How to Begin Implement Network Power Efficiency in NS3

To begin implementing and analysing the Network Power Efficiency using NS3, we can estimate the volume of data that are effectively sent or inherited relative to the energy utilized by network devices. Power efficiency is a key parameter to estimate the energy-constrained networks’ performance such as sensor networks or mobile interaction systems. Below is a comprehensive approach on how to start Network Power Efficiency using NS3:

Steps to Implement Network Power Efficiency in NS3

1. Understand Power Efficiency

• Definition: Power efficiency is the percentage of the data throughput (or useful work) to the power exhausted by the network.
• Metric:
  • Power Efficiency (η\etaη): η=Throughput (bits/s)Energy Consumed (Joules)\eta = \frac{\text{Throughput (bits/s)}}{\text{Energy Consumed (Joules)}}η=Energy Consumed (Joules)Throughput (bits/s)​
  • Units: bits per Joule (bps/J).

2. Set Up NS3 Simulation Environment

1. Install NS3:
   • Make sure that we have installed and set up NS3 on the system. We can also download it.
2. Choose a Network Scenario:
   • Make use of wireless networks such as WiFi or LTE in which energy utilization is an important concern.
3. Enable the Energy Framework:
   • NS3 environment has an Energy Framework for designing the energy utilization on the network nodes.

3. Configure Energy Models

1. Energy Source:
   • Integrate an energy source such as BasicEnergySource to every single node.
   • Set up the first energy and power reduction rate.
2. Device Energy Model:
   • Add WifiRadioEnergyModel to the network device which is an energy model.

4. Implement Power Efficiency Calculation

Here’s a sample NS3 script for computing and recording the energy efficiency within a WiFi network.

Example Script: Power Efficiency in NS3

#include “ns3/core-module.h”

#include “ns3/network-module.h”

#include “ns3/internet-module.h”

#include “ns3/wifi-module.h”

#include “ns3/mobility-module.h”

#include “ns3/energy-module.h”

#include “ns3/applications-module.h”

using namespace ns3;

class PowerEfficiencyCalculator {

public:

PowerEfficiencyCalculator(double simulationTime) : m_simulationTime(simulationTime), m_totalThroughput(0), m_totalEnergyConsumed(0) {}

void AddThroughput(double throughput) {

m_totalThroughput += throughput;

}

void AddEnergyConsumption(double energyConsumed) {

m_totalEnergyConsumed += energyConsumed;

}

void CalculatePowerEfficiency() {

double efficiency = (m_totalThroughput * 8.0) / m_totalEnergyConsumed; // Throughput in bits / Joule

NS_LOG_UNCOND(“Total Throughput: ” << m_totalThroughput / 1e6 << ” Mbps”);

NS_LOG_UNCOND(“Total Energy Consumed: ” << m_totalEnergyConsumed << ” Joules”);

NS_LOG_UNCOND(“Power Efficiency: ” << efficiency << ” bits/Joule”);

}

private:

double m_simulationTime;

double m_totalThroughput;

double m_totalEnergyConsumed;

};

PowerEfficiencyCalculator powerEfficiencyCalculator(10.0);

void MonitorThroughput(Ptr<FlowMonitor> monitor, double simulationTime) {

FlowMonitor::FlowStatsContainer stats = monitor->GetFlowStats();

double totalThroughput = 0;

for (auto const &flow : stats) {

totalThroughput += (flow.second.rxBytes * 8.0) / simulationTime; // Throughput in bits/s

}

powerEfficiencyCalculator.AddThroughput(totalThroughput);

}

void MonitorEnergy(Ptr<BasicEnergySource> energySource) {

double remainingEnergy = energySource->GetRemainingEnergy();

double initialEnergy = energySource->GetInitialEnergy();

double energyConsumed = initialEnergy – remainingEnergy;

powerEfficiencyCalculator.AddEnergyConsumption(energyConsumed);

}

int main(int argc, char *argv[]) {

CommandLine cmd;

cmd.Parse(argc, argv);

