Product Line Approach to Role-Based Middleware Development for Ubiquitous Sensor Network

Currently sensor network middlewares are developed so that they include all functionalities for various nodes. Since sensor network nodes usually operate with limited resources, it is desirable for them to have middlewares that have only the functionalities necessary to perform their roles. This paper proposes a systematic method for developing sensor network middleware using the product line approach In this method, functionalities of the sensor network middleware common to all nodes and functionalities specific to the different roles of nodes are carefully separated and grouped so that nodes with different roles have different middlewares that are specialized to their roles but minimally consumes the resources.