How to Implement Cooperative Networking in OMNeT++

To implement the Cooperative Networking in OMNeT++, we have to optimize the performance and reliability of network in which the nodes can work together by designing and simulating a network. It has the techniques like cooperative relay, distributed data aggregation, and cooperative communication protocols. Here’s a step-by-step process on how to implement cooperative networking in OMNeT++:

Step-by-Step Implementation:

Understand Cooperative Networking Techniques

Cooperative networking techniques contains:

Cooperative Relaying: Enhance the reachability and reliability by using middle nodes which help the forward data.
Distributed Data Aggregation: To reduce redundancy and optimize the efficiency, nodes accumulate the data from other nodes.
Cooperative Communication Protocols: Protocols designed to allow and optimize cooperation among network nodes.

Install OMNeT++ and INET Framework

Make certain to install the OMNeT++ and the INET Framework.

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 (for example: CooperativeNetworkSimulation).

Define the Network Topology

Create a new NED file to State the network topology, including client nodes, relay nodes, and a server.

Example: Cooperative Network Topology (CooperativeNetwork.ned)

package cooperativenetwork;

import inet.node.inet.StandardHost;

import inet.node.inet.Router;

import inet.node.inet.WirelessHost;

network CooperativeNetwork

{

parameters:

@display(“bgb=800,400”);

submodules:

client1: WirelessHost {

@display(“p=100,300”);

}

client2: WirelessHost {

@display(“p=300,300”);

}

relay1: WirelessHost {

@display(“p=200,200”);

}

relay2: WirelessHost {

@display(“p=400,200”);

}

server: StandardHost {

@display(“p=300,100”);

}

connections:

client1.wlan[0] <–> AdhocChannel <–> relay1.wlan[0];

client2.wlan[0] <–> AdhocChannel <–> relay2.wlan[0];

relay1.wlan[0] <–> AdhocChannel <–> server.wlan[0];

relay2.wlan[0] <–> AdhocChannel <–> server.wlan[0];

}

Configure the Simulation

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

Example: Configuration File (omnetpp.ini)

[General]

network = cooperativenetwork.CooperativeNetwork

sim-time-limit = 100s

# Visualization

*.visualizer.canvasVisualizer.displayBackground = true

*.visualizer.canvasVisualizer.displayGrid = true

# Client Configuration

*.client*.numApps = 1

*.client*.app[0].typename = “CooperativeApp”

*.client*.app[0].destAddresses = “server”

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

*.client*.app[0].messageLength = 1024B

*.client*.app[0].sendInterval = 1s

# Relay Configuration

*.relay*.numApps = 1

*.relay*.app[0].typename = “CooperativeRelayApp”

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

# Server Configuration

*.server.numApps = 1

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

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

# UDP Configuration

*.client*.hasUdp = true

*.relay*.hasUdp = true

*.server.hasUdp = true

# Wireless Configuration

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

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

# IP Address Configuration

*.client1.ipv4.config = xmldoc(“client1.xml”)

*.client2.ipv4.config = xmldoc(“client2.xml”)

*.relay1.ipv4.config = xmldoc(“relay1.xml”)

*.relay2.ipv4.config = xmldoc(“relay2.xml”)

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

Create IP Address Configuration Files

State the IP address configuration in all nodes by creating XML files.

Example: IP Configuration File for client1 (client1.xml)

</interface>

</config>

Example: IP Configuration File for relay1 (relay1.xml)

</interface>

</config>

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

</interface>

</config>

Implement Cooperative Networking Application Logic

To simulate cooperative networking, we have to implement the logic for data transmission, processing, and relaying.

Example: Cooperative Client Application (Pseudo-Code)

#include <omnetpp.h>

using namespace omnetpp;

class CooperativeApp : public cSimpleModule

{

protected:

virtual void initialize() override;

virtual void handleMessage(cMessage *msg) override;

private:

void sendData();

};

Define_Module(CooperativeApp);

void CooperativeApp::initialize() {

// Initialization code

scheduleAt(simTime() + 1, new cMessage(“sendData”));

}

void CooperativeApp::handleMessage(cMessage *msg) {

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

sendData();

scheduleAt(simTime() + 1, msg);

} else {

// Handle other messages

}

void CooperativeApp::sendData() {

// Logic to send data to the relay node

cMessage *msg = new cMessage(“data”);

send(msg, “out”);

}

Example: Cooperative Relay Application (Pseudo-Code)

#include <omnetpp.h>

using namespace omnetpp;

class CooperativeRelayApp : public cSimpleModule

{

protected:

virtual void initialize() override;

virtual void handleMessage(cMessage *msg) override;

private:

void processAndForwardData(cMessage *msg);

};

Define_Module(CooperativeRelayApp);

void CooperativeRelayApp::initialize() {

// Initialization code

}

void CooperativeRelayApp::handleMessage(cMessage *msg) {

// Process and forward data to the server

processAndForwardData(msg);

}

void CooperativeRelayApp::processAndForwardData(cMessage *msg) {

// Logic to process and forward data

send(msg, “out”);

}

Example: Cooperative Server Application (Pseudo-Code)

#include <omnetpp.h>

using namespace omnetpp;

class CooperativeServerApp : public cSimpleModule

{

protected:

virtual void initialize() override;

virtual void handleMessage(cMessage *msg) override;

private:

void processData(cMessage *msg);

};

Define_Module(CooperativeServerApp);

void CooperativeServerApp::initialize() {

// Initialization code

}

void CooperativeServerApp::handleMessage(cMessage *msg) {

// Process data from relay nodes

processData(msg);

}

void CooperativeServerApp::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 select Build Project.
Run the Simulation: Click on the green play button in the OMNeT++ IDE to start the simulation.

Here in this demonstration, we offered the guide to implementing Cooperative Networking in OMNeT++ using the INET framework and executing security measures. We will clear any doubt that rises from your side about this topic.

We offer simulation and performance analysis of Cooperative Networking using OMNeT++.