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    Methods and apparatus to transmit and receive synchronization signals in a mobile communication system
    3.
    发明授权
    Methods and apparatus to transmit and receive synchronization signals in a mobile communication system 有权
    在移动通信系统中发送和接收同步信号的方法和装置

    公开(公告)号：US09491755B2

    公开(公告)日：2016-11-08

    申请号：US13652279

    申请日：2012-10-15

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Shadi Abu-Surra ,  Sridhar Rajagopal ,  Ying Li ,  Jaspreet Singh ,  Zhouyue Pi

    IPC: H04W72/04 ,  H04J11/00 ,  H04W56/00 ,  H04B7/04 ,  H04B7/08

    CPC classification number: H04W72/044 ,  H04B7/0408 ,  H04B7/0891 ,  H04J11/0069 ,  H04W56/00 ,  H04W72/042

    Abstract: Beam-steered millimeter wave signals transmitted in each of n sector slices include a sequence of primary synchronization (PSCH) symbols within predetermined symbol positions in at least one slot of a subframe. The symbols in consecutive symbol positions are each transmitted on a different one of the n slices, with the first symbol repeated on the same slice at the end. The sequence order rotates cyclically in each subframe so that two PSCH symbols are transmitted on one slice in a single subframe every nth subframe. Secondary synchronization (SSCH) and Broadcast Channel (BCH) symbols are transmitted in a predetermined pattern following the sequence of PSCH symbols. By transmitting consecutive PSCH symbols on different slices and repeating the first symbol, the mobile station can detect the best slice and beam by switching receive beams every subframe instead of every slot, relaxing time constraints on AGC adjustment while avoiding the start-at-the-edge problem.

    Abstract translation: 在n个扇区片段中的每一个中发送的光束转向毫米波信号包括在子帧的至少一个时隙中的预定符号位置内的主同步（PSCH）符号序列。 连续符号位置中的符号各自在n个片上的不同的一个上被发送，其中第一个符号在最后的同一片上重复。 序列顺序在每个子帧中循环旋转，使得在每第n个子帧中在单个子帧中的一个片上发送两个PSCH符号。 按照PSCH符号序列之后的预定模式发送辅同步（SSCH）和广播信道（BCH）符号。 通过在不同的片上发送连续的PSCH符号并重复第一个符号，移动台可以通过每个子帧而不是每个时隙切换接收波束来检测最佳切片和波束，放宽对AGC调整的时间约束，同时避免起始时间， 边缘问题。

    Preamble design for supporting multiple topologies with visible light communication
    5.
    发明授权
    Preamble design for supporting multiple topologies with visible light communication 有权
    序言设计支持可见光通信的多个拓扑

    公开(公告)号：US08913631B2

    公开(公告)日：2014-12-16

    申请号：US13765285

    申请日：2013-02-12

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Sridhar Rajagopal ,  Eun Tae Won ,  Ying Li

    IPC: H04J1/00 ,  H04L7/04 ,  H04B10/116 ,  H04B10/112 ,  H04B10/114

    CPC classification number: H04B10/116 ,  H04B10/1125 ,  H04B10/1149 ,  H04L7/041 ,  H04L7/046

    Abstract: For use in visible light communication (VLC), synchronization with multiple topology support while transmitting an extended preamble includes transmitting a two-part preamble sequence. The preamble sequence includes one or more repetitions of a fast locking pattern (FLP) configured to be used clock synchronization, and one or more repetitions of a topology dependent pattern (TDP) configured to be used to distinguish a plurality of VLC topologies. The method for transmitting an extended preamble includes generating an extended preamble and transmitting the extended preamble during a receive or idle mode for maintaining visibility support and for better synchronization performance.

