EP1336311A1 - Method for distributing customized data for mobile telephone network - Google Patents

Method for distributing customized data for mobile telephone network

Info

Publication number
EP1336311A1
EP1336311A1 EP01978556A EP01978556A EP1336311A1 EP 1336311 A1 EP1336311 A1 EP 1336311A1 EP 01978556 A EP01978556 A EP 01978556A EP 01978556 A EP01978556 A EP 01978556A EP 1336311 A1 EP1336311 A1 EP 1336311A1
Authority
EP
European Patent Office
Prior art keywords
information
sim card
messages
software
mobile telephone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP01978556A
Other languages
German (de)
French (fr)
Inventor
Fabrice Segura
Djellali Mokhtari
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Swap Com
Original Assignee
Swap Com
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Swap Com filed Critical Swap Com
Publication of EP1336311A1 publication Critical patent/EP1336311A1/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/02—Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/03—Protecting confidentiality, e.g. by encryption
    • H04W12/037—Protecting confidentiality, e.g. by encryption of the control plane, e.g. signalling traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/12—Messaging; Mailboxes; Announcements
    • H04W4/14—Short messaging services, e.g. short message services [SMS] or unstructured supplementary service data [USSD]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/40—Connection management for selective distribution or broadcast

Definitions

  • the present invention relates to a method for broadcasting "personalized" information in the form of text messages to users of a mobile telephone network.
  • This method implements the multicast functions (Cell Broadcast) specific to these networks, but allows the personalization of the information actually available to the user of the terminal, and the control by the service operator of access to this. information, in particular to allow marketing and billing to the end user.
  • Cell Broadcast multicast functions
  • SMS short messages
  • SMS messages are transmitted for a single recipient mobile phone. If the same message must be transmitted to many users, it is necessary to transmit as many SMS, which is not viable if the message must be received by a large number of subscribers, because of the capacity limitations of the telephone networks. mobile to carry such traffic.
  • Mobile phone networks support another method of sending messages to mobiles: “Cell Broadcast", which allows the same message to be sent to all mobile phones in a cell, or to all mobile phones of a network simultaneously. However, there is nothing to control access to this information. It is therefore not possible to transmit by this means information reserved for a limited population of subscribers.
  • document GB A 2327567 already discloses a method using simultaneously a broadcast of messages by "Cell Broadcast", an encryption of the information broadcast, and its decryption on board the telephone by software which thereby manages the access to information.
  • this process has a certain number of drawbacks, in particular the use of insecure encoding techniques, the transmission of encryption keys on the network, the absence of a mechanism for tracing operations, and the difficulty of implementation. because this process requires modifications on certain network equipment.
  • the present invention aims to improve such a method, in particular improving the encryption technique for controlling access to the information broadcast, and security.
  • the subject of the invention is a method making it possible to broadcast "personalized" information in the form of text messages to the users of a mobile telephone network, with simultaneous use of the multicast functions "Cell Broadcast” for broadcasting, encryption of the information disseminated, and its decryption on board the telephone by software which therefore manages access to the information, this process being essentially characterized in that the keys of said encryption are stored by the operator , either in the mobile phone, or in the SIM card, and in any case out of the reach of the user.
