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    CHANNEL ESTIMATION FOR DATA TRANSMISSION PARAMETER DETERMINATION IN SYSTEMS EMPLOYING AN ARRAY-OF-SUBARRAYS TRANSCEIVER ARCHITECTURE
    21.
    发明申请
    CHANNEL ESTIMATION FOR DATA TRANSMISSION PARAMETER DETERMINATION IN SYSTEMS EMPLOYING AN ARRAY-OF-SUBARRAYS TRANSCEIVER ARCHITECTURE 有权
    数据传输的信道估计在采用子系统收货机架构的系统中进行参数确定

    公开(公告)号：US20150124738A1

    公开(公告)日：2015-05-07

    申请号：US14473875

    申请日：2014-08-29

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Sudhir Ramakrishna ,  Jaspreet Singh

    IPC: H04L5/00 ,  H04L25/02 ,  H04W72/04

    CPC classification number: H04L5/0048 ,  H04B7/0404 ,  H04B7/0456 ,  H04B7/0697 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/0224 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04W72/0413 ,  H04W72/046

    Abstract: A method and an apparatus for channel estimation. The method includes identifying a set of preferred BS receive beams for each of a plurality of BS antenna SAs based on periodic pilot transmissions from a UE transmitted using predefined UE transmit beams. The method also includes transmitting a request for the UE to transmit pilot signals for the set of preferred BS receive beams. The method further includes receiving the pilot signals using the set of preferred BS receive beams. The method also includes performing channel estimation and determining the data transmission parameters based on the received pilot signals, the data transmission parameters including at least one receive beam at each UE antenna SA to be used for data reception. Additionally, the method includes transmitting, to the UE, information for identifying the at least one receive beam at each UE antenna SA to be used for data reception.

    Abstract translation: 一种用于信道估计的方法和装置。 该方法包括基于使用预定义的UE发送波束发送的来自UE的周期性导频传输来识别多个BS天线SA中的每一个的优选BS接收波束集合。 该方法还包括发送对UE发送用于该组优选BS接收波束的导频信号的请求。 该方法还包括使用该组优选的BS接收波束来接收导频信号。 该方法还包括基于所接收的导频信号执行信道估计和确定数据传输参数，数据传输参数包括用于数据接收的每个UE天线SA处的至少一个接收波束。 此外，该方法包括向UE发送用于识别用于数据接收的每个UE天线SA处的至少一个接收波束的信息。

    METHODS AND APPARATUS FOR CYCLIC PREFIX REDUCTION IN MMWAVE MOBILE COMMUNICATION SYSTEMS
    22.
    发明申请
    METHODS AND APPARATUS FOR CYCLIC PREFIX REDUCTION IN MMWAVE MOBILE COMMUNICATION SYSTEMS 有权
    在MMWAVE移动通信系统中循环前缀减少的方法和装置

    公开(公告)号：US20130315321A1

    公开(公告)日：2013-11-28

    申请号：US13856797

    申请日：2013-04-04

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Sridhar Rajagopal ,  Shadi Abu-Surra ,  Ankit Gupta ,  Sudhir Ramakrishna ,  Kaushik Josiam ,  Zhouyue Pi ,  Ying Li

    IPC: H04L27/26

    CPC classification number: H04L27/2607 ,  H04B7/0695 ,  H04J13/0062 ,  H04L1/0031 ,  H04L27/261

    Abstract: To reduce the duration of a cyclic prefix used for a multiple input, multiple output (MIMO) communications channel, delay spread variations for different transmit/receive beam pair combination is estimated and used for fast beam switching and to support single user MIMO (SU-MIMO) even when the CP difference between two beams is large. Beam switching reference signals are employed to estimate delay spread exceeding current CP, and to support beam switching. CP covering sub-clusters within clusters for the MIMO channel are exploited to reduce the CP requirement and improve efficiency. Any one of a number of different CP durations may be selected for each different mobile station, using one of a finite set of subframe configurations for which the CP durations of different symbol locations within the subframe are predefined. Dynamically switching subframe configurations by the system accommodates high mobility.

    Abstract translation: 为了减少用于多输入的循环前缀的持续时间，多输出（MIMO）通信信道，用于不同发射/接收波束对组合的延迟扩展变化被估计并用于快速波束切换并且支持单用户MIMO（SU- MIMO），即使两个波束之间的CP差异较大。 采用光束切换参考信号来估计超过当前CP的延迟扩展，并支持波束切换。 覆盖用于MIMO信道的群集内的子簇的CP被利用以减少CP需求并提高效率。 可以使用预定义子帧内不同符号位置的CP持续时间的子帧配置的有限集合之一来为每个不同移动台选择多个不同CP持续时间中的任何一个。 通过系统动态切换子帧配置可以实现高移动性。

    Method and apparatus for transmitting and receiving reference signals in wireless communication
    24.
    发明授权
    Method and apparatus for transmitting and receiving reference signals in wireless communication 有权

    公开(公告)号：US11509355B2

    公开(公告)日：2022-11-22

    申请号：US17303710

    申请日：2021-06-04

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Young Han Nam ,  Boon Loong Ng ,  Yang Li ,  Sudhir Ramakrishna ,  Md. Saifur Rahman

