利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

132 条记录 (耗时 0.033 秒)

    Pilot and data transmission in a quasi-orthogonal single-carrier frequency division multiple access system
    112.
    发明申请
    Pilot and data transmission in a quasi-orthogonal single-carrier frequency division multiple access system 有权
    准正交单载波分频多址系统中的导频和数据传输

    公开(公告)号：US20070014272A1

    公开(公告)日：2007-01-18

    申请号：US11242115

    申请日：2005-09-30

    申请人： Ravi Palanki ,  Aamod Khandekar ,  Arak Sutivong

    发明人： Ravi Palanki ,  Aamod Khandekar ,  Arak Sutivong

    IPC分类号： H04B7/208

    CPC分类号： H04B7/04 ,  H04L1/1819 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0206 ,  H04L25/022 ,  H04L25/0226 ,  H04L25/0228 ,  H04L25/0256

    摘要： In a single-carrier frequency division multiple access (SC-FDMA) system that utilizes interleaved FDMA (IFDMA) or localized FDMA, multiple transmitters may transmit their pilots using time division multiplexing (TDM), code division multiplexing (CDM), interleaved frequency division multiplexing (IFDM), or localized frequency division multiplexing (LFDM). The pilots from these transmitters are then orthogonal to one another. A receiver performs the complementary demultiplexing for the pilots sent by the transmitters. The receiver may derive a channel estimate for each transmitter using an MMSE technique or a least-squares technique. The receiver may receive overlapping data transmissions sent on the same time-frequency block by the multiple transmitters and may perform receiver spatial processing with spatial filter matrices to separate these data transmissions. The receiver may derive the spatial filter matrices based on the channel estimates for the transmitters and using zero-forcing, MMSE, or maximal ratio combining technique.

    摘要翻译： 在采用交织FDMA（IFDMA）或集中式FDMA的单载波频分多址（SC-FDMA）系统中，多个发射机可以使用时分多路复用（TDM），码分多路复用（CDM），交错分频 复用（IFDM）或局部频分复用（LFDM）。 来自这些发射机的飞行员然后彼此正交。 接收机对由发射机发送的导频进行互补解复用。 接收机可以使用MMSE技术或最小二乘法来为每个发射机导出信道估计。 接收机可以接收由多个发射机在相同时间频率块上发送的重叠数据传输，并且可以使用空间滤波器矩阵来执行接收机空间处理以分离这些数据传输。 接收机可以基于发射机的信道估计和使用零强制，MMSE或最大比组合技术导出空间滤波器矩阵。

    OFDMA reverse link scheduling
    113.
    发明申请
    OFDMA reverse link scheduling 有权
    OFDMA反向链路调度

    公开(公告)号：US20060293076A1

    公开(公告)日：2006-12-28

    申请号：US11452722

    申请日：2006-06-13

    申请人： David Julian ,  Arak Sutivong

    发明人： David Julian ,  Arak Sutivong

    IPC分类号： H04B7/00 ,  H04Q7/20

    CPC分类号： H04W52/223 ,  H04L5/0007 ,  H04L5/0053 ,  H04L5/023 ,  H04W52/146 ,  H04W52/16 ,  H04W52/241 ,  H04W52/247 ,  H04W72/0473 ,  H04W72/12 ,  H04W72/1231 ,  H04W72/1268

    摘要： Systems and methodologies are described that facilitate scheduling via a power control algorithm that dynamically update a scheduling metric (e.g., adjusting transmission power for sub-carriers) based on a prediction function and/or inference model of expected power requirements. In one aspect, the power prediction component can include two further components, namely: the data channel component and the control channel component—wherein a carrier to interference ratio (C/I) information is being transmitted on such control channel and the power is adjusted to obtain performance requirements. Accordingly, an efficient scheduling of users on a reverse link in an orthogonal manner can be provided, to optimally use system resources, while simultaneously: maintaining a predetermined and/or arbitrary fairness metrics, maintaining quality of service and maximizing throughput.

