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1. 发明授权

US08254487B2 Method and apparatus of codebook-based single-user closed-loop transmit beamforming (SU-CLTB) for OFDM wireless systems 有权
标题翻译：用于OFDM无线系统的基于码本的单用户闭环发射波束成形（SU-CLTB）的方法和装置
公开(公告)号：US08254487B2
公开(公告)日：2012-08-28
申请号：US12149108
申请日：2008-04-25
申请人： Jiann-An Tsai , Cornelius Van Rensburg , Jianzhong Zhang
发明人： Jiann-An Tsai , Cornelius Van Rensburg , Jianzhong Zhang
IPC分类号： H04B7/02 , H04L1/02
CPC分类号： H04B1/59 , H04B7/0417 , H04B7/0469 , H04B7/0617 , H04B7/0632 , H04B7/0641 , H04B7/0684 , H04B7/10 , H04L27/2601
摘要： A method includes broadcasting, at a transmitter, messages comprising antenna configuration, antenna spacing and a number of antenna of the transmitter and reference signals; generating, at a receiver, a codebook comprising a plurality of antenna beams based on the broadcasted messages; receiving, at the receiver, the broadcasted reference signals; selecting, at the receiver, an antenna beam among the plurality of antenna beams within the codebook in dependence upon a predetermined performance criteria of a data communication system and in dependence upon the broadcasted reference signals; feedbacking to the transmitter, at the receiver, information comprising the antenna beam selected by the receiver; optimizing, at the transmitter, a beamforming process by utilizing the feedback information from the receiver; transmitting, at the transmitter, data signals by utilizing the optimized beamforming process; and receiving and processing, at the receiver, the data signals in dependence upon the selected antenna beams within the codebook.
摘要翻译：一种方法包括在发射机处广播包括天线配置，天线间隔和发射机和参考信号的天线数量的消息; 在接收机处，基于广播的消息，生成包括多个天线波束的码本; 在接收机处接收广播的参考信号; 根据数据通信系统的预定性能标准，并根据广播的参考信号，在接收机中选择码本内的多个天线波束之间的天线波束; 在接收机处反馈给发射机，包括由接收机选择的天线波束的信息; 在发射机处利用来自接收机的反馈信息来优化波束成形过程; 通过利用优化的波束形成过程在发射机发射数据信号; 并且在接收机处根据码本内的所选择的天线波束接收和处理数据信号。

2. 发明申请

US20090041150A1 Method and apparatus of codebook-based single-user closed-loop transmit beamforming (SU-CLTB) for OFDM wireless systems 有权
标题翻译：用于OFDM无线系统的基于码本的单用户闭环发射波束成形（SU-CLTB）的方法和装置
公开(公告)号：US20090041150A1
公开(公告)日：2009-02-12
申请号：US12149108
申请日：2008-04-25
申请人： Jiann-An Tsai , Cornelius Van Rensburg , Jianzhong Zhang
发明人： Jiann-An Tsai , Cornelius Van Rensburg , Jianzhong Zhang
IPC分类号： H04L27/02 , H04B7/02 , H04J11/00
CPC分类号： H04B1/59 , H04B7/0417 , H04B7/0469 , H04B7/0617 , H04B7/0632 , H04B7/0641 , H04B7/0684 , H04B7/10 , H04L27/2601
摘要： A method includes broadcasting, at a transmitter, messages comprising antenna configuration, antenna spacing and a number of antenna of the transmitter and reference signals; generating, at a receiver, a codebook comprising a plurality of antenna beams based on the broadcasted messages; receiving, at the receiver, the broadcasted reference signals; selecting, at the receiver, an antenna beam among the plurality of antenna beams within the codebook in dependence upon a predetermined performance criteria of a data communication system and in dependence upon the broadcasted reference signals; feedbacking to the transmitter, at the receiver, information comprising the antenna beam selected by the receiver; optimizing, at the transmitter, a beamforming process by utilizing the feedback information from the receiver; transmitting, at the transmitter, data signals by utilizing the optimized beamforming process; and receiving and processing, at the receiver, the data signals in dependence upon the selected antenna beams within the codebook.
摘要翻译：一种方法包括在发射机处广播包括天线配置，天线间隔和发射机和参考信号的天线数量的消息; 在接收机处，基于广播的消息，生成包括多个天线波束的码本; 在接收机处接收广播的参考信号; 根据数据通信系统的预定性能标准，并根据广播的参考信号，在接收机中选择码本内的多个天线波束之间的天线波束; 在接收机处反馈给发射机，包括由接收机选择的天线波束的信息; 在发射机处利用来自接收机的反馈信息来优化波束成形过程; 通过利用优化的波束形成过程在发射机发射数据信号; 并且在接收机处根据码本内的所选择的天线波束接收和处理数据信号。

