Journal of the Korea Society of Computer and Information (한국컴퓨터정보학회논문지)

Korean Society of Computer Information (한국컴퓨터정보학회)
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An Transmission Time Allocation Scheme in ZigBee Network

지그비 네트워크에서의 전송 시간 할당 방법

  • 최효현 (인하공업전문대학 컴퓨터정보과)
  • Received : 2011.01.05
  • Accepted : 2011.01.23
  • Published : 2011.04.30
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Abstract

When ZigBee network supports beacon transmission mechanism, ZigBee devices have the restriction of the transmission range from the coordinator. On the contrary, when it does not support beacon transmission, it is not easy to save the energy through turning into sleep mode. This paper proposes active slot allocation method that allocates a transmission time and does not use the beacon transmission mechanism. It is based on the ZigBee's distributed address assignment mechanism and supports the scalability. This paper explains the active slot structure and the allocation order and describes the operation of ZigBee devices. We verify the proposed mechanism through the simulation and show the performance evaluation. It can be useful on the industrial automation and the environmental surveillance.

지그비 네트워크는 비콘 전송 방식을 사용하는 경우 지그비 기기들은 코디네이터의 전송 범위 제약을 받고, 비콘 전송 방식을 사용하지 않는 경우는 지그비 기기들이 특정 시간에만 동작하고 나머지는 sleep 모드로 전환하는 에너지 절약 방법을 적용하기 쉽지 않다. 본 논문에서는 비콘 전송 방식을 사용하지 않고 특정 전송 시간을 지정해 주는 활성화 슬롯할당 방법을 제안한다. 지그비의 분산 주소 할당 기법을 기반으로 하며 코디네이터의 전송범위 제약을 받지 않아 확장성을 지원해준다. 본 논문에서는 활성화 슬롯의 구조와 활성화 슬롯을 할당해주는 순서에 대해 설명하고 이를 지그비 기기들의 동작 방식에 대해 기술한다. 모의실험을 통하여 제안한 방식을 검증하고 성능 평가를 보인다. 제안 방안은 산업 자동화와 환경 감시 등의 큰 규모의 네트워크에 유용하게 활용될 수 있다.

Keywords

References

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