A single KPI never tells the complete network story.
Accessibility — Can users connect successfully?
RRC, S1 and E-RAB setup success rates.
Retainability — Can sessions remain connected?
E-RAB and VoLTE drop rates.
Mobility — Can users move without interruption?
Intra-frequency, inter-frequency and IRAT handover success.
Integrity — Is the service delivered with good quality?
Throughput, latency and DL BLER.
Availability — Is the cell ready to serve?
Cell availability and service downtime.
Capacity & Utilization — Can the network handle demand?
PRB utilization, active users and traffic volume.
A network may have excellent accessibility but poor retainability,or strong coverage but weak throughput because of congestion or interference.
Effective optimization comes from correlating all KPI dimensions with RF conditions, traffic and real user experience.
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