    摘要翻译： 描述了通过基于预期功率需求的预测函数和/或推理模型的动态地更新调度度量（例如，调整子载波的发射功率）的功率控制算法来促进调度的系统和方法。 在一个方面，功率预测组件可以包括两个另外的组件，即：数据信道分量和控制信道分量，其中载波干扰比（C / I）信息正在这种控制信道上传输，并且功率被调整 获得性能要求。 因此，可以提供以正交方式在反向链路上的用户的有效调度，以最佳地利用系统资源，同时：维持预定和/或任意的公平度量，维持服务质量和最大化吞吐量。

    Power control and quality of service (QoS) implementation in a communication system
    116.
    发明申请
    Power control and quality of service (QoS) implementation in a communication system 失效

    公开(公告)号：US20060215559A1

    公开(公告)日：2006-09-28

    申请号：US11349611

    申请日：2006-02-07

    申请人： Murat Mese ,  Arak Sutivong

    发明人： Murat Mese ,  Arak Sutivong

    IPC分类号： H04L12/26

    CPC分类号： H04W52/265

    摘要： For Quality of Service (QoS) implementation in a multiple-access communication system, a base station processes data transmissions from terminals for all QoS classes supported by the system and obtains status information for the data transmissions. The status information may indicate whether each packet is decoded correctly or in error and the delay for each packet. For each QoS class, the base station derives one or more metrics based on the status information for data transmissions from disadvantaged terminals and updates the QoS parameter based on the metrics and requirements for the QoS class. The QoS parameter for each QoS class determines the transmit powers for the data transmissions sent for that QoS class. The base station broadcasts the QoS parameters for all QoS classes. Each terminal uses the QoS parameter for an applicable QoS class for power control of the data transmission sent to the base station.

    Code division multiplexing in a single-carrier frequency division multiple access system
    118.
    发明授权
    Code division multiplexing in a single-carrier frequency division multiple access system 有权
    在单载波频分多址系统中进行码分复用

    公开(公告)号：US08885628B2

    公开(公告)日：2014-11-11

    申请号：US11431969

    申请日：2006-05-10

    申请人： Ravi Palanki ,  Aamod Khandekar ,  Arak Sutivong

    发明人： Ravi Palanki ,  Aamod Khandekar ,  Arak Sutivong

    IPC分类号： H04B7/216 ,  H04J4/00 ,  H04B7/00 ,  H04L5/00 ,  H04B1/692 ,  H04J11/00 ,  H04L25/02 ,  H04L25/03 ,  H04L27/26

    CPC分类号： H04W72/0406 ,  H04B1/692 ,  H04J1/00 ,  H04J11/00 ,  H04J13/10 ,  H04L5/0021 ,  H04L5/0026 ,  H04L5/0037 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/0226 ,  H04L25/0228 ,  H04L25/0242 ,  H04L25/03866 ,  H04L27/2613 ,  H04L27/2615 ,  H04L27/2636 ,  H04L27/2643

    摘要： In a single-carrier frequency division multiple access (SC-FDMA) system that utilizes interleaved FDMA (IFDMA) or localized FDMA (LFDMA), a transmitter generates modulation symbols for different types of data (e.g., traffic data, signaling, and pilot) and performs code division multiplexing (CDM) on at least one data type. For example, the transmitter may apply CDM on signaling and/or pilot sent on frequency subbands and symbol periods that are also used by at least one other transmitter. To apply CDM to a given data type (e.g., signaling), the transmitter performs spreading on the modulation symbols for that data type with an assigned spreading code. CDM may be applied across symbols, samples, samples and symbols, frequency subbands, and so on. The transmitter may perform scrambling after the spreading. The transmitter generates SC-FDMA symbols of the same or different symbol durations for traffic data, signaling, and pilot and transmits the SC-FDMA symbols.

