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11. 发明申请

US20080303699A1 MIMO wireless precoding system robust to power imbalance 有权
标题翻译： MIMO无线预编码系统强大的功率不平衡
公开(公告)号：US20080303699A1
公开(公告)日：2008-12-11
申请号：US12155235
申请日：2008-05-30
申请人： Jianzhong Zhang , Cornelius Van Rensburg , Farooq Khan , Bruno Clerckx , Juho Lee , Zhouyue Pi
发明人： Jianzhong Zhang , Cornelius Van Rensburg , Farooq Khan , Bruno Clerckx , Juho Lee , Zhouyue Pi
IPC分类号： H03M7/40 , H04L27/12
CPC分类号： H04L27/2601 , H04L25/0204 , H04L25/0224 , H04L25/0242
摘要： The present invention relates to methods and apparatus for preventing power imbalance in a multiple input multiple output (MIMO) wireless precoding system. According to one aspect of the present invention, a codebook is constructed with a first subset of codewords that are constant modulus matrices, and a second subset of codewords that are non-constant modulus matrices. A mapping scheme is established between the first subset of codewords and the second subset of codewords. When a unit of user equipment feeds back a first codeword that is a non-constant modulus matrix, the Node-B may replace the first codewords with a second codeword that is selected from the first subset of codewords and that corresponds to the first codeword in accordance with the mapping scheme.
摘要翻译：本发明涉及用于防止多输入多输出（MIMO）无线预编码系统中的功率不平衡的方法和装置。根据本发明的一个方面，使用作为恒模矩阵的码字的第一子集以及作为非恒定模数矩阵的码字的第二子集构造码本。在码字的第一子集和码字的第二子集之间建立映射方案。当用户设备的单元反馈作为非恒定模数矩阵的第一码字时，节点B可以用从码字的第一子集中选择并且对应于第一码字的第二码字来替换第一码字，按照映射方案。

12. 发明申请

US20080298482A1 Multi-user MIMO feedback and transmission in a wireless communication system 有权
标题翻译：无线通信系统中的多用户MIMO反馈和传输
公开(公告)号：US20080298482A1
公开(公告)日：2008-12-04
申请号：US11979266
申请日：2007-10-31
申请人： Cornelius Van Rensburg , Jianzhong Zhang , Farooq Khan
发明人： Cornelius Van Rensburg , Jianzhong Zhang , Farooq Khan
IPC分类号： H04L27/28
CPC分类号： H04B7/0639 , H04B7/0478 , H04B7/065 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L1/0029 , H04L1/06 , H04L25/03343 , H04L27/2601 , H04L2001/0093
摘要： The present invention provides a method for feedback and transmission of multi-user (MU) multiple input multiple output (MIMO) in a wireless communication system. The method includes steps of selecting subset codebook or full code book based on traffic load of a base station, and broadcasting the selected codebook to user equipments. In high traffic load, subset codebook is selected, and in low traffic load, full codebook is selected. User stations calculated a channel quality indicator of a spatial codeword vector that is included in the selected codebook. Information of the maximum channel quality indicator is sent to the base station together with a precoder of the user equipment. The base station selects user equipments based on the information of the maximum channel quality indicator and precoder, and transmits precoder signal and data signal to the user equipments. The present invention also provides a system for the base station that causes the base station to perform the above mentioned operations.
摘要翻译：本发明提供了一种在无线通信系统中反馈和传输多用户（MU）多输入多输出（MIMO）的方法。该方法包括基于基站的业务负载选择子码本或全码本，并将所选码本广播给用户设备的步骤。在高流量负载下，选择子码本，在低流量负载下，选择完整的码本。用户站计算包含在所选码本中的空间码字矢量的信道质量指示符。最大信道质量指示符的信息与用户设备的预编码器一起发送到基站。基站根据最大信道质量指示符和预编码器的信息选择用户设备，并向用户设备发送预编码信号和数据信号。本发明还提供一种使基站执行上述操作的基站的系统。

