公开(公告)号：US20180263035A1

公开(公告)日：2018-09-13

申请号：US15975153

申请日：2018-05-09

申请人： Corning Optical Communications Wireless Ltd

发明人： Dror Ben-Shlomo ,  Isaac Shapira

IPC分类号： H04W72/04 ,  H04B1/48

CPC分类号： H04W72/0446 ,  H04B1/48 ,  H04B17/318 ,  H04L5/14 ,  H04W72/0406

摘要： Time-division duplexing (TDD) in distributed communications systems, including distributed antenna systems (DASs) is disclosed. In one embodiment, a control circuit is provided and configured to control the TDD transmit mode of a DAS to control the allocation of time slots for uplink and downlink communications signal distribution in respective uplink path(s) and downlink path(s). The control circuit includes separate power detectors configured to detect either a transmit power level in a downlink path or a receive power level in an uplink path. If the transmit power detected in the downlink path is greater than receive power detected in the uplink path, the control circuit switches the TDD transmit mode to the downlink direction. In this manner, the control circuit does not have to control the TDD transmit mode based solely on detected power in the downlink path, where a directional coupler may leak uplink power in the downlink path.

公开(公告)号：US09813229B2

公开(公告)日：2017-11-07

申请号：US14087749

申请日：2013-11-22

申请人： Corning Optical Communications Wireless Ltd

发明人： Ofer Saban ,  Isaac Shapira ,  Yair Zeev Shapira

IPC分类号： H04J3/06 ,  H04L7/033 ,  H04J1/06 ,  H04L7/00

CPC分类号： H04L7/0331 ,  H04J1/06 ,  H04L7/0083

摘要： A high frequency signal is down-converted into an intermediate frequency signal, transmitted over a limited bandwidth medium from a master unit to a remote unit and up-converted back into its original high frequency at the remote unit. The up-conversion is aided by reconstruction of a reference signal embedded at the master unit as a carrier for a management signal which is transmitted to the remote unit through the same limited bandwidth medium together with the intermediate frequency signal. The reference signal is reconstructed using a phase locked loop which includes a charge pump and is kept stable during intervals between bits and messages by a charge pump shutter.

公开(公告)号：US10014945B2

公开(公告)日：2018-07-03

申请号：US15437122

申请日：2017-02-20

申请人： Corning Optical Communications Wireless Ltd

发明人： William Patrick Cune ,  Ofer Saban ,  Isaac Shapira

IPC分类号： H04B10/2575 ,  H04J14/02 ,  H04Q11/00 ,  H04W88/08

CPC分类号： H04B10/25753 ,  H04B10/25752 ,  H04J14/0246 ,  H04J14/0249 ,  H04J14/0252 ,  H04Q11/0005 ,  H04Q11/0067 ,  H04Q11/0071 ,  H04Q2011/0016 ,  H04Q2011/0086 ,  H04W88/085

摘要： Embodiments relate to providing simultaneous digital and analog services in optical fiber-based distributed radio frequency (RF) antenna systems (DASs), and related components and methods. A multiplex switch unit associated with a head-end unit of a DAS can be configured to receive a plurality of analog and digital downlink signals from one or more sources, such as a service matrix unit, and to assign each downlink signal to be transmitted to one or more remote units of the DAS. In one example, when two or more downlink signals are assigned to be transmitted to the same remote unit, a wave division multiplexer/demultiplexer associated with the multiplex switch unit can be configured to wave division multiplex the component downlink signals into a combined downlink signal for remote side transmission and to demultiplex received combined uplink signals into their component uplink signals for head-end side transmission.

公开(公告)号：US09497706B2

公开(公告)日：2016-11-15

申请号：US13771756

申请日：2013-02-20

申请人： Corning Optical Communications Wireless Ltd.

发明人： Nissim Atias ,  Isaac Shapira

IPC分类号： H04W52/02

CPC分类号： H04W52/0251 ,  H04B10/25753 ,  H04W52/0206 ,  H04W52/0254 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/166

摘要： Power management in a distributed communications system, such as a distributed antenna system (DAS), that includes determining user activity at remote units of the DAS. When user activity in one or more remote units falls below or above a specified threshold, power usage by the one or more remote units is reduced or increased accordingly. The power usage may reduced and/or increased by turning select remote units on or off, by increasing or reducing an operating voltage of one or more power amplifiers, and/or by turning select multiple-in, multiple-out (MIMO) front ends on or off. Power may be reduced such that wireless coverage within a specified area is maintained.

