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公开(公告)号：US20160007264A1
公开(公告)日：2016-01-07
申请号：US14743789
申请日：2015-06-18
Applicant: Dali Systems Co. Ltd.
Inventor： Shawn Patrick Stapleton
CPC classification number: H04W40/22 , H04B7/026 , H04B10/25753 , H04W40/20 , H04W88/085
Abstract: Embodiments may allow remote base transceiver stations (BTSs) physically located away from a local source of users to be able to provide local service as if the remote BTSs were at or near the local source of users. Some embodiments may include a plurality of BTSs, each having one or more sectors, and one or more digital access units (DAUs). Embodiments may also include a plurality of repeater digital units (RDUs), where each RDU may be configured to communicate to at least one of the plurality of BTSs and may be operable to route signals optically to the one or more DAUs. Embodiments may also include a plurality of digital remote units (DRUs) located at a location remote to the one or more DAUs, wherein the plurality of remote DRUs may be operable to transport signals to the one or more DAUs.
Abstract translation: 实施例可以允许物理上远离本地用户源的远程基站收发台（BTS）能够提供本地服务，就好像远程BTS处于或接近本地用户源。 一些实施例可以包括多个BTS，每个BTS具有一个或多个扇区，以及一个或多个数字访问单元（DAU）。 实施例还可以包括多个中继器数字单元（RDU），其中每个RDU可以被配置为与多个BTS中的至少一个通信，并且可以用于将信号光学地路由到一个或多个DAU。 实施例还可以包括位于远离一个或多个DAU的位置处的多个数字远程单元（DRU），其中多个远程DRU可操作以将信号传送到一个或多个DAU。
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132.发明授权System and method for increasing bandwidth for digital predistortion in multi-channel wideband communication systems 有权用于增加多通道宽带通信系统中数字预失真的带宽的系统和方法公开(公告)号：US09197259B2
公开(公告)日：2015-11-24
申请号：US14480267
申请日：2014-09-08
Applicant: Dali Systems Co. Ltd.
Inventor： Wan-Jong Kim , Shawn Patrick Stapleton
CPC classification number: H04B1/0475 , H03F1/3241 , H03F1/3247 , H04B1/0017 , H04B2001/0425 , H04L27/368
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.
Abstract translation: 提供数字预失真线性化方法来增加在宽带通信系统中使用的RF功率放大器的瞬时或者操作带宽。 本发明的实施例提供了一种使用集成到用于多信道宽带无线发射机的现有数字平台中的反馈滤波器来增加DPD线性化带宽的方法。 本发明的一个实施例利用DPD反馈信号与DPD反馈路径中的低功率带通滤波器相结合。
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133.发明授权Evolutionary algorithms for geographic load balancing using a distributed antenna system 有权使用分布式天线系统进行地理负载平衡的进化算法公开(公告)号：US09148839B2
公开(公告)日：2015-09-29
申请号：US13770113
申请日：2013-02-19
Applicant: DALI SYSTEMS CO. LTD.
Inventor： Seyed Amin Hejazi , Shawn Patrick Stapleton
Abstract: Methods and apparatuses are presented for balancing non-uniformly distributed network traffic in a wireless communications system having a plurality of digital remote units (DRUs). In some embodiments, a method comprises partitioning the plurality of DRUs into a plurality of DRU sectors, and dynamically repartitioning the plurality of DRU sectors depending on traffic conditions in at least one of the DRU sectors, such that the repartitioning satisfies at least one of a soft capacity constraint or a hard capacity constraint. The dynamic repartitioning may be based on at least one optimization algorithm.
Abstract translation: 提出了用于平衡具有多个数字远程单元（DRU）的无线通信系统中的非均匀分布式网络业务的方法和装置。 在一些实施例中，一种方法包括将多个DRU划分成多个DRU扇区，并且根据至少一个DRU扇区中的业务状况来动态地重新分区多个DRU扇区，使得重新分区满足以下中的至少一个： 软容量约束或硬容量约束。 动态重新分配可以基于至少一个优化算法。
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134.发明授权Software configurable distributed antenna system and method for reducing uplink noise 有权软件可配置的分布式天线系统和减少上行链路噪声的方法公开(公告)号：US09148203B2
公开(公告)日：2015-09-29
申请号：US14333277
申请日：2014-07-16
Applicant: Dali Systems Co. Ltd.
Inventor： Paul Lemson , Shawn Patrick Stapleton , Sasa Trajkovic
CPC classification number: H04B7/04 , H04B7/022 , H04B10/25753 , H04W88/085
Abstract: A distributed antenna system includes a master unit including a downlink RF input operable to receive an RF input signal from a downlink port of a base station, a first optical port, and a second optical port. The distributed antenna system also includes a first remote unit coupled to the first optical port. The first remote unit comprises a downlink antenna port and a first uplink antenna port and a second remote unit coupled to the second optical port of the master unit. The second remote unit comprises a downlink antenna port and a second uplink antenna port. The master unit is operable to transmit a first RF signal associated with the first RF uplink signal to a first uplink port of the base station and transmit a second RF signal associated with the second RF uplink signal to a second uplink port of the base station.
