公开(公告)号：US10742270B1

公开(公告)日：2020-08-11

申请号：US16440502

申请日：2019-06-13

Applicant: ADVANCED RF TECHNOLOGIES, INC.

Inventor： Dae Woong Kim

IPC: H04B7/024 ,  H04L5/14 ,  H04B7/0456 ,  H04B7/0452

Abstract: An integrated antenna distributed system incorporates various types of communication signals, such as mobile communication signals, public safety signals, Wi-Fi signals, and other types of communication signals. Such a system uses a single reference signal to support MIMO using a single optical cable or a single fiber optic cable, and a signal from a remote location, to support commercial telecommunication services and Wi-Fi services simultaneously. The reference signal is used for frequency stability of remote units (RUs) connected to the head end (HE). For example, a reference signal is selected and sent from the HE to RUs, a bandwidth and frequency conversion of signals to be transmitted is specified and/or performed, a RU receives the converted signals and the reference signal from the HE, where the converted signals may be frequency or band-constrained, and the converted signals are converted at the RUs back to their original frequencies or bands.

公开(公告)号：US10123282B2

公开(公告)日：2018-11-06

申请号：US15226609

申请日：2016-08-02

Applicant: ADVANCED RF TECHNOLOGIES, INC.

Inventor： Young-Hoon Ko

IPC: H04B7/005 ,  H04W52/24 ,  H04W52/52 ,  H04W52/42 ,  H04B7/024 ,  H04B17/10 ,  H03G3/30 ,  H04B1/04

Abstract: A distributed antenna system interface tray (DIT) includes a plurality of per-carrier points of interface (POIs), a combiner, and a DIT management system (DMS). Each of the plurality of POIs may be configured to couple with a corresponding per-carrier base transceiver station (BTS), receive a per-carrier downlink (DL) signal from the corresponding BTS, filter the DL signal through a duplexer, adjust the filtered DL signal based on a designated level, output the filtered DL signal to a combiner, receive an uplink (UL) signal from the combiner, adjust the UL signal based on a designated gain, and transmit the UL signal to the corresponding BTS. The combiner may be configured to combine a plurality of DL signals received from the plurality of POIs into a combined DL signal, transmit the combined DL signal to a distributed antenna system, receive a UL signal from the distributed antenna system, and distribute the UL signal to the plurality of POIs.

公开(公告)号：US09603032B2

公开(公告)日：2017-03-21

申请号：US13831508

申请日：2013-03-14

Applicant: ADVANCED RF TECHNOLOGIES, INC.

Inventor： Young-Hoon Ko

IPC: H04W24/00 ,  H04B7/02 ,  H04W24/04 ,  H04W88/08 ,  H04B17/23 ,  H04B17/345

CPC classification number: H04W24/00 ,  H04B7/024 ,  H04B17/23 ,  H04B17/345 ,  H04W24/04 ,  H04W88/085

Abstract: A method of automatically measuring noise levels of a plurality of uplink paths in a Distributed Antenna System (DAS) includes: sequentially measuring a noise level of each uplink path of the plurality of uplink paths; extracting the noise level of each uplink path at a final end of the uplink path; detecting the noise level of each uplink path; and determining a status of each uplink path by comparing the detected noise level with a threshold value.

公开(公告)号：US10735095B1

公开(公告)日：2020-08-04

申请号：US16440505

申请日：2019-06-13

Applicant: ADVANCED RF TECHNOLOGIES, INC.

Inventor： Dae Woong Kim

IPC: H04B10/2575 ,  H04L5/00 ,  H04L5/14 ,  H04B7/0413

Abstract: An integrated antenna distributed system incorporates various types of communication signals, such as mobile communication signals, public safety signals, WiFi signals, and other types of communication signals. Such a system uses a single reference signal to support MIMO and Massive MIMO functions using a single optical cable or a single fiber optic cable, and a signal from a remote location. The reference signal is used for frequency stability of remote units (RUs) connected to the head end (HE). For example, a reference signal is selected and sent from the HE to RUs, a bandwidth and frequency conversion of signals to be transmitted is specified and/or performed, a RU receives the converted signals and the reference signal from the HE, where the converted signals may be frequency or band-constrained, and the converted signals are converted at the RUs back to their original frequencies or bands.

公开(公告)号：US20180191440A1

公开(公告)日：2018-07-05

申请号：US15395280

申请日：2016-12-30

Applicant: ADVANCED RF TECHNOLOGIES, INC.

