公开(公告)号：US20220029665A1

公开(公告)日：2022-01-27

申请号：US17380826

申请日：2021-07-20

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  Pukyong National University Industry-University Cooperation Foundation

Inventor： Seung Eun HONG ,  Hoon LEE ,  Seok Hwan PARK ,  Jun Beom KIM

IPC: H04B7/0426 ,  H04B7/08 ,  G06N3/08

Abstract: Disclosed is a beamforming method using a deep neural network. The deep neural network may include an input layer, L hidden layers, and an output layer, and the beamforming method may include: obtaining channel information h between a base station and K terminals and a transmit power limit value P of the base station, and inputting h and P into the input layer; and performing beamforming on signals to be transmitted to the K terminals using beamforming vectors derived using the output layer and at least one activation function, wherein the base station transmits the signals to the K terminals using M transmit antennas. Here, the output layer may be configured in a direct beamforming learning (DBL) scheme, a feature learning (FL) scheme, or a simplified feature learning (SFL) scheme.

公开(公告)号：US20180270773A1

公开(公告)日：2018-09-20

申请号：US15923728

申请日：2018-03-16

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Seok Jin LEE ,  Hoon LEE

IPC: H04W56/00 ,  H04L5/14

CPC classification number: H04W56/005 ,  G01S19/07 ,  H04L5/0091 ,  H04L5/1469 ,  H04W56/0015

Abstract: Disclosed is an operation method of a communication node in a communication network. The operation method of the communication node having divided functions of a base station in a communication network may comprise generating digital pulse signals based on a high-speed clock synthesis for a time synchronization signal used for a synchronization operation of the communication node; performing counting on the digital pulse signals based on a notification setting value obtained in advance for controlling the synchronization operation of the communication node; generating a pulse signal corresponding to the notification configured value based on a result of the counting; and performing a function of the communication node, which is divided according to supporting functions of the base station, by performing an operation indicated by the generated pulse signal.

公开(公告)号：US20180027555A1

公开(公告)日：2018-01-25

申请号：US15652488

申请日：2017-07-18

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Junhyeong KIM ,  Bing HUI ,  Il Gyu KIM ,  Jun Hwan LEE ,  Hoon LEE ,  Hee Sang CHUNG

IPC: H04W72/04 ,  H04L5/00

Abstract: A high speed moving terminal including first and second antennas each communicating with first and second radio units (RUs) of a base station distributedly installed in a mobile wireless backhaul network communicates with the first and second RUs, respectively, with different uplink-downlink configuration of the first RU and the second RU, and transmits control information of the corresponding downlink signal in an uplink subframe that comes first in the time domain after processing latency of a downlink signal received from the first RU among uplink frames with the uplink-downlink configurations of the first RU and the second RU if the downlink signal is received from the first RU through the first antenna.

公开(公告)号：US20160192236A1

公开(公告)日：2016-06-30

申请号：US14929630

申请日：2015-11-02

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kyung Yeol SOHN ,  Seung Jae BAHNG ,  Hoon LEE

IPC: H04W28/06 ,  H04W74/08

CPC classification number: H04L27/00 ,  H04J13/0062 ,  H04L27/2613 ,  H04L27/2636 ,  H04L27/2692

Abstract: Disclosed are a method and an apparatus that efficiently generate a DFT-ed preamble sequence used in uplink PRACH transmission of a wireless communication system. The method for generating a DFT-ed preamble sequence in a wireless communication system includes: calculating a first index value corresponding to the length of a DFT-ed preamble sequence by using control information; extracting a value on a unit circle corresponding to the first index value or a value on the unit circle corresponding to a second index value acquired by transforming the first index value according to a preamble format; reflecting a sign on the unit circle including the corresponding index value to the extracted value on the unit circle; and multiplying a value to which the sign is reflected by an initial sequence value according to a root index.

Abstract translation: 公开了一种有效地生成在无线通信系统的上行链路PRACH传输中使用的DFT编辑的前同步码序列的方法和装置。 用于在无线通信系统中生成DFT编辑的前同步码序列的方法包括：通过使用控制信息来计算与DFT编辑的前导序列的长度对应的第一索引值; 提取与第一索引值相对应的单位圆上的值或通过根据前导码格式变换第一索引值而获得的与第二索引值对应的单位圆上的值; 将单位圆上的符号反映为单位圆上提取的值的相应指标值; 并且根据根指数将符号反映的初始序列值乘以该值。

公开(公告)号：US20150230120A1

公开(公告)日：2015-08-13

申请号：US14615459

申请日：2015-02-06

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jung Pil CHOI ,  Jun Woo KIM ,  Hoon LEE ,  Youn Ok PARK

IPC: H04W28/02 ,  H04B1/40

CPC classification number: H04W28/0205 ,  H04B1/40 ,  H04W88/08

Abstract: The present invention relates to a base station device and a signal transmitting method thereof. The base station device according to the present invention includes a digital signal processing device configured to separate transmission data into a first data area and a second data area, to verify whether first data detected from the first data area is pre-transmitted data, to compress any one of the first data and second data detected from the second data area based on a result of the verifying, and to transmit the compressed data via an interface, and a radio signal processing device configured to combine the first data and the second data and wirelessly transmit the transmission data when the second data is received from the digital signal processing device in a state in which the first data is received via the interface connected to the digital signal processing device and stored.

Abstract translation: 本发明涉及一种基站装置及其信号发送方法。 根据本发明的基站装置包括：数字信号处理装置，被配置为将发送数据分离成第一数据区域和第二数据区域，以验证从第一数据区域检测到的第一数据是否是预先发送的数据，以压缩 基于验证结果从第二数据区检测到的第一数据和第二数据中的任何一个，以及经由接口发送压缩数据;以及无线电信号处理装置，被配置为组合第一数据和第二数据，以及 在经由连接到数字信号处理装置的接口接收第一数据并存储的状态下从数字信号处理装置接收到第二数据时，无线地发送发送数据。

公开(公告)号：US20150229396A1

公开(公告)日：2015-08-13

申请号：US14615454

申请日：2015-02-06

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hoon LEE ,  Hyeong Sook PARK ,  Kyung Yeol SOHN ,  Youn Ok PARK

IPC: H04B10/2575 ,  H04W72/04

CPC classification number: H04J14/0272 ,  H04B10/25753 ,  H04B2210/07

Abstract: The present invention relates to a signal processing apparatus and method of a basestation. The apparatus according to the present invention includes a plurality of first processing units which allocates transmission data to a predetermined frequency band and transmits a transmission signal in which control information is allocated to a guard band in the predetermined frequency band; a plurality of second processing units which extracts the control information from the guard band in the predetermined frequency band for a reception signal to perform a corresponding operation and extracts the transmission data from the predetermined frequency band to transmit the transmission data through the antenna; and an optical transmitting unit which combines a plurality of transmission signals received from the plurality of first processing units into one signal to transmit the signal to the plurality of second processing units through the optical cable.

Abstract translation: 本发明涉及基站的信号处理装置和方法。 根据本发明的装置包括：多个第一处理单元，其向预定频带分配传输数据，并将控制信息分配给预定频带中的保护频带的发送信号; 多个第二处理单元，从接收信号的规定频带的保护频带中提取控制信息，进行相应的动作，从规定的频带取出发送数据，通过天线发送发送数据; 以及光发送单元，其将从所述多个第一处理单元接收的多个发送信号组合成一个信号，以通过所述光缆将所述信号发送到所述多个第二处理单元。