公开(公告)号：US20200228434A1

公开(公告)日：2020-07-16

申请号：US16248453

申请日：2019-01-15

Applicant: LitePoint Corporation

Inventor： Christian Volf Olgaard ,  Ruizu Wang ,  Kaiyun Cui

IPC: H04L12/26 ,  H04B17/318

Abstract: System and method for testing transmission and reception performance of a data packet signal transceiver device under test (DUT). Data packet signals transmitted by a tester with a tester transmit output power (TTOP) contain trigger frames that include data corresponding to a reported tester transmit power (RTTP) of the data packet signals, and a desired received signal strength (TRSS) of DUT data packet signals to be received by the tester. Based on received signal strength of the tester data packet signals reported by the DUT (DRSS), responsive DUT data packet signals having a DUT transmit output power of RTTP-DRSS+TRSS. Successive repetitions of such tester and DUT data packet signals for multiple combinations of values of the TTOP, RTTP and DRSS enable testing transmission and reception performance of the DUT, including determining minimum and maximum DUT transmission power levels, with minimal signal interactions between tester and DUT.

公开(公告)号：US10326540B2

公开(公告)日：2019-06-18

申请号：US15619856

申请日：2017-06-12

Applicant: LitePoint Corporation

Inventor： Christian Volf Olgaard ,  Ruizu Wang ,  Qinghui Luo

IPC: H04B17/15 ,  H04L12/26 ,  G01R31/3183 ,  G01R31/319 ,  G01R31/317 ,  H04B17/10 ,  H04B17/29 ,  H04W24/06

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：US10298340B2

公开(公告)日：2019-05-21

申请号：US15535135

申请日：2016-12-22

Applicant: LitePoint Corporation ,  Christian Volf Olgaard ,  Ruizu Wang ,  Qing Jie Lu

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

IPC: 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：US10009126B2

公开(公告)日：2018-06-26

申请号：US14966761

申请日：2015-12-11

Applicant: LITEPOINT CORPORATION

Inventor： Christian Volf Olgaard ,  Ruizu Wang ,  Zhiyong Huang

IPC: H04B17/29 ,  H04L12/26 ,  H04B17/00

CPC classification number: H04B17/29 ,  H04B17/0085 ,  H04L43/50

Abstract: Method for testing a radio frequency (RF) data packet signal transceiver device under test (DUT) with multiple RF signal transmitters and RF signal receivers capable of concurrent operations. Multiple successions of test data packets from a tester to respective RF signal receivers of the DUT and multiple successions of responsive DUT data packets from respective RF signal transmitters of the DUT to the tester are conveyed such that multiple RF signal transmissions, multiple RF signal receptions, or RF signal transmission and reception are performed at least partially concurrently.

公开(公告)号：US09923647B1

公开(公告)日：2018-03-20

申请号：US15381618

申请日：2016-12-16

Applicant: LitePoint Corporation

Inventor： Christian Volf Olgaard ,  Zhiyong Huang ,  Yen-Fang Chao ,  Roman Schilter ,  Stefan Kildegaard Klukowski

IPC: H04B7/06 ,  H04B17/12

CPC classification number: H04B17/12

Abstract: A method for enabling confirmation of expected phase shifts of radio frequency (RF) signals emitted from respective elements of an antenna array, such as a phased array antenna used for providing directional RF signal radiation patterns needed for beamforming. As a RF signal transmitted via an antenna element of the antenna array is shifted, e.g., stepped, in phase, the resulting received RF signal is monitored. Following detection of a phase shift, a sample of the received RF signal is captured and stored, e.g., for subsequent analysis, such as comparison with one or more expected signal phase differences to characterize the directivity of the transmitted signal.

公开(公告)号：US09871601B2

公开(公告)日：2018-01-16

申请号：US14852821

申请日：2015-09-14

Applicant: LITEPOINT CORPORATION

Inventor： Christian Volf Olgaard ,  Ruizu Wang ,  Ke Liu ,  Fei Peng

IPC: H04W24/06 ,  H04B17/17 ,  H04B17/00 ,  H04W52/24

CPC classification number: H04B17/17 ,  H04B17/0085 ,  H04W52/242

Abstract: Method for testing a radio frequency (RF) data packet signal transceiver device under test (DUT) including communicating via each one of multiple available signal channels. Data packets exchanged between a tester and DUT as a normal part of a communication link initiation sequence are exchanged in such a manner that the tester transmits with varied signal power via all available channels simultaneously, thereby ensuring that a properly working DUT will transmit in response to reception of tester data packets having sufficient signal power. For example, in the case of a Bluetooth low energy transceiver, advertisement, scan request and scan response data packets can be used in such manner.

