Patents by Inventor Ki-Ho Lee

Ki-Ho Lee 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: 9369194
    Abstract: Described embodiments provide a method for processing an uplink signal in a radio unit. A first uplink signal may be received directly from user equipment. The received uplink signal may be delayed using uplink delay information. A second uplink signal may be received indirectly from user equipment through at least one repeater connected to the radio unit. The delayed first uplink signal and the second uplink signal may be combined and transmitted to a digital unit.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: June 14, 2016
    Assignee: KT CORPORATION
    Inventors: Ki-Ho Lee, Yong-Gyoo Lee, Yung-Ha Ji
  • Patent number: 9357505
    Abstract: Described embodiments provide a digital unit for controlling a plurality of radio units to transmit a signal to user equipment. The digital unit may determine whether user equipment is located at an overlapping service area of a first radio unit and a second radio unit and control the first radio unit to transmit a signal to the user equipment using the first antenna and control the second radio unit to transmit the same signal to the user equipment using the second antenna when the user equipment is located in the overlapping service area. A transmission pattern of the first antenna of the first radio unit may be different from a transmission pattern of the second antenna of the second radio unit.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: May 31, 2016
    Assignee: KT CORPORATION
    Inventors: Ki-Ho Lee, Yong-Gyoo Lee, Yung-Ha Ji
  • Patent number: 9315507
    Abstract: The present invention relates to novel compounds as HIF-1? inhibitors, manufacturing process thereof, and a pharmaceutical compositions. The compounds according to the present invention having inhibition activity against HIF-1?, can be used as a therapeutic prevention and/or treatment for various solid cancers such as colon cancer, liver cancer, stomach cancer and breast cancer. Also, the compounds according to the present invention are useful in the treatment of diabetic retinopathy and rheumatoid arthritis, which are aggravated by HIF-1?-mediated VEGFA expression.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: April 19, 2016
    Assignees: Dongguk University Industry-Academic Cooperation Foundation, Korea Research Institute of Bioscience and Biotechnology
    Inventors: Kyeong Lee, Mi-Sun Won, Hwan-Mook Kim, Song-Kyu Park, Ki-Ho Lee, Chang-Woo Lee, Bo-Kyung Kim, Hyun-Seung Ban, Kyung-Sook Chung, Naik Ravi
  • Patent number: 9288708
    Abstract: A system may deliver a push message to user equipment. The system may include a push notification server and a mobile communication core network. The push notification server may be configured to create and transmit a push message when a certain data is updated. The mobile communication core network may be configured to receive the push message from the push notification server, determine whether a user equipment associated with the push message is connected to a wireless local area network (WLAN) access network, and transmit the push message to the user equipment through at least one of a mobile communication radio access network and the WLAN access network based on the determination.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: March 15, 2016
    Assignee: KT CORPORATION
    Inventors: Ki-Ho Lee, Jong-Ho Park
  • Patent number: 9215614
    Abstract: The disclosure is related to controlling an operation bandwidth for a femtocell based on femtocell interference to a macrocell in order to minimize femtocell interference. A femtocell base station may include a measurement unit, a transmitting unit, and a control unit. The measurement unit may be configured to measure an interference amount of a macrocell adjacent to the femtocell base station. The transmitting unit may be configured to transmit the measured interference amount to a system. The control unit may be configured to i) accept an allocated operation bandwidth by the system and ii) control transmission and reception of signals with the allocated operation bandwidth. The operation bandwidth may be adjustable by the system based on the measured interference amount.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: December 15, 2015
    Assignee: KT CORPORATION
    Inventors: Ki-Ho Lee, Yong-Gyoo Lee, Yung-Ha Ji
  • Publication number: 20150350922
    Abstract: Cloud communication center system and method for processing data in a cloud communication system. An apparatus for supporting a cloud communication system may include at least one remote unit and a centralized unit. The at least one remote unit may be configured to process one of radio signals received from a user equipment or radio signals to be transmitted to a user equipment according to at least one sub-layer of an open system interconnection reference model. The centralized unit may be configured to receive the processed signal from the remote unit and to process the received signal based on the remaining sub-layers of the open system interconnection reference model.
