Question: In a shared spectrum channel access scenario using Type 2 channel access procedures, what condition must be met before a UE can transmit on a channel for an unscheduled UL (Uplink) transmission, considering the UE's capabilities?
Option 1: The UE must have successfully completed at least one DL (Downlink) reception prior to the UL transmission.
Option 2: The UE and gNB (gNodeB) must have a synchronized clock for sensing slot alignment.
Option 3: The channel must be sensed idle for a duration spanning multiple sensing slots without interruption.
Option 4: The UE must have indicated its capability to apply Type 2 channel access procedures for UL transmissions beforehand.
Explanation: This is because, as per the described procedure, a UE is not expected to be scheduled for applying Type 2 channel access for a UL transmission until it has signaled its capability to do so. This ensures that the network (gNB) is aware of the UE's support for this specific channel access method before scheduling such transmissions, which is crucial for efficient and conflict-free shared spectrum usage.