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Wireless Intelligent Network

The idea of WIN is to include IN concepts in IS-41, to

facilitate creation of new services in mobile systems.

WIN also adopts a number of IN concepts, such as the one

of Distributed Functional Plane and Functional Entities.WIN introduces the concept of Network Entities (NEs) and

their respective network reference model.

Multiple NE may be combined in one PE

NE are similar to PE in that a NE may contain several FE.

WIN does not want to recommend Physical Entities.

Network entities are still abstract with respect to PE and

can be implemented in several ways


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UCMs for WIN


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ORIGINATOR Root Map

Location

Update

Get Call No Answer

Get Call Answer

Call

Origination

FeatureActive Update

WIN Database

Management

WIN CNAP/RND

In5 Out5

In1

Out1

TERMINATOR

The originator can at any time perform a location update or a feature

activation. It can also originate a call. By intervention of the terminator,

the call is either answered or not.


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TERMINATOR Root MapLocation

Update

Get Call No Answer

Get Call Answer

Call

Origination

FeatureActive UpdateWIN Database

ManagementWIN

CNAP/RND

In5 Out5

In1

Out1

TERMINATOR

The originator can at any time perform a location update or a feature

activation. It can also originate a call. By intervention of the

terminator, the call is either answered or not.


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Example


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ACF

Authentication ControlCCF

Call ControlLRF

H

Location Registration-HLRLRF

V

Location Registration-VLRMACF

Mobile Station Access ControlRACF

Radio Access ControlRCF

Radio ControlRTF

Radio TerminalSCEF

Service Creation EnvironmentSCF

Service ControlSDF

Service DataSMAF

Service Management AccessSMF

Service ManagementSSF

Service SwitchingSRF

Specialized Resource

Managementrelated functions

Service ControlReated functions

Call Controlrelated functions

Wireless Access Mobilityrelated functions

SRF

SCF

LRF H

RTF

SSF

CCF

LRF V

RACF

MACF

RCF

SCEFSMAF SMF

To any FE

SDF

ACF

WIN Distributed Functional Model (DFM)


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Some important WIN Functional Entities

Call Control Function (CCF) provides call and service processing and

control.It is a function that handles all normal calls by providing the

process and the control of call/connection between network subscribers. It

also provides IN service access.

Service Switching Function (SSF) is associated with CCF and providesthe set of functions required for interaction between the CCF and a service

control function (SCF) by managing signaling between them.

Mobile Station Access Control Function (MACF) stores subscriber data

and dynamically associates system resources with a particular call (TLDN

assignment,see later).Location Registration Functions (LRFV and LRFH) provides the service

logic and service data function to manage the mobility aspects for wireless

users (VLR and HLR);


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Some important WIN Functional Entities

Service Control Function (SCF) commands call control functions in

the processing of WIN provided and custom service requests. It contains

all the logic and data required to provide a service. It may interact with

other functional entities to access additional logic or data.

Service Data Function (SDF) contains customer and network data for

real-time access by the SCF in the execution of WIN-provided services

specialized Resource Function (SRF) provides the specialized

resources required for the execution of WIN-provided services (e.g.,

digit receivers, announcements, conference bridges, etc.).


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WIN Network Reference Model

(NRM)

Cell

IP SCP

BS

MS

AC

SN

EIR

HLR

MC SME

External Networks(PSTN, ISDN, )

MSCVLR

AC: Authentication Center

BS: Base Station

EIR: Equipment IdentityRegister

HLR: Home LocationRegister

IP: Intelligent Peripheral

MC: Message Center

MS: Mobile Station

MSC: MobileSwitching Center

SCP: ServiceControl Point

SME: ShortMessage Entity

SN: Service Node

VLR: VisitorLocation Register


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Some important WIN Network Entities

Mobile Station (MS) interface equipment used to terminate the radio

path at the user side. It provides the capabilities to access network

services by the user.

