Abstract: A communication device for communication in one or more mobile communication systems has a selection device for coupling one or more mobile radio antennas to one or more signal paths on the basis of a selection signal. The communication device also has a transceiver module, which is designed to generate the selection signal and to communicate in the one or more mobile communication systems by way of the coupled mobile radio antennas. The transceiver module is designed to select, on the basis of two or more user identifications, different mobile radio antennas for communication in the one or more mobile communication systems by way of the selection signal. The transceiver module is designed to take isolation and/or correlation between the mobile radio antennas into account in the selection.

Abstract: A communication device for communication in one or more mobile communication systems has a selection device for coupling one or more mobile radio antennas to one or more signal paths on the basis of a selection signal. The communication device also has a transceiver module, which is designed to generate the selection signal and to communicate in the one or more mobile communication systems by way of the coupled mobile radio antennas. The transceiver module is designed to select, on the basis of two or more user identifications, different mobile radio antennas for communication in the one or more mobile communication systems by way of the selection signal. The transceiver module is designed to take isolation and/or correlation between the mobile radio antennas into account in the selection.

Abstract: The invention relates to a radio communication device for a vehicle, said device having at least one antenna unit, the emission of which can be controlled in one or more directions, and having a control unit coupled to the at least one antenna unit, for controlling the latter. The control unit is coupled to a control application and configured to control the at least one antenna unit in an application-controlled geo-beamforming operating mode, such that the emission of the at least one antenna unit is restricted to the course of the road in the current location of the vehicle.

Abstract: A method and apparatus for data transmission between a transmitter-side data transmission unit and a receiver-side data transmission unit is provided. The method includes transmitting a first portion of a data packet from a real-time application to the receiver-side data transmission unit, receiving a communication channel availability indicator from the receiver-side data transmission unit, and, if the availability indicator shows that the communication channel is available, adjusting the configuration of the remaining data of the data packet to be transmitted within the maximum permissible data transmission time which is still available for the data packet and transmitting the remaining data to the receiver-side data transmission unit. A transmitter-side data transmission unit and a receiver-side data transmission unit configured to execute the data transmission method are also provided.

Abstract: A method for determining an end of a tailback in road traffic includes providing a signal quality map for a cell of a base station of a mobile radio system, where the signal quality map includes overview information about signal qualities occurring within the cell. The method also includes determining signal quality information for each of a plurality of mobile radio communication devices connected to the base station, and determining a probability density function based on determined signal quality information. A location is determined of the probability density function having a function gradient which corresponds to an angular amount of at least 75° with respect to a horizontal function axis of the probability density function, where the location is indicative of a tailback limit in the cell of the base station. A location of the tailback limit is then determined based on the determined location and the signal quality map.

Abstract: A communication device is provided, which is configured to receive context information and to configure a radio frame, in particular a control channel of a radio frame, based on the context information. In an embodiment the radio frame comprises a plurality of communication resources, wherein the communication device is configured to configure the radio frame by allocating at least two groups of communication resources of the plurality of communication resources of the radio frame to at least two groups of communication devices of a plurality of other communication devices based on the context information.

Abstract: Data sets are transmitted to mobile terminals, which are connected by a radio network to a data server connected to a data network, wherein the data server is configured to transmit the data sets via the radio network to terminals located in a radio cell of the radio network as a broadcast signal or optionally as an individual signal directed specifically to one or more terminals, wherein a total signal emitted into the radio cell contains a corresponding broadcast signal part and a corresponding individual signal part. In one embodiment, a user profile is associated with each of the terminals identified in the radio cell and the content of the data sets transmitted in the broadcast signal part in accordance with a determined broadcast signal part factor is compiled in accordance with the information stored in the user profiles.

Abstract: The invention relates to a method for operating a wireless communication interface arranged in a vehicle, in particular a motor vehicle, an apparatus for operating a wireless communication interface and a vehicle, in particular a motor vehicle, having an apparatus for operating a wireless communication interface and a control device. According to the invention, at least one uplink user data signal is taken as a basis for determining a channel quality indicator for the user data signal, so that channel quality determination is performable in the application layer independently of determination methods for the channel quality based on pilot, control or protocol signals.

Abstract: A method for supporting vehicular communications in a cellular network includes analyzing whether an incoming message is a vehicle data message or a base station control message. In the case that the incoming message is a base station control message of a specific base station: updating and/or storing the network operating parameters of the specific base station for controlling a transmission of selected vehicle data messages to the specific base station. In the case that the incoming message is a vehicle data message of a sending vehicle, determining at least one destination vehicle out of a provided and/or stored list of registered vehicles participating in the vehicular communication. The method also includes transmitting the vehicle data message to the at least one destination vehicle dependent on the at least one operating parameter of a respective receiving base station the at least one destination vehicle is connected to.

Abstract: A method for terminal-to-terminal communication in a cellular mobile radio network includes providing a radio signal interference map that is indicative of a location-dependent radio signal interference disturbance within a coverage area of a base station. The location-dependent radio signal interference disturbance is indicative of a radio signal interference disturbance of a terminal-to-terminal communication, and the radio signal interference map is based on a learning algorithm for a geographic radio signal interference map. Configuration information regarding a configuration setting of a radio transmission for a terminal-to-terminal communication between a first mobile radio communication terminal and a second mobile radio communication terminal is provided based on the location-dependent radio signal interference disturbance of the radio signal interference map. The configuration setting enables a statement regarding a configuration to be performed in respect of the radio transmission.

