Abstract: A method for processing previously detected identifications of apparatuses of an aircraft, wherein each apparatus has at least one communicative component. A reference dataset is used to compare the actual identifications with specified identifications, as a result of which a report signal based on the comparison result indicates whether the detected identifications correspond to the identifications represented by the reference dataset. If there is a positive match, this allows the conclusion that the apparatuses are correctly installed in the aircraft.

Abstract: A network node of a wireless communications network is provided in a means of transportation, for an aircraft, for ascertaining sources of interference, to a system with such a network node, to an associated method for ascertaining sources of interference of a wireless communications network provided in a means of transportation, for the aircraft, and to a computer program for executing the method. The network node includes an interference-power-ascertaining component, for ascertaining an interference power of an interfering radiation emitted from a source of interference, and a transmitting component for wireless or wirebound transmission of the ascertained interference power to a control device for determining at least one of a direction of the interfering radiation and a distance of the source of interference, including the position of the source of interference, on the basis of the ascertained interference power.

Abstract: The invention relates to a sensor network in an aircraft, which comprises several sensor nodes that communicate with a central data collection and evaluation unit via a radio transmission path. Data transmission can take place in various ways. For example, different frequency ranges are provided, from which the respective frequency range enabling the best data transmission quality is selected.

Abstract: A network node of a wireless communications network is provided in a means of transportation, for an aircraft, for ascertaining sources of interference, to a system with such a network node, to an associated method for ascertaining sources of interference of a wireless communications network provided in a means of transportation, for the aircraft, and to a computer program for executing the method. The network node includes an interference-power-ascertaining component, for ascertaining an interference power of an interfering radiation emitted from a source of interference, and a transmitting component for wireless or wirebound transmission of the ascertained interference power to a control device for determining at least one of a direction of the interfering radiation and a distance of the source of interference, including the position of the source of interference, on the basis of the ascertained interference power.

Abstract: The invention relates to a method for digital and directional data transmission between aircraft and ground stations. In this arrangement data is exchanged digitally and directly, in other words directly by means of directional antennae, between the aircraft and the ground stations. Furthermore, transmission lobes are adapted during flight, and the directional antennae on the aircraft only illuminate regions on the ground that are located at a minimum distance across the flight path of the aircraft.

Abstract: The invention relates to a sensor network for determining the position of devices and gear in an aircraft. The sensor network exhibits several sensor nodes, which have an autonomous power supply. The sensor nodes can communicate wirelessly with each other and with a central processing unit. The position of each individual sensor node can be determined by evaluating high-frequency signal parameters.

Abstract: A testing device comprises a transmission path comprising at least one leakage conduction antenna disposed in the cabin of the aircraft, a control device coupled to the transmission path, said control device comprising a generating device for generating a broad-band interference signal and a transfer device for feeding an HF signal to the leakage conduction antenna, wherein the fed HF signal has a pre-defined power level and contains at least the generated broad-band interference signal, at least one measuring device coupled to the transmission path at a pre-defined coupling point, said measuring device measuring the power level of the HF signal at the coupling point and preparing a measurement signal that is proportional to the measured power level, and an evaluation means for preparing a test result by way of a comparison between the prepared measurement signal and a target signal that depends on the power level of the fed HF signal.

Abstract: The present invention provides a test device and a method for carrying out a function test on a communication system. The test device contains a transmission path having at least one leaky line antenna arranged in the aircraft cabin, a control device coupled to the transmission path for feeding an HF signal at a predetermined power level into the leaky line antenna, and at least one measuring mechanism coupled at a predetermined coupling point to the transmission path to measure the power level of the HF signal at the coupling point and to transmit a result signal which depends on the measured power level via the leaky line antenna to the control device.

Abstract: The invention relates to a method for digital and directional data transmission between aircraft and ground stations. In this arrangement data is exchanged digitally and directly, in other words directly by means of directional antennae, between the aircraft and the ground stations. Furthermore, transmission lobes are adapted during flight, and the directional antennae on the aircraft only illuminate regions on the ground that are located at a minimum distance across the flight path of the aircraft.

Abstract: The invention relates to a sensor network for determining the position of devices and gear in an aircraft. The sensor network exhibits several sensor nodes, which have an autonomous power supply. The sensor nodes can communicate wirelessly with each other and with a central processing unit. The position of each individual sensor node can be determined by evaluating high-frequency signal parameters.

Abstract: The invention relates to a sensor network in an aircraft, which comprises several sensor nodes that communicate with a central data collection and evaluation unit via a radio transmission path. Data transmission can take place in various ways. For example, different frequency ranges are provided, from which the respective frequency range enabling the best data transmission quality is selected.

