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How to Implement Hybrid satellite in OMNeT++

To implement the hybrid satellite network in OMNeT++, we need to simulate the communication among satellites and terrestrial networks, concatenating the plus-points of satellite communication (like wide coverage) with terrestrial networks (like lower latency). Below is a general guide on how to approach this, along with examples and tips:

Steps to Implement a Hybrid Satellite Network in OMNeT++

  1. Set Up OMNeT++ Environment:
    • Make sure that you have OMNeT++ installed and configured.
    • Install essential frameworks like INET or any other satellite-specific models (e.g., SatNetSim).
  2. Design the Network Architecture:
    • Develop the hybrid network topology that has the satellite, ground stations, and terrestrial network elements like routers, base stations, and mobile nodes.
    • Generate a mix of communication links containing satellite links (uplink and downlink) and terrestrial links (wired or wireless).
  3. Develop the Satellite Model:
    • Use the satellite modules offered by INET or extend them to fit the certain hybrid model.
    • Execute the satellite mobility model, which mimics the movement of satellites in orbit.
    • State the satellite communication protocols, has MAC and network layers, to manage satellite-specific challenges like long propagation delays.
  4. Configure the Hybrid Network:
    • Set up the communication parameters like bandwidth, latency, and packet loss for both satellite and terrestrial links.
    • Configure routing protocols that handle the communication amongst satellite and terrestrial networks, making sure optimal path selection.
  5. Implement Communication Scenarios:
    • Develop scenarios to examine the hybrid network like data transmission from a mobile node on Earth to a satellite and then to another terrestrial node.
    • Simulate handover situations where a node switches amongst terrestrial and satellite networks.
  6. Run Simulations:
    • Execute the simulation with difficult configurations to assess the performance of the hybrid satellite network.
    • Collect metrics like throughput, delay, jitter, and packet delivery ratio.
  7. Analyze and Visualize Results:
    • Use OMNeT++’s built-in tools or external tools like MATLAB for detailed analysis.
    • Visualize the network actions and performance metrics to understand the impact of various parameters on the hybrid network.

Example Configuration

Here’s a simple example of configuring a hybrid satellite network:

network = HybridSatelliteNetwork

sim-time-limit = 100s

[Config HybridSatelliteNetwork]

*.numNodes = 5

*.node[0].type = “GroundStation”

*.node[1].type = “MobileNode”

*.node[2].type = “Satellite”

*.node[3].type = “Router”

*.node[4].type = “BaseStation”

*.node[0].mobility.x = 1000m

*.node[0].mobility.y = 2000m

*.node[1].mobility.x = 500m

*.node[1].mobility.y = 1000m

*.node[2].mobility.x = 0m

*.node[2].mobility.y = 3000km

*.node[3].mobility.x = 1200m

*.node[3].mobility.y = 800m

*.node[4].mobility.x = 1500m

*.node[4].mobility.y = 1200m

*.node[2].mobility.speed = 7.8km/s

*.node[2].mobility.type = “LEO”

*.node[0].radio.transmitter.power = 1.0W

*.node[2].radio.transmitter.power = 10.0W

*.node[4].radio.transmitter.power = 2.0W

# Define the connections between nodes

connections = [

{ srcNode = “node[0]”, destNode = “node[2]”, channelType = “SatelliteChannel” },

{ srcNode = “node[1]”, destNode = “node[4]”, channelType = “WiFiChannel” },

{ srcNode = “node[2]”, destNode = “node[3]”, channelType = “SatelliteChannel” },

{ srcNode = “node[3]”, destNode = “node[4]”, channelType = “EthernetChannel” }

]

Example Scenario

  1. Scenario 1: Data Transmission via Satellite
    A mobile node on Earth sends data to another node through the satellite. The simulation would concentrates on analyzing the delay and packet loss because of the satellite link.
  2. Scenario 2: Handover between Satellite and Terrestrial Network
    Mimic a mobile node moving out of the range of a terrestrial base station and switching to a satellite link. The scenario would examine the handover time and its influence on data transmission.

Tips:

  • Extend Existing Models: Begin with existing models in OMNeT++ and alter them to fit the hybrid satellite network requirements.
  • Focus on Realistic Mobility Models: Execute realistic satellite orbits and mobility patterns to precisely simulate the hybrid network.
  • Utilize Existing Protocols: Leverage existing routing and MAC protocols in OMNeT++ that are designed for satellite communication.

In this demonstration, we gathered the details for you to acquire the knowledge of the initialization and evaluation of Hybrid Satellite’s implementation in OMNeT++ using INET framework for satellite models and you can also expand the existing models for future use. We will intent to provide them through another simulation.

Get additional thesis ideas and topics related to Hybrid satellites in OMNeT++, we are available to provide implementation assistance. Please reach out to us for optimal results and performance analysis support.

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