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1. 发明申请

US20110047199A1 CORRELATION APPARATUS AND METHOD FOR ACQUIRING ROBUST SYNCHRONIZATION 审中-公开
标题翻译：相关设备和获得稳健同步的方法
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。

2. 发明授权

US08411614B2 Apparatus for mobile satellite communications and method of controlling communications route 有权
标题翻译：移动卫星通信装置及通信路由控制方法
公开(公告)号：US08411614B2
公开(公告)日：2013-04-02
申请号：US12628485
申请日：2009-12-01
申请人： Min Su Shin , Jang Hee Kang , Dae Ig Chang , Ho Jin Lee
发明人： Min Su Shin , Jang Hee Kang , Dae Ig Chang , Ho Jin Lee
IPC分类号： H04B7/185 , H04Q7/00
CPC分类号： H04B7/18582 , H04B7/0817 , H04B7/18534 , H04L1/0061
摘要： A mobile satellite transmission/reception apparatus and a communications route control method using the same are disclosed. The mobile satellite transmission/reception apparatus comprises: a first antenna unit configured to receive a signal along a first communications route; a second antenna unit configured to receive a signal along a second communications route; and a data processor configured to compare cyclic redundancy check (CRC) values with respect to packet streams of signals respectively received by the first and second antenna units, and change communications route to one of the first and second communications routes if packets having the same CRC value are detected.
摘要翻译：公开了一种移动卫星发送/接收装置和使用该移动卫星收发装置的通信路径控制方法。移动卫星发送/接收装置包括：第一天线单元，被配置为沿着第一通信路由接收信号; 第二天线单元，被配置为沿第二通信路线接收信号; 以及数据处理器，被配置为将循环冗余校验（CRC）值相对于由第一和第二天线单元分别接收的信号的分组流进行比较，并且如果具有相同CRC的分组，则将通信路由改变为第一和第二通信路由之一检测到值。

3. 发明授权

US08179778B2 Method and system for effective adaptive coding and modulation in satellite communication system 失效
标题翻译：卫星通信系统中有效的自适应编码和调制方法及系统
公开(公告)号：US08179778B2
公开(公告)日：2012-05-15
申请号：US12516258
申请日：2007-11-29
申请人： Tae Hoon Kim , Pan Soo Kim , Min Su Shin , Dae Ig Chang
发明人： Tae Hoon Kim , Pan Soo Kim , Min Su Shin , Dae Ig Chang
IPC分类号： H04J9/00 , H04J3/22
CPC分类号： H04L1/0009 , H03M13/09 , H03M13/2714 , H03M13/2957 , H03M13/353 , H03M13/6356 , H03M13/6362 , H04L1/0003 , H04L1/0066
摘要： A Second Generation Digital Video Broadcasting via Satellite (DVB-S2) system is provided. More particularly, a method and apparatus for maintaining synchronization of a signal by changing an Adaptive Coding and Modulation (ACM) method that is used for a conventional DVB-S2 system are provided. In the apparatus and method, an FEC frame of a variable length is formed by turbo encoding rather than Bose-Chaudhuri-Hocquenghem (BCH) and Low Density Parity Check (LDPC) encoding, and a Physical Layer (PL) frame of a specific length is formed regardless of a modulation method, so that a satellite terminal receives a signal transmitted at a specific length regardless of a modulation method or a coding rate to easily maintain synchronization without interruption and efficiently transmit the signal.
摘要翻译：提供了通过卫星（DVB-S2）系统的第二代数字视频广播。更具体地，提供了一种用于通过改变用于常规DVB-S2系统的自适应编码和调制（ACM）方法来维持信号同步的方法和装置。在该装置和方法中，通过turbo编码而不是Bose-Chaudhuri-Hocquenghem（BCH）和低密度奇偶校验（LDPC）编码以及特定长度的物理层（PL）帧来形成可变长度的FEC帧无论调制方式如何，卫星终端接收不同调制方式或编码率的特定长度发送的信号，以便不间断地容易地保持同步，并有效地发送信号。

4. 发明授权

US08423863B2 Terminal transmission apparatus for providing multimedia service via satellite communication link and method for providing multimedia service using the same 有权
标题翻译：通过卫星通信链路提供多媒体业务的终端传输装置及使用该多媒体业务的多媒体业务的方法
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。

5. 发明申请

US20110131615A1 SOURCE-CHANNEL COMBINED CODING METHOD AND SATELLITE BROADCASTING SYSTEM USING THE SAME 失效
标题翻译：源信道组合编码方法和使用该方法的卫星广播系统
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。

