How to Start Wireless Topology Projects using NS3

To create a Wireless Topology in NS-3 models the connectivity and communication among nodes utilized their wireless topology technologies like as Wi-Fi, LTE, or 5G. Wireless topologies can be used for environments such as ad-hoc networks, sensor networks, or mobile communication systems.

Steps to Start Wireless Topology Projects using NS3

Step 1: Set Up NS-3

  1. Install NS-3:
    • Download NS-3.
    • Build NS-3:

./waf configure

./waf build

  1. Verify Installation: Test NS-3 with a basic example:

./waf –run scratch/my_first

Step 2: Understand Wireless Topology

  • Common Wireless Topologies:
    • Ad-hoc: The nodes are communicating directly deprived of a base station.
    • Infrastructure: The nodes are communicated by an access point.
    • Mesh: The mesh nodes are act as relays to spread the network coverage.
    • Clustered: The Groups of nodes communicate by cluster heads.

Step 3: Plan the Topology

  1. Define the structure:
    • Number of nodes such as 10 nodes.
    • Deployment area like as 500×500 meters.
  2. Choose communication type:
    • Select the communication type Ad-hoc, infrastructure, or mesh topology.
  3. Set simulation goals:
    • Estimate the throughput, delay, and packet delivery ratio.

Step 4: Set Up the Wireless Topology

  1. Create Nodes: State the nodes in the wireless network.

NodeContainer nodes;

uint32_t numNodes = 10; // Number of wireless nodes

nodes.Create(numNodes);

  1. Set Up Wireless Devices: Utilized their setting wireless devices for Wi-Fi module to setting wireless communication.

WifiHelper wifi;

wifi.SetStandard(WIFI_PHY_STANDARD_80211b);

YansWifiPhyHelper phy = YansWifiPhyHelper::Default();

phy.Set(“RxGain”, DoubleValue(-10)); // Adjust receiver gain for signal strength

YansWifiChannelHelper channel = YansWifiChannelHelper::Default();

phy.SetChannel(channel.Create());

WifiMacHelper mac;

mac.SetType(“ns3::AdhocWifiMac”); // Use Ad-hoc MAC for direct communication

NetDeviceContainer devices = wifi.Install(phy, mac, nodes);

  1. Set Up Node Mobility: Deploy nodes in the replication area with a mobility model.

MobilityHelper mobility;

mobility.SetPositionAllocator(“ns3::RandomRectanglePositionAllocator”,

“X”, StringValue(“ns3::UniformRandomVariable[Min=0.0|Max=500.0]”),

“Y”, StringValue(“ns3::UniformRandomVariable[Min=0.0|Max=500.0]”));

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

mobility.Install(nodes);

  1. Install Internet Stack: Improve the Internet stack to enable IP-based communication.

InternetStackHelper stack;

stack.Install(nodes);

Ipv4AddressHelper address;

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

Ipv4InterfaceContainer interfaces = address.Assign(devices);

Step 5: Simulate Traffic

  1. Set Up Applications: State the traffic flows among nodes.
    • UDP Echo Example:

UdpEchoServerHelper echoServer(9); // Port 9

ApplicationContainer serverApp = echoServer.Install(nodes.Get(0)); // Server on Node 0

serverApp.Start(Seconds(1.0));

serverApp.Stop(Seconds(10.0));

UdpEchoClientHelper echoClient(interfaces.GetAddress(0), 9); // Server’s IP

echoClient.SetAttribute(“MaxPackets”, UintegerValue(10));

echoClient.SetAttribute(“Interval”, TimeValue(Seconds(1.0)));

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

ApplicationContainer clientApp = echoClient.Install(nodes.Get(5)); // Client on Node 5

clientApp.Start(Seconds(2.0));

clientApp.Stop(Seconds(10.0));

  1. Use Flow Monitor: Calculate their throughput, delay, and packet loss.

FlowMonitorHelper flowmon;

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

monitor->SerializeToXmlFile(“wireless_topology_flowmon.xml”, true, true);

Step 6: Run and Analyze

  1. Run the Simulation:

Simulator::Run();

Simulator::Destroy();

  1. Enable Packet Capture: Save .pcap files for traffic analysis.

phy.EnablePcapAll(“wireless_topology”);

  1. Analyze Results: Utilized for this results to Flow Monitor and packet traces we estimate their performance.

Example: Minimal NS-3 Script for Wireless Topology

#include “ns3/core-module.h”

#include “ns3/network-module.h”

#include “ns3/internet-module.h”

#include “ns3/wifi-module.h”

#include “ns3/mobility-module.h”

#include “ns3/applications-module.h”

#include “ns3/flow-monitor-module.h”

using namespace ns3;

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

uint32_t numNodes = 10;

// Create nodes

NodeContainer nodes;

nodes.Create(numNodes);

// Configure Wi-Fi

WifiHelper wifi;

wifi.SetStandard(WIFI_PHY_STANDARD_80211b);

YansWifiPhyHelper phy = YansWifiPhyHelper::Default();

phy.Set(“RxGain”, DoubleValue(-10));

YansWifiChannelHelper channel = YansWifiChannelHelper::Default();

phy.SetChannel(channel.Create());

WifiMacHelper mac;

mac.SetType(“ns3::AdhocWifiMac”);

NetDeviceContainer devices = wifi.Install(phy, mac, nodes);

// Configure mobility

MobilityHelper mobility;

mobility.SetPositionAllocator(“ns3::RandomRectanglePositionAllocator”,

“X”, StringValue(“ns3::UniformRandomVariable[Min=0.0|Max=500.0]”),

“Y”, StringValue(“ns3::UniformRandomVariable[Min=0.0|Max=500.0]”));

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

mobility.Install(nodes);

// Install 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 UDP echo server and client

UdpEchoServerHelper echoServer(9);

ApplicationContainer serverApp = echoServer.Install(nodes.Get(0));

serverApp.Start(Seconds(1.0));

serverApp.Stop(Seconds(10.0));

UdpEchoClientHelper echoClient(interfaces.GetAddress(0), 9);

echoClient.SetAttribute(“MaxPackets”, UintegerValue(10));

echoClient.SetAttribute(“Interval”, TimeValue(Seconds(1.0)));

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

ApplicationContainer clientApp = echoClient.Install(nodes.Get(5));

clientApp.Start(Seconds(2.0));

clientApp.Stop(Seconds(10.0));

// Enable Flow Monitor

FlowMonitorHelper flowmon;

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

monitor->SerializeToXmlFile(“wireless_topology_flowmon.xml”, true, true);

// Enable packet capture

phy.EnablePcapAll(“wireless_topology”);

// Run simulation

Simulator::Run();

Simulator::Destroy();

return 0;

}

we give the complete detailed procedures to simulate the wireless topology project which were simulated and analyse the outcomes using the tool of NS3.

Ensure that you provide all pertinent information regarding your Wireless Topology Projects utilizing NS3 to phdprojects.org, and we guarantee to achieve the best possible outcomes. We specialize in Wi-Fi, LTE, and 5G technologies, and we will support you throughout the entire process until the successful completion of your project.