Abstract: The invention relates to a method and system for authenticating a mobile network node in a Wireless Local Area Network, wherein the mobile network node requests access to the WLAN at an access point. Within a closed first network region, before authentication all network protocol layers up to the Layer 3 protocol layer (L3) are set up. An authenticator based on Extensible Authentication Protocol (EAP) is generated on the Web server as captive portal and the Layer 3 protocol layer between the authenticator and the mobile network node comprising an EAP peer is extended bidirectionally by means of a defined bit sequence. In case of an access request, the Web server transmits an authentication stimulus to the mobile node by encoding an EAP message request and transmitting it in the Layer 3 protocol layer by means of the defined bit sequence.

Abstract: A method and system for authenticating a mobile network node in a Wireless Local Area Network (WLAN), wherein the mobile network node requests access to the WLAN at an access point. Within a closed first network region, before authentication all network protocol layers up to the Layer 3 protocol layer are set up. An authenticator based on Extensible Authentication Protocol (EAP) is generated on the Web server as a captive portal and the Layer 3 protocol layer between the authenticator and the mobile network node including an EAP peer is extended bidirectionally by a defined bit sequence. In case of an access request, the Web server transmits an authentication stimulus to the mobile node by encoding an EAP message request and transmitting it in the Layer 3 protocol layer by the defined bit sequence.

Abstract: A method for setting up a data link including requesting an identity of an IP network node by a registration module, transmitting an International Mobile Subscriber Identity (IMSI) stored on a Subscriber Identity Module (SIM) card of the IP network node to the registration module, storing the received IMSI in a user database of the registration module, complementing an IP data channel to form signal and data channels of a GSM network by a signaling gateway module, using the complemented IP data channel as a basis for generating the necessary SS7/MAP functions for authenticating the IP network node, authenticating the IP network node by using the IMSI of the SIM card of the IP network node, receiving an entry in the user database of the registration module upon successful authentication, and setting up a data link to at least some of the network nodes.

Abstract: A method for setting up a data link including the steps of requesting an identity of an IP network node by a registration module; transmitting an International Mobile Subscriber Identity (IMSI) stored on a Subscriber Identity Module (SIM) card of the IP network node to the registration module, storing the received IMSI in a user database of the registration module, complementing an IP data channel to form signal and data channels of a GSM network by a signaling gateway module, using the complemented IP data channel having GSM data as a basis for generating the necessary SS7/MAP functions for authenticating the IP network node, authenticating the IP network node by using the IMSI of the SIM card of the IP network node, receiving an appropriate entry in the user database of the registration module upon successful authentication, and setting up a data link to the at least some of the network nodes by the control module of the central connecting unit.

Abstract: A method and system for content-based billing in IP-networks, carry out and transmit to a control gateway module the authentication and/or service authorization of an IP-node based on the IMSI of the SIM card of the node for HLR and/or VLR of a GSM network and guide the access of the IP node to the content of a network content provider through said control gateway module, control involved costs by means of the nodule on the base of the access target address, detect call detail records according to the IP-node services by a core engine module, detect at least the identity of the IP-node and/or the time and/or a provider of the required services by means of the call detail records during access to the control gateway module, transmit the data to the billing module and compute call detail records and/or clearing data based thereon and/or TAP files through the billing system of a service provider or a financial institution. The disclosure relates, in particular to the mobile IP nodes in heterogeneous networks.

Abstract: A subscriber, who logs into a visited communication network (VPMN), in particular a mobile network, by means of his communication terminal (2) and his identification module (SIM) connected thereto, is transmitted, automatically or upon request, (S1) a subscriber identification (IMSI-P) from the number range of the visited communication network (VPMN) (S2). The received subscriber identification (IMSI-P) from the number range of the visited communication network (VPMN) is stored and activated in the identification module (SIM) of the subscriber. The subscriber can afterwards log into the visited communication network (VPMN) as a local subscriber.

Abstract: The invention relates to a method for automatic roaming between heterogeneous WLANs and/or GSM/GPRS/UMTS networks, in which method, for authentication, a mobile IP node (20) requests access to the WLAN at an access point (21, 22), in which method, upon request from the access server (23), the mobile IP node (20) transmits an IMSI stored on a SIM card (201) of the mobile IP node (20) to the access server (23), and in which method, based on the IMSI, using information stored in an SIM user database (34), the logic IP data channel of the WLAN is supplemented user-specifically towards corresponding GSM data for signal and data channels of a GSM network, and the authentication of the IP nodes (20) is carried out in an HLR (37) and/or VLR (37) of a GSM network.

Abstract: The invention relates to a method and system for recording and billing of services during roaming of a mobile IP node (20) in heterogeneous WLANs, in which first call detail records are transmitted from an access server (23/1001) to a billing module (1003) and second call detail records from the access server to a proxy module (1002). By means of a clearing module (1004), the obtained service is billed (1016) at a provider (1008) of a fixed network (1007) and/or TAP files (1017) are transmitted to a GSM (1005) service provider (1006) for billing.