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：US20180278453A1

公开(公告)日：2018-09-27

申请号：US15711332

申请日：2017-09-21

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jong Keun LEE ,  Dae Ig CHANG ,  Deock Gil OH

IPC: H04L27/26 ,  H04L27/34 ,  H04L25/02

CPC classification number: H04L27/2621 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/0232 ,  H04L27/2605 ,  H04L27/2615 ,  H04L27/2626 ,  H04L27/2666 ,  H04L27/2675 ,  H04L27/3411

Abstract: Disclosed is a communication method and apparatus without side information (SI) using a cross-correlation. The communication method may include obtaining a reception pilot signal from a reception signal, and detecting a phase sequence used for a transmission signal based on the reception pilot signal.

公开(公告)号：US20160242189A1

公开(公告)日：2016-08-18

申请号：US15043030

申请日：2016-02-12

Applicant: Electronics and Telecommunications Research Institute

Inventor： Dae Sub OH ,  Un Hee PARK ,  Dae Ig CHANG

IPC: H04W72/08 ,  H04W72/04 ,  H04B7/14

CPC classification number: H04B7/14 ,  H04B7/18513

Abstract: A communication apparatus of an earth station to avoid frequency interference with a terrestrial communication system is provided. The communication apparatus may include a signal extractor configured to acquire a signal of a terrestrial radio station by cancelling a signal transmitted by the earth station from received signals, a detector configured to detect an interference state between a satellite communication network and a terrestrial communication network by comparing a signal strength of the signal of the terrestrial radio station to a predetermined interference signal threshold, and a frequency allocator configured to allocate a new frequency slot to be used by the earth station to transmit a signal, when the detector detects the interference state.

Abstract translation: 提供了一种用于避免与地面通信系统的频率干扰的地球站的通信装置。 通信装置可以包括：信号提取器，被配置为通过从接收的信号中消除由地球站发送的信号来获取地面无线电站的信号;检测器，被配置为通过以下步骤检测卫星通信网络和地面通信网络之间的干扰状态： 将所述地面无线电台站的信号的信号强度与预定的干扰信号阈值进行比较;以及频率分配器，被配置为当所述检测器检测到所述干扰状态时，分配用于由所述地球站发送信号的新的时​​隙。