Question: What is the definition of transmit OFF power for a category NB1 and NB2 UE with 3.75kHz sub-carrier spacing in E-UTRA?
Option 1: Mean power in one sub-frame (1ms)
Option 2: Mean power in one slot (2ms)
Option 3: Mean power over one RU
Option 4: Peak power in one transmission time interval
Explanation: According to the E-UTRA general ON/OFF time mask, for category NB1 and NB2 UE with 3.75kHz sub-carrier spacing, the transmit OFF power is defined as mean power in one slot (2ms), excluding any transient periods.