전자공학회논문지 (Journal of the Institute of Electronics and Information Engineers)

대한전자공학회 (The Institute of Electronics and Information Engineers)
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Wi-Fi 네트워크간의 신호간섭 및 데이터 전송률 영향 분석

Signal Interference of Neighboring Wi-Fi Networks on Data Throughput

  • 장걸 (강원대학교 컴퓨터학부) ;
  • 이구연 (강원대학교 컴퓨터학부) ;
  • 김화종 (강원대학교 컴퓨터학부)
  • Zhang, Jie (Dept. of Computer Eng. Kangwon National University) ;
  • Lee, Goo Yeon (Dept. of Computer Eng. Kangwon National University) ;
  • Kim, Hwa Jong (Dept. of Computer Eng. Kangwon National University)
  • 투고 : 2012.05.27
  • 발행 : 2012.11.25
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초록

최근 스마트폰과 같은 무선통신기기의 급증으로 인하여 IEEE 802.11 Wi-Fi 네트워크에서 인접 네트워크간의 신호간섭현상이 많이 발생하며, 이와 같은 신호간섭현상은 데이터 전송 품질에도 영향을 미친다. 현재 출시되고 있는 다수의 Wi-Fi 관련 제품들은 높은 데이터 전송률 및 넓은 전송범위를 보여주고 있지만, 반면 이 같은 특성은 인접한 무선기기와의 무선신호간섭확률도 높게 한다. 무선신호간섭은 무선통신 특성상 피하기 어려운 현상이지만 통신기기의 신호전송범위를 작게 함으로서 최소화할 수 있다. 그러나 작은 신호전송범위는 낮은 송신강도를 의미하므로, 이는 낮은 데이터 전송률로 나타나게 된다. 이에 본 논문에서는 신호강도, 전송률, 신호간섭간의 상호 관계를 분석하고, 이러한 관계로부터 데이터 전송률에 미치는 영향을 실험과 시뮬레이션을 통하여 구한다.

Products of Wi-Fi devices in recent years offer higher throughput and have longer signal coverage which also bring unnecessary signal interference to neighboring wireless networks, and result in decrease of network throughput. Signal interference is an inevitable problem because of the broadcast nature of wireless transmissions. However it could be optimized by reducing signal coverage of wireless devices. On the other hand, smaller signal coverage also means lower transmission power and lower data throughput. Therefore, in this paper, we analyze the relationship among signal strength, coverage, interference and network throughput by simulation on various network topology.

키워드

참고문헌

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피인용 문헌

  1. Throughput of Wi-Fi network based on Range-aware Transmission Coverage vol.14, pp.3, 2013, https://doi.org/10.9728/dcs.2013.14.3.349
  2. A Jitter Variation according to Loop Filters in DLL vol.50, pp.12, 2013, https://doi.org/10.5573/ieek.2013.50.12.033