How to Start Mesh Topology projects Using OMNeT++

To stimulate a Mesh Topology Simulation in OMNeT++ has includes the build a network in which the nodes are interrelated to form a mesh architecture. This topology is widely used in wireless networks, like as Wireless Mesh Networks (WMNs), We assure the increase of reliability and scalability.

Here’s a step-by-step guide to start a Mesh Topology Project in OMNeT++:

Steps to Start Mesh Topology projects Using OMNeT++

  1. Understand Mesh Topology
  • Definition: In a mesh topology, each node is connected to one or additional other nodes, build a web-like architecture. It can be:
    • Full Mesh: All nodes are directly connected in the Full mesh.
    • Partial Mesh: Only few nodes are directly connected in the partial mesh.
  • Characteristics:
    • Increase the reliability and fault tolerance.
    • Redundant paths have enhanced the network resilience.
    • Increase the complex by the number of nodes.
  • Applications:
    • It contains the Wireless Mesh Networks (WMNs).
    • It provides the Ad-hoc networks.
    • Includes the IoT networks
  1. Set up OMNeT++ and INET Framework
  • Install OMNeT++: Download and set up OMNeT++ from the official website.
  • Install INET Framework:
    • The INET offers the components for wired and wireless communication.
  1. Define Project Scope

Step 3.1: Goals

  • Replicate the data transmission and routing in a mesh network.
  • Estimate the parameter metrics such as:
    • Packet delivery ratio (PDR).
    • Latency.
    • Throughput.

Step 3.2: Metrics

  • Packet Delivery Ratio (PDR): Rate of successfully delivered packets in the PDR.
  • Latency: The normal time is packets we traverse the network.
  • Throughput: Measure the throughput for data successfully is transmitted.
  1. Design the Mesh Topology

Describe the mesh network through nodes connected in either a full or partial mesh structure.

Example .ned File:

network MeshTopology {

submodules:

node[6]: StandardHost; // Mesh nodes

connections allowunconnected:

node[0].ethg++ <–> EthernetLink <–> node[1].ethg++;

node[0].ethg++ <–> EthernetLink <–> node[2].ethg++;

node[1].ethg++ <–> EthernetLink <–> node[2].ethg++;

node[1].ethg++ <–> EthernetLink <–> node[3].ethg++;

node[2].ethg++ <–> EthernetLink <–> node[3].ethg++;

node[2].ethg++ <–> EthernetLink <–> node[4].ethg++;

node[3].ethg++ <–> EthernetLink <–> node[5].ethg++;

node[4].ethg++ <–> EthernetLink <–> node[5].ethg++;

node[5].ethg++ <–> EthernetLink <–> node[0].ethg++; // Optional loop

}

  1. Configure Node Behavior

Step 5.1: Data Transmission

Use INET’s UdpBasicApp to simulate traffic between nodes.

Example .ini File Configuration:

[Config MeshTopologySimulation]

network = MeshTopology

# Traffic configuration for node[0]

**.node[0].numApps = 1

**.node[0].app[0].typename = “UdpBasicApp”

**.node[0].app[0].destAddress = “node[5]”

**.node[0].app[0].startTime = 1s

**.node[0].app[0].sendInterval = uniform(1s, 3s)

**.node[0].app[0].packetLength = 512B

# Traffic configuration for node[3]

**.node[3].numApps = 1

**.node[3].app[0].typename = “UdpBasicApp”

**.node[3].app[0].destAddress = “node[2]”

**.node[3].app[0].startTime = 2s

**.node[3].app[0].sendInterval = uniform(2s, 4s)

**.node[3].app[0].packetLength = 512B

# Sink configuration for receiving traffic

**.node[5].numApps = 1

**.node[5].app[0].typename = “UdpSink”

**.node[2].numApps = 1

**.node[2].app[0].typename = “UdpSink”

# Simulation time

sim-time-limit = 100s

  1. Run and Visualize the Simulation
  • Run the Simulation: Establish the replicate in the OMNeT++.
  • Monitor Behavior:
    • The behaviour of data packets flowing among the nodes.
    • The Routing paths are select with the network..
  1. Analyze Results

Metrics to Evaluate:

  1. Packet Delivery Ratio (PDR):
    • Measure the rate of successfully delivered packets in a PDR.
  2. Latency:
    • Calculate the time for packets we traverse the network is the latency.
  3. Throughput:
    • Examine the bandwidth used through the network for a throughput.

Visualization:

  • Use OMNeT++’s built-in tools we follow the congestion design and node interactions.
  1. Enhance the Project

Step 8.1: Add Dynamic Routing

  • Apply the routing protocol for sample AODV, DSR for dynamic path selection.
  • Used INET’s for built-in the routing protocols or built a alter one.

Step 8.2: Wireless Mesh Topology

  • Use INET’s wireless components and we replicate the wireless mesh network.

Example Wireless Configuration:

*.node[*].wlan.radio.channelNumber = 11

*.node[*].wlan.snrThreshold = 10dB

*.node[*].wlan.txPower = 20mW

*.node[*].mobility.typename = “StationaryMobility”

Step 8.3: Add Fault Tolerance

  • The fault tolerance replicates the node or connection failures and monitors the effect of congestion.
  • Apply the mechanisms we reroute the congestion around failures.

Step 8.4: Add Mobility

  • Used INET’s mobility patterns we replicate the action nodes in the mesh.

Step 8.5: Simulate Large Networks

  • Scale up the network through further nodes we examine the performance in larger mesh configurations.
  1. Example Output
  • Before Enhancements:
    • The nodes are transmission through stable routes through the predictable latency and throughput.
  • After Enhancements:
    • Routing protocols adjust the failures or dynamic environment, enable the reliable communication.

Would you like help implementing specific features, such as dynamic routing, wireless communication, or fault tolerance in the mesh topology?

In the entire page will talk about how effectively Mesh topology will perform in the tool of OMNeT++ tool and also we provide the sample snippets, example overview and the future consideration for deploying the Mesh topology. If you have any query regarding the Mesh topology we will clarify it.