Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN) - Resource and Admission Control Sub-System (RACS) - Functional Architecture

Describe the functional architecture of the Resource and Admission Control Subsystem (RACS) for NGN R2. The goal is to deal with: �Completion of RACS R1 open issues. �      Enhancements of RACS capabilities for R2.The present document describes the functional architecture for the Resource and Admission Control Sub-System (RACS), in TISPAN NGN Release 2, in line with the service requirements described in TS 181 005 [1] and with the QoS Requirements described in TS 181 018 [13]. Moreover, it further indicates high level stage 2 requirements in order to allow the description of its functional operation.
The functional architecture and system description developed in the present document is based on the Release 2 requirements for RACS developed in ES 282 001 [2].
RACS is the TISPAN NGN Sub-System responsible for the implementation of policy-based transport control features, by using procedures and mechanisms that handle resource reservation and admission control for both unicast and multicast traffic in access and core networks.
Besides acting as a Resource Control Framework, RACS also includes support for controlling Network Address Translation (NAT) at the edge of networks and for assisting in remote NAT traversal.
Furthermore, RACS also covers aspects related to the derivation, modification, and installation of traffic policies, end to end quality of service, transport-level charging and overload control.
Hereinafter, the restrictions applicable to some RACS NGN topics for the present document are listed:
• the CPN requirements impact will not be handled;
• only single access and single core domains will be handled;
• the interconnection between domains through the Ri' interdomain reference point is limited to scenarios involving only wholesale and roaming between two domains;
• the e2e QoS handling is limited to scenarios involving only wholesale and roaming between two domains;
• other QoS handling aspects, e.g. QoS monitoring and QoS reporting, are covered only in an informative annex;
• the Metro topic aspects are covered in informative annex D; and
• the multicast topic is limited to scenarios involving only a single domain.

Zlite telekomunikacijske in internetne storitve ter protokoli za napredno omreženje (TISPAN) - Podsistem za krmiljenje vira in pristopa (RACS) - Funkcijska arhitektura

General Information

Status
Published
Publication Date
15-Jul-2008
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
19-Jun-2008
Due Date
24-Aug-2008
Completion Date
16-Jul-2008

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ETSI ES 282 003 V2.0.0 (2008-05) - Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); Resource and Admission Control Sub-System (RACS): Functional Architecture
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ETSI ES 282 003 V2.0.0 (2008-05)
ETSI Standard
Telecommunications and Internet converged Services and
Protocols for Advanced Networking (TISPAN);
Resource and Admission Control Sub-System (RACS):
Functional Architecture
---------------------- Page: 1 ----------------------
2 ETSI ES 282 003 V2.0.0 (2008-05)
Reference
RES/TISPAN-02036-NGN-R2
Keywords
architecture, control, system
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 2008.
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.

3GPP is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners.

ETSI
---------------------- Page: 2 ----------------------
3 ETSI ES 282 003 V2.0.0 (2008-05)
Contents

Intellectual Property Rights................................................................................................................................9

Foreword.............................................................................................................................................................9

1 Scope......................................................................................................................................................10

2 References..............................................................................................................................................10

2.1 Normative references.......................................................................................................................................11

2.2 Informative references......................................................................................................................................11

3 Definitions and abbreviations.................................................................................................................12

3.1 Definitions........................................................................................................................................................12

3.2 Abbreviations...................................................................................................................................................13

4 General description of RACS.................................................................................................................15

4.1 High Level functional overview.......................................................................................................................15

4.2 Functional Requirements..................................................................................................................................16

4.2.1 R1 Requirements........................................................................................................................................16

4.2.1.1 Overall...................................................................................................................................................16

4.2.1.2 Transport Control Service Requests......................................................................................................16

4.2.1.3 Resource Handling................................................................................................................................17

4.2.1.4 QoS Management..................................................................................................................................18

4.2.1.5 Traffic Handling....................................................................................................................................18

4.2.1.6 Charging and Overload Control ............................................................................................................18

4.2.2 R2 Requirements........................................................................................................................................18

4.2.2.1 Overall...................................................................................................................................................18

4.2.2.2 Resource Handling................................................................................................................................19

4.2.2.3 QoS Management..................................................................................................................................19

4.2.2.4 e2e QoS Handling .................................................................................................................................19

4.2.2.5 Multicast/Unicast Handling ..................................................................................................................19

4.2.2.6 Topology and Resource Information Retrieval .....................................................................................20

4.2.2.7 Network Deployment Scenarios............................................................................................................20

4.2.2.8 Charging and Overload Control ............................................................................................................20

5 RACS functional architecture derivation basis ......................................................................................20

5.1 Resource Control for Unicast and Multicast ....................................................................................................20

5.1.1 Resource control scenarios .........................................................................................................................21

5.1.1.1 Identification of Resources...................................................................................................................21

5.1.1.2 Multicast Resource Admission Decision Specifics...............................................................................21

5.1.1.3 Resource Admission Decision Prerequisites.........................................................................................22

5.1.1.4 Resource Admission Control Approaches ............................................................................................22

5.1.1.5 Multicast Resource Admission Control in the Access Network Domain Transport Nodes ..................22

5.2 Charging...........................................................................................................................................................23

5.3 QoS Management Functions in Fixed Access Networks..................................................................................23

5.4 Resource Control for Service Quality Downgrading........................................................................................25