13. 发明申请

US20080151831A1 Orthogonal repetition and hybrid ARQ scheme 审中-公开
标题翻译：正交重复和混合ARQ方案
公开(公告)号：US20080151831A1
公开(公告)日：2008-06-26
申请号：US11806660
申请日：2007-06-01
申请人： Farooq Khan , Cornelius Van Rensburg , Zhouyue Pi , Jiann-An Tsai , Yinong Ding
发明人： Farooq Khan , Cornelius Van Rensburg , Zhouyue Pi , Jiann-An Tsai , Yinong Ding
IPC分类号： H04Q7/30
CPC分类号： H04L1/0656 , H04L1/0668 , H04L1/1812 , H04L1/1845 , H04L5/0007 , H04L5/0016 , H04L5/0023
摘要： A multi-user, multiple input, multiple output network and process for transmitting data in a communication system encompassing multiple users, contemplates the steps of: a first user transmitting a first transmission frame to a base transceiver station while a second user simultaneously transmits a third transmission frame to the base station; the first and second users simultaneously transmit a second transmission frame and a fourth transmission frames respectively to the base station, with the second transmission frame being an orthogonally spread version of the first transmission frame, and the fourth transmission frame being an orthogonally spread version of the second transmission frame.
摘要翻译：用于在包含多个用户的通信系统中传输数据的多用户，多输入，多输出网络和过程考虑了以下步骤：第一用户将第一传输帧发送到基站收发器，而第二用户同时发送第三个传输帧到基站; 第一和第二用户同时将第二传输帧和第四传输帧发送到基站，其中第二传输帧是第一传输帧的正交扩展版本，第四传输帧是正交扩展版本的第二传输帧。

14. 发明授权

US08325839B2 Simple MIMO precoding codebook design for a MIMO wireless communications system 失效
标题翻译：用于MIMO无线通信系统的简单MIMO预编码码本设计
公开(公告)号：US08325839B2
公开(公告)日：2012-12-04
申请号：US12155835
申请日：2008-06-10
申请人： Cornelius Van Rensburg , Jianzhong Zhang , Farooq Khan , Zhouyue Pi
发明人： Cornelius Van Rensburg , Jianzhong Zhang , Farooq Khan , Zhouyue Pi
IPC分类号： H04B7/02
CPC分类号： H04L25/0204 , H04L1/0065 , H04L1/0656 , H04L1/0675 , H04L5/0023 , H04L5/0053 , H04L5/006 , H04L25/0224 , H04L25/0242 , H04L25/03159 , H04L2025/03414 , H04L2025/03426 , H04L2025/03802
摘要： The present invention relates to methods and apparatus for establishing a precoding codebook for a Multiple Input Multiple Output (MIMO) wireless communication system. The precoding codebook includes a plurality of codebook entries. Each codebook entry includes four sets of vectors for four respective corresponding transmission ranks. The vectors may be predetermined, or generated from source unitary matrices. In addition, the codebook is fully nested.
摘要翻译：本发明涉及用于建立多输入多输出（MIMO）无线通信系统的预编码码本的方法和装置。预编码码本包括多个码本条目。每个码本条目包括用于四个相应的相应传输等级的四组向量。矢量可以是预定的，或者从源酉矩阵生成。另外，码本是完全嵌套的。

15. 发明授权

US07649831B2 Multi-user MIMO feedback and transmission in a wireless communication system 有权
标题翻译：无线通信系统中的多用户MIMO反馈和传输
公开(公告)号：US07649831B2
公开(公告)日：2010-01-19
申请号：US11979266
申请日：2007-10-31
申请人： Cornelius Van Rensburg , Jianzhong Zhang , Farooq Khan
发明人： Cornelius Van Rensburg , Jianzhong Zhang , Farooq Khan
IPC分类号： H04J11/00
CPC分类号： H04B7/0639 , H04B7/0478 , H04B7/065 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L1/0029 , H04L1/06 , H04L25/03343 , H04L27/2601 , H04L2001/0093
摘要： The present invention provides a method for feedback and transmission of multi-user (MU) multiple input multiple output (MIMO) in a wireless communication system. The method includes steps of selecting subset codebook or full code book based on traffic load of a base station, and broadcasting the selected codebook to user equipments. In high traffic load, subset codebook is selected, and in low traffic load, full codebook is selected. User stations calculated a channel quality indicator of a spatial codeword vector that is included in the selected codebook. Information of the maximum channel quality indicator is sent to the base station together with a precoder of the user equipment. The base station selects user equipments based on the information of the maximum channel quality indicator and precoder, and transmits precoder signal and data signal to the user equipments. The present invention also provides a system for the base station that causes the base station to perform the above mentioned operations.
摘要翻译：本发明提供了一种在无线通信系统中反馈和传输多用户（MU）多输入多输出（MIMO）的方法。该方法包括基于基站的业务负载选择子码本或全码本，并将所选码本广播给用户设备的步骤。在高流量负载下，选择子码本，在低流量负载下，选择完整的码本。用户站计算包含在所选码本中的空间码字矢量的信道质量指示符。最大信道质量指示符的信息与用户设备的预编码器一起发送到基站。基站根据最大信道质量指示符和预编码器的信息选择用户设备，并向用户设备发送预编码信号和数据信号。本发明还提供一种使基站执行上述操作的基站的系统。

