Question: Under what condition does a UE performing transmissions on LAA Scell(s) or channel(s) **not** perform the uplink channel access procedures?
Option 1: When the UE has a gap between its transmissions.
Option 2: When the eNB/gNB is not scheduling any UL transmission for the UE.
Option 3: When the higher layer parameter `channelAccessMode-r16` is provided and set to `'semiStatic'`.
Option 4: When Layer 1 fails to notify higher layers about channel access.
Explanation: A UE is exempt from performing uplink channel access procedures on shared spectrum channels if the `channelAccessMode-r16` parameter is set to `'semiStatic'`, indicating a predefined access mode that deviates from dynamic access procedures.