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Neighboring and connectivity-aware routing in VANETs.

Huma Ghafoor1, Insoo Koo1, Nasir-ud-Din Gohar2

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A new routing protocol, anchor-based connectivity-aware routing (ACAR), improves packet delivery in vehicular ad hoc networks (VANETs). ACAR enhances connectivity and reduces packet loss in sparse networks for efficient vehicle-to-vehicle communication.

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Area of Science:

  • Computer Science
  • Networking
  • Mobile Computing

Background:

  • Vehicular ad hoc networks (VANETs) face challenges in maintaining route connectivity and ensuring reliable data delivery due to the dynamic nature of vehicles.
  • Existing routing protocols often struggle with sparse networks and node mobility, leading to increased packet loss and reduced communication efficiency.

Purpose of the Study:

  • To propose a novel position-based routing protocol, anchor-based connectivity-aware routing (ACAR), for VANETs.
  • To enhance route connectivity and maximize successfully delivered packets in urban vehicular environments.
  • To address challenges posed by sparse networks and mobile nodes in V2V communication.

Main Methods:

  • ACAR is a hybrid routing protocol combining greedy forwarding and store-carry-and-forward approaches.
  • It considers vehicles moving in both clockwise and anticlockwise directions within a city scenario.
  • The protocol specifically handles scenarios where network nodes leave their initial positions.

Main Results:

  • Simulation results in NS-2 demonstrate that ACAR improves the number of packets delivered to the destination compared to A-STAR.
  • ACAR achieves this improvement using fewer hops.
  • The protocol successfully delivers more long-distance packets with reasonable delay than A-STAR.

Conclusions:

  • ACAR offers a more robust and efficient routing solution for V2V communication in VANETs.
  • The protocol's ability to maintain connectivity in sparse and dynamic environments makes it superior to existing methods like A-STAR.
  • ACAR contributes to improved network performance by reducing packet drops and enhancing data delivery success rates.