6 RACS functional architecture definition................................................................................................26

6.1 General.............................................................................................................................................................26

6.2 Functional elements..........................................................................................................................................28

6.2.1 SPDF...........................................................................................................................................................28

6.2.1.1 SPDF main functions............................................................................................................................28

6.2.1.2 Summary of SPDF Elementary Functions ............................................................................................28

6.2.1.3 Reference points....................................................................................................................................29

6.2.1.4 User profile...........................................................................................................................................30

6.2.1.5 Priority..................................................................................................................................................30

6.2.1.6 Service request......................................................................................................................................30

6.2.1.7 Coordination function...........................................................................................................................31

6.2.1.8 Charging................................................................................................................................................31

6.2.1.9 Deployment considerations...................................................................................................................31

6.2.1.10 Overload control ...................................................................................................................................32

ETSI
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4 ETSI ES 282 003 V2.0.0 (2008-05)

6.2.1.11 Discovery mechanism...........................................................................................................................32

6.2.2 Generic Resource Admission Control Function .........................................................................................32

6.2.2.1 Main functions......................................................................................................................................32

6.2.2.1.1 Specializations of x-RACF..............................................................................................................33

6.2.2.1.2 Reference points applicable to different specializations of x-RACF...............................................33

6.2.2.1.3 Multiple instantiations of x-RACF ..................................................................................................33

6.2.2.2 Summary of generic Resource Admission Control Function Elementary Functions............................34

6.2.2.3 A-RACF................................................................................................................................................36

6.2.2.3.1 A-RACF main functions..................................................................................................................36

6.2.2.3.2 Reference points..............................................................................................................................36

6.2.2.4 C-RACF................................................................................................................................................36

6.2.2.4.1 C-RACF main functions..................................................................................................................36

6.2.2.5 Admission control process ....................................................................................................................36

6.2.2.5.1 A-RACF ..........................................................................................................................................36

6.2.2.5.2 C-RACF...........................................................................................................................................38

6.2.2.6 Installation of policies ...........................................................................................................................38

6.2.2.7 Charging................................................................................................................................................38

6.2.2.8 Abnormal condition handling................................................................................................................39

6.2.2.9 Deployment considerations...................................................................................................................39

6.2.2.10 Overload control ...................................................................................................................................39

6.2.2.11 Discovery Mechanism...........................................................................................................................39

6.2.3 BGF............................................................................................................................................................39

6.2.3.1 BGF main functions..............................................................................................................................39

6.2.3.2 BGF parameters....................................................................................................................................40

6.2.3.3 Reference points....................................................................................................................................40

6.2.3.4 Addressing latching...............................................................................................................................40

6.2.3.5 Abnormal conditions handling ..............................................................................................................40

6.2.3.6 Overload control...................................................................................................................................40

6.2.4 RCEF..........................................................................................................................................................40

6.2.4.1 RCEF main functions............................................................................................................................40

6.2.4.2 Reference points....................................................................................................................................41

6.2.4.3 RCEF parameters..................................................................................................................................41

6.2.5 Application Function (AF)..........................................................................................................................41

6.2.5.1 AF main functions.................................................................................................................................41

6.2.5.2 Reference points....................................................................................................................................42

6.2.5.3 Charging................................................................................................................................................42

6.2.5.4 Abnormal conditions handling ..............................................................................................................42

6.3 RACS reference points.....................................................................................................................................42

6.3.1 Rq reference point (SPDF - A-RACF)........................................................................................................42

6.3.1.1 Functional requirements........................................................................................................................42

6.3.1.1.1 Resource management mechanisms ................................................................................................43

6.3.1.1.2 Service model..................................................................................................................................43

6.3.1.1.3 Duration semantics..........................................................................................................................44

6.3.1.1.4 Audit and synchronization support..................................................................................................44

6.3.1.1.5 Report facilities for unsolicited events ............................................................................................44

6.3.1.2 Non-functional requirements.................................................................................................................44

6.3.1.2.1 Reliability requirements..................................................................................................................44

6.3.1.2.2 Security requirements......................................................................................................................44

6.3.1.3 Information exchanged over the Rq Reference Point............................................................................45

6.3.1.3.1 Resource Reservation Request........................................................................................................45

6.3.1.3.2 Resource Modification Request.......................................................................................................46

6.3.1.3.3 Resource Request/Modification Confirmation................................................................................47

6.3.1.3.4 Resource Release Request...............................................................................................................47

6.3.1.3.5 Abort Resource Reservation............................................................................................................48

6.3.2 e4 reference point (A-RACF - NASS)........................................................................................................48

6.3.3 Ia Reference Point (SPDF - BGF) ..............................................................................................................48

6.3.3.1 Functional Requirements......................................................................................................................48

6.3.3.1.1 Control of NAT, Hosted NAT traversal and Gating........................................................................48

6.3.3.1.2 Transport Protocol Type Policing....................................................................................................49

6.3.3.1.3 Bandwidth control ...........................................................................................................................49

6.3.3.1.4 QoS marking....................................................................................................................................49

6.3.3.1.5 Usage metering and statistics reporting...........................................................................................49

ETSI
---------------------- Page: 4 ----------------------
5 ETSI ES 282 003 V2.0.0 (2008-05)

6.3.3.1.6 Resource state synchronization .......................................................................................................49

