Patents by Inventor Byoung Hoon Kim

Byoung Hoon 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).

  • Fast cell search
    Patent number: 8687620
    Abstract: Systems and methodologies are described that facilitate searches for a cell in a wireless communication environment. A mobile device can employ a searcher that can detect timing information respectively associated with PSCs and cells to determine the cell with the highest correlation. The searcher can detect SSCs, which can include detecting associated phase information, to determine the SSC with the highest correlation, CP length, and/or other information to facilitate identifying a desired cell having the strongest signal to establish communication between the mobile device and the desired cell. PSCs respectively associated with cells can have different positions in the symbol sequences, and SSCs can respectively be phase shifted at different angles to facilitate detection and identification of a cell(s), where a PSC can be utilized as a phase reference by the associated SSC.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: April 1, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Durga Prasad Malladi, Byoung-Hoon Kim, Tao Luo
  • Method and apparatus for cooperative multiple point transmission and reception
    Patent number: 8681682
    Abstract: A cooperative multiple point transmission and reception (CoMP) method of a user equipment (UE) receiving signals from a plurality of base stations (BSs) comprises receiving a first signal from a serving BS, receiving a second signal from an interfering BS, and restoring data, included in the first signal, using the second signal. The second signal comprises a downlink signal, transmitted from the interfering BS to a UE connected to the interfering BS, and a dummy signal for canceling interference of the downlink signal with the first signal. In a wireless communication system composed of multiple cells, CoMP using DPC can be performed even without data sharing between the cells.
    Type: Grant
    Filed: May 20, 2010
    Date of Patent: March 25, 2014
    Assignee: LG Electronics Inc.
    Inventors: Hyung Tae Kim, Han Byul Seo, Byoung Hoon Kim
  • Method and apparatus of transmitting backhaul signal in wireless communication system including relay station
    Patent number: 8681723
    Abstract: A method and apparatus of transmitting backhaul signals performed by a relay station in a wireless communication system is provided. A relay station performs scheduling with a base station in order to transmit the backhaul signals, and transmitting the backhaul signals to the base station using both resources for downlink transmission and resources for uplink transmission based on the scheduling.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: March 25, 2014
    Assignee: LG Electronics Inc.
    Inventors: Han Byul Seo, Byoung Hoon Kim
  • CONTROL ARRANGEMENT AND METHOD FOR COMMUNICATING PAGING MESSAGES IN A WIRELESS COMMUNICATION SYSTEM
    Publication number: 20140079036
    Abstract: Systems and methods for utilizing paging group IDs and paging indicators are disclosed for PDCCH and PDSCH transmissions to mobile terminals in a mobile communication system. By use of the paging group IDs and paging indicators, various groups of mobile terminals, including subsets of those groups can be paged with reduced decoding requirements. Nesting of the grouping is exploited and packing of the PDCCH frame to accomplish efficient use is described.
    Type: Application
    Filed: November 20, 2013
    Publication date: March 20, 2014
    Applicant: QUALCOMM Incorporated
    Inventors: Juan Montojo, Byoung-Hoon Kim, Durga Prasad Malladi, Sandip Sarkar
  • Apparatus for transmitting uplink signal in mimo wireless communication system and method thereof
    Patent number: 8670430
    Abstract: A method of multiplexing control information and data information in a wireless communication system is disclosed. The present invention includes mapping codewords corresponding to the data information to a preset number of layers, mapping the control information to the preset number of the layers, multiplexing the layer-mapped data information and the layer-mapped control information into a frequency region within an SC-FDMA symbol, and transmitting the SC-FDMA symbol to a base station via multiple antennas.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: March 11, 2014
    Assignee: LG Electronics Inc.
