Question: In DCI Format 1C, when used for reconfiguring TDD (Time Division Duplexing) in an E-UTRA network, what determines the specific UL/DL configuration to be applied from the indicated set?
Option 1: A 5-bit Modulation and Coding Scheme indicator
Option 2: A 1-bit Gap Value indicator
Option 3: The `eimta-UL-DL-ConfigIndex` parameter provided by higher layers
Option 4: An 8-bit Resource Block Assignment field
Explanation: When DCI Format 1C is utilized for reconfiguring TDD, the specific UL/DL configuration to be applied from the set of configurations indicated (each represented by a 3-bit UL/DL configuration number) is determined by the `eimta-UL-DL-ConfigIndex` parameter. This parameter is provided by higher layers and serves as an index to select the appropriate UL/DL configuration for a serving cell, ensuring proper TDD reconfiguration based on network requirements.