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    Software configurable distributed antenna system and method for bandwidth compression and transport of signals in noncontiguous frequency blocks
    21.
    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：US09236897B2

    公开(公告)日：2016-01-12

    申请号：US14225673

    申请日：2014-03-26

    Applicant: DALI SYSTEMS CO. LTD.

    Inventor： Shawn Patrick Stapleton ,  Wan-Jong Kim

    IPC: H04B7/204 ,  H04B1/50 ,  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.

    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。

    DAS integrated digital off-air repeater
    22.
    发明授权
    DAS integrated digital off-air repeater 有权
    DAS集成数字无线中继器

    公开(公告)号：US09112549B2

    公开(公告)日：2015-08-18

    申请号：US14044668

    申请日：2013-10-02

    Applicant: DALI SYSTEMS CO. LTD.

    Inventor： Shawn Patrick Stapleton

    IPC: H04B7/14 ,  H04B7/02 ,  H04B10/2575

    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。

    WIDE BANDWIDTH DIGITAL PREDISTORTION SYSTEM WITH REDUCED SAMPLING RATE
    24.
    发明申请
    WIDE BANDWIDTH DIGITAL PREDISTORTION SYSTEM WITH REDUCED SAMPLING RATE 有权
    宽带数字数字预测系统，具有降低的采样率

    公开(公告)号：US20150180519A1

    公开(公告)日：2015-06-25

    申请号：US14552231

    申请日：2014-11-24

    Applicant: Dali Systems Co. Ltd.

    Inventor： Wan-Jong Kim ,  Shawn Patrick Stapleton

    IPC: H04B1/04 ,  H04B1/00

    CPC classification number: H04B1/0475 ,  H03F1/02 ,  H03F1/3241 ,  H03F3/24 ,  H04B1/0017 ,  H04B2001/0425 ,  H04B2001/0433 ,  H04B2001/045

    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。

    DAISY-CHAINED RING OF REMOTE UNITS FOR A DISTRIBUTED ANTENNA SYSTEM
    27.
    发明申请
    DAISY-CHAINED RING OF REMOTE UNITS FOR A DISTRIBUTED ANTENNA SYSTEM 有权
    用于分布式天线系统的远程单元的DAISY-CHAINING环

    公开(公告)号：US20140313884A1

    公开(公告)日：2014-10-23

    申请号：US14260145

    申请日：2014-04-23

    Applicant: DALI SYSTEMS CO., LTD.

    Inventor： Shawn Patrick Stapleton ,  Paul Lemson ,  Bin Lin ,  Albert S. Lee

    IPC: H04W24/04 ,  H04W40/00

    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: The present disclosure is a novel utility of a software defined radio (SDR) based Distributed Antenna System (DAS) that is field reconfigurable and support multi-modulation schemes (modulation-independent), multi-carriers, multi-frequency bands and multi-channels. More specifically, the present invention relates to a DAS utilizing one or more Daisy-Chained Rings of Remote Units. The present invention enables a high degree of flexibility to manage, control, enhance, facilitate the usage and performance of a distributed wireless network such as Flexible Simulcast, automatic traffic load-balancing, network and radio resource optimization, network calibration, autonomous/assisted commissioning, carrier pooling, automatic frequency selection, frequency carrier placement, traffic monitoring, traffic tagging, pilot beacon, etc. As a result, a DAS in accordance with the present invention can increase the efficiency and traffic capacity of the operators' wireless network.

    Abstract translation: 本公开是基于软件定义无线电（SDR）的分布式天线系统（DAS）的新颖实用性，其是现场可重配置的并且支持多调制方案（与调制无关），多载波，多频带和多信道 。 更具体地，本发明涉及利用一个或多个远程单元的菊花链的DAS。 本发明能够灵活地管理，控制，增强，促进分布式无线网络的使用和性能，例如灵活的模拟广播，自动流量负载平衡，网络和无线电资源优化，网络校准，自主/辅助调试 载波池，自动频率选择，载频布置，流量监控，流量标签，导频信标等。因此，根据本发明的DAS可以提高运营商的无线网络的效率和流量。

    FEEDBACK BASED INDOOR LOCALIZATION USING DIGITAL OFF-AIR ACCESSUNITS
    28.
    发明申请
    FEEDBACK BASED INDOOR LOCALIZATION USING DIGITAL OFF-AIR ACCESSUNITS 有权
    基于反馈的室内定位使用数字空中访问

    公开(公告)号：US20140306841A1

    公开(公告)日：2014-10-16

    申请号：US14171600

    申请日：2014-02-03

    Applicant: Dali Systems Co. Ltd.

