公开(公告)号：US08086181B2

公开(公告)日：2011-12-27

申请号：US12961741

申请日：2010-12-07

申请人： Daniel Wee ,  Hang Li ,  Weidong Yang ,  Guanghan Xu

发明人： Daniel Wee ,  Hang Li ,  Weidong Yang ,  Guanghan Xu

IPC分类号： H04B1/00 ,  H04B1/38

CPC分类号： H04W16/18 ,  H04B1/7103 ,  H04B2201/709709 ,  H04J11/005 ,  H04J13/16 ,  H04W16/10 ,  H04W28/18 ,  H04W72/00 ,  H04W72/08 ,  H04W88/08 ,  H04W88/12

摘要： A method and system for interference reduction for telecommunication systems are disclosed. The system comprises a base station control device (BCD) for configuring one or more parameters for operating one or more base stations (BSs), a first BS covering a first cell having one or more mobile terminals therein, a second BS covering a second cell neighboring to the first cell and sharing a predetermined frequency band with the first cell, wherein one or more radio frames constructed for communications between the first BS and any mobile terminal of the first cell and one or more radio frames constructed for communications between the second BS and any mobile terminal of the second cell are distinguishable by defining different channel configuration sets having one or more operation parameters, wherein the parameters includes a training sequence, a spreading code, and a channel observation window position.

摘要翻译： 公开了用于电信系统的干扰减少的方法和系统。 该系统包括用于配置用于操作一个或多个基站（BS）的一个或多个参数的基站控制设备（BCD），覆盖其中具有一个或多个移动终端的第一小区的第一BS，覆盖第二小区的第二BS 与所述第一小区相邻并且与所述第一小区共享预定频带，其中为所述第一小区和所述第一小区的任何移动终端之间的通信而构造的一个或多个无线电帧以及为所述第二小区之间的通信而构造的一个或多个无线电帧 并且通过定义具有一个或多个操作参数的不同的信道配置集来区分第二小区的任何移动终端，其中参数包括训练序列，扩展码和信道观察窗口位置。

公开(公告)号：US07885604B2

公开(公告)日：2011-02-08

申请号：US11437998

申请日：2006-05-18

申请人： Daniel Wee ,  Hang Li ,  Weidong Yang ,  Guanghan Xu

发明人： Daniel Wee ,  Hang Li ,  Weidong Yang ,  Guanghan Xu

IPC分类号： H04B1/00 ,  H04B7/212 ,  H04B7/00 ,  H04B15/00 ,  H04J4/00 ,  H04W24/00

CPC分类号： H04W16/18 ,  H04B1/7103 ,  H04B2201/709709 ,  H04J11/005 ,  H04J13/16 ,  H04W16/10 ,  H04W28/18 ,  H04W72/00 ,  H04W72/08 ,  H04W88/08 ,  H04W88/12

摘要： A method and system for interference reduction for telecommunication systems are disclosed. The system comprises a base station control device (BCD) for configuring one or more parameters for operating one or more base stations (BSs), a first BS covering a first cell having one or more mobile terminals therein, a second BS covering a second cell neighboring to the first cell and sharing a predetermined frequency band with the first cell, wherein one or more radio frames constructed for communications between the first BS and any mobile terminal of the first cell and one or more radio frames constructed for communications between the second BS and any mobile terminal of the second cell are distinguishable by defining different channel configuration sets having one or more operation parameters, wherein the parameters includes a training sequence, a spreading code, and a channel observation window position.

