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An Energy-Efficient Dynamic Area Compression Scheme in Wireless Multimedia Sensor Networks

무선 멀티미디어 센서 네트워크에서 에너지 효율적인 동적 영역 압축 기법

  • 박준호 (충북대학교 전기.전자.정보.컴퓨터학부 정보통신공학전공) ;
  • 류은경 (충북대학교 전기.전자.정보.컴퓨터학부 정보통신공학전공) ;
  • 손인국 (충북대학교 전기.전자.정보.컴퓨터학부 정보통신공학전공) ;
  • 유재수 (충북대학교 전기.전자.정보.컴퓨터학부 정보통신공학전공)
  • Received : 2013.08.26
  • Accepted : 2013.12.02
  • Published : 2013.12.28

Abstract

In recent years, the demands of multimedia data in wireless sensor networks have been significantly increased for the high-quality environment monitoring applications that utilize sensor nodes to collect multimedia data. However, since the amount of multimedia data is very large, the network lifetime and network performance are significantly reduced due to excessive energy consumption on particular nodes. In this paper, we propose an energy-efficient dynamic area compression scheme in wireless multimedia sensor networks. The proposed scheme minimizes the energy consumption in the huge multimedia data transmission process by compression using the Chinese Remainder Theorem(CRT) and dynamic area detection and division algorithm. Our experimental results show that our proposed scheme improves the data compression ratio by about 37% and reduces the amount of transmitted data by about 56% over the existing scheme on average. In addition, the proposed scheme increases network lifetime by about 14% over the existing scheme on average.

Keywords

Wireless Multimedia Sensor Networks;Multimedia Data;Chinese Remainder Theorem;Dynamic Area;Compression

Acknowledgement

Supported by : 충북대학교

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