DALi: A communication-centric data abstraction layer for energy-constrained devices in mobile sensor networks

Christopher M. Sadler, Margaret Rose Martonosi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Scopus citations

Abstract

Communications in mobile and frequently-disconnected sensor networks are characterized by low-bandwidth radios, unreliable links, and disproportionately high energy costs compared to other system operations. Therefore, we must use as efficiently as possible any periods of connectivity that we have. For this reason, nodes in these networks need mechanisms that organize data to streamline search operations, local computation, and communications. This work proposes a Data Abstraction Layer (DALi), which is inserted between the application layer and the file system. DALi organizes data with networking in mind to facilitate the development of services for Data Search, Naming, and Reduction that combine to make communications more efficient. From the resulting two-tiered data hierarchy, we develop a multi-layer drill-down search structure that can locate data multiple orders of magnitude faster (and with much lower energy) than simpler data storage structures. Additionally, DALi conserves energy and bandwidth through a mechanism that acknowledges and removes specific data segments from a mobile sensor network. Finally, it seamlessly integrates in a lossless compression algorithm specifically designed for sensor networks to save additional energy.

Original languageEnglish (US)
Title of host publicationMobiSys'07
Subtitle of host publicationProceedings of the 5th International Conference on Mobile Systems, Applications and Services
Pages99-112
Number of pages14
DOIs
StatePublished - Oct 29 2007
EventMobiSys'07: Proceedings of the 5th International Conference on Mobile Systems, Applications and Services - San Juan, Puerto Rico
Duration: Jun 11 2007Jun 14 2007

Publication series

NameMobiSys'07: Proceedings of the 5th International Conference on Mobile Systems, Applications and Services

Other

OtherMobiSys'07: Proceedings of the 5th International Conference on Mobile Systems, Applications and Services
CountryPuerto Rico
CitySan Juan
Period6/11/076/14/07

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Hardware and Architecture
  • Information Systems
  • Software

Fingerprint Dive into the research topics of 'DALi: A communication-centric data abstraction layer for energy-constrained devices in mobile sensor networks'. Together they form a unique fingerprint.

  • Cite this

    Sadler, C. M., & Martonosi, M. R. (2007). DALi: A communication-centric data abstraction layer for energy-constrained devices in mobile sensor networks. In MobiSys'07: Proceedings of the 5th International Conference on Mobile Systems, Applications and Services (pp. 99-112). (MobiSys'07: Proceedings of the 5th International Conference on Mobile Systems, Applications and Services). https://doi.org/10.1145/1247660.1247674