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公开(公告)号：US08885744B2
公开(公告)日：2014-11-11
申请号：US11937472
申请日：2007-11-08
申请人： Tamer Kadous , Naga Bhushan , Alexei Gorokhov
发明人： Tamer Kadous , Naga Bhushan , Alexei Gorokhov
CPC分类号： H04L1/0026 , H04B7/0417 , H04B7/0632 , H04L5/0023 , H04L5/0048 , H04L5/006 , H04L5/0071 , H04L5/0091 , H04L25/0228 , H04L25/0242 , H04L25/03343 , H04L2025/03426
摘要： Systems and methodologies are described that facilitate cycling across antennas for channel quality information (CQI) computation and data transmission in a multiple-input multiple-output (MIMO) wireless communication environment. Pilots can be obtained by a wireless terminal. Further, virtual antennas that can be supported by a channel can be identified based upon an analysis of the pilots. Moreover, CQI computations can be effectuated for each of the supported virtual antennas; thereafter, the CQI data can be sent to a base station for data transmission scheduling. Additionally, the base station can schedule transmission based upon the CQI data and/or fairness considerations. When scheduled, data transmission can occur by cycling across the supported virtual antennas.
摘要翻译： 描述了有助于在多输入多输出（MIMO）无线通信环境中跨越天线进行信道质量信息（CQI）计算和数据传输的系统和方法。 飞行员可以通过无线终端获得。 此外，可以基于对导频的分析来识别可以由信道支持的虚拟天线。 此外，可以为每个所支持的虚拟天线实现CQI计算; 此后，CQI数据可以被发送到用于数据传输调度的基站。 此外，基站可以基于CQI数据和/或公平性考虑来调度传输。 当调度时，可以通过在支持的虚拟天线之间循环来进行数据传输。
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公开(公告)号：US08391196B2
公开(公告)日：2013-03-05
申请号：US11923761
申请日：2007-10-25
申请人： Alexei Gorokhov , Mohammad J. Borran , Avneesh Agrawal , Naga Bhushan , Tamer Kadous , Ayman Fawzy Naguib
发明人： Alexei Gorokhov , Mohammad J. Borran , Avneesh Agrawal , Naga Bhushan , Tamer Kadous , Ayman Fawzy Naguib
IPC分类号： G08C17/00
CPC分类号： H04W52/30 , H04L5/0007 , H04L5/0037 , H04L5/0058 , H04W52/04 , H04W72/06 , Y02B30/50
摘要： Systems and methodologies are described that facilitate mitigating effect of non-linear distortion from a power amplifier on a spectral mask margin. Power limit indications can be analyzed in scheduling mobile devices. Mobile devices with power limits can be scheduled on inner subbands. The power limits can be based at least in part on power amplifier headroom information. Other mobile devices can employ remaining portions of an allocated spectrum. Further, mobile devices can evaluate and establish a power amplifier backoff based upon the subband scheduling.
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公开(公告)号：US20080130589A1
公开(公告)日：2008-06-05
申请号：US11923761
申请日：2007-10-25
申请人： Alexei Gorokhov , Mohammad J. Borran , Avneesh Agrawal , Naga Bhushan , Tamer Kadous , Ayman Fawzy Naguib
发明人： Alexei Gorokhov , Mohammad J. Borran , Avneesh Agrawal , Naga Bhushan , Tamer Kadous , Ayman Fawzy Naguib
IPC分类号： H04J3/00
CPC分类号： H04W52/30 , H04L5/0007 , H04L5/0037 , H04L5/0058 , H04W52/04 , H04W72/06 , Y02B30/50
摘要： Systems and methodologies are described that facilitate mitigating effect of non-linear distortion from a power amplifier on a spectral mask margin. Power limit indications can be analyzed in scheduling mobile devices. Mobile devices with power limits can be scheduled on inner subbands. The power limits can be based at least in part on power amplifier headroom information. Other mobile devices can employ remaining portions of an allocated spectrum. Further, mobile devices can evaluate and establish a power amplifier backoff based upon the subband scheduling.
摘要翻译： 描述了有助于减轻来自功率放大器的非线性失真对光谱掩模余量的影响的系统和方法。 功率限制指示可以在调度移动设备中进行分析。 具有功率限制的移动设备可以在内部子带上进行调度。 功率限制可以至少部分地基于功率放大器余量信息。 其他移动设备可以使用所分配频谱的剩余部分。 此外，移动设备可以基于子带调度来评估和建立功率放大器的退避。
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公开(公告)号：US20080117999A1
公开(公告)日：2008-05-22
申请号：US11937472
申请日：2007-11-08
申请人： Tamer Kadous , Naga Bhushan , Alexei Gorokhov
发明人： Tamer Kadous , Naga Bhushan , Alexei Gorokhov
IPC分类号： H04L1/02
CPC分类号： H04L1/0026 , H04B7/0417 , H04B7/0632 , H04L5/0023 , H04L5/0048 , H04L5/006 , H04L5/0071 , H04L5/0091 , H04L25/0228 , H04L25/0242 , H04L25/03343 , H04L2025/03426
摘要： Systems and methodologies are described that facilitate cycling across antennas for channel quality information (CQI) computation and data transmission in a multiple-input multiple-output (MIMO) wireless communication environment. Pilots can be obtained by a wireless terminal. Further, virtual antennas that can be supported by a channel can be identified based upon an analysis of the pilots. Moreover, CQI computations can be effectuated for each of the supported virtual antennas; thereafter, the CQI data can be sent to a base station for data transmission scheduling. Additionally, the base station can schedule transmission based upon the CQI data and/or fairness considerations. When scheduled, data transmission can occur by cycling across the supported virtual antennas.
