公开(公告)号：US08498360B1

公开(公告)日：2013-07-30

申请号：US12861457

申请日：2010-08-23

申请人： Manyuan Shen ,  Guanbin Xing

发明人： Manyuan Shen ,  Guanbin Xing

IPC分类号： H04B7/02 ,  H04L1/02

CPC分类号： H04W72/005 ,  H04B7/0452 ,  H04B7/0671 ,  H04B7/12 ,  H04J11/0023 ,  H04J11/0063 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/0058 ,  H04W72/04

摘要： Advantage is taken of adaptive allocation techniques by intentionally creating multi-user diversity in an otherwise flat fading environment in order to improve system capacity. In one embodiment, multi-path distortion can be resolved to determine subscriber station (SS) diversity gain. Overall network capacity can be increased by allocating channel assignments to SSs within the network based on determined SS diversity gains. In one embodiment, intentional multi-path distortion is produced by transmitting a signal and a time-delayed version of the signal from a base station (BS).

公开(公告)号：US08259777B2

公开(公告)日：2012-09-04

申请号：US11651239

申请日：2007-01-09

申请人： Xuan Li ,  Manyuan Shen ,  Guanbin Xing

发明人： Xuan Li ,  Manyuan Shen ,  Guanbin Xing

IPC分类号： H04B1/00

CPC分类号： H04L27/2655 ,  H04L5/023 ,  H04L27/261 ,  H04L27/2662 ,  H04W52/08 ,  H04W52/146 ,  H04W52/42

摘要： Rapid uplink synchronization is enabled by reducing a 2D search problem to two 1D search problems, which can generally be performed in less time. Advantage is taken of fact that a mobile device sends a ranging code on multiple sub-carriers. Using the assumption that adjacent sub-carriers will have approximately equivalent channel characteristics, phase ambiguity can be removed by differentially combining pairs of adjacent sub-carriers. Once the phase ambiguity is removed, the code, timing, and power level may be determined relatively quickly. In one embodiment, the values of correlations between received signals and possible codes are compared with a threshold.

摘要翻译： 通过将2D搜索问题减少到两个1D搜索问题来实现快速上行链路同步，这通常可以在更短的时间内执行。 优点在于移动设备在多个子载波上发送测距码。 使用相邻子载波将具有近似等效信道特性的假设，可以通过差分地组合相邻副载波对来消除相位模糊度。 一旦去除相位模糊度，可以相对快速地确定代码，定时和功率水平。 在一个实施例中，将接收信号与可能代码之间的相关值与阈值进行比较。

公开(公告)号：US20100056062A1

公开(公告)日：2010-03-04

申请号：US12548393

申请日：2009-08-26

申请人： Hongyuan Zhang ,  Manyuan Shen ,  Songping Wu ,  Hui-Lang Lou ,  Yong Liu

发明人： Hongyuan Zhang ,  Manyuan Shen ,  Songping Wu ,  Hui-Lang Lou ,  Yong Liu

IPC分类号： H04B7/24

CPC分类号： H04B1/04 ,  H04B7/0617 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0684 ,  H04B7/0695 ,  H04B7/0848 ,  H04B7/086 ,  H04B7/088

摘要： A method for beamforming in a communication system includes receiving a first plurality of training data units via a plurality of antennas, applying a different steering vector as each training data unit is received, generating a first plurality of quality indicators based on the first plurality of received training data units, such that each of the first plurality of quality indicators corresponds to a respective one of the first plurality of received training data units, and selecting a steering vector based on the different steering vectors and the first plurality of quality indicators.

摘要翻译： 一种用于在通信系统中的波束成形的方法包括经由多个天线接收第一多个训练数据单元，在接收到每个训练数据单元时应用不同的导向向量，基于所接收的第一多个接收到的第一多个接收到的训练数据单元生成第一多个质量指示符 训练数据单元，使得所述第一多个质量指示符中的每一个对应于所述第一多个接收到的训练数据单元中的相应一个，并且基于所述不同的导向向量和所述第一多个质量指示符来选择导向向量。

公开(公告)号：US07573851B2

公开(公告)日：2009-08-11

申请号：US11007064

申请日：2004-12-07

申请人： Guanbin Xing ,  Manyuan Shen ,  Hui Liu

发明人： Guanbin Xing ,  Manyuan Shen ,  Hui Liu

IPC分类号： H04Q7/00

CPC分类号： H04L5/06 ,  H04B7/0452 ,  H04B7/0613 ,  H04B17/24 ,  H04B17/382 ,  H04L5/023 ,  H04L27/261 ,  H04W28/18 ,  H04W48/16 ,  H04W72/04 ,  H04W72/0453 ,  H04W72/085

摘要： A method and apparatus for antenna switching, grouping, and channel assignments in wireless communication systems. The invention allows multiuser diversity to be exploited with simple antenna operations, therefore increasing the capacity and performance of wireless communications systems. Channel characteristics indicative of signal reception quality for downlink or bi-directional traffic for each channel/antenna resource combination are measured or estimated at a subscriber. Corresponding channel characteristic information is returned to the base station. Channel characteristics information may also be measured or estimated for uplink or bi-directional signals received at each of multiple receive antenna resources. The base station employs channel allocation logic to assign uplink, downlink and/or bi-directional channels for multiple subscribers based on channel characteristics measured and/or estimated for the uplink, downlink and/or bi-directional channels.

