Patents by Inventor Ju JI

Ju JI 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: 20150223240
    Abstract: A method and an apparatus for transmitting Hybrid Automatic Repeat reQuest (HARQ) Acknowledgement/Negative Acknowledgement (ACK/NACK) are provided. The HARQ ACK/NACK transmission method includes receiving a Physical Downlink Shared Channel (PDSCH) in a subframe of a first cell, identifying an ACK subframe for transmitting HARQ ACK/NACK corresponding to the PDSCH, and transmitting the HARQ ACK/NACK in the identified ACK subframe of a second cell.
    Type: Application
    Filed: April 13, 2015
    Publication date: August 6, 2015
    Inventors: Seung Hoon CHOI, Joon Young CHO, Jin Kyu HAN, Young Bum KIM, Hyoung Ju JI
  • Patent number: 9094968
    Abstract: Methods and apparatus are provided for the transmission of physical downlink control signaling. In one method, a User Equipment (UE) receives information associated with a physical resource block (PRB) for enhanced physical downlink control channel (EPDCCH) from a base station. Based on either first information received on physical control format indicator channel (PCFICH) or second information received on higher layer signaling, the UE determines a starting orthogonal frequency division multiple (OFDM) symbol on which EPDCCH transmission starts. The UE receives control information on the EPDDCH based on the information associated with the PRB and the determined starting OFDM symbol.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: July 28, 2015
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Aris Papasakellariou, Joon-Young Cho, Hyoung-Ju Ji
  • Publication number: 20150201407
    Abstract: Methods and apparatuses are provided for wireless communication. Control symbols are mapped to a plurality of resource element groups (REGs), which are not assigned to a physical channel format indication channel (PCFICH) or a Physical hybrid automatic repeat request indicator channel (PHICH). The REGs are allocated in a time first manner. The mapped control symbols are transmitted on a packet dedicated control channel (PDCCH). Each of the REGs in a first orthogonal frequency division multiplexing (OFDM) symbol of a first slot in a subframe comprises two resource elements (REs) for transmission of a cell-specific reference signal and four REs for transmission of a control signal.
    Type: Application
    Filed: January 21, 2015
    Publication date: July 16, 2015
    Inventors: Jin-Kyu Han, Ju-Ho Lee, Hwan-Joon Kwon, Young-Bum Kim, Byung-Sik Kim, Hyoung-Ju Ji
  • Patent number: 9084272
    Abstract: An apparatus and method for transmitting/receiving reference signal transmission information in a cellular radio communication system using a Cooperative Multi-Point (CoMP) scheme is provided. In the reference signal transmission information transmission method, a Central Control Apparatus (CCA) transmits measurement set information related to a measurement set including at least one reference signal resource unit through which a reference signal is transmitted, and reference signal transmission timing information including information related to a timing at which the reference signal is transmitted to a User Equipment (UE), and transmits reference signal non-transmission timing information including information related to a timing at which the reference signal is not transmitted through the reference signal resource unit to the UE.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: July 14, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyo-Jin Lee, Youn-Sun Kim, Ki-Il Kim, Ju-Ho Lee, Hyoung-Ju Ji, Seung-Hoon Choi
  • Publication number: 20150172039
    Abstract: A method, base station, and terminal employing time division duplex and carrier aggregation are disclosed. The method by the base station includes transmitting, to a terminal, scheduling information on a control channel of a first cell, and transmitting, to the terminal, data on a shared channel of a second cell based on the scheduling information. The scheduling information is transmitted in a first downlink subframe or a first subframe including downlink pilot time slot (DwPTS) based on first subframe configuration information of the first cell. The data is transmitted in a second downlink subframe or a second subframe including DwPTS corresponding to the first downlink subframe or the first subframe. The first subframe configuration information of the first cell is different from second subframe configuration information of the second cell.
    Type: Application
    Filed: February 27, 2015
    Publication date: June 18, 2015
    Inventors: Young Bum KIM, Joon Young CHO, Jin Kyu HAN, Seung Hoon CHOI, Youn Sun KIM, Hyoung Ju JI
  • Publication number: 20150163776
    Abstract: Methods and apparatuses are provided for wireless communication. Control symbols are mapped to a plurality of resource element groups (REGs) which is not assigned to a physical channel format indication channel (PCFICH) or a physical hybrid automatic repeat request indicator channel (PHICH). The REGs are allocated based on a time first manner. The mapped control symbols are transmitted on a packet dedicated control channel (PDCCH). A number of a plurality of resource elements (REs) in each of the REGs depends on an index of an orthogonal frequency division multiplexing (OFDM) symbol and a number of configured reference signals.
