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1. 发明授权

US08086181B2 Method and system for interference reduction 有权
标题翻译：减少干扰的方法和系统
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。

2. 发明申请

US20100220677A1 METHOD AND DEVICE FOR TRANSMITTING VOICE IN WIRELESS SYSTEM 有权
标题翻译：用于在无线系统中发送语音的方法和装置
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。

3. 发明授权

US07656936B2 Method and system for interference reduction in a wireless communication network using a joint detector 有权
标题翻译：使用联合检测器的无线通信网络中减少干扰的方法和系统
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。

4. 发明授权

US06157340A Adaptive antenna array subsystem calibration 有权
标题翻译：自适应天线阵列子系统校准
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。

5. 发明授权

US6122260A Smart antenna CDMA wireless communication system 失效
标题翻译：智能天线CDMA无线通信系统
公开(公告)号：US6122260A
公开(公告)日：2000-09-19
申请号：US768100
申请日：1996-12-16
申请人： Hui Liu , Guanghan Xu
发明人： Hui Liu , Guanghan Xu
IPC分类号： H04B7/10 , H04B7/005 , H04B7/04 , H04B7/06 , H04B7/08 , H04B7/26 , H04J13/00
CPC分类号： H04W52/42 , H04B7/0617 , H04B7/0632 , H04B7/086 , H04B7/0408 , Y02B60/50
摘要： A TDD antenna array S-CDMA system for increasing the capacity and quality of a wireless communications is disclosed. By simultaneous exploiting the spatial and code diversities, high performance communications between a plurality of remote terminals and a base station is achieved without sacrificing system flexibility and robustness. The time-division-duplex mode together with the inherent interference immunity of S-CDMA signals allow the spatial diversity to be exploited using simple and robust beamforming rather than demanding nulling. Measurements from an array of receiving antennas at the base station are utilized to estimate spatial signatures, timing offsets, transmission powers and other propagation parameters associated with a plurality of S-CDMA terminals. Such information is then used for system synchronization, downlink beamforming, as well as handoff management. In an examplary embodiment, the aforementioned processing is accomplished with minimum computations, thereby allowing the disclosed system to be applicable to a rapidly varying environment. Among many other inherent benefits of the present invention are large capacity and power efficiency, strong interference/fading resistance, robustness power control, and easy hand-off.
摘要翻译：公开了一种用于增加无线通信的容量和质量的TDD天线阵列S-CDMA系统。通过同时利用空间和代码多样性，实现了多个远程终端与基站之间的高性能通信，而不牺牲系统灵活性和鲁棒性。时分双工模式以及S-CDMA信号的固有抗干扰能力允许使用简单且鲁棒的波束成形来利用空间分集，而不是要求零点。来自基站的接收天线阵列的测量被用于估计与多个S-CDMA终端相关联的空间签名，定时偏移，发射功率和其它传播参数。然后将这样的信息用于系统同步，下行链路波束成形以及切换管理。在示例性实施例中，通过最小计算来实现上述处理，从而允许所公开的系统适用于快速变化的环境。本发明的许多其它固有的优点是具有大容量和功率效率，强的抗干扰/抗褪色性，鲁棒性功率控制和便于切换。

6. 发明申请

US20080160921A1 Method and System for Mitigating Interference in Communication System 审中-公开
标题翻译：减少通信系统干扰的方法和系统
公开(公告)号：US20080160921A1
公开(公告)日：2008-07-03
申请号：US12047683
申请日：2008-03-13
申请人： Hang Li , Guanghan Xu
发明人： Hang Li , Guanghan Xu
IPC分类号： H04B17/00
CPC分类号： H04W52/243 , H04B17/336 , H04L1/0003
摘要： A method and system for mitigating interference in a communication system, comprising at least one base station and at least one terminal, are disclosed. The base stations and terminals communicate through a channel existing between them, and the channels include at least a first signal channel and a second signal channel. The method includes determination of channel, noise and self-interference characteristic, computation of a rate limit of the channels, computation of the rate assignment of the channels, and assignment of the computed rate assignments to the channels. In another aspect of the present invention, the method includes determination of channel characteristics; computation of a power control margin, self-interference characteristics, power control command; and assignment of the computed power control command to each communicating terminal and base station. The above power and rate control methods may operate jointly to mitigate both intra-cell and inter-cell interference in wireless communication systems.
摘要翻译：公开了一种用于减轻包括至少一个基站和至少一个终端的通信系统中的干扰的方法和系统。基站和终端通过它们之间存在的信道通信，并且信道至少包括第一信号信道和第二信号信道。该方法包括信道，噪声和自干扰特性的确定，信道的速率限制的计算，信道的速率分配的计算以及所计算的速率分配到信道的分配。在本发明的另一方面，所述方法包括确定信道特性; 功率控制余量的计算，自干扰特性，功率控制指令; 以及将计算出的功率控制命令分配给每个通信终端和基站。上述功率和速率控制方法可以共同操作以减轻无线通信系统中的小区内和小区间干扰。

7. 发明申请

US20060293060A1 Load balancing method for wireless communication systems 审中-公开
标题翻译：无线通信系统的负载均衡方法
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。