Abstract: The invention relates to a communication device (101a, 107) configured to receive context information and to configure a radio frame, in particular a control channel of a radio frame, based on the context information. In an embodiment the radio frame comprises a plurality of communication resources, wherein the communication device (107) is configured to configure the radio frame by allocating at least two groups of communication resources of the plurality of communication resources of the radio frame to at least two groups of communication devices of a plurality of other communication devices (101a-c, 103a-c) based on the context information.

Abstract: The invention relates to a method for operating a wireless communication interface arranged in a vehicle, in particular a motor vehicle, an apparatus for operating a wireless communication interface and a vehicle, in particular a motor vehicle, having an apparatus for operating a wireless communication interface and a control device. According to the invention, at least one uplink user data signal is taken as a basis for determining a channel quality indicator for the user data signal, so that channel quality determination is performable in the application layer independently of determination methods for the channel quality based on pilot, control or protocol signals.

Abstract: The invention relates to a communication device (101a, 107) configured to receive context information and to configure a radio frame, in particular a control channel of a radio frame, based on the context information. In an embodiment the radio frame comprises a plurality of communication resources, wherein the communication device (107) is configured to configure the radio frame by allocating at least two groups of communication resources of the plurality of communication resources of the radio frame to at least two groups of communication devices of a plurality of other communication devices (101a-c, 103a-c) based on the context information.

Abstract: A clusterhead device is capable of relaying group messages from a cellular network to an ad-hoc network, and vice versa. However, not every device that comprises a clusterhead device is activated as a clusterhead. Rather, only devices that do not receive enough beacon signals emitted by each motor vehicle are activated as a clusterhead. It is thus achieved that not too many motor vehicles function as a gateway.

Abstract: A non-coherent multi-user MIMO communication method is disclosed. Firstly, a data transmission method includes the acts of a) estimating the signal-to-noise ratio for each receiver; b) selecting a power sharing factor for each receiver; c) encoding information to be sent to each receiver into a symbol for each receiver; and d) transmitting, by a transmitter, a signal that includes the power sharing factors and the symbols for all of the receivers. Furthermore, a reception method includes the acts of: i) receiving the power sharing factor; ii) decoding the signal corresponding to the highest power sharing factor; iii) determining if the signal decoded in step ii) corresponds to the current receiver; iv) if the decoded signal corresponds to the current receiver, finalize the reception; and v) if the decoded signal does not correspond to the current receiver, proceed with the following power sharing factors.

Abstract: A method for terminal-to-terminal communication in a cellular mobile radio network includes providing a radio signal interference map that is indicative of a location-dependent radio signal interference disturbance within a coverage area of a base station. The location-dependent radio signal interference disturbance is indicative of a radio signal interference disturbance of a terminal-to-terminal communication, and the radio signal interference map is based on a learning algorithm for a geographic radio signal interference map. Configuration information regarding a configuration setting of a radio transmission for a terminal-to-terminal communication between a first mobile radio communication terminal and a second mobile radio communication terminal is provided based on the location-dependent radio signal interference disturbance of the radio signal interference map. The configuration setting enables a statement regarding a configuration to be performed in respect of the radio transmission.

Abstract: The invention relates to a communication device (101a, 107) configured to receive context information and to configure a radio frame, in particular a control channel of a radio frame, based on the context information. In an embodiment the radio frame comprises a plurality of communication resources, wherein the communication device (107) is configured to configure the radio frame by allocating at least two groups of communication resources of the plurality of communication resources of the radio frame to at least two groups of communication devices of a plurality of other communication devices (101a-c, 103a-c) based on the context information.

Abstract: A method for determining an end of a tailback in road traffic includes providing a signal quality map for a cell of a base station of a mobile radio system, where the signal quality map includes overview information about signal qualities occurring within the cell. The method also includes determining signal quality information for each of a plurality of mobile radio communication devices connected to the base station, and determining a probability density function based on determined signal quality information. A location is determined of the probability density function having a function gradient which corresponds to an angular amount of at least 75° with respect to a horizontal function axis of the probability density function, where the location is indicative of a tailback limit in the cell of the base station. A location of the tailback limit is then determined based on the determined location and the signal quality map.

Abstract: A method for broadcast service following for a vehicle includes a first step of continuously, or in given time intervals, estimating a signal quality and/or signal availability of the DAB service and/or the cellular network based broadcast service in a route section the vehicle is expected to reach in a given time span. The method also includes a second step of performing a handover from the DAB service to the corresponding cellular network based broadcast service dependent on the estimated signal quality and/or signal availability. The first step may depend on provided data base information. The first step may in addition, or in the alternative, depend on service information, which is included in a received DAB signal.

Abstract: A method and apparatus for data transmission between a transmitter-side data transmission unit and a receiver-side data transmission unit is provided. The method includes transmitting a first portion of a data packet from a real-time application to the receiver-side data transmission unit, receiving a communication channel availability indicator from the receiver-side data transmission unit, and, if the availability indicator shows that the communication channel is available, adjusting the configuration of the remaining data of the data packet to be transmitted within the maximum permissible data transmission time which is still available for the data packet and transmitting the remaining data to the receiver-side data transmission unit. A transmitter-side data transmission unit and a receiver-side data transmission unit configured to execute the data transmission method are also provided.