公开(公告)号：US09705640B2

公开(公告)日：2017-07-11

申请号：US14046209

申请日：2013-10-04

Applicant: Samsung Electronics Co. Ltd.

Inventor： Seho Myung ,  Hyun-Koo Yang ,  Sung-Hee Hwang

IPC: H03M13/00 ,  H03M13/09 ,  H03M13/11 ,  H03M13/15 ,  H03M13/27 ,  H04L1/00 ,  H03M13/37

CPC classification number: H04L1/0057 ,  H03M13/098 ,  H03M13/1102 ,  H03M13/1515 ,  H03M13/2707 ,  H03M13/373 ,  H03M13/6356 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/0071 ,  H04L1/0075 ,  H04L2001/0093

Abstract: A method and apparatus for decoding received packets in a broadcasting and communication system is provided. The method includes reconstructing a source block by arranging source packets received from a sender on a two-dimensional array having a width of a given symbol size, and determining at least one Erased Subdivided Encoding Symbol Index (E-SESI) corresponding to at least one source packet which is not successfully received in the reconstructed source block, determining a symbol unit for Forward Error Correction (FEC) decoding based on the at least one E-SESI, and performing FEC decoding on the reconstructed source block depending on the determined symbol unit.

公开(公告)号：US09578292B2

公开(公告)日：2017-02-21

申请号：US14360480

申请日：2012-11-23

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sung-Hee Hwang ,  Kyung-Mo Park ,  Sung-Ryeul Rhyu ,  Hyun-Koo Yang ,  Sung-Oh Hwang

IPC: H04L13/00 ,  H04N19/00 ,  H04L1/00 ,  H03M13/29 ,  H03M13/00 ,  H03M13/11 ,  H03M13/15 ,  H03M13/35 ,  H03M13/37

CPC classification number: H04L1/0041 ,  H03M13/1102 ,  H03M13/1515 ,  H03M13/2906 ,  H03M13/35 ,  H03M13/3761 ,  H03M13/618 ,  H03M13/6356 ,  H03M13/6362 ,  H04L1/0017 ,  H04L1/0066 ,  H04L1/007 ,  H04L1/0075 ,  H04L1/008 ,  H04L1/0083 ,  H04N19/30 ,  H04N19/89

Abstract: The present invention relates to a device and method for transmitting/receiving a packet in a communication system. The present invention includes: the processes of determining at least one MPEG media transport (MMT) asset protected by an application layer forward error correction (AL-FEC); determining at least one FEC flow for transmitting the at least one MMT asset; determining the MMT asset transmitted from the at least one FEC flow in each case and determining an FEC coding structure to apply to the at least one FEC flow; producing at least one source flow by dividing the MMT asset transmitted from the at least one FEC flow on a transmission unit basis; and producing and transmitting at least one parity flow by performing AL-FEC encoding on the at least one source flow according to the FEC coding structure.

Abstract translation: 本发明涉及在通信系统中发送/接收分组的装置和方法。 本发明包括：确定由应用层前向纠错（AL-FEC）保护的至少一个MPEG媒体传输（MMT）资产的过程; 确定用于发送所述至少一个MMT资产的至少一个FEC流; 确定在每种情况下从所述至少一个FEC流发送的MMT资产，并确定应用于所述至少一个FEC流的FEC编码结构; 通过在传输单元的基础上划分从至少一个FEC流发送的MMT资产来产生至少一个源流; 以及通过根据所述FEC编码结构对所述至少一个源流执行AL-FEC编码来产生和发送至少一个奇偶校验流。

公开(公告)号：US20150280743A1

公开(公告)日：2015-10-01

申请号：US14739825

申请日：2015-06-15

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hyun-Koo YANG ,  Sung-Hee Hwang ,  Seho Myung

IPC: H03M13/11 ,  H04L1/00 ,  H03M13/00

CPC classification number: H03M13/116 ,  H03M13/1171 ,  H03M13/611 ,  H03M13/616 ,  H03M13/618 ,  H03M13/6362 ,  H03M13/6516 ,  H03M13/6544 ,  H04L1/0041

Abstract: A method and apparatus are provided for transmitting an LDPC code in a multimedia system. The method includes generating an LDPC code based on a resulting parity check matrix which is generated by performing a row splitting operation on a base parity check matrix; and transmitting the LDPC code. The row splitting operation includes splitting each row block included in the base parity check matrix into row blocks, a number of the row blocks is determined based on a splitting factor, and the splitting factor is determined based on a number of repair symbols included in a repair symbol block of the base parity check matrix, a number of rows included in the base parity check matrix, and a scaling factor for determining a size of each permutation matrix in the resulting parity check matrix and a size of each zero matrix included in the resulting parity check matrix.

Abstract translation: 提供一种在多媒体系统中发送LDPC码的方法和装置。 该方法包括：通过对基本奇偶校验矩阵执行行分割操作而生成的基于所得到的奇偶校验矩阵的LDPC码; 以及发送LDPC码。 行分割操作包括将包括在基本奇偶校验矩阵中的每个行块划分为行块，基于分割因子确定多个行块，并且基于包括在一个 修复基本奇偶校验矩阵的符号块，包括在基本奇偶校验矩阵中的多行，以及用于确定所得到的奇偶校验矩阵中的每个置换矩阵的大小的缩放因子和包括在所述奇偶校验矩阵中的每个零矩阵的大小 产生奇偶校验矩阵。

公开(公告)号：US08977935B2

公开(公告)日：2015-03-10

申请号：US13672233

申请日：2012-11-08

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hyun-Koo Yang ,  Sung-Hee Hwang ,  Seho Myung

IPC: H03M13/00 ,  H03M13/05 ,  H03M13/37 ,  H04L1/00

CPC classification number: H04L1/0041 ,  H03M13/05 ,  H03M13/373 ,  H03M13/6362 ,  H04L1/0057 ,  H04L1/0065 ,  H04L1/0068

Abstract: An apparatus and method for transmitting and receiving an Application Layer-Forward Error Correction (AL-FEC) packet in a multimedia communication system are provided. In the AL-FEC packet transmission method, an AL-FEC packet transmission apparatus generates AL-FEC packets, and transmits the AL-FEC packets to an AL-FEC packet reception apparatus, wherein each of the AL-FEC packets includes an AL-FEC codeword symbol and an AL-FEC header, the AL-FEC codeword symbol is one of AL-FEC codeword symbols included in an AL-FEC codeword block, and the AL-FEC header includes order information indicating an order of an AL-FEC codeword symbol into which the AL-FEC header is inserted among the AL-FEC codeword symbols included in the AL-FEC codeword block.

Abstract translation: 提供了一种用于在多媒体通信系统中发送和接收应用层前向纠错（AL-FEC）分组的装置和方法。 在AL-FEC分组发送方法中，AL-FEC分组发送装置生成AL-FEC分组，并将AL-FEC分组发送到AL-FEC分组接收装置，其中，每个AL-FEC分组包括AL- FEC码字符号和AL-FEC报头，AL-FEC码字符号是包括在AL-FEC码字块中的AL-FEC码字符号之一，并且AL-FEC报头包括指示AL-FEC的顺序的顺序信息 在包括在AL-FEC码字块中的AL-FEC码字符号之间插入AL-FEC头的码字符号。