摘要翻译： 一种用于无线通信系统中的天线切换，分组和信道分配的方法和装置。 本发明允许利用简单的天线操作来利用多用户分集，从而增加无线通信系统的容量和性能。 指示用于每个信道/天线资源组合的下行链路或双向业务的信号接收质量的信道特性在用户处被测量或估计。 相应的信道特征信息返回给基站。 还可以对在多个接收天线资源中的每一个处接收的上行链路或双向信号测量或估计信道特性信息。 基站采用信道分配逻辑以基于针对上行链路，下行链路和/或双向信道测量和/或估计的信道特性为多个用户分配上行链路，下行链路和/或双向信道。

公开(公告)号：US20080130766A1

公开(公告)日：2008-06-05

申请号：US11651239

申请日：2007-01-09

申请人： Xuan Li ,  Manyuan Shen ,  Guanbin Xing

发明人： Xuan Li ,  Manyuan Shen ,  Guanbin Xing

IPC分类号： H04L7/00 ,  H04L27/28 ,  H04L27/22

CPC分类号： H04L27/2655 ,  H04L5/023 ,  H04L27/261 ,  H04L27/2662 ,  H04W52/08 ,  H04W52/146 ,  H04W52/42

摘要： Rapid uplink synchronization is enabled by reducing a 2D search problem to two 1D search problems, which can generally be performed in less time. Advantage is taken of fact that a mobile device sends a ranging code on multiple sub-carriers. Using the assumption that adjacent sub-carriers will have approximately equivalent channel characteristics, phase ambiguity can be removed by differentially combining pairs of adjacent sub-carriers. Once the phase ambiguity is removed, the code, timing, and power level may be determined relatively quickly. In one embodiment, the values of correlations between received signals and possible codes are compared with a threshold.

摘要翻译： 通过将2D搜索问题减少到两个1D搜索问题来实现快速上行链路同步，这通常可以在更短的时间内执行。 优点在于移动设备在多个子载波上发送测距码。 使用相邻子载波将具有近似等效信道特性的假设，可以通过差分地组合相邻副载波对来消除相位模糊度。 一旦去除相位模糊度，可以相对快速地确定代码，定时和功率水平。 在一个实施例中，将接收信号与可能代码之间的相关值与阈值进行比较。

公开(公告)号：US20060120477A1

公开(公告)日：2006-06-08

申请号：US11007570

申请日：2004-12-07

申请人： Manyuan Shen ,  Guanbin Xing ,  Hui Liu

发明人： Manyuan Shen ,  Guanbin Xing ,  Hui Liu

IPC分类号： H04L1/02

CPC分类号： H04L1/0625 ,  H04B7/024 ,  H04B7/0452 ,  H04B7/0669 ,  H04B7/068 ,  H04L27/2626 ,  H04L2001/0092

摘要： A method and system for cooperative multiple-input multiple output (MIMO) transmission operations in a multicell wireless network. Under the method, antenna elements from two or more base stations are used to from an augmented MIMO antenna array that is used to transmit and receive MIMO transmissions to and from one or more terminals. The cooperative MIMO transmission scheme supports higher dimension space-time-frequency processing for increased capacity and system performance.

公开(公告)号：US20060120395A1

公开(公告)日：2006-06-08

申请号：US11007064

申请日：2004-12-07

申请人： Guanbin Xing ,  Manyuan Shen ,  Hui Liu

发明人： Guanbin Xing ,  Manyuan Shen ,  Hui Liu

IPC分类号： H04H1/04 ,  H04J1/00 ,  H04J3/22 ,  H04J3/16 ,  H04L12/28

CPC分类号： H04L5/06 ,  H04B7/0452 ,  H04B7/0613 ,  H04B17/24 ,  H04B17/382 ,  H04L5/023 ,  H04L27/261 ,  H04W28/18 ,  H04W48/16 ,  H04W72/04 ,  H04W72/0453 ,  H04W72/085

摘要： A method and apparatus for antenna switching, grouping, and channel assignments in wireless communication systems. The invention allows multiuser diversity to be exploited with simple antenna operations, therefore increasing the capacity and performance of wireless communications systems. Channel characteristics indicative of signal reception quality for downlink or bi-directional traffic for each channel/antenna resource combination are measured or estimated at a subscriber. Corresponding channel characteristic information is returned to the base station. Channel characteristics information may also be measured or estimated for uplink or bi-directional signals received at each of multiple receive antenna resources. The base station employs channel allocation logic to assign uplink, downlink and/or bi-directional channels for multiple subscribers based on channel characteristics measured and/or estimated for the uplink, downlink and/or bi-directional channels.

