公开(公告)号：US20130195148A1

公开(公告)日：2013-08-01

申请号：US13754436

申请日：2013-01-30

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Pan Soo KIM ,  Deock Gil OH

IPC: H04B1/7097

CPC classification number: H04B1/7097 ,  H04L1/0079 ,  H04L1/08 ,  H04N21/2383 ,  H04N21/4382

Abstract: Provided are a modulation method and a demodulation method for satellite communication using a widespread signal-to-noise ratio (SNR), the method including: adding a dummy frame to a broadcasting/communication signal frame for signal transmission of a digital video broadcasting-satellite second generation (DVB-S2) modulator; verifying a spreading factor; adding the same physical layer header to the broadcasting/communication signal frame to which the dummy frame is added, repeatedly the number of times corresponding to the verified spreading factor; and repeating the same data, for example, PL frame data as the physical layer header.

Abstract translation: 提供了一种使用广泛的信噪比（SNR）的卫星通信的调制方法和解调方法，该方法包括：将伪帧添加到广播/通信信号帧中，用于信号传输数字视频广播卫星 第二代（DVB-S2）调制器; 验证扩展因子; 将相同的物理层报头添加到添加了伪帧的广播/通信信号帧中，重复与验证的扩展因子相对应的次数; 并且重复相同的数据，例如作为物理层报头的PL帧数据。

公开(公告)号：US20200052778A1

公开(公告)日：2020-02-13

申请号：US16181149

申请日：2018-11-05

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jonggyu OH ,  Pansoo KIM ,  Deock Gil OH ,  Joon Gyu RYU ,  Soo Yeob JUNG

IPC: H04B7/185 ,  H04B7/155 ,  H04W72/04

Abstract: Disclosed is a communication method performed between a satellite and a ground station and apparatuses performing the communication method. The communication method includes transmitting a plurality of frames based on a beam allocation time schedule (BATS) between a satellite and a ground station, and synchronizing the BATS based on a reception time and a detection time of one or more frames among the plurality of frames to be received through a beam open window (BOW) allocated to the ground station.

公开(公告)号：US20180241460A1

公开(公告)日：2018-08-23

申请号：US15726006

申请日：2017-10-05

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyun Ha HONG ,  Mankyu PARK ,  Deock Gil OH ,  Joon Gyu RYU ,  Dae Ig CHANG

IPC: H04B7/185 ,  H04H20/74 ,  H04H40/90 ,  H04H60/90 ,  H04N7/20

CPC classification number: H04B7/185 ,  H04H20/42 ,  H04H20/74 ,  H04H40/90 ,  H04H60/80 ,  H04H60/90 ,  H04H2201/33 ,  H04L27/0008 ,  H04N7/20

Abstract: Disclosed is a star network/mesh network accessing method and apparatus of a terminal in a satellite communication system, the method including receiving time slot resources from a central station and operating in a time division multiple access (TDMA) start network communication mode between the central station and a terminal, transferring, to the central station, a TDMA mesh network connection request message for a destination terminal, receiving traffic burst time plan (TBTP) information corresponding to the TDMA mesh network connection request message from the central station and operating in a TDMA mesh network communication mode between terminals, and switching from the TDMA mesh network communication mode between the terminals to a single channel per carrier (SCPC) mesh network communication mode between the terminals when Voice over Internet Protocol (VoIP) traffic is greater than a threshold.

公开(公告)号：US20140229997A1

公开(公告)日：2014-08-14

申请号：US14175496

申请日：2014-02-07

Applicant: Electronics and Telecommunications Research Institute

Inventor： Pan Soo KIM ,  Deock Gil OH

IPC: H04N21/61 ,  H04N21/4408 ,  H04B1/69

CPC classification number: H04N21/6193 ,  H04B1/69 ,  H04L1/0003 ,  H04L1/0065 ,  H04N21/2383 ,  H04N21/4408

Abstract: Provided is a technology applicable to a broad signal to noise ratio (SNR) environment for a satellite communication and broadcasting service, including a mapper to modulate a forward error correction frame based on a predetermined constellation, a physical layer header processor to add a physical layer header to the modulated forward error correction frame, a physical layer frame spreader to spread a physical layer frame of the modulated forward error correction frame, and a physical layer scrambler to scramble the added physical layer header and the spread physical layer frame.

