Patents by Inventor Jae-Young Ahn

Jae-Young Ahn 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).

  • Vertical memory devices and methods of manufacturing the same
    Patent number: 9064895
    Abstract: Methods of fabricating vertical memory devices are provided including forming a plurality of alternating insulating layers and sacrificial layers on a substrate; patterning and etching the plurality of insulating layer and sacrificial layers to define an opening that exposes at least a portion of a surface of the substrate; forming a charge trapping pattern and a tunnel insulating pattern on a side wall of the opening; forming a channel layer on the tunnel insulating layer on the sidewall of the opening, the channel layer including N-type impurity doped polysilicon; forming a buried insulating pattern on the channel layer in the opening; and forming a blocking dielectric layer and a control gate on the charge trapping pattern of one side wall of the channel layer.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: June 23, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Bi-O Kim, Toshiro Nakanishi, Jin-Tae Noh, Chang-Woo Sun, Seung-Hyun Lim, Jae-Young Ahn, Ki-Hyun Hwang
  • METHOD AND APPARATUS FOR CELL DISCOVERY
    Publication number: 20150163008
    Abstract: A terminal measures quality of a radio link by using at least one first orthogonal frequency division multiplexing (OFDM) symbol among OFDM symbols excluding an OFDM symbol including a channel state information (CSI)-reference signal (RS).
    Type: Application
    Filed: December 5, 2014
    Publication date: June 11, 2015
    Inventors: Cheulsoon KIM, Young Jo KO, Sung-Hyun MOON, Joonwoo SHIN, Jae Young AHN
  • ADAPTIVE TRANSMISSION DEVICE USING LIMITED FEEDBACK INFORMATION IN A MOBILE COMMUNICATION SYSTEM, AND A METHOD THEREOF
    Publication number: 20150163807
    Abstract: The present invention relates to an adaptive transmitting device using limited feedback information in a mobile communication system, and a method thereof. According to an exemplary embodiment of the present invention, when the base station transmits a pilot signal to the terminal, the terminal generates channel information by using the pilot signal, generates additional channel information from the channel information, and transmits the channel information and the additional channel information to the base station. The base station determines band allocation, power allocation, and modulation methods for each use by using received feedback information, and transmits modulated traffic data to the terminal according to the determined methods.
    Type: Application
    Filed: January 13, 2015
    Publication date: June 11, 2015
    Applicants: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Young-Jo KO, Jae-Young AHN, Kwang-Soon KIM, Jung-Hyoung KWON, Keum-Chan WHANG
  • VERTICAL MEMORY DEVICES AND METHODS OF MANUFACTURING THE SAME
    Publication number: 20150145021
    Abstract: Nonvolatile memory devices include at least four cylindrical-shaped channel regions, which extend vertically from portions of a substrate located at respective vertices of at least one rhomboid when viewed in a vertical direction relative to a surface of the substrate. A charge storage layer (e.g., ONO layer) is provided on an outer sidewall of each of the cylindrical-shaped channel regions. In addition, to achieve a high degree of integration, a plurality of vertically-stacked gate electrodes are provided, which extend adjacent each of the cylindrical-shaped channel regions.
    Type: Application
    Filed: October 17, 2014
    Publication date: May 28, 2015
    Inventors: Byong-Hyun Jang, Dong-Chul Yoo, Ki-Hyun Hwang, Phil-Ouk Nam, Jae-Young Ahn
  • VERTICAL MEMORY DEVICES AND METHODS OF MANUFACTURING THE SAME
    Publication number: 20150137210
    Abstract: A method of manufacturing a vertical memory device includes forming alternating and repeating insulating interlayers and sacrificial layers on a substrate, the sacrificial layers including polysilicon or amorphous silicon, forming channel holes through the insulating interlayers and the sacrificial layers, forming channels in the channel holes, etching portions of the insulating interlayers and the sacrificial layers between adjacent channels to form openings, removing the sacrificial layers to form gaps between the insulating interlayers, and forming gate lines in the gaps.
