NGN Architecture & Framework-20081014

8/8/2019 NGN Architecture & Framework-20081014

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NGN Architecture andFramework

Jeong Yun KIM

ETRI

[email protected]


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Contents

Introduction

NGN Components

NGN Architecture

Transport Stratum

Service Stratum PSTN/ISDN Emulation Service Component

Call Server-based

IMS-based

Next Step

Appendix : ETRIs BcN Products


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Introduction


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NGN

NGNCAPEX/OPEX efficiency

Fast service creation/delivery

Multi-terminal support

Enabling integrated/blended service

Current Network


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Definition of NGN


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Support for Multiple Access Technologies

Distributed control distributed processing nature of IP networks

location transparency for distributed computing

Open control support service creation, service updating, and incorporation of

service logic provision by third parties

Independent service provisioning Separation network operation from distributed, open control

mechanismpromote a competitive environment for NGN development in order

to speed up the provision of diversified value-added services

General principles of NGN


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Support for the services in a converged network This is needed to generate flexible, easy-to-use multimedia services,

by tapping the technical potential of the converged, fixed-mobile

functional architecture of the NGN.

Enhanced security and protection

This is the basic principle of an open architecture. It is imperative toprotect the network infrastructure by providing mechanisms for

security and survivability in the relevant layers

Functional entity characteristics Functional entities may not be distributed over multiple physical

units but may have multiple instances

General principles of NGN


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NGN functions are divided into service stratum functions and

transport stratum functions

Transport stratum

Service stratum

Control

Media

ManagementFunctions

Management

ANI

Transport Control Functions

Resource andAdmission

Control Functions

Network AttachmentControl Functions

Network AttachmentControl Functions

NNIUNI

Application Support Functions & Service Support Functions

Applications

Transport Functions

End-User

FunctionsOther

Networks

Service Control

Functions

Service User

Profiles

Service User

Profiles

Transport UserProfiles

Transport UserProfiles

NGN Architecture Overview


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NGN Components


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Legacy

Terminals

Note: Gateway (GW) may exist in either Transport Stratum

or End-User Functions.*

Legacy

Terminals

Transport Stratum

Service Stratum

End-User

Functions

Application Functions

Core transport

FunctionsNGN

Terminals

Customer

Networks

O

therNetworks

Application Support Functions and Service Support Functions

Core TransportFunctions

O

therNetworks

Edge

Functions

Access Transport

Functions

Access Transport

Functions

Service

Control

Functions

Network Access

Attachment Functions

Network Attachment

Control Functions

(NACF)

Access Network

Functions

Resource and Admission

Control Functions

(RACF)

User

Profile

Functions

T. User

Profile

Functions

User

Profile

Functions

T. User

Profile

Functions

GWGWGWGW

Other NGN Service

Components

PSTN / ISDN Emulation

Service Component

IP Multimedia Component&PSTN/ISDN Simulation

IP Multimedia

Service Component

S. User

Profile

Functions

GWGWGWGW

Applications

NGN Components


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IP Multimedia Service component

It supports mediated multimedia services

voice or video telephony or PSTN/ISDN simulation,

subscribe/notify for presence information and the message method for

message exchange

PSTN/ISDN Emulation Service component It refers to the provision ofPSTN/ISDN service capabilities and

interfaces using adaptation to an IP infrastructure.

It enables the support of legacy terminals connected through a

gateway to an IP network.

All PSTN/ISDN services remain available and identical, such that endusers are unaware that they are not connected to a TDM-based

PSTN/ISDN.

NGN service-specific components


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Other NGN service components

The definition of other NGN service-specific components is for

further study.

