Question: In a 5G NR network, after receiving a MAC-CE command in slot n for uplink TCI state switching, what is the earliest slot when UE can start transmitting PUCCH on uplink TCI state 1?
Option 1: Slot n + THARQ + (Tfirst_target-PL-RS + 4*Ttarget_PL-RS + 2ms) / NR slot length
Option 2: Immediately after slot n, without any additional delay
Option 3: Slot n + THARQ only
Option 4: Slot n + (Tfirst_target-PL-RS + 4*Ttarget_PL-RS) / NR slot length
Explanation: This answer reflects the specified timing condition for uplink TCI state switching, including HARQ round-trip time, additional delays related to Path Loss Reference Signal timings, and a buffer, ensuring proper synchronization during the TCI state switch from 0 to 1 for PUCCH transmissions.