Question: For a Local Area NCR-MT (NR Repeater) operating in band n77, what is the minimum number of Rx antenna ports required for verification of single carrier REFSENS requirements?
Option 1: One Rx antenna port
Option 2: Two Rx antenna ports
Option 3: Four Rx antenna ports (but verified with two for this specific requirement)
Option 4: Eight Rx antenna ports
Explanation: Although the NCR-MT in band n77 is required to be equipped with a minimum of four Rx antenna ports, specifically for single carrier REFSENS requirements, verification shall be done with two Rx antenna ports, even if more are present. This highlights the nuanced application of antenna port requirements based on the specific performance characteristic being verified.