6.3.3.2 Non-Functional Requirements..............................................................................................................49

6.3.3.2.1 Reliability requirements..................................................................................................................49

6.3.3.2.2 Security requirements......................................................................................................................49

6.3.3.3 Information exchanged over the Ia Reference Point .............................................................................49

6.3.4 Gq' Reference Point (AF - SPDF)...............................................................................................................49

6.3.4.1 Functional Requirements......................................................................................................................49

6.3.4.2 Non-Functional Requirements..............................................................................................................50

6.3.4.3 Information exchanged over the Gq' Reference Point...........................................................................50

6.3.5 Ri' Reference Point (SPDF-SPDF inter-domain)........................................................................................50

6.3.5.1 Functional Requirements......................................................................................................................50

6.3.5.1.1 Resource management mechanisms ................................................................................................50

6.3.5.1.2 Service model..................................................................................................................................50

6.3.5.1.3 Duration semantics..........................................................................................................................51

6.3.5.1.4 Audit and Synchronization support .................................................................................................51

6.3.5.1.5 Report facilities for unsolicited events ............................................................................................51

6.3.5.2 Non-Functional Requirements..............................................................................................................51

6.3.5.2.1 Reliability requirements..................................................................................................................51

6.3.5.2.2 Security requirements......................................................................................................................51

6.3.5.3 Information exchanged over the Ri' Reference Point............................................................................51

6.3.6 Rd' Reference Point (SPDF-SPDF intra-domain).......................................................................................51

6.3.7 Re Reference Point (A-RACF - RCEF)......................................................................................................52

6.3.7.1 Functional Requirements......................................................................................................................52

6.3.7.1.1 Policy Enforcement Management....................................................................................................52

6.3.7.2 Non-functional requirements.................................................................................................................53

6.3.7.2.1 Reliability requirements..................................................................................................................53

6.3.7.2.2 Security requirements......................................................................................................................53

6.3.7.3 Information exchanged over the Re Reference Point............................................................................53

6.3.8 Rr Reference Point (x-RACF - x-RACF intra-domain)..............................................................................53

6.3.8.1 Functional Requirements......................................................................................................................53

6.3.8.1.1 Overall features...............................................................................................................................53

6.3.8.1.2 Resource management mechanisms ................................................................................................54

6.3.8.1.3 Service model..................................................................................................................................54

6.3.8.1.4 Duration semantics..........................................................................................................................55

6.3.8.1.5 Audit and Synchronization support .................................................................................................55

6.3.8.1.6 Report facilities for unsolicited events ............................................................................................55

6.3.8.2 Non-Functional Requirements..............................................................................................................55

6.3.8.2.1 Reliability requirements..................................................................................................................55

6.3.8.2.2 Security requirements......................................................................................................................55

6.3.8.3 Information exchanged over the Rr Reference Point ............................................................................56

6.3.8.3.1 Resource Reservation Request........................................................................................................56

6.3.8.3.2 Resource Modification Request.......................................................................................................57

6.3.8.3.3 Resource Request/Modification Confirmation................................................................................58

6.3.8.3.4 Resource Release Request...............................................................................................................59

6.3.8.3.5 Abort Resource Reservation............................................................................................................59

6.3.8.3.6 Resource Allocation Request...........................................................................................................60

6.3.8.3.7 Resource Allocation Confirmation..................................................................................................61

6.4 RACS Flows: Interaction Procedures...............................................................................................................61

6.4.1 Subscriber Attaches to the Access Network ...............................................................................................61

6.4.2 Request Resource........................................................................................................................................62

6.4.2.1 Request Resource by using the push mode ...........................................................................................62

6.4.2.2 Request Resource by using the pull mode.............................................................................................63

6.4.2.2.1 Admission control using pull mode when only one x-RACF is involved in managing the

same resources.................................................................................................................................63

6.4.2.2.2 Admission control using pull mode when multiple x-RACFs are involved in managing the

same resources.................................................................................................................................65

6.4.3 Request Resource Wholesale/Retail Scenario ............................................................................................66

6.4.3.1 Request Resource with access to the A-RACF in the retail domain .....................................................66

6.4.3.2 Request Resource without access to the A-RACF in the retail domain ................................................67

6.4.4 Release Resource........................................................................................................................................69

6.4.4.1 Release Resource Request by using the push mode..............................................................................69

6.4.4.2 Release Resource Request by using the pull mode ...............................................................................70

ETSI
---------------------- Page: 5 ----------------------
6 ETSI ES 282 003 V2.0.0 (2008-05)

6.4.4.2.1 Resource Release using pull mode when only one x-RACF is involved in managing the same

resources..........................................................................................................................................70

6.4.4.2.2 Resource release using pull mode when multiple x-RACFs are involved in managing the

same resources.................................................................................................................................71

6.4.5 Commit Resources procedure.....................................................................................................................72

6.4.6 Resource Modification Request..................................................................................................................73

6.4.6.1 Resource Modification R
...

Final draft ETSI ES 282 003 V2.0.0 (2008-03)
ETSI Standard
Telecommunications and Internet converged Services and
Protocols for Advanced Networking (TISPAN);
Resource and Admission Control Sub-System (RACS):
Functional Architecture
---------------------- Page: 1 ----------------------
2 Final draft ETSI ES 282 003 V2.0.0 (2008-03)
Reference
RES/TISPAN-02036-NGN-R2
Keywords
architecture, control, system
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 2008.
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.

