公开(公告)号：US20140003416A1

公开(公告)日：2014-01-02

申请号：US13841232

申请日：2013-03-15

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jun-Woo Kim ,  Hyeong Sook Park ,  Hoon Lee ,  Seungjae Bahng ,  Youn Ok Park

IPC: H04W56/00

CPC classification number: H04W56/001 ,  H04W48/20 ,  H04W56/00 ,  H04W56/005

Abstract: There is provided a method for acquiring and modifying uplink and downlink synchronization, by which, if there is a possibility of ISI occurring due to incorrect downlink synchronization of a terminal with a base station, the terminal receives a ranging response from the base station, modifies incorrect downlink synchronization, and acquires uplink synchronization in accordance with modified downlink synchronization. The method for acquiring and modifying uplink and downlink synchronization efficiently prevents, in a cooperative communication network, discrepancy in signal transmission synchronization between the base stations, excessive attenuation of a transmitted signal, or a delay caused by a difference in reflection paths.

Abstract translation: 提供了一种用于获取和修改上行链路和下行链路同步的方法，通过该方法，如果由于具有基站的终端的下行链路同步不正确而发生ISI的可能性，则终端从基站接收测距响应，修改 不正确的下行链路同步，并根据修改的下行链路同步获取上行链路同步。 用于获取和修改上行链路和下行链路同步的方法在协作通信网络中有效地防止了基站之间的信号传输同步的差异，发射信号的过度衰减或由反射路径的差异引起的延迟。

公开(公告)号：US09100956B2

公开(公告)日：2015-08-04

申请号：US14011031

申请日：2013-08-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Young-Jin Moon ,  Jun-Woo Kim ,  Youn-Ok Park

IPC: H04W72/00 ,  H04W72/04 ,  H04B10/2581 ,  H04W88/06

CPC classification number: H04W72/042 ,  H04B10/2581 ,  H04W88/06

Abstract: Provided are a preamble transmission device of a multi-mode supporting base station and a preamble detecting device of a multi-mode supporting user terminal. Selecting of the preamble signal is driven by the user terminal capable of supporting multi-modes, which contributes to smooth services from a user's viewpoint, and to effective use of the limited radio resources from an operator's viewpoint.

Abstract translation: 提供了多模式支持用基站的前导码发送装置和多模式支持用户终端的前同步码检测装置。 前导码信号的选择由能够支持多模式的用户终端驱动，这有助于从用户的角度来平滑的服务，并且有效地利用来自运营商的观点的有限的无线电资源。

公开(公告)号：US20140254503A1

公开(公告)日：2014-09-11

申请号：US13966353

申请日：2013-08-14

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyeong-Sook PARK ,  Jun-Woo Kim ,  Youn-Ok Park

IPC: H04W72/04

CPC classification number: H04L27/2071 ,  H04L27/2665 ,  H04L27/2688 ,  H04L27/2689

Abstract: Provided are a signal detector for an uplink control channel and a time error correction method capable of simply correcting time errors, which occur during adjustment of a starting point of an FFT of an uplink control channel signal, by use of differential demodulation and thus improving the signal detection performance of an uplink control channel.

Abstract translation: 提供了一种用于上行链路控制信道的信号检测器和时间误差校正方法，其能够通过使用差分解调来简单地校正在调整上行链路控制信道信号的FFT的起始点期间发生的时间错误，从而改善 上行链路控制信道的信号检测性能。

公开(公告)号：US09083085B2

公开(公告)日：2015-07-14

申请号：US14247687

申请日：2014-04-08

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kyung Yeol Sohn ,  Young Jo Bang ,  Jun-Woo Kim ,  Jae Kwon Kim ,  Youn Ok Park

IPC: H04B7/02 ,  H01Q21/06 ,  H04B7/10 ,  H01Q1/24 ,  H01Q21/24 ,  H01Q21/28

CPC classification number: H01Q21/06 ,  H01Q1/246 ,  H01Q21/24 ,  H01Q21/28 ,  H04B7/10

Abstract: Provided is a method for transmitting and receiving multi-input multi-output in a wireless backhaul network, including: selecting at least one pair of dual-polarized transmitting antennas to be activated among pairs of dual-polarized transmitting antennas of a transmitter; transmitting a signal through the selected pairs of dual-polarized transmitting antennas; and receiving, by pairs of dual-polarized receiving antennas of a receiver, the signal transmitted from the transmitter.

Abstract translation: 提供了一种用于在无线回程网络中发送和接收多输入多输出的方法，包括：在发射机的双极化发射天线对之间选择要激活的至少一对双极化发射天线; 通过所选择的双极化发射天线对传输信号; 并且通过接收机的双极化接收天线对接收从发射机发射的信号。

公开(公告)号：US08937938B2

公开(公告)日：2015-01-20

申请号：US13841232

申请日：2013-03-15

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jun-Woo Kim ,  Hyeong Sook Park ,  Hoon Lee ,  Seungjae Bahng ,  Youn Ok Park

IPC: H04J3/06 ,  H04W56/00 ,  H04W48/20

CPC classification number: H04W56/001 ,  H04W48/20 ,  H04W56/00 ,  H04W56/005

Abstract: There is provided a method for acquiring and modifying uplink and downlink synchronization, by which, if there is a possibility of ISI occurring due to incorrect downlink synchronization of a terminal with a base station, the terminal receives a ranging response from the base station, modifies incorrect downlink synchronization, and acquires uplink synchronization in accordance with modified downlink synchronization. The method for acquiring and modifying uplink and downlink synchronization efficiently prevents, in a cooperative communication network, discrepancy in signal transmission synchronization between the base stations, excessive attenuation of a transmitted signal, or a delay caused by a difference in reflection paths.

Abstract translation: 提供了一种用于获取和修改上行链路和下行链路同步的方法，通过该方法，如果由于具有基站的终端的下行链路同步不正确而发生ISI的可能性，则终端从基站接收测距响应，修改 不正确的下行链路同步，并根据修改的下行链路同步获取上行链路同步。 用于获取和修改上行链路和下行链路同步的方法在协作通信网络中有效地防止了基站之间的信号传输同步的差异，发射信号的过度衰减或由反射路径的差异引起的延迟。

公开(公告)号：US08744031B1

公开(公告)日：2014-06-03

申请号：US13965652

申请日：2013-08-13

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jun-Woo Kim ,  Young-Jo Bang ,  Kyung-Yeol Sohn ,  Se-Young Cho ,  Youn-Ok Park

IPC: H04L7/00

CPC classification number: H04L7/0016 ,  H04B7/10 ,  H04L27/2613 ,  H04L27/2657 ,  H04L27/2675 ,  H04L27/2688 ,  H04L27/2691 ,  H04L2027/0026

Abstract: Provided are a device and method for estimating carrier frequency offset of OFDM signals transmitted and received through a plurality of polarized antennas that may accurately estimate carrier frequency offset used for carrier frequency synchronization acquisition when there is interference between polarized waves.

Abstract translation: 提供了一种用于估计通过多个极化天线发送和接收的OFDM信号的载波频率偏移的装置和方法，当偏振波之间存在干扰时，可以精确地估计用于载波频率同步采集的载波频率偏移。