Service specific components may be required in order for the NGN

to support services such as content delivery services, multimedia

multicast or broadcast services , push services, data retrieval

applications, data communication services, online applications,sensor network services, remote control services, and over-the-

network device management

NGN service-specific components


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Network Attachment Control Function component

Network-level Authentication, Authorization and IP addressallocation for a user/terminal

Resource Admission Control Function component

QoS management according to the service request from a user

NGN transport-specific components


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NGN Architecture


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The transport functionsprovide the connectivity for all

components and physically separated functions within theNGN

Access Network functions

End-users access to the network

collecting and aggregating the traffic coming from these accessestowards the core network

perform QoS control mechanisms dealing directly with user traffic

Edge functions

used for media and traffic processing when aggregated traffic

coming from different access networks is merged into the coretransport network

Transport Functions


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Core transport functions

ensuring information transport throughout the core network

Gateway functions

interwork with end user functions and other networks including

other NGNs and many existing networks

Media handling functions

media resource processing for the services provision, such as

generation of tone signals and trans-coding

Transport Functions


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Resource and admission control functions (RACF)

provide QoS control (including resource reservation, admissioncontrol and gate control),NAPT and/or FW traversal control

Functions over access and core transport networks.

Admission control involves checking authorisation based on user

profiles, SLAs, operator specific policy rules, service priority, and

resource availability within access and core transport act as the arbitrator for resource negotiation and allocationbetween

Service Control Functions and Transport Functions

interacts with Service Control Functions and Transport Functions for

Session-based applications (e.g. SIP call or video streaming)

interact with Network Attachment Control Functions (NACF,including network access registration, authentication and

authorization, parameters configuration) for checking user profiles

and SLAs held by them



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Network Attachment Control functions (NACF)

provide registration at access level and initialization of End-userfunctions for accessing to the NGN services

provide network level identification/authentication, manage the IP

address space of the Access Network and authenticate access sessions

announce the contact point of the NGN Service/Applications

functions to the end user Functionalities

Dynamic provisioning of IP addresses and other user equipment configuration

parameters.

By endorsement of user, auto-discovery of user equipment capabilities and other

parameters.

Authentication of end user and network at the IP layer (and possibly other layers). Authorization of network access, based on user profiles.

Access network configuration, based on user profiles.

Location management at the IP layer



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Service Control Functions

include resource control, registration, and authentication andauthorization functions at the service level for both mediated and non-

mediated services

include functions for controlling media resources, i.e., specialized

resources and gateways at the service-signaling level

accommodate service user profile

Application Support Functions and Service Support

Functions (ASF&SSF)

include functions such as the gateway, registration, authentication and

authorization functions at the application level

work in conjunction with the Service control functions toprovide

end-users and applications with the value added services they request

Functions of Service Stratum


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End User Functions

No assumptions are made about the diverse end-user interfaces andend-user networks that may be connected to the NGN accessnetwork. End-user equipment may be either mobile or fixed

Management Functions

manage the NGN in order to provide NGN services with theexpected quality, security, and reliability

are allocated in a distributed manner to each functional entity (FE)

interact with network element (NE) management, networkmanagement, and service management FEs

Fault management

Configuration management

Accounting management: include charging and billing functions Performance management

Security management

The others


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Three distinct domains Applications

Application Support functions and Service Support functions in the

service stratum of the NGN

certain NGN resources and capabilities, including those in the transport

stratum, capabilities such as presence, location information, charging

function, security schemes

Applications domain those trusted by network/server providers: network/server providers

themselves and subordinate organizations or partners

those that are not: independent service providers

Application Network Interface (ANI) the functional area of ASF&SSF offers service-enabling resources to the

Applications area, independently of the underlying network technologies

NGN Service Architecture


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T-6: InterconnectionBorder Gateway FE

T-8:Media

Resource Processing FE

T-1: Access Media

Gateway FE Core Transport Functions

TC-T1

T-U1

T-9:Signalling

Gateway FE

S-T2

T-U2

T-U3

S-T3S-T1 S-T5 S-T4

T-ON1

T-ON2

T-ON3

T-2:Access Node FET-3: Edge Node

FE Access Transport Functions

TC-T2 TC-T5

Core Transport Processing

T-4:Access Relay

FE

T-5:Access Border

Gateway FE

T-7:Trunking Media

Gateway FE

TC-T9TC-T6

Access Transport Processing

TC-T4TC-T3 A-T1

FEs of Transport Functions


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Access Media Gateway Functional Entity (AMG-FE)

provides interworking between the packet-based transport used inthe NGN and analogue lines or ISDN access

provides bi-directional media processing functions for user plane

traffic between PSTN/ISDN and the NGN under the control of the

AGC-FE

provides adequate transfer functions for PSTN/ISDN user callcontrol signalling to the AGC-FE for processing.

