METHOD AND SYSTEM FOR TRANSMITTING INFORMATION

Abstract: The present invention relates to a method and system for establishing a data connection between a terminal device of a public land mobile network and a terminal device of another public land mobile network or a terminal device of some other telecommunication network or some other component. According to the invention, there is reigstered in the data mirror a community which consists of one or more members, a connection is established from a member sender of the information to the data mirror; a connection request is sent to one or more member receiver wishes to establish a connection, then a telecommunication connection is established from one or more member receivers to the data mirror; and information is transmitted between two or more members of the aforementioned community via the data mirror.

Description: METHOD AND SYSTEM FOR TRANSMITTING INFORMATION FIELD OF THE INVENTION The present invention relates to telecommunication systems. In particular, the invention relates to a method and system for establishing a virtual connection between two parties. BACKGROUND OF THE INVENTION In telecommunication networks it is possible to transmit information between two or more terminal devices. Most favourable is the situation, when both parties of the transfer of information - the sender and the receiver - are aware of the information to be transferred. In certain cases, it is possible to push information to the terminal device from the telecommunication network, which information the user of the terminal device is, however, not willing to receive. In addition, the user of the terminal device may have to pay for receiving the pushed information. In a circuit-switched (CS, Circuit Switched) mobile phone environment it is possible to make a mobile terminated (MT, Mobile Terminated) data call. This causes, however, permanent costs to the operator. Correspondingly, the monthly payment of the MT data call as well as the minute payment falls on the terminal device. In a packet-switched (PS, Packet Switched) mobile phone environment an MT data connection is necessarily not possible. Instead, it is possible to es- tablish mobile originated (MO, Mobile Originated) connections, in which case the user activates a PDP context (PDP, Packet Data Protocol) in the direction of the public land mobile network. After this, the transfer of information is successful from the terminal de- vice to the public land mobile network and vice versa. In an MO case, a connection to another terminal device is, however, not possible. The public land mobile network cannot necessarily activate the connection to the terminal device either, although there would be an application or a user willing to transfer information directly to another terminal device. With the Network Request PDP Context Activation functionalities of the GPRS network (GPRS, General Packet Radio Service) it is possible to make a data connection activated by the public land mobile network. The data connection is made e.g. between the public land mobile network and the terminal device, or between two terminal devices. The problem at present is that it is possible to push information to a mobile client from the net- work without the client's consent. Furthermore, a problem is becoming the risk of information security and virus. In addition, this will increase the costs of the mobile client, when somebody on purpose keeps pushing information to the mobile station from the network without the client's consent. OBJECTIVE OF THE INVENTION The objective of the invention is to eliminate the drawbacks referred to above, or at least sig- nificantly to alleviate them. One specific objective of the invention is to disclose a new type of method and system in which it is possible to virtually establish connections between terminal devices, in which connections the triggering of the connection set-up is done by the network. BRIEF DESCRIPTION OF THE INVENTION The present invention relates to a method for establishing a data connection between a terminal de- vice of a public land mobile network and a terminal device of another public land mobile network or a ter- minal device of some other telecommunication network or some other component . In the method in accordance with the invention, a community is registered in a data mirror that consists of one or more members. The members of the community have to register the identification of the users belonging to the group, which is e.g. an identifier and a password corresponding to it, an IP address (IP, Internet Protocol) , a MSISDN number (MSISDN, Mo- bile Subscriber ISDN) or a port number. By means of this information the members of the community are able to establish a connection to the other members of the same community. Each member has got a profile of their own to which it is possible to save information e.g. on the allowed connection types, allowed protocols, allowed applications, content preferences, quality requirements of the connection, etc. A member sender of the community establishes a connection to the data mirror. In order that the connection set-up would be successful the member sender has to identify himself/herself as shown above. The member sender provides the data mirror with the piece of information on those members of the community to whom a connection is desired to be established. The data mirror sends one or more member senders of the community a connection request which includes information e.g. on the object requesting the connection, the subject of the connection or the type of the connection. The data mirror sends a connection request to the member receivers e.g. via the short message service (SMS, Short