Patents by Inventor Hyeon KWON

Hyeon KWON 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: 20120069793
    Abstract: According to one embodiment of the present invention, the method for transmitting control information from a relay node to a base station on a backhaul link comprises the steps of: determining whether one time slot of a backhaul uplink subframe from the relay node to the base station is a first type slot having transmitted symbol with guard time set or a second type slot without guard time set; diffusing the control information in a time domain using a first length sequence for the first type slot or a second length sequence for the second type slot; mapping the diffused control information on at least one slot from the first type slot or the second type slot; and transmitting the backhaul uplink subframe having more than one slot from the first type slot or the second type slot wherein the control information is mapped.
    Type: Application
    Filed: May 31, 2010
    Publication date: March 22, 2012
    Inventors: Jae Hoon Chung, Moon II Lee, Kyu Jin Park, Sung Ho Moon, Seung Hee Han, Yeong Hyeon Kwon
  • Publication number: 20120069812
    Abstract: Disclosed is a method for transmitting a sounding reference signal from a terminal to a base station in a radio communication system. More specifically, the method comprises the steps of: receiving downlink control information from a base station; checking a flag bit included in said downlink control information; checking an interpretation bit is included in said downlink control information, when said flag bit indicates an uplink; and transmitting an additional sounding reference signal and/or an uplink common channel based on said interpretation bit.
    Type: Application
    Filed: May 17, 2010
    Publication date: March 22, 2012
    Inventors: Min Seok Noh, Sung Ho Moon, Jae Hoon Chung, Seung Hee Han, Yeong Hyeon Kwon
  • Publication number: 20120069795
    Abstract: The present invention relates to a wireless communication system, and more particularly, discloses a method and apparatus in which a relay allocates carriers on a backhaul link and an access link in a multi-carrier wireless communication system.
    Type: Application
    Filed: June 8, 2010
    Publication date: March 22, 2012
    Inventors: Jae Hoon Chung, Yeong Hyeon Kwon, Sung Ho Moon, Kyu Jin Park
  • Publication number: 20120063374
    Abstract: Disclosed is a method for conducting communication using a frame structure which supports two or more wireless communication schemes, and an apparatus using the method. A method for constructing an FDD frame according to the present invention efficiently supports a legacy system and an enhanced system using an H-FDD frame structure. Further, the method for constructing an FDD frame according to the present invention efficiently supports a terminal and an H-FDD terminal, which use different communication systems.
    Type: Application
    Filed: April 20, 2010
    Publication date: March 15, 2012
    Inventors: Dong Guk Lim, Sung Ho Moon, Han Gyu Cho, Yeong Hyeon Kwon, Jin Sam Kwak
  • Publication number: 20120063324
    Abstract: The present invention relates to a method and device for monitoring the control channel in a multicarrier system. Each of a plurality of sub-search spaces corresponds to each of a plurality of scheduled component carriers. The terminal monitors a downlink control channel for a scheduled component carrier corresponding to each of the plurality of sub-search spaces. Each of the plurality of sub-search spaces is defined displaced to the extent that they are offset from each other.
    Type: Application
    Filed: May 14, 2010
    Publication date: March 15, 2012
    Inventors: So Yeon Kim, Sung Ho Moon, Jae Hoon Chung, Yeong Hyeon Kwon, Han Gyu Cho
  • Publication number: 20120063350
    Abstract: Provided are an apparatus and a method for monitoring a control channel in a multi-carrier system. A plurality of sub-search spaces within an extended search space corresponds to a plurality of scheduled component carriers, respectively. Each of the plurality of sub-search spaces includes a plurality of control channel elements (CCEs), and the CCEs of the plurality of sub-search spaces are interleaved with each another within the extended search space.
    Type: Application
    Filed: May 14, 2010
    Publication date: March 15, 2012
    Inventors: So Yeon Kim, Sung Ho Moon, Jae Hoon Chung, Yeong Hyeon Kwon, Han Gyu Cho
  • Publication number: 20120063351
    Abstract: The present invention relates to a method and device for monitoring the control channel in a multiple carrier system. A terminal determines an extended search space comprising a plurality of sub-search spaces, and each of the plurality of sub-search spaces corresponds to at least one of a plurality of scheduled component carriers. The terminal monitors a downlink control channel for the scheduled component carrier corresponding to each of the plurality of sub-search spaces. At least one of the plurality of sub-search spaces is a shared sub-search space corresponding to at least two of the plurality of scheduled component carriers.
