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    Method and apparatus for transmitting and receiving reference signals in wireless communication
    2.
    发明授权
    Method and apparatus for transmitting and receiving reference signals in wireless communication 有权

    公开(公告)号：US11038557B2

    公开(公告)日：2021-06-15

    申请号：US15472212

    申请日：2017-03-28

    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.

    Methods and apparatus for low power operation utilizing multiple ADCs with different precisions
    4.
    发明授权
    Methods and apparatus for low power operation utilizing multiple ADCs with different precisions 有权

    公开(公告)号：US09960946B2

    公开(公告)日：2018-05-01

    申请号：US14622449

    申请日：2015-02-13

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Sudhir Ramakrishna

    IPC: H04L27/26 ,  H04L25/00 ,  H04L25/02 ,  H04L1/00

    CPC classification number: H04L27/2695 ,  H04L1/0005 ,  H04L25/00 ,  H04L25/0292 ,  H04L27/2691

    Abstract: An electronic device includes processing circuitry configured to detect a presence of a packet transmission via a channel, establish communication parameters and operational settings of an analog-to-digital conversion (ADC) operation using a training field (TF) of the packet if the packet comprises the TF, and utilize a channel estimation (CE) portion of the packet to perform channel estimation of the channel. The processing circuitry is also configured to utilize the channel estimates to compensate for distortions introduced by the channel with respect to portions of the packet subsequent to the CE portion, obtain a modulation order and coding scheme used for the data portion of the packet, select an analog-to-digital converter (ADC) to be used for a recovery of the data portion of the packet, and recover the information in the data portion of the packet using ADC output samples corresponding to the data portion of the packet.

    Methods and apparatus for cyclic prefix reduction in MMwave mobile communication systems
    8.
    发明授权
    Methods and apparatus for cyclic prefix reduction in MMwave mobile communication systems 有权
    MMwave移动通信系统循环前缀减少的方法和装置

    公开(公告)号：US09531573B2

    公开(公告)日：2016-12-27

    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: H04K1/10 ,  H04L27/28 ,  H04L27/26 ,  H04J13/00 ,  H04B7/06 ,  H04L1/00

    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。

    METHODS AND APPARATUS FOR LOW POWER OPERATION UTILIZING MULTIPLE ADCs WITH DIFFERENT PRECISIONS
    9.
    发明申请
    METHODS AND APPARATUS FOR LOW POWER OPERATION UTILIZING MULTIPLE ADCs WITH DIFFERENT PRECISIONS 有权
    低功耗操作方法与装置利用多种不同精度的多模ADC

    公开(公告)号：US20160028578A1

    公开(公告)日：2016-01-28

    申请号：US14622449

    申请日：2015-02-13

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Sudhir Ramakrishna

    IPC: H04L27/26 ,  H04L1/00

    CPC classification number: H04L27/2695 ,  H04L1/0005 ,  H04L25/00 ,  H04L25/0292 ,  H04L27/2691

    Abstract: An electronic device includes processing circuitry configured to detect a presence of a packet transmission via a channel, establish communication parameters and operational settings of an analog-to-digital conversion (ADC) operation using a training field (TF) of the packet if the packet comprises the TF, and utilize a channel estimation (CE) portion of the packet to perform channel estimation of the channel. The processing circuitry is also configured to utilize the channel estimates to compensate for distortions introduced by the channel with respect to portions of the packet subsequent to the CE portion, obtain a modulation order and coding scheme used for the data portion of the packet, select an analog-to-digital converter (ADC) to be used for a recovery of the data portion of the packet, and recover the information in the data portion of the packet using ADC output samples corresponding to the data portion of the packet.

    Abstract translation: 电子设备包括处理电路，其被配置为经由信道检测分组传输的存在，使用分组的训练字段（TF）建立模数转换（ADC）操作的通信参数和操作设置，如果分组 包括TF，并且利用分组的信道估计（CE）部分来执行信道的信道估计。 处理电路还被配置为利用信道估计来补偿信道相对于CE部分之后的分组的部分引入的失真，获得用于数据包的数据部分的调制阶数和编码方案，选择一个 模数转换器（ADC），用于恢复分组的数据部分，并且使用对应于分组的数据部分的ADC输出样本来恢复分组的数据部分中的信息。

    METHOD AND SYSTEM FOR PROVIDING LOW-COMPLEXITY HYBRID PRECODING IN WIRELESS COMMUNICATION SYSTEMS
    10.
    发明申请
    METHOD AND SYSTEM FOR PROVIDING LOW-COMPLEXITY HYBRID PRECODING IN WIRELESS COMMUNICATION SYSTEMS 审中-公开
    在无线通信系统中提供低复杂度混合预测的方法和系统

    公开(公告)号：US20140334564A1

    公开(公告)日：2014-11-13

    申请号：US14185863

    申请日：2014-02-20

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Jaspreet Singh ,  Sudhir Ramakrishna

    IPC: H04B7/04

    CPC classification number: H04B7/0413 ,  H04B7/0456 ,  H04B7/0617

    Abstract: A method for providing low-complexity hybrid precoding is provided. The method includes identifying a subset of a plurality of precoding sets as a reduced search space. A search is performed over the reduced search space for a preferred precoding set. Identifying the reduced search space may include determining at least one parameter, such as received power, for each of a plurality of beam directions.

    Abstract translation: 提供了一种用于提供低复杂度混合预编码的方法。 该方法包括将多个预编码集合的子集识别为缩减的搜索空间。 对于优选的预编码集合在缩小的搜索空间上执行搜索。 识别减小的搜索空间可以包括为多个波束方向中的每一个确定至少一个参数，例如接收的功率。

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