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    • 132. 发明申请
    • SPATIAL MODE ADAPTATION AT THE CELL EDGE USING INTERFERER SPATIAL CORRELATION
    • 使用干涉空间相关的细胞边缘的空间模式适应
    • US20090291699A1
    • 2009-11-26
    • US12125604
    • 2008-05-22
    • Robert HeathTao Wu
    • Robert HeathTao Wu
    • H04B15/00
    • H04B7/022H04B7/0617H04B7/0669H04B7/0689H04B7/0697H04L1/0015
    • A system and method is proposed for adapting the spatial transmission strategy in a cellular MIMO (multiple input multiple output) communication system for the downlink. Spatial mode adaptation, the choice of multiplexing, transmit diversity, number of streams, space-time code family, and the like are performed slowly based on side information from other base stations. Base stations exchange their transmission plans with neighboring base stations and broadcast this information to active users. Each user measures its susceptibility to spatial interference and returns this information to the base station. The base station then schedules active users according to the decisions made in interfering base stations and the preferred transmission strategies of its own users.
    • 提出了一种适用于下行链路的蜂窝MIMO(多输入多输出)通信系统中的空间传输策略的系统和方法。 基于来自其他基站的侧信息,缓慢地执行空间模式适配,复用选择,发送分集,流数,时空码系列等。 基站与相邻基站交换传输方案,并将该信息广播到主动用户。 每个用户测量其对空间干扰的敏感性,并将该信息返回给基站。 然后,基站根据在干扰基站中做出的决定以及其自己的用户的优选传输策略来调度活动用户。
    • 133. 发明申请
    • Progressive Feedback For High Resolution Limited Feedback Wireless Communication
    • 高分辨率有限反馈无线通信的渐进反馈
    • US20090274230A1
    • 2009-11-05
    • US12434529
    • 2009-05-01
    • Robert Wendell Heath, JR.Tao Wu
    • Robert Wendell Heath, JR.Tao Wu
    • H04L27/28H04M1/00
    • H04B7/0634H04B7/0639H04B7/0663
    • A system and method is proposed for progressively quantizing channel state information for application in a MIMO (multiple input multiple output) communication system. A method includes computing an estimate of a communications channel between a subscriber unit and a base station, quantizing the estimate with a first codebook, thereby producing a first quantized estimate, quantizing an (n−1)-th quantized estimate with an n-th codebook, thereby producing an n-th quantized estimate, where n is an integer value ranging from 2 to R, R is a total number of quantizations of the estimate, wherein the n-th codebook is a localized codebook. The method also includes incrementing n, repeating the quantizing an (n−1)-th quantized estimate until n=R, and transmitting information based on the R quantized estimates to the base station.
    • 提出了一种用于逐行量化用于MIMO(多输入多输出)通信系统中的应用的信道状态信息的系统和方法。 一种方法包括计算用户单元和基站之间的通信信道的估计,用第一码本量化估计,由此产生第一量化估计,用第n个量化第(n-1)个量化估计 码本,从而产生第n量化估计,其中n是从2到R的整数值,R是估计的总量数,其中第n个码本是局部码本。 该方法还包括增加n,重复量化第(n-1)量化估计直到n = R,并且将基于R量化估计的信息发送到基站。
    • 134. 发明授权
    • Tomosynthesis imaging system and method
    • 系统合成成像系统及方法
    • US07356113B2
    • 2008-04-08
    • US10776690
    • 2004-02-11
    • Tao WuAlex StewartMartin StantonWalter PhillipsDaniel B. KopansRichard Moore
    • Tao WuAlex StewartMartin StantonWalter PhillipsDaniel B. KopansRichard Moore
    • A61B6/02
    • G06T11/006A61B6/025A61B6/502A61B6/583G01N23/04G06T2211/424G06T2211/436
    • A system for three-dimensional tomosynthesis imaging of a target element includes an image acquisition element and a processor. The image acquisition element obtains a plurality of images of the target element from a plurality of angles and includes a radiation source that is positionable at a plurality of angles with respect to the target element and a radiation detector. The radiation detector is positioned so as to detect radiation emitted by the radiation source passing through the target element and determine a plurality of attenuation values for radiation passing through the target element to establish a radiation absorbance projection image of the target element for a particular radiation source angle. The processor is configured to apply an iterative reconstruction algorithm to the radiation absorbance projection images of the target element obtained from a plurality of radiation source angles to generate a three-dimensional reconstruction of the target element.
