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    ON-HAND REVERSE-LINK PILOT TRANSMISSION
    51.
    发明申请
    ON-HAND REVERSE-LINK PILOT TRANSMISSION 有权
    ON-HAND REVERSE-LINK PILOT传输

    公开(公告)号：US20100238896A1

    公开(公告)日：2010-09-23

    申请号：US12721906

    申请日：2010-03-11

    申请人： Arak Sutivong ,  Avneesh Agrawal ,  Alexei Gorokhov ,  Edward Harrison Teague

    发明人： Arak Sutivong ,  Avneesh Agrawal ,  Alexei Gorokhov ,  Edward Harrison Teague

    IPC分类号： H04W72/04

    CPC分类号： H04W74/04 ,  H04W74/002

    摘要： Pilots are transmitted on demand on a reverse link and used for channel estimation and data transmission on a forward link. A base station selects at least one terminal for on-demand pilot transmission on the reverse link. Each selected terminal is a candidate for receiving data transmission on the forward link. The base station assigns each selected terminal with a time-frequency allocation, which may be for a wideband pilot, a narrowband pilot, or some other type of pilot. The base station receives and processes on-demand pilot transmission from each selected terminal and derives a channel estimate for the terminal based on the received pilot transmission. The base station may schedule terminals for data transmission on the forward link based on the channel estimates for all selected terminals. The base station may also process data (e.g., perform beamforming or eigensteering) for transmission to each scheduled terminal based on its channel estimate.

    摘要翻译： 飞行员根据需要在反向链路上传输，用于前向链路上的信道估计和数据传输。 基站在反向链路上选择至少一个用于按需导频发送的终端。 每个选择的终端是用于在前向链路上接收数据传输的候选者。 基站为每个选择的终端分配时间频率分配，其可以用于宽带导频，窄带导频或某种其他类型的导频。 基站从每个所选终端接收并处理按需导频传输，并根据接收到的导频传输导出终端的信道估计。 基站可以基于所有选择的终端的信道估计来安排在前向链路上进行数据传输的终端。 基站还可以基于其信道估计来处理数据（例如，执行波束成形或本征导向）以传输到每个调度的终端。

    METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING AN ACCESSPARAMETERS GROUP MESSAGE IN A WIRELESS COMMUNICATION SYSTEM
    53.
    发明申请
    METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING AN ACCESSPARAMETERS GROUP MESSAGE IN A WIRELESS COMMUNICATION SYSTEM 失效
    用于在无线通信系统中传输和接收访问组群消息的方法和装置

    公开(公告)号：US20090097437A1

    公开(公告)日：2009-04-16

    申请号：US12091463

    申请日：2006-10-27

    申请人： Arak Sutivong ,  Rajat Prakash ,  Alexei Gorokhov

    发明人： Arak Sutivong ,  Rajat Prakash ,  Alexei Gorokhov

    IPC分类号： H04W74/00

    CPC分类号： H04W52/0235 ,  H04B17/318 ,  H04B17/382 ,  H04L1/0003 ,  H04L1/0026 ,  H04L1/0028 ,  H04L1/0675 ,  H04L27/2647 ,  H04L41/0803 ,  H04L41/083 ,  H04L41/0869 ,  H04W24/10 ,  H04W88/02 ,  Y02D30/32 ,  Y02D70/1222 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/162

    摘要： A method and apparatus for transmitting an AccessParameters group message in a wireless communication system, the method comprising generating the AccessParameters group message comprising a 2 bit AccessCycle Duration field wherein the AccessCycle Duration field determines the duration of the access cycle in units of Control Segment Periods (as defined by the Physical Layer), a 5 bit AccessSequencePartition field wherein the AccessSequencePartition field indicates the partition of the access sequence space to allow the access terminal to signal pilot power and buffer status information with the access sequence, a 4 bit MaxProbesPerSequence field wherein the MaxProbesPerSequence field determines the maximum number of probe sequence that can be part of one access sequence and is set to n+1, a 4 bit ProbeRampUpStepSize field wherein the ProbeRampUpStepSize field determines the power ramp up used for probes within a probe sequence and is set to a value 0.5*(1+n)dB, a 6 bit RDCHInitialPacketFormat field wherein the RDCHInitialPacketFormat field is set to the packet format that is used on the first transmission the access terminal makes on the R-DCH after getting an access grant, a 2 bit PilotStrengthSegmentation field wherein the PilotStrengthSegmentation field comprises a PilotThreshold1 and PilotThreshold2, a 8 bit OpenLoopAdjust field wherein the OpenLoopAdjust field determines the nominal power used by access terminal in the open loop power estimate and is set to value 70+n dB and transmitting the AccessParameters group message over a communication link.

