Download Resource and Admission Control in NGN Ning Li Co-editor of Y.RACF

International Telecommunication Union
Resource and Admission Control in
NGN
Ning Li
Co-editor of Y.RACF
Huawei Technologies
ITU-T/ITU-D Workshop "Standardization and Development of Next Generation Networks"
Dar es Salaam, 3-5 October 2006
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
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Works on RACF in ITU-T
The functional architecture of RACF as defined in ITU RACF document
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
ITU-T/ITU-D Workshop "Standardization and Development of Next Generation Networks"
Dar es Salaam, 3-5 October 2006
3
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
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RACF Implementation Req’s
Softswitch/IMS/
IPTV/VoD Server,
BRAS/ER/SBC
The early stage implementation of RACF requires the current network to support the Rs, Rw
and the PE-FE functions.
ITU-T/ITU-D Workshop "Standardization and Development of Next Generation Networks"
Dar es Salaam, 3-5 October 2006
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Implementation Scenario 1
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.
Service Control Functions
Service Stratum
Rs
Rs
Transport Stratum
Rd
RACF
PD-FE
Network
Attachment
Control
Functions
Ru
CPE
CPN
PD-FE
Rt
Rt
TRC-FE
Rw
Rc
PE-FE
RACF
Rp
TRC-FE
Rw
PE-FE
Access Networks
Rw
Rc
Rw
PE-FE
PE-FE
Core Networks
ITU-T/ITU-D Workshop "Standardization and Development of Next Generation Networks"
Dar es Salaam, 3-5 October 2006
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Implementation Scenario 2
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.
Service Control Functions
Service Stratum
Rs
Transport Stratum
RACF
PD-FE
Network
Attachment
Control
Functions
Ru
CPN
Rt
Rc
PE-FE
RACF
PD-FE
Rt
TRC-FE
Rw
CPE
Rd
Ri
Rp
TRC-FE
Rw
PE-FE
Access Networks
Rw
Rc
Rw
PE-FE
PE-FE
Core Networks
ITU-T/ITU-D Workshop "Standardization and Development of Next Generation Networks"
Dar es Salaam, 3-5 October 2006
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Implementation Scenario 3
Scenario 3: The access and the core belong to the same administrative domain.
Service Control Functions
Service Stratum
Rs
Transport Stratum
Rd
RACF
PD-FE
Network
Attachment
Control
Functions
Ru
CPN
Rt
TRC-FE
Rw
CPE
Rt
PE-FE
Rc Rw
PE-FE
Access Networks
Rp
TRC-FE
Rw
Rw
Rc
PE-FE
PE-FE
Core Networks
ITU-T/ITU-D Workshop "Standardization and Development of Next Generation Networks"
Dar es Salaam, 3-5 October 2006
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Implementation
An E2E QoS Solution
Scenario 3
180 (SDP2)
CSCF
CSCF
180 (SDP2)
Invite (SDP1)
Service Info
RACF
Invite
Service Info
RACF
Invite (SDP1)
(SDP1)
RACF
RACF
DES
DES
LER
GGSN
LSR
3G RAN
LER
LSR
BRAS
LSR
ADSL
IP/MPLS Core
SIP B
SIP A
ITU-T/ITU-D Workshop "Standardization and Development of Next Generation Networks"
Dar es Salaam, 3-5 October 2006
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RAC solution for ADSL/LAN access
P-CSCF
A-RACF&PDF
IMS bearer NW
Access resource
reservation
SIP Phone
DSLAM
VLAN 1
VLAN 2
Modem
PC
AMS/DHCP
Server
VLAN 101
2PVC
2VLAN
VLAN 102
SBC
LAN
LAN
BAS
DHCP
Server
Radius
Server
Data NW
ITU-T/ITU-D Workshop "Standardization and Development of Next Generation Networks"
Dar es Salaam, 3-5 October 2006
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RAC Solution for UMTS Access
P-CSCF
SIP: Invite
Get subscriber information
2
AAR
4
Diameter
Diameter
3
SPR
5
Return subscriber information
AAA
1
PCRF
QoS policy and
charging rules install
OCS
7a
Diameter
Diameter
9
6
7b
SGSN
8
GGSN
UMTS RAN
Note: 3Gpp PCC compliant
ITU-T/ITU-D Workshop "Standardization and Development of Next Generation Networks"
Dar es Salaam, 3-5 October 2006
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The End
Thank you for your attention!
(http://www.huawei.com)
ITU-T/ITU-D Workshop "Standardization and Development of Next Generation Networks"
Dar es Salaam, 3-5 October 2006
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