Question: What is a prerequisite for a User Equipment (UE) to support multiple Transport Block (TB) scheduling for unicast in the uplink while operating in Coverage Enhancement Mode B?
Option 1: The UE must also support ce-ModeB-r13
Option 2: The UE needs to have a minimum of four receive antennas
Option 3: The UE should be capable of 256QAM in the uplink
Option 4: The UE has to support LTE-M (Machine Type Communications)
Explanation: For a UE to indicate support for multiple TB scheduling for unicast in the uplink while in Coverage Enhancement Mode B, it must also indicate support for ce-ModeB-r13, ensuring backward compatibility and adherence to enhanced coverage mode standards for robust communication in challenging radio conditions.