A method to provide a service, a service provider realizing such a method and a universal personal telecommunication network including such a service provider

Abstract: The invention relates to a method to provide a service to a user of a subscriber in a universal personal telecommunication network. The method includes the step of requesting access by the user to the telecommunication network via a terminal and via an access subnetwork of the telecommunication network in order to provide thereby an access request. The method further includes the step of providing by a notifying service provider to the user via the access subnetwork, a notification which includes a capability to accept a service of an offered service provider. In the event when the notifying service provider is a home service provider of the user, the offered service provider is different of the notifying service provider. The offered service is a virtual visited environment similar to a virtual home environment but identified by the user as visitor and the offered service provider.

Description: The present invention relates to a method to provide a service as described in the preamble of claim 1, a service provider apparatus realizing such a method as described in the preamble of claim 2 and a universal personal telecommunication network including such a service provider apparatus as described in the preamble of claim 9. Such service provider apparatus is already known in the art, e.g. from the European Telecommunication Standards Institute Standard at the internet site with the address : http://docbase.etsi.fr/Tech-org/smg/Document/smg1/SMG1-UMTS-Specifcations/NEW/ with reference TR 22.70 V3.0.0 (1998-03) entitled "Universal Mobile Telecommunication System (UMTS); Service Aspects; Virtual Home Environment (VHE) (UMTS 22.70 version 3.0.0). This document describes the Virtual Home Environment concept and its constituent parts. A concept called service environment is introduced to describe how virtual home environment services will be made available on demand to a user traveling with its terminal in any location. The concept of virtual home terminal is discussed in order to describe how a virtual home environment can be made available in any terminal. The following paragraphs are describing a summary of this document, in order to provide an indication of the background art, which can be regarded as useful for understanding the invention. A virtual home environment is defined as a system concept for personalized service portability, across network boundaries and between terminals. The concept of the virtual home environment is such that universal personal telecommunication system UMTS users are consistently presented with the same personalized features in whatever network and whatever terminal, wherever the user may be located. The exact configuration available to a user at any instant will be dependent upon the capabilities of the user service identity module, called hereafter USIM, terminal equipment and network currently being used or on the subscription restriction. Such a USIM is a unique personal identification of a user to a subscriber and a service provider. A user with its USIM in another terminal, receives maximum capability provided depending on the limitation of the terminal. A virtual home environment is created by a combination of the capabilities located in the service provider apparatus, network operators and the terminal equipment. In effect, the virtual home environment of a user is considered as a distributed user profile. The profile outline is owned by the service provider, and it is distributed between the terminal equipment, personal identification card, network operator and service provider. This means that to the service provider apparatus, the virtual home environment appears as a list of capabilities, preferences and settings appropriate to the user and its subscriber. It is also described in the above cited document that a commercial relationship is required between a service provider and a network operator, either directly or indirectly. The components involved in realization of a virtual home environment of a user are the following : one user, one service provider apparatus, one or more value added service providers i.e. content providers of services such as video on demand or entertainment information provider, one USIM i.e. unique personal identification of the user, one IC card, one subscriber, one subscription of the subscriber to the above mentioned service provider, one or more terminals, one or more network operators. A user is associated with one service provider apparatus and the service provider apparatus provides virtual home environment according to the subscription. The service provider apparatus can use a plurality of network operators in order to support the virtual home environment for the user. Individual users have a virtual home environment which is based on a subset of the total services. Whilst the user may have a set of services he would expect to be offered, these are only offered if permitted by the subscriber and the service provider apparatus. From the users point of view, the use of the network is hidden. The publication with reference XP 000606584 and title "User Profile identification in Future Mobile Telecommunications Systems" of the IEEE Network, the magazine of computer communications vol 8, number 5, September 1994, pages 3-39, describes that the UMTS user profile denotes in which domains and under which conditions a specific service is available to a user. Furthermore it describes that the research work on UMTS is still in progress and that new requirements for the user profile and its management such as e.g. possibilities of roaming and making use of available services if this is permitted by his/her profile, are likely to be set. Furthermore, the WO 97 07641 A (Shannon John Parker; Shet Pradid (CA); northern Telecom LTD (CA), with International Publication Date 27 February 197, and with Title "Cellular communication