Feature Description

The SMF sets up N3 tunnel to forward downlink packet to the UE for a PDU session when the UE is in the CM-Idle state.

The N3 tunnel profile helps in defining the Forwarding Action Rules (FAR) while moving from active to idle transition state.

The N3 tunnel profile configuration includes:

  • Enabling control plane notification (notify)

  • Enabling packet buffering on UPF (buffer UPF)