公开(公告)号：US08423863B2

公开(公告)日：2013-04-16

申请号：US12940484

申请日：2010-11-05

申请人： Pan Soo Kim ,  Dae Ig Chang ,  Ho Jin Lee

发明人： Pan Soo Kim ,  Dae Ig Chang ,  Ho Jin Lee

IPC分类号： G06F11/00

CPC分类号： H04L27/0008

摘要： The present invention separates inputted triple play IP data into Internet and TV data and voice (VoIP) data, encodes the Internet and TV data permitting a long delay time according to the existing DVB-S2 standard, and encodes the voice data permitting only a short delay time according to a DVB-RCS+M standard based 4K mode. Each encoded data is subjected to the orthogonal modulation and the orthogonally modulated voice data is subjected to a direct sequence spectrum spread according to a spreading factor. The spread spectrum signal is multiplexed in a SCPC frequency division multiple access (FDMA) scheme so as to overlap with frequencies allocated to each user.

摘要翻译： 本发明将输入的三重播放IP数据分为因特网和电视数据和语音（VoIP）数据，根据现有的DVB-S2标准对允许长延迟时间的因特网和电视数据进行编码，并对只允许短暂的DVB-S2标准的语音数据进行编码 根据基于DVB-RCS + M标准的4K模式的延迟时间。 对每个编码数据进行正交调制，并且根据扩展因子对正交调制的语音数据进行直接序列频谱扩展。 扩频信号在SCPC分频多址（FDMA）方案中多路复用，以便与分配给每个用户的频率重叠。

公开(公告)号：US08422604B2

公开(公告)日：2013-04-16

申请号：US12518103

申请日：2007-10-30

申请人： Pan-Soo Kim ,  Dae-Ig Chang ,  Deock-Gil Oh ,  Seokheon Kang ,  Deokchang Kang ,  Wonjin Sung

发明人： Pan-Soo Kim ,  Dae-Ig Chang ,  Deock-Gil Oh ,  Seokheon Kang ,  Deokchang Kang ,  Wonjin Sung

IPC分类号： H03D1/00

CPC分类号： H04L27/2656 ,  H04L7/042 ,  H04L27/2675

摘要： Provided is a method for detecting frame sync and frame structure in a satellite broadcasting system, which acquires an estimated value for detecting frame structure and frame sync and overcomes distortion of correlation analysis values by summing differential correlation values for SOF positions in consideration of the variable frame length, and selecting a maximum value in a channel environment with low signal-to-noise ratio and high frequency error. SOF is a sync word indicating the start point of a frame. The method includes the steps of: acquiring SOF differential correlation value sequences; acquiring sums (di,t) of the correlation values normalized for SOF positions based on the number of symbols per frame by using the above-generated SOF differential correlation value sequences; and selecting a maximum value (dz,x) among the sums of correlation values, detecting z as a frame sync position, and detecting x as a frame structure index.

摘要翻译： 提供了一种用于检测卫星广播系统中的帧同步和帧结构的方法，其获取用于检测帧结构和帧同步的估计值，并通过将SOF位置的差分相关值相加考虑到可变帧来克服相关分析值的失真 长度，并在低信噪比和高频误差的信道环境中选择最大值。 SOF是指示帧起始点的同步字。 该方法包括以下步骤：获取SOF差分相关值序列; 通过使用上述生成的SOF差分相关值序列，基于每帧的符号数，获取针对SOF位置归一化的相关值的和（di，t） 并且选择相关值之和中的最大值（dz，x），检测z作为帧同步位置，并且检测x作为帧结构索引。

