Patents by Inventor Dong-Wook Roh

Dong-Wook Roh 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).

  • 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: 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
  • 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
  • Publication number: 20200204413
    Abstract: A method of transmitting a Physical Layer Convergence Procedure (PLCP) frame in a Very High Throughput (VHT) Wireless Local Area Network (WLAN) system includes generating a MAC Protocol Data Unit (MPDU) to be transmitted to a destination station (STA), generating a PLCP Protocol Data Unit (PPDU) by adding a PLCP header, including an L-SIG field containing control information for a legacy STA and a VHT-SIG field containing control information for a VHT STA, to the MPDU, and transmitting the PPDU to the destination STA. A constellation applied to some of Orthogonal Frequency Division Multiplex (OFDM) symbols of the VHT-SIG field is obtained by rotating a constellation applied to an OFDM symbol of the L-SIG field.
    Type: Application
    Filed: February 28, 2020
    Publication date: June 25, 2020
    Inventors: Dae Won LEE, Dong Wook ROH, Byeong Woo KANG, Yong Ho SEOK, Yu Jin NOH, Bong Hoe KIM
  • Publication number: 20200168720
    Abstract: An integrated circuit device includes a fin-type active region protruding from a top surface of a substrate and extending in a first direction parallel to the top surface of the substrate, a gate structure intersecting with the fin-type active region and extending on the substrate in a second direction perpendicular to the first direction, a source/drain region on a first side of the gate structure, a first contact structure on the source/drain region, and a contact capping layer on the first contact structure. A top surface of the first contact structure has a first width in the first direction, a bottom surface of the contact capping layer has a second width greater than the first width stated above in the first direction, and the contact capping layer includes a protruding portion extending outward from a sidewall of the first contact structure.
    Type: Application
    Filed: August 27, 2019
    Publication date: May 28, 2020
    Inventors: Dae-young Kwak, Ji-ye Kim, Jung-hwan Chun, Min-chan Gwak, Dong-hyun Roh, Jin-wook Lee, Sang-jin Hyun
  • Patent number: 10651985
    Abstract: According to one embodiment, a method for transmitting an uplink signal includes transmitting the uplink signal including a block of data symbols. The block of data symbols are mapped to at least two sets of subcarrier blocks. Each data symbol of the block of data symbols is mapped to one of subcarriers of the at least two sets of subcarrier blocks. The at least two sets of subcarrier blocks are not contiguous in frequency. The block of data symbols are mapped in sequence starting with a first data symbol to the at least two sets of subcarrier blocks and in increasing order of subcarrier index.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: May 12, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Hak Seong Kim, Bong Hoe Kim, Dong Wook Roh, Joon Kui Ahn, Dong Youn Seo, Jung Hoon Lee
  • Patent number: 10624081
    Abstract: A User Equipment (UE) receives control information via a Physical Downlink Control Channel (PDCCH) at subframe k. A decoder monitors a set of PDCCH candidates 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 UE-specific search space is given based on a modulus operation using variables Yk and C for the subframe k. Yk is defined by: Yk=(A*Yk?1+B) mod D. C is determined based on the number of CCEs (NCCE) divided by the aggregation level (L). A, B, and D are predetermined constant values regardless of the aggregation levels (L). Y?1 is determined based on a UE identifier having 16-bits when k=0. The decoder decodes the control information of the PDCCH.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: April 14, 2020
    Assignee: Optis Cellular Technology, LLC
    Inventors: Dae Won Lee, Ki Jun Kim, Dong Wook Roh, Yu Jin Noh, Joon Kui Ahn, Jung Hoon Lee
  • Patent number: 10616874
    Abstract: A method for transmitting information of resources for use in transmission of ACK/NACK signals in a mobile communication system is disclosed. An example method for receiving ACK/NACK signals in a mobile communication system is also disclosed. When resources for transmission of data and resources for transmission of control information of the data are scheduled through virtual unit resources, the method identifies information of resources for receiving an ACK/NACK signal for transmission data mapped to information of at least one of a virtual unit resource allocated to the transmission data and a virtual unit resource allocated to control information of the transmission data, and receives the ACK/NACK signal for the transmission data through the information of resources for receiving the ACK/NACK signal.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: April 7, 2020
    Assignee: LG Electronics Inc.
