Question: What action does the MAC entity take upon successful decoding of a Transport Block (TB) on the Broadcast Channel (BCH)?
Option 1: Discard the decoded MAC PDU and await further instructions from lower layers.
Option 2: Initiate a random access procedure to acknowledge the BCH reception.
Option 3: Deliver the decoded MAC PDU to upper layers for further processing.
Option 4: Store the decoded MAC PDU locally without forwarding it immediately.
Explanation: Upon successfully decoding a Transport Block on the Broadcast Channel, the primary goal is to ensure that the received information, now in the form of a decoded MAC Protocol Data Unit (PDU), is utilized by the appropriate components within the network. Delivering this PDU to upper layers facilitates the dissemination and application of the broadcasted information, aligning with the fundamental purpose of BCH - to convey system information crucial for UE's (User Equipment) operation and connectivity. This action enables the UE to update its configuration or take necessary actions based on the received broadcast messages.