Rohde & Schwarz Patente

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The present invention provides a test and measurement device (100, 200, 300) for testing an electronic device under test (150, 250, 350), the test and measurement device (100, 200, 300) comprising a test controller (101, 201, 301), which is configured to control the test and measurement device (100, 200, 300) to perform tests with the electronic device under test (150, 250, 350) based on respective user provided configuration parameters (102, 202, 302), and a memory device (103, 203, 303), which is coupled to the test controller (101, 201, 301), wherein the test controller (101, 201, 301) is configured to automatically store for every test in the memory device (103, 203, 303) a parameter set comprising the user provided configuration parameters (102, 202, 302). Further, the present invention provides an operating method for operating a test and measurement device (100, 200, 300).

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A test device for performing tests on a device under test has a network simulator being adapted to create a network test environment for the device under test. The network test environment has a network profile (25) comprising network configurations, in particular technology settings, protocol settings and/or encryption settings, and/or comprising at least one environmental factor, in particular base station density and/or presence of at least one geographic feature. The network profile (25) is based on a real-life network environment at a specific geographic location and/or of a specific operator so that the network test environment corresponds to the real-life network environment at the specific geographic location and/or of the specific operator.Further, a test system, a test infrastructure and a method for performing tests on a device under test are shown.

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A Scanning unit (10) is described which comprises a measuring coil (12) and an active impedance matching circuit (14) having a current-to-voltage converter (16) with an input. The input of the current-to-voltage converter (16) is connected to the measuring coil (12). The scanning unit (10) is configured such that a current of a line to be measured is measured in an inductive manner by the measuring coil (12). Further, a feedback network (22) is provided which has at least one resistance (28, 30). In addition, a directional coupler and a measuring system are described.

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A method for identifying suspicious traffic is described. A communication between a device under test (12) and a network simulator (14) is established. Exchanged data between the device under test (12) and the network simulator (14) is monitored. Prerecorded data is used in connection with an artificial intelligence module (16) to identify malicious data within the data exchanged. Further, an identification system (10) for identifying suspicious traffic is described.

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The invention relates to a method of real-world testing of a device under test with laboratory equipment. The method comprises the steps of: - Transmitting at least one data packet by means of a device under test at a certain reference time, wherein the reference time is derived from a global navigation satellite system signal, - Receiving the data packet by means of a test equipment, wherein the data packet received has been transmitted by the device under test at the reference time, - Processing the data packet received by means of the test equipment such that the test equipment synchronizes itself with the reference time, and - Transmitting at least one test data packet by means of the test equipment, wherein the test data packet is synchronized with the reference time.

A vector network analyzer (3, 4, 5, 6) comprises a first measuring port (31, 41, 51, 61), a first digital interface (311, 411, 511, 611), connected to the first measuring port, adapted to be connected to a digital input or output of a device under test (2), and a second measuring port (32, 42, 52, 62), adapted to be connected to a radio frequency input or output of the device under test. It also comprises a processor (36, 46, 56, 66), adapted to determine S-parameters of the device under test based upon measuring signals transmitted to the device under test and receive from the device under test by the first measuring port and the second measuring port.

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Ein Begrenzer (2) für Hochfrequenzsignale hat einen Eingang (5), wobei ein Hochfrequenzsignal dem Begrenzer (2) an seinem Eingang (5) zugeführt ist. Der Begrenzer (2) weist mehrere Begrenzungsstufen (8 1 , 8 2 , 8 3 , 8 4 , 8 5 , 8 6 ) auf, die mit dem Eingang (5) elektrisch verbunden sind. Jede Begrenzungsstufe (8 1 , 8 2 , 8 3 , 8 4 , 8 5 , 8 6 ) ist eine Reihenschaltung mit einer nicht vorgespannten Diode (10 1 , 10 2 , 10 3 , 10 4 , 10 5 , 10 6 ) und einer Zenerdiode (11 1 , 11 2 , 11 3 , 11 4 , 11 5 , 11 6 ), welche nicht zur Vorspannung der Diode dient, sodass das Hochfrequenzsignal über die eine nicht vorgespannte Diode (10 1 , 10 2 , 10 3 , 10 4 , 10 5 , 10 6 ) und die Zenerdiode (11 1 , 11 2 , 11 3 , 11 4 , 11 5 , 11 6 ) mit einer Bezugsmasse elektrisch verbunden ist.

A radio test system (10) for testing a device under test (12) is described, comprising a signal generation unit (14) configured to generate a downlink signal to be transmitted to the device under test (12) for over-the-air testing. The radio test system (10) has at least one antenna (18) configured to transmit the downlink signal via an over-the-air transmission channel (42) to the device under test (12). Further, a receiver (30) is provided that is configured to receive a response signal via the over-the-air transmission channel (42) from the device under test (12). In addition, the radio test system (10) has at least one over-the-air adapter (44) that is connected to the signal generation unit (14) wherein the over-the-air adapter (44) is configured to adapt the downlink signal to be transmitted such that the over-the-air transmission channel (42) is equalized. Further, a method for testing a device under test (12) is described.

An inventive direct radio transmission communications system (2) comprises a source transceiver (40), and a plurality of further transceivers (41 - 44). The source transceiver (40) is configured to individually indicate to each of the plurality of further transceivers (41 - 44) to participate in not-acknowledge, NACK, signaling with regard to the source transceiver (40), and/or not to. Each of the plurality of further transceivers (41 - 44) is configured to participate in NACK signaling with regard to the source transceiver (40), if the source transceiver (40) has indicated to participate in NACK signaling with regard to the source transceiver (40), and not to participate in NACK signaling with regard to the source transceiver (40), if the source transceiver (40) has indicated not to participate in NACK signaling with regard to the source transceiver (40).

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The present invention relates to establishing trust of a network device. For this purpose, trust information data referring to a first network device are generated and protected. The protected trust information data are forwarded to a second network device. The second network device stores the protected trust information of the first network device. Further, the second network device may forward the stored trust information data to a further network device upon request. In particular, a request for protected trust information data may refer to trust information data referring to a point in time or a period of time in the past. In this way, protected trust information data can be provided by a network device which is separated from the network device on which trust has to be established. By providing trust information data of previous point in time, the protection of the trust information data may make reference to previous trust information data. Thus, protection approaches such as blockchain can be applied.

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