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    Method and apparatus for receiving data in a communication system
    31.
    发明申请
    Method and apparatus for receiving data in a communication system 有权
    用于在通信系统中接收数据的方法和装置

    公开(公告)号：US20070118786A1

    公开(公告)日：2007-05-24

    申请号：US11603377

    申请日：2006-11-21

    申请人： Chi-Woo Lim ,  Gyu-Bum Kyung ,  Sung-Eun Park ,  Jae-Yoel Kim ,  Hong-Sil Jeong ,  Seung-Hoon Choi

    发明人： Chi-Woo Lim ,  Gyu-Bum Kyung ,  Sung-Eun Park ,  Jae-Yoel Kim ,  Hong-Sil Jeong ,  Seung-Hoon Choi

    IPC分类号： H03M13/00 ,  H04L1/18

    CPC分类号： H03M13/1105 ,  H03M13/29 ,  H03M13/2948 ,  H03M13/3723 ,  H03M13/6306 ,  H04L1/005 ,  H04L1/08 ,  H04L1/1607 ,  H04L1/1812 ,  H04L1/1829

    摘要： A method and apparatus is provided for receiving data in a receiver of a communication system. In the receiver, a first calculator calculates a Log Likelihood Ratio (LLR) value of data transmitted from a transmitter, a decoder performs iterative decoding on the transmitted data using the LLR value calculated by the first calculator. A second calculator determines whether there is an error in the decoded data by calculating an error of the data decoded by the decoder. A storage stores an LLR value of the decoded data according to the determination result of the second calculator. An adder adds up the LLR value calculated by the first calculator and the LLR value stored in the storage. A controller performs a control operation such that if the data transmitted from the transmitter is retransmitted data, the decoder performs iterative decoding using the LLR value added by the adder, and if the data transmitted from the transmitter is not retransmitted data, the decoder performs iterative decoding using the LLR value calculated by the first calculator.

    摘要翻译： 提供了一种用于在通信系统的接收机中接收数据的方法和装置。 在接收机中，第一计算器计算从发送器发送的数据的对数似然比（LLR）值，解码器使用由第一计算器计算出的LLR值对所发送的数据执行迭代解码。 第二计算器通过计算由解码器解码的数据的误差来确定解码数据中是否存在错误。 存储器根据第二计算器的确定结果存储解码数据的LLR值。 加法器将由第一计算器计算的LLR值和存储在存储器中的LLR值相加。 控制器执行控制操作，使得如果从发送器发送的数据是重发数据，则解码器使用由加法器添加的LLR值来执行迭代解码，并且如果从发送器发送的数据不是重传数据，则解码器执行迭代 使用由第一计算器计算的LLR值进行解码。

    Apparatus and method for transmitting/receiving signal in a communication system using low density parity check code
    33.
    发明申请
    Apparatus and method for transmitting/receiving signal in a communication system using low density parity check code 有权
    在使用低密度奇偶校验码的通信系统中发送/接收信号的装置和方法

    公开(公告)号：US20070089027A1

    公开(公告)日：2007-04-19

    申请号：US11528044

    申请日：2006-09-27

    申请人： Chi-Woo Lim ,  Gyu-Bum Kyung ,  Sung-Eun Park ,  Jae-Yoel Kim ,  Hong-Sil Jeong ,  Seung-Hoon Choi ,  Dong-Seek Park

    发明人： Chi-Woo Lim ,  Gyu-Bum Kyung ,  Sung-Eun Park ,  Jae-Yoel Kim ,  Hong-Sil Jeong ,  Seung-Hoon Choi ,  Dong-Seek Park

    IPC分类号： H03M13/00

    CPC分类号： H03M13/1162 ,  H03M13/618 ,  H03M13/6306

    摘要： An apparatus is provided for transmitting a signal in a communication system using a Low Density Parity Check (LDPC) code. A controller determines a number of ‘0’s to be inserted in information data according to a first coding rate to be applied when generating the information data into an LDPC code, and determines the number of ‘0’s to be removed from the LDPC code. A ‘0’ inserter inserts ‘0s’ in the information data according to control of the controller. An LDPC encoder generates the LDPC code by encoding the ‘0’-inserted signal according to a first parity check matrix. A ‘0’ remover removes the inserted ‘0’s from the LDPC code.

    摘要翻译： 提供了一种用于在使用低密度奇偶校验（LDPC）码的通信系统中发送信号的装置。 控制器根据在将信息数据生成为LDPC码时应用的第一编码率来确定要插入到信息数据中的“0”数，并且确定要从LDPC码中移除的“0”的数目。 “0”插入器根据控制器的控制在信息数据中插入“0”。 LDPC编码器通过根据第一奇偶校验矩阵对“0”插入的信号进行编码来生成LDPC码。 “0”去除器从LDPC码中移除插入的0。

    Method and apparatus for supporting handover in heterogeneous network
    36.
    发明授权
    Method and apparatus for supporting handover in heterogeneous network 失效
    支持异构网络切换的方法和装置

    公开(公告)号：US08543115B2

    公开(公告)日：2013-09-24

    申请号：US13353613

    申请日：2012-01-19

    申请人： Su-Ryong Jeong ,  Seung-Hoon Choi ,  Sung-Eun Park ,  Tae-Young Kim

    发明人： Su-Ryong Jeong ,  Seung-Hoon Choi ,  Sung-Eun Park ,  Tae-Young Kim

    IPC分类号： H04W36/00

    CPC分类号： H04W36/30 ,  H04W36/04 ,  H04W36/14

    摘要： A method for operating a terminal for supporting a handover in a heterogeneous network is provided. The method includes measuring received signal strength from a target small base station, so that a Signal-to-Noise Ratio (SNR) is estimated, when the SNR of the target small base station that considers a biased value for range expansion is greater than an SNR of a serving macro base station, determining whether an SNR of the target small base station that does not consider the biased value for the range expansion is equal to or less than a threshold, and when the SNR of the target small base station that does not consider the biased value for the range expansion is equal to or less than the threshold, transmitting indication information, informing that a low SNR is expected when the terminal performs a handover to the target small base station, to the serving macro base station.

