PROCEDURE TO FACILITATE COMMUNICATION BETWEEN PARTICIPANTS ACTIN IN NETWORKS THAT UTILIZE DIFFERENT ADMINISTRATIVE AND TECHNICAL PRINCIPLES BY DIVIDING THE INFRASTRUCTURE INTO LOGICAL LAYERS

Abstract: Procedure to facilitate communication between different participants in an infrastructure for communication, which participants act in communication networks which at least partially are utilizing different administrative and technical principles, at which the infrastructure for communication is divided into a number of logical layers, a number of participants are defined in each of the logical layer, and the participants in respective logical layers are linked to one or more logical addresses in the logical layer. Further, the logical addresses are linked in a logical layer to one or more logical addresses in adjacent logical layers.

Description: PROCEDURE TO FACILITATE COMMUNICATION BETWEEN PARTICIPANTS ACTING IN ^ NETWORKS THAT UTILIZE DIFFERENT ADMINISTRATIVE AND TECHNICAL PRINCIPLES BY DIVIDING THE INFRASTRUCTURE INTO LOGICAL LAYERS Technical field The present invention relates generally to communication networks and specifically to a procedure to facilitate communication between different participants in an infrastructure for communication, which participants act in communication networks which at least partially utilize different administrative and technical principles. Technical problem In the telecommunication and data communication networks of today, there are many different technologies for managing of the communication. Further, the deregulation of the telecommunication market has resulted in an ever increasing variety of suppliers in the field. These suppliers are to some extent newly established companies, but are also existing companies with existing infrastructures or service offering which are suitable for implementation of telecommunication and data communication services respectively by means of telecommunication and data communication services. Examples of such existing companies are companies which have at their disposal networks for distribution of electrical power, railway system networks and companies which offer information services. The different kinds of new suppliers within the field have had greatly different starting positions which has resulted in systems with different ways of managing data that are utilized at the realization and management of offered services. This partially applies between systems of different suppliers in which communication is made by means of the same technology, but perhaps above all between systems in which communication is made by means of different technologies. A supplier of a service will in addition in many cases need to utilize the services of other suppliers at realization and management of the services. A supplier of a mobile telephone service must, for instance, utilize a supplier of an interconnectivity service when a call shall be set up between a customer of the mobile telephone service and a customer of another service, such as a service for fixed telephony. This results in a need of coordination between the different services. Especially the management of the addressing must be coordinated between the services. The fact that the different systems, which have been built up for realization and carrying of different services, have different ways of managing data, which are utilized at the realization and management of offered services makes it difficult to satisfy the need of coordination of data between different communication networks and services . The solutions of today of how coordination of data shall be possible between different systems for realization and carrying of different communication services are to a large extent based on that specific interfaces are introduced between each of the systems between which coordination is needed. A big problem with this type of solutions is that a large number of specific interfaces are needed, which results in poor flexibility and is expensive and complex. For instance there will be problems at introduction of new services or at utilization in a system of service in another system where no interface for coordination of data has been introduced. Further, this kind of solutions result in that a customer who wants to utilize different services which have been realized in different systems just as previous must have an address for each service supplier, and that addresses cannot be retained if the customer selects to change service supplier. Further, also centralized suggestions for solution have been presented, in which central databases manage coordination of data between different communication networks. These solutions, however, have been strongly aimed at the technical coordination of different communication networks, which utilize different communication technologies, such as mobile telephone networks, IP-networks and ATM-networks etc. Consequently, for instance, the addressing in theses suggestions for solutions are still strongly connected to the technical realization. Addresses in a network are linked via a subscriber in this network to an address in another network. A user consequently must have different addresses if he/she shall be subscriber in different networks and also has to change address if he/she shall change operator. Further a service which utilizes the services of different suppliers has to be coordinated with the services of all these suppliers if they are using different administrative and technical principles, for instance for addressing. Summary of the invention The aim of the present invention is to solve the problem that the addressing for a participant at utilization of a service is strongly connected to underlying services, which results in that the addressing must be updated if the addressing is changed in the underlying service. By that, communication is facilitated between participants in an infrastructure for communication, which participants act in communication networks which at least partially utilize different administrative and technical principles. The