Question: What is the primary consideration for selecting environmental classes for Base Station (BS) equipment in E-UTRA?
Option 1: Mobility of the BS equipment
Option 2: Type of antenna used (e.g., omnidirectional vs. directional)
Option 3: Frequency band of operation (e.g., low-band, mid-band, high-band)
Option 4: Level of weather protection at the installation location
Explanation: The primary consideration is related to the level of weather protection, as environmental class requirements depend on whether the BS equipment is shielded from direct exposure to the elements at its installation location.