Patents Assigned to SOLID, INC.
  • Publication number: 20250141724
    Abstract: Provided are a method of operating a communication node that includes a memory and a processor and receives and processes a communication signal with a variable number of component carriers comprising dividing the communication signal into a plurality of divided signals based on the number of component carriers included in the received communication signal and the number of signal processing paths provided in the communication node and distributing the plurality of divided signals to the signal processing paths provided in the communication node, respectively, and processing the divided signals.
    Type: Application
    Filed: August 24, 2022
    Publication date: May 1, 2025
    Applicant: SOLiD, INC.
    Inventors: Kwangnam SEO, Hyunchae KIM
  • Patent number: 12273833
    Abstract: Provided are a clock synchronization method performed between communication nodes included in a communication network, the clock synchronization method comprises receiving a synchronization source signal through any one of remaining communication nodes except for an uppermost communication node included in the communication network, generating a reference clock for clock synchronization from the received synchronization source signal and transmitting the generated reference clock through a first path including at least a portion reverse to a second path through which a downlink signal is transmitted in the communication network.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: April 8, 2025
    Assignee: SOLiD, INC.
    Inventors: Donghee Kwon, Hoopyo Hong
  • Patent number: 12267792
    Abstract: Provided are an interference cancellation repeater capable of selecting one of a plurality of adaptive filters based on a synchronization signal and canceling interference included in a received signal using the selected adaptive filter and a method of operation thereof.
    Type: Grant
    Filed: August 10, 2020
    Date of Patent: April 1, 2025
    Assignee: SOLID, INC.
    Inventor: Nagwon Kwon
  • Patent number: 12245387
    Abstract: According to one aspect of the disclosure, there is provided a mount bracket for installation of communication device in a structure, the mount bracket including: a bracket body coupled to the structure; a bracket base, to which the communication device is fixed, coupled to the bracket body and rotates to cover the bracket body; and a connection member provided at one end of the bracket body to rotatably connect the bracket base to the bracket body, wherein the bracket base includes an anti-detachment structure for preventing separation from the bracket body during rotation.
    Type: Grant
    Filed: June 29, 2022
    Date of Patent: March 4, 2025
    Assignee: SOLiD, INC.
    Inventor: Woon Yong Jo
  • Patent number: 12231193
    Abstract: A communication node included in a multi-antenna multi-carrier system, when precoding matrices corresponding to some subcarriers from among subcarriers allocated to another communication node connected to the communication node are input, obtains precoding matrices for at least some subcarriers from among the allocated subcarriers by performing spherical interpolation on the input precoding matrices, maps the obtained precoding matrices for the at least some subcarriers to the subcarriers allocated to the other communication node, and performs precoding on the plurality of vector signals using the mapped precoding matrices.
    Type: Grant
    Filed: October 24, 2022
    Date of Patent: February 18, 2025
    Assignees: SOLID, INC., INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY
    Inventors: Nagwon Kwon, Hyunchae Kim, Jihoon Choi
  • Patent number: 12192106
    Abstract: Disclosed is an OpenFlow based distributed antenna system (DAS) policy routing method. The DAS policy routing method includes: extracting, by a DAS unit, a match field from header information of a received frame; and comparing, by the DAS unit, the extracted match field with a matching rule of a forwarding table to route according to a matching traffic transmission policy and output a frame to an output port of the DAS unit.
    Type: Grant
    Filed: January 16, 2022
    Date of Patent: January 7, 2025
    Assignee: SOLID Inc.
    Inventors: Dong Hee Kwon, Hoo Pyo Hong, Young Man Cho
  • Patent number: 12108264
    Abstract: Provided are a communication node which comprises a signal monitoring device configured to receive a plurality of communication signals transmitted from two or more base stations, and to monitor a bandwidth of each of the received communication signals, a frame setter configured to reset a frame structure by merging at least some of blocks in a preset frame structure according to a result of the monitoring, and a framer configured to frame the plurality of communication signals into one frame by including the plurality of communication signals in a block corresponding to a bandwidth of each of the plurality of communication signals according to the reset frame structure.
    Type: Grant
    Filed: March 4, 2020
    Date of Patent: October 1, 2024
    Assignee: SOLiD, INC.