    Type: Application
    Filed: May 14, 2010
    Publication date: March 15, 2012
    Inventors: So Yeon KIM, Sung Ho Moon, Jae Hoon Chung, Yeong Hyeon Kwon, Han Gyu Cho
  • Publication number: 20120063386
    Abstract: Provided are a method for receiving information on a relay node zone and reference signals for a relay node from a base station, and a relay node device using same. The relay node can receive information on at least one start point from the start points of a Relay-Physical Downlink Control Channel (R-PDCCH) and a Relay-Physical Downlink Shared Channel (R-PDSCH) for transmitting a signal from a base station to a relay node in a specific downlink subframe. Alternatively, the relay node can implicitly recognize the start points of the R-PDCCH and R-PDSCH set in advance. The relay node can recognize a signal from the base station in the specific downlink subframe based on the start point information after the time corresponding to at least one of the start points of the R-PDCCH and R-PDSCH. Also, the relay node can decode signals transmitted from a base station after the corresponding timing.
    Type: Application
    Filed: May 7, 2010
    Publication date: March 15, 2012
    Inventors: Kyu Jin Park, Sungho Moon, Yeong Hyeon Kwon, Jae Hoon Chung
  • Publication number: 20120057796
    Abstract: There are provided an apparatus and a method of reducing noise. The apparatus of reducing noise includes: an edge determining module determining whether each pixel of an image corresponds to an edge; a low pass filter module performing low pass filtering of the image in two directions, i.e.
    Type: Application
    Filed: May 31, 2011
    Publication date: March 8, 2012
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Gyu Won KIM, Ho Seop JEONG, In Taek SONG, Kyoung Joong MIN, Tae Hyeon KWON
  • Publication number: 20120057498
    Abstract: The present invention relates to a wireless communication system, and more particularly, to an apparatus for positioning a user equipment and method thereof. The present invention includes receiving, from a plurality of base stations including a serving cell, a predetermined number of consecutive positioning subframes in a radio frame at a predetermined period, each of the consecutive positioning subframe including a reference signal, measuring a time of arrival of the positioning subframes by using the reference signal, and transmitting a result of the measured time of arrival of the positioning subframe to the serving cell, wherein the predetermined period is set to be larger than a generation period of the reference signal and wherein sequences of the reference signals included in the consecutive positioning subframes are different from each other.
    Type: Application
    Filed: April 30, 2010
    Publication date: March 8, 2012
    Inventors: Seung Hee Han, Jae Hoon Chung, Yeong Hyeon Kwon
  • Patent number: 8130711
    Abstract: There is provided a method for allocating pilots to a sub-frame. The sub-frame includes a plurality of blocks in time domain. The method includes allocating a data demodulation (DM) pilot used for demodulating data to two blocks spaced not contiguous with each other, and allocating a channel quality (CQ) pilot. System capacity can be increased, and degradation of performance incurred by a channel estimation error can be minimized.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: March 6, 2012
    Assignee: LG Electronics Inc.
    Inventors: Min Seok Noh, Seung Hee Han, Yeong Hyeon Kwon, Hyun Woo Lee, Dong Chul Kim
  • Patent number: 8130815
    Abstract: Method for generating reference signal sequence using grouping is explained. In this method, base sequences are grouped such that each group contains at least one base sequence of each length, so UE(s) can use various length sequences as a reference signal. And in this method, inter cell interference caused by using various length sequence as a reference signal sequence can be minimized by grouping sequences having the high cross correlation relation.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: March 6, 2012
    Assignee: LG Electronics Inc.
    Inventors: Min Seok Noh, Seung Hee Han, Yeong Hyeon Kwon, Hyun Woo Lee, Dong Cheol Kim, Jin Sam Kwak
  • Patent number: 8130863
    Abstract: A sequence generation method for allowing a reception end to effectively detect a sequence used for a specific channel of an OFDM communication system, and a signal transmission/reception method using the same are disclosed. During the sequence generation, an index is selected from among the index set having the conjugate symmetry property between indexes, and a specific part corresponding to the frequency “0” is omitted from a transmitted signal. In addition, a reception end can calculate a cross-correlation value between a received (Rx) signal and each sequence using only one cross-correlation calculation based on the conjugate symmetry property.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: March 6, 2012
    Assignee: LG Electronics Inc.
    Inventors: Seung Hee Han, Min Seok Noh, Yeong Hyeon Kwon, Hyun Woo Lee, Dong Cheol Kim, Jin Sam Kwak
  • Publication number: 20120051319
    Abstract: The present invention relates to a method for receiving control information, comprising: receiving a resource indicator concerning DeModulation Reference Signal (DM-RS) through a DM-RS field of a Physical Downlink Control Channel (PDCCH); and mapping the resource indicator regarding the DM-RS into the control information according to a predetermined condition, wherein the predetermined condition represents whether information that indicates mapping of the DM-RS and the control information is included in the PDCCH.