    Type: Application
    Filed: February 17, 2015
    Publication date: June 11, 2015
    Inventors: Jin-Kyu HAN, Ju-Ho LEE, Hwan-Joon KWON, Young-Bum KIM, Byung-Sik KIM, Hyoung-Ju JI
  • Publication number: 20150163778
    Abstract: Methods and apparatuses are provided for wireless communication. Control symbols are mapped to a plurality of resource element groups (REGs) which is not assigned to a physical channel format indication channel (PCFICH) or a physical hybrid automatic repeat request indicator channel (PHICH). The mapped control symbols are transmitted on a packet dedicated control channel (PDCCH). A number of a plurality of resource elements (REs) in each of the REGs depends on an index of an orthogonal frequency division multiplexing (OFDM) symbol and a number of configured reference signals. A number of the REGs in a physical resource block (PRB) on an OFDM symbol depends on the index of the OFDM symbol and the number of configured reference signals.
    Type: Application
    Filed: February 17, 2015
    Publication date: June 11, 2015
    Inventors: Jin-Kyu HAN, Ju-Ho LEE, Hwan-Joon KWON, Young-Bum KIM, Byung-Sik KIM, Hyoung-Ju JI
  • Publication number: 20150163777
    Abstract: Methods and apparatuses are provided for wireless communication. Control symbols are mapped to a plurality of resource element groups (REGs) which is not assigned to a physical channel format indication channel (PCFICH) or a physical hybrid automatic repeat request indicator channel (PHICH). The REGs are allocated based on a time first manner. The mapped control symbols are transmitted on a packet dedicated control channel (PDCCH). A number of the REGs in a physical resource block (PRB) on an orthogonal frequency division multiplexing (OFDM) symbol depends on an index of the OFDM symbol and a number of configured reference signals.
    Type: Application
    Filed: February 17, 2015
    Publication date: June 11, 2015
    Inventors: Jin-Kyu HAN, Ju-Ho Lee, Hwan-Joon Kwon, Young-Bum Kim, Byung-Sik Kim, Hyoung-Ju Ji
  • Publication number: 20150163787
    Abstract: Methods and apparatuses are provided for wireless communication. Control symbols are mapped to a plurality of resource element groups (REGs) which is not assigned to a physical channel format indication channel (PCFICH) or a physical hybrid automatic repeat request indicator channel (PHICH). The mapped control symbols are transmitted on a packet dedicated control channel (PDCCH). A physical resource block (PRB) on a second orthogonal frequency division multiplexing (OFDM) symbol in a first slot in a subframe includes three REGs if one or two cell-specific reference signals are configured, and the PRB on the second OFDM symbol of the first slot in the subframe includes two REGs if four cell-specific reference signals are configured.
    Type: Application
    Filed: February 17, 2015
    Publication date: June 11, 2015
    Inventors: Jin-Kyu HAN, Ju-Ho LEE, Hwan-Joon KWON, Young-Bum KIM, Byung-Sik KIM, Hyoung-Ju JI
  • Patent number: 9049714
    Abstract: An inter-cell interference coordination method and apparatus is provided for a heterogeneous network system based on Orthogonal Frequency Division Multiplexing (OFMD) communication. The inter-cell interference coordination method and apparatus exchanges two different types of inter-cell interference coordination messages between base stations to adaptively use the frequency division and time division schemes, thereby coordinating inter-cell interference of control channels transmitted randomly in distributed manner.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: June 2, 2015
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Hyoung Ju Ji, Joon Young Cho
  • Publication number: 20150117302
    Abstract: A method and apparatus for receiving control channel resources of a relay by the relay is provided. The method includes receiving resource information including a resource block assignment information related to resource blocks allocated to the relay; and receiving control channel according to the resource information.
    Type: Application
    Filed: January 9, 2015
    Publication date: April 30, 2015
    Inventors: Hyoung Ju JI, Joon Young CHO
  • Patent number: 9007964
    Abstract: The present invention relates to a method for defining, in a TDD wireless communication system in which broadband is configured by means of carrier aggregation, transceiving timing for a data channel and a control channel when cross-carrier scheduling is implemented.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: April 14, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young Bum Kim, Joon Young Cho, Jin Kyu Han, Seung Hoon Choi, Youn Sun Kim, Hyoung Ju Ji
  • Patent number: 9008014
    Abstract: A method and an apparatus for transmitting Hybrid Automatic Repeat reQuest (HARQ) Acknowledgement/Negative Acknowledgement (ACK/NACK) are provided. The HARQ ACK/NACK transmission method includes receiving a Physical Downlink Shared Channel (PDSCH) in a subframe of a first cell, identifying an ACK subframe for transmitting HARQ ACK/NACK corresponding to the PDSCH, and transmitting the HARQ ACK/NACK in the identified ACK subframe of a second cell.
