Patents by Inventor Han Gyu Cho

Han Gyu Cho 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).

  • METHOD AND APPARATUS FOR A SCANNING IN WLAN
    Publication number: 20140064128
    Abstract: The methods and an apparatuses for scanning in WLAN are disclosed. A method of a scanning of a station (STA) may include monitoring a channel during a probedelay based on a MAC sublayer management entity (MLME)-SCAN.request primitive indicating an active scanning for a target Access Point (AP), receiving a frame including a channel congestion indicator from an AP during the probedelay, generating a MLME-SCAN.change request primitive to request a change of a scanning type parameter included in the MLME-SCAN.request primitive when the channel congestion indicator indicates that the channel is congested, generating a MLME-SCAN.change confirm primitive to confirm the change of the scanning type parameter included in the MLME-SCAN.request primitive as a response of the MLME-SCAN.change request primitive, and performing a passive scanning for the target AP based on the MLME-SCAN.change confirm primitive.
    Type: Application
    Filed: September 6, 2013
    Publication date: March 6, 2014
    Applicant: LG ELECTRONICS INC.
    Inventors: Gi Won PARK, Ki Seon RYU, Jin Sam KWAK, Han Gyu CHO
  • Method and apparatus for transmitting reference signal in wireless communication system
    Patent number: 8660084
    Abstract: A method and apparatus of transmitting a reference signal in a wireless communication system is provided. Demodulation Reference Signals (DMRSs) for a plurality of respective antennas is generated. The DMRSs are mapped to a resource region, and transmitted through the respective corresponding antennas. The DMRSs are multiplexed using at least one of frequency division multiplexing (FDM), code division multiplexing (CDM), and time division multiplexing (TDM) methods and mapped in the resource region. Also, a position of an orthogonal frequency division multiplexing (OFDM) symbol to which the DMRSs are mapped in the resource region is an OFDM symbol to which a physical downlink control channel (PDCCH) and a legacy cell-specific reference signal (CRS) are not mapped.
    Type: Grant
    Filed: April 9, 2010
    Date of Patent: February 25, 2014
    Assignee: LG Electronics Inc.
    Inventors: Min Seok Noh, Han Gyu Cho, Jae Hoon Chung, Moon Il Lee, Yeong Hyeon Kwon
  • UL FFR-based signal transmission method
    Patent number: 8660566
    Abstract: The present invention relates to a method for transmitting control information in a multi-cell based mobile communication system, the method comprising: extracting information on a fractional frequency reuse (FFR) pattern that represents whether terminal transmission power for a plurality of frequency resource groups is boosted to apply uplink fractional frequency reuse (UL FFR) to a particular cell; and broadcasting power control information that is configured separately by each of the plurality of frequency resource groups based on the extracted FFR pattern.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: February 25, 2014
    Assignee: LG Electronics Inc.
    Inventors: Han Gyu Cho, Wook Bong Lee, Dong Cheol Kim
  • Method for transmitting and receiving paging information in a broadband wireless access system
    Patent number: 8660064
    Abstract: A method for efficiently transmitting and receiving a paging message and system information from and in a mobile station of a broadband wireless access system is disclosed. A method for receiving a paging message in a mobile station comprise receiving paging information from a serving base station, the paging information including paging sub group identifier (paging sub_group ID) indicating a paging sub group to which the mobile station belongs; and receiving the paging message for a predetermined paging interval of the paging sub group, wherein the paging sub group is determined separately from a paging group and a geographical location determining the paging group, and is maintained while the mobile station is being operated in an idle mode.
    Type: Grant
    Filed: June 3, 2009
    Date of Patent: February 25, 2014
    Assignee: LG Electronics Inc.
    Inventors: Eun Jong Lee, Doo-Hyun Sung, Jin-Soo Choi, Han Gyu Cho, Jong Young Han, Kyu Jin Park, Hyung Ho Park, Jae Hoon Chung
  • Apparatus and method for performing communication using H-FDD frame structure in mobile communication system
    Patent number: 8654688
    Abstract: Disclosed are an apparatus and a method for performing communication using a half-frequency division duplex (H-FDD) frame structure in a mobile communication system. A user equipment for performing communication using an H-FDD frame structure according to the present invention comprises an RF unit in which each user equipment group receives and transmits signals using the H-FDD frame structure wherein the order of the downlink zone and uplink zone are reversely allocated to each of the groups. The downlink zone and uplink zone, which are allocated to each of the user equipment groups in the H-FDD frame structure, include a sub-frame wherein one or more symbols are allocated to idle time slots or are punctured. Each of the user equipment groups can receive and transmit signals using symbols that are not allocated to the idle time slots or are not punctured in the sub-frame.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: February 18, 2014
    Assignee: LG Electronics Inc.