system with screening of unauthorized services" also describes a cellular communication system with a plurality of zones, details of authorized services for each mobile terminal, that are stored at a central register. The central register is accessed on entry of a visiting mobile terminal into that zone whereby the service details for that mobile are retrieved and stored at a local register and are compared with a set of services capable of being supported within that zone. Furthermore, only the information relating to those services that are both authorized for use by the terminal and capable of support within the zone, are provided to the terminal. Furthermore, the article of Becher R et Al with title "Camel, the impact of personal communications on intelligent networks" of the ISS 1997 World telecommunications congress (International switching symposium), global Network Evolution: convergence or collision, Toronto, September 21-26, 1997, that is published in vol. 2, 21 September 1997, describes the background of the CAMEL standard and its actual status with the main results of CAMEL Phase 1. Finally, the article of M. Torabi et AL : "Third Generations Mobile Telecommunication and Virtual Home environment : A prioritisation analysis" published in Bell Labs Technical Journal, Volume 3, Number 3, July 1998 - September 1998 pages 50-62 with ref. XP 002092427, Oratories US, describes that the ITU Standard for the third-generation International Mobile Telecommunications 2000(IMT-)2000) offers its users mobile multimedia services with a global roaming capability whereby the users are allowed to invoke the services they have subscribed to with their home network service provider anywhere around the globe in a manner transparent to them. The role that service transportability plays in offering the virtual home environment (VHE) to IMT-2000users is addressed. In order to disclose the invention as claimed, the following paragraph describes an example. Presume a universal personal telecommunication network which includes a subnetwork. According to the virtual home concept a user, being identified with its personal identification number is associated to one service provider apparatus, called its home service provider apparatus. The home service provider apparatus provides a virtual home environment according to the subscription of the user. Presume that this home service provider has a commercial relationship with this subnetwork e.g. a mobile subnetwork, called hereafter a home subnetwork. The home subnetwork is attached to the home service provider apparatus. Furthermore, presume that the home service provider apparatus offers access for all its subscribers to a list of services e.g. hotel information, roadmap information, flight information of the airport, restaurant information, etc.. In the event that the user desires to get access to the personal telecommunication network, the user submits an access request via a terminal e.g. its mobile telephone and via the home subnetwork to the universal personal telecommunication network. The home service provider apparatus provides a notification to the user which includes the capability for the user to accept the list of services of its home service provider apparatus. In this way, the user can select this offered service and, furthermore, can select e.g. the offered hotel information. In the event when the user makes a journey, the user can get access to the telecommunication network due to : an agreement between the operator of its home subnetwork or its home service provider apparatus and an operator of a subnetwork in the environment of its destination or the service provider apparatus whereto this other subnetwork is attached also due to a commercial agreement; and the right settings of its user profile offered by its subscriber and its home service provider apparatus. Indeed, an interworking between the two subnetworks is required as well as the permission for the user to get access to the telecommunication network via another subnetwork. When the user, at the destination of its journey, makes an access request with its mobile telephone to the telecommunication network, the access is requested via this other subnetwork i.e. a mobile network, called hereafter access subnetwork. Due to the existing interworking between the access subnetwork and the home subnetwork the profile of the user can be checked. When the profile of the user permits access via this access subnetwork, the home service provider apparatus of the user provides a notification to the user which includes the capability for the user to accept the list of services of its home service provider apparatus. In this way, the user can select this offered service and, furthermore, can select e.g. the offered hotel information. However, the offered hotel information is mostly information of the local environment of its home service provider apparatus e.g. the coverage area of the home subnetwork. In fact, the offered services by the home service provider apparatus are the same whatever the terminal's position within the telecommunication network. The services offered to the user, at its home area or at a visited area, are the services of its home service provider apparatus offered by its home service provider apparatus via a home subnetwork or via a subnetwork of the visited area. An object of the present invention is to provide a method to provide a service to a user, such as of the above known type but which has not the above drawback of offering to a user only the services of a home service provider apparatus, if any. According to the invention, this object is achieved by the method of claim 1 which is realized by the service provider apparatus of claim 2 and by the telecommunication network of claim 9 which includes such a service provider apparatus. Indeed, by including in the method the step of providing by a notifying service provider apparatus to the user via an access subnetwork, i.e. the subnetwork via which the user requests access