公开(公告)号：US20110131615A1

公开(公告)日：2011-06-02

申请号：US12957272

申请日：2010-11-30

申请人： In Ki LEE ,  Dae Ig Chang ,  Kwang Deok Seo ,  Won Sup Chi

发明人： In Ki LEE ,  Dae Ig Chang ,  Kwang Deok Seo ,  Won Sup Chi

IPC分类号： H04N7/20 ,  H04B17/00

CPC分类号： H04N7/20 ,  H04H20/51 ,  H04H20/74 ,  H04H40/90

摘要： A source-channel combined coding method including: determining whether a channel signal-to-noise ratio (SNR) is varied or not; when it is determined that the channel SNR is varied, selecting a MODCOD suitable for the channel SNR by referring to a first table defining an SNR threshold value at which data transmission is performed without an error, for each MODCOD designating a low density parity check (LDPC) code rate and a modulation scheme; calculating a source coding rate by using an effective information bit rate of the selected MODCOD; extracting network abstraction layer (NAL) units for each layer from an inputted video frame so as to satisfy the calculated source coding rate, and packetizing the extracted NAL units; binding packets to configure a baseband (BB) frame; and LDPC coding and modulating the BB frame through the code rate and the modulation scheme which are designated by the selected MODCOD.

摘要翻译： 源信道组合编码方法，包括：确定信道信噪比（SNR）是否变化; 当确定信道SNR变化时，通过参考指定低密度奇偶校验的每个MODCOD，通过参考定义不进行数据传输的SNR阈值的第一表来选择适合于信道SNR的MODCOD（ LDPC）码率和调制方案; 通过使用所选MODCOD的有效信息比特率来计算源编码率; 从输入的视频帧中提取每层的网络抽象层（NAL）单元，以便满足所计算的源编码率，并对所提取的NAL单元进行打包; 绑定数据包以配置基带（BB）帧; 以及通过由选择的MODCOD指定的码率和调制方案对BB帧进行LDPC编码和调制。

公开(公告)号：US20110047199A1

公开(公告)日：2011-02-24

申请号：US12507012

申请日：2009-07-21

申请人： Pansoo Kim ,  Dae Ig Chang ,  Wonjin Sung ,  Sangtae Kim ,  Dong-Uk Lee

发明人： Pansoo Kim ,  Dae Ig Chang ,  Wonjin Sung ,  Sangtae Kim ,  Dong-Uk Lee

IPC分类号： G06F17/15

CPC分类号： H04L27/2656 ,  H04L7/042 ,  H04L27/2676

摘要： Provided is a correlation apparatus and method for acquiring a robust synchronization. The correlation method may include: calculating a received symbol phase difference with respect to a received symbol; calculating a correlation SoF symbol phase difference with respect to a correlation SoF symbol for a correlation; calculating a differential correlation value of the received symbol using the received symbol phase difference and the correlation SoF symbol phase difference; calculating a Euclidean distance value of the received symbol using the received symbol phase difference; and calculating a sum correlation value of the received symbol using the differential correlation value and the Euclidean distance value.

摘要翻译： 提供了一种用于获取鲁棒同步的相关装置和方法。 相关方法可以包括：相对于接收到的符号计算接收到的符号相位差; 相对于相关的SoF符号计算相关SoF符号相位差; 使用接收到的符号相位差和相关SoF符号相位差来计算接收符号的差分相关值; 使用所接收的符号相位差计算所述接收符号的欧几里得距离值; 以及使用所述微分相关值和所述欧几里得距离值来计算所述接收符号的和相关值。

公开(公告)号：US20100316161A1

公开(公告)日：2010-12-16

申请号：US12773568

申请日：2010-05-04

申请人： Pan-Soo KIM ,  Dae-Ig Chang ,  Ho-Jin Lee ,  Stefano Cioni ,  Alessandro Vanelli-Coralli ,  Giovanni Emanuele Corazza

发明人： Pan-Soo KIM ,  Dae-Ig Chang ,  Ho-Jin Lee ,  Stefano Cioni ,  Alessandro Vanelli-Coralli ,  Giovanni Emanuele Corazza

IPC分类号： H04L27/00 ,  H04L27/06

CPC分类号： H04L1/0057 ,  H04B7/18528 ,  H04L1/0071 ,  H04L1/009 ,  H04L1/0625 ,  H04L27/2003

摘要： A method for transmitting data using a satellite channel includes: channel-encoding bit data using an e-BCH code; interleaving the encoded data; modulating the interleaved data according to a CPM scheme using four symbols; and transmitting the modulated data to a hub station.

