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How To Implement V2x Communication In NS3

To implement V2X communication in ns-3 that provides the necessary modules to simulate such scenarios, especially through the Wi-Fi module, LTE module, and Wave (Wireless Access in Vehicular Environments) module. The following steps guide to implement V2X communication in ns-3

Step-by-Step Guide to Implement V2X Communication in ns-3

  1. Install ns-3:
    • Ensure ns-3 is installed. You can follow the installation instructions provided in previous responses.
  2. Create a Simulation Script:
    • Create a new script file, e.g., v2x-simulation.cc.
  3. Include Necessary Headers:

#include “ns3/core-module.h”

#include “ns3/network-module.h”

#include “ns3/internet-module.h”

#include “ns3/point-to-point-module.h”

#include “ns3/mobility-module.h”

#include “ns3/wave-module.h”

#include “ns3/applications-module.h”

Define the Main Function:

using namespace ns3;

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

{

  LogComponentEnable (“UdpEchoClientApplication”, LOG_LEVEL_INFO);

  LogComponentEnable (“UdpEchoServerApplication”, LOG_LEVEL_INFO);

Set Up the Network Topology:

  • Create nodes for vehicles and infrastructure:

NodeContainer vehicles;

vehicles.Create (2); // Two vehicles for V2V communication

NodeContainer rsu; // Road Side Unit for V2I communication

rsu.Create (1);

Configure Wi-Fi/WAVE for V2X Communication:

  • Configure the Wi-Fi or Wave (DSRC) devices

YansWifiChannelHelper waveChannel = YansWifiChannelHelper::Default ();

YansWifiPhyHelper wavePhy = YansWifiPhyHelper::Default ();

wavePhy.SetChannel (waveChannel.Create ());

QosWaveMacHelper waveMac = QosWaveMacHelper::Default ();

WaveHelper waveHelper = WaveHelper::Default ();

NetDeviceContainer waveDevices = waveHelper.Install (wavePhy, waveMac, vehicles);

NetDeviceContainer rsuDevices = waveHelper.Install (wavePhy, waveMac, rsu);

Install Internet Stack:

  • Install the internet stack on all nodes:

InternetStackHelper internet;

internet.Install (vehicles);

internet.Install (rsu);

Assign IP Addresses:

  • Assign IP addresses to the network devices:

Ipv4AddressHelper address;

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

Ipv4InterfaceContainer vehicleInterfaces = address.Assign (waveDevices);

Ipv4InterfaceContainer rsuInterfaces = address.Assign (rsuDevices);

Configure Mobility:

  • Set up mobility models for vehicles and the RSU:

MobilityHelper mobility;

Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator> ();

positionAlloc->Add (Vector (0.0, 0.0, 0.0));  // Vehicle 1

positionAlloc->Add (Vector (20.0, 0.0, 0.0)); // Vehicle 2

positionAlloc->Add (Vector (50.0, 0.0, 0.0)); // RSU

mobility.SetPositionAllocator (positionAlloc);

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

mobility.Install (vehicles);

mobility.Install (rsu);

Install Applications:

  • Set up a UDP echo server on the RSU and clients on the vehicles

UdpEchoServerHelper echoServer (9);

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

serverApps.Start (Seconds (1.0));

serverApps.Stop (Seconds (10.0));

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

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

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

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

ApplicationContainer clientApps = echoClient.Install (vehicles.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::Run ();

Simulator::Destroy ();

return 0;

Example Complete Script (v2x-simulation.cc):

#include “ns3/core-module.h”

#include “ns3/network-module.h”

#include “ns3/internet-module.h”

#include “ns3/point-to-point-module.h”

#include “ns3/mobility-module.h”

#include “ns3/wave-module.h”

#include “ns3/applications-module.h”

 

using namespace ns3;

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

{

  LogComponentEnable (“UdpEchoClientApplication”, LOG_LEVEL_INFO);

  LogComponentEnable (“UdpEchoServerApplication”, LOG_LEVEL_INFO);

  NodeContainer vehicles;

  vehicles.Create (2); // Two vehicles for V2V communication

  NodeContainer rsu; // Road Side Unit for V2I communication

  rsu.Create (1);

  // Configure Wi-Fi/WAVE for V2X Communication

  YansWifiChannelHelper waveChannel = YansWifiChannelHelper::Default ();

  YansWifiPhyHelper wavePhy = YansWifiPhyHelper::Default ();

  wavePhy.SetChannel (waveChannel.Create ());

  QosWaveMacHelper waveMac = QosWaveMacHelper::Default ();

  WaveHelper waveHelper = WaveHelper::Default ();

  NetDeviceContainer waveDevices = waveHelper.Install (wavePhy, waveMac, vehicles);

  NetDeviceContainer rsuDevices = waveHelper.Install (wavePhy, waveMac, rsu);

  // Install Internet Stack

  InternetStackHelper internet;

  internet.Install (vehicles);

  internet.Install (rsu);

  // Assign IP Addresses

  Ipv4AddressHelper address;

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

  Ipv4InterfaceContainer vehicleInterfaces = address.Assign (waveDevices);

  Ipv4InterfaceContainer rsuInterfaces = address.Assign (rsuDevices);

  // Configure Mobility

  MobilityHelper mobility;

  Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator> ();

  positionAlloc->Add (Vector (0.0, 0.0, 0.0));  // Vehicle 1

  positionAlloc->Add (Vector (20.0, 0.0, 0.0)); // Vehicle 2

  positionAlloc->Add (Vector (50.0, 0.0, 0.0)); // RSU

  mobility.SetPositionAllocator (positionAlloc);

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

  mobility.Install (vehicles);

  mobility.Install (rsu);

  // Install Applications

  UdpEchoServerHelper echoServer (9);

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

  serverApps.Start (Seconds (1.0));

  serverApps.Stop (Seconds (10.0));

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

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

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

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

 

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

  clientApps.Start (Seconds (2.0));

  clientApps.Stop (Seconds (10.0));

  Simulator::Run ();

  Simulator::Destroy ();

  return 0;

}

Explanation:

Here we have enlightened the process of implementing V2X in ns-3

  1. Network Configuration:
    • Nodes are created for vehicles and RSUs.
    • Wi-Fi or WAVE devices are configured for V2X communication.
  2. Internet Stack and IP Configuration:
    • The internet stack is installed on all nodes, and IP addresses are assigned.
  3. Mobility:
    • The mobility model is set to place the vehicles and RSU at specific positions.
  4. Applications:
    • A UDP echo server is installed on the RSU, and UDP echo clients are installed on the vehicles to simulate V2I communication.

 Atlast, We all know the implementation of V2X in ns-3 and simulate with such scenarios through WiFi module, LTE module, and Wave (Wireless Access in Vehicular Environments) module.Get best implementation done by our team.