An adaptive-reliability cyber-physical transport protocol for spatio-temporal data

Hossein Ahmadi, Tarek Abdelzaher

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


In this paper, we propose a new transport protocol for data collection in sensor networks that monitor physical phenomena. In a network with variable channel condition, this protocol adapts transmission reliability based on the importance of transmitted spatio-temporal data to the reconstruction of the phenomenon. Data whose omission generates a higher estimation error are transmitted more reliably. The protocol aggregates data from nodes to the base station and provides a constant expected estimation error while significantly reducing the energy consumption and bandwidth usage compared with other approaches to reliable communication. Moreover, our protocol is easy to implement on current motes. To the best of our knowledge, this is the first transport layer protocol, that incorporates predictive models, to be implemented on motes. We perform extensive experiments on MicaZ motes using LiteOS to compare the performance of our protocol against previous transport protocols and data suppression schemes. Our experimental results show that our protocol introduces a very small estimation error while saving orders of magnitude in consumed energy compared to reliable transport. In other cases, estimation error and energy consumption are simultaneously reduced by 50-85%.

Original languageEnglish (US)
Title of host publicationProceedings - Real-Time Systems Symposium, RTSS 2009
Number of pages10
StatePublished - 2009
EventReal-Time Systems Symposium, RTSS 2009 - Washington, D.C., United States
Duration: Dec 1 2009Dec 4 2009

Publication series

NameProceedings - Real-Time Systems Symposium
ISSN (Print)1052-8725


OtherReal-Time Systems Symposium, RTSS 2009
Country/TerritoryUnited States
CityWashington, D.C.

ASJC Scopus subject areas

  • Software
  • Hardware and Architecture
  • Computer Networks and Communications


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