RISS 검색 - 국내학술지논문 상세보기

부가정보

다국어 초록 (Multilingual Abstract)

The rapid deployment of millions of mobile sensors and smart devices has resulted in high demand for opportunistic
encounter-based networking. For the cooperative video surveillance of dashboard cameras in nearby vehicles, a fast
and energy-efficient asynchronous neighbor discovery protocol is indispensable because a dashboard camera is an
energy-hungry device after the vehicle s engine has turned off. In the existing asynchronous neighbor discovery
protocols, all nodes always try to discover all neighbors. However, a dashboard camera needs to discover nearby
dashboard cameras when an event is detected. In this paper, we propose a fast and energy-efficient asynchronous
neighbor discovery protocol, which enables nodes : 1) to have different roles in neighbor discovery, 2) to discover
neighbors within a search range, and 3) to report promptly the exact discovery result. The proposed protocol has
two modes: periodic wake-up mode and active discovery mode. A node begins with the periodic wake-up mode to
be discovered by other nodes, switches to the active discovery mode on receiving a neighbor discovery request, and
returns to the periodic wake-up mode when the active discovery mode finishes. In the periodic wake-up mode, a node wakes up at multiples of number α, where α is determined by the node’s remaining battery power. In the active
discovery mode, a node wakes up for consecutive γ slots. Then, the node operating in the active discovery mode can
discover all neighbors waking up at multiples of β for β ≤ γ within γ time slots. Since the proposed protocol assigns
one half of the duty cycle to each mode, it consumes equal to or less energy than the existing protocols. A performance comparison shows that the proposed protocol outperforms the existing protocols in terms of discovery latency and energy consumption, where the frequency of neighbor discovery requests by car accidents is not constantly high.

목차 (Table of Contents)

1. 서 론
2. 관련 연구
3. 제안하는 프로토콜
4. 성능 분석
5. 결 론

1. 서 론
2. 관련 연구
3. 제안하는 프로토콜
4. 성능 분석
5. 결 론
References

참고문헌 (Reference)

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2 김명환, "ZigBee의 RSSI 위치정보기반 보안 영상정보 검색 시스템 설계 및 구현" 한국IT서비스학회 10 (10): 243-258, 2011

3 Kandhalu, A, "U-Connect : A Low-Latency Energy-Ecient Asynchronous Neighbor Disvovery Protocol" 350-361, 2010

4 Bakht, M, "Searchlight : Won’t You Be My Neigh-bor?" ACM 185-196, 2012

5 Dutta, P, "Practical Asynchronous Neighbor Discovery and Rendezvous for Mobile Sensing Applications" 71-84, 2008

6 Zheng, R., "Optimal Block Design for Asynchronous Wake-Up Schedules and Its Applications in Multihop Wireless Networks" 5 (5): 1228-1241, 2006

7 김용희, "IoT 서비스의 성공적 수용에 관한 연구 : iBeacon과 Nearby를 중심으로" 한국IT서비스학회 14 (14): 217-236, 2015

8 Niven, I., "An Introduction to the Theory of Numbers" John Willey and Sons 1991

9 Ko, H, "Adaptive, Asynchronous Rendezvous Protocol for Opportunistic Networks" 48 (48): 462-464, 2012