Las Vegas, 19-20 March 2006 Resource and Admission Control ... · o Media Profile • Media Number...

ITU-T / ATIS Workshop “Next Generation Technology and Standardization”

Las Vegas, 19-20 March 2006

ITU-T

Resource and Admission Control Resource and Admission Control and IMSand IMS

Keith MainwaringCisco Systems

ITU-T / ATIS Workshop “Next Generation Technology and Standardization“

Las Vegas, 19-20 March 2006ITU-T 2

ETSI NGN Architecture

Resource and Admission Control Functionality

RACS

Based on3GPP IMS

IP ConnectivityAccess NetworkAnd related functionality

Network AttachmentFunctionality

NASS

Other Multimedia Components …Streaming Services

(RTSP based)

Applications

Core transport Network

3GPP IP-CAN

Access Transport Network

3GPP Terminals

NGN Terminals

CustomerNetworks

UserProfiles

Other N

etworks

LegacyTerminals

GW

PSTN / ISDN Emulation(SIP-I based)

IP Multimedia Component (Core IMS)

(SIP based)



ETSI TISPAN NGN IMS Overview

Other IP N

etworks

IP Transfer (Access and Core)

T-MGF

I-BGF

AS

UPSF

I/S-CSCF

SLF

ChargingFunct ions

IWF

« Core IMS»

Mw

Mx

Mr

MgMj

Mi

Mp MnGm

Gq'

ISC/MaCx Dx

DhSh

Ic

Rf/Ro

Rf/RoIb

Iw

Gq'

PSTN/ISD

N

SGFMRFC MGCF

MRFP

Resource and Admission Control Subsystem

Network Attachment Subsystem

e2

Ie

MwIBCF

MxMk

UE

Ut

BGCF

MxP-CSCF



NGN Architecture Overview

Service ControlFunctions

Transport stratum

Service stratum

ControlMedia

Man

agem

ent

Func

tions

Management

Service UserProfiles

Transport User Profiles

ANI

Transport Control Functions

Resource and Admission

Control Functions

Network Attachment

Control Functions

NNIUNI

Note: UNI/NNI/ANI are not meant to represent any specific interfaces.(This type of note is written in TR-FRA word file.)

Application Support Functions & Service Support Functions

Applications

Transport Functions

End-UserFunctions

OtherNetworks

Service ControlFunctions

Transport stratum

Service stratum

ControlMedia

Man

agem

ent

Func

tions

Management



Transport User Profiles

ANI

Transport Control Functions


Control Functions


Control Functions

Network Attachment

Control Functions

Network Attachment

Control Functions

NNIUNI

Note: UNI/NNI/ANI are not meant to represent any specific interfaces.(This type of note is written in TR-FRA word file.)

Application Support Functions & Service Support Functions

Applications

Transport Functions

End-UserFunctions

OtherNetworks



ITU-T NGN Transport and Service Configuration

LegacyTerminals

Note: Gateway (GW) may exist in either Transport Stratum or End-User Functions.

*

LegacyTerminals

Transport Stratum

Service Stratum

End-UserFunctions

Application Functions

Core transport Functions

NGNTerminals

CustomerNetworks

Other N

etworks

Application Support Functions and Service Support Functions

Core TransportFunctions

Other N

etworks

Transport Stratum

EdgeFunctions

Access Transport Functions

ServiceControl

Functions

Network AccessAttachment Functions

NAAF

Network Attachment Control Functions

(NACF)

Access NetworkFunctions

Resource and AdmissionControl Functions

(RACF)User

ProfileFunctions

T. UserProfileFunctions

GWGW

Other Multimedia ServiceComponents …Streaming ServiceComponent

PSTN / ISDN EmulationService ComponentIP Multimedia Component&PSTN/ISDN Simulation

IP MultimediaService Component

S. UserProfile

Functions

GWGW

Applications

LegacyTerminals

Note: Gateway (GW) may exist in either Transport Stratum or End-User Functions.

