公开(公告)号：US20140086082A1

公开(公告)日：2014-03-27

申请号：US14036644

申请日：2013-09-25

Applicant: Samsung Electronics Co., Ltd.

Inventor： Younsun KIM ,  Hyojin LEE ,  Youngbum KIM ,  Joonyoung CHO ,  Hyoungju JI

IPC: H04W24/10

CPC classification number: H04W24/10 ,  H04B7/024 ,  H04B17/345 ,  H04L5/0048 ,  H04L5/0062 ,  H04L5/0073 ,  H04W72/1226

Abstract: An interference measurement method and apparatus for use in a Distributed Antenna System (DAS) is provided. The method for transmitting channel state information based on interference measurement of a terminal in a Distributed Antenna System (DAS) according to the present disclosure includes receiving configuration of Interference Measurement Resource (IMR) for measuring interferences caused by plural Transmission Points (TPs), receiving control information including scheduling information on Physical Downlink Shared Channel (PDSCH), determining whether IMR-based interference measurement and PDSCH reception occur at a same subframe, and transmitting the channel state information generated according to a result of the determination. The interference measurement method and apparatus of the present disclosure is capable of measuring interference for efficient communication in the distributed antenna system.

Abstract translation: 提供了一种用于分布式天线系统（DAS）的干扰测量方法和装置。 根据本公开的基于分布式天线系统（DAS）中的终端的干扰测量来发送信道状态信息的方法包括：接收用于测量由多个传输点（TP）引起的干扰的干扰测量资源（IMR）的配置，接收 控制信息，包括物理下行链路共享信道（PDSCH）的调度信息，确定是否在同一子帧发生基于IMR的干扰测量和PDSCH接收，以及发送根据确定结果生成的信道状态信息。 本公开的干扰测量方法和装置能够测量分布式天线系统中的有效通信的干扰。

公开(公告)号：US20140079149A1

公开(公告)日：2014-03-20

申请号：US14032533

申请日：2013-09-20

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hyojin LEE ,  Younsun KIM ,  Yongjun KWAK ,  Juho LEE ,  Hyoungju JI

IPC: H04B7/06

CPC classification number: H04B7/0632 ,  H04B7/0417 ,  H04B7/0639 ,  H04B7/065 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0057

Abstract: A method and system are provided for a terminal to measure channel quality and transmit channel state information to a base station in a wireless mobile communication system operating in a multi-carrier-based multiple access scheme such as Orthogonal Frequency Division Multiple Access (OFDMA). The feedback information transmission method of a terminal in a mobile communication system includes receiving configuration information corresponding to at least two reference signals from a base station, receiving, at the terminal, feedback configuration information for measuring the at least two reference signals and generating feedback information based on a measurement result, receiving, at the terminal, the at least two reference signals, and transmitting, by the terminal, the feedback information at timings indicated in the feedback configuration information.

Abstract translation: 提供了一种方法和系统，用于终端在诸如正交频分多址（OFDMA）的基于多载波的多址方案中操作的无线移动通信系统中测量信道质量并向基站发送信道状态信息。 移动通信系统中的终端的反馈信息发送方法包括从基站接收对应于至少两个参考信号的配置信息，在终端接收用于测量至少两个参考信号的反馈配置信息并产生反馈信息 基于测量结果，在终端处接收至少两个参考信号，并且由终端在反馈配置信息中指示的定时发送反馈信息。

公开(公告)号：US20130315081A1

公开(公告)日：2013-11-28

申请号：US13899163

申请日：2013-05-21

Applicant: Samsung Electronics Co., Ltd.

Inventor： Younsun KIM ,  Youngbum KIM ,  Juho LEE ,  Hyojin LEE ,  Joonyoung CHO ,  Hyoungju JI ,  Seunghoon CHOI

IPC: H04W24/10

CPC classification number: H04B7/0486 ,  H04B7/022 ,  H04B7/04 ,  H04B7/0417 ,  H04B7/0626 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0639 ,  H04B7/0645 ,  H04W24/10 ,  H04W72/042 ,  H04W72/082

Abstract: An apparatus and a method of measuring a reference signal for efficient downlink transmission in a mobile communication system are provided. The system includes plural base stations, each having a plurality of antennas distributed in the service area thereof based on a Distributed Antenna System (DAS). A method for a base station to notify a terminal of reference signal measurement information in a mobile communication system comprises determining whether the terminal is in a Rank Indicator/Precoding Matrix Indicator (RI/PMI) disabled mode, selecting, when the terminal is in the RI/PMI disabled mode, the reference signal to be measured by the terminal between a Cell-specific Reference Signal (CRS) and a Channel Status Information Reference Signal (CSI-RS), notifying the terminal of the reference signal measurement information with the selection result, and receiving channel information generated based on the reference signal measurement information from the terminal.