3. 发明申请

US20080039030A1 Apparatus and Method For Transmit Diversity And Beamforming In A Wireless Network 有权
标题翻译：无线网络中发射分集和波束成形的装置和方法
公开(公告)号：US20080039030A1
公开(公告)日：2008-02-14
申请号：US11779052
申请日：2007-07-17
申请人： Farooq Khan , Cornelius Van Rensburg , Jiann-An Tsai
发明人： Farooq Khan , Cornelius Van Rensburg , Jiann-An Tsai
IPC分类号： H04B1/02
CPC分类号： H04B7/0689 , H04B7/0617 , H04B7/0671
摘要： A base station for use in a wireless network communicating with a plurality of subscriber stations. The base station transmits in a downlink channel to a first subscriber station using a plurality of transmit antennas. The base station transmits to the first subscriber station using either a transmit diversity scheme or a beamforming scheme according to the amount of correlation between the transmit antennas observed at the first subscriber station. The base station also transmits to the first subscriber station using a cyclic delay diversity scheme having either zero delay or non-zero delay according to the amount of antenna/channel correlation observed at the first subscriber station.
摘要翻译：一种用于与多个用户台通信的无线网络中的基站。基站使用多个发射天线在下行链路信道中向第一用户台发送。根据在第一用户台观测到的发射天线之间的相关量，基站使用发射分集方案或波束成形方案向第一用户台发送。根据在第一用户台观测到的天线/信道相关量，基站还使用具有零延迟或非零延迟的循环延迟分集方案向第一用户台发送。

4. 发明授权

US07885660B2 Method and system for performing a soft handoff in an OFDMA wireless network 有权
标题翻译：用于在OFDMA无线网络中执行软切换的方法和系统
公开(公告)号：US07885660B2
公开(公告)日：2011-02-08
申请号：US11215330
申请日：2005-08-30
申请人： Cornelius Van Rensburg , Yinong Ding , Jiann-An Tsai
发明人： Cornelius Van Rensburg , Yinong Ding , Jiann-An Tsai
IPC分类号： H04Q7/20
CPC分类号： H04W36/18 , H04W36/30
摘要： A method for performing a soft handoff for a mobile station from a source base station to a target base station in an Orthogonal Frequency-Division Multiple Access (OFDMA) wireless network that is capable of communicating with a plurality of mobile stations in a coverage area of the OFDMA wireless network is provided. The method includes determining whether a relative delay between receipt of a source pilot signal from a source base station and receipt of a target pilot signal from a target base station is less than a downlink coherence time. When the relative delay is less than the downlink coherence time, the soft handoff is performed.
摘要翻译：一种用于在正交频分多址（OFDMA）无线网络中从源基站到目标基站执行移动台的软越区切换的方法，其能够与覆盖区域中的多个移动站进行通信提供了OFDMA无线网络。该方法包括确定从源基站接收源导频信号和从目标基站接收目标导频信号之间的相对延迟是否小于下行链路相干时间。当相对延迟小于下行链路相干时间时，执行软切换。

