公开(公告)号：US20170149542A1

公开(公告)日：2017-05-25

申请号：US15360442

申请日：2016-11-23

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Yu Ro LEE ,  Kwang Jae LIM ,  Sung Cheol CHANG

IPC: H04L5/00 ,  H04B1/713

CPC classification number: H04L5/0044 ,  H04B1/713 ,  H04L5/0012 ,  H04L5/0048 ,  H04L5/0051 ,  H04W72/0413 ,  H04W72/1268

Abstract: Disclosed herein are a method and an apparatus for transmitting an uplink signal. The method for transmitting an uplink signal includes: transmitting an uplink data in at least one symbol included in a short transmit time interval (sTTI) including 7 symbols or less; and transmitting a demodulation reference signal (DMRS) for the uplink data through an even-numbered subcarrier or an odd-numbered subcarrier in one symbol in which the uplink data is not transmitted, among the symbols included in the sTTI.

公开(公告)号：US20170135001A1

公开(公告)日：2017-05-11

申请号：US15343942

申请日：2016-11-04

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Won-Ik KIM ,  Seokki KIM ,  Taegyun NOH ,  Yu Ro LEE ,  Kwang Jae LIM ,  Sung Cheol CHANG ,  Soojung JUNG ,  Seungkwon CHO

IPC: H04W36/00 ,  H04L5/00 ,  H04W74/08

CPC classification number: H04W36/0077 ,  H04L5/0055 ,  H04L69/324 ,  H04W74/006 ,  H04W74/0833

Abstract: A terminal executes a random access procedure with a target base station depending on a pre-random access channel (pre-RACH) command in a handover preparation step executed between a source base station currently accessed by the terminal and the target base station when the terminal receives the pre-RACH command from the source base station through layer2 (L2) signaling in the handover preparation step.

公开(公告)号：US20160360518A1

公开(公告)日：2016-12-08

申请号：US15173074

申请日：2016-06-03

Applicant: Electronics and Telecommunications Research Institute

Inventor： Taegyun NOH ,  Kwang Jae LIM ,  Chul Sik YOON ,  Yu Ro LEE ,  Sung Cheol CHANG

IPC: H04W72/04 ,  H04L27/26 ,  H04L5/00

CPC classification number: H04L27/2607 ,  H04L5/0051 ,  H04L5/0053 ,  H04L5/0055

Abstract: A method and an apparatus for transmitting the physical uplink control channel including an uplink control channel expressed by product of a uplink control information and a sequence and demodulation reference signal expressed by a sequence having different cyclic shift values through a short resource block are provided.

Abstract translation: 提供了一种用于发送包括由上行链路控制信息的乘积表示的上行链路控制信道和通过短资源块由具有不同的循环移位值的序列表示的序列和解调参考信号的物理上行链路控制信道的方法和装置。

公开(公告)号：US20160234800A1

公开(公告)日：2016-08-11

申请号：US15041651

申请日：2016-02-11

Applicant: Electronics and Telecommunications Research Institute

Inventor： Soojung JUNG ,  Anseok LEE ,  Seungkwon CHO ,  Sung Cheol CHANG

IPC: H04W56/00 ,  H04W72/04 ,  H04L1/18

CPC classification number: H04W56/003 ,  H04L1/1812

Abstract: Provided are a method and an apparatus for performing a synchronous hybrid automatic repeat reQuest (HARQ). When a variable transmission time allocation is allocated per HARQ process, resource allocation information including a duration field corresponding to a length of a transmission time interval (TTI) allocated to each of the HARQ processes is transmitted. After the resource allocation information is transmitted, it is determined whether an HARQ error occurs at a predetermined timing and if it is determined whether the HARQ error occurs, the HARQ error is handled.

