1 Internet of Thinger, Thinger.io, Madrid, Spain.
2 Ultra Tendency International GmbH, 39326 Colbitz, Germany.
3 Department of Computer Science, Universidad de Alcalá, Alcalá de Henares, 28805 Madrid, Spain.
4 Department of Computer Science and Software Engineering, Concordia University, Montreal, QC H3G 1M8, Canada.
5 Applied Artificial Intelligence Group, Universidad Carlos III de Madrid, Colmenarejo, 28270 Madrid, Spain.

In many Internet of Things (IoT) environments, the lifetime of a sensor is linked to its power supply. Sensor devices capture external information and transmit it. They also receive messages with control commands, which means that one of the largest computational overheads of sensor devices is spent on data serialization and deserialization tasks, as well as data transmission. The simpler the serialization/deserialization and the smaller the size of the information to be transmitted, the longer the lifetime of the sensor device and, consequently, the longer the service life. This paper presents a new serialization format (PSON) for these environments, which simplifies the serialization/deserialization tasks and minimizes the messages to be sent/received. The paper presents evaluation results with the most popular serialization formats, demonstrating the improvement obtained with the new PSON format.