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公开(公告)号：US20170026107A1
公开(公告)日：2017-01-26
申请号：US15302334
申请日：2015-04-07
Applicant: CommScope Technologies LLC
Inventor： Keld Knut Lange , Luigi Tarlazzi
IPC: H04B7/155
Abstract: A digital repeater system for repeating RF signals comprises: a receiving section for receiving an RF input signal, the RF input signal comprising at least one frequency band including a multiplicity of subbands associated with a multiplicity of communication channels; and at least one transmitting section for transmitting the RF output signal. The receiving section is constituted to digitize the RF input signal to obtain a digital input signal and to isolate, within the digital input signal, the multiplicity of subbands from each other to obtain a multiplicity of digital subband signals. The at least one transmitting section is constituted to combine the digital subband signals to obtain a digital output signal and to convert the digital output signal to an RF output signal. In addition, the receiving section comprises a power profile estimation unit for determining a power estimate for each digital subband signal associated with the multiplicity of subbands and a muting device for muting a digital subband signal of a particular subband based on the power estimate. In this way a digital repeater system for repeating RF signals is provided which allows for a detection of unused portions of a frequency band in order to improve the performance of the overall system.
Abstract translation: 一种用于重复RF信号的数字中继器系统包括：接收部分，用于接收RF输入信号，所述RF输入信号包括至少一个包括与多个通信信道相关联的多个子带的频带; 以及用于发送RF输出信号的至少一个发送部分。 接收部分被构造成数字化RF输入信号以获得数字输入信号并且在数字输入信号内隔离多个子带彼此以获得多个数字子带信号。 所述至少一个发送部分被组合以组合数字子带信号以获得数字输出信号并将数字输出信号转换成RF输出信号。 此外，接收部分包括用于确定与多个子带相关联的每个数字子带信号的功率估计的功率分布估计单元和用于根据功率估计使特定子带的数字子带信号静噪的静噪装置。 以这种方式，提供了用于重复RF信号的数字中继器系统，其允许检测频带的未使用部分，以便提高整个系统的性能。
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公开(公告)号：US20160352411A1
公开(公告)日：2016-12-01
申请号：US15114624
申请日：2015-01-21
Applicant: CommScope Technologies LLC
Inventor： Keld Knut Lange
CPC classification number: H04B7/15585 , H04B1/525 , H04L25/03012 , H04L25/03082 , H04L2025/03496 , H04W88/085
Abstract: Certain features relate to a remote antenna unit having a multi-stage isolation sub-system for isolating uplink and downlink signal paths. A multi-stage isolation sub-system in the remote antenna unit can include a first stage device that is configured to generate a cancellation signal for canceling unwanted downlink signals received at the uplink antenna. The isolation sub-system can also include a second stage device configured to generate a cancellation signal that attenuates residual noise and intermodulation products generated in the downlink path and received in the uplink path. The multi-stage isolation sub-system can combine the cancellation signals with signals received on the uplink path in order to cancel or attenuate downlink leakage signals and residual noise present on the uplink path.
Abstract translation: 某些特征涉及具有用于隔离上行链路和下行链路信号路径的多级隔离子系统的远程天线单元。 远程天线单元中的多级隔离子系统可以包括第一级设备，其被配置为生成用于消除在上行链路天线处接收的不希望的下行链路信号的消除信号。 隔离子系统还可以包括被配置为产生消除信号的第二级装置，该消除信号衰减在下行链路路径中生成并在上行链路路径中接收的残余噪声和互调产物。 多级隔离子系统可以将消除信号与在上行链路路径上接收的信号相结合，以消除或衰减上行链路路径上存在的下行链路泄漏信号和残留噪声。
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公开(公告)号：US20160285521A1
公开(公告)日：2016-09-29
申请号：US14655606
申请日：2015-03-05
Applicant: COMMSCOPE TECHNOLOGIES LLC
Inventor： Keld Knut Lange
CPC classification number: H04B7/022 , H04B1/1027 , H04B7/0868 , H04B7/155 , H04B7/15507 , H04W88/085
Abstract: A multistage combining sub-system for a distributed antenna system (“DAS”) is disclosed. The combining sub-system can receive broadband uplink signals from remote units of the DAS. The sub-system can divide the received broadband uplink signals into sets of narrowband uplink signals. The combining sub-system can select subsets of narrowband uplink signals from the sets of narrowband uplink signals. The subsets can be selected based on the narrowband signals in the subsets having signal powers above a threshold signal power. The combining sub-system can combine the selected subsets of narrowband uplink signals for routing to a base station. Combining the selected subsets of narrowband uplink signals can involve excluding narrowband uplink signals that are not included in the selected subsets of narrowband uplink signals.
