Patents by Inventor Young-Il Choi

Young-Il Choi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11153761
    Abstract: Spectrum management may be provided. A first Radio Frequency (RF) event metric may be received from a first service end point. The first RF event metric may comprise a time a first event occurred. A second RF event metric may be received from a second service end point. The second RF event metric may comprise a time a second event occurred. Then it may be determined that the time the first event occurred and the time the second event occurred are substantially congruent. Next, in response to determining that the time the first event occurred and the time the second event occurred are substantially congruent, the first service end point and the second service end point may be grouped in a first RF group thereby allowing frequency re-use across similar RF groups. Then different channels may be assigned to the first service end point and the second service end point.
    Type: Grant
    Filed: January 7, 2020
    Date of Patent: October 19, 2021
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Santosh Babaji Kulkarni, Vishal Satyendra Desai, Pooya Monajemi, Young Il Choi
  • Patent number: 11136646
    Abstract: Disclosed is a thermal reduction apparatus. The thermal reduction apparatus according to the exemplary embodiment includes: a preheating unit which preheats a to-be-reduced material and loads the to-be-reduced material into a reducing unit; the reducing unit which is connected to the preheating unit and in which a thermal reduction reaction of the to-be-reduced material occurs; a cooling unit which is connected to the reducing unit and from which the to-be-reduced material flowing into the cooling unit is unloaded to the outside; a gate device which is installed between the preheating unit and the reducing unit; a gate device which is installed between the reducing unit and the cooling unit; a condensing device which is connected to the reducing unit and condenses a metal vapor; a first blocking unit which is installed in the reducing unit; and a second blocking unit which is installed in the reducing unit so as to be spaced apart from the first blocking unit.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: October 5, 2021
    Assignee: RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Dong Kyun Choo, Young Il Kim, Kil Won Cho, Wung Yong Choo, Jong Min Park, Jae Sin Park, Gilsoo Han, Good-Sun Choi, Gyu Chang Lee, Dae Kyu Park, Moon Chul Kim
  • Publication number: 20210289493
    Abstract: A network system comprises a plurality of access points (APs) and a distributed cache. The distributed cache is formed using memory in the plurality of APs. The plurality of APs are configured to measure telemetry data and store the telemetry data in the distributed cache. One of the plurality of APs is assigned as a controller AP configured to assign, based on the telemetry data stored in the distributed cache, multiple APs of the plurality of APs to different roles to analyze the plurality of APs and update resource configurations of the plurality of APs.
    Type: Application
    Filed: March 10, 2020
    Publication date: September 16, 2021
    Inventors: Young Il CHOI, Vishal S. DESAI, Santosh B. KULKARNI, Pooya MONAJEMI
  • Patent number: 11118260
    Abstract: The present invention relates to a zirconium alloy cladding with improved oxidation resistance at a high temperature and a method of manufacturing the same. More particularly, the zirconium alloy cladding includes a zirconium alloy cladding; and a Cr—Al thin film coated on the cladding, wherein the thin film is deposited through arc ion plating and the content of Al in the thin film is 5% by weight to 20% by weight.
    Type: Grant
    Filed: November 14, 2018
    Date of Patent: September 14, 2021
    Assignee: KOREA ATOMIC ENERGY RESEARCH INSTITUTE
    Inventors: Jung Hwan Park, Hyun Gil Kim, Yang Il Jung, Dong Jun Park, Byoung Kwon Choi, Young Ho Lee, Jae Ho Yang
  • Publication number: 20210282214
    Abstract: Techniques are disclosed for determining, at a first wireless access point (AP), one or more radio resource management (RRM) input parameters. The one or more RRM input parameters are determined based on a line of sight (LOS) estimate between two wireless stations (STAs). A plurality of RRM values are generated based on the one or more RRM input parameters. A wireless connection is established between the first AP and a first STA using the RRM values.
    Type: Application
    Filed: March 6, 2020
    Publication date: September 9, 2021
    Inventors: Pooya MONAJEMI, Santosh B. KULKARNI, Benjamin J. CIZDZIEL, Vishal S. DESAI, Young Il CHOI
  • Publication number: 20210235325
    Abstract: Systems and methods herein can analyze a bandwidth restriction in a communication stream of an Access Point (AP). Then, based on the bandwidth restriction, the AP can determine a lower amount of wireless bandwidth to provide to station wireless communicating to the AP. The AP can then modify a bandwidth allocation assigned to the station based on the lower amount of wireless bandwidth.
    Type: Application
    Filed: January 24, 2020
    Publication date: July 29, 2021
    Applicant: Cisco Technology, Inc.