    Type: Application
    Filed: August 10, 2015
    Publication date: December 3, 2015
    Applicant: KT CORPORATION
    Inventors: Ki-Ho LEE, Jong-Ho PARK
  • Patent number: 9172988
    Abstract: Provided is an analog front end of a digital TV, a digital TV system having the same, and a method of operating the same. The analog front end includes: a first selection circuit which selectively outputs differential sound intermediate frequency signals or differential TV broadcast signals in response to a first selection signal; a second selection circuit which outputs a clock signal among a plurality of clock signals having a different sampling frequencies, in response to a second selection signal; and an analog-to-digital converter which converts output signals output from the first selection circuit to a digital code, according to a sampling frequency of a clock signal output from the second selection circuit.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: October 27, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang Ho Kim, Ho Jin Park, Hyung Woan Koo, Ki Ho Lee
  • Publication number: 20150305036
    Abstract: A mobile communication system for providing carrier aggregation between digital units, and a method for processing a signal in the system are provided. The mobile communication system includes: a plurality of digital units connected to a core system and configured to process a radio digital signal; a blade server connected to at least two or more digital units and configured to perform resource allocation on signals processed by the connected digital units; and a plurality of radio units physically separated from the digital units, configured to convert and amplify digital signals received from the digital units, and transmit the same to a terminal, and configured to receive a signal transmitted from the terminal and transmit the received signal to the digital units. In the system, a mobile communication service is provided to the terminal by using carrier aggregation between radio units respectively connected to at least two or more digital units and using different frequencies.
    Type: Application
    Filed: September 2, 2013
    Publication date: October 22, 2015
    Applicant: KT CORPORATION
    Inventors: Ki-Ho LEE, Yong-Gyoo LEE, Yung-Ha JI
  • Publication number: 20150304881
    Abstract: Provided are a mobile communication system, a digital unit, and a method of establishing a joint transmission area in the system. When the digital unit determines that a terminal is located in a joint transmission area based on signal strength values received from two of radio units and transmission powers of the two radio units, the digital unit adjusts the joint transmission area depending on the load on the network including the two radio units belong in order to allow the two radio units to perform a joint transmission function to send at least one of the same signal and a spatiotemporally coded signal of the same data to the terminal.
    Type: Application
    Filed: September 2, 2013
    Publication date: October 22, 2015
    Applicant: KT CORPORATION
    Inventors: Ki-Ho LEE, Yong-Gyoo LEE, Yung-Ha JI
  • Publication number: 20150289278
    Abstract: A resource management apparatus for managing a plurality of base stations (BSs) includes a load information management unit configured to manage load information of the plurality of BSs, a neighbor BS list management unit configured to manage a neighbor BS list of each BS, and a resource allocation unit. The resource allocation unit is configured to vary quantity of resources allocated to a target BS from among the plurality of BSs based on load information of the target BS and at least one neighbor BS of the target BS, upon reception of a resource allocation request from the target BS.
    Type: Application
    Filed: July 26, 2013
    Publication date: October 8, 2015
    Inventors: Ki-Ho Lee, Yong-Gyoo Lee, Yung-Ha Ji
  • Publication number: 20150282164
    Abstract: The present disclosure relates to resource allocation method and apparatus. The resource allocation method includes monitoring resource information of a plurality of base stations including a first base station and a second base station, receiving a resource allocation request from a first terminal that is located in a boundary region and connected to the first base station, and checking whether a second terminal using a voice service is located in the boundary region. When the second terminal is located in the boundary region, resources are allocated to the first terminal based on resources allocated to the second terminal. The boundary region is an overlapped region of cells of the first base station and the second base station.
    Type: Application
    Filed: July 18, 2013
    Publication date: October 1, 2015
    Inventors: Ki-Ho Lee, Yong-Gyoo Lee, Yung-Ha Ji
  • Publication number: 20150282100
    Abstract: A signal processing system, a digital signal processing device (or a digital unit), and a method of controlling transmission power in the system are provided. The digital unit allocates relatively high transmission power to a terminal located in a boundary area of adjacent cells served by two radio units, is higher than transmission power for transmitting data to a terminal located at about a central area of each cell, rather than the boundary cell of adjacent cells.
    Type: Application
    Filed: September 2, 2013
    Publication date: October 1, 2015
    Inventors: Ki-Ho Lee, Yong-Gyoo Lee, Yung-Ha Ji
  • Publication number: 20150246874
    Abstract: The present disclosure provides a compound represented by Formula (I) and a pharmaceutically acceptable salt which are effective as a dopamine reuptake inhibitor and a method of using the compound: wherein X is independently halo, alkyl, alkoxy or nitro; m is 0, 1, 2, 3 or 4; n is 1 or 2; R1 and R2 are independently H— or alkyl; R3 is H—, alkyl or aralkyl; and R4 is H— or aryl.
