Question: For a User Equipment (UE) supporting Multimedia Broadcast/Multicast Service (MBMS), what is a requirement for MBMS reception with 256QAM, in terms of additional downlink (DL) support?
Option 1: The UE must also support ul-64QAM-r12 for uplink enhancements.
Option 2: The UE shall also support dl-256QAM-r12 as specified in the Radio Resource Control (RRC) protocol.
Option 3: MBMS reception with 256QAM mandates support for MIMO (Multiple Input Multiple Output) antenna configurations.
Option 4: The UE is required to operate exclusively in Transmit Only Mode for this feature.
Explanation: To ensure compatibility and effective transmission, a UE that supports MBMS reception with 256QAM must also be capable of handling the downlink aspects associated with this higher modulation scheme. Thus, supporting dl-256QAM-r12, as outlined in RRC protocol specification, is necessary for UEs to properly utilize MBMS with 256QAM.