    Inventors: Dae Won Lee, Ki Jun Kim, Joon Kui Ahn, Byeong Woo Kang, Yu Jin Noh, Byoung Hoon Kim, Bong Hoe Kim
  • Method and apparatus for relaying data in wireless communication system
    Patent number: 8665761
    Abstract: A method of relaying data in a wireless communication system is provided. The method comprises: receiving data, transmitted over a first subframe from a base station, over a second subframe; and relaying the data to a user equipment over a third subframe which is placed after one or more subframes from the second subframe, wherein at least any one of the first and the second subframes is a non-detection subframe to which the user equipment does not attempt data detection. According to the present invention, the wireless communication system enables efficient data transmission between a base station and a relay station as compared to conventional subframe-configurated systems. Furthermore, the wireless communication system enables data transmission with improved wireless resource allocation efficiency.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: March 4, 2014
    Assignee: LG Electronics Inc.
    Inventors: Han Byul Seo, Young Seob Choi, Byoung Hoon Kim
  • Method for receiving data in multi input multi output
    Patent number: 8665975
    Abstract: Disclosed is a method for receiving data in a Multi Input Multi Output (MIMO) system, the method comprising: decoding data transmitted from a transmitter by using one beam-forming vector included in a codebook that beam-forming vectors are formed in a hierarchical structure according to at least one of change directions of radio channels, the number of channel change directions, and a change rate; determining whether to update the beam-forming vector based on the radio channel changes; selecting other beam-forming vector included in the codebook having a hierarchical structure when it is determined that update for the beam-forming vector is required; feed-backing information about an index indicating where the selected beam-forming vector is located in the hierarchical structure of the codebook to the transmitter; and decoding data received from the transmitter by using the selected beam-forming vector.
    Type: Grant
    Filed: November 6, 2009
    Date of Patent: March 4, 2014
    Assignees: LG Electronics Inc., Industry University Cooperation Foundation, Sogang University
    Inventors: Jaewon Kim, Jaewon Chang, Dong-Uk Lee, Wonjin Sung, Byoung-Hoon Kim, Jun-Ho Jo
  • Method and apparatus for mode switching between a multi-cell coordinated communication mode and a single-cell MIMO communication mode
    Patent number: 8665817
    Abstract: The present invention relates to a wireless communication system, and more particularly, discloses a method and an apparatus for mode switching between a multi-cell coordinated communication mode and a single-cell MIMO communication mode. A method for dynamically switching a communication mode according to one embodiment of the present invention comprises: a step of generating and transmitting first feedback information in accordance with a first communication mode; a step of switching the first communication mode into a second communication mode interlocked with the first communication mode; and a step of generating and transmitting second feedback information in accordance with the second communication mode.
    Type: Grant
    Filed: October 5, 2010
    Date of Patent: March 4, 2014
    Assignee: LG Electronics Inc.
    Inventors: Han Byul Seo, Byoung Hoon Kim
  • Beacon assisted cell search in a wireless communication system
    Patent number: 8665799
    Abstract: Techniques for transmitting synchronization signals to assist user equipments (UEs) perform cell searches are described. In one design, a base station for a cell may generate and transmit a primary synchronization signal and a secondary synchronization signal, which may be used by the UEs for initial cell search at power up. The base station may also generate and transmit one or more beacon signals, which may be used by the UEs for neighbor cell search to detect for neighbor cells. The number of beacon signals to transmit and the set of subcarriers usable for each beacon signal may be determined based on the system bandwidth. Each beacon signal may be mapped to one subcarrier in the set of subcarriers in each beacon symbol period. This one subcarrier may be determined based on a beacon hopping pattern or a beacon code and may be dependent on a cell identifier (ID).
    Type: Grant
    Filed: September 11, 2007
    Date of Patent: March 4, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Durga Prasad Malladi, Juan Montojo, Junyi Li, Byoung-Hoon Kim
  • Method of packet format dependent selection of MIMO-OFDM demodulator
    Patent number: 8660210
    Abstract: Systems and methodologies are described that facilitate code rate and modulation order dependent selection of a suitable demodulator for a received data packet. According to various aspects, systems and/or methods are described that enable selection of an optimal demodulation scheme such that signal receiver complexity is not increased and optimal decoding throughput performance is achieved.
