Patents by Inventor Dragan Vujcic

Dragan Vujcic 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: 20200120717
    Abstract: A base station transmits a random access response in response to a random access request (random access preamble) of a user equipment. The random access response includes information about a time when the random access request is transmitted and sequence number information of the random access request (random access preamble). The user equipment checks whether the received random access response is the response of the random access request transmitted hy the user equipment, using the information about the time when the random access request is transmitted and the sequence number information included in the received random access response.
    Type: Application
    Filed: December 11, 2019
    Publication date: April 16, 2020
    Inventors: Min Seok NOH, Yeong Hyeon KWON, Jin Sam KWAK, Dong Cheol KIM, Sung Ho MOON, Seung Hee HAN, Hyun Woo LEE, Dragan VUJCIC
  • Publication number: 20180324870
    Abstract: A base station transmits a random access response in response to a random access request (random access preamble) of a user equipment. The random access response indudes information about a time when the random access request is transmitted and sequence number information of the random access request (random access preamble). The user equipment checks whether the received random access response is the response of the random access request transmitted by the user equipment, using the information about the time when the random access request is transmitted and the sequence number information included in the received random access response.
    Type: Application
    Filed: July 19, 2018
    Publication date: November 8, 2018
    Inventors: Min Seok NOH, Yeong Hyeon Kwon, Jin Sam Kwak, Dong Cheol Kim, Sung Ho Moon, Seung Hee Han, Hyun Woo Lee, Dragan Vujcic
  • Patent number: 10057925
    Abstract: A base station transmits a random access response in response to a random access request (random access preamble) of a user equipment. The random access response includes information about a time when the random access request is transmitted and sequence number information of the random access request (random access preamble). The user equipment checks whether the received random access response is the response of the random access request transmitted by the user equipment, using the information about the time when the random access request is transmitted and the sequence number information included in the received random access response.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: August 21, 2018
    Assignee: GOLDPEAK INNOVATIONS INC
    Inventors: Min Seok Noh, Yeong Hyeon Kwon, Jin Sam Kwak, Dong Cheol Kim, Sung Ho Moon, Seung Hee Han, Hyun Woo Lee, Dragan Vujcic
  • Publication number: 20170359842
    Abstract: A base station transmits a random access response in response to a random access request (random access preamble) of a user equipment. The random access response includes information about a time when the random access request is transmitted and sequence number information of the random access request (random access preamble). The user equipment checks whether the received random access response is the response of the random access request transmitted by the user equipment, using the information about the time when the random access request is transmitted and the sequence number information included in the received random access response.
    Type: Application
    Filed: August 29, 2017
    Publication date: December 14, 2017
    Inventors: Min Seok NOH, Yeong Hyeon KWON, Jin Sam KWAK, Dong Cheol KIM, Sung Ho MOON, Seung Hee HAN, Hyun Woo LEE, Dragan VUJCIC
  • Patent number: 9750054
    Abstract: A base station transmits a random access response in response to a random access request (random access preamble) of a user equipment. The random access response includes information about a time when the random access request is transmitted and sequence number information of the random access request (random access preamble). The user equipment checks whether the received random access response is the response of the random access request transmitted by the user equipment, using the information about the time when the random access request is transmitted and the sequence number information included in the received random access response.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: August 29, 2017
    Assignee: GOLDPEAK INNOVATIONS INC
    Inventors: Min Seok Noh, Yeong Hyeon Kwon, Jin Sam Kwak, Dong Cheol Kim, Sung Ho Moon, Seung Hee Han, Hyun Woo Lee, Dragan Vujcic
  • Patent number: 9713172
    Abstract: A terminal random access procedure is improved by allowing a mobile terminal to correctly map signature indexes onto cyclic shifted Zadoff-Chu (ZC) sequences when the deployed cells support a high-speed mobility by informing a mobile terminal whether a cell supports high-speed mobility.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: July 18, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Dragan Vujcic, Yeong Hyeon Kwon
  • Publication number: 20170118778
    Abstract: A terminal random access procedure is improved by allowing a mobile terminal to correctly map signature indexes onto cyclic shifted Zadoff-Chu (ZC) sequences when the deployed cells support a high-speed mobility by informing a mobile terminal whether a cell supports high-speed mobility.
