Question: What is the primary purpose of defining the Reference Sensitivity Power Level (PREFSENS) in E-UTRA Base Station (BS) specifications?
Option 1: To ensure maximum transmission power for all BS configurations
Option 2: To establish a uniform noise floor across all E-UTRA deployments
Option 3: To define the minimum antenna gain required for BS antennas
Option 4: To guarantee a specified throughput for a reference measurement channel at the minimum receivable mean power
Explanation: The correct answer, Option 4, highlights the essence of PREFSENS as defined in the context of E-UTRA BS specifications. It is about ensuring that a base station can achieve a certain level of throughput (a key performance indicator for data transmission) when receiving at its minimum specified mean power level for a particular reference measurement channel. This directly impacts the quality of service and network planning, making it a crucial technical specification in telecom networks.