2 UMTS - Service & Management Aspects - ST3...

UMTS Basics, Version 3.0

T.O.P. BusinessInteractive GmbH

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2 UMTS - Service & Management Aspects



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2.1 Services ........................................................................................3 2.1.1 Networks and Services .............................................................4 2.1.2 QoS Classification.....................................................................5 2.1.3 Service Structure (1/2) ..............................................................6 2.1.3 Service Structure (1/2) ..............................................................7 2.1.4 Virtual Home Environment (1/3) ...............................................8 2.1.4 Virtual Home Environment (2/3) ...............................................9 2.1.4 Virtual Home Environment (3/3) .............................................10 2.1.5 UMTS Service Examples (1/3).................................................11 2.1.5 UMTS Service Examples (2/3).................................................12 2.1.5 UMTS Service Examples (3/3).................................................13 2.2.1 Demands on Service Management (1/2) ................................14 2.2.1 Demands on Service Management (2/2) ................................15 2.2.2 Application and Service Download (1/2)................................16 2.2.2 Application and Service Download (2/2)................................17 2.2.3 Roaming...................................................................................18 2.2.4 National Roaming (1/2)............................................................19 2.2.4 National Roaming (1/2)............................................................20 2.2.5 UMTS-GSM-Roaming (1/2) ......................................................21 2.2.5 UMTS-GSM-Roaming (2/2) ......................................................22 2.2.6 Smart Antennas.......................................................................23



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2.1 Services

The data rates that need to be transmitted via the air interface vary depending on the application. Speech, e-mail and SMS (Short-Message-Service), as well as data base backed information services are typical low-level applications. These comparatively simple services have a data rate of approximately 10 kbit /s. As a 2nd generation standard, GSM has been designed mainly for speech transmission. This standard is not very suitable for broadband services. Therefore it is very important to offer the subscribers a new technology which makes it possible to transmit higher data rates and thus allows high-level services such as - telebanking - electronic newspapers - teleshopping - video telephony - video conferencing



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2.1.1 Networks and Services

Fundamentally, the UMTS services can be divided into two groups: - the GSM standard services, and - other services using the new possibilities of the UMTS network The UMTS air interface will improve the quality of these services. Higher data rates will improve the new e-mail and internet services. IN services, i.e. services provided by the Intelligent Network, are used by both the GSM and the UMTS network. The existing CAMEL protocol (Customized Applications for Mobile Network Enhanced Logic) will help to increase the services' efficiency. Depending on the type of User Equipment, these networks offer services like normal voice calls, fast data download, internet-browsing, or sending pictures and videos.



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2.1.2 QoS Classification

The particular traffic classes differ in the delay the individual services allow: - The Conversational Class is very delay sensitive. This includes services such as speech and video telefony, or video games. - The Streaming Class is slightly less delay sensitive. What is important is that the different information units such as video and audio are transferred as synchronously as possible. One example would be video streaming on demand. - In the interactive class, which includes web-browsing or interactive games, data integrity is more important than delay. - The Background Class has no specified delays. Data integrity is also very important. An example would be the download of e-mails in the background.



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2.1.3 Service Structure (1/2)

This is what a UMTS-based service structure could look like: A Service-Broker provides mobile services for the subscriber as part of the customer's Home Environment. The service management charges the subscriber for these services, in cooperation with the network operators, the content provider and the value-added service provider. The Access Network Operator provides the network access for the customer. The provider and the network operator settle accounts internally with the service management, so that the customer receives bills that are easy to understand.



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2.1.3 Service Structure (1/2)

UMTS creates an Open Service Architecture. This means that the physical network provides open interfaces which are then used by service providers offering their services independent of the network. The idea behind this structure is to separate the network from the services as far as possible. A service is no longer connected to a specific physical network. "Virtual Network operators", which do not have their own physical network, can supply services to their customers. This means that the services can exceed the limits of the physical network.



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2.1.4 Virtual Home Environment (1/3)

A feature that particularly complies with the need for individualization is the Virtual Home Environment, or VHE. It allows the subscribers' access to a whole range of services, independent of their present location. This service is network independent and can be accessed at any time. It is also referred to as service roaming. Customers will be able to find their usual working environment. The key to VHE lies in individual services based on a personalized interface. Thus the subscriber is virtually moving within his home network, but is physically roaming in another network.



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The Home Environment controls the mobile services and puts them at the subscriber's disposal. The subscriber can use a multitude of personalized services. This Personal Service Environment combines information about the service and subscriber-specific information from the subscribers' profiles. The subscriber can have as many profiles as he likes, e.g. a business profile, a profile for the weekend, and one for the holidays. The Home Environment may also include Value Added Service Providers (HE-VASP). These can provide further services.



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The aim is to enable the subscribers to use his services anywhere, without having to make concessions as regards everyday useablility. These could be services like: - Call Completion, i.e. the calling party is notified when an unreachable party becomes reachable again. - Multimedia Conference, i.e. subscriber groups can join video or audio conferences, with a variety of feasible service features: some of the participants could communicate with each other in private, or the chairman of a conference could be granted control functions. - Location Dependent Information Broadcast Service, which, for example, could offer local weather reports or - Personal Travelling Assistant, which provides up-to-the-minute travel information about the country in question.