公开(公告)号：US20070010203A1

公开(公告)日：2007-01-11

申请号：US11437998

申请日：2006-05-18

申请人： Daniel Wee ,  Hang Li ,  Weidong Yang ,  Guanghan Xu

发明人： Daniel Wee ,  Hang Li ,  Weidong Yang ,  Guanghan Xu

IPC分类号： H04B1/00 ,  H04B15/00

CPC分类号： H04W16/18 ,  H04B1/7103 ,  H04B2201/709709 ,  H04J11/005 ,  H04J13/16 ,  H04W16/10 ,  H04W28/18 ,  H04W72/00 ,  H04W72/08 ,  H04W88/08 ,  H04W88/12

摘要： A method and system for interference reduction for telecommunication systems are disclosed. The system comprises a base station control device (BCD) for configuring one or more parameters for operating one or more base stations (BSs), a first BS covering a first cell having one or more mobile terminals therein, a second BS covering a second cell neighboring to the first cell and sharing a predetermined frequency band with the first cell, wherein one or more radio frames constructed for communications between the first BS and any mobile terminal of the first cell and one or more radio frames constructed for communications between the second BS and any mobile terminal of the second cell are distinguishable by defining different channel configuration sets having one or more operation parameters, wherein the parameters includes a training sequence, a spreading code, and a channel observation window position.

摘要翻译： 公开了用于电信系统的干扰减少的方法和系统。 该系统包括用于配置用于操作一个或多个基站（BS）的一个或多个参数的基站控制设备（BCD），覆盖其中具有一个或多个移动终端的第一小区的第一BS，覆盖第二小区的第二BS 与所述第一小区相邻并且与所述第一小区共享预定频带，其中为所述第一小区和所述第一小区的任何移动终端之间的通信而构造的一个或多个无线电帧以及为所述第二小区之间的通信而构造的一个或多个无线电帧 并且通过定义具有一个或多个操作参数的不同的信道配置集来区分第二小区的任何移动终端，其中参数包括训练序列，扩展码和信道观察窗口位置。

公开(公告)号：US20110076954A1

公开(公告)日：2011-03-31

申请号：US12961741

申请日：2010-12-07

申请人： Daniel Wee ,  Hang Li ,  Weidong Yang ,  Guanghan Xu

发明人： Daniel Wee ,  Hang Li ,  Weidong Yang ,  Guanghan Xu

IPC分类号： H04B1/00

CPC分类号： H04W16/18 ,  H04B1/7103 ,  H04B2201/709709 ,  H04J11/005 ,  H04J13/16 ,  H04W16/10 ,  H04W28/18 ,  H04W72/00 ,  H04W72/08 ,  H04W88/08 ,  H04W88/12

摘要： A method and system for interference reduction for telecommunication systems are disclosed. The system comprises a base station control device (BCD) for configuring one or more parameters for operating one or more base stations (BSs), a first BS covering a first cell having one or more mobile terminals therein, a second BS covering a second cell neighboring to the first cell and sharing a predetermined frequency band with the first cell, wherein one or more radio frames constructed for communications between the first BS and any mobile terminal of the first cell and one or more radio frames constructed for communications between the second BS and any mobile terminal of the second cell are distinguishable by defining different channel configuration sets having one or more operation parameters, wherein the parameters includes a training sequence, a spreading code, and a channel observation window position.

摘要翻译： 公开了用于电信系统的干扰减少的方法和系统。 该系统包括用于配置用于操作一个或多个基站（BS）的一个或多个参数的基站控制设备（BCD），覆盖其中具有一个或多个移动终端的第一小区的第一BS，覆盖第二小区的第二BS 与所述第一小区相邻并且与所述第一小区共享预定频带，其中为所述第一小区和所述第一小区的任何移动终端之间的通信而构造的一个或多个无线电帧以及为所述第二小区之间的通信而构造的一个或多个无线电帧 并且通过定义具有一个或多个操作参数的不同的信道配置集来区分第二小区的任何移动终端，其中参数包括训练序列，扩展码和信道观察窗口位置。

