Content for TR 38.890 Word version: 17.0.0

3.1 Definitions 3.2 Symbols 3.3 Abbreviations
...

0 Introduction Word‑p. 4

A new SI "Study on NR QoE management and optimizations for diverse services" was approved for Release 17 at the 3GPP TSG RAN #86 meeting in [2]. The SI aims to study the potential RAN side solution for supporting a generic framework for triggering, configuring, collection and reporting of NR QoE measurement for various 5G use cases.

1 Scope Word‑p. 5

The present document captures the results of study on NR QoE management and optimizations for diverse services in RP-193256 [2]. It identifies to study the framework for triggering, configuring, collection and reporting of NR QoE measurement and study the potential impact on the related interface (e.g. F1, NG, Xn interface).

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]

3GPP RP-193256: "New SID: Study on NR QoE management and optimizations for diverse services".

[3]

TS 26.247: "Transparent end-to-end Packet-switched Streaming Service (PSS); Progressive Download and Dynamic Adaptive Streaming over HTTP (3GP-DASH)".

[4]

TS 26.114: "IP Multimedia Subsystem (IMS); Multimedia Telephony; Media handling and interaction".

[5]

TS 26.118: "Virtual Reality (VR) profiles for streaming applications".

[6]

TS 26.346: "Multimedia Broadcast/Multicast Service (MBMS); Protocols and codecs".

[7]

3GPP S5-205347: "LS on QoE Measurement Collection".

[8]

3GPP S4-201576: "LS Reply on New service type of NR QoE".

3 Definitions, symbols and abbreviations

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.

QoE measurement:

An application layer measurement configured by OAM, see details in [3] [4] [5] [6] for different service types.

QoE report:

The result of a QoE measurement.

Radio-related measurements:

Measurements on the radio layer, whose purpose is to help network to further evaluate and improve the QoE.

Radio-related information:

Information other than "radio-related measurements", e.g. feature info, mobility history info or dual connectivity status.

RAN-visible QoE:

Includes RAN-visible QoE metrics and RAN-visible QoE values.

RAN-visible QoE metrics:

A subset of QoE metrics data collected from UE, which are useful for RAN.

RAN-visible QoE values:

A set of values derived from QoE metrics data through a model/function defined in collaboration with SA4.

QoE measurement collection:

Collection of QoE measurements in the UE.

QoE measurement collection activation:

Initiation of a QoE measurement collection requested by OAM, associated with an identifier included in the QoE measurement configuration transmitted to the UE.

QoE measurement collection triggering:

The condition(s) configured by OAM, whose fulfilment indicates to the UE that QoE measurement collection configured by OAM can be activated.

QoE measurement collection deactivation:

Permanent stopping of a QoE measurement collection of identifiers (previously configured) requested from OAM transmitted to the UE, resulting in QoE measurement configuration release in the UE.

QoE measurement reporting:

Delivery of the QoE report resulted from QoE measurement collection from the UE to the RAN.

QoE measurement reporting pause:

An action resulting in temporary stopping of QoE measurement reporting, where the QoE measurement collection is not affected.

QoE measurement reporting resume:

An action resulting in resumption of a previously paused QoE measurement reporting.

3.2 Symbols Word‑p. 6

For the purposes of the present document, the following symbols apply:

3.3 Abbreviations

For the purposes of the present document, the abbreviations given in TR 21.905 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.

LTE

Long Term Evolution

MBS

Multicast and Broadcast Service

MBMS

Multimedia Broadcast and Multicast Service

MCE

Measurement Collection Entity

MDT

Minimization of Drive-Tests

MTSI

Multimedia Telephony Service for IMS

NR Radio Access

QMC

QoE Measurement Collection

QoE

Quality of Experience

TCE

Trace Collection Entity

User Equipment

URLLC

Ultra-Reliable Low Latency Communication

Virtual Reality

Extended Reality

4 General

NR QoE takes LTE QoE solution as baseline, where LTE QoE solution includes the following key parts:

Both signalling based and management based initiated cases are allowed.
The LTE QoE feature is activated by Trace Function.
Application layer measurement configuration received from OAM or CN can be encapsulated in a transparent container, which is forwarded to UE in a downlink RRC message. Application layer measurements received from UE's higher layer can be encapsulated in a transparent container and sent to network in an uplink RRC message.

5 5G services, QoE metrics and UE KPI information Word‑p. 7

NR QoE supports the Application Layer Measurement Collection functionality.

This functionality enables the collection of application layer measurements from the UE. The supported service types include:

Streaming services [3];
MTSI services [4];
VR [5];
MBMS [6];
XR.

Support for additional service types is not precluded.

In addition to the QoE metrics, the radio related measurements and information to assist the NR QoE management functionality are considered.