Patent application number | Description | Published |
20090307331 | SYSTEM, METHOD AND ARTICLE OF MANUFACTURE FOR UTILIZING AN INTERFACE CLIENT IN AN INTERFACE ROAMING NETWORK FRAMEWORK - A system, method and article of manufacture are provided for utilizing an interface client in an interface roaming network. In general, an interface client in the interface roaming network submits information about the interface client to a wireless link in vicinity to the interface client. The interface client may then subsequently receive content and then display the content on a display. | 12-10-2009 |
20100123471 | Digital Communications Test System for Multiple Input, Multiple Output (MIMO) Systems - A digital communications test system and method for testing a plurality of devices under test (DUTs) in which multiple sets of a single vector signal analyzer (VSA) and single vector signal generator (VSG) can be used together to perform error vector magnitude (EVM) measurements for one or more DUTs in parallel, including one or more of composite, switched and multiple input multiple output (MIMO) EVM measurements. This allows N pairs of a VSA and VSG to test N DUTs with N×N MIMO in substantially the sane time as a single VSA and VSG pair can test a single DUT, thereby allowing a substantial increase in testing throughput as compared to that possible with only a single VSA and VSG set. | 05-20-2010 |
20100148827 | Radio Frequency (RF) Signal Generator and Method for Providing Test Signals for Testing Multiple RF Signal Receivers - A test signal interface and method for allowing sharing of multiple test signal generators among multiple devices under test (DUTs). Digital baseband test signals generated by the multiple test signal generators are combined and converted to a baseband analog signal for conversion to a radio frequency (RF) signal for testing the multiple DUTs. | 06-17-2010 |
20100261431 | METHOD AND APPARATUS FOR TESTING MULTIPLE DATA SIGNAL TRANSCEIVERS SUBSTANTIALLY SIMULTANEOUSLY WITH COMMON TRANSCEIVER TESTER - A method and apparatus for testing multiple data signal transceivers substantially simultaneously with a common transceiver tester by analyzing previously captured data signal transmissions from some of the data signal transceivers while continuing to capture further data signal transmissions from additional ones of the data signal transceivers. | 10-14-2010 |
20110069624 | METHOD AND SYSTEM FOR TESTING MULTIPLE DATA PACKET TRANSCEIVERS TOGETHER DURING A PREDETERMINED TIME INTERVAL - A method and system for testing multiple data packet transceivers together during a predetermined time interval. A sequence of downlink data packets are generated and distributed as corresponding sequences of downlink data packets for reception by multiple data packet transceivers each one of which is responsive during at least a respective portion of a predetermined time interval to a respective one of the corresponding sequences of downlink data packets by transmitting a respective one of multiple corresponding sequences of uplink data packets. At least a portion of each of the corresponding sequences of uplink data packets are combined to provide a sequence of test data packets of which at least one signal parameter is measured. | 03-24-2011 |
20110090799 | SYSTEM AND METHOD FOR TESTING MULTIPLE DIGITAL SIGNAL TRANSCEIVERS IN PARALLEL - A method for contemporaneously testing multiple digital data packet transceivers using predefined UL test sequences of synchronized data packets by pre-configuring test measurements, and multiplexing and interleaving portions of the data packets from the devices under test (DUTs). | 04-21-2011 |
20110292809 | System and Method for Using Multiple Network Addresses To Establish Synchronization of a Device Under Test and Test Equipment Controlling the Test - A system and method for testing a data packet signal transceiver in which multiple network addresses (e.g., media access control, or MAC, addresses) are used to establish synchronization of the device under test and the test equipment controlling the test. In accordance with an exemplary embodiment, synchronization is established using a first MAC address, following which testing is conducted using a second MAC address. | 12-01-2011 |
20120113829 | Achieving Greater Test Efficiencies Using ACK Signal Suppression - A method and system for testing a wireless data packet transceiver as a device under test (DUT) adapted to operate in conformance with a wireless signal standard such that a transmitted signal, when received by an intended receiver, is to result in a responsive signal transmission acknowledging such signal reception. During testing, responsive signal transmissions, e.g., acknowledgement signals, are withheld by the test system until after a predetermined number of data packets have been captured from the DUT, until a predetermined time interval has passed, or until data packets at a predetermined number of data rates have been captured from the DUT. | 05-10-2012 |