    Type: Grant
    Filed: February 17, 2012
    Date of Patent: April 14, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seung Hoon Choi, Joon Young Cho, Jin Kyu Han, Young Bum Kim, Hyoung Ju Ji
  • Publication number: 20150085802
    Abstract: Methods and apparatus are provided for the transmission of physical downlink control signaling. In one method, a User Equipment (UE) receives information associated with a physical resource block (PRB) for enhanced physical downlink control channel (EPDCCH) from a base station. Based on either first information received on physical control format indicator channel (PCFICH) or second information received on higher layer signaling, the UE determines a starting orthogonal frequency division multiple (OFDM) symbol on which EPDCCH transmission starts. The UE receives control information on the EPDDCH based on the information associated with the PRB and the determined starting OFDM symbol.
    Type: Application
    Filed: November 26, 2014
    Publication date: March 26, 2015
    Inventors: Aris Papasakellariou, Joon-Young Cho, Hyoung-Ju Ji
  • Patent number: 8964689
    Abstract: Disclosed are a method and an apparatus for operating multi-band and multi-cell. An Enhanced Node B (eNB) transmits a synchronization channel and a broadcasting channel for narrow-band user equipments (UEs) through a first band narrower than a system band, the first band being located in a center band of the system band, and transmits a control channel for scheduling a data channel for a first narrow-band UE which is one of the narrow-band UEs through a second band equal to or wider than the first band, the second band not overlapping the first band within the system band. The first band is designed to be matched to a band where the synchronization channel and the broadcasting channel of a host cell using an entire system band are transmitted.
    Type: Grant
    Filed: October 9, 2012
    Date of Patent: February 24, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyoung-Ju Ji, Joon-Young Cho, Young-Bum Kim, Hee-Don Gha, Ju-Ho Lee
  • Patent number: 8964676
    Abstract: A method and apparatus are provided for transmitting system information in a mobile communication system. The method includes configuring system information including first antenna configuration information and second antenna configuration information, and broadcasting the system information. The first antenna configuration information includes information about a number of antennas of a base station.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: February 24, 2015
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Hyoung-Ju Ji, Joon-Young Cho, Young-Bum Kim, Seung-Hoon Choi, Sang-Min Ro, Ju-Ho Lee
  • Publication number: 20150043673
    Abstract: A feedback information transmission/reception method for use in a mobile communication system is provided. The feedback information transmission method includes receiving configuration information on at least two reference signals and feedback configuration information for use in generating feedback information based on the at least two reference signals from a base station, receiving the at least two reference signals from the base station, measuring the at least two reference signals received, generating the feedback information based on the measurement result according to the feedback configuration information, and transmitting the feedback information to the base station.
    Type: Application
    Filed: August 7, 2014
    Publication date: February 12, 2015
    Inventors: Hyo Jin Lee, Youn Sun Kim, Ju Ho Lee, Young Bum Kim, Hyoung Ju Ji
  • Patent number: 8953552
    Abstract: A method is provided for allocating resources of a control channel in a mobile communication system using Orthogonal Frequency Division Multiplexing (OFDM). The method includes, when a time index and a frequency index of available Resource Elements (REs) are defined as l and k, respectively, dividing the available REs in a two-dimensional structure of (k, l); and time-first-allocating each RE to a plurality of RE groups while increasing the time index l for each frequency index k from an initial value up to a predetermined range.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: February 10, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-Kyu Han, Ju-Ho Lee, Hwan-Joon Kwon, Young-Bum Kim, Byung-Sik Kim, Hyoung-Ju Ji
  • Publication number: 20150036606
    Abstract: The present invention is a method in which a base station transmits a control channel signal in an orthogonal frequency division multiplexing (OFDM) communication system, wherein the method configures a physical resource block (PRB) from multiple resource elements (REs) for a control channel signal for scheduling, allocates at least one RE to a response channel signal, the at least one RE occupying the time domain the same as that of the RE used in a resource signal transmission in a data channel region of the PRB and occupying the frequency domain nearest to the RE used in the reference signal transmission, and transmits the control channel signal for scheduling and the response channel signal.
    Type: Application
    Filed: January 22, 2013
    Publication date: February 5, 2015
    Inventors: Hyoung-Ju Ji, Youn-Sun Kim, Ju-Ho Lee, Joon-Young Cho, Young-Bum Kim
  • Publication number: 20150023231
    Abstract: Disclosed are a method and an apparatus for transceiving a channel related to a terminal that supports half duplex transmission in a mobile communication system. The terminal receives scheduling information on multi-carriers having different TDD configurations from a base station, determines whether to receive a downlink channel for a plurality of different subframes of each multi-carrier including at least one special subframe, and transceives a channel to/from the base station depending on whether the downlink channel is received or not.
    Type: Application
    Filed: February 27, 2013
    Publication date: January 22, 2015
    Inventors: Hyoung Ju Ji, Young Bum Kim, Joon Young Cho, Seung Hoon Choi