희소 모바일 애드 혹 네트워크 환경에서 빅데이터 센싱을 위한 에너지 효율적인 센서 커버리지 알고리즘
An Energy-Efficient Algorithm for Solving Coverage Problem and Sensing Big Data in Sparse MANET Environments
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초록
모바일 노드를 이용하여 넓은 범위를 센싱하기 위해서는 노드 배치의 균일성이 매우 중요한 이슈 중 하나이다. 본 논문에서는 희소 모바일 애드 혹 네트워크 환경에서 빅 데이터 센싱을 위한 커버리지 문제에 대한 주제를 다룬다. 커버리지 문제에 관한 기존 연구에서는 넓은 범위를 센싱하기 위해 노드의 수가 충분히 많은 환경을 가정하였다. 하지만 희소 모바일 애드 혹 네트워크 환경에서 센서 커버리지 문제는 노드들 간의 센싱 범위가 겹치는 범위를 최소화하기 위해 노드들 간의 거리가 충분히 멀어야 한다. 따라서 본 논문에서는 희소 모바일 애드 혹 네트워크 환경에서 센서 커버리지 문제를 정의하고 중앙 중재자 없이 자가 조직의 방식에 의한 해결 방안을 제시한다. 실험 결과를 통해 제안하는 방식은 커버리지 영역과 에너지 소비 관점에서 효율적임을 보인다.
Abstract
To sense a wide area with mobile nodes, the uniformity of node deployment is a very important issue. In this paper, we consider the coverage problem to sense big data in sparse mobile ad hoc networks. In most existing works on the coverage problem, it has been assumed that the number of nodes is large enough to cover the area in the network. However, the coverage problem in sparse mobile ad hoc networks differs in the sense that a long-distance between nodes should be formed to avoid the overlapping coverage areas. We formulate the sensor coverage problem in sparse mobile ad hoc networks and provide the solution to the problem by a self-organized approach without a central authority. The experimental results show that our approach is more efficient than the existing ones, subject to both of coverage areas and energy consumption.
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