公开(公告)号：US08750150B2

公开(公告)日：2014-06-10

申请号：US13339059

申请日：2011-12-28

申请人： Gong Zhang ,  Yi Long ,  Cheng He ,  Yong Cheng ,  Kin Nang Lau

发明人： Gong Zhang ,  Yi Long ,  Cheng He ,  Yong Cheng ,  Kin Nang Lau

IPC分类号： G01R31/08 ,  G06F11/00 ,  G08C15/00 ,  H04J1/16 ,  H04J3/14 ,  H04L1/00 ,  H04L12/26 ,  H04L12/28

CPC分类号： H04B7/024 ,  H04B7/0417 ,  H04B7/0626 ,  H04B7/0639 ,  H04B7/066

摘要： An apparatus and a system for transmitting channel state information acquires channel state information of a channel between a mobile terminal and two or more cooperative base stations. The apparatus quantizes the channel state information separately by using a preset single-cell codebook used for quantizing the channel between the mobile terminal and each one of the two or more cooperative base stations. The apparatus acquires united codeword indexes of the quantized channel state information in the single-cell codebook; and transmits the united codeword indexes of the quantized channel state information in the single-cell codebook.

摘要翻译： 用于发送信道状态信息的装置和系统获取移动终端与两个或多个合作基站之间的信道的信道状态信息。 该装置通过使用用于量化移动终端与两个或多个合作基站中的每个之间的信道的预设单小区码本分别对信道状态信息进行量化。 该装置在单小区码本中获取量化信道状态信息的统一码字索引; 并将该量化信道状态信息的统一码字索引发送到单小区码本。

公开(公告)号：US20120106384A1

公开(公告)日：2012-05-03

申请号：US13339059

申请日：2011-12-28

申请人： Gong Zhang ,  Yi Long ,  Cheng He ,  Yong Cheng ,  Kin Nang Lau

发明人： Gong Zhang ,  Yi Long ,  Cheng He ,  Yong Cheng ,  Kin Nang Lau

IPC分类号： H04W24/00 ,  H04L12/26

CPC分类号： H04B7/024 ,  H04B7/0417 ,  H04B7/0626 ,  H04B7/0639 ,  H04B7/066

摘要： An apparatus and a system for transmitting channel state information acquires channel state information of a channel between a mobile terminal and two or more cooperative base stations. The apparatus quantizes the channel state information separately by using a preset single-cell codebook used for quantizing the channel between the mobile terminal and each one of the two or more cooperative base stations. The apparatus acquires united codeword indexes of the quantized channel state information in the single-cell codebook; and transmits the united codeword indexes of the quantized channel state information in the single-cell codebook.

摘要翻译： 用于发送信道状态信息的装置和系统获取移动终端与两个或多个合作基站之间的信道的信道状态信息。 该装置通过使用用于量化移动终端与两个或多个合作基站中的每个之间的信道的预设单小区码本分别对信道状态信息进行量化。 该装置在单小区码本中获取量化信道状态信息的统一码字索引; 并将该量化信道状态信息的统一码字索引发送到单小区码本。

公开(公告)号：US20080293410A1

公开(公告)日：2008-11-27

申请号：US11753675

申请日：2007-05-25

申请人： Wing Chau Chan ,  Kwok Shum Au ,  Rui Wang ,  Tianyu Wu ,  Kin Nang Lau ,  Shu Kwan Cheng ,  Ross David Murch ,  Wai Ho Mow

发明人： Wing Chau Chan ,  Kwok Shum Au ,  Rui Wang ,  Tianyu Wu ,  Kin Nang Lau ,  Shu Kwan Cheng ,  Ross David Murch ,  Wai Ho Mow

IPC分类号： H04Q7/20

CPC分类号： H04W24/08

摘要： A method for sensing channel availability in a wireless network includes receiving a measurement request message which includes a channel interval list. A first channel interval in the list includes information associated with a first starting channel number, a first number of channels, and first linkage information of the channel interval list. The method includes processing information associated with the message, generating a first list of contiguous channels, and performing at least first channel measurement to determine a first channel availability for each of the first list of contiguous channels. The method also includes determining whether the channel interval list further includes a second channel interval that needs to be processed based on at least first linkage information, and if needed, generating a second list of contiguous channels and performing at least second channel measurement to determine a second channel availability for each of the second list of contiguous channels.