公开(公告)号：US20060116077A1

公开(公告)日：2006-06-01

申请号：US11001939

申请日：2004-12-01

申请人： Hui Liu ,  Manyuan Shen ,  Guanbin Xing

发明人： Hui Liu ,  Manyuan Shen ,  Guanbin Xing

IPC分类号： H04B1/00

CPC分类号： H04L1/0003 ,  H04J13/00 ,  H04J13/0077 ,  H04L1/0009 ,  H04L1/0017 ,  Y02D50/10

摘要： A method and apparatus for combining signals of multiple users onto a common channel is disclosed. In one embodiment, the method comprises identifying one or more traffic channels that are of one or more predetermined quality levels to a plurality of subscriber units based on channel profiles of the plurality of subscriber units and transmitting phase modulation multiplexed signals to the plurality of subscriber units through a common set of one or more channels having higher quality than the one or more predetermined quality levels.

公开(公告)号：US08320396B2

公开(公告)日：2012-11-27

申请号：US11491470

申请日：2006-07-21

申请人： Manyuan Shen ,  Guanbin Xing

发明人： Manyuan Shen ,  Guanbin Xing

IPC分类号： H04J3/16

CPC分类号： H04W72/0473 ,  H04W4/06 ,  H04W52/343 ,  H04W52/346 ,  H04W52/40 ,  H04W72/048

摘要： A system and method of wireless communication power control is provided which allows for adjusting power levels without requiring high bandwidth for control. Embodiments allocate subcarriers into unequal power groups, each group having a consistent subcarrier power level. Using interference parameter information from a user, a subcarrier is assigned from a group having adequate power to maintain the user's required power level. In general, users with higher power requirements, such as those near cell boundaries, will be assigned subcarriers from a group having a higher power level. A cell may use a different allocation than a neighbor, so that subcarriers with the highest power level in one cell may not also have the highest power level in a neighboring cell. Such diversity may reduce inter-cell interference of the subcarriers near a cell boundary, since no two subcarriers are transmitted with highest power simultaneously by neighboring base stations.

摘要翻译： 提供了一种无线通信功率控制的系统和方法，其允许调整功率水平，而不需要高带宽用于控制。 实施例将副载波分配到不等功率组中，每组具有一致的副载波功率电平。 使用来自用户的干扰参数信息，从具有足够功率的组分配子载波以维持用户所需的功率电平。 一般来说，具有较高功率要求的用户（例如小区边界附近的用户）将被从具有较高功率级别的组中分配副载波。 小区可以使用与邻居不同的分配，使得一个小区中具有最高功率电平的子载波在相邻小区中可能不具有最高功率电平。 这种分集可以减少小区边界附近的子载波的小区间干扰，因为相邻基站同时以最高的功率发送两个子载波。

公开(公告)号：US08280444B1

公开(公告)日：2012-10-02

申请号：US12037758

申请日：2008-02-26

申请人： Manyuan Shen ,  Guanbin Xing ,  Xun Shao

发明人： Manyuan Shen ,  Guanbin Xing ,  Xun Shao

IPC分类号： H04M1/00 ,  H04B1/38

CPC分类号： H04B7/024 ,  H04B7/0606 ,  H04B7/0695

摘要： Systems and methods which implement cooperative random or quasi-random beam forming as between a plurality of base stations in a wireless network to reduce multi-cell interference are shown. For example, a plurality of base stations in a wireless network cooperate to provide frequency resources, such as channels, subchannels, subcarriers, etc., in a plurality of randomesque beams. In operation, subscriber stations preferably analyze signals as received on a plurality of the randomesque beams to determine one or more “best” beams for use in communication between the subscriber station and base station. Assuming an identified beam is available for use by the subscriber station, payload communications may be provided using one or more beams identified by the subscriber station as a “best” beam. The base stations of the wireless network preferably cooperate to periodically reform the randomesque beams.

摘要翻译： 示出了在无线网络中的多个基站之间实现协作随机或准随机波束形成以减少多小区干扰的系统和方法。 例如，无线网络中的多个基站协作以在多个随机矩阵波束中提供频率资源，例如信道，子信道，子载波等。 在操作中，用户站优选地分析在多个随机阵列波束上接收的信号，以确定用于用户站和基站之间的通信中使用的一个或多个最佳波束。 假设所识别的波束可供用户台使用，可以使用由用户台标识的一个或多个波束作为最佳波束来提供有效载荷通信。 无线网络的基站优选地协作以周期性地改变随机阵列。