent = nullptr;

};

 

Define_Module(VehicleApp);

void VehicleApp::initialize(int stage)

{

ApplicationBase::initialize(stage);

if (stage == INITSTAGE_LOCAL) {

sendEvent = new cMessage(“sendBeacon”);

scheduleAt(simTime() + par(“startTime”), sendEvent);

}

}

void VehicleApp::handleMessageWhenUp(cMessage *msg)

{

if (msg == sendEvent) {

sendBeacon();

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

} else {

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

handleBeacon(pkt);

}

}

void VehicleApp::sendBeacon()

{

// Create and send a beacon packet to other vehicles and RSUs

EV << “Sending beacon” << endl;

cPacket *pkt = new cPacket(“Beacon”);

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

send(pkt, “lowerLayerOut”);

}

void VehicleApp::handleBeacon(cPacket *pkt)

{

// Handle received beacon packet from other vehicles and RSUs

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

delete pkt;

}

  1. RSU Application Implementation:

#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 RSUApp : public ApplicationBase

{

protected:

virtual void initialize(int stage) override;

virtual void handleMessageWhenUp(cMessage *msg) override;

void handleBeacon(cPacket *pkt);

};

Define_Module(RSUApp);

void RSUApp::initialize(int stage)

{

ApplicationBase::initialize(stage);

}

void RSUApp::handleMessageWhenUp(cMessage *msg)

{

if (msg->isSelfMessage()) {

delete msg;

} else {

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

handleBeacon(pkt);

}

}

void RSUApp::handleBeacon(cPacket *pkt)

{

// Handle received beacon packet from vehicles

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

delete pkt;

}

Step 5: Configure Simulation Parameters

  1. Create omnetpp.ini:
    • In the simulations directory, create an omnetpp.ini file.
    • Describe simulation parameters, like the duration and network parameters:

network = VANETNetwork

sim-time-limit = 100s

# Mobility

**.vehicle[*].mobility.bounds = “0,0,1000,1000”

**.vehicle[*].mobility.speed = uniform(1mps, 10mps)

# Vehicle application parameters

**.vehicle[*].udpApp.startTime = uniform(0s, 10s)

**.vehicle[*].udpApp.sendInterval = exponential(1s)

**.vehicle[*].udpApp.beaconSize = 256B

**.vehicle[*].udpApp.localPort = 1000

**.vehicle[*].udpApp.destPort = 2000

# RSU application parameters

**.rsu.udpApp.localPort = 2000

Step 6: Integrate Veins and SUMO for Mobility

  1. Set Up SUMO:
    • Download and install SUMO (Simulation of Urban Mobility).
  2. Create a SUMO Configuration File:
    • Create a SUMO configuration file (sumo.cfg) that outlines the road network and vehicle routes.
  3. Integrate SUMO with Veins:
    • Use the TraCI module in Veins to connect OMNeT++ with SUMO.
    • Configure the TraCI parameters in your omnetpp.ini file:

**.manager.moduleType = “veins::TraCIScenarioManagerForker”

**.manager.launchConfig = xmldoc(“sumo-launchd.xml”)

**.vehicle[*].mobility.typename = “veins::TraCIMobility”

**.rsu.mobility.typename = “veins::TraCIMobility”

Step 7: Build and Run the Simulation

  1. Build the Project:
    • In the OMNeT++ IDE, right-click on your project and select Build Project.
  2. Run the Simulation:
    • Go to Run -> Run Configurations.
    • Set up a new run configuration for your project and run the simulation.

Step 8: Analyse Results

  1. View Simulation Results:
    • After the simulation completes, use OMNeT++’s tools to measure the results.
    • Open the ANF (Analysis Framework) to think about and interpret the data.

In the end, we demonstrate the valuable insights regarding how the Vehicular Ad Hoc Networks emulate in the VANET simulations. We provide the more information about how the VANET environment performs in other tools.

We have conducted work on VANET protocols within the OMNeT++ framework and are pleased to share our simulation results with you. Please provide us with the details of your project, and we will be happy to assist you further. Additionally, we offer implementation services for VANET using the OMNeT++ tool.

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