摘要翻译： 用于感测无线网络中的信道可用性的方法包括：接收包括信道间隔列表的测量请求消息。 列表中的第一信道间隔包括与第一起始信道号，第一信道数和信道间隔列表的第一链接信息相关联的信息。 该方法包括处理与消息相关联的信息，产生连续信道的第一列表，以及执行至少第一信道测量以确定第一连续信道列表中的每一个的第一信道可用性。 该方法还包括确定信道间隔列表是否还包括基于至少第一链接信息需要处理的第二信道间隔，并且如果需要，生成连续信道的第二列表并执行至少第二信道测量以确定 连续通道的第二列表中的每一个的第二通道可用性。

公开(公告)号：US07941302B2

公开(公告)日：2011-05-10

申请号：US12129896

申请日：2008-05-30

申请人： Xueyuan Zhao ,  Chun Kit Lee ,  Zhengang Pan ,  Chih-Lin I ,  Kin Nang Lau ,  Roger Shu Kwan Cheng

发明人： Xueyuan Zhao ,  Chun Kit Lee ,  Zhengang Pan ,  Chih-Lin I ,  Kin Nang Lau ,  Roger Shu Kwan Cheng

IPC分类号： G06F17/50 ,  H04L27/00

CPC分类号： H04B17/0087

摘要： Method and apparatus for channel simulation is disclosed. The claimed invention provides method and apparatus 1200 to simulate a propagation channel, particularly a multiple-input-multiple-input (MIMO) channel. The claimed invention further provides a method and apparatus for efficient optimization of antenna by the enhanced channel simulation. The claimed invention takes both antenna characteristics and channel characteristics as inputs, and output time-varying channel realizations to generate the system metrics as the optimization target for antenna under optimization. The claimed invention advantageous provides enhanced channel simulation to meet the accuracy requirement of antenna evaluation.

摘要翻译： 公开了用于信道模拟的方法和装置。 要求保护的发明提供了用于模拟传播信道，特别是多输入多输入（MIMO）信道的方法和装置1200。 所要求保护的发明还提供了一种通过增强的信道模拟来有效优化天线的方法和装置。 要求保护的发明将天线特性和信道特性作为输入，并输出时变信道实现，以在优化下生成作为天线优化目标的系统度量。 所要求的发明有利的是提供增强的信道模拟以满足天线评估的精度要求。

公开(公告)号：US20090299717A1

公开(公告)日：2009-12-03

申请号：US12129896

申请日：2008-05-30

申请人： Xueyuan Zhao ,  Chun Kit Lee ,  Zhengang Pan ,  Chih-Lin I ,  Kin Nang Lau ,  Roger Shu Kwan Cheng

发明人： Xueyuan Zhao ,  Chun Kit Lee ,  Zhengang Pan ,  Chih-Lin I ,  Kin Nang Lau ,  Roger Shu Kwan Cheng

IPC分类号： G06F17/50

CPC分类号： H04B17/0087

摘要： Method and apparatus for channel simulation is disclosed. The claimed invention provides method and apparatus 1200 to simulate a propagation channel, particularly a multiple-input-multiple-input (MIMO) channel. The claimed invention further provides a method and apparatus for efficient optimization of antenna by the enhanced channel simulation. The claimed invention takes both antenna characteristics and channel characteristics as inputs, and output time-varying channel realizations to generate the system metrics as the optimization target for antenna under optimization. The claimed invention advantageous provides enhanced channel simulation to meet the accuracy requirement of antenna evaluation.

摘要翻译： 公开了用于信道模拟的方法和装置。 要求保护的发明提供了用于模拟传播信道，特别是多输入多输入（MIMO）信道的方法和装置1200。 所要求保护的发明还提供了一种通过增强的信道模拟来有效优化天线的方法和装置。 要求保护的发明将天线特性和信道特性作为输入，并输出时变信道实现，以在优化下生成作为天线优化目标的系统度量。 所要求的发明有利的是提供增强的信道模拟以满足天线评估的精度要求。

