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Technical seminar-2004
S.Rabindra kumar Patro EI200117185
Technical SeminarOn
Description of Wireless intelligent network with the use of case Maps
Under The guidance of
N.Srinivasu
ByS.Rabindra kumar patro
Roll No. :200117185Branch: EI
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Technical seminar-2004
S.Rabindra kumar Patro EI200117185
Wireless Intelligent NetworkThe 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 PENE 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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Technical seminar-2004
S.Rabindra kumar Patro EI200117185
UCMs for WIN
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Technical seminar-2004
S.Rabindra kumar Patro EI200117185
ORIGINATOR Root MapLocation Update
Get Call No Answer
Get Call Answer
Call Origination
Feature Active Update
WIN Database Management
WIN CNAP/RND
In5 Out5
In1
Out1TERMINATOR
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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Technical seminar-2004
S.Rabindra kumar Patro EI200117185
TERMINATOR Root MapLocation Update
Get Call No Answer
Get Call Answer
Call Origination
Feature Active UpdateWIN Database ManagementWIN CNAP/RND
In5 Out5
In1
Out1TERMINATOR
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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Technical seminar-2004
S.Rabindra kumar Patro EI200117185
Example
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Technical seminar-2004
S.Rabindra kumar Patro EI200117185
ACFAuthentication ControlCCFCall ControlLRFHLocation Registration-HLRLRFVLocation Registration-VLRMACFMobile Station Access ControlRACFRadio Access ControlRCFRadio ControlRTFRadio TerminalSCEFService Creation EnvironmentSCFService ControlSDFService DataSMAFService Management AccessSMFService ManagementSSFService SwitchingSRFSpecialized Resource
Management related functions
Service Control Reated functions
Call Control related functions
Wireless Access Mobility related 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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Technical seminar-2004
S.Rabindra kumar Patro EI200117185
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 provides the 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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Technical seminar-2004
S.Rabindra kumar Patro EI200117185
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 servicesspecialized 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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Technical seminar-2004
S.Rabindra kumar Patro EI200117185
WIN Network Reference Model (NRM)
Cell
IP SCP
BS
MS
AC
SNEIR
HLR
MC SME
External Networks(PSTN, ISDN, …)
MSCVLR
AC: Authentication Center
BS: Base Station
EIR: Equipment Identity Register
HLR: Home Location Register
IP: Intelligent Peripheral
MC: Message Center
MS: Mobile Station
MSC: Mobile Switching Center
SCP: Service Control Point
SME: Short Message Entity
SN: Service Node
VLR: Visitor Location Register
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Technical seminar-2004
S.Rabindra kumar Patro EI200117185
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 networksHome 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
Nati
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Technical seminar-2004
S.Rabindra kumar Patro EI200117185
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 information related 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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Technical seminar-2004
S.Rabindra kumar Patro EI200117185
WIN Incoming Call Screening Service
Provides for alternate routing,
blocking, or
allowing of specified incoming calls
Incoming Call Termination TreatmentTerminated 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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Technical seminar-2004
S.Rabindra kumar Patro EI200117185
Incoming Call Screening (ICS) Scenario wthUse Case Maps :
The start point (Incoming Call) leads to the ICS stub, which gives one of five possible outcomes:
• Call Setup (with normal or distinctive alerting)• Call Forwarded • Voicemail • Announcement• Call Blocked
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Technical seminar-2004
S.Rabindra kumar Patro EI200117185
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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Technical seminar-2004
S.Rabindra kumar Patro EI200117185
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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Technical seminar-2004
S.Rabindra kumar Patro EI200117185
CNAP Typical Scenario
ServingMSC
HLR SCP
Incoming Call
LocationRequest
RouteRequest
If Called MS found and not busy, return loc result with TLDN
Return loc result, TLDN
ServiceRequest with calling #
Return result with display text
HomeMSC
Home of terminating party
Term. party is roaming
Call routed by using TLDN. Caller # also delivered.
voice path
1
2
4
3
6 7
5
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Technical seminar-2004
S.Rabindra kumar Patro EI200117185
CNAP Typical Scenario
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) for obtaining 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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Technical seminar-2004
S.Rabindra kumar Patro EI200117185
CNAP Typical ScenarioHome 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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Technical seminar-2004
S.Rabindra kumar Patro EI200117185
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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Technical seminar-2004
S.Rabindra kumar Patro EI200117185
Thank You