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Weight-Based PA-GPSR Protocol Improvement Method in VANET.

Wenzhu Zhang1, Leilei Jiang1, Xi Song1

  • 1School of Information and Control Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China.

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Summary
This summary is machine-generated.

A new Weight-based Path-Aware Greedy Perimeter Stateless Routing Protocol (W-PAGPSR) enhances Vehicle Ad-hoc Networks (VANETs). This protocol improves routing stability and data transmission efficiency in sparse urban environments.

Keywords:
VANETgreedy strategypath awareperimeter strategyrouting protocol

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Area of Science:

  • Intelligent Transportation Systems
  • Wireless Communication Networks
  • Network Routing Protocols

Background:

  • Vehicle Ad-hoc Networks (VANETs) are crucial for intelligent transportation systems, but routing efficiency is challenged by node mobility and density variations.
  • Existing protocols like GPSR and PA-GPSR struggle with local optimality and routing loops in sparse urban VANETs.

Purpose of the Study:

  • To propose a Weight-based Path-Aware Greedy Perimeter Stateless Routing Protocol (W-PAGPSR) to address the limitations of existing routing protocols in VANETs.
  • To enhance routing stability and data transmission efficiency in sparse urban VANET environments.

Main Methods:

  • The W-PAGPSR protocol operates in two stages: routing establishment and routing maintenance.
  • Routing establishment uses node distance, density, communication duration, and movement direction for reliable next-hop selection via a weight greedy strategy.
  • Routing maintenance employs data packet delivery angle and reliable node density for next-hop selection using a weight perimeter strategy to achieve routing repair.

Main Results:

  • W-PAGPSR demonstrated significant performance improvements over GPSR, MM-GPSR, and PA-GPSR.
  • Reductions in packet loss rate averaged 24.47%, 25.02%, and 14.12%, respectively.
  • Average end-to-end delay decreased by 48.34%, 79.96%, and 21.45%, while network throughput increased by 47.68%, 58.39%, and 20.33%, respectively.

Conclusions:

  • The proposed W-PAGPSR protocol effectively improves network throughput in VANETs.
  • W-PAGPSR successfully reduces average end-to-end delay and packet loss rate, outperforming existing protocols in sparse urban conditions.