    摘要翻译： 一种用于在无线通信系统中发送AccessParameters组消息的方法和装置，所述方法包括生成包括2位AccessCycle Duration字段的AccessParameters组消息，其中AccessCycle Duration字段以控制段周期为单位确定访问周期的持续时间（ 如物理层所定义的）5比特AccessSequencePartition字段，其中AccessSequencePartition字段指示访问序列空间的分区，以允许接入终端用接入序列来信令导频功率和缓冲状态信息，4比特MaxProbesPerSequence字段，其中 MaxProbesPerSequence字段确定可以作为一个访问序列的一部分的探测序列的最大数量，并设置为n + 1，一个4位ProbeRampUpStepSize字段，其中ProbeRampUpStepSize字段确定探针序列中探针的功率上升，并设置为 值为0.5 *（1 + n）dB，6位RDCHInitialPacke tFormat字段，其中RDCHInitialPacketFormat字段被设置为在获得访问许可之后接入终端在R-DCH上进行的第一次发送时所使用的分组格式; 2比特PilotStrengthSegmentation字段，其中PilotStrengthSegmentation字段包括PilotThreshold1和PilotThreshold2， 8位OpenLoopAdjust字段，其中OpenLoopAdjust字段确定接入终端在开环功率估计中使用的标称功率，并将其设置为值70 + ndB并通过通信链路发送AccessParameters组消息。

    Antenna array calibration for wireless communication systems
    55.
    发明申请
    Antenna array calibration for wireless communication systems 审中-公开
    无线通信系统的天线阵列校准

    公开(公告)号：US20060240784A1

    公开(公告)日：2006-10-26

    申请号：US11186160

    申请日：2005-07-19

    申请人： Ayman Naguib ,  Alexei Gorokhov

    发明人： Ayman Naguib ,  Alexei Gorokhov

    IPC分类号： H04B1/38 ,  H04B7/00 ,  H04B1/04 ,  H04B1/06

    CPC分类号： H01Q3/267 ,  H04B17/21 ,  H04B17/26 ,  H04B17/318 ,  H04B17/336

    摘要： Systems and methodologies are described that facilitate calibrating an antenna array in a wireless network by generating a copy of a transmitted signal or transmitted signal from a transmit chain of an antenna and providing it to a receive chain of one or more antennas in the array for comparison to obtain a gain mismatch measurement. Such comparisons can be performed for each antenna in the array to facilitate obtaining multiple measurements, upon which gain mismatch estimations can be generated. Additionally, the array and/or individual antennas therein can be calibrated based on the mismatch estimates

    摘要翻译： 描述了通过从天线的发射链生成发送信号或发射信号的副本并将其提供给阵列中的一个或多个天线的接收链进行比较的方式来描述便于校准无线网络中的天线阵列的系统和方法 以获得增益失配测量。 可以对阵列中的每个天线执行这种比较，以便于获得多个测量，在该测量上可以产生增益失配估计。 另外，其中的阵列和/或单个天线可以基于不匹配估计来校准

    Precoding and SDMA support
    58.
    发明申请
    Precoding and SDMA support 有权
    预编码和SDMA支持

    公开(公告)号：US20070049218A1

    公开(公告)日：2007-03-01

    申请号：US11401979

    申请日：2006-04-10

    申请人： Alexei Gorokhov ,  Dhananjay Gore ,  Gwendolyn Barriac ,  Jibing Wang ,  Tamer Kadous

