| Summary: | 碩士 === 大同大學 === 資訊經營學系(所) === 97 === Wireless sensor network stores data to narrate the phenomenon. The most important issue is to prolong the network life time and retrieve data correctly. The data storage scheme plays a very important role in the control of energy consumption and maintains the data reliability. Sensor nodes turn into sleep mode is the most common power saving mechanism, but the data retrieval will have some problems while sensor node is sleeping. Take GHT as an example, it changes face to deal with sensor node failure or sleeping problem. The replicas in the face are hard to control and retrieve. We have proposed the data storage scheme that emerges the sleep mode and effective storage mechanism. In addition, our proposed scheme support multi-resolution query. It satisfies different queries’ demand. When the query needs higher resolution, it takes more cost to reach the precision. In other hand, the query can be replied quickly. Our proposed scheme is simple and achieves power saving and multi-resolution object. But also resolves the data reliability problem when the storage scheme operates in a sensor network that applies sleep mode mechanism.
|
|---|