公开(公告)号：US07656936B2

公开(公告)日：2010-02-02

申请号：US10352774

申请日：2003-01-28

申请人： Hang Li ,  Weidong Yang ,  Guanghan Xu

发明人： Hang Li ,  Weidong Yang ,  Guanghan Xu

IPC分类号： H04B1/00 ,  H04B1/10 ,  H04B7/02 ,  H04L1/02

CPC分类号： H04B1/71055 ,  H04B7/0851 ,  H04W16/28

摘要： A method and system for reducing interference in a wireless communication network is disclosed. The wireless communication network has at least one base station using an antenna array and one or more code channels to receive or transmit one or more communication signals from or to a plurality of terminals used by one or more users. A signal received by the antenna array carries one or more training sequences and a traffic signal in a frame. After estimating a spatial signature and joint channel response model per user based on the training sequences, one or more spatial weights are found based on the estimated spatial signature and joint channel response model to maximize a signal to noise ratio. A joint detection matrix is then formed based on the estimated spatial weights, the joint channel response model, and a user code channel assignment. After code correlating a traffic signal to obtain one or more user specific multi-antenna signals, a spatial combining is performed on one or more multi-antenna signals associated with each user to generate scalar symbol estimates. Thereafter, a joint detection is done based on the scalar symbol estimates using the joint detection matrix. Similar techniques can be used for downlink communications.

摘要翻译： 公开了一种用于减少无线通信网络中的干扰的方法和系统。 无线通信网络具有使用天线阵列和一个或多个代码信道的至少一个基站来接收或发送来自一个或多个用户使用的多个终端的一个或多个通信信号。 由天线阵列接收的信号在帧中携带一个或多个训练序列和交通信号。 在基于训练序列估计每个用户的空间签名和联合信道响应模型之后，基于估计的空间签名和联合信道响应模型找到一个或多个空间权重以使信噪比最大化。 然后基于估计的空间权重，联合信道响应模型和用户代码信道分配来形成联合检测矩阵。 在将业务信号相关以获得一个或多个用户特定多天线信号的代码之后，对与每个用户相关联的一个或多个多天线信号执行空间组合以生成标量符号估计。 此后，基于使用联合检测矩阵的标量符号估计完成联合检测。 类似的技术可以用于下行链路通信。

公开(公告)号：US20060293060A1

公开(公告)日：2006-12-28

申请号：US11244973

申请日：2005-10-05

申请人： Weidong Yang ,  John Grabner ,  Guanghan Xu ,  Hang Jin ,  Hang Li

发明人： Weidong Yang ,  John Grabner ,  Guanghan Xu ,  Hang Jin ,  Hang Li

IPC分类号： H04Q7/20

CPC分类号： H04W36/22

摘要： A method and system is disclosed for load balancing in a wireless communication system. The method has two major processes for load balancing purpose: the first process moves a mobile terminal from its host base station to some less loaded base station after the expiration of a switch time interval determined by the signal strength difference between the original host base station and the base station that the mobile terminal is moving to; the second process moves the mobile terminal from its host base station to the base station with the strongest signal strength periodically.

摘要翻译： 公开了一种用于无线通信系统中的负载平衡的方法和系统。 该方法具有负载均衡目的的两个主要过程：第一过程将移动终端从其主机基站移动到在原始主机基站与原始主机基站之间的信号强度差确定的切换时间间隔期满之后的一些较少加载的基站 移动终端正在移动的基站; 第二过程周期性地以最强的信号强度将移动终端从其主机基站移动到基站。

公开(公告)号：US06856643B1

公开(公告)日：2005-02-15

申请号：US09693589

申请日：2000-10-20

申请人： Weidong Yang ,  Guanghan Xu

发明人： Weidong Yang ,  Guanghan Xu

IPC分类号： H04B1/707 ,  H04L25/02 ,  H04L25/03 ,  H04B1/69 ,  H04B1/713

CPC分类号： H04B1/71055 ,  H04L25/0204 ,  H04L25/0216 ,  H04L25/03006 ,  H04L2025/03375

摘要： A method for estimating symbol sequences from multiple transmitters which communicate with common receivers sharing the same medium is disclosed. This invention can be used in wireless communications and wireline communications such as in cable modem sys terms and digital subscriber loops to speed up joint detection of symbol sequences of multiple transmitters to achieve low error probability. For convenience, only applications of this invention to wireless communications employing multiple antennas are described herein. The requirement for matrix operations like matrix inverses increase with the logarithm of the number of symbols instead of the number of symbols as with techniques based on Cholesky decomposition.

