How to Implement Network QoE Attainment in ns3

To implement the Network Quality of Experience (QoE) in ns3 has encompasses the setup a network topology, creating the traffic, and using proper metrics and tools to measure user experience. The Qoe is usually concentrate on user-centric metrics like latency, jitter, packet loss, and perceived quality of multimedia applications.

We utilize ns3tool to incorporate the necessary simulation for your project, specifically for Network QoE Attainment support.

The given below is the procedure on how to implement the network QoE in ns3:

Step-by-Step Implementation:

Step 1: Set Up the Simulation Environment

• Make sure ns3 is installed in the computer.

Step 2: Create the Network Topology

• Generate the simple network topology using ns3. The given below is the sample script to setup the network with four nodes connected by point-to-point links.

Step 3: Write the Script

• The given below is the complete sample on how to generate and setup the network topology in ns3 with QoE settings:

#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-helper.h”

#include “ns3/traffic-control-module.h”

using namespace ns3;

NS_LOG_COMPONENT_DEFINE (“QoEExample”);

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

{

CommandLine cmd;

cmd.Parse (argc, argv);

// Create nodes

NodeContainer nodes;

nodes.Create (4);

// Create point-to-point links and set attributes

PointToPointHelper pointToPoint;

pointToPoint.SetDeviceAttribute (“DataRate”, StringValue (“10Mbps”));

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

// Install devices and links

NetDeviceContainer devices01;

devices01 = pointToPoint.Install (nodes.Get(0), nodes.Get(1));

NetDeviceContainer devices12;

devices12 = pointToPoint.Install (nodes.Get(1), nodes.Get(2));

NetDeviceContainer devices23;

devices23 = pointToPoint.Install (nodes.Get(2), nodes.Get(3));

// Install the Internet stack on the nodes

InternetStackHelper stack;

stack.Install (nodes);

// Assign IP addresses to the devices

Ipv4AddressHelper address;

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

Ipv4InterfaceContainer interfaces01 = address.Assign (devices01);

address.SetBase (“10.1.2.0”, “255.255.255.0”);

Ipv4InterfaceContainer interfaces12 = address.Assign (devices12);

address.SetBase (“10.1.3.0”, “255.255.255.0”);

Ipv4InterfaceContainer interfaces23 = address.Assign (devices23);

// Set up traffic control for QoS

TrafficControlHelper tch;

tch.SetRootQueueDisc (“ns3::FqCoDelQueueDisc”);

QueueDiscContainer qdiscs;

qdiscs = tch.Install (devices01);

qdiscs = tch.Install (devices12);

qdiscs = tch.Install (devices23);

// Create a UDP server application on node 3

UdpEchoServerHelper echoServer (9);

ApplicationContainer serverApps = echoServer.Install (nodes.Get (3));

serverApps.Start (Seconds (1.0));

serverApps.Stop (Seconds (10.0));

// Create a UDP client application on node 0

UdpEchoClientHelper echoClient (interfaces23.GetAddress (1), 9);

echoClient.SetAttribute (“MaxPackets”, UintegerValue (100));

echoClient.SetAttribute (“Interval”, TimeValue (Seconds (0.1)));

echoClient.SetAttribute (“PacketSize”, UintegerValue (1024));

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

clientApps.Start (Seconds (2.0));

clientApps.Stop (Seconds (10.0));

// Enable routing

Ipv4GlobalRoutingHelper::PopulateRoutingTables ();

// Enable Flow Monitor to collect performance metrics

FlowMonitorHelper flowmonHelper;

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

// Run the simulation

Simulator::Run ();

// Output Flow Monitor statistics

monitor->CheckForLostPackets ();

Ptr<Ipv4FlowClassifier> classifier = DynamicCast<Ipv4FlowClassifier> (flowmonHelper.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);

std::cout << “Flow ID: ” << i->first << ” Source Address: ” << t.sourceAddress << ” Destination Address: ” << t.destinationAddress << std::endl;

std::cout << “Tx Packets = ” << i->second.txPackets << std::endl;

std::cout << “Rx Packets = ” << i->second.rxPackets << std::endl;

std::cout << “Throughput: ” << i->second.rxBytes * 8.0 / (i->second.timeLastRxPacket.GetSeconds () – i->second.timeFirstTxPacket.GetSeconds ()) / 1024 / 1024 << ” Mbps” << std::endl;

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

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

std::cout << “Packet Loss Ratio: ” << (i->second.txPackets – i->second.rxPackets) / (double)i->second.txPackets << std::endl;

}

// Clean up the simulation

Simulator::Destroy ();

return 0;

}

Explanation:

1. Create Nodes and Links:

1. • Create four nodes and connect them using point-to-point links.

2. Install the Internet Stack:

1. • Install the Internet stack on the nodes.

3. Assign IP Addresses:

1. • Assign IP addresses to the devices.

4. Set Up Traffic Control for QoS:

1. • Use TrafficControlHelper to set up a queue discipline (e.g., FQ-CoDel) to manage traffic and ensure QoS.

5. Create Applications:

1. • Create a UDP server application on node 3 and a UDP client application on node 0 to generate traffic.

6. Enable Routing:

1. • Populate routing tables to enable communication between nodes.

7. Enable Flow Monitor:

1. • Use Flow Monitor to collect performance metrics such as throughput, packet loss, delay, and jitter.

8. Run the Simulation:

1. • Run the simulation and output Flow Monitor statistics.

Step 4: Compile and Run the Script

1. Save the script as qoe-example.cc in the scratch directory of your ns-3 installation.
2. Compile the script using the following commands:

./waf configure

./waf build

./waf –run qoe-example

Step 5: Analyze the Results

• After running the simulation, the script will output performance metrics such as the number of transmitted and received packets, throughput, delay, jitter, and packet loss ratio. We can further estimate the data to understand the QoE of the network.

At last, we all know how the Network QoE Attainment performs in ns3 and further we support and provide all kinds of advanced Network QoE Attainments.

We possess all the necessary tools and resources to conduct performance analysis, and our specialists guarantee the successful completion of your project, focusing on user-centric metrics such as latency, jitter, packet loss, and perceived quality of multimedia applications. Our developers can offer you a practical explanation.