Patents Assigned to WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.
  • Video signal processing method and apparatus
    Patent number: 11284108
    Abstract: Disclosed are a video signal processing method and apparatus for encoding or decoding a video signal. In more detail, the video signal processing method includes receiving intra prediction mode information for a current block, wherein the intra prediction mode information indicates one of a plurality of intra prediction modes configuring an intra prediction mode set; and decoding the current block based on the received intra prediction mode information, wherein the intra prediction mode set comprises a plurality of angle modes, and the plurality of angle modes comprises a basic angle mode and an extended angle mode, wherein the extended angle mode is signaled based on the basic angle mode.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: March 22, 2022
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., HUMAX CO., LTD.
    Inventors: Geonjung Ko, Dongcheol Kim, Juhyung Son, Jaehong Jung, Jinsam Kwak
  • Wireless communication method and wireless communication terminal using basic service set identification information determination of received frame
    Patent number: 11272537
    Abstract: The present invention relates to a wireless communication method and a wireless communication terminal using a determination of basic service set identification information of a received frame, and more particularly, to a wireless communication method and a wireless communication terminal for performing an operation according to a determination result whether the received frame is an intra-BSS frame or an inter-BSS frame.
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: March 8, 2022
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Geonjung Ko, Juhyung Son, Jinsam Kwak, Woojin Ahn
  • Wireless communication method for simultaneous data transmission, and wireless communication terminal using same
    Patent number: 11272549
    Abstract: The present invention relates to a wireless communication method for simultaneous data transmission and a wireless communication terminal using the same, and more particularly, a wireless communication method in which a plurality of terminals simultaneously transmit data for improving a data throughput in a high density environment, and a wireless communication terminal using the same. To this end, the present invention provides a wireless communication method for a terminal including transmitting a trigger frame indicating simultaneous uplink data transmission of multi-users, receiving uplink data transmitted by a plurality of terminals in response to the trigger frame, and transmitting a block acknowledgement for the plurality of terminals having transmitted the uplink data, and a wireless communication terminal using the same.
    Type: Grant
    Filed: September 8, 2020
    Date of Patent: March 8, 2022
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Woojin Ahn, Yongho Kim, Juhyung Son, Jinsam Kwak
  • METHOD AND APPARATUS FOR BINAURAL RENDERING AUDIO SIGNAL USING VARIABLE ORDER FILTERING IN FREQUENCY DOMAIN
    Publication number: 20220059105
    Abstract: The present invention relates to a method and an apparatus for binaural rendering an audio signal using variable order filtering in frequency domain. To this end, provided are a method for processing an audio signal including: receiving an input audio signal; receiving a set of truncated subband filter coefficients for filtering each subband signal of the input audio signal, the set of truncated subband filter coefficients being constituted by one or more FFT filter coefficients generated by performing FFT by a predetermined block size; generating at least one subframe for each subband; generating at least one filtered subframe for each subband; performing inverse FFT on the filtered subframe for each subband; and generating a filtered subband signal by overlap-adding the transformed subframe for each subband and an apparatus for processing an audio signal using the same.