aim above is achieved by a procedure according to the patent claim 1 where the infrastructure for communication is divided into a number of logical layers . A number of participants are defined in each of the logical layers and the participants in respective logical layer are linked to one or more logical addresses in the logical layer. Further, the logical addresses in a logical layer are linked to one or more logical addresses in an adjacent logical layers . By participants are meant physical and logical objects which can act in the communication networks . These participants consequently can be technical equipment or physical/legal persons such as customers/users, service suppliers, networks, support systems etc., but also logical objects such as software in computers etc. Communication networks and communication shall be interpreted in a wide sense and include all types of connections respective information exchange between participants, i.e. connections respective between exchange of information in a service and within systems for technical and administrative management. Logical addresses shall be interpreted in a wide sense and include everything from physical addresses, such as a permanent home address or address to a port in a computer, to more abstract addresses, such as a logical pointer to one at present used physical address. By the participants being linked to logical addresses in the same logical layer, which logical addresses then are linked to logical addresses in adjacent logical layers, the logical addresses in a logical layer need not be updated if the addressing is changed in another logical layer. The only thing that has to be done is that the linking is changed to the new logical address in the logical layer where the addressing has been changed. For instance can a user of a mobile telephone service in a service layer retain his/her logical address in the service layer even if he/she changes operator. This is due to that the logical address in the service layer is linked to a logical address in an interconnectivity layer which points out a logical address to the network to which the user is connected. At change of operator consequently only the pointer is changed from the logical address in the interconnectivity layer to pointing at a logical address in the network of the new operator. The invention is based on the knowledge that it is not sufficient that the addressing between the networks are coordinated, either this is made locally between each of the systems, or centrally in an overall system, to eliminate the problem. Instead the addressing must be released from the specific technical solution and also from the specific technical solution which respective service supplier utilizes in the infrastructure for communication. In addition to solving above mentioned problems, the invention has a number of other advantages in comparison with known technology. Above all the object-oriented view on participants and logical addresses in a layer-structured architecture provides possibilities for a more consistent and by that more secure and efficient management of participant data and the logical addresses to which these are linked. For instance makes the architecture general methods for access and management of participant data and logical addresses of both technical and administrative systems possible. By the logical addresses being defined by layers, the addressing in the service layer can be released from the physical realization and therefore be made more user-friendly. Further, rules for access of information, services etc, can in a simpler way be defined between participants . Brief description of the drawings The invention will be described in detail in the following with reference to the enclosed drawings, in which Figure 1 schematically shows a division of an infrastructure for communication in a number of logical layers , Figure 2 schematically shows a system in which an embodiment of the invention is realized, and Figure 3 shows a flow chart for a procedure according to the invention. Description of preferred embodiments In Figure 1 is shown a division of an infrastructure for communication in a number of logical layers 1-6. The division is in this example made in six layers 1-6 for three different groups/branches A-C which include business architecture A, technical architecture B, and information architecture C. Another division into layers and other types of groups/branches can of course be made. At the bottom there is a terminal layer 1, with the physical terminals, such as mobile telephones, exchanges, service servers etc. After this there is a transmission layer 2 with equipment for transmission, such as optical fibers, radio links etc. The layer above the transmission layer 2 is the network layer 3, in which there are the different networks, such as IP-networks, GSM-networks , PSTN-necworks ecc . Above this layer there is an interconnectivity layer 4 in which there are functions for interconnection of different networks. The interconnection can be made between networks that utilize the same technology, and networks which utilize different technologies. After this layer, there is a service layer 5 in which different types of services are realized, which utilize the underlying layers. The services can be information services and communication services etc, such as web-services and telephony. At the top of this division there is a context layer 6, in which there are tailor-made services, for instance customer specific applications and profiles . According to the invention this logical division of layers then is utilized at storing, management and exchange of information between different systems and services in and between layers by a number of participants and logical addresses which are connected to these being defined in the different logical layers. Examples of participants are customers /users, operators, service suppliers, information suppliers etc and examples of logical addresses which are connected to these is an address to a customer of a supplier of a telephone