kSIST prES 283 039-2 V3.1.0:2009
(Main)Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN) - NGN Congestion and Overload Control - Part 2: Core GOCAP and NOCA Entity Behaviours
Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN) - NGN Congestion and Overload Control - Part 2: Core GOCAP and NOCA Entity Behaviours
To describe the NGN overload control architecture.
Zlite telekomunikacijske in internetne storitve ter protokoli za napredno omreženje (TISPAN) - Krmiljenje zadušitev in preobremenitev - 2. del: Obnašanje osrednjih delov GOCAP* in NOCA**
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ETSI ES 283 039-2 V3.1.1 (2010-01)
ETSI Standard
Telecommunications and Internet converged Services and
Protocols for Advanced Networking (TISPAN);
NGN Congestion and Overload Control;
Part 2: Core GOCAP and NOCA Entity Behaviours
�
---------------------- Page: 1 ----------------------
2 ETSI ES 283 039-2 V3.1.1 (2010-01)
Reference
DES/TISPAN-03034-2-NGN-R3
Keywords
control, quality, protocol
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88
Important notice
Individual copies of the present document can be downloaded from:
http://www.etsi.org
The present document may be made available in more than one electronic version or in print. In any case of existing or
perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF).
In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive
within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
http://portal.etsi.org/tb/status/status.asp
If you find errors in the present document, please send your comment to one of the following services:
http://portal.etsi.org/chaircor/ETSI_support.asp
Copyright Notification
No part may be reproduced except as authorized by written permission.
The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 2010.
All rights reserved.
TM TM TM TM
DECT , PLUGTESTS , UMTS , TIPHON , the TIPHON logo and the ETSI logo are Trade Marks of ETSI registered
for the benefit of its Members.
TM
3GPP is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners.
LTE™ is a Trade Mark of ETSI currently being registered
for the benefit of its Members and of the 3GPP Organizational Partners.
GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association.
ETSI
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3 ETSI ES 283 039-2 V3.1.1 (2010-01)
Contents
Intellectual Property Rights . 7
Foreword . 7
1 Scope . 8
2 References . 8
2.1 Normative references . 8
2.2 Informative references . 9
3 Definitions and abbreviations . 9
3.1 Definitions . 9
3.2 Abbreviations . 9
4 Control Architecture . 10
4.1 Description of NOCA Components . 10
4.2 Detailed Description of NOCA Components and Behaviour . 12
4.2.1 Overview . 12
4.2.2 Control Adaptor (CAProcess) . 14
4.2.2.1 Control Adaptor Data . 14
4.2.2.2 CAProcess signals . 15
4.2.2.3 Control Adaptor Behaviour . 15
4.2.2.4 Generating Control Adaptor Input . 19
4.2.3 Control Distribution (SDL: CDProcess) . 19
4.2.3.1 Control Distribution data . 19
4.2.3.2 Control Distribution Signals . 20
4.2.3.3 Control Distribution Behaviour . 20
4.2.4 CDRestriction . 23
4.2.4.1 CDRestriction Data . 24
4.2.4.2 CDRestrictor Signals . 24
4.2.4.3 CDRestrictor Behaviour . 25
4.2.5 Restrictor Manager (RMProcess) . 28
4.2.5.1 Restrictor Manager Data . 29
4.2.5.2 Restrictor Manager Signals . 30
4.2.5.3 Restrictor Manager Behaviour . 30
4.2.6 Restrictor . 33
4.2.6.1 Restrictor data . 34
4.2.6.2 Restrictor signals . 34
4.2.6.3 Restrictor behaviour . 34
4.2.7 GOCAP Transport . 35
4.2.7.1 The structure of the GOCAP transport layer. . 35
4.2.7.2 Channel Manager . 37
4.2.7.2.1 Channel Manager Data . 37
4.2.7.2.2 Channel Manager Signals . 37
4.2.7.2.3 Channel Manager Behaviour . 38
