公开(公告)号：US07877664B2

公开(公告)日：2011-01-25

申请号：US11653724

申请日：2007-01-16

Applicant: Gyu bum Kyung ,  Seung-Hoon Choi ,  Hong-Sil Jeong ,  Jae-Yoel Kim ,  Chi-Woo Lim ,  Sung-Eun Park ,  Young-Kyun Kim ,  Dong-Seek Park ,  Se-Ho Myung ,  Kyeong-Cheol Yang

Inventor： Gyu bum Kyung ,  Seung-Hoon Choi ,  Hong-Sil Jeong ,  Jae-Yoel Kim ,  Chi-Woo Lim ,  Sung-Eun Park ,  Young-Kyun Kim ,  Dong-Seek Park ,  Se-Ho Myung ,  Kyeong-Cheol Yang

IPC: H03M13/00

CPC classification number: H03M13/116 ,  H03M13/1151

Abstract: Disclosed is an apparatus and a method for transmitting/receiving a signal in a communication system, which generates an Affine Permutation Matrix-Low Density Parity Check (APM-LDPC) codeword by encoding an information vector in an APM-LDPC encoding scheme which is a preset structured LDPC encoding scheme, and detects the information vector by decoding the signal in a decoding scheme corresponding to the APM-LDPC encoding scheme, thereby making it possible to generate a Low Density Parity Check (LDPC) code in the form of maximizing a girth while minimizing complexity.

Abstract translation: 公开了一种用于在通信系统中发送/接收信号的装置和方法，该通信系统通过对APM-LDPC编码方案中的信息向量进行编码来产生仿射置换矩阵 - 低密度奇偶校验码（APM-LDPC） 通过对与APM-LDPC编码方式相对应的解码方式对信号进行解码来检测信息矢量，从而能够以最大化周长的形式生成低密度奇偶校验码（LDPC）码。 同时尽量减少复杂性。

公开(公告)号：US07725801B2

公开(公告)日：2010-05-25

申请号：US11478831

申请日：2006-06-30

Applicant: Hong-Sil Jeong ,  Se-Ho Myung ,  Kyeong-Cheol Yang ,  Hyun-Gu Yang ,  Dong-Seek Park ,  Chi-Woo Lim ,  Jae-Yeol Kim ,  Seung-Hoon Choi

Inventor： Hong-Sil Jeong ,  Se-Ho Myung ,  Kyeong-Cheol Yang ,  Hyun-Gu Yang ,  Dong-Seek Park ,  Chi-Woo Lim ,  Jae-Yeol Kim ,  Seung-Hoon Choi

IPC: H03M13/00

CPC classification number: H03M13/11

Abstract: Disclosed is a method and apparatus for completely recovering received data with high reliability using LDPC codes without short-sized cycles in a digital communication system using an error-correcting code. The method includes performing exponent conversion of a predetermined number of exponent matrixes stored in advance in a memory so as to generate new exponent matrixes based on the exponent conversion, and generating new LDPC codes using the new exponent matrixes.

Abstract translation: 公开了一种在使用纠错码的数字通信系统中使用不具有小尺寸周期的LDPC码来以高可靠性完全恢复接收数据的方法和装置。 该方法包括对存储器中预先存储的预定数量的指数矩阵进行指数变换，以便基于指数变换产生新的指数矩阵，并使用新的指数矩阵生成新的LDPC码。

公开(公告)号：US20100020674A1

公开(公告)日：2010-01-28

申请号：US12460636

申请日：2009-07-22

Applicant: Seung-Hoon Choi ,  June Moon ,  Sung-Eun Park ,  Chi-Woo Lim ,  Song-Nam Hong

Inventor： Seung-Hoon Choi ,  June Moon ,  Sung-Eun Park ,  Chi-Woo Lim ,  Song-Nam Hong

IPC: H04J11/00 ,  H04W8/00

CPC classification number: H04J11/0073 ,  H04L5/0007 ,  H04L27/2655 ,  H04L27/2675

Abstract: A apparatus and method for allocating synchronization acquisition sequence in a time domain and allocating a cell ID search sequence in a frequency domain. In a method for transmitting a synchronization signal of a base station in a wireless communication system, a binary frequency-domain preamble sequence predetermined for cell ID search and a binary time-domain preamble sequence predetermined for synchronization acquisition are used to determine a complex time-domain preamble sequence except the binary time-domain preamble sequence among the time-domain preamble sequences that are generated according to an Inverse Fast Fourier Transform (IFFT) operation on the binary frequency-domain preamble sequence. The complex time-domain preamble sequence and the binary time-domain preamble sequence are transmitted to a mobile station.

