公开(公告)号：US09136034B2

公开(公告)日：2015-09-15

申请号：US13394523

申请日：2010-08-25

Applicant: Moo-Seok Lee ,  Yong-Cheol Shin ,  Jae Hee Ryu ,  Na Young Kim ,  Kyoung-Ju Kim ,  Chul Ki Kim ,  Yong Hwan Lee ,  Yun Kyung Kang

Inventor： Moo-Seok Lee ,  Yong-Cheol Shin ,  Jae Hee Ryu ,  Na Young Kim ,  Kyoung-Ju Kim ,  Chul Ki Kim ,  Yong Hwan Lee ,  Yun Kyung Kang

IPC: H01B1/12 ,  C08J5/22 ,  H01M8/02 ,  H01M8/10

CPC classification number: H01B1/122 ,  C08J5/2275 ,  C08J2339/06 ,  C08J2381/02 ,  H01M8/0293 ,  H01M8/1027 ,  H01M8/103 ,  H01M8/1032 ,  H01M8/106 ,  H01M8/1062 ,  H01M2300/0088 ,  Y02E60/521

Abstract: The present disclosure relates to a polymer electrolyte membrane having a construction wherein an ionomer is charged in pores of a nanoweb having a high melting point, being insoluble in an organic solvent and having excellent pore characteristics, under optimum conditions. Therefore, an overall thickness of the electrolyte membrane may be reduced, thereby attaining advantages such as decrease in ohmic loss, reduction of material costs, excellent heat resistance, low thickness expansion rate which in turn prevents proton conductivity from being deteriorated over a long term. The polymer electrolyte membrane of the present invention comprises a porous nanoweb having a melting point of 300□ or more and being insoluble in an organic solvent of NMP, DMF, DMA, or DMSO at room temperature; and an ionomer which is charged in pores of the porous nanoweb and contains a hydrocarbon material soluble in the organic solvent at room temperature.

Abstract translation: 本公开内容涉及一种具有这样一种结构的聚合物电解质膜，其中在最佳条件下，将离聚物加入具有高熔点的纳米纤维网的孔中，不溶于有机溶剂并具有优异的孔特性。 因此，可以降低电解质膜的整体厚度，从而获得诸如欧姆损耗降低，材料成本降低，耐热性优异，低厚度膨胀率的优点，从而防止质子传导性长期劣化。 本发明的高分子电解质膜包含在室温下熔点为300□以上且不溶于NMP，DMF，DMA或DMSO的有机溶剂的多孔纳米纤维网; 和离子交联聚合物，其装入多孔纳米纤维网的孔中，并含有在室温下可溶于有机溶剂的烃类物质。

公开(公告)号：US09103692B2

公开(公告)日：2015-08-11

申请号：US12819757

申请日：2010-06-21

Applicant: Chae-Guk Cho ,  Sung-Ha Choi ,  Yong-Hwan Lee

Inventor： Chae-Guk Cho ,  Sung-Ha Choi ,  Yong-Hwan Lee

IPC: G01C21/00 ,  G01C21/36

CPC classification number: G01C21/3682 ,  G01C21/00 ,  G01C21/3667 ,  G01C21/3673 ,  G01C21/3679 ,  G01C21/3685

Abstract: A navigation method and apparatus of a mobile terminal displays only a particular point of interest (POI) existing by the roadside of a pre-set route when the POI is selected by the user, to thereby provide the user-selected POI without changing the route (or without re-searching the route). The navigation apparatus of a mobile terminal includes a display unit configured to display a route from a current location to a destination on map data, and a controller configured to search a first point of interest (POI) among the first POI located by the roadside of the route and a second POI located near the route, and display location information of the searched first POI on the display unit.

Abstract translation: 当用户选择POI时，移动终端的导航方法和装置仅显示由预设路由的路侧存在的特定兴趣点（POI），从而提供用户选择的POI而不改变路由 （或不重新搜索路线）。 移动终端的导航装置包括：显示单元，被配置为在地图数据上显示从当​​前位置到目的地的路线;以及控制器，被配置为搜索位于第一POI的第一POI中的第一兴趣点 所述路线和位于所述路线附近的第二POI，并且在所述显示单元上显示所搜索的第一POI的位置信息。

公开(公告)号：US09083491B2

公开(公告)日：2015-07-14

申请号：US13876833

申请日：2011-09-02

Applicant: Yong-Hwan Lee ,  Jin-Seok Han ,  Seung-Hwan Lee

Inventor： Yong-Hwan Lee ,  Jin-Seok Han ,  Seung-Hwan Lee

IPC: H04L1/00 ,  H04J11/00

CPC classification number: H04L1/0034 ,  H04J11/003

Abstract: The method for transmitting a signal while avoiding the influences of an interference signal in the same channel according to the present invention comprises: a process in which communication devices in the communication system perceive, in a distributed manner, whether or not an interference signal exists in a transmission channel being used; a process in which the communication devices in the communication system temporarily transceive signals using a plurality of available transmission channels other than the transmission channel currently being used so as to avoid an interference signal if the interference signal is perceived; and a process of determining the channel having a best link state as a transmission channel from among the plurality of used transmission channels and returning to an existing transmission system using a single channel.

