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公开(公告)号：US20170195016A1
公开(公告)日：2017-07-06
申请号：US14988707
申请日：2016-01-05
申请人： Ixia
CPC分类号： H04B7/0417 , H04B7/0617 , H04B7/0626 , H04L1/1664
摘要： Systems and methods are disclosed herein to provide improved channel estimation and channel state information (CSI) transfer in a wireless data communication system, including but not limited to Multiple Input Multiple Output (MIMO) communication systems. In accordance with one or more embodiments and aspects thereof, a channel estimation and CSI transfer system is disclosed that extends and utilizes existing frame transfer elements to accomplish estimation and transfer. Such a system may offer improved capabilities such as a lower overhead CSI transfer, reduced data transfer latency, and more frequent CSI measurements.
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2.发明申请SYSTEMS AND METHODS FOR USING PROTOCOL INFORMATION TO TRIGGER WAVEFORM ANALYSIS 有权使用协议信息来触发波形分析的系统和方法公开(公告)号：US20140254647A1
公开(公告)日：2014-09-11
申请号：US13785878
申请日：2013-03-05
申请人： IXIA
发明人： Lester Noel Stott , David Jennings Wicker, JR. , Jeffrey Dean Marker , Alexander David Rekow , Timothy Earl Bennington-Davis , Thomas Alexander
IPC分类号： H04L12/26
摘要： Systems and methods are disclosed herein to provide communication test systems for the testing of packet data communication devices, systems and networks. According to one aspect of the subject matter described herein, a test system containing an integrated traffic, protocol and waveform analyzer is disclosed that includes a traffic generator/analyzer and a protocol engine that triggers a waveform analyzer to analyze the signal waveform of a device under test at a predetermined point. Such a test system may offer improved capabilities such as a more selective and accurate measurement of complex signal waveforms, more automated measurements of waveforms pertaining to wireless communication data streams, and more rapid identification and measurement of waveforms corresponding to errored packets.
摘要翻译： 本文公开了系统和方法，以提供用于分组数据通信设备，系统和网络的测试的通信测试系统。 根据本文所描述的主题的一个方面，公开了一种包含集成业务，协议和波形分析器的测试系统，其包括业务发生器/分析器和协议引擎，其触发波形分析器来分析设备的信号波形 在预定点进行测试。 这样的测试系统可以提供改进的能力，例如复杂信号波形的更选择性和精确的测量，与无线通信数据流相关的波形的更自动化测量，以及更快速地识别和测量与误差分组相对应的波形。
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公开(公告)号：US20160373196A1
公开(公告)日：2016-12-22
申请号：US14746733
申请日：2015-06-22
申请人： Ixia
IPC分类号： H04B17/336 , H04B7/04
CPC分类号： H04W24/08 , H04B7/0452 , H04B17/0085 , H04B17/0087 , H04B17/336 , H04B17/391 , H04W24/06
摘要： Systems and methods are disclosed herein to provide communication test systems for the mobility testing of multi-user multiple-input multiple-output (MU-MIMO) radio frequency wireless data communication devices, systems and networks. In accordance with one or more embodiments, a test system containing an MU-MIMO traffic generator and analyzer is disclosed that includes a mobility effects scheduler operative in conjunction with a channel impairment simulator to perform tests related to mobile MU-MIMO devices such as wireless clients and terminals. Such a test system may offer improved capabilities, such as flexible measurements of mobility performance, more accurate assessments of MU-MIMO wireless channel utilization and data throughput, measurements on MU-MIMO devices under mobility stress, and automated measurements of MU-MIMO mobility testing.
