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1. 发明申请

US20150017928A1 OVER-THE-AIR TESTING OF WIRELESS DEVICES USING LOG FILES 审中-公开
标题翻译：使用日志文件进行无线设备的空中测试
公开(公告)号：US20150017928A1
公开(公告)日：2015-01-15
申请号：US14327356
申请日：2014-07-09
申请人： Azimuth Systems, Inc.
发明人： John Robert Griesing , Shabbir A. Bagasrawala
IPC分类号： H04B17/00
CPC分类号： H04B17/29 , H04B17/0085 , H04B17/0087
摘要： An over-the-air test system for wireless devices uses log files to simulate realistic time-varying channel conditions and provides channel state information to enable dynamic adaptation to current channel conditions. A signal transmission device transmits test signals to the device under test via a channel emulator. The channel emulator causes the test signals to exhibit channel conditions which vary over time. An over-the-air test chamber in which the device under test is disposed includes multiple antennas which are driven with the test signals from the channel emulator. Channel state information is sent from the device under test to the signal transmission device. The signal transmission device responds to the channel state information by adapting to current channel conditions.
摘要翻译：无线设备的无线测试系统使用日志文件来模拟逼真的时变信道条件，并提供信道状态信息以使得能够动态地适应当前信道条件。信号传输设备通过信道仿真器将测试信号发送到被测器件。信道仿真器使测试信号显示随时间变化的信道条件。设置被测设备的空中测试室包括多个天线，它们由来自信道仿真器的测试信号驱动。信道状态信息从被测设备发送到信号传输装置。信号发送装置通过适应当前信道条件来响应信道状态信息。

2. 发明申请

US20130052962A1 Plane Wave Generation Within A Small Volume Of Space For Evaluation of Wireless Devices 有权
公开(公告)号：US20130052962A1
公开(公告)日：2013-02-28
申请号：US13569518
申请日：2012-08-08
申请人： Thorkild Hansen
发明人： Thorkild Hansen
IPC分类号： H04B17/00
CPC分类号： H04W24/08 , G01R29/0871 , G01R29/0892 , G01R29/105
摘要： Small anechoic chambers for evaluating a wireless device under test (DUT) are characterized by a set of antennas to which a test signal is applied and for which excitation coefficients are applied such that the test signal approximates a single plane wave or a preselected superposition of plane waves in the near field of the antennas. The test-equipment antennas in the chamber may be as close as one wavelength from the boundary of a test zone in which the DUT is disposed. Hence, the test zone can be in the near field of the test-equipment antennas and the test zone can be less than a wavelength from the chamber walls. Consequently, it is possible to perform tests in a small anechoic chamber that previously required a large anechoic chamber, e.g., advanced spatial channel-model tests and antenna-pattern measurements.

3. 发明授权

US07349670B2 Modular wireless test architecture and method 有权
标题翻译：模块化无线测试架构和方法
公开(公告)号：US07349670B2
公开(公告)日：2008-03-25
申请号：US11208398
申请日：2005-08-19
申请人： Fanny Mlinarsky , Charles R. Wright
发明人： Fanny Mlinarsky , Charles R. Wright
IPC分类号： H04B17/00
CPC分类号： H04B17/391
摘要： A modular test chassis for use in testing wireless devices includes a backplane and a channel emulation module coupled to the backplane. The channel emulation module comprises circuitry for emulating the effects of a dynamic physical environment (including air, interfering signals, interfering structures, movement, etc.) on signals in the transmission channel shared by the first and second device. Different channel emulation modules may be included in the test system depending upon the protocol, network topology or capability under test. A test module may be provided to generate traffic at multiple interfaces of SISO or MIMO DUTs to enable thorough testing of device and system behavior in the presence of emulated network traffic and fault conditions. A latency measurement system and method applies timestamps frames as they are transmit and received at the test module for improved latency measurement accuracy.
摘要翻译：用于测试无线设备的模块化测试机箱包括耦合到背板的背板和通道仿真模块。信道仿真模块包括用于模拟由第一和第二设备共享的传输信道中的信号的动态物理环境（包括空中，干扰信号，干扰结构，移动等）的影响的电路。取决于协议，网络拓扑或被测能力，不同的通道仿真模块可能包含在测试系统中。可以提供测试模块以在SISO或MIMO DUT的多个接口处产生流量，以在存在仿真的网络流量和故障条件的情况下实现设备和系统行为的彻底测试。延迟测量系统和方法在测试模块发送和接收时应用时间戳帧，以提高延迟测量精度。