公开(公告)号：US20130250788A1

公开(公告)日：2013-09-26

申请号：US13848953

申请日：2013-03-22

Applicant: SAMSUNG ELECTRONICS CO. LTD.

Inventor： Younsun KIM ,  Hyojin LEE ,  Juho LEE ,  Kiil KIM

IPC: H04W24/10

CPC classification number: H04W24/10 ,  H04J11/0023 ,  H04L5/005 ,  H04L5/0051 ,  H04W88/085

Abstract: An interference measurement method of a terminal is provided for facilitating downlink transmission in the mobile communication system based on Distributed Antenna System (DAS) in which multiple antennas controlled by a base station are distributed within the service area of the base station. The interference measurement method includes receiving channel measurement information and interference measurement information from a base station, receiving channel state information reference signals, calculating, when the received channel state information reference signal is for channel measurement, a received signal energy based on the channel measurement information and, when the received channel state information reference signal is for interference measurement, an interference based on the interference measurement information, generating channel quality information based on the received signal energy and the interference, and transmitting the channel quality information to the base station.

Abstract translation: 提供了一种终端的干扰测量方法，用于促进基于分布式天线系统（DAS）的移动通信系统中的下行链路传输，其中由基站控制的多个天线分布在基站的服务区域内。 干扰测量方法包括从基站接收信道测量信息和干扰测量信息，接收信道状态信息参考信号，当接收信道状态信息参考信号用于信道测量时，基于信道测量信息计算接收信号能量 并且当接收到的信道状态信息参考信号用于干扰测量时，基于干扰测量信息的干扰，基于接收信号能量和干扰产生信道质量信息，并向基站发送信道质量信息。

公开(公告)号：US20130201942A1

公开(公告)日：2013-08-08

申请号：US13761857

申请日：2013-02-07

Applicant: SAMSUNG ELECTRONICS CO. LTD.

Inventor： Younsun KIM ,  Juho LEE ,  Hyojin LEE

IPC: H04W76/04

CPC classification number: H04L5/0048 ,  H04B7/024 ,  H04L27/2613 ,  H04L27/2655 ,  H04W72/042 ,  H04W76/25 ,  H04W88/08

Abstract: A data transmission method and an apparatus in a network supporting coordinated multipoint transmission are provided. The method includes transmitting candidate sets of initial state information used to generate Demodulation Reference Signal (DMRS) scrambling sequences for the transmission points to the UE, and transmitting an indication corresponding to at least one candidate set of initial state information respectively associated with at least one transmission point to the UE, wherein the initial state information is used by the UE to generate DMRS scrambling sequences.

公开(公告)号：US20130163544A1

公开(公告)日：2013-06-27

申请号：US13728450

申请日：2012-12-27

Applicant: Samsung Electronics Co., Ltd. ,  Industry-Academic Cooperation Foundation, Korea National University of Transportation

Inventor： Hyojin LEE ,  Cheol MUN ,  Kiil KIM ,  Younsun KIM ,  Juho LEE ,  Joonyoung CHO

IPC: H04W72/04

CPC classification number: H04W72/04 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/0695 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/06 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0091 ,  H04L5/143

Abstract: Methods and apparatus are provided for beamforming and information feedback are provided. Signals for beams to be transmitted through corresponding antenna ports, are generated. The beams are formed by precoding the signals with beamforming vectors. The beams are sorted into a number of resource reuse groups based on a resource that is to be shared. The beams are transmitted, using resources allocated per group, to a receiver. Feedback information is generated on at least one antenna port, based on the received beams. The feedback information is transmitted to the transmitter. A beam is selected having a greatest gain for a transmitter using the feedback information. A transmission resource is allocated for the selected beam.

Abstract translation: 提供了波束形成和信息反馈的方法和装置。 产生用于通过相应的天线端口传输的波束的信号。 通过用波束形成向量对信号进行预编码来形成波束。 基于要共享的资源将光束分类为多个资源重用组。 使用每组分配的资源将光束传输到接收器。 基于所接收的波束，在至少一个天线端口上产生反馈信息。 反馈信息被发送到发送器。 选择使用反馈信息对于发射机具有最大增益的波束。 为所选择的光束分配传输资源。

公开(公告)号：US20130157709A1

公开(公告)日：2013-06-20

申请号：US13721780

申请日：2012-12-20

Applicant: Samsung Electronics Co. Ltd.

