Environment-adaptive routing protocols for underwater acoustic sensor networks in the deep ocean = 깊은 바다의 3차원 환경 특성을 이용한 수중 센서 네트워크 라우팅 기법 연구

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Underwater Acoustic Sensor Networks (UWSNs) face challenges in communication such as limited bandwidth, high latency, high bit error probability, mobility, and energy draining due to underwater characteristics different from those of terrestrial environments. Also requirements of sensor networks can be various depending on kinds of applications in oceanographic data collection, pollution monitoring, tactical surveillance, disaster monitoring, assisted navigation and so forth. These applications can be classified into two groups: delay-sensitive applications and delay-insensitive applications. Each application group has different characteristics and requirements, so in this paper, we try to satisfy each requirement from the network layer point of view. Also, our proposed routing protocols for each application aim for 3-dimensional and deep-ocean environments. The main characteristic of our proposed routing protocols is the reflection of the property of environmental variables sensed by sensors on the routing protocols. In the deep ocean, several oceanic variables have different values depending on area. This fact can affect the behavior of acoustic communication, so we exploit this property to find routing paths. Moreover, our proposed protocols are based on the geographical routing algorithm. Since large-scale UWSNs are hard to know the whole network information, the geographical routing algorithm, which uses only position information of local area, should be used. The proposed routing protocols are introduced as follows. Firstly, we propose a routing protocol to find a low-latency path under 3-dimensional deep-ocean sensor networks. In deep-ocean conditions, underwater sound speed, which is determined by oceanic variables such as temperature, salinity, and pressure, has considerably different values depending on the location of measurement, so underwater sound speed affects the behavior of the acoustic communication under the sea. For this reason, we obtai...
Advisors
Kim, Dae-Youngresearcher김대영researcher
Description
한국정보통신대학교 : 공학부,
Publisher
한국정보통신대학교
Issue Date
2008
Identifier
392899/225023 / 020064545
Language
eng
Description

학위논문(석사) - 한국정보통신대학교 : 공학부, 2008.2, [ viii, 62 p. ]

Keywords

Low latency; Energy efficiency; Three-dimensional routing protocol; Wireless Underwater Sensor Network; Deep ocean; 깊은 바다; 지연시간 단축; 에너지 효율; 3차원 라우팅 프로토콜; 수중 무선 센서 네트워크

URI
http://hdl.handle.net/10203/54909
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=392899&flag=dissertation
Appears in Collection
School of Engineering-Theses_Master(공학부 석사논문)
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