Abstract translation: 一种用于在时域中分配同步捕获序列并在频域中分配小区ID搜索序列的装置和方法。 在用于在无线通信系统中发送基站的同步信号的方法中，使用预定用于小区ID搜索的二进制频域前导码序列和预定用于同步获取的二进制时域前导码序列来确定复合时间 - 除了根据对二进制频域前导序列的快速傅里叶逆变换（IFFT）操作而生成的时域前导序列之中的二进制时域前导序列之外的域前导序列。 将复杂时域前导码序列和二进制时域前导码序列发送到移动台。

公开(公告)号：US20080130486A1

公开(公告)日：2008-06-05

申请号：US11999233

申请日：2007-12-04

Applicant: Chi-Woo Lim ,  Seung-Hoon Park ,  Mi-Hyun Lee ,  Ki-Chun Cho ,  Dong-Seek Park ,  Ho-Kyu Choi

Inventor： Chi-Woo Lim ,  Seung-Hoon Park ,  Mi-Hyun Lee ,  Ki-Chun Cho ,  Dong-Seek Park ,  Ho-Kyu Choi

IPC: H04J11/00 ,  H04Q7/00

CPC classification number: H04W72/042 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0053 ,  H04L5/0094 ,  H04W88/10

Abstract: An apparatus and method for maintaining backward compatibility with a narrow-band wireless communication system in a wide-band wireless communication system is provided. The base station comprises a scheduler, a control information generator, a resource mapping unit and a transmitter. The terminal comprises a resource allocation information checking unit, a receiver and a transmitter.

Abstract translation: 提供了一种用于在宽带无线通信系统中保持与窄带无线通信系统的向后兼容性的装置和方法。 基站包括调度器，控制信息生成器，资源映射单元和发送器。 终端包括资源分配信息检查单元，接收机和发射机。

公开(公告)号：US20070162822A1

公开(公告)日：2007-07-12

申请号：US11635262

申请日：2006-12-07

Applicant: Seung-Hoon Choi ,  Hong-Sil Jeong ,  Gyu-Bum Kyung ,  Dong-Seek Park ,  Jae-Yoel Kim ,  Sung-Eun Park ,  Chi-Woo Lim ,  Se-Ho Myung ,  Kyeong-Cheol Yang ,  Hyun-Koo Yang

Inventor： Seung-Hoon Choi ,  Hong-Sil Jeong ,  Gyu-Bum Kyung ,  Dong-Seek Park ,  Jae-Yoel Kim ,  Sung-Eun Park ,  Chi-Woo Lim ,  Se-Ho Myung ,  Kyeong-Cheol Yang ,  Hyun-Koo Yang

IPC: H03M13/00

CPC classification number: H03M13/116 ,  H03M13/118 ,  H03M13/6362

Abstract: Provided are an apparatus and method for transmtting/receiving signal, supporting a variable coding rate, in a communication system. The method includes receiving an information vector, generating a child parity check matrix based on a parent parity check matrix according to a coding rate to be applied for generating a block Low Density Parity Check (LDPC) codeword using the information vector, and encoding the information vector into the block LDPC codeword according to the child parity check matrix.

Abstract translation: 提供了一种用于在通信系统中传送/接收信号，支持可变编码率的装置和方法。 该方法包括：接收信息向量，根据应用于使用信息向量生成块低密度奇偶校验（LDPC）码字的编码率的母校验矩阵，生成子奇偶校验矩阵，并对该信息进行编码 根据子奇偶校验矩阵向量插入块LDPC码字。

公开(公告)号：US20050288020A1

公开(公告)日：2005-12-29

申请号：US11156169

申请日：2005-06-17

Applicant: Jae-Weon Cho ,  Pan-Yuh Joo ,  Sie-Joon Cho ,  Chi-Woo Lim ,  Young-Bin Chang ,  Seung-Joo Maeng ,  Myung-Kwang Byun

Inventor： Jae-Weon Cho ,  Pan-Yuh Joo ,  Sie-Joon Cho ,  Chi-Woo Lim ,  Young-Bin Chang ,  Seung-Joo Maeng ,  Myung-Kwang Byun

IPC: H04B7/26 ,  H04W16/10 ,  H04W36/18 ,  H04Q7/20

CPC classification number: H04W16/10 ,  H04W36/18

Abstract: Disclosed is a method for supporting a handover in a broadband wireless access communication system which includes a mobile subscriber station, a serving base station currently providing service to the mobile subscriber station, and a plurality of adjacent base stations different from the serving base station, in which each of the base stations includes cells using subchannel bands different from each other, the method including establishing a set of base stations which currently provide wireless channels for data transmission/reception to the mobile subscriber station; classifying, by each base station, entire subchannels into a plurality of sets of subchannels; and allocating each of the sets of subchannels obtained by the classification to a PUSC (Partial Usage of Subchannels) subchannel area of each sector, wherein, every base stations included in an active set select an equal number of PUSC subchannels from among a PUSC subchannel area allocated to each of the base stations and allocate the selected PUSC subchannels to the mobile subscriber station, and the mobile subscriber station receives a downlink signal transmitted through each of PUSC subchannel areas and performs a predetermined combining of all signals received from each of the BSs.

