Abstract: A method for setting-up a data connection during a group voice service between several group members as a user of a mobile communication network. In a first method, functions of an IP multimedia subsystem (IMS) are used and a session initiation protocol (SIP) and a controlled data connection between an emitter, a terminal and one or several receivers is produced. Each user is allocated to a group voice service identity (VGCS-ID) an IMS group identity (IMS group ID) and is routed to an application server in the IMS with the aid of the user. A data group voice service is developed between the users. In a second method, each user is routed to the service nodes via GPRS using a group voice service identity (VGCS-ID) and an IP address of a service node, which acts as a relay and a data group voice service is carried out between the users.

Abstract: The invention relates to a method for securing IP connections with a combinatory connection of a communication network of a first network operator with a communication network of at least one second network operator using the Session Initiation Protocol, SIP. This method is based on the fact that portions of an SIP message, but at least the information necessary for the combinatory connection of the networks, is transmitted in encrypted form between a transmission channel of the first network operator and a reception channel of the second network operator.

Abstract: A method for routing streams of traffic in IP networks, particularly in mobile IP networks. A plurality of streams of traffic to be transmitted are routed such that they are transmitted in one carrier/context. The streams of traffic having different destination networks are merged and are transmitted from a terminal via one carrier/context to a network access node in the IP network. They are routed from there to respective destination networks and devices.

Abstract: The invention at hand involves a method and an arrangement for optimizing the operational times and cell exchange performance of mobile terminals in a mobile communication network having adjacent radio cells. The mobile terminal temporarily stores network specific characteristics for adjacent radio cells which are not suitable for cell exchange when the mobile communication network is in operation and it uses said characteristics as decision criteria for cell exchange, and said information is used, in particular, to exclude said adjacent radio cells from additional radio technical measurements and identification methods. By implementing the terminal performance according to the inventive method, it is possible to significantly increase the operational times and the cell exchange performance of a mobile terminal in specific situations and to improve the service for a mobile radio customer.

Abstract: An IP Multimedia Subsystem, IMS, for providing a service via a network to at least one subscriber, the system comprising: at least a first proxy function and a first server function for handling messages with a first protocol, a subscriber database connected via a first interface to the server function, at least a second proxy function and a second server function for handling messages with a second protocol, the second server functionally is connected via a second interface to the database.

Abstract: A method for guaranteeing the quality of services in packet-switching radio communications networks. The radio access network (RAN) and the core network (CN) use the quality of service information independently of one another, without signalling individual parameters, in order to guarantee the transmission of packets in the uplink and downlink according to the quality of service. This is achieved exclusively using local settings that have been configured for individual TCLs, permitting a radical reduction in complexity compared to conventional methods. The method is further simplified by the described interlinking of different tasks or the linking of such tasks to an existing data transmission.

Abstract: The invention relates to a method and a device for forwarding short messages from a transmitter (24) to a target number of a receiver (26) in GSM/UMTS mobile radio networks, wherein the target number of the receiver (26) is replaced by a forwarding call number before establishing routing information required for delivery of the short message in a service node (10) and delivery of the short message to the forwarding call number is carried out.

Abstract: The invention relates to a method for exchanging messages in a mobile radio system by means of a convergent messaging system, which allows an exchange of messages between the terminals of two or more users. According to the invention, a message thread is detected by one of the terminals as soon as a terminal receives a response to a previously sent message, wherein the detection of a message thread by this terminal triggers a recording of the message exchange in the convergent messaging system.

Abstract: A method for preparing a chip card for electronic signature services. According to said method, data is exchanged between a chip card user and a signature portal, an asymmetric pair of keys and a signature PIN that is associated with the asymmetric pair of keys being generated on the chip card by means of a software application which can be executed on the chip card, and the chip card communicating the signature PIN to the user.

Abstract: A method for carrying out a Push-to-Talk communication in a digital and/or analog telephone network, including an interface for a semi-duplex communication between a Push-to-Talk server and the analog or digital telephone network and the analog or digital network. The interface uses a communication node or group system as computer and carries out a communication in a transmission channel with automatic directional switching in an analog or digital telephone network in the direction of an available Push-to-Talk server, the analog or digital telephone network being designed as an audio and control interface in the direction of the operating means.

Abstract: A robust OCR system requiring little computing capacity is obtained by first carrying out an adaptive pre-processing optimised in terms of pixel groups, which analyses the image in line segments. The most significant difference compared to previously known methods is that there is no longer a direct pattern comparison, instead the line segments are gone over in as optimum a manner as possible. The corresponding character is then deduced from the sequence of movements. As this sequence of movements can be scaled well and described in a relatively simple manner, this technique is especially suitable for mobile use. The sequence of movements of know characters is stored in a search word, such that the letters can be directly deduced from the movement. A dictionary/lexicon can also be used. If words are recognized by means of the dictionary/lexicon, the recognized letters can be used for an even more optimized character font identification.

