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公开(公告)号：US10404329B2
公开(公告)日：2019-09-03
申请号：US14590447
申请日：2015-01-06
Applicant: Dali Systems Co. Ltd.
Inventor： Qianqi Zhuang , Shawn Patrick Stapleton
Abstract: A system for transporting IP data in a Distributed Antenna System includes at least one Digital Access Units (DAU) having a plurality of optical input/output ports and at least one Ethernet port and a plurality of Digital Remote Units (DRUs) coupled to the at least one DAU. Each of the plurality of DRUs has a plurality of optical input/output ports and at least one Ethernet port. The at least one DAU includes a Framer/Deframer operable to separate cellular payload data from IP data and a network switch operable to buffer the cellular payload data and the IP data and to route the IP data received from the plurality of DRUs to the at least one Ethernet port of the DAU.
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公开(公告)号：US20190253085A1
公开(公告)日：2019-08-15
申请号：US16213103
申请日：2018-12-07
Applicant: Dali Systems Co. Ltd.
Inventor： Chengxun Wang , Shawn Patrick Stapleton
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.
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公开(公告)号：US10334567B2
公开(公告)日：2019-06-25
申请号：US15786396
申请日：2017-10-17
Applicant: Dali Systems Co. Ltd.
Inventor： Paul Lemson , Shawn Patrick Stapleton , Sasa Trajkovic
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.
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公开(公告)号：US20180329068A1
公开(公告)日：2018-11-15
申请号：US15917342
申请日：2018-03-09
Applicant: Dali Systems Co. Ltd.
Inventor： Daryl Meerkerk , Shawn Patrick Stapleton
Abstract: A system for indoor localization using satellite navigation signals in a Distributed Antenna System. The system includes a plurality of Off-Air Access Units (OAAUs), each operable to receive an individual satellite navigation signal from at least one of a plurality of satellite navigation systems (e.g., GPS, GLONASS, Galileo, QZSS, or BeiDou) and operable to route signals optically to one or more DAUs. The system further includes a plurality of remote DRUs located at a Remote location that are operable to receive signals from a plurality of local DAUs. Moreover, the system includes an algorithm to delay each individual satellite navigation signal for providing indoor localization at each of the plurality of DRUs.
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公开(公告)号：US10051350B2
公开(公告)日：2018-08-14
申请号：US15445467
申请日：2017-02-28
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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Patent Agency Ranking
156.发明申请公开(公告)号：US20180160356A1
公开(公告)日：2018-06-07
申请号：US15782309
申请日：2017-10-12
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.
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公开(公告)号：US20170353199A1
公开(公告)日：2017-12-07
申请号：US15492902
申请日：2017-04-20
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：US09723612B2
公开(公告)日：2017-08-01
申请号：US13753288
申请日：2013-01-29
Applicant: DALI SYSTEMS CO. LTD.
Inventor： Shawn Patrick Stapleton , Daryl Meerkeerk
CPC classification number: H04W72/0453 , H04B7/022 , H04B7/15514 , H04B7/15542 , H04W36/06 , H04W88/085
Abstract: A method for communicating with wireless user devices includes receiving a signal at a DAU, the signal residing within a first frequency band and processing the signal at the DAU. The method also includes transmitting the processed signal from the DAU and receiving the transmitted signal at a DRU. The method further includes converting the signal to a second frequency band different than the first frequency band.
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公开(公告)号：US09671496B2
公开(公告)日：2017-06-06
申请号：US14168328
申请日：2014-01-30
Applicant: DALI SYSTEMS CO. LTD.
Inventor： Shawn Patrick Stapleton
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.
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公开(公告)号：US20170104538A1
公开(公告)日：2017-04-13
申请号：US15383121
申请日：2016-12-19
Applicant: Dali Systems Co. Ltd.
Inventor： Shawn Patrick Stapleton , Sasa Trajkovic
IPC: H04B10/2575 , H04W16/26 , H04B10/27
CPC classification number: H04B10/25754 , H04B10/27 , H04W16/24 , H04W16/26 , H04W88/085
Abstract: A system for data transport in a Distributed Antenna System (DAS) includes a plurality of remote Digital Access Units (DAUs) located at a Remote location. The plurality of remote DAUs are coupled to each other and operable to transport digital signals between the plurality of remote DAUs. The system also includes a plurality of central hubs. Each of the plurality of central hubs is in communication with one of the remote DAUs using an electrical communications path. The system further includes a plurality of transmit/receive cells. Each of the plurality of transmit/receive cells includes a plurality of remote hubs. Each of the remote hubs in one of the plurality of transmit/receive cells is in communication with one of the plurality of central hubs using an optical communications path.
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