to the telecommunication network, a notification which includes a capability to accept a service of an offered service provider apparatus, a virtual visited environment is offered to the user. Such a virtual visited environment is similar to a virtual home environment but is identified by the user and the offered service provider apparatus, which can be e.g. totally different of its home service provider apparatus. In this way, the concept virtual visited home environment, is offered to the user. Such a virtual visited home environment offers to the user the same way and feel independent of the terminal and the network in use, over both fixed and mobile access networks, and on different type of terminals varying from simple voice only terminals to powerful laptops. It has to be understood that similar as to the user profile as defined in the above mentioned standard for the virtual home environment, also a visited user profile has to be defined. Usually, such a visited user profile will be more restricted as compared with a general home user profile. On the other hand, such a visited user profile might offer alternative payment methods which offers, once fulfilled, the possibility to select a broader list of services. It has to be remarked that in an embodiment of the present invention, in the event when the notifying service provider apparatus is the home service provider apparatus of the user, the offered service provider apparatus is different of the notifying service provider apparatus. Indeed, in the event when the notifying service provider apparatus and the offered service provider apparatus are both constituted by the home service provider apparatus, the home service provider apparatus provides to the user a notification which includes a capability to accept a service of itself, which brings us in the above mentioned prior art situation. An advantage of such a universal personal telecommunication network which includes a plurality of service provider apparatus' whereof each one of the service provider apparatus' includes a notifying means to provide such a notification to the user, is that a user can go anywhere in the area of the telecommunication network, i.e. the area covered by the subnetworks being associated to anyone of the plurality of service provider apparatus', and upon requesting access to the telecommunication network via one of these subnetworks, called access subnetwork, the user is enabled to accepts a service of anyone of these service provider apparatus, called offered service provider apparatus, which is offered by anyone of these service provider apparatus', called notifying service provider apparatus. It has to be remarked that, in the event when the offered service provider apparatus and the notifying service provider apparatus are different service provider apparatus', an interworking, direct or indirect, between one of the subnetworks associated to the offered service provider apparatus and one of the subnetworks associated to the notifying service provider apparatus, is evident to a person skilled in the art. A first embodiment of the present invention is that the notifying service provider apparatus is constituted by a service provider apparatus which is associated to the access subnetwork whereby a virtual environment is identified with the service provider apparatus and the access subnetwork. This is described in claim 3. Another possible implementation is that, in the event when the service provider apparatus according to the invention i.e. the notifying service provider apparatus being associated to the access subnetwork, is also constituted by the offered service provider apparatus. This is described in claim 4 and brings us in the situation, if referring to the above mentioned example of the service of hotel information, that the service provider apparatus associated to the accessed subnetwork, at a visited location, is enabled to offer its own services to users which are visiting its area. The offered hotel information will be information of the local hotels. It has to be remarked that the service is offered by the service provider apparatus, even when no interworking between the access subnetwork and the home subnetwork is established and even more, also when the user has no home subnetwork at all. Indeed, the offered services by the offered service provider apparatus might be free of charge or on the other hand might include possibilities to pay e.g. with creditcards in order to get access to more services which are not free of charge anymore. Yet, another possible implementation is similar to the above paragraph, but differs that the offered service provider apparatus is different of the notifying service provider apparatus. This brings us in the situation that the notifying service provider apparatus, being associated to the access subnetwork, provides a notification which includes the capability to the user to accept a service of a related service provider apparatus e.g. the service provider apparatus whereto a neighboring subnetwork is associated but with which a commercial agreement is established. In the event when such an offered service provider apparatus is the home service provider apparatus, the service provider apparatus of the invention provides the notification to the user to accept the services of its offered home service provider apparatus or not. This is described in claim 5. Another possible implementation is, still in the situation that the notifying service provider apparatus is associated to the access subnetwork, that the notifying service provider apparatus is also the home service provider apparatus of the user. This brings us in the situation that a user which requests access in its home area i.e. the area of its home subnetwork, receives a notification of its home service provider apparatus which includes the capability to the user to accept, besides the services of its home service provider apparatus, also the services of other service provider apparatus e.g. service