摘要翻译： 本文公开了系统和方法，以提供用于多用户多输入多输出（MU-MIMO）射频无线数据通信设备，系统和网络的移动性测试的通信测试系统。 根据一个或多个实施例，公开了一种包含MU-MIMO业务发生器和分析器的测试系统，其包括结合信道损害模拟器操作的移动性效应调度器，以执行与诸如无线客户端的移动MU-MIMO设备相关的测试 和终端。 这样的测试系统可以提供改进的能力，例如移动性能的灵活测量，MU-MIMO无线信道利用率和数据吞吐量的更准确的评估，在移动性压力下的MU-MIMO设备上的测量以及MU-MIMO移动性测试的自动测量 。
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4.发明授权Systems and methods for using protocol information to trigger waveform analysis 有权使用协议信息触发波形分析的系统和方法公开(公告)号：US09369369B2
公开(公告)日：2016-06-14
申请号：US13785878
申请日：2013-03-05
申请人： Ixia
发明人： Lester Noel Stott , David Jennings Wicker, Jr. , Jeffrey Dean Marker , Alexander David Rekow , Timothy Earl Bennington-Davis , Thomas Alexander
摘要： Systems and methods are disclosed herein to provide communication test systems for the testing of packet data communication devices, systems and networks. According to one aspect of the subject matter described herein, a test system containing an integrated traffic, protocol and waveform analyzer is disclosed that includes a traffic generator/analyzer and a protocol engine that triggers a waveform analyzer to analyze the signal waveform of a device under test at a predetermined point. Such a test system may offer improved capabilities such as a more selective and accurate measurement of complex signal waveforms, more automated measurements of waveforms pertaining to wireless communication data streams, and more rapid identification and measurement of waveforms corresponding to errored packets.
摘要翻译： 本文公开了系统和方法，以提供用于分组数据通信设备，系统和网络的测试的通信测试系统。 根据本文所描述的主题的一个方面，公开了一种包含集成业务，协议和波形分析器的测试系统，其包括业务发生器/分析器和协议引擎，其触发波形分析器来分析设备的信号波形 在预定点进行测试。 这样的测试系统可以提供改进的能力，例如复杂信号波形的更选择性和精确的测量，与无线通信数据流相关的波形的更自动化测量，以及更快速地识别和测量与误差分组相对应的波形。
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公开(公告)号：US09083454B2
公开(公告)日：2015-07-14
申请号：US14043799
申请日：2013-10-01
申请人： Ixia
发明人： David Jennings Wicker, Jr. , Lester Noel Stott , Jeffrey Dean Marker , Alexander David Rekow , Thomas Alexander
CPC分类号： H04B17/00 , H04B7/0417 , H04B7/0452 , H04B7/0617 , H04B7/0619 , H04B17/0085 , H04B17/336 , H04B17/391 , H04L25/0204
摘要： Systems and methods are disclosed herein to provide communication test systems for the testing of multiple-input multiple-output (MIMO) radio frequency wireless data communication devices, systems and networks, including Multi-User MIMO (MU-MIMO) devices and systems. In accordance with one or more embodiments, a test system containing an integrated MIMO signal analyzer is disclosed that includes a protocol engine operative in conjunction with a waveform generator and waveform analyzer that analyzes the signal waveform of a device under test. Such a test system may offer improved capabilities such as a simpler and more flexible measurement of complex MIMO signal waveforms, more automated measurements of MIMO waveforms including beamforming functions, and more accurate measurement of the efficiency of MIMO related functions such as channel estimation, transmit precoding and beamforming.
摘要翻译： 本文公开了系统和方法，以提供用于测试包括多用户MIMO（MU-MIMO）设备和系统的多输入多输出（MIMO）射频无线数据通信设备，系统和网络的通信测试系统。 根据一个或多个实施例，公开了一种包含集成MIMO信号分析器的测试系统，其包括与波形发生器和波形分析仪相结合的协议引擎，波形发生器和波形分析器分析被测器件的信号波形。 这样的测试系统可以提供改进的能力，例如复杂MIMO信号波形的更简单和更灵活的测量，包括波束成形功能的MIMO波形的更自动测量以及MIMO相关功能的效率的更准确的测量，例如信道估计，传输预编码 和波束成形。
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公开(公告)号：US10305713B2
公开(公告)日：2019-05-28
申请号：US14927365
申请日：2015-10-29
申请人： Ixia
发明人： Lester Noel Stott
摘要： Systems and methods are disclosed herein to provide efficient support for the exchange of trigger information between wireless data communication devices and systems, including Multi-User Multiple Input Multiple Output (MU-MIMO) devices and systems that may utilize Orthogonal Frequency Division Multiple Access (OFDMA). In accordance with one or more embodiments, a trigger information exchange mechanism is disclosed that transfers trigger data as part of a pre-existing data frame handshake. Such a system may offer improved capabilities such as a reduced channel overhead incurred due to the trigger information exchange.
