Question: What is excluded from the Error Number of UL TBs measurement in a cell?
Option 1: All types of retransmissions
Option 2: HARQ retransmissions
Option 3: CRC failures
Option 4: Packet switched traffic errors
Explanation: The Error Number of UL TBs measurement specifically excludes HARQ (Hybrid Automatic Repeat Request) retransmissions, which are a type of retransmission used in wireless communication systems to improve reliability. This exclusion is important for accurately measuring the number of faulty transport blocks (TBs) on the uplink in a cell.