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253 条记录 (耗时 0.045 秒)

    DIFFERENTIAL FEEDBACK SCHEME FOR CLOSED-LOOP MIMO BEAMFORMING
    92.
    发明申请
    DIFFERENTIAL FEEDBACK SCHEME FOR CLOSED-LOOP MIMO BEAMFORMING 有权
    闭环MIMO波束的差分反馈方案

    公开(公告)号：US20110064158A1

    公开(公告)日：2011-03-17

    申请号：US12770620

    申请日：2010-04-29

    申请人： Qinghua Li ,  Xintian Eddie Lin ,  Yuan Zhu

    发明人： Qinghua Li ,  Xintian Eddie Lin ,  Yuan Zhu

    IPC分类号： H04B7/02

    CPC分类号： H04B7/0486 ,  H04B7/0639 ,  H04B7/0641 ,  H04L25/03923 ,  H04L25/03929

    摘要： A first N×M codebook of a first rank M may be used to generate a second N×(N−M) codebook of a second rank (N−M). This second codebook is both orthogonal and complementary to the first codebook. In practice, this may reduce storage requirements in closed-loop MIMO beamforming, because the second codebook may be dynamically generated as needed by a base station and/or a mobile station. In some cases, a higher rank beamforming matrix or precoding matrix may be formed from a lower rank (e.g., one or two) beamforming matrix or precoding matrix. Also, a novel way to generate the rotation matrix Qv(t−1) is disclosed.

    摘要翻译： 可以使用第一等级M的第一N×M码本来生成第二等级（N-M）的第二N×（N-M）个码本。 该第二码本与第一码本正交和互补。 实际上，这可能减少闭环MIMO波束成形中的存储要求，因为第二码本可以根据基站和/或移动台的需要动态生成。 在一些情况下，可以从较低等级（例如，一个或两个）波束形成矩阵或预编码矩阵形成较高秩波束形成矩阵或预编码矩阵。 另外，公开了生成旋转矩阵Qv（t-1）的新颖方式。

    METHOD AND APPARATUS FOR TRANSMITTING AN ACK/NACK SIGNAL IN A WIRELESS COMMUNICATION SYSTEM
    93.
    发明申请
    METHOD AND APPARATUS FOR TRANSMITTING AN ACK/NACK SIGNAL IN A WIRELESS COMMUNICATION SYSTEM 有权
    用于在无线通信系统中发送ACK / NACK信号的方法和装置

    公开(公告)号：US20110058522A1

    公开(公告)日：2011-03-10

    申请号：US12554355

    申请日：2009-09-04

    申请人： Changlong Xu ,  Qinghua Li ,  Yuan Zhu ,  Hongmei Sun ,  Jong-Kae Fwu ,  Hujun Yin ,  Sassan Ahmadi

    发明人： Changlong Xu ,  Qinghua Li ,  Yuan Zhu ,  Hongmei Sun ,  Jong-Kae Fwu ,  Hujun Yin ,  Sassan Ahmadi

    IPC分类号： H04W72/12 ,  H04L27/28

    CPC分类号： H04L5/0053 ,  H04L1/0028 ,  H04L1/1607 ,  H04L1/1854 ,  H04L5/0007 ,  H04L5/0055

    摘要： Machine-readable media, methods, apparatus and system for transmitting ACK/NACK signal in a wireless communication system are described. In some embodiments, a sequence corresponding to one of acknowledge (ACK) information and non-acknowledge (NACK) information may be determined. Then, the sequence may be mapped onto a transmission channel for later transmission from the mobile station to a base station. In some embodiments, the transmission channel may be allocated with at least a part of three feedback mini-tiles (FMTs), wherein each of the FMTs comprises two subcarriers contiguous in frequency domain by six orthogonal frequency division multiplexing (OFDM) symbols contiguous in time domain and the three FMTs being discontinuous in frequency domain.

