Patents by Inventor Joon Kui Ahn

Joon Kui Ahn 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: 10924209
    Abstract: A method for channel-coding information bits using a code generation matrix including 32 rows and A columns corresponding to length of the information bits includes, channel-coding the information bits having “A” length using basis sequences having 32-bit length corresponding to columns of the code generation matrix, and outputting the channel-coded result as an output sequence. If “A” is higher than 10, the code generation matrix is generated when (A?10) additional basis sequences were added as column-directional sequences to a first or second matrix. The first matrix is a TFCI code generation matrix composed of 32 rows and 10 columns used for TFCI coding. The second matrix is made when at least one of an inter-row location or an inter-column location of the first matrix was changed. The additional basis sequences satisfy a value 10 of a minimum Hamming distance.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: February 16, 2021
    Assignee: LG ELECTRONICS INC.
    Inventors: Dong Wook Roh, Joon Kui Ahn, Nam Yul Yu, Jung Hyun Cho, Yu Jin Noh, Ki Jun Kim, Dae Won Lee
  • Patent number: 10917906
    Abstract: A user equipment (UE) receives downlink data using resource blocks in a wireless mobile communication system. The UE receives downlink control information including resource allocation information and downlink data mapped to physical resource blocks (PRBs) based on the downlink control information. The resource allocation information indicates virtual resource block (VRB) allocations for the UE. Indexes of the PRBs to which the downlink data are mapped are determined based on a mapping relationship between virtual resource blocks (VRBs) and the PRBs. The mapping relationship is defined based on indexes of the VRBs which are mapped to the indexes of the PRBs for a first slot of a subframe and a second slot of the subframe. The indexes of the PRBs for the second slot are shifted with respect to the indexes of the PRBs for the first slot based on a predetermined gap. The mapping relationship includes a transformation of VRB indexes based on a matrix.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: February 9, 2021
    Assignee: Optis Cellular Technology, LLC
    Inventors: Dong Youn Seo, Eun Sun Kim, Bong Hoe Kim, Joon Kui Ahn
  • Patent number: 10912069
    Abstract: Provided are a method for a terminal transmitting uplink control information (UCI) through a physical uplink control channel (PUCCH) in a wireless communication system, and a terminal using the method. A transmission power to be applied to the uplink control channel is determined on the basis of a value subordinate to a PUCCH format, and at least one type of UCI is transmitted from the physical uplink control channel by using the transmission power that is determined, wherein when the PUCCH format is PUCCH format 3, and the at least one type of UCI includes acknowledgement/negative-acknowledgement (ACK/NACK) and periodic channel state information (CSI), the value subordinate to the PUCCH format is determined on the basis of the number of bits of the ACK/NACK and the number of bits of the periodic CSI.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: February 2, 2021
    Assignee: BlackBerry Limited
    Inventors: Dong Youn Seo, Joon Kui Ahn, Yun Jung Yi, Suck Chel Yang, Bong Hoe Kim
  • Patent number: 10897339
    Abstract: A method for generating a channel quality indicator (CQI) in a mobile communication system is presented. The method includes grouping a number of subcarriers to form at least one channel quality indicator subband for generating a channel quality indicator, and generating a channel quality indicator in each channel quality indicator subband, wherein a size of each channel quality indicator subband is dependent on a system bandwidth value and is an integer multiple of a downlink frequency resource unit size, wherein the downlink frequency resource unit size is prescribed according to the system bandwidth value.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: January 19, 2021
    Assignee: LG ELECTRONICS INC.
    Inventors: Dong Wook Roh, Bong Hoe Kim, Joon Kui Ahn, Yu Jin Noh, Dong Youn Seo, Ki Jun Kim
  • Patent number: 10892875
    Abstract: Provided is a method of transmitting ACK/NACK in a TDD-based wireless communication system. The method includes: receiving M downlink subframes associated with an uplink subframe n in each of two serving cells; determining four candidate resources based on the M downlink subframes received in each of the two serving cells; and transmitting an ACK/NACK response for the M downlink subframes by using one resource selected from the four candidate resources in the uplink subframe n, wherein the two serving cells includes a first serving cell and a second serving cell, and wherein among the four candidate resources, a first resource and a second resource are associated with a PDSCH or a SPS release PDCCH for releasing semi-persistent scheduling received in the first serving cell, and a third resource and a fourth resources are associated with a PDSCH received in the second serving cell.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: January 12, 2021
    Assignee: LG ELECTRONICS INC.