    Type: Application
    Filed: January 9, 2017
    Publication date: April 27, 2017
    Applicant: LG ELECTRONICS INC.
    Inventors: Dragan VUJCIC, Yeong Hyeon KWON
  • Patent number: 9578660
    Abstract: A terminal random access procedure is improved by allowing a mobile terminal to correctly map signature indexes onto cyclic shifted Zadoff-Chu (ZC) sequences when the deployed cells support a high-speed mobility by informing a mobile terminal whether a cell supports high-speed mobility.
    Type: Grant
    Filed: August 4, 2016
    Date of Patent: February 21, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Dragan Vujcic, Yeong Hyeon Kwon
  • Publication number: 20160345365
    Abstract: A terminal random access procedure is improved by allowing a mobile terminal to correctly map signature indexes onto cyclic shifted Zadoff-Chu (ZC) sequences when the deployed cells support a high-speed mobility by informing a mobile terminal whether a cell supports high-speed mobility.
    Type: Application
    Filed: August 4, 2016
    Publication date: November 24, 2016
    Applicant: LG ELECTRONICS INC.
    Inventors: Dragan VUJCIC, Yeong Hyeon KWON
  • Patent number: 9462578
    Abstract: A method for generating an uplink transmission burst includes using one or more symbols to define the uplink transmission burst, and forming a preamble portion and a payload portion for the uplink transmission burst. The preamble portion is formed using at least a portion of one or more of the symbols, such that the preamble portion includes a signature that is defined in a predetermined signature set. The payload portion is formed using at least a portion of one or more of the symbols. Typically, at least a portion of the preamble portion and at least a portion of the payload portion are formed using the same symbol.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: October 4, 2016
    Assignee: LG ELECTRONICS INC.
    Inventors: Patrick Fischer, Dragan Vujcic
  • Patent number: 9445437
    Abstract: A terminal random access procedure is improved by allowing a mobile terminal to correctly map signature indexes onto cyclic shifted Zadoff-Chu (ZC) sequences when the deployed cells support a high-speed mobility by informing a mobile terminal whether a cell supports high-speed mobility.
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: September 13, 2016
    Assignee: LG ELECTRONICS INC.
    Inventors: Dragan Vujcic, Yeong Hyeon Kwon
  • Publication number: 20160198495
    Abstract: A base station transmits a random access response in response to a random access request (random access preamble) of a user equipment. The random access response includes information about a time when the random access request is transmitted and sequence number information of the random access request (random access preamble). The user equipment checks whether the received random access response is the response of the random access request transmitted by the user equipment, using the information about the time when the random access request is transmitted and the sequence number information included in the received random access response.
    Type: Application
    Filed: March 14, 2016
    Publication date: July 7, 2016
    Inventors: Min Seok NOH, Yeong Hyeon KWON, Jin Sam KWAK, Dong Cheol KIM, Sung Ho MOON, Seung Hee HAN, Hyun Woo LEE, Dragan VUJCIC
  • Patent number: 9363828
    Abstract: According to one embodiment, a method of requesting a random access connection between a mobile terminal and a base station includes: receiving, by the mobile terminal, information comprising at least one signature root sequence index, a cyclic shift parameter, and a number of signatures used for representing a boundary between a first signature set and a second signature set; preparing, by the mobile terminal, random access signatures according to the at least one signature root sequence index and the cyclic shift parameter, wherein at least one of the random access signatures is associated with the first signature set and the remaining of the random access signatures are associated with the second signature set; and selecting, by the mobile terminal, a random access preamble from the first signature set or the second signature set based on a message size and a radio condition.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: June 7, 2016
    Assignee: LG ELECTRONICS INC.
    Inventors: Patrick Fischer, Remi Feuillette, Dragan Vujcic
  • Patent number: 9288824
    Abstract: A base station transmits a random access response in response to a random access request (random access preamble) of a user equipment. The random access response includes information about a time when the random access request is transmitted and sequence number information of the random access request (random access preamble). The user equipment checks whether the received random access response is the response of the random access request transmitted by the user equipment, using the information about the time when the random access request transmitted and the sequence number information included in the received random access response.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: March 15, 2016
    Assignee: PANTECH CO., LTD.