4.2.7.3 Shim Process . 39
4.2.7.3.1 Shim Process Signals . 39
4.2.7.3.2 Shim Process Behaviour . 39
4.2.7.4 GocapListener . 40
4.2.7.5 SessionHandler . 40
5 GOCAP over Diameter . 40
5.1 Introduction . 40
5.2 Use of the Diameter base protocol . 41
5.2.1 Advertising GOCAP support . 41
5.2.2 Securing Diameter messages . 41
5.2.3 Accounting functionality . 41
5.2.4 GOCAP commands. 41
5.2.4.1 AA-Request (AAR) command . 41
ETSI
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4 ETSI ES 283 039-2 V3.1.1 (2010-01)
5.2.4.2 AA-Answer (AAA) Command . 42
5.2.4.3 Profile-Update-Request (PUR) command . 42
5.2.4.4 Profile-Update-Answer (PUA) command . 43
5.2.4.5 Session-Termination-Request (STR) command . 43
5.2.4.6 Session-Termination-Answer (STA) command . 43
5.2.4.7 Abort-Session-Request (ASR) command . 44
5.2.4.8 Abort-Session-Answer (ASA) command . 44
5.2.5 AVP definitions . 44
5.2.5.1 Auth_Scope . 45
5.2.5.2 AVP GOCAP-Body . 45
5.2.6 Restrictions on AVP values . 45
5.2.6.1 Auth-Request-Type . 45
5.2.6.2 Auth-Session-State AVP . 45
5.3 Procedures to be used with Diameter messages . 45
5.3.1 Introduction. 45
5.3.2 Diameter ChannelManager . 46
5.3.3 Diameter Shim . 46
5.3.3.1 Diameter Shim data . 47
5.3.3.2 Diameter shim behaviour . 47
5.3.3.3 Generating PUR messages . 49
5.3.4 Diameter Listener . 50
5.3.4.1 Diameter session initiation . 51
5.3.4.2 Diameter session termination . 52
5.3.4.3 Gocap commands . 52
5.3.5 Diameter Session Handler . 52
5.3.6 GOCAP Timers . 54
5.4 Diameter MSC charts . 54
5.4.1 Simple Diameter session . 54
6 GOCAP over SIP . 56
6.1 General . 56
6.2 Overview . 57
6.2.1 GOCAP Slave . 57
6.2.1.1 Subscription . 57
6.2.1.2 Receiving Notifications . 57
6.2.2 GOCAP Master . 58
6.2.2.1 Subscription . 58
6.2.2.2 Notification . 58
6.3 Detailed procedures . 59
6.3.1 Introduction. 59
6.3.2 GOCAP Master . 59
6.3.2.1 SIP ChannelManager . 59
6.3.2.2 SIP Shim . 60
6.3.2.2.1 SIP Shim data . 60
6.3.2.2.2 SIP shim behaviour . 60
6.3.2.2.3 Generating NOTIFY messages . 62
6.3.3 GOCAP slave. 63
6.3.3.1 SIP Listener . 63
6.3.3.1.1 SIP Session initiation . 64
6.3.3.1.2 Session termination . 65
6.3.3.1.3 Gocap commands . 65
6.3.3.2 SIP Session Handler . 65
Annex A (normative): ASN.1 data types and signal definitions . 67
A.1 ASN.1 definitions . 67
A.2 Signals . 69
A.3 SDL description . 70
Annex B (normative): Congestion_Control event package . 71
B.1 Event Package Name . 71
ETSI
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5 ETSI ES 283 039-2 V3.1.1 (2010-01)
B.2 Event Package Parameters . 71
B.3 SUBSCRIBE Bodies . 71
B.4 Subscription Duration. 71
B.5 NOTIFY Bodies . 71
B.6 Notifier Processing of SUBSCRIBE Requests. 71
B.7 Notifier Generation of NOTIFY Requests . . 71
B.8 Subscriber Processing of NOTIFY Requests . 72
B.9 Subscriber Generation of SUBSCRIBE Requests . 72
B.10 Handling of Forked Requests . 72
B.11 Rate of Notifications . 72
B.12 State Agents . 72
B.13 Use of URIs to Retrieve State . 72
Annex C (normative): XML Schema . . 73
C.1 Introduction . 73
C.2 XML Schema specification . 73
Annex D (informative): Generating System_state data . 77
D.1 Introduction . 77
D.2 Background . 77
D.3 Modelling CPU load . 78
D.4 Single processing system. 79
D.4.1 Arrival rate and Goal rate . 79
D.4.2 Scheduling the update . 80
D.4.3 Updating the arrival rate . 80
D.4.4 Updating the goal rate . 80
D.4.5 Variables. 82
D.4.6 Initialisation . 82
D.4.7 Configurable Parameters . 83
D.5 Multiple processing subsystems . 83
D.5.1 Scheduling the update . 85
D.5.2 Updating the arrival rate . 85
D.5.3 Updating the goal rate . 85
D.5.4 Special design considerations . 86
D.5.4.1 AS unavailability . 86
D.5.4.2 Late or missing updates . 86
Annex E (informative): Message Sequence Charts (Transport Independent) . 87
