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141.发明授权Software configurable distributed antenna system and method for bandwidth compression and transport of signals in noncontiguous frequency blocks 有权软件可配置的分布式天线系统和方法，用于在非连续频率块中进行信号的带宽压缩和传输公开(公告)号：US08724664B2
公开(公告)日：2014-05-13
申请号：US13686036
申请日：2012-11-27
Applicant: Dali Systems Co. Ltd.
Inventor： Shawn Patrick Stapleton , Wan-Jong Kim
IPC: H04J3/04
CPC classification number: H04L47/38 , H04B1/0007 , H04B1/40 , H04B1/50 , H04W72/04
Abstract: A method for transporting communications signals includes receiving an analog IF signal at a first unit. The analog IF signal includes a first carrier having a first frequency and a first bandwidth and a second carrier having a second frequency different from the first frequency and a second bandwidth. The analog IF signal is converted to a digitally sampled IF signal having the first carrier located in a first Nyquist zone, the second carrier located in a second Nyquist zone, an image of the first carrier located in a third Nyquist zone, and an image of the second carrier located in the third Nyquist zone. The image of the first carrier and the image of the second carrier is transmitted from the first unit to a second unit, where the image of the first carrier and the image of the second carrier is then converted to the analog IF signal.
Abstract translation: 用于传送通信信号的方法包括在第一单元处接收模拟IF信号。 模拟IF信号包括具有第一频率和第一带宽的第一载波和具有不同于第一频率和第二带宽的第二频率的第二载波。 模拟IF信号被转换成具有第一载波位于第一奈奎斯特区的第二载波的数字采样IF信号，位于第二奈奎斯特区的第二载波，位于第三奈奎斯特区的第一载波的图像， 位于第三奈奎斯特区的第二载体。 第一载波的图像和第二载波的图像从第一单元发送到第二单元，其中第一载波的图像和第二载波的图像然后被转换为模拟IF信号。
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142.发明申请HIGH EFFICIENCY, REMOTELY RECONFIGURABLE REMOTE RADIO HEAD UNIT SYSTEM AND METHOD FOR WIRELESS COMMUNICATIONS 有权高效，远程可重新配置的远程无线电头单元系统和无线通信方法公开(公告)号：US20140079153A1
公开(公告)日：2014-03-20
申请号：US14020425
申请日：2013-09-06
Applicant: DALI SYSTEMS CO. LTD.
Inventor： Wan-Jong Kim , Kyoung-Joon Cho , Shawn Patrick Stapleton , Ying Xiao
IPC: H04B1/04
CPC classification number: H04B1/0475 , H03F1/3247 , H03F3/24 , H03F3/68 , H03F2201/3224 , H04B1/0064 , H04W24/02 , H04W84/047 , H04W88/08 , H04W88/085 , Y02D70/00 , Y02D70/122 , Y02D70/1242 , Y02D70/1262 , Y02D70/142 , Y02D70/146 , Y02D70/40
Abstract: A remote radio head unit (RRU) system is disclosed. The present invention is based on the method of adaptive digital predistortion to linearize a power amplifier inside the RRU. The power amplifier characteristics such as variation of linearity and asymmetric distortion of the amplifier output signal are monitored by a wideband feedback path and controlled by the adaptation algorithm in a digital module. Therefore, embodiments of the present invention can compensate for the nonlinearities as well as memory effects of the power amplifier systems and also improve performance, in terms of power added efficiency, adjacent channel leakage ratio and peak-to-average power ratio. The present disclosure enables a power amplifier system to be field reconfigurable and support multi-modulation schemes (modulation agnostic), multi-carriers, multi-frequency bands and multi-channels. Consequentially, the remote radio head system is particularly suitable for wireless transmission systems, such as base-stations, repeaters, and indoor signal coverage systems.
Abstract translation: 公开了一种远程无线电头单元（RRU）系统。 本发明基于对RRU内的功率放大器进行线性化的自适应数字预失真的方法。 诸如放大器输出信号的线性度和非对称失真的功率放大器特性由宽带反馈路径监测并由数字模块中的自适应算法控制。 因此，本发明的实施例可以补偿功率放大器系统的非线性以及存储器效应，并且在功率附加效率，相邻信道泄漏比和峰值与平均功率比方面也提高性能。 本公开使得功率放大器系统能够是现场可重构的并且支持多调制方案（不可调制调制），多载波，多频带和多信道。 因此，远程无线电头系统特别适用于诸如基站，中继器和室内信号覆盖系统之类的无线传输系统。
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公开(公告)号：US20140010168A1
公开(公告)日：2014-01-09
申请号：US13686036
申请日：2012-11-27
Applicant: DALI SYSTEMS CO. LTD.
Inventor： Shawn Patrick Stapleton , Wan-Jong Kim
IPC: H04W72/04
CPC classification number: H04L47/38 , H04B1/0007 , H04B1/40 , H04B1/50 , H04W72/04
Abstract: A method for transporting communications signals includes receiving an analog IF signal at a first unit. The analog IF signal includes a first carrier having a first frequency and a first bandwidth and a second carrier having a second frequency different from the first frequency and a second bandwidth. The analog IF signal is converted to a digitally sampled IF signal having the first carrier located in a first Nyquist zone, the second carrier located in a second Nyquist zone, an image of the first carrier located in a third Nyquist zone, and an image of the second carrier located in the third Nyquist zone. The image of the first carrier and the image of the second carrier is transmitted from the first unit to a second unit, where the image of the first carrier and the image of the second carrier is then converted to the analog IF signal.