16. 发明申请

US20090080549A1 Efficient MIMO precoding feedback scheme 有权
标题翻译：高效MIMO预编码反馈方案
公开(公告)号：US20090080549A1
公开(公告)日：2009-03-26
申请号：US12216422
申请日：2008-07-03
申请人： Farooq Khan , Zhouyue Pl , Cornelius Van Rensburg , Jianzhong Zhang
发明人： Farooq Khan , Zhouyue Pl , Cornelius Van Rensburg , Jianzhong Zhang
IPC分类号： H04K1/10
CPC分类号： H04L25/03343 , H04B7/0417 , H04B7/0478 , H04L5/0007 , H04L5/0053 , H04L5/006 , H04L25/0204 , H04L25/0228 , H04L2025/03414 , H04L2025/03426
摘要： Methods and apparatus for efficiently feeding back preceding information in a multiple input multiple output (MIMO) system. A codebook including a plurality of codebook entries is constructed. A plurality of subsets of codebook entries are defined for the codebook. Each subset includes a plurality of codebook entries. A subset of codebook entries is selected for precoding data in dependence upon a channel condition, and a codebook entry is selected from the subset. Then, a subset index corresponding to the selected subset, and a codebook entry index corresponding to the selected codebook entry within the selected subset, is transmitted as feedback information.
摘要翻译：用于在多输入多输出（MIMO）系统中有效地反馈先前信息的方法和装置。构造包括多个码本条目的码本。为码本定义了多个码本条目子集。每个子集包括多个码本条目。根据信道条件选择码本条目的子集用于预编码数据，并从子集中选择码本条目。然后，作为反馈信息发送对应于所选择的子集的子集索引以及与所选择的子集内的所选码本条目相对应的码本条目索引。

17. 发明申请

US20080146166A1 Method and system for providing an interference cancellation in a wireless communication system 有权
标题翻译：在无线通信系统中提供干扰消除的方法和系统
公开(公告)号：US20080146166A1
公开(公告)日：2008-06-19
申请号：US11882310
申请日：2007-07-31
申请人： Farooq Khan , Cornelius Van Rensburg , Zhouyue Pi , Jiann-An Tsai , Yinong Ding
发明人： Farooq Khan , Cornelius Van Rensburg , Zhouyue Pi , Jiann-An Tsai , Yinong Ding
IPC分类号： H04B1/44
CPC分类号： H04B7/0682 , H04B7/0452 , H04L5/0007 , H04L5/0023 , H04L5/0041 , H04L5/04 , H04L2025/03426
摘要： A system, a receiver apparatus, a transmitter apparatus and a method for inter-user interference cancellation when simultaneous transmissions from two wireless users to the same base station are repeated using the same time-frequency resource. The percentage of interference cancellation is pre-set and phase shifts of the first and repeated transmitted symbols for each mobile user are determined in accordance with this pre-set percentage. The receiver uses a pre-determined technique for estimating the received symbols in accordance with the pre-set percentage and phase shifts.
摘要翻译：使用相同的时间 - 频率资源重复使用从两个无线用户到同一基站的同时传输时的系统，接收装置，发送装置和用于干扰消除的方法。干扰消除的百分比是预设的，并且根据该预设百分比来确定每个移动用户的第一个和重复发送的符号的相移。接收机使用预定技术来根据预设的百分比和相移来估计接收到的符号。

