Abstract: A method for the computer-aided determination of a control variable using context information from one or more units to be controlled is described. This method involves a controller using simulation to ascertain a piece of simulated context information which is used as a control variable, wherein the simulated context information comprises a first variable which represents a presumed state of the one or more units at a given time. The controller compares a received piece of context information, which comprises a second variable which represents the actual state of the unit to be controlled at a time which is before the given time, with the simulated context information and checks whether the simulated context information matches the context information within prescribed limits. In addition, the controller requests a piece of updated context information from one or more units to be controlled if the simulated context information matches the context information at the given time outside the present limits.

Abstract: A query message is received at a first server of a plurality of servers of a first server type, at least part of data contained in the query message is transformed to a transforming result, based on the transforming result and a first lookup table at said first server, a storage location of a respective second lookup table at one of said plurality of servers of said first type is determined, the respective second lookup table is accessed at the determined storage location of the respective second lookup table at one of said plurality of servers of said first type, and an indicator indicating a storage location of data requested by the query message is retrieved from the respective second lookup table.

Abstract: A state change in a network comprising a master server among a plurality of servers is determined, at the master server, a first lookup table is calculated, said first lookup table indicating respective partitions of a second lookup table distributed among active servers of said plurality of servers, the calculated first lookup table is distributed to each active server, and based on the first lookup table, at the master server, a modified partition of the second lookup table is generated.

Abstract: A method for the computer-aided determination of a control variable using context information from one or more units to be controlled is described. This method involves a controller using simulation to ascertain a piece of simulated context information which is used as a control variable, wherein the simulated context information comprises a first variable which represents a presumed state of the one or more units at a given time. The controller compares a received piece of context information, which comprises a second variable which represents the actual state of the unit to be controlled at a time which is before the given time, with the simulated context information and checks whether the simulated context information matches the context information within prescribed limits. In addition, the controller requests a piece of updated context information from one or more units to be controlled if the simulated context information matches the context information at the given time outside the present limits.

Abstract: A system and a method permit P2P services in an IP-based communications network and also permit direct IP-traffic between subscribers in a controlled manner solely for specific P2P applications that are predetermined by the system provider. Other aims are to provide options for carrying out a special billing method for subscribers of P2P services and to enable the detection of the termination of a P2P session of a subscriber in order to withdraw the authorization for the corresponding P2P service in the network of the system provider. The aims are achieved by software containing logic P2P service-specific communication channels in the terminals, each terminal communicating with an index server prior to establishing direct logic communication connections to other terminals in the communications system. The index server then carries out a P2P service-specific access check for each terminal in conjunction with the billing and access check control function.

Abstract: Disclosed is a method for communicating with several users in order to improve the usability of a communication system involving several users.

Abstract: A query message is received at a first server of a plurality of servers of a first server type, at least part of data contained in the query message is transformed to a transforming result, based on the transforming result and a first lookup table at said first server, a storage location of a respective second lookup table at one of said plurality of servers of said first type is determined, the respective second lookup table is accessed at the determined storage location of the respective second lookup table at one of said plurality of servers of said first type, and an indicator indicating a storage location of data requested by the query message is retrieved from the respective second lookup table.

Abstract: A state change in a network comprising a master server among a plurality of servers is determined, at the master server, a first lookup table is calculated, said first lookup table indicating respective partitions of a second lookup table distributed among active servers of said plurality of servers, the calculated first lookup table is distributed to each active server, and based on the first lookup table, at the master server, a modified partition of the second lookup table is generated.

Abstract: The invention relates to a method for controlling the exchange of data between mobile subscribers in a packet-oriented mobile communication network, wherein management of each subscriber occurs at a specific control node (SGSN) of the mobile communication network according to the actual whereabouts of the subscriber inside the mobile communication network; links from/to a mobile communication transmitter device of the mobile subscriber are controlled inside the mobile communication network by the corresponding control node; wherein an address register comprising all of the addresses allocated to mobile subscribers managed by said control node is stored in the control network node; a destination address allocated to the data packets is read out in the control network node from incoming data packets and is compared to the address register by means of a search function; if the destination address is available in the address register, the data packets are exclusively handled by the control node in the mobile comm

Abstract: Method for allowing peer-to-peer data transmission The invention relates to a method for allowing peer-to-peer data transmission between peer communication terminals. In this context, a file (D), for which multiple requests regarding retrieval have already been sent to an index server (IS) by peer communication terminals in the past, is automatically retrieved from a peer communication terminal (P3) providing this file by a storage peer communication terminal (SP). This file (D) is stored in the storage peer communication terminal (SP). The storage peer communication terminal (SP) registers as a provider of this file with the index server (IS). Upon receiving a further request relating to this file (D), the index server provides the requesting peer communication terminal with an address for the storage peer communication terminal in order to allow the requesting peer communication terminal to retrieve the file (D) from the storage peer communication terminal (SP).

