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Energy efficiency improvement based on optimal buffer thresholds model for wireless sensor devices
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DOI：10.1109/icufn.2019.8805920.png)
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Abstract
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In Wireless Sensor Networks(WSNs), energy efficiency is important because it is difficult to replace battery of sensor nodes frequently. To apply suitable MAC protocol to WSNs, it is essential to maximize the battery power of sensor devices. Group Management MAC(GM-MAC) is one of the MAC protocols that can greatly save sensors' battery power. However, there may be data loss and bottleneck phenomenon with original buffer threshold scheme of GM-MAC. In this paper, we have proposed a new buffer thresholds model. In order to verify performance improvement of the proposed scheme, it has been simulated and compared with original buffer threshold method. In addition, it is compared with mathematical theory. A new buffer thresholds model has been verified to improve energy efficiency and have no data loss at all. It can be used in wide range of WSNs topologies with mobile sensor nodes.
Keywords:
Wireless Sensor Networks(WSNs)
MAC protocol
stability
buffer threshold
sensor node
sink
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