How to Implement 3D MANET Massive in ns3

To implement a 3D Mobile Ad hoc Network (MANET) with a large number of users in ns3, we need to create a network, in that nodes have to dynamically communicate with each other and have to freely move in a three-dimensional space. This setup has been used to study the performance of MANET protocols and applications in a 3D environment with a massive number of users.

The following steps will guide on how to implement 3D MANET in ns3 environment:

Step-by-step guide to implement 3D MANET

Step 1: Install ns3

Make sure ns3 is installed on the system.

Step 2: Set Up the Simulation Environment

Create a new simulation script or modify an existing one. This script will define the network topology, nodes, mobility models, and communication protocols.

Step 3: Define Network Topology

Create nodes and define the network topology, focusing on the creation of a 3D environment. An example given below for setting up a basic MANET with a large number of nodes in a 3D space.

#include “ns3/core-module.h”

#include “ns3/network-module.h”

#include “ns3/internet-module.h”

#include “ns3/mobility-module.h”

#include “ns3/olsr-helper.h”

#include “ns3/applications-module.h”

#include “ns3/flow-monitor-module.h”

using namespace ns3;

NS_LOG_COMPONENT_DEFINE (“ThreeDManetExample”);

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

{

// Enable logging

LogComponentEnable (“ThreeDManetExample”, LOG_LEVEL_INFO);

// Set the number of nodes

uint32_t numNodes = 100;

// Create nodes

NodeContainer nodes;

nodes.Create (numNodes);

// Set up wireless PHY and MAC layers

WifiHelper wifi;

wifi.SetStandard (WIFI_PHY_STANDARD_80211b);

YansWifiPhyHelper wifiPhy = YansWifiPhyHelper::Default ();

YansWifiChannelHelper wifiChannel = YansWifiChannelHelper::Default ();

wifiPhy.SetChannel (wifiChannel.Create ());

WifiMacHelper wifiMac;

wifiMac.SetType (“ns3::AdhocWifiMac”);

 

NetDeviceContainer devices;

devices = wifi.Install (wifiPhy, wifiMac, nodes);

// Install Internet stack

InternetStackHelper internet;

OlsrHelper olsr;

internet.SetRoutingHelper (olsr); // Enable OLSR routing protocol

internet.Install (nodes);

// Assign IP addresses

Ipv4AddressHelper address;

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

Ipv4InterfaceContainer interfaces = address.Assign (devices);

// Set up mobility model

MobilityHelper mobility;

mobility.SetPositionAllocator (“ns3::RandomBoxPositionAllocator”,

“X”,StringValue (“ns3::UniformRandomVariable[Min=0.0|Max=1000.0]”),

“Y”, StringValue (“ns3::UniformRandomVariable[Min=0.0|Max=1000.0]”),

“Z”, StringValue (“ns3::UniformRandomVariable[Min=0.0|Max=1000.0]”));

mobility.SetMobilityModel (“ns3::GaussMarkovMobilityModel”,

“Bounds”, BoxValue (Box (0, 1000, 0, 1000, 0, 1000)),

“TimeStep”, TimeValue (Seconds (0.5)),

“Alpha”, DoubleValue (0.85),

“MeanVelocity”,StringValue (“ns3::UniformRandomVariable[Min=0|Max=20]”),

“MeanDirection”,StringValue (“ns3::UniformRandomVariable[Min=0|Max=6.283185307]”),

“MeanPitch”, StringValue (“ns3::UniformRandomVariable[Min=-0.25|Max=0.25]”));

mobility.Install (nodes);

// Install and start applications on nodes

uint16_t port = 8080;

Address serverAddress (InetSocketAddress (interfaces.GetAddress (0), port));

UdpServerHelper server (port);

ApplicationContainer serverApps = server.Install (nodes.Get (0));

serverApps.Start (Seconds (1.0));

serverApps.Stop (Seconds (100.0));

UdpClientHelper client (serverAddress);

client.SetAttribute (“MaxPackets”, UintegerValue (10000));

client.SetAttribute (“Interval”, TimeValue (Seconds (0.01)));

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

 

ApplicationContainer clientApps = client.Install (nodes.Get (1));

clientApps.Start (Seconds (2.0));

clientApps.Stop (Seconds (100.0));

// Set up FlowMonitor

FlowMonitorHelper flowmon;

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

// Run the simulation

Simulator::Stop (Seconds (100.0));

Simulator::Run ();

// Print statistics

monitor->CheckForLostPackets ();

Ptr<Ipv4FlowClassifier>classifier=DynamicCast<Ipv4FlowClassifier> (flowmon.GetClassifier ());

std::map<FlowId, FlowMonitor::FlowStats> stats = monitor->GetFlowStats ();

for (std::map<FlowId, FlowMonitor::FlowStats>::const_iterator i = stats.begin (); i != stats.end (); ++i)

{

Ipv4FlowClassifier::FiveTuple t = classifier->FindFlow (i->first);

NS_LOG_UNCOND (“Flow ” << i->first << ” (” << t.sourceAddress << ” -> ” << t.destinationAddress << “)”);

NS_LOG_UNCOND (”  Tx Packets: ” << i->second.txPackets);

NS_LOG_UNCOND (”  Tx Bytes:   ” << i->second.txBytes);

NS_LOG_UNCOND (”  Rx Packets: ” << i->second.rxPackets);

NS_LOG_UNCOND (”  Rx Bytes:   ” << i->second.rxBytes);

NS_LOG_UNCOND (“Throughput: ” << i->second.rxBytes * 8.0 / (i->second.timeLastRxPacket.GetSeconds () – i->second.timeFirstTxPacket.GetSeconds ()) / 1024 / 1024  << ” Mbps”);

}

// Clean up

Simulator::Destroy ();

return 0;

}

Step 4: Set Up Mobility Models

In the example, to simulate 3D movement, we have used the GaussMarkovMobilityModel is for nodes. The parameters (bounds, time step, alpha, mean velocity, mean direction, and mean pitch) can be adjusted as needed. This model provides a realistic movement pattern for mobile nodes.

Step 5: Set Up Traffic Generation

In the example, to generate traffic a UDP server is set up on node 0, and a UDP client is set up on node 1. To simulate different types of communication, the traffic configuration can be adjusted.

Step 6: Run the Simulation

To see the effect of 3D mobility and massive users on network performance we need to compile and run the simulation script. The output will include statistics such as the number of packets transmitted and received, throughput, and any packet loss.

Finally, we all get to know he process of implementing 3D MANET in ns3 with large number of users, which uses three-dimensional space to move the nodes and dynamic communication of the nodes to study its performance for analyzing the output.

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