公开(公告)号：USRE47278E1

公开(公告)日：2019-03-05

申请号：US13445263

申请日：2012-04-12

Applicant: Kwang-Soon Kim ,  Jae-Young Ahn ,  Yong Soo Cho ,  Dong-Han Kim

Inventor： Kwang-Soon Kim ,  Jae-Young Ahn ,  Yong Soo Cho ,  Dong-Han Kim

IPC: H04J11/00 ,  H04L5/00 ,  H04L27/26

Abstract: Disclosed is a downlink signal configuring method and device, and synchronization and cell search method and device using the same in a mobile communication system. A downlink frame has plural symbols into which pilot subcarriers are distributively arranged with respect to time and frequency axes. Initial symbol synchronization and initial frequency synchronization are estimated by using a position at which autocorrelation of a cyclic prefix of a downlink signal and a valid symbol of the downlink is maximized, and cell search and integer-times frequency synchronization are estimated by using pilot subcarriers included in the estimated symbol. Fine symbol synchronization, fine frequency synchronization, and downlink frame synchronization is estimated by using an estimated cell search result. Downlink frequency and time tracking is performed, cell tracking is performed by using a position set of pilot subcarriers inserted into the downlink frame, fine symbol synchronization tracking and fine frequency synchronization tracking are repeated by using the pilot subcarriers to perform the frequency and time tracking of the downlink frame.

公开(公告)号：US20140169251A1

公开(公告)日：2014-06-19

申请号：US14235304

申请日：2012-07-27

Applicant: Hyung Yeol Lee ,  Song Yean Cho ,  Beom Sik Bae ,  Sang Soo Jeong ,  Kwang Soon Kim ,  Chae Gwon Lim

Inventor： Hyung Yeol Lee ,  Song Yean Cho ,  Beom Sik Bae ,  Sang Soo Jeong ,  Kwang Soon Kim ,  Chae Gwon Lim

IPC: H04W68/02 ,  H04W4/00 ,  H04W56/00 ,  H04W52/02

CPC classification number: H04W68/02 ,  H04W4/08 ,  H04W4/70 ,  H04W52/0216 ,  H04W56/001 ,  H04W56/0015 ,  Y02D70/1262 ,  Y02D70/21

Abstract: The present invention relates to a mobile communication system, and to a method for managing terminal paging in the system. A paging method of a terminal is characterized by comprising the steps of: receiving, from a base station, both a local counter value for synchronization with the base station and a local ID that the base station has allocated to the terminal; synchronizing the base station and the counter using the local counter value so as to enter an idle state; and checking the local counter and a paging trigger message contained in the subframe corresponding to the local ID. According to the present invention, local IDs are each allocated to the respective multiple MTC terminals, and therefore trigger periods can be efficiently managed in a network. Further, the multiple MTC terminals can be grouped using the allocated local IDs, thus achieving advantages of an increased number of MTC terminals which can be managed in the network.

Abstract translation: 移动通信系统技术领域本发明涉及一种移动通信系统以及一种用于管理系统中终端寻呼的方法。 终端的寻呼方法的特征在于包括以下步骤：从基站接收用于与基站同步的本地计数器值和基站已经分配给终端的本地ID; 使用本地计数器值同步基站和计数器，以进入空闲状态; 并且检查本地计数器和包含在与本地ID相对应的子帧中的寻呼触发消息。 根据本发明，将各ID分配给各个MTC终端，因此可以在网络中有效地管理触发周期。 此外，可以使用分配的本地ID对多个MTC终端进行分组，从而实现可以在网络中管理的MTC终端数量增加的优点。

公开(公告)号：US08666426B2

公开(公告)日：2014-03-04

申请号：US12096324

申请日：2005-12-19

Applicant: Young-Jo Ko ,  Jae-Young Ahn ,  Kwang-Soon Kim ,  Jung-Hyoung Kwon ,  Keum-Chan Whang

Inventor： Young-Jo Ko ,  Jae-Young Ahn ,  Kwang-Soon Kim ,  Jung-Hyoung Kwon ,  Keum-Chan Whang

IPC: H04W72/00

CPC classification number: H04W72/0453 ,  H04L5/006 ,  H04L5/023 ,  H04L25/0204 ,  H04L27/2608 ,  H04W72/085

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.

