Key Performance Indicators (KPI) in 4G

eRAB Establishment Success Rate (%)
Abnormal eRAB Release (%)
Total number of eRABs (per cell)
RRC establishment Success Rate (%)
Intra LTE mobility Success Rate (%)
Connected Users License capacity limit (per RBS)
Average percentile of Connected Users License utilization (per RBS)
Connected Users License (CUL) Time Congestion (per cell)
RRC Failure Rate due to CUL (per cell)
Peak number of Connected Users (per cell)
DL Baseband Capacity utilization per RBS (%)
UL Baseband Capacity utilization per RBS (%)
Average DUL main Processor Load (%)
Peak number of UE in RRC_CONNECTED mode
Number of neighbour relations added by the ANR function
Number of neighbour relations removed by the ANR function
PDCCH utilization per cell (%)
Average UE DL Throughput (Mbps)
Average UE UL Throughput (Mbps)
DL PDCP volume per cell (kilobits)
UL PDCP volume per cell (kilobits)
Average cell throughput (PDCP DRB) DL (kbps)
Average cell throughput (PDCP DRB) UL (kbps)
Max UE DL Latency (ms)
Physical Resource Block (PRB)
DL Physical Resource Block (PRB) utilization (per cell)
UL Physical Resource Block (PRB) utilization (per cell)
Average Noise and Interference Power on PUSCH
Average Noise and Interference Power on PUCCH
S1 SIG Connection Establishment Success Rate(%)
Number of Received Paging Messages over the S1 Interface
Successful ERAB Accessibility Rate(%)
DL Packet Loss Rate
UL Packet Loss Rate 

http://rfoptimisation.blogspot.in/2013/09/lte-kpi-measurement-methodology-and.html