optionally supports payload processing functions (e.g., codecs and

echo cancellers).

provides the TDM/IP interworking function (refer to Y.TDMIP ) to

support ISDN emulation service in case ISDN unrestricted bearer isneeded.



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Access Node Functional Entity (AN-FE)

directly connects to End user functions and terminates thefirst/last mile link signals at the network side.

Generally, it is a Layer 2 device that may be IP capable

may perform packet filtering, traffic classification, marking,

policing and shaping at flow level or user level under the control of

the RACF

should support the functions of Policy Enforcement Functional

Entity (PE-FE) and controlled by the RACF



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Access Relay Functional Entity (AR-FE)

a relay between End-User functions and the NAC-FE that inserts localpre-configuration information when necessary

For example when using DHCP, the AR-FE acts as a DHCP Relay Agent

Access Border Gateway Functional Entity (ABG-FE)

A packet gateway between an access network and a core network used

to mask a service providers network from access networks, through

which End-user functions accessing packet-based services

may include opening and closing gate, packet filtering based firewall,

traffic classification and marking, traffic policing and shaping, network

address and port translation, media relay (i.e. media latching) for NAT

traversal, and collecting and reporting resource usage information

support the functions of PE-FE controlled by the RACF



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Interconnection Border Gateway (IBG)-FE

a packet gateway used to interconnect an operators corenetwork with another operators core networksupporting the

packet-based services

shall support the functions of PE-FE (except for remote NAPT

Traversal) controlled by the RACF

Media conversion (e.g., G.711 and AMR, T.38 and G.711) Inter-domain IPv4/IPv6 conversion

Media encryption

Fax/modem processing



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Trunking Media Gateway (TMG)-FE

provides interworking between the packet-based transport used inthe NGN and trunk lines from the circuit-switched network.

It is under the control of the MGC-FE.

may support payload processing (e.g., codecs, echo cancellers, and

conference bridges)

optionally provides the TDM/IP interworking function (refer toY.1453 ) in order to support ISDN emulation service in case ISDN

unrestricted bearer is needed

Signalling Gateway (SG)-FE

is responsible for signaling transport interworking between theNGN and existing networks such as PSTN, ISDN, IN networks, and

Signaling System No.7



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Media Resource Processing (MRP)-FE

provides payload processing of packets used in the NGN allocates specialized resources (such as announcement server,

notification tone, and voice recognition resources, and voice menu

and conference resources).

provides media mixing functions under the control of the MRC-

FE. receives and generates DTMF signals.

generates tone signals (e.g., ring back).

generates announcements.

provides trans-coding, text-to-speech, video mixing, conference

bridge, data conference, fax, voice and video recording, and voicerecognition capabilities.



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NACF

T-12: T. User

Profile FE

T-14:

Access Management FE

T-11: T. Authentication

& Authorization FE

T-13: T. Location

Management FE

RACF

TC-T6 (Note 4)

T-16: Policy Decision FETC-TC1

TC-T1

S-TC1 S-TC2 S-TC3 S-TC4

TC-T2 (Note 3)

TC-T9 (Note 4)

TC-T5 (Note 3)

T-17: TransportResource Control FE

S-TC5

TC-T3 (Note 1)

TC-T4 (Note 2)

TC-ON1

TC-U1

T-10: Network

Access Configuration FE

T-15: Home GateWay

Configuration FE

TC-Ux

Note 1: applicable when TRC-FE operates in the access network domain

Note 2: applicable when TRC-FE operates in the core network domain

Note 3: applicable when PD-FE operates in the access network domain

Note 4: applicable when PD-FE operates in the core network domain

FEs of Transport Control Functions


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Network Access Configuration (NAC)-FE

