Project

Inte llige nt Ne tworks

Park Jung Wan

([email protected])

Kang Tai Hun

([email protected])

< Telephone & Internet Telephony Networks >

< Telephone & Internet Telephony Networks > 2 /17

Contents

Introduction

Related standard

Operation procedure

Technical issues

The method of performance evaluations of the systems

Others

< Telephone & Internet Telephony Networks > 3 /17

Introduction

System which is attractive to subscriber and create new earnings can be introduced quickly? Smallest change of network?Adaptive System to subscriber’s taste which is changed?

There is no solution, because network is composed of MSC which is difficult to be changed quicklySurvival solution in extreme competition circumstance is quick and adaptive service to subscriberService network delivered easily is needed

Intelligent Network Introduction!

Specification have started from early in 1990’Wired communication network is first adaptedIntroduction in Korea

- KT→SST→SKT→KTF→HST→LGT

BSC MSC

BTS

MS

SC

HLR

STP

SSP

IP

SMP

SCPNo.7

No.7/ISUP

No.7/ISUP

No.7

No.7

TCP/IP

TCP/IPIntell igent Network

• SMP: Service Management Point • SCP: Service Control Point • IP: Intelligent Peripheral • SC: Subscriber Center • BTS: Base station Transceiver Subsystem • BSC: Base Station Controller • STP: Signal Transfer Point • HLR: Home Location Register • SSP: Service Switching Point • MSC: Main Switching Center • MS: Mobile Station • ISUP: ISDN User Part

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Related Standard (1)

IN Standard IN Standard HistoryHistory

EuropeEuropeSMG GSM MAP

NA6 INAP

ITU-TITU-TSG 11/6 IN CS-1

SG 11/8 FPLMTS

NorthNorthAmericaAmerica

SG 11/6 IN CS-1

SG 11/8 IS-41

CTM INAP+

UMTS CAMEL

IN CS-2

ANSI IN Phase 1

WIN Phase 1

IN CS-3

ANSI IN Phase x

WIN Phase x

CellularCellular PCS/PCNPCS/PCN 3G3G• GSM: Global System for Mobile communication • MAP: Mobile Application Part • Intelligent Network Application Protocol • CS: Capability Set • UMTS: Universal Mobile Telecommunication System• IN: Intelligent Network • ANSI: American National Standard Institute • IS: International Standard • FPLMTS: Future Public Land Mobile Telecommunication System • WIN: Wireless Intelligent Network • PCS: Personal Communication Service • CAMEL: Customized Applications for Mobile network Enhanced Logic

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Related Standard (2)

Adapted IN Adapted IN StandardStandard

Release 1999Phase 3 : 3G TS 22.078, 23.078, 29.078

Phase 1 : TIA/EIA/IS-771TIA/EIA/IS-826, IS-848

IN CS-1 (Q. 121x)IN CS-2 (Q. 122x)

CAMELCAMELWINWINITU-TITU-T

Dual Stack Dual Stack ArchitectureArchitecture

SC

SMP

SCP

IPSSPMSC

SMSC

PDSNAAA

HLR HLR

IMX

SMSC

SGSN GGSN

No.7 / ISUPNo.7 / ISUPNo.7 / ISUP

WIN(No.7) WIN(No.7)

(No.7) 3G MAP (No.7)3G MAP (No.7)

CAP (No.7)

WIN(No.7) WIN / CAP (No.7)

TCP/IP

TCP/IP

TCP/IP TCP/IP

TCP/IP

TCP/IPTCP/IP

TCP/IP TCP/IP

Dual Stack IN

2G 3G

• PDSN: Packet Data Serving Node • AAA: Authentication Authorization Accounting • SMSC: Short Message Service Center • SGSN: Serving GPRS Support Node • GGSN: Gateway GPRS Support Node • IMX: IMT2000 Mobile Exchange • CA : CAMEL Application Part

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Operation Procedure (1)

IN Service RegistrationIN Service Registration Creation of subscriber information in HLR, SMP(SCP) DB

MS Location RegistrationMS Location RegistrationLocation of MS is registration in HLR and Intelligent Service