Abstract translation: 提供了一种用于执行同步混合自动重传请求（HARQ）的方法和装置。 当每个HARQ过程分配可变传输时间分配时，发送包括与分配给每个HARQ进程的传输时间间隔（TTI）的长度对应的持续时间字段的资源分配信息。 在发送资源分配信息之后，确定在预定定时是否发生HARQ错误，并且如果确定是否发生HARQ错误，则处理HARQ错误。

公开(公告)号：US20160227425A1

公开(公告)日：2016-08-04

申请号：US15010855

申请日：2016-01-29

Applicant: Electronics and Telecommunications Research Institute

Inventor： Eunkyung KIM ,  Seung-Kwon BAEK ,  Chanho YOON ,  Jae Sun CHA ,  Sung Cheol CHANG ,  Young Jo KO

IPC: H04W24/08 ,  H04W72/04 ,  H04L1/18 ,  H04L5/00

CPC classification number: H04L5/0007 ,  H04L1/1812 ,  H04L1/1819 ,  H04L5/001 ,  H04L5/0044 ,  H04L5/0055 ,  H04L5/0073 ,  H04W74/0808

Abstract: A method and an apparatus for transmitting a resource, and a method for the HARQ retransmission using an unlicensed band include an operation of performing clear channel assessment (CCA) for the unlicensed band; and an operation of occupying a channel of the unlicensed band according to the CCA and determining whether or not the resource is transmitted based on a position of a transmission time interval (TTI) within a channel occupancy time (COT) for the channel.

Abstract translation: 一种用于发送资源的方法和装置，以及使用非许可频带进行HARQ重传的方法，包括为非许可频带执行清除信道评估（CCA）的操作; 以及根据CCA占用非许可频带的信道的操作，并且基于在该信道的信道占用时间（COT）内的传输时间间隔（TTI）的位置来确定是否发送资源。

公开(公告)号：US20160143064A1

公开(公告)日：2016-05-19

申请号：US14940855

申请日：2015-11-13

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Seungkwon CHO ,  Anseok LEE ,  Soojung JUNG ,  Sung Cheol CHANG

IPC: H04W74/08 ,  H04W72/04 ,  H04W74/04 ,  H04W74/00 ,  H04W76/02

CPC classification number: H04W74/0858 ,  H04W74/004 ,  H04W76/18

Abstract: Disclosed is a method and apparatus for random access in a wireless communication system. In a communication environment in which a first terminal and a second terminal coexist, a base station receives a random access identification signal from one among a first terminal and a second terminal. The base station transmits a busy signal in response to the random access identification signal. After that, the base station receives data from the terminal having transmitted the random access identification signal.

Abstract translation: 公开了一种在无线通信系统中随机接入的方法和装置。 在第一终端和第二终端共存的通信环境中，基站从第一终端和第二终端中的一个接收随机接入识别信号。 基站响应于随机接入识别信号发送忙信号。 之后，基站从发送了随机接入识别信号的终端接收数据。

公开(公告)号：US20160135182A1

公开(公告)日：2016-05-12

申请号：US14938822

申请日：2015-11-11

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Soojung JUNG ,  Anseok LEE ,  Seungkwon CHO ,  Sung Cheol CHANG

IPC: H04W72/04

CPC classification number: H04L5/0064 ,  H04L5/0007 ,  H04L5/0044

Abstract: Disclosed herein is a base station of a mobile communication system configuring at least one low latency transmission time interval (TTI) within a length of at least one transmission symbol in a subframe including a plurality of transmission symbols and transmitting LL (low latency) TTI related information using a physical control format indicator channel (PCFICH) transmitted at a pre-defined transmission symbol position within the subframe.

