An Optimal Energy Efficient Data Storage Scheme in Wireless Sensor Networks
Date Issued
2006
Date
2006
Author(s)
Lin, Shih-Han
DOI
en-US
Abstract
A wireless sensor network can monitor a physical environment, collect raw data form the environment and store them. However, a wireless sensor network has a major resource constraint on limited power. Therefore, it is an important issue that how to save energy. To economize energy, it is necessary to employe a more energy e cient data storage scheme in wireless network. In the former research, Tug-of-war, energy conservation is achieved through deploying a appropriate number of nodes in charge of storage according to event and query occurrence requencies. The number is an exponential number with base 4. Nevertheless, we think the selecting scheme of Tug-of-War is not accurate so that the most approprate number may not be selected. We want to study relationship between the energy e ciency and storage nodes to optimize the performance.
We proposes two data storage system, "Geometric System" and "Linear System". We apply the 2^r and 2I replication schemes into Geometric System and Linear System respectively. The image number of Geometric System increases exponentially with base 2. The image number of Linear System increases linearly. Geometric System and Linear System should deploy images with more appropriate number than ToW to save energy. Through simulation experiments, Geometric System and Linear System indeed demonstrate better performance.
Subjects
感測器網路
能源效率
Sensor Networks
Energy Efficient
Type
other
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