    Inventors: Dong Guk Lim, Jin Soo Choi, Han Gyu Cho, Jin Sam Kwak, Yeong Hyeon Kwon, Sung Ho Moon
  • Method and apparatus for transmitting data performed by at least one base station in wireless communication system
    Patent number: 8654625
    Abstract: A method and apparatus for transmitting data performed by at least one base station (BS) in a wireless communication system is provided. First signals are respectively mapped to a first Orthgonal Frequency Division Multiplexing (OFDM) symbol of a first BS and a second BS, and are transmitted. A second signal, having a ? shifted phase of the first signal, is mappped to a second OFDM symbol, and is transmitted by the first BS. The respective first signals and the second signal are transmitted in a same subcarrier in a frequency domain.
    Type: Grant
    Filed: February 1, 2010
    Date of Patent: February 18, 2014
    Assignee: LG Electronics Inc.
    Inventors: Yeong Hyeon Kwon, Dong Guk Lim, Han Gyu Cho, Jae Hoon Chung
  • Apparatus and method for controlling transmission power in a wireless communication system using fractional frequency reuse
    Patent number: 8644838
    Abstract: A method for acquiring FFR power pattern of Frequency Partitions (FPs) at a mobile station (MS) in a wireless communication system using Fractional Frequency Reuse (FFR) is disclosed. The method includes receiving a preamble from a base station (BS); and acquiring a FFR power pattern for a reuse-1 partition and reuse-N partitions using the received preamble, wherein the FFR power pattern is determined based on a segment identifier (ID), the reuse-N partitions include N frequency partitions, each frequency partition has a power level with a range of FP1_power level to FPN_power level, a power-boosted FP in the reuse-N partitions is a partition whose power level is the FP1_power level.
    Type: Grant
    Filed: November 11, 2010
    Date of Patent: February 4, 2014
    Assignee: LG Electronics Inc.
    Inventors: Wook Bong Lee, Han Gyu Cho, Ja Ho Koo, Bin Chul Ihm, Jin Soo Choi
  • Method for performing ranging in wireless communication system supporting two wireless communication schemes
    Patent number: 8638777
    Abstract: A method for performing ranging is disclosed. The method for performing ranging in a wireless communication system which simultaneously supports a legacy system and a new system includes a method for additionally allocating a ranging channel to a zone other than a legacy zone and a method for re-using a legacy ranging channel within the legacy zone. When the legacy ranging channel is re-used, ranging codes may be shared by a legacy mobile station and a new system mobile station or may be separated on a ranging code domain. Limited radio resources can be effectively employed by re-using the legacy ranging channel.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: January 28, 2014
    Assignee: LG Electronics Inc.
    Inventors: Kyu Jin Park, Jae Hoon Chung, Han Gyu Cho, Eun Jong Lee, Doo Hyun Sung
  • METHOD AND DEVICE FOR ALLOCATING A BROADCAST CHANNEL IN A WIRELESS MOBILE COMMUNICATION SYSTEM
    Publication number: 20140016605
    Abstract: A method for receiving a superframe header at a mobile station in a wireless mobile communication system is disclosed. The method comprises receiving a sub-frame including the superframe header and a first data channel and decoding the received superframe header. Herein, the superframe header is located within a predetermined physical frequency band and the pre-determined physical frequency band includes a synchronization channel.
    Type: Application
    Filed: September 18, 2013
    Publication date: January 16, 2014
    Applicant: LG ELECTRONICS INC.