公开(公告)号：US09825717B2

公开(公告)日：2017-11-21

申请号：US14794178

申请日：2015-07-08

Applicant: LITEPOINT CORPORATION

Inventor： Christian Volf Olgaard ,  Ruizu Wang

IPC: H04B17/15 ,  H04B17/29 ,  H04L1/20

CPC classification number: H04B17/15 ,  H04B17/29 ,  H04L1/20

Abstract: Method for testing a radio frequency (RF) data packet signal transceiver device under test (DUT) including detecting transitions between RF data packet signal transmission and reception by the DUT, detecting transitions between different RF data packet signal transmission operations by the DUT, and detecting transitions between different RF data packet signal reception operations by the DUT.

公开(公告)号：US09497101B2

公开(公告)日：2016-11-15

申请号：US14476855

申请日：2014-09-04

Applicant: LITEPOINT CORPORATION

Inventor： Christian Volf Olgaard ,  Ruizu Wang

IPC: H04L12/26

CPC classification number: H04L43/50

Abstract: System and method for capturing and enabling analysis of one or more test data packets from a radio frequency (RF) data packet signal transmitter device under test (DUT). Recently captured data packets from a received RF data packet signal are retained for analysis following confirmation that they contain potentially valid test data packets. Such confirmation is achieved by confirming that a data pattern defined by currently captured data packets differs from a data pattern defined by subsequently received data packets. Following such confirmation, a trigger signal initiates access and/or analysis of the captured data packets.

Abstract translation: 用于捕获和启用来自被测试的射频（RF）数据分组信号发射机设备（DUT）的一个或多个测试数据分组的系统和方法。 从接收到的RF数据分组信号中最近捕获的数据分组被保留用于分析，以确认它们包含潜在有效的测试数据分组。 这样的确认是通过确认由当前捕获的数据分组定义的数据模式与由随后接收的数据分组定义的数据模式不同而实现的。 在这样的确认之后，触发信号启动所捕获的数据分组的访问和/或分析。

公开(公告)号：US09485040B2

公开(公告)日：2016-11-01

申请号：US13959354

申请日：2013-08-05

Applicant: LITEPOINT CORPORATION

Inventor： Christian Volf Olgaard ,  Guang Shi

IPC: H04B17/00 ,  H04B17/318 ,  H04B17/29

CPC classification number: H04B17/318 ,  H04B17/29

Abstract: 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.

Abstract translation: 一种使用测试数据分组信号测试作为数据分组信号功率（PWR）的函数的由具有由数据分组差错率（PER）定义的操作特性的被测数据分组信号收发器设备（DUT）的方法。 测试数据分组信号功率是变化的，并且作为DUT响应数据分组和测试数据分组的函数计算测试PER，直到测量的测试PER或从测量的PER推出的计算测试PER等于小于或等于预定的PER 分别为最大和最小PER。

公开(公告)号：US09319154B2

公开(公告)日：2016-04-19

申请号：US14256095

申请日：2014-04-18

Applicant: LITEPOINT CORPORATION

Inventor： Christian Volf Olgaard

IPC: H04B17/00

CPC classification number: H04B17/00 ,  H04B17/15

Abstract: Methods for testing multiple data packet signal transceiver devices under test (DUTs) with a shared tester. The DUTs transmit their data packet signals until predetermined numbers of data packets have been transmitted or predetermined time intervals expire, following which, each DUT awaits a synchronization request to begin transmitting data packets to the tester. Alternatively, the tester determines when its receiver is available for receiving data packets, following which, synchronization requests are sent to respective DUTs to initiate their transmissions of data packets to the tester. Further alternatively, power levels among data packets initially transmitted from the DUTs are monitored to determine when they are indicative of them having settled. As each DUT data packet signal power settles, a status signal indicating the settled nature of each DUT is provided to the tester which then begins receiving the respective DUT data packet signals, as they settle in power, for analysis.

Abstract translation: 用共享测试仪测试多个被测数据分组信号收发器设备（DUT）的方法。 DUT传送其数据分组信号，直到已经发送预定数量的数据分组或预定时间间隔到期，之后每个DUT等待同步请求开始向测试者发送数据分组。 或者，测试者确定其接收机何时可用于接收数据分组，随后将同步请求发送到相应的DUT以发起数据分组传输给测试者。 另外替代地，监视从DUT发送的数据分组中的功率电平，以确定它们何时指示它们已经结算。 当每个DUT数据分组信号功率稳定时，向测试者提供指示每个DUT的稳定性质的状态信号，然后测试器开始接收相应的DUT数据分组信号，因为它们定时处理，用于分析。