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公开(公告)号：US20180212650A1
公开(公告)日：2018-07-26
申请号：US15812018
申请日：2017-11-14
Applicant: Dali Systems Co. Ltd.
Inventor： Qianqi Zhuang , Shawn Patrick Stapleton
IPC: H04B7/024
CPC classification number: H04B7/024
Abstract: A system for transporting data in a Distributed Antenna System (DAS) includes at least one Digital Access Unit (DAU) and a plurality of Digital Remote Units (DRUs) coupled to the at least one DAU. The plurality of DRUs are operable to transport signals between the plurality of DRUs and the at least one DAU. The at least one DAU includes: a data transport coder comprising: a framer, an encoder, a scrambler, and a serializer and a data transport decoder comprising: a deserializer, a decoder, a descrambler, a frame synchronizer, and a deframer.
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公开(公告)号：US09942771B2
公开(公告)日：2018-04-10
申请号：US15383431
申请日：2016-12-19
Applicant: DALI SYSTEMS CO. LTD.
Inventor： Seyed Amin Hejazi , Shawn Patrick Stapleton
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.
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公开(公告)号：US09854553B2
公开(公告)日：2017-12-26
申请号：US15090402
申请日：2016-04-04
Applicant: Dali Systems Co. Ltd.
Inventor： Wan-Jong Kim , Shawn Patrick Stapleton
CPC classification number: H04W56/0095 , H04B7/04 , H04B17/318 , H04L5/14 , H04L25/03 , H04W56/00
Abstract: A method of detecting a synchronization switching pulse using a power detector in a time division duplexing (TDD) system includes receiving an input signal, detecting a power level associated with the input signal using a digital power meter, and determining a configuration associated with the input signal. The method also includes determining that a pulse width associated with the input signal is greater than a threshold, determining an offset associated with a special subframe configuration, and generating an estimated sync pulse. The method further includes forming a regenerated sync pulse, determining an error between the estimated sync pulse and the regenerated sync pulse, determining that the error is less than a threshold, and providing a lock detect.
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公开(公告)号：US09847816B2
公开(公告)日：2017-12-19
申请号：US14574071
申请日：2014-12-17
Applicant: Dali Systems Co. Ltd.
Inventor： Qianqi Zhuang , Shawn Patrick Stapleton
CPC classification number: H04B7/024
Abstract: A system for transporting data in a Distributed Antenna System (DAS) includes at least one Digital Access Unit (DAU) and a plurality of Digital Remote Units (DRUs) coupled to the at least one DAU. The plurality of DRUs are operable to transport signals between the plurality of DRUs and the at least one DAU. The at least one DAU includes: a data transport coder comprising: a framer, an encoder, a scrambler, and a serializer and a data transport decoder comprising: a deserializer, a decoder, a descrambler, a frame synchronizer, and a deframer.
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公开(公告)号：US20170303019A1
公开(公告)日：2017-10-19
申请号：US15445467
申请日：2017-02-28
Applicant: Dali Systems Co. Ltd.
Inventor： Shawn Patrick Stapleton , Sasa Trajkovic
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 (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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Patent Agency Ranking
116.发明申请公开(公告)号：US20170250927A1
公开(公告)日：2017-08-31
申请号：US15358060
申请日：2016-11-21
Applicant: Dali Systems Co. Ltd.
Inventor： Shawn Patrick Stapleton , Sasa Trajkovic
IPC: H04L12/947 , H04B10/2575 , H04L25/02
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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公开(公告)号：US09673848B2
公开(公告)日：2017-06-06
申请号：US14987093
申请日：2016-01-04
Applicant: DALI SYSTEMS CO. LTD.
Inventor： Wan-Jong Kim , Shawn Patrick Stapleton
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.
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公开(公告)号：US20170146662A1
公开(公告)日：2017-05-25
申请号：US15279136
申请日：2016-09-28
Applicant: Dali Systems Co. Ltd.
Inventor： Shawn Patrick Stapleton
IPC: 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 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.
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公开(公告)号：US20170118734A1
公开(公告)日：2017-04-27
申请号：US15251293
申请日：2016-08-30
Applicant: Dali Systems Co. Ltd.
Inventor： Shawn Patrick Stapleton , Qianqi Zhuang
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
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公开(公告)号：US20170055198A1
公开(公告)日：2017-02-23
申请号：US15223819
申请日：2016-07-29
Applicant: Dali Systems Co. Ltd.
Inventor： Shawn Patrick Stapleton , Paul Lemson , Bin Lin , Albert S. Lee
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。
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