公开(公告)号：USRE47182E1

公开(公告)日：2018-12-25

申请号：US14984814

申请日：2015-12-30

Applicant: Samsung Electronics Co., Ltd

Inventor： Ying Li ,  Sridhar Rajagopal

IPC: H04B10/00 ,  H04B10/116 ,  H04B10/03 ,  H04B10/077 ,  H04B10/079 ,  H04W76/19

Abstract: A visible light communication (VLC) device is provided for use in a VLC system. The VLC device detect a trigger condition indicating a failure of a VLC link associated with first allocated resources used to communicate with a second VLC device. In response to the detection, the VLC device terminates on the first allocated resources transmission of data to the second VLC device and transmits a fast link recovery (FLR) signal using the first allocated resources. The VLC device receives a fast link recovery response (FLR RSP) signal indicating the second VLC device received the FLR signal and, in response, the VLC device resumes transmission of data to the second VLC device.

公开(公告)号：US10075218B2

公开(公告)日：2018-09-11

申请号：US15339756

申请日：2016-10-31

Applicant: Samsung Electronics Co., Ltd

Inventor： Md. Saifur Rahman ,  Sridhar Rajagopal ,  Eko Onggosanusi ,  Thomas David Novlan ,  Aris Papasakellariou

IPC: H04L1/02 ,  H04B7/0456 ,  H04W72/04 ,  H04W84/00 ,  H04W84/18

CPC classification number: H04B7/0456 ,  H04B7/0452 ,  H04B7/0478 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/0048 ,  H04L5/006 ,  H04L5/0091 ,  H04W72/042 ,  H04W84/005 ,  H04W84/18

Abstract: A method for user equipment (UE) in a wireless communication network. The method comprises identifying a plurality of beams for a semi-open-loop PDSCH data transmission based on at least one of a plurality of precoder cycling types, wherein a precoder comprises a beam and a co-phase, and the plurality of precoder cycling types including at least one of a beam cycling from the plurality of beams or a co-phase cycling from a plurality of co-phases, receiving PDSCH data through the semi-open-loop PDSCH data transmission according to the at least one of the plurality of precoder cycling types, and identifying the plurality of beams based on the at least one of the plurality of precoder cycling types, wherein the precoder comprising the beam and co-phase, and the plurality of precoder cycling types is cycled across a plurality of resource blocks (RBs) using the at least one of the beam cycling or the co-phase cycling with at least one of a cycling period or granularity from at least one of a plurality of cycling periods or granularities including at least one of a single resource element (RE), a single RB, multiple REs, or multiple RBs.

公开(公告)号：US09444534B2

公开(公告)日：2016-09-13

申请号：US13751869

申请日：2013-01-28

Applicant: Samsung Electronics Co., Ltd.

Inventor： Farooq Khan ,  Sridhar Rajagopal ,  Zhouyue Pi ,  Shadi Abu-Surra

IPC: H04L27/00 ,  H04B7/04 ,  H04B7/06 ,  H01Q3/26 ,  H01Q21/24

CPC classification number: H04B7/0456 ,  H01Q3/26 ,  H01Q21/245 ,  H04B7/0408 ,  H04B7/0452 ,  H04B7/0617 ,  H04B7/0697

Abstract: A system is configured to perform Spatial Division Multiple Access. The system includes at least one transmitter or receiver capable of polarization alignment. The transmitter includes a baseband precoder configured to precode a signal, an array of sub-array antennas and a plurality of radio frequency (RF) chains. Each RF chain is coupled to a respective antenna sub-array of the array of antennas. The transmitter is configured to perform a method that includes precoding, by a baseband precoder, a signal for spatial division multiple access (SDMA). The method also includes applying, by each of the plurality of radio frequency (RF) chains, a phase shift and beamforming weight to the signal and transmitting the phase shifted and weighted signal by an array of sub-array antennas.

