Time-Bounded and Space-Bounded Sensing in Wireless Sensor Networks

Most papers on sensing in wireless sensor networks use only very simple sensors, e.g. humidity or temperature, to illustrate their concepts. However, in a large number of scenarios including structural health monitoring, more complex sensors that usually employ medium to high frequency sampling and post-processing are required. Additionally, to capture an event completely several sensors of different types are needed which have to be in range of the event and used in a timely manner. We study the problem of time-bounded and space-bounded sensing where parallel use of different sensors on the same node is impossible and not all nodes possess all required sensors. We provide a model formalizing the requirements and present algorithms for spatial grouping and temporal scheduling to tackle these problems.