    Inventors: Min Seok Noh, Yeong Hyeon Kwon, Jin Sam Kwak, Dong Cheol Kim, Sung Ho Moon, Seung Hee Han, Hyun Woo Lee, Dragan Vujcic
  • Patent number: 9179423
    Abstract: The disclosure relates to a method for a user equipment to report a transmission power capability to an e Node B. The user equipment operates in carrier aggregation. The method comprises determining, by the user equipment, that the transmission power capability of at least one power amplifier of the user equipment reaches at least one defined threshold, and triggering a generation of a power headroom report based on the determining step. The disclosure also relates to the corresponding user equipment and e Node B.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: November 3, 2015
    Assignee: LG ELECTRONICS INC.
    Inventor: Dragan Vujcic
  • Patent number: 9131363
    Abstract: Method for managing activation or deactivation of a secondary serving cell, SCell, for a base station (310) of a radiocommunication network and a User Equipment (320), UE, initially using a primary serving cell, PCell, and supporting Carrier Aggregation so as to aggregate SCell to PCell, the method comprising: —the UE obtaining information suggesting that an activation/deactivation command to activate/deactivate an SCell is likely to be received by the UE from the base station, said information obtaining taking place before said activation/deactivation command is actually received; —activating/deactivating an SCell as early as possible after said activation/deactivation command is received by the UE from the base station.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: September 8, 2015
    Assignee: LG Electronics Inc.
    Inventor: Dragan Vujcic
  • Patent number: 9131474
    Abstract: Methods for allocating and choosing dedicated signatures for random access are provided. Options for allocating dedicated signatures include allocating the dedicated signature from the unused space of the random signature root index when there is unused space and allocating more dedicated signatures from the same root index using the same time/frequency resources if additional signatures are needed, and reserving some preambles from the contention-based random access preambles from both sets of preambles. The present invention also proposes that the dedicated signatures be reserved in each of two sets of preambles.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: September 8, 2015
    Assignee: LG ELECTRONICS INC.
    Inventors: Patrick Fischer, Remi Feuillette, Dragan Vujcic
  • Patent number: 9118531
    Abstract: A method of generating random access preambles includes receiving information on a source logical index and generating random access preambles in the order of increasing cyclic shift from root ZC sequences with the consecutive logical indexes from the beginning of the source logical index until a predetermined number of the random access preambles are found, wherein the consecutive logical indexes are mapped to root indexes of the root ZC sequences.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: August 25, 2015
    Assignee: LG ELECTRONICS INC.
    Inventors: Hyun Woo Lee, Seung Hee Han, Min Seok Noh, Jin Sam Kwak, Dragan Vujcic, Dong Cheol Kim, Yeong Hyeon Kwon
  • Patent number: RE47661
    Abstract: A method for establishing a cyclic shift sequence to provide against the frequency offset is disclosed. The method calculates a distance between a channel response position of the sequence and an alias channel response position caused by a frequency offset, calculates the number of cyclic shifts per group according to the calculated distance, and establishes the cyclic shift (CS)-applying interval. This method easily establishes a cyclic shift (CS) interval at a specific location having no overlapping by considering a channel response of a reception (Rx) sequence and an alias location of this reception (Rx) sequence, although a reception (Rx) signal is shifted by a channel delay spreading or a propagation delay irrespective of categories of a domain generating a sequence, so that it can greatly reduce the number of the detection errors and the false alarm rate.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: October 22, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Hyun Woo Lee, Min Seok Noh, Yeong Hyeon Kwon, Seung Hee Han, Dong Cheol Kim, Jin Sam Kwak, Dragan Vujcic
  • Patent number: RE48114
    Abstract: A method for transmitting a random access preamble to a base station includes generating the random access preamble from a Zadoff-Chu (ZC) sequence, wherein the random access preamble is defined by cyclic shift (Cv) of the ZC sequence; and transmitting the random access preamble to the base station.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: July 21, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Hyun Woo Lee, Min Seok Noh, Yeong Hyeon Kwon, Seung Hee Han, Dong Cheol Kim, Jin Sam Kwak, Dragan Vujcic