3GPP is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners.

ETSI
---------------------- Page: 2 ----------------------
3 Final draft ETSI ES 282 003 V2.0.0 (2008-03)
Contents

Intellectual Property Rights................................................................................................................................9

Foreword.............................................................................................................................................................9

1 Scope......................................................................................................................................................10

2 References..............................................................................................................................................10

2.1 Normative references.......................................................................................................................................11

2.2 Informative references......................................................................................................................................11

3 Definitions and abbreviations.................................................................................................................12

3.1 Definitions........................................................................................................................................................12

3.2 Abbreviations...................................................................................................................................................13

4 General description of RACS.................................................................................................................15

4.1 High Level functional overview.......................................................................................................................15

4.2 Functional Requirements..................................................................................................................................16

4.2.1 R1 Requirements........................................................................................................................................16

4.2.1.1 Overall...................................................................................................................................................16

4.2.1.2 Transport Control Service Requests......................................................................................................16

4.2.1.3 Resource Handling................................................................................................................................16

4.2.1.4 QoS Management..................................................................................................................................18

4.2.1.5 Traffic Handling....................................................................................................................................18

4.2.1.6 Charging and Overload Control ............................................................................................................18

4.2.2 R2 Requirements........................................................................................................................................18

4.2.2.1 Overall...................................................................................................................................................18

4.2.2.2 Resource Handling................................................................................................................................19

4.2.2.3 QoS Management..................................................................................................................................19

4.2.2.4 e2e QoS Handling .................................................................................................................................19

4.2.2.5 Multicast/Unicast Handling ..................................................................................................................19

4.2.2.6 Topology and Resource Information Retrieval .....................................................................................20

4.2.2.7 Network Deployment Scenarios............................................................................................................20

4.2.2.8 Charging and Overload Control ............................................................................................................20

5 RACS functional architecture derivation basis ......................................................................................20

5.1 Resource Control for Unicast and Multicast ....................................................................................................20

5.1.1 Resource control scenarios .........................................................................................................................21

5.1.1.1 Identification of Resources...................................................................................................................21

5.1.1.2 Multicast Resource Admission Decision Specifics...............................................................................21

5.1.1.3 Resource Admission Decision Prerequisites.........................................................................................22

5.1.1.4 Resource Admission Control Approaches ............................................................................................22

5.1.1.5 Multicast Resource Admission Control in the Access Network Domain Transport Nodes ..................22

5.2 Charging...........................................................................................................................................................23

5.3 QoS Management Functions in Fixed Access Networks..................................................................................23

5.4 Resource Control for Service Quality Downgrading........................................................................................25

6 RACS functional architecture definition................................................................................................26

6.1 General.............................................................................................................................................................26

6.2 Functional elements..........................................................................................................................................28

6.2.1 SPDF...........................................................................................................................................................28

6.2.1.1 SPDF main functions............................................................................................................................28

6.2.1.2 Summary of SPDF Elementary Functions ............................................................................................28

6.2.1.3 Reference points....................................................................................................................................29

6.2.1.4 User profile...........................................................................................................................................30

6.2.1.5 Priority..................................................................................................................................................30

6.2.1.6 Service request......................................................................................................................................30

6.2.1.7 Coordination function...........................................................................................................................31

6.2.1.8 Charging................................................................................................................................................31

6.2.1.9 Deployment considerations...................................................................................................................31

6.2.1.10 Overload control ...................................................................................................................................32

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---------------------- Page: 3 ----------------------
4 Final draft ETSI ES 282 003 V2.0.0 (2008-03)

6.2.1.11 Discovery mechanism...........................................................................................................................32

6.2.2 Generic Resource Admission Control Function .........................................................................................32

6.2.2.1 Main functions......................................................................................................................................32

6.2.2.1.1 Specializations of x-RACF..............................................................................................................33

6.2.2.1.2 Reference points applicable to different specializations of x-RACF...............................................33

6.2.2.1.3 Multiple instantiations of x-RACF ..................................................................................................33

6.2.2.2 Summary of generic Resource Admission Control Function Elementary Functions............................34

6.2.2.3 A-RACF................................................................................................................................................36

6.2.2.3.1 A-RACF main functions..................................................................................................................36

6.2.2.3.2 Reference points..............................................................................................................................36

6.2.2.4 C-RACF................................................................................................................................................36

6.2.2.4.1 C-RACF main functions..................................................................................................................36

6.2.2.5 Admission control process ....................................................................................................................36

6.2.2.5.1 A-RACF ..........................................................................................................................................36

6.2.2.5.2 C-RACF...........................................................................................................................................38

6.2.2.6 Installation of policies ...........................................................................................................................38

6.2.2.7 Charging................................................................................................................................................38

6.2.2.8 Abnormal condition handling................................................................................................................39

6.2.2.9 Deployment considerations...................................................................................................................39

6.2.2.10 Overload control ...................................................................................................................................39

6.2.2.11 Discovery Mechanism...........................................................................................................................39

6.2.3 BGF............................................................................................................................................................39

6.2.3.1 BGF main functions..............................................................................................................................39

6.2.3.2 BGF parameters....................................................................................................................................40

6.2.3.3 Reference points....................................................................................................................................40

6.2.3.4 Addressing latching...............................................................................................................................40