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公开(公告)号：US11564110B2
公开(公告)日：2023-01-24
申请号：US13670162
申请日：2012-11-06
Applicant: DALI SYSTEMS CO. LTD.
Inventor： Shawn Patrick Stapleton , Daryl Meerkerk
Abstract: In some embodiments of the invention, a system for managing resource use in a Distributed Antenna System is provided. The system may include: a plurality of Digital Remote Units (DRUs) configured to send and receive wireless radio signals; a plurality of sectors, each configured to send and receive wireless radio signals; and a plurality of inter-connected Digital Access Units (DAUs), each configured to communicate with at least one of the DRUs via optical signals, and each being coupled to at least one of the sectors.
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145.发明授权公开(公告)号：US11563492B2
公开(公告)日：2023-01-24
申请号：US16734833
申请日：2020-01-06
Applicant: DALI SYSTEMS CO. LTD.
Inventor： Shawn Patrick Stapleton , Sasa Trajkovic
IPC: H04B10/2575 , H04L25/02 , H04B7/022
Abstract: A system for routing signals in a Distributed Antenna System (DAS) includes one or more Base Band Units (BBUs). Each of the one or more BBUs has one or more digital outputs. The system also includes a plurality of Digital Multiplexer Units (DMUs) coupled to each other and operable to route signals between the plurality of DMUs. Each of the plurality of DMUs is operable to receive one or more digital inputs from the one or more BBUs. The system further includes a plurality of Digital Remote Units (DRUs) coupled to the plurality of DMUs and operable to transport signals between the plurality of DRUs and one or more of the plurality of DMUs.
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Patent Agency Ranking
公开(公告)号：US11026077B2
公开(公告)日：2021-06-01
申请号：US15203015
申请日：2016-07-06
Applicant: Dali Systems Co. Ltd.
Inventor： Shawn Patrick Stapleton
Abstract: The present disclosure generally relates to wireless communication systems employing Distributed Antenna Systems (DAS) as part of a distributed wireless network. More specifically, the present disclosure relates to a DAS network that utilizes traffic monitoring of mobile devices of a distributed wireless network. Traffic monitoring may be used to monitor the DAS network performance and generate analytics of individual mobile devices.
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公开(公告)号：US10727879B2
公开(公告)日：2020-07-28
申请号：US16240433
申请日：2019-01-04
Applicant: DALI SYSTEMS CO. LTD.
Inventor： Wan-Jong Kim , Shawn Patrick Stapleton
Abstract: A digital predistortion linearization method is provided for increasing the instantaneous or operational bandwidth for RF power amplifiers employed in wideband communication systems. Embodiments of the present invention provide a method of increasing DPD linearization bandwidth using a feedback filter integrated into existing digital platforms for multi-channel wideband wireless transmitters. An embodiment of the present invention utilizes a DPD feedback signal in conjunction with a low power band-pass filter in the DPD feedback path.
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公开(公告)号：US10721548B2
公开(公告)日：2020-07-21
申请号：US16039182
申请日：2018-07-18
Applicant: Dali Systems Co. Ltd.
Inventor： Shawn Patrick Stapleton , Sasa Trajkovic
Abstract: A system for routing signals in a Distributed Antenna System (DAS) includes one or more local Digital Access Units (DAUs) located at a local location and one or more remote DAUs located at one or more remote locations. Each of the one or more local DAUs includes an optical port coupled to an upstream unit. The upstream unit includes at least one of a repeater, a baseband unit, a Base Transceiver Station (BTS), or a DAU. The one or more remote DAUs are coupled to the one or more local DAUs via one or more optical cables. A distance between the local location and each of the one or more remote locations is greater than two kilometers.
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公开(公告)号：US10681563B2
公开(公告)日：2020-06-09
申请号：US15907153
申请日：2018-02-27
Applicant: DALI SYSTEMS CO. LTD.
Inventor： Sasa Trajkovic , Shawn Patrick Stapleton , Qianqi Zhuang
IPC: H04W16/26 , H04B10/2575 , H04W84/12 , H04W88/08
Abstract: A system for networking Wi-Fi Access Points in a Distributed Antenna System includes a plurality of Digital Access Units (DAUs). The plurality of DAUs are coupled and operable to route signals between the plurality of DAUs. The system also includes a plurality of Digital Remote Units (DRUs) coupled to the plurality of DAUs and operable to transport signals between DRUs and DAUs and a plurality of DAU ports and DRU ports. The system further includes a Framer/Deframer, wherein the cellular payload data is separated from the IP data and a network switch. The IP data from a plurality of DAU and DRU ports are buffered and routed to a plurality of DAU and DRU ports. Furthermore, the system includes a plurality of Wi-Fi access points coupled via a mesh network to Wi-Fi access points connected to a plurality of DRUs.
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公开(公告)号：US20200154288A1
公开(公告)日：2020-05-14
申请号：US16661368
申请日：2019-10-23
Applicant: Dali Systems Co. Ltd.
Inventor： Shawn Patrick Stapleton , Seyed Amin Hejazi
Abstract: A system for dynamically routing signals in a Distributed Antenna System includes a plurality of Digital Access Units (DAUs). The plurality of DAUs are coupled and operable to route signals between the plurality of DAUs. The system also includes a plurality of Digital Remote Units (DRUs) coupled to the plurality of DAUs and operable to transport signals between DRUs and DAUs and a plurality of Base Transceiver Stations (BTS). The system further includes a plurality of traffic monitoring modules and a network optimization goal and optimization algorithm.
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