公开(公告)号：US20220330095A1

公开(公告)日：2022-10-13

申请号：US17718938

申请日：2022-04-12

Applicant: Electronics and Telecommunications Research Institute

Inventor： SOON CHOUL KIM ,  Sung Ik PARK ,  Jae-young LEE ,  Hyun-Jeong YIM ,  Namho HUR ,  Dong Joon CHOI

IPC: H04W28/08 ,  H04N21/61 ,  H04N21/438

Abstract: Disclosed are an apparatus and method for providing an offloading service. A method of providing an offloading service according to an example embodiment includes streaming, to a user terminal including a cellular network receiver and a broadcast network receiver, media content data through a cellular network, transmitting, to the user terminal, an offloading service providing signal for activating the broadcast network receiver of the user terminal through the cellular network, transmitting, to the user terminal, a broadcast signal including connection information of a broadcast network to which the user terminal is to be connected so as to receive the media content data, through the cellular network, and broadcasting the media content data through the broadcast network.

公开(公告)号：US20170324541A1

公开(公告)日：2017-11-09

申请号：US15441799

申请日：2017-02-24

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jae Hwui BAE ,  Sang Jung RA ,  Jin Hyuk SONG ,  Dong Joon CHOI ,  Nam Ho HUR

IPC: H04L7/06 ,  H04L1/00 ,  H04L5/00 ,  H04L29/08

CPC classification number: H04L7/06 ,  H04L1/0071 ,  H04L5/005 ,  H04L5/0053 ,  H04L27/2613 ,  H04L27/2657 ,  H04L27/2663 ,  H04L27/2671 ,  H04L27/2675 ,  H04L27/389 ,  H04L69/323

Abstract: Disclosed are a method for acquiring synchronization in a cable network, and a physical (PHY) transmitter and PHY receiver. The method for acquiring synchronization in a cable network according to an embodiment includes receiving, by a PHY receiver, a signal from a PHY transmitter, and acquiring, by the PHY receiver, channel synchronization when a symbol in which a channel preamble exists is detected from the received signal and a position of a frequency in which a channel subcarrier exists is detected from the detected symbol by performing a cross correlation operation on the received signal and the channel preamble.

公开(公告)号：US20170180049A1

公开(公告)日：2017-06-22

申请号：US15275280

申请日：2016-09-23

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Tae Kyoon KIM ,  Joon Young JUNG ,  Dong Joon CHOI ,  Yong Seong CHO ,  Nam Ho HUR

IPC: H04B10/2575 ,  H04N21/236 ,  H04N21/458 ,  H04N21/434 ,  H04N21/61 ,  H04N21/438

CPC classification number: H04B10/25751 ,  H04N21/236 ,  H04N21/23614 ,  H04N21/434 ,  H04N21/4383 ,  H04N21/44222 ,  H04N21/458 ,  H04N21/6118 ,  H04N21/6168 ,  H04N21/6582

Abstract: Provided are an apparatus and method for broadcasting-communications convergence in a hybrid fiber coax (HFC) network. The apparatus includes an optical connector configured to receive broadcast data and communication data from a cable broadcasting station through an optical cable, a channel switch configured to receive the broadcast data from the optical connector and select a piece of broadcast data to be transmitted to a subscriber from among pieces of the broadcast data, and a convergence processor configured to receive the communication data from the optical io connector, receive the selected piece of broadcast data from the channel switch, generate broadcasting-communications convergence data by multiplexing the received communication data and the selected piece of broadcast data, and transmit the broadcasting-communications convergence data.

公开(公告)号：US20150156045A1

公开(公告)日：2015-06-04

申请号：US14308997

申请日：2014-06-19

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jae-Ho LEE ,  Sang-Jung RA ,  Dong Joon CHOI ,  Namho HUR

IPC: H04L27/26

CPC classification number: H04L27/2613 ,  H04L27/2607 ,  H04L27/2627 ,  H04L27/2646

Abstract: In an orthogonal frequency division multiplexing (OFDM) wireless communication system, when path delay information is received from a reception apparatus through a return path after data transmission, a length of a cyclic prefix included in a transmitted signal is adjusted on the basis of a delay value included in the path delay information.

Abstract translation: 在正交频分复用（OFDM）无线通信系统中，当在数据发送之后通过返回路径从接收装置接收到路径延迟信息时，根据延迟来调整包含在发送信号中的循环前缀的长度 值包含在路径延迟信息中。

公开(公告)号：US20230144522A1

公开(公告)日：2023-05-11

申请号：US17940848

申请日：2022-09-08

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Joon Young JUNG ,  Je Won LEE ,  Dong Joon CHOI

IPC: H04N21/4385 ,  H04N21/43

CPC classification number: H04N21/4385 ,  H04N21/4307

Abstract: According to an embodiment of the present disclosure, there is provided a method and apparatus for transmitting/receiving a digital broadcast. The method for transmitting a digital broadcast, the method comprising: configuring AV data; configuring broadcast data; configuring application signaling information (ASI) by considering at least one of the AV data and the broadcast data or combination thereof; configuring an MPEG-based transport stream by multiplexing the AV data, the broadcast data and the ASI; and transmitting the MPEG-based transport stream, wherein the ASI includes data for driving an application executed by a broadcast receiver.