Message Service) of the public land mobile network. The receiver of the connection set-up message has not have to accept the connection request. If the member receiver, however, wishes to establish a connection to the member sender, (s)he establishes first a connection to the data mirror. The member receiver shall identify himself/herself in conjunction with the connection set-up. At the same time it is checked that the member receiver belongs to the same community as the member sender. When the desired members of a cer- tain community have established a connection to the data mirror, it is possible to transmit information between the members of the community. One member may be a participant in one or more communities. Between the members of the community it is possible to trans- mit point-to-point information (PTP) or point-to- multipoint information (PTM) . It is also possible to arrange specific additional features in the data mirror. The data mirror may virus-check the data being transmitted to it, fil- ter or compress information, depending on what settings the members of the community have set. The method in accordance of the invention does not take a stand on how a member sender or a member receiver establishes the connection to the data mirror. As the connection mode it is possible to use a circuit- switched as well as a packet-switched connection. The invention relates to a system for establishing a data connection between a terminal device of a public land mobile network and a terminal device of another public land mobile network or a terminal device of some other telecommunication network or some other component. The system comprises a public land mobile network, a telecommunication network, a member sender who is in connection to the public land mobile network or to the telecommunication network, and one or more member receivers who are in connection to the public land mobile network or to the telecommunication network. The public land mobile network is e.g. a GSM network (GSM, Global System for Mobile communica- tions) , a GPRS network (GPRS, General Packet Radio Service) or a UMTS network (UMTS, Universal Mobile Telecommunications System) . The telecommunication network is advantageously an Internet network. The system in accordance with the invention comprises a data mirror for registering a community, which community consists of one or more members and which data mirror is connected to the public land mobile network and/or to the telecommunication network. The data mirror comprises a database, or there is a connection from the data mirror to the database, to which information relating to the communities and to the members of the community has been saved. In addition, the member sender and the member receiver comprise connection means for establishing a connection to the data mirror. The data mirror further comprises message means for sending the connection request to one or more member receivers of the community and information means for transmitting information between two or more members of the aforementioned community. In one embodiment of the invention, the data mirror comprises virus checking means for checking the information going through the data mirror. In one embodiment of the invention, the data mirror comprises a filter for filtering the information going through the data mirror. In one embodiment of the invention, the data mirror comprises a compressor for compressing the information going through the data mirror. Thanks to the present invention, it is possible to filter certain elements from the information going through the data mirror, e.g. big attachment files. The data mirror also virus-checks all the information transmitted by it. Thanks to the present invention, it is not possible to push information to the mobile station without the mobile client's consent. Furthermore, the solution enables one to reliably make sure of the identification of a member of another community. BRIEF DESCRIPTION OF THE DRAWINGS In the following section, the invention will be described in more detailed by the aid of the exam- pies of its embodiments, in which Fig. 1 represents one system in accordance with the invention, Fig. 2 is one advantageous flow chart illustrating the function of the method in accordance with the invention, Fig. 3 represents one advantageous embodiment of the present invention, and Fig. 4 represents one advantageous short message shown in the example of Fig. 3. DETAILED DESCRIPTION OF THE INVENTION The system as shown in Fig. 1 comprises a public land mobile network PLMN, to which there are connected one or more mobile stations MSl...MSn. The system also comprises a telecommunication network CN. The data mirror DM is connected both to the public land mobile network PLMN and to the telecommunication network CN. The public land mobile network is e.g. a GSM network, a GPRS network or a UMTS network. The telecommunication network is preferably an Internet network. Connected to the telecommunication network CN is also a member sender SEND, which is preferably a computer. The data mirror DM is preferably used to refer to a server computer which comprises the necessary software and interfaces for attaching it to the necessary telecommunication networks and other devices. An essential element from the point of view of the invention is the data mirror DM. The data mirror DM comprises a database DB, or there is a connec- tion from it to the database DB, to which client profiles have been saved. In order that the clients could use the services provided by the data mirror DB, they have to order the service from a service provider. The service provider is herein used to refer to an entity which by means of the data mirror