Abstract translation: 本发明涉及一种在移动通信系统中使用有限反馈信息的自适应发送装置及其方法。 根据本发明的示例性实施例，当基站向终端发送导频信号时，终端通过使用导频信号生成信道信息，从信道信息生成附加信道信息，并发送信道信息和附加信道 信道信息到基站。 基站通过使用接收到的反馈信息来确定每个使用的频带分配，功率分配和调制方法，并且根据确定的方法向终端发送调制的业务数据。

公开(公告)号：US20120285437A1

公开(公告)日：2012-11-15

申请号：US13466654

申请日：2012-05-08

Applicant: Kwang Soon KIM ,  Pung Yeun CHO ,  Dong Jin LEE ,  Je Hyoung RYU ,  Dong Jin OH

Inventor： Kwang Soon KIM ,  Pung Yeun CHO ,  Dong Jin LEE ,  Je Hyoung RYU ,  Dong Jin OH

IPC: F24C15/04

CPC classification number: F24C15/04

Abstract: Disclosed herein is a door of an electric oven, which has an improved configuration to prevent the escape of heat from a cooking compartment to the outside during cooking or self-cleaning of the cooking compartment. The door, which serves to selectively open or close a cooking compartment of an electric oven, includes a front glass installed to a front surface, a rear glass installed behind the front glass, and a porous plate interposed between the front glass and the rear glass. The porous plate serves to prevent the escape of heat from the cooking compartment to the outside and includes a plurality of view holes to enable observation of the cooking compartment from the outside.

Abstract translation: 本文公开了一种电烤炉的门，其具有改进的构造，以防止在烹饪室的烹饪或自清洁期间将热量从烹饪室逸出到外部。 用于选择性地打开或关闭电炉的烹饪室的门包括安装在前表面的前玻璃，安装在前玻璃后面的后玻璃，以及插入在前玻璃和后玻璃之间的多孔板 。 多孔板用于防止热量从烹饪室逸出到外部，并且包括多个观察孔，以使得能够从外部观察烹饪室。

公开(公告)号：US20110170494A1

公开(公告)日：2011-07-14

申请号：US13119611

申请日：2009-09-16

Applicant: Kwang Soon Kim ,  Young Jin Sang

Inventor： Kwang Soon Kim ,  Young Jin Sang

IPC: H04W56/00

CPC classification number: H04W56/0015 ,  H04L5/0007 ,  H04W56/0055 ,  H04W74/006 ,  H04W92/20

Abstract: The exemplary embodiment of the present invention provides a method of synchronizing a femtocell base station securing time synchronization of a femtocell base station by allowing the femtocell base station to transmit a symbol to a terminal belonging to the femtocell by performing the time synchronization with a preamble signal when the femtocell base station receives the preamble signal from the macrocell base station in an orthogonal frequency division multiple access (OFDMA) communication system in which a femtocell is present in a macrocell.

Abstract translation: 本发明的示例性实施例提供了一种通过允许毫微微小区基站通过执行与前导码信号的时间同步来向属于毫微微小区的终端发送符号来同步确保毫微微小区基站的时间同步的毫微微小区基站的方法 当毫微微小区基站在宏小区中存在毫微微小区的正交频分多址（OFDMA）通信系统中从宏小区基站接收前导信号时，

公开(公告)号：US07969926B2

公开(公告)日：2011-06-28

申请号：US12200824

申请日：2008-08-28

Applicant: Jin-Ghoo Choi ,  Sung-Yoon Jung ,  Seong-Lyun Kim ,  Kwang-Soon Kim ,  Young-Jin Sang ,  Jung-Min Park ,  Young-Ju Hwang

Inventor： Jin-Ghoo Choi ,  Sung-Yoon Jung ,  Seong-Lyun Kim ,  Kwang-Soon Kim ,  Young-Jin Sang ,  Jung-Min Park ,  Young-Ju Hwang

IPC: H04B7/14

CPC classification number: H04B7/15542 ,  H04W16/30

Abstract: A system and method for transmitting and receiving signals in a communication system are provided, in which a BS communicates with a first MS located within an inner area of a cell during first and second time periods in TDD and communicates with a second MS located within an outer area of the cell during the first time period in FDD, and an RS detects signals transmitted between the BS and the second MS during the first time period and transmits the detected signals simultaneously to the BS and the second MS during the second time period.