Inventor： Jung-Hee Won

IPC: H04B10/29 ,  H04B7/04

CPC classification number: H04B10/29 ,  H04B1/00 ,  H04B7/0413 ,  H04W88/085

Abstract: A multi-band multiple-input multiple-output (MIMO) transmitting apparatus and method of using an analog optical repeater that relays a downstream signal and an upstream signal between a base station and a terminal is provided. A head end of the analog optical repeater converts a frequency of a signal through a frequency converter to prevent the signal from overlapping with other signals having the same frequencies of a downstream multi-band, and uses a band already used by an optical module, and thus does not need to secure an additional band in the optical module. Accordingly, signals at the same frequency input into the HE can be transmitted through the optical cable and to the RU without overlapping. A flow of upstream signals received from the terminal are handled and transmitted similarly to the downstream signals, but in the opposite direction, whereby multi-band MIMO is implemented.

公开(公告)号：US09179501B2

公开(公告)日：2015-11-03

申请号：US13836126

申请日：2013-03-15

Applicant: Advanced RF Technologies, Inc.

Inventor： Young-Hoon Ko

IPC: H04W88/08

CPC classification number: H04W88/085

Abstract: A band combiner unit includes a plurality of carrier modules (CMs) each configured to be connected to a base transceiver station (BTS) or bi-directional amplifier (BDA) for corresponding ones of the carriers, wherein each of the CMs is configured to transmit downlink signals from the corresponding BTS/BDA, adjust the downlink signals, and transmit the downlink signals to a first combiner, and to receive uplink signals from a second combiner, adjust the uplink signals, and transmit the uplink signals to the corresponding BTS/BDA, the first combiner configured to combine the downlink signals from the CMs, and transmit the combined downlink signals to a distributed antenna system (DAS), the second combiner configured to split a combined uplink signal from a DAS, and transmit the split uplink signals to corresponding ones of the CMs, and a band combiner unit controller for monitoring and controlling the CMs.

Abstract translation: 频带组合器单元包括多个载波模块（CM），每个载波模块被配置为连接到用于对应的载波的基站（BTS）或双向放大器（BDA），其中每个CM被配置为传输 来自相应的BTS / BDA的下行链路信号，调整下行链路信号，并将下行链路信号发送到第一组合器，并从第二组合器接收上行链路信号，调整上行链路信号，并将上行链路信号发送到相应的BTS / BDA ，所述第一组合器被配置为组合来自所述CM的下行链路信号，并将所述组合的下行链路信号发送到分布式天线系统（DAS），所述第二组合器被配置为从DAS分离组合的上行链路信号，并将所述分离的上行链路信号发送到 对应的CM，以及用于监视和控制CM的频带组合器单元控制器。

公开(公告)号：US20140270787A1

公开(公告)日：2014-09-18

申请号：US13844011

申请日：2013-03-15

Applicant: ADVANCED RF TECHNOLOGIES, INC.

Inventor： Namchul Lee

IPC: H04B10/2575 ,  H04B10/2507

CPC classification number: H04B10/25753

Abstract: An optic distributed system includes a head end unit (HE) comprising a head end radio frequency unit (HRFU), at least one remote unit (RU), a corresponding optic cable connected between the HRFU and the at least one RU, and a controller configured to detect a forward radio frequency (RF) signal received from a base transceiver station (BTS), to perform a system wide commissioning function on the HRFU corresponding to the detection, to perform the system wide commissioning function on the at least one RU in accordance with a signal intensity of the forward RF signal from the HRFU, and to perform the system wide commissioning function on the optic cable to compensate for losses in the optic cable during signal transmissions between the HRFU and the at least one RU.

Abstract translation: 光分布式系统包括头端单元（HE），其包括头端射频单元（HRFU），至少一个远程单元（RU），连接在HRFU与至少一个RU之间的对应光缆，以及控制器 被配置为检测从基站收发台（BTS）接收的前向射频（RF）信号，以对与所述检测相对应的所述HRFU执行系统广泛的调试功能，以在所述至少一个RU上执行系统广泛的调试功能 根据来自HRFU的正向RF信号的信号强度，并且在光缆上执行系统广泛的调试功能，以补偿在HRFU和至少一个RU之间的信号传输期间光缆中的损耗。

公开(公告)号：US20140233435A1

公开(公告)日：2014-08-21

申请号：US13836126

申请日：2013-03-15

Applicant: Advanced RF Technologies, Inc.

