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How to Implement 5G network Slicing in OMNeT++

To implement the 5G network slicing in OMNeT++, we have to create an environment that has 5G base stations, core network components, and multiple network slices based on type of traffic by simulating it. The INET framework can be expanded to support network slicing features. Here’s a step-by-step process on how to implement 5G network slicing using OMNeT++.

Step-by-Step Implementation:

Step 1: Install OMNeT++ and INET Framework

  1. Download OMNeT++:
    • Download the latest version of OMNeT++.
  2. Install OMNeT++:
    • Follow the installation instructions provided that fits your system.
  3. Download and Install INET Framework:
    • The INET framework provides models for internet protocols and is often used with OMNeT++.
    • Next, we have to install the INET framework.

Step 2: Set Up Your Project

  1. Create a New OMNeT++ Project:
    • Open the OMNeT++ IDE.
    • Go to File -> New -> OMNeT++ Project.
    • Enter a project name and select the suitable options.
  2. Set Up Directory Structure:
    • Ensure your project has the essential folders like src for source files and simulations for NED files and configuration.
  3. Add INET to Your Project:
    • Right-click on your project in the Project Explorer.
    • Select Properties -> Project References.
    • Check the box for INET.

Step 3: Define 5G Network Slicing Models Using NED

  1. Create NED Files:
    • Create a new NED file (e.g., 5GNetworkSlicing.ned) in the src directory.
    • Define the network topology in the NED file. Below, we provide the sample:

package fiveg;

import inet.node.inet.StandardHost;

import inet.node.inet.Router;

import inet.node.wireless.AccessPoint;

import inet.mobility.single.RandomWaypointMobility;

import inet.physicallayer.common.packetlevel.RadioMedium;

network 5GNetworkSlicing

{

parameters:

int numUEs = default(10);

int numSlices = default(3);

types:

channel radioChannel extends RadioMedium {}

submodules:

radioMedium: radioChannel {

@display(“p=100,100”);

}

gNB: Router {

@display(“p=200,200”);

}

ue[numUEs]: StandardHost {

@display(“p=300+100*i,200”);

mobility.typename = “RandomWaypointMobility”;

}

coreNetwork: Router {

@display(“p=400,200”);

}

slice[numSlices]: Router {

@display(“p=500,200+100*i”);

}

connections allowunconnected:

gNB.ethg++ <–> Eth100M <–> coreNetwork.ethg++;

for i=0..numSlices-1 {

coreNetwork.ethg++ <–> Eth100M <–> slice[i].ethg++;

}

for i=0..numUEs-1 {

ue[i].wlan[0] <–> radioMedium <–> gNB.wlan[0];

}

}

Step 4: Implement 5G Network Slicing Logic

  1. Create C++ Modules for Network Slices:
    • Create new C++ classes (e.g., SliceManager.cc) in the src directory.
    • It should contain essential OMNeT++ headers and state network slicing logic.
  2. Slice Manager Implementation:

#include <omnetpp.h>

#include “inet/applications/base/ApplicationBase.h”

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

using namespace omnetpp;

using namespace inet;

class SliceManager : public ApplicationBase

{

protected:

virtual void initialize(int stage) override;

virtual void handleMessageWhenUp(cMessage *msg) override;

void manageSlices();

void handleSlicePacket(cPacket *pkt);

cMessage *sliceEvent = nullptr;

};

Define_Module(SliceManager);

void SliceManager::initialize(int stage)

{

ApplicationBase::initialize(stage);

if (stage == INITSTAGE_LOCAL) {

sliceEvent = new cMessage(“manageSlices”);

scheduleAt(simTime() + par(“sliceStartTime”), sliceEvent);

}

}

void SliceManager::handleMessageWhenUp(cMessage *msg)

{

if (msg == sliceEvent) {

manageSlices();

scheduleAt(simTime() + par(“sliceInterval”), sliceEvent);

} else {

cPacket *pkt = check_and_cast<cPacket *>(msg);

handleSlicePacket(pkt);

}

}

void SliceManager::manageSlices()

{

// Implement slice management logic (e.g., resource allocation)

EV << “Managing slices” << endl;

}

void SliceManager::handleSlicePacket(cPacket *pkt)

{

// Handle received slice packet

EV << “Received slice packet: ” << pkt->getName() << endl;

delete pkt;

}

Step 5: Integrate 5G Network Slicing Modules into Network Model

  1. Modify NED File to Use Network Slicing Modules:
    • Keep posted the NED file to use the custom slice manager application modules:

package fiveg;

import inet.node.inet.StandardHost;

import inet.node.inet.Router;

import inet.node.wireless.AccessPoint;

import inet.physicallayer.contract.packetlevel.IRadioMedium;

import inet.physicallayer.common.packetlevel.RadioMedium;

import inet.mobility.single.RandomWaypointMobility;

network 5GNetworkSlicing

{

parameters:

int numUEs = default(10);

int numSlices = default(3);

submodules:

radioMedium: RadioMedium {

@display(“p=100,100”);

}

gNB: Router {

@display(“p=200,200”);

}

ue[numUEs]: StandardHost {

@display(“p=300+100*i,200”);

mobility.typename = “RandomWaypointMobility”;

}

coreNetwork: Router {

@display(“p=400,200”);

}

slice[numSlices]: Router {

@display(“p=500,200+100*i”);

@children:

wlan[0].radio.transmitter.typename = “SliceManager”;

wlan[0].radio.receiver.typename = “SliceManager”;

}

connections allowunconnected:

gNB.ethg++ <–> Eth100M <–> coreNetwork.ethg++;

for i=0..numSlices-1 {

coreNetwork.ethg++ <–> Eth100M <–> slice[i].ethg++;

}

for i=0..numUEs-1 {

ue[i].wlan[0] <–> radioMedium <–> gNB.wlan[0];

}

}

Step 6: Configure Simulation Parameters

  1. Create omnetpp.ini:
    • Create an omnetpp.ini file inside the simulation directory.
    • Define simulation parameters like duration and network parameters:

[General]

network = 5GNetworkSlicing

sim-time-limit = 100s

# Mobility

**.ue[*].mobility.bounds = “0,0,1000,1000”

# Slice manager application parameters

**.slice[*].udpApp.startTime = uniform(0s, 10s)

**.slice[*].udpApp.sendInterval = exponential(1s)

**.slice[*].udpApp.messageSize = 256B

**.slice[*].udpApp.localPort = 1000

**.slice[*].udpApp.destPort = 2000

Step 7: Build and Run the Simulation

  1. Build the Project:
    • In the OMNeT++ IDE, right-click on project and select Build Project.
  2. Run the Simulation:
    • Go to Run -> Run Configurations.
    • Generate a new run configuration for the project and run the simulation.

Step 8: Analyze Results

  1. View Simulation Results:
    • Once the simulation is done, we can analyze the results using OMNeT++’s tools.
    • Open the ANF (Analysis Framework) to visualize and understand the data.

Finally, this set up will help you get started with a basic 5G network slicing simulation in OMNeT++ using the INET framework. Whenever you have some concerns about network slicing or the OMNeT++, we will guide you. Please contact us to obtain the most effective simulation results on 5G network slicing in OMNeT++, provided by leading developers for your projects.

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