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2.1.5 UMTS Service Examples (1/3)

All the known services which are already supported by GSM can also be provided by UMTS. The added value comes from the higher bandwidth of UMTS. Possible services are: - online translations - location dependent services - video telephony/ video conferencing - universal SIM & credit card functions - video on demand - online libraries / online literature - online shopping - online ticket reservation



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Particular importance must be attached to high-bitrate interactive, streaming- and localization services: - 1st example: video conferencing. The interactive video connections will be run mainly within the UMTS radio network. Special gateways, however, will enable connections to existing ISDN videophones and video conferencing systems. - 2nd example: mobile pay-TV based on new business models. Pay-TV transmitters offer a media mix together with their mobile UMTS services; it will be possible to combine mobile UMTS content with classical web or print contents.



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The 3rd example is mobile navigation services. Relatively precise localization of mobile phones is already possible. To this end, the network analyzes and evaluates the signal power reaching the Node Bs, and uses it to calculate the equipment's current position. In "push-mode", the subscriber can send location dependent information; in "pull-mode", it is possible, for example, to locate emergency calls. This mode also includes the location based services, which e.g. find the next petrol station, nearby hotels or restaurants. The information to be downloaded can be individualized for each subscriber. The current UMTS specification is based on statistical evaluations and provides the localization of a User Equipment with a precision of up to 50 metres.



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2.2.1 Demands on Service Management (1/2)

For several reasons, better customer service and cost reduction are the principal focus of efficient service management: this includes - providing sophisticated communication services - extending the clientele to a wider range than merely trade customers - separating the home environment and the network offering the service - introducing simple billing structures for a whole range of services.



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2.2.1 Demands on Service Management (2/2)

For efficient service management, UMTS will offer an open, supplier independent standard. The service should be able to - support VHE systems - manage subscriber profiles - support portable call numbers between the various network operators - set up as well as control services and their capacities, and make subscription possible. - enable simple billing systems - guarantee a particular service quality



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2.2.2 Application and Service Download (1/2)

In the computer field, most subscribers are used to making regular updates to adapt the power of their multimedia terminals to the current standards. Users have become well accustomed to downloading new plug-in software for new functions and content. This standard, which originated in the Internet, is now to be transferred to mobile communications.



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2.2.2 Application and Service Download (2/2)

This download concept is closely related to the newly developed SIM standard (USIM). Both terminal and USIM combine to make sure that plug-in software can be downloaded, saved and run. In ideal circumstances, the new software is saved on the USIM. This is the reason why the user finds his usual working environment even when using new terminals.



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2.2.3 Roaming

Within the UMTS market, it is basically possible to either achieve roaming only between the third generation network operators, or to include the 2nd generation operators as well. The second possibility will probably become established. Both possibilities, however, should offer national as well as international roaming. IMT-2000 provides international roaming as a standard, so the integration of UMTS systems takes place on a global basis.



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2.2.4 National Roaming (1/2)

Efficient, long-term competition can best be guaranteed if it develops within both the field of technical infrastructure and the mobile services field. This is the only way the customers can profit from low prices and enhanced services. The customers must be able to choose between the various network operators. Only if a large number of suppliers competes for customers can continuous progress be guaranteed. Continuous progress and development is necessary for the companies' long term survival. Tieing the customers to a specific provider with restrictive contracts will lead into an impasse situation.



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2.2.4 National Roaming (1/2)

National roaming guarantees that the users can send and receive from any place, independent of their suppliers' network coverage. The way to telecommunication market can thus be smoothed for new network operators, even if they do not have a mobile infrastructure at their disposal. The result of this would be an optimum basic supply for the subscribers.



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2.2.5 UMTS-GSM-Roaming (1/2)

Another possibility is to make roaming between UMTS- and GSM-based networks possible. This will be achieved in two respects: 1. Roaming between mobile UMTS based applications and the GSM network 2. SIM card roaming The first advantage is that new UMTS network operators will be offered easier access to the telecommunications market. The customers can rely on complete network coverage from the start, although not every service will be available everywhere. Additionally, the customers will profit from ease of use: they will be able to use the same SIM card in both networks. The subscriber needs either two different mobiles, or a dual mode (UMTS-GSM) User Equipment.



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2.2.5 UMTS-GSM-Roaming (2/2)

Handover, i.e. handing over the connection from one network to the other, should be possible in both directions: 1. From a UMTS network to a GSM network 2. From a GSM network to a UMTS network When a handover from UMTS to GSM is performed, the services are taken over by the GSM network as far as possible. Essentially, enough resources must be provided, to guarantee a minimum service quality even under a GSM system. Not all services can be handed over to GSM/GPRS. This particularly concerns the multimedia services.



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2.2.6 Smart Antennas

Smart antennas react intelligently to the radio signals they receive from the individual subscribers, by continuously adapting their directional patterns to the subscribers' location. This will optimize the transmitted and the received signals for a smooth reception. The advantages are: - an improvement in network coverage and network capacity through the reduction of interference between adjacent User Equipments. - a more precise determination of the user's location. This allows the introduction of more sophisticated Location Based Services (LBS). Smart antennas are the key to a long-term increase in UMTS capacities.

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