公开(公告)号：US20070249404A1

公开(公告)日：2007-10-25

申请号：US11784090

申请日：2007-04-04

申请人： Shiwei Gao ,  Hafedh Trigui

发明人： Shiwei Gao ,  Hafedh Trigui

IPC分类号： H04M1/00

CPC分类号： H01Q3/2605 ,  H04B7/086

摘要： A novel system for performing adaptive beamforming in a slow frequency hopping environment is disclosed. The presence of slow frequency hopping means that conventional mechanisms of using beamforming weights from previous time slots are inapplicable. The inventive system calculates a series of beamforming weights from an estimate of the spatial location of the mobile subscriber in the previous frame, which is impervious to slow frequency hopping and the data that precedes the training sequence data of the current frame. The beamforming weights and the spatial location of the mobile are updated with the arrival of the entirety of the current frame. The initial beamforming weight estimate is sufficient to permit processing on a real-time basis of the current frame even if the inventive system is implemented as an appliqué system interposed between the antenna array and a conventional base station.

摘要翻译： 公开了一种用于在慢跳频环境中执行自适应波束成形的新颖系统。 慢跳频的存在意味着使用来自前一时隙的波束成形权重的常规机制是不适用的。 本发明的系统从先前帧中的移动用户的空间位置的估计中计算出一系列波束形成权重，其不可避免慢跳频和在当前帧的训练序列数据之前的数据。 随着当前帧的整体的到达，波束成形权重和移动台的空间位置被更新。 即使本发明的系统被实现为插入在天线阵列和常规基站之间的贴布系统，初始波束形成权重估计足以允许基于当前帧的实时处理。

公开(公告)号：US20070249403A1

公开(公告)日：2007-10-25

申请号：US11784089

申请日：2007-04-04

申请人： Shiwei Gao ,  Hafedh Trigui

发明人： Shiwei Gao ,  Hafedh Trigui

IPC分类号： H04M1/00

CPC分类号： H04W16/28 ,  H04W84/12

摘要： A novel system is disclosed for WLAN applications. The inventive system mitigates the problem of interference by overlaying an omni-directional pattern with a plurality of directional beams, where each beam covers only part of the serving area defined by the omni-directional pattern. After an initial communication from the subscriber stations along the omni-directional pattern, the directional beam that provides the best signal quality is determined and the access point thereafter communicates with that subscriber station using only the beam with the best signal quality. The inventive concept can be expanded to encompass MIMO WLAN systems.

摘要翻译： 公开了一种用于WLAN应用的新颖系统。 本发明的系统通过用多个定向波束覆盖全向图案来缓解干扰问题，其中每个波束仅覆盖由全向图案定义的服务区域的一部分。 在沿着全向模式从用户站进行初始通信之后，确定提供最佳信号质量的定向波束，然后该接入点仅使用具有最佳信号质量的波束与该用户台进行通信。 本发明的概念可以扩展到包括MIMO WLAN系统。

公开(公告)号：US20070249308A1

公开(公告)日：2007-10-25

申请号：US11784103

申请日：2007-04-04

申请人： Shiwei Gao ,  Hafedh Trigui

发明人： Shiwei Gao ,  Hafedh Trigui

IPC分类号： H04B17/02 ,  H04B1/06 ,  H04M1/00

CPC分类号： H04B7/0857 ,  H04B7/0854 ,  H04B7/0874

摘要： A method and apparatus for an uplink signal processing system that includes converting a plurality of received RF signals which can be grouped by common diversity characteristics into the digital domain, and performing signal processing on the signals to maximize the signal to noise ratio, when the signals common to a diversity characteristic are combined. The signals are then combined and converted back to RF, to conventionally provide a base station with a main and diversity channel.

摘要翻译： 一种用于上行链路信号处理系统的方法和装置，包括将可以通过公共分集特性分组的多个接收的RF信号转换成数字域，以及当信号信号最大化时对信号执行信号处理以使信噪比最大化 共同的多样性特征相结合。 然后将信号组合并转换回RF，以通常为基站提供主和分集信道。

公开(公告)号：US07756227B2

公开(公告)日：2010-07-13

申请号：US11784090

申请日：2007-04-04

申请人： Shiwei Gao ,  Hafedh Trigui

发明人： Shiwei Gao ,  Hafedh Trigui

IPC分类号： H04B7/10

CPC分类号： H01Q3/2605 ,  H04B7/086

摘要： A novel system for performing adaptive beamforming in a slow frequency hopping environment is disclosed. The presence of slow frequency hopping means that conventional mechanisms of using beamforming weights from previous time slots are inapplicable. The inventive system calculates a series of beamforming weights from an estimate of the spatial location of the mobile subscriber in the previous frame, which is impervious to slow frequency hopping and the data that precedes the training sequence data of the current frame. The beamforming weights and the spatial location of the mobile are updated with the arrival of the entirety of the current frame. The initial beamforming weight estimate is sufficient to permit processing on a real-time basis of the current frame even if the inventive system is implemented as an appliqué system interposed between the antenna array and a conventional base station.

