ETSI TS 102 250-7 V1.2.1 (2019-11)

Speech and multimedia Transmission Quality (STQ); QoS aspects for popular services in mobile networks; Part 7: Network based Quality of Service measurements

RTS/STQ-00224-7m

General Information

• Status: Published
• Publication Date: 11-Nov-2019
• Technical Committee: STQ MOBILE - STQ Mobile
• Current Stage: 12 - Completion
• Due Date: 09-Nov-2019
• Completion Date: 12-Nov-2019

Standards Content (Sample)

ETSI TS 102 250-7 V1.2.1 (2019-11)






TECHNICAL SPECIFICATION
Speech and multimedia Transmission Quality (STQ);
QoS aspects for popular services in mobile networks;
Part 7: Network based Quality of Service measurements

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2 ETSI TS 102 250-7 V1.2.1 (2019-11)



Reference
RTS/STQ-00224-7m
Keywords
3G, GSM, network, QoS, service, speech
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3 ETSI TS 102 250-7 V1.2.1 (2019-11)
Contents
Intellectual Property Rights . 4
Foreword . 4
Modal verbs terminology . 4
Introduction . 4
1 Scope . 5
2 References . 5
2.1 Normative references . 5
2.2 Informative references . 5
3 Definition of terms, symbols and abbreviations . 6
3.1 Terms . 6
3.2 Symbols . 6
3.3 Abbreviations . 6
4 Network Measurement Basics . 7
4.1 Point of Control and Observation (PCO) . 7
4.2 Point of Recording (POR) . 7
5 Measuring QoS Parameters in the Network . 8
5.1 General Overview. 8
5.2 Service Accessibility QoS Parameters . 8
5.3 Service Retainability QoS Parameters . 8
5.4 Service Integrity QoS Parameters . 8
5.4.1 Overview . 8
5.4.2 Media Quality Parameters . 9
5.4.3 Response Time Parameters . 9
5.4.4 Data Rate Parameters . 9
6 Comparing Network and End-point Test Measurements . 9
Annex A (informative): The concept of QoE reporting . 11
Annex B (informative): Examples of Network Based QoS Measurements . 12
B.1 Accessibility and Retainability Parameters . 12
B.2 Media Quality Parameters . 12
B.3 Response Time Parameters . 13
B.4 Data Rate Parameters . 14
Annex C (informative): 3GPP SA5 "UE Management" . 16
Annex D (informative): Bibliography . 17
History . 18

ETSI

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4 ETSI TS 102 250-7 V1.2.1 (2019-11)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
Foreword
This Technical Specification (TS) has been produced by ETSI Technical Committee Speech and multimedia
Transmission Quality (STQ).
The present document is part 7 of a multi-part deliverable. Full details of the entire series can be found in part 1 [10].
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
Introduction
Measurements of service performance can be done either with an end-point test measurement tool, ether stationary or
mobile drive test, or inside the network itself. The measurements should always be done from an end-user perspective,
independent of the measurement point. Obviously a measurement done inside the network might not give exactly the
same result as a measurement done in the end-point with a test tool.
However, also the network measurement can give valuable information about service performance as the end-user
perceives it. It is also possible to take more samples of the service performance with a network based measurement than
with an end-point test tool. The service performance measurements discussed presented in the present document need
all be based on standardized protocols and interfaces.
The quality of service parameters in ETSI TS 102 250-2 [1] are initially specified for an end-point test tool
measurement scenario. However, the parameters can be reused for network based measurements with some limitations
and minor changes.
ETSI