8. 发明申请

US20060210001A1 Method and system for mitigating interference in communication system 有权
标题翻译：减轻通信系统干扰的方法和系统
公开(公告)号：US20060210001A1
公开(公告)日：2006-09-21
申请号：US11083478
申请日：2005-03-18
申请人： Hang Li , Guanghan Xu
发明人： Hang Li , Guanghan Xu
IPC分类号： H03D1/04
CPC分类号： H04W52/243 , H04B17/336 , H04L1/0003
摘要： A method and system for mitigating interference in a communication system, comprising at least one base station and at least one terminal, are disclosed. The base stations and terminals communicate through a channel existing between them, and the channels include at least a first signal channel and a second signal channel. The method includes determination of channel, noise and self-interference characteristic, computation of a rate limit of the channels, computation of the rate assignment of the channels, and assignment of the computed rate assignments to the channels. In another aspect of the present invention, the method includes determination of channel characteristics; computation of a power control margin, self-interference characteristics, power control command; and assignment of the computed power control command to each communicating terminal and base station. The above power and rate control methods may operate jointly to mitigate both intra-cell and inter-cell interference in wireless communication systems.
摘要翻译：公开了一种用于减轻包括至少一个基站和至少一个终端的通信系统中的干扰的方法和系统。基站和终端通过它们之间存在的信道通信，并且信道至少包括第一信号信道和第二信号信道。该方法包括信道，噪声和自干扰特性的确定，信道的速率限制的计算，信道的速率分配的计算以及所计算的速率分配到信道的分配。在本发明的另一方面，所述方法包括确定信道特性; 功率控制余量的计算，自干扰特性，功率控制指令; 以及将计算出的功率控制命令分配给每个通信终端和基站。上述功率和速率控制方法可以共同操作以减轻无线通信系统中的小区内和小区间干扰。

9. 发明授权

US06904266B1 Wireless enhancer using a switch matrix 有权
标题翻译：无线增强器使用开关矩阵
公开(公告)号：US06904266B1
公开(公告)日：2005-06-07
申请号：US10078635
申请日：2002-02-19
申请人： Hang Jin , Guanghan Xu , Xinguang Xu
发明人： Hang Jin , Guanghan Xu , Xinguang Xu
IPC分类号： H04B7/14 , H04B7/155
CPC分类号： H04B7/15571
摘要： An improved enhancer is disclosed which uses a switch matrix to increase the isolation between two antennas. For either an reverse link or forward link communication, the enhancer has a first antenna for receiving an incoming signal, and a receiver sub-system that amplifies and converts the incoming signal from the first antenna to a first predetermined frequency band. The enhancer further has a demodulator coupled to the receiver sub-system for demodulating the converted signal, and detecting timing information thereof. Also contained in the enhancer is a transmitter sub-system operable with the receiver sub-system that converts the signal from the receiver subsystem to a second predetermined frequency band and further amplifies the signal. After the signal is thus enhanced, a second antenna is used for further transmitting the amplified signal from the transmitted sub-system. The switch matrix controls connection switching among the first antenna, the second antenna, the transmitter sub-system, and the receiver sub-system, wherein the connection switching of the switch matrix is made based on the timing information detected by the demodulator and based on whether the incoming signal comes from a terminal or a base transceiver station.
摘要翻译：公开了一种改进的增强器，其使用开关矩阵来增加两个天线之间的隔离。对于反向链路或前向链路通信，增强器具有用于接收输入信号的第一天线以及将来自第一天线的输入信号放大并转换为第一预定频带的接收机子系统。增强器还具有耦合到接收机子系统的解调器，用于解调转换的信号，并检测其定时信息。增强器中还包括可与接收机子系统一起操作的发射机子系统，其将来自接收机子系统的信号转换为第二预定频带，并进一步放大信号。在信号被增强之后，使用第二天线来进一步从发射的子系统发射放大的信号。开关矩阵控制第一天线，第二天线，发射机子系统和接收机子系统之间的连接切换，其中，基于由解调器检测的定时信息，并基于输入信号是来自终端还是基站收发台。

10. 发明授权

US6005854A Synchronous wireless access protocol method and apparatus 失效
标题翻译：同步无线接入协议方法和装置
公开(公告)号：US6005854A
公开(公告)日：1999-12-21
申请号：US908914
申请日：1997-08-08
申请人： Guanghan Xu , Yucong Gu , Wei Chen , Ying Chen , Peiwei Wang , Shihe Li
发明人： Guanghan Xu , Yucong Gu , Wei Chen , Ying Chen , Peiwei Wang , Shihe Li
IPC分类号： H04B7/26 , H04J13/00 , H04W28/06 , H04W56/00
CPC分类号： H04W28/06 , H04B7/2668 , H04J13/00 , H04W56/00
摘要： A wireless communication system has a protocol enabling synchronous code division multiple access (CDMA) communication on a time division duplex (TDD) frequency, and provides for a smart antenna system as an integral component of the system. The protocol has downlink time slots (DTS) which provide for synchronization and paging of all remote terminals from a base station on a omnidirectional code channel and while providing for traffic signals on directional traffic channels. The protocol has uplink time slots (DTS) which enable rapid link requests by remote terminals, as well as enabling improved spacial estimation, synchronization and power control of remote terminals by the base station.
摘要翻译：无线通信系统具有在时分双工（TDD）频率上实现同步码分多址（CDMA）通信的协议，并且将智能天线系统提供为系统的组成部分。该协议具有下行链路时隙（DTS），其提供来自全向码通道上的基站的所有远程终端的同步和寻呼以及在定向业务信道上提供业务信号。该协议具有上行链路时隙（DTS），能够实现远程终端的快速链路请求，并且能够实现基站对远程终端的改进的空间估计，同步和功率控制。

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