    Type: Application
    Filed: May 19, 2010
    Publication date: March 1, 2012
    Inventors: Yeong Hyeon Kwon, Min Seok Noh, Jae Hoon Chung, Seung Hee Han, So Yeon Kim
  • Publication number: 20120051306
    Abstract: The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and to an apparatus in which a terminal processes a downlink control channel in a wireless communication system that supports carrier aggregation. The method comprises the steps of: checking a plurality of carrier groups from a plurality of downlink component carriers (DL CCs); receiving a control information region through at least a portion of the plurality of DL CCs; performing blind decoding on control channels in the control information region in a first carrier group; and performing blind decoding on control channels in the control information region in a second carrier group. The present invention also relates to an apparatus for the method.
    Type: Application
    Filed: March 20, 2010
    Publication date: March 1, 2012
    Inventors: Jae Hoon Chung, Han Gyu Cho, So Yeon Kim, Yeong Hyeon Kwon
  • Publication number: 20120051458
    Abstract: A method for a user equipment to transmit a random access preamble sequence to a base station includes transmitting the random access preamble sequence generated from a Constant Amplitude Zero Auto Correlation (CAZAC) sequence to the base station, wherein the CAZAC sequence is cyclic shifted according to one of applicable cyclic shift values defined considering a value (M) representing a Doppler shift of one subcarrier spacing and a cyclic shift unit length (T), and wherein when the value (M) meets a condition of ‘P*T?M<(P+1)*T’ where (P) is an integer, one or more adjacent cyclic shift values among the applicable cyclic shift values are defined as a group and a number of the adjacent cyclic shift values within the group equals to (P).
    Type: Application
    Filed: October 28, 2011
    Publication date: March 1, 2012
    Inventors: Hyun Woo Lee, Min Seok Noh, Yeong Hyeon Kwon, Seung Hee Han, Dong Cheol Kim, Jin Sam Kwak, Dragan Vujcic
  • Publication number: 20120051451
    Abstract: The present invention relates to a method wherein a terminal transmits control information in a wireless communication system, and comprises the steps of: receiving a first reference signal, which is transmitted according to a first transmission period, from a base station; receiving a second reference signal, which is transmitted according to a second transmission period, from the base station; performing channel estimation using at least the first or second reference signals; and reporting control information, which includes at least channel information on the first reference signal or channel information on the second reference signal, to the base station according to the channel estimation result, wherein the control information may be configured such that the channel information on the first reference signal and the channel information on the second reference signal are multiplexed or such that any one of same is dropped.
    Type: Application
    Filed: May 10, 2010
    Publication date: March 1, 2012
    Inventors: Yeong Hyeon Kwon, Moon Il Lee, Han Kyu Cho, Jae Hoon Chung, So Yeon Kim
  • Publication number: 20120045011
    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: Application
    Filed: October 31, 2011
    Publication date: February 23, 2012
    Inventors: Hyun Woo Lee, Min Seok Noh, Yeong Hyeon Kwon, Seung Hee Han, Dong Cheol Kim, Jin Sam Kwak, Dragan Vujcic
  • Publication number: 20120044921
    Abstract: Embodiments of the present invention are directed to a method and apparatus for transmitting and receiving a control signal (for example, PDCCH signal) in an asymmetric multicarrier environment. The method for transmitting a control signal for an asymmetric multicarrier in a wireless connection system according to one embodiment of the present invention comprises: determining the size of a carrier indicator field (CIF) indicating a downlink component carrier (DL CC) by which downlink data is transmitted, on the basis of a maximum value of the number of DL CCs and of the number of uplink component carriers (UL CCs) being managed in a base station; transmitting the CIF on a 1st DL CC to a terminal through a physical downlink control channel (PDCCH); and transmitting downlink data on a 2nd DL CC indicated by the CIF to the terminal through a physical downlink shared channel (PDSCH).
    Type: Application
    Filed: April 26, 2010
    Publication date: February 23, 2012
    Inventors: Jae Hoon Chung, So Yeon Kim, Sungho Moon, Seunghee Han, Yeong Hyeon Kwon
  • Publication number: 20120044833
    Abstract: Disclosed is a method for configuring a ranging channel in various frame structures and using the same in a communication system. A ranging channel is effectively configured according to a data structure, namely, frame structure, transmitted and received between a mobile station (MS) and a base station (BS) in a wireless communication system, and ranging information is transmitted therethrough to thereby improve performance of a communication channel and resource efficiency. In the wireless communication system, a ranging channel is configured by using a time interval, such as an idle time, an idle symbol, an RTG, a TTG, and the like, not actually used for transmission of data or a signal in a data structure, namely, in a frame structure, transmitted and received between an MS and a BS, to transmit ranging information, so the channel performance and resource efficiency can be improved.
    Type: Application
    Filed: January 5, 2010
    Publication date: February 23, 2012
    Applicant: LG ELECTRONICS INC.
    Inventors: Hyun-Woo Lee, Min-Seok Noh, Yeong-Hyeon Kwon, Jin-Sam Kwak, Dong-Cheol Kim, Sung-Ho Moon, Seung-Hee Han