    Inventors: Joon Kui Ahn, Suck Chel Yang, Min Gyu Kim, Dong Youn Seo
  • Patent number: 10848292
    Abstract: A method and device for transmitting or receiving an Acknowledgement/Negative-ACK (ACK/NACK) signal in a wireless communication system are discussed. The method of transmitting includes receiving scheduling information from a base station through a physical downlink control channel; receiving a data unit from the base station through a physical downlink shared channel based upon the scheduling information; determining an uplink resource index for transmitting the ACK/NACK signal for the data unit; and transmitting the ACK/NACK signal to the base station by using an uplink resource indicated by the uplink resource index, wherein the uplink resource index is determined by using index modification information, a smallest value of resource indexes used for the physical downlink control channel, and a value transferred from an upper layer, and wherein the index modification information is signaled through the physical downlink control channel.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: November 24, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Joon Kui Ahn, Jung Hoon Lee, Suck Chel Yang, Dong Youn Seo
  • Patent number: 10841908
    Abstract: Provided is a method and an apparatus for transmitting uplink control information by a terminal in wireless communication system. When a PUCCH resource used for transmitting only periodic CSI from a subframe, the resource is a first resource, and a resource indicated by ARI is a second resource, when a setting allows transmitting together ACK/NACK and the periodic CSI through a PUCCH from the same subframe, the first resource and the second resource are mutually exclusive, and the second resource that is used for transmitting together the ACK/NACK and the periodic CSI uses the resource indicated by the ARI from resources determined by an RRC.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: November 17, 2020
    Assignee: LG Electronics Inc.
    Inventors: Dong Youn Seo, Suck Chel Yang, Joon Kui Ahn
  • Publication number: 20200336245
    Abstract: A method for channel-coding information bits using a code generation matrix including 32 rows and A columns corresponding to length of the information bits includes, channel-coding the information bits having “A” length using basis sequences having 32-bit length corresponding to columns of the code generation matrix, and outputting the channel-coded result as an output sequence. If “A” is higher than 10, the code generation matrix is generated when (A-10) additional basis sequences were added as column-directional sequences to a first or second matrix. The first matrix is a TFCI code generation matrix composed of 32 rows and 10 columns used for TFCI coding. The second matrix is made when at least one of an inter-row location or an inter-column location of the first matrix was changed. The additional basis sequences satisfy a value 10 of a minimum Hamming distance.
    Type: Application
    Filed: July 2, 2020
    Publication date: October 22, 2020
    Applicant: LG ELECTRONICS INC.
    Inventors: Dong Wook ROH, Joon Kui AHN, Nam Yul YU, Jung Hyun CHO, Yu Jin NOH, Ki Jun KIM, Dae Won LEE
  • Patent number: 10798700
    Abstract: A method is provided for a User Equipment (UE) operating in a wireless communication system. The method includes monitoring a control channel candidate with a downlink control information (DCI) format size in a plurality of search spaces. Each of the plurality of search spaces corresponds to a respective carrier indicator field (CIF) value. The method further includes transmitting or receiving data using downlink control information which is detected by monitoring the control channel candidate. In a state that control channel candidates have different values of carrier indicator field for the DCI format size, the control channel candidate with the DCI format size is received in any search space corresponding to any of the different values of carrier indicator field for the DCI format size.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: October 6, 2020
    Assignee: LG Electronics Inc.