6.2.3.5 Abnormal conditions handling..............................................................................................................40

6.2.3.6 Overload control...................................................................................................................................40

6.2.4 RCEF..........................................................................................................................................................40

6.2.4.1 RCEF main functions............................................................................................................................40

6.2.4.2 Reference points....................................................................................................................................41

6.2.4.3 RCEF parameters..................................................................................................................................41

6.2.5 Application Function (AF)..........................................................................................................................41

6.2.5.1 AF main functions.................................................................................................................................41

6.2.5.2 Reference points....................................................................................................................................42

6.2.5.3 Charging................................................................................................................................................42

6.2.5.4 Abnormal conditions handling..............................................................................................................42

6.3 RACS reference points.....................................................................................................................................42

6.3.1 Rq reference point (SPDF - A-RACF)........................................................................................................42

6.3.1.1 Functional requirements........................................................................................................................42

6.3.1.1.1 Resource management mechanisms ................................................................................................43

6.3.1.1.2 Service model..................................................................................................................................43

6.3.1.1.3 Duration semantics..........................................................................................................................44

6.3.1.1.4 Audit and synchronization support..................................................................................................44

6.3.1.1.5 Report facilities for unsolicited events ............................................................................................44

6.3.1.2 Non-functional requirements.................................................................................................................44

6.3.1.2.1 Reliability requirements..................................................................................................................44

6.3.1.2.2 Security requirements......................................................................................................................44

6.3.1.3 Information exchanged over the Rq Reference Point............................................................................45

6.3.1.3.1 Resource Reservation Request........................................................................................................45

6.3.1.3.2 Resource Modification Request.......................................................................................................46

6.3.1.3.3 Resource Request/Modification Confirmation................................................................................47

6.3.1.3.4 Resource Release Request...............................................................................................................47

6.3.1.3.5 Abort Resource Reservation............................................................................................................48

6.3.2 e4 reference point (A-RACF - NASS)........................................................................................................48

6.3.3 Ia Reference Point (SPDF - BGF) ..............................................................................................................48

6.3.3.1 Functional Requirements......................................................................................................................48

6.3.3.1.1 Control of NAT, Hosted NAT traversal and Gating........................................................................48

6.3.3.1.2 Transport Protocol Type Policing....................................................................................................49

6.3.3.1.3 Bandwidth control ...........................................................................................................................49

6.3.3.1.4 QoS marking....................................................................................................................................49

6.3.3.1.5 Usage metering and statistics reporting...........................................................................................49

ETSI
---------------------- Page: 4 ----------------------
5 Final draft ETSI ES 282 003 V2.0.0 (2008-03)

6.3.3.1.6 Resource state synchronization .......................................................................................................49

6.3.3.2 Non-Functional Requirements..............................................................................................................49

6.3.3.2.1 Reliability requirements..................................................................................................................49

6.3.3.2.2 Security requirements......................................................................................................................49

6.3.3.3 Information exchanged over the Ia Reference Point .............................................................................49

6.3.4 Gq' Reference Point (AF - SPDF)...............................................................................................................49

6.3.4.1 Functional Requirements......................................................................................................................49

6.3.4.2 Non-Functional Requirements..............................................................................................................50

6.3.4.3 Information exchanged over the Gq' Reference Point...........................................................................50

6.3.5 Ri' Reference Point (SPDF-SPDF inter-domain)........................................................................................50

6.3.5.1 Functional Requirements......................................................................................................................50

6.3.5.1.1 Resource management mechanisms ................................................................................................50

6.3.5.1.2 Service model..................................................................................................................................50

6.3.5.1.3 Duration semantics..........................................................................................................................51

6.3.5.1.4 Audit and Synchronization support .................................................................................................51

6.3.5.1.5 Report facilities for unsolicited events ............................................................................................51

6.3.5.2 Non-Functional Requirements..............................................................................................................51

6.3.5.2.1 Reliability requirements..................................................................................................................51

6.3.5.2.2 Security requirements......................................................................................................................51

6.3.5.3 Information exchanged over the Ri' Reference Point............................................................................51

6.3.6 Rd' Reference Point (SPDF-SPDF intra-domain).......................................................................................51

6.3.7 Re Reference Point (A-RACF - RCEF)......................................................................................................52

6.3.7.1 Functional Requirements......................................................................................................................52

6.3.7.1.1 Policy Enforcement Management....................................................................................................52

6.3.7.2 Non-functional requirements.................................................................................................................53

6.3.7.2.1 Reliability requirements..................................................................................................................53

6.3.7.2.2 Security requirements......................................................................................................................53

6.3.7.3 Information exchanged over the Re Reference Point............................................................................53

6.3.8 Rr Reference Point (x-RACF - x-RACF intra-domain)..............................................................................53

6.3.8.1 Functional Requirements......................................................................................................................53

6.3.8.1.1 Overall features...............................................................................................................................53

6.3.8.1.2 Resource management mechanisms ................................................................................................54

6.3.8.1.3 Service model..................................................................................................................................54

6.3.8.1.4 Duration semantics..........................................................................................................................55

6.3.8.1.5 Audit and Synchronization support .................................................................................................55

6.3.8.1.6 Report facilities for unsolicited events ............................................................................................55

6.3.8.2 Non-Functional Requirements..............................................................................................................55

