Data Allocation Techniques for Mobile Sensor Networks

In mobile sensor networks (MSNs), since sensor nodes and wireless networks are highly resource constrained, it is required to manage sensor data in flexible and efficient manners. Under the MEXT research project entitled "Studies on Efficient Data Processing Techniques for Mobile Sensor Networks," we have conducted researches on data management issues in MSNs. In this paper, we report some of our achievements in a sub-area of this project, which addresses data allocation for efficient query processing in MSNs. In particular, we first show our achievements on how to effectively allocate sensor data on mobile nodes and how to efficiently process top-k and k-nearest neighbor queries on the allocated data. Then, we also show our achievements on how to quantify the impacts of mobility on data availability and data dissemination in MSNs.