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An improved PRoPHET routing protocol in delay tolerant network.

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This study enhances the Probability Routing Protocol using History of Encounters and Transitivity (PRoPHET) in delay-tolerant networks (DTN). By integrating epidemic routing under specific conditions, it improves message delivery speed and efficiency.

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Area of Science:

  • Computer Science
  • Networking
  • Mobile Computing

Background:

  • Delay-tolerant networks (DTN) lack guaranteed end-to-end paths, relying on store-carry-forward routing.
  • Existing protocols like PRoPHET manage packet delivery in DTNs but can be improved for speed.
  • Message dissemination in DTNs faces challenges due to intermittent connectivity and node mobility.

Purpose of the Study:

  • To enhance the message dissemination speed of the PRoPHET protocol in DTNs.
  • To investigate the impact of integrating epidemic routing under specific conditions within PRoPHET.
  • To analyze the trade-offs between delivery probability, average delay, and overhead ratio.

Main Methods:

  • A hybrid routing approach combining PRoPHET with epidemic protocol was proposed.
  • Epidemic protocol is employed for message dissemination when forwarding and hop counter values are below predefined thresholds.
  • Performance evaluation focused on delivery probability, average delay, and overhead ratio.

Main Results:

  • The proposed protocol demonstrates improvements in delivery probability compared to standard PRoPHET.
  • Average delay is reduced by employing the hybrid approach.
  • Overhead ratio is optimized through the selective use of epidemic routing.

Conclusions:

  • The integration of epidemic routing enhances PRoPHET's performance in DTNs.
  • Appropriate selection of threshold values for forwarding and hop counters is crucial for optimal results.
  • The proposed protocol offers a viable solution for faster and more efficient message dissemination in DTNs.