(Sensor) Data aggregation is defined as the process of aggregating the data from multiple sensors to eliminate redundant transmission and provide fused information to the base station. Data aggregation usually involves the fusion of data from multiple sensors at intermediate nodes and transmission of the aggregated data to the base station (sink).

Rajagopalan, Ramesh, and Pramod K. Varshney. "Data aggregation techniques in sensor networks: A survey." (2006). Electrical Engineering and Computer Science. 22. [citation]