公开(公告)号：US20220312468A1

公开(公告)日：2022-09-29

申请号：US17697738

申请日：2022-03-17

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hoi Yoon JUNG ,  Sung Ik PARK ,  Nam Ho HUR ,  Heung Mook KIM ,  Dong Joon CHOI

IPC: H04W72/12 ,  H04W74/02

Abstract: An operation method of a terminal in a communication system may comprise: receiving downlink control information (DCI) for scheduling uplink transmission from a base station; identifying a communication node initiating a channel occupancy time associated with the uplink transmission based on a channel access parameter included in the DCI; and performing the uplink transmission scheduled by the DCI within the channel occupancy time initiated by the communication node, wherein the communication node is the terminal or the base station.

公开(公告)号：US20160164664A1

公开(公告)日：2016-06-09

申请号：US14959189

申请日：2015-12-04

Applicant: Electronics and Telecommunications Research Institute

Inventor： Joon Young JUNG ,  Jae Ho LEE ,  Dong Joon CHOI ,  Nam Ho HUR

IPC: H04L7/00

CPC classification number: H04J3/0655 ,  H04B10/25751 ,  H04J14/02

Abstract: An apparatus and a method for converting an upstream radio frequency (RF) signal to a digital signal and transmitting the digital signal via an Internet protocol (IP) packet based on an optical network in a cable broadcasting network is provided. The apparatus for transmitting an upstream RF signal includes a detector configured to detect an upstream RF signal, and a transmitter configured to digitize the detected upstream RF signal and transmit the digitized RF signal to a headend via an IP packet.

Abstract translation: 提供了一种用于将上行射频（RF）信号转换为数字信号并且经由基于有线广播网络中的光网络的因特网协议（IP）分组来发送数字信号的装置和方法。 用于发送上行RF信号的装置包括被配置为检测上行RF信号的检测器和被配置为数字化所检测到的上行RF信号并经由IP分组将数字化的RF信号发送到头端的发送器。

公开(公告)号：US20150139339A1

公开(公告)日：2015-05-21

申请号：US14308779

申请日：2014-06-19

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sang-Jung RA ,  Joon Young JUNG ,  Jae-Ho LEE ,  Dong Joon CHOI ,  Namho HUR

IPC: H04N19/85 ,  H04N19/89

CPC classification number: H04N21/2368

Abstract: A broadcasting transmitting apparatus splits a piece of broadcast content into an audio signal and a video signal, encodes the audio signal to generate an audio bit string, encodes the video signal to generate a video bit string, multiplexes the audio bit string and the video bit string, and modulates the multiplexed bit strings into a symbol. The encoded audio bit string is allocated to some bits of the symbol, and the encoded audio bit string is allocated to the remaining bits of the symbol.

Abstract translation: 广播发送装置将广播内容分割为音频信号和视频信号，对音频信号进行编码，生成音频比特串，对视频信号进行编码，生成视频比特串，复用音频比特串和视频比特 字符串，并将多路复用位串调制成符号。 将经编码的音频比特串分配给符号的某些比特，并将经编码的音频比特串分配给符号的其余比特。

公开(公告)号：US20140269608A1

公开(公告)日：2014-09-18

申请号：US14096732

申请日：2013-12-04

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Joon Young JUNG ,  Dong Joon CHOI ,  Nam Ho HUR

IPC: H04L5/00

CPC classification number: H04L5/001 ,  H04L5/0098 ,  H04L27/2613

Abstract: Disclosed are an OFDM transmission method and apparatus. In the present invention, channel bonding information includes at least one of information indicating whether or not a channel through which the transport frame is transmitted is a bonded channel, information indicating how many channels form the bonded channel, and information about a transmission frequency of each of the bonded channels.

Abstract translation: 公开了OFDM传输方法和装置。 在本发明中，信道绑定信息包括指示发送传输帧的信道是否为绑定信道的信息，表示有多少信道形成绑定信道的信息，以及关于每个信道的传输频率的信息中的至少一个 的保税渠道。

公开(公告)号：US20140215530A1

公开(公告)日：2014-07-31

申请号：US13957134

申请日：2013-08-01

Applicant: Electronics and Telecommunications Research Institute

Inventor： Ho Sook LEE ,  Dong Joon CHOI ,  Nam Ho HUR

IPC: H04N21/61

CPC classification number: H04N21/6131 ,  H04L12/2801 ,  H04N21/238 ,  H04N21/239 ,  H04N21/6106 ,  H04N21/6125

Abstract: A method for transmitting broadcast and data streams in an HFC-based cable network includes a first transmission step of a broadcast transmission apparatus sending broadcast and data service streams in an IP-based stream or RF signal form through an optical section up to a cell node that is a contact point between the optical section and a cable section of a cable network and a second transmission step of the cell node converting the broadcast and data service streams into one of RF signal, IP-based stream, and RF/IP convergence service stream forms depending on a service type of a subscriber terminal and sending the converted broadcast and data service streams to the subscriber terminal through the cable section.

Abstract translation: 一种用于在基于HFC的有线网络中发送广播和数据流的方法包括：广播传输设备的第一传输步骤，其以基于IP的流或RF信号形式通过光学部分发送广播和数据业务流，直到单元节点 即光纤部分和电缆网络的电缆部分之间的接触点，并且小区节点的第二传输步骤将广播和数据业务流转换成RF信号，基于IP的流和RF / IP收敛服务之一 流形式取决于用户终端的服务类型，并通过电缆部分将转换的广播和数据业务流发送给用户终端。