Abstract translation: 系统被配置为执行空间分多址。 该系统包括能够进行极化对准的至少一个发射器或接收器。 发射机包括被配置为对信号进行预编码的基带预编码器，子阵列天线阵列和多个射频（RF）链。 每个RF链耦合到天线阵列的相应天线子阵列。 发射机被配置为执行包括由基带预编码器预编码用于空分多址（SDMA）的信号的方法。 该方法还包括将多个射频（RF）链中的每一个应用于信号的相移和波束形成权重，并通过子阵列天线的阵列传输相移和加权的信号。

公开(公告)号：US20130223251A1

公开(公告)日：2013-08-29

申请号：US13772047

申请日：2013-02-20

Applicant: Samsung Electronics Co., LTD

Inventor： Ying Li ,  Zhouyue Pi ,  Shadi Abu-Surra ,  Sridhar Rajagopal ,  Kaushik Josiam

IPC: H04W24/10

CPC classification number: H04W24/10 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0689 ,  H04B7/0862 ,  H04W72/046

Abstract: Methods and apparatuses manage beam selection. A method for a mobile station (MS) includes identifying beamforming constraints of the MS. The method also includes performing measurement on a channel between a base station (BS) and the MS on at least one transmit (TX) beam and at least one receive (RX) beam. Additionally, the method includes sending beamforming feedback information based on the identified constraints of the MS and the channel measurement. A method for a base station (BS) includes receiving beamforming feedback information comprising at least one of radio frequency beamforming constraints of a mobile station or channel measurement information on a channel between the BS and the MS. Additionally, the method includes sending, to the MS, control information comprising an indication of at least one of MS RX beams or BS TX beams to be used in downlink communication with the MS based on the received beamforming feedback information.

Abstract translation: 方法和设备管理波束选择。 移动站（MS）的方法包括识别MS的波束成形约束。 该方法还包括在至少一个发射（TX）波束和至少一个接收（RX）波束上的基站（BS）和MS之间的信道上执行测量。 另外，该方法包括基于所识别的MS约束和信道测量发送波束成形反馈信息。 一种用于基站（BS）的方法包括：接收波束形成反馈信息，该反馈信息包括移动站的射频波束成形约束中的至少一个或在BS与MS之间的信道上的信道测量信息。 另外，该方法包括：向MS发送控制信息，该控制信息包括基于所接收的波束成形反馈信息，MS与MS之间的MS RX波束或BS TX波束中的至少一个的指示。

公开(公告)号：US20170289733A1

公开(公告)日：2017-10-05

申请号：US15469428

申请日：2017-03-24

Applicant: Samsung Electronics Co., Ltd

Inventor： Sridhar Rajagopal ,  Aris Papasakellariou ,  Thomas David Novlan

IPC: H04W4/00 ,  H04L29/08 ,  H04W72/04

CPC classification number: H04W4/70 ,  H04L5/0033 ,  H04L5/0053 ,  H04L5/0082 ,  H04L5/0087 ,  H04L67/12 ,  H04W4/40 ,  H04W4/80 ,  H04W72/042

Abstract: A user equipment (UE) and base station (BS) in a wireless communication network. The UE includes a receiver configured to receive at least one semi-persistent scheduling (SPS) configuration among a plurality of SPS configurations from a BS. Each of the SPS configurations configures the UE with a different periodicity of a sidelink transmission to be transmitted to another UE. The UE also includes a transmitter configured to transmit the sidelink transmission in the different periodicity according to the at least one of the plurality of SPS configurations. The BS includes a controller configured to select at least one SPS configuration among a plurality of SPS configurations for a UE. Each of the SPS configurations configures the UE with a different periodicity of a sidelink transmission to be transmitted to another UE. The BS also includes a transmitter configured to transmit the selected at least one SPS configuration to the UE.

