Resource and Admission Control in NGN - ITU
Transcript of Resource and Admission Control in NGN - ITU
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,
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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
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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
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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
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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
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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
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The End
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