E.1 Adding sources . 87
E.1.1 Overview . 87
E.1.2 Data flows for addition of a source . 89
E.2 Deleting sources . 91
E.3 Overload onset and abatement . 92
E.3.1 Overview of overload onset and abatement . 92
E.3.2 Detailed view of data flows in overload . 94
E.4 Audit . 95
E.5 Switching to local restriction . 96
ETSI
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6 ETSI ES 283 039-2 V3.1.1 (2010-01)
Annex F (informative): Adaptation behaviour discussion. 99
F.1 Adaptation algorithm behaviour . 99
F.2 Adaptation and control termination . 102
F.3 Capacity Modification Factor . 103
Annex G (informative): Bibliography . 104
History . 105
ETSI
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7 ETSI ES 283 039-2 V3.1.1 (2010-01)
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 ETSI Standard (ES) has been produced by ETSI Technical Committee Telecommunications and Internet
converged Services and Protocols for Advanced Networking (TISPAN).
The present document is part 2 of a multi-part deliverable covering NGN Overload and Congestion Control as identified
below:
Part 1: "Overview";
Part 2: "Core GOCAP and NOCA Entity Behaviours";
Part 3: "Overload and Congestion Control for H.248 MG/MGC";
Part 4: "Adaptative Control for the MGC";
Part 5: "ISDN overload control at the Access Gateway".
ETSI
---------------------- Page: 7 ----------------------
8 ETSI ES 283 039-2 V3.1.1 (2010-01)
1 Scope
The present document describes the core features of the NGN Overload Control Architecture (NOCA) and the Generic
Overload Control Application Protocol (GOCAP). While it is usual for the architectural components to be specified
separately from the protocols that are used to communicate between them, the performance requirements of overload
controls are such that the coupling between architecture, protocol and implementation is very strong. This means that
the present document specifies the architecture, entity behaviours and protocol for the core NOCA/GOCAP together.
The way GOCAP and the NOCA entities are dep
...
Final draft ETSI ES 283 039-2 V3.1.0 (2009-11)
ETSI Standard
Telecommunications and Internet converged Services and
Protocols for Advanced Networking (TISPAN);
NGN Congestion and Overload Control;
Part 2: Core GOCAP and NOCA Entity Behaviours
�
---------------------- Page: 1 ----------------------
2 Final draft ETSI ES 283 039-2 V3.1.0 (2009-11)
Reference
DES/TISPAN-03034-2-NGN-R3
Keywords
control, quality, protocol
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88
Important notice
Individual copies of the present document can be downloaded from:
http://www.etsi.org
The present document may be made available in more than one electronic version or in print. In any case of existing or
perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF).
In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive
within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
http://portal.etsi.org/tb/status/status.asp
If you find errors in the present document, please send your comment to one of the following services:
http://portal.etsi.org/chaircor/ETSI_support.asp
Copyright Notification
No part may be reproduced except as authorized by written permission.
The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 2009.
All rights reserved.
TM TM TM TM
DECT , PLUGTESTS , UMTS , TIPHON , the TIPHON logo and the ETSI logo are Trade Marks of ETSI registered
for the benefit of its Members.
TM
3GPP is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners.
LTE™ is a Trade Mark of ETSI currently being registered
for the benefit of its Members and of the 3GPP Organizational Partners.
GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association.
