How to Implement Smart City Networking in OMNeT++

To implement the Smart City Networking in OMNeT++ has encompasses to design and emulate a network that supports numerous smart city applications like traffic management, smart lighting, environmental monitoring, and public safety. This needs to incorporate the various kinds of nodes and communication protocols to generate a detailed and interconnect system. Here, we provide the procedures on how to implement the Smart City Networking in OMNeT++ using the INET framework:

Step-by-Step Implementation

Install OMNeT++ and INET Framework

Make sure we have OMNeT++ and the INET Framework installed.

Create a New OMNeT++ Project

Open OMNeT++ IDE: Start the OMNeT++ IDE.
Create a New Project: Go to File -> New -> OMNeT++ Project. Name your project (e.g., SmartCityNetworkSimulation).

Define the Network Topology

Generate a new NED file to describe network topology has contains numerous smart city components such as sensors, actuators, gateways, and servers.

Example: Smart City Network Topology (SmartCityNetwork.ned)

package smartcitynetwork;

import inet.node.inet.StandardHost;

import inet.node.inet.WirelessHost;

import inet.node.inet.Router;

network SmartCityNetwork

{

parameters:

@display(“bgb=800,400”);

submodules:

trafficSensor1: WirelessHost {

@display(“p=100,300”);

}

trafficSensor2: WirelessHost {

@display(“p=300,300”);

}

smartLight1: WirelessHost {

@display(“p=200,200”);

}

smartLight2: WirelessHost {

@display(“p=400,200”);

}

envSensor: WirelessHost {

@display(“p=500,300”);

}

gateway: Router {

@display(“p=300,100”);

}

server: StandardHost {

@display(“p=400,100”);

}

connections allowunconnected:

trafficSensor1.wlan[0] <–> AdhocChannel <–> gateway.ethg++;

trafficSensor2.wlan[0] <–> AdhocChannel <–> gateway.ethg++;

smartLight1.wlan[0] <–> AdhocChannel <–> gateway.ethg++;

smartLight2.wlan[0] <–> AdhocChannel <–> gateway.ethg++;

envSensor.wlan[0] <–> AdhocChannel <–> gateway.ethg++;

gateway.ethg++ <–> Eth10M <–> server.ethg++;

}

Configure the Simulation

Generate an OMNeT++ initialization file to configure the parameters of the simulation.

Example: Configuration File (omnetpp.ini)

network = smartcitynetwork.SmartCityNetwork

sim-time-limit = 200s

# Visualization

*.visualizer.canvasVisualizer.displayBackground = true

*.visualizer.canvasVisualizer.displayGrid = true

# Traffic Sensor Configuration

*.trafficSensor*.numApps = 1

*.trafficSensor*.app[0].typename = “TrafficSensorApp”

*.trafficSensor*.app[0].destAddresses = “gateway”

*.trafficSensor*.app[0].destPort = 5000

*.trafficSensor*.app[0].messageLength = 512B

*.trafficSensor*.app[0].sendInterval = 2s

# Smart Light Configuration

*.smartLight*.numApps = 1

*.smartLight*.app[0].typename = “SmartLightApp”

*.smartLight*.app[0].destAddresses = “gateway”

*.smartLight*.app[0].destPort = 5001

*.smartLight*.app[0].messageLength = 512B

*.smartLight*.app[0].sendInterval = 3s

# Environmental Sensor Configuration

*.envSensor.numApps = 1

*.envSensor.app[0].typename = “EnvSensorApp”

*.envSensor.app[0].destAddresses = “gateway”

*.envSensor.app[0].destPort = 5002

*.envSensor.app[0].messageLength = 512B

*.envSensor.app[0].sendInterval = 4s

# Gateway Configuration

*.gateway.numApps = 1

*.gateway.app[0].typename = “GatewayApp”

*.gateway.app[0].localPort = 5000

# Server Configuration

*.server.numApps = 1

*.server.app[0].typename = “ServerApp”

*.server.app[0].localPort = 6000

# UDP Configuration

*.trafficSensor*.hasUdp = true

*.smartLight*.hasUdp = true

*.envSensor.hasUdp = true

*.gateway.hasUdp = true

*.server.hasUdp = true

# Wireless Configuration

*.trafficSensor*.wlan[0].typename = “AdhocHost”

*.smartLight*.wlan[0].typename = “AdhocHost”

*.envSensor.wlan[0].typename = “AdhocHost”

# IP Address Configuration

*.trafficSensor1.ipv4.config = xmldoc(“trafficSensor1.xml”)

*.trafficSensor2.ipv4.config = xmldoc(“trafficSensor2.xml”)

*.smartLight1.ipv4.config = xmldoc(“smartLight1.xml”)

*.smartLight2.ipv4.config = xmldoc(“smartLight2.xml”)

*.envSensor.ipv4.config = xmldoc(“envSensor.xml”)

*.gateway.ipv4.config = xmldoc(“gateway.xml”)

*.server.ipv4.config = xmldoc(“server.xml”)

Create IP Address Configuration Files

Generate XML files to define the IP address configuration for each node.