service. The logical addresses are then linked to logical addresses in adjacent layers. For instance is a customer's logical address for a telephone address in the service layer linked to a logical address in the interconnectivity layer. A more detailed description is given in the following. Figure 2 shows schematically a system in which an embodiment of the invention is realized. A service server 21 in a service layer 5 is connected to an interconnectivity server 22 in an interconnectivity layer 4. The interconnectivity server 22 is in its turn connected to database unit 23 and a network 24 in a network layer 3. In the database unit 23 there are logical addresses 25, participants 26, and links between these stored, such as links between participants 26 and logical addresses 26, and between logical addresses 26 which relates to different logical layers. For instance has the service server 21 a logical address in the service layer 5. This logical address is linked to a logical address in the interconnectivity layer 4, which logical address in its turn is linked to a logical address in the network layer 3. Further, the logical address of the service server 21 in the service layer 5 is linked to a participant, which in this case is the service supplier that provides the service. In the database 23 there are also links between the participant that supplies the service and other participants, such as users of the service. For these linking/links there is a level of authorization defined which i.a. controls to which information the different participants are authorized at each other. In Figure 3 is shown a flow chart for a procedure according to the invention. In a step 31, the infrastructure for communication is divided into logical layers according to Figure 1. In the steps 32-37 a number of different objects are defined which are linked to each other and are stored in a database according to Figure 2. In a step 32 a number of participants, such as a customer and a service supplier, are defined. Each of the participants in the logical layers are then linked in a step 33 to one or more logical addresses in the same logical layer. For instance is the customer and the service supplier linked to a set of logical addresses each. Then are, in a step 34, the logical addresses for each of the participants linked to one or more logical addresses in adjacent logical layers. Further, the database and the service server are allocated a logical address each, in a step 35, respective in a step 36 in the layers to which these belong. In addition is, according to Figure 2, in a step 37 a service server linked to the service supplier. In a step 38 is then from the service server a request for information about a logical address transmitted, which is linked to the customer to the database. In a step 3S ; is decided which level of authorization the service supplier, who is linked to the service server, has with regard to the customer. If the service supplier is authorized to all the information that is requested, this information is delivered in a step 40 to the service server, otherwise is in a step 41 delivered only the portion of the requested information to which the service server is authorized.

Claims: PATENT CLAIMS 1. Procedure to facilitate communication between different participants in an infrastructure for communication, which participants act in communication networks which at least partially utilize different administrative and technical principles, including the steps to divide the infrastructure for communication into a number of logical layers, to define a number of participants in each of the logical layers, to link the participants in respective logical layer to one or more logical addresses in the logical layer, and to link the logical addresses in a logical layer to one or more logical addresses in adjacent logical layers. 2. Procedure as claimed in patent claim 1, further including the step to, for each of the logical layer, store the participants, the logical addresses and the linking/ links between these in a separate logical unit. 3. Procedure as claimed in patent claim 2, further including the step to allocate respective separate logical unit a logical address in the logical layer to which it belongs. 4. Procedure as claimed in patent claim 3, further including the steps to, from a unit in a communication network, transmit a request about information regarding logical addresses to a separate logical unit, to, on basis of the linking/links between logical addresses, compile/put together the information that is requested, and to, from said separate, logical unit transmit the requested information to said unit in said communication network. 5. Procedure as claimed in patent claim 4, further including the steps to allocate a unit in a communication network a logical address in the logical layer to which it belongs, and to link said unit in said communication network to a participant . 6. Procedure as claimed in patent claim 5 further including the steps to, from said unit in said communication network, transmit/send a logical address for said unit to said separate logical unit, and to decide a level of authorization for the participant to which the logical address of said unit is linked, at which only that portion of the requested information is transmitted from said separate, logical unit to said unit in said communication network to which said unit in said communication network is authorized. 7. Procedure as claimed in any of the patent claims 4- 5, at which request is transmitted via a general protocol for exchange of information. 8. Procedure as claimed in any of the patent claims 1- 7 , at which the logical layers include at least two of a terminal layer, a transmission layer, a network layer, an interconnectivity layer, a service layer, and a context layer.

Inventors: ERHULT MARGARETA, HAGBARD STEFAN, ERHULT, MARGARETA, HAGBARD, STEFAN
Applicants: ERHULT MARGARETA, HAGBARD STEFAN, TELIA AB, ERHULT, MARGARETA, HAGBARD, STEFAN
Application year: 2001
Main classification: H04L29
IPC codes: H04L29, H04M3