IP address allocation to terminalsmay also distribute other network configuration parameters, such as

the addresses of DNS servers and signalling proxies (e.g., the

address of the P-CSC-FE in order to have access to service stratum

functions)

should be able to provide an access network identifier to aterminal This information uniquely identifies the access network to

which the terminal is attached

discovery function to support auto configuration

Transport Authentication and Authorization (TAA)-FE

provides authentication and authorization functions in the transportstratum, based on user profiles (TUP-FE), for network access



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Access Management (AM)-FE

translates network access requests issued by the User Equipments.It forwards the requests for allocation of an IP address and possibly

additional network configuration parameters to/from the NAC-FE

forwards requests to the TAA-FE to authenticate the user,

authorize or deny the network access, and retrieve user-specific

access configuration parameters

Home GateWay Configuration (HGWC)-FE

is used during initialization and update of the HGW

provides to the HGW with additional configuration information (e.g.

configuration of a firewall internally in the HGW, QoS marking ofIP packets etc.)



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Policy Decision (PD)-FE

provides a single contact point to the SCF and hides the details oftransport network to the SCF

makes the final decision regarding network resource and

admission controlbased on network policy rules, SLAs, service

information provided by the SCF, transport subscription

information provided by the NACF in access networks, and

resource-based admission decision results provided by TRC-FE.

controls the gates in the PE-FEs at per flow level.

consists of transport technology-independent resource control

functions and is independent of the SCF as well.

The policy rules used by PD-FE are service-based and are assumedto be provided by the network operators



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Transport Resource Control (TRC)-FE

deals with the diversity of underlying transport technologies andprovides the resource-based admission control decision results

to PD-FE

is service-independent and consists of transport technology-

dependent resource control functions.

The PD-FE requests the TRC-FE instances in the involved transportnetworks through the Rt reference point to detect and determine the

requested QoS resource along the media flow path

may collect and maintain the transport network topology and

the transport resource status information and authorize

resource admission control of a transport network based on

network information such as topology and/or connectivity, network

and element resource availability, as well as the transport

subscription information in access networks



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S-U1

S-ON2

S-TC5S-TC1 S-T3

S-12 Network

Signaling

Interworking FE

S-ON1

S-4: Subscription

Locator FE

S-5: Service User

Profile FE

S-TC2

S-ON3

S-U2

S-11: User

Signaling

Interworking FE

S-T5

Service Control

S-1: Serving Call Session

Control FE

S-T2S-TC3S-T1 S-TC4 S-T4

A-S1 A-S3 A-S4 A-S5 A-S6

Application Support Functions & Service Support Functions

S-15 General Services

Control FE

S-14: Media Resource

Broker FE

S-6: Service

Authentication

& Authorization FE

A-S2

S-3: Interrogating

Call Session Control FE

S-8: Access

Gateway Control

FE

S-7: Interconnection

Border Gateway

Control FE

S-2: Proxy Call

Session Control FE

S-13: Media

Resource

Control FE

S-10 Breakout

Gateway Control

FE

S-9: Media Gateway

Control FE

FEs of Service Control Functions


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Serving Call Session Control (S-CSC)-FE

handles functionality related to session control, e.g., registration,origination of sessions (session setup, modification, and teardown),

and routing of session messages

Registration: It can learn that a particular user and/or terminal

identifier is currently in service and can interact with the SUP-FE

(possibly via the SL-FE) to obtain relevant service profile and

address information

Service Triggering: Based on an analysis of the session control

messages it can route session control messages to appropriate

Application Support and Service Support functions

Determination of Routing of session control messages: It can

determine the routing for session control messages based on routing(location) information



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Proxy Call Session Control (P-CSC)-FE

acts as the contact point to the user terminal for session-based services forward session control requests related to registration to an appropriate I-

CSC-FE

forward session control requests received from the terminal to the S-CSC-

FE

forwards session control requests or responses to the terminal

detects and handles emergency session establishment requests.

