22-08-2013, 02:34 PM
Wireless Intelligent Networks
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Abstract
Communication methods are essential to enable the continual expansion of the technological society in which we live. They enable people to exchange ideas, opinions and synchronize all interactions between themselves and others. Telephony is still the predominant method of communication although new techniques, such as electronic mail and mobile communications are becoming more and more popular. Network users are requesting increasingly complex services which cannot be effectively supported by existing network architectures. Also, there is a desire to share data, distribute application processing among network elements and an increasing demand for more sophisticated telecommunications services. All of these factors have led to the evolution of new networking architectures.
INTRODUCTION:
A particular architecture which has evolved is the Intelligent Network (IN), in which services are provided independently of the bearer networks or equipment vendors. The IN is essentially an architecture which separates the service logic from the telephone exchanges, enabling the establishment of an open platform for uniform service creation, implementation and management. It enables advanced customer orientated services to be rapidly and cost effectively introduced.
The Existing Telecommunications System:
In the traditional Plain Old Telephone Service (POTS), the switching systems (known as 'switches') perform the basic call processing. Each supplementary service is a non-reusable software entity that modifies this basic process in the switches. The switching network typically consists of a hierarchy of switches, e.g. a local exchange level, an intermediate exchange level and a transit exchange level.
Standards for Intelligent Networks
In 1989, the International Standardisation Union (ITU) and the European Telecommunications Standardisation Institute (ETSI) began work on international IN standards. A phase structured development process was started, which aimed to completely define the target IN architecture. Each phase of development intended to define a particular set of IN capabilities, known as a capability set (CS). This refers to a set of services and service features that can be constructed, given the available functionality at that particular evolution phase of the IN.
The IN Conceptual Model (INCM)
The INCM was developed to provide a framework for the design and description of each capability set and the target IN architecture. As a contained model, it completely captures the whole engineering process of the IN. The INCM is structured into four planes as follows:
1. service plane
2. global functional plane
3. distributed functional plane
4. physical plane
The upper two planes focus on service creation and implementation, whereas the lower two planes addressing the physical IN architecture.
An Example of an IN Service and its Implementation
One particular service defined within capability set 1 is the card calling service. This offers the possibility of the phone call being charged to the account of the user who makes the call, rather than charging the user for using a specific telephone line. Hence, the call can be established without charging any of the involved in the call.
This service is also known as automatic alternative billing, account card calling, virtual card calling or credit card calling service. The distinction is made depending on whether a real physical card is being used (thus requiring a card reading terminal), or whether a 'virtual card is being used. (requiring the user to dial an account number). All of these services are dependent on a white list. This list resides in a database and contains information on the particular services users are subscribed to and related billing information.
WIRELESS INTELLIGENT NETWORKING:
(WIN) is a concept being developed by the Telecommunications Industry Association (TIA) Standards Committee TR45.2. The charter of this committee is to drive intelligent network (IN) capabilities, based on interim standard (IS)-41, into wireless networks. IS-41 is a standard currently being embraced by wireless providers because it facilitates roaming. Basing WIN standards on this protocol enables a graceful evolution to an IN without making current network infrastructure obsolete.
CONCLUSION
The first phase of WIN standards was published in 1999 and established the fundamental call models and operations required to support this flexible service architecture. Many service providers currently implement WIN Phase 1 in their networks. Examples of WIN Phase 1 services are calling name presentation and restriction, call screening, and voice-control services. Nearing completion are WIN Phase-2 standards that provide both additional service capabilities for wireless operators as well as greater harmonization of network capabilities and operations with emerging third-generation network requirements. WIN Phase 2 includes MSC triggers for an IN prepaid solution.
WIN Phase 3 is currently in requirements review by the WIN standards group. This phase incorporates enhancements to support location-based services.
[attachment=57351]
Abstract
Communication methods are essential to enable the continual expansion of the technological society in which we live. They enable people to exchange ideas, opinions and synchronize all interactions between themselves and others. Telephony is still the predominant method of communication although new techniques, such as electronic mail and mobile communications are becoming more and more popular. Network users are requesting increasingly complex services which cannot be effectively supported by existing network architectures. Also, there is a desire to share data, distribute application processing among network elements and an increasing demand for more sophisticated telecommunications services. All of these factors have led to the evolution of new networking architectures.
INTRODUCTION:
A particular architecture which has evolved is the Intelligent Network (IN), in which services are provided independently of the bearer networks or equipment vendors. The IN is essentially an architecture which separates the service logic from the telephone exchanges, enabling the establishment of an open platform for uniform service creation, implementation and management. It enables advanced customer orientated services to be rapidly and cost effectively introduced.
The Existing Telecommunications System:
In the traditional Plain Old Telephone Service (POTS), the switching systems (known as 'switches') perform the basic call processing. Each supplementary service is a non-reusable software entity that modifies this basic process in the switches. The switching network typically consists of a hierarchy of switches, e.g. a local exchange level, an intermediate exchange level and a transit exchange level.
Standards for Intelligent Networks
In 1989, the International Standardisation Union (ITU) and the European Telecommunications Standardisation Institute (ETSI) began work on international IN standards. A phase structured development process was started, which aimed to completely define the target IN architecture. Each phase of development intended to define a particular set of IN capabilities, known as a capability set (CS). This refers to a set of services and service features that can be constructed, given the available functionality at that particular evolution phase of the IN.
The IN Conceptual Model (INCM)
The INCM was developed to provide a framework for the design and description of each capability set and the target IN architecture. As a contained model, it completely captures the whole engineering process of the IN. The INCM is structured into four planes as follows:
1. service plane
2. global functional plane
3. distributed functional plane
4. physical plane
The upper two planes focus on service creation and implementation, whereas the lower two planes addressing the physical IN architecture.
An Example of an IN Service and its Implementation
One particular service defined within capability set 1 is the card calling service. This offers the possibility of the phone call being charged to the account of the user who makes the call, rather than charging the user for using a specific telephone line. Hence, the call can be established without charging any of the involved in the call.
This service is also known as automatic alternative billing, account card calling, virtual card calling or credit card calling service. The distinction is made depending on whether a real physical card is being used (thus requiring a card reading terminal), or whether a 'virtual card is being used. (requiring the user to dial an account number). All of these services are dependent on a white list. This list resides in a database and contains information on the particular services users are subscribed to and related billing information.
WIRELESS INTELLIGENT NETWORKING:
(WIN) is a concept being developed by the Telecommunications Industry Association (TIA) Standards Committee TR45.2. The charter of this committee is to drive intelligent network (IN) capabilities, based on interim standard (IS)-41, into wireless networks. IS-41 is a standard currently being embraced by wireless providers because it facilitates roaming. Basing WIN standards on this protocol enables a graceful evolution to an IN without making current network infrastructure obsolete.
CONCLUSION
The first phase of WIN standards was published in 1999 and established the fundamental call models and operations required to support this flexible service architecture. Many service providers currently implement WIN Phase 1 in their networks. Examples of WIN Phase 1 services are calling name presentation and restriction, call screening, and voice-control services. Nearing completion are WIN Phase-2 standards that provide both additional service capabilities for wireless operators as well as greater harmonization of network capabilities and operations with emerging third-generation network requirements. WIN Phase 2 includes MSC triggers for an IN prepaid solution.
WIN Phase 3 is currently in requirements review by the WIN standards group. This phase incorporates enhancements to support location-based services.