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How to Implement UWB communication in OMNeT++

To implement the Ultra-Wideband (UWB) communication in OMNeT++ has contains to generate the emulation scenarios that encompass the UWB transmitters, receivers, and potentially intermediate nodes like UWB-enabled access points. The INET framework is protracted to provision UWB functionalities.

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Here, we can see the detailed procedures on how to implement the simple UWB communication simulation in OMNeT++ using the INET framework.

Step-by-Step Implementation:

Step 1: Install OMNeT++ and INET Framework

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

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 appropriate options.
  2. Set Up Directory Structure:
    • Make sure the project has the essential folders, like src for source files and simulations for NED files and configuration.
  3. Add INET to Your Project:
    • Right-click on your project in the Project Explorer.
    • Select Properties -> Project References.
    • Check the box for INET.

Step 3: Define UWB Network Models Using NED

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

package uwb;

import inet.node.inet.StandardHost;

import inet.node.inet.Router;

import inet.mobility.single.RandomWaypointMobility;

import inet.physicallayer.common.packetlevel.RadioMedium;

network UWBNetwork

{

parameters:

int numNodes = default(5);

types:

channel radioChannel extends RadioMedium {}

submodules:

radioMedium: radioChannel {

@display(“p=100,100”);

}

node[numNodes]: StandardHost {

@display(“p=200+100*i,200”);

mobility.typename = “RandomWaypointMobility”;

}

connections allowunconnected:

for i=0..numNodes-1 {

node[i].wlan[0] <–> radioMedium <–> node[(i+1) % numNodes].wlan[0];

}

}

Step 4: Implement UWB Communication Logic

  1. Create C++ Modules for UWB Communication:
    • In the src directory, generate new C++ classes such as UWBTransmitter.cc and UWBReceiver.cc.
    • Contain necessary OMNeT++ headers and outline UWB communication logic.
  2. UWB Transmitter Implementation:

#include <omnetpp.h>

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

#include “inet/common/packet/Packet.h”

using namespace omnetpp;

using namespace inet;

class UWBTransmitter : public ApplicationBase

{

protected:

virtual void initialize(int stage) override;

virtual void handleMessageWhenUp(cMessage *msg) override;

void sendUWBMessage();

void handleUWBMessage(cPacket *pkt);

cMessage *sendEvent = nullptr;

};

Define_Module(UWBTransmitter);

void UWBTransmitter::initialize(int stage)

{

ApplicationBase::initialize(stage);

if (stage == INITSTAGE_LOCAL) {

sendEvent = new cMessage(“sendUWBMessage”);

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

}

}

void UWBTransmitter::handleMessageWhenUp(cMessage *msg)

{

if (msg == sendEvent) {

sendUWBMessage();

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

} else {

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

handleUWBMessage(pkt);

}

}

void UWBTransmitter::sendUWBMessage()

{

// Create and send a UWB message to the next node

EV << “Sending UWB message” << endl;

Packet *pkt = new Packet(“UWBMessage”);

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

send(pkt, “lowerLayerOut”);

}

void UWBTransmitter::handleUWBMessage(cPacket *pkt)

{

// Handle received UWB message

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

delete pkt;

}

  1. UWB Receiver Implementation:

#include <omnetpp.h>

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

#include “inet/common/packet/Packet.h”

using namespace omnetpp;

using namespace inet;

class UWBReceiver : public ApplicationBase

{

protected:

virtual void initialize(int stage) override;

virtual void handleMessageWhenUp(cMessage *msg) override;

void handleUWBMessage(cPacket *pkt);

};

Define_Module(UWBReceiver);

void UWBReceiver::initialize(int stage)

{

ApplicationBase::initialize(stage);

}

void UWBReceiver::handleMessageWhenUp(cMessage *msg)

{

if (msg->isSelfMessage()) {

delete msg;

} else {

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

handleUWBMessage(pkt);

}

}

void UWBReceiver::handleUWBMessage(cPacket *pkt)

{

// Handle received UWB message

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

delete pkt;

}

Step 5: Integrate UWB Modules into Network Model

  1. Modify NED File to Use UWB Modules:
    • Update NED file to use the custom UWB transmitter and receiver modules:

package uwb;

import inet.node.inet.StandardHost;

import inet.physicallayer.contract.packetlevel.IRadioMedium;

import inet.physicallayer.common.packetlevel.RadioMedium;

import inet.mobility.single.RandomWaypointMobility;

network UWBNetwork

{

parameters:

int numNodes = default(5);

submodules:

radioMedium: RadioMedium {

@display(“p=100,100”);

}

node[numNodes]: StandardHost {

@display(“p=200+100*i,200”);

mobility.typename = “RandomWaypointMobility”;

@children:

wlan[0].radio.transmitter.typename = “UWBTransmitter”;

wlan[0].radio.receiver.typename = “UWBReceiver”;

}

connections allowunconnected:

for i=0..numNodes-1 {

node[i].wlan[0] <–> radioMedium <–> node[(i+1) % numNodes].wlan[0];

}

}

Step 6: Configure Simulation Parameters

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

network = UWBNetwork

sim-time-limit = 100s

# Mobility

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

# UWB application parameters

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

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

**.node[*].udpApp.messageSize = 256B

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

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

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 compile 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 visualize and interpret the data.

In the above script, we had completely evaluated and analysed the information for compile the simulation to transmit and receive the nodes buy using the UWB features that executed in OMNet++ and also offer the more information regarding the UWB communication.

Our developers specialize in implementing UWB communication in OMNeT++ for your projects. Explore project ideas related to UWB transmitters, receivers, and possible intermediate nodes.

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