ETSI
---------------------- Page: 2 ----------------------
3 Final draft ETSI ES 283 039-2 V3.1.0 (2009-11)
Contents
Intellectual Property Rights . 7
Foreword . 7
1 Scope . 8
2 References . 8
2.1 Normative references . 8
2.2 Informative references . 9
3 Definitions and abbreviations . 9
3.1 Definitions . 9
3.2 Abbreviations . 9
4 Control Architecture . 10
4.1 Description of NOCA Components . 10
4.2 Detailed Description of NOCA Components and Behaviour . 12
4.2.1 Overview . 12
4.2.2 Control Adaptor (CAProcess) . 14
4.2.2.1 Control Adaptor Data . 14
4.2.2.2 CAProcess signals . 15
4.2.2.3 Control Adaptor Behaviour . 15
4.2.2.4 Generating Control Adaptor Input . 19
4.2.3 Control Distribution (SDL: CDProcess) . 19
4.2.3.1 Control Distribution data . 19
4.2.3.2 Control Distribution Signals . 20
4.2.3.3 Control Distribution Behaviour . 20
4.2.4 CDRestriction . 23
4.2.4.1 CDRestriction Data . 24
4.2.4.2 CDRestrictor Signals . 24
4.2.4.3 CDRestrictor Behaviour . 25
4.2.5 Restrictor Manager (RMProcess) . 28
4.2.5.1 Restrictor Manager Data . 28
4.2.5.2 Restrictor Manager Signals . 29
4.2.5.3 Restrictor Manager Behaviour . 30
4.2.6 Restrictor . 33
4.2.6.1 Restrictor data . 33
4.2.6.2 Restrictor signals . 34
4.2.6.3 Restrictor behaviour . 34
4.2.7 GOCAP Transport . 35
4.2.7.1 The structure of the GOCAP transport layer. . 35
4.2.7.2 Channel Manager . 37
4.2.7.2.1 Channel Manager Data . 37
4.2.7.2.2 Channel Manager Signals . 37
4.2.7.2.3 Channel Manager Behaviour . 38
4.2.7.3 Shim Process . 39
4.2.7.3.1 Shim Process Signals . 39
4.2.7.3.2 Shim Process Behaviour . 39
4.2.7.4 GocapListener . 40
4.2.7.5 SessionHandler . 40
5 GOCAP over Diameter . 40
5.1 Introduction . 40
5.2 Use of the Diameter base protocol . 41
5.2.1 Advertising GOCAP support . 41
5.2.2 Securing Diameter messages . 41
5.2.3 Accounting functionality . 41
5.2.4 GOCAP commands. 41
5.2.4.1 AA-Request (AAR) command . 41
ETSI
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4 Final draft ETSI ES 283 039-2 V3.1.0 (2009-11)
5.2.4.2 AA-Answer (AAA) Command . 42
5.2.4.3 Profile-Update-Request (PUR) command . 42
5.2.4.4 Profile-Update-Answer (PUA) command . 42
5.2.4.5 Session-Termination-Request (STR) command . 43
5.2.4.6 Session-Termination-Answer (STA) command . 43
5.2.4.7 Abort-Session-Request (ASR) command . 43
5.2.4.8 Abort-Session-Answer (ASA) command . 43
5.2.5 AVP definitions . 44
5.2.5.1 Auth_Scope . 44
5.2.5.2 AVP GOCAP-Body . 44
5.2.6 Restrictions on AVP values . 44
5.2.6.1 Auth-Request-Type . 44
5.2.6.2 Auth-Session-State AVP . 45
5.3 Procedures to be used with Diameter messages . 45
5.3.1 Introduction. 45
5.3.2 Diameter ChannelManager . 45
5.3.3 Diameter Shim . 46
5.3.3.1 Diameter Shim data . 46
5.3.3.2 Diameter shim behaviour . 46
5.3.3.3 Generating PUR messages . 49
5.3.4 Diameter Listener . 50
5.3.4.1 Diameter session initiation . 50
5.3.4.2 Diameter session termination . 51
5.3.4.3 Gocap commands . 51
5.3.5 Diameter Session Handler . 52
5.3.6 GOCAP Timers . 52
5.4 Diameter MSC charts . 53
5.4.1 Simple Diameter session . 53
6 GOCAP over SIP . 56
6.1 General . 56
6.2 Overview . 56
6.2.1 GOCAP Slave . 56
6.2.1.1 Subscription . 56
6.2.1.2 Receiving Notifications . 57
6.2.2 GOCAP Master . 57
6.2.2.1 Subscription . 57
6.2.2.2 Notification . 58
6.3 Detailed procedures . 58
6.3.1 Introduction. 58
6.3.2 GOCAP Master . 59
6.3.2.1 SIP ChannelManager . 59
6.3.2.2 SIP Shim . 60
6.3.2.2.1 SIP Shim data . 60
6.3.2.2.2 SIP shim behaviour . 60
6.3.2.2.3 Generating NOTIFY messages . 62
6.3.3 GOCAP slave. 63
6.3.3.1 SIP Listener . 63
6.3.3.1.1 SIP Session initiation . 64
6.3.3.1.2 Session termination . 65
6.3.3.1.3 Gocap commands . 65
