Patents by Inventor Ki Jun Kim

Ki Jun Kim 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).

  • Reference signal transmission method for downlink multiple input multiple output system
    Patent number: 10298369
    Abstract: A reference signal transmission method in a downlink MIMO system is disclosed. The downlink MIMO system supports a first UE supporting N transmission antennas among a total of M transmission antennas (where M>N) and a second UE supporting the M transmission antennas. The method includes transmitting, by a base station (BS), subframe-associated information which designates a first subframe in which data for the first UE and the second UE is transmitted and a second subframe in which data only for the second UE can be transmitted within a radio frame having a plurality of subframes, and transmitting the first subframe and the second subframe. Reference signals corresponding to antenna ports ‘0’ to ‘N?1’ of the N antennas are mapped to the first subframe, and reference signals corresponding to antenna ports ‘0’ to ‘M?1’ of the M antennas are mapped to the second subframe.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: May 21, 2019
    Assignee: LG Electronics Inc.
    Inventors: Jung Hoon Lee, Dong Youn Seo, Ki Jun Kim, Joon Kui Ahn
  • Method and an apparatus for providing channel quality information in a wireless communication system
    Patent number: 10291376
    Abstract: A method for transmitting channel quality information for a downlink channel, the method includes receiving, by a user equipment (UE), configuration information on periodic channel state information (CSI) reporting by higher layer signaling; determining, by the UE, a channel quality information index considering the configuration information on CSI reporting; and transmitting the determined channel quality information index to a base station, wherein the channel quality information index is determined based on a number of available resource element, and wherein an assumption of no resource element allocated for a Channel Status Information-Reference Signal (CSI-RS) is applied when the number of the available resource element is determined.
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: May 14, 2019
    Assignee: LG Electronics Inc.
    Inventors: In Kwon Seo, Dae Won Lee, Ki Jun Kim
  • Method for transmitting pilot for multiple carrier system
    Patent number: 10270571
    Abstract: A method of transmitting pilot signals in a system which performs communication using two or more earners comprises transmitting first pilots and second pilots from at least one user equipment to a base station, the first and second pilots, which are transmitted from the at least one user equipment, being multiplexed by code division multiplexing, and the first and second pilots, which are transmitted from a specific user equipment, having different transmission powers, and transmitting data from the at least one user equipment to the base station depending on the first pilots and the second pilots. Since many UEs can transmit CQ pilots, exact channel estimation can be performed and thus communication efficiency can be improved.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: April 23, 2019
    Assignee: LG Electronics Inc.
    Inventors: Young Woo Yun, Hak Seong Kim, Bong Hoe Kim, Joon Kui Ahn, Dong Youn Seo, Jung Hoon Lee, Ki Jun Kim, Suk Hyon Yoon, Eun Sun Kim
  • Layer mapping method and data transmission method for MIMO system
    Patent number: 10263676
    Abstract: A method for indicating a combination between a codeword and a layer in a MIMO communication, system, a layer mapping method, and a data transmission method using the same are disclosed. A minimum number of codeword-layer mapping combinations from among all available combinations based on the’ numbers of all codewords and all layers are pre-defined in consideration of a ratio of a codeword to a layer, a reception performance of a receiver, and reduction of combinations, so that a data transmission method using the predefined combinations is implemented. If a specific one codeword is mapped to at least two layers, a diversity gain can be acquired.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: April 16, 2019
    Assignee: LG Electronics Inc.