    Type: Application
    Filed: November 18, 2014
    Publication date: May 21, 2015
    Inventors: Phil-Ouk NAM, Jun-Kyu YANG, Jin-Gyun KIM, Jae-Young AHN, Hun Hyeong LIM, Ki-Hyun HWANG
  • COMMUNICATION METHOD AND APPARATUS IN NETWORK ENVIRONMENT WHERE TERMINAL MAY HAVE DUAL CONNECTIVITY TO MULTIPLE BASE STATIONS
    Publication number: 20150131578
    Abstract: A communication method of a terminal that may have dual connectivity to a first base station and a second base station is provided. The terminal receives a first Radio Resource Control (RRC) message from the first base station only through a first interface between the first base station and the terminal. The terminal transmits a second RRC message to the first base station only through the first interface.
    Type: Application
    Filed: November 11, 2014
    Publication date: May 14, 2015
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Seung-Kwon BAEK, Jae Young AHN
  • SEMICONDUCTOR MEMORY DEVICE AND METHOD OF MANUFACTURING THE SAME
    Publication number: 20150129954
    Abstract: A semiconductor device and a method of manufacturing the same are provided. The semiconductor device includes insulation layers and gate electrodes alternately stacked on a substrate, a vertical channel vertically passing through the insulation layers and the gate electrodes, and a threshold voltage controlling insulation layer, a tunnel insulation layer and a charge storage layer disposed between the vertical channel and the gate electrodes, wherein the threshold voltage controlling insulation layer is disposed between the charge storage layer and the vertical channel and including a material configured to suppress an inversion layer from being formed in the vertical channel.
    Type: Application
    Filed: September 2, 2014
    Publication date: May 14, 2015
    Inventors: Bi O. Kim, Jin-Tae Noh, Su-Jin Shin, Jae-Young Ahn, Ki-Hyun Hwang
  • METHOD FOR TRANSMITTING DISCOVERY SIGNAL IN DEVICE-TO-DEVICE COMMUNICATION
    Publication number: 20150131482
    Abstract: Disclosed is a method for transmitting a discovery signal in device-to-device communication. In phase 1, for devices at a long range, a discovery signal is transmitted by dividing a band like in OFDMA, and in phase 2, for devices at a short range, the discovery signal is transmitted by using a full band.
    Type: Application
    Filed: November 11, 2014
    Publication date: May 14, 2015
    Inventors: Taegyun NOH, Minjoong RIM, Chung Gu KANG, Jae Young AHN, Choongil YEH, Kyoung Seok LEE
  • Apparatus supporting an MBMS service
    Patent number: 9025520
    Abstract: Provided is a method and apparatus that may control a configuration and operation of a network including a base station to support a multicast and broadcast multimedia service in a cellular system and may control an operation of a terminal and the like, and thus, may effectively provide a multimedia service in the cellular system.
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: May 5, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jae Heung Kim, Kyoung Seok Lee, Kook Jin Lee, Jae Young Ahn, Yeong Jin Kim
  • Method for generating and transmitting a reference signal for uplink demodulation in a clustered DFT-spread OFDM transmission scheme
    Patent number: 9025684
    Abstract: Disclosed is a method for generating and transmitting a reference signal in a clustered DFT-spread OFDM transmission scheme. A method for generating and transmitting a DM-RS in a clustered DFT-spread-OFDM scheme comprises: a step of generating DM-RS sequences corresponding to the number of clusters allocated for an uplink transmission; and a step of mapping the generated DM-RS sequences to the relevant DM-RS symbol positions for each cluster. Accordingly, the method for generating and transmitting a reference signal according to the present invention, in which DM-RS sequences are allocated and transmitted on a cluster basis, uses a complete DM-RS sequence for each cluster, and therefore inter-cell interference can be weakened, and problems which might occur when applied to a multi-user MIMO (MU-MIMO) scheme can be solved.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: May 5, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Byung Jang Jeong, Young Jo Ko, Bang-Won Seo, Jae Young Ahn
  • METHOD AND APPARATUS FOR DEVICE-TO-DEVICE COMMUNICATION
    Publication number: 20150117295
    Abstract: A Device-to-Device (D2D) communication method of a first terminal is provided. The first terminal transmits a Physical D2D Broadcasting Channel (PD2DBCH) through a first area of a first frame. The first terminal transmits a signal for D2D synchronization through a second area of the first frame.