*

LegacyTerminals

Transport Stratum

Service Stratum

End-UserFunctions

Application Functions

Core transport Functions

NGNTerminals

CustomerNetworks

Other N

etworks

Application Support Functions and Service Support Functions

Core TransportFunctions

Other N

etworks

Transport Stratum

EdgeFunctions



ServiceControl

Functions

Network AccessAttachment Functions

NAAF


(NACF)

Access NetworkFunctions

Resource and AdmissionControl Functions

(RACF)User

ProfileFunctions


UserProfile

Functions


GWGWGWGW

Other Multimedia ServiceComponents …Streaming ServiceComponent

PSTN / ISDN EmulationService ComponentIP Multimedia Component&PSTN/ISDN Simulation

IP MultimediaService Component

S. UserProfile

Functions

GWGWGWGW

Applications



Service Control

Application

other IP MMNetwork

(e.g. IMS)

Core Transport

PSTN/ISDN

Scope of NGN

Internet

Man

agem

ent f

unct

ions

T-7:TrunkMedia

GatewayFE

T-6:Inter-

connection Border

Gateway FE

S-6: S. Authentication & Authorization FE

S-8: Access GWControl FE

NACF RACF

LegacyTerminal

RGW

Customer Network

NGNTerminal

LegacyTerminal

ANIApplications

S-11: User Signaling Interworking FE

End-User Function

S-3: Interrogating Call Session Control FE

S-14: Media Resource Broker FE

T-16 Core TransportResource Control FE

Access Packet Transport Functions

T-2: AccessNode FE

T-1: AccessMedia

GatewayFE

T-3: Edge Node FE

T-5:AccessBorder

GatewayFE

S-1: Serving Call Session Control FE

S-10: BreakoutGateway Control FE

S-9: Media GWControl FE

T-15: Access Transport Resource Control FE

S-13: Media Resource Control FE

Core Packet Transport Functions

T-8:Media

ResourceProcessing

FE

T-11:T. Authentication &Authorization

FE

T-12: T. User Profile FE

T-4: AccessRelay FE

T-13: T. Locationmanagement

FE

S-2: Proxy Call SessionControl FE

T-10:T. Network Access Control FE

S-4: Subscription Locator FE

S-5: S. User Profile FE

Application Support Functions & Service Support Functions(may include own Authentication, Authorization and Accounting)

Other NGN

T-14: Policy Decision FE

S-12: Network Signaling Interworking FE

T-9:SignallingGateway

FE

S-15:Multimedia Service FE

S-7: Interconnection Border Gateway

Control FE

NGN UNI

Service Control

Application

other IP MMNetwork

(e.g. IMS)

Core Transport

PSTN/ISDN

Scope of NGN

Internet

Man

agem

ent f

unct

ions

T-7:TrunkMedia

GatewayFE

T-6:Inter-

connection Border

Gateway FE

S-6: S. Authentication & Authorization FE

S-8: Access GWControl FE

NACF RACF

LegacyTerminal

RGW

Customer Network

NGNTerminal

LegacyTerminal

ANIApplications

S-11: User Signaling Interworking FE

End-User Function

S-3: Interrogating Call Session Control FE

S-14: Media Resource Broker FE

T-16 Core TransportResource Control FE

Access Packet Transport Functions

T-2: AccessNode FE

T-1: AccessMedia

GatewayFE

T-3: Edge Node FE

T-5:AccessBorder

GatewayFE

S-1: Serving Call Session Control FE

S-10: BreakoutGateway Control FE

S-9: Media GWControl FE

T-15: Access Transport Resource Control FE

S-13: Media Resource Control FE

Core Packet Transport Functions

T-8:Media

ResourceProcessing

FE

T-11:T. Authentication &Authorization

FE

T-12: T. User Profile FE

T-4: AccessRelay FE

T-13: T. Locationmanagement

FE

S-2: Proxy Call SessionControl FE

T-10:T. Network Access Control FE





Application Support Functions & Service Support Functions(may include own Authentication, Authorization and Accounting)

Other NGN

T-14: Policy Decision FE

S-12: Network Signaling Interworking FE

T-9:SignallingGateway

FE

S-15:Multimedia Service FE

S-7: Interconnection Border Gateway

Control FE

NGN UNI



Generic Resource & Admission Control Architecture in NGN

RACF

Service Control Functions

Transport Functions


Other N

GN

sTRC-FE

Rs

Rw

Ru

Rn Rc

Rp Rt

Service Stratum

Transport Stratum

RdRi

PE-FE

PD-FE

TE-FEInterconnection

Functions

Functional EntitiesPD-FE: Policy DecisionPE-FE: Policy EnforcementTRC-FE: Transport Resource ControlTE-FE: Transport Enforcement:



Information Flow for Policy Push Scenario


RACF

Transport FunctionsCPE

(1)

(3)

(2)



Information Flow for Policy Pull Scenario


RACF

Transport FunctionsCPE

(1)

(2)(3)

(4)

(5)

(6)



Possible point of control scenarios - 1

Resource and Admission Control Functions


Core TransportAccess Transport

CPNPEF PEF

Rs

Rw

Ru

Rw

BGF PEF

Rw Rc

Service Stratum

Transport Stratum

Access Transport

CPNPEFPEF

Rs

Rw

Ru

Rw

BGFPEF

RwRc

Network Access

Attachment Functions

Network Access


SCF

PDF

TRCF

SCF

PDF

TRCF

SCFSCF

Rc

RpRt

Rc

TRCFTRCF

Rc

TRCFRt Rt

PDF PDFRi RiRt



Possible point of control scenarios - 2

Resource and Admission Control Functions


Core TransportAccess Transport

CPNPEF PEF

Rs

Rw

Ru

Rw

BGF PEF

Rw Rc

Service Stratum

Transport Stratum

Access Transport

CPNPEFPEF

Rs’

Rw

Ru

Rw

BGFPEF

RwRc

Network Access


Network Access


SCF

PDF

TRCF

SCF

PDF

A-TRCF

SCPFSCF

Rc

RpRt

Rc

TRCFTRCF

Rc

TRCF

RiRt Rt

PDF PDFRi RiRt



Back Up Slides



Resource & Admission Control Functions

o Covers procedures for the control of QoS (including resource reservation, admission control and gate control) , control of NAPT and Firewall traversal.

o Admission control involves checking authorisation based on user profiles, SLAs, operator specific policy rules, and resource availability within access and core transport.

o Within the NGN architecture, the RACF acts as the arbitrator for resource negotiation and allocation between Application Functions and Transport Functions.

o Similar to ETSI but wider scope than TISPAN Release 1 (e.g. including core network control and inter-domain PDF-PDF communication).




o Dynamic provision of IP address and other user equipment configuration parameters.

o Authentication of user access network, prior or during the IP address allocation procedure.

o Authorisation of user access network, based on user profiles (e.g. access transport subscription).

o Access network configuration, based on user profiles.

o Location management.



Functional Entity Capabilities

Policy Decision FEo IP Packet Marking Control o Gate Control o Rate limiting Controlo NAPT Controlo Firewall Working Mode Selection Transport Resource Control FEo Resource status monitoring and network information collectiono Resource based admission controlo Transport dependent policy controlPolicy Enforcement FEo Opening and closing gate: enabling or disabling packet filtering for a IP media flow• Rate limiting and bandwidth allocation• Traffic classification and marking• Traffic policing and shaping• Mapping of layer 3 QoS information onto link-layer QoS information (e.g. setting 802.1p priority

values)• Network address and port translation• Media Relay (i.e. address latching) for NAT Traversal• Collecting and reporting resource Usage information (e.g. start-time, end-time, octets of sent data)• Packet filtering based firewall: inspecting and dropping packets based on security policy rules [Transport Enforcement FE• enforces the transport policy rules instructed by the TRC-FE at the aggregate transport level (e.g.

VLAN, VPN and MPLS) ]



Rw interface – Resource Request

o Application Identifiero Session Identifiero Global IP Address Information (optional, see note

1)• Unique IP address• Address Realm

o Transport Subscriber Identifier (optional, see note 1)

o Resource Request Client Information• Client Name• Request Class

o Reservation Holding Time o Resource Control Session Information (Optional)o Dynamic firewall working mode (Optional)o Charging correlation information (Optional)

o Media Profile• Media Number• Type of Service • Class of Service (Optional)• Media Priority (Optional)• Path Selection Information (Optional)• Media Flow Description

o - Flow directiono - Flow Numbero - Flow Status o - Protocol Versiono - IP Addresseso - Ports o - Protocol Numbero - Bandwidth o - Gate Statuso - Network QoS handling class (Optional)o Resource Reservation Mode o Bearer Event Notification Information (Optional)

• Service Information Indicator• Bearer Loss Indicator • Bearer Recovery Indicator• Bearer Release Indicator

o NAPT Control and NAT Traversal (Conditional)• Address Binding Information Request

Las Vegas, 19-20 March 2006 Resource and Admission Control ... · o Media Profile • Media Number...

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