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5 ETSI TS 102 250-7 V1.2.1 (2019-11)
1 Scope
The present document specifies how the quality of service parameters, listed in ETSI TS 102 250-2 [1], should be used
for measurements done inside a network, in contrary to measurements done in the end-point with a test tool. A test tool
can be either stationary or a drive test tool. The measurements of the QoS parameters according to the present document
should be done using standardized interfaces and protocols. This is done to ensure that all measurements in a
multi-vendor network can be compared.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
https://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
[1] ETSI TS 102 250-2: "Speech and multimedia Transmission Quality (STQ); QoS aspects for
popular services in mobile networks; Part 2: Definition of Quality of Service parameters and their
computation".
[2] Void.
[3] ETSI TS 126 234: "Universal Mobile Telecommunications System (UMTS); LTE; Transparent
end-to-end Packet-switched Streaming Service (PSS); Protocols and codecs (3GPP TS 26.234)".
[4] ETSI TS 126 346: "Universal Mobile Telecommunications System (UMTS); LTE; Multimedia
Broadcast/Multicast Service (MBMS); Protocols and codecs (3GPP TS 26.346)".
[5] ETSI TS 126 114: "Universal Mobile Telecommunications System (UMTS); LTE; IP Multimedia
Subsystem (IMS); Multimedia telephony; Media handling and interaction (3GPP TS 26.114)".
[6] Recommendation ITU-T P.564: "Conformance testing for voice over IP transmission quality
assessment models".
[7] Recommendation ITU-T P.862.1: "Mapping function for transforming P.862 raw result scores to
MOS-LQO".
[8] Void.
[9] ETSI TS 124 008: "Digital cellular telecommunications system (Phase 2+); Universal Mobile
Telecommunications System (UMTS); LTE; Mobile radio interface Layer 3 specification; Core
network protocols; Stage 3 (3GPP TS 24.008 Release 8)".
[10] ETSI TS 102 250-1: "Speech and multimedia Transmission Quality (STQ); QoS aspects for
popular services in mobile networks; Part 1: Assessment of Quality of Service".
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
ETSI

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6 ETSI TS 102 250-7 V1.2.1 (2019-11)
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
Not applicable.
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
drive test tool: end-point test tool which is designed to be moved around, i.e. by walking or driving a car
end-point test tool: typically especially designed mobile which uses active test calls to collect measurements
stationary tool: end-point test tool which is installed in a fixed location
3.2 Symbols
Void.
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
rd
3G 3 Generation
3GPP Third Generation Partnership Project
ACK Acknowledgement
FTP File Transfer Protocol
Gn Interface between GSN nodes
GPRS General Packet Radio Service
GSM Global System for Mobile communications
GSN GPRS Support Node
Iub Interface between RNC and Node B
MO Mobile-Originated
MT Mobile-Terminated
PCO Point of Control and Observation
PoC Push to talk over Cellular
POR Point Of Recording
QoE Quality of Experience
QoS Quality of Service
RNC Radio Network Controller
RRC Radio Resource Control
SGSN Serving GPRS Support Node
TCP Transmission Control Protocol
UE User Equipment
ETSI

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7 ETSI TS 102 250-7 V1.2.1 (2019-11)
4 Network Measurement Basics
4.1 Point of Control and Observation (PCO)
The Point of Control and Observation (from now on called "point of observation" or PCO) is the location where the
measurement is actually performed. The location can be either inside the network or in the end-point. The
measurements should be done using standardized interfaces and protocols.
Possible points of observation for QoS parameters covered in the present document are:
• Inside nodes in the network (RNC, base station, switch, etc.).
• Observations in the terminal:
- end-point test tool; or
- measurements that are reported back from the terminal to the network.
PCO in network node
or at network node
POR in a network node and
interface
PCO in mobile data is reported from a PCO in
(can be multiple PCO) a terminal
Higher
layer
Network node
Network node
Node B
RRC
RLC/MAC
L1

Figure 1: Points of Observation, Points of Recording and Measurement Reporting
4.2 Point of Recording (POR)
The point of recording (POR) is where the QoS parameters are recorded. The POR can be the same as the PCO or
another point inside the terminal or the network. If the PCO and the POR are not the same, the measurement data shall
be reported from the PCO to the POR. Examples of such reporting are described in annex A.
ETSI

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8 ETSI TS 102 250-7 V1.2.1 (2019-11)
5 Measuring QoS Parameters in the Network
5.1 General Overview
The quality of service measurements should be done as much as possible in the same way inside the network as they are
done in the end-point with a test tool. Many types of measurements can be done with the same trigger points (for
instance, the reception of a certain protocol message) independent of the point of measurement, but the measurement
result might differ slightly depending on where in the call or transmission chain the PCO is located.
5.2 Service Accessibility QoS Parameters
Accessibility QoS parameters reflects the ability to initiate or intentionally terminate a connection or a service. The
parameters can be divided into the following groups:
• Failure parameters: Reflects the outcome of attempts to initiate a connection or a service. For mobile-
originated (MO) cases the network might sometimes be unaware of some of the attempts, and network-based
parameters can be expected to give a slightly more positive view of the
...