18. 发明授权

US08989285B2 Efficient MIMO precoding feedback scheme 有权
公开(公告)号：US08989285B2
公开(公告)日：2015-03-24
申请号：US12216422
申请日：2008-07-03
申请人： Farooq Khan , Zhouyue Pi , Cornelius Van Rensburg , Jianzhong Zhang
发明人： Farooq Khan , Zhouyue Pi , Cornelius Van Rensburg , Jianzhong Zhang
IPC分类号： H04K1/10 , H04L27/28 , H04L25/03 , H04B7/04 , H04L5/00 , H04L25/02
CPC分类号： H04L25/03343 , H04B7/0417 , H04B7/0478 , H04L5/0007 , H04L5/0053 , H04L5/006 , H04L25/0204 , H04L25/0228 , H04L2025/03414 , H04L2025/03426
摘要： Methods and apparatus for efficiently feeding back preceding information in a multiple input multiple output (MIMO) system. A codebook including a plurality of codebook entries is constructed. A plurality of subsets of codebook entries are defined for the codebook. Each subset includes a plurality of codebook entries. A subset of codebook entries is selected for precoding data in dependence upon a channel condition, and a codebook entry is selected from the subset. Then, a subset index corresponding to the selected subset, and a codebook entry index corresponding to the selected codebook entry within the selected subset, is transmitted as feedback information.

19. 发明授权

US08560018B2 Flexible sectorization in wireless communication systems 有权
标题翻译：无线通信系统中的灵活扇区化
公开(公告)号：US08560018B2
公开(公告)日：2013-10-15
申请号：US11556855
申请日：2006-11-06
申请人： Farooq Khan , Cornelius Van Rensburg
发明人： Farooq Khan , Cornelius Van Rensburg
IPC分类号： H04W36/00 , H04B1/38 , H04M1/00
CPC分类号： H04B7/0491 , H04W16/04 , H04W16/24 , H04W16/30
摘要： A system, apparatus and method for flexible sectorization in a wireless communication system are disclosed. For example, a system for flexible sectorization in a wireless communication system is disclosed. The system includes a base communication unit, a plurality of first communication link sector generation units coupled to the base communication unit, and at least a second communication link sector generation unit coupled to the base communication unit. Each communication link sector generation unit is configured to generate at least one associated sector for radio coverage, and the number of first communication link sector generation units is not equal to the number of second communication link sector generation units.
摘要翻译：公开了一种用于无线通信系统中的灵活扇区化的系统，装置和方法。例如，公开了一种用于无线通信系统中的灵活扇区化的系统。该系统包括基站通信单元，耦合到基站通信单元的多个第一通信链路扇区生成单元，以及耦合到基站通信单元的至少第二通信链路扇区生成单元。每个通信链路扇区生成单元被配置为生成用于无线覆盖的至少一个相关联的扇区，并且第一通信链路扇区生成单元的数量不等于第二通信链路扇区生成单元的数量。

20. 发明授权

US08331342B2 Apparatus and method for switching between single user and multi-user MIMO operation in a wireless network 有权
标题翻译：用于在无线网络中的单用户和多用户MIMO操作之间进行切换的装置和方法
公开(公告)号：US08331342B2
公开(公告)日：2012-12-11
申请号：US11738074
申请日：2007-04-20
申请人： Farooq Khan , Cornelius Van Rensburg
发明人： Farooq Khan , Cornelius Van Rensburg
IPC分类号： H04B7/208
CPC分类号： H04L1/1657 , H04B7/0417 , H04B7/0452 , H04B7/0632 , H04B7/0689 , H04L1/0003 , H04L1/0009 , H04L1/0015 , H04L1/0026 , H04L1/0028 , H04L1/06 , H04L1/1812 , H04L1/1835 , H04L1/1887 , H04W28/18
摘要： A base station for use in a wireless network, wherein the base station transmits in a downlink to a plurality of subscriber stations using a plurality of antennas according to a multiple input, multiple-output (MIMO) protocol. During a first downlink subframe, the base station operates in single-user MIMO mode in which the base station transmits a first data subpacket to a first subscriber station using a first antenna and transmits a second data subpacket to the first subscriber station using a second antenna. During a second downlink subframe following the first downlink subframe, the base station operates in multi-user MIMO mode in which the base station transmits a third data subpacket to the first subscriber station using the first antenna and transmits a fourth data subpacket to a second subscriber station using the second antenna.
摘要翻译：一种用于无线网络的基站，其中所述基站根据多输入多输出（MIMO）协议使用多个天线在下行链路中向多个用户台发送。在第一下行链路子帧期间，基站以单用户MIMO模式操作，其中基站使用第一天线向第一用户站发送第一数据子分组，并使用第二天线向第一用户站发送第二数据子分组。在第一下行链路子帧之后的第二下行链路子帧期间，基站以多用户MIMO模式操作，其中基站使用第一天线向第一用户站发送第三数据子分组，并将第四数据子分组发送到第二用户站使用第二个天线。

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