CENS Technical Seminar Series

Robust and Extremely Energy Efficient Sensor Networks: A Cross-Layered Adaptation Approach

Invited Speaker: Bo Ryu
Date: June 6, 2008
Time: 12:00 PM - 1:00 PM
Venue: Boetler Hall 4760

Abstract

Despite much research on sensor networks in general and on event-response applications in particular, simultaneously achieving the desired timeliness of response and end-to-end performance and longevity remains a significant challenge. In this talk, we present our recent research on developing robust, flexible, and extremely energy efficient sensor networking systems for both unattended ground sensors and floating/bottomed surveillance sensors. The goal of the research is to enable order(s) of magnitude improvements in sensor network lifetime for event-response applications by developing innovative protocols optimized for ultra-low duty cycling while simultaneously achieving long lifetime, low latency, and good modalities for performance, energy, and system complexity tradeoff features. The most unique innovation lies in the "cross-layered energy adaptation" as opposed to traditional approach of single-component adaptation/conservation paradigm.

In this talk, we first present a cross-layer hierarchical energy adaption framework, which consists of the following three components: Distributed Adaptive Time Synchronization (DATS), Low Power Multi-Modal MAC (LPM-MAC), and Cross-layer Adaptive Reconfiguration (CARE). Then, we will discuss each component in details. Preliminary performance of our proposed solution has been evaluated in QualNet. We will present some of the simulation results, indicating broad energy saving features while still maintaining low latency in response.