5. 发明授权

US07536205B2 Apparatus and method for downlink spatial division multiple access scheduling in a wireless network 失效
标题翻译：用于无线网络中的下行链路空分多址调度的装置和方法
公开(公告)号：US07536205B2
公开(公告)日：2009-05-19
申请号：US11128772
申请日：2005-05-13
申请人： Cornelius Van Rensburg , Jiann-An Tsai , Lai King Tee
发明人： Cornelius Van Rensburg , Jiann-An Tsai , Lai King Tee
IPC分类号： H04M1/00
CPC分类号： H04W72/1273 , H04B7/0617 , H04W52/346 , H04W72/046 , H04W72/1247
摘要： A base station for communicating with mobile stations in a coverage area of the wireless network. The base station comprises: 1) a transceiver for transmitting downlink OFDMA signals to each mobile station; 2) an antenna array for transmitting the downlink OFDMA signals to the mobile stations using spatially directed beams; and 3) an SDMA scheduling controller for scheduling downlink transmissions to the mobile stations. The SDMA scheduling controller determines a first mobile station having a highest priority and schedules the first mobile station for downlink transmission in a particular time-frequency slot. The SDMA scheduling controller then determines additional mobile stations that are spatially uncorrelated with the first mobile station, as well as each other, and schedules the additional mobile stations for downlink transmission in that particular time-frequency slot according to priority.
摘要翻译：用于与无线网络的覆盖区域中的移动台进行通信的基站。该基站包括：1）用于向每个移动台发送下行OFDMA信号的收发信机; 2）天线阵列，用于使用空间定向波束将下行链路OFDMA信号发射到移动台; 以及3）用于调度到移动站的下行链路传输的SDMA调度控制器。 SDMA调度控制器确定具有最高优先级的第一移动台，并且在特定的时隙中调度第一移动台进行下行链路传输。然后，SDMA调度控制器确定与第一移动站空间上不相关的另外的移动站，以及彼此之间，并根据优先级调度附加的移动站用于该特定时隙中的下行链路传输。

6. 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。

7. 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。

8. 发明授权

US07904034B2 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：US07904034B2
公开(公告)日：2011-03-08
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： H04B1/04
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。

9. 发明申请

US20070049279A1 Method and system for performing a soft handoff in an OFDMA wireless network 有权
标题翻译：用于在OFDMA无线网络中执行软切换的方法和系统
公开(公告)号：US20070049279A1
公开(公告)日：2007-03-01
申请号：US11215330
申请日：2005-08-30
申请人： Cornelius Van Rensburg , Yinong Ding , Jiann-An Tsai
发明人： Cornelius Van Rensburg , Yinong Ding , Jiann-An Tsai
IPC分类号： H04Q7/20
CPC分类号： H04W36/18 , H04W36/30
摘要： A method for performing a soft handoff for a mobile station from a source base station to a target base station in an Orthogonal Frequency-Division Multiple Access (OFDMA) wireless network that is capable of communicating with a plurality of mobile stations in a coverage area of the OFDMA wireless network is provided. The method includes determining whether a relative delay between receipt of a source pilot signal from a source base station and receipt of a target pilot signal from a target base station is less than a downlink coherence time. When the relative delay is less than the downlink coherence time, the soft handoff is performed.
摘要翻译：一种用于在正交频分多址（OFDMA）无线网络中从源基站到目标基站执行移动台的软越区切换的方法，其能够与覆盖区域中的多个移动站进行通信提供了OFDMA无线网络。该方法包括确定从源基站接收源导频信号和从目标基站接收目标导频信号之间的相对延迟是否小于下行链路相干时间。当相对延迟小于下行链路相干时间时，执行软切换。

10. 发明授权

US08401107B2 Transmit methods with delay diversity and space-frequency diversity 有权
公开(公告)号：US08401107B2
公开(公告)日：2013-03-19
申请号：US13448090
申请日：2012-04-16
申请人： Jianzhong Zhang , Cornelius Van Rensburg , Farooq Khan , Yinong Ding
发明人： Jianzhong Zhang , Cornelius Van Rensburg , Farooq Khan , Yinong Ding
IPC分类号： H04B7/02 , H04B7/06 , H04B7/08 , H04L27/26 , H04L1/02
CPC分类号： H04L1/0606 , H04B7/0456 , H04B7/0486 , H04B7/0671 , H04L1/0668 , H04L1/08 , H04L1/1819 , H04L5/0023 , H04L25/03898 , H04L27/2626
摘要： In this invention, several open-loop solutions that encompass the small delay CDD codeword cycling, codeword cycling between different re-transmissions of both small and large delay CDD are proposed. In addition, an open-loop codeword cycling method for SFBC+FSTD scheme, as well as its extension to SFBC+FSTD based HARQ, are proposed. In one method, a plurality of information bits are encoded, scrambled and modulated to generate a plurality of modulation symbols. The plurality of modulation symbols are mapped onto the subcarriers in at least one transmission layer of a transmission resource. The modulation symbols are then precoded by using a matrix for cyclic delay diversity and a set of codewords from a certain codebook to generate a plurality of precoded symbols. The codewords are cycled for every a certain number of subcarriers. Finally, the precoded symbols are transmitted via a plurality of transmission antennas.

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