20120121000 | DIGITAL COMMUNICATIONS TEST SYSTEM FOR MULTIPLE INPUT, MULTIPLE OUTPUT (MIMO) SYSTEMS - A digital communications test system and method for testing a plurality of devices under test (DUTs) in which multiple sets of a single vector signal analyzer (VSA) and single vector signal generator (VSG) can be used together to perform error vector magnitude (EVM) measurements for one or more DUTs in parallel, including one or more of composite, switched and multiple input multiple output (MIMO) EVM measurements. This allows N pairs of a VSA and VSG to test N DUTs with N×N MIMO in substantially the sane time as a single VSA and VSG pair can test a single DUT, thereby allowing a substantial increase in testing throughput as compared to that possible with only a single VSA and VSG set. | 05-17-2012 |
20120121001 | DIGITAL COMMUNICATIONS TEST SYSTEM FOR MULTIPLE INPUT, MULTIPLE OUTPUT (MIMO) SYSTEMS - A digital communications test system and method for testing a plurality of devices under test (DUTs) in which multiple sets of a single vector signal analyzer (VSA) and single vector signal generator (VSG) can be used together to perform error vector magnitude (EVM) measurements for one or more DUTs in parallel, including one or more of composite, switched and multiple input multiple output (MIMO) EVM measurements. This allows N pairs of a VSA and VSG to test N DUTs with N×N MIMO in substantially the sane time as a single VSA and VSG pair can test a single DUT, thereby allowing a substantial increase in testing throughput as compared to that possible with only a single VSA and VSG set. | 05-17-2012 |
20120213112 | METHOD FOR MEASURING SENSITIVITY OF DATA PACKET SIGNAL RECEIVER - Methods for measuring the sensitivity of a data packet signal receiver are provided by varying the power level or modulation or both of a received data packet signal in a predetermined controlled sequence of data packet signals. | 08-23-2012 |
20130188678 | SYSTEM AND METHOD OF MAINTAINING CORRECTION OF DC OFFSETS IN FREQUENCY DOWN-CONVERTED DATA SIGNALS - Circuitry and method for reduce test time for wireless signal systems by using dynamic adaptive correction of DC offsets generated by the test instrument. The data signal is sampled for downstream processing including during pre-, inter-, or post-packet time intervals where no packet-data signal is occurring and where the device's power amplifier is turned off. The sampled data signal is measured for a DC offset occurring during these inter-packet time gaps. Compensating DC offset values are stored in a table indexed by frequency, gain and temperature range. When a subsequent test is carried out at that frequency, gain, and temperature range, the stored compensation value is used to correct the signal. DC offsets continue to be measured, stored and applied to captured signals, continuously refining the compensation values and decreasing the need for time-intensive calibrations. When a measured DC offset exceeds pre-determined limits, the instrument undergo a calibration step. | 07-25-2013 |
20130234728 | METHOD FOR IDENTIFYING SELF-GENERATED SPURIOUS SIGNALS - A local oscillator (LO) of a test system is set to an initial frequency whereupon a device under test (DUT) transmits a radio frequency (RF) signal to the test system. Characteristics of the RF signal are measured with the test system and used to identify magnitudes and frequencies of spurious signal products. The LO of the test system is reset to one or more subsequent frequencies that are offset from the initial frequency. One or more subsequent RF signals are transmitted from the DUT to the test system, with the DUT maintaining its original signal settings. Characteristics of the subsequent RF signals are measured with the test system and used to identify magnitudes and frequencies of spurious signal products for each of the subsequent LO frequencies. The spurious signal products that have shifted in frequency for each of the subsequent LO frequencies as self-generated signal products can then be identified. | 09-12-2013 |
20130259097 | METHOD FOR ENABLING A DEVICE UNDER TEST (DUT) TO RETRY A PORTION OF A PRE-DEFINED TEST SEQUENCE - Execution of a block test “retry” in a test environment with each block in the test sequence sent after the tester has determined that the previous block of data packets has met one or more prescribed test criterion. If a block sent by the DUT has not met the test criterion, a retry sequence is initiated to re-test the block. In another embodiment, a block test “retry” is executed where each block in the test sequence is sent and analysis of previously sent blocks is done in parallel with the sending of a subsequent block. If a previous block has not met the test criterion, a retry sequence is initiated whereby the tester and DUT step back to the block that failed to meet the test criterion and retry that block. If the retry meets test criterion, testing continues by resuming with the next untested block in the sequence. | 10-03-2013 |
