How to Implement Energy Harvesting in URLLC in OMNeT++
To implement the energy harvesting in Ultra-Reliable Low-Latency Communications (URLLC) in OMNeT++ has comprises modelling together the energy harvesting process and the URLLC communication necessities. It is normally contains describing energy sources, energy storage, and the communication protocol that meets the stringent latency and reliability requirements of URLLC.
Steps to Implement Energy Harvesting in URLLC in OMNeT++
- Install OMNeT++ and INET Framework:
- Make sure that OMNeT++ and the INET framework are installed. INET offers a solid basis for modeming wireless networks, while we may essential to extend it to comprise energy harvesting and URLLC-specific features.
- Define Network Topology and Node Models:
- Make a network topology in a .ned file, describing the nodes like sensors, base stations and channels.
- Expand the node models to contain energy harvesting capabilities.
- Model Energy Harvesting:
- Execute an energy harvesting module in OMNeT++ that mimics the process of gathering energy from sources such as solar, RF, or mechanical vibrations.
- The harvested energy is normally stored in a battery or capacitor, which we also want to model.
- Implement URLLC Protocol:
- Improve or adapt a communication protocol that satisfies the URLLC requirements, like low latency, high reliability, and effective energy usage.
- We may want to modify or build new MAC and PHY layers to support URLLC.
- Integrate Energy Harvesting with URLLC:
- The main test is to make sure that the energy harvesting process does not affect with the URLLC requirements. It may include adaptive energy management algorithms that balance energy consumption with communication requirements.
- Simulation Configuration:
- Form the simulation in the .ini file, set parameters such as energy harvesting rate, battery capacity, packet arrival rate, latency requirements, and reliability thresholds.
- Run and Analyse the Simulation:
- Implement the simulation and investigate the outcomes to calculate the performance of the energy harvesting mechanism in meeting the URLLC constraints.
Example: Basic Energy Harvesting in URLLC Scenario
The following is an instance setup to get we began with energy harvesting in URLLC using OMNeT++.
- Network Definition in .ned file
network URLLCEnergyHarvestingNetwork
{
submodules:
baseStation: BaseStation {
@display(“p=100,100”);
}
sensorNode: SensorNode {
@display(“p=200,200”);
}
connections:
sensorNode.radioModule <–> baseStation.radioModule;
}
- Implement Energy Harvesting Module in C++
Build a custom energy harvesting module to be additional to the sensor node.
class EnergyHarvester : public cSimpleModule
{
protected:
double energyStored;
double maxEnergyCapacity;
double harvestingRate;
virtual void initialize() override;
virtual void handleMessage(cMessage *msg) override;
void harvestEnergy();
public:
double getEnergyStored() { return energyStored; }
};
Define_Module(EnergyHarvester);
void EnergyHarvester::initialize()
{
energyStored = par(“initialEnergy”);
maxEnergyCapacity = par(“maxEnergyCapacity”);
harvestingRate = par(“harvestingRate”);
scheduleAt(simTime() + 1, new cMessage(“harvestEnergy”));
}
void EnergyHarvester::handleMessage(cMessage *msg)
{
if (strcmp(msg->getName(), “harvestEnergy”) == 0) {
harvestEnergy();
scheduleAt(simTime() + 1, msg);
}
}
void EnergyHarvester::harvestEnergy()
{
energyStored += harvestingRate;
if (energyStored > maxEnergyCapacity) {
energyStored = maxEnergyCapacity;
}
}
- Implement a Basic URLLC Communication Protocol
Execute or modify a basic URLLC protocol in the sensor node. Make sure it verifies the energy level before transmitting to meet URLLC constraints.
class URLLCProtocol : public cSimpleModule
{
private:
EnergyHarvester *energyHarvester;
double energyConsumptionPerTx;
protected:
virtual void initialize() override;
virtual void handleMessage(cMessage *msg) override;
void sendPacket();
public:
void setEnergyHarvester(EnergyHarvester *harvester) { energyHarvester = harvester; }
};
Define_Module(URLLCProtocol);
void URLLCProtocol::initialize()
{
energyHarvester = check_and_cast<EnergyHarvester*>(getParentModule()->getSubmodule(“energyHarvester”));
energyConsumptionPerTx = par(“energyConsumptionPerTx”);
scheduleAt(simTime() + 0.1, new cMessage(“sendPacket”));
}
void URLLCProtocol::handleMessage(cMessage *msg)
{
if (strcmp(msg->getName(), “sendPacket”) == 0) {
if (energyHarvester->getEnergyStored() >= energyConsumptionPerTx) {
sendPacket();
energyHarvester->energyStored -= energyConsumptionPerTx;
}
scheduleAt(simTime() + 0.1, msg);
}
}
void URLLCProtocol::sendPacket()
{
// Logic to send packet with URLLC constraints
}
- Configure the Simulation in .ini file
[General]
network = URLLCEnergyHarvestingNetwork
sim-time-limit = 100s
**.energyHarvester.initialEnergy = 0.5 # Initial energy in Joules
**.energyHarvester.maxEnergyCapacity = 1.0 # Max energy capacity in Joules
**.energyHarvester.harvestingRate = 0.01 # Energy harvesting rate in Joules per second
**.URLLCProtocol.energyConsumptionPerTx = 0.02 # Energy consumption per transmission in Joules
Running the Simulation
- Compile the modules and run the simulation using OMNeT++.
- Evaluate the results, concentrating on whether the energy harvesting permits the URLLC protocol to meet its stringent requests.
In conclusion, we had executed the implementation process, simulate and analyse the energy harvesting in URLLC in OMNeT++ with their examples. We are prepared to present more details based on what you require. omnet-manual.com provides complete guidance for each step involved in implementing energy harvesting within Ultra-Reliable Low-Latency Communications (URLLC) using the OMNeT++ tool. We encourage you to stay connected with us for further insights in this field.