    Inventors: Jin Soo Choi, Hee Jeong Cho, Doo Hyun Sung, Han Gyu Cho, Sung Ho Moon, Jin Sam Kwak, Bin Chul Ihm
  • Terminal apparatus and a method for transmitting feedback information in a wireless communication system
    Patent number: 8630252
    Abstract: A mobile station apparatus for transmitting feedback information in a wireless communication system and method thereof are disclosed. According to the present invention, feedback information is transmitted by a mobile station in a wireless communication system. The present invention includes receiving an allocation of a specific frequency partition from a base station by a fractional frequency reuse (FFR), generating a prescribed type feedback information on the specific frequency partition by measuring a channel quality of the specific frequency partition, and transmitting the feedback information on the specific frequency partition to the base station. Preferably, the mobile station can transmit feedback information on a frequency partition unallocated by the base station based on the received feedback request information. Accordingly, feedback overhead can be decreased in feedback transmission.
    Type: Grant
    Filed: July 7, 2009
    Date of Patent: January 14, 2014
    Assignee: LG Electronics Inc.
    Inventors: Han Gyu Cho, Bin Chul Ihm, Jin Sam Kwak
  • Apparatus and method for monitoring control channel in multi-carrier system
    Patent number: 8625521
    Abstract: Provided are an apparatus and a method for monitoring a control channel in a multi-carrier system. A plurality of sub-search spaces within an extended search space corresponds to a plurality of scheduled component carriers, respectively. Each of the plurality of sub-search spaces includes a plurality of control channel elements (CCEs), and the CCEs of the plurality of sub-search spaces are interleaved with each another within the extended search space.
    Type: Grant
    Filed: May 14, 2010
    Date of Patent: January 7, 2014
    Assignee: LG Electronics Inc.
    Inventors: So Yeon Kim, Sung Ho Moon, Jae Hoon Chung, Yeong Hyeon Kwon, Han Gyu Cho
  • Method of transmitting interference information signal in wireless communication system
    Patent number: 8615199
    Abstract: A method of transmitting an interference information signal in a wireless communication system is provided. The method includes receiving a neighbor sounding signal from a mobile station (MS) in a neighbor cell, obtaining an interference information signal based on the neighbor sounding signal and transmitting the interference information signal to a neighbor base station (BS), the neighbor BS which is a BS in the neighbor cell.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: December 24, 2013
    Assignee: LG Electronics Inc.
    Inventors: Jong Young Han, Doo Hyun Sung, Han Gyu Cho, Jae Hoon Chung, Hyung Ho Park, Jin Soo Choi
  • Method and apparatus for controlling uplink power in a wireless communication system
    Patent number: 8593979
    Abstract: A method and apparatus for controlling uplink transmit power in a wireless communication system are disclosed. The method includes determining an uplink transmit power for each of the plurality of transmission channels, and sequentially allocating the determined uplink transmit powers to the transmission channels in a descending order of predetermined priority levels of the transmission channels, within a maximum available transmit power of the user equipment. The priority levels of the transmission channels are predetermined so that control channels, a sounding channel, a data channel, and a bandwidth request channel have priority levels in a descending order.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: November 26, 2013
    Assignee: LG Electronics Inc.
    Inventors: Dong Cheol Kim, Wook Bong Lee, Han Gyu Cho, Jin Sam Kwak, Bin Chul Ihm, Hyun Woo Lee
  • METHOD AND APPARATUS OF DOWNLINK SUBCHANNELIZATION IN WIRELESS COMMUNICATION SYSTEM
    Publication number: 20130308584
    Abstract: A method of downlink subchannelization in a wireless communication system includes: transmitting a network entry and network discovery information including an open loop (OL) region parameter; and mapping a physical resource unit (PRU) to a contiguous resource unit (CRU) or a distributed resource unit (DRU) with respect to ith frequency partition based on the OL region parameter, wherein a permutation sequence used for mapping a PRU of the ith frequency partition (PRUFPi) to a CRU of the ith frequency partition (CRUFPi) or a DRU of the ith frequency partition (DRUFPi) is determined by a seed value, and the seed value is set to be a particular value according to the value of the OL region parameter.
    Type: Application
    Filed: July 26, 2013
    Publication date: November 21, 2013
    Applicant: LG ELECTRONICS INC.
    Inventors: Wook Bong LEE, Jin Young CHUN, Han Gyu CHO, Jin Soo CHOI, Bin Chul IHM
  • Method of transmitting broadcasting information
    Patent number: 8588155
    Abstract: A method of transmitting broadcasting information or system information to user equipments in an idle mode or a sleep mode in a radio access system is disclosed. The method of transmitting broadcasting information to a user equipment in an idle mode includes receiving information related to the idle mode, decoding a control channel assigned to a first paging subframe according to the information related to the idle mode, and receiving the broadcasting information via a second paging subframe indicated by the control channel regardless of the information related to the idle mode, if the decoding of the control channel is successful.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: November 19, 2013
    Assignee: LG Electronics Inc.
