Abstract: This transmission comprising a first transmission of a packet (52), comprising the steps consisting in: a first processing (54) of said packet (52) to obtain a first packet (56); and a coding (57, 59) of the first packet (56); wherein, when the first coded packet is received erroneous, the method comprises a second transmission of said packet, comprising: the steps implemented in the transmitter, consisting in: a second processing (84) of said packet (52) to obtain a second packet (86); and a coding (87, 89) of the second packet (86); and the steps implemented in the receiver, consisting in: a modification of the first and/or the second coded packets to obtain two packets in which the difference due to the first and second processings is compensated for: a combination (110) of both packets according to a HARQ procedure; and a decoding (112) of the combined packet.

Abstract: A recovery scheme where a base station monitors state of interoperation with a primary exchange. When the primary exchange becomes unavailable, active services may be lost, but the base station sends an activation request message to a secondary exchange that has access to base station configuration information of the base station. The secondary exchange uses the base station configuration information to activate the base station, and user terminals in the base station cell may begin to registrate to the system. Recovery capability of communications can be achieved with optimized use of network resources.

Abstract: To facilitate recording of data received from a non-trusted source entity, a trusted source entity, for example a user terminal or a user interface, sends to an operational center an authorization message authorizing the non-trusted source entity to send specific information messages. In response to the authorization message, the operational center creates an automatically verifiable authorization condition. When an information message arrives to the operational center, it checks, whether the message fulfills the condition, and if yes, records the data.

Abstract: A method for improved application of unreliable transfer mechanisms. An application uses application data delivered in data packets that become accessible from a peer entity via at least two packet data transmission mechanisms. The application is configured with a predefined operational range for a predefined application-specific characteristic. If the predefined application-specific characteristic exceeds the predefined operational range, the packet data transmission mechanism is changed. The mechanism facilitates maintaining an application-specific service level even if unreliable transmission mechanisms are applied.

Abstract: To provide a user equipment with a restricted access to network services in situation when authentication of the user equipment by means of a first shared secret, known only by the user equipment and an authentication centre is not possible because of a system failure, the user equipment is authenticated by means of a second shared secret in an access point node, the authentication procedure being otherwise the same.

Abstract: A recovery scheme where a base station monitors state of interoperation with a primary exchange. When the primary exchange becomes unavailable, active services may be lost, but the base station sends an activation request message to a secondary exchange that has access to base station configuration information of the base station. The secondary exchange uses the base station configuration information to activate the base station, and user terminals in the base station cell may begin to registrate to the system. Recovery capability of communications can be achieved with optimised use of network resources.

Abstract: To facilitate recording of data received from a non-trusted source entity, a trusted source entity, for example a user terminal or a user interface, sends to an operational center an authorization message authorizing the non-trusted source entity to send specific information messages. In response to the authorization message, the operational center creates an automatically verifiable authorization condition. When an information message arrives to the operational center, it checks, whether the message fulfills the condition, and if yes, records the data.

Abstract: When a communication session is implemented, the communications of a direct mode terminal may be mediated via a direct mode gateway such that messages of a direct mode first terminal are addressed with identification information of the direct mode gateway. In the invention identity information of a user of the direct mode terminal is delivered to a trunked mode terminal in a user plane signalling message of the communication session. In terminal procedures identity of the direct mode gateway may be replaced by identity information received in the user plane signalling message. Identity of the direct mode terminal is then in a simple manner made available to terminal procedures of the trunked mode terminal.

Abstract: A method for improved application of unreliable transfer mechanisms. An application uses application data delivered in data packets that become accessible from a peer entity via at least two packet data transmission mechanisms. The application is configured with a predefined operational range for a predefined application-specific characteristic. If the predefined application-specific characteristic exceeds the predefined operational range, the packet data transmission mechanism is changed. The mechanism facilitates maintaining an application-specific service level even if unreliable transmission mechanisms are applied.

Abstract: An information system that comprises a data source that transmits a data item to a group of database instances using a packet-switched communication protocol in which retransmission of the data item to a data base instance is independent from reception of an acknowledgement to the transmitted data item from the database instance. A database instance receives the data item from the data source, stores it as a present data item and opens access to the present data item. A data consumer queries information on the present data item from the database instance and is provided with means to detect whether the information included in a response to the query is valid or not. If the information is not valid, the data consumer initiates a new query from another destination.