    Inventors: Vishal Satyendra Desai, Benjamin Jacob Cizdziel, Pooya Monajemi, Young Il Choi, Santosh Babaji Kulkarni
  • Patent number: 11071015
    Abstract: A method for access traffic steering, switching, and splitting (ATSSS) in a network and a network entity for performing the method are disclosed. When the execution of the ATSSS from the first access network to the second access network is determined, a first message requesting the SMF to confirm the connection state of the terminals for the first access network and the second access network may be transmitted to AMF. The SMF may receive information on the connection state of the terminal from the AMF.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: July 20, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Sun Mi Jun, Young Il Choi
  • Publication number: 20210211885
    Abstract: Spectrum management for coexistence of heterogeneous wireless technologies may be provided. A first Radio Frequency (RF) event metric may be received from a first service end point. The first RF event metric may comprise a time a first event occurred. A second RF event metric may be received from a second service end point. The second RF event metric may comprise a time a second event occurred. Then it may be determined that the time the first event occurred and the time the second event occurred are substantially congruent. Next, in response to determining that the time the first event occurred and the time the second event occurred are substantially congruent, the first service end point and the second service end point may be grouped in a first RF group thereby allowing frequency re-use across similar RF groups. Then different channels may be assigned to the first service end point and the second service end point.
    Type: Application
    Filed: January 7, 2020
    Publication date: July 8, 2021
    Applicant: Cisco Technology, Inc.
    Inventors: Santosh Babaji Kulkarni, Vishal Satyendra Desai, Pooya Monajemi, Young Il Choi
  • Publication number: 20210195562
    Abstract: In dense Wireless Local Area Network (WLAN) deployments, Access Points (APs) in other Extended Service Sets (ESSs) can be hidden (a first AP does not receive signals from a third AP). However, these APs in other ESSs can still interfere with communications between the third AP and the devices communicating with the first AP. To improve service to that device in that situation, the first AP needs information about the third AP in the first AP's decision making processes. In these situations, a second AP, in contact with the third AP, can share information about the third AP with the first AP so that the first AP can avoid colliding with the third AP.
    Type: Application
    Filed: December 24, 2019
    Publication date: June 24, 2021
    Applicant: Cisco Technology, Inc.
    Inventors: Pooya Monajemi, Vishal Satyendra Desai, Benjamin Jacob Cizdziel, Santosh Babaji Kulkarni, Young Il Choi
  • Publication number: 20210160198
    Abstract: Embodiments herein describe a group of APs that uses a shared radar cache to select a new channel after vacating a current channel when performing dynamic frequency selection (DFS). The group of APs can set aside memory to store status information about the DFS channels in the frequency band. For example, when one AP detects a radar event (and has to vacate a DFS channel), the AP updates an entry for that channel in the shared radar cache. The APs can also query the cache to determine a new channel after vacating its current channel. That is, the shared radar cache may store the most recent radar events occurring in a channel. In this manner, the APs can select a new channel that has little or no recent radar events, which reduces the likelihood the AP will have to vacate the new channel.
    Type: Application
    Filed: November 27, 2019
    Publication date: May 27, 2021
    Inventors: Santosh B. KULKARNI, Vishal S. DESAI, Pooya MONAJEMI, Young Il CHOI, Matthew A. SILVERMAN
  • Patent number: 11006430
    Abstract: Techniques for a machine learning event-driven radio resource management (ED-RRM) module which provides analysis of interference events in a network system are described. The network system reacts to the detection of interference in a network system and uses multiple input parameters to determine a type of device creating the interference, a predicted duration of the interference, and an ED-RRM decision on whether to activate the radio resource management (RRM) processes to alter the network transmission or block the RRM processes to conserve system resources for the network system.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: May 11, 2021
    Assignee: Cisco Technology, Inc.
    Inventors: Pooya Monajemi, Vishal S. Desai, Santosh Babaji Kulkarni, Young Il Choi
  • Patent number: 10972943
    Abstract: In one embodiment, a supervisory device for a wireless network classifies each client of a set of access points in the wireless network as either an Internet of Things (IoT) device or a non-IoT device. The supervisory device selects, for each of the access points in the set, a channel width based on the classifications of its clients. The supervisory device assigns, for each of the access points in the set, one or more wireless channels for use by that access point, based on the selected channel width for that access point. The supervisory device instructs the access points in the set to use their assigned channels to communicate with their clients.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: April 6, 2021
    Assignee: Cisco Technology, Inc.
    Inventors: Santosh Babaji Kulkarni, Vishal Satyendra Desai, Pooya Monajemi, Young Il Choi
  • Patent number: 10911167
    Abstract: Enhanced Radio Frequency (RF) management using active sensors may be provided. First, a plurality of user devices may be determined that a first active sensor is to act as an anchor for within a first portion of a Radio Frequency (RF) environment in which the plurality of user devices and the first active sensor are disposed. Next, RF environment data corresponding to the first portion of the RF environment in which the plurality of user devices are disposed may be collected. A report corresponding to the first portion of the RF environment in which the plurality of user devices are disposed may then be created based on the collected RF environment data. The report may be configured to aid in evaluating a link between at least one of the plurality of user devices and a first Access Point (AP). The created report may be provided to the first AP.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: February 2, 2021
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Vishal S. Desai, Santosh Babaji Kulkarni, Benjamin Jacob Cizdziel, Young Il Choi
  • Publication number: 20200389853
    Abstract: Presented herein are techniques for using mobile client density to compensate for variations in path loss between neighboring access points. In one example, a device (e.g., wireless controller) determines one or more mobile client density variation trends in a wireless network location and determines one or more neighbor message power variation trends between at least first and second access points within the wireless network location over a time period. The device generates one or more correlation bias factors using the mobile client density variation trends and the neighbor message power variation trends over the time period. The device determines a path loss between at least the first and second access points based on the correlation bias factor and data associated with neighbor messages sent between the first and second access points.