    摘要翻译： 在采用交织FDMA（IFDMA）或局部FDMA（LFDMA）的单载波频分多址（SC-FDMA）系统中，发射机为不同类型的数据（例如业务数据，信令和导频）生成调制符号， 并对至少一种数据类型进行码分复用（CDM）。 例如，发射机可以在也被至少一个其他发射机使用的频率子带和符号周期上发送的信令和/或导频上应用CDM。 为了将CDM应用于给定数据类型（例如，信令），发射机对具有分配的扩展码的数据类型的调制符号执行扩展。 CDM可以跨符号，样本，样本和符号，频率子带等应用。 发射机可以在扩频之后执行加扰。 发射机产生业务数据，信令和导频的相同或不同符号持续时间的SC-FDMA符号，并发送SC-FDMA符号。

    User separation in space division multiple access for a multi-carrier communication system
    119.
    发明授权
    User separation in space division multiple access for a multi-carrier communication system 有权
    用于多载波通信系统的空分多址的用户分离

    公开(公告)号：US08363603B2

    公开(公告)日：2013-01-29

    申请号：US11333890

    申请日：2006-01-18

    申请人： Min Dong ,  Tingfang Ji ,  Dhananjay Ashok Gore ,  Alexei Gorokhov ,  Arak Sutivong

    发明人： Min Dong ,  Tingfang Ji ,  Dhananjay Ashok Gore ,  Alexei Gorokhov ,  Arak Sutivong

    IPC分类号： H04W4/00

    CPC分类号： H04B7/0617 ,  H04B7/0452 ,  H04W16/04 ,  H04W16/28

    摘要： Apparatuses and methodologies are described that increase system capacity in a multi-access wireless communication system. Spatial dimensions may be utilized to distinguish between multiple signals utilizing the same channel and thereby increase system capacity. Signals may be separated by applying beamforming weights based upon the spatial signature of the user device-base station pair. Grouping spatially orthogonal or disparate user devices on the same channel facilitates separation of signals and maximization of user device throughput performance. User devices may be reassigned to groups periodically or based upon changes in the spatial relationships between the user devices and the base station.

    摘要翻译： 描述了增加多址无线通信系统中的系统容量的装置和方法。 可利用空间维度来区分使用相同信道的多个信号，从而增加系统容量。 可以基于用户设备 - 基站对的空间签名应用波束成形权重来分离信号。 在相同信道上对空间正交或不同用户设备进行分组有助于信号分离和用户设备吞吐量性能的最大化。 用户设备可以周期性地或基于用户设备和基站之间的空间关系的改变重新分配给组。

    Methods and apparatus for efficient providing of scheduling information
    120.
    发明授权
    Methods and apparatus for efficient providing of scheduling information 有权
    有效提供调度信息的方法和装置

    公开(公告)号：US08098667B2

    公开(公告)日：2012-01-17

    申请号：US11450230

    申请日：2006-06-08

    申请人： David Jonathan Julian ,  Arak Sutivong

    发明人： David Jonathan Julian ,  Arak Sutivong

    IPC分类号： H04Q7/00 ,  H04L12/28 ,  H04L12/56

    CPC分类号： H04W72/1278 ,  H04W72/12 ,  H04W72/1205 ,  H04W88/08

    摘要： Systems and methodologies are described that facilitate efficiently providing scheduling information from an access terminal to a base station to enable effectuating scheduling decisions. Access terminals may transmit scheduling information in bifurcated requests. For instance, coarse scheduling information may be transferred utilizing a dedicated out-of-band channel, and fine scheduling information may be transmitted over an in-band channel.

    摘要翻译： 描述了有助于有效地从接入终端向基站提供调度信息以实现执行调度决策的系统和方法。 接入终端可以在分叉请求中传送调度信息。 例如，可以使用专用带外信道来传送粗调度信息，并且精细调度信息可以通过带内信道来发送。