    Type: Application
    Filed: November 2, 2021
    Publication date: February 24, 2022
    Applicants: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY, WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Taegyu LEE, Hyunoh OH, Youngcheol PARK, Daehee YOUN, Jeongil SEO, Yongju LEE, Seungkwon BEACK, Kyeongok KANG, Daeyoung JANG
  • Wireless communication method supporting multi-user cascading transmission and wireless communication terminal using same
    Patent number: 11258543
    Abstract: Provided is a wireless communication terminal that communicates wirelessly. The terminal includes: a transceiver; and a processor. The processor is configured to receive a Downlink Multi-User (DL MU) PPDU including information for an Uplink Multi-User (UL MU) transmission from a base wireless communication terminal by using the transceiver, and transmit the UL MU PPDU to the base wireless communication terminal based on the information for UL MU transmission.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: February 22, 2022
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Juhyung Son, Jinsam Kwak, Geonjung Ko, Woojin Ahn
  • Wireless communication method and wireless communication terminal, which use network allocation vector
    Patent number: 11259298
    Abstract: Provided is a wireless communication terminal. The processor is configured to receive, from a base wireless communication terminal through the transceiver, a first frame including first information indicating a duration required for a pending frame exchange sequence and second information indicating a frequency band which is allocated for transmission of a second frame, wherein the pending frame exchange sequence is a transmission sequence between one or more wireless communication terminals, set a network allocation vector (NAV) according to the first information indicating the duration for the pending frame exchange sequence, and reset the NAV when the wireless communication terminal does not receive a PLCP Protocol Data Unit (PPDU) for a reference time from a time point at which the first frame is received.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: February 22, 2022
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Jinsoo Ahn, Yongho Kim, Jinsam Kwak, Juhyung Son
  • Method, device, and system for transmitting or receiving uplink control channel in wireless communication system
    Patent number: 11240081
    Abstract: A UE in a wireless communication system is disclosed. The UE includes a communication module and a processor for controlling the communication module. The processor determines a first cyclic shift (CS) value based on hybrid automatic repeat request acknowledgment (HARQ-ACK) information representing a response to a downlink channel having been received from a base station, determines a CS offset based on request information representing a request to be transmitted from the UE to the base station, determines a second CS value representing a degree of cyclic-shifting a base sequence to be used in a physical uplink control channel (PUCCH) based on the first CS value and the CS offset, and transmits the PUCCH for simultaneous transmission of the request information and the HARQ-ACK information using a sequence generated by cyclic-shifting the base sequence based on the second CS value.
    Type: Grant
    Filed: February 7, 2020
    Date of Patent: February 1, 2022
    Assignee: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.
    Inventors: Minseok Noh, Jinsam Kwak, Kyungjun Choi, Hyukmin Son
  • Wireless communication method for multi-user transmission scheduling, and wireless communication terminal using same
    Patent number: 11240166
    Abstract: The present invention relates to a wireless communication terminal and a wireless communication method for efficiently scheduling uplink multi-user transmission. To this end, provided are a base wireless communication terminal, including: a transceiver configured to transmit and receive a wireless signal; and a processor configured to control an operation of the transceiver, wherein the processor selects an access category for transmitting a trigger frame which solicits an uplink multi-user transmission, performs a backoff procedure for transmitting the trigger frame based on the selected access category, and transmits the trigger frame when a backoff counter of the backoff procedure expires and a wireless communication method using the same.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: February 1, 2022
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Jinsoo Ahn, Yongho Kim, Jinsam Kwak, Juhyung Son
  • Wireless communication method using fragmentation and wireless communication terminal using same
    Patent number: 11240705
    Abstract: Provided is a wireless communication terminal that communicates wirelessly. The terminal includes: a transceiver; and a processor. The processor is configured to transmit first information on a fragmentation level to be used for data to be transmitted to a recipient by using the transceiver in an add Block ACK (ADDBA) setup procedure.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: February 1, 2022
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Woojin Ahn, Juhyung Son, Jinsam Kwak, Geonjung Ko
  • Channel access method, device and system in unlicensed band
    Patent number: 11234270
    Abstract: The present invention provides a method, device, and system for adjusting a contention window size for performing channel access. The method includes: receiving uplink scheduling information on the uplink transmission including a new data indicator (NDI) associated with a specific subframe in a first uplink transmission burst; determining a contention window size based on the NDI; generating a random number N (N?0) in the determined contention window size based on the NDI associated with the specific subframe; and performing the uplink transmission on the specific cell after sensing a channel on the specific cell at least for N slots while the channel on the specific cell is idle. If the NDI is toggled, the contention window size is reset to a minimum value, and if the NDI is not toggled, the contention window size is increased to a next higher allowed value.
    Type: Grant
    Filed: July 8, 2020
    Date of Patent: January 25, 2022
    Assignee: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.