// Create nodes

NodeContainer nodes;

nodes.Create(2);

// Configure WiFi

YansWifiChannelHelper wifiChannel = YansWifiChannelHelper::Default();

YansWifiPhyHelper wifiPhy = YansWifiPhyHelper::Default();

wifiPhy.SetChannel(wifiChannel.Create());

WifiHelper wifi;

wifi.SetStandard(WIFI_PHY_STANDARD_80211g);

WifiMacHelper mac;

mac.SetType(“ns3::AdhocWifiMac”);

NetDeviceContainer devices = wifi.Install(wifiPhy, mac, nodes);

// Configure mobility

MobilityHelper mobility;

mobility.SetMobilityModel(“ns3::ConstantPositionMobilityModel”);

mobility.Install(nodes);

// Configure energy sources

BasicEnergySourceHelper energySourceHelper;

energySourceHelper.Set(“BasicEnergySourceInitialEnergyJ”, DoubleValue(100.0)); // 100 Joules initial energy

EnergySourceContainer energySources = energySourceHelper.Install(nodes);

// Configure device energy models

WifiRadioEnergyModelHelper wifiRadioEnergyHelper;

wifiRadioEnergyHelper.Install(devices, energySources);

// Install Internet stack

InternetStackHelper stack;

stack.Install(nodes);

// Configure IP addresses

Ipv4AddressHelper address;

address.SetBase(“10.1.1.0”, “255.255.255.0”);

Ipv4InterfaceContainer interfaces = address.Assign(devices);

// Configure applications

UdpEchoServerHelper server(9);

ApplicationContainer serverApp = server.Install(nodes.Get(1));

serverApp.Start(Seconds(1.0));

serverApp.Stop(Seconds(10.0));

UdpEchoClientHelper client(interfaces.GetAddress(1), 9);

client.SetAttribute(“MaxPackets”, UintegerValue(100));

client.SetAttribute(“Interval”, TimeValue(MilliSeconds(100)));

client.SetAttribute(“PacketSize”, UintegerValue(1024));

ApplicationContainer clientApp = client.Install(nodes.Get(0));

clientApp.Start(Seconds(2.0));

clientApp.Stop(Seconds(10.0));

// Monitor throughput

FlowMonitorHelper flowmonHelper;

Ptr<FlowMonitor> monitor = flowmonHelper.InstallAll();

Simulator::Schedule(Seconds(10.0), &MonitorThroughput, monitor, 10.0);

// Monitor energy consumption

Ptr<BasicEnergySource> energySource = DynamicCast<BasicEnergySource>(energySources.Get(0));

Simulator::Schedule(Seconds(10.0), &MonitorEnergy, energySource);

// Schedule power efficiency calculation

Simulator::Schedule(Seconds(10.0), &PowerEfficiencyCalculator::CalculatePowerEfficiency, &powerEfficiencyCalculator);

Simulator::Run();

Simulator::Destroy();

return 0;

}

Explanation of the Script

1. Energy Model:
   • BasicEnergySource offers initial energy and then monitors the energy depletion.
   • WifiRadioEnergyModel replicates energy utilization for WiFi devices.
2. Throughput Monitoring:
   • FlowMonitor determines the total throughput for every flow.
3. Energy Monitoring:
   • Computes the energy used up by deducting the residual energy from the first energy.
4. Power Efficiency Calculation:
   • It integrates the throughput and energy utilization for determining the effectiveness of power.

5. Run the Simulation

1. Build the script and execute the simulation in NS3:

./waf –run “power-efficiency-example”

1. Monitor the records for metrics like throughput, energy consumption, and power efficiency.

6. Analyze Results

• Impact of Traffic Load:
  • Maximize the volume of packets or nodes and also monitor the impact over power efficiency.
• Impact of Distance:
  • Enlarge the distance among nodes for examining the tradeoff between effectiveness of energy and transmission power.

By adhering to these steps, you can implement the Network Power Efficiency and effectively analyze its outcomes using NS3 environment. We will expand the project to explore its various functions as per your requests.