Energy-Efficient Wireless Sensor Network: A Cross Layer Approach
Date Issued
2004
Date
2004
Author(s)
Chuang, Kuang-Ting
DOI
en-US
Abstract
We propose an Energy-Efficient and Collision-Free solution using a cross layer approach. Our approach reduces energy consumption by ensuring that transmissions incur no collisions, smart ACK return scheme, and by allowing nodes to assume a low-power sleep state whenever they are not transmitting or receiving. We combine Network layer and MAC layer solutions and assume that time is slotted to give a novel mapping from POWER&MAC scheduling problem to vertex coloring problem to make wireless sensor network more Energy-Efficient. We also improve our scheme by channel reuse according to traffic information. Using traffic information, we avoid assigning additional time slots to nodes with low traffic to send, and also allows nodes to determine when they can switch off to sleep mode and not listen to the channel. The performance of our approach is evaluated through extensive simulations using various traffic patterns. The results indicate that our approach outperforms 802.11 and S-MAC.
Subjects
感測器
網路
無線
省能源
Wireless Sensor Network
Energy-Efficient
Type
thesis
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