ITU-T/ITU-D Workshop "Standardization and Development of Next Generation Networks" Dar es Salaam, 3-5 October 2006

International Telecommunication Union

Resource and Admission Control in Resource and Admission Control in NGNNGN

Ning LiCo-editor of Y.RACFHuawei Technologies

ITU-T/ITU-D Workshop "Standardization and Development of Next Generation Networks" Dar es Salaam, 3-5 October 2006 2

Outline

o Works on RACF in ITU-T

o Key features of RACF

o RACF implementation requirements

o RACF implementation scenarios

o Example E2E QoS solution

o RAC solution for ADSL/LAN access

o RAC solution for UMTS access

RAC ---- Resource and Admission Control

ITU-T/ITU-D Workshop "Standardization and Development of Next Generation Networks" Dar es Salaam, 3-5 October 2006 3

Works on RACF in ITU-T

SCF-- Service Control Functions;NACF-- Network Attachment Control Functions;PD-FE -- Policy Decision Functional Entity RACF -- Resource and Admission Control Functions;TRC-FE -- Transport Resource Control Functional Entity;PE-FE -- Policy Enforcement Functional Entity (PE-FE);TRE-FE -- Transport Resource Enforcement Functional Entity

The functional architecture of RACF as defined in ITU RACF document

ITU-T/ITU-D Workshop "Standardization and Development of Next Generation Networks" Dar es Salaam, 3-5 October 2006 4

Key Features of RACF

o Key Features of RAC:

• Resource arbitrator

• Service-driven QoS control, traffic control, NAPT control and FW

inspection mode selection

• Incremental implementation

• Unified Rs to the service layer

• Unified Rw interface going down to network edge devices

• Compliance checking of the traffic and QoS against subscribed bandwidth

and QoS

ITU-T/ITU-D Workshop "Standardization and Development of Next Generation Networks" Dar es Salaam, 3-5 October 2006 5

RACF Implementation Req’s

The early stage implementation of RACF requires the current network to support the Rs, Rw

and the PE-FE functions.

BRAS/ER/SBC

Softswitch/IMS/IPTV/VoD Server,

ITU-T/ITU-D Workshop "Standardization and Development of Next Generation Networks" Dar es Salaam, 3-5 October 2006 6

Scenario 1: the access network and the core network belong to different administrative domains, and the RACFs at both sides interact with the SCF with no information exchanged in the between.

Implementation Scenario 1

RACFRACF

Core Networks Access Networks CPN

Network Attachment

Control Functions

PE-FEPE-FE PE-FE

Rs Rs

Rw

Ru

Rw

Rt

Rc

CPE PE-FE

Rw Rc

TRC-FE

RpRt

Rw

Service Stratum

Transport Stratum

PD-FE

Service Control Functions

RdPD-FE

TRC-FE

RACFRACF

Core Networks Access Networks CPN

Network Attachment

Control Functions

PE-FEPE-FE PE-FE

Rs Rs

Rw

Ru

Rw

Rt

Rc

CPE PE-FE

Rw Rc

TRC-FE

RpRt

Rw

Service Stratum

Transport Stratum

PD-FE

Service Control Functions

RdPD-FE

TRC-FE

ITU-T/ITU-D Workshop "Standardization and Development of Next Generation Networks" Dar es Salaam, 3-5 October 2006 7

Scenario 2：The access and the core belong to different administrative domains, and the SCF interacts with either of the RACFs at the two sides. The RACFs in the core and the access exchange information via the Ri reference point. Note: The Ri reference point is to be detailed in R2.

Implementation Scenario 2

RACFRACF

Core Networks Access Networks CPN

Network Attachment

Control Functions

PE-FEPE-FE PE-FE

Rs

Rw

Ru

Rw

Rt

Rc

CPE PE-FE

Rw Rc

TRC-FE

RpRt

Rw

Service Stratum

Transport Stratum

PD-FE

Service Control Functions

RdPD-FE

TRC-FE

Ri RACFRACF

Core Networks Access Networks CPN

Network Attachment

Control Functions

PE-FEPE-FE PE-FE

Rs

Rw

Ru

Rw

Rt

Rc

CPE PE-FE

Rw Rc

TRC-FE

RpRt

Rw

Service Stratum

Transport Stratum

PD-FE

Service Control Functions

RdPD-FE

TRC-FE

Ri

ITU-T/ITU-D Workshop "Standardization and Development of Next Generation Networks" Dar es Salaam, 3-5 October 2006 8

Scenario 3: The access and the core belong to the same administrative domain.

Implementation Scenario 3

RACF

Core Networks Access Networks CPN

Network Attachment

Control Functions

PE-FEPE-FE PE-FE

Rs

Rw

Ru

Rw

Rt

Rc

CPE PE-FE

Rw Rc

TRC-FE

RpRt

Rw

Service Stratum

Transport Stratum

PD-FE

Service Control Functions

Rd

TRC-FE

RACF

Core Networks Access Networks CPN

Network Attachment

Control Functions

PE-FEPE-FE PE-FE

Rs

Rw

Ru

Rw

Rt

Rc

CPE PE-FE

Rw Rc

TRC-FE

RpRt

Rw

Service Stratum

Transport Stratum

PD-FE

Service Control Functions

Rd

TRC-FE

ITU-T/ITU-D Workshop "Standardization and Development of Next Generation Networks" Dar es Salaam, 3-5 October 2006 9

180 (SDP2)

CSCF CSCF

IP/MPLS CoreIP/MPLS Core

LERLER LERLERLSRLSRLSRLSR LSRLSR

3G RAN ADSL

RACF

GGSNBRAS

SIP ASIP B

Invite

(SDP1)

Invite (SDP1)

Invite (SDP1)

180 (SDP2)

Service Info Service Info

DES DES

RACF

RACF RACF

Implementation Scenario 3An E2E QoS Solution

ITU-T/ITU-D Workshop "Standardization and Development of Next Generation Networks" Dar es Salaam, 3-5 October 2006 10

LANLAN

VLAN 1

VLAN 2VLAN 101

VLAN 102

IMS bearer NWAMS/DHCP

Server

Data NW

DHCPServer Radius

Server

2PVC2VLAN

SBC

BAS

DSLAM

Modem

SIP Phone

PC

A-RACF&PDF

P-CSCF

Access resource reservation

RAC solution for ADSL/LAN access

ITU-T/ITU-D Workshop "Standardization and Development of Next Generation Networks" Dar es Salaam, 3-5 October 2006 11

SIP: Invite

6 9

8

PP--CSCFCSCF SPRSPR

PCRFPCRF

GGSNGGSN

UMTS RAN

SGSNSGSN

OCSOCS7a

7b

1

Diameter Diameter

DiameterDiameter

2

3

AAR

AAA

45

Get subscriber information

Return subscriber information

QoS policy and charging rules install

RAC Solution for UMTS Access

Note: 3Gpp PCC compliant

ITU-T/ITU-D Workshop "Standardization and Development of Next Generation Networks" Dar es Salaam, 3-5 October 2006 12

The End

Thank you for your attention!

(http://www.huawei.com)