Abstract translation: 根据本发明的用于发送信号同时避免干扰信号在同一信道中的影响的方法包括：通信系统中的通信设备以分布式方式感知是否存在干扰信号的过程 使用传输信道; 通信系统中的通信装置使用除当前正在使用的传输信道之外的多个可用传输信道来临时收发信号，以便如果感知到干扰信号，则避免干扰信号的过程; 以及从多个使用的传输信道中确定具有最佳链路状态的信道作为传输信道并返回到使用单个信道的现有传输系统的处理。

公开(公告)号：US09008150B2

公开(公告)日：2015-04-14

申请号：US13990745

申请日：2011-12-01

Applicant: Yong-Hwan Lee ,  Seung-Hwan Lee ,  Jin-Seok Han

Inventor： Yong-Hwan Lee ,  Seung-Hwan Lee ,  Jin-Seok Han

IPC: H04B1/713 ,  H04B1/715 ,  H04W28/18

CPC classification number: H04B1/715 ,  H04B2001/7154 ,  H04W28/18

Abstract: An interference signal avoiding device of a frequency hopping spread system and a method thereof are disclosed. A method of transmitting/receiving an interference signal avoiding signal according to the present invention includes: determining a frequency hopping channel set and a parameter of an interference signal detector in consideration of characteristics of an interference signal; detecting whether there is an interference signal with respect to frequency hopping candidate channels that are to be used for the next frequency hopping by using the determined interference signal detector; transmitting a signal through a channel that is determined by the interference signal detector that there is no interference signal among the frequency hopping candidate channels; and searching a channel through which the signal is transmitted from the frequency hopping candidate channels in order to receive the transmitted signal.

Abstract translation: 公开了一种跳频扩散系统的干扰信号避免装置及其方法。 根据本发明的发送/接收干扰信号避免信号的方法包括：考虑干扰信号的特性，确定跳频信道组和干扰信号检测器的参数; 通过使用所确定的干扰信号检测器检测是否存在关于要用于下一次跳频的跳频候选信道的干扰信号; 通过由所述干扰信号检测器确定的在所述跳频候选信道中不存在干扰信号的信道发送信号; 并且从跳频候选信道搜索发送信号的信道，以便接收所发送的信号。

公开(公告)号：US08982718B2

公开(公告)日：2015-03-17

申请号：US13020906

申请日：2011-02-04

Applicant: Yong-Hwan Lee ,  Hyung-Sin Kim ,  Seung-Hwan Lee

Inventor： Yong-Hwan Lee ,  Hyung-Sin Kim ,  Seung-Hwan Lee

IPC: G08C15/00 ,  H04L12/28 ,  H04L5/00 ,  H04B7/02

CPC classification number: H04L5/0048 ,  H04B7/024 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/0073

Abstract: In a wireless communication system, at least one sounding subchannel determining parameter is transmitted from a sounding signal receiving apparatus to a sounding signal transmitting apparatus. A sounding subchannel for the sounding signal transmitting apparatus is allocated according to the sounding subchannel determining parameter. A sounding signal is received from the sounding signal transmitting apparatus over the allocated sounding subchannel. The sounding subchannel determining parameter is determined for allocating a sounding subchannel considering a frequency correlation.

Abstract translation: 在无线通信系统中，将至少一个发声子信道确定参数从探测信号接收装置发送到探测信号发送装置。 根据探测子信道确定参数分配用于探测信号发送装置的探测子信道。 通过分配的探测子信道从探测信号发送装置接收到探测信号。 确定探测子信道确定参数以考虑频率相关性来分配探测子信道。

公开(公告)号：US08873664B2

公开(公告)日：2014-10-28

申请号：US13520794

申请日：2011-01-07

Applicant: Yong-Hwan Lee ,  O-Jin Kwon ,  Keon-Wook Lee

Inventor： Yong-Hwan Lee ,  O-Jin Kwon ,  Keon-Wook Lee

IPC: H04B7/02 ,  H04B7/06 ,  H04L5/00 ,  H04L25/02 ,  H04L25/03

CPC classification number: H04B7/0639 ,  H04B7/0641 ,  H04B7/0663 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/022 ,  H04L25/0224 ,  H04L25/03949

