Ns3 Projects for B.E/B.Tech M.E/M.Tech PhD Scholars.  Phone-Number:9790238391   E-mail: ns3simulation@gmail.com

How to Implement Satellite Constellations 5G in ns3

To implement the satellite constellations for 5G in ns3 has encompasses to setup the network simulation that design the features of satellites and their interaction with ground stations and user equipment (UE).

Comparative analysis on Satellite Constellations 5G in ns3tool are carried out by ns3simulation.com, so if you face any difficulties then connect with us. We construct and setup the network simulation related to your concept.

The given below is the complete procedure on how to set up a basic satellite constellation with 5G capabilities in ns3:

Step-by-Step Implementation:

Step 1: Set up Your ns3 Environment

Make sure ns3 is installed in the computer.

Step 2: Create a New Simulation Script

Create a new simulation script in the scratch directory of your ns-3 installation. For example, create a file named satellite_constellation_5g.cc.

Step 3: Include Necessary Headers

Include the essential ns3 headers at the beginning of your script. Here’s an example:

#include “ns3/core-module.h”

#include “ns3/network-module.h”

#include “ns3/internet-module.h”

#include “ns3/mobility-module.h”

#include “ns3/point-to-point-module.h”

#include “ns3/applications-module.h”

#include “ns3/ipv4-global-routing-helper.h”

#include “ns3/antenna-module.h”

#include “ns3/propagation-module.h”

#include “ns3/satellite-module.h”

#include “ns3/lte-module.h”

using namespace ns3;

Step 4: Define Command-Line Arguments for Parameterization

Use the CommandLine class to define parameters that can be set through the command line.

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

{

uint32_t numUeNodes = 10;

uint32_t numSatellites = 6;

double simTime = 20.0;

double satelliteAltitude = 600.0; // Altitude in km

CommandLine cmd;

cmd.AddValue(“numUeNodes”, “Number of UE nodes”, numUeNodes);

cmd.AddValue(“numSatellites”, “Number of satellites”, numSatellites);

cmd.AddValue(“simTime”, “Simulation time (seconds)”, simTime);

cmd.AddValue(“satelliteAltitude”, “Satellite altitude (km)”, satelliteAltitude);

cmd.Parse(argc, argv);

NodeContainer ueNodes;

ueNodes.Create(numUeNodes);

NodeContainer satelliteNodes;

satelliteNodes.Create(numSatellites);

NodeContainer enbNodes;

enbNodes.Create(1);

// Configure mobility for UE nodes

MobilityHelper ueMobility;

ueMobility.SetPositionAllocator(“ns3::UniformDiscPositionAllocator”,

“X”, DoubleValue(0.0),

“Y”, DoubleValue(0.0),

“rho”, DoubleValue(1000.0));

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

ueMobility.Install(ueNodes);

// Configure mobility for satellite nodes

MobilityHelper satelliteMobility;

Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator>();

for (uint32_t i = 0; i < numSatellites; ++i)

{

double angle = i * 360.0 / numSatellites;

double x = 1000.0 * cos(angle * M_PI / 180.0);

double y = 1000.0 * sin(angle * M_PI / 180.0);

positionAlloc->Add(Vector(x, y, satelliteAltitude * 1000)); // Convert km to meters

}

satelliteMobility.SetPositionAllocator(positionAlloc);

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

satelliteMobility.Install(satelliteNodes);

// Configure mobility for eNB node

MobilityHelper enbMobility;

enbMobility.SetPositionAllocator(“ns3::GridPositionAllocator”,

“MinX”, DoubleValue(0.0),

“MinY”, DoubleValue(0.0),

“DeltaX”, DoubleValue(0.0),

“DeltaY”, DoubleValue(0.0),

“GridWidth”, UintegerValue(1),

“LayoutType”, StringValue(“RowFirst”));

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

enbMobility.Install(enbNodes);

// Install LTE Devices to the nodes

NetDeviceContainer enbLteDevs;

NetDeviceContainer ueLteDevs;

NetDeviceContainer satelliteLteDevs;

LteHelper lteHelper;

lteHelper.SetAttribute(“PathlossModel”, StringValue(“ns3::FriisPropagationLossModel”));

enbLteDevs = lteHelper.InstallEnbDevice(enbNodes);

ueLteDevs = lteHelper.InstallUeDevice(ueNodes);

satelliteLteDevs = lteHelper.InstallUeDevice(satelliteNodes);

// Attach UEs to eNB

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

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

// Install the IP stack on the UEs

InternetStackHelper internet;

internet.Install(ueNodes);

internet.Install(satelliteNodes);

Ipv4AddressHelper ipv4;

ipv4.SetBase(“7.0.0.0”, “255.0.0.0”);

Ipv4InterfaceContainer ueIpIface;

ueIpIface = ipv4.Assign(ueLteDevs);

Ipv4InterfaceContainer satelliteIpIface;

satelliteIpIface = ipv4.Assign(satelliteLteDevs);

// Set the default gateway for the UEs and Satellites

Ptr<Node> ueNode = ueNodes.Get(0);

Ptr<Ipv4StaticRouting>ueStaticRouting=Ipv4RoutingHelper::GetRouting<Ipv4StaticRouting>(ueNode->GetObject<Ipv4>()->GetRoutingProtocol());

ueStaticRouting->SetDefaultRoute(Ipv4Address(“7.0.0.1”), 1);

Ptr<Node> satelliteNode = satelliteNodes.Get(0);

Ptr<Ipv4StaticRouting>satelliteStaticRouting=Ipv4RoutingHelper::GetRouting<Ipv4StaticRouting>(satelliteNode->GetObject<Ipv4>()->GetRoutingProtocol());

satelliteStaticRouting->SetDefaultRoute(Ipv4Address(“7.0.0.1”), 1);

// Install and start applications on UEs and remote host

uint16_t dlPort = 1234;

uint16_t ulPort = 2000;

ApplicationContainer clientApps;

ApplicationContainer serverApps;

// UDP downlink flow

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

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

dlClient.SetAttribute(“MaxPackets”, UintegerValue(1000000));

clientApps.Add(dlClient.Install(ueNodes.Get(0)));

UdpServerHelper dlServer(dlPort);

serverApps.Add(dlServer.Install(enbNodes.Get(0)));

// UDP uplink flow

UdpClientHelper ulClient(enbNodes.Get(0)->GetObject<Ipv4>()->GetAddress(1, 0).GetLocal(), ulPort);

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

ulClient.SetAttribute(“MaxPackets”, UintegerValue(1000000));

clientApps.Add(ulClient.Install(ueNodes.Get(0)));

UdpServerHelper ulServer(ulPort);

serverApps.Add(ulServer.Install(enbNodes.Get(0)));

serverApps.Start(Seconds(1.0));

clientApps.Start(Seconds(1.0));

Simulator::Stop(Seconds(simTime));

Simulator::Run();

Simulator::Destroy();

return 0;

}

Step 5: Compile and Run Your Simulation

Compile your simulation script using waf:

./waf configure

./waf build

./waf –run scratch/satellite_constellation_5g

Step 6: Analyses the Output

Analyse the log output to ensure that the satellite constellation is being used and that the communication quality is suitable for a 5G network. We can use numerous tracing and logging mechanisms provided by ns3.

Finally, we clearly explained the complete procedures on how to implement the satellite constellation in 5G network and also we provide the sample reference snippet to run the simulation in ns3 tool. We will explain the approaches employed in executing the satellite constellation in 5G network across multiple simulations.