Abstract: A wireless network infrastructure for an aircraft includes a first communication unit to receive and transmit data signals from and to a control system in a secured domain of the aircraft, the first communication unit configured as a first network node of a wireless communication network, second communication units of corresponding aircraft devices in an unsecured domain of the aircraft and configured as second network nodes of the wireless communication network. The aircraft devices are operable by control signals sent from the control system to the aircraft devices and transmit control signals to the control system over the wireless communication network, each aircraft device having a communication unit further comprising additional control dissimilar from the control signals sent over the wireless communication network for operating the aircraft device independently. Also provided are an aircraft including the wireless network infrastructure and a method for wireless communication onboard an aircraft.

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 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 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: 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: 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).