provider apparatus which are associated with neighboring subnetworks. In this way, again following the example of hotel information, the user is enabled to accept from its home service provider, the service of the service provider apparatus of the area which he is going to visit and to inquire the information of the hotels of the visited area in advance. This is described in claim 6. Yet, another implementation is that the notifying service provider apparatus is not associated to the access subnetwork. As already mentioned above, it has to be understand that in this situation, in order to provide a notification by the notifying service provider apparatus to the user via one of its own associated subnetworks and via the access subnetwork, that both subnetworks are interworking with each other. Now, it is described in claim 7 that the service provider apparatus of the invention in such a situation is also constituted by the home service provider apparatus of the user. In this way, it is the home service provider apparatus of the user which offers the service of other service provider apparatus via the access subnetwork. Finally it is described in claim 8 that, similar to the above situation, the offered service provider apparatus is associated to the access subnetwork. Indeed, the user being in a visited location and requesting access via an access subnetwork which is not its home subnetwork, receives a notification, via a home subnetwork associated to its home service provider apparatus and via the access subnetwork, which includes the capability to accept the services of the local visited service provider apparatus. Again, the user is enabled to accept the service of this local service provider apparatus and to select the information of the local hotels. The above and other objects and features of the invention will become more apparent and the invention itself will be best understood by referring to the following description of a not limiting embodiment taken in conjunction with the accompanying drawings wherein Figure 1 illustrates the system concept of a virtual home environment of a user and a virtual visited environment for this user. First, the working of the method of the present invention will be explained by means of a functional description of the functional blocks shown in the figure. Based on this description, implementation of the functional blocks will be obvious to a person skilled in the art and will therefor not be described in detail. In addition, the principle working of the method to provide a service will be described by means of an example of a possible situation which is a preferred embodiment of the present invention. In a universal personal telecommunication network a user U is associated to its subscriber and its home service provider apparatus SP-H. A virtual home environment VHE is a system concept which provides personal service portability across network boarders and between terminals. The concept virtual home environment is such that the user U is consistently presented with the same personalized features, user interface capabilities and services in whatever network and whatever terminal, wherever the user may be. The Figure shows this virtual home environment concept VHE for a user U. A subscriber (not shown in the Figure) has an commercial agreement i.e. a subscription with the home service provider apparatus SP-H. The subscriber authorizes to user U to use some predefined services under this commercial agreement. Presume that this service provider apparatus SP-H is located in Antwerp. The home service provider apparatus SP-H has one or more relations with network operators. The Figure shows a relation between the home service provider apparatus of user U and : a plurality of fixed subnetworks SUB-F1-H; a first plurality of mobile subnetworks SUB-M1-H; and a second plurality of mobile subnetworks SUB-M2-H. In order not to overload the figure only the first one of each plurality is shown. Presume that the plurality of fixed subnetworks SUB-F1-H and the first plurality of mobile subnetworks are each covering the area of Belgium. Furthermore, presume that the second plurality of mobile subnetworks is covering the area of Italy. The system concept virtual home environment VHE of the user U provides to the user U the same look and feel of a service independent of the used terminal and network. It has to be explained that the service provider SP-H offers a set of services whereof a list of hotels in the environment of Antwerp. This list includes the telephone numbers, addresses, ranking and standard prices of the hotels in the environment of Antwerp. These services are free of charge and are offered to its subscribed users but are also offered to no subscribed users via a virtual visited environment. This virtual visited environment will be explained in a further paragraph. Now, as it is shown in the Figure, additional relations are established between : the second plurality of mobile subnetworks SUB-M2-H and another service provider i.e. SP-V, located in Milan, and called hereafter the visited service provider apparatus which will be explained in a further paragraph; this visited service provider apparatus SP-V and a second plurality of fixed subnetworks SUB-F2; and even more, also between the two mentioned service provider apparatus SP-H and SP-V. The relation between the visited service provider apparatus SP-V and the second plurality of fixed subnetworks SUB-F2 is mentioned e.g. in order to illustrate that the mentioned relations are not limitative and that still other relations (not shown) are possible between service providers and subnetworks. Similar to the offered services of the home service provider apparatus, also the visited service provider apparatus at Milan, offers a set of services. This list of services is again including a list of hotels, but this time, of the environment of Milan. The list of hotels is again offered, free of charge, to its subscribed users but also to no subscribed users by means of a