    Type: Application
    Filed: October 28, 2014
    Publication date: April 30, 2015
    Inventors: Choongil YEH, Jae Young AHN
  • VERTICAL-TYPE NONVOLATILE MEMORY DEVICE AND METHOD OF MANUFACTURING THE SAME
    Publication number: 20150115348
    Abstract: A vertical-type nonvolatile memory device includes a first vertical channel structure, and first and second stacked structure. The first vertical channel structure extends vertically on a substrate. The first stacked structure includes gate electrodes and first interlayer insulating layers. The gate layers and the first interlayer insulating layers are alternately and vertically stacked on each other. The first stacked structure is disposed on a first sidewall of the first vertical channel structure. The second stacked structure includes first sacrificial layers and second interlayer insulating layers. The first sacrificial layers and the second interlayer insulating layers are alternately and vertically stacked on each other. The second stacked structure is disposed on a second sidewall of the first vertical channel structure. The first sacrificial layers is formed of a polysilicon layer.
    Type: Application
    Filed: October 28, 2014
    Publication date: April 30, 2015
    Inventors: Phil-ouk Nam, Jun-kyu Yang, Hun-hyeong Lim, Ki-hyun Hwang, Jae-young Ahn, Dong-chul Yoo
  • METHOD OF DEVICE-TO-DEVICE COMMUNICATION AND METHOD OF CONTROLLING DEVICE-TO-DEVICE COMMUNICATION
    Publication number: 20150119056
    Abstract: A first terminal within a first cell of a first base station receives a synchronization signal and a synchronization channel that are broadcasted through a downlink by the first base station. The first terminal acquires synchronization for D2D communication using the synchronization signal and the synchronization channel. When the first terminal is connected to the first base station, in order to request allocation of a first resource for D2D communication, the first terminal transmits first information for D2D communication to the first base station through a first data channel for cellular communication. The first terminal receives D2D control information including information about the first resource that is allocated to the first terminal from the first base station. The first terminal broadcasts a second data channel for D2D communication using the D2D control information.
    Type: Application
    Filed: October 29, 2014
    Publication date: April 30, 2015
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Kyoung Seok LEE, Taegyun NOH, Choongil YEH, Jae Young AHN
  • Method for HARQ and link adaptation of device to device link in direct communication between user equipments and relaying by user equipment
    Patent number: 9014062
    Abstract: Provided is a method of processing hybrid automatic repeat request (HARQ) and adaptive transmission of a device-to-device (D2D) link. In the method, an operation method of user equipment (UE) includes (a) receiving an initial transmission mode (TM) and transmission power for the D2D link from a base station, and performing data transmission through the D2D link, (b) determining, at the UE, a TM and transmission power of a succeeding subframe, or receiving a TM control value and a transmission power control value from counterpart UE of the D2D link and determining the TM and the transmission power of the succeeding subframe, and (c) performing the data transmission to the counterpart UE using the determined TM and transmission power. Here, (b) and (c) are repeated.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: April 21, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jae Young Ahn, Tae Gyun Noh, Young Jo Ko
  • METHOD AND APPARATUS FOR TRANSMITTING SIGNAL FOR DOWNLINK CHANNEL ESTIMATION
    Publication number: 20150103801
    Abstract: A method and apparatus for transmitting a signal for channel estimation through a plurality of antennas are provided. A plurality of resources that are adjacent to each other in a time axis and a frequency axis are selected from among a set of resources that include a symbol in the time axis and a subcarrier in the frequency axis. Reference signals for the plurality of antennas are transmitted through the selected plurality of resources.
