Meaning
Accumulation registers for tracking radio transmission times collect the total duration of active signals within a specified time window to enforce regulatory limits. In license free frequency bands, the duty cycle aggregation bucket prevents the device from exceeding the maximum on air time permitted by regional telecommunications authorities.
Regulatory Compliance
Regional authorities define strict limits on the percentage of time a device can occupy a specific radio channel. For example, European standards often limit sub gigahertz transmissions to a duty cycle of one percent over a one hour rolling window. The duty cycle aggregation bucket provides the historical data needed to calculate this percentage, ensuring that the device remains within the legal boundaries.
Firmware Enforcement
When the accumulated time approaches the threshold, the device delays outgoing messages. Routine reports are queued until the duty cycle aggregation bucket drains.
Memory Allocations
The tracking register must be stored in non volatile memory if the device is subject to frequent power resets. If the duty cycle aggregation bucket is reset to zero whenever the device reboots, a malfunctioning system could continuously reboot and transmit, violating regulatory limits. Storing the state ensures that the transmission history is preserved across power cycles.
