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TS 28.402
Performance Measurements for EPC
and non-3GPP access Interworking System

Use "3GPP‑Page" to get the Word version, and "ETSI‑search" to get the PDF version
V16.0.0 (PDF)  2020/06  13 p.
V15.0.0  2018/06  13 p.
V14.0.0  2017/03  13 p.
V13.0.0  2016/01  13 p.
V12.0.0  2014/09  13 p.
Rapporteur:
Mr. Chen, Gang

Content for  TS 28.402  Word version:  16.0.0

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0  IntroductionWord‑p. 4
The present document is part of a TS-family covering the 3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Telecommunication management; as identified below:
32.401
Performance Management (PM); Concept and requirements
52.402
Performance Management (PM); Performance measurements - GSM
32.404
Performance Management (PM); Performance measurements - Definitions and template
32.405
Performance Management (PM); Performance measurements Universal Terrestrial Radio Access Network (UTRAN)
32.406
Performance Management (PM); Performance measurements Core Network (CN) Packet Switched (PS) domain
32.407
Performance Management (PM); Performance measurements Core Network (CN) Circuit Switched (CS) domain
32.408
Performance Management (PM); Performance measurements Teleservice
32.409
Performance Management (PM); Performance measurements IP Multimedia Subsystem (IMS)
32.425
Telecommunication management; Performance Management (PM); Performance measurements Evolved Universal Terrestrial Radio Access Network (E-UTRAN)
32.426
Telecommunication management; Performance Management (PM); Performance measurements Evolved Packet Core (EPC) network
32.452
Performance Management (PM); Performance measurements Home Node B Subsystem (HNS)
32.453
Performance Management (PM); Performance measurements Home enhanced Node B Subsystem (HeNS)
28.402
Performance Management (PM); Performance measurements for Evolved Packet Core (EPC) and non-3GPP access Interworking System
The present document is part of a set of specifications, which describe the requirements and information model necessary for the standardized Operation, Administration and Maintenance (OA&M) of the Evolved Packet Core (EPC) and non-3GPP access Interworking System (TS 23.402).
During the lifetime of EPC and non-3GPP access network interworking, its logical and physical configuration undergo changes of varying degrees and frequencies in order to optimize the utilization of the network resources. These changes are executed through network configuration management activities and/or network engineering, see TS 32.600.
Many of the activities involved in the daily operation and future network planning of interworking require data on which to base decisions. This data refers to the load carried by the network and the grade of service offered. In order to produce this data performance measurements are executed in the NEs, which comprise the network. The data can then be transferred to an external system, e.g. an Operations System (OS) in TMN terminology, for further evaluation.
Annex B of TS 32.404 helps in the definition of new performance measurements that can be submitted to 3GPP for potential adoption and inclusion in the present document. Annex B of TS 32.404 discusses a top-down performance measurement definition methodology that focuses on how the end-user of performance measurements can use the measurements.
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1  ScopeWord‑p. 6
The present document describes the measurements for EPC and non-3GPP access network interworking.
TS 32.401 describes Performance Management concepts and requirements.
The present document is valid for all measurement types provided by an implementation of EPC and non-3GPP access Interworking System. Only measurement types that are specific to EPC and non-3GPP access interworking are defined within the present documents. Vendor specific measurement types used in EPC and non-3GPP access Interworking System are not covered. Instead, these could be applied according to manufacturer's documentation.
Measurements related to "external" technologies (such as ATM or IP) as described by "external" standards bodies (e.g. ITU-T or IETF) are only be referenced within this specification, wherever there is a need identified for the existence of such a reference.
The definition of the standard measurements is intended to result in comparability of measurement data produced in a multi-vendor network, for those measurement types that can be standardised across all vendors' implementations.
The structure of the present document is as follows:
  • Header 1: Network Element (e.g. measurements related to ePDG);
  • Header 2: Measurement function (e.g. Tunnel establishment);