摘要翻译： 公开了一种用于在慢跳频环境中执行自适应波束成形的新颖系统。 慢跳频的存在意味着使用来自前一时隙的波束成形权重的常规机制是不适用的。 本发明的系统从先前帧中的移动用户的空间位置的估计中计算出一系列波束形成权重，其不可避免慢跳频和在当前帧的训练序列数据之前的数据。 随着当前帧的整体的到达，波束成形权重和移动台的空间位置被更新。 即使本发明的系统被实现为插入在天线阵列和常规基站之间的贴布系统，初始波束形成权重估计足以允许基于当前帧的实时处理。

公开(公告)号：US20070285312A1

公开(公告)日：2007-12-13

申请号：US11784485

申请日：2007-04-06

申请人： Shiwei Gao ,  Hafedh Trigui

发明人： Shiwei Gao ,  Hafedh Trigui

IPC分类号： H04B7/26

CPC分类号： H01Q3/24 ,  H01Q1/246 ,  H01Q3/40 ,  H04B7/0617 ,  H04B7/0857

摘要： A system and method of providing an adaptive multi-beam capability to a wireless base transceiver station is disclosed. The system comprises a plurality of transmit and receive antenna arrays and a plurality of static beamformers to form a limited number of beams. The beam data is reduced to digital baseband form whereupon it is digitally beamformed using a set of adaptive beamforming weights generated having regard to the form and content of the data and the environment. Such form and content information is obtained directly or indirectly from the base transceiver station. The weights are calculated using an average power function derived from a correlation of the beam data with a reference signal that mimics the training sequence assigned to the base transceiver station. Because the average power does not vary widely from frame to frame, the weights derived from the uplink direction may be reapplied in the downlink direction. Specific provision is made for data packets, where downlink packets may contain control information intended for broadcast to all subscribers.

摘要翻译： 公开了一种向无线基站收发台提供自适应多波束能力的系统和方法。 该系统包括多个发射和接收天线阵列和多个静态波束形成器以形成有限数量的波束。 波束数据被减少到数字基带形式，因此使用在考虑了数据和环境的形式和内容的情况下产生的一组自适应波束赋形权重进行数字波束形成。 这种形式和内容信息直接或间接从基地收发台获得。 使用从波束数据与模拟分配给基站的训练序列的参考信号的相关性导出的平均功率函数来计算加权。 因为平均功率在帧之间不会很大地变化，所以从上行链路方向导出的权重可以在下行链路方向重新应用。 具体规定了数据包，其中下行链路分组可以包含旨在广播给所有订户的控制信息。

公开(公告)号：US20110136478A1

公开(公告)日：2011-06-09

申请号：US12634057

申请日：2009-12-09

申请人： Hafedh Trigui

发明人： Hafedh Trigui

IPC分类号： H04W24/02

CPC分类号： H04W24/02 ,  H04B7/0408 ,  H04B7/0491 ,  H04W16/18 ,  H04W24/08 ,  H04W28/08

摘要： An embodiment of the invention relates to a method of modifying communication parameters of a wireless network, the wireless network having at least two antennas, and each of the antennas providing coverage to at least one sector. The method including obtaining measurement data for at least two sectors of the wireless network, determining, from the obtained measurement data, if a signal strength indicator of one or more sectors of the at least two sectors is at or below a target value, determining, if the one or more sectors is at or below the target value, a communication parameter to be applied to the wireless network such that the signal strength indicator of the one or more sectors is above the target value, and modifying the communication parameters of the wireless network such that the determined communication parameter is applied to the wireless network.

摘要翻译： 本发明的实施例涉及一种修改无线网络的通信参数的方法，所述无线网络具有至少两个天线，并且每个天线向至少一个扇区提供覆盖。 该方法包括获得无线网络的至少两个扇区的测量数据，从所获得的测量数据确定所述至少两个扇区中的一个或多个扇区的信号强度指示符是否在目标值以下， 如果一个或多个扇区处于或低于目标值，则要应用于无线网络的通信参数，使得一个或多个扇区的信号强度指示符高于目标值，并修改无线的通信参数 网络，使得所确定的通信参数被应用于无线网络。

公开(公告)号：US20110130135A1

公开(公告)日：2011-06-02

申请号：US12628442

申请日：2009-12-01

申请人： Hafedh Trigui

发明人： Hafedh Trigui

IPC分类号： H04W24/00

CPC分类号： H04W24/08 ,  H04W16/18

摘要： A method, program, system and apparatus for detecting coverage holes in a wireless communication network are discussed. Coverage hole detection is performed by collecting data from subscribers and extracting relevant parameters from the data. The relevant parameters are used to estimate the location of subscribers. The estimated locations are stored in a database and used to generate a coverage map for a wireless communication network.

