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How to Calculate Network Power Efficiency in omnet++

To calculate network power efficiency in OMNeT++ has needs to determine how effectively a network use its power resources to attain the communication objectives, like data transmission. The term power efficiency is a significant parameter particularly in the energy constrained networks such as the wireless sensor networks or mobile networks, where the goal is to exploit the amount of information transferred per unit of energy consumed. The below are the procedures on how to implement the network power efficiency in OMNeT++:

Steps to Calculate Network Power Efficiency in OMNeT++:

  1. Set Up the Network Model:
    • Describe network topology using NED files in OMNeT++ that contain the nodes like base stations, mobile devices, or sensors, and configure the wireless or wired communication models.
  2. Implement Energy Consumption Logic:
    • Use the INET framework’s energy model or execute the custom logic to emulate energy consumption in each node. INET offers the modules such as SimpleEpEnergyStorage, IdealEpEnergyStorage, and Battery to monitor the energy usage.
    • Monitor energy consumption during activities like transmission, reception, idle listening, and processing.
  3. Track Data Transmission:
    • Monitor the amount of data successfully transmitted or received by each node. This can be completed by monitoring the number of bits or packets transmitted.
  4. Calculate Power Efficiency:
    • Power efficiency can be computed as the ratio of the amount of data transmitted to the amount of energy consumed: Power Efficiency=Total Data Transmitted (bits)Total Energy Consumed (Joules)\text{Power Efficiency} = \frac{\text{Total Data Transmitted (bits)}}{\text{Total Energy Consumed (Joules)}}Power Efficiency=Total Energy Consumed (Joules)Total Data Transmitted (bits)​
    • This parameter is commonly  expressed in bits per joule (bits/J).
  5. Log or Analyse Power Efficiency:
    • During the simulation, log the power efficiency occasionally or compute it at the end of the simulation to measure how effectively the network is using its power resources.

Example Implementation: Power Efficiency Calculation

The below is the sample of how to calculate the power efficiency in OMNeT++ using the INET framework:

#include <omnetpp.h>

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

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

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

using namespace omnetpp;

using namespace inet;

class PowerEfficiencyModule : public cSimpleModule {

private:

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

int64_t totalDataTransmitted;          // Total data transmitted in bits

simsignal_t powerEfficiencySignal;     // Signal to record power efficiency

protected:

virtual void initialize() override {

// Find the energy storage module in the parent module

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

totalDataTransmitted = 0;

powerEfficiencySignal = registerSignal(“powerEfficiencySignal”);

// Schedule the first power efficiency calculation

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

}

virtual void handleMessage(cMessage *msg) override {

if (msg->isPacket()) {

Packet *packet = check_and_cast<Packet *>(msg);

int packetSizeBits = packet->getBitLength();  // Get the size of the packet in bits

// Update the total data transmitted

totalDataTransmitted += packetSizeBits;

// Forward the packet to the next module

send(packet, “out”);

} else if (strcmp(msg->getName(), “calculatePowerEfficiency”) == 0) {

// Calculate the total energy consumed

double totalEnergyConsumed = energyStorage->getTotalConsumption().get();

// Calculate power efficiency (bits per joule)

double powerEfficiency = (totalEnergyConsumed > 0) ? totalDataTransmitted / totalEnergyConsumed : 0.0;

// Emit the power efficiency signal

emit(powerEfficiencySignal, powerEfficiency);

EV << “Power Efficiency: ” << powerEfficiency << ” bits/J\n”;

// Schedule the next power efficiency calculation

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

} else {

delete msg;

}

}

virtual void finish() override {

// Calculate the final power efficiency at the end of the simulation

double totalEnergyConsumed = energyStorage->getTotalConsumption().get();

double powerEfficiency = (totalEnergyConsumed > 0) ? totalDataTransmitted / totalEnergyConsumed : 0.0;

EV << “Final Power Efficiency: ” << powerEfficiency << ” bits/J\n”;

}

};

Define_Module(PowerEfficiencyModule);

Explanation:

  • PowerEfficiencyModule:
    • energyStorage: A pointer to the energy storage module that tracks energy consumption.
    • totalDataTransmitted: A counter that tracks the total amount of data transmitted in bits.
    • powerEfficiencySignal: Registers a signal to emit the calculated power efficiency for logging or analysis.
  • initialize() Function:
    • Locates the energy storage module and schedules the first calculation of power efficiency.
  • handleMessage() Function:
    • Packet Handling: When a packet is received, the module updates the total data transmitted and forwards the packet.
    • calculatePowerEfficiency: Estimates the power efficiency based on the total data transmitted and the total energy consumed. The efficiency is then secreted as a signal and logged.
  • finish() Function:
    • Logs the final power efficiency at the termination of the simulation.
  1. Run the Simulation:
  • Compile and run OMNeT++ project. And the simulation will monitor and log the power efficiency that provides the insights into how effectively the network is using its energy resources.
  1. Analyse and Interpret Results:
  • The power efficiency parameters give you insights into the network’s energy usage. Higher power efficiency values signify that the network is effectively using its power to transfer the information particular the significant in energy-constrained networks.

Additional Considerations:

  • Dynamic Energy Consumption: If the network nodes consume energy dynamically based on their activities like transmitting, receiving, idle that make sure that energy model exactly reflects this.
  • Different Node Types: In networks with heterogeneous nodes such as sensors, mobile devices, needs to consider computing the power efficiency for diverse node types to measure their relative performance.
  • Energy Harvesting: If network has contains energy-harvesting nodes, we need to account for energy replenishment in power efficiency calculations.

As we discussed earlier about how the power efficiency will perform  and calculates in OMNeT++ tool that delivers the valuable insights regarding power resource among the transmission of the node. If you want more valuable information regarding the power efficiency we will provide that too.

Let us know your parameter details, and we’ll give you the best simulation performance results for Network Power Efficiency using the OMNeT++ tool. We also handle wireless sensor networks and mobile networks for your research projects

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