    Inventors: Suck Chel Yang, Min Gyu Kim, Joon Kui Ahn, Dong Youn Seo
  • Publication number: 20200287667
    Abstract: A method for mapping a physical hybrid automatic repeat request indicator channel (PHICH) is described. The method for mapping a PHICH includes determining an index of a resource element group transmitting a repetitive pattern of the PHICH, according to a ratio of the number of available resource element groups in a symbol in which the PHICH is transmitted and the number of available resource element groups in a first or second OFDM symbol, and mapping the PHICH to the symbol according to the determined index. In transmitting the PHICH, since efficient mapping is performed considering available resource elements varying with OFDM symbols, repetition of the PHICH does not generate interference between neighbor cell IDs and performance is improved.
    Type: Application
    Filed: May 27, 2020
    Publication date: September 10, 2020
    Inventors: Jung Hoon LEE, Joon Kui AHN
  • Publication number: 20200259694
    Abstract: A method performed by a wireless device, includes processing information bits used for data transmission in a cell, and generating a reference signal sequence based on a cell identifier of the cell. Further, a device includes a data processor configured to process information bits used for data transmission in a cell, and a reference signal generator configured to generate a reference signal sequence based on a cell identifier of the cell.
    Type: Application
    Filed: April 28, 2020
    Publication date: August 13, 2020
    Applicant: LG ELECTRONICS INC.
    Inventors: Jung Hoon LEE, Dae Won LEE, Ki Jun KIM, Joon Kui AHN
  • Patent number: 10742256
    Abstract: The present invention provides for transmitting a spread signal in a mobile communication system. The present invention includes spreading a signal using a plurality of spreading codes, wherein the plurality of spreading codes have a spreading factor, multiplexing the spread signal by code division multiplexing, transmitting the multiplexed signal via a plurality of neighboring frequency resources of one OFDM symbol of a first antenna set, and transmitting the same multiplexed signal via a plurality of neighboring frequency resources of one OFDM symbol of a second antenna set.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: August 11, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Jung Hoon Lee, Ki Jun Kim, Dong Wook Roh, Dae Won Lee, Joon Kui Ahn
  • Patent number: 10728915
    Abstract: A method for determining link direction of resources in a wireless communication system, the method performed by a user equipment (UE) includes receiving frame configuration information from a base station, wherein the frame configuration information indicates at least one of default resources and flexible resources in a frame, receiving downlink control information (DCI) format from the base station, and determining link direction of the flexible resources in the frame based on the frame configuration information and the DCI format.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: July 28, 2020
    Assignee: LG Electronics Inc.
    Inventors: Dong Youn Seo, Min Gyu Kim, Suck Chel Yang, Joon Kui Ahn
  • Patent number: 10721030
    Abstract: A method and an apparatus for transmitting a reception acknowledgement for hybrid automatic repeat request (HARQ) of a user equipment (UE). The reception acknowledgement may be an ACK signal or a NACK signal for physical downlink shared channels (PDSCHs). The reception acknowledgement is transmitted on a physical uplink control channel (PUCCH), and the UE selects a resource of the PUCCH based on a number of the received physical downlink control channels. That is, the UE selects a first PUCCH resource for a number of the received PDCCHs being less than a pre-defined number, and the UE selects a second PUCCH resource for a number of the received PDCCHs being equal to or greater than the pre-defined number.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: July 21, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Dong Youn Seo, Min Gyu Kim, Suck Chel Yang, Joon Kui Ahn
  • Publication number: 20200229220
    Abstract: A user equipment (UE) receives downlink data using resource blocks in a wireless mobile communication system. The UE receives downlink control information including resource allocation information and downlink data mapped to physical resource blocks (PRBs) based on the downlink control information. The resource allocation information indicates virtual resource block (VRB) allocations for the UE. Indexes of the PRBs to which the downlink data are mapped are determined based on a mapping relationship between virtual resource blocks (VRBs) and the PRBs. The mapping relationship is defined based on indexes of the VRBs which are mapped to the indexes of the PRBs for a first slot of a subframe and a second slot of the subframe. The indexes of the PRBs for the second slot are shifted with respect to the indexes of the PRBs for the first slot based on a predetermined gap. The mapping relationship includes a transformation of VRB indexes based on a matrix.
