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Content for  TS 28.552  Word version:  17.3.1

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1  ScopeWord‑p. 18

This document specifies the performance measurements for 5G networks including network slicing. Performance measurements for NG-RAN are defined in this document (clause 5.1), and some L2 measurement definitions are inherited from TS 38.314. The performance measurements for 5GC are all defined in this document (clause 5.2 to 5.6). Related KPIs are defined to those measurements are defined in TS 28.554.
The performance measurements for NG-RAN applies also to NR option 3 in many cases, but not to the RRC connection related measurements which are handled by E-UTRAN for NR option 3 (those are measured according to TS 32.425 and related KPIs in TS 32.451).
The performance measurements are defined based on the measurement template as described in TS 32.404.
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2  References

The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
  • References are either specific (identified by date of publication, edition number, version number, etc.) or non specific.
  • For a specific reference, subsequent revisions do not apply.
  • For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
[1]
TR 21.905: "Vocabulary for 3GPP Specifications".
[2]
TS 32.401: "Telecommunication management; Performance Management (PM); Concept and requirements".
[3]
TS 32.404: "Performance Management (PM); Performance measurements - Definitions and template".
[4]
TS 23.501: "System Architecture for the 5G System".
[5]
RFC 5136:  "Defining Network Capacity".
[6]
TS 38.473: "NG-RAN; F1 Application Protocol (F1AP)".
[7]
TS 23.502: "Procedures for the 5G System".
[8]
TS 28.554: "Management and orchestration; 5G end to end Key Performance Indicators (KPI)".
[9]
TS 32.425: "Performance Management (PM); Performance measurements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN)".
[10]
TS 32.451: "Key Performance Indicators (KPI) for Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Requirements".
[11]
TS 38.413: "NG-RAN; NG Application Protocol (NGAP)".
[12]  Void.
[13]
TS 38.423: "NG-RAN; Xn Application Protocol (XnAP)".[14] 3GPP TS 29.502: "5G System; Session Management Services; Stage 3".
[15]  Void.
[16]
TS 29.244: "Technical Specification Group Core Network and Terminals; Interface between the Control Plane and the User Plane Nodes; Stage 3".
[17]
ETSI GS NFV-IFA027 v2.4.1: "Network Functions Virtualisation (NFV); Management and Orchestration; Performance Measurements Specification".
[18]
Void.
[19]
TS 38.214: "NR; Physical layer procedures for data".
[20]
TS 38.331: "NR; Radio Resource Control (RRC); Protocol specification".
[21]
TS 29.518: "5G System; Access and Mobility Management Services; Stage 3".
[22]
TS 29.413: "Application of the NG Application Protocol (NGAP) to non-3GPP access".
[23]
TS 29.122: "Technical Specification Group Core Network and Terminals; T8 reference point for Northbound APIs".
[24]
TS 24.501: "Non-Access-Stratum (NAS) protocol for 5G System (5GS); Stage 3".
[25]
ETSI ES 202 336-12 V1.2.1: "Environmental Engineering (EE); Monitoring and control interface for infrastructure equipment (power, cooling and building environment systems used in telecommunication networks); Part 12: ICT equipment power, energy and environmental parameters monitoring information model".
[26]
TS 28.541: "Management and orchestration; 5G Network Resource Model (NRM); Stage 2 and stage 3".
[27]
TS 29.274: "Evolved General Packet Radio Service (GPRS); Tunnelling Protocol for Control plane (GTPv2-C); Stage 3".
[28]
TS 29.510: "5G System; Network function repository services; Stage 3".
[29]
TS 38.314: "NR; layer 2 measurements".
[30]
TS 28.313: "Self-Organizing Networks (SON) for 5G networks".
[31]
TS 38.415: "NG-RAN; PDU session user plane protocol".
[32]
TS 38.321: "NR MAC protocol specification".
[33]
TS 38.214: "NR; Physical layer procedures for data".
[34]
TS 38.215: "NR; Physical layer measurements".
[35]
TS 38.133: "NR; Requirements for support of radio resource management".
[36]
TS 33.501: "Security architecture and procedures for 5G system".
[37]
TS 38.304: "NR; User Equipment (UE) procedures in Idle mode and RRC Inactive state".
[38]
TS 28.530: "Management and orchestration; Concepts, use cases and requirements".
[39]
TS 29.507: "5G System; Access and Mobility Policy Control Service; Stage 3".
[40]
TS 29.512: "5G System; Session Management Policy Control Service; Stage 3".
[41]
TS 29.531: "5G System; Network Slice Selection Services".
[42]
TS 29.281: "General Packet Radio System (GPRS) Tunnelling Protocol User Plane (GTPv1-U)".
[43]
TS 29.540: "5G System; SMS Services; Stage 3".
[44]
TS 29.522: "5G System; Network Exposure Function Northbound APIs; Stage 3".
[45]
TS 29.541: "5G System; Network Exposure FunctionServices for Non-IP Data Delivery (NIDD); Stage 3".
[46]
TS 23.503: "Policy and charging control framework for the 5G System (5GS); Stage 2".
[47]
TS 29.504: "5G System; Unified Data Repository Services; Stage 3".
[48]
TS 29.554: "5G System; Background Data Transfer Policy Control Service; Stage 3".
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3  Definitions, abbreviations and measurement familyWord‑p. 20