Abstract translation: 分布式天线系统包括主单元，其包括可操作以从基站的下行链路端口，第一光端口和第二光端口接收RF输入信号的下行链路RF输入。 分布式天线系统还包括耦合到第一光端口的第一远程单元。 第一远程单元包括下行链路天线端口和第一上行链路天线端口以及耦合到主单元的第二光端口的第二远程单元。 第二远程单元包括下行链路天线端口和第二上行链路天线端口。 主单元可操作地将与第一RF上行链路信号相关联的第一RF信号发送到基站的第一上行链路端口，并将与第二RF上行链路信号相关联的第二RF信号发送到基站的第二上行链路端口。
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公开(公告)号：US20150256358A1
公开(公告)日：2015-09-10
申请号：US14639418
申请日：2015-03-05
Applicant: Dali Systems Co. Ltd.
Inventor： Shawn Patrick Stapleton , Sasa Trajkovic , Wolfgang Weber
IPC: H04L25/02 , H04W52/24 , H04B10/2575 , H04W72/04
Abstract: A system for routing signals in a Distributed Antenna System includes a plurality of Digital Multiplexer Units (DMUs). The plurality of DMUs are coupled and operable to route signals between the plurality of DMUs. Each of the plurality of DMUs is operable to receive a digital signal from a base band unit (BBU). The system also includes a plurality of Digital Remote Units (DRUs) coupled to at least one of the plurality of DMUs and operable to transport signals between DRUs and the at least one of the plurality of DMUs.
Abstract translation: 用于在分布式天线系统中路由信号的系统包括多个数字多路复用器单元（DMU）。 多个DMU被耦合并且可操作以在多个DMU之间路由信号。 多个DMU中的每一个可操作以从基带单元（BBU）接收数字信号。 该系统还包括耦合到多个DMU中的至少一个DMU的多个数字远程单元（DRU），并且可操作以在DRU和多个DMU中的至少一个之间传送信号。
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Patent Agency Ranking
公开(公告)号：US08903337B2
公开(公告)日：2014-12-02
申请号：US13894987
申请日：2013-05-15
Inventor： Wan-Jong Kim , Kyoung-Joon Cho , Shawn Patrick Stapleton
CPC classification number: H04B1/0475 , H03F1/3247 , H03F2200/111 , H03F2200/451 , H04B1/62 , H04L27/2626 , H04L27/368
Abstract: A high performance and cost effective method of RF-digital hybrid mode power amplifier systems with high linearity and high efficiency for multi-frequency band wideband communication system applications is disclosed. The present disclosure enables a power amplifier system to be field reconfigurable and support multiple operating frequency bands on the same PA system over a very wide bandwidth. In addition, the present invention supports multi-modulation schemes (modulation agnostic), multi-carriers and multi-channels.
Abstract translation: 公开了一种用于多频带宽带通信系统应用的具有高线性度和高效率的RF数字混合模式功率放大器系统的高性能和成本有效的方法。 本公开使得功率放大器系统能够在现场可重新配置并且在非常宽的带宽上支持相同PA系统上的多个工作频带。 此外，本发明支持多调制方案（调制不可知），多载波和多信道。
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公开(公告)号：US20140327481A1
公开(公告)日：2014-11-06
申请号：US14271881
申请日：2014-05-07
Applicant: DALI SYSTEMS CO., LTD.
Inventor： Wan Jong Kim , Kyoung Joon Cho , Shawn Patrick Stapleton , Jong Heon Kim , Dali Yang
CPC classification number: H03F1/3247 , H03F1/3258 , H03F3/19 , H03F3/20 , H03F3/24 , H03F2200/129 , H03F2200/451 , H03F2201/3224 , H03F2201/3227 , H03F2201/3233
Abstract: A RF-digital hybrid mode power amplifier system for achieving high efficiency and high linearity in wideband communication systems is disclosed. The present invention is based on the method of adaptive digital predistortion to linearize a power amplifier in the RF domain. The power amplifier characteristics such as variation of linearity and asymmetric distortion of the amplifier output signal are monitored by the narrowband feedback path and controlled by the adaptation algorithm in a digital module. Therefore, the present invention could compensate the nonlinearities as well as memory effects of the power amplifier systems and also improve performances, 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 and multi-channels. As a result, the digital hybrid mode power amplifier system is particularly suitable for wireless transmission systems, such as base-stations, repeaters, and indoor signal coverage systems, where baseband I-Q signal information is not readily available.