provides the termi- nal devices and applications with the possibility of establishing virtual connections. The service has to be initialized before its introduction. The subscriber creates a user profile in which (s)he establishes different communities and de- fines parameters associated with the service. The subscriber may in his/her profile define different additional services, which may include e.g. the virus- checking of all data coming to the subscriber or the filtering or compressing of incoming data, depending on the bandwidth used. In the profile it is also possible to define information on allowed data connection types, - quality requirements, content preferences, allowed protocols, allowed applications, etc. The subscriber may in addition edit his/her profile in a de- sired manner, e.g. via an Internet connection. The subscriber is hereinafter also referred to as a "member" . The community is herein used to mean a kind of a user group to whose members it is possible to establish a connection inside the group via the data mirror DM. As a member belonging to the community it is possible to define any person or application clearly identifiable, for whose identification it is possible to use different identification methods. Methods of this kind include e.g. an identifier and a password, a MSISDN number, an IP address, a TCP port number (TCP, Transmission Control Protocol), etc. Between the members of the community it is possible to transmit point-to-point information (PTP) or point-to- multipoint information (PTM) . The data mirror DM is arranged to transmit information between the community members. Since the traffic between the members goes through the data mir- ror DM, it is possible to include different special functions in the operation of the data mirror. The virus checking means VDM are used to check the information going through the data mirror DM. The virus checking means VDM are preferably used to refer to an application implemented by program blocks of a computer that checks the information being checked for viruses described in the virus database. The information means IM are used to transmit the information coming to the data mirror DM to the appropriate member of the community. The data mirror further comprises a compressor CMP which is used to compress the information going through the data mirror. The compressor CMP is ad- vantageously used to refer to an algorithm which enables one to compress the information being transmitted, e.g. in a situation where the bandwidth at the disposal of the receiver of the information is restricted. The compressor CMP may be implemented via software or by means of logic circuits. The data mirror DM also comprises a filter FIL for filtering the information to be transmitted via the data mirror. The filter FIL may be used to filter certain elements of the information, e.g. big attachment files, or it is possible to otherwise restrict the information to be transmitted to a member receiver. Message means MM are used to send the connection request to one or more member receivers of the community. The message means MM are used to refer e.g. to program blocks or compo- nents by means of which it is possible to create and send a short message of a public land mobile network. The member sender SEND and the member receiver MSl...MSn comprise connection means CM for establishing a connection to the data mirror DM. The connection means CM are herein used to mean e.g. a modem, a LAN interface, the connection protocols needed for data transfer, or other factors enabling the data transfer. Although it has been described above that the system comprises both a public land mobile network and a packet-switched telecommunication network, the present invention may be utilized also in other telecommunication network combinations. A member of the community may establish a connection to the data mirror by using the desired telecommunication network and con- nection mode. The telecommunication network is used to refer e.g. to a public land mobile network, a regular telephone network or the Internet . Depending on the telecommunication network, it is possible to use a circuit-switched connection (e.g. GSM CSD, GSM HSCSD, ISDN, PSTN, etc.), or a packet-switched connection (e.g. GPRS, UMTS, LAN, etc.) as the connection mode. Further, although it has been presented above that one of the members is connected to a public land mobile network PLMN and the other one to a telecommunication network CN, both the member sender SEND and the member receiver MS may both communicate only with the public land mobile network PLMN. In other words, the public land mobile network PLMN and the telecommunication network CN refer to the one and the same network. Al- though it has been presented above that the member sender SEND is a computer, it may be any device connected to a public land mobile network PLMN or a telecommunication network CN, or a program or program block included in a device connected to a public land mobile network PLMN or a telecommunication network CN. Fig. 2 represents one advantageous embodiment of the function of the method in accordance with the invention. The example of Fig. 2 comprises a member receiver MS, a data mirror DM, and a member sender SEND. The terminal device at the disposal of the member receiver MS is preferably a mobile station. The terminal device of the member sender SEND is in turn preferably a computer. Both members have ordered the service produced by the data mirror from the service provider and initialized the service. At the same time, the members have signed up as the members of the same community. As shown by arrow 20, the member sender SEND establishes a connection to the data mirror