3.1  Definitions

For the purposes of the present document, the terms and definitions given in TR 21.905 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.
Conditional Handover:
A handover which is executed by the UE.
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.
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.
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3.2  Abbreviations

For the purposes of the present document, the abbreviations given in TR 21.905, TS 23.501 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 and TS 23.501.
CHO
Conditional Handover
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
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3.3  Measurement familyWord‑p. 21

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)
  • BDTP (measurements related to Background Data Transfer Policy)
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4  Concepts and overviewWord‑p. 22

4.1  Performance indicators

Performance indicators are the performance data aggregated over a group of NFs, such as, for example, average latency along the network slice. The Performance Indicators can be derived from the performance measurements collected at the NFs that belong to the group. The aggregation method is identified in the performance indicator definition
Performance indicators at the network slice subnet level can be derived from the performance measurements collected at the NFs that belong to the network slice subnets or to the constituent network slice subnets. The performance indicators at the network slice subnet level can be made available via the corresponding performance management service for network slice subnet.
The performance indicators at the network slice level, can be derived from the network slice subnet level Performance Indicators collected at the constituent network slice subnets and/or NFs. The network slice level performance indicators can be made available via the corresponding performance management service for network slice.
When providing a communication service to a tenant, the performance indicators can be derived from corresponding performance indicators related to network slice, network slice subnet and NFs and they can be made available via the corresponding performance management service, consumed by a tenant. Tenant(s) may be associated with S-NSSAI or sNSSAIList in which case, the performance indicators are split into subcounters per S-NSSAI for individual tenant.
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4.2  Filters and filter naming

4.2.0  General

In case a performance measurement is defined for more than one sub-counter, it is convenient to use Filter to define the performance measurement of interest.

4.2.1  Filters

Performance measurements may be sub-divided by use of applicable filters to form new Performance measurements (or sub counters). Any applicable Filter(s) are identified in each performance measurements definition. Performance measurements may also be defined without any applied Filter.
When no Filter is applied the performance measurement should exclude the Filter extension.
Example of possible Filter values:
  • 5QI
  • QCI
  • SNSSAI, where SNSSAI represents the S-NSSAI
  • PLMN, where PLMN represents the PLMN ID

4.2.2  Filter naming

For the Performance measurements that indicate Filters, the resulting Performance measurement name will take the form: Performance measurement_Filter
If combination of Filters is used the name will take the form: Performance measurement_Filter1_Filter2
If no Filter is used the name will take the form: Performance measurement
Example:
DRB.PdcpF1DelayDl_Filter, Where Filter is a combination of PLMN and 5QI and SNSSAI.
  • Single Filter value applied: DRB.PdcpF1DelayDl_Filter1, where Filter could be any of the possible Filter value defined for the performance measurement:
  • Sub counter name: DRB.PdcpF1DelayDl.5QI
  • Multiple (two) Filter values applied: DRB.PdcpF1DelayDl_Filter1_Filter2, where Filter1 and Filter2 could be any of the possible Filter value defined for the performance measurement:
  • Sub counter name: DRB.PdcpF1DelayDl.PLMN.5QI.
  • No Filter value applied: Counter name: DRB.PdcpF1DelayDl
For Filters the separator '_' is used to append the filter name(s) to the measurement name. For multiple Filters the order in the resulting name is not important.
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