Abstract translation: 提供了一种用于在通信系统中发送和接收信号的系统和方法，其中，在TDD中的第一和第二时间段期间，BS与位于小区的内部区域内的第一MS进行通信，并且与位于 FDD中的第一时间段期间的小区外部区域，并且RS在第一时间段期间检测在BS与第二MS之间发送的信号，并且在第二时间段期间将检测到的信号同时发送到BS和第二MS。

公开(公告)号：US07764593B2

公开(公告)日：2010-07-27

申请号：US10577034

申请日：2003-11-19

Applicant: Kwang-Soon Kim ,  Jae-Young Ahn ,  Yong Soo Cho ,  Dong-Han Kim

Inventor： Kwang-Soon Kim ,  Jae-Young Ahn ,  Yong Soo Cho ,  Dong-Han Kim

IPC: H04J11/00

CPC classification number: H04J11/0069 ,  H04L5/0007 ,  H04L5/0048 ,  H04L27/2656 ,  H04L27/2659 ,  H04L27/266 ,  H04L27/2663 ,  H04L27/2665 ,  H04L27/2675 ,  H04L27/2678

Abstract: Disclosed is a downlink signal configuring method and device, and synchronization and cell search method and device using the same in a mobile communication system. A downlink frame has plural symbols into which pilot subcarriers are distributively arranged with respect to time and frequency axes. Initial symbol synchronization and initial frequency synchronization are estimated by using a position at which autocorrelation of a cyclic prefix of a downlink signal and a valid symbol of the downlink is maximized, and cell search and integer-times frequency synchronization are estimated by using pilot subcarriers included in the estimated symbol. Fine symbol synchronization, fine frequency synchronization, and downlink frame synchronization is estimated by using an estimated cell search result. Downlink frequency and time tracking is performed, cell tracking is performed by using a position set of pilot subcarriers inserted into the downlink frame, fine symbol synchronization tracking and fine frequency synchronization tracking are repeated by using the pilot subcarriers to perform the frequency and time tracking of the downlink frame.

Abstract translation: 公开了一种下行链路信号配置方法和装置，以及在移动通信系统中使用其的同步和小区搜索方法及装置。 下行链路帧具有多个符号，导频子载波相对于时间轴和频率轴分布布置在其中。 通过使用下行链路信号的循环前缀和下行链路的有效符号的自相关被最大化的位置来估计初始符号同步和初始频率同步，并且通过使用包括的导频子载波来估计小区搜索和整数倍的频率同步 在估计的符号。 通过使用估计的小区搜索结果来估计精细符号同步，精细频率同步和下行链路帧同步。 执行下行链路频率和时间跟踪，通过使用插入到下行链路帧中的导频子载波的位置集来执行小区跟踪，通过使用导频子载波来重复精细符号同步跟踪和精细频率同步跟踪，以执行频率和时间跟踪 下行帧。

公开(公告)号：US07680156B2

公开(公告)日：2010-03-16

申请号：US10582636

申请日：2004-09-08

Applicant: Soo-Jung Jung ,  Kwang-Soon Kim ,  Byung-Han Ryu

Inventor： Soo-Jung Jung ,  Kwang-Soon Kim ,  Byung-Han Ryu

IPC: H04J3/12

CPC classification number: H04W72/1294 ,  H04J11/0026 ,  H04L1/1671 ,  H04L5/023 ,  H04L27/261 ,  H04W72/048 ,  H04W72/14 ,  H04W74/002 ,  H04W74/006 ,  H04W74/0833 ,  H04W74/0866

Abstract: Disclosed is a random access data transmission system and method using OFDMA. The system includes a scheduling ID into an access grant on a preamble for a random access, and transmits it together with an acknowledgment or a non-acknowledgment of the preamble, a base station uses the scheduling ID to notify the mobile station of a random access data transmittable time and a data transmission channel through a control channel, and the mobile station transmits a preamble in advance. After receiving a transmission assignment instruction corresponding to a scheduling ID through the control channel, the mobile station transmits random access data through an assigned channel.