    Inventors: Dong Wook Roh, Bong Hoe Kim, Young Woo Yun, Dong Youn Seo, Joon Kui Ahn, Ki Jun Kim
  • Method and apparatus for transmitting uplink signals using multi-antenna
    Patent number: 10236957
    Abstract: A method and apparatus for allowing a UE to transmit uplink signals using a MIMO scheme are disclosed. In order to maintain good Peak power to Average Power Ratio (PAPR) or Cubic Metric (CM) properties when the UE transmits uplink signals using the MIMO scheme, the UE uses a precoding scheme based on a precoding matrix established in a manner that one layer is transmitted to each antenna in specific rank transmission.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: March 19, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Yu Jin Noh, Ki Jun Kim, Dong Wook Roh, Byeong Woo Kang, Dae Won Lee, Bong Hoe Kim, Dong Youn Seo
  • METHOD FOR TRANSMITTING DOWNLINK CONTROL CHANNEL IN A MOBILE COMMUNICATION SYSTEM AND A METHOD FOR MAPPING THE CONTROL CHANNEL TO PHYSICAL RESOURCE USING BLOCK INTERLEAVER IN A MOBILE COMMUNICATIONS SYSTEM
    Publication number: 20190069279
    Abstract: A method for transmitting a downlink control channel in a mobile communication system and a method for mapping the control channel to physical resources using a block interleaver are provided. In order to transmit a downlink control channel in a mobile communication system, information bits are modulated to generate one or more modulation symbols according to a specific modulation scheme, the modulation symbols are interleaved using a block interleaver, and the interleaved modulated symbols are mapped to resource elements allocated for transmission of at least one control channel in a subframe, thereby transmitting the at least one control channel.
    Type: Application
    Filed: October 12, 2018
    Publication date: February 28, 2019
    Inventors: So Yeon Kim, Young Woo Yun, Ki Jun Kim, Moon Il Lee, Hyun Soo Ko, Jae Hoon Chung, Ji Ae Seok, Seung Hyun Kang, Suk Hyon Yoon, Joon Kui Ahn
  • AIR CONDITIONER
    Publication number: 20190056120
    Abstract: An air conditioner includes a heat exchanger configured to exchange heat with air introduced into a housing and a blowing fan configured to blow the air which is heat-exchanged with the heat exchanger to outside of the housing. The air conditioner may control a first and a second doors configured to open or close a first and second blowing ports provided in the housing and a guide blade configured to control paths in the housing, so that the air conditioner may blow the air of various flow.
    Type: Application
    Filed: August 1, 2017
    Publication date: February 21, 2019
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang Ki CHO, Ki Jun KIM, Dae Dong KIM, Chang Heon LEE, Moon Sun SHIN, Young Lae JO
  • Method of operating relay station in wireless communication system
    Patent number: 10206222
    Abstract: A method of operating a relay station in a wireless communication system is provided. The method includes operating in a first mode comprising a first sub-mode and a second sub-mode, in the first sub-mode a first downlink and a first uplink between a base station and the relay station being simultaneously activated, in the second sub-mode a second downlink and a second uplink between the relay station and a mobile station being simultaneously activated, and operating in a second mode comprising a third sub-mode and a fourth sub-mode, in the third sub-mode the first downlink and the second uplink being simultaneously activated, in the fourth sub-mode the first uplink and the second downlink being simultaneously activated.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: February 12, 2019
    Assignee: LG Electronics Inc.
    Inventors: Hak Seong Kim, Ki Jun Kim, Yu Jin Noh, Dae Won Lee, Bong Hoe Kim
  • Method for allocating backhaul link resources in relay communication system, and method and apparatus for transmitting and receiving data using same
    Patent number: 10206205
    Abstract: A method is provided for transmitting a downlink signal by a base station in a wireless communication system. A configuration of orthogonal frequency division multiplexing (OFDM) symbols is transmitted for a first partition of a subframe through higher layer signaling, and a Relay-Physical Downlink Control Channel (R-PDCCH) contained in at least the first partition of the subframe is also transmitted. If the R-PDCCH contains a downlink assignment, the first partition of the subframe is configured not to be used for a transmission of a Physical Downlink Shared Channel (PDSCH) corresponding the R-PDCCH.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: February 12, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Han-Byul Seo, Byoung-Hoon Kim, Ki-Jun Kim, Hak-Seong Kim
  • DECODING CONTROL INFORMATION RECEIVED OVER A CONTROL CHANNEL
    Publication number: 20190029008
    Abstract: A User Equipment (UE) receives control information via a Physical Downlink Control Channel (PDCCH) at subframe k. A decoder monitors a set of PDCCH candidates a UE-specific search space, among the search spaces, at each of aggregation levels (L) of 1, 2, 4 and 8 control channel elements (CCEs). The UE-specific search space is given based on a modulus operation using variables Yk and C for the subframe k. Yk is defined by: Yk=(A*Yk?1+B) mod D. C is determined based on the number of CCEs (NCCE) divided by the aggregation level (L). A, B, and D are predetermined constant values regardless of the aggregation levels (L). Y?1 is determined based on a UE identifier having 16-bits when k=0. The decoder decodes the control information of the PDCCH.
