Patents by Inventor Yun-Sung Kim

Yun-Sung Kim 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: 10812248
    Abstract: In accordance with the disclosure, when a base station is serving at least a threshold quantity of devices and the base station is allocating at least a threshold quantity of its air-interface resources per unit time, the base station will disable carrier-aggregation service, so as to help minimize or eliminate instances where the base station's carriers would be used as secondary component carriers for carrier-aggregation service and would not support MU-MIMO service. By disabling carrier-aggregation service in that scenario, air-interface resources that might otherwise have been used for secondary-component-carrier transmission without MU-MIMO service may then instead be available for use with MU-MIMO service, which may help to improve spectral efficiency.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: October 20, 2020
    Assignee: Sprint Spectrum L.P.
    Inventors: Yun Sung Kim, Jason P. Sigg, Sanghoon Sung, Pinalkumari Tailor
  • Patent number: 10805831
    Abstract: A method and system to help control CoMP service in a V-RAN arrangement. The load on a cell site's fronthaul network interface between the cell site's RRH and the cell site's BBU is determined. And in response to detecting that the fronthaul load is threshold high, a limit will be imposed on application of CoMP service involving the cell site. For example, in response to detecting that the cell site's fronthaul network interface is threshold highly loaded, (i) the cell site could be made to use decentralized joint processing rather than centralized joint processing, (ii) a lower coverage strength threshold could be imposed as a basis to trigger CoMP service involving the cell site, and/or (iii) the quantity of uplink communication that is subject to CoMP service involving the cell site could be limited.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: October 13, 2020
    Assignee: Sprint Spectrum L.P.
    Inventors: Sanghoon Sung, Yu Wang, Yun Sung Kim, Jasinder P. Singh
  • Patent number: 10798660
    Abstract: Device-to-device (D2D) transmissions by a wireless device may interfere with base station reception of other signals. To mitigate this interference, the wireless device estimates the path loss between itself and the base station. The path loss and the current D2D transmission power level are used to estimate the amount of interference the base station is experiencing as a result of the D2D transmissions from the wireless device. Based on the estimated interference experienced by the base station, the wireless device increases the robustness of the MCS being used and decreases the transmission power level by a corresponding amount. By decreasing the D2D transmission power level, less interference will be experienced by the base station. By increasing the robustness of the MCS, the impact of the reduced D2D transmission power level is mitigated.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: October 6, 2020
    Assignee: Sprint Spectrum L.P.
    Inventors: Sanghoon Sung, Udit Thakore, Hau Tran, Yun Sung Kim
  • Patent number: 10797762
    Abstract: Beamforming in massive MIMO networks includes monitoring a signal condition such as pathloss of wireless devices and, based thereon, selecting a type of reference signal for the wireless devices, the type selected from among a non-precoded reference signal, a beamformed reference signal, or a standard reference signal. Further, an MCS of the wireless devices is monitored and, based thereon, the type of reference signal is adjusted.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: October 6, 2020
    Assignee: Sprint Spectrum L.P.
    Inventors: Sanghoon Sung, Yun Sung Kim, Minho Song, Sandeep Mangrulkar
  • Patent number: 10791487
    Abstract: A method for controlling handover of a user equipment device (UE) between (i) a first cell site that provides dual-connectivity service on a first radio access technology (RAT) and a second RAT and (ii) a second cell site that provides standalone first-RAT service, wherein the handover includes transitioning the UE from source first-RAT service to target first-RAT service. The method includes setting a handover threshold to use as a basis to evaluate whether target first-RAT coverage detected by the UE is sufficiently stronger than source first-RAT coverage detected by the UE, where setting the handover threshold includes setting the handover threshold to a value selected based on whether the UE has detected that second-RAT coverage of the first cell site meets a defined threshold measurement threshold. Further, the method includes applying the set handover threshold as a basis to control whether to invoke the handover of the UE.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: September 29, 2020
    Assignee: Sprint Spectrum L.P.