virtual visited environment. In this preferred embodiment the terminal used by the user U is defined to be a personal mobile telephone set T. According to the present invention, once the user U requests access to the personal telecommunication network via its terminal T, a notification will be provided to the user U. Presume that according to the commercial relation between the two service provider apparatus the following agreement has been established : in the event when a user, which is associated to one of the two service provider apparatus being its home service provider apparatus e.g. SP-H, requests access via a subnetwork e.g. SUB-M2-H which also has a commercial relation with the other service provider apparatus e.g. SP-V, the notifying service provider apparatus is constituted with the home service provider apparatus SP-H and besides its own services, the notifying service provider apparatus provides a notification to the user which includes a capability to accept a service of the other service provider apparatus SP-V which constitutes thereby the offered service provider apparatus. This agreement means that as well the home service provider apparatus SP-H as the visited service provider apparatus must be able to fulfill the notification according to the invention. Indeed, in the event of a second user (not shown) being associated to the visited service provider apparatus as its home service provider apparatus, the roles of notifying service provider apparatus and offered service provider apparatus are exchanged between both service provider apparatus SP-H and SP-V. In order to execute the notification according to the invention each service provider apparatus SP-H and SP-V includes a notifying means, i.e. NOT, to provide a notification to a user. Such a notifying means includes in fact the capability to open to a user the door to another service provider apparatus i.e. the offered service provider apparatus. It has to be understood that this requires the necessary information at the notifying service provider apparatus to identify and to establish a communication between the user and the offered service provider apparatus. At the side of the offered service provider apparatus, a virtual visited environment is identified by the means of service subscription following a visitor profile. This means that a user which receives the services of a service provider apparatus via a notification of a notifying service provider apparatus, only receives the services following the subscription of the visitor profile. In order to explain the principle working of the method of the invention, an example of a possible situation is described hereafter. Presume the situation as above described. A user with its home service provider apparatus in Antwerp which is associated with three plurality of subnetworks SUB-F1-H, SUB-M1-H and SUB-M2-H covering the area of Belgium, Belgium and Italy respectively. In the event when the user U travels to Milan and desires to require hotel information of the local place, i.e. Milan, he first executes an access request R to the universal personal telecommunication network, via its mobile telephone T and via the mobile telephone network of the environment i.e. subnetwork SUB-M2-H. It has to be remarked that following the invention this subnetwork SUB-M2-H is defined as the access subnetwork. The access subnetwork is associated to the service provider apparatus in Milan SP-V which is defined hereby as the visited service provider apparatus. The subnetwork SUB-M2-H and the visited service provider apparatus SP-V are defining together a virtual environment. Due to the personal identification number of the user U, the service provider apparatus SUB-M2-H knows that the user U has its subscription via a subscriber with the service provider apparatus SP-H in Antwerp i.e. the home service provider apparatus. On the other hand, the fact that the access request is entered via the access subnetwork SUB-M2-H which has also a relation with the service provider apparatus in Milan SP-V i.e. the visited service provider apparatus and due to the commercial agreement between the home service provider apparatus SP-H and the visited service provider apparatus SP-V, the home service provider apparatus SP-H creates a notification in its notifying means and provides this notification N(SP-V) via the access subnetwork SUB-M2-H to the user U. This notification N(SP-V) includes a capability to accept a service of an offered service provider apparatus which is in this case the visited service provider apparatus SP-V. The offered service is the virtual visited environment identified by the user and the visited service provider apparatus SP-V. The user accepts this offered service and receives services in line with the subscription of the visitor profile. The services offered by the offered service provider apparatus are restricted following the subscriptions of the visitor profile. However, as it is mentioned above, a list of the hotels of Milan is offered free of charge to the visited user whereby the user is enabled to make an inquire of this list. It has to be remarked that although in the preferred embodiment a mobile telephone has been chosen as the terminal via which the user communicates, the application of the invention is not limited to only mobile telephone sets. Indeed, as explained following the system concept of a virtual home environment and similar following the system concept of a virtual visited environment, small modifications evident to a person skilled in the art, may be applied to the above described embodiment in order to adapt it to be integrated with other kind of terminals e.g. a portable personal computer or a mobile telephone set integrated in a car. While the principles of the invention have been described above in connection with specific apparatus, it is to be clearly understood that this description is made only by way of example and not as a limitation on the scope of the invention, as defined in the appended claims.