Abstract translation: 公开了一种在宽带无线接入通信系统中支持切换的方法，该系统包括移动用户台，当前向移动用户站提供服务的服务基站以及与服务基站不同的多个相邻基站， 所述基站中的每一个包括使用彼此不同的子信道频带的小区，所述方法包括建立一组基站，所述基站当前为所述移动用户台提供数据发送/接收的无线信道; 将每个基站将整个子信道分类成多组子信道; 并且将通过分类获得的每个子信道组分配给每个扇区的PUSC（子信道的部分使用）子信道区域，其中，包括在活动集中的每个基站从PUSC子信道区域中选择相等数量的PUSC子信道 分配给每个基站，并将所选择的PUSC子信道分配给移动用户站，并且移动用户站接收通过每个PUSC子信道区域发送的下行链路信号，并执行从每个BS接收的所有信号的预定组合。

公开(公告)号：US09942782B2

公开(公告)日：2018-04-10

申请号：US13360448

申请日：2012-01-27

Applicant: Hyun-Kyu Yu ,  Chi-Woo Lim ,  Su-Ryong Jeong

Inventor： Hyun-Kyu Yu ,  Chi-Woo Lim ,  Su-Ryong Jeong

IPC: H04W4/00 ,  H04B7/15 ,  H04W24/04 ,  H04W4/22 ,  H04W76/02 ,  H04W36/14 ,  H04W84/20 ,  H04W88/04

CPC classification number: H04W24/04 ,  H04W4/90 ,  H04W36/14 ,  H04W76/19 ,  H04W84/20 ,  H04W88/04

Abstract: A method and apparatus support a Mobile Station (MS) located in a collapsed cell area to be disconnected from a Base Station (BS) in a wireless communication system. A method of an MS for supporting an disconnected MS disconnected from a BS in a wireless communication system includes receiving a rescue signal from the disconnected MS; collecting information to determine a support MS for the disconnected MS; and transmitting the collected information to a serving BS.

公开(公告)号：US09860042B2

公开(公告)日：2018-01-02

申请号：US13207709

申请日：2011-08-11

Applicant: Chi-Woo Lim ,  Jeong-Ho Park

Inventor： Chi-Woo Lim ,  Jeong-Ho Park

IPC: H04W4/00 ,  H04L5/00 ,  H04L27/26

CPC classification number: H04L5/0053 ,  H04L5/0066 ,  H04L5/0094 ,  H04L27/261

Abstract: A method of a mobile station for transmitting a ranging signal in a wireless communication system which supports Fractional Frequency Reuse (FFR) and an apparatus for performing the method are provided. The method includes receiving information of ranging resource allocation, from a base station, based on the information of the ranging resource allocation, determining a cell identifier and a Frequency Partition (FP) location for uplink control channels, determining a subband index for the ranging resource allocation based on the cell identifier and a number of subbands allocated to the FP location for the uplink control channels, and transmitting a ranging signal based on the subband index for the ranging resource allocation. Thus, interference to a neighboring cell may be reduced in the ranging channel transmission.

公开(公告)号：US09621302B2

公开(公告)日：2017-04-11

申请号：US12804848

申请日：2010-07-30

Applicant: Chi-Woo Lim ,  Ji-Yun Seol ,  Sung-Eun Park

Inventor： Chi-Woo Lim ,  Ji-Yun Seol ,  Sung-Eun Park

IPC: H04L1/00

CPC classification number: H04L1/0041

Abstract: An apparatus and a method segment an allocated resource in data transmission in a wireless communication system. When a size of transmission data is large, the data information bit is distributed to one or more forward error correction (FEC) blocks with consideration of a size of the data information bit. A number of data tones is determined based on control information with respect to each of the one or more FEC blocks. The data information bit distributed to the one or more FEC blocks is mapped into a data tone with consideration of the number of data tones determined for each of the one or more FEC blocks.

公开(公告)号：US09210019B2

公开(公告)日：2015-12-08

申请号：US12821722

申请日：2010-06-23

Applicant: Chi-Woo Lim ,  Sung-Eun Park

Inventor： Chi-Woo Lim ,  Sung-Eun Park

IPC: H04W4/00 ,  H04L27/26 ,  H04L5/00

CPC classification number: H04L27/262 ,  H04L5/0053 ,  H04L27/2615

Abstract: An apparatus and method for reducing a Peak to Average Power Ratio (PAPR) of a Secondary Advanced (SA) preamble in a wireless communication system are provided. A method for transmitting an SA preamble includes determining an SA preamble, constructed in a unit of subblocks, according to a frequency band to be used for transmitting information, determining a sequence for reducing a PAPR of the SA preamble in consideration of at least one of a frequency band, a segment IDentifier (ID), and the number of antennas transmitting the SA preamble, updating the SA preamble using the determined sequence, and transmitting the updated SA preamble to a receive end.

Abstract translation: 提供了一种用于降低无线通信系统中的次级高级（SA）前导码的峰均功率比（PAPR）的装置和方法。 一种用于发送SA前导码的方法包括：根据用于发送信息的频带来确定以子块为单位构成的SA前导码;确定用于减少SA前同步码的PAPR的序列，以考虑以下中的至少一个： 频带，段标识符（ID）和发送SA前同步码的天线的数量，使用所确定的序列更新SA前同步码，并将更新的SA前导码发送到接收端。