How to Implement Energy Harvesting eNBB in ns3

To implement energy harvesting for an eNodeB (eNB) in ns3, we need to create a model in which the eNB can harvest energy and use that energy for its operations from its environment. This modeling mainly used in the scenarios where eNBs are deployed in remote areas and transmitted to a reliable power grid with limited access.

The following steps will guide on how to implement Energy Harvesting eNBB in ns3:

Step-by-step guide to implement eNBB in ns3

Step 1: Set Up the ns3 Environment

1. Install ns-3: Make sure that ns3 is installed on the system.

sudo apt-get update

sudo apt-get install ns3

Create a New ns-3 Project: Create a directory for the new project within the ns3 workspace.

cd ns3

mkdir scratch/energy-harvesting-enb

Step 2: Implement Energy Harvesting Model

1. Create an Energy Source Model: Define an energy source model to simulate energy harvesting for the eNB. ns3 provides a basic energy framework that you can extend.

// CustomEnergySource.h

#ifndef CUSTOM_ENERGY_SOURCE_H

#define CUSTOM_ENERGY_SOURCE_H

#include “ns3/energy-module.h”

namespace ns3 {

class CustomEnergySource : public EnergySource {

public:

static TypeId GetTypeId (void);

CustomEnergySource ();

virtual ~CustomEnergySource ();

 

void UpdateEnergyHarvested ();

 

private:

double m_energyHarvested;

Time m_lastUpdateTime;

};

 

} // namespace ns3

 

#endif // CUSTOM_ENERGY_SOURCE_H

// CustomEnergySource.cc

#include “CustomEnergySource.h”

#include “ns3/log.h”

 

namespace ns3 {

 

NS_LOG_COMPONENT_DEFINE (“CustomEnergySource”);

 

TypeId CustomEnergySource::GetTypeId (void) {

static TypeId tid = TypeId (“ns3::CustomEnergySource”)

.SetParent<EnergySource> ()

.SetGroupName (“Energy”)

.AddConstructor<CustomEnergySource> ();

return tid;

}

 

CustomEnergySource::CustomEnergySource () : m_energyHarvested (0.0) {

m_lastUpdateTime = Simulator::Now ();

}

 

CustomEnergySource::~CustomEnergySource () {}

 

void CustomEnergySource::UpdateEnergyHarvested () {

Time now = Simulator::Now ();

double timeElapsed = (now – m_lastUpdateTime).GetSeconds ();

double energyHarvested = timeElapsed * 0.1; // Example harvesting rate

m_energyHarvested += energyHarvested;

m_lastUpdateTime = now;

NS_LOG_UNCOND (“Energy harvested: ” << m_energyHarvested);

}

 

} // namespace ns3

Step 3: Integrate Energy Harvesting with eNB

1. Set Up the Simulation Script: Create a new script to integrate energy harvesting with the eNB.

// energy-harvesting-enb.cc

#include “ns3/core-module.h”

#include “ns3/network-module.h”

#include “ns3/internet-module.h”

#include “ns3/lte-module.h”

#include “ns3/mobility-module.h”

#include “ns3/energy-module.h”

#include “CustomEnergySource.h”

 

using namespace ns3;

 

NS_LOG_COMPONENT_DEFINE (“EnergyHarvestingEnb”);

 

void UpdateEnergySources (NodeContainer nodes) {

for (NodeContainer::Iterator i = nodes.Begin (); i != nodes.End (); ++i) {

Ptr<Node> node = *i;

Ptr<CustomEnergySource> energySource = node->GetObject<CustomEnergySource> ();

if (energySource) {

energySource->UpdateEnergyHarvested ();

}

}

Simulator::Schedule (Seconds (1.0), &UpdateEnergySources, nodes);

}

 

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

CommandLine cmd;

cmd.Parse (argc, argv);

 

NodeContainer ueNodes;

ueNodes.Create (2);

NodeContainer enbNodes;

enbNodes.Create (1);

 

MobilityHelper mobility;

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

mobility.Install (ueNodes);

mobility.Install (enbNodes);

 

// Install LTE Devices to the nodes

NetDeviceContainer ueLteDevs;

NetDeviceContainer enbLteDevs;

 

LteHelper lteHelper;

enbLteDevs = lteHelper.InstallEnbDevice (enbNodes);

ueLteDevs = lteHelper.InstallUeDevice (ueNodes);

 

// Attach one UE to the eNB

lteHelper.Attach (ueLteDevs.Get (0), enbLteDevs.Get (0));

 

// Install the IP stack on the UEs

InternetStackHelper internet;

internet.Install (ueNodes);

internet.Install (enbNodes);

Ipv4AddressHelper ipv4;

ipv4.SetBase (“7.0.0.0”, “255.0.0.0”);

Ipv4InterfaceContainer ueIpIface;

ueIpIface = ipv4.Assign (ueLteDevs);

 

// Add a custom energy source to the eNB

Ptr<CustomEnergySource> customEnergySource = CreateObject<CustomEnergySource> ();

enbNodes.Get (0)->AggregateObject (customEnergySource);

 

// Set up applications

uint16_t dlPort = 10000;

ApplicationContainer clientApps;

ApplicationContainer serverApps;

 

// Install and start applications on UEs and remote host

UdpClientHelper dlClient (ueIpIface.GetAddress (0), dlPort);

dlClient.SetAttribute (“MaxPackets”, UintegerValue (1000));

dlClient.SetAttribute (“Interval”, TimeValue (MilliSeconds (10)));

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

 

clientApps.Add (dlClient.Install (ueNodes.Get (1)));

clientApps.Start (Seconds (0.1));

clientApps.Stop (Seconds (10.0));

 

UdpServerHelper dlPacketSinkHelper (dlPort);

serverApps.Add (dlPacketSinkHelper.Install (ueNodes.Get (0)));

serverApps.Start (Seconds (0.1));

serverApps.Stop (Seconds (10.0));

 

// Schedule energy updates

Simulator::Schedule (Seconds (1.0), &UpdateEnergySources, enbNodes);

 

Simulator::Stop (Seconds (10.0));

Simulator::Run ();

Simulator::Destroy ();

 

return 0;

}

Step 4: Compile and Run the Simulation

1. Compile the Script: Compile the script using the waf build system.

./waf build

Run the Simulation: Run the simulation script and observe the results.

./waf –run scratch/energy-harvesting-enb

Step 5: Enable Tracing and Analyze Results

1. Enable Tracing: Add tracing to collect data for analysis.

AsciiTraceHelper ascii;

lteHelper.EnableAsciiAll(ascii.CreateFileStream(“energy-harvesting-enb.tr”));

Run the Simulation: Set the simulation stop time and run it.

Simulator::Stop(Seconds(10.0));

Simulator::Run();

Simulator::Destroy();

Step 6: Analyze the Results

After running the simulation, analyze the generated trace files (energy-harvesting-enb.tr) to study the energy harvesting dynamics and its impact on the eNB’s performance.

Over all, we had clearly discussed about the terms and models involved in implementing Energy Harvesting eNBB in ns3 by creating a model that harvest energy from the environment.

Visit ns3simulation.com for top-notch outcomes and concise insights on various project concepts and performance evaluations concerning Energy Harvesting eNBB in the ns3 tool.