    Inventors: Sanghoon Sung, Yun Sung Kim, Hau Tran, Sandeep Mangrulkar
  • Patent number: 10779282
    Abstract: A wireless access point serve wireless User Equipment (UEs) using Multiple User Multiple Input Multiple Output (MU-MIMO). In the wireless access point, radio circuitry wirelessly receives network signaling from the UEs. Control circuitry processes the network signaling and determines initial power allocations to the UEs and initial MU-MIMO groups of the UEs. The control circuitry processes the initial power allocations and the initial MU-MIMO groups and determines new power allocations and new MU-MIMO groups. The radio circuitry wirelessly transmits MU-MIMO signals to the UEs in the new MU-MIMO groups using the new power allocations.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: September 15, 2020
    Assignee: Sprint Communications Company L.P.
    Inventors: Sanghoon Sung, Yun Sung Kim, Min Ho Song, Tri Q. Duong
  • Patent number: 10778317
    Abstract: System and methods are provided for performing intra-cell beam switching based on customizable parameters for event detection. In embodiments, base station is configured with customized physical layer parameters, which the base station broadcasts. The base station uses reports of physical layer parameters of a beam, received from a user device, for example, to determine whether events have occurred that indicate beam switching should be performed. Based on the determinations, the base station may perform beam switching of the user device, in various embodiments.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: September 15, 2020
    Assignee: Sprint Communications Company L.P.
    Inventors: Minho Song, Hadeel Fayad, Sanghoon Sung, Yun Sung Kim
  • Publication number: 20200194827
    Abstract: The present disclosure relates to a sulfide-based solid electrolyte doped with an alkaline earth metal for improving the ionic conductivity thereof and a method of manufacturing the same. The sulfide-based solid electrolyte is represented by Chemical Formula 1 below. The sulfide-based solid electrolyte exhibits high voltage stability and ionic conductivity. Consequently, it is possible to obtain an all-solid-state battery having a large capacity and stable behavior using the sulfide-based solid electrolyte. Li6-2xMexPS5Ha ??[Chemical Formula 1] wherein Me is an alkaline earth metal element, Ha is a halogen element, and 0<x?0.5.
    Type: Application
    Filed: October 25, 2019
    Publication date: June 18, 2020
    Applicant: Industry-University Cooperation Foundation Hanyang University
    Inventors: Ju Yeong SEONG, In Woo SONG, Hong Seok MIN, Yong Jun JANG, Yun Sung KIM, Dong Wook SHIN, Chan Hwi PARK, Sang Soo LEE, Kyu Beom KIM
  • Publication number: 20200185765
    Abstract: A sulfide-based solid electrolyte which is appropriately usable for a negative electrode of an all-solid-state battery and a method of manufacturing the same, may include a lithium element (Li), a sulfur element (S), a phosphorus element (P), and a halogen element (X), wherein the halogen element (X) is selected from the group consisting of a chlorine element (Cl), a bromine element (Br), an iodine element (I), and combinations thereof, and the molar ratio (S/P) of the sulfur element (S) to the phosphorus element (P) is 5 to 7.
    Type: Application
    Filed: June 4, 2019
    Publication date: June 11, 2020
    Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: YONG JUN JANG, IN WOO SONG, YUN SUNG KIM, JU YEONG SEONG
  • Publication number: 20200185778
    Abstract: A method of manufacturing an all-solid-state battery includes preparing a solid electrolyte layer, providing lithium metal to the solid electrolyte layer to prepare a stack, and radiating ultrasonic waves or sound waves to the stack. The method provides an all-solid-state battery with a stable interface between an anode formed of lithium metal and a solid electrolyte layer.
    Type: Application
    Filed: May 2, 2019
    Publication date: June 11, 2020
    Inventors: Jae Min LIM, Sang Heon LEE, Yong Seok CHOI, Yun Sung KIM, Hong Seok MIN
  • Publication number: 20200176814
    Abstract: A method of manufacturing a high-ion conductive sulfide-based solid electrolyte using dissolution-precipitation includes preparing a composite solvent including a first solvent including a cyano group and a second solvent having a polarity index of less than 4, introducing a raw material including lithium sulfide (Li2S) and phosphorus pentasulfide (P2S5) into the composite solvent, and stirring the raw material to obtain a sulfide precipitate.
