Direct lightweight temporal compression for wearable sensor data

Emerging technologies enable massive deployment of wireless sensor networks across many industries. Internet of Things (IoT) devices are often deployed in critical infrastructure or health monitoring and require fast reaction time,reasonable accuracy, and high energy efficiency. In this letter, we introduce a lossy compression method for time-seriesdata, named direct lightweight temporal compression (DLTC), enabling energy-efficient data transfer for power-restricteddevices. Our method is based on the lightweight temporal compression method, targeting further reconstruction errorminimization and complexity reduction. This letter highlights the key advantages of the proposed method and evaluates themethod’s performance on several sensor-based, time-series data types. We prove that DLTC outperforms the consideredbenchmark methods in compression efficiency at the same reconstruction error level.