    Type: Grant
    Filed: January 22, 2007
    Date of Patent: February 25, 2014
    Assignee: QUALCOMM Incorporated
    Inventor: Byoung-Hoon Kim
  • Method for transmitting acknowledgement/non-acknowledgement in wireless communication system employing relay station
    Patent number: 8649316
    Abstract: A method for transmitting acknowledgement (ACK)/non-acknowledgement (NACK) in a wireless communication system employing a relay station is provided. The method includes receiving data, and transmitting an ACK/NACK for the data according to a specific rule when the ACK/NACK cannot be transmitted in the synchronous ACK/NACK transmission rule. It is possible to solve a problem caused by ACK/NACK transmission between a base station and a relay station.
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: February 11, 2014
    Assignee: LG Electronics Inc.
    Inventors: Han Byul Seo, Byoung Hoon Kim
  • METHOD AND APPARATUS FOR TRANSMITTING SIGNAL IN WIRELESS COMMUNICATION SYSTEM
    Publication number: 20140036764
    Abstract: A method of transmitting a signal of a base station in a wireless communication system is provided. The method includes transmitting a first signal to the relay station through the transmission period in a subframe including a transmission period and a guard time for transmission/reception switching of a relay station, and transmitting a second signal to a macro user equipment through the guard time. Accordingly, a signal can be effectively transmitted in the wireless communication system employing the relay station.
    Type: Application
    Filed: October 8, 2013
    Publication date: February 6, 2014
    Applicant: LG ELECTRONICS INC.
    Inventors: Han Byul SEO, Byoung Hoon KIM
  • Method of relaying data
    Patent number: 8644209
    Abstract: A method of relaying data in a relay station of a wireless communication system based on a radio frame consisting of a plurality of downlink subframes and a plurality of uplink subframes is provided. The method includes receiving, from a base station, a scheduling message at a downlink subframe and transmitting, to the base station, uplink data at a first uplink subframe or a second uplink subframe according to the scheduling message, wherein the first uplink subframe is an uplink subframe shifted by 4 subframes from the downlink subframe, and wherein when the scheduling message includes a scheduling field which indicates decreasing or increasing a time interval between a time of receiving the scheduling message and a time of transmitting the uplink data, the uplink data is transmitted at a second uplink subframe indicated by the scheduling field.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: February 4, 2014
    Assignee: LG Electronics Inc.
    Inventors: Han Byul Seo, Byoung Hoon Kim
  • METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING SIGNAL FROM RELAY STATION IN RADIO COMMUNICATION SYSTEM
    Publication number: 20140029508
    Abstract: A method and device for a transmitting and receiving a signal from a relay station in a radio communication system is provided. The method includes: receiving offset time information from a base station; configuring a time difference between an access downlink transmission subframe that transmits an access downlink signal to a relay station terminal according to the offset time information and a backhaul downlink reception subframe that receives a backhaul downlink signal from the base station; transmitting a control signal from the access downlink transmission subframe to the relay station terminal; and receiving the backhaul downlink signal from the base station in the backhaul downlink reception subframe.
    Type: Application
    Filed: October 2, 2013
    Publication date: January 30, 2014
    Applicant: LG ELECTRONICS INC.
    Inventors: Hak Seong KIM, Soon Yil KWON, Han Byul SEO, Young Seob CHOI, Byoung Hoon KIM, Ki Jun KIM
  • Method and apparatus for channel and noise estimation
    Patent number: 8634505
    Abstract: A technique for performing channel and noise estimation for a MIMO transmission sent from multiple transmit antennas to multiple receive antennas is described. Samples are obtained from multiple receive antennas for a multiple-input multiple-output (MIMO) transmission sent from multiple transmit antennas. Channel estimates are derived by correlating the samples with at least one pilot sequence. Signal, noise and interference statistics are also estimated based on a cross product of the samples. Equalizer weights are derived. The correlating includes multiplying a sample vector for a chip period and a complex conjugated pilot chip for the chip period offset by a delay.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: January 21, 2014
    Assignee: QUALCOMM Incorporated
    Inventor: Byoung-Hoon Kim
  • Fast cell search
    Patent number: 8634403
    Abstract: Systems and methodologies are described that facilitate searches for a cell in a wireless communication environment. A mobile device can employ a searcher that can detect timing information respectively associated with PSCs and cells to determine the cell with the highest correlation. The searcher can detect SSCs, which can include detecting associated phase information, to determine the SSC with the highest correlation, CP length, and/or other information to facilitate identifying a desired cell having the strongest signal to establish communication between the mobile device and the desired cell. PSCs respectively associated with cells can have different positions in the symbol sequences, and SSCs can respectively be phase shifted at different angles to facilitate detection and identification of a cell(s), where a PSC can be utilized as a phase reference by the associated SSC.