Abstract: A testing device comprises a transmission path comprising at least one leakage conduction antenna disposed in the cabin of the aircraft, a control device coupled to the transmission path, said control device comprising a generating device for generating a broad-band interference signal and a transfer device for feeding an HF signal to the leakage conduction antenna, wherein the fed HF signal has a pre-defined power level and contains at least the generated broad-band interference signal, at least one measuring device coupled to the transmission path at a pre-defined coupling point, said measuring device measuring the power level of the HF signal at the coupling point and preparing a measurement signal that is proportional to the measured power level, and an evaluation means for preparing a test result by way of a comparison between the prepared measurement signal and a target signal that depends on the power level of the fed HF signal.

Abstract: The present invention provides a test device and a method for carrying out a function test on a communication system. The test device contains a transmission path having at least one leaky line antenna arranged in the aircraft cabin, a control device coupled to the transmission path for feeding an HF signal at a predetermined power level into the leaky line antenna, and at least one measuring mechanism coupled at a predetermined coupling point to the transmission path to measure the power level of the HF signal at the coupling point and to transmit a result signal which depends on the measured power level via the leaky line antenna to the control device.

Abstract: A postamble structure is immediately attached to a data block that does not contain sufficient information with regard to channel identification. This postamble structure has, for each antenna, a channel estimation section with a channel estimation sequence. A transmission mode in a respective station is selected based on of the received channel sequence.

Abstract: A method for changing only one radio channel of an existing duplex radio link is wherein the radio channel changed or to be changed is the disturbed radio channel. The new radio channel (Dn) exhibits, for example in comparison with the disturbed radio channel, only a different timeslot wherein, the radio frequency remains the same.

Abstract: In a cellular telecommunications system using wireless telecommunication between mobile parts and base stations, a method of handing off telecommunications connections from uncoordinated, unlicensed operation of the system to coordinated, licensed operation and vice versa. The method requires only simple circuitry and little energy consumption in the mobile parts. Initial monitoring is carried out in the base station, which supports uncoordinated, unlicensed system operation.

Abstract: The invention relates to the filtering of a subfrequency band out of a receive frequency band, in which a carrier frequency for prefiltering the receive frequency band and an intermediate frequency for demodulating the frequency band filtered out during the prefiltering and for generating a frequency baseband are inserted into the signal propagation path, in which the desired subfrequency band is filtered out of the frequency baseband by a post-filtering and in which the carrier frequency, the intermediate frequency and the post-filtering are matched to one another.

Abstract: The invention relates to a method for establishing a connection and short-range radio transceiver unit for carrying out said method, whereby an inialisation of a first transmission power value (E2) occurs and a search for a second short-range transceiver unit in a radio coverage area (E3, F4) as determined by the first transmission power value. On finding a second short-range radio transceiver unit, storage of the characteristic information of the second short-range radio transceiver unit along with the first transmission power value is carried out (E4, E5). A comparison of the first transmission power value with a second transmission power value is then carried out (E6), whereby if equality is found the search is ended and where inequality is found the search is repeated with a modified first transmission power value (E8, E3, E4).

Abstract: A method for the radio coverage of a mobile terminal of a mobile radio network in the catchment area of an intermediate station which is used as a converter, wherein: in the case of an existing connection between the mobile radio network and the mobile terminal, a connection is first set up on an internal frequency and the connection is then handled via the intermediate station; in the case of an existent connection from a mobile terminal via an intermediate station to the mobile radio network, the intermediate station will hand over the connection to the mobile terminal again directly to the mobile radio network when the mobile terminal is removed from the internal area of reception; and in the case of a new setting-up of a connection from the mobile terminal to the mobile radio network, for setting up the connection, the mobile terminal first, or after an unsuccessful connection set-up attempt with a mobile radio frequency, attempts to establish connection to an intermediate station on an internal frequency

Abstract: A method for disturbance-free operation of at least two base stations working according to the CDMA (Code Division Multiple Access) principle in a universal mobile telecommunications system, preferably in-house base stations, with partially overlapping radio fields relative to one another and/or with respect to a telecommunications radio cell network, wherein, the base stations transmit the communications information using the CDMA multiple access method, at least two participating stations carry out an autosynchronization procedure for the purpose of eliminating disturbing interferences on account of the overlapping radio fields and identical transmission frequency, chip synchronism being produced as a result and, consequently, good reception of the orthogonal codes, i.e. good subscriber separation of the multiple access method, is ensured.