摘要翻译： 在诸如分布式天线系统（DAS）的分布式通信系统中的电力管理，其包括确定DAS的远程单元处的用户活动。 当一个或多个远程单元中的用户活动低于或高于指定阈值时，一个或多个远程单元的功率消耗相应减少或增加。 通过增加或减少一个或多个功率放大器的工作电压，和/或通过转动选择多输入多输出（MIMO）前端，可以使选择的远程单元打开或关闭来减少和/或增加功率使用。 开或关 功率可能会降低，从而保持指定区域内的无线覆盖。

公开(公告)号：US20160088623A1

公开(公告)日：2016-03-24

申请号：US14962338

申请日：2015-12-08

申请人： Corning Optical Communications Wireless Ltd.

发明人： Dror Ben-Shlomo ,  Isaac Shapira

IPC分类号： H04W72/04 ,  H04L5/14

CPC分类号： H04W72/0446 ,  H04B1/48 ,  H04B17/318 ,  H04L5/14 ,  H04W72/0406

摘要： Time-division duplexing (TDD) in distributed communications systems, including distributed antenna systems (DASs) is disclosed. In one embodiment, a control circuit is provided and configured to control the TDD transmit mode of a DAS to control the allocation of time slots for uplink and downlink communications signal distribution in respective uplink path(s) and downlink path(s). The control circuit includes separate power detectors configured to detect either a transmit power level in a downlink path or a receive power level in an uplink path. If the transmit power detected in the downlink path is greater than receive power detected in the uplink path, the control circuit switches the TDD transmit mode to the downlink direction. In this manner, the control circuit does not have to control the TDD transmit mode based solely on detected power in the downlink path, where a directional coupler may leak uplink power in the downlink path.

摘要翻译： 公开了分布式通信系统中的时分双工（TDD），包括分布式天线系统（DAS）。 在一个实施例中，提供控制电路并配置为控制DAS的TDD发送模式，以控制在各个上行链路路径和下行链路路径中的上行链路和下行链路通信信号分配的时隙分配。 控制电路包括被配置为检测下行链路路径中的发射功率电平或上行链路路径中的接收功率电平的分离的功率检测器。 如果在下行路径中检测到的发送功率大于在上行链路路径中检测到的接收功率，则控制电路将TDD发送模式切换到下行链路方向。 以这种方式，控制电路不必仅仅基于在下行链路路径中检测到的功率来控制TDD传输模式，其中定向耦合器可能泄漏下行链路路径中的上行链路功率。

公开(公告)号：US20150350756A1

公开(公告)日：2015-12-03

申请号：US14823304

申请日：2015-08-11

申请人： Corning Optical Communications Wireless Ltd

发明人： William Patrick Cune ,  Ofer Saban ,  Isaac Shapira

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

CPC分类号： H04B10/25753 ,  H04B10/25752 ,  H04J14/0246 ,  H04J14/0249 ,  H04J14/0252 ,  H04Q11/0005 ,  H04Q11/0067 ,  H04Q11/0071 ,  H04Q2011/0016 ,  H04Q2011/0086 ,  H04W88/085

摘要： Embodiments relate to providing simultaneous digital and analog services in optical fiber-based distributed radio frequency (RF) antenna systems (DASs), and related components and methods. A multiplex switch unit associated with a head-end unit of a DAS can be configured to receive a plurality of analog and digital downlink signals from one or more sources, such as a service matrix unit, and to assign each downlink signal to be transmitted to one or more remote units of the DAS. In one example, when two or more downlink signals are assigned to be transmitted to the same remote unit, a wave division multiplexer/demultiplexer associated with the multiplex switch unit can be configured to wave division multiplex the component downlink signals into a combined downlink signal for remote side transmission and to demultiplex received combined uplink signals into their component uplink signals for head-end side transmission.