    IPC: H04B7/024 ,  H04B7/06 ,  H04L5/00

    Abstract: A base station includes a controller configured to configure an MRS resource set comprising a group of MRS resources, each MRS resource comprising a set of MRS antenna ports. If at least two MRS antenna ports belong to a same MRS resource, then the at least two MRS antenna ports are quasi co-located with respect to a first set of QCL parameters, else if the at least two MRS antenna ports belong to a same MRS resource set, then the at least two MRS antenna ports are quasi co-located with respect to a second set of QCL parameters, and else the at least two MRS antenna ports are not quasi co-located with respect to either the first set or the second set of QCL parameters. The MRS is a CSI-RS for estimating a CSI and at least one of the first set and the second set of QCL parameters.

    Method and apparatus for frame structure for advanced communication systems
    25.
    发明授权
    Method and apparatus for frame structure for advanced communication systems 有权

    公开(公告)号：US10285170B2

    公开(公告)日：2019-05-07

    申请号：US15407218

    申请日：2017-01-16

    Applicant: Samsung Electronics Co., Ltd

    Inventor： Young-Han Nam ,  Li Guo ,  Sudhir Ramakrishna

    IPC: H04W72/04 ,  H04W72/12 ,  H04L5/00 ,  H04W88/02 ,  H04W88/08

    Abstract: A method of a user equipment (UE) in a wireless communication system. The method comprises receiving, from a base station (BS), a dynamic downlink control signal including sounding reference signal (SRS) resource and configuration information based on user pool scheduling information, wherein the UE is included in a user pool group determined by the user pool scheduling information. The method further comprises determining the SRS resource and configuration information included in the user pool scheduling information received by the dynamic downlink control signal and transmitting, to the BS, SRS based on the SRS resource and configuration information included in the user pool scheduling information.

    Channel estimation for data transmission parameter determination in systems employing an array-of-subarrays transceiver architecture
    27.
    发明授权
    Channel estimation for data transmission parameter determination in systems employing an array-of-subarrays transceiver architecture 有权
    使用阵列阵列收发器架构的系统中数据传输参数确定的信道估计

    公开(公告)号：US09450723B2

    公开(公告)日：2016-09-20

    申请号：US14473875

    申请日：2014-08-29

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Sudhir Ramakrishna ,  Jaspreet Singh

    IPC: H04W4/00 ,  H04L5/00 ,  H04L25/02 ,  H04B7/04 ,  H04B7/06 ,  H04W72/04 ,  H04L25/03

    CPC classification number: H04L5/0048 ,  H04B7/0404 ,  H04B7/0456 ,  H04B7/0697 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/0224 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04W72/0413 ,  H04W72/046

    Abstract: A method and an apparatus for channel estimation. The method includes identifying a set of preferred BS receive beams for each of a plurality of BS antenna SAs based on periodic pilot transmissions from a UE transmitted using predefined UE transmit beams. The method also includes transmitting a request for the UE to transmit pilot signals for the set of preferred BS receive beams. The method further includes receiving the pilot signals using the set of preferred BS receive beams. The method also includes performing channel estimation and determining the data transmission parameters based on the received pilot signals, the data transmission parameters including at least one receive beam at each UE antenna SA to be used for data reception. Additionally, the method includes transmitting, to the UE, information for identifying the at least one receive beam at each UE antenna SA to be used for data reception.

    Abstract translation: 一种用于信道估计的方法和装置。 该方法包括基于使用预定义的UE发送波束发送的来自UE的周期性导频传输来识别多个BS天线SA中的每一个的优选BS接收波束集合。 该方法还包括发送对UE发送用于该组优选BS接收波束的导频信号的请求。 该方法还包括使用该组优选的BS接收波束来接收导频信号。 该方法还包括基于所接收的导频信号执行信道估计和确定数据传输参数，数据传输参数包括用于数据接收的每个UE天线SA处的至少一个接收波束。 此外，该方法包括向UE发送用于识别用于数据接收的每个UE天线SA处的至少一个接收波束的信息。

    Method and apparatus for initial access in wireless communication systems
    29.
    发明授权
    Method and apparatus for initial access in wireless communication systems 有权

    公开(公告)号：US10887143B2

    公开(公告)日：2021-01-05

    申请号：US15582575

    申请日：2017-04-28

    Applicant: Samsung Electronics Co., Ltd

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

    IPC: H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04W74/00

    Abstract: A base station includes a controller configured to map initial access signals, each initial access signal corresponding to one of a plurality of transmit beams, to a subset or all of a plurality of predefined time locations in at least one periodicity, and a transmitter configured to transmit the mapped initial access signals to a UE and indicate OFDM symbols that are not mapped with the initial access signals in the one periodicity to the UE. A UE includes a transceiver configured to receive initial access signals mapped to a subset or all of time locations in one periodicity from a base station, the each initial access signal corresponding to one of a plurality of different beams, and a controller configured to perform an initial access to the base station and receive the indication of OFDM symbols that are not mapped with the initial access signals in the one periodicity.

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