H ELECTRICITY
H04 ELECTRIC COMMUNICATION TECHNIQUE
H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
43/00 Arrangements for monitoring or testing data switching networks
H04L43/08 Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
H04L43/0876 Network utilisation, e.g. volume of load or congestion level