    摘要翻译： 描述了在无线通信系统中发送ACK / NACK信号的机器可读介质，方法，装置和系统。 在一些实施例中，可以确定与确认（ACK）信息和非确认（NACK）信息之一相对应的序列。 然后，该序列可以被映射到传输信道上，用于稍后从移动台传输到基站。 在一些实施例中，传输信道可以被分配有三个反馈小型瓦片（FMT）的至少一部分，其中每个FMT包括在频域中连续的六个正时频分复用（OFDM）符号的两个子载波 域和三个FMT在频域不连续。

    Efficient bandwith request for broadband wireless networks
    94.
    发明申请
    Efficient bandwith request for broadband wireless networks 审中-公开
    高效带宽宽带无线网络请求

    公开(公告)号：US20090323602A1

    公开(公告)日：2009-12-31

    申请号：US12217137

    申请日：2008-06-30

    申请人： Qinghua Li ,  Hujun Yin ,  Yuan Zhu ,  Xiangying Yang

    发明人： Qinghua Li ,  Hujun Yin ,  Yuan Zhu ,  Xiangying Yang

    IPC分类号： H04W28/20 ,  H04L27/28

    CPC分类号： H04W72/085 ,  H04L47/14 ,  H04W72/0406 ,  H04W74/0833

    摘要： Methods and apparatuses for scheduling transmissions between a base station and multiple user stations in a broadband wireless access network may include a subscriber station generating a bandwidth request which includes one of a limited number of available and predefined preamble sequences and a data portion identifying the resources requested. The subscriber station randomly selects a contention slot in a wireless channel, allocated by the base station, for sending a bandwidth request. The receiving base station is able to detect the preamble sequence of bandwidth requests and differentiate between subscribers even when bandwidth requests of two or more subscribers may collide by virtue of selecting the same contention slot. In this manner, latency and overhead of bandwidth requests may be improved. Additional variants and embodiments are also disclosed.

    摘要翻译： 用于调度宽带无线接入网络中的基站与多个用户站之间的传输的方法和装置可以包括生成带宽请求的用户站，所述用户站包括有限数量的可用和预定义的前导码序列之一，以及标识所请求的资源的数据部分 。 用户台随机选择由基站分配的用于发送带宽请求的无线信道中的竞争时隙。 接收基站能够检测带宽请求的前同步码序列并区分用户，即使当两个或多个用户的带宽请求可以通过选择相同的争用时隙而相冲突。 以这种方式，可以提高带宽请求的延迟和开销。 还公开了其它变型和实施方案。

    On the definition of the resource block in OFDMA/UL MUMIMO in HEW
    96.
    发明授权
    On the definition of the resource block in OFDMA/UL MUMIMO in HEW 有权
    关于HEW中OFDMA / UL MUMIMO中资源块的定义

    公开(公告)号：US09455810B2

    公开(公告)日：2016-09-27

    申请号：US14497688

    申请日：2014-09-26

    申请人： Xiaogang Chen ,  Qinghua Li ,  Robert Stacey ,  Yuan Zhu

    发明人： Xiaogang Chen ,  Qinghua Li ,  Robert Stacey ,  Yuan Zhu

    IPC分类号： H04Q7/00 ,  H04L5/00

    CPC分类号： H04W72/0446 ,  H04B7/0452 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0044 ,  H04L5/0046 ,  H04L5/0048

    摘要： Techniques for resource block allocation in a multi-user MIMO High Efficiency WLAN system are provided. Specifically, teachings that when taken alone or together, provide a device or a group of devices with an improved resource allocation for the reduction of usable tone waste, are presented. The present disclosure includes a system that provides a user with a technique allocating data tones prior to the encapsulation unit or overhead tones on a resource block unit. Further, the total allocated bandwidth can be reduced prior resource allocation to overcome modulation and coding scheme downgrading caused by severe puncturing. Alternatively, only band edge basic resource blocks are reduced to account for overhead tones which largely reside on band edges.

    摘要翻译： 提供了多用户MIMO高效WLAN系统中的资源块分配技术。 具体地说，当单独或一起采取提供具有改进的资源分配的设备或一组设备以减少可用的音调浪费时的教导。 本公开包括向用户提供在资源块单元之前在封装单元或开销音调之前分配数据音调的技术的系统。 此外，可以在先前的资源分配之前减少总分配带宽，以克服由严重穿孔引起的调制和编码方案降级。 或者，仅减少频带边缘基本资源块以考虑大部分驻留在频带边缘上的开销音调。

    EVOLVED NODE-B, USER EQUIPMENT, AND METHODS FOR CHANNEL QUALITY INDICATOR (CQI) FEEDBACK
    97.
    发明申请
    EVOLVED NODE-B, USER EQUIPMENT, AND METHODS FOR CHANNEL QUALITY INDICATOR (CQI) FEEDBACK 有权
    演进的节点B，用户设备和信道质量指示符（CQI）反馈方法

