公开(公告)号：US20170363743A1

公开(公告)日：2017-12-21

申请号：US15582776

申请日：2017-05-01

Applicant: Dali Systems Co. Ltd.

Inventor： Shawn Patrick Stapleton

IPC: G01S19/01 ,  G01S19/11

CPC classification number: G01S19/01 ,  G01S19/11

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 the one or more 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.

公开(公告)号：US09826508B2

公开(公告)日：2017-11-21

申请号：US14479875

申请日：2014-09-08

Applicant: DALI SYSTEMS CO. LTD.

Inventor： Paul Lemson ,  Shawn Patrick Stapleton ,  Sasa Trajkovic

IPC: H04W72/04 ,  H04B1/18 ,  H04B1/40

CPC classification number: H04W72/04 ,  H04B1/18 ,  H04B1/40

Abstract: A remote radio head unit (RRU) system for achieving high data rate communications in a Distributed Antenna System is disclosed. The Distributed Antenna System is configured as a Neutral Host enabling multiple operators to exist on one DAS system. The present disclosure enables a remote radio head unit to be field reconfigurable and support multi-modulation schemes (modulation-independent), multi-carriers, multi-frequency bands and multi-channels. As a result, the remote radio head system is particularly suitable for wireless transmission systems, such as base-stations, repeaters, and indoor signal coverage systems.

公开(公告)号：US09768739B2

公开(公告)日：2017-09-19

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

IPC: H04B1/04 ,  H03F1/32 ,  H03F3/24 ,  H03F3/19 ,  H03F3/20

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.

公开(公告)号：US20170230836A1

公开(公告)日：2017-08-10

申请号：US15383431

申请日：2016-12-19

Applicant: DALI SYSTEMS CO. LTD.

Inventor： Seyed Amin Hejazi ,  Shawn Patrick Stapleton

IPC: H04W16/10

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.

公开(公告)号：US09722939B2

公开(公告)日：2017-08-01

申请号：US14960177

申请日：2015-12-04

Applicant: DALI SYSTEMS CO. LTD.

Inventor： Shawn Patrick Stapleton ,  Wan-Jong Kim

IPC: H04B1/66 ,  H04L12/811 ,  H04W72/04 ,  H04B1/50 ,  H04B1/00 ,  H04B1/40

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.

公开(公告)号：US09420628B2

公开(公告)日：2016-08-16

申请号：US13671203

申请日：2012-11-07

Applicant: Dali Systems Co. Ltd.

Inventor： Gary Spedaliere ,  Albert S. Lee ,  Shawn Patrick Stapleton

IPC: H04B10/27 ,  H04W88/08 ,  H04J14/00 ,  H04W84/10 ,  H04W52/02

CPC classification number: H04B7/02 ,  H04B10/27 ,  H04J14/00 ,  H04W52/02 ,  H04W52/0206 ,  H04W84/10 ,  H04W88/08 ,  H04W88/085 ,  Y02D70/1262

Abstract: A virtualized DAS network includes one or more digital access units (DAUs) and one or more digital remote units (DRUs) coupled to the one or more DAUs. The virtualized DS network also includes a routing table associated with the one or more DAUs. A signal provided by the one or more DRUs includes one or more carriers and one or more pilot beacons.

Abstract translation: 虚拟化DAS网络包括耦合到一个或多个DAU的一个或多个数字访问单元（DAU）和一个或多个数字远程单元（DRU）。 虚拟化DS网络还包括与一个或多个DAU相关联的路由表。 由一个或多个DRU提供的信号包括一个或多个载波和一个或多个导频信标。

公开(公告)号：US20160014782A1

公开(公告)日：2016-01-14

申请号：US14800515

申请日：2015-07-15

Applicant: DALI SYSTEMS CO. LTD.

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

IPC: H04W72/04 ,  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. 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 。 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。

公开(公告)号：US20150382363A1

公开(公告)日：2015-12-31

申请号：US14754908

申请日：2015-06-30

Applicant: Dali Systems Co. Ltd.

Inventor： Chengxun Wang ,  Shawn Patrick Stapleton

IPC: H04W72/08 ,  H04W72/04

CPC classification number: H04B1/0057 ,  H03F1/0277 ,  H03F3/19 ,  H03F3/245 ,  H03F3/72 ,  H03F2200/111 ,  H03F2200/294 ,  H03F2200/321 ,  H03F2203/7209 ,  H04B1/0053 ,  H04B1/006 ,  H04B1/0067 ,  H04B1/10 ,  H04B1/123 ,  H04B1/40 ,  H04B1/525

Abstract: A remote radio head unit (RRU) system for multiple operating frequency bands, multi-channels, driven by a single or more wide band power amplifiers. More specifically, the present invention enables multiple-bands RRU to use fewer power amplifiers in order to reduce size and cost of the multi-band RRU. The present invention is based on the method of using duplexers and/or interference cancellation system technique to increase the isolation between the transmitter signal and receiver signal of the RRU.

Abstract translation: 用于多个工作频带的远程无线电头单元（RRU）系统，由多个单个或多个宽带功率放大器驱动的多通道。 更具体地，本发明使得多频带RRU能够使用更少的功率放大器，以便减小多频带RRU的尺寸和成本。 本发明基于使用双工器和/或干扰消除系统技术来增加RRU的发射机信号和接收机信号之间的隔离的方法。

公开(公告)号：US20150358054A1

公开(公告)日：2015-12-10

申请号：US14831626

申请日：2015-08-20

Applicant: Dali Systems Co. Ltd.

Inventor： Paul Lemson ,  Shawn Patrick Stapleton ,  Sasa Trajkovic

IPC: H04B7/02 ,  H04B10/2575

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.

公开(公告)号：US20150326957A1

公开(公告)日：2015-11-12

申请号：US14678779

申请日：2015-04-03

Applicant: Dali Systems Co. Ltd.

Inventor： Shawn Patrick Stapleton ,  Sasa Trajkovic

IPC: H04Q11/00 ,  H04J14/02 ,  H04B10/2575

CPC classification number: H04Q11/0067 ,  H04B10/25753 ,  H04B10/27 ,  H04J14/0286 ,  H04Q11/0005 ,  H04Q2011/0016 ,  H04W40/02 ,  H04W88/085 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/30

Abstract: A system for routing signals in a Distributed Antenna System includes a plurality of local Digital Access Units (DAUs) located at a Local location. Each of the plurality of local DAUs is coupled to each other and operable to route signals between the plurality of local DAUs. Each of the plurality of local DAUs includes one or more Base Transceiver Station (BTS) RF connections. Each of the plurality of BTS RF connections is operable to be coupled to one of one or more sectors of a BTS. The system also includes a plurality of remote DAUs located at a Remote location. The plurality of remote DAUs are coupled to each other and operable to transport signals between the plurality of remote DAUs.

Abstract translation: 用于在分布式天线系统中路由信号的系统包括位于本地位置的多个本地数字接入单元（DAU）。 多个本地DAU中的每一个彼此耦合并且可操作以在多个本地DAU之间路由信号。 多个本地DAU中的每一个包括一个或多个基站收发台（BTS）RF连接。 多个BTS RF连接中的每一个可操作以耦合到BTS的一个或多个扇区中的一个。 该系统还包括位于远程位置的多个远程DAU。 多个远程DAU彼此耦合并且可操作以在多个远程DAU之间传送信号。