Question: In HSDPA receiving performance tests for a User Equipment (UE) with an integral antenna, what assumption is made about the reference antenna's gain for converting power levels into field strength requirements?
Option 1: -3 dBi to account for potential losses
Option 2: 0 dBi to provide a standardized baseline
Option 3: +3 dBi to ensure a buffer for variable conditions
Option 4: The gain is not specified and must be measured
Explanation: For UEs with an integral antenna, assuming a reference antenna with a gain of 0 dBi provides a standardized baseline. This assumption allows for the conversion of power levels into field strength requirements in a consistent manner across different devices, ensuring fairness and comparability in conformance testing.