  • the method of the invention implements the encryption of the information before it is transmitted in multicast, and its decryption by means of software on board the mobile phone, using "strong" encryption techniques where the encryption keys do not are not accessible to users. All users of the mobile telephone network will potentially be able to configure their telephone to receive these messages, but will not therefore have access to the information.
  • the list of information that this software decrypts and makes available to the user can be configured remotely, by sending another message also encrypted, containing in particular the list of information to be decrypted.
  • tracking functionalities SMS messages, and in particular the acknowledgment of their effective delivery to the mobile phone, allow a control of the good reception of the configuration information and guarantee that the invoicing of the access to the information will correspond actually to what will be received by the user.
  • Each of the information messages (1) which must be broadcast by this process are transmitted on one of the "channels" of "Cell Broadcast” via the CBC (Cell Broadcast Center) (3) of the network by a computer system ( 2) managed by the operator, who encrypts these messages using a “strong” encryption method such as the DES method. All users of the mobile telephone network (4) can potentially configure their mobile telephone (5) to receive these messages, but will not therefore have access to the information. This is, in particular, a mobile phone (5) with a "SIM card” (6), as specified below.
  • SMSC Short Message Service Center
  • SMS message tracking functionalities and in particular the acknowledgment of their effective delivery to the mobile phone (5), allows a check of the good reception of the configuration information and the good taking into account by the phone of these new conditions. This will guarantee that the billing for access to information will effectively correspond to what will be received by the user.
  • This SMS will be decrypted and interpreted by software installed in the mobile phone (5).
  • This software can be a smart card or "SIM card” application (6) in the case of GSM or UMTS networks, or must be integrated into the on-board software of the telephone, during its construction, for PCS networks.
  • the software in question on board the phone will decrypt all "Cell Broadcast" messages received by the phone and to which the user has subscribed, according to the instructions previously received in the configuration SMS. It will warn the user of their reception (by a beep for example), and will allow their reading to the user.
  • the embodiment is as follows: The aforementioned software is integrated into the SIM card.
  • the dialogue between a terminal and its SIM card described in the ETSI GSM standards 1 1 .1 1 and 1 1 .14, allows the card to receive SMS which are specifically intended for it (the procedure, described in the ETSI GSM standards 03.38 and 03.40, consists in sending a message called class "2").
  • the reception of an SMS makes it possible to trigger computer processing on the card, and this processing will therefore consist of the chip positioning reception expectations for all the "Cell Broadcast" channels corresponding to the desired configuration.
  • the SIM card software When receiving a message, the SIM card software warns the user (typically by a beep), stores the message, and makes it available to the user in one of the additional menus of the phone, set works via the software installed on board the SIM card.
  • the use of compression algorithms such as that described in the GSM 03.42 standard makes it possible to send even longer messages.
  • This process makes it possible to offer information services "à la carte”, and on subscription, to millions of users simultaneously, where individualized sending, using SMS, no longer makes it possible, due to limitations in network bandwidth.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephonic Communication Services (AREA)

