Patents by Inventor Younjun KWAK

Younjun KWAK 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).

  • Power ramping and control in new radio (NR) devices
    Patent number: 10966164
    Abstract: A user equipment (UE) can include processing circuitry configured to, during a physical random access channel (PRACH) procedure, select a first synchronization signal (SS) block from a plurality of SS blocks within a received SS burst set, the SS block selected based on signal quality measurements of the plurality of SS blocks. A PRACH preamble is encoded for transmission to a base station using a PRACH resource subset corresponding to the selected SS block, the transmission using a UE transmit (Tx) beam of a plurality of available Tx beams and transmit power indicated by a power ramping counter. Upon failing to detect a random access response (RAR) from the base station, a second SS block is selected, the power ramping counter is reset, and the PRACH preamble is encoded for re-transmission using a second PRACH resource subset and transmit power indicated by the reset power ramping counter.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: March 30, 2021
    Assignee: Apple Inc.
    Inventors: Joonyoung Cho, Debdeep Chatterjee, Gang Xiong, Jeongho Jeon, Alexei Vladimirovich Davydov, Younjun Kwak, Dae Won Lee, Gregory Vladimirovich Morozov, Seunghee Han
  • Power Ramping and Control in New Radio (NR) Devices
    Publication number: 20200107275
    Abstract: A user equipment (UE) can include processing circuitry configured to, during a physical random access channel (PRACH) procedure, select a first synchronization signal (SS) block from a plurality of SS blocks within a received SS burst set, the SS block selected based on signal quality measurements of the plurality of SS blocks. A PRACH preamble is encoded for transmission to a base station using a PRACH resource subset corresponding to the selected SS block, the transmission using a UE transmit (Tx) beam of a plurality of available Tx beams and transmit power indicated by a power ramping counter. Upon failing to detect a random access response (RAR) from the base station, a second SS block is selected, the power ramping counter is reset, and the PRACH preamble is encoded for re-transmission using a second PRACH resource subset and transmit power indicated by the reset power ramping counter.
    Type: Application
    Filed: June 1, 2018
    Publication date: April 2, 2020
    Inventors: Joonyoung CHO, Debdeep CHATTERJEE, Gang XIONG, Jeongho JEON, Alexei Vladimirovich DAVYDOV, Younjun KWAK, Dae Won LEE, Gregory Vladimirovich MOROZOV, Seunghee HAN