Abstract: This disclosure relates to signal testing, and is concerned with testing a joint communication and sensing (JCAS) signal. A system for testing a JCAS signal received from a device under test (DUT) and a corresponding method are provided. The JCAS signal comprises a communication signal and a sensing signal. The system is configured to perform a signaling test on the communication signal, the signaling test producing a communication response signal, and to perform a sensing test on the sensing signal, the sensing test producing a sensing response signal. Further, the system is configured to send a feedback signal to the DUT, the feedback signal including the communication response signal and the sensing response signal.

Abstract: A monitoring system and monitoring method for detecting a spectral anomaly in a cellular wireless network, in particular a 5G private uRLLC network, wherein an RF receiver monitors the cellular wireless network spectrum and derives spectrum and/or physical measurement values of the spectrum of the cellular wireless network, and a processing unit of the monitoring system executes a spectral anomaly neural network trained by a machine learning algorithm in a training system, wherein the processing unit obtains the spectrum and/or the physical measurement values of the spectrum and processes it to detect a spectral anomaly information.

Abstract: A system for calibrating radio frequency test chambers is provided. The system comprises an antenna array with a plurality of antenna elements arranged in a three dimensional configuration, a plurality of power measuring units downstream to the plurality of antenna elements and a processing unit. In this context, the plurality of power measuring units output a power from each antenna elements corresponds to a radiation pattern generated by an incident test signal. The processing unit is configured to analyze the power distribution of the test signal in order to calculate a calibration.

Abstract: An error rate test method is disclosed. The error rate test method comprises the following steps. At least one test signal with a predetermined frequency is received from at least one device under test. A symbol sequence comprised in the at least one test signal is determined. At least one error quantity being associated with the at least one device under test and the at least one test signal is determined based on the determined symbol sequence, wherein the at least one error quantity determined is indicative of a rate of erroneous symbols comprised in the symbol sequence. Respective error quantities are determined simultaneously for at least one of multiple devices under test and for multiple different predetermined frequencies. Further, a test system for testing a device under test is disclosed.

Abstract: An error rate test method is disclosed. The error rate test method comprises the following steps. At least one test signal with a predetermined frequency is received from at least one device under test. A symbol sequence comprised in the at least one test signal is determined. At least one error quantity being associated with the at least one device under test and the at least one test signal is determined based on the determined symbol sequence, wherein the at least one error quantity determined is indicative of a rate of erroneous symbols comprised in the symbol sequence. Respective error quantities are determined simultaneously for at least one of multiple devices under test and for multiple different predetermined frequencies. Further, a test system for testing a device under test is disclosed.

Abstract: A monitoring system and monitoring method for detecting a spectral anomaly in a cellular wireless network, in particular a 5G private uRLLC network, wherein an RF receiver monitors the cellular wireless network spectrum and derives spectrum and/or physical measurement values of the spectrum of the cellular wireless network, and a processing unit of the monitoring system executes a spectral anomaly neural network trained by a machine learning algorithm in a training system, wherein the processing unit obtains the spectrum and/or the physical measurement values of the spectrum and processes it to detect a spectral anomaly information.

Abstract: A system for calibrating radio frequency test chambers is provided. The system comprises an antenna array (with a plurality of antenna elements arranged in a three dimensional configuration, a plurality of power measuring units downstream to the plurality of antenna elements and a processing unit. In this context, the plurality of power measuring units output a power from each antenna elements corresponds to a radiation pattern generated by an incident test signal. The processing unit is configured to analyze the power distribution of the test signal in order to calculate a calibration.

Abstract: A measuring system for measuring a communications device comprising an antenna-array. The measuring system comprises a controller, a measuring device, a measuring antenna and a device mount. The measuring device performs measurements with regard to the communications device. The device mount rotates the communications device about at least one axis. The controller sets a maximum gain direction of the antenna-array. The controller (i) controls the device mount to rotate the communications device, compensating for the set maximum gain direction, until the set maximum gain direction meets a direction of the measuring antenna with respect to the communications device, and (ii) determines an actual maximum gain direction of the antenna-array by iteratively rotating the communications device and determining a respective gain for each iteration, and determines the actual maximum gain direction as a rotation of the device mount that corresponds to the iteration of maximal gain.

Abstract: A measuring system for measuring a communications device comprising an antenna-array. The measuring system comprises a controller, a measuring device, a measuring antenna and a device mount. The measuring device performs measurements with regard to the communications device. The device mount rotates the communications device about at least one axis. The controller sets a maximum gain direction of the antenna-array. The controller (i) controls the device mount to rotate the communications device, compensating for the set maximum gain direction, until the set maximum gain direction meets a direction of the measuring antenna with respect to the communications device, and (ii) determines an actual maximum gain direction of the antenna-array by iteratively rotating the communications device and determining a respective gain for each iteration, and determines the actual maximum gain direction as a rotation of the device mount that corresponds to the iteration of maximal gain.

Abstract: A measuring instrument for testing mobile-radio relay stations provides at least one first measuring device and a receiver device. The first measuring device generates a first signal and transmits it either directly or via at least one further device to a relay station under test. The receiver device receives from the relay station under test a second signal derived from the first signal. The first measuring device compares the first signal and at least one signal derived from the second signal.

Abstract: A method for reducing collisions during the initial access by a plurality of mobile-terminal devices to a base station which comprises a control unit, wherein the control unit administers at least one random-access resource, wherein the method contains the following method steps: setting (S1) by the control unit of a priority which specifies which mobile-terminal device is allowed to connect to the at least one random-access resource; broadcast (S2) of the priority by the base station on at least one known channel.

Abstract: A user terminal receives at least one signal with information depending on a location of the user terminal. The user terminal processes the at least one signal for providing data related to the location while it is in a cell of an accessible private base station and saves the data as a reference data. After that, the user terminal receives at least one signal with information depending on the location of the user terminal and a broadcast from a private base station. The user terminal processes the at least one signal for providing data related to a location of the user terminal and compares the data and a reference data with each other. The controller enables a contact to the private base station if the data and the reference data match each other and, otherwise, disables a contact to the private base station.

Abstract: A measuring device for determining the channel-quality feedback quality of mobile stations contains a base station, a mobile station and a measuring unit. The measuring unit contains at least two antennas and a processing device. The measuring unit and the mobile station receive signals in each case by means of at least two antennas from the same at least two antennas of the base station. The mobile station determines a channel-quality feedback value from the signals it has received. The processing device determines the orthogonality of the signals received by the measuring unit. The processing device determines a channel-quality feedback value from the orthogonality. From this and from the channel-quality feedback value of the mobile station, the processing device determines the quality of the latter.

Abstract: A controller of a private base station receives data on a travel time depending on a propagation delay between a private base station and a user terminal. The controller outputs a control signal to a controllable amplifier for decreasing a transmission power of the private base station if the measured travel time is longer than a predetermined reference time or quality of service is lower than reference quality.

Abstract: A radio communication network having at least two base stations. The base stations communicate with mobile stations using time slots. The time slots are divided into transmission slots, during which the base stations transmit messages, and receiving slots, during which the base stations receive messages. The base stations jointly determine an assignment of the time slots as transmission slots and receiving slots.

Abstract: There is provided a private base station including a processing unit configured to scan data of overlaying macro cells of a public radio network in order to report the location of the private base station; a communication unit configured to request a connectivity service from the public radio network by using identification data of the private base station and the location of the private base station; and a communication unit configured to receive grant to utilize the re-quested connectivity service once the identification data has been verified by the public radio network.

Abstract: A method for reducing collisions during the initial access by a plurality of mobile-terminal devices to a base station which comprises a control unit, wherein the control unit administers at least one random-access resource, wherein the method contains the following method steps: setting (S1) by the control unit of a priority which specifies which mobile-terminal device is allowed to connect to the at least one random-access resource; broadcast (S2) of the priority by the base station on at least one known channel.

Abstract: A measuring instrument for testing mobile-radio relay stations provides at least one first measuring device and a receiver device. The first measuring device generates a first signal and transmits it either directly or via at least one further device to a relay station under test. The receiver device receives from the relay station under test a second signal derived from the first signal. The first measuring device compares the first signal and at least one signal derived from the second signal.

Abstract: A measuring device for determining the channel-quality feedback quality of mobile stations contains a base station, a mobile station and a measuring unit. The measuring unit contains at least two antennas and a processing device. The measuring unit and the mobile station receive signals in each case by means of at least two antennas from the same at least two antennas of the base station. The mobile station determines a channel-quality feedback value from the signals it has received. The processing device determines the orthogonality of the signals received by the measuring unit. The processing device determines a channel-quality feedback value from the orthogonality. From this and from the channel-quality feedback value of the mobile station, the processing device determines the quality of the latter.

Abstract: A radio communication network having at least two base stations. The base stations communicate with mobile stations using time slots. The time slots are divided into transmission slots, during which the base stations transmit messages, and receiving slots, during which the base stations receive messages. The base stations jointly determine an assignment of the time slots as transmission slots and receiving slots.