SPASS: Scalable and Energy-efficient Data Acquisition in Sensor Databases
Author
M. H. Ali, Walid G. Aref, and Cristina Nita-Rotaru
Tech report number
CERIAS TR 2005-122
Abstract
Scalability and energy management issues are crucial for
sensor network databases. In this paper, we introduce the
Sharing and PArtitioning of Stream Spectrum (SPASS) pro-
tocol as a new approach to provide scalability with re-
spect to the number of sensors and to manage the power
consumption efficiently. The spectrum of a sensor is the
range/distribution of values read by that sensor. Close-by
sensors tend to give similar readings and, consequently, ex-
hibit similar spectra. We propose to combine similar spectra
into one global spectrum that is shared by all contributing
sensors. Then, the global spectrum is partitioned among the
sensors such that each sensor carries out the responsibility
of managing a partition of the spectrum. Spectrum sharing
and partitioning require continuous coordination to balance
the load over the sensors. Experimental results show that
the SPASS protocol relieves a sensor database system from
the burden of data acquisition in large-scale sensor networks
and reduces the per-sensor power consumption.
Key alpha
SPASS: Scalable and Energy-efficient Data Acquisition in Sensor Databases
Affiliation
Department of Computer Science
Publication Date
2005-01-01