To implement the satellite optical network in ns3 which consists to mimic the interaction among satellites that were used as optical links. This is essential to setup the nodes to denote the satellites then configure the point to point optical links and execute the application to emulate the data transmission. The given below is the procedures on how to implement the simple simulation of satellite optical network in ns3.
Step-by-Step Implementation:
Step 1: Setup ns3 Environment
Make sure ns3 is installed in the system and check it properly configured.
git clone https://gitlab.com/nsnam/ns-3-dev.git
cd ns-3-dev
./waf configure
./waf build
Step 2: Create the Satellite Optical Network Simulation Script
We will create a script that sets up satellites with optical links, configures their mobility, and simulates data transmission between them.
#include “ns3/core-module.h”
#include “ns3/network-module.h”
#include “ns3/internet-module.h”
#include “ns3/point-to-point-module.h”
#include “ns3/applications-module.h”
#include “ns3/mobility-module.h”
#include “ns3/flow-monitor-module.h”
using namespace ns3;
NS_LOG_COMPONENT_DEFINE(“SatelliteOpticalNetworkExample”);
int main(int argc, char *argv[])
{
CommandLine cmd;
cmd.Parse(argc, argv);
// Create satellite nodes
NodeContainer satelliteNodes;
satelliteNodes.Create(3); // Three satellites
// Set up point-to-point links representing optical links
PointToPointHelper p2p;
p2p.SetDeviceAttribute(“DataRate”, StringValue(“10Gbps”));
p2p.SetChannelAttribute(“Delay”, StringValue(“5ms”)); // Optical link delay
NetDeviceContainer devices;
devices = p2p.Install(satelliteNodes.Get(0), satelliteNodes.Get(1));
devices.Add(p2p.Install(satelliteNodes.Get(1), satelliteNodes.Get(2)));
// Install the internet stack
InternetStackHelper stack;
stack.Install(satelliteNodes);
// Assign IP addresses
Ipv4AddressHelper address;
address.SetBase(“10.1.1.0”, “255.255.255.0”);
Ipv4InterfaceContainer interfaces = address.Assign(devices);
// Set up mobility model for satellites
MobilityHelper mobility;
mobility.SetMobilityModel(“ns3::ConstantPositionMobilityModel”);
mobility.Install(satelliteNodes.Get(0));
Ptr<ConstantPositionMobilityModel> pos0 = satelliteNodes.Get(0)->GetObject<ConstantPositionMobilityModel>();
pos0->SetPosition(Vector(0.0, 0.0, 1000.0));
mobility.Install(satelliteNodes.Get(1));
Ptr<ConstantPositionMobilityModel> pos1 = satelliteNodes.Get(1)->GetObject<ConstantPositionMobilityModel>();
pos1->SetPosition(Vector(1000.0, 0.0, 1000.0));
mobility.Install(satelliteNodes.Get(2));
Ptr<ConstantPositionMobilityModel> pos2 = satelliteNodes.Get(2)->GetObject<ConstantPositionMobilityModel>();
pos2->SetPosition(Vector(2000.0, 0.0, 1000.0));
// Install applications to generate traffic
uint16_t port = 9;
// Satellite 0 will send data to Satellite 2
OnOffHelper onoff(“ns3::UdpSocketFactory”, Address(InetSocketAddress(interfaces.GetAddress(1), port)));
onoff.SetConstantRate(DataRate(“1Gbps”));
ApplicationContainer apps = onoff.Install(satelliteNodes.Get(0));
apps.Start(Seconds(1.0));
apps.Stop(Seconds(10.0));
// Install packet sink on Satellite 2 to receive packets
PacketSinkHelper sink(“ns3::UdpSocketFactory”, Address(InetSocketAddress(Ipv4Address::GetAny(), port)));
apps = sink.Install(satelliteNodes.Get(2));
apps.Start(Seconds(0.0));
apps.Stop(Seconds(10.0));
// Enable FlowMonitor to measure performance metrics
FlowMonitorHelper flowmon;
Ptr<FlowMonitor> monitor = flowmon.InstallAll();
// Run the simulation
Simulator::Stop(Seconds(10.0));
Simulator::Run();
// Print per-flow statistics
monitor->CheckForLostPackets();
Ptr<Ipv4FlowClassifier> classifier = DynamicCast<Ipv4FlowClassifier>(flowmon.GetClassifier());
std::map<FlowId, FlowMonitor::FlowStats> stats = monitor->GetFlowStats();
for (std::map<FlowId, FlowMonitor::FlowStats>::const_iterator i = stats.begin(); i != stats.end(); ++i)
{
Ipv4FlowClassifier::FiveTuple t = classifier->FindFlow(i->first);
NS_LOG_UNCOND(“Flow ” << i->first << ” (” << t.sourceAddress << ” -> ” << t.destinationAddress << “)”);
NS_LOG_UNCOND(” Tx Packets: ” << i->second.txPackets);
NS_LOG_UNCOND(” Tx Bytes: ” << i->second.txBytes);
NS_LOG_UNCOND(” Rx Packets: ” << i->second.rxPackets);
NS_LOG_UNCOND(” Rx Bytes: ” << i->second.rxBytes);
NS_LOG_UNCOND(” Lost Packets: ” << i->second.lostPackets);
NS_LOG_UNCOND(” Throughput: ” << i->second.rxBytes * 8.0 / (i->second.timeLastRxPacket.GetSeconds() – i->second.timeFirstTxPacket.GetSeconds()) / 1024 / 1024 << ” Mbps”);
}
// Clean up
Simulator::Destroy();
return 0;
}
Step 3: Compile and Run the Simulation
- Compile the Simulation:
./waf configure –enable-examples
./waf build
Run the Simulation:
./waf –run scratch/satellite-optical-network-example
Step 4: Analyse Results
The simulation script sets up a satellite optical network where data is transmitted between satellites using optical links. FlowMonitor is used to collect and print out statistics about the traffic flows, such as packet loss, throughput, and delay.
Additional Considerations
To extend the functionality of your satellite optical network simulation, consider the following:
1. Advanced Mobility Models
To mimic satellite orbits, contains circular and elliptical trajectories that were executed in more realistic mobility models.
2. Dynamic Routing
To handle the changing topology of a satellite network as satellites move to incorporate with dynamic routing protocols.
3. Fault Tolerance
To handle link failures and satellite outages, safeguarding continuous communication using the fault tolerance mechanisms.
4. Traffic Patterns
Simulate different types of traffic patterns, such as VoIP, video streaming, and bulk data transfer, to study their impact on the network.
5. Quality of Service (QoS)
Apply QoS mechanisms to prioritize assured kinds of traffic and safeguard that critical data flows receive the essential bandwidth and low latency.
6. Performance Metrics
Collect and analyse additional metrics like jitter, packet delay variation, and error rates to evaluate the network performance more comprehensively.
Here, we entirely understand about satellite optical network were interact among the satellites using the optical links and then configures their mobility and simulates data transmission among them using ns3 framework. If you need any information regarding the satellite iptical network we will help to provide the data.
We offer assistance with the implementation of Satellite optical networks in the ns3 tool. Feel free to reach out to us for expert guidance on how to integrate it into your project. Our team can provide you with project ideas and help you with its execution. We specialize in setting up nodes to represent the satellites and configuring point-to-point optical links. Our writers and developers can provide practical explanations to support your understanding.