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。

公开(公告)号：US20140133597A1

公开(公告)日：2014-05-15

申请号：US13779933

申请日：2013-02-28

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Young Kwon HAHM ,  Dong Joon CHOI ,  Nam Ho HUR

IPC: H04L27/26

CPC classification number: H04L27/2602 ,  H04L27/2613 ,  H04L27/2647 ,  H04L27/3455

Abstract: Disclosed are a method for transmitting and receiving data and an apparatus thereof, and more particularly, a method for transmitting and receiving data and an apparatus thereof in an orthogonal frequency division multiplexing (OFDM) system. The method for transmitting data in an OFDM system according to the present invention includes encoding and modulating data to be transmitted, configuring the modulated data by a frame constituted by N (an integer larger than 0) OFDM symbols, and transmitting the configured frame, in which the frame includes a first OFDM symbol including a pilot symbol and a second OFDM symbol including lower-order modulated than the modulated data.

Abstract translation: 公开了一种用于发送和接收数据的方法及其装置，更具体地说，涉及一种用于在正交频分复用（OFDM）系统中发送和接收数据的方法及其装置。 在根据本发明的OFDM系统中发送数据的方法包括编码和调制要发送的数据，通过由N（大于0的整数）OFDM符号构成的帧来配置调制数据，并将配置的帧发送到 该帧包括包括导频符号的第一OFDM符号和包括比调制数据调制的低阶的第二OFDM符号。