    Type: Application
    Filed: March 31, 2020
    Publication date: July 16, 2020
    Inventors: Dong Youn SEO, Eun Sun KIM, Bong Hoe KIM, Joon Kui AHN
  • Publication number: 20200229160
    Abstract: A User Equipment (UE) monitors a set of Physical Downlink Control Channel (PDCCH) candidates for control information received from a base station at subframe k. The set of PDCCH candidates to monitor are defined in terms of search spaces. The UE monitors a UE-specific search space, among the search spaces, at each of aggregation levels (L) of 1, 2, 4 and 8 control channel elements (CCEs), the CCE being a resource unit comprising a specific number of resource elements and used for transmission of the control information. The L CCEs correspond to a first PDCCH candidate among the set of PDCCH candidates of the search space at a subframe k are located at positions given by: L*{(Yk)mod(floor(C))}+i, wherein i?0, . . . , L-1, where Yk is defined by: Yk?(A*Yk?1B) mod D. The variable C is determined based on the number of CCEs (NCCE) divided by the aggregation level (L), and A, B, and D are predetermined constant values predetermined regardless of the aggregation levels L.
    Type: Application
    Filed: March 24, 2020
    Publication date: July 16, 2020
    Inventors: Dae Won LEE, Ki Jun KIM, Dong Wook ROH, Yu Jin NOH, Joon Kui AHN, Jung Hoon LEE
  • Patent number: 10680767
    Abstract: A method for mapping a physical hybrid automatic repeat request indicator channel (PHICH) is described. The method for mapping a PHICH includes determining an index of a resource element group transmitting a repetitive pattern of the PHICH, according to a ratio of the number of available resource element groups in a symbol in which the PHICH is transmitted and the number of available resource element groups in a first or second OFDM symbol, and mapping the PHICH to the symbol according to the determined index. In transmitting the PHICH, since efficient mapping is performed considering available resource elements varying with OFDM symbols, repetition of the PHICH does not generate interference between neighbor cell IDs and performance is improved.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: June 9, 2020
    Inventors: Jung Hoon Lee, Joon Kui Ahn
  • Patent number: 10673667
    Abstract: A method and device for generating a reference signal sequence are discussed. The method includes generating the reference signal sequence, and transmitting the reference signal sequence, wherein the reference signal sequence is defined by a specific equation based on a pseudo-random sequence.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: June 2, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Jung Hoon Lee, Dae Won Lee, Ki Jun Kim, Joon Kui Ahn
  • Publication number: 20200153584
    Abstract: A method and user equipment for performing an uplink transmission in a wireless communication system, are discussed. The method includes allocating transmission power to a first uplink transmission and a second uplink transmission when a total power in a transmission period including at least one or more OFDM symbols exceeds maximum power, wherein each of the first and second uplink transmissions is one of physical uplink shared channel (PUSCH) transmission, physical uplink control channel (PUCCH) transmission, physical random access channel (PRACH) transmission and sounding reference signal (SRS) transmission; and performing the first and second uplink transmissions according to the allocated transmission power, wherein the allocation of the transmission power is performed according to priority information.
    Type: Application
    Filed: January 17, 2020
    Publication date: May 14, 2020
    Inventors: Joon Kui AHN, Suck Chel YANG, Yun Jung Yl, Dong Youn SEO
  • Patent number: RE48277
    Abstract: A method of transmitting uplink signals is disclosed. The method includes transmitting, by a user equipment, periodic control information on a Physical Uplink Control Channel (PUCCH) at a predetermined period, dropping the periodic control information and multiplexing uplink signals except the periodic control information when the user equipment is operating in subframe bundling transmission mode where the uplink signals are transmitted in a plurality of consecutive subframes, and transmitting the multiplexed uplink signals on a Physical Uplink Shared Channel (PUSCH).
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: October 20, 2020
    Assignee: LG Electronics Inc.
    Inventors: Dae Won Lee, Ki Jun Kim, Joon Kui Ahn