Enabling context awareness through distributed query processing in wireless sensor networks

Wireless Sensor Networks (WSN) are an im- portant technological support for smart environments and ambient assisted applications. Up to now most ap- plications are based on ad hoc solutions for WSN, and attempts to provide uniform and reusable application are still in their youth. Among these attempts, those integrating database technologies and WSN appear the most promising. Under this trend of research we propose a general framework to be used in context aware archi- tectures aimed at integrating wireless sensor networks by exploiting a distributed query processor approach. In the proposed approach the WSN can be programmed us- ing a query language (MW-SQL) which offers constructs specialized for sensor networks. The query language is offered by a JDBC driver which is encapsulated within the OSGi framework.