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公开(公告)号：US20150295598A1
公开(公告)日：2015-10-15
申请号：US14437908
申请日：2012-10-25
Applicant: NOKIA SOLUTIONS AND NETWORKS OY
Inventor： Jan Hellmann , Marko Fleischer , Norbert Hueller , Christian Reichl , Michael Kronwald
CPC classification number: H04B1/0466 , H04B17/101 , H04B17/103 , H04L5/14
Abstract: The present invention addresses apparatuses, methods and computer program product for providing improved distance to fault measurement for voltage standing wave ratio (VSWR) on antenna line in networks. An embodiment of he present invention comprises the steps of transmitting a signal to a line to be tested, capturing a forward signal of the signal, capturing a reverse signal of the signal, separating the reflection of the signal in time domain via cross correlation of the forward signal and the reverse signal, and detecting a distance to fault in the line by searching and processing maximum peak position of the captured and separated signals.
Abstract translation: 本发明涉及用于提供网络中天线线路上的电压驻波比（VSWR）的改进的故障测量距离的设备，方法和计算机程序产品。 本发明的一个实施例包括以下步骤：将信号发送到要测试的线路，捕获信号的正向信号，捕获信号的反向信号，通过信号的互相关分离信号在时域中的反射 正向信号和反向信号，并通过搜索和处理捕获和分离的信号的最大峰值位置来检测线路中的故障距离。
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Patent Agency Ranking
公开(公告)号：US09755673B2
公开(公告)日：2017-09-05
申请号：US14437908
申请日：2012-10-25
Applicant: Nokia Solutions and Networks Oy
Inventor： Jan Hellmann , Marko Fleischer , Norbert Hueller , Christian Reichl , Michael Kronwald
CPC classification number: H04B1/0466 , H04B17/101 , H04B17/103 , H04L5/14
Abstract: The present invention addresses apparatuses, methods and computer program product for providing improved distance to fault measurement for voltage standing wave ratio (VSWR) on antenna line in networks. An embodiment of the present invention comprises the steps of transmitting a signal to a line to be tested, capturing a forward signal of the signal, capturing a reverse signal of the signal, separating the reflection of the signal in time domain via cross correlation of the forward signal and the reverse signal, and detecting a distance to fault in the line by searching and processing maximum peak position of the captured and separated signals.
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公开(公告)号：US12040864B2
公开(公告)日：2024-07-16
申请号：US17797505
申请日：2020-02-10
Applicant: Nokia Solutions and Networks Oy
Inventor： Marko Fleischer , Jan Hellmann , Rene Roschke , Helmut Heinz
IPC: H04B7/06
CPC classification number: H04B7/0617 , H04B7/0695
Abstract: The present subject matter relates to an apparatus for a communication system. The apparatus is configured for: for each beam direction of a set of beam directions of an antenna array of the communication system, determining a level of a passive intermodulation, PIM, signal at a receiver of the communication system, the PIM signal being caused by a set of signals transmitted by the antenna array in the beam direction, identifying beam directions of the set of beam directions whose PIM level is higher than a predefined threshold, adapting a beamforming of signals in at least part of the identified beam directions to mitigate the PIM level at the receiver.
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公开(公告)号：US11575401B2
公开(公告)日：2023-02-07
申请号：US17487528
申请日：2021-09-28
Applicant: NOKIA SOLUTIONS AND NETWORKS OY
Inventor： Marko Fleischer , Jan Hellmann , Rene Röschke , Björn Jelonnek , Jürgen Hellstab
IPC: H04B1/12
Abstract: An apparatus includes an estimation circuitry configured to receive a first set of one or more digital signals of transmitters of a communication system, and capture a set of one or more radio frequency signals that have been generated from the first set of digital signals The set of radio frequency signals being input of an antenna system of the communication system. Based on the first set of digital signals and the corresponding set of radio frequency signals, a set of weights related to a distortion effect caused by the generation of the radio frequency signals is derived. A received second set of digital signals is weighted using the set of weights, resulting in filtered signals. Using the filtered signals, a correction signal indicative of an interference caused by transmission of the second set of digital signals at a receiver of the communication system is estimated.
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公开(公告)号：US11476809B2
公开(公告)日：2022-10-18
申请号：US16637937
申请日：2017-08-11
Applicant: NOKIA SOLUTIONS AND NETWORKS OY
Inventor： Michael Weber , Bjoern Jelonnek , Jan Hellmann
Abstract: A method comprises obtaining a transmission signal to be power-amplified in a power amplifier (361) prior to transmission; separating the transmission signal into two or more polyphase components of the transmission signal; feeding one or more polyphase components of the transmission signal comprised in the two or more polyphase components to each of two or more parallel predistortion circuits (320,321,322); selecting a dedicated predistortion model and dedicated predistortion coefficients for each of the two or more parallel predistortion circuits (320,321,322); performing non-linear memory-based modeling on the transmission signal according to the selected dedicated predistortion models and coefficients using the one or more polyphase components; and combining output signals of the two or more parallel predistortion circuits (320,321,322) to form a predistorted transmission signal (y[n]) to be applied to the power amplifier (361).
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公开(公告)号：US11284408B2
公开(公告)日：2022-03-22
申请号：US17236194
申请日：2021-04-21
Applicant: NOKIA SOLUTIONS AND NETWORKS OY
Inventor： Marko Fleischer , Rene Röschke , Jan Hellmann
Abstract: To take into account a passive intermodulation, resource blocks are associated with information indicating passive intermodulation impact of a corresponding resource block. The resource blocks are scheduled using the information.
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