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ARNS: Adaptive Relay-Node Selection Method for Message Broadcasting in the Internet of Vehicles.

Dun Cao1, Yuchen Jiang1, Jin Wang1

  • 1School of Computer and Communication Engineering, Changsha University of Science and Technology, Changsha 410114, China.

Sensors (Basel, Switzerland)
|March 4, 2020
PubMed
Summary

This study introduces an adaptive relay-node selection (ARNS) method for efficient message broadcasting in complex road environments. ARNS significantly reduces broadcast delay and enhances packet delivery ratio by adapting to diverse road structures.

Keywords:
Internet of Vehiclesadaptive mechanismmulti-hop broadcastingrelay-node selection

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Area of Science:

  • Vehicular Ad Hoc Networks (VANETs)
  • Wireless Communication Systems
  • Network Performance Optimization

Background:

  • Existing relay-node selection methods are limited to specific road structures, hindering their real-world applicability.
  • Complex scenarios often involve multiple road structures within a sender's communication range.
  • Efficient message broadcasting is crucial for VANET applications.

Purpose of the Study:

  • To propose an adaptive relay-node selection (ARNS) method for message broadcasting in complex road scenarios.
  • To improve the performance of relay-node selection by considering diverse road structures and obstacle distributions.
  • To enhance broadcast efficiency, reduce delay, and increase packet delivery ratio in realistic VANET environments.

Main Methods:

  • Developed an adaptive relay-node selection (ARNS) method utilizing exponential partitioning.
  • Improved relay-node selection for curved roads by redefining optimal positions considering obstacle distribution.
  • Proposed a criterion for classifying road structures based on broadcast characteristics.

Main Results:

  • ARNS reduced end-to-end broadcast delay by at least 13.8% compared to beacon-based methods and 14.0% compared to 3P3B-based methods.
  • Broadcast coverage increased by 3.6-7% in curved road scenarios, with improved performance due to obstacle consideration.
  • ARNS demonstrated a higher and more stable packet delivery ratio (PDR) than existing methods.

Conclusions:

  • The proposed ARNS method effectively handles complex road structures for message broadcasting in VANETs.
  • ARNS offers significant improvements in broadcast delay, coverage, and packet delivery ratio.
  • The adaptive mechanism allows ARNS to outperform existing relay-node selection strategies in realistic scenarios.