How to Calculate Transmission Quality in ns3

To calculate transmission quality in ns3, we need to compute these performance metrics like throughput, packet loss, delay, jitter, and others, that liable on the particular desires in the simulated network. Get in touch with us for all kinds of projects related to ns3simulation.

Here, we provide the procedures on how to implement and gathers these parameters:

Step-by-Step Guide to Calculate Transmission Quality in ns3

  1. Set up the Simulation: To generate network topology, setup the nodes and download the essential applications.
  2. Collect Metrics: To gather data throughput, packet loss, delay, and jitter by use of ns3 tools like FlowMonitor.
  3. Analyze Metrics: To calculate transmission quality metrics from the gathered data.

Example Implementation

Here is the sample setup for fundamental network simulation in ns3 and estimate the numerous transmission quality metrics:

#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/flow-monitor-module.h”

#include <iostream>

using namespace ns3;

NS_LOG_COMPONENT_DEFINE(“TransmissionQualityExample”);

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

// Set up the default simulation parameters

Time::SetResolution(Time::NS);

LogComponentEnable(“TransmissionQualityExample”, LOG_LEVEL_INFO);

// Create nodes

NodeContainer nodes;

nodes.Create(2);

// Set up the point-to-point link

PointToPointHelper pointToPoint;

pointToPoint.SetDeviceAttribute(“DataRate”, StringValue(“5Mbps”));

pointToPoint.SetChannelAttribute(“Delay”, StringValue(“2ms”));

NetDeviceContainer devices;

devices = pointToPoint.Install(nodes);

// Install the Internet stack

InternetStackHelper stack;

stack.Install(nodes);

Ipv4AddressHelper address;

address.SetBase(“10.1.1.0”, “255.255.255.0”);

Ipv4InterfaceContainer interfaces = address.Assign(devices);

// Set up a UDP server

uint16_t port = 9;

UdpServerHelper server(port);

ApplicationContainer serverApps = server.Install(nodes.Get(1));

serverApps.Start(Seconds(1.0));

serverApps.Stop(Seconds(10.0));

// Set up a UDP client

uint32_t packetSize = 1024; // 1 KB

uint32_t maxPacketCount = 320; // 320 KB total data

Time interPacketInterval = Seconds(0.05); // 50 ms interval

UdpClientHelper client(interfaces.GetAddress(1), port);

client.SetAttribute(“MaxPackets”, UintegerValue(maxPacketCount));

client.SetAttribute(“Interval”, TimeValue(interPacketInterval));

client.SetAttribute(“PacketSize”, UintegerValue(packetSize));

ApplicationContainer clientApps = client.Install(nodes.Get(0));

clientApps.Start(Seconds(2.0));

clientApps.Stop(Seconds(10.0));

// Set up FlowMonitor to collect QoS metrics

FlowMonitorHelper flowmon;

Ptr<FlowMonitor> monitor = flowmon.InstallAll();

Simulator::Stop(Seconds(10.0));

Simulator::Run();

// Extract metrics

monitor->CheckForLostPackets();

Ptr<Ipv4FlowClassifier>classifier=DynamicCast<Ipv4FlowClassifier>(flowmon.GetClassifier());

std::map<FlowId, FlowMonitor::FlowStats> stats = monitor->GetFlowStats();

for (auto &flow : stats) {

Ipv4FlowClassifier::FiveTuple t = classifier->FindFlow(flow.first);

std::cout << “Flow ID: ” << flow.first << ” Src Addr: ” << t.sourceAddress << ” Dst Addr: ” << t.destinationAddress << std::endl;

std::cout << “Tx Packets: ” << flow.second.txPackets << std::endl;

std::cout << “Rx Packets: ” << flow.second.rxPackets << std::endl;

std::cout << “Lost Packets: ” << flow.second.lostPackets << std::endl;

std::cout << “Throughput: ” << flow.second.rxBytes * 8.0 / 8.0 << ” bits/second” << std::endl;

std::cout << “Delay: ” << flow.second.delaySum.GetSeconds() / flow.second.rxPackets << ” s” << std::endl;

std::cout << “Jitter: ” << flow.second.jitterSum.GetSeconds() / flow.second.rxPackets << ” s” << std::endl;

}

Simulator::Destroy();

return 0;

}

Explanation:

Here, we provide the detailed description process for the transmission quality in ns3:

  1. Simulation Setup:
    • Create two nodes and connect them using a point-to-point link.
    • Install the Internet stack on both nodes and assign IP addresses.
  2. Application Setup:
    • Install a UDP server on the destination node (Node 1).
    • Install a UDP client on the source node (Node 0) to send packets to the server.
  3. FlowMonitor Setup:
    • Install FlowMonitor to collect data on the flows between nodes.
  4. Simulation Execution:
    • Run the simulation for a specified period.
  5. Extract Metrics:
    • Use FlowMonitor to extract and print metrics like transmitted packets, received packets, lost packets, throughput, delay, and jitter.

Here we had learned how to estimate the transmission quality metrics like throughput, jitter, packet loss and delay by incorporated with ns3 tools. We deliver further insights into the performance of the transmission quality across different simulation tools.

Improve your project’s performance with the expertise of our developers by reaching out to ns3simulation.com. We specialize in assisting you with calculating transmission quality in ns3tool .