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公开(公告)号：US20190036606A1
公开(公告)日：2019-01-31
申请号：US16054678
申请日：2018-08-03
Applicant: Dali Systems Co. Ltd.
Inventor： Shawn Patrick Stapleton , Sasa Trajkovic
IPC: H04B10/2575 , H04W88/08 , H04W16/26 , H04B10/27 , H04W16/24
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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公开(公告)号：US20180332477A1
公开(公告)日：2018-11-15
申请号：US15912859
申请日：2018-03-06
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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43.发明申请公开(公告)号：US20180323813A1
公开(公告)日：2018-11-08
申请号：US15910648
申请日：2018-03-02
Applicant: Dali Systems Co. Ltd.
Inventor： Wan-Jong Kim , Kyoung-Joon Cho , Shawn Patrick Stapleton , Ying Xiao
CPC classification number: H04B1/0475 , H03F1/3247 , H03F3/24 , H03F3/68 , H03F2201/3224 , H04B1/0064 , H04W24/02 , H04W84/047 , H04W88/08 , H04W88/085 , Y02D70/00 , Y02D70/122 , Y02D70/1242 , Y02D70/1262 , Y02D70/142 , Y02D70/146 , Y02D70/40
Abstract: A remote radio head unit (RRU) system is disclosed. The present invention is based on the method of adaptive digital predistortion to linearize a power amplifier inside the RRU. The power amplifier characteristics such as variation of linearity and asymmetric distortion of the amplifier output signal are monitored by a wideband feedback path and controlled by the adaptation algorithm in a digital module. Therefore, embodiments of the present invention can compensate for the nonlinearities as well as memory effects of the power amplifier systems and also improve performance, 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, multi-frequency bands and multi-channels. Consequentially, 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：US10063319B2
公开(公告)日：2018-08-28
申请号：US15383121
申请日：2016-12-19
Applicant: Dali Systems Co. Ltd.
Inventor： Shawn Patrick Stapleton , Sasa Trajkovic
IPC: H04J14/00 , H04B10/2575 , H04B10/27 , H04W16/26
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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公开(公告)号：US09955361B2
公开(公告)日：2018-04-24
申请号：US14189044
申请日：2014-02-25
Applicant: DALI SYSTEMS CO. LTD.
Inventor： Sasa Trajkovic , Shawn Patrick Stapleton , Qianqi Zhuang
IPC: H04W16/26 , H04B10/2575 , H04W84/12 , H04W88/08
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.
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Patent Agency Ranking
公开(公告)号：US20180063012A1
公开(公告)日：2018-03-01
申请号：US15634121
申请日：2017-06-27
Applicant: DALI SYSTEMS CO. LTD.
Inventor： Shawn Patrick Stapleton , Wan-Jong Kim
IPC: H04L12/811 , H04W72/04 , H04B1/00 , H04B1/50 , 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.
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公开(公告)号：US09851445B2
公开(公告)日：2017-12-26
申请号：US14257209
申请日：2014-04-21
Applicant: DALI SYSTEMS CO. LTD.
Inventor： Daryl Meerkerk , Shawn Patrick Stapleton
Abstract: A real-time locating system (RTLS) for localization using satellite navigation signals in a Distributed Antenna System includes Off-Air Access Units (OAAUs), each being operable to receive an individual satellite navigation signal from a satellite and to route signals optically to a digital access unit (DAU). Remote digital remote units (DRUs) are located at Remote locations and are operable to receive signals the DAUs. Each individual satellite navigation signal can be appropriately delayed (in a manner that accounts for a DRU's location). For each antenna, a separation distance between a mobile station and a DRU can be estimated based on a signal receipt time at the station. In combination, these distances can be used to estimate the mobile station's precise indoor position.
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公开(公告)号：US09814053B2
公开(公告)日：2017-11-07
申请号：US14754908
申请日：2015-06-30
Applicant: Dali Systems Co. Ltd.
Inventor： Chengxun Wang , Shawn Patrick Stapleton
IPC: H04W4/00 , H04W72/08 , H04W24/02 , H04W72/04 , H03F1/02 , H03F3/19 , H03F3/24 , H03F3/72 , H04B1/12 , H04B1/525
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：US09622148B2
公开(公告)日：2017-04-11
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.
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公开(公告)号：US20170013585A1
公开(公告)日：2017-01-12
申请号：US15203015
申请日：2016-07-06
Applicant: Dali Systems Co. Ltd.
Inventor： Shawn Patrick Stapleton
CPC classification number: H04W4/90 , H04L12/42 , H04L12/44 , H04W24/08 , H04W88/085
Abstract: The present disclosure generally relates to wireless communication systems employing Distributed Antenna Systems (DAS) as part of a distributed wireless network. More specifically, the present disclosure relates to a DAS network that utilizes traffic monitoring of mobile devices of a distributed wireless network. Traffic monitoring may be used to monitor the DAS network performance and generate analytics of individual mobile devices.
Abstract translation: 本公开通常涉及使用分布式天线系统（DAS）作为分布式无线网络的一部分的无线通信系统。 更具体地，本公开涉及利用分布式无线网络的移动设备的业务监控的DAS网络。 流量监控可用于监视DAS网络性能并生成各个移动设备的分析。
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