20130294252 | SYSTEM AND METHOD FOR INITIATING TESTING OF MULTIPLE COMMUNICATION DEVICES - A system and method for initiating testing of a plurality of communication devices. The tester and devices under test (DUTs) are first synchronized as a way of confirming test readiness on the part of the DUTs, Following that, a test sequence is initiated by the tester. The synchronization and test initiation can be accomplished using signals with differing signal magnitudes or device identifiers. The test sequence can be a DUT transmit signal test in which each DUT transmits data packets in accordance with one or more predefined test sequences. Alternatively, the test sequence can be a DUT receive signal test in which the tester transmits data packets to the DUTs with differing signal frequencies or signal magnitudes. | 11-07-2013 |
20130294255 | METHOD FOR EFFICIENT PARALLEL TESTING OF TIME DIVISION DUPLEX (TDD) COMMUNICATIONS SYSTEMS - The invention described herein utilizes devices under test (DUTs) outfitted with stored, predefined test sequences, testers equipped with vector-signal generation (VSG) and vector-signal analysis (VSA) functionality, and novel methods for combining loopback and single-ended test functions in order to obtain higher testing efficiency for DUTs using Bluetooth or other time-division duplex (TDD) based communications. | 11-07-2013 |
20130295858 | SYSTEM AND METHOD FOR SYNCHRONIZED TRIGGERING OF TEST EQUIPMENT FOR TESTING MIMO TRANSCEIVERS - A system and method for testing multiple-input-multiple-output (MIMO) devices under test (DUTs) with multiple radio frequency (RF) signal testers. Each tester receives one or more RF signals from one or more of the DUTs, and the testers are mutually coupled in a ring such that successive ones receive a trigger input signal from an upstream tester and provide a trigger output signal to a downstream tester. Each tester is responsive to its input trigger signal and its one or more RF signals by providing its output trigger signal such that its output trigger signal has an asserted state initiated in response to an assertion of its input trigger signal and a transcending of a predetermined magnitude by at least one of the one or more RF signals. | 11-07-2013 |
20130301694 | SYSTEM AND METHOD FOR TESTING A RADIO FREQUENCY (RF) MULTIPLE-INPUT-MULTIPLE-OUTPUT (MIMO) DEVICE UNDER TEST (DUT) - A system and method for testing a radio frequency (RF) multiple-input-multiple-output (MIMO) device under test (DUT) in which system costs are minimized by using fewer precision RF MIMO testing subsystems together with lower precision integrated RF MIMO signal conversion circuitry to test the DUT. | 11-14-2013 |
20130326274 | METHOD FOR TRANSFERRING AND CONFIRMING TRANSFER OF PREDEFINED DATA TO A DEVICE UNDER TEST (DUT) DURING A TEST SEQUENCE - A method for testing a device under test (DUT) during a test sequence. In accordance with one embodiment, during a regular, pre-defined test sequence, data packets are transferred from a tester to a device under test (DUT) containing data related to at least one of an identification parameter of the DUT, an operational characteristic of the DUT and a request for data. Examples of such transferred data include address data for identifying the DUT (e.g., a unique media access control (MAC) address) and calibration data for controlling an operational characteristic of the DUT (e.g., signal power levels, signal frequencies or signal modulation characteristics). In accordance with another embodiment, the DUT retrieves and transmits data to the tester, either in response to the request for data or as a preprogrammed response to its synchronization with the tester. | 12-05-2013 |
20140024315 | SYSTEM AND METHOD FOR FACILITATING COMPARISON OF RADIO FREQUENCY (RF) DATA SIGNALS TRANSMITTED BY A DEVICE UNDER TEST (DUT) AND RECEIVED BY A TEST SYSTEM - A system and method for facilitating comparison of radio frequency (RF) data signals transmitted by a device under test (DUT) and received by a test system. A RF data signal received from a DUT is analyzed to provide analysis data indicative of conformance of the DUT operation with one or more applicable signal standards. The RF data signal is also converted to related conversion data that can be stored with state machine data corresponding to states of the signal testing subsystem. This state machine data can then be processed as needed with the analysis data and conversion data for off-line tasks such as debugging new test programs and procedures. | 01-23-2014 |