4. 发明授权

US07075893B1 Test system for simulating a wireless environment and method of using same 失效
标题翻译：用于模拟无线环境的测试系统及其使用方法
公开(公告)号：US07075893B1
公开(公告)日：2006-07-11
申请号：US10776413
申请日：2004-02-11
申请人： Fanny I. Mlinarsky , Charles R. Wright , John R. Griesing
发明人： Fanny I. Mlinarsky , Charles R. Wright , John R. Griesing
IPC分类号： H04Q7/24
CPC分类号： H04W24/06 , H04B7/0802 , H04B17/3912 , H04L41/145 , H04L43/50
摘要： A method and system for simulating a wireless environment is provided including a central RF combining component; a plurality of connection nodes, each connection node in RF connection with the central RF combining component through a programmable attenuation component; wherein the programmable attenuation components are controlled by a controller console, the controller console maintaining information regarding simulated spatial positioning of the plurality of connection nodes in the simulated wireless environment, and adjusting the programmable attenuation components to appropriately simulate the simulated spatial positioning of the connection nodes in the simulated wireless environment. Additionally, an RF module for creating and receiving RF signals in a test environment is provided.
摘要翻译：提供了一种用于模拟无线环境的方法和系统，包括中央RF组合组件; 多个连接节点，通过可编程衰减分量与所述中央RF组合部件RF连接的每个连接节点; 其中所述可编程衰减分量由控制器控制台控制，所述控制器控制台维持关于所述模拟无线环境中的所述多个连接节点的模拟空间定位的信息，以及调整所述可编程衰减分量以适当地模拟所述连接节点的模拟空间定位在模拟无线环境中。另外，提供了用于在测试环境中创建和接收RF信号的RF模块。

5. 发明授权

US10306492B2 Small cell interference emulator 有权
公开(公告)号：US10306492B2
公开(公告)日：2019-05-28
申请号：US14327318
申请日：2014-07-09
申请人： Azimuth Systems, Inc.
发明人： John Robert Griesing , Charles R. Wright
IPC分类号： H04W24/06 , H04W16/22
摘要： A heterogeneous network scenario is simulated using a combination of real cells, real user devices, and a multi-cell network emulator which provides emulated cells, emulated real devices, and channel emulation. The multi-cell network emulator may utilize playback files and signals from the real cells and real user devices to generate emulated cell signals and emulated real device signals. Further, a single real signal can be utilized to generate multiple emulated signals.

6. 发明申请

US20150304870A1 Plane Wave Generation Within A Small Volume Of Space For Evaluation of Wireless Devices 审中-公开
标题翻译：用于无线设备评估的小体积空间内的平面波生成
公开(公告)号：US20150304870A1
公开(公告)日：2015-10-22
申请号：US14731916
申请日：2015-06-05
申请人： Azimuth Systems, Inc.
发明人： Thorkild Hansen
IPC分类号： H04W24/08 , G01R29/10
CPC分类号： H04W24/08 , G01R29/0871 , G01R29/0892 , G01R29/105
摘要： Small anechoic chambers for evaluating a wireless device under test (DUT) are characterized by a set of antennas to which a test signal is applied and for which excitation coefficients are applied such that the test signal approximates a single plane wave or a preselected superposition of plane waves in the near field of the antennas. The test-equipment antennas in the chamber may be as close as one wavelength from the boundary of a test zone in which the DUT is disposed. Hence, the test zone can be in the near field of the test-equipment antennas and the test zone can be less than a wavelength from the chamber walls. Consequently, it is possible to perform tests in a small anechoic chamber that previously required a large anechoic chamber, e.g., advanced spatial channel-model tests and antenna-pattern measurements.
摘要翻译：用于评估被测试无线设备（DUT）的小型暗暗室的特征在于一组天线，其中施加了测试信号并且对其施加激励系数，使得测试信号接近单个平面波或预选的平面叠加在天线的近场波。室内的测试设备天线可以距离DUT所在的测试区域的边界那么近一个波长。因此，测试区可以在测试设备天线的近场中，并且测试区可以小于从室壁的波长。因此，可以在先前需要大型消声室的小型电波暗室中进行测试，例如先进的空间通道模型测试和天线图案测量。

7. 发明申请

US20150023188A1 COMPARATIVE ANALYSIS OF WIRELESS DEVICES 审中-公开
标题翻译：无线设备的比较分析
公开(公告)号：US20150023188A1
公开(公告)日：2015-01-22
申请号：US14270529
申请日：2014-05-06
申请人： Azimuth Systems, Inc.
发明人： Deepak Das , Nandish Chalishazar , Eric Ely
IPC分类号： H04W24/10
CPC分类号： H04W24/10 , G01R31/2822 , G01R31/3181 , G01R31/319
摘要： A plurality of wireless devices which communicate with at least one other device are simultaneously tested using a test regime which includes a plurality of corresponding comparative tasks. Commencement of each task by all wireless devices is synchronized. Test results are analyzed and a side-by-side comparison is provided on an overall, per task type, and per task basis.
摘要翻译：使用包括多个相应比较任务的测试方案来同时测试与至少一个其他设备通信的多个无线设备。所有无线设备的每个任务的启动是同步的。分析测试结果，并且在整体，每个任务类型和每个任务的基础上提供并排比较。

