知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

113 条记录 (耗时 0.022 秒)

    Mobile communication system and data transmission method thereof
    1.
    发明授权
    Mobile communication system and data transmission method thereof 有权

    公开(公告)号：US10313042B2

    公开(公告)日：2019-06-04

    申请号：US14002489

    申请日：2012-05-17

    申请人： Seung Hoon Choi ,  Young Bum Kim ,  Joon Young Cho ,  Hyoung Ju Ji

    发明人： Seung Hoon Choi ,  Young Bum Kim ,  Joon Young Cho ,  Hyoung Ju Ji

    IPC分类号： H04J3/16 ,  H04L1/18

    摘要： The disclosure relates to data transmission method and apparatus for transmitting UL grant or ACK/NACK at flexible subframes in a Time Division Duplex (TDD) system. The data transmission method of a base station according to the present invention includes configuring subframes irrelevant to Hybrid Automatic Repeat reQuest (HARQ) process as flexible subframes; scheduling uplink transmission at the flexible subframes with uplink grant; receiving uplink data transmitted by a terminal at the flexible subframes as scheduled; and transmitting, when decoding the uplink data fails, HARQ acknowledgement/negative acknowledgement (ACK/NACK) or uplink grant to request retransmission of the uplink data. The data transmission method of the present invention is capable of utilizing flexible subframes for uplink transmission without influencing the uplink HARQ process associated with the downlink subframes configured as flexible subframes.

    Apparatus and method for generating synchronization channel in a wireless communication system
    4.
    发明授权
    Apparatus and method for generating synchronization channel in a wireless communication system 有权
    一种用于在无线通信系统中产生同步信道的装置和方法

    公开(公告)号：US08548074B2

    公开(公告)日：2013-10-01

    申请号：US12655705

    申请日：2010-01-06

    申请人： Sung-Eun Park ,  Jae-Weon Cho ,  Seung-Hoon Choi ,  Chi-Woo Lim ,  Song-Nam Hong

    发明人： Sung-Eun Park ,  Jae-Weon Cho ,  Seung-Hoon Choi ,  Chi-Woo Lim ,  Song-Nam Hong

    IPC分类号： H04L27/28 ,  H04L27/00 ,  H04B1/00 ,  H04B7/00 ,  H04B1/02 ,  H04W4/00

    CPC分类号： H04W56/0015 ,  H04L5/0007 ,  H04L5/0053 ,  H04L27/2613 ,  H04L27/2614 ,  H04L27/2626 ,  H04L27/2655

    摘要： A Synchronization Channel (SCH) transmission method includes generating a Primary SCH (P-SCH) sequence according to supplementary information. The supplementary information includes at least one of Base Station (BS) type information, Fast Fourier Transform (FFT) size information, BandWidth (BW) information, group information, sector information, and carrier type information. The method also includes modulating the P-SCH sequence and mapping the modulated P-SCH sequence to subcarriers within a predefined subcarrier set. The subcarriers are included in the subcarrier set being spaced one subcarrier interval apart. The method further includes generating a P-SCH symbol by Orthogonal Frequency Division Multiplexing (OFDM)-modulating the P-SCH sequence mapped to the subcarriers, and transmitting the P-SCH symbol.

    摘要翻译： 同步信道（SCH）发送方法包括根据补充信息生成主SCH（P-SCH）序列。 补充信息包括基站（BS）类型信息，快速傅里叶变换（FFT）大小信息，带宽（BW）信息，组信息，扇区信息和载波类型信息中的至少一个。 该方法还包括调制P-SCH序列并将调制的P-SCH序列映射到预定子载波集内的子载波。 子载波被包括在间隔一个子载波间隔的子载波集合中。 该方法还包括通过正交频分复用（OFDM）生成P-SCH符号，调制映射到子载波的P-SCH序列，并发送P-SCH符号。

    Apparatus and method for generating low density parity check code
    5.
    发明授权
    Apparatus and method for generating low density parity check code 有权
    用于生成低密度奇偶校验码的装置和方法

    公开(公告)号：US08296636B2

    公开(公告)日：2012-10-23

    申请号：US12396857

    申请日：2009-03-03

    申请人： Seung-Hoon Choi ,  Sung-Eun Park ,  Song-Nam Hong ,  Ho-Kyu Choi ,  Jae-Weon Cho

    发明人： Seung-Hoon Choi ,  Sung-Eun Park ,  Song-Nam Hong ,  Ho-Kyu Choi ,  Jae-Weon Cho

    IPC分类号： H03M13/03

    CPC分类号： H03M13/1142

    摘要： A Low Density Parity Check (LDPC) encoding apparatus and method are provided. The LDPC encoding apparatus includes a controller for determining a number of zeros b to be inserted in an input information vector when a length of the input information vector is less than a length of a use information vector of a parity-check matrix, for selecting b stopping sets Sd using the parity-check matrix, for selecting one variable node from each of the b stopping sets Sd using a selection scheme, and for determining positions corresponding to the selected variable node from each of the b stopping sets Sd as positions where zeros are to be inserted.