Inventor： Hyoungju JI ,  Younsun KIM ,  Joonyoung CHO ,  Seunghoon CHOI ,  Kiil KIM ,  Hyojin LEE

IPC: H04W52/04

CPC classification number: H04W52/04 ,  H04W52/143 ,  H04W52/243 ,  H04W52/38

Abstract: A downlink power control method and apparatus for improving downlink power efficiency gain in an Orthogonal Frequency Division Multiplexing (OFDM) system is provided. The downlink power control method includes transmitting a downlink data channel at a normal subframe according to first downlink power information for the normal subframe, and transmitting the downlink data channel at an Almost Blank Subframe (ABS) according to second downlink power information for the ABS, wherein the first downlink power information for the normal subframe and the second downlink power information for the ABS differ from each other. The downlink power control method and apparatus is capable of regulating inter-cell interference variation between contiguous symbols at a predetermined level in a subframe at a terminal of a neighbor cell and making it possible to schedule the UE receiving the low power data channel using the power ratio of the feedbacks from the UE.

Abstract translation: 提供了一种用于改善正交频分复用（OFDM）系统中的下行链路功率效率增益的下行链路功率控制方法和装置。 下行链路功率控制方法包括根据用于正常子帧的第一下行链路功率信息在正常子帧发送下行链路数据信道，并且根据ABS的第二下行链路功率信息，在几乎空白子帧（ABS）下发送下行链路数据信道， 其中用于正常子帧的第一下行链路功率信息和用于ABS的第二下行链路功率信息彼此不同。 下行链路功率控制方法和装置能够调节相邻小区的终端的子帧中预定级别的连续符号之间的小区间干扰变化，并且使得能够使用该功率来调度UE接收低功率数据信道 来自UE的反馈比例。

公开(公告)号：US20250039808A1

公开(公告)日：2025-01-30

申请号：US18902191

申请日：2024-09-30

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jeongho YEO ,  Hyojin LEE ,  Younsun KIM ,  Sungjin PARK ,  Jinyoung OH

IPC: H04W56/00 ,  H04L5/00 ,  H04W28/02

Abstract: Disclosed is a method performed by a terminal in a wireless communication system, including performing rate matching for a code block based on a circular buffer, and transmitting, to a base station, uplink data based on the rate matching, wherein, in case that the rate matching is limited buffer rate matching (LBRM), a length of the circular buffer is determined based on a value obtained by dividing a transport block size (TBS) associated with the LBRM by a product of a number of code blocks of a transport block and a code rate associated with the LBRM.

公开(公告)号：US20240073077A1

公开(公告)日：2024-02-29

申请号：US18267320

申请日：2021-12-15

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yosub PARK ,  Hyojin LEE ,  Hanjin KIM ,  Seunghyun LEE ,  Juho LEE ,  Jaehyun LEE

IPC: H04L27/26

CPC classification number: H04L27/262 ,  H04L27/2627

Abstract: Disclosed are a method and device for transmitting and receiving a signal in a wireless communication system. The method may comprise the following steps: transmitting, to a terminal, information of a plurality of demodulation reference signal (DMRS) sequences and information of a plurality of data transformation techniques, transforming a data symbol sequence on the basis of the plurality of data transformation techniques, performing an inverse discrete Fourier transformation (IDFT) on combinations of the plurality of transformed data symbol sequences and the plurality of DMRS sequences, measuring peak-to-average power ratio (PAPR) values with respect to each of the IDFT-performed signals, selecting an IDFT-performed signal having the lowest PAPR value as a result of the measurement, and the selected IDFT-performed signal may be transmitted to a terminal.

公开(公告)号：US20240023039A1

公开(公告)日：2024-01-18

申请号：US18459876

申请日：2023-09-01

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jeongho YEO ,  Hyojin LEE ,  Younsun KIM ,  Sungjin PARK ,  Jinyoung OH

IPC: H04W56/00 ,  H04W28/02

CPC classification number: H04W56/001 ,  H04W28/0278

Abstract: A method and an apparatus for transmitting data in a wireless communication system are provided. A length of a circular buffer associated with rate matching is identified. Rate matching is performed for a code block based on the circular buffer. The data is transmitted based on the rate matching. In case that the rate matching is limited buffer rate matching (LBRM), the length of the circular buffer associated with the LBRM is determined based on a value obtained by dividing a reference transport block size (TBS) by a product of a number of code blocks and a reference code rate for the LBRM.