    Inventors: Dae Won Lee, Bong Hoe Kim, Young Woo Yun, Ki Jun Kim, Dong Wook Roh, Suk Hyon Yoon, Joon Kui Ahn, Dong Youn Seo, Hak Seong Kim, Jung Hoon Lee, Eun Sun Kim, Sung Duk Choi
  • Patent number: 10616021
    Abstract: A method of transmitting a Physical Layer Convergence Procedure (PLCP) frame in a Very High Throughput (VHT) Wireless Local Area Network (WLAN) system includes generating a MAC Protocol Data Unit (MPDU) to be transmitted to a destination station (STA), generating a PLCP Protocol Data Unit (PPDU) by adding a PLCP header, including an L-SIG field containing control information for a legacy STA and a VHT-SIG field containing control information for a VHT STA, to the MPDU, and transmitting the PPDU to the destination STA. A constellation applied to some of Orthogonal Frequency Division Multiplex (OFDM) symbols of the VHT-SIG field is obtained by rotating a constellation applied to an OFDM symbol of the L-SIG field.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: April 7, 2020
    Assignee: Wi-Fi One, LLC
    Inventors: Dae Won Lee, Dong Wook Roh, Byeong Woo Kang, Yong Ho Seok, Yu Jin Noh, Bong Hoe Kim
  • Patent number: 10530543
    Abstract: A method of transmitting a training signal in a Wireless Local Area Network (WLAN) system includes generating one or more first training signals for a first destination station and one or more second training signals for a second destination station by applying a mapping matrix P to a training signal generation sequence, mapping the first training signals and the second training signals to a plurality of antennas according to an antenna mapping matrix, and performing Inverse Fast Fourier Transform (IFFT) on each of the first training signals and the second training signals mapped to the plurality of antennas and transmitting the training signals through the plurality of antennas.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: January 7, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Byeong Woo Kang, Dong Wook Roh, Yong Ho Seok, Yu Jin Noh, Bong Hoe Kim, Dae Won Lee
  • Publication number: 20190319769
    Abstract: A method for transmitting uplink signals, which include ACK/NACK signals, control signals other than the ACK/NACK signals, and data signals, is disclosed. The method comprises serially multiplexing the control signals and the data signals; sequentially mapping the multiplexed signals within a specific resource region in accordance with a time-first mapping method, the specific resource region including a plurality of symbols and a plurality of virtual subcarriers; and arranging the ACK/NACK signals at both symbols near symbols to which a reference signal of the plurality of symbols is transmitted. Thus, the uplink signals can be transmitted to improve receiving reliability of signals having high priority.
    Type: Application
    Filed: June 26, 2019
    Publication date: October 17, 2019
    Inventors: Dae Won Lee, Bong Hoe KIM, Young Woo YUN, Ki Jun KIM, Dong Wook ROH, Hak Seong KIM, Hyun Wook PARK
  • Publication number: 20190312672
    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: June 24, 2019
    Publication date: October 10, 2019
    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: 10374775
    Abstract: A method for transmitting uplink signals, which include ACK/NACK signals, control signals other than the ACK/NACK signals, and data signals, is disclosed. The method comprises serially multiplexing the control signals and the data signals; sequentially mapping the multiplexed signals within a specific resource region in accordance with a time-first mapping method, the specific resource region including a plurality of symbols and a plurality of virtual subcarriers; and arranging the ACK/NACK signals at both symbols near symbols to which a reference signal of the plurality of symbols is transmitted. Thus, the uplink signals can be transmitted to improve receiving reliability of signals having high priority.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: August 6, 2019
    Assignee: Optis Cellular Technology, LLC
    Inventors: Dae Won Lee, Bong Hoe Kim, Young Woo Yun, Ki Jun Kim, Dong Wook Roh, Hak Seong Kim, Hyun Wook Park
  • Patent number: 10361811
    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: April 3, 2017
    Date of Patent: July 23, 2019
    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: 10291350
    Abstract: A method of receiving a packet in a wireless local area network system includes receiving, from an access point (AP), a packet comprising a data field and a first signal field including a first field, a second field, and a third field, wherein the packet is generated for a single receiving station or a plurality of receiving stations; and processing the packet based on the first signal field, wherein the first field indicates a group ID of the single receiving station or the plurality of receiving stations and whether the packet is generated based on a single user transmission scheme or a multi user transmission scheme, wherein, for the single user transmission scheme, at least one pre-determined value of the first field is used to indicate that the packet is generated based on the single user transmission scheme.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: May 14, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Dae Won Lee, Byeong Woo Kang, Yu Jin Noh, Yong Ho Seok, Dong Wook Roh
  • Patent number: 10263676
    Abstract: A method for indicating a combination between a codeword and a layer in a MIMO communication, system, a layer mapping method, and a data transmission method using the same are disclosed. A minimum number of codeword-layer mapping combinations from among all available combinations based on the’ numbers of all codewords and all layers are pre-defined in consideration of a ratio of a codeword to a layer, a reception performance of a receiver, and reduction of combinations, so that a data transmission method using the predefined combinations is implemented. If a specific one codeword is mapped to at least two layers, a diversity gain can be acquired.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: April 16, 2019
    Assignee: LG Electronics Inc.