    公开(公告)号：US20160142123A1

    公开(公告)日：2016-05-19

    申请号：US14670692

    申请日：2015-03-27

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

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

    IPC分类号： H04B7/06 ,  H04B7/04

    CPC分类号： H04B7/0632 ,  H04B7/0452 ,  H04B7/0639 ,  H04B7/0647 ,  H04W84/042

    摘要： Embodiments of User Equipment (UE), an Evolved Node-B (eNB), and methods for channel quality indicator (CQI) feedback are disclosed herein. An aperiodic CQI type parameter received at the UE may indicate a CQI type for use in a determination of an aperiodic CQI based on signals received from the eNB. Channel-state information reference signals (CSI-RS) may be used when single-user multiple-input multiple-output (SU-MIMO) signals are received. Physical downlink shared channel (PDSCH) blocks may be used when multi-user multiple-input multiple-output (MU-MIMO) signals are received. The aperiodic CQI may be transmitted to the eNB as part of an aperiodic CQI measurement report. In addition, periodic CQI measurement reports may also be transmitted to the eNB and may include periodic CQIs that are based on CSI-RS received at the UE.

    摘要翻译： 本文公开了用户设备（UE），演进节点B（eNB）以及信道质量指示符（CQI）反馈的方法的实施例。 在UE处接收到的非周期性CQI类型参数可以基于从eNB接收的信号来指示用于确定非周期性CQI的CQI类型。 当接收到单用户多输入多输出（SU-MIMO）信号时，可以使用信道状态信息参考信号（CSI-RS）。 当接收到多用户多输入多输出（MU-MIMO）信号时，可以使用物理下行链路共享信道（PDSCH）块。 作为非周期性CQI测量报告的一部分，非周期性CQI可以被发送到eNB。 此外，也可以向eNB发送周期性CQI测量报告，并且可以包括基于在UE处接收的CSI-RS的周期性CQI。

    WIRELESS DEVICE, METHOD, AND COMPUTER READABLE MEDIA FOR SIGNALING A SHORT TRAINING FIELD IN A HIGH-EFFICIENCY WIRELESS LOCAL AREA NETWORK
    98.
    发明申请
    WIRELESS DEVICE, METHOD, AND COMPUTER READABLE MEDIA FOR SIGNALING A SHORT TRAINING FIELD IN A HIGH-EFFICIENCY WIRELESS LOCAL AREA NETWORK 有权
    无线设备，方法和计算机可读介质，用于在高效无线本地区网络中进行短信训练

    公开(公告)号：US20160128005A1

    公开(公告)日：2016-05-05

    申请号：US14751551

    申请日：2015-06-26

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

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

    IPC分类号： H04W52/52 ,  H04L5/00 ,  H04W72/04

    CPC分类号： H04L27/2613 ,  H04L5/0007 ,  H04L5/0048 ,  H04W52/325 ,  H04W52/34 ,  H04W72/1289

    摘要： Apparatuses, methods, and computer readable media for signaling high efficiency short training field are disclosed. A high-efficiency wireless local-area network (HEW) station is disclosed. The HEW station may comprise circuitry configured to: receive a trigger frame comprising an allocation of a resource block for the HEW station, and transmit a high efficiency short training field (HE-STF) with a same bandwidth as a subsequent data portion, wherein the transmit is to be in accordance with orthogonal frequency division multiple access (OFDMA) and wherein the transmit is within the resource block. A subcarrier allocation for the HE-STF may matche a subcarrier allocation for the subsequent data portion. The HE-STF and the subsequent data portion may be transmitted with a same power. A total power of active subcarriers of the HE-STF may be equal to or proportional to a second total of data subcarriers and pilot subcarriers of the subsequent data portion.

    摘要翻译： 公开了用于信令高效率短训练场的装置，方法和计算机可读介质。 公开了一种高效无线局域网（HEW）站。 HEW站可以包括被配置为：接收包括HEW站的资源块的分配的触发帧，并且发送与后续数据部分具有相同带宽的高效率短训练场（HE-STF），其中， 传输将与正交频分多址（OFDMA）一致，并且其中传输在资源块内。 用于HE-STF的子载波分配可以为后续数据部分模拟子载波分配。 可以以相同的功率发送HE-STF和后续数据部分。 HE-STF的有效子载波的总功率可以等于或者与后续数据部分的数据子载波和导频子载波的第二总数成比例。