Abstract translation: 公开了一种用于分布式天线系统（“DAS”）的多级组合子系统。 组合子系统可以从DAS的远程单元接收宽带上行链路信号。 子系统可以将接收的宽带上行链路信号划分成窄带上行链路信号的集合。 组合子系统可以从窄带上行链路信号集合中选择窄带上行链路信号的子集。 可以基于具有高于阈值信号功率的信号功率的子集中的窄带信号来选择子集。 组合子系统可以组合所选择的窄带上行链路信号子集用于路由到基站。 组合所选择的窄带上行链路信号的子集可以包括排除窄带上行链路信号中未包括的窄带上行链路信号。
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公开(公告)号：US20150296527A1
公开(公告)日：2015-10-15
申请号：US14686415
申请日：2015-04-14
Applicant: COMMSCOPE TECHNOLOGIES LLC
Inventor： Christopher G. Ranson , Thomas Kummetz , Van E. Hanson , Keld Knut Lange
CPC classification number: H04B15/02 , H04B1/525 , H04W88/085
Abstract: Certain aspects involve a wideband remote unit. The wideband remote unit can include one or more antennas and an analog-to-digital converter (“ADC”). The antenna can receive wideband signals. The wideband signals can include an uplink RF signal and a leaked downlink RF signal. The uplink RF signal can have an uplink signal power at or near a noise level. The leaked downlink RF signal can have a downlink signal power greater than the uplink signal power. The ADC can convert the received wideband signals to digital RF signals representing the uplink signal and the downlink signal. The wideband remote unit can transmit the digital RF signals to a unit of a DAS that is in communication with a base station.
Abstract translation: 某些方面涉及宽带远程单元。 宽带远程单元可以包括一个或多个天线和模数转换器（“ADC”）。 天线可以接收宽带信号。 宽带信号可以包括上行链路RF信号和泄漏的下行链路RF信号。 上行链路RF信号可以具有处于或接近噪声电平的上行链路信号功率。 泄漏的下行链路RF信号可以具有大于上行链路信号功率的下行链路信号功率。 ADC可以将接收的宽带信号转换成表示上行链路信号和下行链路信号的数字RF信号。 宽带远程单元可以将数字RF信号发送到与基站通信的DAS的单元。
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公开(公告)号：US11362728B2
公开(公告)日：2022-06-14
申请号：US16995519
申请日：2020-08-17
Applicant: CommScope Technologies LLC
Inventor： Keld Knut Lange
Abstract: A digital multichannel interface for a first unit of a radio distribution system, the digital multichannel interface comprising a first uplink interface and a first downlink interface. The first uplink interface is configured to receive uplink transmit frames from a second unit of the radio distribution system, the uplink transmit frames including frame timing information, the radio distribution system including a plurality of remote units communicatively coupled to at least one of the first unit or the second unit. The first downlink interface is configured to: generate a plurality of reformatted wideband downlink I/Q data streams based on the frame timing information extracted from the uplink transmit frames received from the second unit; generate downlink transmit frames including the plurality of reformatted wideband downlink I/Q data streams; and provide the downlink transmit frames to the second unit.
