Question: What is the primary purpose of the `qcl-CRI-BasedCSI-Reporting-r15` field in E-UTRA UE radio access capabilities?
Option 1: To indicate UE support for beamforming in LTE TDD systems.
Option 2: To signal UE capability for enhanced Inter-Cell Interference Coordination (eICIC).
Option 3: To report UE's minimum processing time for Type 1 HARQ.
Option 4: To denote UE support for CRI-based CSI feedback for the FeCoMP feature.
Explanation: The `qcl-CRI-BasedCSI-Reporting-r15` field indicates whether a User Equipment (UE) supports Channel State Information (CSI) feedback based on Channel Quality Indicator (CQI) Reference Signals (CRI) for Further Enhanced CoMP (FeCoMP), crucial for advanced wireless communication techniques enhancing network performance and user experience through coordinated transmission points.