20140169181 | METHOD OF FACILITATING TESTING OF MULTIPLE TIME-DIVISION-DUPLEX (TDD) DATA PACKET SIGNAL TRANSCEIVERS - Method and system for facilitating testing of multiple time-division-duplex (TDD) data packet signal transceivers. Replicas of a data packet signal are transmitted by a tester to multiple TDD devices under test (DUTs), where the replicated signal is either a null or TDD data packet signal. In one embodiment, replica null data packet signals are transmitted for a predetermined time interval sufficient for the DUTs to synchronize with the tester. In another embodiment, following successful and unsuccessful receptions of responsive signals from respective DUTs indicating successful reception of their respective replica TDD data packet signals and, therefore, synchronization with the tester, corresponding replica TDD data packet signals are provided with data packet signal characteristics causing such replica data packet signals to fail to conform or to conform, respectively, with a predetermined data packet signal standard. Following synchronization, test and responsive data packet signals can be exchanged between the tester and DUTs. | 06-19-2014 |
20140169182 | SYSTEM AND METHOD FOR PARALLEL TESTING OF MULTIPLE DATA PACKET SIGNAL TRANSCEIVERS - System and method for facilitating testing of multiple data packet signal transceivers involving data-packet-signal replication and one or more status signals indicating successful and unsuccessful receptions of confirmation signals. Based upon the one or more status signals, one or more control signals cause the replicated data packet signals to be distributed to the devices under test (DUTs) such that, following successful and unsuccessful receptions of confirmation signals, corresponding replicated data packet signals are caused to fail to conform in part or to conform, respectively, with a predetermined data packet signal standard. | 06-19-2014 |
20140181601 | METHOD OF TESTING MULTIPLE DATA PACKET SIGNAL TRANSCEIVERS CONCURRENTLY - A method of testing, such as for a bit error rate (BER), of multiple data packet signal transceivers during which a tester and the data packet signal transceivers exchange sequences of test data packets and summary data packets. The tester provides the test data packets which contain respective pluralities of data bits with respective predetermined bit patterns. Responsive thereto, the data packet signal transceivers provide the summary data packets which contain respective summary data indicative of the number of data bits with the respective predetermined bit patterns that are correctly received by corresponding ones of the data packet signal transceivers. | 06-26-2014 |
20140233405 | SYSTEM AND METHOD FOR TESTING MULTIPLE DATA PACKET SIGNAL TRANSCEIVERS CONCURRENTLY - A system and method for testing multiple data packet signal transceivers concurrently in which scalar and vector signal testing are separated. Concurrent testing of scalar signal characteristics of multiple data packet signals from the data packet signal transceivers can be performed while also performing testing of vector signal characteristics of portions of each of the multiple data packet signals, thereby requiring less test time for performing all desired signal tests. | 08-21-2014 |
20140256268 | SYSTEM AND METHOD FOR CONFIRMING RADIO FREQUENCY (RF) SIGNAL CONNECTION INTEGRITY WITH MULTIPLE DEVICES UNDER TEST (DUTS) TO BE TESTED CONCURRENTLY - System and method for confirming radio frequency (RF) signal connections with multiple devices under test (DUTs) tested concurrently using replicas of a RF test signal. Cabled signal connections between the signal source and the DUTs are monitored by sensing levels of outgoing and related reflection RF signals. These signal levels are compared against similar signal levels when the outgoing RF signals are provided to reference impedances. Alternatively, the cabled signal connections have lengths of known signal wavelengths and the RF test signal frequency is swept such that minimum and maximum time delays between the outgoing and reflection RF signals go through minimum and maximum signal cycles with a difference of at least one full cycle. The reflection RF signal magnitude and phase are monitored, from which peak and valley signal level differences and phase changes are identified to determine return loss and phase changes indicative of DUT connection. | 09-11-2014 |