8. 发明申请

US20150016290A1 SMALL CELL INTERFERENCE EMULATOR 审中-公开
标题翻译：小电容干扰仿真器
公开(公告)号：US20150016290A1
公开(公告)日：2015-01-15
申请号：US14327318
申请日：2014-07-09
申请人： Azimuth Systems, Inc.
发明人： John Robert Griesing , Charles R. Wright
IPC分类号： H04W24/06
CPC分类号： H04W24/06 , H04W16/22
摘要： A heterogeneous network scenario is simulated using a combination of real cells, real user devices, and a multi-cell network emulator which provides emulated cells, emulated real devices, and channel emulation. The multi-cell network emulator may utilize playback files and signals from the real cells and real user devices to generate emulated cell signals and emulated real device signals. Further, a single real signal can be utilized to generate multiple emulated signals.
摘要翻译：使用真实单元，实际用户设备和提供仿真单元，仿真真实设备和信道仿真的多小区网络仿真器的组合来模拟异构网络场景。多小区网络仿真器可以利用来自真实小区和真实用户设备的播放文件和信号来产生仿真的小区信号和仿真的实际设备信号。此外，可以利用单个实际信号来产生多个仿真信号。

9. 发明授权

US07889663B1 Evaluation of handoff in wireless networks using emulation 有权
标题翻译：使用仿真评估无线网络中的切换
公开(公告)号：US07889663B1
公开(公告)日：2011-02-15
申请号：US11179884
申请日：2005-07-12
申请人： Charles R. Wright , Fanny I. Mlinarsky , John E. Ziegler
发明人： Charles R. Wright , Fanny I. Mlinarsky , John E. Ziegler
IPC分类号： H04W28/00
CPC分类号： H04W24/06 , H04W36/30 , H04W84/12
摘要： Test equipment operable to evaluate handoff in wireless networks can be configured as an infrastructure test system or a client mobility test system. The infrastructure test system includes a plurality of client emulating devices and a client motion emulator for testing real access points. Each client emulating device is operable to emulate multiple individual virtual mobile devices (“virtual mobile devices”). The client motion emulator computes a mathematical representation of the modeled network and motion of virtual mobile devices in that network. The client motion emulator employs the mathematical representation to calculate path loss between virtual mobile devices and the real access points in the modeled network. The calculated path loss information is transmitted to the virtual mobile devices. Path loss of communications from a virtual mobile device to an access point is implemented via a programmable attenuator.
摘要翻译：可用于评估无线网络切换的测试设备可以配置为基础设施测试系统或客户端移动性测试系统。基础设施测试系统包括多个客户端仿真设备和用于测试实际接入点的客户端运动仿真器。每个客户端仿真设备可操作以模拟多个单独的虚拟移动设备（“虚拟移动设备”）。客户运动仿真器计算建模网络的数学表示和该网络中的虚拟移动设备的运动。客户端运动仿真器采用数学表示来计算虚拟移动设备与建模网络中的实际接入点之间的路径损耗。所计算的路径损耗信息被发送到虚拟移动设备。通过可编程衰减器实现从虚拟移动设备到接入点的通信路径损耗。

10. 发明授权

US09699678B2 Plane wave generation within a small volume of space for evaluation of wireless devices 有权
公开(公告)号：US09699678B2
公开(公告)日：2017-07-04
申请号：US14731916
申请日：2015-06-05
申请人： Azimuth Systems, Inc.
发明人： Thorkild Hansen
IPC分类号： H04B17/00 , H04W24/08 , G01R29/10 , G01R29/08
CPC分类号： H04W24/08 , G01R29/0871 , G01R29/0892 , G01R29/105
摘要： Small anechoic chambers for evaluating a wireless device under test (DUT) are characterized by a set of antennas to which a test signal is applied and for which excitation coefficients are applied such that the test signal approximates a single plane wave or a preselected superposition of plane waves in the near field of the antennas. The test-equipment antennas in the chamber may be as close as one wavelength from the boundary of a test zone in which the DUT is disposed. Hence, the test zone can be in the near field of the test-equipment antennas and the test zone can be less than a wavelength from the chamber walls. Consequently, it is possible to perform tests in a small anechoic chamber that previously required a large anechoic chamber, e.g., advanced spatial channel-model tests and antenna-pattern measurements.

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