    发明人： Alexei Gorokhov ,  Dhananjay Gore ,  Gwendolyn Barriac ,  Jibing Wang ,  Tamer Kadous

    IPC分类号： H04B1/02 ,  H04B1/66

    CPC分类号： H04L1/0001 ,  H04B7/0417 ,  H04B7/063 ,  H04B7/0639 ,  H04B7/0663 ,  H04B7/0689 ,  H04L1/06 ,  H04W72/04

    摘要： Embodiments are described in connection with enhancing performance in a wireless communication system using codebook technology. According to an embodiment is a method for enhancing performance in a wireless communication environment. The method can include receiving a user preference for a transmission mode, associating the user preference with an entry or entries in a codebook, and assigning the user to a transmission mode corresponding to the entry or entries. The transmission mode can be one of a preceding, space division multiple access (SDMA), SDMA preceding, multiple input multiple output (MIMO), MIMO preceding, MIMO-SDMA and a diversity. Each entry can correspond to a transmission mode.

    摘要翻译： 结合增强使用码本技术的无线通信系统中的性能来描述实施例。 根据实施例是用于增强无线通信环境中的性能的方法。 该方法可以包括接收用户对传输模式的偏好，将用户偏好与码本中的条目或条目相关联，并将用户分配给与条目或条目相对应的传输模式。 传输模式可以是先前的空分多址（SDMA），前面的SDMA，多输入多输出（MIMO），先前的MIMO，MIMO-SDMA和分集之一。 每个条目可以对应于传输模式。

    Method and apparatus for providing antenna diversity in a wireless communication system
    59.
    发明申请
    Method and apparatus for providing antenna diversity in a wireless communication system 审中-公开
    在无线通信系统中提供天线分集的方法和装置

    公开(公告)号：US20070041457A1

    公开(公告)日：2007-02-22

    申请号：US11261823

    申请日：2005-10-27

    申请人： Tamer Kadous ,  Aamod Khadekar ,  Dhananjay Gore ,  Alexei Gorokhov

    发明人： Tamer Kadous ,  Aamod Khadekar ,  Dhananjay Gore ,  Alexei Gorokhov

    IPC分类号： H04K1/10

    CPC分类号： H04L5/0023 ,  H04B7/0456 ,  H04B7/061 ,  H04B7/0671 ,  H04B7/0691 ,  H04B7/0697 ,  H04L27/2602

    摘要： Transmission schemes that can flexibly achieve the desired spatial multiplexing order, spatial diversity order, and channel estimation overhead order are described. For data transmission, the assigned subcarriers and spatial multiplexing order (M) for a receiver are determined, where M≧1. For each assigned subcarrier, M virtual antennas are selected from among V virtual antennas formed with V columns of an orthonormal matrix, where V≧M. V may be selected to achieve the desired spatial diversity order and channel estimation overhead order. Output symbols are mapped to the M virtual antennas selected for each assigned subcarrier by applying the orthonormal matrix. Pilot symbols are also mapped to the V virtual antennas. The mapped symbols are provided for transmission from T transmit antennas, where T≧V. Transmission symbols are generated for the mapped symbols, e.g., based on OFDM or SC-FDMA. Different cyclic delays may be applied for the T transmit antennas to improve diversity.

    摘要翻译： 描述了可以灵活地实现期望的空间复用顺序，空间分集顺序和信道估计开销顺序的传输方案。 对于数据传输，确定接收机的分配子载波和空间复用顺序（M），其中M> = 1。 对于每个分配的子载波，从形成有正交矩阵的V列的V个虚拟天线中选择M个虚拟天线，其中V> = M。 可以选择V以实现期望的空间分集顺序和信道估计开销顺序。 通过应用正交矩阵将输出符号映射到为每个分配的副载波选择的M个虚拟天线。 导频符号也映射到V虚拟天线。 所映射的符号被提供用于从T个发射天线传输，其中T> = V。 为映射符号生成传输符号，例如，基于OFDM或SC-FDMA。 可以对T发射天线应用不同的循环延迟以改善分集。