    Inventors: Eun Jong Lee, Doo Hyun Sung, Jae Hoon Chung, Han Gyu Cho, Kyu Jin Park
  • Downlink localized and distributed multiplexing in a frequency division multiplexing manner
    Patent number: 8582549
    Abstract: A method of signaling system configuration information in a wireless mobile cellular communication system is disclosed. The method comprises transmitting the system configuration information at every predetermined period. In this case, each downlink subframe is divided into a plurality of frequency partitions, and subcarriers from at least two of the plurality of frequency partitions are allocated to a first mobile station using distributed resource allocation.
    Type: Grant
    Filed: April 2, 2009
    Date of Patent: November 12, 2013
    Assignee: LG Electronics Inc.
    Inventors: Han Gyu Cho, Jin Soo Choi, Jin Sam Kwak
  • Method and apparatus for allocating ranging channel for synchronized mobile station in wireless communication system
    Patent number: 8576789
    Abstract: A method and apparatus for allocating a ranging channel for a synchronized mobile station in a wireless communication system is provided. A base station (BS) allocates the ranging channel for the synchronized mobile station in a first subframe and a first subband. An index of the first subframe and an index of the first subband are determined respectively based on an index of a second subframe and an index of a second subband in which a ranging channel of a non-synchronized mobile station is allocated.
    Type: Grant
    Filed: August 27, 2010
    Date of Patent: November 5, 2013
    Assignee: LG Electronics Inc.
    Inventors: Hyun Woo Lee, Han Gyu Cho, Jin Sam Kwak, Yeong Hyeon Kwon
  • METHOD AND DEVICE FOR TRANSMITTING DOWNLINK CONTROL SIGNAL IN WIRELESS COMMUNICATION SYSTEM
    Publication number: 20130286918
    Abstract: Provided are a method and a device for transmitting a downlink control signal in a wireless communication system. A base station sets a transmission/reception (Tx/Rx) period (TSPS) on the basis of the type of a machine to machine (M2M) application, transmits said set Tx/Rx period to an M2M device, and performs a permanent scheduling for said M2M device on the basis of said set Tx/Rx period. Alternatively, the base station transmits a first downlink control signal that is allocated for an M2M group, which includes a plurality of M2M devices, to an M2M device that is included in said M2M group, and transmits, to said M2M device, a second downlink control signal that is specific to and allocated to said M2M device.
    Type: Application
    Filed: December 1, 2011
    Publication date: October 31, 2013
    Applicant: LG ELECTRONICS INC.
    Inventors: Kyu Jin Park, Han Gyu Cho, Seung Hyun Kang
  • Apparatus and method for monitoring control channel in multi-carrier system
    Patent number: 8570969
    Abstract: Provided are an apparatus and a method for monitoring a control channel in a multiple-carrier system. The user equipment monitors downlink control channels for a plurality of scheduled component carriers in an extended search space. The user equipment receives downlink control information for the scheduled component carrier via a successfully decoded downlink control channel.
    Type: Grant
    Filed: May 14, 2010
    Date of Patent: October 29, 2013
    Assignee: LG Electronics Inc.
    Inventors: So Yeon Kim, Sung Ho Moon, Jae Hoon Chung, Yeong Hyeon Kwon, Han Gyu Cho
  • Apparatus for transmitting a signal in wireless communication system and method for same
    Patent number: 8565210
    Abstract: A method for transmitting signal, at a mobile station, in a wireless communication system is provided. Inter-cell interference level control parameter information may be different for each frequency partition due to use of an FFR scheme. This method is advantageous in that, when uplink transmission is performed, system throughput and cell edge-user throughput are improved and inter-cell interference level control is efficiently performed, thereby improving a Signal to Interference plus Noise Ratio (SINR) at the receiving end.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: October 22, 2013
    Assignee: LG Electronics Inc.
    Inventors: Han Gyu Cho, Jin Soo Choi, Jong Young Han, Jin Sam Kwak, Wook Bong Lee, Dong Cheol Kim