公开(公告)号：US11316589B2

公开(公告)日：2022-04-26

申请号：US17125183

申请日：2020-12-17

Applicant: SOLiD, INC.

Inventor： Bum Soo Park

IPC: H04B10/00 ,  H04B10/40 ,  H04B10/50 ,  H04B10/572 ,  H04J14/02

Abstract: Provided is an optical transceiver including: an optical transmitter configured to sequentially generate a plurality of optical transmission signals each including transmission wavelength information and output the plurality of optical transmission signals to a connected multiplexer/demultiplexer; and a controller configured to generate the transmission wavelength information for each of the plurality of optical transmission signals.

公开(公告)号：US11297514B2

公开(公告)日：2022-04-05

申请号：US16652912

申请日：2019-07-23

Applicant: SOLiD, INC.

Inventor： Sangwook Kang ,  Hoony Hong ,  Hyunchae Kim ,  Kwon Kim ,  Woosik Moon

IPC: H04W16/26 ,  H04W56/00 ,  H04B7/155 ,  H04L5/14

Abstract: A method of operating a repeater comprises detecting a synchronization signal from a received communication signal, identifying a time division duplex (TDD) switching pattern based on a power change of the communication signal over time and switching an uplink operation and a downlink operation of the repeater based on the detected synchronization signal and the TDD switching pattern.

公开(公告)号：US20220085877A1

公开(公告)日：2022-03-17

申请号：US17478141

申请日：2021-09-17

Applicant: SOLiD, INC.

Inventor： Eun Sung LEE

IPC: H04B10/071 ,  H04Q11/00

Abstract: Provided is an optical communication device including: a multiplexer configured to multiplex one or more input optical signals to output a single first optical signal; a signal generator configured to generate a second optical signal having a preset wavelength; a filter configured to generate a third optical signal by combining the first optical signal and the second optical signal; a switch configured to connect any one of a plurality of optical cables connected to the switch with the filter to transmit the third optical signal through any one of the plurality of optical cables; and a controller configured to control the switch by analyzing reflected light of the second optical signal.

公开(公告)号：US20220065973A1

公开(公告)日：2022-03-03

申请号：US17006764

申请日：2020-08-28

Applicant: SOLiD, Inc.

Inventor： Young Man Cho ,  Yvonne Hee Jun Cho

IPC: G01S1/04 ,  G01S1/10 ,  H04B17/318

Abstract: Disclosed is a beacon-based positioning system. A beacon position in which a beacon is installable is defined in a target space, and a path loss model of radio frequency (RF) signals between all beacon positions and all observation positions of a scanner is determined. Among all possible installation plans for the beacon positions, an installation plan in which different beacon signals, whose RSSIs calculated using the path loss model have significant values, are received in a number greater than or equal to a minimum reference number and a total number of the beacons installed is minimum is determined as an optimal installation plan. The optimization problem of determining the optimal installation plan may be expressed by binary linear programming.

公开(公告)号：US11265139B2

公开(公告)日：2022-03-01

申请号：US17077489

申请日：2020-10-22

Applicant: SOLiD, INC.

Inventor： Bum Soo Park

IPC: H04L7/00 ,  G04R20/02 ,  H04B10/40 ,  H04B10/50

Abstract: An optical communication device including a GPS receiver receiving and outputting a GPS signal from a satellite; a main controller configured to generate and output synchronization data based on the GPS signal; and an optical transceiver configured to generate an optical signal by superposing input payload data and the synchronization data, and to output the optical signal, wherein a first communication channel corresponding to the payload data and a second communication channel corresponding to the synchronization data are different communication channels. According to embodiments, GPS information for synchronization together with payload data, which is information to be transmitted, may be efficiently transmitted between optical communication devices located in remote locations without separate wavelength allocation and connection of an optical cable, by using an auxiliary management and control channel (AMCC).

公开(公告)号：US11252092B2

公开(公告)日：2022-02-15

申请号：US17026314

申请日：2020-09-21

Applicant: SOLiD Inc.