20140269365 | SYSTEM AND METHOD FOR TESTING A DATA PACKET SIGNAL TRANSCEIVER - A system and method for testing signal reception by a data packet signal transceiver. By monitoring signals provided to and returning from a device under test (DUT), e.g., stimulus and response signals, respectively, it can be determined whether and when the DUT has received a faulty data packet or received a valid data packet in a faulty manner. When such events occur, appropriate control signals are provided for instructing the test signal reception and analysis subsystem (e.g., a vector signal analyzer) to capture and retain for analysis such faulty data packet or valid data packet received in a faulty manner. This enables the data packet reception test results to identify the number of data packets correctly received within the prescribed time interval and identify which data packet reception faults are due to reception of a faulty data packet or reception of a valid data packet in a faulty manner. | 09-18-2014 |
20140269870 | SYSTEM AND METHOD FOR TESTING A RADIO FREQUENCY MULTIPLE-INPUT MULTIPLE-OUTPUT DATA PACKET TRANSCEIVER WHILE FORCING FEWER DATA STREAMS - In accordance with the presently claimed invention, a system and method are provided for testing multiple-input, multiple-output wireless radiofrequency (RF) packet data signal transceivers while operating in such ways as to communicate their signals using various combinations or permutations of packet data streams without requiring termination or re-establishment of communication links following transitions from one combination or permutation of packet data streams to another. | 09-18-2014 |
20150036729 | METHOD FOR TESTING SENSITIVITY OF A DATA PACKET SIGNAL TRANSCEIVER - A method for using a test data packet signal to test a data packet signal transceiver device under test (DUT) having an operating characteristic defined by a data packet error rate (PER) as a function of data packet signal power (PWR). The test data packet signal power is varied and a test PER is computed as a function of DUT response data packets and test data packets until a measured test PER or a computed test PER extrapolated from measured PERs is equal to a predetermined PER less than and greater than maximum and minimum PERs, respectively. | 02-05-2015 |
20150058691 | METHOD FOR TESTING DATA PACKET SIGNAL TRANSCEIVER USING COORDINATED TRANSMITTED DATA PACKET SIGNAL POWER - A method for testing a data packet signal transceiver device under test (DUT) that minimizes time lost due to waiting for respective power levels of data packets transmitted by the DUT to settle at the desired nominal value for transmit signal testing. In accordance with exemplary embodiments, signals transmitted by the DUT during receive signal testing, e.g., as acknowledgement data packets, are transmitted at the nominal value for transmit signal testing, thereby allowing sufficient time for individual data packet signal power levels to settle and remain consistent at the nominal value by the time receive signal testing is completed and transmit signal testing is to begin. | 02-26-2015 |
20150063133 | METHOD FOR TESTING DATA PACKET SIGNAL TRANSCEIVERS USING INTERLEAVED DEVICE SETUP AND TESTING - A method of using tester data packet signals and control instructions for testing multiple data packet signal transceiver devices under test (DUTs). During mutually alternating time intervals, selected ones of which are substantially contemporaneous, multiple tester data packet signals and DUT control instructions are used for concurrent testing of multiple DUTs. | 03-05-2015 |
20150067417 | METHOD FOR TESTING DATA PACKET SIGNAL TRANSCEIVERS WITH MULTIPLE RADIO ACCESS TECHNOLOGIES USING INTERLEAVED DEVICE SETUP AND TESTING - A method of using tester data packet signals and control instructions for testing a radio frequency (RF) data packet signal transceiver device under test (DUT) capable of communicating using multiple radio access technologies (RATs) having one or more mutually distinct signal characteristics. During mutually alternating time intervals, selected ones of which are substantially contemporaneous, tester data packet signals and control instructions are used for concurrent testing and configuration for testing, respectively, of multiple RATs of the DUT. | 03-05-2015 |
20150078196 | SYSTEM AND METHOD FOR TESTING WIDE BAND DATA PACKET SIGNAL TRANSCEIVERS USING NARROW BAND TESTERS - System and method for using multiple data packet signal testers having narrower data packet signal bandwidths for testing multiple data packet signal transmitters having wider data packet signal bandwidths. Using multiple data packet signal testers with narrower receiver bandwidths to process respective portions of the wider bandwidth of the data packet signals produced by the devices under test (DUTs) enables use of lower cost, narrower-bandwidth test equipment to test wide-bandwidth signals. | 03-19-2015 |