How to Implement Cellular Network in OMNeT++

To implement the cellular network in OMNeT++ requires an environment that has cellular network components like User Equipment (UE), Base Stations (BS), and the Core Network (EPC), defining network models, and configuring cellular communication protocols by simulating them. It is accomplished by LTE simulation which is designed by the INET framework by using the extended SimuLTE framework. Here, we are offering a step-by-step demonstration to implement cellular network in OMNeT++:

Step-by-Step Implementation:

Step 1: Install OMNeT++, INET Framework, and SimuLTE

1. Download OMNeT++:
   • Download the latest version of OMNeT++.
2. Install OMNeT++:
   • Follow the installation instructions provided on the website for your operating system.
3. Download and Install INET Framework:
   • The INET framework affords models for internet protocols and is often used with OMNeT++.
   • Install the INET frameworks on your system.
4. Download and Install SimuLTE:
   • SimuLTE is a framework for LTE simulations using OMNeT++.
   • Install the SimuLTE from the SimuLTE GitHub repository.

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 aptable options.
2. Set Up Directory Structure:
   • The project should contain the essential folders like src for source files and simulations for NED files and configuration.
3. Add INET and SimuLTE to Your Project:
   • Right-click on the project in the Project Explorer.
   • Select Properties -> Project References.
   • Check the boxes for INET and SimuLTE.

Step 3: Define Cellular Network Models Using NED

1. Create NED Files:
   • In the src directory, create a new NED file (for instance, CellularNetwork.ned).
   • Define the network topology in the NED file. Here’s a simple example:

package cellular;

import inet.node.inet.StandardHost;

import inet.mobility.single.RandomWaypointMobility;

import inet.physicallayer.common.packetlevel.RadioMedium;

import inet.common.misc.ThruputMeteringChannel;

import inet.node.inet.Router;

import “simulte/networknodes/epc/Epc.enet”;

import “simulte/networknodes/enb/Enb.enet”;

import “simulte/networknodes/ue/SingleUe.ned”;

network CellularNetwork

{

parameters:

int numUes = default(10);

types:

channel radioChannel extends RadioMedium {}

submodules:

epc: Epc {

@display(“p=100,100”);

}

enb: Enb {

@display(“p=300,100”);

}

ue[numUes]: SingleUe {

@display(“p=200+100*i,300”);

mobility.typename = “RandomWaypointMobility”;

}

radioMedium: radioChannel {

@display(“p=400,100”);

}

connections allowunconnected:

for i=0..numUes-1 {

ue[i].pppg++ <–> radioMedium <–> enb.pppg++;

}

enb.ethg++ <–> ThruputMeteringChannel <–> epc.ethg++;

}

Step 4: Implement Cellular Communication Logic

1. Use Built-In LTE Modules:
   • For LTE communication, use the built-in modules in the SimuLTE  like UE, eNB, and EPC. You can use these directly in the simulation.
2. Configure LTE Modules in NED File:
   • NED file must uses the SimuLTE modules as shown in the example above.

Step 5: Configure Simulation Parameters

1. Create omnetpp.ini:
   • Inside the simulation directory, create an omnetpp.ini file.
   • Define simulation parameters like duration and network parameters. Here is an sample configuration:

[General]

network = CellularNetwork

sim-time-limit = 100s

# Mobility

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

**.ue[*].mobility.speed = uniform(1mps, 10mps)

# EPC Configuration

**.epc.nrAndConnect = true

# eNodeB Configuration

**.enb.numUes = ${numUes=10}

**.enb.numBearers = 1

**.enb.dlEarfcn = 100

**.enb.ulEarfcn = 18100

# UE Configuration

**.ue[*].ulEarfcn = 18100

**.ue[*].dlEarfcn = 100

**.ue[*].numBearers = 1

Step 6: Build and Run the Simulation

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

Step 7: Analyze Results

1. View Simulation Results:
   • Once the simulation is completed, use OMNeT++’s tools to analyze the results.
   • Open the ANF (Analysis Framework) to visualize and translate the data.

We successfully learned through the guide which helps you to get started with a basic cellular network simulation in OMNeT++ using SimuLTE. According to your needs, we will offer you the details on any topic related to this.

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