公开(公告)号：US20190190840A1

公开(公告)日：2019-06-20

申请号：US15842407

申请日：2017-12-14

Applicant: LitePoint Corporation

Inventor： Chen Cao ,  Christian Volf Olgaard ,  Ruizu Wang

IPC: H04L12/841 ,  H04L12/825 ,  H04L12/26

CPC classification number: H04L47/283 ,  H04L43/10 ,  H04L43/50 ,  H04L47/26

Abstract: A method for testing a data packet signal transceiver device under test (DUT). Following initial signal communications with a DUT, timing of further transmissions by the DUT may be effectively controlled by transmitting congestive communication channel signals to cause the DUT to detect apparent communication channel activity and in response thereto delay its own signal transmissions.

公开(公告)号：US10219248B2

公开(公告)日：2019-02-26

申请号：US15357013

申请日：2016-11-21

Applicant: LitePoint Corporation

Inventor： Ruizu Wang ,  Christian Volf Olgaard ,  Qinghui Luo

IPC: H04W72/02 ,  H04W4/80 ,  H04W24/10 ,  H04L29/12

Abstract: A method for communicating test results from a wireless device under test (DUT) using non-link testing resources. Test data resulting from testing one or more operations of the DUT are combined with other data to form one or more data packets for transmission to a tester. The test data occupies, e.g., via encoding, a portion of the one or more data packets designated for data identifying the DUT or a tester.

公开(公告)号：US20180359170A1

公开(公告)日：2018-12-13

申请号：US15619856

申请日：2017-06-12

Applicant: LitePoint Corporation

Inventor： Christian Volf Olgaard ,  Ruizu Wang ,  Qinghui Luo

IPC: H04L12/26 ,  G01R31/3183 ,  G01R31/319 ,  G01R31/317

CPC classification number: H04L43/50 ,  G01R31/31701 ,  G01R31/31725 ,  G01R31/318371 ,  G01R31/319 ,  G01R31/31926

Abstract: A method for coordinating testing of a wireless device under test (DUT) using non-link testing resources. Coordination between the tester and DUT is achieved by transmitting, from the tester to the DUT, predetermined numbers of data packets associated with predetermined tester identification data (e.g., MAC addresses identifying the tester transmitter). During test phases involving measurement and/or calibration of DUT transmit signals, the tester sends a number of data packets associated with one or more versions of tester identification data, in response to which the DUT performs internal operations (e.g., revising transmit power offsets). During later test phases involving validation of DUT performance, the tester sends another number of data packets associated with one or more versions of the tester identification data to inform the DUT that its testing has passed or failed, and/or is to be repeated.

公开(公告)号：US20180351664A1

公开(公告)日：2018-12-06

申请号：US15535135

申请日：2016-12-22

Applicant: LitePoint Corporation

Inventor： Christian Volf Olgaard ,  Ruizu Wang ,  Qing Jie Lu

IPC: H04B17/318

CPC classification number: H04B17/318 ,  H04B17/21

Abstract: A method for improving accuracy of power measurements of low power radio frequency (RF) signals received by a RF signal receiver in which power measurement accuracy taken at a low resolution is compensated with use of multiple RF signal attenuations at a finer resolution. In accordance with exemplary embodiments, incremental RF signal attenuations are applied to the received RF signal. An average of the power measurements, including those with the applied signal attenuations, has a net measurement error less than that of a direct power measurement.

公开(公告)号：US10097282B1

公开(公告)日：2018-10-09

申请号：US15881181

申请日：2018-01-26

Applicant: LitePoint Corporation

Inventor： Yen-Fang Chao ,  Christian Volf Olgaard

IPC: H04B17/10 ,  H04B17/29 ,  H04W24/06 ,  H04B17/364 ,  H04B17/00 ,  H04B17/391

Abstract: System and method for providing variable time delays with high temporal granularity and consistent broadband delay performance for testing of time-of-arrival (ToA) or angle-of-arrival (AoA) performances of radio frequency (RF) signal transceivers. Multiple delays may be imparted to a common RF signal to provide multiple delayed RF signals corresponding to RF signals originating from a source location and received at various locations having respective position coordinates relative to respective orthogonal axes, plus another delayed RF signal corresponding to a RF signal originating from the source location and received at a location at an intersection of the orthogonal axes.