Abstract translation: 公开了使用OFDMA的随机接入数据传输系统和方法。 该系统将调度ID包括在用于随机接入的前同步码上的接入许可中，并与前导码的确认或不确认一起发送，基站使用调度ID向移动台通知随机接入 数据发送时间和通过控制信道的数据传输信道，并且移动台预先发送前同步码。 在通过控制信道接收到与调度ID相对应的发送分配指令之后，移动站通过分配的信道发送随机接入数据。

公开(公告)号：US07643566B2

公开(公告)日：2010-01-05

申请号：US11401484

申请日：2006-04-11

Applicant: Jong-Yoon Hwang ,  Kwang-Soon Kim ,  Keum-Chan Whang

Inventor： Jong-Yoon Hwang ,  Kwang-Soon Kim ,  Keum-Chan Whang

IPC: H04K1/10

CPC classification number: H04L27/2657 ,  H04L27/2676

Abstract: An apparatus and method for estimating a frequency offset in an Orthogonal Frequency Division Multiplexing (OFDM) system are provided. Two time domain signals are generated from one received OFDM symbol through two observation windows with different delay times. The two time domain signals are compensated for a candidate frequency offset. A discrete Fourier transform process and a phase compensation process in a frequency domain are performed. A difference between two frequency domain signals compensated for a phase difference is computed with respect to each candidate frequency offset. For all candidate frequency offsets, difference values are compared with each other. A candidate frequency offset mapped to a minimum difference value is detected as an optimal frequency offset. The frequency offset can be more exactly estimated without consuming a bandwidth and increasing hardware complexity of a receiver.

Abstract translation: 提供了一种用于估计正交频分复用（OFDM）系统中的频率偏移的装置和方法。 通过具有不同延迟时间的两个观察窗从一个接收的OFDM符号生成两个时域信号。 对候选频率偏移补偿两个时域信号。 执行频域中的离散付里叶变换处理和相位补偿处理。 针对每个候选频率偏移计算补偿相位差的两个频域信号之间的差异。 对于所有候选频率偏移量，将差值进行比较。 映射到最小差值的候选频率偏移被检测为最佳频率偏移。 可以更精确地估计频率偏移，而不消耗带宽并增加接收机的硬件复杂度。

公开(公告)号：US07542504B2

公开(公告)日：2009-06-02

申请号：US10532734

申请日：2002-11-26

Applicant: Kyung-Hi Chang ,  Kwang-Soon Kim ,  Yong-Soo Cho ,  Suk-Won Ha

Inventor： Kyung-Hi Chang ,  Kwang-Soon Kim ,  Yong-Soo Cho ,  Suk-Won Ha

IPC: H04B1/00 ,  H04B1/66

CPC classification number: H04L5/0044 ,  H04B1/713 ,  H04B1/7136 ,  H04B1/7143 ,  H04B2001/71367 ,  H04B2001/7154 ,  H04L1/0025 ,  H04L5/0007 ,  H04L5/0048 ,  H04L25/0226 ,  H04L27/2613 ,  H04L27/2628 ,  H04L27/2657

Abstract: Method for providing frequency-hopping OFDMA using symbols of comb patter, the method including the steps of: a) assigning frequency domain signal X(k) of comb pattern (comb symbol, k is frequency index) to modulated data sequence, the comb symbol comprising predetermined number of sub carriers (sub carrier group) which are placed with predetermined interval in the whole available frequency band; b) getting the comb symbol hopped for the comb symbol to have independent frequency offset; and c) inverse fast fourier transforming the comb symbol to time domain signal x(n) (n is time index) and transmitting the signal.

Abstract translation: 一种用于使用梳状图案符号提供跳频OFDMA的方法，所述方法包括以下步骤：a）将梳状模式（梳状符号，k为频率索引）的频域信号X（k）分配给调制数据序列，梳状符号 包括在整个可用频带中以预定间隔放置的预定数量的子载波（子载波组）; b）使梳状符号跳转的梳状符号具有独立的频率偏移; 和c）将梳状符号逆向快速傅立叶变换成时域信号x（n）（n是时间索引）并发送信号。