    Type: Application
    Filed: September 2, 2014
    Publication date: April 16, 2015
    Inventors: Junyoung Nam, Bangwon Seo, Jae Young Ahn
  • METHOD AND APPARATUS FOR COMMUNICATION IN MILLIMETER WAVE MIMO COMMUNICATION ENVIRONMENT
    Publication number: 20150103934
    Abstract: A method and apparatus for communication in millimeter wave multiple input multiple output (MIMO) communication are provided. A beamforming matrix by groups for terminals that are classified into a group is generated, and a pilot signal that is beam-formed based on the generated beamforming matrix by groups is transmitted to the terminals. Channel information based on the pilot signal is received from the terminals, hybrid beamforming scheduling is performed based on the channel information, and data is transmitted to the terminals based on the scheduling.
    Type: Application
    Filed: October 15, 2014
    Publication date: April 16, 2015
    Inventors: Junyoung Nam, Juho Park, Jae Young Ahn
  • Apparatus and method for transmitting and receiving data in wireless communication system using relay
    Patent number: 9007979
    Abstract: Disclosed are a data transmission/reception apparatus and method of a wireless communication system using a relay. The data transmission/reception apparatus of the relay sets a relay reception subframe (hereinafter, referred to as ‘relay-rx-sub-frame’), and reports, to a terminal within a cell coverage, that the set relay-rx-subframe is a Multicast Broadcast Single Frequency Network (MBSFN) sub-frame, so that a legacy terminal may be provided with services in a wireless communication system using the relay.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: April 14, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Heesoo Lee, Jae Young Ahn, Jae Heung Kim, Young Jo Ko, Kyoung Seok Lee
  • SCHEDULING METHOD AND APPARATUS FOR DEVICE TO DEVICE COMMUNICATION
    Publication number: 20150092689
    Abstract: A scheduling method and apparatus for a device to device communication are disclosed. The device to device communication method comprises the steps of: transmitting first data to a second terminal through a pre-assigned first sub-frame; and receiving a response corresponding to the first data and second data from the second terminal through a pre-assigned second sub-frame. Therefore, the present invention can prevent a collision of transmitted and received data between the devices.
    Type: Application
    Filed: April 29, 2013
    Publication date: April 2, 2015
    Inventors: Young Jo Ko, Jae Young Ahn, Tae Gyun Noh, Bang Won Seo
  • Vertical type semiconductor devices including oxidation target layers
    Patent number: 8987805
    Abstract: A vertical type semiconductor device can include a vertical pillar structure that includes a channel pattern with an outer wall. Horizontal insulating structures can be vertically spaced apart from one another along the vertical pillar structure to define first vertical gaps therebetween at first locations away from the outer wall and to define second vertical gaps therebetween at the outer wall, where the second vertical gaps are wider than the first vertical gaps. Horizontal wordline structures can be conformally located in the first and second vertical gaps between the vertically spaced apart horizontal insulating structures, so that the horizontal wordline structures can be vertically thinner across the first vertical gaps than across the second vertical gaps.
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: March 24, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Phil-Ouk Nam, Jun-Kyu Yang, Byong-Hyun Jang, Ki-Hyun Hwang, Jae-Young Ahn
  • DEVICE TO DEVICE COMMUNICATION METHOD USING PARTIAL DEVICE CONTROL
    Publication number: 20150078279
    Abstract: A device to device (D2D) communication method based on a partial device control is disclosed. According to the present invention, the D2D communication method and, particularly, to a partial device control method for D2D communication a relates to, and provides a D2D resource allocation and release method, a D2D HARQ process operating method, a link adaptation method comprising D2D link power control and adaptive modulation and coding (AMC), a D2D control information signaling method, a CSI reporting method for D2D communication, and contents of a CSI report. The present invention can enhance the advantages of and compensate for the disadvantages of both methods through the combination of a base station control a base station control type D2D communication method and a device control type D2D communication method.
    Type: Application
    Filed: April 26, 2013
    Publication date: March 19, 2015
    Inventors: Young Jo Ko, Jae Young Ahn, Bang Won Seo, Tae Gyun Noh