Steps to Implement Wireless Communication in ns3

To implement the wireless communication in ns-3 consists to setup a network with nodes that makes use of Wi-Fi for communication. Here are the procedures to make a basic wireless network using Wi-Fi in ns-3 environment.

Step-by-Step Guide to Implement Wireless Communication in ns-3

Install ns-3:
- Ensure ns-3 is installed. Follow the installation instructions for ns-3 if you haven’t done so already.
Create a Simulation Script:
- Create a new script file, e.g., wireless-simulation.cc.
Include Necessary Headers:

#include “ns3/core-module.h”

#include “ns3/network-module.h”

#include “ns3/internet-module.h”

#include “ns3/mobility-module.h”

#include “ns3/wifi-module.h”

#include “ns3/applications-module.h”

Define the Main Function:

using namespace ns3;

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

{

CommandLine cmd;

cmd.Parse (argc, argv);

Set Up the Network Topology:

Create nodes and configure Wi-Fi settings

NodeContainer wifiStaNodes;

wifiStaNodes.Create (2); // Create 2 station nodes (devices)

NodeContainer wifiApNode;

wifiApNode.Create (1); // Create 1 AP node

Configure Wi-Fi Channel and PHY Layer:

Set up the Wi-Fi channel and physical layer

YansWifiChannelHelper channel = YansWifiChannelHelper::Default ();

YansWifiPhyHelper phy = YansWifiPhyHelper::Default ();

phy.SetChannel (channel.Create ());

Configure Wi-Fi MAC Layer:

Set up the MAC layer and install Wi-Fi devices on nodes:

WifiHelper wifi;

wifi.SetRemoteStationManager (“ns3::AarfWifiManager”);

WifiMacHelper mac;

Ssid ssid = Ssid (“ns-3-ssid”);

mac.SetType (“ns3::StaWifiMac”, “Ssid”, SsidValue (ssid), “ActiveProbing”, BooleanValue (false));

NetDeviceContainer staDevices = wifi.Install (phy, mac, wifiStaNodes);

mac.SetType (“ns3::ApWifiMac”, “Ssid”, SsidValue (ssid));

NetDeviceContainer apDevices = wifi.Install (phy, mac, wifiApNode);

Install Internet Stack:

Install the Internet stack on all nodes:

InternetStackHelper stack;

stack.Install (wifiApNode);

stack.Install (wifiStaNodes);

Ipv4AddressHelper address;

address.SetBase (“192.168.1.0”, “255.255.255.0”);

Ipv4InterfaceContainer staInterfaces = address.Assign (staDevices);

Ipv4InterfaceContainer apInterfaces = address.Assign (apDevices);

Configure Mobility:

Set up mobility models for the AP and station nodes

MobilityHelper mobility;

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

mobility.Install (wifiApNode);

mobility.SetPositionAllocator (“ns3::GridPositionAllocator”,

“MinX”, DoubleValue (0.0),

“MinY”, DoubleValue (0.0),

“DeltaX”, DoubleValue (5.0),

“DeltaY”, DoubleValue (10.0),

“GridWidth”, UintegerValue (3),

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

mobility.SetMobilityModel (“ns3::RandomWalk2dMobilityModel”,

“Bounds”, RectangleValue (Rectangle (-50, 50, -50, 50)));

mobility.Install (wifiStaNodes);

Install Applications:

Set up a UDP echo server on the AP node and a UDP echo client on one of the station nodes:

UdpEchoServerHelper echoServer (9);

ApplicationContainer serverApps = echoServer.Install (wifiApNode.Get (0));

serverApps.Start (Seconds (1.0));

serverApps.Stop (Seconds (10.0));

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

echoClient.SetAttribute (“MaxPackets”, UintegerValue (1));

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

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

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

clientApps.Start (Seconds (2.0));

clientApps.Stop (Seconds (10.0));

Run the Simulation:

Define the simulation stop time and start the simulator

Simulator::Stop (Seconds (10.0));

Simulator::Run ();

Simulator::Destroy ();

return 0;

Example Complete Script (wireless-simulation.cc):

Here is the sample to complete the script for wireless communication in ns-3 environment