Energy Hole Healing Protocol for Wireless Sensor Networks
碩士 === 國立中央大學 === 資訊工程研究所 === 93 === Many applications in wireless sensor networks require maintaining full sensing coverage in target area with time went by. Coverage hole may cause injuries to surveillance applications. Because of the energy consumption spatial locality, neighboring sensor nodes d...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2005
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| Online Access: | http://ndltd.ncl.edu.tw/handle/84550053387342255775 |
| Summary: | 碩士 === 國立中央大學 === 資訊工程研究所 === 93 === Many applications in wireless sensor networks require maintaining full sensing coverage in target area with time went by. Coverage hole may cause injuries to surveillance applications. Because of the energy consumption spatial locality, neighboring sensor nodes deplete their energy off almost simultaneously. These neighboring sensor nodes are called energy hole. Energy holes may cause large coverage hole, and any events occurred within coverage hole will not be detected by sensor networks. In this circumstance, the requirements of surveillance applications can not be satisfied. In this paper, an algorithm is proposed to resolve the energy hole problem. The distribute algorithm can cover energy holes by using mobile sensors. Mobile sensors heal energy hole in parallel way to avoid the large cost of manual sensor deployment. The energy hole expansion problem is overcome by hexagon mechanism. We evaluate the performance of the proposed scheme through simulations. The simulation results show that our proposed protocol has low control message overhead on energy hole information collection and high utilization of mobile sensors about healing energy hole.
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