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    Pilot design for wireless system
    3.
    发明授权
    Pilot design for wireless system 有权
    无线系统的试点设计

    公开(公告)号：US08537915B2

    公开(公告)日：2013-09-17

    申请号：US13476242

    申请日：2012-05-21

    申请人： Dong-Sheng Yu ,  Mo-Han Fong ,  Jianglei Ma ,  Sophie Vrzic ,  Hang Zhang

    发明人： Dong-Sheng Yu ,  Mo-Han Fong ,  Jianglei Ma ,  Sophie Vrzic ,  Hang Zhang

    IPC分类号： H04K1/10

    CPC分类号： H04L27/2613 ,  H04B7/0413 ,  H04B7/0621 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/0226 ,  H04L27/26 ,  H04L27/2611 ,  H04L27/2647 ,  H04L27/2662 ,  H04L2025/03414

    摘要： The description herein relates to pilot designs for an Orthogonal Frequency Division Multiplexing (OFDM) based communication system. In the preferred embodiment, the communication system is one operating according to the IEEE 802.16m, or WiMax, standard. In general, an OFDM transmitter operates to insert pilot symbols into a resource of a transmit frame according to a predetermined staggered pilot symbol pattern defining pilot symbol locations within the resource of the transmit frame. The predetermined pilot symbol pattern is defined such that pilot symbols are located at or near time boundaries of the resource, at or near frequency boundaries of the resource, or both. By doing so, when generating a channel estimate for the communication channel between the OFDM transmitter and an OFDM receiver based on the pilot symbols, extrapolations needed to estimate the channel near the boundaries of the resource are optimized, thereby improving overall channel estimation accuracy.

    摘要翻译： 这里的描述涉及用于基于正交频分复用（OFDM）的通信系统的导频设计。 在优选实施例中，通信系统是根据IEEE 802.16m或WiMax标准进行操作的通信系统。 通常，OFDM发射机操作以根据在发送帧的资源内定义导频符号位置的预定交错导频符号模式将导频符号插入到发射帧的资源中。 定义的导频符号模式被定义为使得导频符号位于资源的时间边界处或附近，在资源的频率边界处或附近，或两者附近。 通过这样做，当基于导频符号生成OFDM发射机和OFDM接收机之间的通信信道的信道估计时，优化估计资源边界附近的信道所需的外推，从而提高整体信道估计精度。

    PILOT DESIGN FOR WIRELESS SYSTEM
    7.
    发明申请
    PILOT DESIGN FOR WIRELESS SYSTEM 有权
    无线系统的引导设计

    公开(公告)号：US20120224659A1

    公开(公告)日：2012-09-06

    申请号：US13476242

    申请日：2012-05-21

    申请人： Dong-Sheng Yu ,  Mo-Han Fong ,  Jianglei Ma ,  Sophie Vrzic ,  Hang Zhang

    发明人： Dong-Sheng Yu ,  Mo-Han Fong ,  Jianglei Ma ,  Sophie Vrzic ,  Hang Zhang

    IPC分类号： H04B1/10 ,  H04L27/28

    CPC分类号： H04L27/2613 ,  H04B7/0413 ,  H04B7/0621 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/0226 ,  H04L27/26 ,  H04L27/2611 ,  H04L27/2647 ,  H04L27/2662 ,  H04L2025/03414

    摘要： The description herein relates to pilot designs for an Orthogonal Frequency Division Multiplexing (OFDM) based communication system. In the preferred embodiment, the communication system is one operating according to the IEEE 802.16m, or WiMax, standard. In general, an OFDM transmitter operates to insert pilot symbols into a resource of a transmit frame according to a predetermined staggered pilot symbol pattern defining pilot symbol locations within the resource of the transmit frame. The predetermined pilot symbol pattern is defined such that pilot symbols are located at or near time boundaries of the resource, at or near frequency boundaries of the resource, or both. By doing so, when generating a channel estimate for the communication channel between the OFDM transmitter and an OFDM receiver based on the pilot symbols, extrapolations needed to estimate the channel near the boundaries of the resource are optimized, thereby improving overall channel estimation accuracy.

    摘要翻译： 这里的描述涉及用于基于正交频分复用（OFDM）的通信系统的导频设计。 在优选实施例中，通信系统是根据IEEE 802.16m或WiMax标准进行操作的通信系统。 通常，OFDM发射机操作以根据在发送帧的资源内定义导频符号位置的预定交错导频符号模式将导频符号插入到发射帧的资源中。 定义的导频符号模式被定义为使得导频符号位于资源的时间边界处或附近，在资源的频率边界处或附近，或两者附近。 通过这样做，当基于导频符号生成OFDM发射机和OFDM接收机之间的通信信道的信道估计时，优化估计资源边界附近的信道所需的外推，从而提高整体信道估计精度。