Inventor： Dong Hee Kwon ,  Hoo Pyo Hong ,  Young Man Cho

IPC: H04L12/813 ,  H04L47/20 ,  H04B7/022 ,  H04L41/0803 ,  H04L41/0893 ,  H04L45/02 ,  H04W88/08 ,  H04L45/64 ,  H04L45/302 ,  H04L47/2441

Abstract: Disclosed is a distributed antenna system (DAS). The DAS includes a DAS controller, which is an OpenFlow controller, and one or more DAS units in order to dynamically control a traffic transmission policy of the DAS units using an OpenFlow protocol, wherein the DAS controller generates and changes a traffic transmission policy by reflecting a traffic transmission policy change request by operator manipulation or a software-defined network supporting application and a need for changing of the traffic transmission policy according to a status of the DAS unit and a status of a port, and the DAS unit transmits received traffic to a destination according to the policy.

公开(公告)号：US11029944B2

公开(公告)日：2021-06-08

申请号：US15862101

申请日：2018-01-04

Applicant: SOLiD, INC.

Inventor： Bongcheol Na

IPC: G06F8/658 ,  H04L12/771 ,  G06F8/61 ,  H04L29/08 ,  G06F8/71 ,  H04L12/24 ,  H04B7/022

Abstract: The inventive concept relate to a device and method of managing data of a distributed antenna system. According to an embodiment of the inventive concept, a data management device of a distributed antenna system includes an unpackaging unit, when a package file which is generated by packaging firmware files of a plurality of devices constituting a distributed antenna system is input, configured to unpackage the package file; a control unit configured to determine a device requiring firmware update by comparing version information of the package file with version information of a firmware file of each of the devices included in the unpackaged package file; and a transmission unit configured to transmit a latest version of a firmware file to a device corresponding to a top node of the device requiring firmware update according to a result of the determination.

公开(公告)号：US11025306B2

公开(公告)日：2021-06-01

申请号：US15540625

申请日：2015-12-30

Applicant: SOLiD, INC.

Inventor： Doyoon Kim ,  Kwangnam Seo

IPC: H04B7/02 ,  H04B7/022 ,  H04L25/03 ,  H04L25/26 ,  H04B7/155 ,  H04B10/2575 ,  H04W88/08

Abstract: According to an aspect of the inventive concept, there is provided a signal processing method performed in a distributed antenna system, includes extracting at least a part of sample data corresponding to an occupied frequency band from a digitized analog RF signal; and combining the extracted sample data.

公开(公告)号：US20210126767A1

公开(公告)日：2021-04-29

申请号：US17077489

申请日：2020-10-22

Applicant: SOLiD, INC.

Inventor： Bum Soo PARK

IPC: H04L7/00 ,  H04B10/50 ,  H04B10/40 ,  G04R20/02

Abstract: An optical communication device including a GPS receiver receiving and outputting a GPS signal from a satellite; a main controller configured to generate and output synchronization data based on the GPS signal; and an optical transceiver configured to generate an optical signal by superposing input payload data and the synchronization data, and to output the optical signal, wherein a first communication channel corresponding to the payload data and a second communication channel corresponding to the synchronization data are different communication channels. According to embodiments, GPS information for synchronization together with payload data, which is information to be transmitted, may be efficiently transmitted between optical communication devices located in remote locations without separate wavelength allocation and connection of an optical cable, by using an auxiliary management and control channel (AMCC).

公开(公告)号：US20210117179A1

公开(公告)日：2021-04-22

申请号：US17075253

申请日：2020-10-20

Applicant: SOLiD, INC.

Inventor： Bum Soo PARK ,  Chi Young Park ,  Gil Koog Kim

IPC: G06F8/65 ,  H04B10/40 ,  H04B10/50 ,  H04B10/60

Abstract: Provided is an optical transceiver including: a controller configured to output firmware update data for updating firmware of another optical transceiver connected to the optical transceiver through an optical cable; and a transmitter configured to generate an optical signal by superposing input payload data and the firmware update data, and to transmit the optical signal to the other optical transceiver. According to embodiments, the firmware of a remote optical transceiver at a remote location is automatically updated without affecting payload data, which is information to be transmitted.