公开(公告)号：US09537552B2

公开(公告)日：2017-01-03

申请号：US14850157

申请日：2015-09-10

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yang Li ,  Young-Han Nam ,  Eko Onggosanusi ,  Md. Saifur Rahman ,  Jianzhong Zhang

IPC: H04B7/02 ,  H04B7/04 ,  H04B7/06 ,  H04L5/00

CPC classification number: H04B7/0456 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/0639 ,  H04L5/005

Abstract: Non-zero power channel state information reference signals (CSI-RS) are transmitted only on a subsampled pattern of antennas within an antenna array. Based on the transmitted CSI-RS, channel state information is determined for all antennas within the antenna array by, for example, precoder matrix indicator (PMI) interpolation or channel quality indicator (CQI) compensation. The determination of CSI for all antennas within the antenna array may be made by a user equipment receiving the subsampled CSI-RS or a base station transmitting the subsampled CSI-RS.

Abstract translation: 非零功率信道状态信息参考信号（CSI-RS）仅在天线阵列内的子采样天线模式上发射。 基于发送的CSI-RS，通过例如预编码器矩阵指示符（PMI）内插或信道质量指示符（CQI）补偿来确定天线阵列内的所有天线的信道状态信息。 天线阵列内所有天线的CSI的确定可以由接收子采样的CSI-RS的用户设备或发送子采样CSI-RS的基站进行。

公开(公告)号：US20160248562A1

公开(公告)日：2016-08-25

申请号：US14997356

申请日：2016-01-15

Applicant: Samsung Electronics Co., Ltd

Inventor： Young-Han Nam ,  Jianzhong Zhang ,  Eko Onggosanusi ,  Taeyoung Kim ,  Hoondong Noh ,  Yang Li

IPC: H04L5/00 ,  H04L27/26

CPC classification number: H04L27/2601 ,  H04L5/0023 ,  H04L5/0051

Abstract: A mobile station includes a receiver configured to receive containing a complex-valued modulation symbol from a base station, a processor configured to extract the complex-valued modulation symbol from the signal, wherein in response to being configured with code-division multiplex-4 (CDM-4), the complex-valued modulation symbol is mapped using a reference signal sequence. A base station includes a processor configured to generate a reference signal sequence for each subcarrier and OFDM symbol, and in response to being configured with code-division multiplex-4 (CDM-4), map a reference signal sequence to the complex-valued modulation symbols. Other embodiments including a method for performing communication on multiple input multiple output (MIMO) radio links are also disclosed.

Abstract translation: 移动台包括接收机，被配置为从基站接收包含复值调制符号，处理器被配置为从信号中提取复值调制符号，其中响应于被配置有码分多路复用4（ CDM-4），使用参考信号序列映射复值调制符号。 基站包括被配置为为每个子载波和OFDM符号生成参考信号序列的处理器，并且响应于配置有码分多路复用-4（CDM-4），将参考信号序列映射到复值调制 符号。 还公开了包括用于在多输入多输出（MIMO）无线电链路上执行通信的方法的其他实施例。

公开(公告)号：US20160156397A1

公开(公告)日：2016-06-02

申请号：US14800305

申请日：2015-07-15

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Eko Onggosanusi ,  Jianzhong Zhang ,  Yang Li ,  Young-Han Nam ,  Boon Loong Ng

IPC: H04B7/04 ,  H04B7/06 ,  H04W24/08 ,  H04L5/00

CPC classification number: H04B7/0456 ,  H04B7/0421 ,  H04B7/0626 ,  H04L5/0048

Abstract: A method for operating a base station includes allocating at least one respective CSI-RS port to each of a plurality of user equipments (UEs), precoding the at least one respective CSI-RS port with a first respective precoding matrix for each of the plurality of UEs, transmitting the at least one respective CSI-RS port precoded with the first respective precoding matrix through a channel to each of the plurality of UEs, receiving an index of a second respective precoding matrix from each of the plurality of UEs, wherein the second respective precoding matrix is determined according to the at least respective one CSI-RS port precoded with the first precoding matrix as received through the channel by each of the plurality of UEs, and precoding respective transmission data with the first respective precoding matrix and the second respective precoding matrix to each of the plurality of UEs.

Abstract translation: 一种用于操作基站的方法包括：将至少一个相应的CSI-RS端口分配给多个用户设备（UE）中的每一个，对所述多个用户设备（UE）中的每个用户设备的第一个相应的预编码矩阵预编码至少一个相应的CSI-RS端口 通过一个信道将与第一相应的预编码矩阵预编码的至少一个相应的CSI-RS端口发送到多个UE中的每一个，从多个UE中的每一个接收第二个相应的预编码矩阵的索引，其中， 根据至少相应的一个CSI-RS端口来确定第二相应的预编码矩阵，所述至少相应的一个CSI-RS端口用由多个UE中的每一个通过信道接收的第一预编码矩阵预编码，并且用第一相应预编码矩阵预编码相应的传输数据， 相应的预编码矩阵到多个UE中的每一个。

