利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

578 条记录 (耗时 0.034 秒)

    CQI DEFINITION FOR TRANSMISSION MODE 9 IN LTE-ADVANCED
    53.
    发明申请
    CQI DEFINITION FOR TRANSMISSION MODE 9 IN LTE-ADVANCED 有权
    LTE-ADVANCED中传输模式9的CQI定义

    公开(公告)号：US20120176965A1

    公开(公告)日：2012-07-12

    申请号：US13167941

    申请日：2011-06-24

    申请人： Yuan Zhu ,  Qinghua Li ,  Xiaogang Chen

    发明人： Yuan Zhu ,  Qinghua Li ,  Xiaogang Chen

    IPC分类号： H04W28/18

    CPC分类号： H04W24/02 ,  H04B7/0689 ,  H04L1/0026 ,  H04L1/003 ,  H04L1/1861 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/0048 ,  H04L5/0057 ,  H04L5/0073 ,  H04L25/03949 ,  H04W24/00 ,  H04W72/00 ,  H04W72/04 ,  H04W88/08

    摘要： An evolved Node B (eNB) in a 3GPP LTE-based network receives Channel State Information-Reference Signal (CSI-RS) from a User Equipment (UE) that is configured with Precoder Matrix Indictor (PMI) disabled. A channel is estimated between the eNB and the UE for link adaptation in Transmission Mode 9 (TM9) based on CSI-RS by the UE and SRS by the eNB. CQI is calculated at UE such that if a number of CSI-RS antenna ports equals one, TM9 transmission from the eNB to the UE uses a predetermined single antenna port. If the number of CSI-RS antenna ports equals two, TM9 transmission from the eNB to the UE uses transmit diversity. If the number of CSI-RS antenna ports does not equal one or two, TM9 transmission from the eNB to the UE uses spatial multiplexing based on a rank-1 precoder that is determined from a wideband channel covariance matrix R.

    摘要翻译： 基于3GPP LTE的网络中的演进节点B（eNB）从被配置为禁用预编码矩阵指示符（PMI）的用户设备（UE）接收信道状态信息参考信号（CSI-RS）。 在eNB和UE之间估计基于UE的SRS-RS的传输模式9（TM9）中的链路自适应的信道。 在UE处计算CQI，使得如果CSI-RS天线端口的数量等于1，则从eNB到UE的TM9传输使用预定的单个天线端口。 如果CSI-RS天线端口的数量等于2，则从eNB到UE的TM9传输使用发送分集。 如果CSI-RS天线端口的数量不等于1或2，则从eNB到UE的TM9传输使用基于从宽带信道协方差矩阵R确定的秩1预编码器的空间复用。

    OPTIMIZING WIRELESS NETWORK COMMUNICATIONS
    58.
    发明申请
    OPTIMIZING WIRELESS NETWORK COMMUNICATIONS 审中-公开
    优化无线网络通信

    公开(公告)号：US20160366688A1

    公开(公告)日：2016-12-15

    申请号：US14871500

    申请日：2015-09-30

    申请人： Xiaogang Chen ,  Qinghua Li ,  Yuan Zhu ,  Yushu Zhang

    发明人： Xiaogang Chen ,  Qinghua Li ,  Yuan Zhu ,  Yushu Zhang

    IPC分类号： H04W72/04 ,  H04B7/04 ,  H04W72/08

    CPC分类号： H04B7/0452 ,  H04B7/0697 ,  H04W72/02

    摘要： Provided are systems for selecting a frequency resource allocation index that allocates a first resource unit (RU) utilized in a narrow bandwidth transmission, setting a second RU in the frequency resource allocation index as non-allocated, and receiving a stream index of a multiple-user multiple-input multiple-output (MU-MIMO) transmission, the stream index including a spatial stream indication for a station (STA) and an indication of a number of high-efficiency long training field (HE-LTF) symbols in a current PLCP Protocol Data Unit (PPDU).

    摘要翻译： 提供了一种用于选择分配在窄带宽传输中使用的第一资源单元（RU）的频率资源分配索引的系统，将频率资源分配索引中的第二RU设置为未分配，并且接收多分组索引的流索引， 用户多输入多输出（MU-MIMO）传输，所述流索引包括站（STA）的空间流指示和当前数量的高效长训练场（HE-LTF）符号的指示 PLCP协议数据单元（PPDU）。

    SYSTEMS, METHODS, AND DEVICES FOR INTERFERENCE MITIGATION IN WIRELESS NETWORKS
    59.
    发明申请
    SYSTEMS, METHODS, AND DEVICES FOR INTERFERENCE MITIGATION IN WIRELESS NETWORKS 有权
    用于无线网络干扰减轻的系统，方法和设备