    Abstract translation: 为了在可见光通信（VLC）中使用，在发送扩展前同步码时与多个拓扑支持同步包括发送两部分的前导码序列。 前导序列包括配置为使用时钟同步的快速锁定模式（FLP）的一个或多个重复，以及被配置为用于区分多个VLC拓扑的拓扑依赖模式（TDP）的一个或多个重复。 用于发送扩展前同步码的方法包括在接收或空闲模式期间生成扩展前导码并发送扩展前同步码，以便维持可视性支持和更好的同步性能。

    METHOD AND APPARATUS FOR 3D ORIENTATION-FREE WIRELESS POWER TRANSFER
    6.
    发明申请
    METHOD AND APPARATUS FOR 3D ORIENTATION-FREE WIRELESS POWER TRANSFER 审中-公开
    用于3D定向无线电力传输的方法和装置

    公开(公告)号：US20130300205A1

    公开(公告)日：2013-11-14

    申请号：US13833856

    申请日：2013-03-15

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Ioannis Tzanidis ,  Sridhar Rajagopal ,  Farshid Aryanfar

    IPC: H04B5/00

    CPC classification number: H04B5/0037 ,  H02J5/005 ,  H02J7/025 ,  H02J50/12 ,  H04B5/0087

    Abstract: A transmit resonator includes at least two loop resonators, disposed in such that the magnetic field produced by each in the near-field zone is substantially orthogonal to that produced by the other at a certain or specific portion of the zone, a power divider configured to split a signal into at least two sub-signals with weighting coefficients, a delay array configured to delay the at least one of the sub-signals and feed each of the sub-signals to each of the loop resonators, and a controller to configure the delay array to control the polarization of the near zone magnetic field. A communication module to receive feedback information from a receiver, to determine the phases of at least two sub-signals to generate a near zone magnetic field optimized for the receiver.

    Abstract translation: 发射谐振器包括至少两个环路谐振器，其布置成使得由近场区域中的每一个产生的磁场与该区域的特定或特定部分处的另一个所产生的磁场基本上正交;功率分配器，被配置为 将信号分解成具有加权系数的至少两个子信号，延迟阵列被配置为延迟所述至少一个子信号并将每个子信号馈送到每个环路谐振器，以及控制器， 延迟阵列来控制近区磁场的极化。 一种通信模块，用于从接收机接收反馈信息，以确定至少两个子信号的相位以产生为接收机优化的近区磁场。

    APPARATUS AND METHOD FOR LOW COMPLEXITY SPATIAL DIVISION MULTIPLE ACCESS IN A MILLIMETER WAVE MOBILE COMMUNICATION SYSTEM
    7.
    发明申请
    APPARATUS AND METHOD FOR LOW COMPLEXITY SPATIAL DIVISION MULTIPLE ACCESS IN A MILLIMETER WAVE MOBILE COMMUNICATION SYSTEM 有权
    微型移动通信系统中低复杂度空间分割多路访问的装置和方法

    公开(公告)号：US20130202054A1

    公开(公告)日：2013-08-08

    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: H04B7/04

    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。

    Fast association in millimeter wave wireless local area network systems
    10.
    发明授权
    Fast association in millimeter wave wireless local area network systems 有权

    公开(公告)号：US10411780B2

    公开(公告)日：2019-09-10

    申请号：US14757415

    申请日：2015-12-23

    Applicant: Samsung Electronics Co., LTD

    Inventor： Sridhar Rajagopal ,  Rakesh Taori

    IPC: H04B7/06 ,  H04B7/08 ,  H04W72/04

    Abstract: Methods and apparatuses for association in a beamformed wireless area network (WLAN) are provided. A method for operating a station (STA) includes randomly selecting a plurality of sector sweep frames for association beam transmission within a frame-aligned transmit sector sweep duration in an association beamforming training duration of a beacon interval, transmitting a beam in each of the randomly selected sector sweep frames, and receiving sector sweep feedback from an access point (AP). A method for operating the AP includes receiving at least one transmission from one or more STAs on at least one of randomly selected sector sweep frames within the frame-aligned transmit sector sweep duration, selecting a sector identifier for transmissions from each of the one or more STAs based on the at least one received transmission, and transmitting grouped sector sweep feedback indicating the selected sector identifier for transmissions from each of the one or more STAs.

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