    METHOD AND APPARATUS FOR DETERMINING CHANNEL QUALITY INDEX IN MULTIPLE USER-MIMO COMMUNICATION NETWORKS
    8.
    发明申请
    METHOD AND APPARATUS FOR DETERMINING CHANNEL QUALITY INDEX IN MULTIPLE USER-MIMO COMMUNICATION NETWORKS 有权
    在多用户MIMO通信网络中确定通道质量指标的方法和装置

    公开(公告)号：US20130128820A1

    公开(公告)日：2013-05-23

    申请号：US13265639

    申请日：2010-04-21

    申请人： Sophie Vrzic ,  Mo-Han Fong ,  Robert Novak ,  Dong-Sheng Yu ,  Jianglei Ma ,  Jianglei Ma

    发明人： Jun Yuan ,  Sophie Vrzic ,  Mo-Han Fong ,  Robert Novak ,  Dong-Sheng Yu ,  Jianglei Ma ,  Jianglei Ma

    IPC分类号： H04W72/08 ,  H04B7/04

    CPC分类号： H04W72/085 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0623 ,  H04B7/0632 ,  H04B7/0634 ,  H04B7/0686 ,  H04B17/373 ,  H04L1/0005 ,  H04L1/0016 ,  H04L1/0026 ,  H04L1/0031 ,  H04L1/0656 ,  H04W36/385 ,  H04W88/08

    摘要： In order to minimize the control signaling overhead associated with transmitting CQI data from mobile stations to base stations in wireless communication networks supporting MU-MIMO, the CQI during MU-MIMO operation is estimated based on SU-MIMO CQI data, mobile station geometry data, and mobile station PMI (Precoding Matrix Index) data. More particularly, the base station maintains and updates a knowledge pool that correlates geometry data and learned impact of interfering precoder data to degradation of CQI values responsive to switching from SU-MIMO operation to MU-MIMO operations. Then, when the base station switches from SU-MIMO operation to MU-MIMO operation, it consults the knowledge pool to predict the degradation in CQI and subtracts them from the known, pre-switching SU-MIMO CQI feedback data for each relevant mobile station to predict the post-switching MU-MIMO CQIs for that mobile station.

    摘要翻译： 为了最小化支持MU-MIMO的无线通信网络中的将CQI数据从移动站发送到基站的控制信令开销，基于SU-MIMO CQI数据，移动站几何数据， 和移动台PMI（预编码矩阵索引）数据。 更具体地，基站维护和更新将几何数据与学习的干扰预编码器数据的影响相关联的知识库与响应于从SU-MIMO操作切换到MU-MIMO操作的CQI值劣化。 然后，当基站从SU-MIMO操作切换到MU-MIMO操作时，它咨询知识库以预测CQI中的劣化，并从每个相关移动站的已知的预切换SU-MIMO CQI反馈数据中减去它们 以预测该移动台的后切换MU-MIMO CQI。

    Systems and methods for uplink signaling using time-frequency resources
    10.
    发明授权
    Systems and methods for uplink signaling using time-frequency resources 有权
    使用时间频率资源的上行链路信令的系统和方法

    公开(公告)号：US09288024B2

    公开(公告)日：2016-03-15

    申请号：US13617224

    申请日：2012-09-14

    申请人： Robert Novak ,  Mo-Han Fong ,  Sophie Vrzic ,  Jun Yuan ,  Dong-Sheng Yu ,  Jianglei Ma

    发明人： Robert Novak ,  Mo-Han Fong ,  Sophie Vrzic ,  Jun Yuan ,  Dong-Sheng Yu ,  Jianglei Ma

    IPC分类号： H04W4/00 ,  H04L5/00

    CPC分类号： H04W72/0413 ,  H04B7/12 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0044 ,  H04L5/0053 ,  H04W72/1268 ,  H04W74/0866

    摘要： Methods, base stations and access terminals for uplink signalling are provided. Resource request channel characteristics such as location in time-frequency, sequence, time slot, are assigned to each access terminal to distinguish their resource requests from the resource requests of other access terminals. Access terminals make requests using a resource request on a resource request channel having the assigned characteristics. The base station can then determine which access terminal transmitted 0 the resource request based on the resource request channel characteristics of the resource request channel upon which the resource>request was received. The base station then transmits a response to the request which may for example be a new resource allocation, a default allocation or a renewal of a previous allocation.

    摘要翻译： 提供了用于上行链路信令的方法，基站和接入终端。 向每个接入终端分配资源请求信道特性，例如时频，序列，时隙中的位置，以将其资源请求与其他接入终端的资源请求区分开。 接入终端在具有分配特性的资源请求信道上使用资源请求进行请求。 然后，基站可以基于接收到资源>请求的资源请求信道的资源请求信道特性来确定哪个接入终端发送了资源请求。 然后，基站发送对该请求的响应，该请求例如可以是新的资源分配，默认分配或先前分配的更新。