How to Implement Bluetooth Topology in ns3

To implement the Bluetooth topology in ns3, we need to setup a network using the Bluetooth protocol and ns3 handle and support for Bluetooth via Bluetooth Low Energy (BLE) module. We will support additional project details about how the Bluetooth topology will perform in other simulation for your projects.

Here is the procedure on how to implement the simple Bluetooth topology using ns3.

Step-by-Step Implementation

Step 1: Install ns3

• Make certain ns3 is installed in the computer.

Step 2: Create a New Simulation Script

• Create a new C++ script for your simulation.

Step 3: Include Necessary Headers

• In your script, include the necessary ns-3 headers:

#include “ns3/core-module.h”

#include “ns3/network-module.h”

#include “ns3/internet-module.h”

#include “ns3/ble-module.h”

#include “ns3/mobility-module.h”

#include “ns3/applications-module.h”

Step 4: Set Up the Bluetooth Topology

The given below is the sample setup to build a basic Bluetooth topology with numerous nodes using namespace ns3;

NS_LOG_COMPONENT_DEFINE (“BluetoothTopology”);

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

{

// Configure command line parameters

CommandLine cmd;

cmd.Parse (argc, argv);

// Create nodes

NodeContainer bleNodes;

bleNodes.Create (5); // Create 5 Bluetooth nodes

// Configure the Bluetooth channel and PHY layer

Ptr<BleChannelHelper> bleChannelHelper = CreateObject<BleChannelHelper> ();

bleChannelHelper->SetDistanceAttribute (0.01);

BleHelper bleHelper;

bleHelper.SetChannelHelper (bleChannelHelper);

// Install Bluetooth devices on the nodes

NetDeviceContainer bleDevices = bleHelper.Install (bleNodes);

// Install the internet stack

InternetStackHelper stack;

stack.Install (bleNodes);

// Assign IP addresses to the Bluetooth devices

Ipv4AddressHelper address;

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

Ipv4InterfaceContainer bleInterfaces = address.Assign (bleDevices);

// Configure mobility

MobilityHelper mobility;

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::ConstantPositionMobilityModel”);

mobility.Install (bleNodes);

// Set up applications (e.g., UDP echo server and client)

uint16_t port = 9; // Port number for applications

// Install UDP Echo Server on the first Bluetooth node

UdpEchoServerHelper echoServer (port);

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

serverApps.Start (Seconds (1.0));

serverApps.Stop (Seconds (10.0));

// Install UDP Echo Clients on other Bluetooth nodes to communicate with the first node

for (uint32_t i = 1; i < bleNodes.GetN (); ++i)

{

UdpEchoClientHelper echoClient (bleInterfaces.GetAddress (0), port);

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

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

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

ApplicationContainer clientApps = echoClient.Install (bleNodes.Get (i));

clientApps.Start (Seconds (2.0 + i)); // Stagger start times

clientApps.Stop (Seconds (10.0));

}

// Run simulation

Simulator::Stop (Seconds (10.0));

Simulator::Run ();

Simulator::Destroy ();

return 0;

}

Step 5: Build and Run the Simulation

1. Save the script as bluetooth-topology.cc.
2. Build the script using waf:

./waf configure –enable-examples

./waf build

Run the simulation:

./waf –run scratch/bluetooth-topology

Explanation of the Script

• Node Creation: Creates five Bluetooth nodes.
• Bluetooth Channel and PHY Layer: Configures the Bluetooth channel and PHY layer using BleChannelHelper and BleHelper.
• Internet Stack: Installs the internet stack on all nodes.
• IP Addressing: Assigns IP addresses to the Bluetooth devices.
• Mobility Model: Sets the position of nodes using GridPositionAllocator and ConstantPositionMobilityModel.
• Applications: Sets up a UDP echo server on the first Bluetooth node and UDP echo clients on the other nodes to demonstrate communication between nodes.

Here, we understand how the Bluetooth topology in ns3 will be implemented and executed in ns3 and it manage the Bluetooth through BLE module.

BlueTooth Low Energy (BLE) module for your project work are undertaken by us so share your details.