Meaning
Core network overload regulation standards in mobile communication protocols prevent network congestion by instructing cellular modems to pause attachment attempts for a specified duration. The action of timer T3346 congestion control is initiated by the network when a base station or core node experiences heavy traffic, returning a wait time to the requesting device. The module must then start this timer and is forbidden from sending non-urgent signaling messages until the timer expires.
Signal Restriction
While this timer is active, the modem cannot request packet data connections or initiate network registration unless it is performing an emergency service. This restriction helps the operator recover from localized overload conditions. The module can still receive incoming signaling, but it must not generate new attachment requests.
Firmware Strategy
Host microcontrollers must detect when this timer is active and adjust their telemetry routines to avoid generating error conditions. If the application continues to trigger connection requests during this period, it may cause software errors or exhaust the retries list. The firmware should queue the telemetry data and wait for the timer to expire before trying again.
Battery Optimization
Telemetry modules can be put into a low-power sleep state during the wait period to conserve energy. Because the timer duration is defined by the network and can run for hours, keeping the modem active during this time would waste battery power. This optimization ensures that the system maintains its power budget during network congestion.