    • 用于目标元件的三维断层合成成像的系统包括图像采集元件和处理器。 图像采集元件从多个角度获得目标元件的多个图像,并且包括可相对于目标元件以多个角度定位的辐射源和放射线检测器。 放射线检测器被定位成检测通过目标元件的辐射源发射的辐射,并确定用于通过目标元件的辐射的多个衰减值,以建立用于特定辐射源的目标元件的辐射吸收投影图像 角度。 处理器被配置为对从多个辐射源角度获得的目标元件的辐射吸收投影图像应用迭代重建算法,以产生目标元素的三维重建。
    • 135. 发明申请
    • METHOD FOR REALIZING DYNAMIC QOS IN WIMAX SYSTEM
    • 在WIMAX系统中实现动态QOS的方法
    • US20070180030A1
    • 2007-08-02
    • US11570750
    • 2006-05-11
    • Zizhen XuTao WuRuobin Zheng
    • Zizhen XuTao WuRuobin Zheng
    • G06F15/16
    • H04L41/0896H04W4/00H04W28/24H04W72/0433H04W72/0486H04W76/10H04W88/16
    • Method for realizing dynamic QoS in a WIMAX system includes: a Media Gateway Control MGC makes awareness of a service stream from a Media Gateway MG, and transmits a resource request to a Resource Management Server RMS, which, in response to the request, decides whether there is enough resource; and if yes, confirms the request, and transmits a resource allocation instruction and QoS parameters matching the resource type to a Base Station BS, which, after receiving the instruction, allocates resource to a Subscriber Station SS, thus a channel from the MGC to the MG via BS and SS is established; or if not, refuses the request. According to the method, BS or SS do not make awareness of services, and no bandwidth preservation is needed for UGS or Realtime-polling service streams, and QoS parameters are issued dynamically by a RMS. Thus network resource management is more flexible and convenient.
    • 在WIMAX系统中实现动态QoS的方法包括:媒体网关控制MGC使得对媒体网关MG的服务流的认知,并将资源请求发送到资源管理服务器RMS,资源管理服务器RMS响应于该请求,决定是否 有足够的资源; 如果是,则确认该请求,并将资源分配指示和资源类型匹配的QoS参数发送到基站BS,基站BS在接收到指令之后向用户站SS分配资源,从而从MGC到 通过BS和SS建立MG; 否则,拒绝请求。 根据该方法,BS或SS不提供服务意识,UGS或实时轮询服务流不需要带宽保留,QoS参数由RMS动态发布。 网络资源管理更加灵活方便。
    • 139. 发明申请
    • Per user rate control for the reverse link in CDMA networks
    • CDMA网络中的反向链路的每用户速率控制
    • US20050141461A1
    • 2005-06-30
    • US10731909
    • 2003-12-10
    • Patrick HoseinTao Wu
    • Patrick HoseinTao Wu
    • H04B7/005H04L1/00H04L12/56H04W8/20H04W28/22H04W52/26H04W52/36H04B7/216
    • H04W52/267H04L1/0002H04L1/0022H04L1/0025H04W8/20H04W28/22H04W52/367
    • A method and apparatus enables a base station to control the reverse link data rates of the mobile stations. Such control may be used to improve reverse link throughput, and such improvements may be balanced against fairness of service interests. Broadly, a radio base station (RBS) makes per-mobile station rate control decisions in each rate control interval based on each mobile station's desired rate and past reverse link throughput. These values may be used to compute a priority value for each mobile station, which values are then used to prioritize the mobile stations in rank order. Rate control decisions are made for the mobile stations in rank order based on their desired rates and remaining reverse link capacity. In one embodiment, the mobile stations provide path loss information to the RBS, and it computes each mobile station's desired rate as the mobile's achievable rate assuming it transmitted at maximum power.
    • 一种方法和装置使得基站能够控制移动台的反向链路数据速率。 可以使用这种控制来提高反向链路吞吐量,并且这些改进可以平衡服务兴趣的公平性。 广泛地讲,无线电基站(RBS)根据每个移动台的期望速率和过去的反向链路吞吐量,在每个速率控制间隔中进行每移动站速率控制决定。 这些值可以用于计算每个移动台的优先级值,然后这些值用于按照排序顺序对移动台进行优先级排序。 基于其期望的速率和剩余的反向链路容量,按照等级顺序对移动台进行速率控制决定。 在一个实施例中,移动站向RBS提供路径损耗信息,并且它以每个移动站的最大功率发送的可实现速率来计算每个移动台的期望速率。