摘要翻译： 使用卫星信道发送数据的方法包括：使用e-BCH码的信道编码比特数据; 交织编码数据; 使用四个符号根据CPM方案调制交错数据; 并将调制的数据发送到中心站。

公开(公告)号：US20100290459A1

公开(公告)日：2010-11-18

申请号：US12812989

申请日：2009-09-11

申请人： Nam-kyung Lee ,  Dae-ig Chang ,  Ho-jin Lee

发明人： Nam-kyung Lee ,  Dae-ig Chang ,  Ho-jin Lee

IPC分类号： H04L12/56

CPC分类号： H04N21/4385 ,  H04N21/2383 ,  H04N21/2389 ,  H04N21/242 ,  H04N21/4382 ,  H04N21/8547

摘要： A variable length packet data transmission apparatus and method are provided. The variable length packet data transmission apparatus using a variable length packet transmission technique includes a data transmitter generating synchronization information for synchronizing data communication with a data receiving apparatus, including the generated synchronization information in transmission data to be transmitted according to a variable length packet transmission technique, and transmitting the transmission data including the synchronization information to the data receiving apparatus, and a data receiver receiving the transmission data including synchronization information from a data transmission apparatus, reconstructing the synchronization information included in the received transmission data, and performing synchronization with the data transmission apparatus using the reconstructed synchronization information.

摘要翻译： 提供了一种可变长度分组数据传输装置和方法。 使用可变长度分组传输技术的可变长度分组数据传输装置包括数据发射机，其生成用于与数据接收装置同步数据通信的同步信息，包括根据可变长度分组传输技术发送的传输数据中产生的同步信息 并且将包括同步信息的发送数据发送到数据接收装置，以及从数据发送装置接收包括同步信息的发送数据的数据接收装置，对接收的发送数据中包含的同步信息进行重构，并与数据进行同步 发送装置使用重构的同步信息。

公开(公告)号：US20100278192A1

公开(公告)日：2010-11-04

申请号：US12808110

申请日：2008-06-27

申请人： Keun-Pyo Hong ,  Hokyom Kim ,  Dae-Ig Chang

发明人： Keun-Pyo Hong ,  Hokyom Kim ,  Dae-Ig Chang

IPC分类号： H04J3/00

CPC分类号： H04J4/005 ,  H04B7/18513 ,  H04B7/212

摘要： Provided is a channel data multiplexing apparatus and method for supporting a variable transmission rate. The channel data multiplexing apparatus includes an input memory for receiving multi-channel baseband data in parallel and storing the baseband data at a first clock rate; an output memory for reading the baseband data stored in the input memory at a second clock rate and storing the baseband data; a multiplexing unit for reading the baseband data stored in the output memory in channel sequence at a third clock rate and outputting the baseband data in serial; and a control unit for controlling address processing and clock rates for data read/write (storage) from/in the input and the output memories and the multiplexing unit depending on a transmission mode.

摘要翻译： 提供一种用于支持可变传输速率的信道数据多路复用装置和方法。 信道数据多路复用装置包括并行接收多信道基带数据并以第一时钟速率存储基带数据的输入存储器; 输出存储器，用于以第二时钟速率读取存储在输入存储器中的基带数据并存储基带数据; 多路复用单元，用于以第三时钟速率以通道序列读出存储在输出存储器中的基带数据，并串行输出基带数据; 以及控制单元，用于根据传输模式来控制来自/在输入和输出存储器和复用单元中的数据的读/写（存储）的地址处理和时钟速率。

公开(公告)号：US20100118920A1

公开(公告)日：2010-05-13

申请号：US12536952

申请日：2009-08-06

申请人： Pan-soo KIM ,  Dae-ig CHANG ,  Ho-jin LEE ,  A. VANELLI-CORALLI ,  G.E. CORAZZA ,  C. PALESTINI ,  R. PEDONE ,  M. VILLANTI

发明人： Pan-soo KIM ,  Dae-ig CHANG ,  Ho-jin LEE ,  A. VANELLI-CORALLI ,  G.E. CORAZZA ,  C. PALESTINI ,  R. PEDONE ,  M. VILLANTI

IPC分类号： H04B1/707

CPC分类号： H04B7/18513 ,  H04B1/7077 ,  H04B1/7093 ,  H04B2201/70715

摘要： Satellite communication transmitter and receiver in a DVB-S2 system are provided. The satellite communication transmitter includes a modulator to modulate a satellite communication signal to be transmitted, and a spread spectrum unit to spread the modulated signal and transmit the spread signal. Accordingly, it is possible to reduce interference with a neighboring channel.