    Type: Application
    Filed: October 23, 2019
    Publication date: June 4, 2020
    Inventors: Ju Yeong SEONG, In Woo SONG, Hong Seok MIN, Yong Jun JANG, Yun Sung KIM, Dong Wook SHIN, Sun Ho CHOI, Ji U ANN, Ji Yae DO, Seung Woo LIM
  • Publication number: 20200153036
    Abstract: Disclosed are a five-component (Li-M-P—S—X) sulfide-based solid electrolyte synthesized using a wet process and a composition for manufacturing the same. The sulfide-based solid electrolyte is expressed as chemical formula 1 of A(Li2S).B(P2S5).C(MX4). A, B and C are respectively moles of Li2S, P2S5 and MX4, and satisfy 60<A<100, 0<B<40, 0<C?30 and A+B+C=100, M may include at least one selected from the group consisting of Ge, Si, Sb, Sn and combinations thereof, and X may include at least one selected from the group consisting of Cl, Br, I and combinations thereof.
    Type: Application
    Filed: May 30, 2019
    Publication date: May 14, 2020
    Applicants: Hyundai Motor Company, KIA Motors Corporation, Industry-University Cooperation Foundation Hanyang University
    Inventors: Ju Yeong Seong, In Woo Song, Hong Seok Min, Yong Jun Jang, Yun Sung Kim, Young Jin Nam, Sung Hoo Jung, Dae Yang Oh, Yoon Seok Jung
  • Patent number: 10629962
    Abstract: A vehicular battery module that is capable of securing the stability of a vehicle by inducing self-discharge of a battery cell when the battery is overcharged includes: a plurality of stacked battery cells, each of which includes a battery pouch and electrode terminals extending outwards from the battery pouch, and a variable-resistor disposed between the electrode terminals of the one-side battery pouch and the other-side battery pouch so as to electrically connect the two electrode terminals to each other.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: April 21, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Pil Gun Oh, Yong Sub Yoon, Sang Mo Kim, Yun Sung Kim, Hong Seok Min, Oh Min Kwon
  • Patent number: 10548056
    Abstract: A method for controlling handover of a user equipment device (UE) between (i) a first cell site that provides dual-connectivity service on a first radio access technology (RAT) and a second RAT and (ii) a second cell site that provides standalone first-RAT service, wherein the handover includes transitioning the UE from source first-RAT service to target first-RAT service. The method includes setting a handover threshold to use as a basis to evaluate whether target first-RAT coverage detected by the UE is sufficiently stronger than source first-RAT coverage detected by the UE, where setting the handover threshold includes setting the handover threshold to a value selected based on whether the UE has detected that second-RAT coverage of the first cell site meets a defined threshold measurement threshold. Further, the method includes applying the set handover threshold as a basis to control whether to invoke the handover of the UE.
    Type: Grant
    Filed: February 8, 2019
    Date of Patent: January 28, 2020
    Assignee: Sprint Spectrum L.P.
    Inventors: Sanghoon Sung, Yun Sung Kim, Hau Tran, Sandeep Mangrulkar
  • Patent number: 10512037
    Abstract: In an wireless communication system, base stations will be set to prioritize serving one type of user equipment device (UE) over another type of UE, and each base station's respective prioritization will be conveyed to UEs to facilitate base station selection. That way, when a UE faces a choice of whether to connect with one base station or another, the UE could determine which base station gives higher priority to the UE's type and could connect with that base station, even if the UE detects stronger coverage of the other base station. And if the UE finds itself in coverage of a base station that gives lower priority to the UE's type than to another UE type, the UE could still connect with that base station unless the UE finds another base station that gives higher priority to the UE's type.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: December 17, 2019
    Assignee: Sprint Spectrum L.P.
