Distributed In-Network Actuation of Wireless Sensor Networks Using a Declarative Query Interface

Abstract

Declarative SQL queries are a way of abstracting out the underlying com- plexity in Wireless sensor-actuator networks (WSAN). Current SQL syntax to perform actuation tasks misleads the user because of their artificial way of expressing the actuation tasks thus violating the purpose of the declarative nature. Particularly with respect to distributed in-network actuation tasks where multiple sensor nodes and actuator nodes involve, the user may be re- quired to write multiple queries based on the current actuation query syntax causing a negative impact on the performance. We address these issues in existing declarative layer with modifications to the virtual data table of the abstraction and thus a new syntax is suggested and implemented. We also introduce a new in-network execution strategy for suggested query syntax to address performance issues of distributed in-network actuation scenarios. Using prototype implementations, we provide evidence to prove that our solution addresses the identified issues of existing works.