公开(公告)号：US20210218222A1

公开(公告)日：2021-07-15

申请号：US17141505

申请日：2021-01-05

Applicant: SOLiD, INC.

Inventor： Won Song CHANG

IPC: H01S5/042 ,  H04B10/50

Abstract: Provided are a laser diode driver for a multilevel optical signal and a multilevel optical signal transmission device including the same, wherein the laser diode driver includes: a clock generator configured to generate and output a clock signal; a first latch configured to delay output of data corresponding to a first timing of the clock signal from among data sequentially input at each data input period; a second latch configured to delay output of data corresponding to a second timing of the clock signal from among data sequentially input at each data input period; a first synchronization processor configured to output a signal corresponding to the data input by the first latch according to the clock signal; and a second synchronization processor configured to output a signal corresponding to the data input by the second latch according to the clock signal.

公开(公告)号：US20210184773A1

公开(公告)日：2021-06-17

申请号：US17125183

申请日：2020-12-17

Applicant: SOLiD, INC.

Inventor： Bum Soo PARK

IPC: 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：US20210167860A1

公开(公告)日：2021-06-03

申请号：US17106503

申请日：2020-11-30

Applicant: SOLiD, INC.

Inventor： Bum Soo PARK

IPC: H04B10/50 ,  H04B10/40 ,  H04B10/572

Abstract: Provided is an optical transceiver including a reference tunable laser module configured to generate and output light of a reference wavelength; a first general tunable laser module configured to generate and output light of a first wavelength; and a controller configured to control a tuning operation of the first wavelength of the first general tunable laser module, based on information about a relationship between the reference wavelength and the first wavelength.

公开(公告)号：US11005699B2

公开(公告)日：2021-05-11

申请号：US17026129

申请日：2020-09-18

Applicant: SOLiD, Inc.

Inventor： Dong Hee Kwon ,  Hoo Pyo Hong ,  Young Man Cho ,  Dae Young Kim ,  Hyun Jung Kim

IPC: H04L27/34 ,  H04L12/709 ,  H04L12/851 ,  H04L12/721

Abstract: A TSN-based distributed antenna system including a headend unit, one or more TSN switches, and one or more remote units and a fronthaul transport network constituted by the headend unit, the TSN switch, and the remote unit is provided. The packet-based fronthaul network constituted by the headend unit, the TSN switch, and the remote unit transmits traffic in a time-deterministic manner while minimizing packet loss through Ethernet to which TSN standards are applied.

公开(公告)号：US11005641B2

公开(公告)日：2021-05-11

申请号：US15421799

申请日：2017-02-01

Applicant: SOLiD, INC.

Inventor： Jaehun Choi

IPC: H04L5/14 ,  H04B7/024 ,  H04B7/0413

Abstract: According to an aspect of the inventive concept, there is provided a master unit included in a distributed antenna system of a frequency division duplex scheme, includes: a frequency converting unit converting a frequency of a first signal received from a base station into a predetermined frequency to generate a first frequency conversion signal; a signal combining unit combining the first frequency conversion signal and a second signal received from the base station to generate a transmit signal; and a signal transmitting/receiving unit transmitting the transmit signal to a remote unit connected through a single transmission line.

公开(公告)号：US20210091464A1

公开(公告)日：2021-03-25

申请号：US16671166

申请日：2019-10-31

Applicant: SOLiD, INC.

Inventor： Dong Hee KWON ,  Yong Hoon KANG

IPC: H01Q3/38 ,  H04B7/024 ,  H04W72/04

Abstract: According to an aspect of the inventive concept of the disclosure, an evolved radio access network comprises: a plurality of signal sources supporting any one of heterogeneous mobile communication technology standards and data services, a hub connected to a plurality of signal sources, and a plurality of remote units connected through a hub and a transmission network.

公开(公告)号：US20210006497A1

公开(公告)日：2021-01-07

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 ,  H04B7/022 ,  H04L12/24 ,  H04L12/751

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：US10819644B2

公开(公告)日：2020-10-27

申请号：US16145252

申请日：2018-09-28

Applicant: SOLiD Inc.

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

IPC: H04L12/813 ,  H04B7/022 ,  H04L12/24 ,  H04L12/751 ,  H04W88/08 ,  H04L12/715 ,  H04L12/725 ,  H04L12/851

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：US20200322053A1

公开(公告)日：2020-10-08

申请号：US16906102

申请日：2020-06-19

Applicant: SOLiD Inc.

Inventor： Young Man CHO ,  Hee Hwan KWAK

IPC: H04B10/2575 ,  H04W52/02

Abstract: An analog distributed antenna system having a set of small cells as a signal source is provided. A proposed cellular communication system includes an upper small cell unit including upper protocol processors configured to process an upper first part of a protocol stack of a small cell, a lower small cell unit including lower protocol processors configured to process a remaining second part of the protocol stack of the small cell, and a first matching switch configured to respectively match the lower protocol processors to a plurality of remote units. According to one aspect, the cellular communication system includes a common controller configured to control activation of the plurality of upper protocol processors of the upper small cell unit and the plurality of lower protocol processors of the lower small cell unit according to a required service capacity and appropriately control an operation of the first matching switch.

公开(公告)号：US20200177432A1

公开(公告)日：2020-06-04

申请号：US16638602

申请日：2019-07-05

Applicant: SOLID, INC.

Inventor： Nagwon KWON

IPC: H04L27/26 ,  H04L5/00 ,  H04W72/04 ,  H04J11/00 ,  H04W56/00

Abstract: A synchronization detection method of a repeater comprises receiving a communication signal comprising a plurality of synchronization signal blocks respectively belonging to different frequency ranges, determining a priority of a frequency range in which the plurality of synchronization signal blocks are to be detected based on signal level for each frequency range and detecting a synchronization signal block included in each frequency range according to the determined priority.