Claims: Method to provide a service to a user (U) in a universal personal telecommunication network, said method includes the step of requesting access by said user to said telecommunication network via a terminal (T) and via an access subnetwork (SUB-M2-H) of said telecommunication network in order to provide thereby an access request (R), characterized in that said method further includes the step of upon receiving of said access request (R) providing by a notifying service provider (SP-H) apparatus to said user (U) via said access subnetwork (SUB-M2-H), a notification (N(SP-V)) which includes a capability to accept a service of an offered service provider (SP-V) apparatus, in the event when said notifying service provider apparatus being a home service provider apparatus of said user (U), said offered service provider apparatus is different of said notifying service provider apparatus, said service being a virtual visited environment (WE) being identified by said user (U) and said offered service provider (SP-V) apparatus. Service provider (SP-H) apparatus adapted to provide a service to a user (U) in a universal personal telecommunication network upon receiving of an access request (R) from said user (U) via a terminal (T) and via an access subnetwork (SUB-M2-H) of said telecommunication network, characterized in that said service provider (SP-H) apparatus includes notifying means (NOT) adapted to provide a notification (N(SP-V)) to said user (U) via said access subnetwork (SUB-M2-H), said notification (N(SP-V)) including a capability for said user to accept a service of an offered service provider (SP-V) apparatus, in the event when said service provider apparatus is a home service provider apparatus of said user (U), said offered service provider apparatus being different of said service provider apparatus, said service being a virtual visited environment (VVE) being identified by said user (U) and said offered service provider (SP-V) apparatus. A service provider apparatus according to claim 2, characterized in that said service provider apparatus is associated to said access subnetwork whereby a virtual environment is identified with said service provider apparatus and said access subnetwork. A service provider apparatus according to claim 3, characterized in that said service provider apparatus is also constituted by said offered service provider apparatus. A service provider apparatus according to claim 3, characterized in that said offered service provider apparatus is constituted by a home service provider apparatus of said user. A service provider apparatus according to claim 3, characterized in that said service provider apparatus is also constituted by a home service provider apparatus of said user whereby said virtual environment is constituted by a virtual home environment of said user. A service provider apparatus according to claim 2, characterized in that in the event when said service provider apparatus is not associated to said access subnetwork (SUB-M2-M) said service provider apparatus is also constituted by a home service provider (SP-H) apparatus of said user. A service provider (SP-H) apparatus according to claim 7, characterized in that said offered service provider (SP-V) apparatus is associated to said access subnetwork (SUB-M2-M) whereby a virtual environment is identified with said access subnetwork (SUB-M2-M) and said offered service provider (SP-V) apparatus. A universal personal telecommunication network, characterized in that said telecommunication network includes at least one service provider apparatus according to claim 2.

Inventors: PETERS MARCO JOHANNES HUBERTUS, PETERS, MARCO JOHANNES HUBERTUS
Applicants: CIT ALCATEL, ALCATEL
Application year: 1998
Main classification: H04M3
IPC codes: G06F13, H04Q7, H04M3, H04M7