maintains a security association between itself and each terminal.

perform message compression/decompression

may perform inter-domain topology hiding

may perform inter-domain protocol repair

participate in the authorisation of media resources and QoS management

supports an NAPT Proxy Function (NPF) for network address hiding and

remote NAPT traversal



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Interrogating Call Session Control (I-CSC)-FE

the contact point within an operator's network for all serviceconnections destined to a user of that network operator

Registration

Assigning an S-CSC-FE to a user performing SIP registration

Session-related and session-unrelated flows

Obtaining from the SUP-FE the address of the currently assigned S-CSC-FE.

Forwarding a SIP request or response to the S-CSC-FE determined by

the above step for incoming sessions.

Subscription Locator (SL)-FE

may be queried by the S-CSC-FE, I-CSC-FE, or AS-FE to obtainthe address of the SUP-FE for the required subscriber

is not required in networks that utilise a single logical SUP-FE

element



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Service User Profile (SUP)-FE

storing user profiles, subscriber-related location data, and presencestatus data in the Service stratum

It performs basic data management and maintenance functions

User profile management functions

authentication/authorization/service subscription information

subscriber mobility/location/presence (e.g., online/offline status) charging

It is responsible for responses to queries for user profiles

It provides access to user data

It may also be used for support of commonly AAA and security

schemes



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Service Authentication and Authorization (SAA)-FE

provides authentication and authorization in the service stratum It ensures that the end-user has valid utilization rights for the

requested service.

It performs policy control at the service level by using policy rules

contained in a user profile database.

It works as the first step in the mobility management process and isused for authentication, authorization, and accounting of

users/terminals.

The result of the authorization function is a yes/no response to a

user connection request



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Interconnection Border Gateway Control (IBGC)-FE

controls Interconnection Border Gateway Functional Entities (IBG-FEs) via RACF to interwork with other packet-based networks

Inter-domain network topology hiding

Control of IBG-FEs to implement session-based processing (E.g.

media conversion and NA(P)T).

Inter-domain protocol repair Interaction with PD-FE for resource reservation, resource allocation

and/or other resource related information (e.g., the available

resource parameters if the required resources are not available, QoS

label etc.)



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Access Gateway Control (AGC)-FE

controls one or more AMG-FEs to access PSTN or ISDN users andhandles registration, authentication, and security for the user

It originates and terminates session control signaling.

It originates and terminates gateway control flows to control AMG-

FE.

It may initiate and terminate UNI control flows in order to provideISDN (supplementary) services.

It forwards the session control flow to the S-CSC-FE.

It processes and forwards requests from the AMG-FE to the S-CSC-

FE

It may process and forward service requests from the AMG-FE tothe AS-FE through the S-CSC-FE

It supports an NAPT Proxy Function (NPF) for network address

hiding and remote NAPT traversal



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Media Gateway Control (MGC)-FE

controls the TMG-FE to interwork with PSTN/ISDN It processes and forwards requests from the SG-FE to the S-CSC-

FE through the I-CSC-FE

It may process and forward value-added service requests from

PSTN/ISDN to the AS-FE through the BGC-FE and S-CSC-FE.

Breakout Gateway Control (BGC)-FE

selects the network in which PSTN breakout is to occur and selects

the MGC-FE



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User Signalling Interworking (USIW)-FE

the interworking and information screening functions fordifferent types of application signalling at the subscriber side

(access-to-core), which can be located at the border of the access

and core networks for subscriber-side signalling interworking

Network Signalling Interworking (NSIW)-FE the interworking and information screening functions for

different types of application signalling at the trunk side (inter-

operator), which can be located at the border of the core networks

for trunk-side signalling interworking



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Media Resource Broker (MRB)-FE

assigns specific media server resources to incoming calls at therequest of service applications (i.e., an AS)

acquires knowledge of media server resource utilization that it can

use to help decide which media server resources to assign to

resource requests from applications.

employs methods/algorithms to determine media server resourceassignment.

acquires knowledge of media server resources status related to in-

service and out-of-service status and reservations via an operational

type of reference point



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General Services Control (GSC)-FE

It is expected to provide a platform for all envisaged services overpacket-based networks

GSC-FE acts as a contact point for application support and service

support functional entities, as well as user terminals

GSC-FE authenticates communications from these, and based on

those communications, the GSC-FE provides information onsession flows and their required QoS characteristics to the PD-FE,

as well as to the IBC-FE when appropriate.