Inventor： Young-Hoon Ko

IPC: H04W88/08

CPC classification number: H04W88/085

Abstract: A band combiner unit includes a plurality of carrier modules (CMs) each configured to be connected to a base transceiver station (BTS) or bi-directional amplifier (BDA) for corresponding ones of the carriers, wherein each of the CMs is configured to transmit downlink signals from the corresponding BTS/BDA, adjust the downlink signals, and transmit the downlink signals to a first combiner, and to receive uplink signals from a second combiner, adjust the uplink signals, and transmit the uplink signals to the corresponding BTS/BDA, the first combiner configured to combine the downlink signals from the CMs, and transmit the combined downlink signals to a distributed antenna system (DAS), the second combiner configured to split a combined uplink signal from a DAS, and transmit the split uplink signals to corresponding ones of the CMs, and a band combiner unit controller for monitoring and controlling the CMs.

Abstract translation: 频带组合器单元包括多个载波模块（CM），每个载波模块被配置为连接到用于对应的载波的基站（BTS）或双向放大器（BDA），其中每个CM被配置为传输 来自相应的BTS / BDA的下行链路信号，调整下行链路信号，并将下行链路信号发送到第一组合器，并从第二组合器接收上行链路信号，调整上行链路信号，并将上行链路信号发送到相应的BTS / BDA ，所述第一组合器被配置为组合来自所述CM的下行链路信号，并将所述组合的下行链路信号发送到分布式天线系统（DAS），所述第二组合器被配置为从DAS分离组合的上行链路信号，并将所述分离的上行链路信号发送到 对应的CM，以及用于监视和控制CM的频带组合器单元控制器。

公开(公告)号：US10305575B2

公开(公告)日：2019-05-28

申请号：US13841447

申请日：2013-03-15

Applicant: ADVANCED RF TECHNOLOGIES, INC.

Inventor： Jong-Min Kim

IPC: H01Q1/00 ,  H03M1/10 ,  H04B7/155 ,  H01Q3/26 ,  H01Q21/28 ,  H04L25/24

Abstract: A mobile telecommunication wireless repeater includes: a combination stage for combining a received signal with a feedback cancellation signal; a comparison stage for comparing an input signal of the combination stage with an output signal of the combination stage and determining a weighted value and a time offset value for a feedback signal to be cancelled, based on the comparison; and a recombination stage comprising one or more adaptive filters and configured to receive the weighted value and the time offset value and generate the feedback cancellation signal according to the weighted value and the time offset value.

公开(公告)号：US20140064730A1

公开(公告)日：2014-03-06

申请号：US13835332

申请日：2013-03-15

Applicant: ADVANCED RF TECHNOLOGIES, INC.

Inventor： Young-Hoon Ko

IPC: H04B10/2575

CPC classification number: H04B10/2575 ,  H04B10/25754

Abstract: An optic Distributed Antenna System includes a Head End (HE) configured to adjust a first signal for a first carrier at a first band to a first level, to adjust a second signal having at least a carrier different from the first carrier or a band different from the first band to a second level, to combine the first and second signals, to perform Electronic/Optic conversion on the combined signal, and to optic-distribute and send the combined optic signal, and a plurality of Remote Units (RUs) each connected to the HE over a corresponding single optic line, wherein each of the RUs is configured to perform Optic/Electronic conversion on the combined optic signal, to adjust the converted signal for each signal band, to perform high-power amplification on the adjusted signals, to multiplex the amplified signals, and to transmit the multiplexed signal to a Mobile station via at least one antenna.

Abstract translation: 光分配天线系统包括头端（HE），其被配置为将第一频带处的第一载波的第一信号调整到第一电平，以调整具有至少不同于第一载波的载波或不同频带的载波的第二信号 从第一频带到第二电平，组合第一和第二信号，以对组合的信号进行电子/光学转换，以及光学分配和发送组合的光信号，以及多个远程单元（RU），每个 通过相应的单个光线路连接到HE，其中每个RU被配置为对组合的光信号执行Optic / Electronic转换，以调整每个信号频带的转换信号，以对经调整的信号执行高功率放大 以复用放大的信号，并且经由至少一个天线将复用的信号发送到移动站。