MobiQuery: A Spatiotemporal Query Service for Mobile Users in Sensor Networks

Authors

Guoliang Xing, Washington University in St. Louis
Sangeeta Bhattacharya, Washington University in St. Louis
Chenyang Lu, Washington University in St. LouisFollow
Octav Chipara, Washington University in St. Louis
Chien-Liang Fok, Washington University in St. Louis
Gruia-Catalin Roman, Washington University in St. Louis

Document Type

Technical Report

Publication Date

2005-10-31

Filename

WUCSE-2005-49.pdf

Technical Report Number

WUCSE-2005-49

Abstract

This paper presents MobiQuery, a spatiotemporal query service that allows mobile users to periodically collect sensor data from the physical environment through wireless sensor networks. A salient feature of \MQ is that it can meet stringent spatiotemporal performance constraints, including query latency, data freshness, and changing areas of interest due to user mobility. We present three just-in-time prefetching protocols that enable MobiQuery to achieve desired spatiotemporal performance despite low node duty cycles, while significantly reducing communication overhead. We validate our approach through both theoretical analysis and extensive simulations under realistic settings including varying user movement patterns and location errors.

Comments

Permanent URL: http://dx.doi.org/10.7936/K7SX6BJ8

Recommended Citation

Xing, Guoliang; Bhattacharya, Sangeeta; Lu, Chenyang; Chipara, Octav; Fok, Chien-Liang; and Roman, Gruia-Catalin, "MobiQuery: A Spatiotemporal Query Service for Mobile Users in Sensor Networks" Report Number: WUCSE-2005-49 (2005). All Computer Science and Engineering Research.
https://openscholarship.wustl.edu/cse_research/966