    Inventors: Sanghoon Sung, Yun Sung Kim, Minho Song, Hau Tran
  • Patent number: 10505687
    Abstract: A method and system to help provide efficient configuration of reference signal transmission in a wireless communication system. A processing system evaluates handover history between sectors in the system, considering the reference signal configurations of the sectors between which handovers have occurred, as a basis to determine what reference signal configurations to implement in one or more sectors. And the processing system may then cause the sectors to implement the determined reference signal configurations. Further, the processing system may iteratively repeat this process, to help optimize reference signal configurations throughout the region.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: December 10, 2019
    Assignee: Sprint Spectrum L.P.
    Inventors: Pinalkumari Tailor, Yun Sung Kim, Dennis Canoy, Sandeep Mangrulkar
  • Patent number: 10491352
    Abstract: A method and system to help provide efficient configuration of reference signal transmission in a wireless communication system. A processing system evaluates the configurations of various sectors within a region, taking into account distances between the sectors and azimuths of the sectors, to determine for at least one sector an aggregate interference score with respect to one or more nearby sectors having the same reference signal as the sector. And based on the aggregate interference score, the processing system may then reconfigure reference signal transmission of the sector, such as by changing the reference signal configuration of the sector for instance. Further, the processing system may iteratively repeat this process for numerous sectors within a region, to help optimize reference signal configurations throughout the region.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: November 26, 2019
    Assignee: Sprint Spectrum L.P.
    Inventors: Pinalkumari Tailor, Yun Sung Kim, Dennis Canoy, Sandeep Mangrulkar
  • Patent number: 10433220
    Abstract: Access nodes in a network are configured to periodically measure cell loads and exchange cell load measurements with neighbors. At each access node, cell loads are compared with load thresholds, and with neighboring loads, to determine whether or not load balancing operations should be triggered. Load balancing operations include reducing or increasing an effective coverage area of one or both of the congested cell and the neighbor cell by adjusting a handover threshold parameter, such as a threshold signal level. Adjusting thresholds at a congested cell triggers more handovers from the congested cell to the non-congested cell. Similarly, adjusting thresholds at a non-congested cell prevents handovers from the non-congested cell to the congested cell.
    Type: Grant
    Filed: August 19, 2016
    Date of Patent: October 1, 2019
    Assignee: Sprint Spectrum L.P.
    Inventors: Yun Sung Kim, Pinal Tailor, Sanghoon Sung, Tri Duong
  • Patent number: 10432453
    Abstract: A method and corresponding system for configuring an eNodeB for improved circuit-switched-fallback (CSFB) service. The method includes detecting that, during past CSFB call setup for UEs served by the eNodeB, UEs reported as a strongest fallback coverage area a fallback coverage area that is not included in the eNodeB's CSFB-candidate data. And the method includes responsively (i) determining, based on location information and based on an identifier of the reported fallback coverage area, a node of the fallback network that the eNodeB's network can contact to facilitate CSFB call setup in the reported fallback coverage area, and (ii) adding to the CSFB-candidate data a record of the reported coverage area in association with a node identifier of the determined node, the added record being thereafter useable by the eNodeB to facilitate CSFB call setup in the reported fallback coverage area for a UE served by the eNodeB.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: October 1, 2019
    Assignee: Sprint Spectrum L.P.
    Inventors: Sandeep Mangrulkar, Yun Sung Kim, Tri Duong, Sanghoon Sung
  • Publication number: 20190288286
    Abstract: The present disclosure provides an all-solid battery for a vehicle, which includes a cathode, a solid electrolyte layer disposed on the cathode, and an anode disposed on the solid electrolyte layer. The solid electrolyte layer includes a solid electrolyte and a ceramic which is a nonconductor.
    Type: Application
    Filed: November 2, 2018
    Publication date: September 19, 2019
    Inventors: Sang Heon LEE, Sang Mo KIM, Yun Sung KIM, Oh Min KWON, Jae Min LIM