  • Header 3: Measurements.
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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]  TS 32.600   "Telecommunication management; Configuration Management (CM); Concept and high-level requirements".
[2]  TS 32.404   "Performance Management (PM); Performance measurements - Definitions and template".
[3]  TS 32.401   "Telecommunication management; Performance Management (PM); Concept and requirements".
[4]  TS 23.402   "Architecture enhancements for non-3GPP accesses".
[5]  TR 21.905   "Vocabulary for 3GPP Specifications".
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3  Definitions and abbreviationsWord‑p. 7
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.
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 (see TS 32.401).
The list of families currently used in the present document is as follows:
  • SUB (measurements related to Subscriber Management)
  • TUN (measurements related to Tunnel Establishment Management)
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3.2  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.
AAA
Access, Authentication and Authorisation
ePDG
Evolved Packet Data Gateway
4  Measurements related to ePDGWord‑p. 8
4.1  Tunnel establishment measurements
The measurements types defined in subclause 4.1 are subject to the "2 out of 3 approach".
4.1.1  Attempted tunnel establishment
  1. This measurement provides the number of attempted tunnel establishment
  2. CC
  3. Receipt of tunnel establishment request message from UE to ePDG
  4. A single integer value
  5. TUN.TunEst Att
  6. EPDGFunction
  7. Valid for packet switched traffic.
  8. EPS
4.1.2  Successful tunnel establishment
  1. This measurement provides the number of successful tunnel establishment
  2. CC.
  3. Transmission of tunnel establishment response message from ePDG to UE
  4. A single integer value.
  5. TUN.TunEstSucc
  6. EPDGFunction
  7. Valid for packet switched traffic.
  8. EPS
4.1.3  Failed tunnel establishment
  1. This measurement provides the number of failed tunnel establishment
  2. CC
  3. Transmission of tunnel establishment reject message from ePDG to UE
  4. A single integer value.
  5. TUN.TunEstFail
  6. EPDGFunction
  7. Valid for packet switched traffic.
  8. EPS
5  Measurements related to 3GPP AAA ServerWord‑p. 9
5.1  Attached subscribers measurement
5.1.1  Mean number of attached subscribers
  1. This measurement provides the mean number of attached state subscribers
  2. SI
  3. This measurement is obtained by sampling at a pre-defined interval the number of attached subscribers in AAA server and then taking the arithmetic mean
  4. A single integer value
  5. SUB.AttachedSubNbrMean
  6. 3GPPAAAServerFunction, 3GPPAAAProxyFunction
  7. Valid for packet switching
  8. Combined
5.1.2  Maximum number of attached subscribers
  1. This measurement provides the maximum number of attached state subscribers
  2. SI
  3. This measurement is obtained by sampling at a pre-defined interval the number of attached subscribers in AAA server and then taking the maximum
  4. A single integer value
  5. SUB.AttachedSubNbrMax
  6. 3GPPAAAServerFunction, 3GPPAAAProxyFunction
  7. Valid for packet switching
  8. Combined
A  Use cases for performance measurements definitionWord‑p. 10
This annex provides the use cases for the EPC and non-3GPP access Interworking System performance measurements defined in clause 4 and clause 5.
A.1  Use case for tunnel establishment measurements
It needs to setup secure tunnels between non-3GPP UE and remote tunnel endpoint once UE attaches to interworking system. The tunnel resides between the non-3GPP UE and ePDG. In order to guarantee the user experiences, the tunnel should be established before the data is transmitted. During the period of tunnel establishment, ePDG may reject the tunnel establishment due to QoS profile request or policy enforcement in AAA servers. Those rejections would impact subsequent traffic transmission and user experiences.
It is desirable for operators to get the indications before massive rejection happened.
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A.2  Use case for attached subscribers measurement
Non-3GPP UE attach status indicates whether the non-3GPP UE is now being served by the EPC.
The non-3GPP UE attach status is maintained by the 3GPP AAA Server. In the attached state, the UE can initiate packets and receive services via EPC and non-3GPP access network interworking. Operators need to have the knowledge of the number of attached subscribers in AAA server or AAA proxy server to evaluate the capacity status of servers.
$  Change HistoryWord‑p. 11

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