Abstract: The present invention relates to a transmission beamforming method and apparatus in an orthogonal frequency division multiplexing (OFDM)-based MIMO wireless system. In particular, the present invention relates to a transmission beamforming method in an OFDM-based MIMO wireless system and an apparatus therefor, wherein the transmission beamforming method comprises: estimating a channel from a received pilot signal and obtaining time for the estimating channel and 2D channel correlation information of a frequency band; obtaining estimated channel information based on the channel correlation information; obtaining differential information that represents a difference between the current channel and the estimated channel and quantizing the differential information; and generating a transmission beam weight by using a predefined code book from the quantized differential information. The present invention may also provide a method and apparatus for reducing the channel quantization error and feedback load by employing the OFDM-based MIMO in a wireless communication system using a transmission beamforming scheme, wherein a receiver estimates current channel information by using time and 2D channel correlation information of a frequency based on the previous channel information, compares the estimated current channel information with an actual channel and then feeds back the differential channel information, i.e., the difference between the estimated channel and the actual channel, to a transmitter.

Abstract translation: 本发明涉及一种基于正交频分复用（OFDM）的MIMO无线系统中的发射波束形成方法和装置。 具体地说，本发明涉及一种基于OFDM的MIMO无线系统中的发送波束形成方法及其装置，其中，所述发送波束形成方法包括：从接收的导频信号估计信道，并获得估计信道和2D信道的时间 频带的相关信息; 基于信道相关信息获取估计信道信息; 获取表示当前信道与估计信道之间的差分的差分信息并量化差分信息; 以及通过使用来自所述量化的差分信息的预定义码本来生成传输束权重。 本发明还可以提供一种通过在使用传输波束成形方案的无线通信系统中采用基于OFDM的MIMO来减少信道量化误差和反馈负载的方法和装置，其中接收机通过使用时间和2D信道来估计当前信道信息 基于先前信道信息的频率的相关信息，将估计的当前信道信息与实际信道进行比较，然后将差分信道信息（即估计信道与实际信道之间的差）反馈给发射机。

公开(公告)号：US20130182602A1

公开(公告)日：2013-07-18

申请号：US13876833

申请日：2011-09-02

Applicant: Yong-Hwan Lee ,  Jin-Seok Han ,  Seung-Hwan Lee

Inventor： Yong-Hwan Lee ,  Jin-Seok Han ,  Seung-Hwan Lee

IPC: H04L1/00

CPC classification number: H04L1/0034 ,  H04J11/003

Abstract: The method for transmitting a signal while avoiding the influences of an interference signal in the same channel according to the present invention comprises: a process in which communication devices in the communication system perceive, in a distributed manner, whether or not an interference signal exists in a transmission channel being used; a process in which the communication devices in the communication system temporarily transceive signals using a plurality of available transmission channels other than the transmission channel currently being used so as to avoid an interference signal if the interference signal is perceived; and a process of determining the channel having a best link state as a transmission channel from among the plurality of used transmission channels and returning to an existing transmission system using a single channel.

Abstract translation: 根据本发明的用于发送信号同时避免干扰信号在同一信道中的影响的方法包括：通信系统中的通信设备以分布式方式感知是否存在干扰信号的过程 使用传输信道; 通信系统中的通信装置使用除当前正在使用的传输信道之外的多个可用传输信道来临时收发信号，以便如果感知到干扰信号，则避免干扰信号的过程; 以及从多个使用的传输信道中确定具有最佳链路状态的信道作为传输信道并返回到使用单个信道的现有传输系统的处理。

公开(公告)号：US08472459B2

公开(公告)日：2013-06-25

申请号：US11940249

申请日：2007-11-14

Applicant: Yong-Hwan Lee ,  Seung-Hwan Lee

Inventor： Yong-Hwan Lee ,  Seung-Hwan Lee

IPC: H04L12/56 ,  H04J1/16

CPC classification number: H04B17/0087 ,  H04B7/12 ,  H04B17/24 ,  H04B17/309

Abstract: A system and method for probing a channel by a base station in a communication system is provided. The channel probing includes performing pre-probing for selecting a subchannel, adjusting a subcarrier distance of a probing signal according to frequency selectivity indicative of frequency-domain channel selectivity based on a time channel correlation of each of a plurality of users and performing main-probing for transmitting the probing signal on the selected subchannel.