Abstract translation: 提供了适用于卫星通信和广播业务的宽信噪比（SNR）环境的技术，包括基于预定星座来调制前向纠错帧的映射器，物理层报头处理器，以添加物理层 标题到调制的前向纠错帧，物理层帧扩展器，用于扩展调制的前向纠错帧的物理层帧，以及物理层扰频器，以加扰附加的物理层报头和扩展的物理层帧。

公开(公告)号：US20140226752A1

公开(公告)日：2014-08-14

申请号：US14175412

申请日：2014-02-07

Applicant: Electronics and Telecommunications Research Institute

Inventor： Pan Soo KIM ,  Deock Gil OH

IPC: H04L1/00 ,  H04B1/62

CPC classification number: H04L1/0042 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0065 ,  H04L27/368

Abstract: Provided is a satellite broadcasting and communication transmitting apparatus and method for a broadband satellite broadcasting and communication service, including a forward error correction (FEC) encoder to generate an FEC frame, a bit mapping framer to perform bit mapping on the generated FEC frame, and a predistorter to predistort the bit mapped frame.

Abstract translation: 提供了一种用于宽带卫星广播和通信服务的卫星广播和通信发送装置和方法，包括用于生成FEC帧的前向纠错（FEC）编码器，在所生成的FEC帧上执行比特映射的比特映射成帧器，以及 一个预失真器来预取位映射帧。

公开(公告)号：US20140150035A1

公开(公告)日：2014-05-29

申请号：US13909439

申请日：2013-06-04

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Joon Gyu RYU ,  Jun Gil JEON ,  Min Su SHIN ,  Deock Gil OH

IPC: H04N21/44 ,  H04N21/438 ,  H04N21/442

CPC classification number: H04N21/44209 ,  H04H20/42 ,  H04H40/90 ,  H04N7/20 ,  H04N21/4382 ,  H04N21/6143

Abstract: Provided is an apparatus and a method for receiving a satellite broadcast. The method may include estimating a channel using signal-to-noise ratio (SNR) information being received, determining a video signal to be received among at least two video signals based on the estimated channel, and controlling selective reception of the determined video signal.

Abstract translation: 提供了一种用于接收卫星广播的装置和方法。 该方法可以包括使用正在接收的信噪比（SNR）信息估计信道，基于所估计的信道确定要在至少两个视频信号中接收的视频信号，以及控制所确定的视频信号的选择性接收。

公开(公告)号：US20140082674A1

公开(公告)日：2014-03-20

申请号：US13803464

申请日：2013-03-14

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Min Su SHIN ,  Joon Gyu RYU ,  Jang Hee KANG ,  Deock Gil OH

IPC: H04N21/61

CPC classification number: H04N21/6193 ,  H04L1/0041 ,  H04N21/2383

Abstract: Provided is a data processing apparatus and method that may initialize baseband frame data that is newly input, and may randomize the baseband frame data based on a byte unit. Also, provided is a data processing system and method that may configure baseband frame data by randomizing the baseband frame data based on the byte unit in performing mode adaptation and stream adaptation with respect to a received transport stream (TS) packet, and may perform channel encoding of the baseband frame data.

Abstract translation: 提供一种数据处理装置和方法，其可以初始化新输入的基带帧数据，并且可以基于字节单元使基带帧数据随机化。 此外，提供了一种数据处理系统和方法，其可以通过在执行模式适配和相对于接收的传输流（TS）分组的流适配）中基于字节单元随机化基带帧数据来配置基带帧数据，并且可以执行信道 基带帧数据的编码。

公开(公告)号：US20130194952A1

公开(公告)日：2013-08-01

申请号：US13752498

申请日：2013-01-29

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Man Kyu PARK ,  Deock Gil OH

IPC: H04L12/26

CPC classification number: H04L43/00 ,  H04L43/0835 ,  H04W28/0242

Abstract: Provided is a method of identifying a transmission control protocol (TCP) packet loss, including transmitting at least one TCP data packet to a TCP receiver, estimating wireless channel status information using the TCP receiver by interaction between a TCP layer and a physical layer, and receiving an acknowledgement (ACK) packet including the estimated wireless channel status information from the TCP receiver.

Abstract translation: 提供了一种识别传输控制协议（TCP）分组丢失的方法，包括：向TCP接收机发送至少一个TCP数据分组，使用TCP接收机通过TCP层与物理层之间的交互来估计无线信道状态信息;以及 从TCP接收机接收包括估计的无线信道状态信息的确认（ACK）分组。