    Type: Application
    Filed: August 24, 2020
    Publication date: December 10, 2020
    Inventors: Vishal Satyendra Desai, Pooya Monajemi, Santosh Babaji Kulkarni, Young Il Choi
  • Publication number: 20200368245
    Abstract: The present invention relates to a pharmaceutical composition for preventing or treating lupus, containing a compound represented by a formula I, an optical isomer thereof or a pharmaceutically acceptable salt thereof as an effective component, as well as a treatment method using the compound, and use of the compound in the manufacture of a medicament for treating lupus. The pharmaceutical composition according to the present invention shows an excellent effect of preventing or treating lupus.
    Type: Application
    Filed: November 23, 2018
    Publication date: November 26, 2020
    Inventors: Young Il Choi, Nina Ha, Daekwon Bae
  • Publication number: 20200359285
    Abstract: In one embodiment, a device assigns a first radio of an access point in a wireless network to a client serving role and a second radio of the access point to a channel monitoring role. The device associates a wireless client with the first radio. The device determines that the wireless client is a low bandwidth client. The device switches the wireless client from the first radio to the second radio of the access point assigned to the channel monitoring role.
    Type: Application
    Filed: May 9, 2019
    Publication date: November 12, 2020
    Inventors: Young Il Choi, Vishal Satyendra Desai, Santosh Babaji Kulkarni, Pooya Monajemi
  • Publication number: 20200336226
    Abstract: Enhanced Radio Frequency (RF) management using active sensors may be provided. First, a plurality of user devices may be determined that a first active sensor is to act as an anchor for within a first portion of a Radio Frequency (RF) environment in which the plurality of user devices and the first active sensor are disposed. Next, RF environment data corresponding to the first portion of the RF environment in which the plurality of user devices are disposed may be collected. A report corresponding to the first portion of the RF environment in which the plurality of user devices are disposed may then be created based on the collected RF environment data. The report may be configured to aid in evaluating a link between at least one of the plurality of user devices and a first Access Point (AP). The created report may be provided to the first AP.
    Type: Application
    Filed: April 19, 2019
    Publication date: October 22, 2020
    Applicant: Cisco Technology, Inc.
    Inventors: Vishal S. Desai, Santosh Babaji Kulkarni, Benjamin Jacob Cizdziel, Young Il Choi
  • Publication number: 20200322960
    Abstract: Techniques for a machine learning event-driven radio resource management (ED-RRM) module which provides analysis of interference events in a network system are described. The network system reacts to the detection of interference in a network system and uses multiple input parameters to determine a type of device creating the interference, a predicted duration of the interference, and an ED-RRM decision on whether to activate the radio resource management (RRM) processes to alter the network transmission or block the RRM processes to conserve system resources for the network system.
    Type: Application
    Filed: April 4, 2019
    Publication date: October 8, 2020
    Inventors: Pooya MONAJEMI, Vishal S. DESAI, Santosh Babaji KULKARNI, Young Il CHOI
  • Patent number: 10791524
    Abstract: Presented herein are techniques for using mobile client density to compensate for variations in path loss between neighboring access points. In one example, a device (e.g., wireless controller) determines one or more mobile client density variation trends in a wireless network location and determines one or more neighbor message power variation trends between at least first and second access points within the wireless network location. The device generates one or more correlation bias factors using the mobile client density variation trends and the neighbor message power variation trends. The device determines a path loss between at least the first and second access points based on the correlation bias factor and data associated with neighbor messages sent between the first and second access points.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: September 29, 2020
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Vishal Satyendra Desai, Pooya Monajemi, Santosh Babaji Kulkarni, Young Il Choi
  • Publication number: 20200304378
    Abstract: Techniques for dynamic RF site configuration are provided. Historical association data is collected from a plurality of access points in a physical environment, and a machine learning model is trained to predict future association events, based on the historical association data. Current association data is then collected from the plurality of access points, and at least one predicted association event is generated by processing the current association data using the trained machine learning model. The plurality of access points is allocated to a plurality of radio frequency (RF) sites based on the at least one predicted association event. Finally, at least one of the plurality of RF sites is configured based on the predicted association event.
    Type: Application
    Filed: March 19, 2019
    Publication date: September 24, 2020
    Inventors: Young Il CHOI, Vishal S. DESAI, Santosh Babaji KULKARNI, Pooya MONAJEMI