The GSC-FE maintains session-related state as needed to assist in

policy actions.



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A-3: APL-SCM-FE*A-2: APL-GW-FE*

Applications

A-4: SS-FE

A-1: AS-FE*A-1: AS-FE*

Ap

plica

tionSu

pp

ortF

unctio

ns

and

Se

rvice

Suppo

rtFun

ction s

ANI

S-1: S-CSC-FE S-4: SL-FES-15: GSC-FE

S-6: SAA-FES ervice

C o n tro l

F u n cti o

n s

S-14: MRB-FE

Note: * may include Authentication, Authorization, and Accounting

S-5: SUP-FE

A-S4A-S1 A-S2 A-S6A-S5A-S3

T-9: SG-FE

T ra n sp o r t

P ro cess in

g

F u n ct io n s

End User

Functions

A-U1 A-T1

UNI

S-13: MRC-FE

FEs of ASF&SSF


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provides control for services accessed by interacting with

the S-CSC-FE, GSC-FE, or end-user directly may reside either in the End-users home network or in a

Third Party location

may comprise the following Functional Entities:

Application Server FE, Application Gateway FE,

Application Service Coordination Manager FE, and Service

Switching Functional Entity

generate session control requests and dialogs on behalf of

users

FEs of ASF&SSF


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It executes service logicbased on the subscribers service profile

and/or on the terminal capability (device profile)

It acts via four session interaction models with respect to the S-CSC-FE

(terminating user agent/originating user agent/SIP proxy/Third-Party

Call Control)

It interacts with the AGC-FE through the S-CSC-FE to provide access

to the applications required to support the legacy terminal users

It interacts with the MRC-FE directly or via the S-CSC-FE in order to

control MRP-FE

Optionally, it interacts with the MRB-FE in order to attain an MRC-FE

resource.

It interacts with the End-User Functions via UNI to allow the end-users

to securely manage and configure data for their application services.

FEs of ASF&SSF


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Application Support (AS)-FE

supports generic application server functions including hosting andexecuting services

The examples of AS-FE are call feature application servers,

presence servers, various messaging servers, conferences servers,

home application servers, and so on

Application Gateway (APL-GW)-FE

serves as an interworking entity between the Application and the S-

CSC-FE of the Service stratum

APL-GW-FE provides a secure open interface for the Applications

to use the capabilities and resources of the NGN

The Applications connected to APL-GW-FE are usually realized by

OSA Application Servers

FEs of ASF&SSF


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Application Service Coordination Manager (APL-

SCM)-FEManages interactions between multiple application services (or

servers).

The functional entities of ASF&SSF might interwork with each

other via APL-SCM-FE to provide convergent services to the end

users.

Service Switching Functional Entity (SS)-FE

Provides access and interworking to a legacy IN SCP

For the IN services, the S-CSC-FE is connected through SS-FE to

SG-FE to interact with a legacy IN SCP It provides IN service switching functions including service trigger

detection, service filtering, call state management, etc and the

protocol adaptation function between INAP and SIP

FEs of ASF&SSF


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PSTN/ISDN Emulation Service Component


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PSTN/ISDN emulation provides the emulation of

PSTN/ISDN services for legacy terminal connected viaresidential gateways and access gateways to the NGN

PSTN/ISDN Emulation Architecture

Call Server based PIEA

IMS based PIEA

The two solutions are suitable for different network

situations, but can provide equal emulation services

Overview


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Call Server-Based PIEA


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Call Control Function (CCF)

