A survey on adaptable middleware for wireless sensor networks

The use of sensor networks in different kinds of sophisticated applications is emerging due to several advances in sensor technologies and embedded systems and the increased demand from users. These systems run in highly dynamic and heterogeneous environments, in which changes occur very frequently, creating the need for adaptation support to environment changes and changes imposed by the users. An approach to allow the use of sensor networks in such complex and sophisticated applications is the use of middleware, especially adaptable middleware, which provides efficient response to the environment changes, adapting the middleware behaviour according to new requirements. In this survey we present a study of the state of the art in adaptable middleware for sensor networks, in which we analyse the main trends represented by important projects in the area, analysing their main features and providing a comparison among them