    摘要翻译： 提供了一种低密度奇偶校验（LDPC）编码装置和方法。 LDPC编码装置包括控制器，用于当输入信息向量的长度小于奇偶校验矩阵的使用信息向量的长度时，确定要在输入信息向量中插入的零个数b，用于选择b 使用奇偶校验矩阵的停止组Sd，用于使用选择方案从b个停止集合Sd中的每一个中选择一个变量节点，以及用于从b个停止集合Sd中的每一个确定与所选择的变量节点相对应的位置作为零的位置 将被插入。

    Apparatus and method for transmitting/receiving secondary synchronization channel in a broadband wireless communication system
    7.
    发明授权
    Apparatus and method for transmitting/receiving secondary synchronization channel in a broadband wireless communication system 有权
    用于在宽带无线通信系统中发送/接收辅同步信道的装置和方法

    公开(公告)号：US08229052B2

    公开(公告)日：2012-07-24

    申请号：US12683728

    申请日：2010-01-07

    申请人： Sung-Eun Park ,  Jae-Weon Cho ,  Seung-Hoon Choi ,  Chi-Woo Lim ,  Song-Nam Hong

    发明人： Sung-Eun Park ,  Jae-Weon Cho ,  Seung-Hoon Choi ,  Chi-Woo Lim ,  Song-Nam Hong

    IPC分类号： H04L7/00

    CPC分类号： H04L5/0048 ,  H04L5/0007 ,  H04L27/2613

    摘要： An apparatus and method for transmitting/receiving an S-SCH in an Institute of Electrical and Electronics Engineers (IEEE) 802.16m wireless communication system are provided. A method for transmitting, by a transmitter, a Secondary Synchronization CHannel (S-SCH) in a communication system includes generating a sequence depending on a cell IDentification (ID), determining a subcarrier set comprising subcarriers to map the generated sequence, based on a Fast Fourier Transform (FFT) size and a segment ID, and mapping the generated sequence to the subcarriers of the determined subcarrier set.

    摘要翻译： 提供了一种用于在电气和电子工程师协会（IEEE）802.16m无线通信系统中发送/接收S-SCH的装置和方法。 一种用于在通信系统中由发射机发送次同步信道（S-SCH）的方法包括根据小区标识（ID）生成一个序列，确定包括子载波的子载波集，以映射所生成的序列，基于 快速傅里叶变换（FFT）大小和段ID，并将生成的序列映射到所确定的子载波集合的子载波。

    Apparatus and method for transmitting and receiving signal in a communication system
    8.
    发明授权
    Apparatus and method for transmitting and receiving signal in a communication system 有权
    在通信系统中发送和接收信号的装置和方法

    公开(公告)号：US08055987B2

    公开(公告)日：2011-11-08

    申请号：US12074890

    申请日：2008-03-06

    申请人： Hong-Sil Jeong ,  Dong-Seek Park ,  Jae-Yeol Kim ,  Sung-Eun Park ,  Seung-Hoon Choi

    发明人： Hong-Sil Jeong ,  Dong-Seek Park ,  Jae-Yeol Kim ,  Sung-Eun Park ,  Seung-Hoon Choi

    IPC分类号： G06F11/00

    CPC分类号： H03M13/1185 ,  H03M13/118 ,  H03M13/6362

    摘要： An apparatus and method for transmitting and receiving a signal in a communication system are provided. The signal transmission apparatus generates a parity check matrix for an LDPC code in accordance with a code rate to be used and generates a codeword vector by encoding an information vector using the parity check matrix. When the code rate is a first code rate, the signal transmission apparatus generates a first parity check matrix as the parity check matrix for the LDPC code. When the code rate is the second code rate, the signal transmission apparatus generates a second parity check matrix supporting a second code rate lower than the first code rate by adding columns of a degree of 1 and columns of a degree of 2 to the first parity check matrix and generates the second parity check matrix as the parity check matrix for the LDPC code.

    摘要翻译： 提供了一种用于在通信系统中发送和接收信号的装置和方法。 信号发送装置根据要使用的码率生成用于LDPC码的奇偶校验矩阵，并且通过使用奇偶校验矩阵对信息向量进行编码来生成码字向量。 当码率是第一码率时，信号发送装置生成第一奇偶校验矩阵作为LDPC码的奇偶校验矩阵。 当码率是第二码率时，信号发送装置通过将1的度数和2度的列的列相加于第一奇偶校验码来生成支持低于第一码率的第二码率的第二奇偶校验矩阵 生成第二奇偶校验矩阵作为LDPC码的奇偶校验矩阵。