Sensor System of Master and Slave Sensors, and Method Therein

A method in a sensor system for providing quality data to a network node, the sensor system comprising a first group of sensors, the first group of sensors comprising a first single-purpose slave sensor, a second single-purpose slave sensor and a first master sensor, the method comprising:

• transmitting by at least a fraction of the plurality of single-purpose slave sensors, sensor data towards the at least one master sensor;
• the first master sensor receiving first sense data transmitted by the first single-purpose slave sensor;
• the first master sensor receiving second sensor data transmitted by the second single-purpose slave sensor;
• evaluating, by the first master sensor, a data quality of the first sensor data to determine whether the evaluated data quality of the first sensor data is higher than a data quality threshold;
• evaluating, by the first master sensor, a data quality of the second sensor data to determine whether the evaluated data quality of the second sensor data is higher than the data quality threshold;
• forwarding, by the first master sensor, to the network node at least a representation of the first sensor data, wherein the evaluated data quality of the first sensor data is higher than the data quality threshold;
• and
• sending by the first master sensor, a feedback message to the second single-purpose slave sensor, the feedback message being based on an updated reliability metric of the second single-purpose slave sensor, wherein the evaluated data quality of the second sensor data is lower than the data quality threshold.