Journal of Advanced Navigation Technology (한국항행학회논문지)

The Korean Navigation Institute (한국항행학회)
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A Primary Channel Selection Scheme for Wideband WLAN V2X Communication

무선랜 기반 광대역 V2X 통신에서의 채널 접근 동작을 위한 주 채널 설정 기법

  • Hong, Hanseul (School of Electrical & Electronic Engineering, Yonsei University) ;
  • Kim, Ronny Yongho (Department of Railroad Electrical & Electronic Engineering, Korea National University of Transportation) ;
  • Ahn, Woojin (Korea Railroad Research Institute)
  • 홍한슬 (연세대학교 전기전자공학과) ;
  • 김용호 (한국교통대학교 철도전기전자공학과) ;
  • 안우진 (한국철도기술연구원)
  • Received : 2019.11.20
  • Accepted : 2019.12.21
  • Published : 2019.12.30
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Abstract

With the proliferation of intelligent transportation system (ITS) with dedicated short-range communication (DSRC) deployment, there are various applications requiring different throughput and reliability performance. To meet the enhanced throughput requirements in newly generated applications, IEEE 802.11bd is proposed to standardize for support of enhanced throughput and latency, preserving the fairness with previously deployed WLAN V2X devices. One of the main features of IEEE 802.11 bd is 20 MHz transmission to support the high data rate. In this paper, the primary channel selection method is proposed to guarantee the fairness with frame transmissions with 10 MHz bandwith including communications in WLAN V2X devices deployed with IEEE 802.11p. Simulation shows that the proposed channel access method for 20 MHz transmission with primary selection preserves the fairness without the change of channel access method in wide-band transmission.

DSRC를 활용한 ITS 시스템이 확산됨에 따라, 더 높은 전송 용량 및 전송 신뢰도를 요구하는 ITS 서비스가 개발되고 있다. 이에 따라, 차량 통신 환경에서 높은 전송 용량 및 신뢰성을 지원하는 한편 기존 무선랜 차량 단말들과의 형평성을 보장하기 위해, IEEE에서는 차세대 차량 통신 표준인 IEEE 802.11bd가 제안되었으며, 표준화가 개발 및 진행 중이다. 특히, 높은 전송 용량 지원을 위해, IEEE 802.11bd에서는 20 MHz 대역을 활용한 전송 동작이 지원 및 반영되었다. 본 논문에서는 기존 무선랜 채널 확장 방법을 활용하면서도 차량 통신 환경에서의 기존 단말과의 채널 접근 방법에서의 공정성을 만족하기 위한 채널 접근 방법을 제시한다. 특히, 채널 점유 비율에 따른 주 채널 설정 방법을 통해 기존 단말의 채널 접근 방법과의 공정성을 유지할 수 있다.

Keywords

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