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A High Performance Transmission Method for Massively Delivering Multimedia Data in WMSN

무선 멀티미디어 센서 네트워크(WMSN) 환경에서 멀티미디어 데이터 전송을 위한 대용량 전송 기법에 대한 연구

  • 이재호 (고려대학교 전기전자전파공학과 미래정보망 연구실) ;
  • 엄두섭 (고려대학교 전기전자전파공학과)
  • Received : 2012.05.14
  • Accepted : 2012.10.31
  • Published : 2012.11.30

Abstract

For transmitting sensed data, wireless sensor networks have been developed and researched for the improvement of energy efficiency, hence, many MAC protocols in WSN employ the duty cycle mechanism. Since the progressed development of the low power transceiver and processor let the high energy efficiency come true, the delivery of the multimedia data which occurs in area of sensor work should be needed to provide supplemental information. In this paper, we design a new scheme for massive transmission of large multimedia data where the duty cycle is used in contention based MAC protocol, for WMSN. The proposed scheme can be applied into the previous duty cycle mechanism because it provides two operation between normal operation and massive transmission operation. Measuring the buffer status of sender and the condition of current radio channel can be criteria for the decision of the above two operations. This paper shows the results of the experiment by performing the simulation. The target protocol of the experiment is X-MAC which is contention based MAC protocol for WSN. And two approaches, both X-MAC which operates only duty cycle and X-MAC which operates combined massive transmission scheme, are used for the comparative experiment.

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