    Inventors: Ok Jin Kim, Min Chang Lee
  • Patent number: 12063131
    Abstract: A communication signal processing method comprises obtaining transmission delay value difference data relating to a difference in transmission delay values in a communication network that varies depending on whether or not a redundant path is used, obtaining redundancy status data relating to whether the redundant path is used, and controlling a parameter of a communication signal transmitted by the communication network based on the transmission delay value difference data when the redundant path is used as a result of determination according to the redundancy status data.
    Type: Grant
    Filed: November 4, 2020
    Date of Patent: August 13, 2024
    Assignee: SOLiD, INC.
    Inventor: Ok Jin Kim
  • Patent number: 12047812
    Abstract: A fronthaul multiplexer according to one aspect of the present invention combines uplink packets in a compressed state that is received from two or more radio units so that the uplink packets are accumulated and combined immediately when received or the uplink packets are recompressed using a compressing method with high compression efficiency when stored in a memory in order to reduce a use amount of memory.
    Type: Grant
    Filed: April 24, 2022
    Date of Patent: July 23, 2024
    Assignee: SOLiD, Inc.
    Inventors: Ho Sik Jang, Hoo Pyo Hong, Woo Jae Kim, Dong Hee Kwon, Jeong Won Kang
  • Patent number: 11923657
    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.
    Type: Grant
    Filed: January 5, 2021
    Date of Patent: March 5, 2024
    Assignee: SOLiD, INC.
    Inventor: Won Song Chang
  • Patent number: 11916717
    Abstract: The present disclosure relates to a method of reducing a Peak to Average Power Ratio (PAPR) in a communication device, and more particularly, to a method of Crest Factor Reduction (CFR) processing of a signal in order to reduce a PAPR in a communication device such as a repeater. The communication device includes: a first CFR module configured generate a first processed signal by CFR processing an original signal; and a second CFR module configured generate a second processed signal by CFR processing the first processed signal, wherein the first processed signal is generated using a first sampling rate, and the second processed signal is generated using a second sampling rate. According to the disclosure, even a communication device with a low sampling rate may effectively remove a peak component of an input signal.
    Type: Grant
    Filed: June 23, 2022
    Date of Patent: February 27, 2024
    Assignee: SOLiD, INC.
    Inventors: Nag Won Kwon, Hee Cheol Yun, Hyun Soo Shin, Hyun Chae Kim
  • Patent number: 11909695
    Abstract: Provided is a method of operating a repeater operating in a time division duplex (TDD) mode which comprises detecting a synchronization signal from a received signal, determining a type of a communication period based on the detected synchronization signal and controlling an operation of a signal linearizer based on the determined type of the communication period.
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: February 20, 2024
    Assignees: SOLiD, INC., HUNERGY CO., LTD.
    Inventors: Nagwon Kwon, Jongkuan Lee
  • Patent number: 11902006
    Abstract: Provided are a method of operating a communication system, the method comprises mapping some antennas selected from among a plurality of antennas of each of a plurality of first communication nodes and reception ports of a second communication node, combining uplink signals mapped to an identical reception port of the second communication node from among uplink signals received through the plurality of antennas, and transmitting the combined signals to the mapped reception ports of the second communication node, respectively.
    Type: Grant
    Filed: November 25, 2020
    Date of Patent: February 13, 2024
    Assignee: SOLiD, INC.
    Inventors: Woosik Moon, Hoony Hong, Kwon Kim, Hyunchae Kim
  • Publication number: 20240049152
    Abstract: There is provided a method of processing uplink Ethernet packets of an aggregation node included in a distributed antenna system, the method includes: receiving a plurality of uplink Ethernet packets; summing the plurality of received uplink Ethernet packets; and transmitting the summed uplink Ethernet packets in an uplink direction.
    Type: Application
    Filed: October 18, 2023
    Publication date: February 8, 2024
    Applicant: SOLiD, INC.
    Inventors: Dong Hee KWON, Hoo Pyo HONG, Yong Hoon KANG, Dae Young KIM, Young Man CHO
  • Publication number: 20240022346
    Abstract: Provided is an optical transceiver including: a receiver configured to receive an optical transmission signal including wavelength information from another optical transceiver through a multiplexer/demultiplexer connected to the receiver; and a controller configured to identify a reception wavelength for communication with the other optical transceiver and to determine a wavelength corresponding to the reception wavelength as a transmission wavelength for communication with the other optical transceiver, based on the wavelength information included in the optical transmission signal.