摘要翻译： 公开了一种用于从与共享相同介质的共同接收机通信的多个发射机估计符号序列的方法。 本发明可以用于诸如电缆调制解调器系统术语和数字用户环路的无线通信和有线通信中，以加速多个发射机的符号序列的联合检测，以实现低错误概率。 为了方便起见，本文中仅描述了本发明对采用多个天线的无线通信的应用。 像矩阵反转的矩阵运算的要求随着符号数的对数而不是基于Cholesky分解的技术的符号数而增加。

公开(公告)号：US20050202784A1

公开(公告)日：2005-09-15

申请号：US11125684

申请日：2005-05-10

申请人： Guanghan Xu ,  Hang Jin ,  Weidong Yang

发明人： Guanghan Xu ,  Hang Jin ,  Weidong Yang

IPC分类号： H04W16/02 ,  H04W16/12 ,  H04W16/24 ,  H04B1/00

CPC分类号： H04W16/12 ,  H01Q1/246 ,  H01Q25/00 ,  H04W16/02 ,  H04W16/24 ,  H04W72/00 ,  H04W72/082

摘要： A method and system is disclosed for reducing multi-frequency signal interference in a wireless communication network. An available frequency spectrum is divided into a plurality of channels, a first wireless communication coverage unit is then segregated into a first number of geographical segments. After the segregated channels are grouped into a second number of channel blocks, each channel block is assigned to at least one of the segregated geographical segments with predetermined priorities. All the above steps are repeated for each neighboring wireless communication coverage unit of the first wireless communication coverage unit, wherein the channels in different channel blocks exhibit no higher mutual interference than the channels in the same channel block, and wherein the channel block assigned for each segregated segment of the first wireless communication coverage unit is different from the channel block assigned for the segregated segment of a second wireless communication coverage unit that immediately borders with the segregated segment of the first wireless coverage unit even if the first and second wireless communication coverage units share the same frequency spectrum.

摘要翻译： 公开了一种用于减少无线通信网络中的多频信号干扰的方法和系统。 可用频谱被分成多个信道，然后将第一无线通信覆盖单元分离成第一数量的地理段。 在分离的信道被分组为第二数量的信道块之后，每个信道块被分配给具有预定优先级的至少一个分离的地理分段。 对于第一无线通信覆盖单元的每个相邻无线通信覆盖单元重复所有上述步骤，其中不同信道块中的信道与相同信道块中的信道相比表现出没有更高的相互干扰，并且其中分配给每个信道块的信道块 第一无线通信覆盖单元的分离段与分配给第二无线通信覆盖单元的分离段的信道块不同，该第二无线通信覆盖单元即使第一和第二无线通信覆盖单元立即与第一无线覆盖单元的隔离段边界 共享相同的频谱。

公开(公告)号：US06157340A

公开(公告)日：2000-12-05

申请号：US179047

申请日：1998-10-26

申请人： Guanghan Xu ,  Xinguang Xu ,  Fuqi Mu ,  Daniel Wee ,  Yu Xia

发明人： Guanghan Xu ,  Xinguang Xu ,  Fuqi Mu ,  Daniel Wee ,  Yu Xia

IPC分类号： H01Q3/26 ,  H04B7/06 ,  H04B7/08 ,  H04B17/00 ,  G01S7/40

CPC分类号： H04B7/086 ,  H01Q3/2605 ,  H01Q3/267 ,  H04B17/12 ,  H04B7/0615 ,  H04B7/0617

摘要： A communication system having an adaptive antenna array subsystem generates calibration information for the adaptive array subsystem by measuring the amplitude and phase of modulated signals within the subsystem at the antenna array mount and at the back plane mount for the transmit and receive array. The calibration information is used to more accurately perform beamforming for both received an transmitted information signals. The communication system uses a time diversity duplex (TDD) synchronous code division multiple access (SCDMA) protocol for wireless communication between remote terminals and a base station. The calibration means uses a combination combiner and splitter having matched micro strip lines incorporated into a printed circuit board in either the antenna array mount or the back plane.