Abstract

The invention concerns a method for distributing customized data in the form of text messages to users of a mobile telephone network (4). Said method uses multicast (Cell Broadcast) functions specific to said networks, but enables customization of effectively available information for the terminal user, and control by the service operator of access to said information, in particular for marketing and billing to the final user. To achieve this, the method uses encryption of the broadcast information (1), and its decryption on the mobile telephone (5), with a software which thereby manages access to the information (1). The encryption keys are stored by the operator, either in the mobile telephone (5), or in the SIM card, and in all cases, outside the reach of the user.

Description

Procédé de diffusion d'informations personnalisées pour réseau de téléphonie mobile Method for broadcasting personalized information for a mobile telephone network
La présente invention concerne un procédé permettant de diffuser des informations "personnalisées" sous forme de messages texte aux utilisateurs d'un réseau de téléphonie mobile. Ce procédé met en oeuvre les fonctions de multidiffusion (Cell Broadcast) propres à ces réseaux, mais permet la personnalisation de l'information effectivement disponible pour l'utilisateur du terminal, et le contrôle par l'opérateur du service de l'accès à cette information, notamment pour en permettre la commercialisation et la facturation à l'usager final.The present invention relates to a method for broadcasting "personalized" information in the form of text messages to users of a mobile telephone network. This method implements the multicast functions (Cell Broadcast) specific to these networks, but allows the personalization of the information actually available to the user of the terminal, and the control by the service operator of access to this. information, in particular to allow marketing and billing to the end user.
La diffusion d'informations "texte", dans un réseau de téléphonie mobile, peut se faire grâce à l'envoi de messages courts (SMS) . Les messages SMS sont transmis pour un seul téléphone mobile destinataire. Si un même message doit être transmis à de nombreux utilisateurs, il faut transmettre autant de SMS, ce qui n'est pas viable si le message doit être reçu par un grand nombre d'abonnés, à cause des limitations en capacité des réseaux de téléphonie mobile à écouler de tels trafics. Les réseaux de téléphonie mobile supportent une autre méthode d'envoi de messages à destination des mobiles : Le "Cell Broadcast", qui permet d'envoyer un même message, à tous les téléphones mobiles d'une cellule, ou à tous les téléphones mobiles d'un réseau simultanément. En revanche, rien ne permet de contrôler l'accès à cette information. Il n'est donc pas possible de transmettre par ce moyen une information réservée à une population limitée d'abonnés.The dissemination of "text" information in a mobile phone network can be done by sending short messages (SMS). SMS messages are transmitted for a single recipient mobile phone. If the same message must be transmitted to many users, it is necessary to transmit as many SMS, which is not viable if the message must be received by a large number of subscribers, because of the capacity limitations of the telephone networks. mobile to carry such traffic. Mobile phone networks support another method of sending messages to mobiles: "Cell Broadcast", which allows the same message to be sent to all mobile phones in a cell, or to all mobile phones of a network simultaneously. However, there is nothing to control access to this information. It is therefore not possible to transmit by this means information reserved for a limited population of subscribers.
Enfin, on connaît déjà par le document GB A 2327567 un procédé utilisant simultanément une diffusion des messages par "Cell Broadcast", un cryptage de l'information diffusée, et son décryptage à bord du téléphone par un logiciel qui gère de ce fait l'accès à l'information. Toutefois ce procédé présente un certain nombre d'inconvénients, notamment l'utilisation de techniques d'encodage peu sûres, la transmission des clefs de cryptage sur le réseau, l'absence de mécanisme de traçabilité des opérations, et la difficulté de mise en oeuvre car ce procédé requiert des modifications sur certains équipements du réseau. La présente invention vise à perfectionner un tel procédé, en améliorant notamment la technique de cryptage pour le contrôle à l'accès à l'information diffusée, et la sécurité.Finally, document GB A 2327567 already discloses a method using simultaneously a broadcast of messages by "Cell Broadcast", an encryption of the information broadcast, and its decryption on board the telephone by software which thereby manages the access to information. However, this process has a certain number of drawbacks, in particular the use of insecure encoding techniques, the transmission of encryption keys on the network, the absence of a mechanism for tracing operations, and the difficulty of implementation. because this process requires modifications on certain network equipment. The present invention aims to improve such a method, in particular improving the encryption technique for controlling access to the information broadcast, and security.