公开(公告)号：US20160135180A1

公开(公告)日：2016-05-12

申请号：US14935172

申请日：2015-11-06

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jin Yuan ,  Yang Li ,  Young-Han Nam ,  Ioannis Tzanidis ,  Gang Xu ,  Md. Saifur Rahman ,  Yan Xin ,  Robert Monroe ,  Jianzhong Zhang ,  Eko Onggosanusi

IPC: H04W72/04 ,  H04B7/04

CPC classification number: H04B7/043 ,  H01Q1/246 ,  H01Q3/2605 ,  H01Q3/267 ,  H01Q21/065 ,  H01Q21/22 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0617 ,  H04B7/0671 ,  H04B17/12 ,  H04B17/373 ,  H04L5/0048

Abstract: A method for operating a large scale antenna array in a wireless communication system includes receiving one or more signals. The one or more signals include information for beamforming to a plurality of user equipments (UEs) using a full-dimensional multiple-input multiple-output (FD-MIMO) beamforming scheme. The FD-MIMO beamforming scheme includes same time resources and same frequency resources that are co-scheduled to the plurality of UEs. The method further includes identifying a time delay of the one or more signals associated with one or more antenna arrays that are distributed in the large scale antenna array and performing a multi-user (MU) joint beamforming on the one or more signals to one or more UEs.

Abstract translation: 一种用于在无线通信系统中操作大规模天线阵列的方法包括接收一个或多个信号。 一个或多个信号包括使用全维多输入多输出（FD-MIMO）波束成形方案的波束成形到多个用户设备（UE）的信息。 FD-MIMO波束成形方案包括与多个UE共同调度的相同的时间资源和相同的频率资源。 该方法还包括识别与分配在大尺度天线阵列中的一个或多个天线阵列相关联的一个或多个信号的时间延迟，并且对一个或多个信号执行多用户（MU）联合波束成形，以一个或多个 更多的UE。

公开(公告)号：US09178583B2

公开(公告)日：2015-11-03

申请号：US14149436

申请日：2014-01-07

Applicant: Samsung Electronics Co., Ltd.

Inventor： Young-Han Nam ,  Yang Li ,  Boon Loong Ng

IPC: H04B7/02 ,  H04B7/04 ,  H04B7/06

CPC classification number: H04B7/0417 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0639 ,  H04L5/0023 ,  H04L5/005

Abstract: Methods and apparatuses for providing feedback by a UE. A method includes receiving a first set of CSI-RS and a second set of CSI-RS, calculating a CQI using a received power of the first set of CSI-RS and a channel matrix estimated based on the second set of CSI-RS, and sending feedback based on the calculated CQI. A method includes measuring signals received on a plurality of CSI-RS ports; calculating CQI values for each of applications of precoding matrixes to each of the selected combinations of CSI-RS ports; selecting a SPN, a SPI, a PMI, and a RI that yields a highest CQI from among the calculated CQI values; and sending feedback indicating the SPI, the highest CQI value, the PMI, and at least one of the SPN or the RI.

Abstract translation: 用于提供UE的反馈的方法和装置。 一种方法包括接收第一组CSI-RS和第二组CSI-RS，使用第一组CSI-RS的接收功率和基于CSI-RS的第二组估计的信道矩阵来计算CQI， 并基于所计算的CQI发送反馈。 一种方法包括测量在多个CSI-RS端口上接收的信号; 将每个预编码矩阵的应用的CQI值计算到所选择的CSI-RS端口组合中的每一个; 从所计算的CQI值中选择产生最高CQI的SPN，SPI，PMI和RI; 并发送指示SPI的反馈，最高CQI值，PMI以及SPN或RI中的至少一个。

公开(公告)号：US20150003343A1

公开(公告)日：2015-01-01

申请号：US14316215

申请日：2014-06-26

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yang Li ,  Young-Han Nam ,  Yan Xin

IPC: H04W52/24 ,  H04L5/00

CPC classification number: H04W52/243 ,  H04B7/0617 ,  H04B7/0632 ,  H04B7/0639 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0073 ,  H04W52/42 ,  H04W88/08

Abstract: A method for network assisted interference mitigation includes identifying at least one pair of adjacent resource blocks within a same subframe. The at least one pair includes a low power resource block (RB) and a high power RB. The low power RB has a substantially lower beamforming gain compared to the high beamforming gain of the high power RB such that a ratio (R) comparing receive powers of the high power RB and the low power RB to each other is greater than a threshold ratio (μ). The method includes reducing a transmit power of the high power RE to a reduced transmit power level at which the ratio R is less than or equal to the threshold ratio μ (R≦μ).

