Question: When transmitting only HARQ-ACK bits on a PUCCH (Physical Uplink Control Channel), how is the UCI (Uplink Control Information) bit sequence determined for a User Equipment (UE)?
Option 1: By setting `b(0)` to `1`, where `b(i)` represents the SR (Scheduling Request) bit sequence.
Option 2: Based on the CSI (Channel State Information) report configuration.
Option 3: Using the PDCCH (Physical Downlink Control Channel) payload size.
Option 4: By setting `b(0)` to the HARQ-ACK bit sequence, with no SR bits included, as defined by standard procedures for physical layer control.
Explanation: When only HARQ-ACK (Hybrid Automatic Repeat Request Acknowledgment) bits are transmitted on a PUCCH, the UCI bit sequence is specifically determined by the HARQ-ACK bit sequence alone, without incorporating SR bits, following standard physical layer procedures for control.