A cet effet, l'invention a pour objet un procédé permettant de diffuser des informations "personnalisées" sous forme de messages texte aux utilisateurs d'un réseau de téléphonie mobile, avec utilisation simultanée des fonctions de multidiffusion "Cell Broadcast" pour la diffusion, du cryptage de l'information diffusée, et de son décryptage à bord du téléphone par un logiciel qui gère de ce fait l'accès à l'information, ce procédé étant caractérisé essentiellement en ce que les clefs dudit cryptage sont stockées par l'opérateur, soit dans le téléphone mobile, soit dans la carte SIM, et dans tous les cas hors de la portée de l'utilisateur.To this end, the subject of the invention is a method making it possible to broadcast "personalized" information in the form of text messages to the users of a mobile telephone network, with simultaneous use of the multicast functions "Cell Broadcast" for broadcasting, encryption of the information disseminated, and its decryption on board the telephone by software which therefore manages access to the information, this process being essentially characterized in that the keys of said encryption are stored by the operator , either in the mobile phone, or in the SIM card, and in any case out of the reach of the user.
Ainsi le procédé de l'invention met en œuvre le cryptage des informations avant leur transmission en multidiffusion, et leur décryptage au moyen d'un logiciel à bord du téléphone mobile, en utilisant des techniques de cryptage "fortes" où les clefs de cryptage ne sont pas accessibles aux utilisateurs. Tous les utilisateurs du réseau de téléphonie mobile pourront potentiellement paramétrer leur téléphone de manière à recevoir ces messages, mais n'auront pas de ce fait accès à l'information. La liste des informations que ce logiciel décrypte et met à disposition de l'utilisateur est configurable à distance, par l'envoi d'un autre message également crypté, contenant notamment la liste des informations à décrypter. Chaque utilisateur du service désirant "s'abonner" aux informations diffusées, ou modifier les conditions de son abonnement (accès à d'autres informations), devra le faire via un système informatique géré par l'opérateur, ce qui permettra la facturation de l'information à laquelle l'utilisateur se sera abonné.Thus the method of the invention implements the encryption of the information before it is transmitted in multicast, and its decryption by means of software on board the mobile phone, using "strong" encryption techniques where the encryption keys do not are not accessible to users. All users of the mobile telephone network will potentially be able to configure their telephone to receive these messages, but will not therefore have access to the information. The list of information that this software decrypts and makes available to the user can be configured remotely, by sending another message also encrypted, containing in particular the list of information to be decrypted. Each user of the service wishing to "subscribe" to the information disseminated, or modify the conditions of his subscription (access to other information), must do so via a computer system managed by the operator, which will allow invoicing of the information to which the user will have subscribed.
L'utilisation des fonctionnalités de suivi, de messages SMS, et notamment l'accusé de leur remise effective au téléphone mobile, permettent un contrôle de la bonne réception des informations de configuration et garantissent que la facturation de l'accès à l'information correspondra effectivement à ce qui sera reçu par l'utilisateur.The use of tracking functionalities, SMS messages, and in particular the acknowledgment of their effective delivery to the mobile phone, allow a control of the good reception of the configuration information and guarantee that the invoicing of the access to the information will correspond actually to what will be received by the user.
Ce procédé qui ne repose que sur l'emploi des mécanismes normalisés des réseaux GSM et UMTS, ou d'un système informatique externe à ce réseau et d'un logiciel a bord de la carte SIM des terminaux permet de proposer des services d'informations "à la carte", et sur abonnement, à des millions d'utilisateurs simultanément, là ou un envoi individualisé, en utilisant les SMS, ne permet plus de le faire, à cause des limitations en bande passante des réseaux.This process, which is only based on the use of standardized mechanisms of GSM and UMTS networks, or of a computer system external to this network and of software on board the SIM card of the terminals makes it possible to offer information services. "à la carte", and on subscription, to millions of users simultaneously, where an individual sending, using SMS, no longer makes it possible, because of the bandwidth limitations of the networks.
Le dessin annexé illustre l'invention. En référence à la figure unique de ce dessin, le procédé proposé par cette invention pour résoudre ce problème est le suivant :The accompanying drawing illustrates the invention. With reference to the single figure of this drawing, the method proposed by this invention for solving this problem is as follows:
- Chacun des messages d'information ( 1 ) qui doivent être diffusés par ce procédé sont transmis sur l'un des "canaux" du "Cell Broadcast" via le CBC (Cell Broadcast Center) (3) du réseau par un système informatique (2) géré par l'opérateur, qui crypte ces messages en utilisant un procédé de cryptage « fort » tel que le procédé DES. Tous les utilisateurs du réseau de téléphonie mobile (4) pourront potentiellement paramétrer leur téléphone mobile (5) de manière à recevoir ces messages, mais n'auront pas de ce fait accès à l'information. Il s'agit ici, notamment, d'un téléphone mobile (5) à "carte SIM" (6), comme précisé plus bas.- Each of the information messages (1) which must be broadcast by this process are transmitted on one of the "channels" of "Cell Broadcast" via the CBC (Cell Broadcast Center) (3) of the network by a computer system ( 2) managed by the operator, who encrypts these messages using a “strong” encryption method such as the DES method. All users of the mobile telephone network (4) can potentially configure their mobile telephone (5) to receive these messages, but will not therefore have access to the information. This is, in particular, a mobile phone (5) with a "SIM card" (6), as specified below.
- Chaque utilisateur du service (7) désirant "s'abonner" aux informations diffusées, ou modifier les conditions de son abonnement (accès à d'autres informations) devra le faire via le même système informatique (2) géré par l'opérateur. - Ce système (2), une fois les nouvelles conditions prises en compte (notamment la liste des rubriques d'information auxquelles l'utilisateur s'est abonné), va télécharger via le SMSC (Short Message Service Center) (8) du réseau, les choix de l'utilisateur dans son téléphone (5) grâce à l'envoi d'un message SMS (qui sera appelé "SMS de configuration") . Ce SMS sera crypté de la même manière que les messages d'information, afin de rendre impossible à quiconque hormis l'opérateur du service de modifier la liste des messages dont la réception est autorisée.- Each user of the service (7) wishing to "subscribe" to the information disseminated, or modify the conditions of his subscription (access to other information) must do so via the same computer system (2) managed by the operator. - This system (2), once the new conditions have been taken into account (in particular the list of information sections to which the user has subscribed), will download via the SMSC (Short Message Service Center) (8) from the network , the choices of the user in his phone (5) by sending an SMS message (which will be called "configuration SMS"). This SMS will be encrypted in the same way as information messages, in order to make it impossible for anyone except the service operator to modify the list of messages whose reception is authorized.
L'utilisation des fonctionnalités de suivi de messages SMS, et notamment l'accusé de leur remise effective au téléphone mobile (5), permet un contrôle de la bonne réception des informations de configuration et de la bonne prise en compte par le téléphone de ces nouvelles conditions. Ceci permettra de garantir que la facturation de l'accès à l'information correspondra effectivement à ce qui sera reçu par l'utilisateur.The use of SMS message tracking functionalities, and in particular the acknowledgment of their effective delivery to the mobile phone (5), allows a check of the good reception of the configuration information and the good taking into account by the phone of these new conditions. This will guarantee that the billing for access to information will effectively correspond to what will be received by the user.
- Ce SMS sera décrypté et interprété par un logiciel installé dans le téléphone mobile (5) . Ce logiciel pourra être une application de la carte à puce ou "carte SIM" (6) dans le cas des réseaux GSM ou UMTS, ou devra être intégré au logiciel embarqué du téléphone, lors de sa construction, pour les réseaux PCS.- This SMS will be decrypted and interpreted by software installed in the mobile phone (5). This software can be a smart card or "SIM card" application (6) in the case of GSM or UMTS networks, or must be integrated into the on-board software of the telephone, during its construction, for PCS networks.
- Le logiciel en question à bord du téléphone décryptera tous les messages "Cell Broadcast" reçus par le téléphone et auxquels l'utilisateur aura souscrit, selon les instructions reçues précédemment dans le SMS de configuration. Il avertira l'utilisateur de leur réception (par un bip par exemple), et permettra leur lecture à l'utilisateur.- The software in question on board the phone will decrypt all "Cell Broadcast" messages received by the phone and to which the user has subscribed, according to the instructions previously received in the configuration SMS. It will warn the user of their reception (by a beep for example), and will allow their reading to the user.
