John Heidemann

Diffusion Filters as a Flexible Architecture for Event Notification in Wireless Sensor Networks

TitleDiffusion Filters as a Flexible Architecture for Event Notification in Wireless Sensor Networks
Publication TypeTechnical Report
Year of Publication2002
AuthorsJ. Heidemann, F. Silva, Y. Yu, D. Estrin, and P. Haldar
Date Publishedapr
Institutionusc-isi
Abstract

Wireless sensor networks represent an increasingly important example of distributed event systems. Unlike Internet-based distributed event systems, sensor networks are very bandwidth constrained and use sensor nodes that are often dedicated to the network and controlled by a single organization. Bandwidth constraints require, and administrative homogeneity allows, sensor networks to employ in-network processing, where application-specific code is used in the network to optimize data movement. The contribution of this paper is to describe the \emphdiffusion filter architecture, a software structure for a distributed event system that allows user-supplied software to interact with event routing. Sensor network nodes will span a wide range of capabilities, from tiny single-address space embedded processors to to desktop-class 32-bit computers. A second contribution of our architecture that it scales from 16- to 32-bit computers with OS support for single or multiple address spaces. We describe what software approaches facilitate this flexibility and quantify the performance differences.

URLhttp://www.isi.edu/%7ejohnh/PAPERS/Heidemann02a.html
Groups: