Rohde and Schwarz Gmbh & Co. Kg

Uwe Baeder

Thomas Maucksch

Holger Jauch

Ingo Gruber

Thomas A Braun

Steffen Bittner

Pirmin Seebacher

A test system for determining a total radiated power of an antenna over the air comprises a measuring device and the base station. The measuring device is embodied to establish a communications connection to the base station to be tested over the air and to initiate and use over the air a function for fixing a present beam-lock function of the base station to be tested. The measuring device is further embodied to identify and measure a maximum effective isotropic radiated power, and to determine the total radiated power from previously known antenna characteristics and the measured maximum effective isotropic radiated power.

Measuring device and a measurement method for determining a total radiated power

Disclosed are a system and a method for digital radio interference mitigation. The system includes a first interface configured to receive a first digital signal associated with a satellite ground station; a second interface configured to receive a second digital signal associated with and acquired at a radio network transceiver; and a signal processing unit connected to the first and second interfaces and configured to mitigate a radio interference associated with the second digital signal in the first digital signal. This may improve a reception of satellite ground stations, especially upon coexistence with 5G cellular services in the C-band frequency spectrum.

Interference cancellation for satellite communication

A testing method for testing mobile communication devices comprises transmitting, by a testing front end module, a testing profile associated with a Universal Integrated Circuit Card, UICC, to a mobile communication device, activating the testing profile on the mobile communication device, setting, by a testing controller, the configuration of the mobile communication device to a testing mode according to the information of the activated testing profile of the UICC, and performing operational tests on the mobile communication device using a testing front end module of a testing system while the configuration of the mobile communication device is set to the testing mode.

Testing methods and systems for mobile communication devices

An approach for testing LTE-Advanced CA receiver characteristics for 3DL CA and beyond, wherein the approach facilitates the limiting of test resources, such as test time, while at the same time optimizing test coverage is provided. A one non-measured downlink carrier, from a set of downlink (DL) carriers, is established as a primary component carrier. A first DL carrier and a second DL carrier, from the set of DL carriers, are established as secondary component carriers. Test measurements for the first DL carrier and the second DL carrier are simultaneously performed. The set of DL carriers forms one of a 3DL, 4DL and 5DL CA operating band set comprising at least three downlink carriers.

Technique for testing LTE-advanced carrier aggregation receiver characteristics

Amongst others, a spectrum monitoring apparatus is disclosed. In some embodiments, a spectrum monitoring apparatus includes a radio-frequency (RF) receiver, an RF decoder, a query interface coupled to a spectrum access right database, a processor, and an access right determination module. The RF receiver is configured to receive radio frequency signals of an operator of a radio communication system utilizing frequencies of a monitored spectrum. The RF decoder is configured to decode radio frequency signals received by the RF receiver and to determine an identity of the operator. The processor is configured to send an operator query to the spectrum access right database via the query interface, the operator query containing the determined identity of the operator. The access right determination module is configured to receive a response from the spectrum access right database to the operator query via the query interface and to determine, on the basis of the determined identity of the operator and the response, whether the operator of the RF communication system is licensed to utilize the monitored frequencies.

Spectrum monitoring apparatus, spectrum access verification system and method for verification of spectrum access rights

The measuring system comprises a measuring device and a device under test (). This measuring device comprises a high-frequency processing unit (), which is embodied to receive high-frequency signals from the device under test () and/or to transmit high-frequency signals to the device under test () via a first connection (). The measuring system further comprises a test-software server unit (), which is embodied to supply test-software to the device under test ().

Test-software-supported measuring system and measuring method

The invention relates to a method and to a test device () which is used to determine an error rate during the transfer of data () in a mobile radio system. Said mobile radio system comprises at least one transfer channel, wherein several data partial flows () are transferred. The several data partial flows () are produced in a signal generator unit (). A transport format is determined, in an individual manner, for each data partial flow (). The data partial flows () are sent, respectively, to a number of transfer blocks which belong together (). A device which is to be tested captures the transfer blocks () of the data partial flows () and evaluates them. According to the accuracy of the evaluation, a positive or negative actuation signal (ACK, NACK) is sent back by the device which is to be tested. An error rate of each data partial flow () is determined by the test device () from the actuation signals (ACK, NACK) which are captured by the test device ().

Method of determining an error rate and a suitable testing device

A method for testing an assignment through a base station of transmission frequency(ies) from a total number of frequencies is provided. The method includes transmission of data-signal portion(s) on assigned frequency(ies) with a signal power and a phase position, and transmission of test-signal portion(s) on non-assigned frequency(ies), where respective test-signal portion for respectively one frequency or one frequency block with several frequencies is transmitted with an individually-adjusted transmission power and phase position for each frequency or each frequency block, which differ from one another. The method includes reception of test-signal portion(s) with non-assigned frequency(ies), evaluation of signal powers and/or phase positions for test-signal portions in an individual manner for non-assigned frequencies and/or frequency blocks and evaluation of signal power and/or phase position of the assigned frequency, determination of a frequency or a frequency block to be assigned and return of an assignment signal, and comparison with an anticipated value.

Method for testing the allocation of a transmission frequency, tester and base station

A method for testing the (Bit) Error Ratio BER of a device against a maximal allowable (Bit) Error Ratio BERwith an early pass and/or early fail criterion, whereby the early pass and/or early fail criterion is allowed to be wrong only by a small probability F for the entire test. Ns bits of the output of the device are measured, thereby ne erroneous bits of these ns bits are detected. PDand/or PDare obtained, whereby PDis the worst possible likelihood distribution and PDis the best possible likelihood distribution containing the measured ne erroneous bits with a single step wrong decision probability D, which is smaller than the probability F for the entire test. The average numbers of erroneous bits NEand NEfor PDand PDare obtained. NEand NEare compared with NE=BERns. If NEis higher than NEor NEis lower than NEthe test is stopped. Sequential sampling with two one-tailed parametric hypothesis test for the poisson distribution.

Method for testing the error ratio of a device using a preliminary probability

The invention concerns a method to evaluate whether a statistical time delay (TD) between a first event and a second event of a device under test is better than a test limit (TL). The method includes the steps: performing a minimum number N of tests and evaluating the time delay (TD) from each test; modeling a first probability distribution (P) of the evaluated time delays (TD); obtaining a second probability distribution (P) of the evaluated time delays (TD); performing a statistical transformation in order to obtain a third probability distribution (P) of the evaluated time delays (TD); and deciding to pass the device under test, if a certain percentage of the area of the third probability distribution (P) is on a good side (GS) of the test limit (TL).

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Ottobrunn, Germany

Uwe Baeder