6.3.3.2 SIP Session Handler . 65
Annex A (normative): ASN.1 data types and signal definitions . 67
A.1 ASN.1 definitions . 67
A.2 Signals . . 69
A.3 SDL description . 70
Annex B (normative): Congestion_Control event package . 71
B.1 Event Package Name . 71
ETSI
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5 Final draft ETSI ES 283 039-2 V3.1.0 (2009-11)
B.2 Event Package Parameters . 71
B.3 SUBSCRIBE Bodies . 71
B.4 Subscription Duration. 71
B.5 NOTIFY Bodies . 71
B.6 Notifier Processing of SUBSCRIBE Requests. 71
B.7 Notifier Generation of NOTIFY Requests . . 71
B.8 Subscriber Processing of NOTIFY Requests . 72
B.9 Subscriber Generation of SUBSCRIBE Requests . 72
B.10 Handling of Forked Requests . 72
B.11 Rate of Notifications . 72
B.12 State Agents . 72
B.13 Use of URIs to Retrieve State . 72
Annex C (normative): XML Schema . . 73
C.1 Introduction . 73
C.2 XML Schema specification . 73
Annex D (informative): Generating System_state data . 77
D.1 Introduction . 77
D.2 Background . 77
D.3 Modelling CPU load . 78
D.4 Single processing system. 79
D.4.1 Arrival rate and Goal rate . 79
D.4.2 Scheduling the update . 80
D.4.3 Updating the arrival rate . 80
D.4.4 Updating the goal rate . 80
D.4.5 Variables. 82
D.4.6 Initialisation . 82
D.4.7 Configurable Parameters . 83
D.5 Multiple processing subsystems . 83
D.5.1 Scheduling the update . 85
D.5.2 Updating the arrival rate . 85
D.5.3 Updating the goal rate . 85
D.5.4 Special design considerations . 86
D.5.4.1 AS unavailability . 86
D.5.4.2 Late or missing updates . 86
Annex E (informative): Message Sequence Charts (Transport Independent) . 87
E.1 Adding sources . 87
E.1.1 Overview . 87
E.1.2 Data flows for addition of a source . 89
E.2 Deleting sources . 91
E.3 Overload onset and abatement . 92
E.3.1 Overview of overload onset and abatement . 92
E.3.2 Detailed view of data flows in overload . 94
E.4 Audit . 95
E.5 Switching to local restriction . 96
ETSI
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6 Final draft ETSI ES 283 039-2 V3.1.0 (2009-11)
Annex F (informative): Adaptation behaviour discussion. 99
F.1 Adaptation algorithm behaviour . 99
F.2 Adaptation and control termination . 102
F.3 Capacity Modification Factor . 103
Annex G (informative): Bibliography . 104
History . 105
ETSI
---------------------- Page: 6 ----------------------
7 Final draft ETSI ES 283 039-2 V3.1.0 (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 ETSI Standard (ES) has been produced by ETSI Technical Committee Telecommunications and Internet
converged Services and Protocols for Advanced Networking (TISPAN), and is now submitted for the ETSI standards
Membership Approval Procedure.
The present document is part 2 of a multi-part deliverable covering NGN Overload and Congestion Control as identified
below:
Part 1: "Overview";
Part 2: "Core GOCAP and NOCA Entity Behaviours";
Part 3: "Overload and Congestion Control for H.248 MG/MGC";
Part 4: "Adaptative Control for the MGC";
Part 5: "ISDN overload control at the Access Gateway".
ETSI
---------------------- Page: 7 ----------------------
8 Final draft ETSI ES 283 039-2 V3.1.0 (2009-11)
1 Scope
The present document describes the core features of the NGN Overload Control Architecture (NOCA) and the Generic
Overload Control Application Protocol (GOCAP). While it is usual for the architectural components to be specified
separately from the protocols that are used to communicate between them, the performance requirements of overload
controls are such that the coupling between architecture, protocol and implementation is very st
...
Questions, Comments and Discussion
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