Abstract translation: 提供了一种用于在通信系统中由基站探测信道的系统和方法。 信道探测包括执行用于选择子信道的预探测，根据指示频域信道选择性的频率选择性调整探测信号的副载波距离，基于多个用户中的每个用户的时间信道相关性，并执行主要探测 用于在所选择的子信道上发送探测信号。

公开(公告)号：US20130034177A1

公开(公告)日：2013-02-07

申请号：US13479939

申请日：2012-05-24

Applicant: Yong-Hwan Lee ,  Han-Jun Park ,  Keon-Wook Lee

Inventor： Yong-Hwan Lee ,  Han-Jun Park ,  Keon-Wook Lee

IPC: H04L27/28

CPC classification number: H04L25/0228 ,  H04L25/0208

Abstract: The invention relates to a method for channel estimation using a dedicated pilot signal in an OFDM-based communication system with multi-antenna transmission techniques. The receiver estimates the statistical characteristics of a virtual channel generated by beamforming by exploiting the statistical characteristics of common pilot channel, determines the optimum dedicated pilot pattern, and estimates the channel from dedicated pilot signal transmitted in an optimum pattern by means of AMMSE interpolation. The invention minimizes the channel estimation error by exploiting the statistical characteristics of the virtual channel, and optimally determines the dedicated pilot pattern according to the operation environment to maximize the transmission performance in terms of the pilot signaling overhead and the channel estimation error. In particular, the invention is very effective in low signal-to-interference plus noise power ratio (SINR) operation environments.

Abstract translation: 本发明涉及一种在具有多天线传输技术的基于OFDM的通信系统中使用专用导频信号进行信道估计的方法。 接收器通过利用公共导频信道的统计特性来估计由波束成形产生的虚拟信道的统计特性，确定最佳专用导频模式，并且通过AMMSE插值从以最佳模式发送的专用导频信号估计信道。 本发明通过利用虚拟信道的统计特性来最小化信道估计误差，并根据操作环境最佳地确定专用导频模式，以根据导频信令开销和信道估计误差来最大化传输性能。 特别地，本发明在低信噪比加噪声功率比（SINR）操作环境中非常有效。

公开(公告)号：US20120231355A1

公开(公告)日：2012-09-13

申请号：US13394523

申请日：2010-08-25

Applicant: Moo-Seok Lee ,  Yong-Cheol Shin ,  Jae Hee Ryu ,  Na Young Kim ,  Kyoung-Ju Kim ,  Chul Ki Kim ,  Yong-Hwan Lee ,  Yun Kyung Kang

Inventor： Moo-Seok Lee ,  Yong-Cheol Shin ,  Jae Hee Ryu ,  Na Young Kim ,  Kyoung-Ju Kim ,  Chul Ki Kim ,  Yong-Hwan Lee ,  Yun Kyung Kang

IPC: H01M8/10 ,  B82Y30/00

CPC classification number: H01B1/122 ,  C08J5/2275 ,  C08J2339/06 ,  C08J2381/02 ,  H01M8/0293 ,  H01M8/1027 ,  H01M8/103 ,  H01M8/1032 ,  H01M8/106 ,  H01M8/1062 ,  H01M2300/0088 ,  Y02E60/521

Abstract: The present disclosure relates to a polymer electrolyte membrane having a construction wherein an ionomer is charged in pores of a nanoweb having a high melting point, being insoluble in an organic solvent and having excellent pore characteristics, under optimum conditions. Therefore, an overall thickness of the electrolyte membrane may be reduced, thereby attaining advantages such as decrease in ohmic loss, reduction of material costs, excellent heat resistance, low thickness expansion rate which in turn prevents proton conductivity from being deteriorated over a long term. The polymer electrolyte membrane of the present invention comprises a porous nanoweb having a melting point of 300□ or more and being insoluble in an organic solvent of NMP, DMF, DMA, or DMSO at room temperature; and an ionomer which is charged in pores of the porous nanoweb and contains a hydrocarbon material soluble in the organic solvent at room temperature.

Abstract translation: 本公开内容涉及一种具有这样一种结构的聚合物电解质膜，其中在最佳条件下，将离聚物加入具有高熔点的纳米纤维网的孔中，不溶于有机溶剂并具有优异的孔特性。 因此，可以降低电解质膜的整体厚度，从而获得诸如欧姆损耗降低，材料成本降低，耐热性优异，低厚度膨胀率的优点，从而防止质子传导性长期劣化。 本发明的高分子电解质膜包含在室温下熔点为300□以上且不溶于NMP，DMF，DMA或DMSO的有机溶剂的多孔纳米纤维网; 和离子交联聚合物，其装入多孔纳米纤维网的孔中，并含有在室温下可溶于有机溶剂的烃类物质。