    Inventors: Minseok Noh, Jinsam Kwak, Juhyung Son
  • Wireless communication method and wireless communication terminal using wake-up radio
    Patent number: 11218966
    Abstract: Disclosed is a wireless communication terminal to communicate wirelessly. The wireless communication terminal includes: a first wireless transceiver configured to transmit and receive signals modulated by a first modulation method; a second wireless receiver configured to receive a signal modulated by a second modulation method different from the first modulation method; and a processor. The processor is configured to sequentially receive a plurality of fields of a wake-up radio (WUR) frame included in a WUR physical layer processing data unit (PPDU) transmitted by the second modulation method, and when a predetermined condition for the plurality of fields is satisfied, stop receiving the WUR frame without determining whether values of the plurality of fields are valid.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: January 4, 2022
    Assignee: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.
    Inventors: Woojin Ahn, Juhyung Son, Jinsam Kwak
  • Wireless communication method for multi-user transmission scheduling, and wireless communication terminal using same
    Patent number: 11201830
    Abstract: The present invention relates to a wireless communication terminal and a wireless communication method for efficiently scheduling uplink multi-user transmission. To this end, provided are a base wireless communication terminal, including: a transceiver configured to transmit and receive a wireless signal; and a processor configured to control an operation of the transceiver, wherein the processor selects an access category for transmitting a trigger frame which solicits an uplink multi-user transmission, performs a backoff procedure for transmitting the trigger frame based on the selected access category, and transmits the trigger frame when a backoff counter of the backoff procedure expires and a wireless communication method using the same.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: December 14, 2021
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Jinsoo Ahn, Yongho Kim, Jinsam Kwak, Juhyung Son
  • Wireless communication method supporting multi-user cascading transmission and wireless communication terminal using same
    Patent number: 11196513
    Abstract: Provided is a wireless communication terminal that communicates wirelessly. The terminal includes: a transceiver; and a processor. The processor is configured to receive a Downlink Multi-User (DL MU) PPDU including information for an Uplink Multi-User (UL MU) transmission from a base wireless communication terminal by using the transceiver, and transmit the UL MU PPDU to the base wireless communication terminal based on the information for UL MU transmission.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: December 7, 2021
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Juhyung Son, Jinsam Kwak, Geonjung Ko, Woojin Ahn
  • Method and apparatus for binaural rendering audio signal using variable order filtering in frequency domain
    Patent number: 11195537
    Abstract: The present invention relates to a method and an apparatus for binaural rendering an audio signal using variable order filtering in frequency domain. To this end, provided are a method for processing an audio signal including: receiving an input audio signal; receiving a set of truncated subband filter coefficients for filtering each subband signal of the input audio signal, the set of truncated subband filter coefficients being constituted by one or more FFT filter coefficients generated by performing FFT by a predetermined block size; generating at least one subframe for each subband; generating at least one filtered subframe for each subband; performing inverse FFT on the filtered subframe for each subband; and generating a filtered subband signal by overlap-adding the transformed subframe for each subband and an apparatus for processing an audio signal using the same.
    Type: Grant
    Filed: January 21, 2020
    Date of Patent: December 7, 2021
    Assignees: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY, WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Taegyu Lee, Hyunoh Oh, Youngcheol Park, Daehee Youn, Jeongil Seo, Yongju Lee, Seungkwon Beack, Kyeongok Kang, Daeyoung Jang
  • Method for wireless communication with wireless communication terminal for long range transmission and wireless communication terminal using same
    Patent number: 11191093
    Abstract: Provided is a base wireless communication terminal that communicates with a Long Range (LR) wireless communication terminal supporting LR wireless communication. The base wireless communication terminal includes a transceiver and a processor. The processor is configured to set length information included in a non-LR preamble, which is a preamble for a non-LR wireless communication terminal that does not support LR wireless communication, to be longer than a length from a predetermined point in a Physical layer Protocol Data Unit (PPDU) to an end point of the PPDU, and transmits the PPDU including the non-LR preamble to the LR wireless communication terminal using the transceiver. In this case, the length information is information for indicating a length from a predetermined point in the PPDU to an end point of the PPDU.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: November 30, 2021
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., HUMAX NETWORKS, INC.