Abstract: Peer-to-peer messages supplied from a mobile radio communication network to a peer-to-peer message filter are detected and are supplied to a superpeer computer which is connected to a mobile radio network/fixed network interface computer. The peer-to-peer message filter is disposed in the mobile radio communication network.

Abstract: The invention relates to a method for controlling the exchange of data between mobile subscribers in a packet-oriented mobile communication network, wherein management of each subscriber occurs at a specific control node (SGSN) of the mobile communication network according to the actual whereabouts of the subscriber inside the mobile communication network; links from/to a mobile communication transmitter device of the mobile subscriber are controlled inside the mobile communication network by the corresponding control node; wherein an address register comprising all of the addresses allocated to mobile subscribers managed by said control node is stored in the control network node; a destination address allocated to the data packets is read out in the control network node from incoming data packets and is compared to the address register by means of a search function; if the destination address is available in the address register, the data packets are exclusively handled by the control node in the mobile comm

Abstract: A method for billing charges in a communications network with point-to-point connections. The method includes transmitting a message from a service-receiving end point to a service-switching network node which buffers the message, transmitting service-related data from a service providing end point directly to the service receiving end point, transmitting a message from the service-providing end point) to the service-switching network node, comparing the received messages by the service-switching network node and transmitting a charge credit to the service-providing end point depending on the result of the comparison. The invention also includes a device for executing the above method.

Abstract: The invention relates to a method for separating IP packets which can be allocated to specific groups in a packet-based mobile radio network. All IP packets entering into the mobile radio network are tested in a first authorized network element of the mobile radio network with respect to allocation to at least one group. A group-specific marking is produced, at least for IP packets which can be allocated to a specific group, in a field of a header of at least one packet, especially one of said IP packets.

Abstract: A method for transferring a queue position for a peer communication terminal is provided. This method involves a first peer communication terminal receiving a request message from a second peer communication terminal, the request message being used to request connection setup between the first and second peer communication terminals for retrieval of a file. The second peer communication terminal is then put into a file-retrieval queue on the first peer communication terminal. The first peer communication terminal sends an information message to the second peer communication terminal as soon as the second peer communication terminal has reached a predetermined position in the queue. The transmission of the information message is terminated by a proxy node before the information message reaches the second peer communication terminal. The proxy node transfers the predetermined position in the queue to a third peer communication terminal.

Abstract: The invention relates to a method for ascertaining an address for a peer communication terminal which holds a file. If peer communication terminals (P1, P2) repeatedly send request messages (N1, N2) to a first index server (IS1), with the request messages relating to a file (D) and with the first index server (IS1) not storing an address for a peer communication terminal which holds this file (D), then an interrogation device (AE) automatically ascertains an address (IP3) for a peer communication terminal (P3) which holds this file (D). This address (IP3) is transmitted to the first index server (IS1) by the interrogation device (AE). The first index server (IS1) then stores this address (IP3), so that when a further request message relating to this file appears the first index server (IS1) is able to provide this address (IP3) in response to the further request message.

Abstract: A method for making contact between a peer communication terminal and an index server for providing peer-to-peer data transmission is provided. The method involves a peer communication terminal associated with a first telecommunication network sending a make-contact message addressed to a first index server. This make-contact message is transmitted to a proxy node in the first telecommunication network. The proxy node terminates the transmission of the make-contact message, and the proxy node then prompts contact to be made between the peer communication terminal and a second index server, which is arranged in the first telecommunication network.

Abstract: A method is described for processing a request message sent from a mobile radio terminal to a message filter processor, in which a request message, in which one or more electronic peer-to-peer files is/are requested, is detected by the message filter processor (102,103,104. The request message is used to create a peer-to-peer request message according to a predefined peer-to-peer communication protocol. The peer-to-peer request message is sent to at least one processor (201 . . . 207) in a fixed network communication network (200), the request message being present in the form of a data packet (300), having a packet header (301) and user data (302), and detection of the request message including reading data in the packet header (301) of the request message, the data being used to identify a specific peer-to-peer application.

Abstract: A communication system and a method for processing a mobile radio message exchanged between a mobile radio terminal in a mobile radio communication network and a message conversion processor are proposed with a switching network having at least one processor and linked to a fixed network communication network and a mobile radio communication network, having a device, which is configured to use a mobile radio message to create a peer-to-peer message according to a peer-to-peer-communication protocol, so that said message can be transmitted to a processor in the fixed network communication network and/or to use a peer-to-peer message requested by a mobile radio terminal to create a mobile radio message according to a mobile radio communication protocol, so that the mobile radio message can be transmitted to the mobile radio terminal.

Abstract: Peer-to-peer messages supplied to a peer-to-peer message filter from a mobile radio communication network are identified and delivered to a superpeer computer which is connected to a mobile radio network-fixed network interface computer. The peer-to-peer message filter is disposed in the mobile radio communication network. At least one digital rights management service is installed in the superpeer computer.