    Type: Application
    Filed: September 26, 2018
    Publication date: January 24, 2019
    Inventors: Dae Won LEE, Ki Jun KIM, Dong Wook ROH, Yu Jin NOH, Joon Kui AHN, Jung Hoon LEE
  • METHOD FOR ACQUIRING RESOURCE REGION INFORMATION FOR PHICH AND METHOD OF RECEIVING PDCCH
    Publication number: 20190014578
    Abstract: A method of acquiring information on a resource region for transmitting PHICH and a method of receiving PDCCH using the same are disclosed. The resource region for transmitting the PHICH can be specified by first information corresponding to the per-sub frame PHICH number and second information corresponding to a duration of the PHICH within the subframe. The first Information can be specified into a form resulting from multiplying a predetermined basic number by a specific constant. And, the specific constant can be transmitted via PBCH. Moreover, the second information can be acquired from the PBCH as well.
    Type: Application
    Filed: September 13, 2018
    Publication date: January 10, 2019
    Applicant: LG ELECTRONICS INC.
    Inventors: Joon Kui AHN, Bong Hoe KIM, Young Woo YUN, Ki Jun KIM, Jung Hoon LEE, Dae Won LEE, Dong Youn SEO, Dong Wook ROH, Suk Hyon YOON
  • Method for transmitting downlink control channel in a mobile communication system and a method for mapping the control channel to physical resource using block interleaver in a mobile communications system
    Patent number: 10142979
    Abstract: A method for transmitting a downlink control channel in a mobile communication system and a method for mapping the control channel to physical resources using a block interleaver are provided. In order to transmit a downlink control channel in a mobile communication system, information bits are modulated to generate one or more modulation symbols according to a specific modulation scheme, the modulation symbols are interleaved using a block interleaver, and the interleaved modulated symbols are mapped to resource elements allocated for transmission of at least one control channel in a subframe, thereby transmitting the at least one control channel.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: November 27, 2018
    Assignee: LG Electronics Inc.
    Inventors: So Yeon Kim, Young Woo Yun, Ki Jun Kim, Moon Il Lee, Hyun Soo Ko, Jae Hoon Chung, Ji Ae Seok, Seung Hyun Kang, Suk Hyon Yoon, Joon Kui Ahn
  • METHOD OF TRANSMITTING REFERENCE SIGNAL AND TRANSMITTER USING THE SAME
    Publication number: 20180324019
    Abstract: A method and device for generating a reference signal sequence are discussed. The method includes generating the reference signal sequence, and transmitting the reference signal sequence, wherein the reference signal sequence is defined by a specific equation based on a pseudo-random sequence.
    Type: Application
    Filed: June 29, 2018
    Publication date: November 8, 2018
    Applicant: LG ELECTRONICS INC.