摘要翻译： 讨论了一种在无线通信网络中检测覆盖孔的方法，程序，系统和装置。 通过从订户收集数据并从数据中提取相关参数来执行覆盖孔检测。 相关参数用于估计用户的位置。 估计的位置被存储在数据库中并用于生成无线通信网络的覆盖图。

公开(公告)号：US20090323530A1

公开(公告)日：2009-12-31

申请号：US12385752

申请日：2009-04-17

申请人： Hafedh Trigui ,  Rick Cuthill ,  Richard Glenn Kusyk

发明人： Hafedh Trigui ,  Rick Cuthill ,  Richard Glenn Kusyk

IPC分类号： H04W72/00 ,  H04W4/00 ,  G08C15/00 ,  H04L12/26

CPC分类号： H04L41/5025 ,  H04W16/08 ,  H04W28/0289 ,  H04W28/18 ,  H04W64/00

摘要： A method, program, system and apparatus perform dynamic load balancing of coverage areas in a wireless communication network. The dynamic load balancing is performed by evaluating cell congestion based on location information of subscribers in the wireless communication network, collecting network parameters related to the wireless communication network and altering network parameters based on the evaluated cell congestion. After the network parameter is altered, the coverage areas are narrowed. Improvements in cell congestion and quality of server are then determined based on the narrowing of the coverage areas. Altering of the plurality of network parameters and evaluating of the cell congestion are performed continuously until a target quality of service is achieved.

摘要翻译： 方法，程序，系统和装置对无线通信网络中的覆盖区域进行动态负载平衡。 通过基于无线通信网络中的用户的位置信息评估小区拥塞，基于评估的小区拥塞收集与无线通信网络相关的网络参数并改变网络参数来执行动态负载平衡。 更改网络参数后，覆盖区域变窄。 然后根据覆盖区域的变窄来确定服务器的小区拥塞和质量的改善。 连续执行多个网络参数的改变和小区拥塞的评估，直到达到目标服务质量。

公开(公告)号：US20090163214A1

公开(公告)日：2009-06-25

申请号：US12094299

申请日：2007-03-19

申请人： Hafedh Trigui ,  Stuart J. Dean ,  John Litva

发明人： Hafedh Trigui ,  Stuart J. Dean ,  John Litva

IPC分类号： H04W16/00

CPC分类号： H04W16/24

摘要： A method and apparatus for increasing capacity and performance of a base station for a sectorized cellular wireless network is disclosed in which one of the sector antennas is replaced or supplanted by a novel sub-sector antenna that generates a plurality of asymmetrical sub-sector coverage areas that collectively substantially cover the coverage area of the replaced sector antenna. The use of asymmetrical coverage areas permits the total coverage area to closely approximate the symmetrical sector coverage area without creating excessively large sub-sector handover zones or introducing severe degradation in the network performance. This in turn permits the selective replacement of a single sector antenna rather than the wholesale replacement of all sector antennas in a region, leading to lower transitional costs and the ability to provide a focused approach to capacity planning.

摘要翻译： 公开了一种用于增加用于扇区化的蜂窝无线网络的基站的容量和性能的方法和装置，其中扇区天线中的一个由新的子扇区天线替换或替换，该新的子扇区天线生成多个不对称的子扇区覆盖区域 它们共同地基本上覆盖被替换的扇形天线的覆盖区域。 使用不对称覆盖区域允许总覆盖区域紧密地近似于对称扇区覆盖区域，而不会产生过大的子扇区切换区域或引入网络性能的严重劣化。 这又允许选择性地更换单个扇区天线，而不是批量更换一个区域中的所有扇区天线，从而降低过渡成本，并提供集中的方法进行容量规划。

公开(公告)号：US07429949B1

公开(公告)日：2008-09-30

申请号：US11890136

申请日：2007-08-03

申请人： Hafedh Trigui

发明人： Hafedh Trigui

IPC分类号： H01Q3/00

CPC分类号： H01Q3/30

摘要： A method and system for generating beamforming weights for a plurality of antenna elements is disclosed. The invention consists of generating broadened nulls in a direction of arrival corresponding to one or more co-channel interference signals. The broadened nulls permit deviations in the measurement of the direction of arrival or variations therein. The increased information content inherent in generating the broadened nulls is accommodated by postulating the existence of a virtual augmented antenna array comprising the antenna elements of the physical array and a plurality of additional virtual elements. The beamforming weights for the elements of the augmented array are truncated down prior to translation to the size of the physical array and are applied to create the desired broadened nulls and thereby improve system performance.

摘要翻译： 公开了一种用于生成多个天线元件的波束形成权重的方法和系统。 本发明包括在与一个或多个同信道干扰信号相对应的到达方向上产生加宽的零点。 扩大的零点允许测量到达方向或其中的变化的偏差。 通过假设存在包括物理阵列的天线元件和多个附加虚拟元件的虚拟增强天线阵列，可以适应生成扩展空值所固有的增加的信息内容。 扩展阵列的元素的波束成形权重在转换为物理阵列的大小之前被截断，并被应用于创建所需的扩展空值，从而提高系统性能。