Question: After receiving a MAC-CE command in slot n for TCI state switch, what is the earliest time when a UE can start receiving on the new TCI state 1?
Option 1: Immediately after slot n
Option 2: n + THARQ (Hybrid Automatic Repeat Request)
Option 3: n + 5 ms
Option 4: n + THARQ + 7 ms + Tfirst-SSB (First SSB Transmission Timing) + Trs (Additional timing for spatial relation switch)
Explanation: According to the test requirements for TCI state switch, after receiving a MAC-CE command in slot n, the UE can start receiving on the new TCI state 1 after a specific delay. This delay ensures proper synchronization and handover between transmission configurations, considering THARQ duration, an additional 7 ms for stability, the first SSB transmission timing (Tfirst-SSB), and any additional required time for spatial relation switch (Trs).