摘要翻译： 实施例涉及在基于光纤的分布式射频（RF）天线系统（DAS）中提供同时的数字和模拟服务以及相关的组件和方法。 与DAS的前端单元相关联的复用开关单元可以被配置为从诸如服务矩阵单元的一个或多个源接收多个模拟和数字下行链路信号，并且将要发送的每个下行链路信号分配给 DAS的一个或多个远程单元。 在一个示例中，当分配两个或更多个下行链路信号以发送到相同的远程单元时，与多路复用开关单元相关联的波分复用器/解复用器可以被配置为将分量下行链路信号波分复用为组合下行链路信号， 并将接收到的组合上行链路信号分离为其前端侧传输的分量上行链路信号。

公开(公告)号：US20140211875A1

公开(公告)日：2014-07-31

申请号：US14227108

申请日：2014-03-27

申请人： Corning Optical Communications Wireless, LTD

发明人： Igor Berlin ,  Yair Oren ,  Rami Reuven ,  Ofer Saban ,  Isaac Shapira

IPC分类号： H04B7/04

CPC分类号： H04B7/0413 ,  H04B1/40 ,  H04B7/022 ,  H04B7/0602 ,  H04B10/271

摘要： The invention is directed to a method and system for supporting MIMO technologies which can require the transport of multiple spatial streams on a traditional Distributed Antenna System (DAS). According to the invention, at one end of the DAS, each spatial stream is shifted in frequency to a pre-assigned band (such as a band at a frequency lower than the native frequency) that does not overlap the band assigned to other spatial streams (or the band of any other services being carried by the DAS). Each of the spatial streams can be combined and transmitted as a combined signal over a common coaxial cable. At the other “end” of the DAS, the different streams are shifted back to their original (overlapping) frequencies but retain their individual “identities” by being radiated through physically separate antenna elements.

公开(公告)号：US10257828B2

公开(公告)日：2019-04-09

申请号：US15975153

申请日：2018-05-09

申请人： Corning Optical Communications Wireless Ltd

发明人： Dror Ben-Shlomo ,  Isaac Shapira

IPC分类号： H04W72/04 ,  H04B1/48 ,  H04L5/14 ,  H04B17/318

摘要： Time-division duplexing (TDD) in distributed communications systems, including distributed antenna systems (DASs) is disclosed. In one embodiment, a control circuit is provided and configured to control the TDD transmit mode of a DAS to control the allocation of time slots for uplink and downlink communications signal distribution in respective uplink path(s) and downlink path(s). The control circuit includes separate power detectors configured to detect either a transmit power level in a downlink path or a receive power level in an uplink path. If the transmit power detected in the downlink path is greater than receive power detected in the uplink path, the control circuit switches the TDD transmit mode to the downlink direction. In this manner, the control circuit does not have to control the TDD transmit mode based solely on detected power in the downlink path, where a directional coupler may leak uplink power in the downlink path.

公开(公告)号：US10141959B2

公开(公告)日：2018-11-27

申请号：US15951780

申请日：2018-04-12

申请人： Corning Optical Communications Wireless Ltd

发明人： Ofer Saban ,  Isaac Shapira

IPC分类号： H04M1/00 ,  H04B1/00 ,  H04B7/0413 ,  H04W88/08 ,  H04L12/64

摘要： Radio-frequency (RF) integrated circuit (RFIC) chip(s) allow for the integration of multiple electronic circuits on a chip to provide distributed antenna system functionalities. RFIC chips are employed in central unit and remote unit components, reducing component cost and size, increasing performance and reliability, while reducing power consumption. The components are also easier to manufacture. The RFIC chip(s) can be employed in distributed antenna systems and components that support RF communications services and/or digital data services.

公开(公告)号：US09949209B2

公开(公告)日：2018-04-17

申请号：US15466963

申请日：2017-03-23

申请人： Corning Optical Communications Wireless Ltd

发明人： Nissim Atias ,  Isaac Shapira

IPC分类号： H04W52/02 ,  H04B10/2575

CPC分类号： H04W52/0251 ,  H04B10/25753 ,  H04W52/0206 ,  H04W52/0254 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/166

摘要： Power management in a distributed communications system, such as a distributed antenna system (DAS), that includes determining user activity at remote units of the DAS. When user activity in one or more remote units falls below or above a specified threshold, power usage by the one or more remote units is reduced or increased accordingly. The power usage may reduced and/or increased by turning select remote units on or off, by increasing or reducing an operating voltage of one or more power amplifiers, and/or by turning select multiple-in, multiple-out (MIMO) front ends on or off. Power may be reduced such that wireless coverage within a specified area is maintained.