    摘要翻译： 提供了一种用于操作终端以支持异构网络中的切换的方法。 该方法包括测量来自目标小型基站的接收信号强度，从而当考虑范围扩展的偏置值的目标小型基站的SNR大于一个时，估计信噪比（SNR） SNR，确定目标小型基站的SNR不考虑用于范围扩展的偏置值的SNR是否等于或小于阈值，以及当目标小型基站的SNR是否为 不考虑范围扩展的偏置值等于或小于阈值，发送指示信息，通知在终端执行向目标小型基站的切换时预期低SNR到服务宏基站。

    Apparatus and method for transmitting/receiving signal in a communication system
    37.
    发明授权
    Apparatus and method for transmitting/receiving signal in a communication system 有权
    在通信系统中发送/接收信号的装置和方法

    公开(公告)号：US07908541B2

    公开(公告)日：2011-03-15

    申请号：US11751339

    申请日：2007-05-21

    申请人： Gyu-Bum Kyung ,  Seung-Hoon Choi ,  Hong-Sil Jeong ,  Dong-Seek Park ,  Jae-Yoel Kim ,  Sung-Eun Park ,  Hyun-Koo Yang ,  Kyeong-Cheol Yang

    发明人： Gyu-Bum Kyung ,  Seung-Hoon Choi ,  Hong-Sil Jeong ,  Dong-Seek Park ,  Jae-Yoel Kim ,  Sung-Eun Park ,  Hyun-Koo Yang ,  Kyeong-Cheol Yang

    IPC分类号： H03M13/00

    CPC分类号： H03M13/11 ,  H03M13/255 ,  H03M13/27

    摘要： A signal transmission apparatus in a communication system is disclosed. A channel interleaver generates an interleaved vector by channel-interleaving a Low Density Parity Check (LDPC) codeword according to a channel interleaving rule, and a modulator generates a modulation symbol by modulating the interleaved vector according to a modulation scheme. The channel interleaving rule is one of a first channel interleaving rule and a second channel interleaving rule. The first channel interleaving rule is a rule for setting degree distribution for nodes in a factor graph of the LDPC codeword separately for individual levels supported by the modulation scheme. The second channel interleaving rule is a rule for allowing coded bits included in the LDPC codeword to be interleaved according to an unequal error characteristic of the modulation scheme.

    摘要翻译： 公开了一种通信系统中的信号发送装置。 信道交织器根据信道交织规则通过对低密度奇偶校验（LDPC）码字进行信道交织来生成交错矢量，并且调制器通过根据调制方式调制交织向量来产生调制符号。 信道交织规则是第一信道交织规则和第二信道交织规则之一。 第一信道交织规则是用于针对由调制方案支持的各个级别分别设置LDPC码字的因子图中的节点的度数分布的规则。 第二信道交织规则是用于允许根据调制方案的不等错误特性来交织包含在LDPC码字中的编码比特的规则。

    Apparatus and method for transmitting/receiving pilot signal in communication system using OFDM scheme
    39.
    发明授权
    Apparatus and method for transmitting/receiving pilot signal in communication system using OFDM scheme 有权
    使用OFDM方案在通信系统中发送/接收导频信号的装置和方法

    公开(公告)号：US07583586B2

    公开(公告)日：2009-09-01

    申请号：US11167663

    申请日：2005-06-27

    申请人： Sung-Eun Park ,  Seung-Hoon Choi ,  Dong-Seek Park ,  Jae-Yoel Kim ,  Ji-Ho Jang ,  Pan-Yuh Joo

    发明人： Sung-Eun Park ,  Seung-Hoon Choi ,  Dong-Seek Park ,  Jae-Yoel Kim ,  Ji-Ho Jang ,  Pan-Yuh Joo

    IPC分类号： H04J11/00

    CPC分类号： H04L5/0048 ,  H04B2201/70701 ,  H04B2201/709709 ,  H04J13/0048 ,  H04J13/16 ,  H04L5/0023 ,  H04L27/2613 ,  H04L27/262 ,  H04L27/2655

    摘要： Disclosed is a method for transmitting a reference signal for identification of each cell in a communication system including a plurality of cells each of which is identified by a cell identifier. The method includes receiving a cell identifier, and generating a block code corresponding to the cell identifier using a predetermined block code generator matrix, and generating a first part sequence using the block code; selecting a second part sequence in accordance with the cell identifier; generating a reference signal of a frequency domain using the first part sequence and the second part sequence; converting the reference signal of the frequency domain to a reference signal of a time domain through an Inverse Fast Fourier Transform operation and transmitting the reference signal of the time domain in a predetermined reference signal transmission interval.

    摘要翻译： 公开了一种在通信系统中发送用于识别每个小区的参考信号的方法，该通信系统包括多个小区，每个小区由小区标识符标识。 该方法包括接收小区标识符，并使用预定的块码发生器矩阵生成与该小区标识符相对应的块码，并使用块码生成第一部分序列; 根据小区标识符选择第二部分序列; 使用所述第一部分序列和所述第二部分序列生成频域的参考信号; 通过反傅立叶逆变换操作将频域的参考信号转换为时域的参考信号，并以预定的参考信号传输间隔发射时域的参考信号。