An architecture and performance evaluation framework for artificial intelligence solutions in beyond 5G radio access networks

EURASIP Journal on Wireless Communications and Networking

Table 5 List of KPIs from 5G RAN functions [76]

Level	RAN function	KPI
UE-level	Radio channel info at DU	Channel quality indicator (CQI)
UE-level	Radio channel info at CU-CP for serving/neighbouring cell	RSRP, RSRQ, SINR [13, 14]
UE-level	L2 info at gNB	Average/distribution DL UE throughput, packet delay and RAN part packet delay components, data volume (per QCI, [77]), DL PDCP occupied/unused buffer size, packet loss rate per DRB/logical channel [78]
Cell-level	L2 info at DU	MCS distribution in PDSCH, total error number of DL/UL TBs (per layer at MU-MIMO case [79, 80]), average/distribution DL UE throughput in gNB (per QoS, 5QI or CQI level and per slice [79]), RAN part packet delay components [78], packet delay (per QCI [77])
Cell-level	L2 info at CU-UP and DU	Packet delay (per QoS, 5QI or CQI level and per slice [79])
Cell-level	L2 info at CU-UP or DU	Packet loss rate (per QoS/5QI/QCI level and per slice [79, 80]), DL packet drop rate (per QoS/5QI/QCI level and per slice [79, 80])