    Type: Grant
    Filed: January 10, 2008
    Date of Patent: January 21, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Durga Prasad Malladi, Byoung-Hoon Kim, Tao Luo
  • Uplink control channel format
    Patent number: 8630184
    Abstract: Systems and methodologies are described that facilitate encoding feedback or control information into a compact payload. In particular, a rank indicator, a precoding matrix indicator and channel quality indicators are packaged into a control channel payload that fits into a single sub-frame. The payload format is determined based at least in part on an antenna configuration or channel quality indicator granularity. In addition, hybrid automatic repeat requests can be included in the payload.
    Type: Grant
    Filed: August 14, 2008
    Date of Patent: January 14, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Byoung-Hoon Kim, Durga Prasad Malladi
  • METHOD FOR PERFORMING HARQ FOR RELAY STATION
    Publication number: 20130343260
    Abstract: A method for performing HARQ includes: receiving information to determine downlink subframes used for a relay station to receive scheduling information from a BS; determining uplink subframes for performing a HARQ with the DL subframes, each of the UL subframes corresponding to each of the DL subframes; assigning sequentially each of a plurality of HARQ processes to each of the UL subframes one by one; and performing HARQ with the BS at at least one of the HARQ processes. An n-th subframe is configured for a corresponding UL subframe if an (n-4)-th subframe is configured for one of the DL subframes, n denoting an integer. The HARQ processes are equal in number to the UL subframes. The DL subframes are configured in at least one radio frame having 10 subframes indexed from 0 to 9. Subframes having indexes 0, 4, 5 and 9 are not configured as a DL subframe.
    Type: Application
    Filed: July 15, 2013
    Publication date: December 26, 2013
    Applicant: LG ELECTRONICS INC.
    Inventors: Hanbyul SEO, Byoung-Hoon KIM
  • Method and apparatus for block-wise decision-feedback equalization for wireless communication
    Patent number: 8615035
    Abstract: Techniques for performing decision feedback equalization are described. A feed-forward filter response and a feedback filter response are derived based on a channel estimate and a reliability parameter and further without constraint on the feedback filter response or with a constraint of no feedback for an on-time sample. The reliability parameter is indicative of the reliability of the feedback used for equalization and may be frequency dependent or frequency invariant. Different feed-forward and feedback filter responses may be derived with different constraints on the feedback filter and different assumptions for the reliability parameter. Equalization is performed with the feed-forward and feedback filter responses.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: December 24, 2013
    Assignee: Qualcomm Incorporated
    Inventors: Yongbin Wei, Byoung-Hoon Kim, Durga Prasad Malladi
  • Control arrangement and method for communicating paging messages in a wireless communication system
    Patent number: 8600413
    Abstract: Systems and methods for utilizing paging group IDs and paging indicators are disclosed for PDCCH and PDSCH transmissions to mobile terminals in a mobile communication system. By use of the paging group IDs and paging indicators, various groups of mobile terminals, including subsets of those groups can be paged with reduced decoding requirements. Nesting of the grouping is exploited and packing of the PDCCH frame to accomplish efficient use is described.
    Type: Grant
    Filed: October 28, 2008
    Date of Patent: December 3, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Juan Montojo, Byoung-Hoon Kim, Durga Prasad Malladi, Sandip Sarkar