    Inventors: Juhyung Son, Jinsam Kwak, Bonho Koo, Kiwon Kang
  • Wireless communication method and wireless communication terminal for signaling multi-user packet
    Patent number: 11171695
    Abstract: The present invention relates to a wireless communication method and a wireless communication terminal for signaling a multi-user packet. More specifically, provided are a wireless communication terminal including a communication unit; and a processor configured to process signals transmitted and received through the communication unit, wherein the processor receives, through the communication unit, a high efficiency multi-user PHY protocol data unit (HE MU PPDU), wherein a preamble of the HE MU PPDU includes high efficiency signal A field (HE-SIG-A) and high efficiency signal B field (HE-SIG-B), and decodes the received HE MU PPDU based on information obtained from the HE-SIG-A, wherein a configuration of the HE-SIG-B is identified based on information obtained from at least one subfield of the HE-SIG-A and a wireless communication method using the same.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: November 9, 2021
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Juhyung Son, Jinsam Kwak, Geonjung Ko, Woojin Ahn
  • Video signal processing method and apparatus using adaptive motion vector resolution
    Patent number: 11166040
    Abstract: An apparatus for decoding a video signal, the apparatus comprising a processor, wherein the processor is configured to: configure a Motion Vector Prediction (MVP) candidate list for motion compensation of a current block through one of a first method and a second method, acquire a motion vector predictor of the current block, based on the configured MVP candidate list, acquire a motion vector differential value indicating a difference between a motion vector of the current block and the motion vector predictor, modify the motion vector differential value, based on a resolution of the motion vector differential value of the current block, acquire the motion vector of the current block, based on the motion vector predictor and the modified motion vector differential value, and reconstruct the current block, based on the acquired motion vector.
    Type: Grant
    Filed: December 7, 2020
    Date of Patent: November 2, 2021
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., HUMAX CO., LTD.
    Inventors: Geonjung Ko, Dongcheol Kim, Juhyung Son, Jaehong Jung, Jinsam Kwak
  • METHOD AND APPARATUS FOR PROCESSING MULTIMEDIA SIGNALS
    Publication number: 20210337335
    Abstract: The present invention relates to a method and an apparatus for processing a signal, which are used for effectively reproducing a multimedia signal, and more particularly, to a method and an apparatus for processing a signal, which are used for implementing filtering for multimedia signal having a plurality of subbands with a low calculation amount.
    Type: Application
    Filed: July 6, 2021
    Publication date: October 28, 2021
    Applicants: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., GCOA CO., LTD.
    Inventors: Hyunoh OH, Taegyu LEE
  • Wireless communication method and wireless communication terminal for signaling multi-user packet
    Patent number: 11159210
    Abstract: The present invention relates to a wireless communication method and a wireless communication terminal for signaling a multi-user packet. More specifically, provided are a wireless communication terminal including a communication unit; and a processor configured to process signals transmitted and received through the communication unit, wherein the processor receives, through the communication unit, a high efficiency multi-user PHY protocol data unit (HE MU PPDU), wherein a preamble of the HE MU PPDU includes high efficiency signal A field (HE-SIG-A) and high efficiency signal B field (HE-SIG-B), and decodes the received HE MU PPDU based on information obtained from the HE-SIG-A, wherein a configuration of the HE-SIG-B is identified based on information obtained from at least one subfield of the HE-SIG-A and a wireless communication method using the same.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: October 26, 2021
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Juhyung Son, Jinsam Kwak, Geonjung Ko, Woojin Ahn
  • Signaling method for multi-user transmission, and wireless communication terminal and wireless communication method using same
    Patent number: 11153058
    Abstract: The present invention relates to a signaling method of a wireless LAN frame for multi-user transmission, and to a wireless communication terminal, and a wireless communication method using the same. To this end, provided are a wireless communication terminal, including: a transceiver; and a processor, wherein the processor is configured to: generate a frame including a first signal field and a second signal field, wherein the first signal field includes a bandwidth field indicating total bandwidth information in which the frame is transmitted, and the second signal field includes a resource allocation field indicating arrangement information of resource unit(s) in a frequency band through which the frame is transmitted, and transmit, by the transceiver, the generated frame and a wireless communication method using the same.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: October 19, 2021
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Juhyung Son, Jinsam Kwak, Geonjung Ko