公开(公告)号：US07583637B2

公开(公告)日：2009-09-01

申请号：US10355140

申请日：2003-01-31

申请人： Kin Nang Lau ,  Youjian Liu ,  Martin H. Meyers ,  Susan Wu Sanders

发明人： Kin Nang Lau ,  Youjian Liu ,  Martin H. Meyers ,  Susan Wu Sanders

IPC分类号： H04W4/00

CPC分类号： H04W28/22 ,  H04B2201/70703 ,  H04L1/0002 ,  H04L1/0007 ,  H04L47/10 ,  H04L47/14 ,  H04L47/29 ,  H04W24/00

摘要： In an aspect of the method, a received data packet is decoded in order to determine a packet error rate value, and an average package error value for N received data packets is updated based on the determined packet error rate value. The updated average packet error rate value is then compared against a threshold value and a data rate request is issued based on this comparison. In another aspect, a response to a transmitted data packet is received, the response being related to an average packet error rate value. The average packet error rate value is compared against a threshold and a data rate is modified based on the comparison. In each of the above aspects, a data rate control margin that is used to overcome channel estimate errors resulting from transmission delays may be dynamically adjusted, e.g., in real time, in order to optimize system resources.

摘要翻译： 在该方法的一方面，对接收的数据分组进行解码，以确定分组错误率值，并且基于所确定的分组错误率值来更新N个接收到的数据分组的平均包误差值。 然后将更新的平均分组错误率值与阈值进行比较，并且基于该比较发布数据速率请求。 在另一方面，接收对发送的数据分组的响应，响应与平均分组错误率值相关。 将平均分组错误率值与阈值进行比较，并且基于比较修改数据速率。 在上述每个方面中，用于克服由传输延迟引起的信道估计误差的数据速率控制余量可以例如实时地动态地调整，以优化系统资源。

公开(公告)号：US20050041750A1

公开(公告)日：2005-02-24

申请号：US10643841

申请日：2003-08-19

申请人： Kin Nang Lau

发明人： Kin Nang Lau

IPC分类号： H04L1/02 ,  H04L1/06 ,  H04L25/02

CPC分类号： H04L25/0242 ,  H04L1/06

摘要： Systems and methods of MIMO wireless communication system with partial feedback are disclosed. In one embodiment, a base station estimates the channel matrices of the K mobile units and transmits an index value corresponding to each of the estimated channel matrix. Each mobile unit selects a power control matrix and beam-forming matrix based on the received index value and transmits its data stream to the base station using the selected power control and beam-forming matrix. A method for generating the sets of power control matrices, beam-forming matrices, and partitions of the channel matrix space is disclosed.

摘要翻译： 公开了具有部分反馈的MIMO无线通信系统的系统和方法。 在一个实施例中，基站估计K个移动单元的信道矩阵，并且发送与估计的信道矩阵中的每一个对应的索引值。 每个移动单元基于接收到的索引值选择功率控制矩阵和波束形成矩阵，并使用所选择的功率控制和波束形成矩阵将其数据流发送到基站。 公开了一种用于生成功率控制矩阵，波束形成矩阵和信道矩阵空间的分区的集合的方法。

公开(公告)号：US08280443B2

公开(公告)日：2012-10-02

申请号：US10903911

申请日：2004-07-30

申请人： Meixia Tao ,  Cheong Yui Wong ,  Yan Wang ,  Kin Nang Lau ,  Ross D. Murch ,  Soung C. Liew ,  Douglas R. George

发明人： Meixia Tao ,  Cheong Yui Wong ,  Yan Wang ,  Kin Nang Lau ,  Ross D. Murch ,  Soung C. Liew ,  Douglas R. George

IPC分类号： H04M1/00

CPC分类号： H04B7/0617 ,  H04B7/0682 ,  H04B7/0691 ,  H04B7/0695 ,  H04B7/082 ,  H04B7/088 ,  H04W16/30 ,  H04W84/12 ,  H04W88/08

摘要： Disclosed are systems and methods which provide high bandwidth data communication with respect to a large coverage area using smart antenna and/or directional antenna (referred to herein as multi-beam antenna) technology. Circuitry may be provided at a WLAN AP to provide selection of particular antenna beams used in the downlink and/or uplink, control of multicast transmission, control of unicast transmission, and to provide antenna pattern shaping techniques. Embodiments implement multi-beam antenna technology with little or no hardware modifications to AP circuitry. Other embodiments implement multi-beam technology using radio front-end and/or radio hardware modifications to AP circuitry. Various diversity techniques may be implemented, such as selection diversity, maximum ratio combining, and equal gain combing. To provide desired antenna pattern shaping, phase offsets with respect to a signal as transmitted in each antenna beam may be employed.

