Technical Reports (CIS)

Document Type

Technical Report

Date of this Version

October 2008


University of Pennsylvania Department of Computer and Information Science Technical Report No. MS-CIS-08-26


With the ultimate goal of extending the data integration paradigm and query processing capabilities to ad hoc wireless networks, sensors, and stream systems, we consider how to support communication between sets of nodes performing distributed joins in sensor networks. We develop a communication model that enables in-network join at a variety of locations, and which facilitates coordination among nodes in order to make optimization decisions. While we defer a discussion of the optimizer to future work, we experimentally compare a variety of strategies, including at-base and in-network joins. Results show significant performance gains versus prior work, as well as opportunities for optimization.



Date Posted: 14 November 2008