상세정보
학술지
Hybrid Spatial Query Processing between a Server and a Wireless Sensor Network
- 발행일
- 201008
- 출처
- IEICE Transactions on Information and Systems, v.E93.D no.8, pp.2306-2310
- ISSN
- 0916-8532
- 출판사
- 일본, 전자정보통신학회 (IEICE)
- 협약과제
- 10GC1200, u-GIS 핵심 융,복합 기술 개발, 김경옥
- 초록
- There has been much interest in a spatial query which acquires sensor readings from sensor nodes inside specified geographical area of interests. A centralized approach performs the spatial query at a server after acquiring all sensor readings. However, it incurs high wireless transmission cost in accessing all sensor nodes. Therefore, various in-network spatial search methods have been proposed, which focus on reducing the wireless transmission cost. However, the in-network methods sometimes incur unnecessary wireless transmissions because of dead space, which is spatially indexed but does not contain real data. In this paper, we propose a hybrid spatial query processing algorithm which removes the unnecessary wireless transmissions. The main idea of the hybrid algorithm is to find results of a spatial query at a server in advance and use the results in removing the unnecessary wireless transmissions at a sensor network. We compare the in-network method through several experiments and clarify our algorithm's remarkable features. Copyright © 2010 The Institute of Electronics, Information and Communication Engineers.
- KSP 제안 키워드
- Centralized approach, Dead space, Hybrid algorithm, In-network, Information and communication, Network method, Real data, Sensor node, Spatial query processing, Static wireless sensor networks(WSNs), Transmission Cost