    Type: Application
    Filed: February 27, 2015
    Publication date: September 3, 2015
    Inventors: Young-Soon KANG, Jin-Yong CHUNG, Cheol-Young MAENG, Han-Ju YI, Ki-Ho LEE, Joon HEO, Eun-Hee CHAE, Yu-Jin SHIN
  • Patent number: 9066365
    Abstract: A method of a relay node transmitting data is provided. The method includes receiving scheduling information about a backhaul link and data from a base station; receiving channel information about an access link from relay node user equipment; performing scheduling on the access link based on the scheduling information about the backhaul link and the channel information about the access link; and relaying the data to the relay node user equipment according to a result of the scheduling. The backhaul link means a link between the base station and the relay node, and the access link means a link between the relay node and the relay node user equipment.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: June 23, 2015
    Assignees: LG ELECTRONICS INC., SOONGSIL UNIVERSITY RESEARCH-CONSORTIUM TECHNO-PARK OFFICE OF RESEARCH & UNIVERSITY-INDUSTRY COOPERATION
    Inventors: Hak Seong Kim, Yo An Shin, Ki Ho Lee, Ki Jun Kim, San Hae Kim
  • Patent number: 9055503
    Abstract: Described embodiments provide a method of effectively selecting a target cell to hand over user equipment from a LTE network to a non-LTE network when the user equipment requests a CS service. A LTE cell may determine a CS fallback hysteresis parameter in advance. The LTE cell may receive signal quality measurements of at least two candidate non-LTE cells from the user equipment. The LTE cell may select one target cell among the at least two candidate non-LTE cells based on the CS fallback hysteresis parameter and the received signal quality measurements of the at least two candidate non-LTE cells.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: June 9, 2015
    Assignee: KT CORPORATION
    Inventors: Ki-Ho Lee, Yong-Gyoo Lee, Yung-Ha Ji
  • Patent number: 9014146
    Abstract: Described embodiments provide a method and apparatus for redirecting user equipment from a current serving cell of a first network to a corresponding target cell of a second network in a heterogeneous overlay network environment. A current serving base station of the first network may receive signal quality measurements from user equipment coupled to the current serving cell of the first network. Based on the received signal quality measurements, the current serving base station may determine whether signal quality of the user equipment is lower than predetermined reference quality based on at least one of the received signal quality measurements. When the signal quality of the user equipment is lower than the predetermined reference quality, the current serving base station may redirect the user equipment from the current serving cell of the first network to the corresponding target cell of the second network.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: April 21, 2015
    Assignee: KT Corporation
    Inventors: Ki-Ho Lee, Yong-Gyoo Lee, Yung-Ha Ji
  • Patent number: 9008101
    Abstract: The disclosure is related to performing a packet scheduling in a wireless communication network. Quality of service (QoS) information associated with user equipment may be obtained in the wireless communication network. A channel status associated with the user equipment may be estimated in the wireless communication network. A scheduling interval may be determined based on the QoS information and the channel status.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: April 14, 2015
    Assignee: KT Corporation
    Inventors: Ki-Ho Lee, Yong-Gyoo Lee, Yung-Ha Ji
  • Publication number: 20150092685
    Abstract: A signal processing system and a signal processing method are provided.
    Type: Application
    Filed: October 31, 2012
    Publication date: April 2, 2015
    Applicant: KT Corporation
    Inventors: Ki-Ho Lee, Yong-Gyoo Lee, Yung-Ha Ji
  • Patent number: 8975241
    Abstract: There is provided a composition for preventing and treating obesity including high water-soluble ?-cyclodextrin derivatives as an effective component. Specifically, the composition including the high water-soluble ?-cyclodextrin derivatives, especially, 2-hydroxypropyl-?-cyclodextrin (HP-?-CD, HPBCD) has effects on suppressing an increase in body weight induced by a high fat diet, suppressing appetite through decreasing an amount of dietary intake, decreasing body fat, decreasing liver weight, and significantly decreasing a sharp increase of blood sugar induced by intaking glucose and maltose on an empty stomach so that it can be useful for preventing and treating obesity, preventing and treating various diseases induced by obesity, and suppressing a sharp increase of blood sugar after dinner.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: March 10, 2015
    Assignee: Song Ho Biomed Co., Ltd.
    Inventors: Gyoon-Hee Han, Yong Seok Choi, Sang-Bae Han, Jong-Ho Lee, Hwan-Mook Kim, Song-Kyu Park, Ki-Ho Lee, Jong-Soon Kang, Ki-Hoon Lee, Chang-Woo Lee
  • Publication number: 20150055642
    Abstract: A system may deliver a push message to user equipment. The system may include a push notification server and a mobile communication core network. The push notification server may be configured to create and transmit a push message when a certain data is updated. The mobile communication core network may be configured to receive the push message from the push notification server, determine whether a user equipment associated with the push message is connected to a wireless local area network (WLAN) access network, and transmit the push message to the user equipment through at least one of a mobile communication radio access network and the WLAN access network based on the determination.
    Type: Application
    Filed: October 30, 2014
    Publication date: February 26, 2015
    Inventors: Ki-Ho LEE, Jong-Ho PARK