Two party call control function and multi-party call control;Access to IN capabilities (e.g. passes events to the SSF);

Access to PSTN/ISDN supplementary services in SPF;

Access to applications (e.g. passes events to the SIF for AS-FE)

Access Gateway Control Function (AGCF)

controls one or more AMG-FEs to access PSTN or ISDN users

Media Resource Control Function (MRCF)

controls MRP-FE and allocates resources which are needed for

services such as streaming, announcements, and Interactive

Voice Response (IVR) support



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Media Gateway Control Function (MGCF)

controls the TMG-FE to allow interworking with thePSTN/ISDN

Routing Function (RF)

analysis user characteristics (such as called party number,

service profile) and chooses the route to the destination user

include a routing policy function (such as routing based onaverage load sharing or time of the day etc. ), and the routing

database

Service Provider Function (SPF)

provide the PSTN/ISDN supplementary services to user

also provides the services logic about PSTN/ISDN

supplementary services



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Service Switching Function (SSF)

provides to access to IN service logic programs hosted in legacyService Control Points (SCPs)

Signaling Interworking Function (SIF)

is associated with CCF and performs the function ofProtocol

adapter



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R l i hi b CS PIEA d NGN


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CS based PES function and

functional entity NGN functional entity

CCF S-CSC-FE

RFRF is particular to CS Based

PSTN/ISDN Service component

SIF NSIW-FE

SSF SS-FE

SPF AS-FE

AGCF AGC-FE

MRCF MRC-FE

MGCF MGC-FE

Legacy Terminal Terminal Functions

Relationship bet. CS-PIEA and NGN

IMS b d PIEA


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Legacy terminals and/or legacy access nodes are connected to VoIP

Gateways (VGW) or Access Media Gateways (AMG) using

standard interfaces.

AMG or VGW connect to the IMS based PES via either the P1

reference point or the Gm reference point.

The P1 reference point enables an AMG without session control

capabilities to be accommodated in the architecture whilst the Gm

reference point extends IMS session control to a VGW.

PSTN/ISDN islands may also be connected via trunking media

gateway, controlled using the Mn reference point

IMS-based PIEA

IMS b d PIEA


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IMS-based PIEA


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Next Step

NGN S i C t i NGN R2


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NGN Service Components in NGN R2

N F ti i NGN R2


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New Functions in NGN R2

IPTV A hit t l O i


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IPTV Architectural Overview

IPTV S i C t


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IPTV Service Component

IPTV Functions

End-user functions Application functions

Service control functions

Content delivery functions

Network functions

Management functions Content provider functions

Content provider functions

It provides the content and associated metadata to content preparation

functions, which contain content & metadata sources.

IPTV S i C t


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IPTV Service Component

Content delivery functions

It performs cache and storage functionalities and deliver the contentaccording to the request from the end-user functions.

Content distribution & location control functions

Handling interaction with the IPTV service control functional block

Controlling the distribution of content from the content preparation functions

to the content delivery & storage functions

Gathering the information regarding content delivery & storage functions

Performing the selection of a suitable content delivery & storage functions to

serve end-users functions according to some criteria

Content delivery & storage functions

It stores, caches, process the content under the control of content preparation

functions and distribute it among instances of content delivery & storagefunctions

It is responsible for delivering content to the content delivery client functions

using the network functions

MMCF T t C t


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MMCF Transport Component



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MMCF: Mobility Management Controk Function

MMCF describes an architecture of Mobility Managementand Control Functions for the NGN transport stratum,

which includes the definitions of the functional entities of

MMCF and the scenarios for interactions with the other

NGN functional components

Mobile Location Management Function (MLMF) are used to providelocation registration of the UE

Handover Control Functions (HCF) are used to provide session

continuity for ongoing sessions of the moving UE


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Appendix : ETRIs BcN Products

Key Result: Open API


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Key Result: Open API

Key Result: NCP & QSR Series


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Key Result: NCP & QSR Series

Key Result: PON based FTTH


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Key Result: PON-based FTTH

NGN Architecture & Framework-20081014

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