    Inventors: Dong Wook Roh, Bong Hoe Kim, Young Woo Yun, Dong Youn Seo, Joon Kui Ahn, Ki Jun Kim
  • Patent number: 10236957
    Abstract: A method and apparatus for allowing a UE to transmit uplink signals using a MIMO scheme are disclosed. In order to maintain good Peak power to Average Power Ratio (PAPR) or Cubic Metric (CM) properties when the UE transmits uplink signals using the MIMO scheme, the UE uses a precoding scheme based on a precoding matrix established in a manner that one layer is transmitted to each antenna in specific rank transmission.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: March 19, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Yu Jin Noh, Ki Jun Kim, Dong Wook Roh, Byeong Woo Kang, Dae Won Lee, Bong Hoe Kim, Dong Youn Seo
  • Publication number: 20190029008
    Abstract: A User Equipment (UE) receives control information via a Physical Downlink Control Channel (PDCCH) at subframe k. A decoder monitors a set of PDCCH candidates 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 UE-specific search space is given based on a modulus operation using variables Yk and C for the subframe k. Yk is defined by: Yk=(A*Yk?1+B) mod D. C is determined based on the number of CCEs (NCCE) divided by the aggregation level (L). A, B, and D are predetermined constant values regardless of the aggregation levels (L). Y?1 is determined based on a UE identifier having 16-bits when k=0. The decoder decodes the control information of the PDCCH.
    Type: Application
    Filed: September 26, 2018
    Publication date: January 24, 2019
    Inventors: Dae Won LEE, Ki Jun KIM, Dong Wook ROH, Yu Jin NOH, Joon Kui AHN, Jung Hoon LEE
  • Publication number: 20190014578
    Abstract: A method of acquiring information on a resource region for transmitting PHICH and a method of receiving PDCCH using the same are disclosed. The resource region for transmitting the PHICH can be specified by first information corresponding to the per-sub frame PHICH number and second information corresponding to a duration of the PHICH within the subframe. The first Information can be specified into a form resulting from multiplying a predetermined basic number by a specific constant. And, the specific constant can be transmitted via PBCH. Moreover, the second information can be acquired from the PBCH as well.
    Type: Application
    Filed: September 13, 2018
    Publication date: January 10, 2019
    Applicant: LG ELECTRONICS INC.
    Inventors: Joon Kui AHN, Bong Hoe KIM, Young Woo YUN, Ki Jun KIM, Jung Hoon LEE, Dae Won LEE, Dong Youn SEO, Dong Wook ROH, Suk Hyon YOON
  • Patent number: 10172030
    Abstract: A method of transmitting information on a modulation and coding scheme (MCS) in a wireless local area network system is provided. A responding station receives a physical layer protocol data unit (PPDU) from a requesting station, configures a MCS feedback (MFB) based on the PPDU, and transmits feedback information to the requesting station. If the MFB is configured as a response to a MFB request (MRQ) of the requesting station, the feedback information includes the configured MFB and a MFB type field indicating that the MFB is configured as a response to the MRQ of the requesting station. If the MFB is not configured as a response to the MRQ of the requesting station, the feedback information includes the configured MFB, a MFB type field indicating that the MFB is not configured as a response to the MRQ of the requesting station, and coding information indicating a PPDU coding type.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: January 1, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Dae Won Lee, Byeong Woo Kang, Yong Ho Seok, Dong Wook Roh