Example: IP Configuration File for trafficSensor1 (trafficSensor1.xml)

</interface>

</config>

Example: IP Configuration File for trafficSensor2 (trafficSensor2.xml)

</interface>

</config>

Example: IP Configuration File for smartLight1 (smartLight1.xml)

</interface>

</config>

Example: IP Configuration File for smartLight2 (smartLight2.xml)

</interface>

</config>

Example: IP Configuration File for envSensor (envSensor.xml)

</interface>

</config>

Example: IP Configuration File for gateway (gateway.xml)

</interface>

</config>

Example: IP Configuration File for server (server.xml)

</interface>

</config>

Implement Smart City Application Logic

To emulate the smart city applications, so we need to execute the logic for data collection, processing, and management.

Example: Traffic Sensor Application (Pseudo-Code)

#include <omnetpp.h>

using namespace omnetpp;

class TrafficSensorApp : public cSimpleModule

{

protected:

virtual void initialize() override;

virtual void handleMessage(cMessage *msg) override;

private:

void sendData();

};

Define_Module(TrafficSensorApp);

void TrafficSensorApp::initialize() {

// Initialization code

scheduleAt(simTime() + 2, new cMessage(“sendData”));

}

void TrafficSensorApp::handleMessage(cMessage *msg) {

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

sendData();

scheduleAt(simTime() + 2, msg);

} else {

// Handle other messages

}

void TrafficSensorApp::sendData() {

// Logic to send traffic data to the gateway

cMessage *msg = new cMessage(“trafficData”);

send(msg, “out”);

}

Example: Smart Light Application (Pseudo-Code)

#include <omnetpp.h>

using namespace omnetpp;

class SmartLightApp : public cSimpleModule

{

protected:

virtual void initialize() override;

virtual void handleMessage(cMessage *msg) override;

private:

void sendData();

};

Define_Module(SmartLightApp);

void SmartLightApp::initialize() {

// Initialization code

scheduleAt(simTime() + 3, new cMessage(“sendData”));

}

void SmartLightApp::handleMessage(cMessage *msg) {

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

sendData();

scheduleAt(simTime() + 3, msg);

} else {

// Handle other messages

}

void SmartLightApp::sendData() {

// Logic to send lighting data to the gateway

cMessage *msg = new cMessage(“lightData”);

send(msg, “out”);

}

Example: Environmental Sensor Application (Pseudo-Code)

#include <omnetpp.h>

using namespace omnetpp;

class EnvSensorApp : public cSimpleModule

{

protected:

virtual void initialize() override;

virtual void handleMessage(cMessage *msg) override;

private:

void sendData();

};

Define_Module(EnvSensorApp);

void EnvSensorApp::initialize() {

// Initialization code

scheduleAt(simTime() + 4, new cMessage(“sendData”));

}

void EnvSensorApp::handleMessage(cMessage *msg) {

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

sendData();

scheduleAt(simTime() + 4, msg);

} else {

// Handle other messages

}

void EnvSensorApp::sendData() {

// Logic to send environmental data to the gateway

cMessage *msg = new cMessage(“envData”);

send(msg, “out”);

}

Example: Gateway Application (Pseudo-Code)

#include <omnetpp.h>

using namespace omnetpp;

class GatewayApp : public cSimpleModule

{

protected:

virtual void initialize() override;

virtual void handleMessage(cMessage *msg) override;

private:

void processAndForwardData(cMessage *msg);

};

Define_Module(GatewayApp);

void GatewayApp::initialize() {

// Initialization code

}

void GatewayApp::handleMessage(cMessage *msg) {

// Process and forward data to the server

processAndForwardData(msg);

}

void GatewayApp::processAndForwardData(cMessage *msg) {

// Logic to process and forward data

send(msg, “out”);

}

Example: Server Application (Pseudo-Code)

#include <omnetpp.h>

using namespace omnetpp;

class ServerApp : public cSimpleModule

{

protected:

virtual void initialize() override;

virtual void handleMessage(cMessage *msg) override;

private:

void processData(cMessage *msg);

};

Define_Module(ServerApp);

void ServerApp::initialize() {

// Initialization code

}

void ServerApp::handleMessage(cMessage *msg) {

// Process data from gateway

processData(msg);

}

void ServerApp::processData(cMessage *msg) {

// Logic to process data

delete msg; // Example: simply delete the message

}

Run the Simulation

Build the Project: Right-click on project and choose Build Project.
Run the Simulation: Click on the green play button in the OMNeT++ IDE to start the simulation.

This demonstration offers the complete procedure on how the smart city networking will execute in the various applications using the OMNeT++ tool and also we provide more information regarding the smart city networking.

The implementation of Smart City Networking within the OMNeT++ tool is supported by our developers. For additional project execution ideas, you are welcome to reach out to us.