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

  • 제32권8B호
  • /
  • Pages.482-491
  • /
  • 2007
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  • 1226-4717(pISSN)
  • /
  • 2287-3880(eISSN)
한국통신학회 (The Korean Institute of Commucations and Information Sciences)
권호 표지

무선 센서 네트워크를 위한 에너지 효율적인 메시지 전송 신뢰도 보장 라우팅 알고리즘

Energy-Efficient Routing Algorithm with Guaranteed Message Transmission Reliability for Wireless Sensor Networks

  • 백장운 (경북대학교 전자전기컴퓨터학부 모바일컴퓨팅 & 임베디드시스템 연구실) ;
  • 서대화 (경북대학교 전자전기컴퓨터학부 모바일컴퓨팅 & 임베디드시스템 연구실) ;
  • 남영진 (대구대학교 컴퓨터.IT공학부)
  • 발행 : 2007.08.31
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초록

본 논문에서는 무선 센서 네트워크에서 에너지 효율적이고 신뢰성 있는 메시지 전송을 제공하는 k-독립경로 라우팅 알고리즘을 제안한다. 제안하는 알고리즘은 중요한 이벤트가 발생하지 않는 경우에는 단일 경로를 통해서 메시지를 전송하여 에너지 효율을 높인다. 하지만, 중요한 이벤트가 발생한 경우에는 k개의 독립경로를 통해서 메시지를 전송함으로써 요구되는 메시지 전송 신뢰도를 보장한다. 수집되는 데이터의 패턴을 관찰함으로써 중요한 이벤트의 발생 유무를 감지하고, 타깃 전송률과 검증된 고장 모델을 통하여 독립경로의 수(k)를 산출한다. 시뮬레이션 결과에서 제안하는 알고리즘은 기존 라우팅 알고리즘에 비해 노드 고장에 견고하였고 다중 경로 및 경로 복구 알고리즘보다 에너지 소모를 줄이고 평균 지연을 감소시켰음을 보여주었다.

This paper proposes a k-disjoint-path routing algorithm that provides energy efficient and reliable message transmission in wireless sensor networks. The proposed algorithm sends messages through a single path without the occurrence of critical events. However, it sends through k disjoint paths(k>1) under the occurrence of critical events. The proposed algorithm detects the occurrence of critical events by monitoring changing data patterns, and calculates k from a well-defined fault model and the target-delivery ratio. Our simulations reveal that the proposed algorithm is more resilient to node failure than other routing algorithms, and it also decreases energy consumption and reduces the average delay much more than multi-path and path-repair algorithms.

키워드

참고문헌

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