Abstract
PROBLEM TO BE SOLVED: To provide a wireless sensor network and data sensing method thereof, capable of saving power source consumption and reducing error. <P>SOLUTION: A prediction model is established according to sensed data (260). When a statistical value of the sensed data is within a user allowable range, the average value of the sensed data is returned to a user based on the prediction model. Alternatively, when the statistical value of the sensed data is beyond the user allowable range, actually sensed data are returned to the user based on the prediction model. In addition, the prediction model may further be dynamically updated according to subsequently received sensed data (270).