Question: What action does the MAC entity take upon successful decoding of a Transport Block (TB) on the Sidelink Broadcast Channel (SL-BCH)?
Option 1: Discard the decoded MAC PDU and request retransmission.
Option 2: Store the decoded MAC PDU for later processing without notifying upper layers.
Option 3: Attempt to decode additional TBs on the SL-BCH before taking further action.
Option 4: Deliver the decoded MAC PDU to upper layers.
Explanation: Upon successfully decoding a Transport Block (TB) on the Sidelink Broadcast Channel (SL-BCH), the primary goal is to ensure that the received data is utilized by the device. Delivering the decoded MAC Protocol Data Unit (PDU) to upper layers enables further processing and appropriate handling of the received information, aligning with the purpose of successful decoding in a telecommunications network. This action facilitates the practical application of received data in various services relying on sidelink communications, such as public safety or vehicle-to-everything (V2X) communications.