한국통신학회논문지 (The Journal of Korean Institute of Communications and Information Sciences)

  • 제40권7호
  • /
  • Pages.1276-1285
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  • 2015
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  • 1226-4717(pISSN)
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  • 2287-3880(eISSN)
한국통신학회 (The Korean Institute of Commucations and Information Sciences)
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무선랜 시스템에서 전이중 통신을 위한 MAC 프로토콜 분석

Medium Access Control Protocols for Full-Duplex Communications in WLAN Systems: Approaches and Challenges

  • Kim, Wonjung (Korea University School of Electrical Engineering) ;
  • Song, Taewon (Korea University School of Electrical Engineering) ;
  • Kim, Taeyoon (Korea University School of Electrical Engineering) ;
  • Pack, Sangheon (Korea University School of Electrical Engineering)
  • 투고 : 2015.06.12
  • 심사 : 2015.07.21
  • 발행 : 2015.07.31
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⟨ 이전 논문 다음 논문 ⟩

초록

최근 들어, 자기 간섭 제어 기술의 발달로 인하여 PHY 계층에서는 full-duplex 통신이 가능한 수준에 도달하였다. 이러한 full-duplex 통신을 지원하기 위한 다양한 MAC 계층의 기술들이 활발히 연구 중이다. 본 논문에서는 무선랜 (WLAN) 시스템에서 full-duplex 통신의 특징과 이로 인하여 발생하는 문제점들을 알아보고, 이 문제를 해결하기 위하여 제안된 다양한 MAC 프로토콜을 살펴본다. 그리고 현재 초기 단계에 있는 무선랜 시스템에서의 full-duplex 통신과 관련된 MAC 계층의 향후 연구 과제를 논의한다.

Full-duplex communications have emerged as a key technology for next-generation wireless local area networks (WLANs). Although the key enabling technology for full-duplex communications is the self-interference cancellation (SIC) technique in the physical layer, the employment of full-duplex communications has huge potentials to substantially increase the throughput at the medium access control (MAC) layer. At the same time, full-duplex communications pose non-trivial challenges to the MAC protocol design. In this article, we first identify salient problems in supporting full-duplex communications in WLAN MAC protocols. After that, we survey the state-of-the art to address those problems and analyze their pros and cons. Finally, we present open research challenges to improve the effectiveness of full-duplex communications in WLANs.

키워드

참고문헌

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피인용 문헌

  1. 전이중 통신 방식을 사용하는 무선랜을 위한 간섭 제거 기법 vol.40, pp.12, 2015, https://doi.org/10.7840/kics.2015.40.12.2353
  2. 동일대역 전이중 방식 통신 시스템에서 자기간섭 제거에 따른 성능 분석 vol.41, pp.3, 2016, https://doi.org/10.7840/kics.2016.41.3.331