How to Implement M2M Radio Link in ns3

To implement the M2M (Machine-to-Machine) radio link in ns3 has encompasses to setup the network where devices interact directly with each other without human mediation. This is usually complete in numerous wireless technology scenarios that were supported by ns3 tool like Wi-Fi, LTE, or ZigBee. The given below is the complete procedure on implementing an M2M radio link using Wi-Fi in ns3.

Step-by-Step Implementation:

1. Set up ns3 Environment

Make sure ns3 is installed in the computer.

2. Create a New Simulation Script

Create a new C++ script for your simulation. For this example, we will use C++.

3. Include Necessary Headers

Include the necessary ns-3 headers in your script.

#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”

4.      Define the Network Topology

Set up the basic network topology, including nodes, devices, and links.

using namespace ns3;

NS_LOG_COMPONENT_DEFINE (“M2MExample”);

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

CommandLine cmd;

cmd.Parse (argc, argv);

// Create nodes

NodeContainer m2mNodes;

m2mNodes.Create (2);

// Set up Wi-Fi

WifiHelper wifi;

wifi.SetStandard (WIFI_STANDARD_80211n);

YansWifiChannelHelper channel = YansWifiChannelHelper::Default ();

YansWifiPhyHelper phy = YansWifiPhyHelper::Default ();

phy.SetChannel (channel.Create ());

WifiMacHelper mac;

Ssid ssid = Ssid (“ns3-M2M”);

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

NetDeviceContainer devices = wifi.Install (phy, mac, m2mNodes);

// Install the internet stack

InternetStackHelper stack;

stack.Install (m2mNodes);

// Assign IP addresses

Ipv4AddressHelper address;

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

Ipv4InterfaceContainer interfaces = address.Assign (devices);

// Set 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 (m2mNodes);

// Install applications

uint16_t port = 9; // Discard port

UdpServerHelper server (port);

ApplicationContainer serverApp = server.Install (m2mNodes.Get (1));

serverApp.Start (Seconds (1.0));

serverApp.Stop (Seconds (10.0));

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

client.SetAttribute (“MaxPackets”, UintegerValue (320));

client.SetAttribute (“Interval”, TimeValue (Seconds (0.05)));

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

ApplicationContainer clientApp = client.Install (m2mNodes.Get (0));

clientApp.Start (Seconds (2.0));

clientApp.Stop (Seconds (10.0));

// Enable pcap tracing

phy.EnablePcap (“m2m-radio-link”, devices);

// Run simulation

Simulator::Stop (Seconds (10.0));

Simulator::Run ();

Simulator::Destroy ();

return 0;

}

Explanation

• Network Topology: The script sets up a simple network topology with two nodes, representing M2M devices.
• Wi-Fi Setup: The script configures Wi-Fi for the M2M communication using the WifiHelper, YansWifiChannelHelper, and WifiMacHelper classes. The Wi-Fi standard used here is 802.11n.
• Mobility: The nodes are assigned fixed positions using the ConstantPositionMobilityModel, simulating stationary M2M devices.
• Applications: A UDP server and client are set up on the nodes to simulate M2M communication. The client sends packets to the server.
• PCAP Tracing: PCAP tracing is enabled to capture packets for analysis.

5.      Build and Run the Script

Save the script and build it using the ns-3 build system (waf).

./waf configure

./waf build

./waf –run your-script-name

In the whole, we clearly discussed about how the M2M radio link network can interact directly with each other without human mediation in wireless technology using the ns3 framework. We provide and support elaborated information regarding the M2M radio link.

We have successfully worked on M2M Radio Link in ns3, achieving optimal implementation results and conducting comparative analysis. Our design allows for seamless integration with Wi-Fi, LTE, or ZigBee, providing versatility and efficiency in your work.