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Patent Agency Ranking
公开(公告)号：US10749590B2
公开(公告)日：2020-08-18
申请号：US15520792
申请日：2015-05-27
Applicant: CommScope Technologies LLC
Inventor： Keld Knut Lange
Abstract: Certain features relate to a digital multichannel interface between a base station and a repeater in a telecommunications system, such as a distributed antenna system. The digital multichannel interface can provide streams of I/Q samples that carry information from multiple carriers of a wideband communications signal as well as semi-static control information for the telecommunications system. The digital multichannel interface can also transport frame timing information between the base station and the repeater. The frame timing information can maintain synchronization between the uplink transmit frames carrying uplink I/Q samples and the downlink transmit frames carrying downlink I/Q samples.
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公开(公告)号：US20200177270A1
公开(公告)日：2020-06-04
申请号：US16780370
申请日：2020-02-03
Applicant: CommScope Technologies LLC
Inventor： Keld Knut Lange , Luigi Tarlazzi
IPC: H04B7/155
Abstract: A digital repeater system for repeating RF signals comprises: a receiving section for receiving an RF input signal, the RF input signal comprising at least one frequency band including a multiplicity of subbands associated with a multiplicity of communication channels; and at least one transmitting section for transmitting the RF output signal. The receiving section is constituted to digitize the RF input signal to obtain a digital input signal and to isolate, within the digital input signal, the multiplicity of subbands from each other to obtain a multiplicity of digital subband signals. The at least one transmitting section is constituted to combine the digital subband signals to obtain a digital output signal and to convert the digital output signal to an RF output signal. In addition, the receiving section comprises a power profile estimation unit for determining a power estimate for each digital subband signal associated with the multiplicity of subbands and a muting device for muting a digital subband signal of a particular subband based on the power estimate. In this way a digital repeater system for repeating RF signals is provided which allows for a detection of unused portions of a frequency band in order to improve the performance of the overall system.
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公开(公告)号：US10536915B2
公开(公告)日：2020-01-14
申请号：US15857290
申请日：2017-12-28
Applicant: CommScope Technologies LLC
Inventor： Keld Knut Lange
Abstract: Certain features relate to compensating for a roundtrip delay caused by a distributed antenna system. A delay unit communicatively coupled to a base station can intercept the delay compensation signaling communicated between the digital baseband unit of the base station and the radio transmitter unit of the base station. The delay unit can adjust the delay compensation signaling by adding to the delay compensation signaling the pre-determined fiber delay caused by the DAS. In some aspects, the delay unit can delay the control words for a base station operating under the Common Public Radio Interface standard. In other aspects, the delay unit can delay the round-trip time measurement message for a base station operating under the Open Base Station Architecture Initiative standard.
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公开(公告)号：US20180302177A1
公开(公告)日：2018-10-18
申请号：US16011333
申请日：2018-06-18
Applicant: CommScope Technologies LLC
Inventor： Christopher Goodman Ranson , Thomas Kummetz , Van E. Hanson , Keld Knut Lange
Abstract: Certain aspects involve a wideband remote unit. The wideband remote unit can include one or more antennas and an analog-to-digital converter (“ADC”). The antenna can receive wideband signals. The wideband signals can include an uplink RF signal and a leaked downlink RF signal. The uplink RF signal can have an uplink signal power at or near a noise level. The leaked downlink RF signal can have a downlink signal power greater than the uplink signal power. The ADC can convert the received wideband signals to digital RF signals representing the uplink signal and the downlink signal. The wideband remote unit can transmit the digital RF signals to a unit of a DAS that is in communication with a base station.
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公开(公告)号：US10103802B2
公开(公告)日：2018-10-16
申请号：US15679247
申请日：2017-08-17
Applicant: CommScope Technologies LLC
Inventor： Keld Knut Lange
Abstract: Certain features relate to a remote antenna unit having a multi-stage isolation sub-system for isolating uplink and downlink signal paths. A multi-stage isolation sub-system in the remote antenna unit can include a first stage device that is configured to generate a cancellation signal for canceling unwanted downlink signals received at the uplink antenna. The isolation sub-system can also include a second stage device configured to generate a cancellation signal that attenuates residual noise and intermodulation products generated in the downlink path and received in the uplink path. The multi-stage isolation sub-system can combine the cancellation signals with signals received on the uplink path in order to cancel or attenuate downlink leakage signals and residual noise present on the uplink path.
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