公开(公告)号：US20170188391A1

公开(公告)日：2017-06-29

申请号：US15382433

申请日：2016-12-16

Applicant: Samsung Electronics Co., Ltd

Inventor： Sridhar Rajagopal ,  Thomas David Novlan ,  Aris Papasakellariou

IPC: H04W74/08 ,  H04W28/02 ,  H04W72/04

CPC classification number: H04W74/0816 ,  H04W28/0284 ,  H04W72/121 ,  H04W76/14 ,  H04W84/18

Abstract: The sensing method a first vehicle user equipment (UE) for collision avoidance in a wireless communication network comprises receiving a set of scheduling assignment (SA) information allocated to a set of second vehicle UEs, decoding the set of SA information, each of which includes SA information to each of the set of second vehicle UEs, performing energy sensing operation for resources to be used by each of the set of second vehicle UEs to determine additional potential SA transmission and data transmission from the set of second vehicle UEs over the resources, determining available resources for the data transmission from the first vehicle UE based on the performed energy sensing and SA sensing, skipping a channel sensing operation on at least one subframe that is used for the data transmission from the first vehicle UE, and transmitting data among resources identified as unused in next transmissions from second vehicle UEs.

公开(公告)号：US20160164538A1

公开(公告)日：2016-06-09

申请号：US14823744

申请日：2015-08-11

Applicant: Samsung Electronics Co., Ltd.

Inventor： Shadi Abu-Surra ,  Eran Pisek ,  Sridhar Rajagopal ,  Rakesh Taori

IPC: H03M13/11

CPC classification number: H03M13/1128 ,  H03M13/1111 ,  H03M13/1154 ,  H03M13/116 ,  H03M13/1177 ,  H03M13/618 ,  H03M13/6306 ,  H03M13/6362

Abstract: A receiver, such as a mobile station or base station, includes a sliding window-decoder. An antenna in the receiver is configured to receive a protograph-based spatially coupled low density parity check (SC-LDPC) code from a transmitter. The sliding window-decoder is configured to perform a SC-LDPC decoding operation on the SC-LDPC code using a sliding window. The SC-LDPC code includes a parity check matrix. The sliding window includes a subset of protograph sections on which decoding calculations are iteratively performed. The sliding window-decoder performs a stopping rule configured to cease the decoding calculations as a function of a syndrome of one or more check nodes (CNs) in the sliding window.

Abstract translation: 诸如移动站或基站的接收机包括滑动窗口解码器。 接收机中的天线被配置为从发射机接收基于原理图的空间耦合低密度奇偶校验（SC-LDPC）码。 滑动窗口解码器被配置为使用滑动窗对SC-LDPC码执行SC-LDPC解码操作。 SC-LDPC码包括奇偶校验矩阵。 滑动窗口包括迭代执行解码计算的原型部分的子集。 滑动窗口解码器执行停止规则，其配置为在滑动窗口中作为一个或多个检查节点（CN）的综合征的函数停止解码计算。

公开(公告)号：US20140050280A1

公开(公告)日：2014-02-20

申请号：US13964898

申请日：2013-08-12

Applicant: Samsung Electronics Co., Ltd

Inventor： Richard Stirling-Gallacher ,  Kaushik Morapakkam Josiam ,  Sridhar Rajagopal ,  Young-Han Nam

IPC: H04B7/04

CPC classification number: H04B7/0486 ,  H04B7/0452 ,  H04B7/0469 ,  H04B7/0617 ,  H04B7/0665

Abstract: A station in a wireless communication system includes a processor circuitry configured to form at least a first plurality of data streams and a second plurality of data streams, and a digital precoder configured to receive the first plurality of data streams and the second plurality of data streams. The wireless station can further include a plurality of radio frequency (RF) beamforming chains connected to the digital precoder and configured to form at least one RF envelope, wherein the digital precoder is configured to steer a plurality of digital beams within the at least one RF beam envelope, the digital beams forming a plurality of spatially distinct paths for the first plurality of data streams and a plurality of spatially distinct paths for the second plurality of data streams, and a plurality of antennas operably connected to the RF beamforming chains.