Abstract translation: 本文公开了一种移动通信系统的基站，其配置在包括多个传输符号的子帧中的至少一个传输符号的长度内的至少一个低延迟传输时间间隔（TTI），并且发送LL（低等待时间）TTI相关 使用在子帧内以预定义的传输符号位置发送的物理控制格式指示符信道（PCFICH）的信息。

公开(公告)号：US20160128039A1

公开(公告)日：2016-05-05

申请号：US14676455

申请日：2015-04-01

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kwang Jae LIM ,  Sung Cheol CHANG

IPC: H04W72/04 ,  H04L1/18

CPC classification number: H04L1/1812 ,  H04L1/0007 ,  H04L1/1887 ,  H04L1/1893 ,  H04L1/1896 ,  H04L5/0053 ,  H04L5/0055

Abstract: A transmitting apparatus in a mobile communication system determines a size of a Transmission Time Interval (TTI) that allocates a transmitting symbol in a minimum unit according to a quantity of data to transmit to each receiving apparatus and a latency time, allocates a control channel and a data channel in a frequency domain of a subframe including a plurality of transmitting symbols, and transmits respective control information and data to corresponding receiving apparatuses through the control channel and the data channel at the determined TTI in a radio frame including a plurality of subframes.

Abstract translation: 移动通信系统中的发送装置根据向每个接收装置发送的数据量，确定以最小单位分配发送符号的发送时间间隔（TTI）的大小和等待时间，分配控制信道， 在包括多个发送符号的子帧的频域中的数据信道，并且在包括多个子帧的无线电帧中，通过控制信道和数据信道，通过所确定的TTI将相应的控制信息和数据发送到相应的接收装置。

公开(公告)号：US20150181611A1

公开(公告)日：2015-06-25

申请号：US14581430

申请日：2014-12-23

Applicant: Industry-Academic Cooperation Foundation Gyeongsang National University ,  Electronics and Telecommunications Research Institute

Inventor： Bang Chul JUNG ,  Won Yong SHIN ,  Hyun Jong YANG ,  Jae Joon PARK ,  Kwang Jae LIM ,  Jae Sun CHA ,  Eun Kyung KIM ,  Hyun LEE ,  Sung Cheol CHANG

IPC: H04W72/08

CPC classification number: H04B7/086 ,  H04B7/0413 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0632 ,  H04W28/04

Abstract: A communication system configured to send data using an interference alignment scheme is disclosed herein. The disclosed communication system includes an MS and a BS. The disclosed BS sends data using a transmission beamforming matrix that minimizes intra-cell interference. The disclosed MS receives the data using a reception beamforming matrix that minimizes inter-cell interference. The BS sends information about a reference beamforming matrix to the MS, and sends a pilot signal to the MS using the reference beamforming matrix. The MS estimates an effective channel using the reference beamforming matrix, and calculates the intensity of an interference signal from an interference BS.

Abstract translation: 本文公开了配置为使用干扰对准方案发送数据的通信系统。 所公开的通信系统包括MS和BS。 公开的BS使用最小化小区内干扰的发送波束成形矩阵来发送数据。 所公开的MS使用最小化小区间干扰的接收波束形成矩阵来接收数据。 BS向MS发送关于参考波束成形矩阵的信息，并使用参考波束形成矩阵向MS发送导频信号。 MS使用参考波束成形矩阵估计有效信道，并且计算来自干扰BS的干扰信号的强度。

公开(公告)号：US20150103783A1

公开(公告)日：2015-04-16

申请号：US14514122

申请日：2014-10-14

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hyung Jin KIM ,  Seokki KIM ,  Sung Cheol CHANG ,  Hyunsu KIM ,  Jimin BAE ,  Jihoon CHOI

IPC: H04W74/08 ,  H04L5/00

CPC classification number: H04W74/0816 ,  H04L5/0044 ,  H04L5/0053

Abstract: A communication method in a peer aware communication system and an apparatus for transmitting/receiving using the communication method are provided. A block signal for informing of channel occupation is generated and then is transmitted through an interval in which a message signal including a preamble signal is not transmitted. A subcarrier for the block signal is different from a subcarrier for the preamble signal.

Abstract translation: 提供了一种对等感知通信系统中的通信方法和使用该通信方法发送/接收的装置。 产生用于通知信道占用的块信号，然后通过不发送包括前导信号的消息信号的间隔来发送。 用于块信号的子载波与用于前导码信号的子载波不同。