摘要翻译： 公开了使用智能天线和/或定向天线（本文中称为多波束天线）技术提供相对于大覆盖区域的高带宽数据通信的系统和方法。 可以在WLAN AP处提供电路以提供在下行链路和/或上行链路中使用的特定天线波束的选择，多播传输的控制，单播传输的控制，以及提供天线模式整形技术。 实施例实现对AP电路几乎没有或没有硬件修改的多波束天线技术。 其他实施例使用对AP电路的无线电前端和/或无线电硬件修改来实现多波束技术。 可以实现各种分集技术，例如选择分集，最大比组合和等增益梳理。 为了提供期望的天线图案整形，可以采用相对于在每个天线波束中发送的信号的相位偏移。

公开(公告)号：US08081972B2

公开(公告)日：2011-12-20

申请号：US11753675

申请日：2007-05-25

申请人： Wing Chau Chan ,  Kwok Shum Au ,  Rui Wang ,  Tianyu Wu ,  Kin Nang Lau ,  Shu Kwan Cheng ,  Ross David Murch ,  Wai Ho Mow

发明人： Wing Chau Chan ,  Kwok Shum Au ,  Rui Wang ,  Tianyu Wu ,  Kin Nang Lau ,  Shu Kwan Cheng ,  Ross David Murch ,  Wai Ho Mow

IPC分类号： H04W4/00 ,  H04B7/00 ,  H04B15/00

CPC分类号： H04W24/08

摘要： A method for sensing channel availability in a wireless network includes receiving a measurement request message which includes a channel interval list. A first channel interval in the list includes information associated with a first starting channel number, a first number of channels, and first linkage information of the channel interval list. The method includes processing information associated with the message, generating a first list of contiguous channels, and performing at least first channel measurement to determine a first channel availability for each of the first list of contiguous channels. The method also includes determining whether the channel interval list further includes a second channel interval that needs to be processed based on at least first linkage information, and if needed, generating a second list of contiguous channels and performing at least second channel measurement to determine a second channel availability for each of the second list of contiguous channels.

摘要翻译： 用于感测无线网络中的信道可用性的方法包括：接收包括信道间隔列表的测量请求消息。 列表中的第一信道间隔包括与第一起始信道号，第一信道数和信道间隔列表的第一链接信息相关联的信息。 该方法包括处理与消息相关联的信息，产生连续信道的第一列表，以及执行至少第一信道测量以确定第一连续信道列表中的每一个的第一信道可用性。 该方法还包括确定信道间隔列表是否还包括基于至少第一链接信息需要处理的第二信道间隔，并且如果需要，生成连续信道的第二列表并执行至少第二信道测量以确定 连续通道的第二列表中的每一个的第二通道可用性。

公开(公告)号：US07761059B2

公开(公告)日：2010-07-20

申请号：US10445823

申请日：2003-05-28

申请人： Kin Nang Lau

发明人： Kin Nang Lau

IPC分类号： H04B1/00

CPC分类号： H04W52/42 ,  H04B7/0408 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/0663

摘要： A method of transmitting or receiving with constrained feedback information. A transmitter transmits a plurality of transmit signals from at least one transmit antenna. The plurality of transmit signals are based on one or more input signals, one or more power gains, and one or more beamformer matrices. The plurality of transmit signals are received as at least one receive signal, at at least one receive antenna of a receiver. The receiver generates the constrained feedback information and transmits the constrained feedback information back to the at least one transmit antenna. The transmitter selects at least one of the power gains and at least one of the beamformer matrices for a subsequent transmission based on the constrained feedback information.

摘要翻译： 一种利用约束反馈信息进行发送或接收的方法。 发射机从至少一个发射天线发送多个发射信号。 多个发射信号基于一个或多个输入信号，一个或多个功率增益和一个或多个波束形成器矩阵。 多个发送信号作为至少一个接收信号被接收在接收机的至少一个接收天线处。 接收器产生受约束的反馈信息，并将约束的反馈信息发送回至少一个发射天线。 发射机基于约束的反馈信息来选择功率增益中的至少一个和用于后续传输的波束形成器矩阵中的至少一个。