Abstract translation: 无线通信系统中的站包括配置成形成至少第一多个数据流和第二多个数据流的处理器电路，以及被配置为接收第一多个数据流和第二多个数据流的数字预编码器 。 无线站可以进一步包括连接到数字预编码器并被配置成形成至少一个RF包络的多个射频（RF）波束形成链，其中数字预编码器被配置为引导至少一个RF内的多个数字波束 波束包络，形成用于第一多个数据流的多个空间不同的路径的数字波束和用于第二多个数据流的多个空间不同的路径，以及可操作地连接到RF波束形成链的多个天线。

公开(公告)号：US20130336242A1

公开(公告)日：2013-12-19

申请号：US13899148

申请日：2013-05-21

Applicant: Samsung Electronics Co., LTD

Inventor： Sridhar Rajagopal ,  Richard Stirling-Gallacher ,  Krishna Sayana ,  Jianzhong Zhang ,  Farooq Khan

IPC: H04W72/04

CPC classification number: H04W72/0453 ,  H04B1/406 ,  H04B7/0413 ,  H04B7/0669 ,  H04B7/0671 ,  H04B7/068 ,  H04L5/00 ,  H04L5/001 ,  H04L27/0006 ,  H04W24/00 ,  H04W84/12

Abstract: An apparatus includes a baseband signal processing block, processing circuitry, and at least one radio frequency (RF) communication module communicably coupled to the baseband signal processing block and configured to communicate using a selected mode of communication in a channel. The processing circuitry is configured to detect a sub-channel band of unavailable spectrum within the channel, the band of unavailable spectrum being less than a whole of the channel. The channel includes one contiguous band of frequencies divisible into at least two non-overlapping non-adjacent sub-channels. The processing circuitry is configured to select one mode of communication selected from a plurality of modes including: a carrier aggregation (CA) only mode, a multiple input multiple output (MIMO) only mode, and a carrier aggregation multiple input multiple output (CA-MIMO) hybrid mode.

Abstract translation: 一种装置包括基带信号处理块，处理电路和至少一个可通信地耦合到基带信号处理块的射频（RF）通信模块，并被配置为使用通道中选择的通信模式进行通信。 处理电路被配置为检测信道内的不可用频谱的子信道频带，不可用频谱的频带小于整个信道。 信道包括可分为至少两个非重叠的非相邻子信道的一个连续频带。 所述处理电路被配置为选择从多种模式中选择的一种通信模式，所述多种模式包括：仅载波聚合（CA）模式，仅多输入多输出（MIMO）模式和载波聚合多输入多输出（CA- MIMO）混合模式。

公开(公告)号：US20130237218A1

公开(公告)日：2013-09-12

申请号：US13763411

申请日：2013-02-08

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ying Li ,  Zhouyue Pi ,  Sridhar Rajagopal ,  Pavan Nuggehalli ,  Shadi Abu-Surra ,  Sudhir Ramakrishna

IPC: H04W48/16

CPC classification number: H04W48/16 ,  H04W16/28 ,  H04W24/08 ,  H04W24/10 ,  H04W36/08 ,  H04W40/246 ,  H04W48/18 ,  H04W48/20 ,  H04W72/02 ,  H04W72/042 ,  H04W72/046 ,  H04W88/06

Abstract: A mobile station is configured to scan cells in a wireless network. The mobile station includes at least one antenna configured to transmit and receive wireless signals. The mobile station also includes a processor coupled to the at least one antenna, the processor configured to scan for one or more neighboring base station cells in a same frequency band as a serving base station cell using one or more receive beams. The one or more receive beams used for scanning are different than receive beams used for data communication with the serving base station cell.

Abstract translation: 移动台被配置为扫描无线网络中的小区。 移动台包括至少一个配置成发送和接收无线信号的天线。 移动站还包括耦合到至少一个天线的处理器，该处理器被配置成使用一个或多个接收波束扫描与服务基站小区相同频带中的一个或多个相邻基站小区。 用于扫描的一个或多个接收波束不同于用于与服务基站小区进行数据通信的接收波束。