3 Definitions, abbreviations and measurement family

28.5523GPP5G performance measurementsManagement and orchestrationRelease 18TS

3.1 Definitions

For the purposes of the present document, the terms and definitions given in TR 21.905 [1] and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905 [1].

Conditional handover: A handover which is executed by the UE.

Dual Active Protocol Stack: A procedure for handovers where the UE connects to the target before it releases the connection to the source.

IP latency: the time it takes to transfer a first/initial packet in a data burst from one point to another.

Legacy handover: A handover that is executed by the source gNB, in contrast to Conditional Handover.

Mapped 5QI: 5QI that is used for a DRB within the gNB when a single 5QI is assigned to the DRB.

NOTE1: In this case the mapped 5QI is used for separating certain measurements per QoS class.

NOTE 2: Individual QoS flows into a common 5QI is specified in TS 38.473 [6].

Packet delay: the time it takes to transfer any packet from one point to another.

Packet drop rate: share of packets that were not sent to the target due to high traffic load or traffic management and should be seen as a part of the packet loss rate.

Packet loss rate: share of packets that could not be received by the target, including packets droped, packets lost in transmission and packets received in wrong format.

Performance indicators: The performance data aggregated over a group of NFs which is derived from the performance measurements collected at the NFs that belong to the group, according to the aggregation method identified in the Performance Indicator definition.

3.2 Abbreviations

For the purposes of the present document, the abbreviations given in TR 21.905 [1], TS 23.501 [4] and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905 [1] and TS 23.501 [4].

CHO Conditional Handover

DAPS Dual Active Protocol Stack

HO Handover

kbit kilobit (1000 bits)

LHO Legacy Handover

MN Master Node.

NG-RAN Next Generation Radio Access Network

PI Performance Indicator

SN Secondary Node.

TEID Tunnel Endpoint IDentifier

GP Guard Period

SRS Sounding Reference Signal

3.3 Measurement family

The measurement names defined in the present document are all beginning with a prefix containing the measurement family name. This family name identifies all measurements which relate to a given functionality and it may be used for measurement administration.

The list of families currently used in the present document is as follows:

– DRB (measurements related to Data Radio Bearer).

– RRC (measurements related to Radio Resource Control).

– UECNTX (measurements related to UE Context).

– RRU (measurements related to Radio Resource Utilization).

– RM (measurements related to Registration Management).

– SM (measurements related to Session Management).

– GTP (measurements related to GTP Management).

– IP (measurements related to IP Management).

– PA (measurements related to Policy Association).

– MM (measurements related to Mobility Management).

– VR (measurements related to Virtualized Resource).

– CARR (measurements related to Carrier).

– QF (measurements related to QoS Flow).

– AT (measurements related to Application Triggering).

– SMS (measurements related to Short Message Service).

– PEE (measurements related to Power, Energy and Environment).

– NFS (measurements related to NF service).

– PFD (measurements related to Packet Flow Description).

– RACH (measurements related to Random Access Channel).

– MR (measurements related to Measurement Report).

– L1M (measurements related to Layer 1 Measurement).

– NSS (measurements related to Network Slice Selection).

– PAG (measurements related to Paging).

– NIDD (measurements related to Non-IP Data Delivery).

– EPP (measurements related to external parameter provisioning).

– TI (measurements related to traffic influence).

– CE (measurements related to Connection Establishment).

– SPP (measurements related to Service Parameter Provisioning).

– BDTP (measurements related to Background Data Transfer Policy).

– DM (measurements related to Data Management).

– AFQ (measurements related to AF session with QoS).

– UCM (measurements related to UE radio Capability Management).

– PAU (measurements related to Policy Authorization).

– EEX (measurements related to Event Exposure).

– SDM (measurements related to subscriber data management).

– PPV (measurements related to parameter provisioning).

– DIS (measurements related to discovery).

– Location Management (measurements related to Location Management).

– SP (measurement related to service provisioning).