DM. The member sender is reliably identified. As the piece of identification information, e.g. an identifier or a password, a MSISDN number, an IP address, a TCP port or some suitable combination may serve. The data mirror DM sends a connection request to a member receiver MS defined by the member sender SEND, arrow 21. Although it has been presented herein that the connec- tion is a point-to-point connection, it may be a point-to-multipoint connection as well. The data mirror DM sends a connection request e.g. in a short message of the public land mobile network. The connection request comprises information e.g. on the object re- questing the connection, the subject of the connection and the type of the connection. If the member receiver MS accepts the connection request, s(he) establishes a connection to the data mirror DM, arrow 22. The connection is estab- lished using the selected telecommunication network and connection mode. The telecommunication network is e.g. a public land mobile network, a regular telephone network, or the Internet. Depending on the telecommunication network, it is possible to use a circuit switched connection (e.g. GSM CSD, GSM HSCSD, ISDN, PSTN, etc.) or a packet -switched connection (e.g. GPRS, UMTS, LAN, etc.) as the connection mode. The member receiver MS is identified in the same manner as the member sender SEND. When the identification of all the active members of the community has been completed, the members are sent a notification informing of the virtual connection, arrows 23a and 23b. In this way, there is a virtual point-to-point or a point-to-multipoint connection established between the members, in which the information sent to the data mirror DM is transmitted to all the active members of the same community, arrow 24. Fig. 3 represents one advantageous example of an embodiment in which the method in accordance with the invention may be utilized. As shown by arrow 1, the user concludes a contact with the service provider, and the necessary parameters are defined in the terminal device, relating e.g. to the PDP context. In this example it is assumed that the mobile station MS may be equipped with a specific application, e.g. a Sim Application Toolkit application which analyses the command strings included in the short messages. The definitions of the Sim Application Toolkit can be found e.g. in the specification TS 101 267 V7.3.1 (1999-07) of ETSI (ETSI, European Telecommunications Standards Institute) . When the system DM providing the service detects that, based on the contract defined with the user, there is a need to establish a connection to the mobile station MS, it sends a short message including commands to the mobile station MS, arrow 2. In other words, as the member sender serves the system DM providing the service. At the same time the mobile station MS and the service provider may authenticate each other and if necessary use encryption methods to pro- tect the information being transmitted. The mobile station MS receives a short message as shown by arrow 2. The content of the short message has been shown, by way of example, in Fig. 4. In this example, there is, at the beginning of the short message, an identifier which points to a certain service. A second attribute defines the fact of whose service provider's (herein the Merita intranet) serv- ice is concerned. A third attribute points to the command associated with the service. One such attribute is e.g. a message informing about new mail. As shown by arrow 3, an application installed on the mobile phone, such as e.g. a Sim Application Toolkit, analyses the received short message and establishes a PDP context to the service in question and displays a message on the mobile phone: "New mail, Merita intranet, establish a connection, OK?". If the user accepts this, a connection to the system DM of the service provider is established, arrow 4. When the connection to the system DM of the service provider has been established, the piece of information relating to the service may be transmitted to the mobile station MS, arrow 5. The connection is finally released by the user, mobile station or the service provider. The user need not be connected to the service to retrieve the piece of information, instead the service provider may send a notification informing of new pieces of information to the user. The invention is not restricted merely to the examples referred to above, instead many variations are possible within the scope of the inventive idea defined by the claims.

Claims: CLAIMS 1. A method for establishing a data connection between a terminal device of a public land mobile network and a terminal device of another public land mobile network or a terminal device of some other telecommunication network or some other component, c ha r a c t e r i z e d in that the method further comprises the steps of: a) registering in the data mirror a community which consists of one or more members; b) establishing a connection from the member sender of the information to the data mirror; c) sending a connection request to one or more member receivers of the community; and if the member receiver wishes to establish a connection, then d) establishing a telecommunication connection from one or more member receivers to the data mirror; and e) transmitting information between one or more aforementioned members of the community via the data mirror. 2. The method according to claim 1, c h a r a c t e r i z e d in that in conjunction with step a) , to each member of the community, at least one of the following pieces of identification information is attached: a) identifier or password b) IP address, c) MSISDN number, d) port number. 