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公开(公告)号：US09876543B2
公开(公告)日：2018-01-23
申请号：US14988707
申请日：2016-01-05
申请人： Ixia
IPC分类号： H04L1/16 , H04B7/0417 , H04B7/06
CPC分类号： H04B7/0417 , H04B7/0617 , H04B7/0626 , H04L1/1664
摘要： Systems and methods are disclosed herein to provide improved channel estimation and channel state information (CSI) transfer in a wireless data communication system, including but not limited to Multiple Input Multiple Output (MIMO) communication systems. In accordance with one or more embodiments and aspects thereof, a channel estimation and CSI transfer system is disclosed that extends and utilizes existing frame transfer elements to accomplish estimation and transfer. Such a system may offer improved capabilities such as a lower overhead CSI transfer, reduced data transfer latency, and more frequent CSI measurements.
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公开(公告)号：US20150369851A1
公开(公告)日：2015-12-24
申请号：US14308676
申请日：2014-06-18
申请人： Ixia
发明人： Dov Even , Lester Noel Stott
CPC分类号： G01R29/105 , G01R29/0878 , H01Q1/526
摘要： Systems and methods are disclosed herein to provide shielding and radio frequency (RF) antenna coupling for communication test systems for the testing of wireless data communication devices and systems, including Multiple Input Multiple Output (MIMO) devices and systems. In accordance with one or more embodiments, a shielding and coupling system containing an array of RF antennas is disclosed that includes a flexible jacket integrated with RF shielding material that simultaneously isolates a device under test (DUT) and couples signals from the antennas of the DUT. Such a system may offer improved capabilities such as a faster and more efficient method of isolating the DUT from external interference, a more repeatable and simplified method of transmitting and receiving MIMO RF signals from DUTs having built-in antennas, and a more portable and lower cost RF test setup.
摘要翻译： 本文公开了系统和方法，以为包括多输入多输出（MIMO）设备和系统的无线数据通信设备和系统的测试提供用于通信测试系统的屏蔽和射频（RF）天线耦合。 根据一个或多个实施例，公开了一种包含RF天线阵列的屏蔽和耦合系统，其包括与RF屏蔽材料集成的柔性护套，其同时隔离被测器件（DUT）并耦合来自DUT的天线的信号 。 这样的系统可以提供改进的能力，例如将DUT与外部干扰隔离的更快更有效的方法，从具有内置天线的DUT发送和接收MIMO RF信号的更可重复和简化的方法，以及更便携和更低的 成本RF测试设置。
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公开(公告)号：US10362048B2
公开(公告)日：2019-07-23
申请号：US15153695
申请日：2016-05-12
申请人： Ixia
IPC分类号： H04L29/06
摘要： Systems and methods are disclosed herein to provide improved online security testing of security devices and networks, including but not limited to networks containing wireless access points. In accordance with one or more embodiments and aspects thereof, a distributed online test system is disclosed that combines an online test manager with one or more remote probes to generate simulated attacks and verify their effectiveness. Such a system may offer improved capabilities such as the ability to conduct attacks over geographically distributed network topologies, the ability to assess the security functions of wireless networks, and simpler and more cost-effective online security testing.
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公开(公告)号：US20170331847A1
公开(公告)日：2017-11-16
申请号：US15153695
申请日：2016-05-12
申请人： Ixia
IPC分类号： H04L29/06
CPC分类号： H04L63/1433 , H04L63/1408 , H04L63/1441
摘要： Systems and methods are disclosed herein to provide improved online security testing of security devices and networks, including but not limited to networks containing wireless access points. In accordance with one or more embodiments and aspects thereof, a distributed online test system is disclosed that combines an online test manager with one or more remote probes to generate simulated attacks and verify their effectiveness. Such a system may offer improved capabilities such as the ability to conduct attacks over geographically distributed network topologies, the ability to assess the security functions of wireless networks, and simpler and more cost-effective online security testing.
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