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.

公开(公告)号：US10673492B2

公开(公告)日：2020-06-02

申请号：US16118793

申请日：2018-08-31

Applicant: SOLiD, INC.

Inventor： Yong Ki Cho

IPC: H04B7/024 ,  H04L29/06 ,  H04L5/00 ,  H04W72/04

Abstract: There is provided a first unit which constitutes a point-to-multipoint communication system and is connected to communicate with each of a plurality of second units. The first unit includes a control signal extraction unit, a signal switching unit and a controller. The control signal extraction unit extracts first control signals respectively transmitted from the plurality of second units. The signal switching unit includes a switching circuit, and selects any one of the first control signals respectively received through individual signal transmission lines. The controller receives the first control signal selected by the signal switching unit, determines an allocation ID to be allocated to a second unit corresponding to the selected first control signal based on the initial identification information of the selected first control signal, and controls the determined allocation ID to be transmitted to the corresponding second unit.

公开(公告)号：US20200162157A1

公开(公告)日：2020-05-21

申请号：US16752982

申请日：2020-01-27

Applicant: SOLiD, INC.

Inventor： Ok Jin Kim

IPC: H04B10/079 ,  H04L7/00 ,  H04J3/06 ,  H04L7/04 ,  H04B10/2575

Abstract: The present invention provides a method of optical transmission delay compensation of a system including a main unit and a remote unit, wherein the main unit and the remote unit are connected to each other through an optical transmission line, including: receiving a reference signal, by the remote unit, generated by the main unit through the optical transmission line; analog converting the reference signal and performing analog processing on the reference signal; converting the analog-processed reference signal into an RF signal and radiating the RF signal; and measuring a delay time until the reference signal is generated and radiated as the RF signal. Accordingly, it is possible to obtain an effect of preventing degradation of service quality due to interference by synchronizing remote units and improving the service quality.