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

  • 제32권2A호
  • /
  • Pages.143-151
  • /
  • 2007
  • /
  • 1226-4717(pISSN)
  • /
  • 2287-3880(eISSN)
한국통신학회 (The Korean Institute of Commucations and Information Sciences)
권호 표지

무선 센서 네트워크 환경에서 에너지 소비 및 QoS를 고려한 예약기반 Multichannel CSMA 프로토콜

Reservation based Multichannel CSMA Protocol for Improvement of Energy Consumption and QoS in Wireless Sensor Networks

  • 한정안 (숭실대학교 컴퓨터학과 컴퓨터구조연구실) ;
  • 김윤형 (숭실대학교 컴퓨터학과 컴퓨터구조연구실) ;
  • 이문호 (청운대학교 멀티미디어학과) ;
  • 김병기 (숭실대학교 컴퓨터학부)
  • 발행 : 2007.02.28
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⟨ 이전 논문 다음 논문 ⟩

초록

무선 센서 네트워크 환경에서 각 계층 프로토콜을 설계할 때 에너지 소비를 최대한 줄임으로 노드의 생존 시간을 최대화하기 위한 노력이 필요하다. 본 논문에서는 MAC 계층에서 채널 접근 과정에서 충돌로 인한 에너지의 소비를 최소화하기 위한 예약기반 다중 채널 CSMA MAC 프로토콜을 제안한다. 네트워크를 구성하는 각 노드는 제어채널과 데이터 채널을 독립적으로 운용하며 제어 채널을 이용하여 데이터 전송을 위한 채널을 예약하고 예약된 노드들에게 수신 노드가 채널 이용을 허가함으로 임의의 시간에 재전송하는 절차를 생략할 수 있도록 하였다. 또한, 송신 노드에서 가용 채널 중 임의의 채널을 선택하여 수신 노드에게 전달하면 수신 노드에서 채널의 가용 여부를 판단하여 그 결과를 통해 최종적으로 전송 채널을 선택하도록 하였다. 성능의 평가는 시뮬레이션을 통하여 기존의 방식과의 차이를 비교하였다.

One of the consideration things to design protocol in wireless sensor networks is to maximize lifetime of sensor node as reducing energy consumption. In this paper propose reserve based multichannel CSMA mac protocol for minimizing energy consumption which arise from collision and waiting retransmission at channel access process in mac layer Each sensor node which constitute sensor networks has data channel and control channel. And as sensor node reserve channel for data transmission by using control channel and receipt node allow reservation node to use data channel, sending node can abbreviate try of retransmission after random interval time. Also, When sending node delivers selects option channel in available channels to receipt node, the receipt node decide whether the channel is available to oneself and through the result select transmission channel ultimately. Performance evaluation compare with previous simple multichannel CSMA.

키워드

참고문헌

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