6.3.8.2.1 Reliability requirements..................................................................................................................55

6.3.8.2.2 Security requirements......................................................................................................................55

6.3.8.3 Information exchanged over the Rr Reference Point ............................................................................56

6.3.8.3.1 Resource Reservation Request........................................................................................................56

6.3.8.3.2 Resource Modification Request.......................................................................................................57

6.3.8.3.3 Resource Request/Modification Confirmation................................................................................58

6.3.8.3.4 Resource Release Request...............................................................................................................59

6.3.8.3.5 Abort Resource Reservation............................................................................................................59

6.3.8.3.6 Resource Allocation Request...........................................................................................................59

6.3.8.3.7 Resource Allocation Confirmation..................................................................................................61

6.4 RACS Flows: Interaction Procedures...............................................................................................................61

6.4.1 Subscriber Attaches to the Access Network ...............................................................................................61

6.4.2 Request Resource........................................................................................................................................62

6.4.2.1 Request Resource by using the push mode ...........................................................................................62

6.4.2.2 Request Resource by using the pull mode.............................................................................................63

6.4.2.2.1 Admission control using pull mode when only one x-RACF is involved in managing the

same resources.................................................................................................................................63

6.4.2.2.2 Admission control using pull mode when multiple x-RACFs are involved in managing the

same resources.................................................................................................................................65

6.4.3 Request Resource Wholesale/Retail Scenario ............................................................................................66

6.4.3.1 Request Resource with access to the A-RACF in the retail domain .....................................................66

6.4.3.2 Request Resource without access to the A-RACF in the retail domain ................................................67

6.4.4 Release Resource........................................................................................................................................69

6.4.4.1 Release Resource Request by using the push mode..............................................................................69

6.4.4.2 Release Resource Request by using the pull mode ...............................................................................70

ETSI
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6 Final draft ETSI ES 282 003 V2.0.0 (2008-03)

6.4.4.2.1 Resource Release using pull mode when only one x-RACF is involved in managing the same

resources..........................................................................................................................................70

6.4.4.2.2 Resource release using pull mode when multiple x-RACFs are involved in managing the

same resources.................................................................................................................................71

6.4.5 Commit Resources procedure.....................................................................................................................72

6.4.6 Resource Modification Request...............................................................................

...

SLOVENSKI STANDARD
SIST ES 282 003 V2.0.0:2008
01-september-2008

Zlite telekomunikacijske in internetne storitve ter protokoli za napredno omreženje

(TISPAN) - Podsistem za krmiljenje vira in pristopa (RACS) - Funkcijska arhitektura

Telecommunications and Internet converged Services and Protocols for Advanced
Networking (TISPAN) - Resource and Admission Control Sub-System (RACS) -
Functional Architecture
Ta slovenski standard je istoveten z: ES 282 003 Version 2.0.0
ICS:
33.040.01 Telekomunikacijski sistemi Telecommunication systems
na splošno in general
33.080 Digitalno omrežje z Integrated Services Digital
integriranimi storitvami Network (ISDN)
(ISDN)
SIST ES 282 003 V2.0.0:2008 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST ES 282 003 V2.0.0:2008
---------------------- Page: 2 ----------------------
SIST ES 282 003 V2.0.0:2008
ETSI ES 282 003 V2.0.0 (2008-05)
ETSI Standard
Telecommunications and Internet converged Services and
Protocols for Advanced Networking (TISPAN);
Resource and Admission Control Sub-System (RACS):
Functional Architecture
---------------------- Page: 3 ----------------------
SIST ES 282 003 V2.0.0:2008
2 ETSI ES 282 003 V2.0.0 (2008-05)
Reference
RES/TISPAN-02036-NGN-R2
Keywords
architecture, control, system
ETSI
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© European Telecommunications Standards Institute 2008.
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ETSI
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SIST ES 282 003 V2.0.0:2008
3 ETSI ES 282 003 V2.0.0 (2008-05)
Contents

Intellectual Property Rights................................................................................................................................9

Foreword.............................................................................................................................................................9

1 Scope......................................................................................................................................................10

2 References..............................................................................................................................................10

2.1 Normative references.......................................................................................................................................11

2.2 Informative references......................................................................................................................................11

3 Definitions and abbreviations.................................................................................................................12

3.1 Definitions........................................................................................................................................................12

3.2 Abbreviations...................................................................................................................................................13

4 General description of RACS.................................................................................................................15

4.1 High Level functional overview.......................................................................................................................15

4.2 Functional Requirements..................................................................................................................................16

4.2.1 R1 Requirements........................................................................................................................................16

4.2.1.1 Overall...................................................................................................................................................16

4.2.1.2 Transport Control Service Requests......................................................................................................16

4.2.1.3 Resource Handling................................................................................................................................17

4.2.1.4 QoS Management..................................................................................................................................18

4.2.1.5 Traffic Handling....................................................................................................................................18

4.2.1.6 Charging and Overload Control ............................................................................................................18

4.2.2 R2 Requirements........................................................................................................................................18

4.2.2.1 Overall...................................................................................................................................................18

4.2.2.2 Resource Handling................................................................................................................................19

4.2.2.3 QoS Management..................................................................................................................................19

4.2.2.4 e2e QoS Handling .................................................................................................................................19

4.2.2.5 Multicast/Unicast Handling ..................................................................................................................19

