Towards Robust Data Storage in Wireless Sensor Networks
Norbert Siegmund, Marko Rosenmüller, Guido Moritz, Gunter Saake, Dirk Timmermann · IETE Technical Review · 2009
Abstract. Wireless sensor networks are used for sensing data if wired communication is not suitable. Connection losses and depletion of nodes, however, result in reduced data availability of such networks. This is problematic in upcoming scenarios like health-care or home automation where data availability is highly important. In this paper, we present an approach to provide robust data storage for wireless sensor networks. We achieve this goal by providing FAME-DBMS, a customizable database management system which can be tailored according to the varying requirements of a sensor network. FAME-DBMS provides reliable data storage using security and integrity features, transaction management and recovery, and a customizable query engine. Since data reliability in wireless sensor networks also suffers from node failures, we propose a new S-RAID storage layer inspired from the RAID approach of server systems. This S-RAID is integrated in FAME-DBMS to store data redundantly and distributed in a wireless sensor network and thus provides access to data even when nodes fail. 1