    Inventor： Shawn Patrick Stapleton

    IPC: G01S19/01

    CPC classification number: G01S19/11 ,  G01S19/01

    Abstract: A system for indoor localization using satellite navigation signals in a Distributed Antenna System includes a plurality of Off-Air Access Units (OAAUs). Each of the plurality of OAAUs is operable to receive an individual satellite navigation signal from at least one of a plurality of satellites and operable to route signals optically to one or more DAUs. The system also includes a plurality of remote DRUs located at a remote location. The plurality of remote DRUs are operable to receive signals from a plurality of local DAUs. The system further includes an algorithm to delay each individual satellite navigation signal for providing indoor localization at each of the plurality of DRUs and a GPS receiver at the remote location used in a feedback loop with the DRU to control the delays.

    Abstract translation: 在分布式天线系统中使用卫星导航信号的室内定位系统包括多个无线接入单元（OAAU）。 多个OAAU中的每一个可操作以从多个卫星中的至少一个接收单独的卫星导航信号，并可操作以将信号光学地路由到一个或多个DAU。 该系统还包括位于远程位置的多个远程DRU。 多个远程DRU可操作以从多个本地DAU接收信号。 该系统还包括延迟每个单独的卫星导航信号以在多个DRU的每一个处提供室内定位的算法，以及用于与DRU进行反馈回路的远程位置处的GPS接收机来控制延迟。

    TIME SYNCHRONIZED ROUTING IN A DISTRIBUTED ANTENNA SYSTEM
    29.
    发明申请
    TIME SYNCHRONIZED ROUTING IN A DISTRIBUTED ANTENNA SYSTEM 有权
    分布式天线系统中的时间同步路由

    公开(公告)号：US20140162713A1

    公开(公告)日：2014-06-12

    申请号：US13960346

    申请日：2013-08-06

    Applicant: DALI SYSTEMS CO. LTD.

    Inventor： Shawn Patrick Stapleton ,  Qianqi Zhang

    IPC: H04W56/00

    CPC classification number: H04W56/0005 ,  H04W40/02 ,  H04W40/06 ,  H04W56/003 ,  H04W56/0045 ,  H04W88/085 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/30 ,  Y02D70/322

    Abstract: A system for routing signals in a Distributed Antenna System includes a plurality of Digital Access Units (DAUs) and a plurality of Digital Remote Units (DRUs). The plurality of DAUs are coupled and operable to route signals between the plurality of DAUs. The plurality of DRUs are coupled to the plurality of DAUs and operable to transport signals between DRUs and DAUs. The system also includes a plurality of Base Transceiver Stations (BTS) and a plurality of Base Transceiver Station sector RF connections coupled to the plurality of DAUs and operable to route signals between the plurality of DAUs and the plurality of Base Transceiver Stations sector RF port connections. The system further includes one or more delay compensation merge units operable to delay signals transmitted from or received by each of the plurality of DRUs

    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接入单元（DAU）和多个数字远程单元（DRU）。 多个DAU被耦合并且可操作以在多个DAU之间路由信号。 多个DRU耦合到多个DAU并且可操作以在DRU和DAU之间传输信号。 该系统还包括耦合到多个DAU的多个基站收发台（BTS）和多个基站收发台部分RF连接，并且可操作以在多个DAU和多个基站收发台之间路由信号扇区RF端口连接 。 系统还包括一个或多个延迟补偿合并单元，其可操作以延迟从多个DRU中的每一个发送或接收的信号

    EVOLUTIONARY ALGORITHMS FOR GEOGRAPHIC LOAD BALANCING USING A DISTRIBUTED ANTENNA SYSTEM
    30.
    发明申请
    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演化算法

    公开(公告)号：US20140057627A1

    公开(公告)日：2014-02-27

    申请号：US13770113

    申请日：2013-02-19

    Applicant: DALI SYSTEMS CO. LTD.

    Inventor： Seyed Amin Hejazi ,  Shawn Patrick Stapleton

    IPC: H04W40/14 ,  H04W24/08

    CPC classification number: H04W36/22 ,  H04W24/08 ,  H04W28/08 ,  H04W36/30 ,  H04W40/14 ,  H04W88/085

    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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