Information of subscriber is delivered from HLR to VLR

(1)

(2)

(2)

(4)

(1) (2)

BTS BSC MSC/VLR STP

HLR

Service registration request

SC

SMP

HLR

SCP

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Operation Procedure (2)

IN Service OriginationIN Service Origination for example ) Prepaid voice call origination

MSC/SSP

IP

SCP

Origination MS

Announcement Delivering and connection & release to gather DTMF

Command achievement result

Resource control command

Call control command

Triggering and Event report

(1) Call of prepaid subscriber is triggering to SCP

(2) SCP authenticates intelligent subscriber

(3) Deliver announcement prepaid remainder to MS

(4) SCP commands progressing call routing to termination MSC will page & connect to termination MS

(5) If MS requests to release call, MSC reports call release to SCP

(6) SCP account and update DB (charge deduction in prepaid remainder for this call)

Termination MS MSC

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Technical issues

Security issue

Evolution toward IP network

Cost effective

Flexibility

Security problem

: easy to access system

Load balancing issue

SCP A : not available

↓

SCP B : single SCP

Dual SCP (active & active)

DB sync.

SCP A SCP B

DB

No. 7

IP

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The method of performance evaluations of the systems

“Performance evaluation of AIN (Advanced Intelligent Networks) supporting mobile communications”

(Y.W Chung, M.Y Chung, Y,H Kwon, and D.K Sung, IEEE, 1997)

AIN architectures supporting mobile communication Functional reference model AIN architecture scenario

Signaling procedures

Performance evaluation Signaling load Processing load Processing delay

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AIN architectures supporting mobile communication (1)

Functional reference model

Functional (logical) entity

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AIN architectures supporting mobile communication (2)

AIN architecture scenario

Functional (logical) entity → physical entity

Comparison of network architectures

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Signaling procedures

Mobility related

Location update (Intra-SSP, Inter-SSP)

Handoff (Intra-BSC, Inter-BSC, Inter-SSP)

Call related

Call origination

Call termination

Call release

UPT outgoing and incoming calls

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Performance evaluation (1)

Signaling load

Comparison of signaling load on various links (messages / sec)

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Performance evaluation (2)

Processing load

Comparison of processing load on various physical entities (messages / sec)

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Performance evaluation (3)

Processing delay

Assumption• Each functional entity is simply modeled by an M/M/1 queueing model.

• The propagation delay on each signaling link is ignored.

Processing delay in the case of intra-SSP location update

Network 1,3,5 Network 2,4

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Others : OSA (Open Service Architecture) / Parlay (1)

Current problem Current problem Deploying new ServiceDeploying new Service

Each new service accesses systems in it’s own way

It makes systems complex and spends high cost & much time

Especially, if M&A occurs, this architecture

gives much load to operator

SDP IntroductioIntroductio

nn

Each new service accesses systems in a standard way

Systems are connected into standard SDP

System can be changed without affecting services that use the system

Time & Cost Effective !!Time & Cost Effective !!

Improving way using SDPImproving way using SDP

• SDP: Service Delivery Platform

< Telephone & Internet Telephony Networks > 17 /17

Others : OSA / Parlay (2)

OSA/Parlay is the common term used to refer to an industry-OSA/Parlay is the common term used to refer to an industry-standard that underpins many SDPs now in development.standard that underpins many SDPs now in development.

The OSA/Parlay standard defines an API that aids the rapid The OSA/Parlay standard defines an API that aids the rapid creation of telecommunications services by enabling IT creation of telecommunications services by enabling IT application developers to create telecom servicesapplication developers to create telecom services

The Parlay APIs – What do they offer?The Parlay APIs – What do they offer?

Connectivity Connectivity Management Management

Account Account ManagementManagement

Data Session Data Session ControlControl

FrameworkFrameworkCommon Data Common Data

DefinitionsDefinitionsGeneralGeneral

Content based Content based ChargingCharging

MessagingMessagingTerminalTerminalPolicy Policy

managementmanagement

Availability Availability management management and presenceand presence

MobilityMobilityUser User

InteractionInteractionCall ControlCall Control

• API: Application Programming Interface