摘要翻译： 描述了有助于在多输入多输出（MIMO）无线通信环境中跨越天线进行信道质量信息（CQI）计算和数据传输的系统和方法。 飞行员可以通过无线终端获得。 此外，可以基于对导频的分析来识别可以由信道支持的虚拟天线。 此外，可以为每个所支持的虚拟天线实现CQI计算; 此后，CQI数据可以被发送到用于数据传输调度的基站。 此外，基站可以基于CQI数据和/或公平性考虑来调度传输。 当调度时，可以通过在支持的虚拟天线之间循环来进行数据传输。
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5.发明授权公开(公告)号：US09860033B2
公开(公告)日：2018-01-02
申请号：US13271113
申请日：2011-10-11
IPC分类号： H04L5/00 , H04L27/26 , H04B7/04 , H04B7/06 , H04B7/0456
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.
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6.发明申请METHOD AND APPARATUS FOR ANTENNA DIVERSITY IN MULTI-INPUT MULTI-OUTPUT COMMUNICATION SYSTEMS 有权多输入多输出通信系统中天线多样性的方法与装置公开(公告)号：US20120120925A1
公开(公告)日：2012-05-17
申请号：US13271121
申请日：2011-10-11
IPC分类号： H04W72/04
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，从由正交矩阵的V列形成的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。 映射的符号被提供用于从T发射天线发射，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。
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7.发明授权公开(公告)号：US07903615B2
公开(公告)日：2011-03-08
申请号：US11869589
申请日：2007-10-09
申请人： Alexei Gorokhov , Tamer Kadous
发明人： Alexei Gorokhov , Tamer Kadous
IPC分类号： H04B7/216
CPC分类号： H04B7/0697 , H04L1/1685 , H04L2001/0093 , H04W16/28 , H04W72/12
摘要： Space division multiple access channelization is provided that includes scheduling transmission for two or more terminals and utilizing different code offsets that correspond to different sub-trees. The transmissions can be scheduled on overlapping frequency resources for overlapping time periods on different spatial resources. The pilot code offsets provide different pilot signatures so that the pilot transmissions do not overlap. The overlapping frequency resources can partially overlap or completely overlap.
摘要翻译： 提供了空分多址信道化，其包括对两个或更多个终端进行调度传输，并利用与不同子树相对应的不同的码偏移。 可以在重叠的频率资源上调度传输，以便在不同的空间资源上重叠时间段。 导频代码偏移提供不同的导频签名，使得导频传输不重叠。 重叠频率资源可能部分重叠或完全重叠。
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公开(公告)号：US20060223449A1
公开(公告)日：2006-10-05
申请号：US11261836
申请日：2005-10-27
申请人： Hemanth Sampath , Alexei Gorokhov , Aamod Khandekar , Edward Teague , David Julian , Tamer Kadous
发明人： Hemanth Sampath , Alexei Gorokhov , Aamod Khandekar , Edward Teague , David Julian , Tamer Kadous
CPC分类号： H04L1/0028 , H04L1/0026 , H04L5/0053 , H04L25/0204 , H04L25/03343 , H04L2025/03414 , H04L2025/03426 , H04L2025/03802
摘要： Methods and apparatuses are disclosed for providing flexible channel information feedback. In some cases this may be according to reporting types assigned by one or more sectors, with different reporting types for each sector. In other cases, a reporting mode is determined to determine the reporting types to be utilized.
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公开(公告)号：US09408220B2
公开(公告)日：2016-08-02
申请号：US11261822
申请日：2005-10-27
CPC分类号： H04W72/08 , H04B1/7143 , H04B7/043 , H04B7/0632 , H04B7/065 , H04B7/0689 , H04B7/0697 , H04L1/0026 , H04L1/0027 , H04L1/20 , H04L5/0023 , H04L5/0037 , H04L5/0051 , H04L5/0057 , H04L5/006
摘要： Apparatuses and methodologies are described that enhance performance in a wireless communication system using beamforming transmissions. According to one aspect, the channel quality is monitored. Channel quality indicators can be used to select a scheduling technique, such as space division multiplexing (SDM), multiple-input multiple output (MIMO) transmission and opportunistic beamforming for one or more user devices. In addition, the CQI can be used to determine the appropriate beam assignment or to update the beam pattern.
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10.发明授权Systems and methods for beamforming feedback in multi antenna communication systems 有权多天线通信系统中波束成形反馈的系统和方法公开(公告)号：US09154211B2
公开(公告)日：2015-10-06
申请号：US11233844
申请日：2005-09-21
CPC分类号： H04B7/0634 , H04B7/0417 , H04B7/0617 , H04B7/063 , H04B7/0632 , H04B7/0639 , H04B7/0645
摘要： Methods and apparatuses are disclosed that determine whether to feedback, and the amount of feedback, with respect to eigenbeam information based upon channel resources. Additionally, methods and apparatuses are disclosed that determine whether to feedback, and the amount of feedback, with respect to eigenbeam information based upon channel information and changes in channel information.
摘要翻译： 公开了基于信道资源来确定是否反馈和相对于本征光束信息的反馈量的方法和装置。 此外，公开了基于频道信息和频道信息的改变来确定是否反馈和相对于特征波束信息的反馈量的方法和装置。
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