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How to Calculate Network Residual Energy Level in omnet++

To calculate the network residual energy level in OMNeT++ has several steps to follow and it is critical in scenarios such as wireless sensor networks, where energy efficiency is a crucial concern and the term “Residual energy” is defined to the remaining energy in a node’s battery that is directly affects the node’s operational lifetime and the overall network’s prolonged existence.

The below are the procedures on how to calculate the network residual energy level in OMNeT++:

Steps to Calculate Network Residual Energy Level in OMNeT++:

  1. Set Up the Network Model:
    • Describe network topology using NED files that contains to setting up nodes with energy storage models like batteries.
  2. Implement or Use an Energy Model:
    • OMNeT++ and its INET framework offer the modules to emulate energy consumption like SimpleEpEnergyStorage or IdealEpEnergyStorage. These models monitor the energy consumed by each node based on its accomplishments like transmitting, receiving, idle.
  3. Track Energy Consumption:
    • The energy model monitors the energy consumption as the node achieves numerous activities and the residual energy level is merely the remaining energy after accounting for this consumption.
  4. Calculate Residual Energy:
    • We can query the residual energy level of each node during or at the end of the simulation. The energy model commonly offers a approach to receive the current energy level.
  5. Analyse and Log Residual Energy:
    • The residual energy levels can be logged occasionally to measure energy consumption over time and to measure the network’s energy efficiency.

Example Implementation: Residual Energy Calculation

The given below is the sample of how to calculate and track the residual energy level in OMNeT++ using the INET framework’s energy model:

#include <omnetpp.h>

#include “inet/power/storage/SimpleEpEnergyStorage.h”

#include “inet/power/contract/IEnergyStorage.h”

using namespace omnetpp;

using namespace inet;

class ResidualEnergyModule : public cSimpleModule {

private:

SimpleEpEnergyStorage *energyStorage;  // Pointer to the energy storage module

simsignal_t residualEnergySignal;      // Signal to record residual energy

protected:

virtual void initialize() override {

// Find the energy storage module in the parent module

energyStorage = check_and_cast<SimpleEpEnergyStorage *>(getParentModule()->getSubmodule(“energyStorage”));

residualEnergySignal = registerSignal(“residualEnergySignal”);

// Schedule periodic checks of residual energy

scheduleAt(simTime() + par(“checkInterval”).doubleValue(), new cMessage(“checkEnergy”));

}

virtual void handleMessage(cMessage *msg) override {

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

// Get the current residual energy level

double residualEnergy = energyStorage->getResidualEnergyCapacity().get();

// Emit the residual energy level

emit(residualEnergySignal, residualEnergy);

EV << “Current Residual Energy: ” << residualEnergy << ” J\n”;

// Schedule the next check

scheduleAt(simTime() + par(“checkInterval”).doubleValue(), msg);

} else {

delete msg;

}

}

virtual void finish() override {

// Get the final residual energy level at the end of the simulation

double finalResidualEnergy = energyStorage->getResidualEnergyCapacity().get();

EV << “Final Residual Energy: ” << finalResidualEnergy << ” J\n”;

}

};

Define_Module(ResidualEnergyModule);

Explanation:

  • ResidualEnergyModule:
    • energyStorage: A pointer to the energy storage module like  SimpleEpEnergyStorage that monitors the node’s energy consumption.
    • residualEnergySignal: A signal to release the current residual energy level for logging and analysis.
  • initialize() Function:
    • Discoveries the energy storage module inside the parent module and schedules periodic orders to observe the residual energy.
  • handleMessage() Function:
    • Periodically test and logs the residual energy level and the function release the residual energy level as a signal that can be recorded for later analysis.
  • finish() Function:
    • Logs the final residual energy level at the end of the simulation.
  1. Run the Simulation:
  • Compile and run OMNeT++ project. The simulation will occasionally validate and log the residual energy level of each node that delivers insights into energy consumption over time.
  1. Analyse and Interpret Results:
  • The residual energy levels recorded during the simulation can be used to evaluate the energy efficiency of the network and this information supports in familiarizing how quickly nodes are reducing their energy and can guide strategies for energy conservation.

Additional Considerations:

  • Energy Consumption Events: The energy consumption depends on numerous events such as packet transmission, reception, idle listening, and sleep modes and make sure that the energy model precisely reflects the node’s activities.
  • Energy Efficiency Strategies: Consider to execute the energy-efficient protocols or mechanisms that have duty cycling, energy-aware routing to extend the network’s operational lifetime.
  • Network Lifetime: evaluate the network lifetime based on when nodes initiate to run out of energy, and discover the ways to balance energy consumption across the network.

In the above setup, we clearly demonstrate how to calculate the residual energy in the OMNeT++ tool that has to setup the network model and then apply the energy model to calculate the remaining energy in the battery. If you have any doubts regarding the residual energy we will support and provide that too.

We have conducted simulation performance results on Network Residual Energy Level using the OMNeT++ tool. If you’re looking for a personalized research experience, feel free to reach out to us. Whether it’s SimpleEpEnergyStorage or IdealEpEnergyStorage, we have all the top tools and a skilled team ready to support your research efforts.

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