4.2.2.6 Topology and Resource Information Retrieval .....................................................................................20

4.2.2.7 Network Deployment Scenarios............................................................................................................20

4.2.2.8 Charging and Overload Control ............................................................................................................20

5 RACS functional architecture derivation basis ......................................................................................20

5.1 Resource Control for Unicast and Multicast ....................................................................................................20

5.1.1 Resource control scenarios .........................................................................................................................21

5.1.1.1 Identification of Resources...................................................................................................................21

5.1.1.2 Multicast Resource Admission Decision Specifics...............................................................................21

5.1.1.3 Resource Admission Decision Prerequisites.........................................................................................22

5.1.1.4 Resource Admission Control Approaches ............................................................................................22

5.1.1.5 Multicast Resource Admission Control in the Access Network Domain Transport Nodes ..................22

5.2 Charging...........................................................................................................................................................23

5.3 QoS Management Functions in Fixed Access Networks..................................................................................23

5.4 Resource Control for Service Quality Downgrading........................................................................................25

6 RACS functional architecture definition................................................................................................26

6.1 General.............................................................................................................................................................26

6.2 Functional elements..........................................................................................................................................28

6.2.1 SPDF...........................................................................................................................................................28

6.2.1.1 SPDF main functions............................................................................................................................28

6.2.1.2 Summary of SPDF Elementary Functions ............................................................................................28

6.2.1.3 Reference points....................................................................................................................................29

6.2.1.4 User profile...........................................................................................................................................30

6.2.1.5 Priority..................................................................................................................................................30

6.2.1.6 Service request......................................................................................................................................30

6.2.1.7 Coordination function...........................................................................................................................31

6.2.1.8 Charging................................................................................................................................................31

6.2.1.9 Deployment considerations...................................................................................................................31

6.2.1.10 Overload control ...................................................................................................................................32

ETSI
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SIST ES 282 003 V2.0.0:2008
4 ETSI ES 282 003 V2.0.0 (2008-05)

6.2.1.11 Discovery mechanism...........................................................................................................................32

6.2.2 Generic Resource Admission Control Function .........................................................................................32

6.2.2.1 Main functions......................................................................................................................................32

6.2.2.1.1 Specializations of x-RACF..............................................................................................................33

6.2.2.1.2 Reference points applicable to different specializations of x-RACF...............................................33

6.2.2.1.3 Multiple instantiations of x-RACF ..................................................................................................33

6.2.2.2 Summary of generic Resource Admission Control Function Elementary Functions............................34

6.2.2.3 A-RACF................................................................................................................................................36

6.2.2.3.1 A-RACF main functions..................................................................................................................36

6.2.2.3.2 Reference points..............................................................................................................................36

6.2.2.4 C-RACF................................................................................................................................................36

6.2.2.4.1 C-RACF main functions..................................................................................................................36

6.2.2.5 Admission control process ....................................................................................................................36

6.2.2.5.1 A-RACF ..........................................................................................................................................36

6.2.2.5.2 C-RACF...........................................................................................................................................38

6.2.2.6 Installation of policies ...........................................................................................................................38

6.2.2.7 Charging................................................................................................................................................38

6.2.2.8 Abnormal condition handling................................................................................................................39

6.2.2.9 Deployment considerations...................................................................................................................39

6.2.2.10 Overload control ...................................................................................................................................39

6.2.2.11 Discovery Mechanism...........................................................................................................................39

6.2.3 BGF............................................................................................................................................................39

6.2.3.1 BGF main functions..............................................................................................................................39

6.2.3.2 BGF parameters....................................................................................................................................40

6.2.3.3 Reference points....................................................................................................................................40

6.2.3.4 Addressing latching...............................................................................................................................40

6.2.3.5 Abnormal conditions handling ..............................................................................................................40

6.2.3.6 Overload control...................................................................................................................................40

6.2.4 RCEF..........................................................................................................................................................40

6.2.4.1 RCEF main functions............................................................................................................................40

6.2.4.2 Reference points....................................................................................................................................41

6.2.4.3 RCEF parameters..................................................................................................................................41

6.2.5 Application Function (AF)..........................................................................................................................41

6.2.5.1 AF main functions.................................................................................................................................41

6.2.5.2 Reference points....................................................................................................................................42

6.2.5.3 Charging................................................................................................................................................42

6.2.5.4 Abnormal conditions handling ..............................................................................................................42

6.3 RACS reference points.....................................................................................................................................42

6.3.1 Rq reference point (SPDF - A-RACF)........................................................................................................42

6.3.1.1 Functional requirements........................................................................................................................42

6.3.1.1.1 Resource management mechanisms ................................................................................................43

6.3.1.1.2 Service model..................................................................................................................................43

6.3.1.1.3 Duration semantics..........................................................................................................................44

6.3.1.1.4 Audit and synchronization support..................................................................................................44

6.3.1.1.5 Report facilities for unsolicited events ............................................................................................44

6.3.1.2 Non-functional requirements.................................................................................................................44

6.3.1.2.1 Reliability requirements..................................................................................................................44

6.3.1.2.2 Security requirements......................................................................................................................44

6.3.1.3 Information exchanged over the Rq Reference Point............................................................................45

6.3.1.3.1 Resource Reservation Request........................................................................................................45

6.3.1.3.2 Resource Modification Request.......................................................................................................46

