The Journal of Korea Institute of Information, Electronics, and Communication Technology (한국정보전자통신기술학회논문지)

Korea Information Electronic Communication Technology (한국정보전자통신기술학회)
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A Reliable Protocol for Real-time Monitoring in Industrial Wireless Sensor Networks

산업 무선 센서 네트워크에서 실시간 모니터링을 위한 신뢰성 향상 기법

  • Received : 2017.10.10
  • Accepted : 2017.10.20
  • Published : 2017.10.30
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Abstract

In industrial wireless sensor networks, many applications require integrated QoS supporting. This paper proposes a reliable protocol for real-time monitoring in industrial wireless sensor networks. Retransmission is well-known to recover the transmission failure, however, this might cause the time delay to violate the real-time requirement. The proposed protocol exploits broadcasting feature of wireless networks and the temporal opportunity concept. The opportunities to relay the data packets are shared by the broadcasting feature and the temporal opportunity concept maximize the number of candidates in communication. Simulation results show that the proposed protocol is superior to the existing real-time protocols in term of real-time service and reliability.

산업 무선 센서 네트워크에서는 많은 응용들이 복합적인 서비스 품질 지원을 요구한다. 본 논문에서는 산업 무선 센서 네트워크에서 실시간 서비스의 신뢰성을 향상시키기 위하여 기회적 실시간 모니터링 데이터 전달 프로토콜을 제안한다. 전송 실패를 복구하기 위해 가장 많이 알려진 재전송 기법들은 실시간 요구사항에 위배되는 추가적 딜레이를 발생시키기 때문에 실시간 데이터 전달에 적절치 않다. 제안 프로토콜은 무선 네트워크의 브로드캐스팅 특성과 시간적 기회 제공 방법을 사용한다. 브로드캐스팅 특성을 통해서 라디오 반경 내 모든 이웃에게 전달하고, 시간적 기회 제공 방법으로 중계 우선순위를 정하여 모든 노드들이 중계 기회를 얻을 수 있게 한다. 제안 방안은 최대한 많은 노드가 라우팅에 참여하여 실시간 데이터 전송 확률을 높인다. 시뮬레이션을 통하여 제안 방안이 실시간 데이터 전송과 신뢰성 측면에서 우월함을 보인다.

Keywords

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