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    • 11. 发明授权
    • Asymmetrical beams for spectrum efficiency
    • 不对称光束的频谱效率
    • US08311582B2
    • 2012-11-13
    • US12094299
    • 2007-03-19
    • Hafedh TriguiStuart J. DeanJohn Litva
    • Hafedh TriguiStuart J. DeanJohn Litva
    • H04M1/00
    • H04W16/24
    • 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.
    • 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。
    • 12. 发明申请
    • CELLULAR LOCATION SYSTEM AND CELLULAR LOCATION METHOD
    • 细胞定位系统和细胞定位方法
    • US20110312335A1
    • 2011-12-22
    • US12818440
    • 2010-06-18
    • Jun LIUHafedh TriguiRichard Cuthill
    • Jun LIUHafedh TriguiRichard Cuthill
    • H04W24/00H04W36/00H04W4/00
    • G01S5/0215G01S5/06H04W24/10H04W64/00
    • A cellular location method is used in a cellular location system including a database. The cellular location method obtains radio measurements from a user terminal located in the communications network, extracts information from the obtained radio measurements, determines the location of the user terminal based on the extracted information, and stores the determined location of the user terminal and the extracted information as an entry in the database such that the determined location of the user terminal is retrieved based upon a matching score between the extracted information from the user terminal and extracted information from the specified user terminal. Additionally, when the determined location of the user terminal is retrieved based upon the matching score, the location of the specified user terminal is determined to be the determined location of the user terminal.
    • 在包括数据库的蜂窝位置系统中使用蜂窝定位方法。 蜂窝定位方法从位于通信网络中的用户终端获得无线电测量,从获得的无线电测量中提取信息,基于所提取的信息确定用户终端的位置,并存储确定的用户终端的位置和提取的 信息作为数据库中的条目,使得基于来自用户终端的提取的信息与从指定用户终端提取的信息之间的匹配分数来检索用户终端的确定位置。 此外,当基于匹配分数检索确定的用户终端的位置时,确定指定的用户终端的位置是确定的用户终端的位置。
    • 14. 发明申请
    • Method and apparatus for adaptive beamforming in an antenna array system for wireless communications
    • 用于无线通信的天线阵列系统中的自适应波束成形的方法和装置
    • US20070249404A1
    • 2007-10-25
    • US11784090
    • 2007-04-04
    • Shiwei GaoHafedh Trigui
    • Shiwei GaoHafedh Trigui
    • H04M1/00
    • H01Q3/2605H04B7/086
    • 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.
    • 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。
    • 15. 发明申请
    • Method and apparatus for Wi-Fi capacity enhancement
    • Wi-Fi容量增强的方法和装置
    • US20070249403A1
    • 2007-10-25
    • US11784089
    • 2007-04-04
    • Shiwei GaoHafedh Trigui
    • Shiwei GaoHafedh Trigui
    • H04M1/00
    • H04W16/28H04W84/12
    • 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.
    • 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。