6.3.1.3.3 Resource Request/Modification Confirmation................................................................................47

6.3.1.3.4 Resource Release Request...............................................................................................................47

6.3.1.3.5 Abort Resource Reservation............................................................................................................48

6.3.2 e4 reference point (A-RACF - NASS)........................................................................................................48

6.3.3 Ia Reference Point (SPDF - BGF) ..............................................................................................................48

6.3.3.1 Functional Requirements......................................................................................................................48

6.3.3.1.1 Control of NAT, Hosted NAT traversal and Gating........................................................................48

6.3.3.1.2 Transport Protocol Type Policing....................................................................................................49

6.3.3.1.3 Bandwidth control ...........................................................................................................................49

6.3.3.1.4 QoS marking....................................................................................................................................49

6.3.3.1.5 Usage metering and statistics reporting...........................................................................................49

ETSI
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SIST ES 282 003 V2.0.0:2008
5 ETSI ES 282 003 V2.0.0 (2008-05)

6.3.3.1.6 Resource state synchronization .......................................................................................................49

6.3.3.2 Non-Functional Requirements..............................................................................................................49

6.3.3.2.1 Reliability requirements..................................................................................................................49

6.3.3.2.2 Security requirements......................................................................................................................49

6.3.3.3 Information exchanged over the Ia Reference Point .............................................................................49

6.3.4 Gq' Reference Point (AF - SPDF)...............................................................................................................49

6.3.4.1 Functional Requirements......................................................................................................................49

6.3.4.2 Non-Functional Requirements..............................................................................................................50

6.3.4.3 Information exchanged over the Gq' Reference Point...........................................................................50

6.3.5 Ri' Reference Point (SPDF-SPDF inter-domain)........................................................................................50

6.3.5.1 Functional Requirements......................................................................................................................50

6.3.5.1.1 Resource management mechanisms ................................................................................................50

6.3.5.1.2 Service model..................................................................................................................................50

6.3.5.1.3 Duration semantics..........................................................................................................................51

6.3.5.1.4 Audit and Synchronization support .................................................................................................51

6.3.5.1.5 Report facilities for unsolicited events ............................................................................................51

6.3.5.2 Non-Functional Requirements..............................................................................................................51

6.3.5.2.1 Reliability requirements..................................................................................................................51

6.3.5.2.2 Security requirements......................................................................................................................51

6.3.5.3 Information exchanged over the Ri' Reference Point............................................................................51

6.3.6 Rd' Reference Point (SPDF-SPDF intra-domain).......................................................................................51

6.3.7 Re Reference Point (A-RACF - RCEF)......................................................................................................52

6.3.7.1 Functional Requirements......................................................................................................................52

6.3.7.1.1 Policy Enforcement Management....................................................................................................52

6.3.7.2 Non-functional requirements.................................................................................................................53

6.3.7.2.1 Reliability requirements..................................................................................................................53

6.3.7.2.2 Security requirements......................................................................................................................53

6.3.7.3 Information exchanged over the Re Reference Point............................................................................53

6.3.8 Rr Reference Point (x-RACF - x-RACF intra-domain)..............................................................................53

6.3.8.1 Functional Requirements......................................................................................................................53

6.3.8.1.1 Overall features...............................................................................................................................53

6.3.8.1.2 Resource management mechanisms ................................................................................................54

6.3.8.1.3 Service model..................................................................................................................................54

6.3.8.1.4 Duration semantics..........................................................................................................................55

6.3.8.1.5 Audit and Synchronization support .................................................................................................55

6.3.8.1.6 Report facilities for unsolicited events ............................................................................................55

6.3.8.2 Non-Functional Requirements..............................................................................................................55

6.3.8.2.1 Reliability requirements..................................................................................................................55

6.3.8.2.2 Security requirements......................................................................................................................55

6.3.8.3 Information exchanged over the Rr Reference Point ............................................................................56

6.3.8.3.1 Resource Reservation Request........................................................................................................56

6.3.8.3.2 Resource Modification Request.......................................................................................................57

6.3.8.3.3 Resource Request/Modification Confirmation................................................................................58

6.3.8.3.4 Resource Release Request...............................................................................................................59

6.3.8.3.5 Abort Resource Reservation............................................................................................................59

6.3.8.3.6 Resource Allocation Request...........................................................................................................60

6.3.8.3.7 Resource Allocation Confirmation..................................................................................................61

6.4 RACS Flows: Interaction Procedures...............................................................................................................61

6.4.1 Subscriber Attaches to the Access Network ...............................................................................................61

6.4.2 Request Resource........................................................................................................................................62

6.4.2.1 Request Resource by using the push mode ...........................................................................................62

6.4.2.2 Request Resource by using the pull mode.............................................................................................63

6.4.2.2.1 Admission control using pull mode when only one x-RACF is involved in managing the

same resources.................................................................................................................................63

6.4.2.2.2 Admission control using pull mode when multiple x-RACFs are involved in managing the

same resources.................................................................................................................................65

6.4.3 Request Resource Wholesale/Retail Scenario ............................................................................................66

6.4.3.1 Request Resource with access to the A-RACF in the retail domain .....................................................66

6.4.3.2 Request Resource without access to the A-RACF in the retail domain ................................................67

6.4.4 Release Resource........................................................................................................................................69

6.4.4.1 Release Resource Request by using the push mode...................................

...

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