Lifetime elongation of event-driven wireless video sensor networks = 사건 감지 시 동작하는 무선 비디오 센서 네트워크의 동작 시간 증대

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This paper tries to prolong the lifetime of wireless video sensor networks in which each sensor node operates in event-driven manner. The proposed method first selects the route to the sink node in lifetime-aware fashion. Then it finds the optimal encoding bit-rate that maximizes the lifetime function of the se-lected route by utilizing the event statistics, remaining battery energy of each node and the analytic power consumption model of video encoder, wireless transceiver and memory. Furthermore, the proposed method additionally controls encoding frame-rate of the capturing node to balance the lifetime of each node within the selected route when the event occurrence rate distribution over the network is significantly unbalanced. Experimental results show that the proposed method extends the lifetime of the target network by 183.53% on average compared with a conventional bit-rate allocation method.
Advisors
Kyung, Chong-Minresearcher경종민
Description
한국과학기술원 : 전기및전자공학과,
Publisher
한국과학기술원
Issue Date
2013
Identifier
513361/325007  / 020113537
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 전기및전자공학과, 2013.2, [ iv, 31 p. ]

Keywords

network lifetime maximization; power-rate-distortion optimization; 네트워크 동작시간 최대화; 전력-율-왜곡 최적화; 무선 비디오 센서 네트워크; wireless video sensor networks

URI
http://hdl.handle.net/10203/180987
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=513361&flag=dissertation
Appears in Collection
EE-Theses_Master(석사논문)
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