    Inventors: Jung Hoon LEE, Dae Won LEE, Ki Jun KIM, Joon Kui AHN
  • Decoding control information received over a control channel
    Patent number: 10123321
    Abstract: A User Equipment (UE) receives a Physical Downlink Control Channel (PDCCH) at subframe k and decodes at the subframe k a set of PDCCH candidates including L control channel elements (CCEs). The L CCEs are contiguously located from a position given by using a variable of Yk and a modulo (N/L) operation, where N represents a total number of CCEs in the subframe k, Yk is defined by Yk=(A*Yk?1)mod D, and A and D are predetermined constant values. When k=0, Y?1 is determined based on a UE identifier having 16-bits.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: November 6, 2018
    Assignee: Optis Cellular Technology, LLC
    Inventors: Dae Won Lee, Ki Jun Kim, Dong Wook Roh, Yu Jin Noh, Joon Kui Ahn, Jung Hoon Lee
  • Method for acquiring resource region information for PHICH and method of receiving PDCCH
    Patent number: 10117243
    Abstract: A method of acquiring information on a resource region for transmitting PHICH and a method of receiving PDCCH using the same are disclosed. The resource region for transmitting the PHICH can be specified by first information corresponding to the per-sub frame PHICH number and second information corresponding to a duration of the PHICH within the subframe. The first Information can be specified into a form resulting from multiplying a predetermined basic number by a specific constant. And, the specific constant can be transmitted via PBCH. Moreover, the second information can be acquired from the PBCH as well.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: October 30, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Joon Kui Ahn, Bong Hoe Kim, Young Woo Yun, Ki Jun Kim, Jung Hoon Lee, Dae Won Lee, Dong Youn Seo, Dong Wook Roh, Suk Hyon Yoon
  • Air conditioning equipment
    Patent number: 10101058
    Abstract: An air conditioning equipment includes a housing comprising a heat exchanger therein, a water container mounted to, and dismounted from a receiving portion of the housing and to collect a condensate generated by the heat exchanger, and a valve configured to selectively open and close a discharge port by being interfered with a portion of the water container according to the mounting and the dismounting of the water container to or from the receiving portion of the housing. The valve is inserted within the receiving portion of the housing through the discharge port in order to reduce a protruded length that is interfered by the portion of the water container.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: October 16, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ki-jun Kim, Won-hee Lee, Sang-ki Cho, Kwon-jin Kim, Yun-suk Park, Kang-ho Choi
  • AIR CONDITIONER
    Publication number: 20180274814
    Abstract: An air conditioner includes a discharge blade configured to move between a guide position at which a direction of air blown from a blower fan and discharged to an outlet is controlled, and a closing position at which the outlet is closed, wherein the discharge blade includes a plurality of blade holes through which the air is discharged through the discharge blade at the closing position, wherein the discharge blade moves between the guide position and the closing position and controls an air flow from the blower fan to a discharge plate or the outlet. Through this configuration, an air flow discharged to the outside of the housing can be controlled by operation of the discharge blade.
    Type: Application
    Filed: May 30, 2018
    Publication date: September 27, 2018
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Sang Ki CHO, Ki Jun KIM, Dae Dong KIM, Chang Heon LEE, Moon Sun SHIN, Young Lae JO
  • Frequency hopping pattern and method for transmitting uplink signals using the same
    Patent number: 10084508
    Abstract: A method for performing uplink transmission in a time domain transmission unit includes receiving, from a base station, hopping-mode information indicating whether a frequency hopping is an inter-slot hopping or an inter-subframe hopping and performing the uplink transmission using a resource block in the time domain transmission unit.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: September 25, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Joon Kui Ahn, Nam Yul Yu, Young Woo Yun, Ki Jun Kim, Hyun Wook Park
  • Method of resolving overlaps in data transmission and user equipment therefor
    Patent number: 10070436
    Abstract: A method of a user equipment (UE) operating in a wireless communication system is provided. The UE transmits a first subframe. The UE transmits a second subframe following the first subframe consecutively. When the first subframe and the second subframe are overlapped, the first subframe is transmitted completely while the second subframe is transmitted partially.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: September 4, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Joon Kui Ahn, Ki Jun Kim, Bin Chul Ihm, Young Woo Yun
  • Control signal transmitting method and apparatus in relay station
    Patent number: RE47052
    Abstract: A method of transmitting a control signal of a relay station is provided. The method includes: receiving a control signal and data from a base station in a first subframe; and transmitting an acknowledgement/negative acknowledgement (ACK/NACK) signal for the data to the base station in a second subframe, wherein a radio resource for transmitting the ACK/NACK signal is determined by a radio resource to which the control signal received in the first subframe is allocated and by a logical physical uplink control channel (PUCCH) index received by using a higher layer signal.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: September 18, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Hak Seong Kim, Han Byul Seo, Ki Jun Kim