How to Start Epidemic Protocol Projects Using NS3

To start an epidemic protocol project in NS3 that has contains to execute or replicate the protocols stimulated by the epidemic spreading principles. These protocols are generally utilized in networks like delay-tolerant networks (DTNs), mobile ad-hoc networks (MANETs), and opportunistic networks in which nodes swap information in a same manner to how diseases distribute within a population.

We will walk you through the stepwise method to get started the Epidemic Protocol Projects in NS3:

Steps to Start Epidemic Protocol Projects in NS3

1. Understand Epidemic Protocols

• What is an Epidemic Protocol?
  • A data dissemination protocol in which nodes distribute the information including its neighbors once they inherit contact.
  • It is appropriate for situations with intermittent connectivity, where nodes perform like carriers of information while waiting for they meet a recipient.
• Key Features:
  • Redundancy: Data is distributed to several nodes to maximize the delivery probability.
  • Scalability: In sparse or mobile networks, it successfully functions.
  • Trade-off: High redundancy can be directed to resource wastage such as bandwidth, storage.

2. Set Up NS3

• Install NS3:
  • Go to nsnam.org to download and install NS3.
• Verify Installation:

./waf –run scratch/test-example

• Key Modules for Epidemic Protocols:
  • wifi: It supports for wireless connectivity.
  • mobility: These module helps for node movement and contact replication.
  • internet: For packet handling and IP stack, it is used.

3. Plan Your Epidemic Protocol Project

• Define Objectives:
  • To replicate the data dissemination within a sparse network.
  • Measure the performance indicators such as delivery ratio, latency, and overhead.
• Topology:
  • We can utilise mobile nodes including random or controlled movement patterns.
• Simulation Scenario:
  • Intermittent connectivity.
  • Nodes taking messages while waiting for they meet others.

4. Write a Basic Epidemic Protocol Simulation

• Example: Basic Epidemic Protocol Framework

#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”

using namespace ns3;

void SendPacket(Ptr<Socket> socket, Address peerAddress) {

Ptr<Packet> packet = Create<Packet>(1024); // 1 KB packet

socket->SendTo(packet, 0, peerAddress);

NS_LOG_INFO(“Packet sent to ” << InetSocketAddress::ConvertFrom(peerAddress).GetIpv4());

}

void ReceivePacket(Ptr<Socket> socket) {

Ptr<Packet> packet;

Address from;

while ((packet = socket->RecvFrom(from))) {

NS_LOG_INFO(“Packet received from ” << InetSocketAddress::ConvertFrom(from).GetIpv4());

}

}

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

LogComponentEnable(“EpidemicProtocol”, LOG_LEVEL_INFO);

uint32_t nNodes = 10;

double simulationTime = 20.0;

NodeContainer nodes;

nodes.Create(nNodes);

WifiHelper wifi;

wifi.SetStandard(WIFI_PHY_STANDARD_80211b);

WifiMacHelper wifiMac;

YansWifiPhyHelper wifiPhy = YansWifiPhyHelper::Default();

YansWifiChannelHelper wifiChannel = YansWifiChannelHelper::Default();

wifiPhy.SetChannel(wifiChannel.Create());

wifiMac.SetType(“ns3::AdhocWifiMac”);

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

MobilityHelper mobility;

mobility.SetMobilityModel(“ns3::RandomWaypointMobilityModel”,

“Speed”, StringValue(“ns3::UniformRandomVariable[Min=1.0|Max=3.0]”),

“Pause”, StringValue(“ns3::ConstantRandomVariable[Constant=2.0]”),

“PositionAllocator”, StringValue(“ns3::RandomRectanglePositionAllocator”));

mobility.Install(nodes);

InternetStackHelper stack;

stack.Install(nodes);

Ipv4AddressHelper ipv4;

ipv4.SetBase(“10.1.1.0”, “255.255.255.0”);

ipv4.Assign(devices);

// Setup sockets for epidemic communication

TypeId tid = TypeId::LookupByName(“ns3::UdpSocketFactory”);

Ptr<Socket> recvSocket = Socket::CreateSocket(nodes.Get(1), tid);

InetSocketAddress local = InetSocketAddress(Ipv4Address::GetAny(), 8080);

recvSocket->Bind(local);

recvSocket->SetRecvCallback(MakeCallback(&ReceivePacket));

Ptr<Socket> sendSocket = Socket::CreateSocket(nodes.Get(0), tid);

InetSocketAddress peerAddress = InetSocketAddress(Ipv4Address(“10.1.1.2”), 8080);

Simulator::Schedule(Seconds(5.0), &SendPacket, sendSocket, peerAddress);

Simulator::Stop(Seconds(simulationTime));

Simulator::Run();

Simulator::Destroy();

return 0;

}

5. Implement the Epidemic Protocol Logic

• Key Components:
  • Buffer Management:
    • It sustains a list of messages each node transfer.
    • Make use of unique message IDs to avoid duplicate transmissions.
  • Contact Detection:
    • Activate data exchange as two nodes inherit interaction range.
  • Flooding Mechanism:
    • Broadcast messages to every encountered node.
• Extend NS3 Functionality:
  • Override Socket or Application classes, managing the epidemic data carrier.

6. Test and Debug

• Enable Logging:

export NS_LOG=EpidemicProtocol=level_all

./waf –run scratch/epidemic-protocol

• Analyze Data Flows:
  • Confirm the packet dissemination to utilize FlowMonitor or PCAP files.

7. Performance Metrics

• Metrics to Evaluate:
  • Delivery Ratio: Measure the ratio of effectively distributed messages.
  • Average Delay: Assess how long time it takes distributing messages.
  • Overhead: Compute the volume of redundant transmissions.
• For metric collection, we can utilise tools such as FlowMonitor.

8. Advanced Features

• Optimizations:
  • Restrict message redundancy including strategies such as probabilistic flooding or prioritized delivery.
• Mobility Models:
  • Make use of further realistic models like GaussMarkovMobilityModel.
• Energy Efficiency:
  • We need to incorporate an energy models, computing the power consumption of nodes.

From this entire manual, we had gathered the most essential data and simplified process that will very helpful to start and execute the epidemic protocol projects using NS3 environment.

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