ETSI TR 102 678 V1.1.1 (2009-11)

Speech and multimedia Transmission Quality (STQ); QoS Parameter Measurements based on fixed Data Transfer Times

DTR/STQ-00136m

General Information

• Status: Published
• Publication Date: 15-Nov-2009
• Technical Committee: STQ MOBILE - STQ Mobile
• Current Stage: 12 - Completion
• Due Date: 12-Nov-2009
• Completion Date: 16-Nov-2009

Standards Content (Sample)

ETSI TR 102 678 V1.1.1 (2009-11)
Technical Report


Speech and multimedia Transmission Quality (STQ);
QoS Parameter Measurements
based on fixed Data Transfer Times

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2 ETSI TR 102 678 V1.1.1 (2009-11)



Reference
DTR/STQ-00136m
Keywords
3G, GSM, network, QoS, service
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3 ETSI TR 102 678 V1.1.1 (2009-11)
Contents
Intellectual Property Rights . 4
Foreword . 4
Introduction . 4
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 6
3 Definitions, symbols and abbreviations . 7
3.1 Definitions . 7
3.2 Symbols . 7
3.3 Abbreviations . 7
4 FDTT-QoS General Concept . 7
4.1 Concept of FDTT-QoS . 7
4.2 Event diagrams . 8
4.2.1 Diagram of Events for FTP download, active mode . 8
4.2.2 Diagram of Events for FTP download, passive mode . 9
4.2.3 Diagram of Events for FTP upload, active mode . 10
4.2.4 Diagram of Events for FTP upload, passive mode . 11
4.2.5 Diagram of Events for HTTP download . 11
4.3 Usage recommendation . 12
4.4 Relation to QoS parameters . 12
5 Direct Services QoS Parameters . 12
5.1 File Transfer (FTP) . 12
5.1.1 FDTT-QoS FTP {Download|Upload} Mean Data Rate [kbit/s] . 12
5.1.1.1 Abstract Definition . 12
5.1.1.2 Abstract Equation . 12
5.1.1.3 Trigger Points . 13
5.1.2 FDTT-QoS FTP {Download|Upload} Data Transfer Non-Stability [%] . 13
5.1.2.1 Abstract Definition . 13
5.1.2.2 Abstract Equation . 13
5.1.2.3 Trigger Points . 14
5.2 Web Browsing (HTTP) . 14
5.2.1 FDTT-QoS HTTP Mean Data Rate [kbit/s] . 14
5.2.1.1 Abstract Definition . 14
5.2.1.2 Abstract Equation . 14
5.2.1.3 Trigger Points . 15
5.2.2 FDTT-QoS HTTP Data Transfer Non-Stability [%] . 15
5.2.2.1 Abstract Definition . 15
5.2.2.2 Abstract Equation . 15
5.2.2.3 Trigger Points . 15
6 Summary and conclusion . 15
History . 16

ETSI

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4 ETSI TR 102 678 V1.1.1 (2009-11)
Intellectual Property Rights
IPRs essential or potentially essential to the present document 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 (http://webapp.etsi.org/IPR/home.asp).
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.
Foreword
This Technical Report (TR) has been produced by ETSI Technical Committee Speech and multimedia Transmission
Quality (STQ).
Introduction
The present document defines QoS parameters and the corresponding measurement and evaluation procedures as a
supplement to the ones defined in TS 102 250-2 [i.1].
For the QoS parameters proposed in this document the term Fixed Data Transfer Time QoS (FDTT-QoS) parameters is
used.
The main purpose of proposing the concept of FDTT-QoS parameters is to fulfil the common request for many QoS
measurements to have a limited and regular run time for individual measurement tasks. Due to the wide range of uplink
and downlink throughput in modern mobile communication networks, limited and regular run times cannot be provided
when having e.g. fixed object (file) sizes for the measurements.
Limited runtime is required to ensure that all measurement tasks are finished before the data window ends, where the
term data window is used to define the time period from the start of one data session (containing one or several
measurement tasks) to the start of the next data session and the time duration of the data window is set to a constant
value. For example a data session consists of 3 measurement tasks - FTP DL, FTP UL and HTTP. Limited time for each
task (e.g. 30 s) ensures, that the data session will be completed in 3 × 30 s and all tasks (FTP DL, FTP UL and HTTP)
will be performed.
Regular run time is required to ensure that a minimum percentage of the data window is used for measurements.
This document describes how the requirement of regular and limited runtime can be achieved by using these
FDTT-QoS parameters for data measurements, especially for FTP and HTTP data transfers.
Advantages of the FDTT-QoS parameters and measurement method:
• Low variation between minimum and maximum measurement time. This is important if measurements are
done in regular intervals.
• Required measurement time for slow connections is reduced while maintaining the accuracy for high speed
connections.
• Better distribution of measurements in drive tests. Using FDTT-QoS measurements, the same number of tasks
or job executions per time interval can be achieved regardless of the network access technology.
• Better resource utilization. To determine the throughput a certain time is required as several processes in the
network are time dependent. Thus, a time based measurement concept for throughput measurements has the
advantage of providing reliable measurement values for fast connections while not wasting network capacity
for slow connections.
ETSI

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5 ETSI TR 102 678 V1.1.1 (2009-11)
List of QoS parameters from TS 102 250-2 [i.1] for which supplement definitions in terms of FDTT-QoS parameters
are provided within this document:
• FTP {Download|Upload} Mean Data Rate [kbit/s];
• FTP {Download|Upload} Data Transfer Cut-Off Ratio [%];
• HTTP Mean Data Rate [kbit/s];
• HTTP Data Transfer Cut-Off Ratio [%].
ETSI

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6 ETSI TR 102 678 V1.1.1 (2009-11)
1 Scope
The present document defines QoS parameters and the corresponding measurement and evaluation procedures as a
supplement to the ones defined in TS 102 250-2 [i.1].
This document discusses the concept of Fixed Data Transfer Time QoS (FDTT-QoS) parameters, their methods and
validity rules and describes how the requirement of regular and limited runtime can be achieved by using the
FDTT-QoS parameters for data measurements, especially for FTP and HTTP data transfers.
2 References
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• Non-specific reference may be made only to a complete document or a part thereof and only in the following
cases:
- if it is accepted that it will be possible to use all future changes of the referenced document for the
purposes of the referring document;
- for informative references.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://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.
2.1 Normative references
The following referenced documents are indispensable for the application of the present document. For dated
references, only the edition cited applies. For non-specific references, the latest edition of the referenced document
(including any amendments) applies.
Not applicable.
2.2 Informative references
The following referenced documents are not essential to the use of the present document but they assist the user with
regard to a particular subject area. For non-specific references, the latest version of the referenced document (including
any amendments) applies.
[i.1] ETSI TS 102 250-2: "Speech and multimedia Transmission Quality (STQ); QoS aspects for
popular services in GSM and 3G networks; Part 2: Definition of Quality of Service parameters and
their computation".
ETSI

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7 ETSI TR 102 678 V1.1.1 (2009-11)
3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in the ETSI Directives and the
following apply:
Fixed Data Transfer Time QoS (FDTT-QoS) parameters: QoS parameters which are defined as supplement to
selected QoS parameters
...