Dans le cas des réseaux GSM et UMTS, où les terminaux sont équipés d'une carte SIM (6), le mode de réalisation est le suivant : Le logiciel précité est intégré dans la carte SIM. Le dialogue entre un terminal et sa carte SIM, décrit dans les normes ETSI GSM 1 1 .1 1 et 1 1 .14, permet à la carte de recevoir des SMS qui lui sont spécifiquement destinées (la procédure, décrite dans les normes ETSI GSM 03.38 et 03.40, consiste à envoyer un message dit de classe "2"). La réception d'un SMS permet de déclencher un traitement informatique sur la carte, et ce traitement consistera donc en ce que la puce positionne des attentes de réception pour tous les canaux "Cell Broadcast" correspondant à la configuration voulue.In the case of GSM and UMTS networks, where the terminals are equipped with a SIM card (6), the embodiment is as follows: The aforementioned software is integrated into the SIM card. The dialogue between a terminal and its SIM card, described in the ETSI GSM standards 1 1 .1 1 and 1 1 .14, allows the card to receive SMS which are specifically intended for it (the procedure, described in the ETSI GSM standards 03.38 and 03.40, consists in sending a message called class "2"). The reception of an SMS makes it possible to trigger computer processing on the card, and this processing will therefore consist of the chip positioning reception expectations for all the "Cell Broadcast" channels corresponding to the desired configuration.
Ces mêmes normes prévoient que la carte SIM reçoit également tous les messages "Cell Broadcast", si ils sont également de "Classe 2", et si ils sont envoyés sur l'un des canaux pour lesquels la carte SIM a demandé la réception en positionnant les numéros de canaux dans le registre EF CBMID, ce qui est fait à l'étape précédente.These same standards provide that the SIM card also receives all "Cell Broadcast" messages, if they are also "Class 2", and if they are sent on one of the channels for which the SIM card has requested reception by positioning the channel numbers in the EF CBMID register, which is done in the previous step.
Lors de la réception d'un message, le logiciel de la Carte SIM prévient l'utilisateur (typiquement par un bip), stocke le message, et le met à la disposition de l'utilisateur dans un des menus additionnels du téléphone, mis en oeuvre via le logiciel installé à bord de la carte SIM. Les fonctionnalités d'agrégation de messages "Cell Broadcast" permettent d'envoyer des messages de 82 * 1 5 = 1 230 octets. L'utilisation d'algorithmes de compression tels que celui décrit dans la norme GSM 03.42 permettent d'envoyer des messages encore plus longs.When receiving a message, the SIM card software warns the user (typically by a beep), stores the message, and makes it available to the user in one of the additional menus of the phone, set works via the software installed on board the SIM card. The "Cell Broadcast" message aggregation functions allow messages of 82 * 1 5 = 1,230 bytes to be sent. The use of compression algorithms such as that described in the GSM 03.42 standard makes it possible to send even longer messages.
On notera que toutes les opérations du procédé sont soit supportées par les mécanismes normalisés des réseaux GSM et UMTS, soit effectuées par un système informatique externe à ce réseau ou le logiciel de la carte SIM (6) des terminaux (5) . La protection du procédé est garantie par l'utilisation de SMS de configuration et de messages "Cell Broadcast" dont le contenu est préalablement crypté, selon les possibilités offertes par les législations en vigueur. Les clefs de cryptage utilisées sont stockées dans le système informatique de l'opérateur du service d'une part, et soit dans la carte SIM (6), soit dans le téléphone mobile (5) d'autre part, et dans tous les cas hors de la portée de l'utilisateur. Ces clefs ne font pas l'objet d'une transmission qui peut être interceptée.It will be noted that all the operations of the method are either supported by the standardized mechanisms of the GSM and UMTS networks, or carried out by a computer system external to this network or the software of the SIM card (6) of the terminals (5). The protection of the process is guaranteed by the use of configuration SMS and "Cell Broadcast" messages whose content is previously encrypted, according to the possibilities offered by the legislation in force. The encryption keys used are stored in the computer system of the service operator on the one hand, and either in the SIM card (6) or in the mobile phone (5) on the other hand, and in all cases out of the reach of the user. These keys are not the subject of a transmission which can be intercepted.
Ce procédé permet de proposer des services d'informations "à la carte", et sur abonnement, à des millions d'utilisateurs simultanément, là où un envoi individualisé, en utilisant les SMS, ne permet plus de le faire, à cause des limitations en bande passante des réseaux.This process makes it possible to offer information services "à la carte", and on subscription, to millions of users simultaneously, where individualized sending, using SMS, no longer makes it possible, due to limitations in network bandwidth.
Les procédures décrites ci-dessus sont applicables aussi dans un réseau PCS si un logiciel au comportement identique est directement implanté dans le téléphone mobile à sa construction, faute de carte à puce dans les terminaux de ce type de réseaux. The procedures described above are also applicable in a PCS network if software with identical behavior is directly installed in the mobile telephone during its construction, for lack of a smart card in the terminals of this type of network.