Abstract translation: 一种用于网络辅助干扰减轻的方法包括识别同一子帧内的至少一对相邻资源块。 至少一对包括低功率资源块（RB）和高功率RB。 与高功率RB的高波束成形增益相比，低功率RB具有相当低的波束形成增益，使得将高功率RB和低功率RB的接收功率彼此比较的比（R）大于阈值比 （μ）。 该方法包括将高功率RE的发射功率降低到比率R小于或等于阈值比μ（R＆lt; IL1;μ）的降低的发射功率电平。

公开(公告)号：US20250158850A1

公开(公告)日：2025-05-15

申请号：US18930930

申请日：2024-10-29

Applicant: Samsung Electronics Co., Ltd.

Inventor： Samuel Albert ,  Thuy Van Nguyen ,  Yeqing Hu ,  Yang Li ,  Yan Xin ,  Jianzhong Zhang

IPC: H04L25/02 ,  H04B17/336

Abstract: A method includes acquiring, by a processor of an electronic device, information associated with channel and noise covariances. The method includes determining one or more time-domain rectangular filters based on the information associated with the channel and noise covariances. The method includes generating one or more convolutional kernels based on the one or more rectangular filters applied to the channel and noise covariances in a time-domain. The method includes generating a codebook based on the one or more convolutional kernels, the codebook comprising N codewords. Further, the method can include establishing a communication link to a gNB configured to: receive a reference signal from a user equipment; receive the codebook; calculate channel statistics using a low complexity algorithm; execute a decision tree classifier to select a codeword from the codebook stored in memory of the gNB; and apply the selected codeword as convolution kernel for channel estimation.

公开(公告)号：US12068799B2

公开(公告)日：2024-08-20

申请号：US17541160

申请日：2021-12-02

Applicant: Samsung Electronics Co., Ltd.

Inventor： Rui Wang ,  Yang Li ,  Yeqing Hu ,  Junmo Sung ,  Tiexing Wang ,  Jianzhong Zhang

IPC: H04B17/373 ,  H04B1/713 ,  H04B7/06 ,  H04L5/00

CPC classification number: H04B17/373 ,  H04B7/0626 ,  H04B7/0639 ,  H04B1/713 ,  H04L5/0048

Abstract: Methods and apparatuses for a channel estimation and prediction operation in a wireless communication systems. A method of a BS comprises: receiving an SRS; partitioning, based on a partition policy, a frequency band of the SRS into sub-bandwidths in a frequency domain; generating, based on previously stored CSI in memory and the partition policy, a set of chunks corresponding to respective sub-bandwidths; performing CHPD operations corresponding to the respective sub-bandwidths to generate channel parameters, wherein different CHPD operations are applied to the respective sub-bandwidths; combining the channel parameters predicted from the respective sub-bandwidths in the frequency domain; and performing, based on the combined channel parameters, a channel estimation and prediction operation.

公开(公告)号：US20240063931A1

公开(公告)日：2024-02-22

申请号：US18363670

申请日：2023-08-01

Applicant: Samsung Electronics Co., Ltd.

Inventor： Tiexing Wang ,  R A Nadisanka Perera Rupasinghe ,  Daoud Burghal ,  Yang Li

IPC: H04B17/391 ,  H04B7/0417 ,  H04B7/06

CPC classification number: H04B17/3913 ,  H04B7/0417 ,  H04B7/0626

Abstract: Apparatuses and methods for transmission mode adaptation in New Radio (NR) with AI/ML assistance. A base station includes a transceiver configured to receive a set of input metrics. The set of input metrics comprises at least one metric derived from a channel state information (CSI) report. The base station further includes a processor operably coupled to the transceiver, the processor configured to determine, based on the set of input metrics, a first multiple-input multiple-output (MIMO) mode throughput prediction and a second MIMO mode throughput prediction, generate, based on the first MIMO mode throughput prediction, a predicted first MIMO mode throughput result, generate, based on the second MIMO mode throughput prediction, a predicted second MIMO mode throughput result, and select a MIMO mode based on the predicted first MIMO mode throughput result and the predicted second MIMO mode throughput result.

公开(公告)号：US20240048191A1

公开(公告)日：2024-02-08

申请号：US18330316

申请日：2023-06-06

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jianzhong Zhang ,  Yang Li ,  Gilwon Lee ,  Yeqing Hu ,  Shadi Abu-Surra ,  Md. Saifur Rahman

IPC: H04B7/0417 ,  H04B7/0452

CPC classification number: H04B7/0417 ,  H04B7/0452 ,  H04L5/0053

Abstract: Calibration in distributed multiple input multiple output (MIMO) networks. A method performed by a first base station (BS) includes receiving a first uplink (UL) reference signal (RS) and determining, based on the first UL RS and a second UL RS, a first phase offset for transmission of a first downlink (DL) RS to a user equipment (UE). The second UL RS is associated with a second BS. The first phase offset of the first DL RS is relative to a second DL RS associated with the second BS. The method further includes transmitting the first DL RS with the first phase offset; receiving UE feedback associated with the first DL RS and the second DL RS; and determining, based on the first phase offset and the received feedback, for a DL data transmission to the UE, a second phase offset between transmissions of the first BS and the second BS.