Mobile Switching Center (MSC) constitutes the interface for user

traffic between the cellular network and other public switched networks,

or other MSCs in the same or other cellular networks

Home Location Register (HLR) location register to which a user

identity is assigned for record purposes such as subscriber information

(e.g., profile information, current location, authorization period, etc.)

Visitor Location Register (VLR) retrieves information for handling of

calls to or from a visiting subscriberService Control Point (SCP) acts as a real-time database and transaction

processing system to provide service control and service data

functionality


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Some important WIN Network Entities

Intelligent Peripheral (IP) performs specialized resource functions such as

playing announcements, collecting digits, performing speech-to-text or text-

to-speech conversion, recording and storing voice messages, facsimile

services, data services, and so forth.

Authentication Center (AC) manages the authentication informationrelated to the MS.

Service Node (SN) This is to accommodate implementers that for any

reason do not want to implement MSC, SCP, IP.

It is superfluous if MSC, SCP, IP are properly implemented


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WIN Incoming Call Screening Service

Provides for

alternate routing,

blocking, or

allowing of specified incoming calls

Incoming Call Termination Treatment

Terminated normally to the subscriber with normal alerting

Terminated normally to the subscriber with distinctive alerting

Forwarded to another number

Forwarded to voice mail

Routed to subscriber-specific announcement

Blocked


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Incoming Call Screening (ICS) Scenario wthUse Case Maps :

The start point (Incoming Call) leads to the ICS stub, whichgives one of five possible outcomes:

Call Setup (with normal or distinctive alerting)

Call Forwarded Voicemail Announcement Call Blocked


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Incoming Call Screening (ICS)

ICS can use a number of screening factors to determine which termination

action is appropriate.

These factors are related to calling party characteristics:

number, identity speech or voice-based identification procedure password

They can also be related to called party characteristics:

location status

Or to other factors such as: date time


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WIN Feature:CNAP, Call Name Presentation

Calling Name Presentation (CNAP) provides the name identification of the originating

party (e.g. personal name, company name, restricted, not available) to the

terminating subscriber.

The Calling Name Information (CNA)

may be provided explicitly to the terminating network from the originating network (passed

through SS7 as a parm)

or it may be derived from the Calling Number Information (CNI) which is generally

provided to the terminating network from the originating network.

When the CNAP service is invoked, the terminating network shall send the calling

name information (if it can find it and it is not restricted) to the terminal during alerting

on incoming calls. The terminal shall display the calling name information or other

appropriate message

RND (Redirecting Name Delivery) option: in case call was forwarded, RND provides

the name of the last redirecting party as well as the name of the originating party


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CNAP Typical Scenario

Serving

MSC

HLR SCP

Incoming

Call

Location

RequestRoute

Request

If Called MSfound and not

busy, return

loc result with

TLDN

Return

loc result,TLDN

Service

Request with

calling #

Return result

with display

text

Home

MSC

Home of

terminating

party

Term. party

is roaming

Call routed by using

TLDN. Caller # alsodelivered.

voice path

1

2

4

3

6 7

5


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A terminating MSC receives an incoming call indication and sends a

LOCATION REQ to the HLR of the called subscriber. This one is roaming.

The HLR determines the current serving LA for the called MS and sends a

ROUTE REQ to its MS (through the corresponding serving VLR) forobtaining a Temporary Local Directory Number (TLDN).

The MACF functional entity inside the serving MSC assigns a TLDN to the

destination device and returns it to HLR (through the VLR).

HLR returns routing info, TLDN to Home MSC


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Home MSC uses TLDN to route call to serving MSC. A direct link

between the two MSCs, to the terminating device is now established.

Serving MSC encounters trigger denoting CNAP service for MS.

It queries the SCP which is supposed to have some way to find the name of

the user

(this could be not so simple, but is not discussed in the standard).

SCP returns info to serving MSC, which is now able to provide the name

info to the called MS


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Conclusions on WIN

WIN is a valuable attempt to merge IN and mobility concepts

shares limitations of IN on how features can be constructed


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S R bi d k P t EI200117185

Thank You

en intelligent network

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