3. The method according to claim 1 or 2 , c h a r a c t e r i z e d in that in conjunction with step b) : requiring of the member sender a predefined piece of identification information for establishing a connection to the data mirror. 4. The method according to claim 1, c h a r a c t e r i z e d in that in conjunction with step b) : defining one or more member receivers to which one wishes to send information. 5. The method according to claim 1, c h a r a c t e r i z e d in that at step c) : sending one or more member receivers of the community a connection request from the data mirror, the connection request containing connection-specific in- formation. 6. The method according to claim 5, c h a r a c t e r i z e d in that the connection-specific information contains at least one of the following: a) the object requesting the connection b) subject of the connection, c) connection type. 7. The method according to claim 1 or 5, c h a r a c t e r i z e d in that the connection request is transmitted in a short message of the public land mobile network. 8. The method according to claim 1, c h a r a c t e r i z e d in that in conjunction with step d) : requiring of the member receiver a predefined piece of identification information for establishing a connection to the data mirror. 9. The method according to claim 1, c h a r a c t e r i z e d in that the connection type of step b) or step d) is packet-switched or circuit-switched. 10. The method according to claim 1, c h a r a c t e r i z e d in that a member may belong to one or more communities. 11. The method according to claim 1, c h a r a c t e r i z e d in that the information passed through the data mirror is virus-checked. 12. The method according to claim 1, c h a r a c t e r i z e d in that the information to be transmitted via the data mirror is filtered prior to transmitting the aforementioned information to a member of the community. 13. The method according to claim 1, c h a r a c t e r i z e d in that the information going through the data mirror is compressed prior to sending the aforementioned information to a member of the community. 14. The method according to claim 1, c h a r a c t e r i z e d in that a member-specific profile is generated to the member, the profile containing information on at least one of the following: a) allowed connection types, b) allowed protocols, c) allowed applications, d) content preferences, e) quality requirements of the connection. 15. A system for establishing a data connection between a terminal device of a public land mobile network and a terminal device of another public land mobile network or a terminal device of some other telecommunication network or some other component, which system comprises: a public land mobile network (PLMN) ; a telecommunication network (CN) ; a member sender (SEND) who is in connection to the public land mobile network (PLMN) or to the telecommunication network (CN) ; one or more member receivers (MSI, MS2, ...MSn) , which receiver is in connection to the public land mo- bile network (PLMN) or to the telecommunication network (CN) ; c h a r a c t e r i z e d in that a) the system comprises a data mirror (DM) for registering a community which consists of one or more members, and which data mirror (DM) is connected (DM) to the public land mobile network (PLMN) and/or to the telecommunication network (CN); b) the member sender (SEND) and the member receiver (MSI, MS2, ...MSn) comprise connection means (CM) for establishing a connection to the data mirror (DM) ; c) the data mirror (DM) comprises connection means (MM) for sending a connection request to one or more member receivers of the community; and d) the data mirror (DM) comprises information means (IM) for transmitting information between one or more members of the aforementioned community. 16. The system according to claim 15, c h a r a c t e r i z e d in that the data mirror (DM) comprises virus checking means (VDM) for checking the information going through the data mirror. 17. The system according to claim 15 or 16, c h a r a c t e r i z e d in that the data mirror (DM) comprises a filter (FIL) for filtering the information going through the data mirror (DM) . 18. The system according to any one of the preceding claims 15, 16 or 17, c ha r a c t e r i z e d in that the data mirror (DM) comprises a compressor (CMP) for compressing the information going through the data mirror (DM) . 19. The system according to any one of the preceding claims 15, 16, 17 or 18, c h a r a c t e r i z e d in that the data mirror (DM) comprises a database (DB) , or there is a connection from the data mirror (DM) to the database (DB) , to which information relating to the members of the community is saved. 20. The system according to any one of the preceding claims 15, 16, 17, 18 or 19, c h a r a c - t e r i z e d in that the public land mobile network (PLMN) is a GSM network. 21. The system according to any one of the preceding claims 17, 18 or 19, c h a r a c t e r i z e d in that the public land mobile network (PLMN) is a GPRS network. 22. The system according to any one of the preceding claims 15, 16, 17, 18 or 19, c ha rac t e r i z e d in that the public land mobile network (PLMN) is a UMTS network. 23. The system according to any one of the preceding claims 15, 16, 17, 18, 19, 20, 21 or 22, c ha r a c t e r i z e d in that the telecommunication network (CN) is an Internet network.

Inventors: JOKELA HARRI, JULKUNEN MIKA, KESKI-HEIKKILAE MIKA, JOKELA, HARRI, JULKUNEN, MIKA, KESKI-HEIKKILAE, MIKA
Applicants: JOKELA HARRI, JULKUNEN MIKA, KESKI HEIKKILAE MIKA, SONERA OYJ, JOKELA, HARRI, JULKUNEN, MIKA, KESKI-HEIKKILAE, MIKA
Application year: 2001
Main classification: H04L12
IPC codes: H04L12, H04L29, H04W8, H04W76