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A Study on Packet Transmissions using overhearing and Time-Interval in WMSNs

WMSN에서 엿듣기와 시간 지연을 이용한 패킷 전송에 관한 연구

  • 하일규 (영남대학교 컴퓨터공학과) ;
  • 변석진 (영남대학교 컴퓨터공학과) ;
  • 안병철 (영남대학교 컴퓨터공학과)
  • Received : 2012.08.27
  • Accepted : 2013.02.04
  • Published : 2013.04.30

Abstract

With the advance of wireless sensor networks, WMSN(Wireless Multimedia Sensor Networks) researches to transfers multimedia data have been studied actively. First of all, three basic protocols, End-to-end, Hop-by-hop, and Unreliable transmission method, are compared to transfer multimedia data using simulations. This paper presents an efficient protocol to transfer multimedia data by overhearing messages of nodes and by transmitting next packets during the unused time interval. The proposed method is verified its performance by simulations and experiments. The results shows that the transmission rate of the proposed method 22% higher than that of End-to-end protocol with half of transmission time. Also the performance of the proposed method is compared with that of PIGAB(Packet Interval Gap based on Adaptive Backoff).

무선 센서 네트워크 기술의 발전과 함께 멀티미디어 데이터를 전송하기 위한 WMSN(Wireless Multimedia Sensor Networks) 관련 연구가 활발히 진행되고 있다. 멀티미디어 데이터 전송을 위해 세 가지 패킷 전송기술, 즉, 종단간 전송 방식(End-to-End), 홉간 전송 방식(Hop-by-Hop), 비신뢰성 기반 전송 방식의 성능을 모의실험을 통해 비교한다. 이 논문에서는 노드의 메시지를 엿듣는 방법과 시간지연을 이용한 새로운 패킷 전송방법을 제안한다. 제안된 방법은 홉간 전송방식보다 전송시간은 반으로 줄고 전송률은 22% 향상되었다. 그리고 제안된 방법의 성능을 PIGAB(Packet Interval Gap based on Adaptive Backoff)과 비교한다.

Keywords

References

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