Question: What is a prerequisite for a User Equipment (UE) to support tm9 operation in CE Mode B, as per E-UTRA specifications?
Option 1: The UE must also support ce-ModeB-r13 and tm9-CE-ModeA-r13.
Option 2: The UE only needs to comply with Physical Layer procedures (TS 36.213).
Option 3: Support for Medium Access Control (MAC) protocol is sufficient.
Option 4: Radio Resource Control (RRC) protocol alone is a prerequisite.
Explanation: For a UE to support tm9 operation in CE Mode B, it is mandatory to also indicate support for ce-ModeB-r13 and tm9-CE-ModeA-r13, ensuring comprehensive functionality across different modes. This requirement highlights the interdependence of various operational modes within E-UTRA specifications, emphasizing the need for holistic support to ensure seamless communication.