利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

578 条记录 (耗时 0.03 秒)

    CSI-RS ANTENNA PORTS EXTENSION AND 3D CODEBOOK DESIGN
    1.
    发明申请
    CSI-RS ANTENNA PORTS EXTENSION AND 3D CODEBOOK DESIGN 有权
    CSI-RS天线端口扩展和3D代码设计

    公开(公告)号：US20150180684A1

    公开(公告)日：2015-06-25

    申请号：US14128338

    申请日：2013-09-27

    申请人： Xiaogang Chen ,  Yuan Zhu ,  Qinghua Li ,  Alexei V. Davydov ,  Hooman Shirani-Mehr

    发明人： Xiaogang Chen ,  Yuan Zhu ,  Qinghua Li ,  Alexei V. Davydov ,  Hooman Shirani-Mehr

    IPC分类号： H04L25/03 ,  H04B17/24 ,  H04B7/04

    CPC分类号： H04L25/03929 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/0478 ,  H04B7/0617 ,  H04B17/24 ,  H04L5/0048

    摘要： A system and a method is disclosed for selecting at least one vertical precoding vector of a three-dimensional Multiple Input Multiple Output (3D-MIMO) configuration based on Channel State Information-Reference Signal (CSI-RS) information that is feedback from a wireless terminal device to an evolved Node B (eNB). The 3D-MIMO CSI-RS process is configured for a plurality of CSI-RS ports in which the plurality of CSI-RS ports that are grouped into a plurality of CSI-RS port groups and in which corresponds to the 3D arrangement of antennas. CSI configuration information for the different CSI-RS port groups can be a time-domain-based CSI-RS process, a frequency-domain-based CSI-RS process, a code-domain-based CSI-RS process, or a combination thereof. CSI-RS information is measured for each CSI-RS group and feedback for selection of the at least one vertical precoding vector.

    摘要翻译： 公开了一种用于基于来自无线电的反馈的信道状态信息参考信号（CSI-RS）信息来选择三维多输入多输出（3D-MIMO）配置的至少一个垂直预编码向量的系统和方法 终端设备到演进节点B（eNB）。 为多个CSI-RS端口配置3D-MIMO CSI-RS进程，其中分组为多个CSI-RS端口组并且其中对应于天线的3D布置的多个CSI-RS端口。 不同CSI-RS端口组的CSI配置信息可以是基于时域的CSI-RS进程，基于频域的CSI-RS进程，基于码域的CSI-RS进程或其组合 。 针对每个CSI-RS组测量CSI-RS信息和用于选择至少一个垂直预编码向量的反馈。

    Multicarrier transmitter for multiple-input multiple-output communication systems and methods for puncturing bits for pilot tones
    2.
    发明授权
    Multicarrier transmitter for multiple-input multiple-output communication systems and methods for puncturing bits for pilot tones 失效
    用于多输入多输出通信系统的多载波发射机和用于对导频音进行删截比特的方法

    公开(公告)号：US07706455B2

    公开(公告)日：2010-04-27

    申请号：US11234972

    申请日：2005-09-26

    申请人： Alexei V. Davydov ,  Qinghua Li

    发明人： Alexei V. Davydov ,  Qinghua Li

    IPC分类号： H04L27/28

    CPC分类号： H04L1/0041 ,  H04L1/0068 ,  H04L1/0625 ,  H04L5/0023 ,  H04L5/0048 ,  H04L27/2626

    摘要： Embodiments of a transmitter and methods for puncturing bits are generally described herein. Other embodiments may be described and claimed. In some embodiments, a multicarrier transmitter performs bit puncturing for pilot subcarriers in two operations. The first operation may uniformly removes bits from an encoded bit stream to achieve a predetermined code rate reserving space for pilot subcarriers of a predetermined number of antennas. The second operation may remove bits from each spatial data stream after interleaving in a manner to achieve approximately equal spacing between the punctured bits before interleaving. In this way, a conventional interleaver may be used. The second operation reserves space for pilot subcarriers when a greater number of antennas than the predetermined number are used.

    摘要翻译： 发射机的实施例和穿孔比特的方法一般在此描述。 可以描述和要求保护其他实施例。 在一些实施例中，多载波发射机在两个操作中对导频子载波执行比特删截。 第一操作可以均匀地从编码比特流中移除比特以实现预定数量的天线的导频子载波的预定码率预留空间。 第二操作可以在交织之后从每个空间数据流中移除比特，以便在交织之前在穿孔比特之间实现大致相等的间隔。 以这种方式，可以使用常规的交织器。 当使用比预定数量更多的天线时，第二操作为导频子载波保留空间。

    EXTREME HIGH THROUGHPUT TRAINING FIELDS FOR TRIGGER BASED NULL DATA PACKET FEEDBACK
    8.
    发明申请
    EXTREME HIGH THROUGHPUT TRAINING FIELDS FOR TRIGGER BASED NULL DATA PACKET FEEDBACK 有权

    公开(公告)号：US20210399923A1

    公开(公告)日：2021-12-23

    申请号：US17465769

    申请日：2021-09-02

    申请人： Xiaogang Chen ,  Qinghua Li ,  Laurent Cariou

    发明人： Xiaogang Chen ,  Qinghua Li ,  Laurent Cariou

    IPC分类号： H04L25/02 ,  H04L5/00 ,  H04L25/03

    摘要： This disclosure describes systems, methods, and devices related to EHT training fields. A device may send a trigger frame having a type of HE null data packet (NDP) feedback, wherein the trigger frame requests feedback from a station device (STA) of one or more station device (STA). The device may receive a frame from the STA, wherein the frame comprises an HE long training field (HE-LTF) portion and an HE short training field (HE-STF), wherein the HE-STF is generated in a frequency domain over a first bandwidth. The device may identify that the HE-LTF comprises energy on a set of tones, wherein the set of tones are selected based on feedback status values associated with a resource unit (RU) tone set index. The device may identify that the HE-STF comprises a second set of tones that are energized based on a sequence that is selected based on the first bandwidth used for the frame

    TRIGGER-BASED PPDU RESOURCE INDICATION FOR EHT NETWORKS
    9.
    发明申请
    TRIGGER-BASED PPDU RESOURCE INDICATION FOR EHT NETWORKS 有权

    公开(公告)号：US20210144752A1

    公开(公告)日：2021-05-13

    申请号：US17123893

    申请日：2020-12-16

    申请人： Xiaogang Chen ,  Qinghua Li ,  Feng Jiang ,  Ziv Avital ,  Po-Kai Huang

    发明人： Xiaogang Chen ,  Qinghua Li ,  Feng Jiang ,  Ziv Avital ,  Po-Kai Huang

    IPC分类号： H04W74/00 ,  H04W72/04 ,  H04W72/12 ,  H04W84/12 ,  G06F11/10

    摘要： An extremely high throughput (EHT) station (STA) configured for trigger based (TB) transmission may decode an trigger frame (TF) received from an access point (AP). The TF may include an assignment of resources comprising one or more 20 MHz channels. The EHT STA may determine which of the one or more assigned channels are available for transmission and which of the allocated channels are unavailable when the EHT STA is assigned more than one 20 MHz channel. The EHT STA may encode a EHT TB PPDU in response to the trigger frame. The EHT TB PPDU may be encoded to include an EHT preamble followed by a data field. The EHT preamble may be encoded to indicate channel availability. The EHT STA may generate signaling to cause the EHT STA to transmit the encoded EHT TB PPDU only on the assigned channels that have been determined to be available.