摘要翻译： 提供DVB-S2系统中的卫星通信发射机和接收机。 卫星通信发射机包括调制器以调制待发射的卫星通信信号，扩频单元扩展调制信号并发射扩展信号。 因此，可以减少对相邻信道的干扰。

公开(公告)号：US20100074221A1

公开(公告)日：2010-03-25

申请号：US12553622

申请日：2009-09-03

申请人： Hyun-ha HONG ,  Ki-seop HAN ,  Dae-ig CHANG ,  Ho-jin LEE

发明人： Hyun-ha HONG ,  Ki-seop HAN ,  Dae-ig CHANG ,  Ho-jin LEE

IPC分类号： H04W36/00

CPC分类号： H04W36/0011 ,  H04W80/04 ,  H04W84/06 ,  H04W84/12

摘要： Provided are an apparatus for controlling handover between heterogeneous networks, a method of performing handover between heterogeneous networks in a mobile router, and a mobile router. The method includes determining whether a handover to a network employing a different method from a network to which the mobile router belongs is required based on information prestored in the mobile router, the network to which the mobile router belongs determined by current location information of the mobile router and performing the handover according to the result of the determination. Mobility detection time can be reduced by applying the handover technique between wireless/satellite networks based on link trigger and location to a mobile router moving at high speed. Thus, service interruption can be prevented regardless of movement speed, even in a satellite shadow region such as a station.

摘要翻译： 提供了一种用于控制异构网络之间的切换的装置，在移动路由器中的异构网络之间执行切换的方法和移动路由器。 该方法包括基于在移动路由器中预先存储的信息来确定是否需要使用与移动路由器所属的网络不同的方法的切换，移动路由器所属的网络由移动台的当前位置信息确定 路由器并根据确定的结果执行切换。 可以通过在基于链路触发和位置的无线/卫星网络之间通过移动高速移动路由器的切换技术来减少移动性检测时间。 因此，即使在诸如车站的卫星影像区域中，不管运动速度如何，都可以防止服务中断。

公开(公告)号：US20100007743A1

公开(公告)日：2010-01-14

申请号：US12518242

申请日：2007-10-31

申请人： Pan-Soo Kim ,  Dae-Ig Chang ,  Deock-Gil Oh ,  Sangtae Kim ,  Seokheon Kang ,  Wonjin Sung

发明人： Pan-Soo Kim ,  Dae-Ig Chang ,  Deock-Gil Oh ,  Sangtae Kim ,  Seokheon Kang ,  Wonjin Sung

IPC分类号： H04N17/00

CPC分类号： H04N21/4382 ,  H04H40/90 ,  H04L7/042 ,  H04L27/2656 ,  H04N7/20 ,  H04N21/238 ,  H04N21/2383 ,  H04N21/242 ,  H04N21/6143

摘要： Provided is a method for detecting frame sync and frame structure in a satellite broadcasting system. The method for detecting frame sync and frame structure includes the steps of: calculating differential correlation values of reception symbols; generating index sequences of reception symbols whose differential correlation values calculated above exceed a threshold value; calculating positions estimated as frame start points which correspond to a total frame number based on the number of symbols per frame for each frame structure; and detecting frame sync and frame structure based on the umber of positions where the above-calculated frame start point estimated positions and the above-generated index sequences are matched.

摘要翻译： 提供了一种用于在卫星广播系统中检测帧同步和帧结构的方法。 用于检测帧同步和帧结构的方法包括以下步骤：计算接收符号的差分相关值; 产生上述计算出的差分相关值的接收符号的索引序列超过阈值; 基于每个帧结构的每个符号的数量，计算估计为与总帧数相对应的帧起始点的位置; 以及基于上述计算出的帧起始点估计位置和上述生成的索引序列匹配的位置的数量来检测帧同步和帧结构。