Patents by Inventor E Rang LIM

E Rang LIM 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).

  • Wireless positioning server using clock offset calibration positioning method using the same
    Patent number: 9568584
    Abstract: A wireless positioning server using clock offset compensation and a wireless positioning method using the same. The wireless positioning server using clock offset compensation estimates a precise position of a tag requiring position information by effectively predicting information regarding a distance between a beacon for performing positioning and the tag requiring position information. An error in the positioning estimation result due to a clock offset is minimized by measuring a relative clock frequency ratio between beacons and by compensating for clock frequencies of the beacons when a distance between a beacon and a tag is estimated.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: February 14, 2017
    Assignees: SOONGSIL UNIVERSITY RESEARCH CONSORTIUM TECHNO-PARK, KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTE
    Inventors: Yo An Shin, Won Cheol Lee, Hyung Min Chang, E Rang Lim, Ji Myung Kang, Soon Woo Lee, Young Jin Park, Kwan Ho Kim
  • Method and apparatus for performing HARQ process in wireless communication system
    Patent number: 9503837
    Abstract: A method and an apparatus for performing hybrid automatic repeat request (HARQ) in a wireless communication system is provided. UEs that use the same application for D2D communications form a sharing group so that reliability of transmission of a physical uplink shared channel (PUSCH) and a physical uplink control channel (PUCCH) among terminals that perform the D2D communications is guaranteed. In addition, among the terminals that perform the D2D communications, uplink transmission points in time determined in accordance with TDD configuration are checked and determined (calculated) so that the PUSCH and the PUCCH are correctly transmitted and received.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: November 22, 2016
    Assignee: LG Electronics Inc.
    Inventors: Hak Seong Kim, Oh Soon Shin, Shan Ai Wu, Yo An Shin, Mo Chan Yang, E Rang Lim
  • METHOD AND APPARATUS FOR PERFORMING HARQ PROCESS IN WIRELESS COMMUNICATION SYSTEM
    Publication number: 20140098719
    Abstract: A method and an apparatus for performing hybrid automatic repeat request (HARQ) in a wireless communication system is provided. UEs that use the same application for D2D communications form a sharing group so that reliability of transmission of a physical uplink shared channel (PUSCH) and a physical uplink control channel (PUCCH) among terminals that perform the D2D communications is guaranteed. In addition, among the terminals that perform the D2D communications, uplink transmission points in time determined in accordance with TDD configuration are checked and determined (calculated) so that the PUSCH and the PUCCH are correctly transmitted and received.
    Type: Application
    Filed: October 8, 2013
    Publication date: April 10, 2014
    Applicants: SUNGKYUNKWAN UNIVERSITY FOUNDATION FOR CORPORATE, LG ELECTRONICS INC.
    Inventors: Hak Seong KIM, Oh Soon SHIN, Shan Ai WU, Yo An SHIN, Mo Chan YANG, E Rang LIM
  • WIRELESS POSITIONING SERVER USING CLOCK OFFSET CALIBRATION AND WIRELESS POSITIONING METHOD USING THE SAME
    Publication number: 20130241774
    Abstract: A wireless positioning server using clock offset compensation and a wireless positioning method using the same. The wireless positioning server using clock offset compensation estimates a precise position of a tag requiring position information by effectively predicting information regarding a distance between a beacon for performing positioning and the tag requiring position information. An error in the positioning estimation result due to a clock offset is minimized by measuring a relative clock frequency ratio between beacons and by compensating for clock frequencies of the beacons when a distance between a beacon and a tag is estimated.
    Type: Application
    Filed: December 7, 2012
    Publication date: September 19, 2013
    Applicants: KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTE, SOONGSIL UNIVERSITY RESEARCH CONSORTIUM TECHNO-PARK
    Inventors: Yo An SHIN, Won Cheol LEE, Hyung Min CHANG, E Rang LIM, Ji Myung KANG, Soon Woo LEE, Young Jin PARK, Kwan Ho KIM
  • Baby carrier warmer
    Patent number: D910278
    Type: Grant
    Filed: December 30, 2019
    Date of Patent: February 16, 2021
    Inventor: E Rang Lim