    公开(公告)号：US20160142158A1

    公开(公告)日：2016-05-19

    申请号：US14858975

    申请日：2015-09-18

    申请人： Qinghua Li ,  Xiaogang Chen ,  Yuan Zhu ,  Hujun Yin

    发明人： Qinghua Li ,  Xiaogang Chen ,  Yuan Zhu ,  Hujun Yin

    IPC分类号： H04B15/00 ,  H04L5/00 ,  H04W24/02

    CPC分类号： H04B15/00 ,  H04B7/0452 ,  H04L5/0023 ,  H04L5/0048 ,  H04L27/2613 ,  H04L27/2657 ,  H04L27/2695

    摘要： Example systems, methods, and devices for mitigating interference in wireless networks are discussed. One example method includes the operations of passing channel frequency offsets of a plurality of LTF symbols on a plurality of subcarriers through a high pass frequency band, encoding the plurality of LTF symbols with a plurality of LTF sequences across frequency, and encoding the LTF symbols in time and/or frequency. Another example includes the operations of receiving a plurality of LTF symbols on a plurality of subcarriers for channel estimation of one or more streams, removing the encoding across time, removing the encoding across frequency, and removing the LTF sequence(s), and passing the modified LTF symbols through a smoothing filter, for example, a low pass filter for removing the interference due to CFOs. Methods, apparatus, and systems described herein can be applied to 802.11ax or any other wireless standard.

    摘要翻译： 讨论了用于减轻无线网络干扰的示例系统，方法和设备。 一个示例性方法包括通过高通频带在多个子载波上传递多个LTF符号的信道频率偏移的操作，通过频率对多个LTF序列进行编码，并对LTF符号进行编码 时间和/或频率。 另一示例包括在多个子载波上接收多个LTF符号以用于一个或多个流的信道估计，跨越时间去除编码，去除跨频率的编码以及去除LTF序列的操作，以及将 通过平滑滤波器（例如，用于消除由CFO引起的干扰）的低通滤波器来修改LTF符号。 本文描述的方法，装置和系统可以应用于802.11ax或任何其它无线标准。

    Wireless Communication via Combined Channel Training and Physical Layer Header Signaling
    60.
    发明申请
    Wireless Communication via Combined Channel Training and Physical Layer Header Signaling 审中-公开
    通过组合信道训练和物理层报头信令进行无线通信

    公开(公告)号：US20160066324A1

    公开(公告)日：2016-03-03

    申请号：US14583253

    申请日：2014-12-26

    申请人： Qinghua Li ,  Xiaogang Chen ,  Huaning Niu ,  Yuan Zhu

    发明人： Qinghua Li ,  Xiaogang Chen ,  Huaning Niu ,  Yuan Zhu

    IPC分类号： H04W72/04 ,  H04W72/00 ,  H04B7/06 ,  H04B7/04 ,  H04L29/06 ,  H04L5/00

    CPC分类号： H04B7/0452 ,  H04B7/0617 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0091 ,  H04L25/0232 ,  H04L69/22

    摘要： Embodiments herein relate to wireless communication using combined channel training and physical layer header (SIG) signaling. Devices that comply with the 802.11 ax or High Efficiency WLAN (HEW) standard may generate and transmit packets that include such combined information. The combined information may be beamformed to a receiver device via an OFDM signal, which may be decoded by the receiver device to obtain subsequent data included in the signal. For example, initial training symbols associated with channel training subcarriers in the signal may be detected and used to perform a rough estimate of the channel. The rough estimate may thereafter be refined using data symbols detected from adjacent data subcarriers using the channel training symbols. In this way, data subcarriers may also be used to determine a channel response along with channel training subcarriers. Channel training information may be transmitted with data, such as user-specific information, in a single symbol.

    摘要翻译： 本文的实施例涉及使用组合信道训练和物理层报头（SIG）信令的无线通信。 符合802.11 ax或高效WLAN（HEW）标准的设备可能会生成并传输包含这些组合信息的数据包。 组合的信息可以经由OFDM信号被波束形成到接收机设备，OFDM信号可以被接收机设备解码以获得包括在信号中的后续数据。 例如，可以检测与信号中的信道训练子载波相关联的初始训练符号，并用于执行信道的粗略估计。 之后可以使用使用信道训练符号从相邻数据子载波检测的数据符号来粗略估计。 以这种方式，数据副载波也可以用于确定与信道训练子载波一起的信道响应。 信道训练信息可以用单个符号中的诸如用户特定信息的数据发送。