Abstract: The invention relates to a method for real time credit calculation of differing loyalty programs based on telephone usage of a user and use of IP-based multimedia sub system (IMS) services, wherein statistical data for the user is recorded and stored in a databank by means of an OSAS (Online Statistic Advertisement Server) service. The invention is characterized by storage of loyalty profiles in the LPF, registration of the customer in the IMS, start up of a service by the customer/user, contacting the OSAS in real time via the HSS profile, recording the statistics in real time for the service such as, for example, type, time spans and similar, triggering the OLS based on the HSS profile, startup of the interfaces by the OLS, use of operator systems through the OLS and provision of the service after contacting the OLS.

Abstract: A method for representing a virtual keyboard on the display of a mobile terminal, as for example a cell phone, wherein the mobile terminal comprises a camera for capturing image data, a display for representing the image data and a keyboard for selecting menu functions or for inputting, for example, a text message. The keyboard is designed as a virtual keyboard on the display of the mobile terminal and a cursor represented on the virtual keyboard is designed to be moveable, wherein the cursor moves according to the movements of the mobile terminal in the spatial axes to the corresponding keyboard field of the virtual keyboard.

Abstract: The invention relates to a method for transmitting messages from a user application of a subscriber to a user application of another subscriber with the aid of the Multimedia Messaging Service MMS, the message being in the format of an external application and is identified as such by an application identifier that is transmitted along with the message. According to the invention, the multimedia message service is used by the external application as a transport system for transmitting the message. The message is identified by a network element of the Multimedia Messaging Service using the application identifier and is transmitted in an unmodified state via the Multimedia Messaging Service and forwarded to the external application. The invention also relates to a subscriber terminal and a communication system for carrying out said method.

Abstract: The invention relates to a method for performing a paging call in a cellular mobile communications system, wherein a terminal device is operated in a first radio cell of the mobile communications system provided with radio signals from a radio transmission device, said terminal device being in an idle state, and data to be transmitted to the terminal device are present in a data transmission device of the mobile communications system. The invention is characterized in that upon detection of a loss of service or fault in the radio transmission device, measures for handling the loss of service/fault in said radio transmission device are taken, with the goal of restoring the accessibility of the mobile radio device for which said radio transmission device is the last known radio transmission device.

Abstract: The invention relates to a method for service identification for convergent messaging systems, in which a convergent message is interchanged between a sender and at least one receiver (13) via a communication network (10). The invention provides for the message structure of the convergent message to have an information element added to it which contains information about the message type or relating to the handling of the message.

Abstract: A method for preventing ping-pong handover in mobile radio networks having a multiplicity of stationary base stations at a distance from one another, and also stationary and/or moveable mobile radio stations, such as mobile radio telephones, which are in the transmission and reception range of the base stations. Repeated unwanted handover of a mobile radio station in the connected/active mode from a source base station to a destination base station is reduced or prevented. System messages are transmitted between the mobile radio stations and the base station, wherein the system messages for initiating the handover are used to transmit historical information relating to handovers which have already been performed, that information being used to automatically ascertain and set optimum operating parameters for the mobile radio stations and/or at least one of the base stations which are involved.

Abstract: The invention relates to a method for establishing a communication link between a communication system and a remote station by means of a communication network, whereby, in the context of the communication link, a parameterized selection of a remote station is made from several available remote stations by utilizing the name resolution mechanism. The communication forms a logical name with the help of parameters used for selecting a remote station or embeds the parameters in a logical name and transmits the formed logical name to a name resolution mechanism located in the communication network. The name resolution mechanism selects a remote station on the basis of the afore-mentioned logical name and a selection function and feeds back the communication address thereof.

Abstract: The present invention relates to a method for generating a space-related traffic database for a radio network which comprises a plurality of radio cells which can each be assigned to a group of radio cells, with a region to be mapped being subdivided into area elements by a grid and each of the area elements being allocated a respective assignment probability for each of the radio cells which supply the area element and a land-use class from amongst a finite group of land-use classes by generation being achieved by a minimization process in which the distance between the measured traffic of a radio cell and the predicted traffic of the radio cell is minimized for each radio cell, with the traffic, which is to be predicted, of a respective radio cell being set equal to the sum of area elements which are weighted by land use class-specific and group-specific coefficients, which area elements of the respective radio cell for a respective land-use class and for a respective group of radio cells are produced from

Abstract: The invention relates to a method and system for extending a known push to talk service in such a way that novel application capabilities are obtained. According to said invention, the use of said push to talk techniques is carried out by adding a functionality making it possible to transmit other forms of data besides speech.