Claims

REVENDICATIONS
1 - Procédé permettant de diffuser des informations "personnalisées" sous forme de messages texte aux utilisateurs d'un réseau de téléphonie mobile (4), avec utilisation simultanée des fonctions de multidiffusion "Cell Broadcast" pour la diffusion, du cryptage de l'information (1 ) diffusée, et de son décryptage à bord du téléphone mobile (5) par un logiciel qui gère de ce fait l'accès à l'information, caractérisé en ce que les clefs dudit cryptage sont stockées par l'opérateur, soit dans le téléphone mobile (5), soit dans la carte SIM (6), et dans tous les cas hors de la portée de l'utilisateur.1 - Method for broadcasting "personalized" information in the form of text messages to users of a mobile telephone network (4), with simultaneous use of the multicast functions "Cell Broadcast" for broadcasting, encryption of the information (1) broadcast, and its decryption on board the mobile phone (5) by software which therefore manages access to information, characterized in that the keys of said encryption are stored by the operator, either in the mobile phone (5), either in the SIM card (6), and in any case out of the reach of the user.
2 - Procédé selon la revendication 1 , caractérisé en ce que ledit décryptage est réalisé par un logiciel à bord du téléphone mobile (5) configurable à distance, par l'envoi d'un autre message crypté contenant notamment la liste des informations à décrypter.2 - Method according to claim 1, characterized in that said decryption is carried out by software on board the mobile phone (5) configurable remotely, by sending another encrypted message containing in particular the list of information to be decrypted.
3 - Procédé selon la revendication 2, caractérisé en ce que l'usage des fonctionnalités de suivi, de messages SMS, et notamment l'accusé de leur remise effective au téléphone mobile (5), permet un contrôle de la bonne réception des informations de configuration. 4 - Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que, dans le cas de réseaux GSM et UMTS, avec terminaux (5) équipés d'une carte SIM (6), les messages "Cell Broadcast" diffusés pour être traités par la carte SIM, le sont sous la forme de messages dits de "Classe 2", selon la procédure décrite dans les normes des réseaux GSM et UMTS.3 - Method according to claim 2, characterized in that the use of tracking functionalities, SMS messages, and in particular the acknowledgment of their effective delivery to the mobile phone (5), allows a control of the good reception of information from configuration. 4 - Method according to any one of claims 1 to 3, characterized in that, in the case of GSM and UMTS networks, with terminals (5) equipped with a SIM card (6), the "Cell Broadcast" messages broadcast to be processed by the SIM card, they are in the form of so-called "Class 2" messages, according to the procedure described in the standards of the GSM and UMTS networks.
5 - Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que toutes les opérations du procédé sont soit supportées par les mécanismes normalisés des réseaux GSM et UMTS, soit effectuées par un système informatique externe à ce réseau ou le logiciel de la carte SIM (6) des terminaux (5) . 5 - Method according to any one of claims 1 to 4, characterized in that all the operations of the method are either supported by the standardized mechanisms of the GSM and UMTS networks, or carried out by a computer system external to this network or the software of the SIM card (6) of the terminals (5).
EP01978556A 2000-10-18 2001-10-17 Method for distributing customized data for mobile telephone network Withdrawn EP1336311A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0013423 2000-10-18
FR0013423A FR2815509B1 (en) 2000-10-18 2000-10-18 PERSONALIZED INFORMATION SYSTEM ON MOBILE TELEPHONE USING MULTICAST "CELL BROADCAST", AND ACCESS CONTROL SOFTWARE ON BOARD THE TELEPHONE, REMOTE CONTROLLED BY THE SERVICE OPERATOR
PCT/FR2001/003218 WO2002033993A1 (en) 2000-10-18 2001-10-17 Method for distributing customized data for mobile telephone network

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EP1336311A1 true EP1336311A1 (en) 2003-08-20

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WO (1) WO2002033993A1 (en)

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FR2815509B1 (en) 2004-07-23
AU2002210660A1 (en) 2002-04-29
US20040106396A1 (en) 2004-06-03
CN1470141A (en) 2004-01-21
WO2002033993A1 (en) 2002-04-25

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