    Type: Application
    Filed: August 9, 2023
    Publication date: January 18, 2024
    Applicant: SOLiD, Inc.
    Inventors: Bum Soo PARK, Tae Hyeong KIM, Chi Young PARK, Seung Hee LEE, Eun Sung LEE
  • Patent number: 11863237
    Abstract: An optical communication device includes: a first multiplexer including a first transmitting port and a second transmitting port; a downstream wavelength analyzer configured to analyze first transmission light to recognize a first downstream wavelength corresponding to the first transmission light and analyze second transmission light to recognize a second downstream wavelength corresponding to the second transmission light; and a controller configured to generate a first control signal for allowing the first transmitting port to pass light corresponding to the first downstream wavelength and allowing the second transmitting port to pass light corresponding to the second downstream wavelength, and output the first control signal to the first multiplexer, wherein the first multiplexer, according to the first control signal, controls the first transmitting port to correspond to the first downstream wavelength and controls the second transmitting port to correspond to the second downstream wavelength.
    Type: Grant
    Filed: November 23, 2021
    Date of Patent: January 2, 2024
    Assignee: SOLiD, INC.
    Inventor: Eun Sung Lee
  • Patent number: 11825429
    Abstract: There is provided a method of processing uplink Ethernet packets of an aggregation node included in a distributed antenna system, the method includes: receiving a plurality of uplink Ethernet packets; summing the plurality of received uplink Ethernet packets; and transmitting the summed uplink Ethernet packets in an uplink direction.
    Type: Grant
    Filed: November 30, 2021
    Date of Patent: November 21, 2023
    Assignee: SOLID, INC.
    Inventors: Dong Hee Kwon, Hoo Pyo Hong, Yong Hoon Kang, Dae Young Kim, Young Man Cho
  • Patent number: 11817918
    Abstract: A distributed antenna system of the present invention implements duplication by a method of configuring a first headend unit and a second headend unit in an active state or in a standby state and connecting a hub unit or a remote unit to the first headend unit and the second headend unit and by a method of connecting, through a redundancy link, a hub unit or remote units of a branch group branched from and connected to each headend unit, activating the redundancy link according to the control of an active headend unit when an error occurs in a frame transmission path, and changing logical port states of a hub unit or remote units that cannot transmit frames due to the error in order to change the frame transmission path so that frame transmission is possible through the activated redundancy link.
    Type: Grant
    Filed: July 25, 2019
    Date of Patent: November 14, 2023
    Assignee: Solid, Inc.
    Inventors: Ho Sik Jang, Hoo Pyo Hong, Hyong Ho Kim, Dong Hee Kwon, Kyung Eun Han, Jin Hwa Ku, Dae Young Kim, Young Man Cho
  • Publication number: 20230353193
    Abstract: The disclosure provides a method of operating a distributed antenna system (DAS) interworking with a spectrum sharing system (SSS) including: transmitting, by a node unit of the DAS, DAS information to a management system entity (MSE); generating, by the MSE, linkage information based on the DAS information and radio service device (RSD) information received from at least one RSD of the SSS; transmitting, by the MSE, the interworking information to a system controller of the SSS; receiving, by the MSE, allocation information including a result of allocating shared radio resources to the DAS and the at least one RSD, respectively, according to the interworking information from the system controller; transmitting, by the MSE, the allocation information to the node unit; and operating, by the node unit, according to the allocation information.
    Type: Application
    Filed: July 10, 2023
    Publication date: November 2, 2023
    Applicant: SOLiD, INC.
    Inventor: Ok Jin KIM
  • Patent number: 11799588
    Abstract: A technology related to a distributed antenna system is disclosed. In an exemplary embodiment, a distributed antenna system may include a master unit and a plurality of remote units. The master unit may be interfaced with a wireless communications network and perform a bidirectional simultaneous digital radio frequency distribution of a wireless signal. The plurality of remote units may be each coupled to the master unit, and each perform a wireless transmission or reception of a split radio frequency signal to or from terminals located within a coverage. The master unit and the plurality of remote units may transmit or receive digital radio frequency signals in a wavelet transform domain. The master unit may determine whether the digital radio frequency signal, transmitted by each of the remote units, is normal, and merge the digital radio frequency signals.
    Type: Grant
    Filed: January 14, 2021
    Date of Patent: October 24, 2023
    Assignee: SOLiD Inc.
    Inventor: Young Man Cho