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Majority Voting-Based MAC Protocol for Exploiting Link-Layer Diversity in Wireless Networks.

Jaehyoung Park1, Yonggang Kim2, Gyungmin Kim1

  • 1School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology (GIST), 123, Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Korea.

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Summary

This study introduces a new medium access control (MAC) protocol for high-density wireless local area networks (WLANs). It enhances data transmission reliability using redundant links and error correction, improving overall network performance.

Keywords:
MAC protocolcentralized WLANlink-layer diversity combining

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Area of Science:

  • Computer Science
  • Electrical Engineering
  • Wireless Communication

Background:

  • High-density wireless local area networks (WLANs) face significant data transmission reliability issues due to increased interference from numerous nodes sharing limited radio frequency resources.
  • Conventional medium access control (MAC) protocols often discard erroneous or non-associated uplink data frames at access points (APs), hindering network efficiency.

Purpose of the Study:

  • To propose a novel MAC protocol designed to enhance uplink data transmission reliability in centralized WLAN systems.
  • To improve overall network throughput in high-density WLAN environments through adaptive mechanisms.

Main Methods:

  • Development of a MAC protocol incorporating redundant wireless links between neighboring APs and non-associated stations.
  • Implementation of a centralized control node employing a majority voting algorithm for link-layer diversity and error correction of uplink data frames.
  • Introduction of an adaptive carrier sensing ranging mechanism to optimize uplink network throughput.

Main Results:

  • The proposed MAC protocol demonstrates increased reliability in data transmission by effectively correcting erroneous uplink frames through multi-AP data aggregation.
  • The adaptive carrier sensing mechanism contributes to improved uplink network throughput in the simulated and experimental WLAN scenarios.
  • Evaluation through simulation studies and software-defined radio (SDR)-based experiments validates the protocol's performance across various WLAN conditions.

Conclusions:

  • The novel MAC protocol significantly enhances data transmission reliability and network throughput in high-density WLANs.
  • Link-layer diversity via majority voting and adaptive carrier sensing are effective strategies for overcoming interference and improving performance in dense wireless environments.
  • The findings provide a foundation for more robust and efficient future WLAN designs.