Question: For a UE (User Equipment) with HSDPA and Dual Cell E-DCH 16QAM capabilities, categorized under UE capability category 9, what is the specified frequency range from the UE centre frequency to which the spectrum emission mask applies?
Option 1: Between 1 MHz and 10 MHz
Option 2: Between 5 MHz and 15 MHz
Option 3: Between 10 MHz and 25 MHz
Option 4: Between 5 MHz and 20 MHz
Explanation: The correct answer is based on the understanding of spectrum emission mask applicability in the context of UE transmission characteristics. The specified range of between 5 MHz and 20 MHz from the UE centre frequency is crucial for ensuring that the UE's emissions do not interfere with adjacent channels, particularly for UEs supporting advanced capabilities like HSDPA and Dual Cell E-DCH 16QAM. This range is specifically defined to balance between minimizing interference and allowing for efficient spectrum usage in FDD (Frequency Division Duplex) operations for Release 9 and later releases.