Abstract translation: 公开了一种用于在宽带通信系统中实现高效率和高线性度的RF数字混合模式功率放大器系统。 本发明基于对RF域中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不对称失真的功率放大器特性由窄带反馈路径监测并由数字模块中的自适应算法控制。 因此，本发明可以补偿功率放大器系统的非线性和存储器效应，并且在功率附加效率，相邻信道泄漏比和峰均功率比方面也提高了性能。 本公开使得功率放大器系统能够是现场可重新配置的并且支持多调制方案（调制不可知），多载波和多信道。 结果，数字混合模式功率放大器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，其中基带I-Q信号信息不容易获得。
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公开(公告)号：US20140314061A1
公开(公告)日：2014-10-23
申请号：US14189044
申请日：2014-02-25
Applicant: DALI SYSTEMS CO. LTD.
Inventor： Sasa Trajkovic , Shawn Patrick Stapleton , Qianqi Zhuang
IPC: H04W16/18
CPC classification number: H04W16/26 , H04B10/25754 , H04W84/12 , H04W88/085
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.
Abstract translation: 用于在分布式天线系统中联网Wi-Fi接入点的系统包括多个数字接入单元（DAU）。 多个DAU被耦合并且可操作以在多个DAU之间路由信号。 该系统还包括耦合到多个DAU的多个数字远程单元（DRU），并且可操作以在DRU和DAU之间传输信号以及多个DAU端口和DRU端口。 该系统还包括一个成帧器/去帧机，其中蜂窝有效载荷数据与IP数据和网络交换机分离。 来自多个DAU和DRU端口的IP数据被缓冲并路由到多个DAU和DRU端口。 此外，该系统包括通过网状网络耦合到连接到多个DRU的Wi-Fi接入点的多个Wi-Fi接入点。
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139.发明授权Method and system for baseband predistortion linearization in multi-channel wideband communications systems 有权多通道宽带通信系统中基带预失真线性化的方法和系统公开(公告)号：US08855234B2
公开(公告)日：2014-10-07
申请号：US13887133
申请日：2013-05-03
Applicant: Dali Systems Co. Ltd.
Inventor： Wan Jong Kim , Kyoung Joon Cho , Jong Heon Kim , Shawn Patrick Stapleton
CPC classification number: H04W40/02 , H03F1/3247 , H03F3/24 , H03F2200/336 , H03F2200/57 , H03F2201/3224 , H03F2201/3233 , H04B1/0475 , H04B7/022 , H04B2001/0425 , H04L25/03343 , H04L27/2618 , H04L27/362 , H04L2025/03414 , H04W24/02 , H04W24/04 , H04W40/00 , H04W72/04 , H04W72/0453
Abstract: An efficient baseband predistortion linearization method for reducing the spectral regrowth and compensating memory effects in wideband communication systems using effective multiplexing modulation technique such as wideband code division multiple access and orthogonal frequency division multiplexing is disclosed. The present invention is based on the method of piecewise pre-equalized lookup table based predistortion, which is a cascade of a lookup table predistortion and piecewise pre-equalizers.
Abstract translation: 公开了一种使用诸如宽带码分多址和正交频分复用之类的有效复用调制技术在宽带通信系统中减少频谱再生长和补偿存储器效应的有效的基带预失真线性化方法。 本发明基于基于分段预均衡查找表的预失真的方法，其是查找表预失真和分段预均衡器的级联。
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140.发明申请公开(公告)号：US20140233468A1
公开(公告)日：2014-08-21
申请号：US13894309
申请日：2013-05-14
Applicant: DALI SYSTEMS CO. LTD.
Inventor： Seyed Amin Hejazi , Shawn Patrick Stapleton
IPC: H04W72/04
CPC classification number: H04W16/10 , H04J11/0023 , H04L1/00 , H04L5/0023 , H04L2001/0093 , H04W28/06 , H04W52/04 , H04W72/04 , H04W72/0453 , H04W88/085
Abstract: A method for routing and switching operator RF signals includes providing one or more Digital Remote Units (DRUs) and providing at least one Digital Access Unit (DAU) configured to communicate with at least one of the one or more DRUs. A first DRU is operable to communicate using a first set of frequencies characterized by a first frequency band over a first geographic footprint and a second set of frequencies characterized by a second frequency band different from the first frequency band over a second geographic footprint including and surrounding the first geographic footprint. A second DRU is operable to communicate using the first set of frequencies over a third geographical footprint and a third set of frequencies characterized by a third frequency band different from the first frequency band and the second frequency band over a fourth geographic footprint including and surrounding the third geographic footprint.
Abstract translation: 用于路由和切换操作者RF信号的方法包括提供一个或多个数字远程单元（DRU）并提供被配置为与一个或多个DRU中的至少一个通信的至少一个数字接入单元（DAU）。 第一DRU可操作以使用第一组频率进行通信，所述第一组频率的特征在于第一地理覆盖区上的第一频带，以及第二组频率，其特征在于在第二地理覆盖区域上包括与周围的第二频带不同于第一频带 第一个地理足迹。 第二DRU可操作以在第三地理位置上使用第一组频率进行通信，并且第三组频率的特征在于第四频域和第二频带不同于第四地理空间的第三频带，其包括并围绕 第三地理足迹。
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