摘要翻译： 具有自适应天线阵列子系统的通信系统通过测量在天线阵列安装座处的子系统内以及用于发射和接收阵列的背面安装座处的调制信号的幅度和相位来产生用于自适应阵列子系统的校准信息。 校准信息用于更准确地对接收到的所发送的信息信号进行波束成形。 通信系统使用时间分集双工（TDD）同步码分多址（SCDMA）协议，用于远程终端与基站之间的无线通信。 校准装置使用组合组合器和分离器，其具有并入到天线阵列安装件或背板中的印刷电路板中的匹配的微带线。

公开(公告)号：US20100220677A1

公开(公告)日：2010-09-02

申请号：US12682518

申请日：2008-10-09

申请人： Hang Li ,  Guanghan Xu ,  Yongquan Qiang ,  Hui Zhou ,  Qiang Ma

发明人： Hang Li ,  Guanghan Xu ,  Yongquan Qiang ,  Hui Zhou ,  Qiang Ma

IPC分类号： H04W72/00 ,  H04L12/66

CPC分类号： H04L1/1835 ,  H04L1/0001 ,  H04L1/1607 ,  H04L45/00 ,  H04L47/26 ,  H04L47/34 ,  H04L47/70 ,  H04L47/76

摘要： Embodiments of the present invention provide a method and device for transmitting voice in a wireless system. The method includes: identifying, by a transmitter, each original voice encoding packet needed to be sent out with a number indicating playback order, and performing channel encoding on each identified original voice encoding packet to construct a voice session packet; establishing a voice session or voice data mixed session between the transmitter and a receiver; allocating a channel dynamically for the voice session or the voice data mixed session; sending, by the transmitter, newly-arrived voice session packets, delayed voice session packets, voice session packets needed to be re-transmitted, data session packets and control command packets according to pre-configured priority; receiving and detecting, by the receiver, the voice session packets, sending an NACK packet comprising number of a lost voice session packet to the transmitter to inform the transmitter to re-transmit the voice session packet, if it is confirmed that the voice session packet is lost; and putting voice session packets properly received into a jitter buffer controller at the receiver if the receiver is a terminal. In embodiments of the present invention, spectral efficiency and reliability of real-time voice services in a wireless multi-service transmission system may be improved while satisfying the Quality of Service (QoS) requirements of real-time services, such as voice service.

摘要翻译： 本发明的实施例提供了一种用于在无线系统中发送语音的方法和装置。 该方法包括：通过发送器识别需要发出的每个原始语音编码分组，其中指示播放顺序的数字，并且对每个识别的原始语音编码分组执行信道编码以构建语音会话分组; 在发射机和接收机之间建立语音会话或语音数据混合会话; 为语音会话或语音数据混合会话动态分配信道; 根据预配置的优先级，由发射机发送新到达的语音会话分组，延迟的语音会话分组，需要重发的语音会话分组，数据会话分组和控制命令分组; 由所述接收机接收和检测所述语音会话分组，向所述发射机发送包括丢失语音会话分组数量的NACK分组，以通知所述发射机重新发送所述语音会话分组，如果确认所述语音会话分组 失去了 并且如果接收器是终端，则将语音会话分组正确地接收到接收机的抖动缓冲器控制器中。 在本发明的实施例中，可以在满足诸如语音服务等实时业务的服务质量（QoS）要求的同时，提高无线多业务传输系统中的实时语音业务的频谱效率和可靠性。