6. 发明授权

US08509152B2 Method and apparatus for routing in wireless network 有权
标题翻译：用于在无线网络中路由的方法和装置
公开(公告)号：US08509152B2
公开(公告)日：2013-08-13
申请号：US12996925
申请日：2008-11-05
申请人： Nam Kyung Lee , Dae Ig Chang , Ho Jin Lee , Dong Jun Lee
发明人： Nam Kyung Lee , Dae Ig Chang , Ho Jin Lee , Dong Jun Lee
IPC分类号： H04W4/00
CPC分类号： H04W40/28 , H04L45/123 , H04L45/125
摘要： A method of routing a wireless network is provided. The method is performed by each of a group of nodes and includes: receiving a routing request signal; determining whether a node itself is a destination node, by referring to a traffic distribution table showing traffic throughput of the group of nodes and an intermediate-node weight table showing weights of intermediate nodes on all paths between the group of nodes and a source node, wherein a route path is selected by referring to the weights of intermediate nodes; and when it is determined that the node itself is the destination node transmitting a routing response signal to the source node that has transmitted the routing request signal, and receiving a packet from the source node, wherein the transmitting and receiving are performed by the determined destination node. By using the method, traffic in wireless network extreme communications can be distributed at intermediate nodes as well as at destination nodes. Therefore, all the networks can be effectively used in extreme circumstances.
摘要翻译：提供了一种路由无线网络的方法。该方法由一组节点中的每一个执行，并且包括：接收路由请求信号; 通过参考示出节点组的流量的流量分布表和表示节点组和源节点之间的所有路径上的中间节点的权重的中间节点权重表来确定节点本身是否是目的地节点，其中通过参考中间节点的权重来选择路由路径; 并且当确定节点本身是目的地节点向已经发送了路由请求信号的源节点发送路由响应信号，并且从源节点接收分组时，由确定的目的地执行发送和接收节点。通过使用该方法，可以在中间节点以及目的地节点处分配无线网络极端通信中的业务。因此，所有网络都可以在极端情况下有效使用。

7. 发明申请

US20110150123A1 TRANSMITTER, RECEIVER, TRANSMITTING METHOD, AND RECEIVING METHOD FOR COMMUNICATION SYSTEM 审中-公开
标题翻译：发射机，接收机，发送方法和接收方法
公开(公告)号：US20110150123A1
公开(公告)日：2011-06-23
申请号：US12915469
申请日：2010-10-29
申请人： Jae Hee HAN , Pan Soo Kim , Dae Ig Chang
发明人： Jae Hee HAN , Pan Soo Kim , Dae Ig Chang
IPC分类号： H04L27/00 , H03K9/00
CPC分类号： H04B7/18576 , H04L27/2657
摘要： The present invention relates to a transmitting method, a receiving method, a transmitter, and a receiver of a communication system. A transmitting method according to an aspect of the present invention includes generating a burst by scattering a plurality of pilot symbols, and transmitting the burst.
摘要翻译：本发明涉及通信系统的发送方法，接收方法，发送机和接收机。根据本发明的一个方面的发送方法包括通过散射多个导频符号来生成突发，并发送突发。

8. 发明申请

US20110142005A1 METHOD AND SYSTEM FOR FAST LAYER 3 HAND-OVER 失效
标题翻译：快速层3手的方法和系统
公开(公告)号：US20110142005A1
公开(公告)日：2011-06-16
申请号：US12845953
申请日：2010-07-29
申请人： Hyun Ha HONG , Dae Ig Chang , Ho Jin Lee , Nam Young Kim
发明人： Hyun Ha HONG , Dae Ig Chang , Ho Jin Lee , Nam Young Kim
IPC分类号： H04W36/00
CPC分类号： H04W36/0011 , H04W36/14 , H04W36/32 , H04W80/04
摘要： The present invention relates to a method of seamlessly providing a satellite multimedia Internet service to a fixed subscriber belonging to a lower user network even in a satellite shadow environment and shortening a hand-over processing time between heterogeneous networks by applying a fast layer 3 hand-over technology between satellite and wireless networks in a mobile satellite terminal device.
摘要翻译：本发明涉及一种即使在卫星影像环境中也能固定地提供属于较低用户网络的固定用户的卫星多媒体互联网服务的方法，并且通过应用快速3层手机来缩短异构网络之间的切换处理时间，在移动卫星终端设备中的卫星和无线网络之间的技术。

9. 发明申请

US20110113302A1 TERMINAL TRANSMISSION APPARATUS FOR PROVIDING MULTIMEDIA SERVICE VIA SATELLITE COMMUNICATION LINK AND METHOD FOR PROVIDING MULTIMEDIA SERVICE USING THE SAME 有权
标题翻译：用于通过卫星通信链路提供多媒体服务的终端传输装置和使用其提供多媒体服务的方法
公开(公告)号：US20110113302A1
公开(公告)日：2011-05-12
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： H03M13/29 , G06F11/10
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。

10. 发明授权

US08707126B2 Source-channel combined coding method and satellite broadcasting system using the same 失效
标题翻译：源通道组合编码方法和卫星广播系统使用相同
公开(公告)号：US08707126B2
公开(公告)日：2014-04-22
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： H03M13/00
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。

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