5.19 Data inactivity monitoring

38.3213GPPMedium Access Control (MAC) protocol specificationNRRelease 17TS

The UE may be configured by RRC with a Data inactivity monitoring functionality, when in RRC_CONNECTED. RRC controls Data inactivity operation by configuring the timer dataInactivityTimer.

When dataInactivityTimer is configured, the UE shall:

1> if any MAC entity receives a MAC SDU for DTCH logical channel, DCCH logical channel, or CCCH logical channel, or multicast MTCH logical channel; or

1> if any MAC entity transmits a MAC SDU for DTCH logical channel, or DCCH logical channel:

2> start or restart dataInactivityTimer.

1> if the dataInactivityTimer expires:

2> indicate the expiry of the dataInactivityTimer to upper layers.