公开(公告)号：US10079626B1

公开(公告)日：2018-09-18

申请号：US15585831

申请日：2017-05-03

Applicant: LitePoint Corporation

Inventor： Christian Volf Olgaard ,  Zhiyong Huang

IPC: H04B7/04 ,  H04B7/06 ,  H04B17/00 ,  H04B17/24 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0456

CPC classification number: H04B7/0421 ,  H04B7/0452 ,  H04B7/046 ,  H04B7/0634 ,  H04B17/0085 ,  H04B17/24

Abstract: A method for assessing receiver signal reception performance during wireless beam steering operation of a radio frequency (RF) data packet signal transceiver capable of multiple input, multiple output (MIMO) operation. In response to transmissions of a sounding packet (SP) from a beamforming device (“beamformer”), a receiving device (“beamformee”) transmits a response data packet containing matrix data representing a beamforming feedback matrix (BFM) related to signal attenuation by the wireless signal path environment through which the beamformer and beamformee are communicating. Using the matrix data, a statistical variation can be computed which is indicative of signal reception performance of the beamformee.

公开(公告)号：US09167459B2

公开(公告)日：2015-10-20

申请号：US13791098

申请日：2013-03-08

Applicant: LITEPOINT CORPORATION

Inventor： Christian Volf Olgaard

IPC: H04B17/00 ,  H04W24/08 ,  H04B17/17 ,  H01Q3/26 ,  H04B3/462

CPC classification number: H04W24/08 ,  H01Q3/267 ,  H04B3/462 ,  H04B17/0085 ,  H04B17/17

Abstract: 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.

Abstract translation: 使用RF测试信号的副本同时测试的多个待测器件（DUT）确定射频（RF）信号连接的系统和方法。 通过感测输出和相关反射RF信号的电平来监测信号源和DUT之间的电缆信号连接。 当将输出RF信号提供给参考阻抗时，将这些信号电平与类似的信号电平进行比较。 或者，电缆信号连接具有已知信号波长的长度，并且扫描RF测试信号频率，使得出射和反射RF信号之间的最小和最大时间延迟经过最小和最大信号周期，其中至少一个全周期 。 监测反射RF信号幅度和相位，从中识别峰谷信号电平差和相位变化，以确定指示DUT连接的回波损耗和相位变化。

公开(公告)号：US09015538B2

公开(公告)日：2015-04-21

申请号：US14017077

申请日：2013-09-03

Applicant: LitePoint Corporation

Inventor： Christian Volf Olgaard

IPC: G01R31/28 ,  H04L12/26

CPC classification number: H04L43/50 ,  H04W24/06 ,  H04W88/06

Abstract: 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.

Abstract translation: 一种使用测试器数据分组信号和控制指令来测试能够使用具有一个或多个相互不同的信号特性的多个无线电接入技术（RAT）进行通信的被测试射频（RF）数据分组信号收发器设备（DUT）的方法。 在相互交替的时间间隔期间，选定的时间间隔基本上同时进行，测试器数据分组信号和控制指令被用于分别测试DUT的多个RAT的并行测试和配置。

公开(公告)号：US09003253B2

公开(公告)日：2015-04-07

申请号：US13972280

申请日：2013-08-21

Applicant: Litepoint Corporation

Inventor： Christian Volf Olgaard ,  Ruizu Wang ,  Guang Shi

IPC: G01R31/3183 ,  G01R31/319 ,  G01R31/317 ,  H04W24/06

CPC classification number: G01R31/319 ,  G01R31/31725 ,  G01R31/318371 ,  H04L43/50 ,  H04W24/06

Abstract: 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.

Abstract translation: 一种用于测试被测试的数据分组信号收发器设备（DUT）的方法，其最小化由于等待由DUT发送的数据分组的相应功率电平以达到期望的标称值以用于发射信号测试的时间损失。 根据示例性实施例，在接收信号测试期间由DUT发送的信号（例如作为确认数据分组）以用于发射信号测试的标称值被发送，从而允许足够的时间来使各个数据分组信号功率电平稳定并保持一致 在标准值下，接收信号测试完成，发射信号测试即将开始。

公开(公告)号：US11032725B1

公开(公告)日：2021-06-08

申请号：US16822523

申请日：2020-03-18

Applicant: LitePoint Corporation

Inventor： Christian Volf Olgaard ,  Ruizu Wang ,  Chen Cao

IPC: H04W24/04 ,  H04W24/06 ,  H04B17/29 ,  G01R31/302 ,  G01R31/319

Abstract: System and method for testing a wireless data packet signal transceiver device under test (DUT) in which external control circuitry manages initiation of execution by a tester of test program instructions defining multiple self-terminating test control sequences in one or more desired sequences. The test control sequences may be pre-stored in a tester for subsequent execution under control of control signals sourced externally by the external control circuitry via separate control signals.