Efficient Sharing of Sensor Networks

In this paper we tackle the problem of allowing applications to request different data at different rates from different sensors of the same sensor network while still being able to run the sensor network in an efficient manner. Our approach is to merge an arbitrary number of user queries into a network query. By doing this, traffic is minimised and the sensors have better energy consumption behavior than if all user queries would have been directly sent to the network. In the paper we describe the algorithms for the transformation of queries and the resulting data streams. We also provide an extensive performance evaluation of the algorithms using sets of over hundred overlapping user queries executing on the same sensor network